From 32309e019f2ff7d9f69f3e0016f67439e81b8b30 Mon Sep 17 00:00:00 2001
From: Louis Burda <quent.burda@gmail.com>
Date: Sat, 30 Mar 2024 15:37:05 +0100
Subject: Rename to solve

---
 chall/Dockerfile                                   |   33 -
 chall/apache-config.conf                           |   15 -
 chall/flag                                         |    1 -
 chall/lolpython.py                                 |  768 --
 chall/notes                                        |   41 -
 chall/ply-2.2.tar.gz                               |  Bin 0 -> 142210 bytes
 chall/ply-2.2/ANNOUNCE                             |   48 -
 chall/ply-2.2/CHANGES                              |  680 --
 chall/ply-2.2/COPYING                              |  504 --
 chall/ply-2.2/README                               |  277 -
 chall/ply-2.2/TODO                                 |   14 -
 .../build/lib.linux-x86_64-2.7/ply/__init__.py     |    4 -
 .../ply-2.2/build/lib.linux-x86_64-2.7/ply/lex.py  |  866 --
 .../ply-2.2/build/lib.linux-x86_64-2.7/ply/yacc.py | 2209 -----
 chall/ply-2.2/doc/makedoc.py                       |  194 -
 chall/ply-2.2/doc/ply.html                         | 2874 -------
 chall/ply-2.2/example/BASIC/README                 |   79 -
 chall/ply-2.2/example/BASIC/basic.py               |   68 -
 chall/ply-2.2/example/BASIC/basiclex.py            |   74 -
 chall/ply-2.2/example/BASIC/basinterp.py           |  440 -
 chall/ply-2.2/example/BASIC/basparse.py            |  424 -
 chall/ply-2.2/example/BASIC/dim.bas                |   14 -
 chall/ply-2.2/example/BASIC/func.bas               |    5 -
 chall/ply-2.2/example/BASIC/gcd.bas                |   22 -
 chall/ply-2.2/example/BASIC/gosub.bas              |   13 -
 chall/ply-2.2/example/BASIC/hello.bas              |    4 -
 chall/ply-2.2/example/BASIC/linear.bas             |   17 -
 chall/ply-2.2/example/BASIC/maxsin.bas             |   12 -
 chall/ply-2.2/example/BASIC/powers.bas             |   13 -
 chall/ply-2.2/example/BASIC/rand.bas               |    4 -
 chall/ply-2.2/example/BASIC/sales.bas              |   20 -
 chall/ply-2.2/example/BASIC/sears.bas              |   18 -
 chall/ply-2.2/example/BASIC/sqrt1.bas              |    5 -
 chall/ply-2.2/example/BASIC/sqrt2.bas              |    4 -
 chall/ply-2.2/example/GardenSnake/GardenSnake.py   |  709 --
 chall/ply-2.2/example/GardenSnake/README           |    5 -
 chall/ply-2.2/example/README                       |   10 -
 chall/ply-2.2/example/ansic/README                 |    2 -
 chall/ply-2.2/example/ansic/clex.py                |  164 -
 chall/ply-2.2/example/ansic/cparse.py              |  863 --
 chall/ply-2.2/example/ansic/lextab.py              |    8 -
 chall/ply-2.2/example/calc/calc.py                 |  105 -
 chall/ply-2.2/example/classcalc/calc.py            |  152 -
 chall/ply-2.2/example/cleanup.sh                   |    2 -
 chall/ply-2.2/example/hedit/hedit.py               |   48 -
 chall/ply-2.2/example/newclasscalc/calc.py         |  155 -
 chall/ply-2.2/example/optcalc/README               |    9 -
 chall/ply-2.2/example/optcalc/calc.py              |  113 -
 chall/ply-2.2/example/unicalc/calc.py              |  114 -
 chall/ply-2.2/example/yply/README                  |   41 -
 chall/ply-2.2/example/yply/ylex.py                 |  112 -
 chall/ply-2.2/example/yply/yparse.py               |  217 -
 chall/ply-2.2/example/yply/yply.py                 |   53 -
 chall/ply-2.2/ply/__init__.py                      |    4 -
 chall/ply-2.2/ply/__init__.pyc                     |  Bin 144 -> 0 bytes
 chall/ply-2.2/ply/lex.py                           |  866 --
 chall/ply-2.2/ply/lex.pyc                          |  Bin 19470 -> 0 bytes
 chall/ply-2.2/ply/yacc.py                          | 2209 -----
 chall/ply-2.2/ply/yacc.pyc                         |  Bin 41996 -> 0 bytes
 chall/ply-2.2/setup.py                             |   27 -
 chall/ply-2.2/test/README                          |   11 -
 chall/ply-2.2/test/calclex.py                      |   49 -
 chall/ply-2.2/test/cleanup.sh                      |    4 -
 chall/ply-2.2/test/lex_doc1.exp                    |    1 -
 chall/ply-2.2/test/lex_doc1.py                     |   30 -
 chall/ply-2.2/test/lex_dup1.exp                    |    2 -
 chall/ply-2.2/test/lex_dup1.py                     |   29 -
 chall/ply-2.2/test/lex_dup2.exp                    |    2 -
 chall/ply-2.2/test/lex_dup2.py                     |   33 -
 chall/ply-2.2/test/lex_dup3.exp                    |    2 -
 chall/ply-2.2/test/lex_dup3.py                     |   31 -
 chall/ply-2.2/test/lex_empty.exp                   |    1 -
 chall/ply-2.2/test/lex_empty.py                    |   20 -
 chall/ply-2.2/test/lex_error1.exp                  |    1 -
 chall/ply-2.2/test/lex_error1.py                   |   24 -
 chall/ply-2.2/test/lex_error2.exp                  |    1 -
 chall/ply-2.2/test/lex_error2.py                   |   26 -
 chall/ply-2.2/test/lex_error3.exp                  |    2 -
 chall/ply-2.2/test/lex_error3.py                   |   27 -
 chall/ply-2.2/test/lex_error4.exp                  |    2 -
 chall/ply-2.2/test/lex_error4.py                   |   27 -
 chall/ply-2.2/test/lex_hedit.exp                   |    3 -
 chall/ply-2.2/test/lex_hedit.py                    |   47 -
 chall/ply-2.2/test/lex_ignore.exp                  |    7 -
 chall/ply-2.2/test/lex_ignore.py                   |   31 -
 chall/ply-2.2/test/lex_nowarn.exp                  |    0
 chall/ply-2.2/test/lex_nowarn.py                   |   30 -
 chall/ply-2.2/test/lex_re1.exp                     |    7 -
 chall/ply-2.2/test/lex_re1.py                      |   27 -
 chall/ply-2.2/test/lex_re2.exp                     |    7 -
 chall/ply-2.2/test/lex_re2.py                      |   27 -
 chall/ply-2.2/test/lex_re3.exp                     |    8 -
 chall/ply-2.2/test/lex_re3.py                      |   29 -
 chall/ply-2.2/test/lex_rule1.exp                   |    2 -
 chall/ply-2.2/test/lex_rule1.py                    |   27 -
 chall/ply-2.2/test/lex_state1.exp                  |    7 -
 chall/ply-2.2/test/lex_state1.py                   |   40 -
 chall/ply-2.2/test/lex_state2.exp                  |    8 -
 chall/ply-2.2/test/lex_state2.py                   |   40 -
 chall/ply-2.2/test/lex_state3.exp                  |    8 -
 chall/ply-2.2/test/lex_state3.py                   |   42 -
 chall/ply-2.2/test/lex_state4.exp                  |    7 -
 chall/ply-2.2/test/lex_state4.py                   |   41 -
 chall/ply-2.2/test/lex_state5.exp                  |    7 -
 chall/ply-2.2/test/lex_state5.py                   |   42 -
 chall/ply-2.2/test/lex_state_noerror.exp           |    1 -
 chall/ply-2.2/test/lex_state_noerror.py            |   41 -
 chall/ply-2.2/test/lex_state_norule.exp            |    7 -
 chall/ply-2.2/test/lex_state_norule.py             |   42 -
 chall/ply-2.2/test/lex_state_try.exp               |    7 -
 chall/ply-2.2/test/lex_state_try.py                |   48 -
 chall/ply-2.2/test/lex_token1.exp                  |    1 -
 chall/ply-2.2/test/lex_token1.py                   |   21 -
 chall/ply-2.2/test/lex_token2.exp                  |    1 -
 chall/ply-2.2/test/lex_token2.py                   |   23 -
 chall/ply-2.2/test/lex_token3.exp                  |    2 -
 chall/ply-2.2/test/lex_token3.py                   |   27 -
 chall/ply-2.2/test/lex_token4.exp                  |    2 -
 chall/ply-2.2/test/lex_token4.py                   |   28 -
 chall/ply-2.2/test/lex_token5.exp                  |    1 -
 chall/ply-2.2/test/lex_token5.py                   |   33 -
 chall/ply-2.2/test/rununit.py                      |   62 -
 chall/ply-2.2/test/testlex.py                      |   57 -
 chall/ply-2.2/test/testyacc.py                     |   58 -
 chall/ply-2.2/test/yacc_badargs.exp                |    3 -
 chall/ply-2.2/test/yacc_badargs.py                 |   68 -
 chall/ply-2.2/test/yacc_badprec.exp                |    1 -
 chall/ply-2.2/test/yacc_badprec.py                 |   65 -
 chall/ply-2.2/test/yacc_badprec2.exp               |    3 -
 chall/ply-2.2/test/yacc_badprec2.py                |   69 -
 chall/ply-2.2/test/yacc_badrule.exp                |    5 -
 chall/ply-2.2/test/yacc_badrule.py                 |   69 -
 chall/ply-2.2/test/yacc_badtok.exp                 |    1 -
 chall/ply-2.2/test/yacc_badtok.py                  |   70 -
 chall/ply-2.2/test/yacc_dup.exp                    |    4 -
 chall/ply-2.2/test/yacc_dup.py                     |   69 -
 chall/ply-2.2/test/yacc_error1.exp                 |    1 -
 chall/ply-2.2/test/yacc_error1.py                  |   69 -
 chall/ply-2.2/test/yacc_error2.exp                 |    1 -
 chall/ply-2.2/test/yacc_error2.py                  |   69 -
 chall/ply-2.2/test/yacc_error3.exp                 |    1 -
 chall/ply-2.2/test/yacc_error3.py                  |   68 -
 chall/ply-2.2/test/yacc_inf.exp                    |    5 -
 chall/ply-2.2/test/yacc_inf.py                     |   57 -
 chall/ply-2.2/test/yacc_missing1.exp               |    2 -
 chall/ply-2.2/test/yacc_missing1.py                |   69 -
 chall/ply-2.2/test/yacc_nodoc.exp                  |    2 -
 chall/ply-2.2/test/yacc_nodoc.py                   |   68 -
 chall/ply-2.2/test/yacc_noerror.exp                |    2 -
 chall/ply-2.2/test/yacc_noerror.py                 |   67 -
 chall/ply-2.2/test/yacc_nop.exp                    |    2 -
 chall/ply-2.2/test/yacc_nop.py                     |   69 -
 chall/ply-2.2/test/yacc_notfunc.exp                |    4 -
 chall/ply-2.2/test/yacc_notfunc.py                 |   67 -
 chall/ply-2.2/test/yacc_notok.exp                  |    1 -
 chall/ply-2.2/test/yacc_notok.py                   |   68 -
 chall/ply-2.2/test/yacc_rr.exp                     |    2 -
 chall/ply-2.2/test/yacc_rr.py                      |   73 -
 chall/ply-2.2/test/yacc_simple.exp                 |    1 -
 chall/ply-2.2/test/yacc_simple.py                  |   69 -
 chall/ply-2.2/test/yacc_sr.exp                     |    2 -
 chall/ply-2.2/test/yacc_sr.py                      |   64 -
 chall/ply-2.2/test/yacc_term1.exp                  |    2 -
 chall/ply-2.2/test/yacc_term1.py                   |   69 -
 chall/ply-2.2/test/yacc_unused.exp                 |    4 -
 chall/ply-2.2/test/yacc_unused.py                  |   78 -
 chall/ply-2.2/test/yacc_uprec.exp                  |    2 -
 chall/ply-2.2/test/yacc_uprec.py                   |   64 -
 chall/src/css/bootstrap-grid.css                   | 2050 -----
 chall/src/css/bootstrap-grid.min.css               |    7 -
 chall/src/css/bootstrap-reboot.css                 |  330 -
 chall/src/css/bootstrap-reboot.min.css             |    8 -
 chall/src/css/bootstrap.css                        | 8975 --------------------
 chall/src/css/bootstrap.min.css                    |    7 -
 chall/src/css/custom.css                           |   66 -
 chall/src/form.php                                 |   24 -
 chall/src/index.php                                |   58 -
 chall/src/js/bootstrap.bundle.js                   | 6328 --------------
 chall/src/js/bootstrap.bundle.min.js               |    7 -
 chall/src/js/bootstrap.js                          | 3894 ---------
 chall/src/js/bootstrap.min.js                      |    7 -
 chall/src/js/rockstar.js                           |   13 -
 chall/src/transpile.php                            |   18 -
 183 files changed, 40374 deletions(-)
 delete mode 100644 chall/Dockerfile
 delete mode 100644 chall/apache-config.conf
 delete mode 100644 chall/flag
 delete mode 100644 chall/lolpython.py
 delete mode 100644 chall/notes
 create mode 100644 chall/ply-2.2.tar.gz
 delete mode 100644 chall/ply-2.2/ANNOUNCE
 delete mode 100644 chall/ply-2.2/CHANGES
 delete mode 100644 chall/ply-2.2/COPYING
 delete mode 100644 chall/ply-2.2/README
 delete mode 100644 chall/ply-2.2/TODO
 delete mode 100644 chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/__init__.py
 delete mode 100644 chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/lex.py
 delete mode 100644 chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/yacc.py
 delete mode 100644 chall/ply-2.2/doc/makedoc.py
 delete mode 100644 chall/ply-2.2/doc/ply.html
 delete mode 100644 chall/ply-2.2/example/BASIC/README
 delete mode 100644 chall/ply-2.2/example/BASIC/basic.py
 delete mode 100644 chall/ply-2.2/example/BASIC/basiclex.py
 delete mode 100644 chall/ply-2.2/example/BASIC/basinterp.py
 delete mode 100644 chall/ply-2.2/example/BASIC/basparse.py
 delete mode 100644 chall/ply-2.2/example/BASIC/dim.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/func.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/gcd.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/gosub.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/hello.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/linear.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/maxsin.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/powers.bas
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 delete mode 100644 chall/ply-2.2/example/BASIC/sales.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/sears.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/sqrt1.bas
 delete mode 100644 chall/ply-2.2/example/BASIC/sqrt2.bas
 delete mode 100644 chall/ply-2.2/example/GardenSnake/GardenSnake.py
 delete mode 100644 chall/ply-2.2/example/GardenSnake/README
 delete mode 100644 chall/ply-2.2/example/README
 delete mode 100644 chall/ply-2.2/example/ansic/README
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 delete mode 100644 chall/ply-2.2/example/ansic/cparse.py
 delete mode 100644 chall/ply-2.2/example/ansic/lextab.py
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 delete mode 100755 chall/ply-2.2/example/classcalc/calc.py
 delete mode 100755 chall/ply-2.2/example/cleanup.sh
 delete mode 100644 chall/ply-2.2/example/hedit/hedit.py
 delete mode 100755 chall/ply-2.2/example/newclasscalc/calc.py
 delete mode 100644 chall/ply-2.2/example/optcalc/README
 delete mode 100644 chall/ply-2.2/example/optcalc/calc.py
 delete mode 100644 chall/ply-2.2/example/unicalc/calc.py
 delete mode 100644 chall/ply-2.2/example/yply/README
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 delete mode 100644 chall/ply-2.2/setup.py
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 delete mode 100644 chall/src/css/bootstrap.css
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 delete mode 100644 chall/src/css/custom.css
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 delete mode 100644 chall/src/js/bootstrap.js
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 delete mode 100644 chall/src/js/rockstar.js
 delete mode 100644 chall/src/transpile.php

(limited to 'chall')

diff --git a/chall/Dockerfile b/chall/Dockerfile
deleted file mode 100644
index 4ca733e..0000000
--- a/chall/Dockerfile
+++ /dev/null
@@ -1,33 +0,0 @@
-FROM php:7.3-apache
-
-ADD --chmod=0755 \
-    https://raw.githubusercontent.com/reproducible-containers/repro-sources-list.sh/v0.1.0/repro-sources-list.sh \
-    /usr/local/bin/repro-sources-list.sh
-
-#RUN bash /usr/local/bin/repro-sources-list.sh && apt-get update && apt-get -y install python2 curl tar
-RUN apt-get update && apt-get -y install python2 curl tar
-
-# Expose apache.
-EXPOSE 1024
-
-ADD src/ /var/www/site/
-
-RUN chmod -R 755 /var/www/
-RUN chown -R www-data:www-data /var/www
-
-COPY flag /flag
-RUN chmod 777 /flag
-
-RUN mkdir -p /var/www/site/uploads
-RUN chmod -R 777 /var/www/site/uploads
-
-# Update the default apache site with the config we created.
-ADD apache-config.conf /etc/apache2/sites-enabled/000-default.conf
-
-RUN sed -i 's/Listen 80/Listen 1024/' /etc/apache2/ports.conf
-
-
-# Install ply and lolcode1337
-WORKDIR /opt/
-RUN curl https://www.dabeaz.com/ply/ply-2.2.tar.gz -k -o ply-2.2.tar.gz && curl http://dalkescientific.com/writings/diary/lolpython.py -k -o lolcode.py && \
-    tar -xvf ply-2.2.tar.gz && cd ply-2.2 && python2 setup.py install
\ No newline at end of file
diff --git a/chall/apache-config.conf b/chall/apache-config.conf
deleted file mode 100644
index 42b6468..0000000
--- a/chall/apache-config.conf
+++ /dev/null
@@ -1,15 +0,0 @@
-<VirtualHost *:1024>
-  ServerAdmin me@mydomain.com
-  DocumentRoot /var/www/site
-
-  <Directory /var/www/site/>
-      Options -Indexes +FollowSymLinks +MultiViews
-      AllowOverride All
-      Order deny,allow
-      Allow from all
-  </Directory>
-
-  ErrorLog ${APACHE_LOG_DIR}/error.log
-  CustomLog ${APACHE_LOG_DIR}/access.log combined
-
-</VirtualHost>
diff --git a/chall/flag b/chall/flag
deleted file mode 100644
index 446584c..0000000
--- a/chall/flag
+++ /dev/null
@@ -1 +0,0 @@
-CSCG{GZ!H4rd3st_p4rt_of_this_chall3nge_was_python2_and_ply_bug_f1xing:D}
diff --git a/chall/lolpython.py b/chall/lolpython.py
deleted file mode 100644
index 6337124..0000000
--- a/chall/lolpython.py
+++ /dev/null
@@ -1,768 +0,0 @@
-#!/usr/bin/env python
-# Implementation of the LOLPython language.
-# Converts from LOLPython to Python then optionally runs the Python.
-
-# This package depends on PLY -- http://www.dabeaz.com/ply/
-
-# Written by Andrew Dalke <dalke@dalkescientific.com>
-# Dalke Scientific Software, LLC
-# 1 June 2007, Gothenburg, Sweden
-# 
-# This software is in the public domain.  For details see:
-#   http://creativecommons.org/licenses/publicdomain/
-
-
-import sys
-import keyword
-import os
-import types
-from cStringIO import StringIO
-from ply import *
-
-
-__NAME__ = "lolpython"
-__VERSION__ = "1.0"
-
-# Translating LOLPython tokens to Python tokens
-# This could be cleaned up.  For example, some of
-# these tokens could be merged into one.
-tokens = (
-    "NAME",      # variable names
-    "RESERVED",  # Used for Python reserved names
-    "NUMBER",    # Integers and floats
-    "STRING",
-    "OP",        # Like the Python OP
-    "CLOSE",     # Don't really need this..
-
-    "COMMENT",
-    "AUTOCALL",  # write t.value then add '('
-    "INLINE",    # write t.value directly
-    "FUTURE",    # for the "I FUTURE CAT WITH" statement
-    "PRINT",     # VISIBLE -> stdout or COMPLAIN -> stderr
-
-    "ENDMARKER",
-    "COLON",
-    "WS",
-    "NEWLINE",
-)
-
-# Helper functions for making given token types
-def OP(t, value):
-    t.type = "OP"
-    t.value = value
-    return t
-
-def RESERVED(t, value):
-    t.type = "RESERVED"
-    t.value = value
-    return t
-
-def AUTOCALL(t, value):
-    t.type = "AUTOCALL"
-    t.value = "tuple"
-    t.lexer.paren_stack.append(")")
-    return t
-
-def INLINE(t, value):
-    t.type = "INLINE"
-    t.value = value
-    return t
-
-#####
-
-# ply uses a large regex for token detection, and sre is limited to
-# 100 groups.  This grammar pushes the limit.  I use (?:non-grouping)
-# parens to keep the count down.
-
-
-def t_ASSIGN(t):  # cannot be a simple pattern because it must
-    r'CAN[ ]+HA[SZ]\b'  # come before the t_NAME definition
-    return OP(t, "=")
-
-def t_SINGLE_QUOTE_STRING(t):
-    r"'([^\\']+|\\'|\\\\)*'"  # I think this is right ...
-    t.type = "STRING"
-    t.value = t.value[1:-1].decode("string-escape")
-    return t
-
-def t_DOUBLE_QUOTE_STRING(t):
-    r'"([^\\"]+|\\"|\\\\)*"'
-    t.type = "STRING"
-    t.value = t.value[1:-1].decode("string-escape")
-    print(t.value)
-    return t
-
-# and LOL quoted strings!  They end with /LOL
-# No way to have "/LOL" in the string.
-def t_LOL_STRING(t):
-    r"LOL[ ]*((?!/LOL).|\n)*[ ]*/LOL"
-    t.type = "STRING"
-    t.value = t.value[3:-4].strip(" ")
-    return t
-
-# Aliases for the same thing - for extra cuteness
-def t_LSQUARE(t):
-    r"(?:SOME|LOOK[ ]AT|LET[ ]+THE)\b"
-    t.lexer.paren_stack.append(']')
-    return OP(t, "[")
-
-def t_LPAREN(t):
-    r"(?:WIT|THEZ)\b"
-    t.lexer.paren_stack.append(')')
-    return OP(t, "(")
-
-def t_LBRACE(t):
-    r"BUCKET\b"
-    t.lexer.paren_stack.append("}")
-    return OP(t, "{")
-
-def t_CLOSE(t):
-    r"(?:OK(!+|\b)|!+)"
-    stack = t.lexer.paren_stack
-    if t.value.startswith("OK"):
-        num_closes = len(t.value)-1  # OK -> 1, OK! -> 2, OK!!->3
-    else:
-        num_closes = len(t.value)  # ! -> 1, !! -> 2
-    # Which close is this?  I use "OK" to match (, [ and {
-    if len(stack) < num_closes:
-        raise AssertionError("not enough opens on the stack: line %d"
-                             % (t.lineno,))
-    t.value = "".join(stack[-num_closes:][::-1])
-    del stack[-num_closes:]
-    return t
-
-def t_EQ(t):
-    r"KINDA[ ]+LIKE\b"
-    return OP(t, "==")
-
-def t_NE(t):
-    r"(?:KINDA[ ]+)?NOT[ ]+LIKE\b"
-    return OP(t, "!=")
-
-def t_is(t):
-    r"KINDA[ ]+IS\b"
-    return RESERVED(t, "is")
-
-def t_GT(t):
-    r"ATE[ ]+MORE[ ]+CHEEZBURGERS?[ ]+THAN\b"
-    return OP(t, ">")
-
-def t_LT(t):
-    r"ATE[ ]+FEWER[ ]+CHEEZBURGERS?[ ]+THAN\b"
-    return OP(t, "<")
-
-def t_GTE(t):
-    r"BIG[ ]+LIKE\b"
-    return OP(t, ">=")
-
-def t_LTE(t):
-    r"SMALL[ ]+LIKE\b"
-    return OP(t, "<=")
-
-def t_RETURN(t):
-    r"U[ ]+TAKE\b"
-    return RESERVED(t, "return")
-
-def t_yield(t):
-    r"U[ ]+BORROW\b"
-    return RESERVED(t, "yield")
-
-def t_ELIF(t):
-    r"OR[ ]+IZ\b"
-    return RESERVED(t, "elif")
-
-def t_ELSE(t):
-    r"(?:(?:I[ ]+GIVE[ ]+UP|IZ[ ]+KEWL|ALL[ ]+DONE)|NOPE)\b"
-    return RESERVED(t, "else")
-
-def t_COLON(t):
-    r"\?"
-    t.value = ":"
-    return t
-
-def t_FROM(t):
-    r"IN[ ]+MAI\b"
-    return RESERVED(t, "from")
-
-def t_EXCEPT(t):
-    r"O[ ]+NOES\b"
-    return RESERVED(t, "except")
-
-def t_PLUS(t):
-    r"ALONG[ ]+WITH\b"
-    return OP(t, "+")
-def t_MINUS(t):
-    r"TAKE[ ]+AWAY\b"
-    return OP(t, "-")
-
-def t_PLUS_EQUAL(t):
-    r"GETZ[ ]+ANOTHR\b"
-    return OP(t, "+=")
-
-def t_MINUS_EQUAL(t):
-    r"THROW[SZ]?[ ]+AWAY\b"
-    return OP(t, "-=")
-
-def t_DIV(t):
-    r"SMASHES[ ]+INTO\b"
-    return OP(t, "/")
-def t_DIV_EQUAL(t):
-    r"SMASHES[ ]+INTO[ ]+HAS\b"
-    return OP(t, "/=")
-def t_TRUEDIV(t):
-    r"SMASHES[ ]+NICELY[ ]+INTO\b"
-    return OP(t, "//")
-def t_MUL(t):
-    r"OF[ ]THOSE\b"
-    return OP(t, "*")
-def t_MUL_EQUAL(t):
-    r"COPIES[ ]+(?:HIM|HER|IT)SELF[ ]+BY\b"
-    return OP(t, "*=")
-def t_POW(t):
-    r"BY[ ]+GRAYSKULL[ ]+POWER"
-    return OP(t, "**")
-def t_IN(t):
-    r"IN[ ]+(?:UR|THE|THIS)\b"
-    return OP(t, "in")
-def t_del(t):
-    r"DO[ ]+NOT[ ]+WANT\b"
-    return RESERVED(t, "del")
-def t_and(t):
-    r"\&"
-    return RESERVED(t, "and")
-def t_or(t):
-    r"OR[ ]+MABEE\b"
-    return RESERVED(t, "or")
-
-def t_pass(t):
-    r"I[ ]+IZ[ ]+CUTE\b"
-    return RESERVED(t, "pass")
-
-def t_forever(t):
-    r"WHILE[ ]+I[ ]+CUTE\b"
-    return INLINE(t, "while 1")
-
-def t_def(t):
-    r"SO[ ]+IM[ ]+LIKE\b"
-    return RESERVED(t, "def")
-
-def t_class(t):
-    r"ME[ ]+MAKE[ ]\b"
-    return RESERVED(t, "class")
-
-def t_future(t):
-    r"I[ ]+FUTURE[ ]+CAT[ ]+WITH\b"
-    t.type = "FUTURE"
-    return t
-
-def t_assert(t):
-    r"SO[ ]+GOOD\b"
-    return RESERVED(t, "assert")
-
-def t_assert_not(t):
-    r"AINT[ ]+GOOD\b"
-    return INLINE(t, "assert not ")
-
-def t_for(t):
-    r"GIMME[ ]+EACH\b"
-    return RESERVED(t, "for")
-
-def t_list(t):
-    r"ALL[ ]+OF\b"
-    return AUTOCALL(t, "tuple")
-
-RESERVED_VALUES = {
-    "EASTERBUNNY": ("NUMBER", "0"),
-    "CHEEZBURGER": ("NUMBER", "1"),
-    "CHOKOLET": ("NUMBER", "-1"),
-    "TWIN": ("NUMBER", "2"),
-    "TWINZ": ("NUMBER", "2"),
-    "TWINS": ("NUMBER", "2"),
-    "EVILTWIN": ("NUMBER", "-2"),
-    "EVILTWINZ": ("NUMBER", "-2"),
-    "EVILTWINS": ("NUMBER", "-2"),
-    "ALLFINGERZ": ("NUMBER", "10"),
-    "TOEZ": ("NUMBER", "-10"),
-    "ONE": ("NUMBER", "1"),
-    "ONCE": ("NUMBER", "1"),
-    "TWO": ("NUMBER", "2"),
-    "TWICE": ("NUMBER", "2"),
-    "THR33": ("NUMBER", "3"),
-    "FOUR": ("NUMBER", "4"),
-    "FIV": ("NUMBER", "5"),
-    "SIKS": ("NUMBER", "6"),
-    "SEVN": ("NUMBER", "7"),
-    "ATE": ("NUMBER", "8"),
-    "NINE": ("NUMBER", "9"),
-    "MEH": ("NAME", "False"),
-    "YEAH": ("NAME", "True"),
-    "VISIBLE": ("PRINT", "stdout"),
-    "COMPLAIN": ("PRINT", "stderr"),
-    "AND": ("OP", ","),
-    "BLACKHOLE": ("RESERVED", "ZeroDivisionError"),
-    "DONOTLIKE": ("AUTOCALL", "AssertionError"),
-
-    "ANTI": ("OP", "-"),
-    "IZ": ("RESERVED", "if"),
-    "GIMME": ("RESERVED", "import"),
-    "LIKE": ("RESERVED", "as"),
-    "OWN": ("OP", "."),
-
-    "PLZ": ("RESERVED", "try"),
-    "HALP": ("RESERVED", "raise"),
-    "WHATEVER": ("RESERVED", "finally"),
-    "KTHX": ("RESERVED", "continue"),
-    "KTHXBYE": ("RESERVED", "break"),
-    
-    "OVER": ("OP", "/"),
-
-    "AINT": ("RESERVED", "not"),
-    "ME": ("RESERVED", "self"),
-
-    "STRING": ("AUTOCALL", "str"),
-    "NUMBR": ("AUTOCALL", "int"),
-    "BIGNESS": ("AUTOCALL", "len"),
-    "NUMBRZ": ("AUTOCALL", "range"),
-    "ADDED": ("AUTOCALL", ".append"),
-
-    "ARGZ": ("INLINE", "_lol_sys.argv"),
-    "THINGZ": ("INLINE", "()"),  # invisible tuple didn't sound right
-    "THING": ("INLINE", "()"),   # sometimes it's better in singular form
-    "MY": ("INLINE", "self."),
-    "MYSELF": ("INLINE", "(self)"),
-
-    "EVEN": ("INLINE", "% 2 == 0"),
-    "ODD": ("INLINE", "% 2 == 1"),
-    "WIF": ("RESERVED", "with"),
-    }
-
-def t_FLOAT(t):
-    r"""(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][-+]? \d+)?"""
-    t.value = t.value
-    t.type = "NUMBER"
-    return t
-
-def t_INT(t):
-    r"\d+"
-    t.type = "NUMBER"
-    return t
-
-def t_INVISIBLE(t):
-    r"INVISIBLE([ ]+(LIST|STRING|BUCKET))?\b"
-    if "LIST" in t.value:
-        t.type = "INLINE"
-        t.value = "[]"
-    elif "STRING" in t.value:
-        t.type = "INLINE"
-        t.value = '""'
-    elif "BUCKET" in t.value:
-        t.type = "INLINE"
-        t.value = "{}"
-    else:
-        RESERVED(t, "None")
-    return t
-
-# Not consuming the newline.  Needed for "IZ EASTERBUNNY? BTW comment"
-def t_COMMENT(t):
-    r"[ ]*(?:BTW|WTF)[^\n]*"
-    return t
-
-def t_NAME(t):
-    r'[a-zA-Z_][a-zA-Z0-9_]*'
-    if t.value in RESERVED_VALUES:
-        type, value = RESERVED_VALUES[t.value]
-        t.type = type
-        t.value = value
-        if t.type == "AUTOCALL":
-            t.lexer.paren_stack.append(")")
-    return t
-
-def t_WS(t):
-    r' [ ]+ '
-    if t.lexer.at_line_start and not t.lexer.paren_stack:
-        return t
-    
-
-# Don't generate newline tokens when inside of parens
-def t_newline(t):
-    r'\n+'
-    t.lexer.lineno += len(t.value)
-    t.type = "NEWLINE"
-    if not t.lexer.paren_stack:
-        return t
-    
-
-def t_error(t):
-    raise SyntaxError("Unknown symbol %r" % (t.value[0],))
-    print "Skipping", repr(t.value[0])
-    t.lexer.skip(1)
-
-
-## I implemented INDENT / DEDENT generation as a post-processing filter
-
-# The original lex token stream contains WS and NEWLINE characters.
-# WS will only occur before any other tokens on a line.
-
-# I have three filters.  One tags tokens by adding two attributes.
-# "must_indent" is True if the token must be indented from the
-# previous code.  The other is "at_line_start" which is True for WS
-# and the first non-WS/non-NEWLINE on a line.  It flags the check so
-# see if the new line has changed indication level.
-
-# Python's syntax has three INDENT states
-#  0) no colon hence no need to indent
-#  1) "if 1: go()" - simple statements have a COLON but no need for an indent
-#  2) "if 1:\n  go()" - complex statements have a COLON NEWLINE and must indent
-NO_INDENT = 0
-MAY_INDENT = 1
-MUST_INDENT = 2
-
-# only care about whitespace at the start of a line
-def track_tokens_filter(lexer, tokens):
-    lexer.at_line_start = at_line_start = True
-    indent = NO_INDENT
-    for token in tokens:
-        token.at_line_start = at_line_start
-
-        if token.type == "COLON":
-            at_line_start = False
-            indent = MAY_INDENT
-            token.must_indent = False
-            
-        elif token.type == "NEWLINE":
-            at_line_start = True
-            if indent == MAY_INDENT:
-                indent = MUST_INDENT
-            token.must_indent = False
-
-        elif token.type == "WS":
-            assert token.at_line_start == True
-            at_line_start = True
-            token.must_indent = False
-
-        elif token.type == "COMMENT":
-            pass
-
-        else:
-            # A real token; only indent after COLON NEWLINE
-            if indent == MUST_INDENT:
-                token.must_indent = True
-            else:
-                token.must_indent = False
-            at_line_start = False
-
-            indent = NO_INDENT
-
-        yield token
-        lexer.at_line_start = at_line_start
-
-def _new_token(type, lineno):
-    tok = lex.LexToken()
-    tok.type = type
-    tok.value = None
-    tok.lineno = lineno
-    tok.lexpos = -1
-    return tok
-
-# Synthesize a DEDENT tag
-def DEDENT(lineno):
-    return _new_token("DEDENT", lineno)
-
-# Synthesize an INDENT tag
-def INDENT(lineno):
-    return _new_token("INDENT", lineno)
-
-
-# Track the indentation level and emit the right INDENT / DEDENT events.
-def indentation_filter(tokens):
-    # A stack of indentation levels; will never pop item 0
-    levels = [0]
-    token = None
-    depth = 0
-    prev_was_ws = False
-    for token in tokens:
-##        if 1:
-##            print "Process", token,
-##            if token.at_line_start:
-##                print "at_line_start",
-##            if token.must_indent:
-##                print "must_indent",
-##            print
-                
-        # WS only occurs at the start of the line
-        # There may be WS followed by NEWLINE so
-        # only track the depth here.  Don't indent/dedent
-        # until there's something real.
-        if token.type == "WS":
-            assert depth == 0
-            depth = len(token.value)
-            prev_was_ws = True
-            # Don't forward WS to the parser
-            continue
-
-        if token.type == "NEWLINE":
-            depth = 0
-            if prev_was_ws or token.at_line_start:
-                # ignore blank lines
-                continue
-            # pass the other cases on through
-            yield token
-            continue
-
-        if token.type == "COMMENT":
-            yield token
-            continue
-
-        # then it must be a real token (not WS, not NEWLINE)
-        # which can affect the indentation level
-
-        prev_was_ws = False
-        if token.must_indent:
-            # The current depth must be larger than the previous level
-            if not (depth > levels[-1]):
-                raise IndentationError("expected an indented block")
-
-            levels.append(depth)
-            yield INDENT(token.lineno)
-
-        elif token.at_line_start:
-            # Must be on the same level or one of the previous levels
-            if depth == levels[-1]:
-                # At the same level
-                pass
-            elif depth > levels[-1]:
-                raise IndentationError("indentation increase but not in new block")
-            else:
-                # Back up; but only if it matches a previous level
-                try:
-                    i = levels.index(depth)
-                except ValueError:
-                    raise IndentationError("inconsistent indentation")
-                for _ in range(i+1, len(levels)):
-                    yield DEDENT(token.lineno)
-                    levels.pop()
-
-        yield token
-
-    ### Finished processing ###
-
-    # Must dedent any remaining levels
-    if len(levels) > 1:
-        assert token is not None
-        for _ in range(1, len(levels)):
-            yield DEDENT(token.lineno)
-    
-
-# The top-level filter adds an ENDMARKER, if requested.
-# Python's grammar uses it.
-def token_filter(lexer, add_endmarker = True):
-    token = None
-    tokens = iter(lexer.token, None)
-    tokens = track_tokens_filter(lexer, tokens)
-    for token in indentation_filter(tokens):
-        yield token
-
-    if add_endmarker:
-        lineno = 1
-        if token is not None:
-            lineno = token.lineno
-        yield _new_token("ENDMARKER", lineno)
-
-class LOLLexer(object):
-    def __init__(self, debug=0, optimize=0, lextab='lextab', reflags=0):
-        self.lexer = lex.lex(debug=debug, optimize=optimize,
-                             lextab=lextab, reflags=reflags)
-        self.token_stream = None
-    def input(self, s, add_endmarker=True):
-        self.lexer.paren_stack = []
-        self.lexer.input(s)
-        self.token_stream = token_filter(self.lexer, add_endmarker)
-    def token(self):
-        try:
-            return self.token_stream.next()
-        except StopIteration:
-            return None
-
-# Helper class to generate logically correct indented Python code
-class IndentWriter(object):
-    def __init__(self, outfile):
-        self.outfile = outfile
-        self.at_first_column = True
-        self.indent = 0
-    def write(self, text):
-        if self.at_first_column:
-            self.outfile.write("    "*self.indent)
-            self.at_first_column = False
-        self.outfile.write(text)
-
-# Split things up because the from __future__ statements must
-# go before any other code.
-HEADER = """# LOLPython to Python converter version 1.0
-# Written by Andrew Dalke, who should have been working on better things.
-
-"""
-
-BODY = """
-# sys is used for COMPLAIN and ARGZ
-import sys as _lol_sys
-
-"""
-
-def to_python(s):
-    L = LOLLexer()
-    L.input(s)
-    
-    header = StringIO()
-    header.write(HEADER)
-    header_output = IndentWriter(header)
-
-    body = StringIO()
-    body.write(BODY)
-    body_output = IndentWriter(body)
-
-    write = body_output.write
-    output = body_output
-
-    for t in iter(L.token_stream):
-        if t.type == "NAME":
-            # Need to escape names which are Python variables Do that
-            # by appending an "_".  But then I also need to make sure
-            # that "yield_" does not collide with "yield".  And you
-            # thought you were being clever trying to use a Python
-            # variable.  :)
-            name = t.value.rstrip("_")
-            if name in keyword.kwlist:
-                write(t.value + "_ ")
-            else:
-                write(t.value + " ")
-            
-        elif t.type in ("RESERVED", "OP", "NUMBER", "CLOSE"):
-            # While not pretty, I'll put a space after each
-            # term because it's the simplest solution.  Otherwise
-            # I'll need to track the amount of whitespace between
-            # the tokens in the original text.
-            write(t.value+" ")
-
-            # XXX escape names which are special in Python!
-        elif t.type == "STRING":
-            write(repr(t.value) + " ")
-        
-        elif t.type == "COMMENT":
-            # Not enough information to keep comments on the correct
-            # indentation level.  This is good enough.  Ugly though.
-            # Maybe I need to fix the tokenizer.
-            write("#"+ t.value[3:]+"\n")
-            output.at_first_column = True
-
-        elif t.type == "COLON":
-            write(":")
-
-        elif t.type == "INDENT":
-            output.indent += 1
-            pass
-        elif t.type == "DEDENT":
-            output.indent -= 1
-            pass
-        elif t.type == "NEWLINE":
-            write(t.value)
-            output.at_first_column = True
-            output = body_output
-            write = output.write
-        elif t.type == "PRINT":
-            if t.value == "stdout":
-                write("print ")
-            elif t.value == "stderr":
-                write("print >>_lol_sys.stderr, ")
-            else:
-                raise AssertionError(t.value)
-        elif t.type == "AUTOCALL":
-            write(t.value + "(")
-        elif t.type == "INLINE":
-            write(t.value)
-        elif t.type == "ENDMARKER":
-            write("\n# The end.\n")
-        elif t.type == "WS":
-            output.leading_ws = t.value
-        elif t.type == "FUTURE":
-            # Write to the header.  This is a hack.  Err, a hairball.
-            output = header_output
-            write = output.write
-            write("from __future__ import ")
-            
-        else:
-            raise AssertionError(t.type)
-        
-    return header.getvalue() + body.getvalue()
-
-
-# API code for doing the translation and exec'ing the result
-
-def execfile(infile, module_name="__lolmain__"):
-    "file, module_name -- exec the lolpython file in a newly created module"
-    if not hasattr(infile, "read"):
-        s = open(infile).read()
-    else:
-        s = infile.read()
-    return execstring(s, module_name)
-
-def execstring(s, module_name="__lolmain__"):
-    "s, module_name -- exec the lolpython string in a newly created module"
-    python_s = to_python(s)
-    # Doing this bit of trickiness so I can have LOLPython code act
-    # like __main__.  This fix is enough to fool unittest.
-    m = types.ModuleType(module_name)
-    sys.modules[module_name] = m
-    exec python_s in m.__dict__
-    return m
-
-def convert_file(infile, outfile):
-    "read LOLPython code from infile, write converted Python code to outfile"
-    if not hasattr(outfile, "write"):
-        outfile = open(outfile, "w")
-    outfile.write(to_python(infile.read()))
-
-def convert(filenames):
-    "convert LOLPython filenames into corresponding Python '.py' files"
-    if not filenames:
-        convert_file(sys.stdin, sys.stdout)
-    else:
-        for filename in filenames:
-            base, ext = os.path.splitext(filename)
-            convert_file(open(filename), open(base+".py", "w"))
-
-def help():
-    print """convert and run a lolpython program
-Commands are:
-    lolpython              Read a lolpython program from stdin and execute it
-    lolpython --convert    Convert a lolpython program from stdin 
-                                  and generate python to stdout
-    lolpython --convert filename1 [filename....] 
-                           Convert a list of lolpython files into Python files
-    lolpython filename [arg1 [arg2 ...]]
-                           Run a lolpython program using optional arguments
-"""
-
-def main(argv):
-    if len(argv) >= 2:
-        if argv[1] == "--convert":
-            convert(argv[2:])
-            return
-        if argv[1] == "--help":
-            help()
-            return
-        if argv[1] == "--version":
-            print __NAME__ + " " + __VERSION__
-            return
-
-        # otherwise, run the lolpython program
-        sys.argv = sys.argv[1:]
-        filename = sys.argv[0]
-        execfile(filename, "__main__")
-    else:
-        # commands from stdin
-        execfile(sys.stdin)
-        
-    
-
-if __name__ == "__main__":
-    main(sys.argv)
diff --git a/chall/notes b/chall/notes
deleted file mode 100644
index c6410c5..0000000
--- a/chall/notes
+++ /dev/null
@@ -1,41 +0,0 @@
-Setup a quick docker container with python2 and ply installed to test..
-
-Check out the source code..
-
-First thing we want to find is how the tokens are turned
-into python, since we ideally just want to write python.
-
-We find that tokens of type INLINE are directly injected.
-
-Looking at INLINE tokens we find some which are useful
-for calling functions:
-
-    "ARGZ": ("INLINE", "_lol_sys.argv"),
-    "THINGZ": ("INLINE", "()"),  # invisible tuple didn't sound right
-    "THING": ("INLINE", "()"),   # sometimes it's better in singular form
-    "MY": ("INLINE", "self."),
-    "MYSELF": ("INLINE", "(self)"),
-
-Looks like the sys module was imported as _lol_sys.
-The other tokens allow us to call functions.
-
-Varibles are injected directly too.. this allows us to call
-builtins by specifying the builtin name, followed by THING.
-
-Since we just want to run python code directly we'd
-like to call `eval` with a string. Strings are
-injected directly after some escape character checks.
-
-In the inline tokens we saw there is one that allows
-us to pass an argument.. MYSELF. For that we need
-to define self.. Lets do that as a simple variable
-instead of the normal definition of self.
-
-We find we can define self using CAN HAS..
-We can print the result of the eval using VISIBLE..
-
-Thus our payload becomes:
-
-   self CAN HAS '<PYTHON-CODE>'
-   VISIBLE eval MYSELF
-
diff --git a/chall/ply-2.2.tar.gz b/chall/ply-2.2.tar.gz
new file mode 100644
index 0000000..7db65d9
Binary files /dev/null and b/chall/ply-2.2.tar.gz differ
diff --git a/chall/ply-2.2/ANNOUNCE b/chall/ply-2.2/ANNOUNCE
deleted file mode 100644
index ba96215..0000000
--- a/chall/ply-2.2/ANNOUNCE
+++ /dev/null
@@ -1,48 +0,0 @@
-November 1, 2006
-
-                  Announcing :  PLY-2.2 (Python Lex-Yacc)
-
-                        http://www.dabeaz.com/ply
-
-I'm pleased to announce a significant new update to PLY---a 100% Python
-implementation of the common parsing tools lex and yacc.  PLY-2.2 is
-a minor update that fixes a few bugs and adds some new capabilities.
-
-If you are new to PLY, here are a few highlights:
-
--  PLY is closely modeled after traditional lex/yacc.  If you know how 
-   to use these or similar tools in other languages, you will find
-   PLY to be comparable.
-
--  PLY provides very extensive error reporting and diagnostic
-   information to assist in parser construction.  The original
-   implementation was developed for instructional purposes.  As
-   a result, the system tries to identify the most common types
-   of errors made by novice users.
-
--  PLY provides full support for empty productions, error recovery,
-   precedence rules, and ambiguous grammars.
-
--  Parsing is based on LR-parsing which is fast, memory efficient,
-   better suited to large grammars, and which has a number of nice
-   properties when dealing with syntax errors and other parsing 
-   problems. Currently, PLY can build its parsing tables using 
-   either SLR or LALR(1) algorithms. 
-
--  PLY can be used to build parsers for large programming languages.
-   Although it is not ultra-fast due to its Python implementation,
-   PLY can be used to parse grammars consisting of several hundred
-   rules (as might be found for a language like C).  The lexer and LR
-   parser are also reasonably efficient when parsing normal
-   sized programs.
-
-More information about PLY can be obtained on the PLY webpage at:
-
-                   http://www.dabeaz.com/ply
-
-PLY is freely available and is licensed under the terms of the Lesser
-GNU Public License (LGPL).
-
-Cheers,
-
-David Beazley (http://www.dabeaz.com)
\ No newline at end of file
diff --git a/chall/ply-2.2/CHANGES b/chall/ply-2.2/CHANGES
deleted file mode 100644
index bd0894d..0000000
--- a/chall/ply-2.2/CHANGES
+++ /dev/null
@@ -1,680 +0,0 @@
-Version 2.2
-------------------------------
-11/01/06: beazley
-          Added lexpos() and lexspan() methods to grammar symbols.  These
-          mirror the same functionality of lineno() and linespan().  For
-          example:
-
-          def p_expr(p):
-              'expr : expr PLUS expr'
-               p.lexpos(1)     # Lexing position of left-hand-expression
-               p.lexpos(1)     # Lexing position of PLUS
-               start,end = p.lexspan(3)  # Lexing range of right hand expression
-
-11/01/06: beazley
-          Minor change to error handling.  The recommended way to skip characters
-          in the input is to use t.lexer.skip() as shown here:
-
-             def t_error(t):
-                 print "Illegal character '%s'" % t.value[0]
-                 t.lexer.skip(1)
-          
-          The old approach of just using t.skip(1) will still work, but won't
-          be documented.
-
-10/31/06: beazley
-          Discarded tokens can now be specified as simple strings instead of
-          functions.  To do this, simply include the text "ignore_" in the
-          token declaration.  For example:
-
-              t_ignore_cppcomment = r'//.*'
-          
-          Previously, this had to be done with a function.  For example:
-
-              def t_ignore_cppcomment(t):
-                  r'//.*'
-                  pass
-
-          If start conditions/states are being used, state names should appear
-          before the "ignore_" text.
-
-10/19/06: beazley
-          The Lex module now provides support for flex-style start conditions
-          as described at http://www.gnu.org/software/flex/manual/html_chapter/flex_11.html.
-          Please refer to this document to understand this change note.  Refer to
-          the PLY documentation for PLY-specific explanation of how this works.
-
-          To use start conditions, you first need to declare a set of states in
-          your lexer file:
-
-          states = (
-                    ('foo','exclusive'),
-                    ('bar','inclusive')
-          )
-
-          This serves the same role as the %s and %x specifiers in flex.
-
-          One a state has been declared, tokens for that state can be 
-          declared by defining rules of the form t_state_TOK.  For example:
-
-            t_PLUS = '\+'          # Rule defined in INITIAL state
-            t_foo_NUM = '\d+'      # Rule defined in foo state
-            t_bar_NUM = '\d+'      # Rule defined in bar state
-
-            t_foo_bar_NUM = '\d+'  # Rule defined in both foo and bar
-            t_ANY_NUM = '\d+'      # Rule defined in all states
-
-          In addition to defining tokens for each state, the t_ignore and t_error
-          specifications can be customized for specific states.  For example:
-
-            t_foo_ignore = " "     # Ignored characters for foo state
-            def t_bar_error(t):   
-                # Handle errors in bar state
-
-          With token rules, the following methods can be used to change states
-          
-            def t_TOKNAME(t):
-                t.lexer.begin('foo')        # Begin state 'foo'
-                t.lexer.push_state('foo')   # Begin state 'foo', push old state
-                                            # onto a stack
-                t.lexer.pop_state()         # Restore previous state
-                t.lexer.current_state()     # Returns name of current state
-
-          These methods mirror the BEGIN(), yy_push_state(), yy_pop_state(), and
-          yy_top_state() functions in flex.
-
-          The use of start states can be used as one way to write sub-lexers.
-          For example, the lexer or parser might instruct the lexer to start
-          generating a different set of tokens depending on the context.
-          
-          example/yply/ylex.py shows the use of start states to grab C/C++ 
-          code fragments out of traditional yacc specification files.
-
-          *** NEW FEATURE *** Suggested by Daniel Larraz with whom I also
-          discussed various aspects of the design.
-
-10/19/06: beazley
-          Minor change to the way in which yacc.py was reporting shift/reduce
-          conflicts.  Although the underlying LALR(1) algorithm was correct,
-          PLY was under-reporting the number of conflicts compared to yacc/bison
-          when precedence rules were in effect.  This change should make PLY
-          report the same number of conflicts as yacc.
-
-10/19/06: beazley
-          Modified yacc so that grammar rules could also include the '-' 
-          character.  For example:
-
-            def p_expr_list(p):
-                'expression-list : expression-list expression'
-
-          Suggested by Oldrich Jedlicka.
-
-10/18/06: beazley
-          Attribute lexer.lexmatch added so that token rules can access the re 
-          match object that was generated.  For example:
-
-          def t_FOO(t):
-              r'some regex'
-              m = t.lexer.lexmatch
-              # Do something with m
-
-
-          This may be useful if you want to access named groups specified within
-          the regex for a specific token. Suggested by Oldrich Jedlicka.
-          
-10/16/06: beazley
-          Changed the error message that results if an illegal character
-          is encountered and no default error function is defined in lex.
-          The exception is now more informative about the actual cause of
-          the error.
-      
-Version 2.1
-------------------------------
-10/02/06: beazley
-          The last Lexer object built by lex() can be found in lex.lexer.
-          The last Parser object built  by yacc() can be found in yacc.parser.
-
-10/02/06: beazley
-          New example added:  examples/yply
-
-          This example uses PLY to convert Unix-yacc specification files to
-          PLY programs with the same grammar.   This may be useful if you
-          want to convert a grammar from bison/yacc to use with PLY.
-    
-10/02/06: beazley
-          Added support for a start symbol to be specified in the yacc
-          input file itself.  Just do this:
-
-               start = 'name'
-
-          where 'name' matches some grammar rule.  For example:
-
-               def p_name(p):
-                   'name : A B C'
-                   ...
-
-          This mirrors the functionality of the yacc %start specifier.
-
-09/30/06: beazley
-          Some new examples added.:
-
-          examples/GardenSnake : A simple indentation based language similar
-                                 to Python.  Shows how you might handle 
-                                 whitespace.  Contributed by Andrew Dalke.
-
-          examples/BASIC       : An implementation of 1964 Dartmouth BASIC.
-                                 Contributed by Dave against his better
-                                 judgement.
-
-09/28/06: beazley
-          Minor patch to allow named groups to be used in lex regular
-          expression rules.  For example:
-
-              t_QSTRING = r'''(?P<quote>['"]).*?(?P=quote)'''
-
-          Patch submitted by Adam Ring.
- 
-09/28/06: beazley
-          LALR(1) is now the default parsing method.   To use SLR, use
-          yacc.yacc(method="SLR").  Note: there is no performance impact
-          on parsing when using LALR(1) instead of SLR. However, constructing
-          the parsing tables will take a little longer.
-
-09/26/06: beazley
-          Change to line number tracking.  To modify line numbers, modify
-          the line number of the lexer itself.  For example:
-
-          def t_NEWLINE(t):
-              r'\n'
-              t.lexer.lineno += 1
-
-          This modification is both cleanup and a performance optimization.
-          In past versions, lex was monitoring every token for changes in
-          the line number.  This extra processing is unnecessary for a vast
-          majority of tokens. Thus, this new approach cleans it up a bit.
-
-          *** POTENTIAL INCOMPATIBILITY ***
-          You will need to change code in your lexer that updates the line
-          number. For example, "t.lineno += 1" becomes "t.lexer.lineno += 1"
-         
-09/26/06: beazley
-          Added the lexing position to tokens as an attribute lexpos. This
-          is the raw index into the input text at which a token appears.
-          This information can be used to compute column numbers and other
-          details (e.g., scan backwards from lexpos to the first newline
-          to get a column position).
-
-09/25/06: beazley
-          Changed the name of the __copy__() method on the Lexer class
-          to clone().  This is used to clone a Lexer object (e.g., if
-          you're running different lexers at the same time).
-
-09/21/06: beazley
-          Limitations related to the use of the re module have been eliminated.
-          Several users reported problems with regular expressions exceeding
-          more than 100 named groups. To solve this, lex.py is now capable
-          of automatically splitting its master regular regular expression into
-          smaller expressions as needed.   This should, in theory, make it
-          possible to specify an arbitrarily large number of tokens.
-
-09/21/06: beazley
-          Improved error checking in lex.py.  Rules that match the empty string
-          are now rejected (otherwise they cause the lexer to enter an infinite
-          loop).  An extra check for rules containing '#' has also been added.
-          Since lex compiles regular expressions in verbose mode, '#' is interpreted
-          as a regex comment, it is critical to use '\#' instead.  
-
-09/18/06: beazley
-          Added a @TOKEN decorator function to lex.py that can be used to 
-          define token rules where the documentation string might be computed
-          in some way.
-          
-          digit            = r'([0-9])'
-          nondigit         = r'([_A-Za-z])'
-          identifier       = r'(' + nondigit + r'(' + digit + r'|' + nondigit + r')*)'        
-
-          from ply.lex import TOKEN
-
-          @TOKEN(identifier)
-          def t_ID(t):
-               # Do whatever
-
-          The @TOKEN decorator merely sets the documentation string of the
-          associated token function as needed for lex to work.  
-
-          Note: An alternative solution is the following:
-
-          def t_ID(t):
-              # Do whatever
-   
-          t_ID.__doc__ = identifier
-
-          Note: Decorators require the use of Python 2.4 or later.  If compatibility
-          with old versions is needed, use the latter solution.
-
-          The need for this feature was suggested by Cem Karan.
-
-09/14/06: beazley
-          Support for single-character literal tokens has been added to yacc.
-          These literals must be enclosed in quotes.  For example:
-
-          def p_expr(p):
-               "expr : expr '+' expr"
-               ...
-
-          def p_expr(p):
-               'expr : expr "-" expr'
-               ...
-
-          In addition to this, it is necessary to tell the lexer module about
-          literal characters.   This is done by defining the variable 'literals'
-          as a list of characters.  This should  be defined in the module that
-          invokes the lex.lex() function.  For example:
-
-             literals = ['+','-','*','/','(',')','=']
- 
-          or simply
-
-             literals = '+=*/()='
-
-          It is important to note that literals can only be a single character.
-          When the lexer fails to match a token using its normal regular expression
-          rules, it will check the current character against the literal list.
-          If found, it will be returned with a token type set to match the literal
-          character.  Otherwise, an illegal character will be signalled.
-
-
-09/14/06: beazley
-          Modified PLY to install itself as a proper Python package called 'ply'.
-          This will make it a little more friendly to other modules.  This
-          changes the usage of PLY only slightly.  Just do this to import the
-          modules
-
-                import ply.lex as lex
-                import ply.yacc as yacc
-
-          Alternatively, you can do this:
-
-                from ply import *
-
-          Which imports both the lex and yacc modules.
-          Change suggested by Lee June.
-
-09/13/06: beazley
-          Changed the handling of negative indices when used in production rules.
-          A negative production index now accesses already parsed symbols on the
-          parsing stack.  For example, 
-
-              def p_foo(p):
-                   "foo: A B C D"
-                   print p[1]       # Value of 'A' symbol
-                   print p[2]       # Value of 'B' symbol
-                   print p[-1]      # Value of whatever symbol appears before A
-                                    # on the parsing stack.
-
-                   p[0] = some_val  # Sets the value of the 'foo' grammer symbol
-                                    
-          This behavior makes it easier to work with embedded actions within the
-          parsing rules. For example, in C-yacc, it is possible to write code like
-          this:
-
-               bar:   A { printf("seen an A = %d\n", $1); } B { do_stuff; }
-
-          In this example, the printf() code executes immediately after A has been
-          parsed.  Within the embedded action code, $1 refers to the A symbol on
-          the stack.
-
-          To perform this equivalent action in PLY, you need to write a pair
-          of rules like this:
-
-               def p_bar(p):
-                     "bar : A seen_A B"
-                     do_stuff
-
-               def p_seen_A(p):
-                     "seen_A :"
-                     print "seen an A =", p[-1]
-
-          The second rule "seen_A" is merely a empty production which should be
-          reduced as soon as A is parsed in the "bar" rule above.  The use 
-          of the negative index p[-1] is used to access whatever symbol appeared
-          before the seen_A symbol.
-
-          This feature also makes it possible to support inherited attributes.
-          For example:
-
-               def p_decl(p):
-                     "decl : scope name"
-
-               def p_scope(p):
-                     """scope : GLOBAL
-                              | LOCAL"""
-                   p[0] = p[1]
-
-               def p_name(p):
-                     "name : ID"
-                     if p[-1] == "GLOBAL":
-                          # ...
-                     else if p[-1] == "LOCAL":
-                          #...
-
-          In this case, the name rule is inheriting an attribute from the
-          scope declaration that precedes it.
-       
-          *** POTENTIAL INCOMPATIBILITY ***
-          If you are currently using negative indices within existing grammar rules,
-          your code will break.  This should be extremely rare if non-existent in
-          most cases.  The argument to various grammar rules is not usually not
-          processed in the same way as a list of items.
-          
-Version 2.0
-------------------------------
-09/07/06: beazley
-          Major cleanup and refactoring of the LR table generation code.  Both SLR
-          and LALR(1) table generation is now performed by the same code base with
-          only minor extensions for extra LALR(1) processing.
-
-09/07/06: beazley
-          Completely reimplemented the entire LALR(1) parsing engine to use the
-          DeRemer and Pennello algorithm for calculating lookahead sets.  This
-          significantly improves the performance of generating LALR(1) tables
-          and has the added feature of actually working correctly!  If you
-          experienced weird behavior with LALR(1) in prior releases, this should
-          hopefully resolve all of those problems.  Many thanks to 
-          Andrew Waters and Markus Schoepflin for submitting bug reports
-          and helping me test out the revised LALR(1) support.
-
-Version 1.8
-------------------------------
-08/02/06: beazley
-          Fixed a problem related to the handling of default actions in LALR(1)
-          parsing.  If you experienced subtle and/or bizarre behavior when trying
-          to use the LALR(1) engine, this may correct those problems.  Patch
-          contributed by Russ Cox.  Note: This patch has been superceded by 
-          revisions for LALR(1) parsing in Ply-2.0.
-
-08/02/06: beazley
-          Added support for slicing of productions in yacc.  
-          Patch contributed by Patrick Mezard.
-
-Version 1.7
-------------------------------
-03/02/06: beazley
-          Fixed infinite recursion problem ReduceToTerminals() function that
-          would sometimes come up in LALR(1) table generation.  Reported by 
-          Markus Schoepflin.
-
-03/01/06: beazley
-          Added "reflags" argument to lex().  For example:
-
-               lex.lex(reflags=re.UNICODE)
-
-          This can be used to specify optional flags to the re.compile() function
-          used inside the lexer.   This may be necessary for special situations such
-          as processing Unicode (e.g., if you want escapes like \w and \b to consult
-          the Unicode character property database).   The need for this suggested by
-          Andreas Jung.
-
-03/01/06: beazley
-          Fixed a bug with an uninitialized variable on repeated instantiations of parser
-          objects when the write_tables=0 argument was used.   Reported by Michael Brown.
-
-03/01/06: beazley
-          Modified lex.py to accept Unicode strings both as the regular expressions for
-          tokens and as input. Hopefully this is the only change needed for Unicode support.
-          Patch contributed by Johan Dahl.
-
-03/01/06: beazley
-          Modified the class-based interface to work with new-style or old-style classes.
-          Patch contributed by Michael Brown (although I tweaked it slightly so it would work
-          with older versions of Python).
-
-Version 1.6
-------------------------------
-05/27/05: beazley
-          Incorporated patch contributed by Christopher Stawarz to fix an extremely
-          devious bug in LALR(1) parser generation.   This patch should fix problems
-          numerous people reported with LALR parsing.
-
-05/27/05: beazley
-          Fixed problem with lex.py copy constructor.  Reported by Dave Aitel, Aaron Lav,
-          and Thad Austin. 
-
-05/27/05: beazley
-          Added outputdir option to yacc()  to control output directory. Contributed
-          by Christopher Stawarz.
-
-05/27/05: beazley
-          Added rununit.py test script to run tests using the Python unittest module.
-          Contributed by Miki Tebeka.
-
-Version 1.5
-------------------------------
-05/26/04: beazley
-          Major enhancement. LALR(1) parsing support is now working.
-          This feature was implemented by Elias Ioup (ezioup@alumni.uchicago.edu)
-          and optimized by David Beazley. To use LALR(1) parsing do
-          the following:
-
-               yacc.yacc(method="LALR")
-
-          Computing LALR(1) parsing tables takes about twice as long as
-          the default SLR method.  However, LALR(1) allows you to handle
-          more complex grammars.  For example, the ANSI C grammar
-          (in example/ansic) has 13 shift-reduce conflicts with SLR, but
-          only has 1 shift-reduce conflict with LALR(1).
-
-05/20/04: beazley
-          Added a __len__ method to parser production lists.  Can
-          be used in parser rules like this:
-
-             def p_somerule(p):
-                 """a : B C D
-                      | E F"
-                 if (len(p) == 3):
-                     # Must have been first rule
-                 elif (len(p) == 2):
-                     # Must be second rule
-
-          Suggested by Joshua Gerth and others.
-
-Version 1.4
-------------------------------
-04/23/04: beazley
-          Incorporated a variety of patches contributed by Eric Raymond.
-          These include:
-
-           0. Cleans up some comments so they don't wrap on an 80-column display.
-           1. Directs compiler errors to stderr where they belong.
-           2. Implements and documents automatic line counting when \n is ignored.
-           3. Changes the way progress messages are dumped when debugging is on. 
-              The new format is both less verbose and conveys more information than
-              the old, including shift and reduce actions.
-
-04/23/04: beazley
-          Added a Python setup.py file to simply installation.  Contributed
-          by Adam Kerrison.
-
-04/23/04: beazley
-          Added patches contributed by Adam Kerrison.
- 
-          -   Some output is now only shown when debugging is enabled.  This
-              means that PLY will be completely silent when not in debugging mode.
-          
-          -   An optional parameter "write_tables" can be passed to yacc() to
-              control whether or not parsing tables are written.   By default,
-              it is true, but it can be turned off if you don't want the yacc
-              table file. Note: disabling this will cause yacc() to regenerate
-              the parsing table each time.
-
-04/23/04: beazley
-          Added patches contributed by David McNab.  This patch addes two
-          features:
-
-          -   The parser can be supplied as a class instead of a module.
-              For an example of this, see the example/classcalc directory.
-
-          -   Debugging output can be directed to a filename of the user's
-              choice.  Use
-
-                 yacc(debugfile="somefile.out")
-
-          
-Version 1.3
-------------------------------
-12/10/02: jmdyck
-          Various minor adjustments to the code that Dave checked in today.
-          Updated test/yacc_{inf,unused}.exp to reflect today's changes.
-
-12/10/02: beazley
-          Incorporated a variety of minor bug fixes to empty production
-          handling and infinite recursion checking.  Contributed by
-          Michael Dyck.
-
-12/10/02: beazley
-          Removed bogus recover() method call in yacc.restart()
-
-Version 1.2
-------------------------------
-11/27/02: beazley
-          Lexer and parser objects are now available as an attribute
-          of tokens and slices respectively. For example:
- 
-             def t_NUMBER(t):
-                 r'\d+'
-                 print t.lexer
-
-             def p_expr_plus(t):
-                 'expr: expr PLUS expr'
-                 print t.lexer
-                 print t.parser
-
-          This can be used for state management (if needed).
- 
-10/31/02: beazley
-          Modified yacc.py to work with Python optimize mode.  To make
-          this work, you need to use
-
-              yacc.yacc(optimize=1)
-
-          Furthermore, you need to first run Python in normal mode
-          to generate the necessary parsetab.py files.  After that,
-          you can use python -O or python -OO.  
-
-          Note: optimized mode turns off a lot of error checking.
-          Only use when you are sure that your grammar is working.
-          Make sure parsetab.py is up to date!
-
-10/30/02: beazley
-          Added cloning of Lexer objects.   For example:
-
-              import copy
-              l = lex.lex()
-              lc = copy.copy(l)
-
-              l.input("Some text")
-              lc.input("Some other text")
-              ...
-
-          This might be useful if the same "lexer" is meant to
-          be used in different contexts---or if multiple lexers
-          are running concurrently.
-                
-10/30/02: beazley
-          Fixed subtle bug with first set computation and empty productions.
-          Patch submitted by Michael Dyck.
-
-10/30/02: beazley
-          Fixed error messages to use "filename:line: message" instead
-          of "filename:line. message".  This makes error reporting more
-          friendly to emacs. Patch submitted by François Pinard.
-
-10/30/02: beazley
-          Improvements to parser.out file.  Terminals and nonterminals
-          are sorted instead of being printed in random order.
-          Patch submitted by François Pinard.
-
-10/30/02: beazley
-          Improvements to parser.out file output.  Rules are now printed
-          in a way that's easier to understand.  Contributed by Russ Cox.
-
-10/30/02: beazley
-          Added 'nonassoc' associativity support.    This can be used
-          to disable the chaining of operators like a < b < c.
-          To use, simply specify 'nonassoc' in the precedence table
-
-          precedence = (
-            ('nonassoc', 'LESSTHAN', 'GREATERTHAN'),  # Nonassociative operators
-            ('left', 'PLUS', 'MINUS'),
-            ('left', 'TIMES', 'DIVIDE'),
-            ('right', 'UMINUS'),            # Unary minus operator
-          )
-
-          Patch contributed by Russ Cox.
-
-10/30/02: beazley
-          Modified the lexer to provide optional support for Python -O and -OO
-          modes.  To make this work, Python *first* needs to be run in
-          unoptimized mode.  This reads the lexing information and creates a
-          file "lextab.py".  Then, run lex like this:
-
-                   # module foo.py
-                   ...
-                   ...
-                   lex.lex(optimize=1)
-
-          Once the lextab file has been created, subsequent calls to
-          lex.lex() will read data from the lextab file instead of using 
-          introspection.   In optimized mode (-O, -OO) everything should
-          work normally despite the loss of doc strings.
-
-          To change the name of the file 'lextab.py' use the following:
-
-                  lex.lex(lextab="footab")
-
-          (this creates a file footab.py)
-         
-
-Version 1.1   October 25, 2001
-------------------------------
-
-10/25/01: beazley
-          Modified the table generator to produce much more compact data.
-          This should greatly reduce the size of the parsetab.py[c] file.
-          Caveat: the tables still need to be constructed so a little more
-          work is done in parsetab on import. 
-
-10/25/01: beazley
-          There may be a possible bug in the cycle detector that reports errors
-          about infinite recursion.   I'm having a little trouble tracking it
-          down, but if you get this problem, you can disable the cycle
-          detector as follows:
-
-                 yacc.yacc(check_recursion = 0)
-
-10/25/01: beazley
-          Fixed a bug in lex.py that sometimes caused illegal characters to be
-          reported incorrectly.  Reported by Sverre Jørgensen.
-
-7/8/01  : beazley
-          Added a reference to the underlying lexer object when tokens are handled by
-          functions.   The lexer is available as the 'lexer' attribute.   This
-          was added to provide better lexing support for languages such as Fortran
-          where certain types of tokens can't be conveniently expressed as regular 
-          expressions (and where the tokenizing function may want to perform a 
-          little backtracking).  Suggested by Pearu Peterson.
-
-6/20/01 : beazley
-          Modified yacc() function so that an optional starting symbol can be specified.
-          For example:
-            
-                 yacc.yacc(start="statement")
-
-          Normally yacc always treats the first production rule as the starting symbol.
-          However, if you are debugging your grammar it may be useful to specify
-          an alternative starting symbol.  Idea suggested by Rich Salz.
-                      
-Version 1.0  June 18, 2001
---------------------------
-Initial public offering
-
diff --git a/chall/ply-2.2/COPYING b/chall/ply-2.2/COPYING
deleted file mode 100644
index b1e3f5a..0000000
--- a/chall/ply-2.2/COPYING
+++ /dev/null
@@ -1,504 +0,0 @@
-		  GNU LESSER GENERAL PUBLIC LICENSE
-		       Version 2.1, February 1999
-
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-     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- Everyone is permitted to copy and distribute verbatim copies
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-
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-possible use to the public, we recommend making it free software that
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-"copyright" line and a pointer to where the full notice is found.
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-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
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-    License along with this library; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
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-
-  <signature of Ty Coon>, 1 April 1990
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-
-That's all there is to it!
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-
diff --git a/chall/ply-2.2/README b/chall/ply-2.2/README
deleted file mode 100644
index d91e26c..0000000
--- a/chall/ply-2.2/README
+++ /dev/null
@@ -1,277 +0,0 @@
-PLY (Python Lex-Yacc)                   Version 2.2  (November 1, 2006)
-
-David M. Beazley (dave@dabeaz.com)
-
-Copyright (C) 2001-2006   David M. Beazley
-
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
-See the file COPYING for a complete copy of the LGPL.
-
-Introduction
-============
-
-PLY is a 100% Python implementation of the common parsing tools lex
-and yacc.   Although several other parsing tools are available for
-Python, there are several reasons why you might want to consider PLY:
-
- -  The tools are very closely modeled after traditional lex/yacc.
-    If you know how to use these tools in C, you will find PLY
-    to be similar.
-
- -  PLY provides *very* extensive error reporting and diagnostic 
-    information to assist in parser construction.  The original
-    implementation was developed for instructional purposes.  As
-    a result, the system tries to identify the most common types
-    of errors made by novice users.  
-
- -  PLY provides full support for empty productions, error recovery,
-    precedence specifiers, and moderately ambiguous grammars.
-
- -  Parsing is based on LR-parsing which is fast, memory efficient, 
-    better suited to large grammars, and which has a number of nice
-    properties when dealing with syntax errors and other parsing problems.
-    Currently, PLY builds its parsing tables using the SLR algorithm which 
-    is slightly weaker than LALR(1) used in traditional yacc. 
-
- -  PLY uses Python introspection features to build lexers and parsers.  
-    This greatly simplifies the task of parser construction since it reduces 
-    the number of files and eliminates the need to run a separate lex/yacc 
-    tool before running your program.
-
- -  PLY can be used to build parsers for "real" programming languages.
-    Although it is not ultra-fast due to its Python implementation,
-    PLY can be used to parse grammars consisting of several hundred
-    rules (as might be found for a language like C).  The lexer and LR 
-    parser are also reasonably efficient when parsing typically
-    sized programs.
-
-The original version of PLY was developed for an Introduction to
-Compilers course where students used it to build a compiler for a
-simple Pascal-like language.  Their compiler had to include lexical
-analysis, parsing, type checking, type inference, and generation of
-assembly code for the SPARC processor.  Because of this, the current
-implementation has been extensively tested and debugged.  In addition,
-most of the API and error checking steps have been adapted to address
-common usability problems.
-
-How to Use
-==========
-
-PLY consists of two files : lex.py and yacc.py.  These are contained
-within the 'ply' directory which may also be used as a Python package.
-To use PLY, simply copy the 'ply' directory to your project and import
-lex and yacc from the associated 'ply' package.  For example:
-
-     import ply.lex as lex
-     import ply.yacc as yacc
-
-Alternatively, you can copy just the files lex.py and yacc.py
-individually and use them as modules.  For example:
-
-     import lex
-     import yacc
-
-The file setup.py can be used to install ply using distutils.
-
-The file doc/ply.html contains complete documentation on how to use
-the system.
-
-The example directory contains several different examples including a
-PLY specification for ANSI C as given in K&R 2nd Ed.   
-
-A simple example is found at the end of this document
-
-Requirements
-============
-PLY requires the use of Python 2.0 or greater.  It should work on
-just about any platform.  PLY has been tested with both CPython and
-Jython.  However, it does not work with IronPython.
-
-Resources
-=========
-More information about PLY can be obtained on the PLY webpage at:
-
-     http://www.dabeaz.com/ply
-
-For a detailed overview of parsing theory, consult the excellent
-book "Compilers : Principles, Techniques, and Tools" by Aho, Sethi, and
-Ullman.  The topics found in "Lex & Yacc" by Levine, Mason, and Brown
-may also be useful.
-
-A Google group for PLY can be found at
-
-     http://groups.google.com/group/ply-hack
-
-Acknowledgments
-===============
-A special thanks is in order for all of the students in CS326 who
-suffered through about 25 different versions of these tools :-).
-
-The CHANGES file acknowledges those who have contributed patches.
-
-Elias Ioup did the first implementation of LALR(1) parsing in PLY-1.x. 
-Andrew Waters and Markus Schoepflin were instrumental in reporting bugs
-and testing a revised LALR(1) implementation for PLY-2.0.
-
-Special Note for PLY-2.x
-========================
-PLY-2.0 is the first in a series of PLY releases that will be adding a
-variety of significant new features.  The first release in this series
-(Ply-2.0) should be 100% compatible with all previous Ply-1.x releases
-except for the fact that Ply-2.0 features a correct implementation of
-LALR(1) table generation.  
-
-If you have suggestions for improving PLY in future 2.x releases, please
-contact me.   - Dave
-
-Example
-=======
-
-Here is a simple example showing a PLY implementation of a calculator
-with variables.
-
-# -----------------------------------------------------------------------------
-# calc.py
-#
-# A simple calculator with variables.
-# -----------------------------------------------------------------------------
-
-tokens = (
-    'NAME','NUMBER',
-    'PLUS','MINUS','TIMES','DIVIDE','EQUALS',
-    'LPAREN','RPAREN',
-    )
-
-# Tokens
-
-t_PLUS    = r'\+'
-t_MINUS   = r'-'
-t_TIMES   = r'\*'
-t_DIVIDE  = r'/'
-t_EQUALS  = r'='
-t_LPAREN  = r'\('
-t_RPAREN  = r'\)'
-t_NAME    = r'[a-zA-Z_][a-zA-Z0-9_]*'
-
-def t_NUMBER(t):
-    r'\d+'
-    try:
-        t.value = int(t.value)
-    except ValueError:
-        print "Integer value too large", t.value
-        t.value = 0
-    return t
-
-# Ignored characters
-t_ignore = " \t"
-
-def t_newline(t):
-    r'\n+'
-    t.lexer.lineno += t.value.count("\n")
-    
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-    
-# Build the lexer
-import ply.lex as lex
-lex.lex()
-
-# Precedence rules for the arithmetic operators
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names (for storing variables)
-names = { }
-
-def p_statement_assign(p):
-    'statement : NAME EQUALS expression'
-    names[p[1]] = p[3]
-
-def p_statement_expr(p):
-    'statement : expression'
-    print p[1]
-
-def p_expression_binop(p):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if p[2] == '+'  : p[0] = p[1] + p[3]
-    elif p[2] == '-': p[0] = p[1] - p[3]
-    elif p[2] == '*': p[0] = p[1] * p[3]
-    elif p[2] == '/': p[0] = p[1] / p[3]
-
-def p_expression_uminus(p):
-    'expression : MINUS expression %prec UMINUS'
-    p[0] = -p[2]
-
-def p_expression_group(p):
-    'expression : LPAREN expression RPAREN'
-    p[0] = p[2]
-
-def p_expression_number(p):
-    'expression : NUMBER'
-    p[0] = p[1]
-
-def p_expression_name(p):
-    'expression : NAME'
-    try:
-        p[0] = names[p[1]]
-    except LookupError:
-        print "Undefined name '%s'" % p[1]
-        p[0] = 0
-
-def p_error(p):
-    print "Syntax error at '%s'" % p.value
-
-import ply.yacc as yacc
-yacc.yacc()
-
-while 1:
-    try:
-        s = raw_input('calc > ')
-    except EOFError:
-        break
-    yacc.parse(s)
-
-
-Bug Reports and Patches
-=======================
-Because of the extremely specialized and advanced nature of PLY, I
-rarely spend much time working on it unless I receive very specific
-bug-reports and/or patches to fix problems. I also try to incorporate
-submitted feature requests and enhancements into each new version.  To
-contact me about bugs and/or new features, please send email to
-dave@dabeaz.com.
-
-In addition there is a Google group for discussing PLY related issues at
-
-    http://groups.google.com/group/ply-hack
- 
--- Dave
-
-
-
-
-
-
-
-
-
diff --git a/chall/ply-2.2/TODO b/chall/ply-2.2/TODO
deleted file mode 100644
index 7139d53..0000000
--- a/chall/ply-2.2/TODO
+++ /dev/null
@@ -1,14 +0,0 @@
-The PLY to-do list:
-
-1. More interesting parsing examples.
-
-2. Work on the ANSI C grammar so that it can actually parse C programs.  To do this,
-   some extra code needs to be added to the lexer to deal with typedef names and enumeration
-   constants.
-
-3. More tests in the test directory.
-
-4. Performance improvements and cleanup in yacc.py.
-
-5. More documentation (?).
-
diff --git a/chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/__init__.py b/chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/__init__.py
deleted file mode 100644
index 853a985..0000000
--- a/chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/__init__.py
+++ /dev/null
@@ -1,4 +0,0 @@
-# PLY package
-# Author: David Beazley (dave@dabeaz.com)
-
-__all__ = ['lex','yacc']
diff --git a/chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/lex.py b/chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/lex.py
deleted file mode 100644
index c149366..0000000
--- a/chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/lex.py
+++ /dev/null
@@ -1,866 +0,0 @@
-#-----------------------------------------------------------------------------
-# ply: lex.py
-#
-# Author: David M. Beazley (dave@dabeaz.com)
-#
-# Copyright (C) 2001-2006, David M. Beazley
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public
-# License as published by the Free Software Foundation; either
-# version 2.1 of the License, or (at your option) any later version.
-# 
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Lesser General Public License for more details.
-# 
-# You should have received a copy of the GNU Lesser General Public
-# License along with this library; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-# 
-# See the file COPYING for a complete copy of the LGPL.
-#-----------------------------------------------------------------------------
-
-__version__ = "2.2"
-
-import re, sys, types
-
-# Regular expression used to match valid token names
-_is_identifier = re.compile(r'^[a-zA-Z0-9_]+$')
-
-# Available instance types.  This is used when lexers are defined by a class.
-# It's a little funky because I want to preserve backwards compatibility
-# with Python 2.0 where types.ObjectType is undefined.
-
-try:
-   _INSTANCETYPE = (types.InstanceType, types.ObjectType)
-except AttributeError:
-   _INSTANCETYPE = types.InstanceType
-   class object: pass       # Note: needed if no new-style classes present
-
-# Exception thrown when invalid token encountered and no default error
-# handler is defined.
-class LexError(Exception):
-    def __init__(self,message,s):
-         self.args = (message,)
-         self.text = s
-
-# Token class
-class LexToken(object):
-    def __str__(self):
-        return "LexToken(%s,%r,%d,%d)" % (self.type,self.value,self.lineno,self.lexpos)
-    def __repr__(self):
-        return str(self)
-    def skip(self,n):
-        self.lexer.skip(n)
-
-# -----------------------------------------------------------------------------
-# Lexer class
-#
-# This class encapsulates all of the methods and data associated with a lexer.
-#
-#    input()          -  Store a new string in the lexer
-#    token()          -  Get the next token
-# -----------------------------------------------------------------------------
-
-class Lexer:
-    def __init__(self):
-        self.lexre = None             # Master regular expression. This is a list of 
-                                      # tuples (re,findex) where re is a compiled
-                                      # regular expression and findex is a list
-                                      # mapping regex group numbers to rules
-        self.lexretext = None         # Current regular expression strings
-        self.lexstatere = {}          # Dictionary mapping lexer states to master regexs
-        self.lexstateretext = {}      # Dictionary mapping lexer states to regex strings
-        self.lexstate = "INITIAL"     # Current lexer state
-        self.lexstatestack = []       # Stack of lexer states
-        self.lexstateinfo = None      # State information
-        self.lexstateignore = {}      # Dictionary of ignored characters for each state
-        self.lexstateerrorf = {}      # Dictionary of error functions for each state
-        self.lexreflags = 0           # Optional re compile flags
-        self.lexdata = None           # Actual input data (as a string)
-        self.lexpos = 0               # Current position in input text
-        self.lexlen = 0               # Length of the input text
-        self.lexerrorf = None         # Error rule (if any)
-        self.lextokens = None         # List of valid tokens
-        self.lexignore = ""           # Ignored characters
-        self.lexliterals = ""         # Literal characters that can be passed through
-        self.lexmodule = None         # Module
-        self.lineno = 1               # Current line number
-        self.lexdebug = 0             # Debugging mode
-        self.lexoptimize = 0          # Optimized mode
-
-    def clone(self,object=None):
-        c = Lexer()
-        c.lexstatere = self.lexstatere
-        c.lexstateinfo = self.lexstateinfo
-        c.lexstateretext = self.lexstateretext
-        c.lexstate = self.lexstate
-        c.lexstatestack = self.lexstatestack
-        c.lexstateignore = self.lexstateignore
-        c.lexstateerrorf = self.lexstateerrorf
-        c.lexreflags = self.lexreflags
-        c.lexdata = self.lexdata
-        c.lexpos = self.lexpos
-        c.lexlen = self.lexlen
-        c.lextokens = self.lextokens
-        c.lexdebug = self.lexdebug
-        c.lineno = self.lineno
-        c.lexoptimize = self.lexoptimize
-        c.lexliterals = self.lexliterals
-        c.lexmodule   = self.lexmodule
-
-        # If the object parameter has been supplied, it means we are attaching the
-        # lexer to a new object.  In this case, we have to rebind all methods in
-        # the lexstatere and lexstateerrorf tables.
-
-        if object:
-            newtab = { }
-            for key, ritem in self.lexstatere.items():
-                newre = []
-                for cre, findex in ritem:
-                     newfindex = []
-                     for f in findex:
-                         if not f or not f[0]:
-                             newfindex.append(f)
-                             continue
-                         newfindex.append((getattr(object,f[0].__name__),f[1]))
-                newre.append((cre,newfindex))
-                newtab[key] = newre
-            c.lexstatere = newtab
-            c.lexstateerrorf = { }
-            for key, ef in self.lexstateerrorf.items():
-                c.lexstateerrorf[key] = getattr(object,ef.__name__)
-            c.lexmodule = object
-
-        # Set up other attributes
-        c.begin(c.lexstate)
-        return c
-
-    # ------------------------------------------------------------
-    # writetab() - Write lexer information to a table file
-    # ------------------------------------------------------------
-    def writetab(self,tabfile):
-        tf = open(tabfile+".py","w")
-        tf.write("# %s.py. This file automatically created by PLY (version %s). Don't edit!\n" % (tabfile,__version__))
-        tf.write("_lextokens    = %s\n" % repr(self.lextokens))
-        tf.write("_lexreflags   = %s\n" % repr(self.lexreflags))
-        tf.write("_lexliterals  = %s\n" % repr(self.lexliterals))
-        tf.write("_lexstateinfo = %s\n" % repr(self.lexstateinfo))
-        
-        tabre = { }
-        for key, lre in self.lexstatere.items():
-             titem = []
-             for i in range(len(lre)):
-                  titem.append((self.lexstateretext[key][i],_funcs_to_names(lre[i][1])))
-             tabre[key] = titem
-
-        tf.write("_lexstatere   = %s\n" % repr(tabre))
-        tf.write("_lexstateignore = %s\n" % repr(self.lexstateignore))
-
-        taberr = { }
-        for key, ef in self.lexstateerrorf.items():
-             if ef:
-                  taberr[key] = ef.__name__
-             else:
-                  taberr[key] = None
-        tf.write("_lexstateerrorf = %s\n" % repr(taberr))
-        tf.close()
-
-    # ------------------------------------------------------------
-    # readtab() - Read lexer information from a tab file
-    # ------------------------------------------------------------
-    def readtab(self,tabfile,fdict):
-        exec "import %s as lextab" % tabfile
-        self.lextokens      = lextab._lextokens
-        self.lexreflags     = lextab._lexreflags
-        self.lexliterals    = lextab._lexliterals
-        self.lexstateinfo   = lextab._lexstateinfo
-        self.lexstateignore = lextab._lexstateignore
-        self.lexstatere     = { }
-        self.lexstateretext = { }
-        for key,lre in lextab._lexstatere.items():
-             titem = []
-             txtitem = []
-             for i in range(len(lre)):
-                  titem.append((re.compile(lre[i][0],lextab._lexreflags),_names_to_funcs(lre[i][1],fdict)))
-                  txtitem.append(lre[i][0])
-             self.lexstatere[key] = titem
-             self.lexstateretext[key] = txtitem
-        self.lexstateerrorf = { }
-        for key,ef in lextab._lexstateerrorf.items():
-             self.lexstateerrorf[key] = fdict[ef]
-        self.begin('INITIAL')
-         
-    # ------------------------------------------------------------
-    # input() - Push a new string into the lexer
-    # ------------------------------------------------------------
-    def input(self,s):
-        if not (isinstance(s,types.StringType) or isinstance(s,types.UnicodeType)):
-            raise ValueError, "Expected a string"
-        self.lexdata = s
-        self.lexpos = 0
-        self.lexlen = len(s)
-
-    # ------------------------------------------------------------
-    # begin() - Changes the lexing state
-    # ------------------------------------------------------------
-    def begin(self,state):
-        if not self.lexstatere.has_key(state):
-            raise ValueError, "Undefined state"
-        self.lexre = self.lexstatere[state]
-        self.lexretext = self.lexstateretext[state]
-        self.lexignore = self.lexstateignore.get(state,"")
-        self.lexerrorf = self.lexstateerrorf.get(state,None)
-        self.lexstate = state
-
-    # ------------------------------------------------------------
-    # push_state() - Changes the lexing state and saves old on stack
-    # ------------------------------------------------------------
-    def push_state(self,state):
-        self.lexstatestack.append(self.lexstate)
-        self.begin(state)
-
-    # ------------------------------------------------------------
-    # pop_state() - Restores the previous state
-    # ------------------------------------------------------------
-    def pop_state(self):
-        self.begin(self.lexstatestack.pop())
-
-    # ------------------------------------------------------------
-    # current_state() - Returns the current lexing state
-    # ------------------------------------------------------------
-    def current_state(self):
-        return self.lexstate
-
-    # ------------------------------------------------------------
-    # skip() - Skip ahead n characters
-    # ------------------------------------------------------------
-    def skip(self,n):
-        self.lexpos += n
-
-    # ------------------------------------------------------------
-    # token() - Return the next token from the Lexer
-    #
-    # Note: This function has been carefully implemented to be as fast
-    # as possible.  Don't make changes unless you really know what
-    # you are doing
-    # ------------------------------------------------------------
-    def token(self):
-        # Make local copies of frequently referenced attributes
-        lexpos    = self.lexpos
-        lexlen    = self.lexlen
-        lexignore = self.lexignore
-        lexdata   = self.lexdata
-
-        while lexpos < lexlen:
-            # This code provides some short-circuit code for whitespace, tabs, and other ignored characters
-            if lexdata[lexpos] in lexignore:
-                lexpos += 1
-                continue
-
-            # Look for a regular expression match
-            for lexre,lexindexfunc in self.lexre:
-                m = lexre.match(lexdata,lexpos)
-                if not m: continue
-
-                # Set last match in lexer so that rules can access it if they want
-                self.lexmatch = m
-
-                # Create a token for return
-                tok = LexToken()
-                tok.value = m.group()
-                tok.lineno = self.lineno
-                tok.lexpos = lexpos
-                tok.lexer = self
-
-                lexpos = m.end()
-                i = m.lastindex
-                func,tok.type = lexindexfunc[i]
-                self.lexpos = lexpos
-
-                if not func:
-                   # If no token type was set, it's an ignored token
-                   if tok.type: return tok      
-                   break
-
-                # if func not callable, it means it's an ignored token                
-                if not callable(func):
-                   break 
-
-                # If token is processed by a function, call it
-                newtok = func(tok)
-                
-                # Every function must return a token, if nothing, we just move to next token
-                if not newtok: 
-                    lexpos = self.lexpos        # This is here in case user has updated lexpos.
-                    break
-                
-                # Verify type of the token.  If not in the token map, raise an error
-                if not self.lexoptimize:
-                    if not self.lextokens.has_key(newtok.type):
-                        raise LexError, ("%s:%d: Rule '%s' returned an unknown token type '%s'" % (
-                            func.func_code.co_filename, func.func_code.co_firstlineno,
-                            func.__name__, newtok.type),lexdata[lexpos:])
-
-                return newtok
-            else:
-                # No match, see if in literals
-                if lexdata[lexpos] in self.lexliterals:
-                    tok = LexToken()
-                    tok.value = lexdata[lexpos]
-                    tok.lineno = self.lineno
-                    tok.lexer = self
-                    tok.type = tok.value
-                    tok.lexpos = lexpos
-                    self.lexpos = lexpos + 1
-                    return tok
-        
-                # No match. Call t_error() if defined.
-                if self.lexerrorf:
-                    tok = LexToken()
-                    tok.value = self.lexdata[lexpos:]
-                    tok.lineno = self.lineno
-                    tok.type = "error"
-                    tok.lexer = self
-                    tok.lexpos = lexpos
-                    self.lexpos = lexpos
-                    newtok = self.lexerrorf(tok)
-                    if lexpos == self.lexpos:
-                        # Error method didn't change text position at all. This is an error.
-                        raise LexError, ("Scanning error. Illegal character '%s'" % (lexdata[lexpos]), lexdata[lexpos:])
-                    lexpos = self.lexpos
-                    if not newtok: continue
-                    return newtok
-
-                self.lexpos = lexpos
-                raise LexError, ("Illegal character '%s' at index %d" % (lexdata[lexpos],lexpos), lexdata[lexpos:])
-
-        self.lexpos = lexpos + 1
-        if self.lexdata is None:
-             raise RuntimeError, "No input string given with input()"
-        return None
-        
-# -----------------------------------------------------------------------------
-# _validate_file()
-#
-# This checks to see if there are duplicated t_rulename() functions or strings
-# in the parser input file.  This is done using a simple regular expression
-# match on each line in the filename.
-# -----------------------------------------------------------------------------
-
-def _validate_file(filename):
-    import os.path
-    base,ext = os.path.splitext(filename)
-    if ext != '.py': return 1        # No idea what the file is. Return OK
-
-    try:
-        f = open(filename)
-        lines = f.readlines()
-        f.close()
-    except IOError:
-        return 1                       # Oh well
-
-    fre = re.compile(r'\s*def\s+(t_[a-zA-Z_0-9]*)\(')
-    sre = re.compile(r'\s*(t_[a-zA-Z_0-9]*)\s*=')
-    counthash = { }
-    linen = 1
-    noerror = 1
-    for l in lines:
-        m = fre.match(l)
-        if not m:
-            m = sre.match(l)
-        if m:
-            name = m.group(1)
-            prev = counthash.get(name)
-            if not prev:
-                counthash[name] = linen
-            else:
-                print "%s:%d: Rule %s redefined. Previously defined on line %d" % (filename,linen,name,prev)
-                noerror = 0
-        linen += 1
-    return noerror
-
-# -----------------------------------------------------------------------------
-# _funcs_to_names()
-#
-# Given a list of regular expression functions, this converts it to a list
-# suitable for output to a table file
-# -----------------------------------------------------------------------------
-
-def _funcs_to_names(funclist):
-    result = []
-    for f in funclist:
-         if f and f[0]:
-             result.append((f[0].__name__,f[1]))
-         else:
-             result.append(f)
-    return result
-
-# -----------------------------------------------------------------------------
-# _names_to_funcs()
-#
-# Given a list of regular expression function names, this converts it back to
-# functions.
-# -----------------------------------------------------------------------------
-
-def _names_to_funcs(namelist,fdict):
-     result = []
-     for n in namelist:
-          if n and n[0]:
-              result.append((fdict[n[0]],n[1]))
-          else:
-              result.append(n)
-     return result
-
-# -----------------------------------------------------------------------------
-# _form_master_re()
-#
-# This function takes a list of all of the regex components and attempts to
-# form the master regular expression.  Given limitations in the Python re
-# module, it may be necessary to break the master regex into separate expressions.
-# -----------------------------------------------------------------------------
-
-def _form_master_re(relist,reflags,ldict):
-    if not relist: return []
-    regex = "|".join(relist)
-    try:
-        lexre = re.compile(regex,re.VERBOSE | reflags)
-
-        # Build the index to function map for the matching engine
-        lexindexfunc = [ None ] * (max(lexre.groupindex.values())+1)
-        for f,i in lexre.groupindex.items():
-            handle = ldict.get(f,None)
-            if type(handle) in (types.FunctionType, types.MethodType):
-                lexindexfunc[i] = (handle,handle.__name__[2:])
-            elif handle is not None:
-                # If rule was specified as a string, we build an anonymous
-                # callback function to carry out the action
-                if f.find("ignore_") > 0:
-                    lexindexfunc[i] = (None,None)
-                    print "IGNORE", f
-                else:
-                    lexindexfunc[i] = (None, f[2:])
-         
-        return [(lexre,lexindexfunc)],[regex]
-    except Exception,e:
-        m = int(len(relist)/2)
-        if m == 0: m = 1
-        llist, lre = _form_master_re(relist[:m],reflags,ldict)
-        rlist, rre = _form_master_re(relist[m:],reflags,ldict)
-        return llist+rlist, lre+rre
-
-# -----------------------------------------------------------------------------
-# def _statetoken(s,names)
-#
-# Given a declaration name s of the form "t_" and a dictionary whose keys are
-# state names, this function returns a tuple (states,tokenname) where states
-# is a tuple of state names and tokenname is the name of the token.  For example,
-# calling this with s = "t_foo_bar_SPAM" might return (('foo','bar'),'SPAM')
-# -----------------------------------------------------------------------------
-
-def _statetoken(s,names):
-    nonstate = 1
-    parts = s.split("_")
-    for i in range(1,len(parts)):
-         if not names.has_key(parts[i]) and parts[i] != 'ANY': break
-    if i > 1:
-       states = tuple(parts[1:i])
-    else:
-       states = ('INITIAL',)
-
-    if 'ANY' in states:
-       states = tuple(names.keys())
-      
-    tokenname = "_".join(parts[i:])
-    return (states,tokenname)
-
-# -----------------------------------------------------------------------------
-# lex(module)
-#
-# Build all of the regular expression rules from definitions in the supplied module
-# -----------------------------------------------------------------------------
-def lex(module=None,object=None,debug=0,optimize=0,lextab="lextab",reflags=0,nowarn=0):
-    global lexer
-    ldict = None
-    stateinfo  = { 'INITIAL' : 'inclusive'}
-    error = 0
-    files = { }
-    lexobj = Lexer()
-    lexobj.lexdebug = debug
-    lexobj.lexoptimize = optimize
-    global token,input
-
-    if nowarn: warn = 0
-    else: warn = 1
-    
-    if object: module = object
-
-    if module:
-        # User supplied a module object.
-        if isinstance(module, types.ModuleType):
-            ldict = module.__dict__
-        elif isinstance(module, _INSTANCETYPE):
-            _items = [(k,getattr(module,k)) for k in dir(module)]
-            ldict = { }
-            for (i,v) in _items:
-                ldict[i] = v
-        else:
-            raise ValueError,"Expected a module or instance"
-        lexobj.lexmodule = module
-        
-    else:
-        # No module given.  We might be able to get information from the caller.
-        try:
-            raise RuntimeError
-        except RuntimeError:
-            e,b,t = sys.exc_info()
-            f = t.tb_frame
-            f = f.f_back           # Walk out to our calling function
-            ldict = f.f_globals    # Grab its globals dictionary
-
-    if optimize and lextab:
-        try:
-            lexobj.readtab(lextab,ldict)
-            token = lexobj.token
-            input = lexobj.input
-            lexer = lexobj
-            return lexobj
-        
-        except ImportError:
-            pass
-        
-    # Get the tokens, states, and literals variables (if any)
-    if (module and isinstance(module,_INSTANCETYPE)):
-        tokens   = getattr(module,"tokens",None)
-        states   = getattr(module,"states",None)
-        literals = getattr(module,"literals","")
-    else:
-        tokens   = ldict.get("tokens",None)
-        states   = ldict.get("states",None)
-        literals = ldict.get("literals","")
-        
-    if not tokens:
-        raise SyntaxError,"lex: module does not define 'tokens'"
-    if not (isinstance(tokens,types.ListType) or isinstance(tokens,types.TupleType)):
-        raise SyntaxError,"lex: tokens must be a list or tuple."
-
-    # Build a dictionary of valid token names
-    lexobj.lextokens = { }
-    if not optimize:
-        for n in tokens:
-            if not _is_identifier.match(n):
-                print "lex: Bad token name '%s'" % n
-                error = 1
-            if warn and lexobj.lextokens.has_key(n):
-                print "lex: Warning. Token '%s' multiply defined." % n
-            lexobj.lextokens[n] = None
-    else:
-        for n in tokens: lexobj.lextokens[n] = None
-
-    if debug:
-        print "lex: tokens = '%s'" % lexobj.lextokens.keys()
-
-    try:
-         for c in literals:
-               if not (isinstance(c,types.StringType) or isinstance(c,types.UnicodeType)) or len(c) > 1:
-                    print "lex: Invalid literal %s. Must be a single character" % repr(c)
-                    error = 1
-                    continue
-
-    except TypeError:
-         print "lex: Invalid literals specification. literals must be a sequence of characters."
-         error = 1
-
-    lexobj.lexliterals = literals
-
-    # Build statemap
-    if states:
-         if not (isinstance(states,types.TupleType) or isinstance(states,types.ListType)):
-              print "lex: states must be defined as a tuple or list."
-              error = 1
-         else:
-              for s in states:
-                    if not isinstance(s,types.TupleType) or len(s) != 2:
-                           print "lex: invalid state specifier %s. Must be a tuple (statename,'exclusive|inclusive')" % repr(s)
-                           error = 1
-                           continue
-                    name, statetype = s
-                    if not isinstance(name,types.StringType):
-                           print "lex: state name %s must be a string" % repr(name)
-                           error = 1
-                           continue
-                    if not (statetype == 'inclusive' or statetype == 'exclusive'):
-                           print "lex: state type for state %s must be 'inclusive' or 'exclusive'" % name
-                           error = 1
-                           continue
-                    if stateinfo.has_key(name):
-                           print "lex: state '%s' already defined." % name
-                           error = 1
-                           continue
-                    stateinfo[name] = statetype
-
-    # Get a list of symbols with the t_ or s_ prefix
-    tsymbols = [f for f in ldict.keys() if f[:2] == 't_' ]
-
-    # Now build up a list of functions and a list of strings
-
-    funcsym =  { }        # Symbols defined as functions
-    strsym =   { }        # Symbols defined as strings
-    toknames = { }        # Mapping of symbols to token names
-
-    for s in stateinfo.keys():
-         funcsym[s] = []
-         strsym[s] = []
-
-    ignore   = { }        # Ignore strings by state
-    errorf   = { }        # Error functions by state
-
-    if len(tsymbols) == 0:
-        raise SyntaxError,"lex: no rules of the form t_rulename are defined."
-
-    for f in tsymbols:
-        t = ldict[f]
-        states, tokname = _statetoken(f,stateinfo)
-        toknames[f] = tokname
-
-        if callable(t):
-            for s in states: funcsym[s].append((f,t))
-        elif (isinstance(t, types.StringType) or isinstance(t,types.UnicodeType)):
-            for s in states: strsym[s].append((f,t))
-        else:
-            print "lex: %s not defined as a function or string" % f
-            error = 1
-
-    # Sort the functions by line number
-    for f in funcsym.values():
-        f.sort(lambda x,y: cmp(x[1].func_code.co_firstlineno,y[1].func_code.co_firstlineno))
-
-    # Sort the strings by regular expression length
-    for s in strsym.values():
-        s.sort(lambda x,y: (len(x[1]) < len(y[1])) - (len(x[1]) > len(y[1])))
-
-    regexs = { }
-
-    # Build the master regular expressions
-    for state in stateinfo.keys():
-        regex_list = []
-
-        # Add rules defined by functions first
-        for fname, f in funcsym[state]:
-            line = f.func_code.co_firstlineno
-            file = f.func_code.co_filename
-            files[file] = None
-            tokname = toknames[fname]
-
-            ismethod = isinstance(f, types.MethodType)
-
-            if not optimize:
-                nargs = f.func_code.co_argcount
-                if ismethod:
-                    reqargs = 2
-                else:
-                    reqargs = 1
-                if nargs > reqargs:
-                    print "%s:%d: Rule '%s' has too many arguments." % (file,line,f.__name__)
-                    error = 1
-                    continue
-
-                if nargs < reqargs:
-                    print "%s:%d: Rule '%s' requires an argument." % (file,line,f.__name__)
-                    error = 1
-                    continue
-
-                if tokname == 'ignore':
-                    print "%s:%d: Rule '%s' must be defined as a string." % (file,line,f.__name__)
-                    error = 1
-                    continue
-        
-            if tokname == 'error':
-                errorf[state] = f
-                continue
-
-            if f.__doc__:
-                if not optimize:
-                    try:
-                        c = re.compile("(?P<%s>%s)" % (f.__name__,f.__doc__), re.VERBOSE | reflags)
-                        if c.match(""):
-                             print "%s:%d: Regular expression for rule '%s' matches empty string." % (file,line,f.__name__)
-                             error = 1
-                             continue
-                    except re.error,e:
-                        print "%s:%d: Invalid regular expression for rule '%s'. %s" % (file,line,f.__name__,e)
-                        if '#' in f.__doc__:
-                             print "%s:%d. Make sure '#' in rule '%s' is escaped with '\\#'." % (file,line, f.__name__)                 
-                        error = 1
-                        continue
-
-                    if debug:
-                        print "lex: Adding rule %s -> '%s' (state '%s')" % (f.__name__,f.__doc__, state)
-
-                # Okay. The regular expression seemed okay.  Let's append it to the master regular
-                # expression we're building
-  
-                regex_list.append("(?P<%s>%s)" % (f.__name__,f.__doc__))
-            else:
-                print "%s:%d: No regular expression defined for rule '%s'" % (file,line,f.__name__)
-
-        # Now add all of the simple rules
-        for name,r in strsym[state]:
-            tokname = toknames[name]       
-
-            if tokname == 'ignore':
-                 ignore[state] = r
-                 continue
-
-            if not optimize:
-                if tokname == 'error':
-                    raise SyntaxError,"lex: Rule '%s' must be defined as a function" % name
-                    error = 1
-                    continue
-        
-                if not lexobj.lextokens.has_key(tokname) and tokname.find("ignore_") < 0:
-                    print "lex: Rule '%s' defined for an unspecified token %s." % (name,tokname)
-                    error = 1
-                    continue
-                try:
-                    c = re.compile("(?P<%s>%s)" % (name,r),re.VERBOSE | reflags)
-                    if (c.match("")):
-                         print "lex: Regular expression for rule '%s' matches empty string." % name
-                         error = 1
-                         continue
-                except re.error,e:
-                    print "lex: Invalid regular expression for rule '%s'. %s" % (name,e)
-                    if '#' in r:
-                         print "lex: Make sure '#' in rule '%s' is escaped with '\\#'." % name
-
-                    error = 1
-                    continue
-                if debug:
-                    print "lex: Adding rule %s -> '%s' (state '%s')" % (name,r,state)
-                
-            regex_list.append("(?P<%s>%s)" % (name,r))
-
-        if not regex_list:
-             print "lex: No rules defined for state '%s'" % state
-             error = 1
-
-        regexs[state] = regex_list
-
-
-    if not optimize:
-        for f in files.keys(): 
-           if not _validate_file(f):
-                error = 1
-
-    if error:
-        raise SyntaxError,"lex: Unable to build lexer."
-
-    # From this point forward, we're reasonably confident that we can build the lexer.
-    # No more errors will be generated, but there might be some warning messages.
-
-    # Build the master regular expressions
-
-    for state in regexs.keys():
-        lexre, re_text = _form_master_re(regexs[state],reflags,ldict)
-        lexobj.lexstatere[state] = lexre
-        lexobj.lexstateretext[state] = re_text
-        if debug:
-            for i in range(len(re_text)):
-                 print "lex: state '%s'. regex[%d] = '%s'" % (state, i, re_text[i])
-
-    # For inclusive states, we need to add the INITIAL state
-    for state,type in stateinfo.items():
-        if state != "INITIAL" and type == 'inclusive':
-             lexobj.lexstatere[state].extend(lexobj.lexstatere['INITIAL'])
-             lexobj.lexstateretext[state].extend(lexobj.lexstateretext['INITIAL'])
-
-    lexobj.lexstateinfo = stateinfo
-    lexobj.lexre = lexobj.lexstatere["INITIAL"]
-    lexobj.lexretext = lexobj.lexstateretext["INITIAL"]
-
-    # Set up ignore variables
-    lexobj.lexstateignore = ignore
-    lexobj.lexignore = lexobj.lexstateignore.get("INITIAL","")
-
-    # Set up error functions
-    lexobj.lexstateerrorf = errorf
-    lexobj.lexerrorf = errorf.get("INITIAL",None)
-    if warn and not lexobj.lexerrorf:
-        print "lex: Warning. no t_error rule is defined."
-
-    # Check state information for ignore and error rules
-    for s,stype in stateinfo.items():
-        if stype == 'exclusive':
-              if warn and not errorf.has_key(s):
-                   print "lex: Warning. no error rule is defined for exclusive state '%s'" % s
-              if warn and not ignore.has_key(s) and lexobj.lexignore:
-                   print "lex: Warning. no ignore rule is defined for exclusive state '%s'" % s
-        elif stype == 'inclusive':
-              if not errorf.has_key(s):
-                   errorf[s] = errorf.get("INITIAL",None)
-              if not ignore.has_key(s):
-                   ignore[s] = ignore.get("INITIAL","")
-   
-
-    # Create global versions of the token() and input() functions
-    token = lexobj.token
-    input = lexobj.input
-    lexer = lexobj
-
-    # If in optimize mode, we write the lextab   
-    if lextab and optimize:
-        lexobj.writetab(lextab)
-
-    return lexobj
-
-# -----------------------------------------------------------------------------
-# runmain()
-#
-# This runs the lexer as a main program
-# -----------------------------------------------------------------------------
-
-def runmain(lexer=None,data=None):
-    if not data:
-        try:
-            filename = sys.argv[1]
-            f = open(filename)
-            data = f.read()
-            f.close()
-        except IndexError:
-            print "Reading from standard input (type EOF to end):"
-            data = sys.stdin.read()
-
-    if lexer:
-        _input = lexer.input
-    else:
-        _input = input
-    _input(data)
-    if lexer:
-        _token = lexer.token
-    else:
-        _token = token
-        
-    while 1:
-        tok = _token()
-        if not tok: break
-        print "(%s,%r,%d,%d)" % (tok.type, tok.value, tok.lineno,tok.lexpos)
-        
-
-# -----------------------------------------------------------------------------
-# @TOKEN(regex)
-#
-# This decorator function can be used to set the regex expression on a function
-# when its docstring might need to be set in an alternative way
-# -----------------------------------------------------------------------------
-
-def TOKEN(r):
-    def set_doc(f):
-        f.__doc__ = r
-        return f
-    return set_doc
-
-# Alternative spelling of the TOKEN decorator
-Token = TOKEN
-
diff --git a/chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/yacc.py b/chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/yacc.py
deleted file mode 100644
index caf98af..0000000
--- a/chall/ply-2.2/build/lib.linux-x86_64-2.7/ply/yacc.py
+++ /dev/null
@@ -1,2209 +0,0 @@
-#-----------------------------------------------------------------------------
-# ply: yacc.py
-#
-# Author(s): David M. Beazley (dave@dabeaz.com)
-#
-# Copyright (C) 2001-2006, David M. Beazley
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public
-# License as published by the Free Software Foundation; either
-# version 2.1 of the License, or (at your option) any later version.
-# 
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Lesser General Public License for more details.
-# 
-# You should have received a copy of the GNU Lesser General Public
-# License along with this library; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-# 
-# See the file COPYING for a complete copy of the LGPL.
-#
-#
-# This implements an LR parser that is constructed from grammar rules defined
-# as Python functions. The grammer is specified by supplying the BNF inside
-# Python documentation strings.  The inspiration for this technique was borrowed
-# from John Aycock's Spark parsing system.  PLY might be viewed as cross between
-# Spark and the GNU bison utility.
-#
-# The current implementation is only somewhat object-oriented. The
-# LR parser itself is defined in terms of an object (which allows multiple
-# parsers to co-exist).  However, most of the variables used during table
-# construction are defined in terms of global variables.  Users shouldn't
-# notice unless they are trying to define multiple parsers at the same
-# time using threads (in which case they should have their head examined).
-#
-# This implementation supports both SLR and LALR(1) parsing.  LALR(1)
-# support was originally implemented by Elias Ioup (ezioup@alumni.uchicago.edu),
-# using the algorithm found in Aho, Sethi, and Ullman "Compilers: Principles,
-# Techniques, and Tools" (The Dragon Book).  LALR(1) has since been replaced
-# by the more efficient DeRemer and Pennello algorithm.
-#
-# :::::::: WARNING :::::::
-#
-# Construction of LR parsing tables is fairly complicated and expensive.
-# To make this module run fast, a *LOT* of work has been put into
-# optimization---often at the expensive of readability and what might
-# consider to be good Python "coding style."   Modify the code at your
-# own risk!
-# ----------------------------------------------------------------------------
-
-__version__ = "2.2"
-
-#-----------------------------------------------------------------------------
-#                     === User configurable parameters ===
-#
-# Change these to modify the default behavior of yacc (if you wish)
-#-----------------------------------------------------------------------------
-
-yaccdebug   = 1                # Debugging mode.  If set, yacc generates a
-                               # a 'parser.out' file in the current directory
-
-debug_file  = 'parser.out'     # Default name of the debugging file
-tab_module  = 'parsetab'       # Default name of the table module
-default_lr  = 'LALR'           # Default LR table generation method
-
-error_count = 3                # Number of symbols that must be shifted to leave recovery mode
-
-import re, types, sys, cStringIO, md5, os.path
-
-# Exception raised for yacc-related errors
-class YaccError(Exception):   pass
-
-#-----------------------------------------------------------------------------
-#                        ===  LR Parsing Engine ===
-#
-# The following classes are used for the LR parser itself.  These are not
-# used during table construction and are independent of the actual LR
-# table generation algorithm
-#-----------------------------------------------------------------------------
-
-# This class is used to hold non-terminal grammar symbols during parsing.
-# It normally has the following attributes set:
-#        .type       = Grammar symbol type
-#        .value      = Symbol value
-#        .lineno     = Starting line number
-#        .endlineno  = Ending line number (optional, set automatically)
-#        .lexpos     = Starting lex position
-#        .endlexpos  = Ending lex position (optional, set automatically)
-
-class YaccSymbol:
-    def __str__(self):    return self.type
-    def __repr__(self):   return str(self)
-
-# This class is a wrapper around the objects actually passed to each
-# grammar rule.   Index lookup and assignment actually assign the
-# .value attribute of the underlying YaccSymbol object.
-# The lineno() method returns the line number of a given
-# item (or 0 if not defined).   The linespan() method returns
-# a tuple of (startline,endline) representing the range of lines
-# for a symbol.  The lexspan() method returns a tuple (lexpos,endlexpos)
-# representing the range of positional information for a symbol.
-
-class YaccProduction:
-    def __init__(self,s,stack=None):
-        self.slice = s
-        self.pbstack = []
-        self.stack = stack
-
-    def __getitem__(self,n):
-        if type(n) == types.IntType:
-             if n >= 0: return self.slice[n].value
-             else: return self.stack[n].value
-        else:
-             return [s.value for s in self.slice[n.start:n.stop:n.step]]
-
-    def __setitem__(self,n,v):
-        self.slice[n].value = v
-
-    def __len__(self):
-        return len(self.slice)
-    
-    def lineno(self,n):
-        return getattr(self.slice[n],"lineno",0)
-
-    def linespan(self,n):
-        startline = getattr(self.slice[n],"lineno",0)
-        endline = getattr(self.slice[n],"endlineno",startline)
-        return startline,endline
-
-    def lexpos(self,n):
-        return getattr(self.slice[n],"lexpos",0)
-
-    def lexspan(self,n):
-        startpos = getattr(self.slice[n],"lexpos",0)
-        endpos = getattr(self.slice[n],"endlexpos",startpos)
-        return startpos,endpos
-
-    def pushback(self,n):
-        if n <= 0:
-            raise ValueError, "Expected a positive value"
-        if n > (len(self.slice)-1):
-            raise ValueError, "Can't push %d tokens. Only %d are available." % (n,len(self.slice)-1)
-        for i in range(0,n):
-            self.pbstack.append(self.slice[-i-1])
-
-# The LR Parsing engine.   This is defined as a class so that multiple parsers
-# can exist in the same process.  A user never instantiates this directly.
-# Instead, the global yacc() function should be used to create a suitable Parser
-# object. 
-
-class Parser:
-    def __init__(self,magic=None):
-
-        # This is a hack to keep users from trying to instantiate a Parser
-        # object directly.
-
-        if magic != "xyzzy":
-            raise YaccError, "Can't instantiate Parser. Use yacc() instead."
-
-        # Reset internal state
-        self.productions = None          # List of productions
-        self.errorfunc   = None          # Error handling function
-        self.action      = { }           # LR Action table
-        self.goto        = { }           # LR goto table
-        self.require     = { }           # Attribute require table
-        self.method      = "Unknown LR"  # Table construction method used
-
-    def errok(self):
-        self.errorcount = 0
-
-    def restart(self):
-        del self.statestack[:]
-        del self.symstack[:]
-        sym = YaccSymbol()
-        sym.type = '$end'
-        self.symstack.append(sym)
-        self.statestack.append(0)
-        
-    def parse(self,input=None,lexer=None,debug=0):
-        lookahead = None                 # Current lookahead symbol
-        lookaheadstack = [ ]             # Stack of lookahead symbols
-        actions = self.action            # Local reference to action table
-        goto    = self.goto              # Local reference to goto table
-        prod    = self.productions       # Local reference to production list
-        pslice  = YaccProduction(None)   # Production object passed to grammar rules
-        pslice.parser = self             # Parser object
-        self.errorcount = 0              # Used during error recovery
-
-        # If no lexer was given, we will try to use the lex module
-        if not lexer:
-            import lex
-            lexer = lex.lexer
-
-        pslice.lexer = lexer
-        
-        # If input was supplied, pass to lexer
-        if input:
-            lexer.input(input)
-
-        # Tokenize function
-        get_token = lexer.token
-
-        statestack = [ ]                # Stack of parsing states
-        self.statestack = statestack
-        symstack   = [ ]                # Stack of grammar symbols
-        self.symstack = symstack
-
-        pslice.stack = symstack         # Put in the production
-        errtoken   = None               # Err token
-
-        # The start state is assumed to be (0,$end)
-        statestack.append(0)
-        sym = YaccSymbol()
-        sym.type = '$end'
-        symstack.append(sym)
-        
-        while 1:
-            # Get the next symbol on the input.  If a lookahead symbol
-            # is already set, we just use that. Otherwise, we'll pull
-            # the next token off of the lookaheadstack or from the lexer
-            if debug > 1:
-                print 'state', statestack[-1]
-            if not lookahead:
-                if not lookaheadstack:
-                    lookahead = get_token()     # Get the next token
-                else:
-                    lookahead = lookaheadstack.pop()
-                if not lookahead:
-                    lookahead = YaccSymbol()
-                    lookahead.type = '$end'
-            if debug:
-                errorlead = ("%s . %s" % (" ".join([xx.type for xx in symstack][1:]), str(lookahead))).lstrip()
-
-            # Check the action table
-            s = statestack[-1]
-            ltype = lookahead.type
-            t = actions.get((s,ltype),None)
-
-            if debug > 1:
-                print 'action', t
-            if t is not None:
-                if t > 0:
-                    # shift a symbol on the stack
-                    if ltype == '$end':
-                        # Error, end of input
-                        sys.stderr.write("yacc: Parse error. EOF\n")
-                        return
-                    statestack.append(t)
-                    if debug > 1:
-                        sys.stderr.write("%-60s shift state %s\n" % (errorlead, t))
-                    symstack.append(lookahead)
-                    lookahead = None
-
-                    # Decrease error count on successful shift
-                    if self.errorcount > 0:
-                        self.errorcount -= 1
-                        
-                    continue
-                
-                if t < 0:
-                    # reduce a symbol on the stack, emit a production
-                    p = prod[-t]
-                    pname = p.name
-                    plen  = p.len
-
-                    # Get production function
-                    sym = YaccSymbol()
-                    sym.type = pname       # Production name
-                    sym.value = None
-                    if debug > 1:
-                        sys.stderr.write("%-60s reduce %d\n" % (errorlead, -t))
-
-                    if plen:
-                        targ = symstack[-plen-1:]
-                        targ[0] = sym
-                        try:
-                            sym.lineno = targ[1].lineno
-                            sym.endlineno = getattr(targ[-1],"endlineno",targ[-1].lineno)
-                            sym.lexpos = targ[1].lexpos
-                            sym.endlexpos = getattr(targ[-1],"endlexpos",targ[-1].lexpos)
-                        except AttributeError:
-                            sym.lineno = 0
-                        del symstack[-plen:]
-                        del statestack[-plen:]
-                    else:
-                        sym.lineno = 0
-                        targ = [ sym ]
-                    pslice.slice = targ
-                    pslice.pbstack = []
-                    # Call the grammar rule with our special slice object
-                    p.func(pslice)
-
-                    # If there was a pushback, put that on the stack
-                    if pslice.pbstack:
-                        lookaheadstack.append(lookahead)
-                        for _t in pslice.pbstack:
-                            lookaheadstack.append(_t)
-                        lookahead = None
-
-                    symstack.append(sym)
-                    statestack.append(goto[statestack[-1],pname])
-                    continue
-
-                if t == 0:
-                    n = symstack[-1]
-                    return getattr(n,"value",None)
-                    sys.stderr.write(errorlead, "\n")
-
-            if t == None:
-                if debug:
-                    sys.stderr.write(errorlead + "\n")
-                # We have some kind of parsing error here.  To handle
-                # this, we are going to push the current token onto
-                # the tokenstack and replace it with an 'error' token.
-                # If there are any synchronization rules, they may
-                # catch it.
-                #
-                # In addition to pushing the error token, we call call
-                # the user defined p_error() function if this is the
-                # first syntax error.  This function is only called if
-                # errorcount == 0.
-                if not self.errorcount:
-                    self.errorcount = error_count
-                    errtoken = lookahead
-                    if errtoken.type == '$end':
-                        errtoken = None               # End of file!
-                    if self.errorfunc:
-                        global errok,token,restart
-                        errok = self.errok        # Set some special functions available in error recovery
-                        token = get_token
-                        restart = self.restart
-                        tok = self.errorfunc(errtoken)
-                        del errok, token, restart   # Delete special functions
-                        
-                        if not self.errorcount:
-                            # User must have done some kind of panic
-                            # mode recovery on their own.  The
-                            # returned token is the next lookahead
-                            lookahead = tok
-                            errtoken = None
-                            continue
-                    else:
-                        if errtoken:
-                            if hasattr(errtoken,"lineno"): lineno = lookahead.lineno
-                            else: lineno = 0
-                            if lineno:
-                                sys.stderr.write("yacc: Syntax error at line %d, token=%s\n" % (lineno, errtoken.type))
-                            else:
-                                sys.stderr.write("yacc: Syntax error, token=%s" % errtoken.type)
-                        else:
-                            sys.stderr.write("yacc: Parse error in input. EOF\n")
-                            return
-
-                else:
-                    self.errorcount = error_count
-                
-                # case 1:  the statestack only has 1 entry on it.  If we're in this state, the
-                # entire parse has been rolled back and we're completely hosed.   The token is
-                # discarded and we just keep going.
-
-                if len(statestack) <= 1 and lookahead.type != '$end':
-                    lookahead = None
-                    errtoken = None
-                    # Nuke the pushback stack
-                    del lookaheadstack[:]
-                    continue
-
-                # case 2: the statestack has a couple of entries on it, but we're
-                # at the end of the file. nuke the top entry and generate an error token
-
-                # Start nuking entries on the stack
-                if lookahead.type == '$end':
-                    # Whoa. We're really hosed here. Bail out
-                    return 
-
-                if lookahead.type != 'error':
-                    sym = symstack[-1]
-                    if sym.type == 'error':
-                        # Hmmm. Error is on top of stack, we'll just nuke input
-                        # symbol and continue
-                        lookahead = None
-                        continue
-                    t = YaccSymbol()
-                    t.type = 'error'
-                    if hasattr(lookahead,"lineno"):
-                        t.lineno = lookahead.lineno
-                    t.value = lookahead
-                    lookaheadstack.append(lookahead)
-                    lookahead = t
-                else:
-                    symstack.pop()
-                    statestack.pop()
-
-                continue
-
-            # Call an error function here
-            raise RuntimeError, "yacc: internal parser error!!!\n"
-
-# -----------------------------------------------------------------------------
-#                          === Parser Construction ===
-#
-# The following functions and variables are used to implement the yacc() function
-# itself.   This is pretty hairy stuff involving lots of error checking,
-# construction of LR items, kernels, and so forth.   Although a lot of
-# this work is done using global variables, the resulting Parser object
-# is completely self contained--meaning that it is safe to repeatedly
-# call yacc() with different grammars in the same application.
-# -----------------------------------------------------------------------------
-        
-# -----------------------------------------------------------------------------
-# validate_file()
-#
-# This function checks to see if there are duplicated p_rulename() functions
-# in the parser module file.  Without this function, it is really easy for
-# users to make mistakes by cutting and pasting code fragments (and it's a real
-# bugger to try and figure out why the resulting parser doesn't work).  Therefore,
-# we just do a little regular expression pattern matching of def statements
-# to try and detect duplicates.
-# -----------------------------------------------------------------------------
-
-def validate_file(filename):
-    base,ext = os.path.splitext(filename)
-    if ext != '.py': return 1          # No idea. Assume it's okay.
-
-    try:
-        f = open(filename)
-        lines = f.readlines()
-        f.close()
-    except IOError:
-        return 1                       # Oh well
-
-    # Match def p_funcname(
-    fre = re.compile(r'\s*def\s+(p_[a-zA-Z_0-9]*)\(')
-    counthash = { }
-    linen = 1
-    noerror = 1
-    for l in lines:
-        m = fre.match(l)
-        if m:
-            name = m.group(1)
-            prev = counthash.get(name)
-            if not prev:
-                counthash[name] = linen
-            else:
-                sys.stderr.write("%s:%d: Function %s redefined. Previously defined on line %d\n" % (filename,linen,name,prev))
-                noerror = 0
-        linen += 1
-    return noerror
-
-# This function looks for functions that might be grammar rules, but which don't have the proper p_suffix.
-def validate_dict(d):
-    for n,v in d.items(): 
-        if n[0:2] == 'p_' and type(v) in (types.FunctionType, types.MethodType): continue
-        if n[0:2] == 't_': continue
-
-        if n[0:2] == 'p_':
-            sys.stderr.write("yacc: Warning. '%s' not defined as a function\n" % n)
-        if 1 and isinstance(v,types.FunctionType) and v.func_code.co_argcount == 1:
-            try:
-                doc = v.__doc__.split(" ")
-                if doc[1] == ':':
-                    sys.stderr.write("%s:%d: Warning. Possible grammar rule '%s' defined without p_ prefix.\n" % (v.func_code.co_filename, v.func_code.co_firstlineno,n))
-            except StandardError:
-                pass
-
-# -----------------------------------------------------------------------------
-#                           === GRAMMAR FUNCTIONS ===
-#
-# The following global variables and functions are used to store, manipulate,
-# and verify the grammar rules specified by the user.
-# -----------------------------------------------------------------------------
-
-# Initialize all of the global variables used during grammar construction
-def initialize_vars():
-    global Productions, Prodnames, Prodmap, Terminals 
-    global Nonterminals, First, Follow, Precedence, LRitems
-    global Errorfunc, Signature, Requires
-
-    Productions  = [None]  # A list of all of the productions.  The first
-                           # entry is always reserved for the purpose of
-                           # building an augmented grammar
-                        
-    Prodnames    = { }     # A dictionary mapping the names of nonterminals to a list of all
-                           # productions of that nonterminal.
-                        
-    Prodmap      = { }     # A dictionary that is only used to detect duplicate
-                           # productions.
-
-    Terminals    = { }     # A dictionary mapping the names of terminal symbols to a
-                           # list of the rules where they are used.
-
-    Nonterminals = { }     # A dictionary mapping names of nonterminals to a list
-                           # of rule numbers where they are used.
-
-    First        = { }     # A dictionary of precomputed FIRST(x) symbols
-    
-    Follow       = { }     # A dictionary of precomputed FOLLOW(x) symbols
-
-    Precedence   = { }     # Precedence rules for each terminal. Contains tuples of the
-                           # form ('right',level) or ('nonassoc', level) or ('left',level)
-
-    LRitems      = [ ]     # A list of all LR items for the grammar.  These are the
-                           # productions with the "dot" like E -> E . PLUS E
-
-    Errorfunc    = None    # User defined error handler
-
-    Signature    = md5.new()   # Digital signature of the grammar rules, precedence
-                               # and other information.  Used to determined when a
-                               # parsing table needs to be regenerated.
-
-    Requires     = { }     # Requires list
-
-    # File objects used when creating the parser.out debugging file
-    global _vf, _vfc
-    _vf           = cStringIO.StringIO()
-    _vfc          = cStringIO.StringIO()
-
-# -----------------------------------------------------------------------------
-# class Production:
-#
-# This class stores the raw information about a single production or grammar rule.
-# It has a few required attributes:
-#
-#       name     - Name of the production (nonterminal)
-#       prod     - A list of symbols making up its production
-#       number   - Production number.
-#
-# In addition, a few additional attributes are used to help with debugging or
-# optimization of table generation.
-#
-#       file     - File where production action is defined.
-#       lineno   - Line number where action is defined
-#       func     - Action function
-#       prec     - Precedence level
-#       lr_next  - Next LR item. Example, if we are ' E -> E . PLUS E'
-#                  then lr_next refers to 'E -> E PLUS . E'   
-#       lr_index - LR item index (location of the ".") in the prod list.
-#       lookaheads - LALR lookahead symbols for this item
-#       len      - Length of the production (number of symbols on right hand side)
-# -----------------------------------------------------------------------------
-
-class Production:
-    def __init__(self,**kw):
-        for k,v in kw.items():
-            setattr(self,k,v)
-        self.lr_index = -1
-        self.lr0_added = 0    # Flag indicating whether or not added to LR0 closure
-        self.lr1_added = 0    # Flag indicating whether or not added to LR1
-        self.usyms = [ ]
-        self.lookaheads = { }
-        self.lk_added = { }
-        self.setnumbers = [ ]
-        
-    def __str__(self):
-        if self.prod:
-            s = "%s -> %s" % (self.name," ".join(self.prod))
-        else:
-            s = "%s -> <empty>" % self.name
-        return s
-
-    def __repr__(self):
-        return str(self)
-
-    # Compute lr_items from the production
-    def lr_item(self,n):
-        if n > len(self.prod): return None
-        p = Production()
-        p.name = self.name
-        p.prod = list(self.prod)
-        p.number = self.number
-        p.lr_index = n
-        p.lookaheads = { }
-        p.setnumbers = self.setnumbers
-        p.prod.insert(n,".")
-        p.prod = tuple(p.prod)
-        p.len = len(p.prod)
-        p.usyms = self.usyms
-
-        # Precompute list of productions immediately following
-        try:
-            p.lrafter = Prodnames[p.prod[n+1]]
-        except (IndexError,KeyError),e:
-            p.lrafter = []
-        try:
-            p.lrbefore = p.prod[n-1]
-        except IndexError:
-            p.lrbefore = None
-
-        return p
-
-class MiniProduction:
-    pass
-
-# regex matching identifiers
-_is_identifier = re.compile(r'^[a-zA-Z0-9_-]+$')
-
-# -----------------------------------------------------------------------------
-# add_production()
-#
-# Given an action function, this function assembles a production rule.
-# The production rule is assumed to be found in the function's docstring.
-# This rule has the general syntax:
-#
-#              name1 ::= production1
-#                     |  production2
-#                     |  production3
-#                    ...
-#                     |  productionn
-#              name2 ::= production1
-#                     |  production2
-#                    ... 
-# -----------------------------------------------------------------------------
-
-def add_production(f,file,line,prodname,syms):
-    
-    if Terminals.has_key(prodname):
-        sys.stderr.write("%s:%d: Illegal rule name '%s'. Already defined as a token.\n" % (file,line,prodname))
-        return -1
-    if prodname == 'error':
-        sys.stderr.write("%s:%d: Illegal rule name '%s'. error is a reserved word.\n" % (file,line,prodname))
-        return -1
-                
-    if not _is_identifier.match(prodname):
-        sys.stderr.write("%s:%d: Illegal rule name '%s'\n" % (file,line,prodname))
-        return -1
-
-    for x in range(len(syms)):
-        s = syms[x]
-        if s[0] in "'\"":
-             try:
-                 c = eval(s)
-                 if (len(c) > 1):
-                      sys.stderr.write("%s:%d: Literal token %s in rule '%s' may only be a single character\n" % (file,line,s, prodname)) 
-                      return -1
-                 if not Terminals.has_key(c):
-                      Terminals[c] = []
-                 syms[x] = c
-                 continue
-             except SyntaxError:
-                 pass
-        if not _is_identifier.match(s) and s != '%prec':
-            sys.stderr.write("%s:%d: Illegal name '%s' in rule '%s'\n" % (file,line,s, prodname))
-            return -1
-
-    # See if the rule is already in the rulemap
-    map = "%s -> %s" % (prodname,syms)
-    if Prodmap.has_key(map):
-        m = Prodmap[map]
-        sys.stderr.write("%s:%d: Duplicate rule %s.\n" % (file,line, m))
-        sys.stderr.write("%s:%d: Previous definition at %s:%d\n" % (file,line, m.file, m.line))
-        return -1
-
-    p = Production()
-    p.name = prodname
-    p.prod = syms
-    p.file = file
-    p.line = line
-    p.func = f
-    p.number = len(Productions)
-
-            
-    Productions.append(p)
-    Prodmap[map] = p
-    if not Nonterminals.has_key(prodname):
-        Nonterminals[prodname] = [ ]
-    
-    # Add all terminals to Terminals
-    i = 0
-    while i < len(p.prod):
-        t = p.prod[i]
-        if t == '%prec':
-            try:
-                precname = p.prod[i+1]
-            except IndexError:
-                sys.stderr.write("%s:%d: Syntax error. Nothing follows %%prec.\n" % (p.file,p.line))
-                return -1
-
-            prec = Precedence.get(precname,None)
-            if not prec:
-                sys.stderr.write("%s:%d: Nothing known about the precedence of '%s'\n" % (p.file,p.line,precname))
-                return -1
-            else:
-                p.prec = prec
-            del p.prod[i]
-            del p.prod[i]
-            continue
-
-        if Terminals.has_key(t):
-            Terminals[t].append(p.number)
-            # Is a terminal.  We'll assign a precedence to p based on this
-            if not hasattr(p,"prec"):
-                p.prec = Precedence.get(t,('right',0))
-        else:
-            if not Nonterminals.has_key(t):
-                Nonterminals[t] = [ ]
-            Nonterminals[t].append(p.number)
-        i += 1
-
-    if not hasattr(p,"prec"):
-        p.prec = ('right',0)
-        
-    # Set final length of productions
-    p.len  = len(p.prod)
-    p.prod = tuple(p.prod)
-
-    # Calculate unique syms in the production
-    p.usyms = [ ]
-    for s in p.prod:
-        if s not in p.usyms:
-            p.usyms.append(s)
-    
-    # Add to the global productions list
-    try:
-        Prodnames[p.name].append(p)
-    except KeyError:
-        Prodnames[p.name] = [ p ]
-    return 0
-
-# Given a raw rule function, this function rips out its doc string
-# and adds rules to the grammar
-
-def add_function(f):
-    line = f.func_code.co_firstlineno
-    file = f.func_code.co_filename
-    error = 0
-
-    if isinstance(f,types.MethodType):
-        reqdargs = 2
-    else:
-        reqdargs = 1
-        
-    if f.func_code.co_argcount > reqdargs:
-        sys.stderr.write("%s:%d: Rule '%s' has too many arguments.\n" % (file,line,f.__name__))
-        return -1
-
-    if f.func_code.co_argcount < reqdargs:
-        sys.stderr.write("%s:%d: Rule '%s' requires an argument.\n" % (file,line,f.__name__))
-        return -1
-          
-    if f.__doc__:
-        # Split the doc string into lines
-        pstrings = f.__doc__.splitlines()
-        lastp = None
-        dline = line
-        for ps in pstrings:
-            dline += 1
-            p = ps.split()
-            if not p: continue
-            try:
-                if p[0] == '|':
-                    # This is a continuation of a previous rule
-                    if not lastp:
-                        sys.stderr.write("%s:%d: Misplaced '|'.\n" % (file,dline))
-                        return -1
-                    prodname = lastp
-                    if len(p) > 1:
-                        syms = p[1:]
-                    else:
-                        syms = [ ]
-                else:
-                    prodname = p[0]
-                    lastp = prodname
-                    assign = p[1]
-                    if len(p) > 2:
-                        syms = p[2:]
-                    else:
-                        syms = [ ]
-                    if assign != ':' and assign != '::=':
-                        sys.stderr.write("%s:%d: Syntax error. Expected ':'\n" % (file,dline))
-                        return -1
-                         
- 
-                e = add_production(f,file,dline,prodname,syms)
-                error += e
-
-                
-            except StandardError:
-                sys.stderr.write("%s:%d: Syntax error in rule '%s'\n" % (file,dline,ps))
-                error -= 1
-    else:
-        sys.stderr.write("%s:%d: No documentation string specified in function '%s'\n" % (file,line,f.__name__))
-    return error
-
-
-# Cycle checking code (Michael Dyck)
-
-def compute_reachable():
-    '''
-    Find each symbol that can be reached from the start symbol.
-    Print a warning for any nonterminals that can't be reached.
-    (Unused terminals have already had their warning.)
-    '''
-    Reachable = { }
-    for s in Terminals.keys() + Nonterminals.keys():
-        Reachable[s] = 0
-
-    mark_reachable_from( Productions[0].prod[0], Reachable )
-
-    for s in Nonterminals.keys():
-        if not Reachable[s]:
-            sys.stderr.write("yacc: Symbol '%s' is unreachable.\n" % s)
-
-def mark_reachable_from(s, Reachable):
-    '''
-    Mark all symbols that are reachable from symbol s.
-    '''
-    if Reachable[s]:
-        # We've already reached symbol s.
-        return
-    Reachable[s] = 1
-    for p in Prodnames.get(s,[]):
-        for r in p.prod:
-            mark_reachable_from(r, Reachable)
-
-# -----------------------------------------------------------------------------
-# compute_terminates()
-#
-# This function looks at the various parsing rules and tries to detect
-# infinite recursion cycles (grammar rules where there is no possible way
-# to derive a string of only terminals).
-# -----------------------------------------------------------------------------
-def compute_terminates():
-    '''
-    Raise an error for any symbols that don't terminate.
-    '''
-    Terminates = {}
-
-    # Terminals:
-    for t in Terminals.keys():
-        Terminates[t] = 1
-
-    Terminates['$end'] = 1
-
-    # Nonterminals:
-
-    # Initialize to false:
-    for n in Nonterminals.keys():
-        Terminates[n] = 0
-
-    # Then propagate termination until no change:
-    while 1:
-        some_change = 0
-        for (n,pl) in Prodnames.items():
-            # Nonterminal n terminates iff any of its productions terminates.
-            for p in pl:
-                # Production p terminates iff all of its rhs symbols terminate.
-                for s in p.prod:
-                    if not Terminates[s]:
-                        # The symbol s does not terminate,
-                        # so production p does not terminate.
-                        p_terminates = 0
-                        break
-                else:
-                    # didn't break from the loop,
-                    # so every symbol s terminates
-                    # so production p terminates.
-                    p_terminates = 1
-
-                if p_terminates:
-                    # symbol n terminates!
-                    if not Terminates[n]:
-                        Terminates[n] = 1
-                        some_change = 1
-                    # Don't need to consider any more productions for this n.
-                    break
-
-        if not some_change:
-            break
-
-    some_error = 0
-    for (s,terminates) in Terminates.items():
-        if not terminates:
-            if not Prodnames.has_key(s) and not Terminals.has_key(s) and s != 'error':
-                # s is used-but-not-defined, and we've already warned of that,
-                # so it would be overkill to say that it's also non-terminating.
-                pass
-            else:
-                sys.stderr.write("yacc: Infinite recursion detected for symbol '%s'.\n" % s)
-                some_error = 1
-
-    return some_error
-
-# -----------------------------------------------------------------------------
-# verify_productions()
-#
-# This function examines all of the supplied rules to see if they seem valid.
-# -----------------------------------------------------------------------------
-def verify_productions(cycle_check=1):
-    error = 0
-    for p in Productions:
-        if not p: continue
-
-        for s in p.prod:
-            if not Prodnames.has_key(s) and not Terminals.has_key(s) and s != 'error':
-                sys.stderr.write("%s:%d: Symbol '%s' used, but not defined as a token or a rule.\n" % (p.file,p.line,s))
-                error = 1
-                continue
-
-    unused_tok = 0 
-    # Now verify all of the tokens
-    if yaccdebug:
-        _vf.write("Unused terminals:\n\n")
-    for s,v in Terminals.items():
-        if s != 'error' and not v:
-            sys.stderr.write("yacc: Warning. Token '%s' defined, but not used.\n" % s)
-            if yaccdebug: _vf.write("   %s\n"% s)
-            unused_tok += 1
-
-    # Print out all of the productions
-    if yaccdebug:
-        _vf.write("\nGrammar\n\n")
-        for i in range(1,len(Productions)):
-            _vf.write("Rule %-5d %s\n" % (i, Productions[i]))
-        
-    unused_prod = 0
-    # Verify the use of all productions
-    for s,v in Nonterminals.items():
-        if not v:
-            p = Prodnames[s][0]
-            sys.stderr.write("%s:%d: Warning. Rule '%s' defined, but not used.\n" % (p.file,p.line, s))
-            unused_prod += 1
-
-    
-    if unused_tok == 1:
-        sys.stderr.write("yacc: Warning. There is 1 unused token.\n")
-    if unused_tok > 1:
-        sys.stderr.write("yacc: Warning. There are %d unused tokens.\n" % unused_tok)
-
-    if unused_prod == 1:
-        sys.stderr.write("yacc: Warning. There is 1 unused rule.\n")
-    if unused_prod > 1:
-        sys.stderr.write("yacc: Warning. There are %d unused rules.\n" % unused_prod)
-
-    if yaccdebug:
-        _vf.write("\nTerminals, with rules where they appear\n\n")
-        ks = Terminals.keys()
-        ks.sort()
-        for k in ks:
-            _vf.write("%-20s : %s\n" % (k, " ".join([str(s) for s in Terminals[k]])))
-        _vf.write("\nNonterminals, with rules where they appear\n\n")
-        ks = Nonterminals.keys()
-        ks.sort()
-        for k in ks:
-            _vf.write("%-20s : %s\n" % (k, " ".join([str(s) for s in Nonterminals[k]])))
-
-    if (cycle_check):
-        compute_reachable()
-        error += compute_terminates()
-#        error += check_cycles()
-    return error
-
-# -----------------------------------------------------------------------------
-# build_lritems()
-#
-# This function walks the list of productions and builds a complete set of the
-# LR items.  The LR items are stored in two ways:  First, they are uniquely
-# numbered and placed in the list _lritems.  Second, a linked list of LR items
-# is built for each production.  For example:
-#
-#   E -> E PLUS E
-#
-# Creates the list
-#
-#  [E -> . E PLUS E, E -> E . PLUS E, E -> E PLUS . E, E -> E PLUS E . ] 
-# -----------------------------------------------------------------------------
-
-def build_lritems():
-    for p in Productions:
-        lastlri = p
-        lri = p.lr_item(0)
-        i = 0
-        while 1:
-            lri = p.lr_item(i)
-            lastlri.lr_next = lri
-            if not lri: break
-            lri.lr_num = len(LRitems)
-            LRitems.append(lri)
-            lastlri = lri
-            i += 1
-
-    # In order for the rest of the parser generator to work, we need to
-    # guarantee that no more lritems are generated.  Therefore, we nuke
-    # the p.lr_item method.  (Only used in debugging)
-    # Production.lr_item = None
-
-# -----------------------------------------------------------------------------
-# add_precedence()
-#
-# Given a list of precedence rules, add to the precedence table.
-# -----------------------------------------------------------------------------
-
-def add_precedence(plist):
-    plevel = 0
-    error = 0
-    for p in plist:
-        plevel += 1
-        try:
-            prec = p[0]
-            terms = p[1:]
-            if prec != 'left' and prec != 'right' and prec != 'nonassoc':
-                sys.stderr.write("yacc: Invalid precedence '%s'\n" % prec)
-                return -1
-            for t in terms:
-                if Precedence.has_key(t):
-                    sys.stderr.write("yacc: Precedence already specified for terminal '%s'\n" % t)
-                    error += 1
-                    continue
-                Precedence[t] = (prec,plevel)
-        except:
-            sys.stderr.write("yacc: Invalid precedence table.\n")
-            error += 1
-
-    return error
-
-# -----------------------------------------------------------------------------
-# augment_grammar()
-#
-# Compute the augmented grammar.  This is just a rule S' -> start where start
-# is the starting symbol.
-# -----------------------------------------------------------------------------
-
-def augment_grammar(start=None):
-    if not start:
-        start = Productions[1].name
-    Productions[0] = Production(name="S'",prod=[start],number=0,len=1,prec=('right',0),func=None)
-    Productions[0].usyms = [ start ]
-    Nonterminals[start].append(0)
-
-
-# -------------------------------------------------------------------------
-# first()
-#
-# Compute the value of FIRST1(beta) where beta is a tuple of symbols.
-#
-# During execution of compute_first1, the result may be incomplete.
-# Afterward (e.g., when called from compute_follow()), it will be complete.
-# -------------------------------------------------------------------------
-def first(beta):
-
-    # We are computing First(x1,x2,x3,...,xn)
-    result = [ ]
-    for x in beta:
-        x_produces_empty = 0
-
-        # Add all the non-<empty> symbols of First[x] to the result.
-        for f in First[x]:
-            if f == '<empty>':
-                x_produces_empty = 1
-            else:
-                if f not in result: result.append(f)
-
-        if x_produces_empty:
-            # We have to consider the next x in beta,
-            # i.e. stay in the loop.
-            pass
-        else:
-            # We don't have to consider any further symbols in beta.
-            break
-    else:
-        # There was no 'break' from the loop,
-        # so x_produces_empty was true for all x in beta,
-        # so beta produces empty as well.
-        result.append('<empty>')
-
-    return result
-
-
-# FOLLOW(x)
-# Given a non-terminal.  This function computes the set of all symbols
-# that might follow it.  Dragon book, p. 189.
-
-def compute_follow(start=None):
-    # Add '$end' to the follow list of the start symbol
-    for k in Nonterminals.keys():
-        Follow[k] = [ ]
-
-    if not start:
-        start = Productions[1].name
-        
-    Follow[start] = [ '$end' ]
-        
-    while 1:
-        didadd = 0
-        for p in Productions[1:]:
-            # Here is the production set
-            for i in range(len(p.prod)):
-                B = p.prod[i]
-                if Nonterminals.has_key(B):
-                    # Okay. We got a non-terminal in a production
-                    fst = first(p.prod[i+1:])
-                    hasempty = 0
-                    for f in fst:
-                        if f != '<empty>' and f not in Follow[B]:
-                            Follow[B].append(f)
-                            didadd = 1
-                        if f == '<empty>':
-                            hasempty = 1
-                    if hasempty or i == (len(p.prod)-1):
-                        # Add elements of follow(a) to follow(b)
-                        for f in Follow[p.name]:
-                            if f not in Follow[B]:
-                                Follow[B].append(f)
-                                didadd = 1
-        if not didadd: break
-
-    if 0 and yaccdebug:
-        _vf.write('\nFollow:\n')
-        for k in Nonterminals.keys():
-            _vf.write("%-20s : %s\n" % (k, " ".join([str(s) for s in Follow[k]])))
-
-# -------------------------------------------------------------------------
-# compute_first1()
-#
-# Compute the value of FIRST1(X) for all symbols
-# -------------------------------------------------------------------------
-def compute_first1():
-
-    # Terminals:
-    for t in Terminals.keys():
-        First[t] = [t]
-
-    First['$end'] = ['$end']
-    First['#'] = ['#'] # what's this for?
-
-    # Nonterminals:
-
-    # Initialize to the empty set:
-    for n in Nonterminals.keys():
-        First[n] = []
-
-    # Then propagate symbols until no change:
-    while 1:
-        some_change = 0
-        for n in Nonterminals.keys():
-            for p in Prodnames[n]:
-                for f in first(p.prod):
-                    if f not in First[n]:
-                        First[n].append( f )
-                        some_change = 1
-        if not some_change:
-            break
-
-    if 0 and yaccdebug:
-        _vf.write('\nFirst:\n')
-        for k in Nonterminals.keys():
-            _vf.write("%-20s : %s\n" %
-                (k, " ".join([str(s) for s in First[k]])))
-
-# -----------------------------------------------------------------------------
-#                           === SLR Generation ===
-#
-# The following functions are used to construct SLR (Simple LR) parsing tables
-# as described on p.221-229 of the dragon book.
-# -----------------------------------------------------------------------------
-
-# Global variables for the LR parsing engine
-def lr_init_vars():
-    global _lr_action, _lr_goto, _lr_method
-    global _lr_goto_cache, _lr0_cidhash
-    
-    _lr_action       = { }        # Action table
-    _lr_goto         = { }        # Goto table
-    _lr_method       = "Unknown"  # LR method used
-    _lr_goto_cache   = { }
-    _lr0_cidhash     = { }
-
-
-# Compute the LR(0) closure operation on I, where I is a set of LR(0) items.
-# prodlist is a list of productions.
-
-_add_count = 0       # Counter used to detect cycles
-
-def lr0_closure(I):
-    global _add_count
-    
-    _add_count += 1
-    prodlist = Productions
-    
-    # Add everything in I to J        
-    J = I[:]
-    didadd = 1
-    while didadd:
-        didadd = 0
-        for j in J:
-            for x in j.lrafter:
-                if x.lr0_added == _add_count: continue
-                # Add B --> .G to J
-                J.append(x.lr_next)
-                x.lr0_added = _add_count
-                didadd = 1
-               
-    return J
-
-# Compute the LR(0) goto function goto(I,X) where I is a set
-# of LR(0) items and X is a grammar symbol.   This function is written
-# in a way that guarantees uniqueness of the generated goto sets
-# (i.e. the same goto set will never be returned as two different Python
-# objects).  With uniqueness, we can later do fast set comparisons using
-# id(obj) instead of element-wise comparison.
-
-def lr0_goto(I,x):
-    # First we look for a previously cached entry
-    g = _lr_goto_cache.get((id(I),x),None)
-    if g: return g
-
-    # Now we generate the goto set in a way that guarantees uniqueness
-    # of the result
-    
-    s = _lr_goto_cache.get(x,None)
-    if not s:
-        s = { }
-        _lr_goto_cache[x] = s
-
-    gs = [ ]
-    for p in I:
-        n = p.lr_next
-        if n and n.lrbefore == x:
-            s1 = s.get(id(n),None)
-            if not s1:
-                s1 = { }
-                s[id(n)] = s1
-            gs.append(n)
-            s = s1
-    g = s.get('$end',None)
-    if not g:
-        if gs:
-            g = lr0_closure(gs)
-            s['$end'] = g
-        else:
-            s['$end'] = gs
-    _lr_goto_cache[(id(I),x)] = g
-    return g
-
-_lr0_cidhash = { }
-
-# Compute the LR(0) sets of item function
-def lr0_items():
-    
-    C = [ lr0_closure([Productions[0].lr_next]) ]
-    i = 0
-    for I in C:
-        _lr0_cidhash[id(I)] = i
-        i += 1
-
-    # Loop over the items in C and each grammar symbols
-    i = 0
-    while i < len(C):
-        I = C[i]
-        i += 1
-
-        # Collect all of the symbols that could possibly be in the goto(I,X) sets
-        asyms = { }
-        for ii in I:
-            for s in ii.usyms:
-                asyms[s] = None
-
-        for x in asyms.keys():
-            g = lr0_goto(I,x)
-            if not g:  continue
-            if _lr0_cidhash.has_key(id(g)): continue
-            _lr0_cidhash[id(g)] = len(C)            
-            C.append(g)
-            
-    return C
-
-# -----------------------------------------------------------------------------
-#                       ==== LALR(1) Parsing ====
-#
-# LALR(1) parsing is almost exactly the same as SLR except that instead of
-# relying upon Follow() sets when performing reductions, a more selective
-# lookahead set that incorporates the state of the LR(0) machine is utilized.
-# Thus, we mainly just have to focus on calculating the lookahead sets.
-#
-# The method used here is due to DeRemer and Pennelo (1982).
-#
-# DeRemer, F. L., and T. J. Pennelo: "Efficient Computation of LALR(1)
-#     Lookahead Sets", ACM Transactions on Programming Languages and Systems,
-#     Vol. 4, No. 4, Oct. 1982, pp. 615-649
-#
-# Further details can also be found in:
-#
-#  J. Tremblay and P. Sorenson, "The Theory and Practice of Compiler Writing",
-#      McGraw-Hill Book Company, (1985).
-#
-# Note:  This implementation is a complete replacement of the LALR(1) 
-#        implementation in PLY-1.x releases.   That version was based on
-#        a less efficient algorithm and it had bugs in its implementation.
-# -----------------------------------------------------------------------------
-
-# -----------------------------------------------------------------------------
-# compute_nullable_nonterminals()
-#
-# Creates a dictionary containing all of the non-terminals that might produce
-# an empty production.   
-# -----------------------------------------------------------------------------
-
-def compute_nullable_nonterminals():
-    nullable = {}
-    num_nullable = 0
-    while 1:
-       for p in Productions[1:]:
-           if p.len == 0:
-                nullable[p.name] = 1
-                continue
-           for t in p.prod:
-                if not nullable.has_key(t): break
-           else:
-                nullable[p.name] = 1
-       if len(nullable) == num_nullable: break
-       num_nullable = len(nullable)
-    return nullable
-
-# -----------------------------------------------------------------------------
-# find_nonterminal_trans(C)
-#
-# Given a set of LR(0) items, this functions finds all of the non-terminal
-# transitions.    These are transitions in which a dot appears immediately before
-# a non-terminal.   Returns a list of tuples of the form (state,N) where state
-# is the state number and N is the nonterminal symbol.
-#
-# The input C is the set of LR(0) items.
-# -----------------------------------------------------------------------------
-
-def find_nonterminal_transitions(C):
-     trans = []
-     for state in range(len(C)):
-         for p in C[state]:
-             if p.lr_index < p.len - 1:
-                  t = (state,p.prod[p.lr_index+1])
-                  if Nonterminals.has_key(t[1]):
-                        if t not in trans: trans.append(t)
-         state = state + 1
-     return trans
-
-# -----------------------------------------------------------------------------
-# dr_relation()
-#
-# Computes the DR(p,A) relationships for non-terminal transitions.  The input
-# is a tuple (state,N) where state is a number and N is a nonterminal symbol.
-#
-# Returns a list of terminals.
-# -----------------------------------------------------------------------------
-
-def dr_relation(C,trans,nullable):
-    dr_set = { }
-    state,N = trans
-    terms = []
-
-    g = lr0_goto(C[state],N)
-    for p in g:
-       if p.lr_index < p.len - 1:
-           a = p.prod[p.lr_index+1]
-           if Terminals.has_key(a):
-               if a not in terms: terms.append(a)
-
-    # This extra bit is to handle the start state
-    if state == 0 and N == Productions[0].prod[0]:
-       terms.append('$end')
- 
-    return terms
-
-# -----------------------------------------------------------------------------
-# reads_relation()
-#
-# Computes the READS() relation (p,A) READS (t,C).
-# -----------------------------------------------------------------------------
-
-def reads_relation(C, trans, empty):
-    # Look for empty transitions
-    rel = []
-    state, N = trans
-
-    g = lr0_goto(C[state],N)
-    j = _lr0_cidhash.get(id(g),-1)
-    for p in g:
-        if p.lr_index < p.len - 1:
-             a = p.prod[p.lr_index + 1]
-             if empty.has_key(a):
-                  rel.append((j,a))
-
-    return rel
-
-# -----------------------------------------------------------------------------
-# compute_lookback_includes()
-#
-# Determines the lookback and includes relations
-#
-# LOOKBACK:
-# 
-# This relation is determined by running the LR(0) state machine forward.
-# For example, starting with a production "N : . A B C", we run it forward
-# to obtain "N : A B C ."   We then build a relationship between this final
-# state and the starting state.   These relationships are stored in a dictionary
-# lookdict.   
-#
-# INCLUDES:
-#
-# Computes the INCLUDE() relation (p,A) INCLUDES (p',B).   
-#
-# This relation is used to determine non-terminal transitions that occur
-# inside of other non-terminal transition states.   (p,A) INCLUDES (p', B)
-# if the following holds:
-#
-#       B -> LAT, where T -> epsilon and p' -L-> p 
-#
-# L is essentially a prefix (which may be empty), T is a suffix that must be
-# able to derive an empty string.  State p' must lead to state p with the string L.
-# 
-# -----------------------------------------------------------------------------
-
-def compute_lookback_includes(C,trans,nullable):
-    
-    lookdict = {}          # Dictionary of lookback relations
-    includedict = {}       # Dictionary of include relations
-
-    # Make a dictionary of non-terminal transitions
-    dtrans = {}
-    for t in trans:
-        dtrans[t] = 1
-    
-    # Loop over all transitions and compute lookbacks and includes
-    for state,N in trans:
-        lookb = []
-        includes = []
-        for p in C[state]:
-            if p.name != N: continue
-        
-            # Okay, we have a name match.  We now follow the production all the way
-            # through the state machine until we get the . on the right hand side
-
-            lr_index = p.lr_index
-            j = state
-            while lr_index < p.len - 1:
-                 lr_index = lr_index + 1
-                 t = p.prod[lr_index]
-
-                 # Check to see if this symbol and state are a non-terminal transition
-                 if dtrans.has_key((j,t)):
-                       # Yes.  Okay, there is some chance that this is an includes relation
-                       # the only way to know for certain is whether the rest of the 
-                       # production derives empty
-
-                       li = lr_index + 1
-                       while li < p.len:
-                            if Terminals.has_key(p.prod[li]): break      # No forget it
-                            if not nullable.has_key(p.prod[li]): break
-                            li = li + 1
-                       else:
-                            # Appears to be a relation between (j,t) and (state,N)
-                            includes.append((j,t))
-
-                 g = lr0_goto(C[j],t)               # Go to next set             
-                 j = _lr0_cidhash.get(id(g),-1)     # Go to next state
-             
-            # When we get here, j is the final state, now we have to locate the production
-            for r in C[j]:
-                 if r.name != p.name: continue
-                 if r.len != p.len:   continue
-                 i = 0
-                 # This look is comparing a production ". A B C" with "A B C ."
-                 while i < r.lr_index:
-                      if r.prod[i] != p.prod[i+1]: break
-                      i = i + 1
-                 else:
-                      lookb.append((j,r))
-        for i in includes:
-             if not includedict.has_key(i): includedict[i] = []
-             includedict[i].append((state,N))
-        lookdict[(state,N)] = lookb
-
-    return lookdict,includedict
-
-# -----------------------------------------------------------------------------
-# digraph()
-# traverse()
-#
-# The following two functions are used to compute set valued functions
-# of the form:
-#
-#     F(x) = F'(x) U U{F(y) | x R y}
-#
-# This is used to compute the values of Read() sets as well as FOLLOW sets
-# in LALR(1) generation.
-#
-# Inputs:  X    - An input set
-#          R    - A relation
-#          FP   - Set-valued function
-# ------------------------------------------------------------------------------
-
-def digraph(X,R,FP):
-    N = { }
-    for x in X:
-       N[x] = 0
-    stack = []
-    F = { }
-    for x in X:
-        if N[x] == 0: traverse(x,N,stack,F,X,R,FP)
-    return F
-
-def traverse(x,N,stack,F,X,R,FP):
-    stack.append(x)
-    d = len(stack)
-    N[x] = d
-    F[x] = FP(x)             # F(X) <- F'(x)
-    
-    rel = R(x)               # Get y's related to x
-    for y in rel:
-        if N[y] == 0:
-             traverse(y,N,stack,F,X,R,FP)
-        N[x] = min(N[x],N[y])
-        for a in F.get(y,[]):
-            if a not in F[x]: F[x].append(a)
-    if N[x] == d:
-       N[stack[-1]] = sys.maxint
-       F[stack[-1]] = F[x]
-       element = stack.pop()
-       while element != x:
-           N[stack[-1]] = sys.maxint
-           F[stack[-1]] = F[x]
-           element = stack.pop()
-
-# -----------------------------------------------------------------------------
-# compute_read_sets()
-#
-# Given a set of LR(0) items, this function computes the read sets.
-#
-# Inputs:  C        =  Set of LR(0) items
-#          ntrans   = Set of nonterminal transitions
-#          nullable = Set of empty transitions
-#
-# Returns a set containing the read sets
-# -----------------------------------------------------------------------------
-
-def compute_read_sets(C, ntrans, nullable):
-    FP = lambda x: dr_relation(C,x,nullable)
-    R =  lambda x: reads_relation(C,x,nullable)
-    F = digraph(ntrans,R,FP)
-    return F
-
-# -----------------------------------------------------------------------------
-# compute_follow_sets()
-#
-# Given a set of LR(0) items, a set of non-terminal transitions, a readset, 
-# and an include set, this function computes the follow sets
-#
-# Follow(p,A) = Read(p,A) U U {Follow(p',B) | (p,A) INCLUDES (p',B)}
-#
-# Inputs:    
-#            ntrans     = Set of nonterminal transitions
-#            readsets   = Readset (previously computed)
-#            inclsets   = Include sets (previously computed)
-#
-# Returns a set containing the follow sets      
-# -----------------------------------------------------------------------------
-
-def compute_follow_sets(ntrans,readsets,inclsets):
-     FP = lambda x: readsets[x]
-     R  = lambda x: inclsets.get(x,[])
-     F = digraph(ntrans,R,FP)
-     return F
-
-# -----------------------------------------------------------------------------
-# add_lookaheads()
-#
-# Attaches the lookahead symbols to grammar rules. 
-#
-# Inputs:    lookbacks         -  Set of lookback relations
-#            followset         -  Computed follow set
-#
-# This function directly attaches the lookaheads to productions contained
-# in the lookbacks set
-# -----------------------------------------------------------------------------
-
-def add_lookaheads(lookbacks,followset):
-    for trans,lb in lookbacks.items():
-        # Loop over productions in lookback
-        for state,p in lb:
-             if not p.lookaheads.has_key(state):
-                  p.lookaheads[state] = []
-             f = followset.get(trans,[])
-             for a in f:
-                  if a not in p.lookaheads[state]: p.lookaheads[state].append(a)
-
-# -----------------------------------------------------------------------------
-# add_lalr_lookaheads()
-#
-# This function does all of the work of adding lookahead information for use
-# with LALR parsing
-# -----------------------------------------------------------------------------
-
-def add_lalr_lookaheads(C):
-    # Determine all of the nullable nonterminals
-    nullable = compute_nullable_nonterminals()
-
-    # Find all non-terminal transitions
-    trans = find_nonterminal_transitions(C)
-
-    # Compute read sets
-    readsets = compute_read_sets(C,trans,nullable)
-
-    # Compute lookback/includes relations
-    lookd, included = compute_lookback_includes(C,trans,nullable)
-
-    # Compute LALR FOLLOW sets
-    followsets = compute_follow_sets(trans,readsets,included)
-    
-    # Add all of the lookaheads
-    add_lookaheads(lookd,followsets)
-
-# -----------------------------------------------------------------------------
-# lr_parse_table()
-#
-# This function constructs the parse tables for SLR or LALR
-# -----------------------------------------------------------------------------
-def lr_parse_table(method):
-    global _lr_method
-    goto = _lr_goto           # Goto array
-    action = _lr_action       # Action array
-    actionp = { }             # Action production array (temporary)
-
-    _lr_method = method
-    
-    n_srconflict = 0
-    n_rrconflict = 0
-
-    if yaccdebug:
-        sys.stderr.write("yacc: Generating %s parsing table...\n" % method)        
-        _vf.write("\n\nParsing method: %s\n\n" % method)
-        
-    # Step 1: Construct C = { I0, I1, ... IN}, collection of LR(0) items
-    # This determines the number of states
-    
-    C = lr0_items()
-
-    if method == 'LALR':
-        add_lalr_lookaheads(C)
-
-    # Build the parser table, state by state
-    st = 0
-    for I in C:
-        # Loop over each production in I
-        actlist = [ ]              # List of actions
-        
-        if yaccdebug:
-            _vf.write("\nstate %d\n\n" % st)
-            for p in I:
-                _vf.write("    (%d) %s\n" % (p.number, str(p)))
-            _vf.write("\n")
-
-        for p in I:
-            try:
-                if p.prod[-1] == ".":
-                    if p.name == "S'":
-                        # Start symbol. Accept!
-                        action[st,"$end"] = 0
-                        actionp[st,"$end"] = p
-                    else:
-                        # We are at the end of a production.  Reduce!
-                        if method == 'LALR':
-                            laheads = p.lookaheads[st]
-                        else:
-                            laheads = Follow[p.name]
-                        for a in laheads:
-                            actlist.append((a,p,"reduce using rule %d (%s)" % (p.number,p)))
-                            r = action.get((st,a),None)
-                            if r is not None:
-                                # Whoa. Have a shift/reduce or reduce/reduce conflict
-                                if r > 0:
-                                    # Need to decide on shift or reduce here
-                                    # By default we favor shifting. Need to add
-                                    # some precedence rules here.
-                                    sprec,slevel = Productions[actionp[st,a].number].prec                                    
-                                    rprec,rlevel = Precedence.get(a,('right',0))
-                                    if (slevel < rlevel) or ((slevel == rlevel) and (rprec == 'left')):
-                                        # We really need to reduce here.  
-                                        action[st,a] = -p.number
-                                        actionp[st,a] = p
-                                        if not slevel and not rlevel:
-                                            _vfc.write("shift/reduce conflict in state %d resolved as reduce.\n" % st)
-                                            _vf.write("  ! shift/reduce conflict for %s resolved as reduce.\n" % a)
-                                            n_srconflict += 1
-                                    elif (slevel == rlevel) and (rprec == 'nonassoc'):
-                                        action[st,a] = None
-                                    else:
-                                        # Hmmm. Guess we'll keep the shift
-                                        if not rlevel:
-                                            _vfc.write("shift/reduce conflict in state %d resolved as shift.\n" % st)
-                                            _vf.write("  ! shift/reduce conflict for %s resolved as shift.\n" % a)
-                                            n_srconflict +=1                                    
-                                elif r < 0:
-                                    # Reduce/reduce conflict.   In this case, we favor the rule
-                                    # that was defined first in the grammar file
-                                    oldp = Productions[-r]
-                                    pp = Productions[p.number]
-                                    if oldp.line > pp.line:
-                                        action[st,a] = -p.number
-                                        actionp[st,a] = p
-                                    # sys.stderr.write("Reduce/reduce conflict in state %d\n" % st)
-                                    n_rrconflict += 1
-                                    _vfc.write("reduce/reduce conflict in state %d resolved using rule %d (%s).\n" % (st, actionp[st,a].number, actionp[st,a]))
-                                    _vf.write("  ! reduce/reduce conflict for %s resolved using rule %d (%s).\n" % (a,actionp[st,a].number, actionp[st,a]))
-                                else:
-                                    sys.stderr.write("Unknown conflict in state %d\n" % st)
-                            else:
-                                action[st,a] = -p.number
-                                actionp[st,a] = p
-                else:
-                    i = p.lr_index
-                    a = p.prod[i+1]       # Get symbol right after the "."
-                    if Terminals.has_key(a):
-                        g = lr0_goto(I,a)
-                        j = _lr0_cidhash.get(id(g),-1)
-                        if j >= 0:
-                            # We are in a shift state
-                            actlist.append((a,p,"shift and go to state %d" % j))
-                            r = action.get((st,a),None)
-                            if r is not None:
-                                # Whoa have a shift/reduce or shift/shift conflict
-                                if r > 0:
-                                    if r != j:
-                                        sys.stderr.write("Shift/shift conflict in state %d\n" % st)
-                                elif r < 0:
-                                    # Do a precedence check.
-                                    #   -  if precedence of reduce rule is higher, we reduce.
-                                    #   -  if precedence of reduce is same and left assoc, we reduce.
-                                    #   -  otherwise we shift
-                                    rprec,rlevel = Productions[actionp[st,a].number].prec
-                                    sprec,slevel = Precedence.get(a,('right',0))
-                                    if (slevel > rlevel) or ((slevel == rlevel) and (rprec != 'left')):
-                                        # We decide to shift here... highest precedence to shift
-                                        action[st,a] = j
-                                        actionp[st,a] = p
-                                        if not rlevel:
-                                            n_srconflict += 1
-                                            _vfc.write("shift/reduce conflict in state %d resolved as shift.\n" % st)
-                                            _vf.write("  ! shift/reduce conflict for %s resolved as shift.\n" % a)
-                                    elif (slevel == rlevel) and (rprec == 'nonassoc'):
-                                        action[st,a] = None
-                                    else:                                            
-                                        # Hmmm. Guess we'll keep the reduce
-                                        if not slevel and not rlevel:
-                                            n_srconflict +=1
-                                            _vfc.write("shift/reduce conflict in state %d resolved as reduce.\n" % st)
-                                            _vf.write("  ! shift/reduce conflict for %s resolved as reduce.\n" % a)
-                                            
-                                else:
-                                    sys.stderr.write("Unknown conflict in state %d\n" % st)
-                            else:
-                                action[st,a] = j
-                                actionp[st,a] = p
-                                
-            except StandardError,e:
-                raise YaccError, "Hosed in lr_parse_table", e
-
-        # Print the actions associated with each terminal
-        if yaccdebug:
-          _actprint = { }
-          for a,p,m in actlist:
-            if action.has_key((st,a)):
-                if p is actionp[st,a]:
-                    _vf.write("    %-15s %s\n" % (a,m))
-                    _actprint[(a,m)] = 1
-          _vf.write("\n")
-          for a,p,m in actlist:
-            if action.has_key((st,a)):
-                if p is not actionp[st,a]:
-                    if not _actprint.has_key((a,m)):
-                        _vf.write("  ! %-15s [ %s ]\n" % (a,m))
-                        _actprint[(a,m)] = 1
-            
-        # Construct the goto table for this state
-        if yaccdebug:
-            _vf.write("\n")
-        nkeys = { }
-        for ii in I:
-            for s in ii.usyms:
-                if Nonterminals.has_key(s):
-                    nkeys[s] = None
-        for n in nkeys.keys():
-            g = lr0_goto(I,n)
-            j = _lr0_cidhash.get(id(g),-1)            
-            if j >= 0:
-                goto[st,n] = j
-                if yaccdebug:
-                    _vf.write("    %-30s shift and go to state %d\n" % (n,j))
-
-        st += 1
-
-    if yaccdebug:
-        if n_srconflict == 1:
-            sys.stderr.write("yacc: %d shift/reduce conflict\n" % n_srconflict)
-        if n_srconflict > 1:
-            sys.stderr.write("yacc: %d shift/reduce conflicts\n" % n_srconflict)
-        if n_rrconflict == 1:
-            sys.stderr.write("yacc: %d reduce/reduce conflict\n" % n_rrconflict)
-        if n_rrconflict > 1:
-            sys.stderr.write("yacc: %d reduce/reduce conflicts\n" % n_rrconflict)
-
-# -----------------------------------------------------------------------------
-#                          ==== LR Utility functions ====
-# -----------------------------------------------------------------------------
-
-# -----------------------------------------------------------------------------
-# _lr_write_tables()
-#
-# This function writes the LR parsing tables to a file
-# -----------------------------------------------------------------------------
-
-def lr_write_tables(modulename=tab_module,outputdir=''):
-    filename = os.path.join(outputdir,modulename) + ".py"
-    try:
-        f = open(filename,"w")
-
-        f.write("""
-# %s
-# This file is automatically generated. Do not edit.
-
-_lr_method = %s
-
-_lr_signature = %s
-""" % (filename, repr(_lr_method), repr(Signature.digest())))
-
-        # Change smaller to 0 to go back to original tables
-        smaller = 1
-                
-        # Factor out names to try and make smaller
-        if smaller:
-            items = { }
-        
-            for k,v in _lr_action.items():
-                i = items.get(k[1])
-                if not i:
-                    i = ([],[])
-                    items[k[1]] = i
-                i[0].append(k[0])
-                i[1].append(v)
-
-            f.write("\n_lr_action_items = {")
-            for k,v in items.items():
-                f.write("%r:([" % k)
-                for i in v[0]:
-                    f.write("%r," % i)
-                f.write("],[")
-                for i in v[1]:
-                    f.write("%r," % i)
-                           
-                f.write("]),")
-            f.write("}\n")
-
-            f.write("""
-_lr_action = { }
-for _k, _v in _lr_action_items.items():
-   for _x,_y in zip(_v[0],_v[1]):
-       _lr_action[(_x,_k)] = _y
-del _lr_action_items
-""")
-            
-        else:
-            f.write("\n_lr_action = { ");
-            for k,v in _lr_action.items():
-                f.write("(%r,%r):%r," % (k[0],k[1],v))
-            f.write("}\n");
-
-        if smaller:
-            # Factor out names to try and make smaller
-            items = { }
-        
-            for k,v in _lr_goto.items():
-                i = items.get(k[1])
-                if not i:
-                    i = ([],[])
-                    items[k[1]] = i
-                i[0].append(k[0])
-                i[1].append(v)
-
-            f.write("\n_lr_goto_items = {")
-            for k,v in items.items():
-                f.write("%r:([" % k)
-                for i in v[0]:
-                    f.write("%r," % i)
-                f.write("],[")
-                for i in v[1]:
-                    f.write("%r," % i)
-                           
-                f.write("]),")
-            f.write("}\n")
-
-            f.write("""
-_lr_goto = { }
-for _k, _v in _lr_goto_items.items():
-   for _x,_y in zip(_v[0],_v[1]):
-       _lr_goto[(_x,_k)] = _y
-del _lr_goto_items
-""")
-        else:
-            f.write("\n_lr_goto = { ");
-            for k,v in _lr_goto.items():
-                f.write("(%r,%r):%r," % (k[0],k[1],v))                    
-            f.write("}\n");
-
-        # Write production table
-        f.write("_lr_productions = [\n")
-        for p in Productions:
-            if p:
-                if (p.func):
-                    f.write("  (%r,%d,%r,%r,%d),\n" % (p.name, p.len, p.func.__name__,p.file,p.line))
-                else:
-                    f.write("  (%r,%d,None,None,None),\n" % (p.name, p.len))
-            else:
-                f.write("  None,\n")
-        f.write("]\n")
-        
-        f.close()
-
-    except IOError,e:
-        print "Unable to create '%s'" % filename
-        print e
-        return
-
-def lr_read_tables(module=tab_module,optimize=0):
-    global _lr_action, _lr_goto, _lr_productions, _lr_method
-    try:
-        exec "import %s as parsetab" % module
-        
-        if (optimize) or (Signature.digest() == parsetab._lr_signature):
-            _lr_action = parsetab._lr_action
-            _lr_goto   = parsetab._lr_goto
-            _lr_productions = parsetab._lr_productions
-            _lr_method = parsetab._lr_method
-            return 1
-        else:
-            return 0
-        
-    except (ImportError,AttributeError):
-        return 0
-
-
-# Available instance types.  This is used when parsers are defined by a class.
-# it's a little funky because I want to preserve backwards compatibility
-# with Python 2.0 where types.ObjectType is undefined.
-
-try:
-   _INSTANCETYPE = (types.InstanceType, types.ObjectType)
-except AttributeError:
-   _INSTANCETYPE = types.InstanceType
-
-# -----------------------------------------------------------------------------
-# yacc(module)
-#
-# Build the parser module
-# -----------------------------------------------------------------------------
-
-def yacc(method=default_lr, debug=yaccdebug, module=None, tabmodule=tab_module, start=None, check_recursion=1, optimize=0,write_tables=1,debugfile=debug_file,outputdir=''):
-    global yaccdebug
-    yaccdebug = debug
-    
-    initialize_vars()
-    files = { }
-    error = 0
-
-
-    # Add parsing method to signature
-    Signature.update(method)
-    
-    # If a "module" parameter was supplied, extract its dictionary.
-    # Note: a module may in fact be an instance as well.
-    
-    if module:
-        # User supplied a module object.
-        if isinstance(module, types.ModuleType):
-            ldict = module.__dict__
-        elif isinstance(module, _INSTANCETYPE):
-            _items = [(k,getattr(module,k)) for k in dir(module)]
-            ldict = { }
-            for i in _items:
-                ldict[i[0]] = i[1]
-        else:
-            raise ValueError,"Expected a module"
-        
-    else:
-        # No module given.  We might be able to get information from the caller.
-        # Throw an exception and unwind the traceback to get the globals
-        
-        try:
-            raise RuntimeError
-        except RuntimeError:
-            e,b,t = sys.exc_info()
-            f = t.tb_frame
-            f = f.f_back           # Walk out to our calling function
-            ldict = f.f_globals    # Grab its globals dictionary
-
-    # Add starting symbol to signature
-    if not start:
-        start = ldict.get("start",None)
-    if start:
-        Signature.update(start)
-
-    # If running in optimized mode.  We're going to
-
-    if (optimize and lr_read_tables(tabmodule,1)):
-        # Read parse table
-        del Productions[:]
-        for p in _lr_productions:
-            if not p:
-                Productions.append(None)
-            else:
-                m = MiniProduction()
-                m.name = p[0]
-                m.len  = p[1]
-                m.file = p[3]
-                m.line = p[4]
-                if p[2]:
-                    m.func = ldict[p[2]]
-                Productions.append(m)
-        
-    else:
-        # Get the tokens map
-        if (module and isinstance(module,_INSTANCETYPE)):
-            tokens = getattr(module,"tokens",None)
-        else:
-            tokens = ldict.get("tokens",None)
-    
-        if not tokens:
-            raise YaccError,"module does not define a list 'tokens'"
-        if not (isinstance(tokens,types.ListType) or isinstance(tokens,types.TupleType)):
-            raise YaccError,"tokens must be a list or tuple."
-
-        # Check to see if a requires dictionary is defined.
-        requires = ldict.get("require",None)
-        if requires:
-            if not (isinstance(requires,types.DictType)):
-                raise YaccError,"require must be a dictionary."
-
-            for r,v in requires.items():
-                try:
-                    if not (isinstance(v,types.ListType)):
-                        raise TypeError
-                    v1 = [x.split(".") for x in v]
-                    Requires[r] = v1
-                except StandardError:
-                    print "Invalid specification for rule '%s' in require. Expected a list of strings" % r            
-
-        
-        # Build the dictionary of terminals.  We a record a 0 in the
-        # dictionary to track whether or not a terminal is actually
-        # used in the grammar
-
-        if 'error' in tokens:
-            print "yacc: Illegal token 'error'.  Is a reserved word."
-            raise YaccError,"Illegal token name"
-
-        for n in tokens:
-            if Terminals.has_key(n):
-                print "yacc: Warning. Token '%s' multiply defined." % n
-            Terminals[n] = [ ]
-
-        Terminals['error'] = [ ]
-
-        # Get the precedence map (if any)
-        prec = ldict.get("precedence",None)
-        if prec:
-            if not (isinstance(prec,types.ListType) or isinstance(prec,types.TupleType)):
-                raise YaccError,"precedence must be a list or tuple."
-            add_precedence(prec)
-            Signature.update(repr(prec))
-
-        for n in tokens:
-            if not Precedence.has_key(n):
-                Precedence[n] = ('right',0)         # Default, right associative, 0 precedence
-
-        # Look for error handler
-        ef = ldict.get('p_error',None)
-        if ef:
-            if isinstance(ef,types.FunctionType):
-                ismethod = 0
-            elif isinstance(ef, types.MethodType):
-                ismethod = 1
-            else:
-                raise YaccError,"'p_error' defined, but is not a function or method."                
-            eline = ef.func_code.co_firstlineno
-            efile = ef.func_code.co_filename
-            files[efile] = None
-
-            if (ef.func_code.co_argcount != 1+ismethod):
-                raise YaccError,"%s:%d: p_error() requires 1 argument." % (efile,eline)
-            global Errorfunc
-            Errorfunc = ef
-        else:
-            print "yacc: Warning. no p_error() function is defined."
-            
-        # Get the list of built-in functions with p_ prefix
-        symbols = [ldict[f] for f in ldict.keys()
-               if (type(ldict[f]) in (types.FunctionType, types.MethodType) and ldict[f].__name__[:2] == 'p_'
-                   and ldict[f].__name__ != 'p_error')]
-
-        # Check for non-empty symbols
-        if len(symbols) == 0:
-            raise YaccError,"no rules of the form p_rulename are defined."
-    
-        # Sort the symbols by line number
-        symbols.sort(lambda x,y: cmp(x.func_code.co_firstlineno,y.func_code.co_firstlineno))
-
-        # Add all of the symbols to the grammar
-        for f in symbols:
-            if (add_function(f)) < 0:
-                error += 1
-            else:
-                files[f.func_code.co_filename] = None
-
-        # Make a signature of the docstrings
-        for f in symbols:
-            if f.__doc__:
-                Signature.update(f.__doc__)
-    
-        lr_init_vars()
-
-        if error:
-            raise YaccError,"Unable to construct parser."
-
-        if not lr_read_tables(tabmodule):
-
-            # Validate files
-            for filename in files.keys():
-                if not validate_file(filename):
-                    error = 1
-
-            # Validate dictionary
-            validate_dict(ldict)
-
-            if start and not Prodnames.has_key(start):
-                raise YaccError,"Bad starting symbol '%s'" % start
-        
-            augment_grammar(start)    
-            error = verify_productions(cycle_check=check_recursion)
-            otherfunc = [ldict[f] for f in ldict.keys()
-               if (type(f) in (types.FunctionType,types.MethodType) and ldict[f].__name__[:2] != 'p_')]
-
-            if error:
-                raise YaccError,"Unable to construct parser."
-            
-            build_lritems()
-            compute_first1()
-            compute_follow(start)
-        
-            if method in ['SLR','LALR']:
-                lr_parse_table(method)
-            else:
-                raise YaccError, "Unknown parsing method '%s'" % method
-
-            if write_tables:
-                lr_write_tables(tabmodule,outputdir)        
-    
-            if yaccdebug:
-                try:
-                    f = open(os.path.join(outputdir,debugfile),"w")
-                    f.write(_vfc.getvalue())
-                    f.write("\n\n")
-                    f.write(_vf.getvalue())
-                    f.close()
-                except IOError,e:
-                    print "yacc: can't create '%s'" % debugfile,e
-        
-    # Made it here.   Create a parser object and set up its internal state.
-    # Set global parse() method to bound method of parser object.
-
-    p = Parser("xyzzy")
-    p.productions = Productions
-    p.errorfunc = Errorfunc
-    p.action = _lr_action
-    p.goto   = _lr_goto
-    p.method = _lr_method
-    p.require = Requires
-
-    global parse
-    parse = p.parse
-
-    global parser
-    parser = p
-
-    # Clean up all of the globals we created
-    if (not optimize):
-        yacc_cleanup()
-    return p
-
-# yacc_cleanup function.  Delete all of the global variables
-# used during table construction
-
-def yacc_cleanup():
-    global _lr_action, _lr_goto, _lr_method, _lr_goto_cache
-    del _lr_action, _lr_goto, _lr_method, _lr_goto_cache
-
-    global Productions, Prodnames, Prodmap, Terminals 
-    global Nonterminals, First, Follow, Precedence, LRitems
-    global Errorfunc, Signature, Requires
-    
-    del Productions, Prodnames, Prodmap, Terminals
-    del Nonterminals, First, Follow, Precedence, LRitems
-    del Errorfunc, Signature, Requires
-    
-    global _vf, _vfc
-    del _vf, _vfc
-    
-    
-# Stub that raises an error if parsing is attempted without first calling yacc()
-def parse(*args,**kwargs):
-    raise YaccError, "yacc: No parser built with yacc()"
-
diff --git a/chall/ply-2.2/doc/makedoc.py b/chall/ply-2.2/doc/makedoc.py
deleted file mode 100644
index 415a53a..0000000
--- a/chall/ply-2.2/doc/makedoc.py
+++ /dev/null
@@ -1,194 +0,0 @@
-#!/usr/local/bin/python
-
-###############################################################################
-# Takes a chapter as input and adds internal links and numbering to all
-# of the H1, H2, H3, H4 and H5 sections.
-#
-# Every heading HTML tag (H1, H2 etc) is given an autogenerated name to link
-# to. However, if the name is not an autogenerated name from a previous run,
-# it will be kept. If it is autogenerated, it might change on subsequent runs
-# of this program. Thus if you want to create links to one of the headings,
-# then change the heading link name to something that does not look like an
-# autogenerated link name.
-###############################################################################
-
-import sys
-import re
-import string
-
-###############################################################################
-# Functions
-###############################################################################
-
-# Regexs for <a name="..."></a>
-alink = re.compile(r"<a *name *= *\"(.*)\"></a>", re.IGNORECASE)
-heading = re.compile(r"(_nn\d)", re.IGNORECASE)
-
-def getheadingname(m):
-    autogeneratedheading = True;
-    if m.group(1) != None:
-        amatch = alink.match(m.group(1))
-        if amatch:
-            # A non-autogenerated heading - keep it
-            headingname = amatch.group(1)
-            autogeneratedheading = heading.match(headingname)
-    if autogeneratedheading:
-        # The heading name was either non-existent or autogenerated,
-        # We can create a new heading / change the existing heading
-        headingname = "%s_nn%d" % (filenamebase, nameindex)
-    return headingname
-
-###############################################################################
-# Main program
-###############################################################################
-
-if len(sys.argv) != 2:
-    print "usage: makedoc.py filename"
-    sys.exit(1)
-
-filename = sys.argv[1]
-filenamebase = string.split(filename,".")[0]
-
-section = 0
-subsection = 0
-subsubsection = 0
-subsubsubsection = 0
-nameindex = 0
-
-name = ""
-
-# Regexs for <h1>,... <h5> sections
-
-h1 = re.compile(r".*?<H1>(<a.*a>)*[\d\.\s]*(.*?)</H1>", re.IGNORECASE)
-h2 = re.compile(r".*?<H2>(<a.*a>)*[\d\.\s]*(.*?)</H2>", re.IGNORECASE)
-h3 = re.compile(r".*?<H3>(<a.*a>)*[\d\.\s]*(.*?)</H3>", re.IGNORECASE)
-h4 = re.compile(r".*?<H4>(<a.*a>)*[\d\.\s]*(.*?)</H4>", re.IGNORECASE)
-h5 = re.compile(r".*?<H5>(<a.*a>)*[\d\.\s]*(.*?)</H5>", re.IGNORECASE)
-
-data = open(filename).read()            # Read data
-open(filename+".bak","w").write(data)   # Make backup
-
-lines = data.splitlines()
-result = [ ] # This is the result of postprocessing the file
-index = "<!-- INDEX -->\n<div class=\"sectiontoc\">\n" # index contains the index for adding at the top of the file. Also printed to stdout.
-
-skip = 0
-skipspace = 0
-
-for s in lines:
-    if s == "<!-- INDEX -->":
-        if not skip:
-            result.append("@INDEX@")
-            skip = 1
-        else:
-            skip = 0
-        continue;
-    if skip:
-        continue
-
-    if not s and skipspace:
-        continue
-
-    if skipspace:
-        result.append("")
-        result.append("")
-        skipspace = 0
-    
-    m = h2.match(s)
-    if m:
-        prevheadingtext = m.group(2)
-        nameindex += 1
-        section += 1
-        headingname = getheadingname(m)
-        result.append("""<H2><a name="%s"></a>%d. %s</H2>""" % (headingname,section, prevheadingtext))
-
-        if subsubsubsection:
-            index += "</ul>\n"
-        if subsubsection:
-            index += "</ul>\n"
-        if subsection:
-            index += "</ul>\n"
-        if section == 1:
-            index += "<ul>\n"
-
-        index += """<li><a href="#%s">%s</a>\n""" % (headingname,prevheadingtext)
-        subsection = 0
-        subsubsection = 0
-        subsubsubsection = 0
-        skipspace = 1        
-        continue
-    m = h3.match(s)
-    if m:
-        prevheadingtext = m.group(2)
-        nameindex += 1
-        subsection += 1
-        headingname = getheadingname(m)
-        result.append("""<H3><a name="%s"></a>%d.%d %s</H3>""" % (headingname,section, subsection, prevheadingtext))
-
-        if subsubsubsection:
-            index += "</ul>\n"
-        if subsubsection:
-            index += "</ul>\n"
-        if subsection == 1:
-            index += "<ul>\n"
-
-        index += """<li><a href="#%s">%s</a>\n""" % (headingname,prevheadingtext)
-        subsubsection = 0
-        skipspace = 1        
-        continue
-    m = h4.match(s)
-    if m:
-        prevheadingtext = m.group(2)
-        nameindex += 1
-        subsubsection += 1
-        subsubsubsection = 0
-        headingname = getheadingname(m)
-        result.append("""<H4><a name="%s"></a>%d.%d.%d %s</H4>""" % (headingname,section, subsection, subsubsection, prevheadingtext))
-
-        if subsubsubsection:
-            index += "</ul>\n"
-        if subsubsection == 1:
-            index += "<ul>\n"
-
-        index += """<li><a href="#%s">%s</a>\n""" % (headingname,prevheadingtext)
-        skipspace = 1        
-        continue
-    m = h5.match(s)
-    if m:
-        prevheadingtext = m.group(2)
-        nameindex += 1
-        subsubsubsection += 1
-        headingname = getheadingname(m)
-        result.append("""<H5><a name="%s"></a>%d.%d.%d.%d %s</H5>""" % (headingname,section, subsection, subsubsection, subsubsubsection, prevheadingtext))
-
-        if subsubsubsection == 1:
-            index += "<ul>\n"
-
-        index += """<li><a href="#%s">%s</a>\n""" % (headingname,prevheadingtext)
-        skipspace = 1
-        continue
-    
-    result.append(s)
-
-if subsubsubsection:
-    index += "</ul>\n"
-
-if subsubsection:
-    index += "</ul>\n"
-
-if subsection:
-    index += "</ul>\n"
-
-if section:
-    index += "</ul>\n"
-
-index += "</div>\n<!-- INDEX -->\n"
-
-data = "\n".join(result)
-
-data = data.replace("@INDEX@",index) + "\n";
-
-# Write the file back out
-open(filename,"w").write(data)
-
-
diff --git a/chall/ply-2.2/doc/ply.html b/chall/ply-2.2/doc/ply.html
deleted file mode 100644
index b3219ea..0000000
--- a/chall/ply-2.2/doc/ply.html
+++ /dev/null
@@ -1,2874 +0,0 @@
-<html>
-<head>
-<title>PLY (Python Lex-Yacc)</title>
-</head>
-<body bgcolor="#ffffff">
-
-<h1>PLY (Python Lex-Yacc)</h1>
- 
-<b>
-David M. Beazley <br>
-dave@dabeaz.com<br>
-</b>
-
-<p>
-<b>PLY Version: 2.2</b>
-<p>
-
-<!-- INDEX -->
-<div class="sectiontoc">
-<ul>
-<li><a href="#ply_nn1">Introduction</a>
-<li><a href="#ply_nn2">PLY Overview</a>
-<li><a href="#ply_nn3">Lex</a>
-<ul>
-<li><a href="#ply_nn4">Lex Example</a>
-<li><a href="#ply_nn5">The tokens list</a>
-<li><a href="#ply_nn6">Specification of tokens</a>
-<li><a href="#ply_nn7">Token values</a>
-<li><a href="#ply_nn8">Discarded tokens</a>
-<li><a href="#ply_nn9">Line numbers and positional information</a>
-<li><a href="#ply_nn10">Ignored characters</a>
-<li><a href="#ply_nn11">Literal characters</a>
-<li><a href="#ply_nn12">Error handling</a>
-<li><a href="#ply_nn13">Building and using the lexer</a>
-<li><a href="#ply_nn14">The @TOKEN decorator</a>
-<li><a href="#ply_nn15">Optimized mode</a>
-<li><a href="#ply_nn16">Debugging</a>
-<li><a href="#ply_nn17">Alternative specification of lexers</a>
-<li><a href="#ply_nn18">Maintaining state</a>
-<li><a href="#ply_nn19">Duplicating lexers</a>
-<li><a href="#ply_nn20">Internal lexer state</a>
-<li><a href="#ply_nn21">Conditional lexing and start conditions</a>
-<li><a href="#ply_nn21">Miscellaneous Issues</a>
-</ul>
-<li><a href="#ply_nn22">Parsing basics</a>
-<li><a href="#ply_nn23">Yacc reference</a>
-<ul>
-<li><a href="#ply_nn24">An example</a>
-<li><a href="#ply_nn25">Combining Grammar Rule Functions</a>
-<li><a href="#ply_nn26">Character Literals</a>
-<li><a href="#ply_nn26">Empty Productions</a>
-<li><a href="#ply_nn28">Changing the starting symbol</a>
-<li><a href="#ply_nn27">Dealing With Ambiguous Grammars</a>
-<li><a href="#ply_nn28">The parser.out file</a>
-<li><a href="#ply_nn29">Syntax Error Handling</a>
-<ul>
-<li><a href="#ply_nn30">Recovery and resynchronization with error rules</a>
-<li><a href="#ply_nn31">Panic mode recovery</a>
-<li><a href="#ply_nn32">General comments on error handling</a>
-</ul>
-<li><a href="#ply_nn33">Line Number and Position Tracking</a>
-<li><a href="#ply_nn34">AST Construction</a>
-<li><a href="#ply_nn35">Embedded Actions</a>
-<li><a href="#ply_nn36">Yacc implementation notes</a>
-</ul>
-<li><a href="#ply_nn37">Parser and Lexer State Management</a>
-<li><a href="#ply_nn38">Using Python's Optimized Mode</a>
-<li><a href="#ply_nn39">Where to go from here?</a>
-</ul>
-</div>
-<!-- INDEX -->
-
-
-
-
-
-
-<H2><a name="ply_nn1"></a>1. Introduction</H2>
-
-
-PLY is a pure-Python implementation of the popular compiler
-construction tools lex and yacc. The main goal of PLY is to stay
-fairly faithful to the way in which traditional lex/yacc tools work.
-This includes supporting LALR(1) parsing as well as providing
-extensive input validation, error reporting, and diagnostics.  Thus,
-if you've used yacc in another programming language, it should be
-relatively straightforward to use PLY.  
-
-<p>
-Early versions of PLY were developed to support an Introduction to
-Compilers Course I taught in 2001 at the University of Chicago.  In this course,
-students built a fully functional compiler for a simple Pascal-like
-language.  Their compiler, implemented entirely in Python, had to
-include lexical analysis, parsing, type checking, type inference,
-nested scoping, and code generation for the SPARC processor.
-Approximately 30 different compiler implementations were completed in
-this course.  Most of PLY's interface and operation has been influenced by common
-usability problems encountered by students.
-
-<p>
-Since PLY was primarily developed as an instructional tool, you will
-find it to be fairly picky about token and grammar rule
-specification. In part, this
-added formality is meant to catch common programming mistakes made by
-novice users.  However, advanced users will also find such features to
-be useful when building complicated grammars for real programming
-languages.  It should also be noted that PLY does not provide much in
-the way of bells and whistles (e.g., automatic construction of
-abstract syntax trees, tree traversal, etc.). Nor would I consider it
-to be a parsing framework.  Instead, you will find a bare-bones, yet
-fully capable lex/yacc implementation written entirely in Python.
-
-<p>
-The rest of this document assumes that you are somewhat familar with
-parsing theory, syntax directed translation, and the use of compiler
-construction tools such as lex and yacc in other programming
-languages. If you are unfamilar with these topics, you will probably
-want to consult an introductory text such as "Compilers: Principles,
-Techniques, and Tools", by Aho, Sethi, and Ullman.  O'Reilly's "Lex
-and Yacc" by John Levine may also be handy.  In fact, the O'Reilly book can be
-used as a reference for PLY as the concepts are virtually identical.
-
-<H2><a name="ply_nn2"></a>2. PLY Overview</H2>
-
-
-PLY consists of two separate modules; <tt>lex.py</tt> and
-<tt>yacc.py</tt>, both of which are found in a Python package
-called <tt>ply</tt>. The <tt>lex.py</tt> module is used to break input text into a
-collection of tokens specified by a collection of regular expression
-rules.  <tt>yacc.py</tt> is used to recognize language syntax that has
-been specified in the form of a context free grammar. <tt>yacc.py</tt> uses LR parsing and generates its parsing tables
-using either the LALR(1) (the default) or SLR table generation algorithms.
-
-<p>
-The two tools are meant to work together.  Specifically,
-<tt>lex.py</tt> provides an external interface in the form of a
-<tt>token()</tt> function that returns the next valid token on the
-input stream.  <tt>yacc.py</tt> calls this repeatedly to retrieve
-tokens and invoke grammar rules.  The output of <tt>yacc.py</tt> is
-often an Abstract Syntax Tree (AST).  However, this is entirely up to
-the user.  If desired, <tt>yacc.py</tt> can also be used to implement
-simple one-pass compilers.  
-
-<p>
-Like its Unix counterpart, <tt>yacc.py</tt> provides most of the
-features you expect including extensive error checking, grammar
-validation, support for empty productions, error tokens, and ambiguity
-resolution via precedence rules.  In fact, everything that is possible in traditional yacc 
-should be supported in PLY.
-
-<p>
-The primary difference between
-<tt>yacc.py</tt> and Unix <tt>yacc</tt> is that <tt>yacc.py</tt> 
-doesn't involve a separate code-generation process. 
-Instead, PLY relies on reflection (introspection)
-to build its lexers and parsers.  Unlike traditional lex/yacc which
-require a special input file that is converted into a separate source
-file, the specifications given to PLY <em>are</em> valid Python
-programs.  This means that there are no extra source files nor is
-there a special compiler construction step (e.g., running yacc to
-generate Python code for the compiler).  Since the generation of the
-parsing tables is relatively expensive, PLY caches the results and
-saves them to a file.  If no changes are detected in the input source,
-the tables are read from the cache. Otherwise, they are regenerated.
-
-<H2><a name="ply_nn3"></a>3. Lex</H2>
-
-
-<tt>lex.py</tt> is used to tokenize an input string.  For example, suppose
-you're writing a programming language and a user supplied the following input string:
-
-<blockquote>
-<pre>
-x = 3 + 42 * (s - t)
-</pre>
-</blockquote>
-
-A tokenizer splits the string into individual tokens
-
-<blockquote>
-<pre>
-'x','=', '3', '+', '42', '*', '(', 's', '-', 't', ')'
-</pre>
-</blockquote>
-
-Tokens are usually given names to indicate what they are. For example:
-
-<blockquote>
-<pre>
-'ID','EQUALS','NUMBER','PLUS','NUMBER','TIMES',
-'LPAREN','ID','MINUS','ID','RPAREN'
-</pre>
-</blockquote>
-
-More specifically, the input is broken into pairs of token types and values.  For example:
-
-<blockquote>
-<pre>
-('ID','x'), ('EQUALS','='), ('NUMBER','3'), 
-('PLUS','+'), ('NUMBER','42), ('TIMES','*'),
-('LPAREN','('), ('ID','s'), ('MINUS','-'),
-('ID','t'), ('RPAREN',')'
-</pre>
-</blockquote>
-
-The identification of tokens is typically done by writing a series of regular expression
-rules.  The next section shows how this is done using <tt>lex.py</tt>.
-
-<H3><a name="ply_nn4"></a>3.1 Lex Example</H3>
-
-
-The following example shows how <tt>lex.py</tt> is used to write a simple tokenizer.
-
-<blockquote>
-<pre>
-# ------------------------------------------------------------
-# calclex.py
-#
-# tokenizer for a simple expression evaluator for
-# numbers and +,-,*,/
-# ------------------------------------------------------------
-import ply.lex as lex
-
-# List of token names.   This is always required
-tokens = (
-   'NUMBER',
-   'PLUS',
-   'MINUS',
-   'TIMES',
-   'DIVIDE',
-   'LPAREN',
-   'RPAREN',
-)
-
-# Regular expression rules for simple tokens
-t_PLUS    = r'\+'
-t_MINUS   = r'-'
-t_TIMES   = r'\*'
-t_DIVIDE  = r'/'
-t_LPAREN  = r'\('
-t_RPAREN  = r'\)'
-
-# A regular expression rule with some action code
-def t_NUMBER(t):
-    r'\d+'
-    try:
-         t.value = int(t.value)    
-    except ValueError:
-         print "Line %d: Number %s is too large!" % (t.lineno,t.value)
-	 t.value = 0
-    return t
-
-# Define a rule so we can track line numbers
-def t_newline(t):
-    r'\n+'
-    t.lexer.lineno += len(t.value)
-
-# A string containing ignored characters (spaces and tabs)
-t_ignore  = ' \t'
-
-# Error handling rule
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-
-# Build the lexer
-lex.lex()
-
-</pre>
-</blockquote>
-To use the lexer, you first need to feed it some input text using its <tt>input()</tt> method.  After that, repeated calls to <tt>token()</tt> produce tokens.   The following code shows how this works:
-
-<blockquote>
-<pre>
-
-# Test it out
-data = '''
-3 + 4 * 10
-  + -20 *2
-'''
-
-# Give the lexer some input
-lex.input(data)
-
-# Tokenize
-while 1:
-    tok = lex.token()
-    if not tok: break      # No more input
-    print tok
-</pre>
-</blockquote>
-
-When executed, the example will produce the following output:
-
-<blockquote>
-<pre>
-$ python example.py
-LexToken(NUMBER,3,2,1)
-LexToken(PLUS,'+',2,3)
-LexToken(NUMBER,4,2,5)
-LexToken(TIMES,'*',2,7)
-LexToken(NUMBER,10,2,10)
-LexToken(PLUS,'+',3,14)
-LexToken(MINUS,'-',3,16)
-LexToken(NUMBER,20,3,18)
-LexToken(TIMES,'*',3,20)
-LexToken(NUMBER,2,3,21)
-</pre>
-</blockquote>
-
-The tokens returned by <tt>lex.token()</tt> are instances
-of <tt>LexToken</tt>.  This object has
-attributes <tt>tok.type</tt>, <tt>tok.value</tt>,
-<tt>tok.lineno</tt>, and <tt>tok.lexpos</tt>.  The following code shows an example of
-accessing these attributes:
-
-<blockquote>
-<pre>
-# Tokenize
-while 1:
-    tok = lex.token()
-    if not tok: break      # No more input
-    print tok.type, tok.value, tok.line, tok.lexpos
-</pre>
-</blockquote>
-
-The <tt>tok.type</tt> and <tt>tok.value</tt> attributes contain the
-type and value of the token itself. 
-<tt>tok.line</tt> and <tt>tok.lexpos</tt> contain information about
-the location of the token.  <tt>tok.lexpos</tt> is the index of the
-token relative to the start of the input text.
-
-<H3><a name="ply_nn5"></a>3.2 The tokens list</H3>
-
-
-All lexers must provide a list <tt>tokens</tt> that defines all of the possible token
-names that can be produced by the lexer.  This list is always required
-and is used to perform a variety of validation checks.  The tokens list is also used by the
-<tt>yacc.py</tt> module to identify terminals.
-
-<p>
-In the example, the following code specified the token names:
-
-<blockquote>
-<pre>
-tokens = (
-   'NUMBER',
-   'PLUS',
-   'MINUS',
-   'TIMES',
-   'DIVIDE',
-   'LPAREN',
-   'RPAREN',
-)
-</pre>
-</blockquote>
-
-<H3><a name="ply_nn6"></a>3.3 Specification of tokens</H3>
-
-
-Each token is specified by writing a regular expression rule.  Each of these rules are
-are defined by  making declarations with a special prefix <tt>t_</tt> to indicate that it
-defines a token.  For simple tokens, the regular expression can
-be specified as strings such as this (note: Python raw strings are used since they are the
-most convenient way to write regular expression strings):
-
-<blockquote>
-<pre>
-t_PLUS = r'\+'
-</pre>
-</blockquote>
-
-In this case, the name following the <tt>t_</tt> must exactly match one of the
-names supplied in <tt>tokens</tt>.   If some kind of action needs to be performed,
-a token rule can be specified as a function.  For example, this rule matches numbers and
-converts the string into a Python integer.
-
-<blockquote>
-<pre>
-def t_NUMBER(t):
-    r'\d+'
-    try:
-         t.value = int(t.value)
-    except ValueError:
-         print "Number %s is too large!" % t.value
-	 t.value = 0
-    return t
-</pre>
-</blockquote>
-
-When a function is used, the regular expression rule is specified in the function documentation string. 
-The function always takes a single argument which is an instance of 
-<tt>LexToken</tt>.   This object has attributes of <tt>t.type</tt> which is the token type (as a string),
-<tt>t.value</tt> which is the lexeme (the actual text matched), <tt>t.lineno</tt> which is the current line number, and <tt>t.lexpos</tt> which
-is the position of the token relative to the beginning of the input text.
-By default, <tt>t.type</tt> is set to the name following the <tt>t_</tt> prefix.  The action
-function can modify the contents of the <tt>LexToken</tt> object as appropriate.  However, 
-when it is done, the resulting token should be returned.  If no value is returned by the action
-function, the token is simply discarded and the next token read.
-
-<p>
-Internally, <tt>lex.py</tt> uses the <tt>re</tt> module to do its patten matching.  When building the master regular expression,
-rules are added in the following order:
-<p>
-<ol>
-<li>All tokens defined by functions are added in the same order as they appear in the lexer file.
-<li>Tokens defined by strings are added next by sorting them in order of decreasing regular expression length (longer expressions
-are added first).
-</ol>
-<p>
-Without this ordering, it can be difficult to correctly match certain types of tokens.  For example, if you 
-wanted to have separate tokens for "=" and "==", you need to make sure that "==" is checked first.  By sorting regular
-expressions in order of decreasing length, this problem is solved for rules defined as strings.  For functions,
-the order can be explicitly controlled since rules appearing first are checked first.
-
-<p>
-To handle reserved words, it is usually easier to just match an identifier and do a special name lookup in a function
-like this:
-
-<blockquote>
-<pre>
-reserved = {
-   'if' : 'IF',
-   'then' : 'THEN',
-   'else' : 'ELSE',
-   'while' : 'WHILE',
-   ...
-}
-
-def t_ID(t):
-    r'[a-zA-Z_][a-zA-Z_0-9]*'
-    t.type = reserved.get(t.value,'ID')    # Check for reserved words
-    return t
-</pre>
-</blockquote>
-
-This approach greatly reduces the number of regular expression rules and is likely to make things a little faster.
-
-<p>
-<b>Note:</b> You should avoid writing individual rules for reserved words.  For example, if you write rules like this,
-
-<blockquote>
-<pre>
-t_FOR   = r'for'
-t_PRINT = r'print'
-</pre>
-</blockquote>
-
-those rules will be triggered for identifiers that include those words as a prefix such as "forget" or "printed".  This is probably not
-what you want.
-
-<H3><a name="ply_nn7"></a>3.4 Token values</H3>
-
-
-When tokens are returned by lex, they have a value that is stored in the <tt>value</tt> attribute.    Normally, the value is the text
-that was matched.   However, the value can be assigned to any Python object.   For instance, when lexing identifiers, you may
-want to return both the identifier name and information from some sort of symbol table.  To do this, you might write a rule like this:
-
-<blockquote>
-<pre>
-def t_ID(t):
-    ...
-    # Look up symbol table information and return a tuple
-    t.value = (t.value, symbol_lookup(t.value))
-    ...
-    return t
-</pre>
-</blockquote>
-
-It is important to note that storing data in other attribute names is <em>not</em> recommended.  The <tt>yacc.py</tt> module only exposes the
-contents of the <tt>value</tt> attribute.  Thus, accessing other attributes may  be unnecessarily awkward.
-
-<H3><a name="ply_nn8"></a>3.5 Discarded tokens</H3>
-
-
-To discard a token, such as a comment, simply define a token rule that returns no value.  For example:
-
-<blockquote>
-<pre>
-def t_COMMENT(t):
-    r'\#.*'
-    pass
-    # No return value. Token discarded
-</pre>
-</blockquote>
-
-Alternatively, you can include the prefix "ignore_" in the token declaration to force a token to be ignored.  For example:
-
-<blockquote>
-<pre>
-t_ignore_COMMENT = r'\#.*'
-</pre>
-</blockquote>
-
-Be advised that if you are ignoring many different kinds of text, you may still want to use functions since these provide more precise
-control over the order in which regular expressions are matched (i.e., functions are matched in order of specification whereas strings are
-sorted by regular expression length).
-
-<H3><a name="ply_nn9"></a>3.6 Line numbers and positional information</H3>
-
-
-<p>By default, <tt>lex.py</tt> knows nothing about line numbers.  This is because <tt>lex.py</tt> doesn't know anything
-about what constitutes a "line" of input (e.g., the newline character or even if the input is textual data).
-To update this information, you need to write a special rule.  In the example, the <tt>t_newline()</tt> rule shows how to do this.
-
-<blockquote>
-<pre>
-# Define a rule so we can track line numbers
-def t_newline(t):
-    r'\n+'
-    t.lexer.lineno += len(t.value)
-</pre>
-</blockquote>
-Within the rule, the <tt>lineno</tt> attribute of the underlying lexer <tt>t.lexer</tt> is updated.
-After the line number is updated, the token is simply discarded since nothing is returned.
-
-<p>
-<tt>lex.py</tt> does not perform and kind of automatic column tracking.  However, it does record positional
-information related to each token in the <tt>lexpos</tt> attribute.   Using this, it is usually possible to compute 
-column information as a separate step.   For instance, just count backwards until you reach a newline.
-
-<blockquote>
-<pre>
-# Compute column. 
-#     input is the input text string
-#     token is a token instance
-def find_column(input,token):
-    i = token.lexpos
-    while i > 0:
-        if input[i] == '\n': break
-        i -= 1
-    column = (token.lexpos - i)+1
-    return column
-</pre>
-</blockquote>
-
-Since column information is often only useful in the context of error handling, calculating the column
-position can be performed when needed as opposed to doing it for each token.
-
-<H3><a name="ply_nn10"></a>3.7 Ignored characters</H3>
-
-
-<p>
-The special <tt>t_ignore</tt> rule is reserved by <tt>lex.py</tt> for characters
-that should be completely ignored in the input stream. 
-Usually this is used to skip over whitespace and other non-essential characters. 
-Although it is possible to define a regular expression rule for whitespace in a manner
-similar to <tt>t_newline()</tt>, the use of <tt>t_ignore</tt> provides substantially better
-lexing performance because it is handled as a special case and is checked in a much
-more efficient manner than the normal regular expression rules.
-
-<H3><a name="ply_nn11"></a>3.8 Literal characters</H3>
-
-
-<p>
-Literal characters can be specified by defining a variable <tt>literals</tt> in your lexing module.  For example:
-
-<blockquote>
-<pre>
-literals = [ '+','-','*','/' ]
-</pre>
-</blockquote>
-
-or alternatively
-
-<blockquote>
-<pre>
-literals = "+-*/"
-</pre>
-</blockquote>
-
-A literal character is simply a single character that is returned "as is" when encountered by the lexer.  Literals are checked
-after all of the defined regular expression rules.  Thus, if a rule starts with one of the literal characters, it will always 
-take precedence.
-<p>
-When a literal token is returned, both its <tt>type</tt> and <tt>value</tt> attributes are set to the character itself. For example, <tt>'+'</tt>.
-
-<H3><a name="ply_nn12"></a>3.9 Error handling</H3>
-
-
-<p>
-Finally, the <tt>t_error()</tt>
-function is used to handle lexing errors that occur when illegal
-characters are detected.  In this case, the <tt>t.value</tt> attribute contains the
-rest of the input string that has not been tokenized.  In the example, the error function
-was defined as follows:
-
-<blockquote>
-<pre>
-# Error handling rule
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-</pre>
-</blockquote>
-
-In this case, we simply print the offending character and skip ahead one character by calling <tt>t.lexer.skip(1)</tt>.
-
-<H3><a name="ply_nn13"></a>3.10 Building and using the lexer</H3>
-
-
-<p>
-To build the lexer, the function <tt>lex.lex()</tt> is used.  This function
-uses Python reflection (or introspection) to read the the regular expression rules
-out of the calling context and build the lexer. Once the lexer has been built, two functions can
-be used to control the lexer.
-
-<ul>
-<li><tt>lex.input(data)</tt>.   Reset the lexer and store a new input string.
-<li><tt>lex.token()</tt>.  Return the next token.  Returns a special <tt>LexToken</tt> instance on success or
-None if the end of the input text has been reached.
-</ul>
-
-If desired, the lexer can also be used as an object.  The <tt>lex()</tt> returns a <tt>Lexer</tt> object that
-can be used for this purpose.  For example:
-
-<blockquote>
-<pre>
-lexer = lex.lex()
-lexer.input(sometext)
-while 1:
-    tok = lexer.token()
-    if not tok: break
-    print tok
-</pre>
-</blockquote>
-
-<p>
-This latter technique should be used if you intend to use multiple lexers in your application.  Simply define each
-lexer in its own module and use the object returned by <tt>lex()</tt> as appropriate.
-
-<p>
-Note: The global functions <tt>lex.input()</tt> and <tt>lex.token()</tt> are bound to the <tt>input()</tt> 
-and <tt>token()</tt> methods of the last lexer created by the lex module. 
-
-<H3><a name="ply_nn14"></a>3.11 The @TOKEN decorator</H3>
-
-
-In some applications, you may want to define build tokens from as a series of
-more complex regular expression rules.  For example:
-
-<blockquote>
-<pre>
-digit            = r'([0-9])'
-nondigit         = r'([_A-Za-z])'
-identifier       = r'(' + nondigit + r'(' + digit + r'|' + nondigit + r')*)'        
-
-def t_ID(t):
-    # want docstring to be identifier above. ?????
-    ...
-</pre>
-</blockquote>
-
-In this case, we want the regular expression rule for <tt>ID</tt> to be one of the variables above. However, there is no
-way to directly specify this using a normal documentation string.   To solve this problem, you can use the <tt>@TOKEN</tt>
-decorator.  For example:
-
-<blockquote>
-<pre>
-from ply.lex import TOKEN
-
-@TOKEN(identifier)
-def t_ID(t):
-    ...
-</pre>
-</blockquote>
-
-This will attach <tt>identifier</tt> to the docstring for <tt>t_ID()</tt> allowing <tt>lex.py</tt> to work normally.  An alternative
-approach this problem is to set the docstring directly like this:
-
-<blockquote>
-<pre>
-def t_ID(t):
-    ...
-
-t_ID.__doc__ = identifier
-</pre>
-</blockquote>
-
-<b>NOTE:</b> Use of <tt>@TOKEN</tt> requires Python-2.4 or newer.  If you're concerned about backwards compatibility with older
-versions of Python, use the alternative approach of setting the docstring directly.
-
-<H3><a name="ply_nn15"></a>3.12 Optimized mode</H3>
-
-
-For improved performance, it may be desirable to use Python's
-optimized mode (e.g., running Python with the <tt>-O</tt>
-option). However, doing so causes Python to ignore documentation
-strings.  This presents special problems for <tt>lex.py</tt>.  To
-handle this case, you can create your lexer using
-the <tt>optimize</tt> option as follows:
-
-<blockquote>
-<pre>
-lexer = lex.lex(optimize=1)
-</pre>
-</blockquote>
-
-Next, run Python in its normal operating mode.  When you do
-this, <tt>lex.py</tt> will write a file called <tt>lextab.py</tt> to
-the current directory.  This file contains all of the regular
-expression rules and tables used during lexing.  On subsequent
-executions,
-<tt>lextab.py</tt> will simply be imported to build the lexer.  This
-approach substantially improves the startup time of the lexer and it
-works in Python's optimized mode.
-
-<p>
-To change the name of the lexer-generated file, use the <tt>lextab</tt> keyword argument.  For example:
-
-<blockquote>
-<pre>
-lexer = lex.lex(optimize=1,lextab="footab")
-</pre>
-</blockquote>
-
-When running in optimized mode, it is important to note that lex disables most error checking.  Thus, this is really only recommended
-if you're sure everything is working correctly and you're ready to start releasing production code.
-
-<H3><a name="ply_nn16"></a>3.13 Debugging</H3>
-
-
-For the purpose of debugging, you can run <tt>lex()</tt> in a debugging mode as follows:
-
-<blockquote>
-<pre>
-lexer = lex.lex(debug=1)
-</pre>
-</blockquote>
-
-This will result in a large amount of debugging information to be printed including all of the added rules and the master
-regular expressions.
-
-In addition, <tt>lex.py</tt> comes with a simple main function which
-will either tokenize input read from standard input or from a file specified
-on the command line. To use it, simply put this in your lexer:
-
-<blockquote>
-<pre>
-if __name__ == '__main__':
-     lex.runmain()
-</pre>
-</blockquote>
-
-<H3><a name="ply_nn17"></a>3.14 Alternative specification of lexers</H3>
-
-
-As shown in the example, lexers are specified all within one Python module.   If you want to
-put token rules in a different module from the one in which you invoke <tt>lex()</tt>, use the
-<tt>module</tt> keyword argument.
-
-<p>
-For example, you might have a dedicated module that just contains
-the token rules:
-
-<blockquote>
-<pre>
-# module: tokrules.py
-# This module just contains the lexing rules
-
-# List of token names.   This is always required
-tokens = (
-   'NUMBER',
-   'PLUS',
-   'MINUS',
-   'TIMES',
-   'DIVIDE',
-   'LPAREN',
-   'RPAREN',
-)
-
-# Regular expression rules for simple tokens
-t_PLUS    = r'\+'
-t_MINUS   = r'-'
-t_TIMES   = r'\*'
-t_DIVIDE  = r'/'
-t_LPAREN  = r'\('
-t_RPAREN  = r'\)'
-
-# A regular expression rule with some action code
-def t_NUMBER(t):
-    r'\d+'
-    try:
-         t.value = int(t.value)    
-    except ValueError:
-         print "Line %d: Number %s is too large!" % (t.lineno,t.value)
-	 t.value = 0
-    return t
-
-# Define a rule so we can track line numbers
-def t_newline(t):
-    r'\n+'
-    t.lexer.lineno += len(t.value)
-
-# A string containing ignored characters (spaces and tabs)
-t_ignore  = ' \t'
-
-# Error handling rule
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-</pre>
-</blockquote>
-
-Now, if you wanted to build a tokenizer from these rules from within a different module, you would do the following (shown for Python interactive mode):
-
-<blockquote>
-<pre>
->>> import tokrules
->>> <b>lexer = lex.lex(module=tokrules)</b>
->>> lexer.input("3 + 4")
->>> lexer.token()
-LexToken(NUMBER,3,1,1,0)
->>> lexer.token()
-LexToken(PLUS,'+',1,2)
->>> lexer.token()
-LexToken(NUMBER,4,1,4)
->>> lexer.token()
-None
->>>
-</pre>
-</blockquote>
-
-The <tt>object</tt> option can be used to define lexers as a class instead of a module.  For example:
-
-<blockquote>
-<pre>
-import ply.lex as lex
-
-class MyLexer:
-    # List of token names.   This is always required
-    tokens = (
-       'NUMBER',
-       'PLUS',
-       'MINUS',
-       'TIMES',
-       'DIVIDE',
-       'LPAREN',
-       'RPAREN',
-    )
-
-    # Regular expression rules for simple tokens
-    t_PLUS    = r'\+'
-    t_MINUS   = r'-'
-    t_TIMES   = r'\*'
-    t_DIVIDE  = r'/'
-    t_LPAREN  = r'\('
-    t_RPAREN  = r'\)'
-
-    # A regular expression rule with some action code
-    # Note addition of self parameter since we're in a class
-    def t_NUMBER(self,t):
-        r'\d+'
-        try:
-             t.value = int(t.value)    
-        except ValueError:
-             print "Line %d: Number %s is too large!" % (t.lineno,t.value)
-             t.value = 0
-        return t
-
-    # Define a rule so we can track line numbers
-    def t_newline(self,t):
-        r'\n+'
-        t.lexer.lineno += len(t.value)
-
-    # A string containing ignored characters (spaces and tabs)
-    t_ignore  = ' \t'
-
-    # Error handling rule
-    def t_error(self,t):
-        print "Illegal character '%s'" % t.value[0]
-        t.lexer.skip(1)
-
-    <b># Build the lexer
-    def build(self,**kwargs):
-        self.lexer = lex.lex(object=self, **kwargs)</b>
-    
-    # Test it output
-    def test(self,data):
-        self.lexer.input(data)
-        while 1:
-             tok = lexer.token()
-             if not tok: break
-             print tok
-
-# Build the lexer and try it out
-m = MyLexer()
-m.build()           # Build the lexer
-m.test("3 + 4")     # Test it
-</pre>
-</blockquote>
-
-For reasons that are subtle, you should <em>NOT</em> invoke <tt>lex.lex()</tt> inside the <tt>__init__()</tt> method of your class.  If you
-do, it may cause bizarre behavior if someone tries to duplicate a lexer object.  Keep reading.
-
-<H3><a name="ply_nn18"></a>3.15 Maintaining state</H3>
-
-
-In your lexer, you may want to maintain a variety of state information.  This might include mode settings, symbol tables, and other details.  There are a few
-different ways to handle this situation.  First, you could just keep some global variables:
-
-<blockquote>
-<pre>
-num_count = 0
-def t_NUMBER(t):
-    r'\d+'
-    global num_count
-    num_count += 1
-    try:
-         t.value = int(t.value)    
-    except ValueError:
-         print "Line %d: Number %s is too large!" % (t.lineno,t.value)
-	 t.value = 0
-    return t
-</pre>
-</blockquote>
-
-Alternatively, you can store this information inside the Lexer object created by <tt>lex()</tt>.  To this, you can use the <tt>lexer</tt> attribute
-of tokens passed to the various rules. For example:
-
-<blockquote>
-<pre>
-def t_NUMBER(t):
-    r'\d+'
-    t.lexer.num_count += 1     # Note use of lexer attribute
-    try:
-         t.value = int(t.value)    
-    except ValueError:
-         print "Line %d: Number %s is too large!" % (t.lineno,t.value)
-	 t.value = 0
-    return t
-
-lexer = lex.lex()
-lexer.num_count = 0            # Set the initial count
-</pre>
-</blockquote>
-
-This latter approach has the advantage of storing information inside
-the lexer itself---something that may be useful if multiple instances
-of the same lexer have been created.  However, it may also feel kind
-of "hacky" to the purists.  Just to put their mind at some ease, all
-internal attributes of the lexer (with the exception of <tt>lineno</tt>) have names that are prefixed
-by <tt>lex</tt> (e.g., <tt>lexdata</tt>,<tt>lexpos</tt>, etc.).  Thus,
-it should be perfectly safe to store attributes in the lexer that
-don't have names starting with that prefix.
-
-<p>
-A third approach is to define the lexer as a class as shown in the previous example:
-
-<blockquote>
-<pre>
-class MyLexer:
-    ...
-    def t_NUMBER(self,t):
-        r'\d+'
-        self.num_count += 1
-        try:
-             t.value = int(t.value)    
-        except ValueError:
-             print "Line %d: Number %s is too large!" % (t.lineno,t.value)
-             t.value = 0
-        return t
-
-    def build(self, **kwargs):
-        self.lexer = lex.lex(object=self,**kwargs)
-
-    def __init__(self):
-        self.num_count = 0
-
-# Create a lexer 
-m = MyLexer()
-lexer = lex.lex(object=m)
-</pre>
-</blockquote>
-
-The class approach may be the easiest to manage if your application is going to be creating multiple instances of the same lexer and
-you need to manage a lot of state.  
-
-<H3><a name="ply_nn19"></a>3.16 Duplicating lexers</H3>
-
-
-<b>NOTE: I am thinking about deprecating this feature.  Post comments on <a href="http://groups.google.com/group/ply-hack">ply-hack@googlegroups.com</a> or send me a private email at dave@dabeaz.com.</b>
-
-<p>
-If necessary, a lexer object can be quickly duplicated by invoking its <tt>clone()</tt> method.  For example:
-
-<blockquote>
-<pre>
-lexer = lex.lex()
-...
-newlexer = lexer.clone()
-</pre>
-</blockquote>
-
-When a lexer is cloned, the copy is identical to the original lexer,
-including any input text. However, once created, different text can be
-fed to the clone which can be used independently.  This capability may
-be useful in situations when you are writing a parser/compiler that
-involves recursive or reentrant processing.  For instance, if you
-needed to scan ahead in the input for some reason, you could create a
-clone and use it to look ahead.
-
-<p>
-The advantage of using <tt>clone()</tt> instead of reinvoking <tt>lex()</tt> is
-that it is significantly faster.  Namely, it is not necessary to re-examine all of the 
-token rules, build a regular expression, and construct internal tables.  All of this
-information can simply be reused in the new lexer.
-
-<p>
-Special considerations need to be made when cloning a lexer that is defined as a class.  Previous sections
-showed an example of a class <tt>MyLexer</tt>.  If you have the following code:
-
-<blockquote>
-<pre>
-m = MyLexer()
-a = lex.lex(object=m)      # Create a lexer
-
-b = a.clone()              # Clone the lexer
-</pre>
-</blockquote>
-
-Then both <tt>a</tt> and <tt>b</tt> are going to be bound to the same
-object <tt>m</tt>.  If the object <tt>m</tt> contains internal state
-related to lexing, this sharing may lead to quite a bit of confusion. To fix this,
-the <tt>clone()</tt> method accepts an optional argument that can be used to supply a new object.  This
-can be used to clone the lexer and bind it to a new instance.  For example:
-
-<blockquote>
-<pre>
-m = MyLexer()              # Create a lexer
-a = lex.lex(object=m)
-
-# Create a clone 
-n = MyLexer()              # New instance of MyLexer
-b = a.clone(n)             # New lexer bound to n
-</pre>
-</blockquote>
-
-It may make sense to encapsulate all of this inside a method:
-
-<blockquote>
-<pre>
-class MyLexer:
-     ...
-     def clone(self):
-         c = MyLexer()        # Create a new instance of myself
-         # Copy attributes from self to c as appropriate
-         ...
-         # Clone the lexer
-         c.lexer = self.lexer.clone(c)
-         return c
-</pre>
-</blockquote>
-
-The fact that a new instance of <tt>MyLexer</tt> may be created while cloning a lexer is the reason why you should never
-invoke <tt>lex.lex()</tt> inside <tt>__init__()</tt>.  If you do, the lexer will be rebuilt from scratch and you lose
-all of the performance benefits of using <tt>clone()</tt> in the first place.
-
-<H3><a name="ply_nn20"></a>3.17 Internal lexer state</H3>
-
-
-A Lexer object <tt>lexer</tt> has a number of internal attributes that may be useful in certain
-situations. 
-
-<p>
-<tt>lexer.lexpos</tt>
-<blockquote>
-This attribute is an integer that contains the current position within the input text.  If you modify
-the value, it will change the result of the next call to <tt>token()</tt>.  Within token rule functions, this points
-to the first character <em>after</em> the matched text.  If the value is modified within a rule, the next returned token will be
-matched at the new position.
-</blockquote>
-
-<p>
-<tt>lexer.lineno</tt>
-<blockquote>
-The current value of the line number attribute stored in the lexer.  This can be modified as needed to
-change the line number.
-</blockquote>
-
-<p>
-<tt>lexer.lexdata</tt>
-<blockquote>
-The current input text stored in the lexer.  This is the string passed with the <tt>input()</tt> method. It
-would probably be a bad idea to modify this unless you really know what you're doing.
-</blockquote>
-
-<P>
-<tt>lexer.lexmatch</tt>
-<blockquote>
-This is the raw <tt>Match</tt> object returned by the Python <tt>re.match()</tt> function (used internally by PLY) for the
-current token.  If you have written a regular expression that contains named groups, you can use this to retrieve those values.
-</blockquote>
-
-<H3><a name="ply_nn21"></a>3.18 Conditional lexing and start conditions</H3>
-
-
-In advanced parsing applications, it may be useful to have different
-lexing states. For instance, you may want the occurrence of a certain
-token or syntactic construct to trigger a different kind of lexing.
-PLY supports a feature that allows the underlying lexer to be put into
-a series of different states.  Each state can have its own tokens,
-lexing rules, and so forth.  The implementation is based largely on
-the "start condition" feature of GNU flex.  Details of this can be found
-at <a
-href="http://www.gnu.org/software/flex/manual/html_chapter/flex_11.html">http://www.gnu.org/software/flex/manual/html_chapter/flex_11.html.</a>.
-
-<p>
-To define a new lexing state, it must first be declared.  This is done by including a "states" declaration in your
-lex file.  For example:
-
-<blockquote>
-<pre>
-states = (
-   ('foo','exclusive'),
-   ('bar','inclusive'),
-)
-</pre>
-</blockquote>
-
-This declaration declares two states, <tt>'foo'</tt>
-and <tt>'bar'</tt>.  States may be of two types; <tt>'exclusive'</tt>
-and <tt>'inclusive'</tt>.  An exclusive state completely overrides the
-default behavior of the lexer.  That is, lex will only return tokens
-and apply rules defined specifically for that state.  An inclusive
-state adds additional tokens and rules to the default set of rules.
-Thus, lex will return both the tokens defined by default in addition
-to those defined for the inclusive state.
-
-<p>
-Once a state has been declared, tokens and rules are declared by including the
-state name in token/rule declaration.  For example:
-
-<blockquote>
-<pre>
-t_foo_NUMBER = r'\d+'                      # Token 'NUMBER' in state 'foo'        
-t_bar_ID     = r'[a-zA-Z_][a-zA-Z0-9_]*'   # Token 'ID' in state 'bar'
-
-def t_foo_newline(t):
-    r'\n'
-    t.lexer.lineno += 1
-</pre>
-</blockquote>
-
-A token can be declared in multiple states by including multiple state names in the declaration. For example:
-
-<blockquote>
-<pre>
-t_foo_bar_NUMBER = r'\d+'         # Defines token 'NUMBER' in both state 'foo' and 'bar'
-</pre>
-</blockquote>
-
-Alternative, a token can be declared in all states using the 'ANY' in the name.
-
-<blockquote>
-<pre>
-t_ANY_NUMBER = r'\d+'         # Defines a token 'NUMBER' in all states
-</pre>
-</blockquote>
-
-If no state name is supplied, as is normally the case, the token is associated with a special state <tt>'INITIAL'</tt>.  For example,
-these two declarations are identical:
-
-<blockquote>
-<pre>
-t_NUMBER = r'\d+'
-t_INITIAL_NUMBER = r'\d+'
-</pre>
-</blockquote>
-
-<p>
-States are also associated with the special <tt>t_ignore</tt> and <tt>t_error()</tt> declarations.  For example, if a state treats
-these differently, you can declare:
-
-<blockquote>
-<pre>
-t_foo_ignore = " \t\n"       # Ignored characters for state 'foo'
-
-def t_bar_error(t):          # Special error handler for state 'bar'
-    pass 
-</pre>
-</blockquote>
-
-By default, lexing operates in the <tt>'INITIAL'</tt> state.  This state includes all of the normally defined tokens. 
-For users who aren't using different states, this fact is completely transparent.   If, during lexing or parsing, you want to change
-the lexing state, use the <tt>begin()</tt> method.   For example:
-
-<blockquote>
-<pre>
-def t_begin_foo(t):
-    r'start_foo'
-    t.lexer.begin('foo')             # Starts 'foo' state
-</pre>
-</blockquote>
-
-To get out of a state, you use <tt>begin()</tt> to switch back to the initial state.  For example:
-
-<blockquote>
-<pre>
-def t_foo_end(t):
-    r'end_foo'
-    t.lexer.begin('INITIAL')        # Back to the initial state
-</pre>
-</blockquote>
-
-The management of states can also be done with a stack.  For example:
-
-<blockquote>
-<pre>
-def t_begin_foo(t):
-    r'start_foo'
-    t.lexer.push_state('foo')             # Starts 'foo' state
-
-def t_foo_end(t):
-    r'end_foo'
-    t.lexer.pop_state()                   # Back to the previous state
-</pre>
-</blockquote>
-
-<p>
-The use of a stack would be useful in situations where there are many ways of entering a new lexing state and you merely want to go back
-to the previous state afterwards.
-
-<P>
-An example might help clarify.  Suppose you were writing a parser and you wanted to grab sections of arbitrary C code enclosed by
-curly braces.  That is, whenever you encounter a starting brace '{', you want to read all of the enclosed code up to the ending brace '}' 
-and return it as a string.   Doing this with a normal regular expression rule is nearly (if not actually) impossible.  This is because braces can
-be nested and can be included in comments and strings.  Thus, simply matching up to the first matching '}' character isn't good enough.  Here is how
-you might use lexer states to do this:
-
-<blockquote>
-<pre>
-# Declare the state
-states = (
-  ('ccode','exclusive'),
-)
-
-# Match the first {. Enter ccode state.
-def t_ccode(t):
-    r'\{'
-    t.lexer.code_start = t.lexer.lexpos        # Record the starting position
-    t.lexer.level = 1                          # Initial brace level
-    t.lexer.begin('ccode')                     # Enter 'ccode' state
-
-# Rules for the ccode state
-def t_ccode_lbrace(t):     
-    r'\{'
-    t.lexer.level +=1                
-
-def t_ccode_rbrace(t):
-    r'\}'
-    t.lexer.level -=1
-
-    # If closing brace, return the code fragment
-    if t.lexer.level == 0:
-         t.value = t.lexer.lexdata[t.lexer.code_start:t.lexer.lexpos+1]
-         t.type = "CCODE"
-         t.lexer.lineno += t.value.count('\n')
-         t.lexer.begin('INITIAL')           
-         return t
-
-# C or C++ comment (ignore)    
-def t_ccode_comment(t):
-    r'(/\*(.|\n)*?*/)|(//.*)'
-    pass
-
-# C string
-def t_ccode_string(t):
-   r'\"([^\\\n]|(\\.))*?\"'
-
-# C character literal
-def t_ccode_char(t):
-   r'\'([^\\\n]|(\\.))*?\''
-
-# Any sequence of non-whitespace characters (not braces, strings)
-def t_ccode_nonspace(t):
-   r'[^\s\{\}\'\"]+'
-
-# Ignored characters (whitespace)
-t_ccode_ignore = " \t\n"
-
-# For bad characters, we just skip over it
-def t_ccode_error(t):
-    t.lexer.skip(1)
-</pre>
-</blockquote>
-
-In this example, the occurrence of the first '{' causes the lexer to record the starting position and enter a new state <tt>'ccode'</tt>.  A collection of rules then match
-various parts of the input that follow (comments, strings, etc.).  All of these rules merely discard the token (by not returning a value).
-However, if the closing right brace is encountered, the rule <tt>t_ccode_rbrace</tt> collects all of the code (using the earlier recorded starting
-position), stores it, and returns a token 'CCODE' containing all of that text.  When returning the token, the lexing state is restored back to its
-initial state.
-
-<H3><a name="ply_nn21"></a>3.19 Miscellaneous Issues</H3>
-
-
-<P>
-<li>The lexer requires input to be supplied as a single input string.  Since most machines have more than enough memory, this 
-rarely presents a performance concern.  However, it means that the lexer currently can't be used with streaming data
-such as open files or sockets.  This limitation is primarily a side-effect of using the <tt>re</tt> module.
-
-<p>
-<li>The lexer should work properly with both Unicode strings given as token and pattern matching rules as
-well as for input text.
-
-<p>
-<li>If you need to supply optional flags to the re.compile() function, use the reflags option to lex.  For example:
-
-<blockquote>
-<pre>
-lex.lex(reflags=re.UNICODE)
-</pre>
-</blockquote>
-
-<p>
-<li>Since the lexer is written entirely in Python, its performance is
-largely determined by that of the Python <tt>re</tt> module.  Although
-the lexer has been written to be as efficient as possible, it's not
-blazingly fast when used on very large input files.  If
-performance is concern, you might consider upgrading to the most
-recent version of Python, creating a hand-written lexer, or offloading
-the lexer into a C extension module.  
-
-<p>
-If you are going to create a hand-written lexer and you plan to use it with <tt>yacc.py</tt>, 
-it only needs to conform to the following requirements:
-
-<ul>
-<li>It must provide a <tt>token()</tt> method that returns the next token or <tt>None</tt> if no more
-tokens are available.
-<li>The <tt>token()</tt> method must return an object <tt>tok</tt> that has <tt>type</tt> and <tt>value</tt> attributes.
-</ul>
-
-<H2><a name="ply_nn22"></a>4. Parsing basics</H2>
-
-
-<tt>yacc.py</tt> is used to parse language syntax.  Before showing an
-example, there are a few important bits of background that must be
-mentioned.  First, <em>syntax</em> is usually specified in terms of a BNF grammar.
-For example, if you wanted to parse
-simple arithmetic expressions, you might first write an unambiguous
-grammar specification like this:
-
-<blockquote>
-<pre> 
-expression : expression + term
-           | expression - term
-           | term
-
-term       : term * factor
-           | term / factor
-           | factor
-
-factor     : NUMBER
-           | ( expression )
-</pre>
-</blockquote>
-
-In the grammar, symbols such as <tt>NUMBER</tt>, <tt>+</tt>, <tt>-</tt>, <tt>*</tt>, and <tt>/</tt> are known
-as <em>terminals</em> and correspond to raw input tokens.  Identifiers such as <tt>term</tt> and <tt>factor</tt> refer to more
-complex rules, typically comprised of a collection of tokens.  These identifiers are known as <em>non-terminals</em>.
-<P>
-The semantic behavior of a language is often specified using a
-technique known as syntax directed translation.  In syntax directed
-translation, attributes are attached to each symbol in a given grammar
-rule along with an action.  Whenever a particular grammar rule is
-recognized, the action describes what to do.  For example, given the
-expression grammar above, you might write the specification for a
-simple calculator like this:
-
-<blockquote>
-<pre> 
-Grammar                             Action
---------------------------------    -------------------------------------------- 
-expression0 : expression1 + term    expression0.val = expression1.val + term.val
-            | expression1 - term    expression0.val = expression1.val - term.val
-            | term                  expression0.val = term.val
-
-term0       : term1 * factor        term0.val = term1.val * factor.val
-            | term1 / factor        term0.val = term1.val / factor.val
-            | factor                term0.val = factor.val
-
-factor      : NUMBER                factor.val = int(NUMBER.lexval)
-            | ( expression )        factor.val = expression.val
-</pre>
-</blockquote>
-
-A good way to think about syntax directed translation is to simply think of each symbol in the grammar as some
-kind of object.  The semantics of the language are then expressed as a collection of methods/operations on these
-objects. 
-
-<p>
-Yacc uses a parsing technique known as LR-parsing or shift-reduce parsing.  LR parsing is a
-bottom up technique that tries to recognize the right-hand-side of various grammar rules.
-Whenever a valid right-hand-side is found in the input, the appropriate action code is triggered and the
-grammar symbols are replaced by the grammar symbol on the left-hand-side. 
-
-<p>
-LR parsing is commonly implemented by shifting grammar symbols onto a stack and looking at the stack and the next
-input token for patterns.   The details of the algorithm can be found in a compiler text, but the
-following example illustrates the steps that are performed if you wanted to parse the expression 
-<tt>3 + 5 * (10 - 20)</tt> using the grammar defined above:
-
-<blockquote>
-<pre>
-Step Symbol Stack           Input Tokens            Action
----- ---------------------  ---------------------   -------------------------------
-1    $                      3 + 5 * ( 10 - 20 )$    Shift 3
-2    $ 3                      + 5 * ( 10 - 20 )$    Reduce factor : NUMBER
-3    $ factor                 + 5 * ( 10 - 20 )$    Reduce term   : factor
-4    $ term                   + 5 * ( 10 - 20 )$    Reduce expr : term
-5    $ expr                   + 5 * ( 10 - 20 )$    Shift +
-6    $ expr +                   5 * ( 10 - 20 )$    Shift 5
-7    $ expr + 5                   * ( 10 - 20 )$    Reduce factor : NUMBER
-8    $ expr + factor              * ( 10 - 20 )$    Reduce term   : factor
-9    $ expr + term                * ( 10 - 20 )$    Shift *
-10   $ expr + term *                ( 10 - 20 )$    Shift (
-11   $ expr + term * (                10 - 20 )$    Shift 10
-12   $ expr + term * ( 10                - 20 )$    Reduce factor : NUMBER
-13   $ expr + term * ( factor            - 20 )$    Reduce term : factor
-14   $ expr + term * ( term              - 20 )$    Reduce expr : term
-15   $ expr + term * ( expr              - 20 )$    Shift -
-16   $ expr + term * ( expr -              20 )$    Shift 20
-17   $ expr + term * ( expr - 20              )$    Reduce factor : NUMBER
-18   $ expr + term * ( expr - factor          )$    Reduce term : factor
-19   $ expr + term * ( expr - term            )$    Reduce expr : expr - term
-20   $ expr + term * ( expr                   )$    Shift )
-21   $ expr + term * ( expr )                  $    Reduce factor : (expr)
-22   $ expr + term * factor                    $    Reduce term : term * factor
-23   $ expr + term                             $    Reduce expr : expr + term
-24   $ expr                                    $    Reduce expr
-25   $                                         $    Success!
-</pre>
-</blockquote>
-
-When parsing the expression, an underlying state machine and the current input token determine what to do next.  
-If the next token looks like part of a valid grammar rule (based on other items on the stack), it is generally shifted
-onto the stack.  If the top of the stack contains a valid right-hand-side of a grammar rule, it is
-usually "reduced" and the symbols replaced with the symbol on the left-hand-side.  When this reduction occurs, the
-appropriate action is triggered (if defined).  If the input token can't be shifted and the top of stack doesn't match
-any grammar rules, a syntax error has occurred and the parser must take some kind of recovery step (or bail out).
-
-<p>
-It is important to note that the underlying implementation is built around a large finite-state machine that is encoded
-in a collection of tables. The construction of these tables is quite complicated and beyond the scope of this discussion.
-However, subtle details of this process explain why, in the example above, the parser chooses to shift a token
-onto the stack in step 9 rather than reducing the rule <tt>expr : expr + term</tt>.
-
-<H2><a name="ply_nn23"></a>5. Yacc reference</H2>
-
-
-This section describes how to use write parsers in PLY.
-
-<H3><a name="ply_nn24"></a>5.1 An example</H3>
-
-
-Suppose you wanted to make a grammar for simple arithmetic expressions as previously described.   Here is
-how you would do it with <tt>yacc.py</tt>:
-
-<blockquote>
-<pre>
-# Yacc example
-
-import ply.yacc as yacc
-
-# Get the token map from the lexer.  This is required.
-from calclex import tokens
-
-def p_expression_plus(p):
-    'expression : expression PLUS term'
-    p[0] = p[1] + p[3]
-
-def p_expression_minus(p):
-    'expression : expression MINUS term'
-    p[0] = p[1] - p[3]
-
-def p_expression_term(p):
-    'expression : term'
-    p[0] = p[1]
-
-def p_term_times(p):
-    'term : term TIMES factor'
-    p[0] = p[1] * p[3]
-
-def p_term_div(p):
-    'term : term DIVIDE factor'
-    p[0] = p[1] / p[3]
-
-def p_term_factor(p):
-    'term : factor'
-    p[0] = p[1]
-
-def p_factor_num(p):
-    'factor : NUMBER'
-    p[0] = p[1]
-
-def p_factor_expr(p):
-    'factor : LPAREN expression RPAREN'
-    p[0] = p[2]
-
-# Error rule for syntax errors
-def p_error(p):
-    print "Syntax error in input!"
-
-# Build the parser
-yacc.yacc()
-
-# Use this if you want to build the parser using SLR instead of LALR
-# yacc.yacc(method="SLR")
-
-while 1:
-   try:
-       s = raw_input('calc > ')
-   except EOFError:
-       break
-   if not s: continue
-   result = yacc.parse(s)
-   print result
-</pre>
-</blockquote>
-
-In this example, each grammar rule is defined by a Python function where the docstring to that function contains the
-appropriate context-free grammar specification.  Each function accepts a single
-argument <tt>p</tt> that is a sequence containing the values of each grammar symbol in the corresponding rule.  The values of
-<tt>p[i]</tt> are mapped to grammar symbols as shown here:
-
-<blockquote>
-<pre>
-def p_expression_plus(p):
-    'expression : expression PLUS term'
-    #   ^            ^        ^    ^
-    #  p[0]         p[1]     p[2] p[3]
-
-    p[0] = p[1] + p[3]
-</pre>
-</blockquote>
-
-For tokens, the "value" of the corresponding <tt>p[i]</tt> is the
-<em>same</em> as the <tt>p.value</tt> attribute assigned
-in the lexer module.  For non-terminals, the value is determined by
-whatever is placed in <tt>p[0]</tt> when rules are reduced.  This
-value can be anything at all.  However, it probably most common for
-the value to be a simple Python type, a tuple, or an instance.  In this example, we
-are relying on the fact that the <tt>NUMBER</tt> token stores an integer value in its value
-field.  All of the other rules simply perform various types of integer operations and store
-the result.
-
-<P>
-Note: The use of negative indices have a special meaning in yacc---specially <tt>p[-1]</tt> does
-not have the same value as <tt>p[3]</tt> in this example.  Please see the section on "Embedded Actions" for further
-details.
-
-<p>
-The first rule defined in the yacc specification determines the starting grammar
-symbol (in this case, a rule for <tt>expression</tt> appears first).  Whenever
-the starting rule is reduced by the parser and no more input is available, parsing 
-stops and the final value is returned (this value will be whatever the top-most rule
-placed in <tt>p[0]</tt>). Note: an alternative starting symbol can be specified using the <tt>start</tt> keyword argument to
-<tt>yacc()</tt>.
-
-<p>The <tt>p_error(p)</tt> rule is defined to catch syntax errors.  See the error handling section
-below for more detail.
-
-<p>
-To build the parser, call the <tt>yacc.yacc()</tt> function.  This function
-looks at the module and attempts to construct all of the LR parsing tables for the grammar
-you have specified.   The first time <tt>yacc.yacc()</tt> is invoked, you will get a message
-such as this:
-
-<blockquote>
-<pre>
-$ python calcparse.py
-yacc: Generating LALR parsing table...  
-calc > 
-</pre>
-</blockquote>
-
-Since table construction is relatively expensive (especially for large
-grammars), the resulting parsing table is written to the current
-directory in a file called <tt>parsetab.py</tt>.  In addition, a
-debugging file called <tt>parser.out</tt> is created.  On subsequent
-executions, <tt>yacc</tt> will reload the table from
-<tt>parsetab.py</tt> unless it has detected a change in the underlying
-grammar (in which case the tables and <tt>parsetab.py</tt> file are
-regenerated).   Note: The names of parser output files can be changed if necessary.  See the notes that follow later.
-
-<p>
-If any errors are detected in your grammar specification, <tt>yacc.py</tt> will produce
-diagnostic messages and possibly raise an exception.  Some of the errors that can be detected include:
-
-<ul>
-<li>Duplicated function names (if more than one rule function have the same name in the grammar file).
-<li>Shift/reduce and reduce/reduce conflicts generated by ambiguous grammars.
-<li>Badly specified grammar rules.
-<li>Infinite recursion (rules that can never terminate).
-<li>Unused rules and tokens
-<li>Undefined rules and tokens
-</ul>
-
-The next few sections now discuss a few finer points of grammar construction.
-
-<H3><a name="ply_nn25"></a>5.2 Combining Grammar Rule Functions</H3>
-
-
-When grammar rules are similar, they can be combined into a single function.
-For example, consider the two rules in our earlier example:
-
-<blockquote>
-<pre>
-def p_expression_plus(p):
-    'expression : expression PLUS term'
-    p[0] = p[1] + p[3]
-
-def p_expression_minus(t):
-    'expression : expression MINUS term'
-    p[0] = p[1] - p[3]
-</pre>
-</blockquote>
-
-Instead of writing two functions, you might write a single function like this:
-
-<blockquote>
-<pre>
-def p_expression(p):
-    '''expression : expression PLUS term
-                  | expression MINUS term'''
-    if p[2] == '+':
-        p[0] = p[1] + p[3]
-    elif p[2] == '-':
-        p[0] = p[1] - p[3]
-</pre>
-</blockquote>
-
-In general, the doc string for any given function can contain multiple grammar rules.  So, it would
-have also been legal (although possibly confusing) to write this:
-
-<blockquote>
-<pre>
-def p_binary_operators(p):
-    '''expression : expression PLUS term
-                  | expression MINUS term
-       term       : term TIMES factor
-                  | term DIVIDE factor'''
-    if p[2] == '+':
-        p[0] = p[1] + p[3]
-    elif p[2] == '-':
-        p[0] = p[1] - p[3]
-    elif p[2] == '*':
-        p[0] = p[1] * p[3]
-    elif p[2] == '/':
-        p[0] = p[1] / p[3]
-</pre>
-</blockquote>
-
-When combining grammar rules into a single function, it is usually a good idea for all of the rules to have
-a similar structure (e.g., the same number of terms).  Otherwise, the corresponding action code may be more 
-complicated than necessary.  However, it is possible to handle simple cases using len().  For example:
-
-<blockquote>
-<pre>
-def p_expressions(p):
-    '''expression : expression MINUS expression
-                  | MINUS expression'''
-    if (len(p) == 4):
-        p[0] = p[1] - p[3]
-    elif (len(p) == 3):
-        p[0] = -p[2]
-</pre>
-</blockquote>
-
-<H3><a name="ply_nn26"></a>5.3 Character Literals</H3>
-
-
-If desired, a grammar may contain tokens defined as single character literals.   For example:
-
-<blockquote>
-<pre>
-def p_binary_operators(p):
-    '''expression : expression '+' term
-                  | expression '-' term
-       term       : term '*' factor
-                  | term '/' factor'''
-    if p[2] == '+':
-        p[0] = p[1] + p[3]
-    elif p[2] == '-':
-        p[0] = p[1] - p[3]
-    elif p[2] == '*':
-        p[0] = p[1] * p[3]
-    elif p[2] == '/':
-        p[0] = p[1] / p[3]
-</pre>
-</blockquote>
-
-A character literal must be enclosed in quotes such as <tt>'+'</tt>.  In addition, if literals are used, they must be declared in the
-corresponding <tt>lex</tt> file through the use of a special <tt>literals</tt> declaration.
-
-<blockquote>
-<pre>
-# Literals.  Should be placed in module given to lex()
-literals = ['+','-','*','/' ]
-</pre>
-</blockquote>
-
-<b>Character literals are limited to a single character</b>.  Thus, it is not legal to specify literals such as <tt>'&lt;='</tt> or <tt>'=='</tt>.  For this, use
-the normal lexing rules (e.g., define a rule such as <tt>t_EQ = r'=='</tt>).
-
-<H3><a name="ply_nn26"></a>5.4 Empty Productions</H3>
-
-
-<tt>yacc.py</tt> can handle empty productions by defining a rule like this:
-
-<blockquote>
-<pre>
-def p_empty(p):
-    'empty :'
-    pass
-</pre>
-</blockquote>
-
-Now to use the empty production, simply use 'empty' as a symbol.  For example:
-
-<blockquote>
-<pre>
-def p_optitem(p):
-    'optitem : item'
-    '        | empty'
-    ...
-</pre>
-</blockquote>
-
-Note: You can write empty rules anywhere by simply specifying an empty right hand side.  However, I personally find that
-writing an "empty" rule and using "empty" to denote an empty production is easier to read.
-
-<H3><a name="ply_nn28"></a>5.5 Changing the starting symbol</H3>
-
-
-Normally, the first rule found in a yacc specification defines the starting grammar rule (top level rule).  To change this, simply
-supply a <tt>start</tt> specifier in your file.  For example:
-
-<blockquote>
-<pre>
-start = 'foo'
-
-def p_bar(p):
-    'bar : A B'
-
-# This is the starting rule due to the start specifier above
-def p_foo(p):
-    'foo : bar X'
-...
-</pre>
-</blockquote>
-
-The use of a <tt>start</tt> specifier may be useful during debugging since you can use it to have yacc build a subset of
-a larger grammar.  For this purpose, it is also possible to specify a starting symbol as an argument to <tt>yacc()</tt>. For example:
-
-<blockquote>
-<pre>
-yacc.yacc(start='foo')
-</pre>
-</blockquote>
-
-<H3><a name="ply_nn27"></a>5.6 Dealing With Ambiguous Grammars</H3>
-
-
-The expression grammar given in the earlier example has been written in a special format to eliminate ambiguity. 
-However, in many situations, it is extremely difficult or awkward to write grammars in this format.  A
-much more natural way to express the grammar is in a more compact form like this:
-
-<blockquote>
-<pre>
-expression : expression PLUS expression
-           | expression MINUS expression
-           | expression TIMES expression
-           | expression DIVIDE expression
-           | LPAREN expression RPAREN
-           | NUMBER
-</pre>
-</blockquote>
-
-Unfortunately, this grammar specification is ambiguous.  For example, if you are parsing the string
-"3 * 4 + 5", there is no way to tell how the operators are supposed to be grouped.
-For example, does the expression mean "(3 * 4) + 5" or is it "3 * (4+5)"?
-
-<p>
-When an ambiguous grammar is given to <tt>yacc.py</tt> it will print messages about "shift/reduce conflicts" 
-or a "reduce/reduce conflicts".   A shift/reduce conflict is caused when the parser generator can't decide
-whether or not to reduce a rule or shift a symbol on the parsing stack.   For example, consider
-the string "3 * 4 + 5" and the internal parsing stack:
-
-<blockquote>
-<pre>
-Step Symbol Stack           Input Tokens            Action
----- ---------------------  ---------------------   -------------------------------
-1    $                                3 * 4 + 5$    Shift 3
-2    $ 3                                * 4 + 5$    Reduce : expression : NUMBER
-3    $ expr                             * 4 + 5$    Shift *
-4    $ expr *                             4 + 5$    Shift 4
-5    $ expr * 4                             + 5$    Reduce: expression : NUMBER
-6    $ expr * expr                          + 5$    SHIFT/REDUCE CONFLICT ????
-</pre>
-</blockquote>
-
-In this case, when the parser reaches step 6, it has two options.  One is to reduce the
-rule <tt>expr : expr * expr</tt> on the stack.  The other option is to shift the
-token <tt>+</tt> on the stack.   Both options are perfectly legal from the rules
-of the context-free-grammar.
-
-<p>
-By default, all shift/reduce conflicts are resolved in favor of shifting.  Therefore, in the above
-example, the parser will always shift the <tt>+</tt> instead of reducing.    Although this
-strategy works in many cases (including the ambiguous if-then-else), it is not enough for arithmetic
-expressions.  In fact, in the above example, the decision to shift <tt>+</tt> is completely wrong---we should have
-reduced <tt>expr * expr</tt> since multiplication has higher mathematical precedence than addition.
-
-<p>To resolve ambiguity, especially in expression grammars, <tt>yacc.py</tt> allows individual
-tokens to be assigned a precedence level and associativity.  This is done by adding a variable
-<tt>precedence</tt> to the grammar file like this:
-
-<blockquote>
-<pre>
-precedence = (
-    ('left', 'PLUS', 'MINUS'),
-    ('left', 'TIMES', 'DIVIDE'),
-)
-</pre>
-</blockquote>
-
-This declaration specifies that <tt>PLUS</tt>/<tt>MINUS</tt> have
-the same precedence level and are left-associative and that 
-<tt>TIMES</tt>/<tt>DIVIDE</tt> have the same precedence and are left-associative. 
-Within the <tt>precedence</tt> declaration, tokens are ordered from lowest to highest precedence. Thus,
-this declaration specifies that <tt>TIMES</tt>/<tt>DIVIDE</tt> have higher
-precedence than <tt>PLUS</tt>/<tt>MINUS</tt> (since they appear later in the
-precedence specification).
-
-<p>
-The precedence specification works by associating a numerical precedence level value and associativity direction to
-the listed tokens.  For example, in the above example you get:
-
-<blockquote>
-<pre>
-PLUS      : level = 1,  assoc = 'left'
-MINUS     : level = 1,  assoc = 'left'
-TIMES     : level = 2,  assoc = 'left'
-DIVIDE    : level = 2,  assoc = 'left'
-</pre>
-</blockquote>
-
-These values are then used to attach a numerical precedence value and associativity direction 
-to each grammar rule. <em>This is always determined by looking at the precedence of the right-most terminal symbol.</em>  
-For example:
-
-<blockquote>
-<pre>
-expression : expression PLUS expression                 # level = 1, left
-           | expression MINUS expression                # level = 1, left
-           | expression TIMES expression                # level = 2, left
-           | expression DIVIDE expression               # level = 2, left
-           | LPAREN expression RPAREN                   # level = None (not specified)
-           | NUMBER                                     # level = None (not specified)
-</pre>
-</blockquote>
-
-When shift/reduce conflicts are encountered, the parser generator resolves the conflict by
-looking at the precedence rules and associativity specifiers.
-
-<p>
-<ol>
-<li>If the current token has higher precedence, it is shifted.
-<li>If the grammar rule on the stack has higher precedence, the rule is reduced.
-<li>If the current token and the grammar rule have the same precedence, the
-rule is reduced for left associativity, whereas the token is shifted for right associativity.
-<li>If nothing is known about the precedence, shift/reduce conflicts are resolved in
-favor of shifting (the default).
-</ol>
-
-For example, if "expression PLUS expression" has been parsed and the next token
-is "TIMES", the action is going to be a shift because "TIMES" has a higher precedence level than "PLUS".  On the other
-hand, if "expression TIMES expression" has been parsed and the next token is "PLUS", the action
-is going to be reduce because "PLUS" has a lower precedence than "TIMES."
-
-<p>
-When shift/reduce conflicts are resolved using the first three techniques (with the help of
-precedence rules), <tt>yacc.py</tt> will report no errors or conflicts in the grammar. 
-
-<p>
-One problem with the precedence specifier technique is that it is sometimes necessary to
-change the precedence of an operator in certain contents.  For example, consider a unary-minus operator
-in "3 + 4 * -5".  Normally, unary minus has a very high precedence--being evaluated before the multiply.
-However, in our precedence specifier, MINUS has a lower precedence than TIMES.  To deal with this,
-precedence rules can be given for fictitious tokens like this:
-
-<blockquote>
-<pre>
-precedence = (
-    ('left', 'PLUS', 'MINUS'),
-    ('left', 'TIMES', 'DIVIDE'),
-    ('right', 'UMINUS'),            # Unary minus operator
-)
-</pre>
-</blockquote>
-
-Now, in the grammar file, we can write our unary minus rule like this:
-
-<blockquote>
-<pre>
-def p_expr_uminus(p):
-    'expression : MINUS expression %prec UMINUS'
-    p[0] = -p[2]
-</pre>
-</blockquote>
-
-In this case, <tt>%prec UMINUS</tt> overrides the default rule precedence--setting it to that
-of UMINUS in the precedence specifier.
-
-<p>
-At first, the use of UMINUS in this example may appear very confusing.
-UMINUS is not an input token or a grammer rule.  Instead, you should
-think of it as the name of a special marker in the precedence table.   When you use the <tt>%prec</tt> qualifier, you're simply
-telling yacc that you want the precedence of the expression to be the same as for this special marker instead of the usual precedence.
-
-<p>
-It is also possible to specify non-associativity in the <tt>precedence</tt> table. This would
-be used when you <em>don't</em> want operations to chain together.  For example, suppose
-you wanted to support comparison operators like <tt>&lt;</tt> and <tt>&gt;</tt> but you didn't want to allow
-combinations like <tt>a &lt; b &lt; c</tt>.   To do this, simply specify a rule like this:
-
-<blockquote>
-<pre>
-precedence = (
-    ('nonassoc', 'LESSTHAN', 'GREATERTHAN'),  # Nonassociative operators
-    ('left', 'PLUS', 'MINUS'),
-    ('left', 'TIMES', 'DIVIDE'),
-    ('right', 'UMINUS'),            # Unary minus operator
-)
-</pre>
-</blockquote>
-
-<p>
-If you do this, the occurrence of input text such as <tt> a &lt; b &lt; c</tt> will result in a syntax error.  However, simple
-expressions such as <tt>a &lt; b</tt> will still be fine.
-
-<p>
-Reduce/reduce conflicts are caused when there are multiple grammar
-rules that can be applied to a given set of symbols.  This kind of
-conflict is almost always bad and is always resolved by picking the
-rule that appears first in the grammar file.   Reduce/reduce conflicts
-are almost always caused when different sets of grammar rules somehow
-generate the same set of symbols.  For example:
-
-<blockquote>
-<pre>
-assignment :  ID EQUALS NUMBER
-           |  ID EQUALS expression
-           
-expression : expression PLUS expression
-           | expression MINUS expression
-           | expression TIMES expression
-           | expression DIVIDE expression
-           | LPAREN expression RPAREN
-           | NUMBER
-</pre>
-</blockquote>
-
-In this case, a reduce/reduce conflict exists between these two rules:
-
-<blockquote>
-<pre>
-assignment  : ID EQUALS NUMBER
-expression  : NUMBER
-</pre>
-</blockquote>
-
-For example, if you wrote "a = 5", the parser can't figure out if this
-is supposed to be reduced as <tt>assignment : ID EQUALS NUMBER</tt> or
-whether it's supposed to reduce the 5 as an expression and then reduce
-the rule <tt>assignment : ID EQUALS expression</tt>.
-
-<p>
-It should be noted that reduce/reduce conflicts are notoriously difficult to spot
-simply looking at the input grammer.    To locate these, it is usually easier to look at the
-<tt>parser.out</tt> debugging file with an appropriately high level of caffeination.
-
-<H3><a name="ply_nn28"></a>5.7 The parser.out file</H3>
-
-
-Tracking down shift/reduce and reduce/reduce conflicts is one of the finer pleasures of using an LR
-parsing algorithm.  To assist in debugging, <tt>yacc.py</tt> creates a debugging file called
-'parser.out' when it generates the parsing table.   The contents of this file look like the following:
-
-<blockquote>
-<pre>
-Unused terminals:
-
-
-Grammar
-
-Rule 1     expression -> expression PLUS expression
-Rule 2     expression -> expression MINUS expression
-Rule 3     expression -> expression TIMES expression
-Rule 4     expression -> expression DIVIDE expression
-Rule 5     expression -> NUMBER
-Rule 6     expression -> LPAREN expression RPAREN
-
-Terminals, with rules where they appear
-
-TIMES                : 3
-error                : 
-MINUS                : 2
-RPAREN               : 6
-LPAREN               : 6
-DIVIDE               : 4
-PLUS                 : 1
-NUMBER               : 5
-
-Nonterminals, with rules where they appear
-
-expression           : 1 1 2 2 3 3 4 4 6 0
-
-
-Parsing method: LALR
-
-
-state 0
-
-    S' -> . expression
-    expression -> . expression PLUS expression
-    expression -> . expression MINUS expression
-    expression -> . expression TIMES expression
-    expression -> . expression DIVIDE expression
-    expression -> . NUMBER
-    expression -> . LPAREN expression RPAREN
-
-    NUMBER          shift and go to state 3
-    LPAREN          shift and go to state 2
-
-
-state 1
-
-    S' -> expression .
-    expression -> expression . PLUS expression
-    expression -> expression . MINUS expression
-    expression -> expression . TIMES expression
-    expression -> expression . DIVIDE expression
-
-    PLUS            shift and go to state 6
-    MINUS           shift and go to state 5
-    TIMES           shift and go to state 4
-    DIVIDE          shift and go to state 7
-
-
-state 2
-
-    expression -> LPAREN . expression RPAREN
-    expression -> . expression PLUS expression
-    expression -> . expression MINUS expression
-    expression -> . expression TIMES expression
-    expression -> . expression DIVIDE expression
-    expression -> . NUMBER
-    expression -> . LPAREN expression RPAREN
-
-    NUMBER          shift and go to state 3
-    LPAREN          shift and go to state 2
-
-
-state 3
-
-    expression -> NUMBER .
-
-    $               reduce using rule 5
-    PLUS            reduce using rule 5
-    MINUS           reduce using rule 5
-    TIMES           reduce using rule 5
-    DIVIDE          reduce using rule 5
-    RPAREN          reduce using rule 5
-
-
-state 4
-
-    expression -> expression TIMES . expression
-    expression -> . expression PLUS expression
-    expression -> . expression MINUS expression
-    expression -> . expression TIMES expression
-    expression -> . expression DIVIDE expression
-    expression -> . NUMBER
-    expression -> . LPAREN expression RPAREN
-
-    NUMBER          shift and go to state 3
-    LPAREN          shift and go to state 2
-
-
-state 5
-
-    expression -> expression MINUS . expression
-    expression -> . expression PLUS expression
-    expression -> . expression MINUS expression
-    expression -> . expression TIMES expression
-    expression -> . expression DIVIDE expression
-    expression -> . NUMBER
-    expression -> . LPAREN expression RPAREN
-
-    NUMBER          shift and go to state 3
-    LPAREN          shift and go to state 2
-
-
-state 6
-
-    expression -> expression PLUS . expression
-    expression -> . expression PLUS expression
-    expression -> . expression MINUS expression
-    expression -> . expression TIMES expression
-    expression -> . expression DIVIDE expression
-    expression -> . NUMBER
-    expression -> . LPAREN expression RPAREN
-
-    NUMBER          shift and go to state 3
-    LPAREN          shift and go to state 2
-
-
-state 7
-
-    expression -> expression DIVIDE . expression
-    expression -> . expression PLUS expression
-    expression -> . expression MINUS expression
-    expression -> . expression TIMES expression
-    expression -> . expression DIVIDE expression
-    expression -> . NUMBER
-    expression -> . LPAREN expression RPAREN
-
-    NUMBER          shift and go to state 3
-    LPAREN          shift and go to state 2
-
-
-state 8
-
-    expression -> LPAREN expression . RPAREN
-    expression -> expression . PLUS expression
-    expression -> expression . MINUS expression
-    expression -> expression . TIMES expression
-    expression -> expression . DIVIDE expression
-
-    RPAREN          shift and go to state 13
-    PLUS            shift and go to state 6
-    MINUS           shift and go to state 5
-    TIMES           shift and go to state 4
-    DIVIDE          shift and go to state 7
-
-
-state 9
-
-    expression -> expression TIMES expression .
-    expression -> expression . PLUS expression
-    expression -> expression . MINUS expression
-    expression -> expression . TIMES expression
-    expression -> expression . DIVIDE expression
-
-    $               reduce using rule 3
-    PLUS            reduce using rule 3
-    MINUS           reduce using rule 3
-    TIMES           reduce using rule 3
-    DIVIDE          reduce using rule 3
-    RPAREN          reduce using rule 3
-
-  ! PLUS            [ shift and go to state 6 ]
-  ! MINUS           [ shift and go to state 5 ]
-  ! TIMES           [ shift and go to state 4 ]
-  ! DIVIDE          [ shift and go to state 7 ]
-
-state 10
-
-    expression -> expression MINUS expression .
-    expression -> expression . PLUS expression
-    expression -> expression . MINUS expression
-    expression -> expression . TIMES expression
-    expression -> expression . DIVIDE expression
-
-    $               reduce using rule 2
-    PLUS            reduce using rule 2
-    MINUS           reduce using rule 2
-    RPAREN          reduce using rule 2
-    TIMES           shift and go to state 4
-    DIVIDE          shift and go to state 7
-
-  ! TIMES           [ reduce using rule 2 ]
-  ! DIVIDE          [ reduce using rule 2 ]
-  ! PLUS            [ shift and go to state 6 ]
-  ! MINUS           [ shift and go to state 5 ]
-
-state 11
-
-    expression -> expression PLUS expression .
-    expression -> expression . PLUS expression
-    expression -> expression . MINUS expression
-    expression -> expression . TIMES expression
-    expression -> expression . DIVIDE expression
-
-    $               reduce using rule 1
-    PLUS            reduce using rule 1
-    MINUS           reduce using rule 1
-    RPAREN          reduce using rule 1
-    TIMES           shift and go to state 4
-    DIVIDE          shift and go to state 7
-
-  ! TIMES           [ reduce using rule 1 ]
-  ! DIVIDE          [ reduce using rule 1 ]
-  ! PLUS            [ shift and go to state 6 ]
-  ! MINUS           [ shift and go to state 5 ]
-
-state 12
-
-    expression -> expression DIVIDE expression .
-    expression -> expression . PLUS expression
-    expression -> expression . MINUS expression
-    expression -> expression . TIMES expression
-    expression -> expression . DIVIDE expression
-
-    $               reduce using rule 4
-    PLUS            reduce using rule 4
-    MINUS           reduce using rule 4
-    TIMES           reduce using rule 4
-    DIVIDE          reduce using rule 4
-    RPAREN          reduce using rule 4
-
-  ! PLUS            [ shift and go to state 6 ]
-  ! MINUS           [ shift and go to state 5 ]
-  ! TIMES           [ shift and go to state 4 ]
-  ! DIVIDE          [ shift and go to state 7 ]
-
-state 13
-
-    expression -> LPAREN expression RPAREN .
-
-    $               reduce using rule 6
-    PLUS            reduce using rule 6
-    MINUS           reduce using rule 6
-    TIMES           reduce using rule 6
-    DIVIDE          reduce using rule 6
-    RPAREN          reduce using rule 6
-</pre>
-</blockquote>
-
-In the file, each state of the grammar is described.  Within each state the "." indicates the current
-location of the parse within any applicable grammar rules.   In addition, the actions for each valid
-input token are listed.   When a shift/reduce or reduce/reduce conflict arises, rules <em>not</em> selected
-are prefixed with an !.  For example:
-
-<blockquote>
-<pre>
-  ! TIMES           [ reduce using rule 2 ]
-  ! DIVIDE          [ reduce using rule 2 ]
-  ! PLUS            [ shift and go to state 6 ]
-  ! MINUS           [ shift and go to state 5 ]
-</pre>
-</blockquote>
-
-By looking at these rules (and with a little practice), you can usually track down the source
-of most parsing conflicts.  It should also be stressed that not all shift-reduce conflicts are
-bad.  However, the only way to be sure that they are resolved correctly is to look at <tt>parser.out</tt>.
-  
-<H3><a name="ply_nn29"></a>5.8 Syntax Error Handling</H3>
-
-
-When a syntax error occurs during parsing, the error is immediately
-detected (i.e., the parser does not read any more tokens beyond the
-source of the error).  Error recovery in LR parsers is a delicate
-topic that involves ancient rituals and black-magic.   The recovery mechanism
-provided by <tt>yacc.py</tt> is comparable to Unix yacc so you may want
-consult a book like O'Reilly's "Lex and Yacc" for some of the finer details.
-
-<p>
-When a syntax error occurs, <tt>yacc.py</tt> performs the following steps:
-
-<ol>
-<li>On the first occurrence of an error, the user-defined <tt>p_error()</tt> function
-is called with the offending token as an argument.  Afterwards, the parser enters
-an "error-recovery" mode in which it will not make future calls to <tt>p_error()</tt> until it
-has successfully shifted at least 3 tokens onto the parsing stack.
-
-<p>
-<li>If no recovery action is taken in <tt>p_error()</tt>, the offending lookahead token is replaced
-with a special <tt>error</tt> token.
-
-<p>
-<li>If the offending lookahead token is already set to <tt>error</tt>, the top item of the parsing stack is
-deleted.
-
-<p>
-<li>If the entire parsing stack is unwound, the parser enters a restart state and attempts to start
-parsing from its initial state.
-
-<p>
-<li>If a grammar rule accepts <tt>error</tt> as a token, it will be
-shifted onto the parsing stack.
-
-<p>
-<li>If the top item of the parsing stack is <tt>error</tt>, lookahead tokens will be discarded until the
-parser can successfully shift a new symbol or reduce a rule involving <tt>error</tt>.
-</ol>
-
-<H4><a name="ply_nn30"></a>5.8.1 Recovery and resynchronization with error rules</H4>
-
-
-The most well-behaved approach for handling syntax errors is to write grammar rules that include the <tt>error</tt>
-token.  For example, suppose your language had a grammar rule for a print statement like this:
-
-<blockquote>
-<pre>
-def p_statement_print(p):
-     'statement : PRINT expr SEMI'
-     ...
-</pre>
-</blockquote>
-
-To account for the possibility of a bad expression, you might write an additional grammar rule like this:
-
-<blockquote>
-<pre>
-def p_statement_print_error(p):
-     'statement : PRINT error SEMI'
-     print "Syntax error in print statement. Bad expression"
-
-</pre>
-</blockquote>
-
-In this case, the <tt>error</tt> token will match any sequence of
-tokens that might appear up to the first semicolon that is
-encountered.  Once the semicolon is reached, the rule will be
-invoked and the <tt>error</tt> token will go away.
-
-<p>
-This type of recovery is sometimes known as parser resynchronization.
-The <tt>error</tt> token acts as a wildcard for any bad input text and
-the token immediately following <tt>error</tt> acts as a
-synchronization token.
-
-<p>
-It is important to note that the <tt>error</tt> token usually does not appear as the last token
-on the right in an error rule.  For example:
-
-<blockquote>
-<pre>
-def p_statement_print_error(p):
-    'statement : PRINT error'
-    print "Syntax error in print statement. Bad expression"
-</pre>
-</blockquote>
-
-This is because the first bad token encountered will cause the rule to
-be reduced--which may make it difficult to recover if more bad tokens
-immediately follow.   
-
-<H4><a name="ply_nn31"></a>5.8.2 Panic mode recovery</H4>
-
-
-An alternative error recovery scheme is to enter a panic mode recovery in which tokens are
-discarded to a point where the parser might be able to recover in some sensible manner.
-
-<p>
-Panic mode recovery is implemented entirely in the <tt>p_error()</tt> function.  For example, this
-function starts discarding tokens until it reaches a closing '}'.  Then, it restarts the 
-parser in its initial state.
-
-<blockquote>
-<pre>
-def p_error(p):
-    print "Whoa. You are seriously hosed."
-    # Read ahead looking for a closing '}'
-    while 1:
-        tok = yacc.token()             # Get the next token
-        if not tok or tok.type == 'RBRACE': break
-    yacc.restart()
-</pre>
-</blockquote>
-
-<p>
-This function simply discards the bad token and tells the parser that the error was ok.
-
-<blockquote>
-<pre>
-def p_error(p):
-    print "Syntax error at token", p.type
-    # Just discard the token and tell the parser it's okay.
-    yacc.errok()
-</pre>
-</blockquote>
-
-<P>
-Within the <tt>p_error()</tt> function, three functions are available to control the behavior
-of the parser:
-<p>
-<ul>
-<li><tt>yacc.errok()</tt>.  This resets the parser state so it doesn't think it's in error-recovery
-mode.   This will prevent an <tt>error</tt> token from being generated and will reset the internal
-error counters so that the next syntax error will call <tt>p_error()</tt> again.
-
-<p>
-<li><tt>yacc.token()</tt>.  This returns the next token on the input stream.
-
-<p>
-<li><tt>yacc.restart()</tt>.  This discards the entire parsing stack and resets the parser
-to its initial state. 
-</ul>
-
-Note: these functions are only available when invoking <tt>p_error()</tt> and are not available
-at any other time.
-
-<p>
-To supply the next lookahead token to the parser, <tt>p_error()</tt> can return a token.  This might be
-useful if trying to synchronize on special characters.  For example:
-
-<blockquote>
-<pre>
-def p_error(p):
-    # Read ahead looking for a terminating ";"
-    while 1:
-        tok = yacc.token()             # Get the next token
-        if not tok or tok.type == 'SEMI': break
-    yacc.errok()
-
-    # Return SEMI to the parser as the next lookahead token
-    return tok  
-</pre>
-</blockquote>
-
-<H4><a name="ply_nn32"></a>5.8.3 General comments on error handling</H4>
-
-
-For normal types of languages, error recovery with error rules and resynchronization characters is probably the most reliable
-technique. This is because you can instrument the grammar to catch errors at selected places where it is relatively easy 
-to recover and continue parsing.  Panic mode recovery is really only useful in certain specialized applications where you might want
-to discard huge portions of the input text to find a valid restart point.
-
-<H3><a name="ply_nn33"></a>5.9 Line Number and Position Tracking</H3>
-
-
-<tt>yacc.py</tt> automatically tracks line numbers and positions for all of the grammar symbols and tokens it processes.  To retrieve the line
-numbers, two functions are used in grammar rules:
-
-<ul>
-<li><tt>p.lineno(num)</tt>.  Return the starting line number for symbol <em>num</em>
-<li><tt>p.linespan(num)</tt>. Return a tuple (startline,endline) with the starting and ending line number for symbol <em>num</em>.
-</ul>
-
-For example:
-
-<blockquote>
-<pre>
-def p_expression(p):
-    'expression : expression PLUS expression'
-    p.lineno(1)        # Line number of the left expression
-    p.lineno(2)        # line number of the PLUS operator
-    p.lineno(3)        # line number of the right expression
-    ...
-    start,end = p.linespan(3)    # Start,end lines of the right expression
-
-</pre>
-</blockquote>
-
-Since line numbers are managed internally by the parser, there is usually no need to modify the line
-numbers.  However, if you want to save the line numbers in a parse-tree node, you will need to make your own
-private copy.
-
-<p>
-To get positional information about where tokens were lexed, the following two functions are used:
-
-<ul>
-<li><tt>p.lexpos(num)</tt>.  Return the starting lexing position for symbol <em>num</em>
-<li><tt>p.lexspan(num)</tt>. Return a tuple (start,end) with the starting and ending positions for symbol <em>num</em>.
-</ul>
-
-For example:
-
-<blockquote>
-<pre>
-def p_expression(p):
-    'expression : expression PLUS expression'
-    p.lexpos(1)        # Lexing position of the left expression
-    p.lexpos(2)        # Lexing position of the PLUS operator
-    p.lexpos(3)        # Lexing position of the right expression
-    ...
-    start,end = p.lexspan(3)    # Start,end positions of the right expression
-</pre>
-</blockquote>
-
-Note: The <tt>lexspan()</tt> function only returns the range of values up the start of the last grammar symbol. 
-
-<H3><a name="ply_nn34"></a>5.10 AST Construction</H3>
-
-
-<tt>yacc.py</tt> provides no special functions for constructing an abstract syntax tree.  However, such
-construction is easy enough to do on your own.  Simply create a data structure for abstract syntax tree nodes
-and assign nodes to <tt>p[0]</tt> in each rule.
-
-For example:
-
-<blockquote>
-<pre>
-class Expr: pass
-
-class BinOp(Expr):
-    def __init__(self,left,op,right):
-        self.type = "binop"
-        self.left = left
-        self.right = right
-        self.op = op
-
-class Number(Expr):
-    def __init__(self,value):
-        self.type = "number"
-        self.value = value
-
-def p_expression_binop(p):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-
-    p[0] = BinOp(p[1],p[2],p[3])
-
-def p_expression_group(p):
-    'expression : LPAREN expression RPAREN'
-    p[0] = p[2]
-
-def p_expression_number(p):
-    'expression : NUMBER'
-    p[0] = Number(p[1])
-</pre>
-</blockquote>
-
-To simplify tree traversal, it may make sense to pick a very generic tree structure for your parse tree nodes.
-For example:
-
-<blockquote>
-<pre>
-class Node:
-    def __init__(self,type,children=None,leaf=None):
-         self.type = type
-         if children:
-              self.children = children
-         else:
-              self.children = [ ]
-         self.leaf = leaf
-	 
-def p_expression_binop(p):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-
-    p[0] = Node("binop", [p[1],p[3]], p[2])
-</pre>
-</blockquote>
-
-<H3><a name="ply_nn35"></a>5.11 Embedded Actions</H3>
-
-
-The parsing technique used by yacc only allows actions to be executed at the end of a rule.  For example,
-suppose you have a rule like this:
-
-<blockquote>
-<pre>
-def p_foo(p):
-    "foo : A B C D"
-    print "Parsed a foo", p[1],p[2],p[3],p[4]
-</pre>
-</blockquote>
-
-<p>
-In this case, the supplied action code only executes after all of the
-symbols <tt>A</tt>, <tt>B</tt>, <tt>C</tt>, and <tt>D</tt> have been
-parsed. Sometimes, however, it is useful to execute small code
-fragments during intermediate stages of parsing.  For example, suppose
-you wanted to perform some action immediately after <tt>A</tt> has
-been parsed. To do this, you can write a empty rule like this:
-
-<blockquote>
-<pre>
-def p_foo(p):
-    "foo : A seen_A B C D"
-    print "Parsed a foo", p[1],p[3],p[4],p[5]
-    print "seen_A returned", p[2]
-
-def p_seen_A(p):
-    "seen_A :"
-    print "Saw an A = ", p[-1]   # Access grammar symbol to left
-    p[0] = some_value            # Assign value to seen_A
-
-</pre>
-</blockquote>
-
-<p>
-In this example, the empty <tt>seen_A</tt> rule executes immediately
-after <tt>A</tt> is shifted onto the parsing stack.  Within this
-rule, <tt>p[-1]</tt> refers to the symbol on the stack that appears
-immediately to the left of the <tt>seen_A</tt> symbol.  In this case,
-it would be the value of <tt>A</tt> in the <tt>foo</tt> rule
-immediately above.  Like other rules, a value can be returned from an
-embedded action by simply assigning it to <tt>p[0]</tt>
-
-<p>
-The use of embedded actions can sometimes introduce extra shift/reduce conflicts.  For example,
-this grammar has no conflicts:
-
-<blockquote>
-<pre>
-def p_foo(p):
-    """foo : abcd
-           | abcx"""
-
-def p_abcd(p):
-    "abcd : A B C D"
-
-def p_abcx(p):
-    "abcx : A B C X"
-</pre>
-</blockquote>
-
-However, if you insert an embedded action into one of the rules like this,
-
-<blockquote>
-<pre>
-def p_foo(p):
-    """foo : abcd
-           | abcx"""
-
-def p_abcd(p):
-    "abcd : A B C D"
-
-def p_abcx(p):
-    "abcx : A B seen_AB C X"
-
-def p_seen_AB(p):
-    "seen_AB :"
-</pre>
-</blockquote>
-
-an extra shift-reduce conflict will be introduced.  This conflict is caused by the fact that the same symbol <tt>C</tt> appears next in 
-both the <tt>abcd</tt> and <tt>abcx</tt> rules.   The parser can either shift the symbol (<tt>abcd</tt> rule) or reduce the empty rule <tt>seen_AB</tt> (<tt>abcx</tt> rule).
-
-<p>
-A common use of embedded rules is to control other aspects of parsing
-such as scoping of local variables.  For example, if you were parsing C code, you might
-write code like this:
-
-<blockquote>
-<pre>
-def p_statements_block(p):
-    "statements: LBRACE new_scope statements RBRACE"""
-    # Action code
-    ...
-    pop_scope()        # Return to previous scope
-
-def p_new_scope(p):
-    "new_scope :"
-    # Create a new scope for local variables
-    s = new_scope()
-    push_scope(s)
-    ...
-</pre>
-</blockquote>
-
-In this case, the embedded action <tt>new_scope</tt> executes immediately after a <tt>LBRACE</tt> (<tt>{</tt>) symbol is parsed.   This might 
-adjust internal symbol tables and other aspects of the parser.  Upon completion of the rule <tt>statements_block</tt>, code might undo the operations performed in the embedded action (e.g., <tt>pop_scope()</tt>).
-
-<H3><a name="ply_nn36"></a>5.12 Yacc implementation notes</H3>
-
-
-<ul>
-<li>The default parsing method is LALR. To use SLR instead, run yacc() as follows:
-
-<blockquote>
-<pre>
-yacc.yacc(method="SLR")
-</pre>
-</blockquote>
-Note: LALR table generation takes approximately twice as long as SLR table generation.   There is no
-difference in actual parsing performance---the same code is used in both cases.   LALR is preferred when working
-with more complicated grammars since it is more powerful.
-
-<p>
-
-<li>By default, <tt>yacc.py</tt> relies on <tt>lex.py</tt> for tokenizing.  However, an alternative tokenizer
-can be supplied as follows:
-
-<blockquote>
-<pre>
-yacc.parse(lexer=x)
-</pre>
-</blockquote>
-in this case, <tt>x</tt> must be a Lexer object that minimally has a <tt>x.token()</tt> method for retrieving the next
-token.   If an input string is given to <tt>yacc.parse()</tt>, the lexer must also have an <tt>x.input()</tt> method.
-
-<p>
-<li>By default, the yacc generates tables in debugging mode (which produces the parser.out file and other output).
-To disable this, use
-
-<blockquote>
-<pre>
-yacc.yacc(debug=0)
-</pre>
-</blockquote>
-
-<p>
-<li>To change the name of the <tt>parsetab.py</tt> file,  use:
-
-<blockquote>
-<pre>
-yacc.yacc(tabmodule="foo")
-</pre>
-</blockquote>
-
-<p>
-<li>To change the directory in which the <tt>parsetab.py</tt> file (and other output files) are written, use:
-<blockquote>
-<pre>
-yacc.yacc(tabmodule="foo",outputdir="somedirectory")
-</pre>
-</blockquote>
-
-<p>
-<li>To prevent yacc from generating any kind of parser table file, use:
-<blockquote>
-<pre>
-yacc.yacc(write_tables=0)
-</pre>
-</blockquote>
-
-Note: If you disable table generation, yacc() will regenerate the parsing tables
-each time it runs (which may take awhile depending on how large your grammar is).
-
-<P>
-<li>To print copious amounts of debugging during parsing, use:
-
-<blockquote>
-<pre>
-yacc.parse(debug=1)
-</pre>
-</blockquote>
-
-<p>
-<li>To redirect the debugging output to a filename of your choosing, use:
-
-<blockquote>
-<pre>
-yacc.parse(debug=1, debugfile="debugging.out")
-</pre>
-</blockquote>
-
-<p>
-<li>The <tt>yacc.yacc()</tt> function really returns a parser object.  If you want to support multiple
-parsers in the same application, do this:
-
-<blockquote>
-<pre>
-p = yacc.yacc()
-...
-p.parse()
-</pre>
-</blockquote>
-
-Note: The function <tt>yacc.parse()</tt> is bound to the last parser that was generated.
-
-<p>
-<li>Since the generation of the LALR tables is relatively expensive, previously generated tables are
-cached and reused if possible.  The decision to regenerate the tables is determined by taking an MD5
-checksum of all grammar rules and precedence rules.  Only in the event of a mismatch are the tables regenerated.
-
-<p>
-It should be noted that table generation is reasonably efficient, even for grammars that involve around a 100 rules
-and several hundred states.  For more complex languages such as C, table generation may take 30-60 seconds on a slow
-machine.  Please be patient.
-
-<p>
-<li>Since LR parsing is driven by tables, the performance of the parser is largely independent of the
-size of the grammar.   The biggest bottlenecks will be the lexer and the complexity of the code in your grammar rules.
-</ul>
-
-<H2><a name="ply_nn37"></a>6. Parser and Lexer State Management</H2>
-
-
-In advanced parsing applications, you may want to have multiple
-parsers and lexers.  Furthermore, the parser may want to control the
-behavior of the lexer in some way.
-
-<p>
-To do this, it is important to note that both the lexer and parser are
-actually implemented as objects.   These objects are returned by the
-<tt>lex()</tt> and <tt>yacc()</tt> functions respectively.  For example:
-
-<blockquote>
-<pre>
-lexer  = lex.lex()       # Return lexer object
-parser = yacc.yacc()     # Return parser object
-</pre>
-</blockquote>
-
-To attach the lexer and parser together, make sure you use the <tt>lexer</tt> argumemnt to parse.  For example:
-
-<blockquote>
-<pre>
-parser.parse(text,lexer=lexer)
-</pre>
-</blockquote>
-
-Within lexer and parser rules, these objects are also available.  In the lexer,
-the "lexer" attribute of a token refers to the lexer object in use.  For example:
-
-<blockquote>
-<pre>
-def t_NUMBER(t):
-   r'\d+'
-   ...
-   print t.lexer           # Show lexer object
-</pre>
-</blockquote>
-
-In the parser, the "lexer" and "parser" attributes refer to the lexer
-and parser objects respectively.
-
-<blockquote>
-<pre>
-def p_expr_plus(p):
-   'expr : expr PLUS expr'
-   ...
-   print p.parser          # Show parser object
-   print p.lexer           # Show lexer object
-</pre>
-</blockquote>
-
-If necessary, arbitrary attributes can be attached to the lexer or parser object.
-For example, if you wanted to have different parsing modes, you could attach a mode
-attribute to the parser object and look at it later.
-
-<H2><a name="ply_nn38"></a>7. Using Python's Optimized Mode</H2>
-
-
-Because PLY uses information from doc-strings, parsing and lexing
-information must be gathered while running the Python interpreter in
-normal mode (i.e., not with the -O or -OO options).  However, if you
-specify optimized mode like this:
-
-<blockquote>
-<pre>
-lex.lex(optimize=1)
-yacc.yacc(optimize=1)
-</pre>
-</blockquote>
-
-then PLY can later be used when Python runs in optimized mode. To make this work,
-make sure you first run Python in normal mode.  Once the lexing and parsing tables
-have been generated the first time, run Python in optimized mode. PLY will use
-the tables without the need for doc strings.
-
-<p>
-Beware: running PLY in optimized mode disables a lot of error
-checking.  You should only do this when your project has stabilized
-and you don't need to do any debugging.
-  
-<H2><a name="ply_nn39"></a>8. Where to go from here?</H2>
-
-
-The <tt>examples</tt> directory of the PLY distribution contains several simple examples.   Please consult a
-compilers textbook for the theory and underlying implementation details or LR parsing.
-
-</body>
-</html>
-
-
-
-
-
-
-
diff --git a/chall/ply-2.2/example/BASIC/README b/chall/ply-2.2/example/BASIC/README
deleted file mode 100644
index be24a30..0000000
--- a/chall/ply-2.2/example/BASIC/README
+++ /dev/null
@@ -1,79 +0,0 @@
-Inspired by a September 14, 2006 Salon article "Why Johnny Can't Code" by
-David Brin (http://www.salon.com/tech/feature/2006/09/14/basic/index.html),
-I thought that a fully working BASIC interpreter might be an interesting,
-if not questionable, PLY example.  Uh, okay, so maybe it's just a bad idea,
-but in any case, here it is.
-
-In this example, you'll find a rough implementation of 1964 Dartmouth BASIC
-as described in the manual at:
-
-   http://www.bitsavers.org/pdf/dartmouth/BASIC_Oct64.pdf
-
-See also:
-
-  http://en.wikipedia.org/wiki/Dartmouth_BASIC
-
-This dialect is downright primitive---there are no string variables
-and no facilities for interactive input. Moreover, subroutines and functions
-are brain-dead even more than they usually are for BASIC. Of course,
-the GOTO statement is provided.
-
-Nevertheless, there are a few interesting aspects of this example:
-
-  - It illustrates a fully working interpreter including lexing, parsing,
-    and interpretation of instructions.
- 
-  - The parser shows how to catch and report various kinds of parsing
-    errors in a more graceful way.
-
-  - The example both parses files (supplied on command line) and
-    interactive input entered line by line.
-
-  - It shows how you might represent parsed information.  In this case,
-    each BASIC statement is encoded into a Python tuple containing the
-    statement type and parameters.  These tuples are then stored in
-    a dictionary indexed by program line numbers.
-
-  - Even though it's just BASIC, the parser contains more than 80
-    rules and 150 parsing states. Thus, it's a little more meaty than
-    the calculator example.
-
-To use the example, run it as follows:
-
-   % python basic.py hello.bas
-   HELLO WORLD
-   %
-
-or use it interactively:
-
-   % python basic.py
-   [BASIC] 10 PRINT "HELLO WORLD"
-   [BASIC] 20 END
-   [BASIC] RUN
-   HELLO WORLD
-   [BASIC]
-
-The following files are defined:
-
-   basic.py         - High level script that controls everything
-   basiclex.py      - BASIC tokenizer
-   basparse.py      - BASIC parser
-   basinterp.py     - BASIC interpreter that runs parsed programs.
-
-In addition, a number of sample BASIC programs (.bas suffix) are
-provided.  These were taken out of the Dartmouth manual.
-
-Disclaimer: I haven't spent a ton of time testing this and it's likely that
-I've skimped here and there on a few finer details (e.g., strictly enforcing
-variable naming rules).  However, the interpreter seems to be able to run
-the examples in the BASIC manual.
-
-Have fun!
-
--Dave
-
-
-
-
-
-
diff --git a/chall/ply-2.2/example/BASIC/basic.py b/chall/ply-2.2/example/BASIC/basic.py
deleted file mode 100644
index 6a2f489..0000000
--- a/chall/ply-2.2/example/BASIC/basic.py
+++ /dev/null
@@ -1,68 +0,0 @@
-# An implementation of Dartmouth BASIC (1964)
-#
-
-import sys
-sys.path.insert(0,"../..")
-
-import basiclex
-import basparse
-import basinterp
-
-# If a filename has been specified, we try to run it.
-# If a runtime error occurs, we bail out and enter
-# interactive mode below
-if len(sys.argv) == 2:
-    data = open(sys.argv[1]).read()
-    prog = basparse.parse(data)
-    if not prog: raise SystemExit
-    b = basinterp.BasicInterpreter(prog)
-    try:
-        b.run()
-        raise SystemExit
-    except RuntimeError:
-        pass
-
-else:
-    b = basinterp.BasicInterpreter({})
-
-# Interactive mode.  This incrementally adds/deletes statements
-# from the program stored in the BasicInterpreter object.  In
-# addition, special commands 'NEW','LIST',and 'RUN' are added.
-# Specifying a line number with no code deletes that line from
-# the program.
-
-while 1:
-    try:
-        line = raw_input("[BASIC] ")
-    except EOFError:
-        raise SystemExit
-    if not line: continue
-    line += "\n"
-    prog = basparse.parse(line)
-    if not prog: continue
-
-    keys = prog.keys()
-    if keys[0] > 0:
-         b.add_statements(prog)
-    else:
-         stat = prog[keys[0]]
-         if stat[0] == 'RUN':
-             try:
-                 b.run()
-             except RuntimeError:
-                 pass
-         elif stat[0] == 'LIST':
-             b.list()
-         elif stat[0] == 'BLANK':
-             b.del_line(stat[1])
-         elif stat[0] == 'NEW':
-             b.new()
-
-  
-            
-
-
-
-
-
-
diff --git a/chall/ply-2.2/example/BASIC/basiclex.py b/chall/ply-2.2/example/BASIC/basiclex.py
deleted file mode 100644
index 463ef9b..0000000
--- a/chall/ply-2.2/example/BASIC/basiclex.py
+++ /dev/null
@@ -1,74 +0,0 @@
-# An implementation of Dartmouth BASIC (1964)
-
-from ply import *
-
-keywords = (
-    'LET','READ','DATA','PRINT','GOTO','IF','THEN','FOR','NEXT','TO','STEP',
-    'END','STOP','DEF','GOSUB','DIM','REM','RETURN','RUN','LIST','NEW',
-)
-
-tokens = keywords + (
-     'EQUALS','PLUS','MINUS','TIMES','DIVIDE','POWER',
-     'LPAREN','RPAREN','LT','LE','GT','GE','NE',
-     'COMMA','SEMI', 'INTEGER','FLOAT', 'STRING',
-     'ID','NEWLINE'
-)
-
-t_ignore = ' \t'
-
-def t_REM(t):
-    r'REM .*'
-    return t
-
-def t_ID(t):
-    r'[A-Z][A-Z0-9]*'
-    if t.value in keywords:
-        t.type = t.value
-    return t
-    
-t_EQUALS  = r'='
-t_PLUS    = r'\+'
-t_MINUS   = r'-'
-t_TIMES   = r'\*'
-t_POWER   = r'\^'
-t_DIVIDE  = r'/'
-t_LPAREN  = r'\('
-t_RPAREN  = r'\)'
-t_LT      = r'<'
-t_LE      = r'<='
-t_GT      = r'>'
-t_GE      = r'>='
-t_NE      = r'<>'
-t_COMMA   = r'\,'
-t_SEMI    = r';'
-t_INTEGER = r'\d+'    
-t_FLOAT   = r'((\d*\.\d+)(E[\+-]?\d+)?|([1-9]\d*E[\+-]?\d+))'
-t_STRING  = r'\".*?\"'
-
-def t_NEWLINE(t):
-    r'\n'
-    t.lexer.lineno += 1
-    return t
-
-def t_error(t):
-    print "Illegal character", t.value[0]
-    t.lexer.skip(1)
-
-lex.lex()
-
-
-
-
-
-
-
-       
-   
-  
-            
-
-
-
-
-
-
diff --git a/chall/ply-2.2/example/BASIC/basinterp.py b/chall/ply-2.2/example/BASIC/basinterp.py
deleted file mode 100644
index 0252aa3..0000000
--- a/chall/ply-2.2/example/BASIC/basinterp.py
+++ /dev/null
@@ -1,440 +0,0 @@
-# This file provides the runtime support for running a basic program
-# Assumes the program has been parsed using basparse.py
-
-import sys
-import math
-import random
-
-class BasicInterpreter:
-
-    # Initialize the interpreter. prog is a dictionary
-    # containing (line,statement) mappings
-    def __init__(self,prog):
-         self.prog = prog
-
-         self.functions = {           # Built-in function table
-             'SIN' : lambda z: math.sin(self.eval(z)),
-             'COS' : lambda z: math.cos(self.eval(z)),
-             'TAN' : lambda z: math.tan(self.eval(z)),
-             'ATN' : lambda z: math.atan(self.eval(z)),
-             'EXP' : lambda z: math.exp(self.eval(z)),
-             'ABS' : lambda z: abs(self.eval(z)),
-             'LOG' : lambda z: math.log(self.eval(z)),
-             'SQR' : lambda z: math.sqrt(self.eval(z)),
-             'INT' : lambda z: int(self.eval(z)),
-             'RND' : lambda z: random.random()
-         }
-
-    # Collect all data statements
-    def collect_data(self):
-         self.data = []
-         for lineno in self.stat:
-              if self.prog[lineno][0] == 'DATA':
-                  self.data = self.data + self.prog[lineno][1]
-         self.dc = 0                  # Initialize the data counter
-
-    # Check for end statements
-    def check_end(self):
-         has_end = 0
-         for lineno in self.stat:
-             if self.prog[lineno][0] == 'END' and not has_end:
-                  has_end = lineno
-         if not has_end:
-             print "NO END INSTRUCTION"
-             self.error = 1
-         if has_end != lineno:
-             print "END IS NOT LAST"
-             self.error = 1
-
-    # Check loops
-    def check_loops(self):
-         for pc in range(len(self.stat)):
-             lineno = self.stat[pc]
-             if self.prog[lineno][0] == 'FOR':
-                  forinst = self.prog[lineno]
-                  loopvar = forinst[1]
-                  for i in range(pc+1,len(self.stat)):
-                       if self.prog[self.stat[i]][0] == 'NEXT':
-                            nextvar = self.prog[self.stat[i]][1]
-                            if nextvar != loopvar: continue
-                            self.loopend[pc] = i
-                            break
-                  else:
-                       print "FOR WITHOUT NEXT AT LINE" % self.stat[pc]
-                       self.error = 1
-                  
-    # Evaluate an expression
-    def eval(self,expr):
-        etype = expr[0]
-        if etype == 'NUM': return expr[1]
-        elif etype == 'GROUP': return self.eval(expr[1])
-        elif etype == 'UNARY':
-             if expr[1] == '-': return -self.eval(expr[2])
-        elif etype == 'BINOP':
-             if expr[1] == '+': return self.eval(expr[2])+self.eval(expr[3])
-             elif expr[1] == '-': return self.eval(expr[2])-self.eval(expr[3])
-             elif expr[1] == '*': return self.eval(expr[2])*self.eval(expr[3])
-             elif expr[1] == '/': return float(self.eval(expr[2]))/self.eval(expr[3])
-             elif expr[1] == '^': return abs(self.eval(expr[2]))**self.eval(expr[3])
-        elif etype == 'VAR':
-             var,dim1,dim2 = expr[1]
-             if not dim1 and not dim2:
-                  if self.vars.has_key(var):
-                       return self.vars[var]
-                  else:
-                       print "UNDEFINED VARIABLE", var, "AT LINE", self.stat[self.pc]
-                       raise RuntimeError
-             # May be a list lookup or a function evaluation
-             if dim1 and not dim2:
-                if self.functions.has_key(var):
-                      # A function
-                      return self.functions[var](dim1)
-                else:
-                      # A list evaluation
-                      if self.lists.has_key(var):
-                            dim1val = self.eval(dim1)
-                            if dim1val < 1 or dim1val > len(self.lists[var]):
-                                 print "LIST INDEX OUT OF BOUNDS AT LINE", self.stat[self.pc]
-                                 raise RuntimeError
-                            return self.lists[var][dim1val-1]
-             if dim1 and dim2:
-                 if self.tables.has_key(var):
-                      dim1val = self.eval(dim1)
-                      dim2val = self.eval(dim2)
-                      if dim1val < 1 or dim1val > len(self.tables[var]) or dim2val < 1 or dim2val > len(self.tables[var][0]):
-                           print "TABLE INDEX OUT OUT BOUNDS AT LINE", self.stat[self.pc]
-                           raise RuntimeError
-                      return self.tables[var][dim1val-1][dim2val-1]
-             print "UNDEFINED VARIABLE", var, "AT LINE", self.stat[self.pc]
-             raise RuntimeError
-
-    # Evaluate a relational expression
-    def releval(self,expr):
-         etype = expr[1]
-         lhs   = self.eval(expr[2])
-         rhs   = self.eval(expr[3])
-         if etype == '<':
-             if lhs < rhs: return 1
-             else: return 0
-
-         elif etype == '<=':
-             if lhs <= rhs: return 1
-             else: return 0
-
-         elif etype == '>':
-             if lhs > rhs: return 1
-             else: return 0
-
-         elif etype == '>=':
-             if lhs >= rhs: return 1
-             else: return 0
-
-         elif etype == '=':
-             if lhs == rhs: return 1
-             else: return 0
-
-         elif etype == '<>':
-             if lhs != rhs: return 1
-             else: return 0
-
-    # Assignment
-    def assign(self,target,value):
-        var, dim1, dim2 = target
-        if not dim1 and not dim2:
-            self.vars[var] = self.eval(value)
-        elif dim1 and not dim2:
-            # List assignment
-            dim1val = self.eval(dim1)
-            if not self.lists.has_key(var):
-                 self.lists[var] = [0]*10
-
-            if dim1val > len(self.lists[var]):
-                 print "DIMENSION TOO LARGE AT LINE", self.stat[self.pc]
-                 raise RuntimeError
-            self.lists[var][dim1val-1] = self.eval(value)
-        elif dim1 and dim2:
-            dim1val = self.eval(dim1)
-            dim2val = self.eval(dim2)
-            if not self.tables.has_key(var):
-                 temp = [0]*10
-                 v = []
-                 for i in range(10): v.append(temp[:])
-                 self.tables[var] = v
-            # Variable already exists
-            if dim1val > len(self.tables[var]) or dim2val > len(self.tables[var][0]):
-                 print "DIMENSION TOO LARGE AT LINE", self.stat[self.pc]
-                 raise RuntimeError
-            self.tables[var][dim1val-1][dim2val-1] = self.eval(value)
-
-    # Change the current line number
-    def goto(self,linenum):
-         if not self.prog.has_key(linenum):
-              print "UNDEFINED LINE NUMBER %d AT LINE %d" % (linenum, self.stat[self.pc])
-              raise RuntimeError
-         self.pc = self.stat.index(linenum)
-
-    # Run it
-    def run(self):
-        self.vars   = { }            # All variables
-        self.lists  = { }            # List variables
-        self.tables = { }            # Tables
-        self.loops  = [ ]            # Currently active loops
-        self.loopend= { }            # Mapping saying where loops end
-        self.gosub  = None           # Gosub return point (if any)
-        self.error  = 0              # Indicates program error
-
-        self.stat = self.prog.keys()      # Ordered list of all line numbers
-        self.stat.sort()
-        self.pc = 0                  # Current program counter
-
-        # Processing prior to running
-
-        self.collect_data()          # Collect all of the data statements
-        self.check_end()
-        self.check_loops()
-
-        if self.error: raise RuntimeError
-
-        while 1:
-            line  = self.stat[self.pc]
-            instr = self.prog[line]
-            
-            op = instr[0]
-
-            # END and STOP statements
-            if op == 'END' or op == 'STOP':
-                 break           # We're done
-
-            # GOTO statement
-            elif op == 'GOTO':
-                 newline = instr[1]
-                 self.goto(newline)
-                 continue
-
-            # PRINT statement
-            elif op == 'PRINT':
-                 plist = instr[1]
-                 out = ""
-                 for label,val in plist:
-                     if out:
-                          out += ' '*(15 - (len(out) % 15))
-                     out += label
-                     if val:
-                          if label: out += " "
-                          eval = self.eval(val)
-                          out += str(eval)
-                 sys.stdout.write(out)
-                 end = instr[2]
-                 if not (end == ',' or end == ';'): 
-                     sys.stdout.write("\n")
-                 if end == ',': sys.stdout.write(" "*(15-(len(out) % 15)))
-                 if end == ';': sys.stdout.write(" "*(3-(len(out) % 3)))
-                     
-            # LET statement
-            elif op == 'LET':
-                 target = instr[1]
-                 value  = instr[2]
-                 self.assign(target,value)
-
-            # READ statement
-            elif op == 'READ':
-                 for target in instr[1]:
-                      if self.dc < len(self.data):
-                          value = ('NUM',self.data[self.dc])
-                          self.assign(target,value)
-                          self.dc += 1
-                      else:
-                          # No more data.  Program ends
-                          return
-            elif op == 'IF':
-                 relop = instr[1]
-                 newline = instr[2]
-                 if (self.releval(relop)):
-                     self.goto(newline)
-                     continue
-
-            elif op == 'FOR':
-                 loopvar = instr[1]
-                 initval = instr[2]
-                 finval  = instr[3]
-                 stepval = instr[4]
-              
-                 # Check to see if this is a new loop
-                 if not self.loops or self.loops[-1][0] != self.pc:
-                        # Looks like a new loop. Make the initial assignment
-                        newvalue = initval
-                        self.assign((loopvar,None,None),initval)
-                        if not stepval: stepval = ('NUM',1)
-                        stepval = self.eval(stepval)    # Evaluate step here
-                        self.loops.append((self.pc,stepval))
-                 else:
-                        # It's a repeat of the previous loop
-                        # Update the value of the loop variable according to the step
-                        stepval = ('NUM',self.loops[-1][1])
-                        newvalue = ('BINOP','+',('VAR',(loopvar,None,None)),stepval)
-
-                 if self.loops[-1][1] < 0: relop = '>='
-                 else: relop = '<='
-                 if not self.releval(('RELOP',relop,newvalue,finval)):
-                      # Loop is done. Jump to the NEXT
-                      self.pc = self.loopend[self.pc]
-                      self.loops.pop()
-                 else:
-                      self.assign((loopvar,None,None),newvalue)
-
-            elif op == 'NEXT':
-                 if not self.loops:
-                       print "NEXT WITHOUT FOR AT LINE",line
-                       return
- 
-                 nextvar = instr[1]
-                 self.pc = self.loops[-1][0]
-                 loopinst = self.prog[self.stat[self.pc]]
-                 forvar = loopinst[1]
-                 if nextvar != forvar:
-                       print "NEXT DOESN'T MATCH FOR AT LINE", line
-                       return
-                 continue
-            elif op == 'GOSUB':
-                 newline = instr[1]
-                 if self.gosub:
-                       print "ALREADY IN A SUBROUTINE AT LINE", line
-                       return
-                 self.gosub = self.stat[self.pc]
-                 self.goto(newline)
-                 continue
-
-            elif op == 'RETURN':
-                 if not self.gosub:
-                      print "RETURN WITHOUT A GOSUB AT LINE",line
-                      return
-                 self.goto(self.gosub)
-                 self.gosub = None
-
-            elif op == 'FUNC':
-                 fname = instr[1]
-                 pname = instr[2]
-                 expr  = instr[3]
-                 def eval_func(pvalue,name=pname,self=self,expr=expr):
-                      self.assign((pname,None,None),pvalue)
-                      return self.eval(expr)
-                 self.functions[fname] = eval_func
-
-            elif op == 'DIM':
-                 for vname,x,y in instr[1]:
-                     if y == 0:
-                          # Single dimension variable
-                          self.lists[vname] = [0]*x
-                     else:
-                          # Double dimension variable
-                          temp = [0]*y
-                          v = []
-                          for i in range(x):
-                              v.append(temp[:])
-                          self.tables[vname] = v
-
-            self.pc += 1         
-
-    # Utility functions for program listing
-    def expr_str(self,expr):
-        etype = expr[0]
-        if etype == 'NUM': return str(expr[1])
-        elif etype == 'GROUP': return "(%s)" % self.expr_str(expr[1])
-        elif etype == 'UNARY':
-             if expr[1] == '-': return "-"+str(expr[2])
-        elif etype == 'BINOP':
-             return "%s %s %s" % (self.expr_str(expr[2]),expr[1],self.expr_str(expr[3]))
-        elif etype == 'VAR':
-              return self.var_str(expr[1])
-
-    def relexpr_str(self,expr):
-         return "%s %s %s" % (self.expr_str(expr[2]),expr[1],self.expr_str(expr[3]))
-
-    def var_str(self,var):
-         varname,dim1,dim2 = var
-         if not dim1 and not dim2: return varname
-         if dim1 and not dim2: return "%s(%s)" % (varname, self.expr_str(dim1))
-         return "%s(%s,%s)" % (varname, self.expr_str(dim1),self.expr_str(dim2))
-
-    # Create a program listing
-    def list(self):
-         stat = self.prog.keys()      # Ordered list of all line numbers
-         stat.sort()
-         for line in stat:
-             instr = self.prog[line]
-             op = instr[0]
-             if op in ['END','STOP','RETURN']:
-                   print line, op
-                   continue
-             elif op == 'REM':
-                   print line, instr[1]
-             elif op == 'PRINT':
-                   print line, op, 
-                   first = 1
-                   for p in instr[1]:
-                         if not first: print ",",
-                         if p[0] and p[1]: print '"%s"%s' % (p[0],self.expr_str(p[1])),
-                         elif p[1]: print self.expr_str(p[1]),
-                         else: print '"%s"' % (p[0],),
-                         first = 0
-                   if instr[2]: print instr[2]
-                   else: print
-             elif op == 'LET':
-                   print line,"LET",self.var_str(instr[1]),"=",self.expr_str(instr[2])
-             elif op == 'READ':
-                   print line,"READ",
-                   first = 1
-                   for r in instr[1]:
-                         if not first: print ",",
-                         print self.var_str(r),
-                         first = 0
-                   print ""
-             elif op == 'IF':
-                   print line,"IF %s THEN %d" % (self.relexpr_str(instr[1]),instr[2])
-             elif op == 'GOTO' or op == 'GOSUB':
-                   print line, op, instr[1]
-             elif op == 'FOR':
-                   print line,"FOR %s = %s TO %s" % (instr[1],self.expr_str(instr[2]),self.expr_str(instr[3])),
-                   if instr[4]: print "STEP %s" % (self.expr_str(instr[4])),
-                   print
-             elif op == 'NEXT':
-                   print line,"NEXT", instr[1]
-             elif op == 'FUNC':
-                   print line,"DEF %s(%s) = %s" % (instr[1],instr[2],self.expr_str(instr[3]))
-             elif op == 'DIM':
-                   print line,"DIM",
-                   first = 1
-                   for vname,x,y in instr[1]:
-                         if not first: print ",",
-                         first = 0
-                         if y == 0:
-                               print "%s(%d)" % (vname,x),
-                         else:
-                               print "%s(%d,%d)" % (vname,x,y),
-                         
-                   print 
-             elif op == 'DATA':
-                   print line,"DATA",
-                   first = 1
-                   for v in instr[1]:
-                        if not first: print ",",
-                        first = 0
-                        print v,
-                   print
-
-    # Erase the current program
-    def new(self):
-         self.prog = {}
- 
-    # Insert statements
-    def add_statements(self,prog):
-         for line,stat in prog.items():
-              self.prog[line] = stat
-
-    # Delete a statement
-    def del_line(self,lineno):
-         try:
-             del self.prog[lineno]
-         except KeyError:
-             pass
-
diff --git a/chall/ply-2.2/example/BASIC/basparse.py b/chall/ply-2.2/example/BASIC/basparse.py
deleted file mode 100644
index 79210ad..0000000
--- a/chall/ply-2.2/example/BASIC/basparse.py
+++ /dev/null
@@ -1,424 +0,0 @@
-# An implementation of Dartmouth BASIC (1964)
-#
-
-from ply import *
-import basiclex
-
-tokens = basiclex.tokens
-
-precedence = (
-               ('left', 'PLUS','MINUS'),
-               ('left', 'TIMES','DIVIDE'),
-               ('left', 'POWER'),
-               ('right','UMINUS')
-)
-
-#### A BASIC program is a series of statements.  We represent the program as a
-#### dictionary of tuples indexed by line number.
-
-def p_program(p):
-    '''program : program statement
-               | statement'''
-
-    if len(p) == 2 and p[1]:
-       p[0] = { }
-       line,stat = p[1]
-       p[0][line] = stat
-    elif len(p) ==3:
-       p[0] = p[1]
-       if not p[0]: p[0] = { }
-       if p[2]:
-           line,stat = p[2]
-           p[0][line] = stat
-
-#### This catch-all rule is used for any catastrophic errors.  In this case,
-#### we simply return nothing
-
-def p_program_error(p):
-    '''program : error'''
-    p[0] = None
-    p.parser.error = 1
-
-#### Format of all BASIC statements. 
-
-def p_statement(p):
-    '''statement : INTEGER command NEWLINE'''
-    if isinstance(p[2],str):
-        print p[2],"AT LINE", p[1]
-        p[0] = None
-        p.parser.error = 1
-    else:
-        lineno = int(p[1])
-        p[0] = (lineno,p[2])
-
-#### Interactive statements.
-
-def p_statement_interactive(p):
-    '''statement : RUN NEWLINE
-                 | LIST NEWLINE
-                 | NEW NEWLINE'''
-    p[0] = (0, (p[1],0))
-
-#### Blank line number
-def p_statement_blank(p):
-    '''statement : INTEGER NEWLINE'''
-    p[0] = (0,('BLANK',int(p[1])))
-
-#### Error handling for malformed statements
-
-def p_statement_bad(p):
-    '''statement : INTEGER error NEWLINE'''
-    print "MALFORMED STATEMENT AT LINE", p[1]
-    p[0] = None
-    p.parser.error = 1
-
-#### Blank line
-
-def p_statement_newline(p):
-    '''statement : NEWLINE'''
-    p[0] = None
-
-#### LET statement
-
-def p_command_let(p):
-    '''command : LET variable EQUALS expr'''
-    p[0] = ('LET',p[2],p[4])
-
-def p_command_let_bad(p):
-    '''command : LET variable EQUALS error'''
-    p[0] = "BAD EXPRESSION IN LET"
-
-#### READ statement
-
-def p_command_read(p):
-    '''command : READ varlist'''
-    p[0] = ('READ',p[2])
-
-def p_command_read_bad(p):
-    '''command : READ error'''
-    p[0] = "MALFORMED VARIABLE LIST IN READ"
-
-#### DATA statement
-
-def p_command_data(p):
-    '''command : DATA numlist'''
-    p[0] = ('DATA',p[2])
-
-def p_command_data_bad(p):
-    '''command : DATA error'''
-    p[0] = "MALFORMED NUMBER LIST IN DATA"
-
-#### PRINT statement
-
-def p_command_print(p):
-    '''command : PRINT plist optend'''
-    p[0] = ('PRINT',p[2],p[3])
-
-def p_command_print_bad(p):
-    '''command : PRINT error'''
-    p[0] = "MALFORMED PRINT STATEMENT"
-
-#### Optional ending on PRINT. Either a comma (,) or semicolon (;)
-
-def p_optend(p):
-    '''optend : COMMA 
-              | SEMI
-              |'''
-    if len(p)  == 2:
-         p[0] = p[1]
-    else:
-         p[0] = None
-
-#### PRINT statement with no arguments
-
-def p_command_print_empty(p):
-    '''command : PRINT'''
-    p[0] = ('PRINT',[],None)
-
-#### GOTO statement
-
-def p_command_goto(p):
-    '''command : GOTO INTEGER'''
-    p[0] = ('GOTO',int(p[2]))
-
-def p_command_goto_bad(p):
-    '''command : GOTO error'''
-    p[0] = "INVALID LINE NUMBER IN GOTO"
-
-#### IF-THEN statement
-
-def p_command_if(p):
-    '''command : IF relexpr THEN INTEGER'''
-    p[0] = ('IF',p[2],int(p[4]))
-
-def p_command_if_bad(p):
-    '''command : IF error THEN INTEGER'''
-    p[0] = "BAD RELATIONAL EXPRESSION"
-
-def p_command_if_bad2(p):
-    '''command : IF relexpr THEN error'''
-    p[0] = "INVALID LINE NUMBER IN THEN"
-
-#### FOR statement
-
-def p_command_for(p):
-    '''command : FOR ID EQUALS expr TO expr optstep'''
-    p[0] = ('FOR',p[2],p[4],p[6],p[7])
-
-def p_command_for_bad_initial(p):
-    '''command : FOR ID EQUALS error TO expr optstep'''
-    p[0] = "BAD INITIAL VALUE IN FOR STATEMENT"
-
-def p_command_for_bad_final(p):
-    '''command : FOR ID EQUALS expr TO error optstep'''
-    p[0] = "BAD FINAL VALUE IN FOR STATEMENT"
-
-def p_command_for_bad_step(p):
-    '''command : FOR ID EQUALS expr TO expr STEP error'''
-    p[0] = "MALFORMED STEP IN FOR STATEMENT"
-
-#### Optional STEP qualifier on FOR statement
-
-def p_optstep(p):
-    '''optstep : STEP expr
-               | empty'''
-    if len(p) == 3:
-       p[0] = p[2]
-    else:
-       p[0] = None
-
-#### NEXT statement
-    
-def p_command_next(p):
-    '''command : NEXT ID'''
-
-    p[0] = ('NEXT',p[2])
-
-def p_command_next_bad(p):
-    '''command : NEXT error'''
-    p[0] = "MALFORMED NEXT"
-
-#### END statement
-
-def p_command_end(p):
-    '''command : END'''
-    p[0] = ('END',)
-
-#### REM statement
-
-def p_command_rem(p):
-    '''command : REM'''
-    p[0] = ('REM',p[1])
-
-#### STOP statement
-
-def p_command_stop(p):
-    '''command : STOP'''
-    p[0] = ('STOP',)
-
-#### DEF statement
-
-def p_command_def(p):
-    '''command : DEF ID LPAREN ID RPAREN EQUALS expr'''
-    p[0] = ('FUNC',p[2],p[4],p[7])
-
-def p_command_def_bad_rhs(p):
-    '''command : DEF ID LPAREN ID RPAREN EQUALS error'''
-    p[0] = "BAD EXPRESSION IN DEF STATEMENT"
-
-def p_command_def_bad_arg(p):
-    '''command : DEF ID LPAREN error RPAREN EQUALS expr'''
-    p[0] = "BAD ARGUMENT IN DEF STATEMENT"
-
-#### GOSUB statement
-
-def p_command_gosub(p):
-    '''command : GOSUB INTEGER'''
-    p[0] = ('GOSUB',int(p[2]))
-
-def p_command_gosub_bad(p):
-    '''command : GOSUB error'''
-    p[0] = "INVALID LINE NUMBER IN GOSUB"
-
-#### RETURN statement
-
-def p_command_return(p):
-    '''command : RETURN'''
-    p[0] = ('RETURN',)
-
-#### DIM statement
-
-def p_command_dim(p):
-    '''command : DIM dimlist'''
-    p[0] = ('DIM',p[2])
-
-def p_command_dim_bad(p):
-    '''command : DIM error'''
-    p[0] = "MALFORMED VARIABLE LIST IN DIM"
-
-#### List of variables supplied to DIM statement
-
-def p_dimlist(p):
-    '''dimlist : dimlist COMMA dimitem
-               | dimitem'''
-    if len(p) == 4:
-        p[0] = p[1]
-        p[0].append(p[3])
-    else:
-        p[0] = [p[1]]
-
-#### DIM items
-
-def p_dimitem_single(p):
-    '''dimitem : ID LPAREN INTEGER RPAREN'''
-    p[0] = (p[1],eval(p[3]),0)
-
-def p_dimitem_double(p):
-    '''dimitem : ID LPAREN INTEGER COMMA INTEGER RPAREN'''
-    p[0] = (p[1],eval(p[3]),eval(p[5]))
-
-#### Arithmetic expressions
-
-def p_expr_binary(p):
-    '''expr : expr PLUS expr
-            | expr MINUS expr
-            | expr TIMES expr
-            | expr DIVIDE expr
-            | expr POWER expr'''
-
-    p[0] = ('BINOP',p[2],p[1],p[3])
-
-def p_expr_number(p):
-    '''expr : INTEGER
-            | FLOAT'''
-    p[0] = ('NUM',eval(p[1]))
-
-def p_expr_variable(p):
-    '''expr : variable'''
-    p[0] = ('VAR',p[1])
-
-def p_expr_group(p):
-    '''expr : LPAREN expr RPAREN'''
-    p[0] = ('GROUP',p[2])
-
-def p_expr_unary(p):
-    '''expr : MINUS expr %prec UMINUS'''
-    p[0] = ('UNARY','-',p[2])
-
-#### Relational expressions
-
-def p_relexpr(p):
-    '''relexpr : expr LT expr
-               | expr LE expr
-               | expr GT expr
-               | expr GE expr
-               | expr EQUALS expr
-               | expr NE expr'''
-    p[0] = ('RELOP',p[2],p[1],p[3])
-
-#### Variables
-
-def p_variable(p):
-    '''variable : ID
-              | ID LPAREN expr RPAREN
-              | ID LPAREN expr COMMA expr RPAREN'''
-    if len(p) == 2:
-       p[0] = (p[1],None,None)
-    elif len(p) == 5:
-       p[0] = (p[1],p[3],None)
-    else:
-       p[0] = (p[1],p[3],p[5])
-
-#### Builds a list of variable targets as a Python list
-
-def p_varlist(p):
-    '''varlist : varlist COMMA variable
-               | variable'''
-    if len(p) > 2:
-       p[0] = p[1]
-       p[0].append(p[3])
-    else:
-       p[0] = [p[1]]
-
-
-#### Builds a list of numbers as a Python list
-
-def p_numlist(p):
-    '''numlist : numlist COMMA number
-               | number'''
-
-    if len(p) > 2:
-       p[0] = p[1]
-       p[0].append(p[3])
-    else:
-       p[0] = [p[1]]
-
-#### A number. May be an integer or a float
-
-def p_number(p):
-    '''number  : INTEGER
-               | FLOAT'''
-    p[0] = eval(p[1])
-
-#### A signed number.
-
-def p_number_signed(p):
-    '''number  : MINUS INTEGER
-               | MINUS FLOAT'''
-    p[0] = eval("-"+p[2])
-
-#### List of targets for a print statement
-#### Returns a list of tuples (label,expr)
-
-def p_plist(p):
-    '''plist   : plist COMMA pitem
-               | pitem'''
-    if len(p) > 3:
-       p[0] = p[1]
-       p[0].append(p[3])
-    else:
-       p[0] = [p[1]]
-
-def p_item_string(p):
-    '''pitem : STRING'''
-    p[0] = (p[1][1:-1],None)
-
-def p_item_string_expr(p):
-    '''pitem : STRING expr'''
-    p[0] = (p[1][1:-1],p[2])
-
-def p_item_expr(p):
-    '''pitem : expr'''
-    p[0] = ("",p[1])
-
-#### Empty
-   
-def p_empty(p):
-    '''empty : '''
-
-#### Catastrophic error handler
-def p_error(p):
-    if not p:
-        print "SYNTAX ERROR AT EOF"
-
-bparser = yacc.yacc()
-
-def parse(data):
-    bparser.error = 0
-    p = bparser.parse(data)
-    if bparser.error: return None
-    return p
-
-
-
-
-       
-   
-  
-            
-
-
-
-
-
-
diff --git a/chall/ply-2.2/example/BASIC/dim.bas b/chall/ply-2.2/example/BASIC/dim.bas
deleted file mode 100644
index 87bd95b..0000000
--- a/chall/ply-2.2/example/BASIC/dim.bas
+++ /dev/null
@@ -1,14 +0,0 @@
-5 DIM A(50,15)
-10 FOR I = 1 TO 50
-20 FOR J = 1 TO 15
-30   LET A(I,J) = I + J
-35 REM  PRINT I,J, A(I,J)
-40 NEXT J
-50 NEXT I
-100 FOR I = 1 TO 50
-110 FOR J = 1 TO 15
-120   PRINT A(I,J),
-130 NEXT J
-140 PRINT 
-150 NEXT I
-999 END
diff --git a/chall/ply-2.2/example/BASIC/func.bas b/chall/ply-2.2/example/BASIC/func.bas
deleted file mode 100644
index 447ee16..0000000
--- a/chall/ply-2.2/example/BASIC/func.bas
+++ /dev/null
@@ -1,5 +0,0 @@
-10 DEF FDX(X) = 2*X
-20 FOR I = 0 TO 100
-30 PRINT FDX(I)
-40 NEXT I
-50 END
diff --git a/chall/ply-2.2/example/BASIC/gcd.bas b/chall/ply-2.2/example/BASIC/gcd.bas
deleted file mode 100644
index d0b7746..0000000
--- a/chall/ply-2.2/example/BASIC/gcd.bas
+++ /dev/null
@@ -1,22 +0,0 @@
-10 PRINT "A","B","C","GCD"
-20 READ A,B,C
-30 LET X = A
-40 LET Y = B
-50 GOSUB 200
-60 LET X = G
-70 LET Y = C
-80 GOSUB 200
-90 PRINT A, B, C, G
-100 GOTO 20
-110 DATA 60, 90, 120
-120 DATA 38456, 64872, 98765
-130 DATA 32, 384, 72
-200 LET Q = INT(X/Y)
-210 LET R = X - Q*Y
-220 IF R = 0 THEN 300
-230 LET X = Y
-240 LET Y = R
-250 GOTO 200
-300 LET G = Y
-310 RETURN
-999 END
diff --git a/chall/ply-2.2/example/BASIC/gosub.bas b/chall/ply-2.2/example/BASIC/gosub.bas
deleted file mode 100644
index 99737b1..0000000
--- a/chall/ply-2.2/example/BASIC/gosub.bas
+++ /dev/null
@@ -1,13 +0,0 @@
-100 LET X = 3
-110 GOSUB 400
-120 PRINT U, V, W
-200 LET X = 5
-210 GOSUB 400
-220 LET Z = U + 2*V + 3*W
-230 PRINT Z
-240 GOTO 999
-400 LET U = X*X
-410 LET V = X*X*X
-420 LET W = X*X*X*X + X*X*X + X*X + X
-430 RETURN
-999 END
diff --git a/chall/ply-2.2/example/BASIC/hello.bas b/chall/ply-2.2/example/BASIC/hello.bas
deleted file mode 100644
index cc6f0b0..0000000
--- a/chall/ply-2.2/example/BASIC/hello.bas
+++ /dev/null
@@ -1,4 +0,0 @@
-5  REM HELLO WORLD PROGAM
-10 PRINT "HELLO WORLD"
-99 END
-
diff --git a/chall/ply-2.2/example/BASIC/linear.bas b/chall/ply-2.2/example/BASIC/linear.bas
deleted file mode 100644
index 56c0822..0000000
--- a/chall/ply-2.2/example/BASIC/linear.bas
+++ /dev/null
@@ -1,17 +0,0 @@
-1  REM ::: SOLVE A SYSTEM OF LINEAR EQUATIONS
-2  REM ::: A1*X1 + A2*X2 = B1
-3  REM ::: A3*X1 + A4*X2 = B2
-4  REM --------------------------------------
-10 READ A1, A2, A3, A4
-15 LET D = A1 * A4 - A3 * A2
-20 IF D = 0 THEN 65
-30 READ B1, B2
-37 LET X1 = (B1*A4 - B2*A2) / D
-42 LET X2 = (A1*B2 - A3*B1) / D
-55 PRINT X1, X2
-60 GOTO 30
-65 PRINT "NO UNIQUE SOLUTION"
-70 DATA 1, 2, 4
-80 DATA 2, -7, 5
-85 DATA 1, 3, 4, -7
-90 END
diff --git a/chall/ply-2.2/example/BASIC/maxsin.bas b/chall/ply-2.2/example/BASIC/maxsin.bas
deleted file mode 100644
index b969015..0000000
--- a/chall/ply-2.2/example/BASIC/maxsin.bas
+++ /dev/null
@@ -1,12 +0,0 @@
-5 PRINT "X VALUE", "SINE", "RESOLUTION"
-10 READ D
-20 LET M = -1
-30 FOR X = 0 TO 3 STEP D
-40 IF SIN(X) <= M THEN 80
-50 LET X0 = X
-60 LET M = SIN(X)
-80 NEXT X
-85 PRINT X0, M, D
-90 GOTO 10
-100 DATA .1, .01, .001
-110 END
diff --git a/chall/ply-2.2/example/BASIC/powers.bas b/chall/ply-2.2/example/BASIC/powers.bas
deleted file mode 100644
index a454dc3..0000000
--- a/chall/ply-2.2/example/BASIC/powers.bas
+++ /dev/null
@@ -1,13 +0,0 @@
-5 PRINT "THIS PROGRAM COMPUTES AND PRINTS THE NTH POWERS"
-6 PRINT "OF THE NUMBERS LESS THAN OR EQUAL TO N FOR VARIOUS"
-7 PRINT "N FROM 1 THROUGH 7"
-8 PRINT
-10 FOR N = 1 TO 7
-15 PRINT "N = "N
-20 FOR I = 1 TO N
-30 PRINT I^N,
-40 NEXT I
-50 PRINT
-60 PRINT
-70 NEXT N
-80 END
diff --git a/chall/ply-2.2/example/BASIC/rand.bas b/chall/ply-2.2/example/BASIC/rand.bas
deleted file mode 100644
index 4ff7a14..0000000
--- a/chall/ply-2.2/example/BASIC/rand.bas
+++ /dev/null
@@ -1,4 +0,0 @@
-10 FOR I = 1 TO 20
-20 PRINT INT(10*RND(0))
-30 NEXT I
-40 END
diff --git a/chall/ply-2.2/example/BASIC/sales.bas b/chall/ply-2.2/example/BASIC/sales.bas
deleted file mode 100644
index a39aefb..0000000
--- a/chall/ply-2.2/example/BASIC/sales.bas
+++ /dev/null
@@ -1,20 +0,0 @@
-10 FOR I = 1 TO 3
-20 READ P(I)
-30 NEXT I
-40 FOR I = 1 TO 3
-50 FOR J = 1 TO 5
-60 READ S(I,J)
-70 NEXT J
-80 NEXT I
-90 FOR J = 1 TO 5
-100 LET S = 0
-110 FOR I = 1 TO 3
-120 LET S = S + P(I) * S(I,J)
-130 NEXT I
-140 PRINT "TOTAL SALES FOR SALESMAN"J, "$"S
-150 NEXT J
-200 DATA 1.25, 4.30, 2.50
-210 DATA 40, 20, 37, 29, 42
-220 DATA 10, 16, 3, 21, 8
-230 DATA 35, 47, 29, 16, 33
-300 END
diff --git a/chall/ply-2.2/example/BASIC/sears.bas b/chall/ply-2.2/example/BASIC/sears.bas
deleted file mode 100644
index 5ced397..0000000
--- a/chall/ply-2.2/example/BASIC/sears.bas
+++ /dev/null
@@ -1,18 +0,0 @@
-1 REM :: THIS PROGRAM COMPUTES HOW MANY TIMES YOU HAVE TO FOLD
-2 REM :: A PIECE OF PAPER SO THAT IT IS TALLER THAN THE
-3 REM :: SEARS TOWER.
-4 REM ::       S = HEIGHT OF TOWER (METERS)
-5 REM ::       T = THICKNESS OF PAPER (MILLIMETERS)
-10 LET S = 442
-20 LET T = 0.1
-30 REM CONVERT T TO METERS
-40 LET T = T * .001
-50 LET F = 1
-60 LET H = T
-100 IF H > S THEN 200
-120 LET H = 2 * H
-125 LET F = F + 1
-130 GOTO 100
-200 PRINT "NUMBER OF FOLDS ="F
-220 PRINT "FINAL HEIGHT    ="H
-999 END
diff --git a/chall/ply-2.2/example/BASIC/sqrt1.bas b/chall/ply-2.2/example/BASIC/sqrt1.bas
deleted file mode 100644
index 6673a91..0000000
--- a/chall/ply-2.2/example/BASIC/sqrt1.bas
+++ /dev/null
@@ -1,5 +0,0 @@
-10 LET X = 0
-20 LET X = X + 1
-30 PRINT X, SQR(X)
-40 IF X < 100 THEN 20
-50 END
diff --git a/chall/ply-2.2/example/BASIC/sqrt2.bas b/chall/ply-2.2/example/BASIC/sqrt2.bas
deleted file mode 100644
index 862d85e..0000000
--- a/chall/ply-2.2/example/BASIC/sqrt2.bas
+++ /dev/null
@@ -1,4 +0,0 @@
-10 FOR X = 1 TO 100
-20 PRINT X, SQR(X)
-30 NEXT X
-40 END
diff --git a/chall/ply-2.2/example/GardenSnake/GardenSnake.py b/chall/ply-2.2/example/GardenSnake/GardenSnake.py
deleted file mode 100644
index 2a7f45e..0000000
--- a/chall/ply-2.2/example/GardenSnake/GardenSnake.py
+++ /dev/null
@@ -1,709 +0,0 @@
-# GardenSnake - a parser generator demonstration program
-#
-# This implements a modified version of a subset of Python:
-#  - only 'def', 'return' and 'if' statements
-#  - 'if' only has 'then' clause (no elif nor else)
-#  - single-quoted strings only, content in raw format
-#  - numbers are decimal.Decimal instances (not integers or floats)
-#  - no print statment; use the built-in 'print' function
-#  - only < > == + - / * implemented (and unary + -)
-#  - assignment and tuple assignment work
-#  - no generators of any sort
-#  - no ... well, no quite a lot
-
-# Why?  I'm thinking about a new indentation-based configuration
-# language for a project and wanted to figure out how to do it.  Once
-# I got that working I needed a way to test it out.  My original AST
-# was dumb so I decided to target Python's AST and compile it into
-# Python code.  Plus, it's pretty cool that it only took a day or so
-# from sitting down with Ply to having working code.
-
-# This uses David Beazley's Ply from http://www.dabeaz.com/ply/
-
-# This work is hereby released into the Public Domain. To view a copy of
-# the public domain dedication, visit
-# http://creativecommons.org/licenses/publicdomain/ or send a letter to
-# Creative Commons, 543 Howard Street, 5th Floor, San Francisco,
-# California, 94105, USA.
-#
-# Portions of this work are derived from Python's Grammar definition
-# and may be covered under the Python copyright and license
-#
-#          Andrew Dalke / Dalke Scientific Software, LLC
-#             30 August 2006 / Cape Town, South Africa
-
-# Changelog:
-#  30 August - added link to CC license; removed the "swapcase" encoding
-
-# Modifications for inclusion in PLY distribution
-import sys
-sys.path.insert(0,"../..")
-from ply import *
-
-##### Lexer ######
-#import lex
-import decimal
-
-tokens = (
-    'DEF',
-    'IF',
-    'NAME',
-    'NUMBER',  # Python decimals
-    'STRING',  # single quoted strings only; syntax of raw strings
-    'LPAR',
-    'RPAR',
-    'COLON',
-    'EQ',
-    'ASSIGN',
-    'LT',
-    'GT',
-    'PLUS',
-    'MINUS',
-    'MULT',
-    'DIV',
-    'RETURN',
-    'WS',
-    'NEWLINE',
-    'COMMA',
-    'SEMICOLON',
-    'INDENT',
-    'DEDENT',
-    'ENDMARKER',
-    )
-
-#t_NUMBER = r'\d+'
-# taken from decmial.py but without the leading sign
-def t_NUMBER(t):
-    r"""(\d+(\.\d*)?|\.\d+)([eE][-+]? \d+)?"""
-    t.value = decimal.Decimal(t.value)
-    return t
-
-def t_STRING(t):
-    r"'([^\\']+|\\'|\\\\)*'"  # I think this is right ...
-    t.value=t.value[1:-1].decode("string-escape") # .swapcase() # for fun
-    return t
-
-t_COLON = r':'
-t_EQ = r'=='
-t_ASSIGN = r'='
-t_LT = r'<'
-t_GT = r'>'
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_MULT = r'\*'
-t_DIV = r'/'
-t_COMMA = r','
-t_SEMICOLON = r';'
-
-# Ply nicely documented how to do this.
-
-RESERVED = {
-  "def": "DEF",
-  "if": "IF",
-  "return": "RETURN",
-  }
-
-def t_NAME(t):
-    r'[a-zA-Z_][a-zA-Z0-9_]*'
-    t.type = RESERVED.get(t.value, "NAME")
-    return t
-
-# Putting this before t_WS let it consume lines with only comments in
-# them so the latter code never sees the WS part.  Not consuming the
-# newline.  Needed for "if 1: #comment"
-def t_comment(t):
-    r"[ ]*\043[^\n]*"  # \043 is '#'
-    pass
-
-
-# Whitespace
-def t_WS(t):
-    r' [ ]+ '
-    if t.lexer.at_line_start and t.lexer.paren_count == 0:
-        return t
-
-# Don't generate newline tokens when inside of parenthesis, eg
-#   a = (1,
-#        2, 3)
-def t_newline(t):
-    r'\n+'
-    t.lexer.lineno += len(t.value)
-    t.type = "NEWLINE"
-    if t.lexer.paren_count == 0:
-        return t
-
-def t_LPAR(t):
-    r'\('
-    t.lexer.paren_count += 1
-    return t
-
-def t_RPAR(t):
-    r'\)'
-    # check for underflow?  should be the job of the parser
-    t.lexer.paren_count -= 1
-    return t
-
-
-def t_error(t):
-    raise SyntaxError("Unknown symbol %r" % (t.value[0],))
-    print "Skipping", repr(t.value[0])
-    t.lexer.skip(1)
-
-## I implemented INDENT / DEDENT generation as a post-processing filter
-
-# The original lex token stream contains WS and NEWLINE characters.
-# WS will only occur before any other tokens on a line.
-
-# I have three filters.  One tags tokens by adding two attributes.
-# "must_indent" is True if the token must be indented from the
-# previous code.  The other is "at_line_start" which is True for WS
-# and the first non-WS/non-NEWLINE on a line.  It flags the check so
-# see if the new line has changed indication level.
-
-# Python's syntax has three INDENT states
-#  0) no colon hence no need to indent
-#  1) "if 1: go()" - simple statements have a COLON but no need for an indent
-#  2) "if 1:\n  go()" - complex statements have a COLON NEWLINE and must indent
-NO_INDENT = 0
-MAY_INDENT = 1
-MUST_INDENT = 2
-
-# only care about whitespace at the start of a line
-def track_tokens_filter(lexer, tokens):
-    lexer.at_line_start = at_line_start = True
-    indent = NO_INDENT
-    saw_colon = False
-    for token in tokens:
-        token.at_line_start = at_line_start
-
-        if token.type == "COLON":
-            at_line_start = False
-            indent = MAY_INDENT
-            token.must_indent = False
-            
-        elif token.type == "NEWLINE":
-            at_line_start = True
-            if indent == MAY_INDENT:
-                indent = MUST_INDENT
-            token.must_indent = False
-
-        elif token.type == "WS":
-            assert token.at_line_start == True
-            at_line_start = True
-            token.must_indent = False
-
-        else:
-            # A real token; only indent after COLON NEWLINE
-            if indent == MUST_INDENT:
-                token.must_indent = True
-            else:
-                token.must_indent = False
-            at_line_start = False
-            indent = NO_INDENT
-
-        yield token
-        lexer.at_line_start = at_line_start
-
-def _new_token(type, lineno):
-    tok = lex.LexToken()
-    tok.type = type
-    tok.value = None
-    tok.lineno = lineno
-    return tok
-
-# Synthesize a DEDENT tag
-def DEDENT(lineno):
-    return _new_token("DEDENT", lineno)
-
-# Synthesize an INDENT tag
-def INDENT(lineno):
-    return _new_token("INDENT", lineno)
-
-
-# Track the indentation level and emit the right INDENT / DEDENT events.
-def indentation_filter(tokens):
-    # A stack of indentation levels; will never pop item 0
-    levels = [0]
-    token = None
-    depth = 0
-    prev_was_ws = False
-    for token in tokens:
-##        if 1:
-##            print "Process", token,
-##            if token.at_line_start:
-##                print "at_line_start",
-##            if token.must_indent:
-##                print "must_indent",
-##            print
-                
-        # WS only occurs at the start of the line
-        # There may be WS followed by NEWLINE so
-        # only track the depth here.  Don't indent/dedent
-        # until there's something real.
-        if token.type == "WS":
-            assert depth == 0
-            depth = len(token.value)
-            prev_was_ws = True
-            # WS tokens are never passed to the parser
-            continue
-
-        if token.type == "NEWLINE":
-            depth = 0
-            if prev_was_ws or token.at_line_start:
-                # ignore blank lines
-                continue
-            # pass the other cases on through
-            yield token
-            continue
-
-        # then it must be a real token (not WS, not NEWLINE)
-        # which can affect the indentation level
-
-        prev_was_ws = False
-        if token.must_indent:
-            # The current depth must be larger than the previous level
-            if not (depth > levels[-1]):
-                raise IndentationError("expected an indented block")
-
-            levels.append(depth)
-            yield INDENT(token.lineno)
-
-        elif token.at_line_start:
-            # Must be on the same level or one of the previous levels
-            if depth == levels[-1]:
-                # At the same level
-                pass
-            elif depth > levels[-1]:
-                raise IndentationError("indentation increase but not in new block")
-            else:
-                # Back up; but only if it matches a previous level
-                try:
-                    i = levels.index(depth)
-                except ValueError:
-                    raise IndentationError("inconsistent indentation")
-                for _ in range(i+1, len(levels)):
-                    yield DEDENT(token.lineno)
-                    levels.pop()
-
-        yield token
-
-    ### Finished processing ###
-
-    # Must dedent any remaining levels
-    if len(levels) > 1:
-        assert token is not None
-        for _ in range(1, len(levels)):
-            yield DEDENT(token.lineno)
-    
-
-# The top-level filter adds an ENDMARKER, if requested.
-# Python's grammar uses it.
-def filter(lexer, add_endmarker = True):
-    token = None
-    tokens = iter(lexer.token, None)
-    tokens = track_tokens_filter(lexer, tokens)
-    for token in indentation_filter(tokens):
-        yield token
-
-    if add_endmarker:
-        lineno = 1
-        if token is not None:
-            lineno = token.lineno
-        yield _new_token("ENDMARKER", lineno)
-
-# Combine Ply and my filters into a new lexer
-
-class IndentLexer(object):
-    def __init__(self, debug=0, optimize=0, lextab='lextab', reflags=0):
-        self.lexer = lex.lex(debug=debug, optimize=optimize, lextab=lextab, reflags=reflags)
-        self.token_stream = None
-    def input(self, s, add_endmarker=True):
-        self.lexer.paren_count = 0
-        self.lexer.input(s)
-        self.token_stream = filter(self.lexer, add_endmarker)
-    def token(self):
-        try:
-            return self.token_stream.next()
-        except StopIteration:
-            return None
-
-##########   Parser (tokens -> AST) ######
-
-# also part of Ply
-#import yacc
-
-# I use the Python AST
-from compiler import ast
-
-# Helper function
-def Assign(left, right):
-    names = []
-    if isinstance(left, ast.Name):
-        # Single assignment on left
-        return ast.Assign([ast.AssName(left.name, 'OP_ASSIGN')], right)
-    elif isinstance(left, ast.Tuple):
-        # List of things - make sure they are Name nodes
-        names = []
-        for child in left.getChildren():
-            if not isinstance(child, ast.Name):
-                raise SyntaxError("that assignment not supported")
-            names.append(child.name)
-        ass_list = [ast.AssName(name, 'OP_ASSIGN') for name in names]
-        return ast.Assign([ast.AssTuple(ass_list)], right)
-    else:
-        raise SyntaxError("Can't do that yet")
-
-
-# The grammar comments come from Python's Grammar/Grammar file
-
-## NB: compound_stmt in single_input is followed by extra NEWLINE!
-# file_input: (NEWLINE | stmt)* ENDMARKER
-def p_file_input_end(p):
-    """file_input_end : file_input ENDMARKER"""
-    p[0] = ast.Stmt(p[1])
-def p_file_input(p):
-    """file_input : file_input NEWLINE
-                  | file_input stmt
-                  | NEWLINE
-                  | stmt"""
-    if isinstance(p[len(p)-1], basestring):
-        if len(p) == 3:
-            p[0] = p[1]
-        else:
-            p[0] = [] # p == 2 --> only a blank line
-    else:
-        if len(p) == 3:
-            p[0] = p[1] + p[2]
-        else:
-            p[0] = p[1]
-            
-
-# funcdef: [decorators] 'def' NAME parameters ':' suite
-# ignoring decorators
-def p_funcdef(p):
-    "funcdef : DEF NAME parameters COLON suite"
-    p[0] = ast.Function(None, p[2], tuple(p[3]), (), 0, None, p[5])
-    
-# parameters: '(' [varargslist] ')'
-def p_parameters(p):
-    """parameters : LPAR RPAR
-                  | LPAR varargslist RPAR"""
-    if len(p) == 3:
-        p[0] = []
-    else:
-        p[0] = p[2]
-    
-
-# varargslist: (fpdef ['=' test] ',')* ('*' NAME [',' '**' NAME] | '**' NAME) | 
-# highly simplified
-def p_varargslist(p):
-    """varargslist : varargslist COMMA NAME
-                   | NAME"""
-    if len(p) == 4:
-        p[0] = p[1] + p[3]
-    else:
-        p[0] = [p[1]]
-
-# stmt: simple_stmt | compound_stmt
-def p_stmt_simple(p):
-    """stmt : simple_stmt"""
-    # simple_stmt is a list
-    p[0] = p[1]
-    
-def p_stmt_compound(p):
-    """stmt : compound_stmt"""
-    p[0] = [p[1]]
-
-# simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE
-def p_simple_stmt(p):
-    """simple_stmt : small_stmts NEWLINE
-                   | small_stmts SEMICOLON NEWLINE"""
-    p[0] = p[1]
-
-def p_small_stmts(p):
-    """small_stmts : small_stmts SEMICOLON small_stmt
-                   | small_stmt"""
-    if len(p) == 4:
-        p[0] = p[1] + [p[3]]
-    else:
-        p[0] = [p[1]]
-
-# small_stmt: expr_stmt | print_stmt  | del_stmt | pass_stmt | flow_stmt |
-#    import_stmt | global_stmt | exec_stmt | assert_stmt
-def p_small_stmt(p):
-    """small_stmt : flow_stmt
-                  | expr_stmt"""
-    p[0] = p[1]
-
-# expr_stmt: testlist (augassign (yield_expr|testlist) |
-#                      ('=' (yield_expr|testlist))*)
-# augassign: ('+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' |
-#             '<<=' | '>>=' | '**=' | '//=')
-def p_expr_stmt(p):
-    """expr_stmt : testlist ASSIGN testlist
-                 | testlist """
-    if len(p) == 2:
-        # a list of expressions
-        p[0] = ast.Discard(p[1])
-    else:
-        p[0] = Assign(p[1], p[3])
-
-def p_flow_stmt(p):
-    "flow_stmt : return_stmt"
-    p[0] = p[1]
-
-# return_stmt: 'return' [testlist]
-def p_return_stmt(p):
-    "return_stmt : RETURN testlist"
-    p[0] = ast.Return(p[2])
-
-
-def p_compound_stmt(p):
-    """compound_stmt : if_stmt
-                     | funcdef"""
-    p[0] = p[1]
-
-def p_if_stmt(p):
-    'if_stmt : IF test COLON suite'
-    p[0] = ast.If([(p[2], p[4])], None)
-
-def p_suite(p):
-    """suite : simple_stmt
-             | NEWLINE INDENT stmts DEDENT"""
-    if len(p) == 2:
-        p[0] = ast.Stmt(p[1])
-    else:
-        p[0] = ast.Stmt(p[3])
-    
-
-def p_stmts(p):
-    """stmts : stmts stmt
-             | stmt"""
-    if len(p) == 3:
-        p[0] = p[1] + p[2]
-    else:
-        p[0] = p[1]
-
-## No using Python's approach because Ply supports precedence
-
-# comparison: expr (comp_op expr)*
-# arith_expr: term (('+'|'-') term)*
-# term: factor (('*'|'/'|'%'|'//') factor)*
-# factor: ('+'|'-'|'~') factor | power
-# comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is'|'is' 'not'
-
-def make_lt_compare((left, right)):
-    return ast.Compare(left, [('<', right),])
-def make_gt_compare((left, right)):
-    return ast.Compare(left, [('>', right),])
-def make_eq_compare((left, right)):
-    return ast.Compare(left, [('==', right),])
-
-
-binary_ops = {
-    "+": ast.Add,
-    "-": ast.Sub,
-    "*": ast.Mul,
-    "/": ast.Div,
-    "<": make_lt_compare,
-    ">": make_gt_compare,
-    "==": make_eq_compare,
-}
-unary_ops = {
-    "+": ast.UnaryAdd,
-    "-": ast.UnarySub,
-    }
-precedence = (
-    ("left", "EQ", "GT", "LT"),
-    ("left", "PLUS", "MINUS"),
-    ("left", "MULT", "DIV"),
-    )
-
-def p_comparison(p):
-    """comparison : comparison PLUS comparison
-                  | comparison MINUS comparison
-                  | comparison MULT comparison
-                  | comparison DIV comparison
-                  | comparison LT comparison
-                  | comparison EQ comparison
-                  | comparison GT comparison
-                  | PLUS comparison
-                  | MINUS comparison
-                  | power"""
-    if len(p) == 4:
-        p[0] = binary_ops[p[2]]((p[1], p[3]))
-    elif len(p) == 3:
-        p[0] = unary_ops[p[1]](p[2])
-    else:
-        p[0] = p[1]
-                  
-# power: atom trailer* ['**' factor]
-# trailers enables function calls.  I only allow one level of calls
-# so this is 'trailer'
-def p_power(p):
-    """power : atom
-             | atom trailer"""
-    if len(p) == 2:
-        p[0] = p[1]
-    else:
-        if p[2][0] == "CALL":
-            p[0] = ast.CallFunc(p[1], p[2][1], None, None)
-        else:
-            raise AssertionError("not implemented")
-
-def p_atom_name(p):
-    """atom : NAME"""
-    p[0] = ast.Name(p[1])
-
-def p_atom_number(p):
-    """atom : NUMBER
-            | STRING"""
-    p[0] = ast.Const(p[1])
-
-def p_atom_tuple(p):
-    """atom : LPAR testlist RPAR"""
-    p[0] = p[2]
-
-# trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME
-def p_trailer(p):
-    "trailer : LPAR arglist RPAR"
-    p[0] = ("CALL", p[2])
-
-# testlist: test (',' test)* [',']
-# Contains shift/reduce error
-def p_testlist(p):
-    """testlist : testlist_multi COMMA
-                | testlist_multi """
-    if len(p) == 2:
-        p[0] = p[1]
-    else:
-        # May need to promote singleton to tuple
-        if isinstance(p[1], list):
-            p[0] = p[1]
-        else:
-            p[0] = [p[1]]
-    # Convert into a tuple?
-    if isinstance(p[0], list):
-        p[0] = ast.Tuple(p[0])
-
-def p_testlist_multi(p):
-    """testlist_multi : testlist_multi COMMA test
-                      | test"""
-    if len(p) == 2:
-        # singleton
-        p[0] = p[1]
-    else:
-        if isinstance(p[1], list):
-            p[0] = p[1] + [p[3]]
-        else:
-            # singleton -> tuple
-            p[0] = [p[1], p[3]]
-
-
-# test: or_test ['if' or_test 'else' test] | lambdef
-#  as I don't support 'and', 'or', and 'not' this works down to 'comparison'
-def p_test(p):
-    "test : comparison"
-    p[0] = p[1]
-    
-
-
-# arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | '**' test)
-# XXX INCOMPLETE: this doesn't allow the trailing comma
-def p_arglist(p):
-    """arglist : arglist COMMA argument
-               | argument"""
-    if len(p) == 4:
-        p[0] = p[1] + [p[3]]
-    else:
-        p[0] = [p[1]]
-
-# argument: test [gen_for] | test '=' test  # Really [keyword '='] test
-def p_argument(p):
-    "argument : test"
-    p[0] = p[1]
-
-def p_error(p):
-    #print "Error!", repr(p)
-    raise SyntaxError(p)
-
-
-class GardenSnakeParser(object):
-    def __init__(self, lexer = None):
-        if lexer is None:
-            lexer = IndentLexer()
-        self.lexer = lexer
-        self.parser = yacc.yacc(start="file_input_end")
-
-    def parse(self, code):
-        self.lexer.input(code)
-        result = self.parser.parse(lexer = self.lexer)
-        return ast.Module(None, result)
-
-
-###### Code generation ######
-    
-from compiler import misc, syntax, pycodegen
-
-class GardenSnakeCompiler(object):
-    def __init__(self):
-        self.parser = GardenSnakeParser()
-    def compile(self, code, filename="<string>"):
-        tree = self.parser.parse(code)
-        #print  tree
-        misc.set_filename(filename, tree)
-        syntax.check(tree)
-        gen = pycodegen.ModuleCodeGenerator(tree)
-        code = gen.getCode()
-        return code
-
-####### Test code #######
-    
-compile = GardenSnakeCompiler().compile
-
-code = r"""
-
-print('LET\'S TRY THIS \\OUT')
-  
-#Comment here
-def x(a):
-    print('called with',a)
-    if a == 1:
-        return 2
-    if a*2 > 10: return 999 / 4
-        # Another comment here
-
-    return a+2*3
-
-ints = (1, 2,
-   3, 4,
-5)
-print('mutiline-expression', ints)
-
-t = 4+1/3*2+6*(9-5+1)
-print('predence test; should be 34+2/3:', t, t==(34+2/3))
-
-print('numbers', 1,2,3,4,5)
-if 1:
- 8
- a=9
- print(x(a))
-
-print(x(1))
-print(x(2))
-print(x(8),'3')
-print('this is decimal', 1/5)
-print('BIG DECIMAL', 1.234567891234567e12345)
-
-"""
-
-# Set up the GardenSnake run-time environment
-def print_(*args):
-    print "-->", " ".join(map(str,args))
-
-globals()["print"] = print_
-
-compiled_code = compile(code)
-
-exec compiled_code in globals()
-print "Done"
diff --git a/chall/ply-2.2/example/GardenSnake/README b/chall/ply-2.2/example/GardenSnake/README
deleted file mode 100644
index 4d8be2d..0000000
--- a/chall/ply-2.2/example/GardenSnake/README
+++ /dev/null
@@ -1,5 +0,0 @@
-This example is Andrew Dalke's GardenSnake language. It shows how to process an
-indentation-like language like Python.   Further details can be found here:
-
-http://dalkescientific.com/writings/diary/archive/2006/08/30/gardensnake_language.html
-
diff --git a/chall/ply-2.2/example/README b/chall/ply-2.2/example/README
deleted file mode 100644
index 63519b5..0000000
--- a/chall/ply-2.2/example/README
+++ /dev/null
@@ -1,10 +0,0 @@
-Simple examples:
-   calc       - Simple calculator
-   classcalc  - Simple calculate defined as a class
-   
-Complex examples
-   ansic       - ANSI C grammar from K&R
-   BASIC       - A small BASIC interpreter
-   GardenSnake - A simple python-like language
-   yply        - Converts Unix yacc files to PLY programs.
-
diff --git a/chall/ply-2.2/example/ansic/README b/chall/ply-2.2/example/ansic/README
deleted file mode 100644
index e049d3b..0000000
--- a/chall/ply-2.2/example/ansic/README
+++ /dev/null
@@ -1,2 +0,0 @@
-This example is incomplete.  Was going to specify an ANSI C parser.
-This is part of it.
diff --git a/chall/ply-2.2/example/ansic/clex.py b/chall/ply-2.2/example/ansic/clex.py
deleted file mode 100644
index 6b9d7e7..0000000
--- a/chall/ply-2.2/example/ansic/clex.py
+++ /dev/null
@@ -1,164 +0,0 @@
-# ----------------------------------------------------------------------
-# clex.py
-#
-# A lexer for ANSI C.
-# ----------------------------------------------------------------------
-
-import sys
-sys.path.insert(0,"../..")
-
-import ply.lex as lex
-
-# Reserved words
-reserved = (
-    'AUTO', 'BREAK', 'CASE', 'CHAR', 'CONST', 'CONTINUE', 'DEFAULT', 'DO', 'DOUBLE',
-    'ELSE', 'ENUM', 'EXTERN', 'FLOAT', 'FOR', 'GOTO', 'IF', 'INT', 'LONG', 'REGISTER',
-    'RETURN', 'SHORT', 'SIGNED', 'SIZEOF', 'STATIC', 'STRUCT', 'SWITCH', 'TYPEDEF',
-    'UNION', 'UNSIGNED', 'VOID', 'VOLATILE', 'WHILE',
-    )
-
-tokens = reserved + (
-    # Literals (identifier, integer constant, float constant, string constant, char const)
-    'ID', 'TYPEID', 'ICONST', 'FCONST', 'SCONST', 'CCONST',
-
-    # Operators (+,-,*,/,%,|,&,~,^,<<,>>, ||, &&, !, <, <=, >, >=, ==, !=)
-    'PLUS', 'MINUS', 'TIMES', 'DIVIDE', 'MOD',
-    'OR', 'AND', 'NOT', 'XOR', 'LSHIFT', 'RSHIFT',
-    'LOR', 'LAND', 'LNOT',
-    'LT', 'LE', 'GT', 'GE', 'EQ', 'NE',
-    
-    # Assignment (=, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |=)
-    'EQUALS', 'TIMESEQUAL', 'DIVEQUAL', 'MODEQUAL', 'PLUSEQUAL', 'MINUSEQUAL',
-    'LSHIFTEQUAL','RSHIFTEQUAL', 'ANDEQUAL', 'XOREQUAL', 'OREQUAL',
-
-    # Increment/decrement (++,--)
-    'PLUSPLUS', 'MINUSMINUS',
-
-    # Structure dereference (->)
-    'ARROW',
-
-    # Conditional operator (?)
-    'CONDOP',
-    
-    # Delimeters ( ) [ ] { } , . ; :
-    'LPAREN', 'RPAREN',
-    'LBRACKET', 'RBRACKET',
-    'LBRACE', 'RBRACE',
-    'COMMA', 'PERIOD', 'SEMI', 'COLON',
-
-    # Ellipsis (...)
-    'ELLIPSIS',
-    )
-
-# Completely ignored characters
-t_ignore           = ' \t\x0c'
-
-# Newlines
-def t_NEWLINE(t):
-    r'\n+'
-    t.lexer.lineno += t.value.count("\n")
-    
-# Operators
-t_PLUS             = r'\+'
-t_MINUS            = r'-'
-t_TIMES            = r'\*'
-t_DIVIDE           = r'/'
-t_MOD              = r'%'
-t_OR               = r'\|'
-t_AND              = r'&'
-t_NOT              = r'~'
-t_XOR              = r'\^'
-t_LSHIFT           = r'<<'
-t_RSHIFT           = r'>>'
-t_LOR              = r'\|\|'
-t_LAND             = r'&&'
-t_LNOT             = r'!'
-t_LT               = r'<'
-t_GT               = r'>'
-t_LE               = r'<='
-t_GE               = r'>='
-t_EQ               = r'=='
-t_NE               = r'!='
-
-# Assignment operators
-
-t_EQUALS           = r'='
-t_TIMESEQUAL       = r'\*='
-t_DIVEQUAL         = r'/='
-t_MODEQUAL         = r'%='
-t_PLUSEQUAL        = r'\+='
-t_MINUSEQUAL       = r'-='
-t_LSHIFTEQUAL      = r'<<='
-t_RSHIFTEQUAL      = r'>>='
-t_ANDEQUAL         = r'&='
-t_OREQUAL          = r'\|='
-t_XOREQUAL         = r'^='
-
-# Increment/decrement
-t_PLUSPLUS         = r'\+\+'
-t_MINUSMINUS       = r'--'
-
-# ->
-t_ARROW            = r'->'
-
-# ?
-t_CONDOP           = r'\?'
-
-# Delimeters
-t_LPAREN           = r'\('
-t_RPAREN           = r'\)'
-t_LBRACKET         = r'\['
-t_RBRACKET         = r'\]'
-t_LBRACE           = r'\{'
-t_RBRACE           = r'\}'
-t_COMMA            = r','
-t_PERIOD           = r'\.'
-t_SEMI             = r';'
-t_COLON            = r':'
-t_ELLIPSIS         = r'\.\.\.'
-
-# Identifiers and reserved words
-
-reserved_map = { }
-for r in reserved:
-    reserved_map[r.lower()] = r
-
-def t_ID(t):
-    r'[A-Za-z_][\w_]*'
-    t.type = reserved_map.get(t.value,"ID")
-    return t
-
-# Integer literal
-t_ICONST = r'\d+([uU]|[lL]|[uU][lL]|[lL][uU])?'
-
-# Floating literal
-t_FCONST = r'((\d+)(\.\d+)(e(\+|-)?(\d+))? | (\d+)e(\+|-)?(\d+))([lL]|[fF])?'
-
-# String literal
-t_SCONST = r'\"([^\\\n]|(\\.))*?\"'
-
-# Character constant 'c' or L'c'
-t_CCONST = r'(L)?\'([^\\\n]|(\\.))*?\''
-
-# Comments
-def t_comment(t):
-    r' /\*(.|\n)*?\*/'
-    t.lineno += t.value.count('\n')
-
-# Preprocessor directive (ignored)
-def t_preprocessor(t):
-    r'\#(.)*?\n'
-    t.lineno += 1
-    
-def t_error(t):
-    print "Illegal character %s" % repr(t.value[0])
-    t.lexer.skip(1)
-    
-lexer = lex.lex(optimize=1)
-if __name__ == "__main__":
-    lex.runmain(lexer)
-
-    
-
-
-
diff --git a/chall/ply-2.2/example/ansic/cparse.py b/chall/ply-2.2/example/ansic/cparse.py
deleted file mode 100644
index b6a0c42..0000000
--- a/chall/ply-2.2/example/ansic/cparse.py
+++ /dev/null
@@ -1,863 +0,0 @@
-# -----------------------------------------------------------------------------
-# cparse.py
-#
-# Simple parser for ANSI C.  Based on the grammar in K&R, 2nd Ed.
-# -----------------------------------------------------------------------------
-
-import sys
-import clex
-import ply.yacc as yacc
-
-# Get the token map
-tokens = clex.tokens
-
-# translation-unit:
-
-def p_translation_unit_1(t):
-    'translation_unit : external_declaration'
-    pass
-
-def p_translation_unit_2(t):
-    'translation_unit : translation_unit external_declaration'
-    pass
-
-# external-declaration:
-
-def p_external_declaration_1(t):
-    'external_declaration : function_definition'
-    pass
-
-def p_external_declaration_2(t):
-    'external_declaration : declaration'
-    pass
-
-# function-definition:
-
-def p_function_definition_1(t):
-    'function_definition : declaration_specifiers declarator declaration_list compound_statement'
-    pass
-
-def p_function_definition_2(t):
-    'function_definition : declarator declaration_list compound_statement'
-    pass
-
-def p_function_definition_3(t):
-    'function_definition : declarator compound_statement'
-    pass
-
-def p_function_definition_4(t):
-    'function_definition : declaration_specifiers declarator compound_statement'
-    pass
-
-# declaration:
-
-def p_declaration_1(t):
-    'declaration : declaration_specifiers init_declarator_list SEMI'
-    pass
-
-def p_declaration_2(t):
-    'declaration : declaration_specifiers SEMI'
-    pass
-
-# declaration-list:
-
-def p_declaration_list_1(t):
-    'declaration_list : declaration'
-    pass
-
-def p_declaration_list_2(t):
-    'declaration_list : declaration_list declaration '
-    pass
-
-# declaration-specifiers
-def p_declaration_specifiers_1(t):
-    'declaration_specifiers : storage_class_specifier declaration_specifiers'
-    pass
-
-def p_declaration_specifiers_2(t):
-    'declaration_specifiers : type_specifier declaration_specifiers'
-    pass
-
-def p_declaration_specifiers_3(t):
-    'declaration_specifiers : type_qualifier declaration_specifiers'
-    pass
-
-def p_declaration_specifiers_4(t):
-    'declaration_specifiers : storage_class_specifier'
-    pass
-
-def p_declaration_specifiers_5(t):
-    'declaration_specifiers : type_specifier'
-    pass
-
-def p_declaration_specifiers_6(t):
-    'declaration_specifiers : type_qualifier'
-    pass
-
-# storage-class-specifier
-def p_storage_class_specifier(t):
-    '''storage_class_specifier : AUTO
-                               | REGISTER
-                               | STATIC
-                               | EXTERN
-                               | TYPEDEF
-                               '''
-    pass
-
-# type-specifier:
-def p_type_specifier(t):
-    '''type_specifier : VOID
-                      | CHAR
-                      | SHORT
-                      | INT
-                      | LONG
-                      | FLOAT
-                      | DOUBLE
-                      | SIGNED
-                      | UNSIGNED
-                      | struct_or_union_specifier
-                      | enum_specifier
-                      | TYPEID
-                      '''
-    pass
-
-# type-qualifier:
-def p_type_qualifier(t):
-    '''type_qualifier : CONST
-                      | VOLATILE'''
-    pass
-
-# struct-or-union-specifier
-
-def p_struct_or_union_specifier_1(t):
-    'struct_or_union_specifier : struct_or_union ID LBRACE struct_declaration_list RBRACE'
-    pass
-
-def p_struct_or_union_specifier_2(t):
-    'struct_or_union_specifier : struct_or_union LBRACE struct_declaration_list RBRACE'
-    pass
-
-def p_struct_or_union_specifier_3(t):
-    'struct_or_union_specifier : struct_or_union ID'
-    pass
-
-# struct-or-union:
-def p_struct_or_union(t):
-    '''struct_or_union : STRUCT
-                       | UNION
-                       '''
-    pass
-
-# struct-declaration-list:
-
-def p_struct_declaration_list_1(t):
-    'struct_declaration_list : struct_declaration'
-    pass
-
-def p_struct_declaration_list_2(t):
-    'struct_declaration_list : struct_declarator_list struct_declaration'
-    pass
-
-# init-declarator-list:
-
-def p_init_declarator_list_1(t):
-    'init_declarator_list : init_declarator'
-    pass
-
-def p_init_declarator_list_2(t):
-    'init_declarator_list : init_declarator_list COMMA init_declarator'
-    pass
-
-# init-declarator
-
-def p_init_declarator_1(t):
-    'init_declarator : declarator'
-    pass
-
-def p_init_declarator_2(t):
-    'init_declarator : declarator EQUALS initializer'
-    pass
-
-# struct-declaration:
-
-def p_struct_declaration(t):
-    'struct_declaration : specifier_qualifier_list struct_declarator_list SEMI'
-    pass
-
-# specifier-qualifier-list:
-
-def p_specifier_qualifier_list_1(t):
-    'specifier_qualifier_list : type_specifier specifier_qualifier_list'
-    pass
-
-def p_specifier_qualifier_list_2(t):
-    'specifier_qualifier_list : type_specifier'
-    pass
-
-def p_specifier_qualifier_list_3(t):
-    'specifier_qualifier_list : type_qualifier specifier_qualifier_list'
-    pass
-
-def p_specifier_qualifier_list_4(t):
-    'specifier_qualifier_list : type_qualifier'
-    pass
-
-# struct-declarator-list:
-
-def p_struct_declarator_list_1(t):
-    'struct_declarator_list : struct_declarator'
-    pass
-
-def p_struct_declarator_list_2(t):
-    'struct_declarator_list : struct_declarator_list COMMA struct_declarator'
-    pass
-
-# struct-declarator:
-
-def p_struct_declarator_1(t):
-    'struct_declarator : declarator'
-    pass
-
-def p_struct_declarator_2(t):
-    'struct_declarator : declarator COLON constant_expression'
-    pass
-
-def p_struct_declarator_3(t):
-    'struct_declarator : COLON constant_expression'
-    pass
-
-# enum-specifier:
-
-def p_enum_specifier_1(t):
-    'enum_specifier : ENUM ID LBRACE enumerator_list RBRACE'
-    pass
-
-def p_enum_specifier_2(t):
-    'enum_specifier : ENUM LBRACE enumerator_list RBRACE'
-    pass
-
-def p_enum_specifier_3(t):
-    'enum_specifier : ENUM ID'
-    pass
-
-# enumerator_list:
-def p_enumerator_list_1(t):
-    'enumerator_list : enumerator'
-    pass
-
-def p_enumerator_list_2(t):
-    'enumerator_list : enumerator_list COMMA enumerator'
-    pass
-
-# enumerator:
-def p_enumerator_1(t):
-    'enumerator : ID'
-    pass
-
-def p_enumerator_2(t):
-    'enumerator : ID EQUALS constant_expression'
-    pass
-
-# declarator:
-
-def p_declarator_1(t):
-    'declarator : pointer direct_declarator'
-    pass
-
-def p_declarator_2(t):
-    'declarator : direct_declarator'
-    pass
-
-# direct-declarator:
-
-def p_direct_declarator_1(t):
-    'direct_declarator : ID'
-    pass
-
-def p_direct_declarator_2(t):
-    'direct_declarator : LPAREN declarator RPAREN'
-    pass
-
-def p_direct_declarator_3(t):
-    'direct_declarator : direct_declarator LBRACKET constant_expression_opt RBRACKET'
-    pass
-
-def p_direct_declarator_4(t):
-    'direct_declarator : direct_declarator LPAREN parameter_type_list RPAREN '
-    pass
-
-def p_direct_declarator_5(t):
-    'direct_declarator : direct_declarator LPAREN identifier_list RPAREN '
-    pass
-
-def p_direct_declarator_6(t):
-    'direct_declarator : direct_declarator LPAREN RPAREN '
-    pass
-
-# pointer:
-def p_pointer_1(t):
-    'pointer : TIMES type_qualifier_list'
-    pass
-
-def p_pointer_2(t):
-    'pointer : TIMES'
-    pass
-
-def p_pointer_3(t):
-    'pointer : TIMES type_qualifier_list pointer'
-    pass
-
-def p_pointer_4(t):
-    'pointer : TIMES pointer'
-    pass
-
-# type-qualifier-list:
-
-def p_type_qualifier_list_1(t):
-    'type_qualifier_list : type_qualifier'
-    pass
-
-def p_type_qualifier_list_2(t):
-    'type_qualifier_list : type_qualifier_list type_qualifier'
-    pass
-
-# parameter-type-list:
-
-def p_parameter_type_list_1(t):
-    'parameter_type_list : parameter_list'
-    pass
-
-def p_parameter_type_list_2(t):
-    'parameter_type_list : parameter_list COMMA ELLIPSIS'
-    pass
-
-# parameter-list:
-
-def p_parameter_list_1(t):
-    'parameter_list : parameter_declaration'
-    pass
-
-def p_parameter_list_2(t):
-    'parameter_list : parameter_list COMMA parameter_declaration'
-    pass
-
-# parameter-declaration:
-def p_parameter_declaration_1(t):
-    'parameter_declaration : declaration_specifiers declarator'
-    pass
-
-def p_parameter_declaration_2(t):
-    'parameter_declaration : declaration_specifiers abstract_declarator_opt'
-    pass
-
-# identifier-list:
-def p_identifier_list_1(t):
-    'identifier_list : ID'
-    pass
-
-def p_identifier_list_2(t):
-    'identifier_list : identifier_list COMMA ID'
-    pass
-
-# initializer:
-
-def p_initializer_1(t):
-    'initializer : assignment_expression'
-    pass
-
-def p_initializer_2(t):
-    '''initializer : LBRACE initializer_list RBRACE
-                   | LBRACE initializer_list COMMA RBRACE'''
-    pass
-
-# initializer-list:
-
-def p_initializer_list_1(t):
-    'initializer_list : initializer'
-    pass
-
-def p_initializer_list_2(t):
-    'initializer_list : initializer_list COMMA initializer'
-    pass
-
-# type-name:
-
-def p_type_name(t):
-    'type_name : specifier_qualifier_list abstract_declarator_opt'
-    pass
-
-def p_abstract_declarator_opt_1(t):
-    'abstract_declarator_opt : empty'
-    pass
-
-def p_abstract_declarator_opt_2(t):
-    'abstract_declarator_opt : abstract_declarator'
-    pass
-
-# abstract-declarator:
-
-def p_abstract_declarator_1(t):
-    'abstract_declarator : pointer '
-    pass
-
-def p_abstract_declarator_2(t):
-    'abstract_declarator : pointer direct_abstract_declarator'
-    pass
-
-def p_abstract_declarator_3(t):
-    'abstract_declarator : direct_abstract_declarator'
-    pass
-
-# direct-abstract-declarator:
-
-def p_direct_abstract_declarator_1(t):
-    'direct_abstract_declarator : LPAREN abstract_declarator RPAREN'
-    pass
-
-def p_direct_abstract_declarator_2(t):
-    'direct_abstract_declarator : direct_abstract_declarator LBRACKET constant_expression_opt RBRACKET'
-    pass
-
-def p_direct_abstract_declarator_3(t):
-    'direct_abstract_declarator : LBRACKET constant_expression_opt RBRACKET'
-    pass
-
-def p_direct_abstract_declarator_4(t):
-    'direct_abstract_declarator : direct_abstract_declarator LPAREN parameter_type_list_opt RPAREN'
-    pass
-
-def p_direct_abstract_declarator_5(t):
-    'direct_abstract_declarator : LPAREN parameter_type_list_opt RPAREN'
-    pass
-
-# Optional fields in abstract declarators
-
-def p_constant_expression_opt_1(t):
-    'constant_expression_opt : empty'
-    pass
-
-def p_constant_expression_opt_2(t):
-    'constant_expression_opt : constant_expression'
-    pass
-
-def p_parameter_type_list_opt_1(t):
-    'parameter_type_list_opt : empty'
-    pass
-
-def p_parameter_type_list_opt_2(t):
-    'parameter_type_list_opt : parameter_type_list'
-    pass
-
-# statement:
-
-def p_statement(t):
-    '''
-    statement : labeled_statement
-              | expression_statement
-              | compound_statement
-              | selection_statement
-              | iteration_statement
-              | jump_statement
-              '''
-    pass
-
-# labeled-statement:
-
-def p_labeled_statement_1(t):
-    'labeled_statement : ID COLON statement'
-    pass
-
-def p_labeled_statement_2(t):
-    'labeled_statement : CASE constant_expression COLON statement'
-    pass
-
-def p_labeled_statement_3(t):
-    'labeled_statement : DEFAULT COLON statement'
-    pass
-
-# expression-statement:
-def p_expression_statement(t):
-    'expression_statement : expression_opt SEMI'
-    pass
-
-# compound-statement:
-
-def p_compound_statement_1(t):
-    'compound_statement : LBRACE declaration_list statement_list RBRACE'
-    pass
-
-def p_compound_statement_2(t):
-    'compound_statement : LBRACE statement_list RBRACE'
-    pass
-
-def p_compound_statement_3(t):
-    'compound_statement : LBRACE declaration_list RBRACE'
-    pass
-
-def p_compound_statement_4(t):
-    'compound_statement : LBRACE RBRACE'
-    pass
-
-# statement-list:
-
-def p_statement_list_1(t):
-    'statement_list : statement'
-    pass
-
-def p_statement_list_2(t):
-    'statement_list : statement_list statement'
-    pass
-
-# selection-statement
-
-def p_selection_statement_1(t):
-    'selection_statement : IF LPAREN expression RPAREN statement'
-    pass
-
-def p_selection_statement_2(t):
-    'selection_statement : IF LPAREN expression RPAREN statement ELSE statement '
-    pass
-
-def p_selection_statement_3(t):
-    'selection_statement : SWITCH LPAREN expression RPAREN statement '
-    pass
-
-# iteration_statement:
-
-def p_iteration_statement_1(t):
-    'iteration_statement : WHILE LPAREN expression RPAREN statement'
-    pass
-
-def p_iteration_statement_2(t):
-    'iteration_statement : FOR LPAREN expression_opt SEMI expression_opt SEMI expression_opt RPAREN statement '
-    pass
-
-def p_iteration_statement_3(t):
-    'iteration_statement : DO statement WHILE LPAREN expression RPAREN SEMI'
-    pass
-
-# jump_statement:
-
-def p_jump_statement_1(t):
-    'jump_statement : GOTO ID SEMI'
-    pass
-
-def p_jump_statement_2(t):
-    'jump_statement : CONTINUE SEMI'
-    pass
-
-def p_jump_statement_3(t):
-    'jump_statement : BREAK SEMI'
-    pass
-
-def p_jump_statement_4(t):
-    'jump_statement : RETURN expression_opt SEMI'
-    pass
-
-def p_expression_opt_1(t):
-    'expression_opt : empty'
-    pass
-
-def p_expression_opt_2(t):
-    'expression_opt : expression'
-    pass
-
-# expression:
-def p_expression_1(t):
-    'expression : assignment_expression'
-    pass
-
-def p_expression_2(t):
-    'expression : expression COMMA assignment_expression'
-    pass
-
-# assigment_expression:
-def p_assignment_expression_1(t):
-    'assignment_expression : conditional_expression'
-    pass
-
-def p_assignment_expression_2(t):
-    'assignment_expression : unary_expression assignment_operator assignment_expression'
-    pass
-
-# assignment_operator:
-def p_assignment_operator(t):
-    '''
-    assignment_operator : EQUALS
-                        | TIMESEQUAL
-                        | DIVEQUAL
-                        | MODEQUAL
-                        | PLUSEQUAL
-                        | MINUSEQUAL
-                        | LSHIFTEQUAL
-                        | RSHIFTEQUAL
-                        | ANDEQUAL
-                        | OREQUAL
-                        | XOREQUAL
-                        '''
-    pass
-
-# conditional-expression
-def p_conditional_expression_1(t):
-    'conditional_expression : logical_or_expression'
-    pass
-
-def p_conditional_expression_2(t):
-    'conditional_expression : logical_or_expression CONDOP expression COLON conditional_expression '
-    pass
-
-# constant-expression
-
-def p_constant_expression(t):
-    'constant_expression : conditional_expression'
-    pass
-
-# logical-or-expression
-
-def p_logical_or_expression_1(t):
-    'logical_or_expression : logical_and_expression'
-    pass
-
-def p_logical_or_expression_2(t):
-    'logical_or_expression : logical_or_expression LOR logical_and_expression'
-    pass
-
-# logical-and-expression
-
-def p_logical_and_expression_1(t):
-    'logical_and_expression : inclusive_or_expression'
-    pass
-
-def p_logical_and_expression_2(t):
-    'logical_and_expression : logical_and_expression LAND inclusive_or_expression'
-    pass
-
-# inclusive-or-expression:
-
-def p_inclusive_or_expression_1(t):
-    'inclusive_or_expression : exclusive_or_expression'
-    pass
-
-def p_inclusive_or_expression_2(t):
-    'inclusive_or_expression : inclusive_or_expression OR exclusive_or_expression'
-    pass
-
-# exclusive-or-expression:
-
-def p_exclusive_or_expression_1(t):
-    'exclusive_or_expression :  and_expression'
-    pass
-
-def p_exclusive_or_expression_2(t):
-    'exclusive_or_expression :  exclusive_or_expression XOR and_expression'
-    pass
-
-# AND-expression
-
-def p_and_expression_1(t):
-    'and_expression : equality_expression'
-    pass
-
-def p_and_expression_2(t):
-    'and_expression : and_expression AND equality_expression'
-    pass
-
-
-# equality-expression:
-def p_equality_expression_1(t):
-    'equality_expression : relational_expression'
-    pass
-
-def p_equality_expression_2(t):
-    'equality_expression : equality_expression EQ relational_expression'
-    pass
-
-def p_equality_expression_3(t):
-    'equality_expression : equality_expression NE relational_expression'
-    pass
-
-
-# relational-expression:
-def p_relational_expression_1(t):
-    'relational_expression : shift_expression'
-    pass
-
-def p_relational_expression_2(t):
-    'relational_expression : relational_expression LT shift_expression'
-    pass
-
-def p_relational_expression_3(t):
-    'relational_expression : relational_expression GT shift_expression'
-    pass
-
-def p_relational_expression_4(t):
-    'relational_expression : relational_expression LE shift_expression'
-    pass
-
-def p_relational_expression_5(t):
-    'relational_expression : relational_expression GE shift_expression'
-    pass
-
-# shift-expression
-
-def p_shift_expression_1(t):
-    'shift_expression : additive_expression'
-    pass
-
-def p_shift_expression_2(t):
-    'shift_expression : shift_expression LSHIFT additive_expression'
-    pass
-
-def p_shift_expression_3(t):
-    'shift_expression : shift_expression RSHIFT additive_expression'
-    pass
-
-# additive-expression
-
-def p_additive_expression_1(t):
-    'additive_expression : multiplicative_expression'
-    pass
-
-def p_additive_expression_2(t):
-    'additive_expression : additive_expression PLUS multiplicative_expression'
-    pass
-
-def p_additive_expression_3(t):
-    'additive_expression : additive_expression MINUS multiplicative_expression'
-    pass
-
-# multiplicative-expression
-
-def p_multiplicative_expression_1(t):
-    'multiplicative_expression : cast_expression'
-    pass
-
-def p_multiplicative_expression_2(t):
-    'multiplicative_expression : multiplicative_expression TIMES cast_expression'
-    pass
-
-def p_multiplicative_expression_3(t):
-    'multiplicative_expression : multiplicative_expression DIVIDE cast_expression'
-    pass
-
-def p_multiplicative_expression_4(t):
-    'multiplicative_expression : multiplicative_expression MOD cast_expression'
-    pass
-
-# cast-expression:
-
-def p_cast_expression_1(t):
-    'cast_expression : unary_expression'
-    pass
-
-def p_cast_expression_2(t):
-    'cast_expression : LPAREN type_name RPAREN cast_expression'
-    pass
-
-# unary-expression:
-def p_unary_expression_1(t):
-    'unary_expression : postfix_expression'
-    pass
-
-def p_unary_expression_2(t):
-    'unary_expression : PLUSPLUS unary_expression'
-    pass
-
-def p_unary_expression_3(t):
-    'unary_expression : MINUSMINUS unary_expression'
-    pass
-
-def p_unary_expression_4(t):
-    'unary_expression : unary_operator cast_expression'
-    pass
-
-def p_unary_expression_5(t):
-    'unary_expression : SIZEOF unary_expression'
-    pass
-
-def p_unary_expression_6(t):
-    'unary_expression : SIZEOF LPAREN type_name RPAREN'
-    pass
-    
-#unary-operator
-def p_unary_operator(t):
-    '''unary_operator : AND
-                    | TIMES
-                    | PLUS 
-                    | MINUS
-                    | NOT
-                    | LNOT '''
-    pass
-
-# postfix-expression:
-def p_postfix_expression_1(t):
-    'postfix_expression : primary_expression'
-    pass
-
-def p_postfix_expression_2(t):
-    'postfix_expression : postfix_expression LBRACKET expression RBRACKET'
-    pass
-
-def p_postfix_expression_3(t):
-    'postfix_expression : postfix_expression LPAREN argument_expression_list RPAREN'
-    pass
-
-def p_postfix_expression_4(t):
-    'postfix_expression : postfix_expression LPAREN RPAREN'
-    pass
-
-def p_postfix_expression_5(t):
-    'postfix_expression : postfix_expression PERIOD ID'
-    pass
-
-def p_postfix_expression_6(t):
-    'postfix_expression : postfix_expression ARROW ID'
-    pass
-
-def p_postfix_expression_7(t):
-    'postfix_expression : postfix_expression PLUSPLUS'
-    pass
-
-def p_postfix_expression_8(t):
-    'postfix_expression : postfix_expression MINUSMINUS'
-    pass
-
-# primary-expression:
-def p_primary_expression(t):
-    '''primary_expression :  ID
-                        |  constant
-                        |  SCONST
-                        |  LPAREN expression RPAREN'''
-    pass
-
-# argument-expression-list:
-def p_argument_expression_list(t):
-    '''argument_expression_list :  assignment_expression
-                              |  argument_expression_list COMMA assignment_expression'''
-    pass
-
-# constant:
-def p_constant(t): 
-   '''constant : ICONST
-              | FCONST
-              | CCONST'''
-   pass
-
-
-def p_empty(t):
-    'empty : '
-    pass
-
-def p_error(t):
-    print "Whoa. We're hosed"
-
-import profile
-# Build the grammar
-
-yacc.yacc(method='LALR')
-
-#profile.run("yacc.yacc(method='LALR')")
-
-
-
-
diff --git a/chall/ply-2.2/example/ansic/lextab.py b/chall/ply-2.2/example/ansic/lextab.py
deleted file mode 100644
index ce9804b..0000000
--- a/chall/ply-2.2/example/ansic/lextab.py
+++ /dev/null
@@ -1,8 +0,0 @@
-# lextab.py. This file automatically created by PLY (version 2.2). Don't edit!
-_lextokens    = {'SHORT': None, 'SIGNED': None, 'TIMES': None, 'TYPEID': None, 'GT': None, 'ARROW': None, 'FCONST': None, 'CONST': None, 'GE': None, 'PERIOD': None, 'SEMI': None, 'REGISTER': None, 'ENUM': None, 'SIZEOF': None, 'COMMA': None, 'RBRACE': None, 'RPAREN': None, 'RSHIFTEQUAL': None, 'LT': None, 'OREQUAL': None, 'XOREQUAL': None, 'DOUBLE': None, 'LBRACE': None, 'STRUCT': None, 'LPAREN': None, 'PLUSEQUAL': None, 'LNOT': None, 'NOT': None, 'CONDOP': None, 'LE': None, 'FLOAT': None, 'GOTO': None, 'LOR': None, 'EQ': None, 'MOD': None, 'ICONST': None, 'LONG': None, 'PLUS': None, 'DIVIDE': None, 'WHILE': None, 'UNION': None, 'CHAR': None, 'SWITCH': None, 'DO': None, 'FOR': None, 'VOID': None, 'EXTERN': None, 'RETURN': None, 'MINUSEQUAL': None, 'ELSE': None, 'ANDEQUAL': None, 'BREAK': None, 'CCONST': None, 'INT': None, 'DIVEQUAL': None, 'DEFAULT': None, 'TIMESEQUAL': None, 'MINUS': None, 'OR': None, 'CONTINUE': None, 'IF': None, 'UNSIGNED': None, 'ID': None, 'MINUSMINUS': None, 'COLON': None, 'LSHIFTEQUAL': None, 'RBRACKET': None, 'VOLATILE': None, 'CASE': None, 'PLUSPLUS': None, 'RSHIFT': None, 'MODEQUAL': None, 'LAND': None, 'AND': None, 'ELLIPSIS': None, 'STATIC': None, 'LBRACKET': None, 'LSHIFT': None, 'NE': None, 'TYPEDEF': None, 'AUTO': None, 'XOR': None, 'EQUALS': None, 'SCONST': None}
-_lexreflags   = 0
-_lexliterals  = ''
-_lexstateinfo = {'INITIAL': 'inclusive'}
-_lexstatere   = {'INITIAL': [('(?P<t_NEWLINE>\\n+)|(?P<t_ID>[A-Za-z_][\\w_]*)|(?P<t_comment> /\\*(.|\\n)*?\\*/)|(?P<t_preprocessor>\\#(.)*?\\n)|(?P<t_FCONST>((\\d+)(\\.\\d+)(e(\\+|-)?(\\d+))? | (\\d+)e(\\+|-)?(\\d+))([lL]|[fF])?)|(?P<t_ICONST>\\d+([uU]|[lL]|[uU][lL]|[lL][uU])?)|(?P<t_CCONST>(L)?\\\'([^\\\\\\n]|(\\\\.))*?\\\')|(?P<t_SCONST>\\"([^\\\\\\n]|(\\\\.))*?\\")|(?P<t_ELLIPSIS>\\.\\.\\.)|(?P<t_LOR>\\|\\|)|(?P<t_PLUSPLUS>\\+\\+)|(?P<t_TIMESEQUAL>\\*=)|(?P<t_RSHIFTEQUAL>>>=)|(?P<t_OREQUAL>\\|=)|(?P<t_PLUSEQUAL>\\+=)|(?P<t_LSHIFTEQUAL><<=)|(?P<t_RBRACKET>\\])|(?P<t_MODEQUAL>%=)|(?P<t_XOREQUAL>^=)|(?P<t_LSHIFT><<)|(?P<t_TIMES>\\*)|(?P<t_LAND>&&)|(?P<t_MINUSMINUS>--)|(?P<t_NE>!=)|(?P<t_LPAREN>\\()|(?P<t_ANDEQUAL>&=)|(?P<t_RSHIFT>>>)|(?P<t_LBRACKET>\\[)|(?P<t_LBRACE>\\{)|(?P<t_OR>\\|)|(?P<t_RBRACE>\\})|(?P<t_ARROW>->)|(?P<t_PLUS>\\+)|(?P<t_CONDOP>\\?)|(?P<t_LE><=)|(?P<t_MINUSEQUAL>-=)|(?P<t_PERIOD>\\.)|(?P<t_DIVEQUAL>/=)|(?P<t_EQ>==)|(?P<t_GE>>=)|(?P<t_RPAREN>\\))|(?P<t_XOR>\\^)|(?P<t_SEMI>;)|(?P<t_AND>&)|(?P<t_NOT>~)|(?P<t_EQUALS>=)|(?P<t_MOD>%)|(?P<t_LT><)|(?P<t_MINUS>-)|(?P<t_LNOT>!)|(?P<t_DIVIDE>/)|(?P<t_COMMA>,)|(?P<t_GT>>)|(?P<t_COLON>:)', [None, ('t_NEWLINE', 'NEWLINE'), ('t_ID', 'ID'), ('t_comment', 'comment'), None, ('t_preprocessor', 'preprocessor'), None, (None, 'FCONST'), None, None, None, None, None, None, None, None, None, None, (None, 'ICONST'), None, (None, 'CCONST'), None, None, None, (None, 'SCONST'), None, None, (None, 'ELLIPSIS'), (None, 'LOR'), (None, 'PLUSPLUS'), (None, 'TIMESEQUAL'), (None, 'RSHIFTEQUAL'), (None, 'OREQUAL'), (None, 'PLUSEQUAL'), (None, 'LSHIFTEQUAL'), (None, 'RBRACKET'), (None, 'MODEQUAL'), (None, 'XOREQUAL'), (None, 'LSHIFT'), (None, 'TIMES'), (None, 'LAND'), (None, 'MINUSMINUS'), (None, 'NE'), (None, 'LPAREN'), (None, 'ANDEQUAL'), (None, 'RSHIFT'), (None, 'LBRACKET'), (None, 'LBRACE'), (None, 'OR'), (None, 'RBRACE'), (None, 'ARROW'), (None, 'PLUS'), (None, 'CONDOP'), (None, 'LE'), (None, 'MINUSEQUAL'), (None, 'PERIOD'), (None, 'DIVEQUAL'), (None, 'EQ'), (None, 'GE'), (None, 'RPAREN'), (None, 'XOR'), (None, 'SEMI'), (None, 'AND'), (None, 'NOT'), (None, 'EQUALS'), (None, 'MOD'), (None, 'LT'), (None, 'MINUS'), (None, 'LNOT'), (None, 'DIVIDE'), (None, 'COMMA'), (None, 'GT'), (None, 'COLON')])]}
-_lexstateignore = {'INITIAL': ' \t\f'}
-_lexstateerrorf = {'INITIAL': 't_error'}
diff --git a/chall/ply-2.2/example/calc/calc.py b/chall/ply-2.2/example/calc/calc.py
deleted file mode 100644
index 5bf5d5d..0000000
--- a/chall/ply-2.2/example/calc/calc.py
+++ /dev/null
@@ -1,105 +0,0 @@
-# -----------------------------------------------------------------------------
-# calc.py
-#
-# A simple calculator with variables.   This is from O'Reilly's
-# "Lex and Yacc", p. 63.
-# -----------------------------------------------------------------------------
-
-import sys
-sys.path.insert(0,"../..")
-
-tokens = (
-    'NAME','NUMBER',
-    )
-
-literals = ['=','+','-','*','/', '(',')']
-
-# Tokens
-
-t_NAME    = r'[a-zA-Z_][a-zA-Z0-9_]*'
-
-def t_NUMBER(t):
-    r'\d+'
-    try:
-        t.value = int(t.value)
-    except ValueError:
-        print "Integer value too large", t.value
-        t.value = 0
-    return t
-
-t_ignore = " \t"
-
-def t_newline(t):
-    r'\n+'
-    t.lexer.lineno += t.value.count("\n")
-    
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-    
-# Build the lexer
-import ply.lex as lex
-lex.lex()
-
-# Parsing rules
-
-precedence = (
-    ('left','+','-'),
-    ('left','*','/'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(p):
-    'statement : NAME "=" expression'
-    names[p[1]] = p[3]
-
-def p_statement_expr(p):
-    'statement : expression'
-    print p[1]
-
-def p_expression_binop(p):
-    '''expression : expression '+' expression
-                  | expression '-' expression
-                  | expression '*' expression
-                  | expression '/' expression'''
-    if p[2] == '+'  : p[0] = p[1] + p[3]
-    elif p[2] == '-': p[0] = p[1] - p[3]
-    elif p[2] == '*': p[0] = p[1] * p[3]
-    elif p[2] == '/': p[0] = p[1] / p[3]
-
-def p_expression_uminus(p):
-    "expression : '-' expression %prec UMINUS"
-    p[0] = -p[2]
-
-def p_expression_group(p):
-    "expression : '(' expression ')'"
-    p[0] = p[2]
-
-def p_expression_number(p):
-    "expression : NUMBER"
-    p[0] = p[1]
-
-def p_expression_name(p):
-    "expression : NAME"
-    try:
-        p[0] = names[p[1]]
-    except LookupError:
-        print "Undefined name '%s'" % p[1]
-        p[0] = 0
-
-def p_error(p):
-    print "Syntax error at '%s'" % p.value
-
-import ply.yacc as yacc
-yacc.yacc()
-
-while 1:
-    try:
-        s = raw_input('calc > ')
-    except EOFError:
-        break
-    if not s: continue
-    yacc.parse(s)
diff --git a/chall/ply-2.2/example/classcalc/calc.py b/chall/ply-2.2/example/classcalc/calc.py
deleted file mode 100755
index 7ec09a6..0000000
--- a/chall/ply-2.2/example/classcalc/calc.py
+++ /dev/null
@@ -1,152 +0,0 @@
-#!/usr/bin/env python
-
-# -----------------------------------------------------------------------------
-# calc.py
-#
-# A simple calculator with variables.   This is from O'Reilly's
-# "Lex and Yacc", p. 63.
-#
-# Class-based example contributed to PLY by David McNab
-# -----------------------------------------------------------------------------
-
-import sys
-sys.path.insert(0,"../..")
-
-import readline
-import ply.lex as lex
-import ply.yacc as yacc
-import os
-
-class Parser:
-    """
-    Base class for a lexer/parser that has the rules defined as methods
-    """
-    tokens = ()
-    precedence = ()
-
-    def __init__(self, **kw):
-        self.debug = kw.get('debug', 0)
-        self.names = { }
-        try:
-            modname = os.path.split(os.path.splitext(__file__)[0])[1] + "_" + self.__class__.__name__
-        except:
-            modname = "parser"+"_"+self.__class__.__name__
-        self.debugfile = modname + ".dbg"
-        self.tabmodule = modname + "_" + "parsetab"
-        #print self.debugfile, self.tabmodule
-
-        # Build the lexer and parser
-        lex.lex(module=self, debug=self.debug)
-        yacc.yacc(module=self,
-                  debug=self.debug,
-                  debugfile=self.debugfile,
-                  tabmodule=self.tabmodule)
-
-    def run(self):
-        while 1:
-            try:
-                s = raw_input('calc > ')
-            except EOFError:
-                break
-            if not s: continue
-            yacc.parse(s)
-
-    
-class Calc(Parser):
-
-    tokens = (
-        'NAME','NUMBER',
-        'PLUS','MINUS','EXP', 'TIMES','DIVIDE','EQUALS',
-        'LPAREN','RPAREN',
-        )
-
-    # Tokens
-
-    t_PLUS    = r'\+'
-    t_MINUS   = r'-'
-    t_EXP     = r'\*\*'
-    t_TIMES   = r'\*'
-    t_DIVIDE  = r'/'
-    t_EQUALS  = r'='
-    t_LPAREN  = r'\('
-    t_RPAREN  = r'\)'
-    t_NAME    = r'[a-zA-Z_][a-zA-Z0-9_]*'
-
-    def t_NUMBER(self, t):
-        r'\d+'
-        try:
-            t.value = int(t.value)
-        except ValueError:
-            print "Integer value too large", t.value
-            t.value = 0
-        #print "parsed number %s" % repr(t.value)
-        return t
-
-    t_ignore = " \t"
-
-    def t_newline(self, t):
-        r'\n+'
-        t.lexer.lineno += t.value.count("\n")
-    
-    def t_error(self, t):
-        print "Illegal character '%s'" % t.value[0]
-        t.lexer.skip(1)
-
-    # Parsing rules
-
-    precedence = (
-        ('left','PLUS','MINUS'),
-        ('left','TIMES','DIVIDE'),
-        ('left', 'EXP'),
-        ('right','UMINUS'),
-        )
-
-    def p_statement_assign(self, p):
-        'statement : NAME EQUALS expression'
-        self.names[p[1]] = p[3]
-
-    def p_statement_expr(self, p):
-        'statement : expression'
-        print p[1]
-
-    def p_expression_binop(self, p):
-        """
-        expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression
-                  | expression EXP expression
-        """
-        #print [repr(p[i]) for i in range(0,4)]
-        if p[2] == '+'  : p[0] = p[1] + p[3]
-        elif p[2] == '-': p[0] = p[1] - p[3]
-        elif p[2] == '*': p[0] = p[1] * p[3]
-        elif p[2] == '/': p[0] = p[1] / p[3]
-        elif p[2] == '**': p[0] = p[1] ** p[3]
-
-    def p_expression_uminus(self, p):
-        'expression : MINUS expression %prec UMINUS'
-        p[0] = -p[2]
-
-    def p_expression_group(self, p):
-        'expression : LPAREN expression RPAREN'
-        p[0] = p[2]
-
-    def p_expression_number(self, p):
-        'expression : NUMBER'
-        p[0] = p[1]
-
-    def p_expression_name(self, p):
-        'expression : NAME'
-        try:
-            p[0] = self.names[p[1]]
-        except LookupError:
-            print "Undefined name '%s'" % p[1]
-            p[0] = 0
-
-    def p_error(self, p):
-        print "Syntax error at '%s'" % p.value
-
-if __name__ == '__main__':
-    calc = Calc()
-    calc.run()
diff --git a/chall/ply-2.2/example/cleanup.sh b/chall/ply-2.2/example/cleanup.sh
deleted file mode 100755
index 3e115f4..0000000
--- a/chall/ply-2.2/example/cleanup.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/bin/sh
-rm -f */*.pyc */parsetab.py */parser.out */*~ */*.class
diff --git a/chall/ply-2.2/example/hedit/hedit.py b/chall/ply-2.2/example/hedit/hedit.py
deleted file mode 100644
index a3c58c7..0000000
--- a/chall/ply-2.2/example/hedit/hedit.py
+++ /dev/null
@@ -1,48 +0,0 @@
-# -----------------------------------------------------------------------------
-# hedit.py
-#
-# Paring of Fortran H Edit descriptions (Contributed by Pearu Peterson)
-#
-# These tokens can't be easily tokenized because they are of the following
-# form:
-#
-#   nHc1...cn
-#
-# where n is a positive integer and c1 ... cn are characters.
-#
-# This example shows how to modify the state of the lexer to parse
-# such tokens
-# -----------------------------------------------------------------------------
-
-import sys
-sys.path.insert(0,"../..")
-
-
-tokens = (
-    'H_EDIT_DESCRIPTOR',
-    )
-
-# Tokens
-t_ignore = " \t\n"
-
-def t_H_EDIT_DESCRIPTOR(t):
-    r"\d+H.*"                     # This grabs all of the remaining text
-    i = t.value.index('H')
-    n = eval(t.value[:i])
-    
-    # Adjust the tokenizing position
-    t.lexer.lexpos -= len(t.value) - (i+1+n)
-    
-    t.value = t.value[i+1:i+1+n]
-    return t                                  
-    
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-    
-# Build the lexer
-import ply.lex as lex
-lex.lex()
-lex.runmain()
-
-
diff --git a/chall/ply-2.2/example/newclasscalc/calc.py b/chall/ply-2.2/example/newclasscalc/calc.py
deleted file mode 100755
index b021b6b..0000000
--- a/chall/ply-2.2/example/newclasscalc/calc.py
+++ /dev/null
@@ -1,155 +0,0 @@
-#!/usr/bin/env python
-
-# -----------------------------------------------------------------------------
-# calc.py
-#
-# A simple calculator with variables.   This is from O'Reilly's
-# "Lex and Yacc", p. 63.
-#
-# Class-based example contributed to PLY by David McNab.
-#
-# Modified to use new-style classes.   Test case.
-# -----------------------------------------------------------------------------
-
-import sys
-sys.path.insert(0,"../..")
-
-import readline
-import ply.lex as lex
-import ply.yacc as yacc
-import os
-
-class Parser(object):
-    """
-    Base class for a lexer/parser that has the rules defined as methods
-    """
-    tokens = ()
-    precedence = ()
-
-
-    def __init__(self, **kw):
-        self.debug = kw.get('debug', 0)
-        self.names = { }
-        try:
-            modname = os.path.split(os.path.splitext(__file__)[0])[1] + "_" + self.__class__.__name__
-        except:
-            modname = "parser"+"_"+self.__class__.__name__
-        self.debugfile = modname + ".dbg"
-        self.tabmodule = modname + "_" + "parsetab"
-        #print self.debugfile, self.tabmodule
-
-        # Build the lexer and parser
-        lex.lex(module=self, debug=self.debug)
-        yacc.yacc(module=self,
-                  debug=self.debug,
-                  debugfile=self.debugfile,
-                  tabmodule=self.tabmodule)
-
-    def run(self):
-        while 1:
-            try:
-                s = raw_input('calc > ')
-            except EOFError:
-                break
-            if not s: continue     
-            yacc.parse(s)
-
-    
-class Calc(Parser):
-
-    tokens = (
-        'NAME','NUMBER',
-        'PLUS','MINUS','EXP', 'TIMES','DIVIDE','EQUALS',
-        'LPAREN','RPAREN',
-        )
-
-    # Tokens
-
-    t_PLUS    = r'\+'
-    t_MINUS   = r'-'
-    t_EXP     = r'\*\*'
-    t_TIMES   = r'\*'
-    t_DIVIDE  = r'/'
-    t_EQUALS  = r'='
-    t_LPAREN  = r'\('
-    t_RPAREN  = r'\)'
-    t_NAME    = r'[a-zA-Z_][a-zA-Z0-9_]*'
-
-    def t_NUMBER(self, t):
-        r'\d+'
-        try:
-            t.value = int(t.value)
-        except ValueError:
-            print "Integer value too large", t.value
-            t.value = 0
-        #print "parsed number %s" % repr(t.value)
-        return t
-
-    t_ignore = " \t"
-
-    def t_newline(self, t):
-        r'\n+'
-        t.lexer.lineno += t.value.count("\n")
-    
-    def t_error(self, t):
-        print "Illegal character '%s'" % t.value[0]
-        t.lexer.skip(1)
-
-    # Parsing rules
-
-    precedence = (
-        ('left','PLUS','MINUS'),
-        ('left','TIMES','DIVIDE'),
-        ('left', 'EXP'),
-        ('right','UMINUS'),
-        )
-
-    def p_statement_assign(self, p):
-        'statement : NAME EQUALS expression'
-        self.names[p[1]] = p[3]
-
-    def p_statement_expr(self, p):
-        'statement : expression'
-        print p[1]
-
-    def p_expression_binop(self, p):
-        """
-        expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression
-                  | expression EXP expression
-        """
-        #print [repr(p[i]) for i in range(0,4)]
-        if p[2] == '+'  : p[0] = p[1] + p[3]
-        elif p[2] == '-': p[0] = p[1] - p[3]
-        elif p[2] == '*': p[0] = p[1] * p[3]
-        elif p[2] == '/': p[0] = p[1] / p[3]
-        elif p[2] == '**': p[0] = p[1] ** p[3]
-
-    def p_expression_uminus(self, p):
-        'expression : MINUS expression %prec UMINUS'
-        p[0] = -p[2]
-
-    def p_expression_group(self, p):
-        'expression : LPAREN expression RPAREN'
-        p[0] = p[2]
-
-    def p_expression_number(self, p):
-        'expression : NUMBER'
-        p[0] = p[1]
-
-    def p_expression_name(self, p):
-        'expression : NAME'
-        try:
-            p[0] = self.names[p[1]]
-        except LookupError:
-            print "Undefined name '%s'" % p[1]
-            p[0] = 0
-
-    def p_error(self, p):
-        print "Syntax error at '%s'" % p.value
-
-if __name__ == '__main__':
-    calc = Calc()
-    calc.run()
diff --git a/chall/ply-2.2/example/optcalc/README b/chall/ply-2.2/example/optcalc/README
deleted file mode 100644
index 6d196f0..0000000
--- a/chall/ply-2.2/example/optcalc/README
+++ /dev/null
@@ -1,9 +0,0 @@
-An example showing how to use Python optimized mode.
-To run:
-
-  - First run 'python calc.py'
-
-  - Then run 'python -OO calc.py'
-
-If working corretly, the second version should run the
-same way.
diff --git a/chall/ply-2.2/example/optcalc/calc.py b/chall/ply-2.2/example/optcalc/calc.py
deleted file mode 100644
index 325f67c..0000000
--- a/chall/ply-2.2/example/optcalc/calc.py
+++ /dev/null
@@ -1,113 +0,0 @@
-# -----------------------------------------------------------------------------
-# calc.py
-#
-# A simple calculator with variables.   This is from O'Reilly's
-# "Lex and Yacc", p. 63.
-# -----------------------------------------------------------------------------
-
-import sys
-sys.path.insert(0,"../..")
-
-tokens = (
-    'NAME','NUMBER',
-    'PLUS','MINUS','TIMES','DIVIDE','EQUALS',
-    'LPAREN','RPAREN',
-    )
-
-# Tokens
-
-t_PLUS    = r'\+'
-t_MINUS   = r'-'
-t_TIMES   = r'\*'
-t_DIVIDE  = r'/'
-t_EQUALS  = r'='
-t_LPAREN  = r'\('
-t_RPAREN  = r'\)'
-t_NAME    = r'[a-zA-Z_][a-zA-Z0-9_]*'
-
-def t_NUMBER(t):
-    r'\d+'
-    try:
-        t.value = int(t.value)
-    except ValueError:
-        print "Integer value too large", t.value
-        t.value = 0
-    return t
-
-t_ignore = " \t"
-
-def t_newline(t):
-    r'\n+'
-    t.lexer.lineno += t.value.count("\n")
-    
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-    
-# Build the lexer
-import ply.lex as lex
-lex.lex(optimize=1)
-
-# Parsing rules
-
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[2] == '/': t[0] = t[1] / t[3]
-    elif t[2] == '<': t[0] = t[1] < t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-import ply.yacc as yacc
-yacc.yacc(optimize=1)
-
-while 1:
-    try:
-        s = raw_input('calc > ')
-    except EOFError:
-        break
-    yacc.parse(s)
-
diff --git a/chall/ply-2.2/example/unicalc/calc.py b/chall/ply-2.2/example/unicalc/calc.py
deleted file mode 100644
index 7e60433..0000000
--- a/chall/ply-2.2/example/unicalc/calc.py
+++ /dev/null
@@ -1,114 +0,0 @@
-# -----------------------------------------------------------------------------
-# calc.py
-#
-# A simple calculator with variables.   This is from O'Reilly's
-# "Lex and Yacc", p. 63.
-#
-# This example uses unicode strings for tokens, docstrings, and input.
-# -----------------------------------------------------------------------------
-
-import sys
-sys.path.insert(0,"../..")
-
-tokens = (
-    'NAME','NUMBER',
-    'PLUS','MINUS','TIMES','DIVIDE','EQUALS',
-    'LPAREN','RPAREN',
-    )
-
-# Tokens
-
-t_PLUS    = ur'\+'
-t_MINUS   = ur'-'
-t_TIMES   = ur'\*'
-t_DIVIDE  = ur'/'
-t_EQUALS  = ur'='
-t_LPAREN  = ur'\('
-t_RPAREN  = ur'\)'
-t_NAME    = ur'[a-zA-Z_][a-zA-Z0-9_]*'
-
-def t_NUMBER(t):
-    ur'\d+'
-    try:
-        t.value = int(t.value)
-    except ValueError:
-        print "Integer value too large", t.value
-        t.value = 0
-    return t
-
-t_ignore = u" \t"
-
-def t_newline(t):
-    ur'\n+'
-    t.lexer.lineno += t.value.count("\n")
-    
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-    
-# Build the lexer
-import ply.lex as lex
-lex.lex()
-
-# Parsing rules
-
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(p):
-    'statement : NAME EQUALS expression'
-    names[p[1]] = p[3]
-
-def p_statement_expr(p):
-    'statement : expression'
-    print p[1]
-
-def p_expression_binop(p):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if p[2] == u'+'  : p[0] = p[1] + p[3]
-    elif p[2] == u'-': p[0] = p[1] - p[3]
-    elif p[2] == u'*': p[0] = p[1] * p[3]
-    elif p[2] == u'/': p[0] = p[1] / p[3]
-
-def p_expression_uminus(p):
-    'expression : MINUS expression %prec UMINUS'
-    p[0] = -p[2]
-
-def p_expression_group(p):
-    'expression : LPAREN expression RPAREN'
-    p[0] = p[2]
-
-def p_expression_number(p):
-    'expression : NUMBER'
-    p[0] = p[1]
-
-def p_expression_name(p):
-    'expression : NAME'
-    try:
-        p[0] = names[p[1]]
-    except LookupError:
-        print "Undefined name '%s'" % p[1]
-        p[0] = 0
-
-def p_error(p):
-    print "Syntax error at '%s'" % p.value
-
-import ply.yacc as yacc
-yacc.yacc()
-
-while 1:
-    try:
-        s = raw_input('calc > ')
-    except EOFError:
-        break
-    if not s: continue
-    yacc.parse(unicode(s))
diff --git a/chall/ply-2.2/example/yply/README b/chall/ply-2.2/example/yply/README
deleted file mode 100644
index bfadf36..0000000
--- a/chall/ply-2.2/example/yply/README
+++ /dev/null
@@ -1,41 +0,0 @@
-yply.py
-
-This example implements a program yply.py that converts a UNIX-yacc
-specification file into a PLY-compatible program.  To use, simply
-run it like this:
-
-   % python yply.py [-nocode] inputfile.y >myparser.py
-
-The output of this program is Python code. In the output,
-any C code in the original file is included, but is commented out.
-If you use the -nocode option, then all of the C code in the
-original file is just discarded.
-
-To use the resulting grammer with PLY, you'll need to edit the
-myparser.py file. Within this file, some stub code is included that
-can be used to test the construction of the parsing tables. However,
-you'll need to do more editing to make a workable parser.
-
-Disclaimer:  This just an example I threw together in an afternoon.
-It might have some bugs.  However, it worked when I tried it on
-a yacc-specified C++ parser containing 442 rules and 855 parsing
-states.
-
-Comments:
-
-1. This example does not parse specification files meant for lex/flex.
-   You'll need to specify the tokenizer on your own.
-
-2. This example shows a number of interesting PLY features including
-    
-     - Parsing of literal text delimited by nested parentheses
-     - Some interaction between the parser and the lexer.
-     - Use of literals in the grammar specification
-     - One pass compilation.  The program just emits the result,
-       there is no intermediate parse tree.
-
-3. This program could probably be cleaned up and enhanced a lot.
-   It would be great if someone wanted to work on this (hint).
-
--Dave
-       
diff --git a/chall/ply-2.2/example/yply/ylex.py b/chall/ply-2.2/example/yply/ylex.py
deleted file mode 100644
index 67d2354..0000000
--- a/chall/ply-2.2/example/yply/ylex.py
+++ /dev/null
@@ -1,112 +0,0 @@
-# lexer for yacc-grammars
-#
-# Author: David Beazley (dave@dabeaz.com)
-# Date  : October 2, 2006
-
-import sys
-sys.path.append("../..")
-
-from ply import *
-
-tokens = (
-    'LITERAL','SECTION','TOKEN','LEFT','RIGHT','PREC','START','TYPE','NONASSOC','UNION','CODE',
-    'ID','QLITERAL','NUMBER',
-)
-
-states = (('code','exclusive'),)
-
-literals = [ ';', ',', '<', '>', '|',':' ]
-t_ignore = ' \t'
-
-t_TOKEN     = r'%token'
-t_LEFT      = r'%left'
-t_RIGHT     = r'%right'
-t_NONASSOC  = r'%nonassoc'
-t_PREC      = r'%prec'
-t_START     = r'%start'
-t_TYPE      = r'%type'
-t_UNION     = r'%union'
-t_ID        = r'[a-zA-Z_][a-zA-Z_0-9]*'
-t_QLITERAL  = r'''(?P<quote>['"]).*?(?P=quote)'''
-t_NUMBER    = r'\d+'
-
-def t_SECTION(t):
-    r'%%'
-    if getattr(t.lexer,"lastsection",0):
-         t.value = t.lexer.lexdata[t.lexpos+2:]
-         t.lexer.lexpos = len(t.lexer.lexdata)
-    else:
-         t.lexer.lastsection = 0
-    return t
-
-# Comments
-def t_ccomment(t):
-    r'/\*(.|\n)*?\*/'
-    t.lineno += t.value.count('\n')
-
-t_ignore_cppcomment = r'//.*'
-
-def t_LITERAL(t):
-   r'%\{(.|\n)*?%\}'
-   t.lexer.lineno += t.value.count("\n")
-   return t
-
-def t_NEWLINE(t):
-   r'\n'
-   t.lexer.lineno += 1
-
-def t_code(t):
-   r'\{'
-   t.lexer.codestart = t.lexpos
-   t.lexer.level = 1
-   t.lexer.begin('code')
-
-def t_code_ignore_string(t):
-    r'\"([^\\\n]|(\\.))*?\"'
-
-def t_code_ignore_char(t):
-    r'\'([^\\\n]|(\\.))*?\''
-
-def t_code_ignore_comment(t):
-   r'/\*(.|\n)*?\*/'
-
-def t_code_ignore_cppcom(t):
-   r'//.*'
-
-def t_code_lbrace(t):
-    r'\{'
-    t.lexer.level += 1
-
-def t_code_rbrace(t):
-    r'\}'
-    t.lexer.level -= 1
-    if t.lexer.level == 0:
-         t.type = 'CODE'
-         t.value = t.lexer.lexdata[t.lexer.codestart:t.lexpos+1]
-         t.lexer.begin('INITIAL')
-         t.lexer.lineno += t.value.count('\n')
-         return t
-
-t_code_ignore_nonspace   = r'[^\s\}\'\"\{]+'
-t_code_ignore_whitespace = r'\s+'
-t_code_ignore = ""
-
-def t_code_error(t):
-    raise RuntimeError
-
-def t_error(t):
-    print "%d: Illegal character '%s'" % (t.lineno, t.value[0])
-    print t.value
-    t.lexer.skip(1)
-
-lex.lex()
-
-if __name__ == '__main__':
-    lex.runmain()
-
-            
-            
-           
-
-        
-
diff --git a/chall/ply-2.2/example/yply/yparse.py b/chall/ply-2.2/example/yply/yparse.py
deleted file mode 100644
index ab5b884..0000000
--- a/chall/ply-2.2/example/yply/yparse.py
+++ /dev/null
@@ -1,217 +0,0 @@
-# parser for Unix yacc-based grammars
-#
-# Author: David Beazley (dave@dabeaz.com)
-# Date  : October 2, 2006
-
-import ylex
-tokens = ylex.tokens
-
-from ply import *
-
-tokenlist = []
-preclist  = []
-
-emit_code = 1
-
-def p_yacc(p):
-    '''yacc : defsection rulesection'''
-
-def p_defsection(p):
-    '''defsection : definitions SECTION
-                  | SECTION'''
-    p.lexer.lastsection = 1
-    print "tokens = ", repr(tokenlist)
-    print
-    print "precedence = ", repr(preclist)
-    print
-    print "# -------------- RULES ----------------"
-    print 
-
-def p_rulesection(p):
-    '''rulesection : rules SECTION'''
-
-    print "# -------------- RULES END ----------------"
-    print_code(p[2],0)
-
-def p_definitions(p):
-    '''definitions : definitions definition
-                   | definition'''
-
-def p_definition_literal(p):
-    '''definition : LITERAL'''
-    print_code(p[1],0)
-
-def p_definition_start(p):
-    '''definition : START ID'''
-    print "start = '%s'" % p[2]
-
-def p_definition_token(p):
-    '''definition : toktype opttype idlist optsemi '''
-    for i in p[3]:
-       if i[0] not in "'\"":
-           tokenlist.append(i)
-    if p[1] == '%left':
-        preclist.append(('left',) + tuple(p[3]))
-    elif p[1] == '%right':
-        preclist.append(('right',) + tuple(p[3]))
-    elif p[1] == '%nonassoc':
-        preclist.append(('nonassoc',)+ tuple(p[3]))
-
-def p_toktype(p):
-    '''toktype : TOKEN
-               | LEFT
-               | RIGHT
-               | NONASSOC'''
-    p[0] = p[1]
-
-def p_opttype(p):
-    '''opttype : '<' ID '>'
-               | empty'''
-
-def p_idlist(p):
-    '''idlist  : idlist optcomma tokenid
-               | tokenid'''
-    if len(p) == 2:
-        p[0] = [p[1]]
-    else:
-        p[0] = p[1]
-        p[1].append(p[3])
-
-def p_tokenid(p):
-    '''tokenid : ID 
-               | ID NUMBER
-               | QLITERAL
-               | QLITERAL NUMBER'''
-    p[0] = p[1]
-    
-def p_optsemi(p):
-    '''optsemi : ';'
-               | empty'''
-
-def p_optcomma(p):
-    '''optcomma : ','
-                | empty'''
-
-def p_definition_type(p):
-    '''definition : TYPE '<' ID '>' namelist optsemi'''
-    # type declarations are ignored
-
-def p_namelist(p):
-    '''namelist : namelist optcomma ID
-                | ID'''
-
-def p_definition_union(p):
-    '''definition : UNION CODE optsemi'''
-    # Union declarations are ignored
-
-def p_rules(p):
-    '''rules   : rules rule
-               | rule'''
-    if len(p) == 2:
-       rule = p[1]
-    else:
-       rule = p[2]
-
-    # Print out a Python equivalent of this rule
-
-    embedded = [ ]      # Embedded actions (a mess)
-    embed_count = 0
-
-    rulename = rule[0]
-    rulecount = 1
-    for r in rule[1]:
-        # r contains one of the rule possibilities
-        print "def p_%s_%d(p):" % (rulename,rulecount)
-        prod = []
-        prodcode = ""
-        for i in range(len(r)):
-             item = r[i]
-             if item[0] == '{':    # A code block
-                  if i == len(r) - 1:
-                      prodcode = item
-                      break
-                  else:
-                      # an embedded action
-                      embed_name = "_embed%d_%s" % (embed_count,rulename)
-                      prod.append(embed_name)
-                      embedded.append((embed_name,item))
-                      embed_count += 1
-             else:
-                  prod.append(item)
-        print "    '''%s : %s'''" % (rulename, " ".join(prod))
-        # Emit code
-        print_code(prodcode,4)
-        print
-        rulecount += 1
-
-    for e,code in embedded:
-        print "def p_%s(p):" % e
-        print "    '''%s : '''" % e
-        print_code(code,4)
-        print
-
-def p_rule(p):
-   '''rule : ID ':' rulelist ';' '''
-   p[0] = (p[1],[p[3]])
-
-def p_rule2(p):
-   '''rule : ID ':' rulelist morerules ';' '''
-   p[4].insert(0,p[3])
-   p[0] = (p[1],p[4])
-
-def p_rule_empty(p):
-   '''rule : ID ':' ';' '''
-   p[0] = (p[1],[[]])
-
-def p_rule_empty2(p):
-   '''rule : ID ':' morerules ';' '''
-   
-   p[3].insert(0,[])
-   p[0] = (p[1],p[3])
-
-def p_morerules(p):
-   '''morerules : morerules '|' rulelist
-                | '|' rulelist
-                | '|'  '''
- 
-   if len(p) == 2:   
-       p[0] = [[]]
-   elif len(p) == 3: 
-       p[0] = [p[2]]
-   else:
-       p[0] = p[1]
-       p[0].append(p[3])
-
-#   print "morerules", len(p), p[0]
-
-def p_rulelist(p):
-   '''rulelist : rulelist ruleitem
-               | ruleitem'''
-
-   if len(p) == 2:
-        p[0] = [p[1]]
-   else:
-        p[0] = p[1]
-        p[1].append(p[2])
-
-def p_ruleitem(p):
-   '''ruleitem : ID
-               | QLITERAL
-               | CODE
-               | PREC'''
-   p[0] = p[1]
-
-def p_empty(p):
-    '''empty : '''
-
-def p_error(p):
-    pass
-
-yacc.yacc(debug=0)
-
-def print_code(code,indent):
-    if not emit_code: return
-    codelines = code.splitlines()
-    for c in codelines:
-         print "%s# %s" % (" "*indent,c)
-
diff --git a/chall/ply-2.2/example/yply/yply.py b/chall/ply-2.2/example/yply/yply.py
deleted file mode 100755
index a439817..0000000
--- a/chall/ply-2.2/example/yply/yply.py
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/usr/local/bin/python
-# yply.py
-#
-# Author: David Beazley (dave@dabeaz.com)
-# Date  : October 2, 2006
-#
-# Converts a UNIX-yacc specification file into a PLY-compatible
-# specification.   To use, simply do this:
-#
-#   % python yply.py [-nocode] inputfile.y >myparser.py
-#
-# The output of this program is Python code. In the output,
-# any C code in the original file is included, but is commented.
-# If you use the -nocode option, then all of the C code in the
-# original file is discarded.
-#
-# Disclaimer:  This just an example I threw together in an afternoon.
-# It might have some bugs.  However, it worked when I tried it on
-# a yacc-specified C++ parser containing 442 rules and 855 parsing
-# states.
-#
-
-import sys
-sys.path.insert(0,"../..")
-
-import ylex
-import yparse
-
-from ply import *
-
-if len(sys.argv) == 1:
-    print "usage : yply.py [-nocode] inputfile"
-    raise SystemExit
-
-if len(sys.argv) == 3:
-    if sys.argv[1] == '-nocode':
-         yparse.emit_code = 0
-    else:
-         print "Unknown option '%s'" % sys.argv[1]
-         raise SystemExit
-    filename = sys.argv[2]
-else:
-    filename = sys.argv[1]
-
-yacc.parse(open(filename).read())
-
-print """
-if __name__ == '__main__':
-    from ply import *
-    yacc.yacc()
-"""
-
-
diff --git a/chall/ply-2.2/ply/__init__.py b/chall/ply-2.2/ply/__init__.py
deleted file mode 100644
index 853a985..0000000
--- a/chall/ply-2.2/ply/__init__.py
+++ /dev/null
@@ -1,4 +0,0 @@
-# PLY package
-# Author: David Beazley (dave@dabeaz.com)
-
-__all__ = ['lex','yacc']
diff --git a/chall/ply-2.2/ply/__init__.pyc b/chall/ply-2.2/ply/__init__.pyc
deleted file mode 100644
index 99d3089..0000000
Binary files a/chall/ply-2.2/ply/__init__.pyc and /dev/null differ
diff --git a/chall/ply-2.2/ply/lex.py b/chall/ply-2.2/ply/lex.py
deleted file mode 100644
index c149366..0000000
--- a/chall/ply-2.2/ply/lex.py
+++ /dev/null
@@ -1,866 +0,0 @@
-#-----------------------------------------------------------------------------
-# ply: lex.py
-#
-# Author: David M. Beazley (dave@dabeaz.com)
-#
-# Copyright (C) 2001-2006, David M. Beazley
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public
-# License as published by the Free Software Foundation; either
-# version 2.1 of the License, or (at your option) any later version.
-# 
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Lesser General Public License for more details.
-# 
-# You should have received a copy of the GNU Lesser General Public
-# License along with this library; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-# 
-# See the file COPYING for a complete copy of the LGPL.
-#-----------------------------------------------------------------------------
-
-__version__ = "2.2"
-
-import re, sys, types
-
-# Regular expression used to match valid token names
-_is_identifier = re.compile(r'^[a-zA-Z0-9_]+$')
-
-# Available instance types.  This is used when lexers are defined by a class.
-# It's a little funky because I want to preserve backwards compatibility
-# with Python 2.0 where types.ObjectType is undefined.
-
-try:
-   _INSTANCETYPE = (types.InstanceType, types.ObjectType)
-except AttributeError:
-   _INSTANCETYPE = types.InstanceType
-   class object: pass       # Note: needed if no new-style classes present
-
-# Exception thrown when invalid token encountered and no default error
-# handler is defined.
-class LexError(Exception):
-    def __init__(self,message,s):
-         self.args = (message,)
-         self.text = s
-
-# Token class
-class LexToken(object):
-    def __str__(self):
-        return "LexToken(%s,%r,%d,%d)" % (self.type,self.value,self.lineno,self.lexpos)
-    def __repr__(self):
-        return str(self)
-    def skip(self,n):
-        self.lexer.skip(n)
-
-# -----------------------------------------------------------------------------
-# Lexer class
-#
-# This class encapsulates all of the methods and data associated with a lexer.
-#
-#    input()          -  Store a new string in the lexer
-#    token()          -  Get the next token
-# -----------------------------------------------------------------------------
-
-class Lexer:
-    def __init__(self):
-        self.lexre = None             # Master regular expression. This is a list of 
-                                      # tuples (re,findex) where re is a compiled
-                                      # regular expression and findex is a list
-                                      # mapping regex group numbers to rules
-        self.lexretext = None         # Current regular expression strings
-        self.lexstatere = {}          # Dictionary mapping lexer states to master regexs
-        self.lexstateretext = {}      # Dictionary mapping lexer states to regex strings
-        self.lexstate = "INITIAL"     # Current lexer state
-        self.lexstatestack = []       # Stack of lexer states
-        self.lexstateinfo = None      # State information
-        self.lexstateignore = {}      # Dictionary of ignored characters for each state
-        self.lexstateerrorf = {}      # Dictionary of error functions for each state
-        self.lexreflags = 0           # Optional re compile flags
-        self.lexdata = None           # Actual input data (as a string)
-        self.lexpos = 0               # Current position in input text
-        self.lexlen = 0               # Length of the input text
-        self.lexerrorf = None         # Error rule (if any)
-        self.lextokens = None         # List of valid tokens
-        self.lexignore = ""           # Ignored characters
-        self.lexliterals = ""         # Literal characters that can be passed through
-        self.lexmodule = None         # Module
-        self.lineno = 1               # Current line number
-        self.lexdebug = 0             # Debugging mode
-        self.lexoptimize = 0          # Optimized mode
-
-    def clone(self,object=None):
-        c = Lexer()
-        c.lexstatere = self.lexstatere
-        c.lexstateinfo = self.lexstateinfo
-        c.lexstateretext = self.lexstateretext
-        c.lexstate = self.lexstate
-        c.lexstatestack = self.lexstatestack
-        c.lexstateignore = self.lexstateignore
-        c.lexstateerrorf = self.lexstateerrorf
-        c.lexreflags = self.lexreflags
-        c.lexdata = self.lexdata
-        c.lexpos = self.lexpos
-        c.lexlen = self.lexlen
-        c.lextokens = self.lextokens
-        c.lexdebug = self.lexdebug
-        c.lineno = self.lineno
-        c.lexoptimize = self.lexoptimize
-        c.lexliterals = self.lexliterals
-        c.lexmodule   = self.lexmodule
-
-        # If the object parameter has been supplied, it means we are attaching the
-        # lexer to a new object.  In this case, we have to rebind all methods in
-        # the lexstatere and lexstateerrorf tables.
-
-        if object:
-            newtab = { }
-            for key, ritem in self.lexstatere.items():
-                newre = []
-                for cre, findex in ritem:
-                     newfindex = []
-                     for f in findex:
-                         if not f or not f[0]:
-                             newfindex.append(f)
-                             continue
-                         newfindex.append((getattr(object,f[0].__name__),f[1]))
-                newre.append((cre,newfindex))
-                newtab[key] = newre
-            c.lexstatere = newtab
-            c.lexstateerrorf = { }
-            for key, ef in self.lexstateerrorf.items():
-                c.lexstateerrorf[key] = getattr(object,ef.__name__)
-            c.lexmodule = object
-
-        # Set up other attributes
-        c.begin(c.lexstate)
-        return c
-
-    # ------------------------------------------------------------
-    # writetab() - Write lexer information to a table file
-    # ------------------------------------------------------------
-    def writetab(self,tabfile):
-        tf = open(tabfile+".py","w")
-        tf.write("# %s.py. This file automatically created by PLY (version %s). Don't edit!\n" % (tabfile,__version__))
-        tf.write("_lextokens    = %s\n" % repr(self.lextokens))
-        tf.write("_lexreflags   = %s\n" % repr(self.lexreflags))
-        tf.write("_lexliterals  = %s\n" % repr(self.lexliterals))
-        tf.write("_lexstateinfo = %s\n" % repr(self.lexstateinfo))
-        
-        tabre = { }
-        for key, lre in self.lexstatere.items():
-             titem = []
-             for i in range(len(lre)):
-                  titem.append((self.lexstateretext[key][i],_funcs_to_names(lre[i][1])))
-             tabre[key] = titem
-
-        tf.write("_lexstatere   = %s\n" % repr(tabre))
-        tf.write("_lexstateignore = %s\n" % repr(self.lexstateignore))
-
-        taberr = { }
-        for key, ef in self.lexstateerrorf.items():
-             if ef:
-                  taberr[key] = ef.__name__
-             else:
-                  taberr[key] = None
-        tf.write("_lexstateerrorf = %s\n" % repr(taberr))
-        tf.close()
-
-    # ------------------------------------------------------------
-    # readtab() - Read lexer information from a tab file
-    # ------------------------------------------------------------
-    def readtab(self,tabfile,fdict):
-        exec "import %s as lextab" % tabfile
-        self.lextokens      = lextab._lextokens
-        self.lexreflags     = lextab._lexreflags
-        self.lexliterals    = lextab._lexliterals
-        self.lexstateinfo   = lextab._lexstateinfo
-        self.lexstateignore = lextab._lexstateignore
-        self.lexstatere     = { }
-        self.lexstateretext = { }
-        for key,lre in lextab._lexstatere.items():
-             titem = []
-             txtitem = []
-             for i in range(len(lre)):
-                  titem.append((re.compile(lre[i][0],lextab._lexreflags),_names_to_funcs(lre[i][1],fdict)))
-                  txtitem.append(lre[i][0])
-             self.lexstatere[key] = titem
-             self.lexstateretext[key] = txtitem
-        self.lexstateerrorf = { }
-        for key,ef in lextab._lexstateerrorf.items():
-             self.lexstateerrorf[key] = fdict[ef]
-        self.begin('INITIAL')
-         
-    # ------------------------------------------------------------
-    # input() - Push a new string into the lexer
-    # ------------------------------------------------------------
-    def input(self,s):
-        if not (isinstance(s,types.StringType) or isinstance(s,types.UnicodeType)):
-            raise ValueError, "Expected a string"
-        self.lexdata = s
-        self.lexpos = 0
-        self.lexlen = len(s)
-
-    # ------------------------------------------------------------
-    # begin() - Changes the lexing state
-    # ------------------------------------------------------------
-    def begin(self,state):
-        if not self.lexstatere.has_key(state):
-            raise ValueError, "Undefined state"
-        self.lexre = self.lexstatere[state]
-        self.lexretext = self.lexstateretext[state]
-        self.lexignore = self.lexstateignore.get(state,"")
-        self.lexerrorf = self.lexstateerrorf.get(state,None)
-        self.lexstate = state
-
-    # ------------------------------------------------------------
-    # push_state() - Changes the lexing state and saves old on stack
-    # ------------------------------------------------------------
-    def push_state(self,state):
-        self.lexstatestack.append(self.lexstate)
-        self.begin(state)
-
-    # ------------------------------------------------------------
-    # pop_state() - Restores the previous state
-    # ------------------------------------------------------------
-    def pop_state(self):
-        self.begin(self.lexstatestack.pop())
-
-    # ------------------------------------------------------------
-    # current_state() - Returns the current lexing state
-    # ------------------------------------------------------------
-    def current_state(self):
-        return self.lexstate
-
-    # ------------------------------------------------------------
-    # skip() - Skip ahead n characters
-    # ------------------------------------------------------------
-    def skip(self,n):
-        self.lexpos += n
-
-    # ------------------------------------------------------------
-    # token() - Return the next token from the Lexer
-    #
-    # Note: This function has been carefully implemented to be as fast
-    # as possible.  Don't make changes unless you really know what
-    # you are doing
-    # ------------------------------------------------------------
-    def token(self):
-        # Make local copies of frequently referenced attributes
-        lexpos    = self.lexpos
-        lexlen    = self.lexlen
-        lexignore = self.lexignore
-        lexdata   = self.lexdata
-
-        while lexpos < lexlen:
-            # This code provides some short-circuit code for whitespace, tabs, and other ignored characters
-            if lexdata[lexpos] in lexignore:
-                lexpos += 1
-                continue
-
-            # Look for a regular expression match
-            for lexre,lexindexfunc in self.lexre:
-                m = lexre.match(lexdata,lexpos)
-                if not m: continue
-
-                # Set last match in lexer so that rules can access it if they want
-                self.lexmatch = m
-
-                # Create a token for return
-                tok = LexToken()
-                tok.value = m.group()
-                tok.lineno = self.lineno
-                tok.lexpos = lexpos
-                tok.lexer = self
-
-                lexpos = m.end()
-                i = m.lastindex
-                func,tok.type = lexindexfunc[i]
-                self.lexpos = lexpos
-
-                if not func:
-                   # If no token type was set, it's an ignored token
-                   if tok.type: return tok      
-                   break
-
-                # if func not callable, it means it's an ignored token                
-                if not callable(func):
-                   break 
-
-                # If token is processed by a function, call it
-                newtok = func(tok)
-                
-                # Every function must return a token, if nothing, we just move to next token
-                if not newtok: 
-                    lexpos = self.lexpos        # This is here in case user has updated lexpos.
-                    break
-                
-                # Verify type of the token.  If not in the token map, raise an error
-                if not self.lexoptimize:
-                    if not self.lextokens.has_key(newtok.type):
-                        raise LexError, ("%s:%d: Rule '%s' returned an unknown token type '%s'" % (
-                            func.func_code.co_filename, func.func_code.co_firstlineno,
-                            func.__name__, newtok.type),lexdata[lexpos:])
-
-                return newtok
-            else:
-                # No match, see if in literals
-                if lexdata[lexpos] in self.lexliterals:
-                    tok = LexToken()
-                    tok.value = lexdata[lexpos]
-                    tok.lineno = self.lineno
-                    tok.lexer = self
-                    tok.type = tok.value
-                    tok.lexpos = lexpos
-                    self.lexpos = lexpos + 1
-                    return tok
-        
-                # No match. Call t_error() if defined.
-                if self.lexerrorf:
-                    tok = LexToken()
-                    tok.value = self.lexdata[lexpos:]
-                    tok.lineno = self.lineno
-                    tok.type = "error"
-                    tok.lexer = self
-                    tok.lexpos = lexpos
-                    self.lexpos = lexpos
-                    newtok = self.lexerrorf(tok)
-                    if lexpos == self.lexpos:
-                        # Error method didn't change text position at all. This is an error.
-                        raise LexError, ("Scanning error. Illegal character '%s'" % (lexdata[lexpos]), lexdata[lexpos:])
-                    lexpos = self.lexpos
-                    if not newtok: continue
-                    return newtok
-
-                self.lexpos = lexpos
-                raise LexError, ("Illegal character '%s' at index %d" % (lexdata[lexpos],lexpos), lexdata[lexpos:])
-
-        self.lexpos = lexpos + 1
-        if self.lexdata is None:
-             raise RuntimeError, "No input string given with input()"
-        return None
-        
-# -----------------------------------------------------------------------------
-# _validate_file()
-#
-# This checks to see if there are duplicated t_rulename() functions or strings
-# in the parser input file.  This is done using a simple regular expression
-# match on each line in the filename.
-# -----------------------------------------------------------------------------
-
-def _validate_file(filename):
-    import os.path
-    base,ext = os.path.splitext(filename)
-    if ext != '.py': return 1        # No idea what the file is. Return OK
-
-    try:
-        f = open(filename)
-        lines = f.readlines()
-        f.close()
-    except IOError:
-        return 1                       # Oh well
-
-    fre = re.compile(r'\s*def\s+(t_[a-zA-Z_0-9]*)\(')
-    sre = re.compile(r'\s*(t_[a-zA-Z_0-9]*)\s*=')
-    counthash = { }
-    linen = 1
-    noerror = 1
-    for l in lines:
-        m = fre.match(l)
-        if not m:
-            m = sre.match(l)
-        if m:
-            name = m.group(1)
-            prev = counthash.get(name)
-            if not prev:
-                counthash[name] = linen
-            else:
-                print "%s:%d: Rule %s redefined. Previously defined on line %d" % (filename,linen,name,prev)
-                noerror = 0
-        linen += 1
-    return noerror
-
-# -----------------------------------------------------------------------------
-# _funcs_to_names()
-#
-# Given a list of regular expression functions, this converts it to a list
-# suitable for output to a table file
-# -----------------------------------------------------------------------------
-
-def _funcs_to_names(funclist):
-    result = []
-    for f in funclist:
-         if f and f[0]:
-             result.append((f[0].__name__,f[1]))
-         else:
-             result.append(f)
-    return result
-
-# -----------------------------------------------------------------------------
-# _names_to_funcs()
-#
-# Given a list of regular expression function names, this converts it back to
-# functions.
-# -----------------------------------------------------------------------------
-
-def _names_to_funcs(namelist,fdict):
-     result = []
-     for n in namelist:
-          if n and n[0]:
-              result.append((fdict[n[0]],n[1]))
-          else:
-              result.append(n)
-     return result
-
-# -----------------------------------------------------------------------------
-# _form_master_re()
-#
-# This function takes a list of all of the regex components and attempts to
-# form the master regular expression.  Given limitations in the Python re
-# module, it may be necessary to break the master regex into separate expressions.
-# -----------------------------------------------------------------------------
-
-def _form_master_re(relist,reflags,ldict):
-    if not relist: return []
-    regex = "|".join(relist)
-    try:
-        lexre = re.compile(regex,re.VERBOSE | reflags)
-
-        # Build the index to function map for the matching engine
-        lexindexfunc = [ None ] * (max(lexre.groupindex.values())+1)
-        for f,i in lexre.groupindex.items():
-            handle = ldict.get(f,None)
-            if type(handle) in (types.FunctionType, types.MethodType):
-                lexindexfunc[i] = (handle,handle.__name__[2:])
-            elif handle is not None:
-                # If rule was specified as a string, we build an anonymous
-                # callback function to carry out the action
-                if f.find("ignore_") > 0:
-                    lexindexfunc[i] = (None,None)
-                    print "IGNORE", f
-                else:
-                    lexindexfunc[i] = (None, f[2:])
-         
-        return [(lexre,lexindexfunc)],[regex]
-    except Exception,e:
-        m = int(len(relist)/2)
-        if m == 0: m = 1
-        llist, lre = _form_master_re(relist[:m],reflags,ldict)
-        rlist, rre = _form_master_re(relist[m:],reflags,ldict)
-        return llist+rlist, lre+rre
-
-# -----------------------------------------------------------------------------
-# def _statetoken(s,names)
-#
-# Given a declaration name s of the form "t_" and a dictionary whose keys are
-# state names, this function returns a tuple (states,tokenname) where states
-# is a tuple of state names and tokenname is the name of the token.  For example,
-# calling this with s = "t_foo_bar_SPAM" might return (('foo','bar'),'SPAM')
-# -----------------------------------------------------------------------------
-
-def _statetoken(s,names):
-    nonstate = 1
-    parts = s.split("_")
-    for i in range(1,len(parts)):
-         if not names.has_key(parts[i]) and parts[i] != 'ANY': break
-    if i > 1:
-       states = tuple(parts[1:i])
-    else:
-       states = ('INITIAL',)
-
-    if 'ANY' in states:
-       states = tuple(names.keys())
-      
-    tokenname = "_".join(parts[i:])
-    return (states,tokenname)
-
-# -----------------------------------------------------------------------------
-# lex(module)
-#
-# Build all of the regular expression rules from definitions in the supplied module
-# -----------------------------------------------------------------------------
-def lex(module=None,object=None,debug=0,optimize=0,lextab="lextab",reflags=0,nowarn=0):
-    global lexer
-    ldict = None
-    stateinfo  = { 'INITIAL' : 'inclusive'}
-    error = 0
-    files = { }
-    lexobj = Lexer()
-    lexobj.lexdebug = debug
-    lexobj.lexoptimize = optimize
-    global token,input
-
-    if nowarn: warn = 0
-    else: warn = 1
-    
-    if object: module = object
-
-    if module:
-        # User supplied a module object.
-        if isinstance(module, types.ModuleType):
-            ldict = module.__dict__
-        elif isinstance(module, _INSTANCETYPE):
-            _items = [(k,getattr(module,k)) for k in dir(module)]
-            ldict = { }
-            for (i,v) in _items:
-                ldict[i] = v
-        else:
-            raise ValueError,"Expected a module or instance"
-        lexobj.lexmodule = module
-        
-    else:
-        # No module given.  We might be able to get information from the caller.
-        try:
-            raise RuntimeError
-        except RuntimeError:
-            e,b,t = sys.exc_info()
-            f = t.tb_frame
-            f = f.f_back           # Walk out to our calling function
-            ldict = f.f_globals    # Grab its globals dictionary
-
-    if optimize and lextab:
-        try:
-            lexobj.readtab(lextab,ldict)
-            token = lexobj.token
-            input = lexobj.input
-            lexer = lexobj
-            return lexobj
-        
-        except ImportError:
-            pass
-        
-    # Get the tokens, states, and literals variables (if any)
-    if (module and isinstance(module,_INSTANCETYPE)):
-        tokens   = getattr(module,"tokens",None)
-        states   = getattr(module,"states",None)
-        literals = getattr(module,"literals","")
-    else:
-        tokens   = ldict.get("tokens",None)
-        states   = ldict.get("states",None)
-        literals = ldict.get("literals","")
-        
-    if not tokens:
-        raise SyntaxError,"lex: module does not define 'tokens'"
-    if not (isinstance(tokens,types.ListType) or isinstance(tokens,types.TupleType)):
-        raise SyntaxError,"lex: tokens must be a list or tuple."
-
-    # Build a dictionary of valid token names
-    lexobj.lextokens = { }
-    if not optimize:
-        for n in tokens:
-            if not _is_identifier.match(n):
-                print "lex: Bad token name '%s'" % n
-                error = 1
-            if warn and lexobj.lextokens.has_key(n):
-                print "lex: Warning. Token '%s' multiply defined." % n
-            lexobj.lextokens[n] = None
-    else:
-        for n in tokens: lexobj.lextokens[n] = None
-
-    if debug:
-        print "lex: tokens = '%s'" % lexobj.lextokens.keys()
-
-    try:
-         for c in literals:
-               if not (isinstance(c,types.StringType) or isinstance(c,types.UnicodeType)) or len(c) > 1:
-                    print "lex: Invalid literal %s. Must be a single character" % repr(c)
-                    error = 1
-                    continue
-
-    except TypeError:
-         print "lex: Invalid literals specification. literals must be a sequence of characters."
-         error = 1
-
-    lexobj.lexliterals = literals
-
-    # Build statemap
-    if states:
-         if not (isinstance(states,types.TupleType) or isinstance(states,types.ListType)):
-              print "lex: states must be defined as a tuple or list."
-              error = 1
-         else:
-              for s in states:
-                    if not isinstance(s,types.TupleType) or len(s) != 2:
-                           print "lex: invalid state specifier %s. Must be a tuple (statename,'exclusive|inclusive')" % repr(s)
-                           error = 1
-                           continue
-                    name, statetype = s
-                    if not isinstance(name,types.StringType):
-                           print "lex: state name %s must be a string" % repr(name)
-                           error = 1
-                           continue
-                    if not (statetype == 'inclusive' or statetype == 'exclusive'):
-                           print "lex: state type for state %s must be 'inclusive' or 'exclusive'" % name
-                           error = 1
-                           continue
-                    if stateinfo.has_key(name):
-                           print "lex: state '%s' already defined." % name
-                           error = 1
-                           continue
-                    stateinfo[name] = statetype
-
-    # Get a list of symbols with the t_ or s_ prefix
-    tsymbols = [f for f in ldict.keys() if f[:2] == 't_' ]
-
-    # Now build up a list of functions and a list of strings
-
-    funcsym =  { }        # Symbols defined as functions
-    strsym =   { }        # Symbols defined as strings
-    toknames = { }        # Mapping of symbols to token names
-
-    for s in stateinfo.keys():
-         funcsym[s] = []
-         strsym[s] = []
-
-    ignore   = { }        # Ignore strings by state
-    errorf   = { }        # Error functions by state
-
-    if len(tsymbols) == 0:
-        raise SyntaxError,"lex: no rules of the form t_rulename are defined."
-
-    for f in tsymbols:
-        t = ldict[f]
-        states, tokname = _statetoken(f,stateinfo)
-        toknames[f] = tokname
-
-        if callable(t):
-            for s in states: funcsym[s].append((f,t))
-        elif (isinstance(t, types.StringType) or isinstance(t,types.UnicodeType)):
-            for s in states: strsym[s].append((f,t))
-        else:
-            print "lex: %s not defined as a function or string" % f
-            error = 1
-
-    # Sort the functions by line number
-    for f in funcsym.values():
-        f.sort(lambda x,y: cmp(x[1].func_code.co_firstlineno,y[1].func_code.co_firstlineno))
-
-    # Sort the strings by regular expression length
-    for s in strsym.values():
-        s.sort(lambda x,y: (len(x[1]) < len(y[1])) - (len(x[1]) > len(y[1])))
-
-    regexs = { }
-
-    # Build the master regular expressions
-    for state in stateinfo.keys():
-        regex_list = []
-
-        # Add rules defined by functions first
-        for fname, f in funcsym[state]:
-            line = f.func_code.co_firstlineno
-            file = f.func_code.co_filename
-            files[file] = None
-            tokname = toknames[fname]
-
-            ismethod = isinstance(f, types.MethodType)
-
-            if not optimize:
-                nargs = f.func_code.co_argcount
-                if ismethod:
-                    reqargs = 2
-                else:
-                    reqargs = 1
-                if nargs > reqargs:
-                    print "%s:%d: Rule '%s' has too many arguments." % (file,line,f.__name__)
-                    error = 1
-                    continue
-
-                if nargs < reqargs:
-                    print "%s:%d: Rule '%s' requires an argument." % (file,line,f.__name__)
-                    error = 1
-                    continue
-
-                if tokname == 'ignore':
-                    print "%s:%d: Rule '%s' must be defined as a string." % (file,line,f.__name__)
-                    error = 1
-                    continue
-        
-            if tokname == 'error':
-                errorf[state] = f
-                continue
-
-            if f.__doc__:
-                if not optimize:
-                    try:
-                        c = re.compile("(?P<%s>%s)" % (f.__name__,f.__doc__), re.VERBOSE | reflags)
-                        if c.match(""):
-                             print "%s:%d: Regular expression for rule '%s' matches empty string." % (file,line,f.__name__)
-                             error = 1
-                             continue
-                    except re.error,e:
-                        print "%s:%d: Invalid regular expression for rule '%s'. %s" % (file,line,f.__name__,e)
-                        if '#' in f.__doc__:
-                             print "%s:%d. Make sure '#' in rule '%s' is escaped with '\\#'." % (file,line, f.__name__)                 
-                        error = 1
-                        continue
-
-                    if debug:
-                        print "lex: Adding rule %s -> '%s' (state '%s')" % (f.__name__,f.__doc__, state)
-
-                # Okay. The regular expression seemed okay.  Let's append it to the master regular
-                # expression we're building
-  
-                regex_list.append("(?P<%s>%s)" % (f.__name__,f.__doc__))
-            else:
-                print "%s:%d: No regular expression defined for rule '%s'" % (file,line,f.__name__)
-
-        # Now add all of the simple rules
-        for name,r in strsym[state]:
-            tokname = toknames[name]       
-
-            if tokname == 'ignore':
-                 ignore[state] = r
-                 continue
-
-            if not optimize:
-                if tokname == 'error':
-                    raise SyntaxError,"lex: Rule '%s' must be defined as a function" % name
-                    error = 1
-                    continue
-        
-                if not lexobj.lextokens.has_key(tokname) and tokname.find("ignore_") < 0:
-                    print "lex: Rule '%s' defined for an unspecified token %s." % (name,tokname)
-                    error = 1
-                    continue
-                try:
-                    c = re.compile("(?P<%s>%s)" % (name,r),re.VERBOSE | reflags)
-                    if (c.match("")):
-                         print "lex: Regular expression for rule '%s' matches empty string." % name
-                         error = 1
-                         continue
-                except re.error,e:
-                    print "lex: Invalid regular expression for rule '%s'. %s" % (name,e)
-                    if '#' in r:
-                         print "lex: Make sure '#' in rule '%s' is escaped with '\\#'." % name
-
-                    error = 1
-                    continue
-                if debug:
-                    print "lex: Adding rule %s -> '%s' (state '%s')" % (name,r,state)
-                
-            regex_list.append("(?P<%s>%s)" % (name,r))
-
-        if not regex_list:
-             print "lex: No rules defined for state '%s'" % state
-             error = 1
-
-        regexs[state] = regex_list
-
-
-    if not optimize:
-        for f in files.keys(): 
-           if not _validate_file(f):
-                error = 1
-
-    if error:
-        raise SyntaxError,"lex: Unable to build lexer."
-
-    # From this point forward, we're reasonably confident that we can build the lexer.
-    # No more errors will be generated, but there might be some warning messages.
-
-    # Build the master regular expressions
-
-    for state in regexs.keys():
-        lexre, re_text = _form_master_re(regexs[state],reflags,ldict)
-        lexobj.lexstatere[state] = lexre
-        lexobj.lexstateretext[state] = re_text
-        if debug:
-            for i in range(len(re_text)):
-                 print "lex: state '%s'. regex[%d] = '%s'" % (state, i, re_text[i])
-
-    # For inclusive states, we need to add the INITIAL state
-    for state,type in stateinfo.items():
-        if state != "INITIAL" and type == 'inclusive':
-             lexobj.lexstatere[state].extend(lexobj.lexstatere['INITIAL'])
-             lexobj.lexstateretext[state].extend(lexobj.lexstateretext['INITIAL'])
-
-    lexobj.lexstateinfo = stateinfo
-    lexobj.lexre = lexobj.lexstatere["INITIAL"]
-    lexobj.lexretext = lexobj.lexstateretext["INITIAL"]
-
-    # Set up ignore variables
-    lexobj.lexstateignore = ignore
-    lexobj.lexignore = lexobj.lexstateignore.get("INITIAL","")
-
-    # Set up error functions
-    lexobj.lexstateerrorf = errorf
-    lexobj.lexerrorf = errorf.get("INITIAL",None)
-    if warn and not lexobj.lexerrorf:
-        print "lex: Warning. no t_error rule is defined."
-
-    # Check state information for ignore and error rules
-    for s,stype in stateinfo.items():
-        if stype == 'exclusive':
-              if warn and not errorf.has_key(s):
-                   print "lex: Warning. no error rule is defined for exclusive state '%s'" % s
-              if warn and not ignore.has_key(s) and lexobj.lexignore:
-                   print "lex: Warning. no ignore rule is defined for exclusive state '%s'" % s
-        elif stype == 'inclusive':
-              if not errorf.has_key(s):
-                   errorf[s] = errorf.get("INITIAL",None)
-              if not ignore.has_key(s):
-                   ignore[s] = ignore.get("INITIAL","")
-   
-
-    # Create global versions of the token() and input() functions
-    token = lexobj.token
-    input = lexobj.input
-    lexer = lexobj
-
-    # If in optimize mode, we write the lextab   
-    if lextab and optimize:
-        lexobj.writetab(lextab)
-
-    return lexobj
-
-# -----------------------------------------------------------------------------
-# runmain()
-#
-# This runs the lexer as a main program
-# -----------------------------------------------------------------------------
-
-def runmain(lexer=None,data=None):
-    if not data:
-        try:
-            filename = sys.argv[1]
-            f = open(filename)
-            data = f.read()
-            f.close()
-        except IndexError:
-            print "Reading from standard input (type EOF to end):"
-            data = sys.stdin.read()
-
-    if lexer:
-        _input = lexer.input
-    else:
-        _input = input
-    _input(data)
-    if lexer:
-        _token = lexer.token
-    else:
-        _token = token
-        
-    while 1:
-        tok = _token()
-        if not tok: break
-        print "(%s,%r,%d,%d)" % (tok.type, tok.value, tok.lineno,tok.lexpos)
-        
-
-# -----------------------------------------------------------------------------
-# @TOKEN(regex)
-#
-# This decorator function can be used to set the regex expression on a function
-# when its docstring might need to be set in an alternative way
-# -----------------------------------------------------------------------------
-
-def TOKEN(r):
-    def set_doc(f):
-        f.__doc__ = r
-        return f
-    return set_doc
-
-# Alternative spelling of the TOKEN decorator
-Token = TOKEN
-
diff --git a/chall/ply-2.2/ply/lex.pyc b/chall/ply-2.2/ply/lex.pyc
deleted file mode 100644
index 19af7ed..0000000
Binary files a/chall/ply-2.2/ply/lex.pyc and /dev/null differ
diff --git a/chall/ply-2.2/ply/yacc.py b/chall/ply-2.2/ply/yacc.py
deleted file mode 100644
index caf98af..0000000
--- a/chall/ply-2.2/ply/yacc.py
+++ /dev/null
@@ -1,2209 +0,0 @@
-#-----------------------------------------------------------------------------
-# ply: yacc.py
-#
-# Author(s): David M. Beazley (dave@dabeaz.com)
-#
-# Copyright (C) 2001-2006, David M. Beazley
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public
-# License as published by the Free Software Foundation; either
-# version 2.1 of the License, or (at your option) any later version.
-# 
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Lesser General Public License for more details.
-# 
-# You should have received a copy of the GNU Lesser General Public
-# License along with this library; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-# 
-# See the file COPYING for a complete copy of the LGPL.
-#
-#
-# This implements an LR parser that is constructed from grammar rules defined
-# as Python functions. The grammer is specified by supplying the BNF inside
-# Python documentation strings.  The inspiration for this technique was borrowed
-# from John Aycock's Spark parsing system.  PLY might be viewed as cross between
-# Spark and the GNU bison utility.
-#
-# The current implementation is only somewhat object-oriented. The
-# LR parser itself is defined in terms of an object (which allows multiple
-# parsers to co-exist).  However, most of the variables used during table
-# construction are defined in terms of global variables.  Users shouldn't
-# notice unless they are trying to define multiple parsers at the same
-# time using threads (in which case they should have their head examined).
-#
-# This implementation supports both SLR and LALR(1) parsing.  LALR(1)
-# support was originally implemented by Elias Ioup (ezioup@alumni.uchicago.edu),
-# using the algorithm found in Aho, Sethi, and Ullman "Compilers: Principles,
-# Techniques, and Tools" (The Dragon Book).  LALR(1) has since been replaced
-# by the more efficient DeRemer and Pennello algorithm.
-#
-# :::::::: WARNING :::::::
-#
-# Construction of LR parsing tables is fairly complicated and expensive.
-# To make this module run fast, a *LOT* of work has been put into
-# optimization---often at the expensive of readability and what might
-# consider to be good Python "coding style."   Modify the code at your
-# own risk!
-# ----------------------------------------------------------------------------
-
-__version__ = "2.2"
-
-#-----------------------------------------------------------------------------
-#                     === User configurable parameters ===
-#
-# Change these to modify the default behavior of yacc (if you wish)
-#-----------------------------------------------------------------------------
-
-yaccdebug   = 1                # Debugging mode.  If set, yacc generates a
-                               # a 'parser.out' file in the current directory
-
-debug_file  = 'parser.out'     # Default name of the debugging file
-tab_module  = 'parsetab'       # Default name of the table module
-default_lr  = 'LALR'           # Default LR table generation method
-
-error_count = 3                # Number of symbols that must be shifted to leave recovery mode
-
-import re, types, sys, cStringIO, md5, os.path
-
-# Exception raised for yacc-related errors
-class YaccError(Exception):   pass
-
-#-----------------------------------------------------------------------------
-#                        ===  LR Parsing Engine ===
-#
-# The following classes are used for the LR parser itself.  These are not
-# used during table construction and are independent of the actual LR
-# table generation algorithm
-#-----------------------------------------------------------------------------
-
-# This class is used to hold non-terminal grammar symbols during parsing.
-# It normally has the following attributes set:
-#        .type       = Grammar symbol type
-#        .value      = Symbol value
-#        .lineno     = Starting line number
-#        .endlineno  = Ending line number (optional, set automatically)
-#        .lexpos     = Starting lex position
-#        .endlexpos  = Ending lex position (optional, set automatically)
-
-class YaccSymbol:
-    def __str__(self):    return self.type
-    def __repr__(self):   return str(self)
-
-# This class is a wrapper around the objects actually passed to each
-# grammar rule.   Index lookup and assignment actually assign the
-# .value attribute of the underlying YaccSymbol object.
-# The lineno() method returns the line number of a given
-# item (or 0 if not defined).   The linespan() method returns
-# a tuple of (startline,endline) representing the range of lines
-# for a symbol.  The lexspan() method returns a tuple (lexpos,endlexpos)
-# representing the range of positional information for a symbol.
-
-class YaccProduction:
-    def __init__(self,s,stack=None):
-        self.slice = s
-        self.pbstack = []
-        self.stack = stack
-
-    def __getitem__(self,n):
-        if type(n) == types.IntType:
-             if n >= 0: return self.slice[n].value
-             else: return self.stack[n].value
-        else:
-             return [s.value for s in self.slice[n.start:n.stop:n.step]]
-
-    def __setitem__(self,n,v):
-        self.slice[n].value = v
-
-    def __len__(self):
-        return len(self.slice)
-    
-    def lineno(self,n):
-        return getattr(self.slice[n],"lineno",0)
-
-    def linespan(self,n):
-        startline = getattr(self.slice[n],"lineno",0)
-        endline = getattr(self.slice[n],"endlineno",startline)
-        return startline,endline
-
-    def lexpos(self,n):
-        return getattr(self.slice[n],"lexpos",0)
-
-    def lexspan(self,n):
-        startpos = getattr(self.slice[n],"lexpos",0)
-        endpos = getattr(self.slice[n],"endlexpos",startpos)
-        return startpos,endpos
-
-    def pushback(self,n):
-        if n <= 0:
-            raise ValueError, "Expected a positive value"
-        if n > (len(self.slice)-1):
-            raise ValueError, "Can't push %d tokens. Only %d are available." % (n,len(self.slice)-1)
-        for i in range(0,n):
-            self.pbstack.append(self.slice[-i-1])
-
-# The LR Parsing engine.   This is defined as a class so that multiple parsers
-# can exist in the same process.  A user never instantiates this directly.
-# Instead, the global yacc() function should be used to create a suitable Parser
-# object. 
-
-class Parser:
-    def __init__(self,magic=None):
-
-        # This is a hack to keep users from trying to instantiate a Parser
-        # object directly.
-
-        if magic != "xyzzy":
-            raise YaccError, "Can't instantiate Parser. Use yacc() instead."
-
-        # Reset internal state
-        self.productions = None          # List of productions
-        self.errorfunc   = None          # Error handling function
-        self.action      = { }           # LR Action table
-        self.goto        = { }           # LR goto table
-        self.require     = { }           # Attribute require table
-        self.method      = "Unknown LR"  # Table construction method used
-
-    def errok(self):
-        self.errorcount = 0
-
-    def restart(self):
-        del self.statestack[:]
-        del self.symstack[:]
-        sym = YaccSymbol()
-        sym.type = '$end'
-        self.symstack.append(sym)
-        self.statestack.append(0)
-        
-    def parse(self,input=None,lexer=None,debug=0):
-        lookahead = None                 # Current lookahead symbol
-        lookaheadstack = [ ]             # Stack of lookahead symbols
-        actions = self.action            # Local reference to action table
-        goto    = self.goto              # Local reference to goto table
-        prod    = self.productions       # Local reference to production list
-        pslice  = YaccProduction(None)   # Production object passed to grammar rules
-        pslice.parser = self             # Parser object
-        self.errorcount = 0              # Used during error recovery
-
-        # If no lexer was given, we will try to use the lex module
-        if not lexer:
-            import lex
-            lexer = lex.lexer
-
-        pslice.lexer = lexer
-        
-        # If input was supplied, pass to lexer
-        if input:
-            lexer.input(input)
-
-        # Tokenize function
-        get_token = lexer.token
-
-        statestack = [ ]                # Stack of parsing states
-        self.statestack = statestack
-        symstack   = [ ]                # Stack of grammar symbols
-        self.symstack = symstack
-
-        pslice.stack = symstack         # Put in the production
-        errtoken   = None               # Err token
-
-        # The start state is assumed to be (0,$end)
-        statestack.append(0)
-        sym = YaccSymbol()
-        sym.type = '$end'
-        symstack.append(sym)
-        
-        while 1:
-            # Get the next symbol on the input.  If a lookahead symbol
-            # is already set, we just use that. Otherwise, we'll pull
-            # the next token off of the lookaheadstack or from the lexer
-            if debug > 1:
-                print 'state', statestack[-1]
-            if not lookahead:
-                if not lookaheadstack:
-                    lookahead = get_token()     # Get the next token
-                else:
-                    lookahead = lookaheadstack.pop()
-                if not lookahead:
-                    lookahead = YaccSymbol()
-                    lookahead.type = '$end'
-            if debug:
-                errorlead = ("%s . %s" % (" ".join([xx.type for xx in symstack][1:]), str(lookahead))).lstrip()
-
-            # Check the action table
-            s = statestack[-1]
-            ltype = lookahead.type
-            t = actions.get((s,ltype),None)
-
-            if debug > 1:
-                print 'action', t
-            if t is not None:
-                if t > 0:
-                    # shift a symbol on the stack
-                    if ltype == '$end':
-                        # Error, end of input
-                        sys.stderr.write("yacc: Parse error. EOF\n")
-                        return
-                    statestack.append(t)
-                    if debug > 1:
-                        sys.stderr.write("%-60s shift state %s\n" % (errorlead, t))
-                    symstack.append(lookahead)
-                    lookahead = None
-
-                    # Decrease error count on successful shift
-                    if self.errorcount > 0:
-                        self.errorcount -= 1
-                        
-                    continue
-                
-                if t < 0:
-                    # reduce a symbol on the stack, emit a production
-                    p = prod[-t]
-                    pname = p.name
-                    plen  = p.len
-
-                    # Get production function
-                    sym = YaccSymbol()
-                    sym.type = pname       # Production name
-                    sym.value = None
-                    if debug > 1:
-                        sys.stderr.write("%-60s reduce %d\n" % (errorlead, -t))
-
-                    if plen:
-                        targ = symstack[-plen-1:]
-                        targ[0] = sym
-                        try:
-                            sym.lineno = targ[1].lineno
-                            sym.endlineno = getattr(targ[-1],"endlineno",targ[-1].lineno)
-                            sym.lexpos = targ[1].lexpos
-                            sym.endlexpos = getattr(targ[-1],"endlexpos",targ[-1].lexpos)
-                        except AttributeError:
-                            sym.lineno = 0
-                        del symstack[-plen:]
-                        del statestack[-plen:]
-                    else:
-                        sym.lineno = 0
-                        targ = [ sym ]
-                    pslice.slice = targ
-                    pslice.pbstack = []
-                    # Call the grammar rule with our special slice object
-                    p.func(pslice)
-
-                    # If there was a pushback, put that on the stack
-                    if pslice.pbstack:
-                        lookaheadstack.append(lookahead)
-                        for _t in pslice.pbstack:
-                            lookaheadstack.append(_t)
-                        lookahead = None
-
-                    symstack.append(sym)
-                    statestack.append(goto[statestack[-1],pname])
-                    continue
-
-                if t == 0:
-                    n = symstack[-1]
-                    return getattr(n,"value",None)
-                    sys.stderr.write(errorlead, "\n")
-
-            if t == None:
-                if debug:
-                    sys.stderr.write(errorlead + "\n")
-                # We have some kind of parsing error here.  To handle
-                # this, we are going to push the current token onto
-                # the tokenstack and replace it with an 'error' token.
-                # If there are any synchronization rules, they may
-                # catch it.
-                #
-                # In addition to pushing the error token, we call call
-                # the user defined p_error() function if this is the
-                # first syntax error.  This function is only called if
-                # errorcount == 0.
-                if not self.errorcount:
-                    self.errorcount = error_count
-                    errtoken = lookahead
-                    if errtoken.type == '$end':
-                        errtoken = None               # End of file!
-                    if self.errorfunc:
-                        global errok,token,restart
-                        errok = self.errok        # Set some special functions available in error recovery
-                        token = get_token
-                        restart = self.restart
-                        tok = self.errorfunc(errtoken)
-                        del errok, token, restart   # Delete special functions
-                        
-                        if not self.errorcount:
-                            # User must have done some kind of panic
-                            # mode recovery on their own.  The
-                            # returned token is the next lookahead
-                            lookahead = tok
-                            errtoken = None
-                            continue
-                    else:
-                        if errtoken:
-                            if hasattr(errtoken,"lineno"): lineno = lookahead.lineno
-                            else: lineno = 0
-                            if lineno:
-                                sys.stderr.write("yacc: Syntax error at line %d, token=%s\n" % (lineno, errtoken.type))
-                            else:
-                                sys.stderr.write("yacc: Syntax error, token=%s" % errtoken.type)
-                        else:
-                            sys.stderr.write("yacc: Parse error in input. EOF\n")
-                            return
-
-                else:
-                    self.errorcount = error_count
-                
-                # case 1:  the statestack only has 1 entry on it.  If we're in this state, the
-                # entire parse has been rolled back and we're completely hosed.   The token is
-                # discarded and we just keep going.
-
-                if len(statestack) <= 1 and lookahead.type != '$end':
-                    lookahead = None
-                    errtoken = None
-                    # Nuke the pushback stack
-                    del lookaheadstack[:]
-                    continue
-
-                # case 2: the statestack has a couple of entries on it, but we're
-                # at the end of the file. nuke the top entry and generate an error token
-
-                # Start nuking entries on the stack
-                if lookahead.type == '$end':
-                    # Whoa. We're really hosed here. Bail out
-                    return 
-
-                if lookahead.type != 'error':
-                    sym = symstack[-1]
-                    if sym.type == 'error':
-                        # Hmmm. Error is on top of stack, we'll just nuke input
-                        # symbol and continue
-                        lookahead = None
-                        continue
-                    t = YaccSymbol()
-                    t.type = 'error'
-                    if hasattr(lookahead,"lineno"):
-                        t.lineno = lookahead.lineno
-                    t.value = lookahead
-                    lookaheadstack.append(lookahead)
-                    lookahead = t
-                else:
-                    symstack.pop()
-                    statestack.pop()
-
-                continue
-
-            # Call an error function here
-            raise RuntimeError, "yacc: internal parser error!!!\n"
-
-# -----------------------------------------------------------------------------
-#                          === Parser Construction ===
-#
-# The following functions and variables are used to implement the yacc() function
-# itself.   This is pretty hairy stuff involving lots of error checking,
-# construction of LR items, kernels, and so forth.   Although a lot of
-# this work is done using global variables, the resulting Parser object
-# is completely self contained--meaning that it is safe to repeatedly
-# call yacc() with different grammars in the same application.
-# -----------------------------------------------------------------------------
-        
-# -----------------------------------------------------------------------------
-# validate_file()
-#
-# This function checks to see if there are duplicated p_rulename() functions
-# in the parser module file.  Without this function, it is really easy for
-# users to make mistakes by cutting and pasting code fragments (and it's a real
-# bugger to try and figure out why the resulting parser doesn't work).  Therefore,
-# we just do a little regular expression pattern matching of def statements
-# to try and detect duplicates.
-# -----------------------------------------------------------------------------
-
-def validate_file(filename):
-    base,ext = os.path.splitext(filename)
-    if ext != '.py': return 1          # No idea. Assume it's okay.
-
-    try:
-        f = open(filename)
-        lines = f.readlines()
-        f.close()
-    except IOError:
-        return 1                       # Oh well
-
-    # Match def p_funcname(
-    fre = re.compile(r'\s*def\s+(p_[a-zA-Z_0-9]*)\(')
-    counthash = { }
-    linen = 1
-    noerror = 1
-    for l in lines:
-        m = fre.match(l)
-        if m:
-            name = m.group(1)
-            prev = counthash.get(name)
-            if not prev:
-                counthash[name] = linen
-            else:
-                sys.stderr.write("%s:%d: Function %s redefined. Previously defined on line %d\n" % (filename,linen,name,prev))
-                noerror = 0
-        linen += 1
-    return noerror
-
-# This function looks for functions that might be grammar rules, but which don't have the proper p_suffix.
-def validate_dict(d):
-    for n,v in d.items(): 
-        if n[0:2] == 'p_' and type(v) in (types.FunctionType, types.MethodType): continue
-        if n[0:2] == 't_': continue
-
-        if n[0:2] == 'p_':
-            sys.stderr.write("yacc: Warning. '%s' not defined as a function\n" % n)
-        if 1 and isinstance(v,types.FunctionType) and v.func_code.co_argcount == 1:
-            try:
-                doc = v.__doc__.split(" ")
-                if doc[1] == ':':
-                    sys.stderr.write("%s:%d: Warning. Possible grammar rule '%s' defined without p_ prefix.\n" % (v.func_code.co_filename, v.func_code.co_firstlineno,n))
-            except StandardError:
-                pass
-
-# -----------------------------------------------------------------------------
-#                           === GRAMMAR FUNCTIONS ===
-#
-# The following global variables and functions are used to store, manipulate,
-# and verify the grammar rules specified by the user.
-# -----------------------------------------------------------------------------
-
-# Initialize all of the global variables used during grammar construction
-def initialize_vars():
-    global Productions, Prodnames, Prodmap, Terminals 
-    global Nonterminals, First, Follow, Precedence, LRitems
-    global Errorfunc, Signature, Requires
-
-    Productions  = [None]  # A list of all of the productions.  The first
-                           # entry is always reserved for the purpose of
-                           # building an augmented grammar
-                        
-    Prodnames    = { }     # A dictionary mapping the names of nonterminals to a list of all
-                           # productions of that nonterminal.
-                        
-    Prodmap      = { }     # A dictionary that is only used to detect duplicate
-                           # productions.
-
-    Terminals    = { }     # A dictionary mapping the names of terminal symbols to a
-                           # list of the rules where they are used.
-
-    Nonterminals = { }     # A dictionary mapping names of nonterminals to a list
-                           # of rule numbers where they are used.
-
-    First        = { }     # A dictionary of precomputed FIRST(x) symbols
-    
-    Follow       = { }     # A dictionary of precomputed FOLLOW(x) symbols
-
-    Precedence   = { }     # Precedence rules for each terminal. Contains tuples of the
-                           # form ('right',level) or ('nonassoc', level) or ('left',level)
-
-    LRitems      = [ ]     # A list of all LR items for the grammar.  These are the
-                           # productions with the "dot" like E -> E . PLUS E
-
-    Errorfunc    = None    # User defined error handler
-
-    Signature    = md5.new()   # Digital signature of the grammar rules, precedence
-                               # and other information.  Used to determined when a
-                               # parsing table needs to be regenerated.
-
-    Requires     = { }     # Requires list
-
-    # File objects used when creating the parser.out debugging file
-    global _vf, _vfc
-    _vf           = cStringIO.StringIO()
-    _vfc          = cStringIO.StringIO()
-
-# -----------------------------------------------------------------------------
-# class Production:
-#
-# This class stores the raw information about a single production or grammar rule.
-# It has a few required attributes:
-#
-#       name     - Name of the production (nonterminal)
-#       prod     - A list of symbols making up its production
-#       number   - Production number.
-#
-# In addition, a few additional attributes are used to help with debugging or
-# optimization of table generation.
-#
-#       file     - File where production action is defined.
-#       lineno   - Line number where action is defined
-#       func     - Action function
-#       prec     - Precedence level
-#       lr_next  - Next LR item. Example, if we are ' E -> E . PLUS E'
-#                  then lr_next refers to 'E -> E PLUS . E'   
-#       lr_index - LR item index (location of the ".") in the prod list.
-#       lookaheads - LALR lookahead symbols for this item
-#       len      - Length of the production (number of symbols on right hand side)
-# -----------------------------------------------------------------------------
-
-class Production:
-    def __init__(self,**kw):
-        for k,v in kw.items():
-            setattr(self,k,v)
-        self.lr_index = -1
-        self.lr0_added = 0    # Flag indicating whether or not added to LR0 closure
-        self.lr1_added = 0    # Flag indicating whether or not added to LR1
-        self.usyms = [ ]
-        self.lookaheads = { }
-        self.lk_added = { }
-        self.setnumbers = [ ]
-        
-    def __str__(self):
-        if self.prod:
-            s = "%s -> %s" % (self.name," ".join(self.prod))
-        else:
-            s = "%s -> <empty>" % self.name
-        return s
-
-    def __repr__(self):
-        return str(self)
-
-    # Compute lr_items from the production
-    def lr_item(self,n):
-        if n > len(self.prod): return None
-        p = Production()
-        p.name = self.name
-        p.prod = list(self.prod)
-        p.number = self.number
-        p.lr_index = n
-        p.lookaheads = { }
-        p.setnumbers = self.setnumbers
-        p.prod.insert(n,".")
-        p.prod = tuple(p.prod)
-        p.len = len(p.prod)
-        p.usyms = self.usyms
-
-        # Precompute list of productions immediately following
-        try:
-            p.lrafter = Prodnames[p.prod[n+1]]
-        except (IndexError,KeyError),e:
-            p.lrafter = []
-        try:
-            p.lrbefore = p.prod[n-1]
-        except IndexError:
-            p.lrbefore = None
-
-        return p
-
-class MiniProduction:
-    pass
-
-# regex matching identifiers
-_is_identifier = re.compile(r'^[a-zA-Z0-9_-]+$')
-
-# -----------------------------------------------------------------------------
-# add_production()
-#
-# Given an action function, this function assembles a production rule.
-# The production rule is assumed to be found in the function's docstring.
-# This rule has the general syntax:
-#
-#              name1 ::= production1
-#                     |  production2
-#                     |  production3
-#                    ...
-#                     |  productionn
-#              name2 ::= production1
-#                     |  production2
-#                    ... 
-# -----------------------------------------------------------------------------
-
-def add_production(f,file,line,prodname,syms):
-    
-    if Terminals.has_key(prodname):
-        sys.stderr.write("%s:%d: Illegal rule name '%s'. Already defined as a token.\n" % (file,line,prodname))
-        return -1
-    if prodname == 'error':
-        sys.stderr.write("%s:%d: Illegal rule name '%s'. error is a reserved word.\n" % (file,line,prodname))
-        return -1
-                
-    if not _is_identifier.match(prodname):
-        sys.stderr.write("%s:%d: Illegal rule name '%s'\n" % (file,line,prodname))
-        return -1
-
-    for x in range(len(syms)):
-        s = syms[x]
-        if s[0] in "'\"":
-             try:
-                 c = eval(s)
-                 if (len(c) > 1):
-                      sys.stderr.write("%s:%d: Literal token %s in rule '%s' may only be a single character\n" % (file,line,s, prodname)) 
-                      return -1
-                 if not Terminals.has_key(c):
-                      Terminals[c] = []
-                 syms[x] = c
-                 continue
-             except SyntaxError:
-                 pass
-        if not _is_identifier.match(s) and s != '%prec':
-            sys.stderr.write("%s:%d: Illegal name '%s' in rule '%s'\n" % (file,line,s, prodname))
-            return -1
-
-    # See if the rule is already in the rulemap
-    map = "%s -> %s" % (prodname,syms)
-    if Prodmap.has_key(map):
-        m = Prodmap[map]
-        sys.stderr.write("%s:%d: Duplicate rule %s.\n" % (file,line, m))
-        sys.stderr.write("%s:%d: Previous definition at %s:%d\n" % (file,line, m.file, m.line))
-        return -1
-
-    p = Production()
-    p.name = prodname
-    p.prod = syms
-    p.file = file
-    p.line = line
-    p.func = f
-    p.number = len(Productions)
-
-            
-    Productions.append(p)
-    Prodmap[map] = p
-    if not Nonterminals.has_key(prodname):
-        Nonterminals[prodname] = [ ]
-    
-    # Add all terminals to Terminals
-    i = 0
-    while i < len(p.prod):
-        t = p.prod[i]
-        if t == '%prec':
-            try:
-                precname = p.prod[i+1]
-            except IndexError:
-                sys.stderr.write("%s:%d: Syntax error. Nothing follows %%prec.\n" % (p.file,p.line))
-                return -1
-
-            prec = Precedence.get(precname,None)
-            if not prec:
-                sys.stderr.write("%s:%d: Nothing known about the precedence of '%s'\n" % (p.file,p.line,precname))
-                return -1
-            else:
-                p.prec = prec
-            del p.prod[i]
-            del p.prod[i]
-            continue
-
-        if Terminals.has_key(t):
-            Terminals[t].append(p.number)
-            # Is a terminal.  We'll assign a precedence to p based on this
-            if not hasattr(p,"prec"):
-                p.prec = Precedence.get(t,('right',0))
-        else:
-            if not Nonterminals.has_key(t):
-                Nonterminals[t] = [ ]
-            Nonterminals[t].append(p.number)
-        i += 1
-
-    if not hasattr(p,"prec"):
-        p.prec = ('right',0)
-        
-    # Set final length of productions
-    p.len  = len(p.prod)
-    p.prod = tuple(p.prod)
-
-    # Calculate unique syms in the production
-    p.usyms = [ ]
-    for s in p.prod:
-        if s not in p.usyms:
-            p.usyms.append(s)
-    
-    # Add to the global productions list
-    try:
-        Prodnames[p.name].append(p)
-    except KeyError:
-        Prodnames[p.name] = [ p ]
-    return 0
-
-# Given a raw rule function, this function rips out its doc string
-# and adds rules to the grammar
-
-def add_function(f):
-    line = f.func_code.co_firstlineno
-    file = f.func_code.co_filename
-    error = 0
-
-    if isinstance(f,types.MethodType):
-        reqdargs = 2
-    else:
-        reqdargs = 1
-        
-    if f.func_code.co_argcount > reqdargs:
-        sys.stderr.write("%s:%d: Rule '%s' has too many arguments.\n" % (file,line,f.__name__))
-        return -1
-
-    if f.func_code.co_argcount < reqdargs:
-        sys.stderr.write("%s:%d: Rule '%s' requires an argument.\n" % (file,line,f.__name__))
-        return -1
-          
-    if f.__doc__:
-        # Split the doc string into lines
-        pstrings = f.__doc__.splitlines()
-        lastp = None
-        dline = line
-        for ps in pstrings:
-            dline += 1
-            p = ps.split()
-            if not p: continue
-            try:
-                if p[0] == '|':
-                    # This is a continuation of a previous rule
-                    if not lastp:
-                        sys.stderr.write("%s:%d: Misplaced '|'.\n" % (file,dline))
-                        return -1
-                    prodname = lastp
-                    if len(p) > 1:
-                        syms = p[1:]
-                    else:
-                        syms = [ ]
-                else:
-                    prodname = p[0]
-                    lastp = prodname
-                    assign = p[1]
-                    if len(p) > 2:
-                        syms = p[2:]
-                    else:
-                        syms = [ ]
-                    if assign != ':' and assign != '::=':
-                        sys.stderr.write("%s:%d: Syntax error. Expected ':'\n" % (file,dline))
-                        return -1
-                         
- 
-                e = add_production(f,file,dline,prodname,syms)
-                error += e
-
-                
-            except StandardError:
-                sys.stderr.write("%s:%d: Syntax error in rule '%s'\n" % (file,dline,ps))
-                error -= 1
-    else:
-        sys.stderr.write("%s:%d: No documentation string specified in function '%s'\n" % (file,line,f.__name__))
-    return error
-
-
-# Cycle checking code (Michael Dyck)
-
-def compute_reachable():
-    '''
-    Find each symbol that can be reached from the start symbol.
-    Print a warning for any nonterminals that can't be reached.
-    (Unused terminals have already had their warning.)
-    '''
-    Reachable = { }
-    for s in Terminals.keys() + Nonterminals.keys():
-        Reachable[s] = 0
-
-    mark_reachable_from( Productions[0].prod[0], Reachable )
-
-    for s in Nonterminals.keys():
-        if not Reachable[s]:
-            sys.stderr.write("yacc: Symbol '%s' is unreachable.\n" % s)
-
-def mark_reachable_from(s, Reachable):
-    '''
-    Mark all symbols that are reachable from symbol s.
-    '''
-    if Reachable[s]:
-        # We've already reached symbol s.
-        return
-    Reachable[s] = 1
-    for p in Prodnames.get(s,[]):
-        for r in p.prod:
-            mark_reachable_from(r, Reachable)
-
-# -----------------------------------------------------------------------------
-# compute_terminates()
-#
-# This function looks at the various parsing rules and tries to detect
-# infinite recursion cycles (grammar rules where there is no possible way
-# to derive a string of only terminals).
-# -----------------------------------------------------------------------------
-def compute_terminates():
-    '''
-    Raise an error for any symbols that don't terminate.
-    '''
-    Terminates = {}
-
-    # Terminals:
-    for t in Terminals.keys():
-        Terminates[t] = 1
-
-    Terminates['$end'] = 1
-
-    # Nonterminals:
-
-    # Initialize to false:
-    for n in Nonterminals.keys():
-        Terminates[n] = 0
-
-    # Then propagate termination until no change:
-    while 1:
-        some_change = 0
-        for (n,pl) in Prodnames.items():
-            # Nonterminal n terminates iff any of its productions terminates.
-            for p in pl:
-                # Production p terminates iff all of its rhs symbols terminate.
-                for s in p.prod:
-                    if not Terminates[s]:
-                        # The symbol s does not terminate,
-                        # so production p does not terminate.
-                        p_terminates = 0
-                        break
-                else:
-                    # didn't break from the loop,
-                    # so every symbol s terminates
-                    # so production p terminates.
-                    p_terminates = 1
-
-                if p_terminates:
-                    # symbol n terminates!
-                    if not Terminates[n]:
-                        Terminates[n] = 1
-                        some_change = 1
-                    # Don't need to consider any more productions for this n.
-                    break
-
-        if not some_change:
-            break
-
-    some_error = 0
-    for (s,terminates) in Terminates.items():
-        if not terminates:
-            if not Prodnames.has_key(s) and not Terminals.has_key(s) and s != 'error':
-                # s is used-but-not-defined, and we've already warned of that,
-                # so it would be overkill to say that it's also non-terminating.
-                pass
-            else:
-                sys.stderr.write("yacc: Infinite recursion detected for symbol '%s'.\n" % s)
-                some_error = 1
-
-    return some_error
-
-# -----------------------------------------------------------------------------
-# verify_productions()
-#
-# This function examines all of the supplied rules to see if they seem valid.
-# -----------------------------------------------------------------------------
-def verify_productions(cycle_check=1):
-    error = 0
-    for p in Productions:
-        if not p: continue
-
-        for s in p.prod:
-            if not Prodnames.has_key(s) and not Terminals.has_key(s) and s != 'error':
-                sys.stderr.write("%s:%d: Symbol '%s' used, but not defined as a token or a rule.\n" % (p.file,p.line,s))
-                error = 1
-                continue
-
-    unused_tok = 0 
-    # Now verify all of the tokens
-    if yaccdebug:
-        _vf.write("Unused terminals:\n\n")
-    for s,v in Terminals.items():
-        if s != 'error' and not v:
-            sys.stderr.write("yacc: Warning. Token '%s' defined, but not used.\n" % s)
-            if yaccdebug: _vf.write("   %s\n"% s)
-            unused_tok += 1
-
-    # Print out all of the productions
-    if yaccdebug:
-        _vf.write("\nGrammar\n\n")
-        for i in range(1,len(Productions)):
-            _vf.write("Rule %-5d %s\n" % (i, Productions[i]))
-        
-    unused_prod = 0
-    # Verify the use of all productions
-    for s,v in Nonterminals.items():
-        if not v:
-            p = Prodnames[s][0]
-            sys.stderr.write("%s:%d: Warning. Rule '%s' defined, but not used.\n" % (p.file,p.line, s))
-            unused_prod += 1
-
-    
-    if unused_tok == 1:
-        sys.stderr.write("yacc: Warning. There is 1 unused token.\n")
-    if unused_tok > 1:
-        sys.stderr.write("yacc: Warning. There are %d unused tokens.\n" % unused_tok)
-
-    if unused_prod == 1:
-        sys.stderr.write("yacc: Warning. There is 1 unused rule.\n")
-    if unused_prod > 1:
-        sys.stderr.write("yacc: Warning. There are %d unused rules.\n" % unused_prod)
-
-    if yaccdebug:
-        _vf.write("\nTerminals, with rules where they appear\n\n")
-        ks = Terminals.keys()
-        ks.sort()
-        for k in ks:
-            _vf.write("%-20s : %s\n" % (k, " ".join([str(s) for s in Terminals[k]])))
-        _vf.write("\nNonterminals, with rules where they appear\n\n")
-        ks = Nonterminals.keys()
-        ks.sort()
-        for k in ks:
-            _vf.write("%-20s : %s\n" % (k, " ".join([str(s) for s in Nonterminals[k]])))
-
-    if (cycle_check):
-        compute_reachable()
-        error += compute_terminates()
-#        error += check_cycles()
-    return error
-
-# -----------------------------------------------------------------------------
-# build_lritems()
-#
-# This function walks the list of productions and builds a complete set of the
-# LR items.  The LR items are stored in two ways:  First, they are uniquely
-# numbered and placed in the list _lritems.  Second, a linked list of LR items
-# is built for each production.  For example:
-#
-#   E -> E PLUS E
-#
-# Creates the list
-#
-#  [E -> . E PLUS E, E -> E . PLUS E, E -> E PLUS . E, E -> E PLUS E . ] 
-# -----------------------------------------------------------------------------
-
-def build_lritems():
-    for p in Productions:
-        lastlri = p
-        lri = p.lr_item(0)
-        i = 0
-        while 1:
-            lri = p.lr_item(i)
-            lastlri.lr_next = lri
-            if not lri: break
-            lri.lr_num = len(LRitems)
-            LRitems.append(lri)
-            lastlri = lri
-            i += 1
-
-    # In order for the rest of the parser generator to work, we need to
-    # guarantee that no more lritems are generated.  Therefore, we nuke
-    # the p.lr_item method.  (Only used in debugging)
-    # Production.lr_item = None
-
-# -----------------------------------------------------------------------------
-# add_precedence()
-#
-# Given a list of precedence rules, add to the precedence table.
-# -----------------------------------------------------------------------------
-
-def add_precedence(plist):
-    plevel = 0
-    error = 0
-    for p in plist:
-        plevel += 1
-        try:
-            prec = p[0]
-            terms = p[1:]
-            if prec != 'left' and prec != 'right' and prec != 'nonassoc':
-                sys.stderr.write("yacc: Invalid precedence '%s'\n" % prec)
-                return -1
-            for t in terms:
-                if Precedence.has_key(t):
-                    sys.stderr.write("yacc: Precedence already specified for terminal '%s'\n" % t)
-                    error += 1
-                    continue
-                Precedence[t] = (prec,plevel)
-        except:
-            sys.stderr.write("yacc: Invalid precedence table.\n")
-            error += 1
-
-    return error
-
-# -----------------------------------------------------------------------------
-# augment_grammar()
-#
-# Compute the augmented grammar.  This is just a rule S' -> start where start
-# is the starting symbol.
-# -----------------------------------------------------------------------------
-
-def augment_grammar(start=None):
-    if not start:
-        start = Productions[1].name
-    Productions[0] = Production(name="S'",prod=[start],number=0,len=1,prec=('right',0),func=None)
-    Productions[0].usyms = [ start ]
-    Nonterminals[start].append(0)
-
-
-# -------------------------------------------------------------------------
-# first()
-#
-# Compute the value of FIRST1(beta) where beta is a tuple of symbols.
-#
-# During execution of compute_first1, the result may be incomplete.
-# Afterward (e.g., when called from compute_follow()), it will be complete.
-# -------------------------------------------------------------------------
-def first(beta):
-
-    # We are computing First(x1,x2,x3,...,xn)
-    result = [ ]
-    for x in beta:
-        x_produces_empty = 0
-
-        # Add all the non-<empty> symbols of First[x] to the result.
-        for f in First[x]:
-            if f == '<empty>':
-                x_produces_empty = 1
-            else:
-                if f not in result: result.append(f)
-
-        if x_produces_empty:
-            # We have to consider the next x in beta,
-            # i.e. stay in the loop.
-            pass
-        else:
-            # We don't have to consider any further symbols in beta.
-            break
-    else:
-        # There was no 'break' from the loop,
-        # so x_produces_empty was true for all x in beta,
-        # so beta produces empty as well.
-        result.append('<empty>')
-
-    return result
-
-
-# FOLLOW(x)
-# Given a non-terminal.  This function computes the set of all symbols
-# that might follow it.  Dragon book, p. 189.
-
-def compute_follow(start=None):
-    # Add '$end' to the follow list of the start symbol
-    for k in Nonterminals.keys():
-        Follow[k] = [ ]
-
-    if not start:
-        start = Productions[1].name
-        
-    Follow[start] = [ '$end' ]
-        
-    while 1:
-        didadd = 0
-        for p in Productions[1:]:
-            # Here is the production set
-            for i in range(len(p.prod)):
-                B = p.prod[i]
-                if Nonterminals.has_key(B):
-                    # Okay. We got a non-terminal in a production
-                    fst = first(p.prod[i+1:])
-                    hasempty = 0
-                    for f in fst:
-                        if f != '<empty>' and f not in Follow[B]:
-                            Follow[B].append(f)
-                            didadd = 1
-                        if f == '<empty>':
-                            hasempty = 1
-                    if hasempty or i == (len(p.prod)-1):
-                        # Add elements of follow(a) to follow(b)
-                        for f in Follow[p.name]:
-                            if f not in Follow[B]:
-                                Follow[B].append(f)
-                                didadd = 1
-        if not didadd: break
-
-    if 0 and yaccdebug:
-        _vf.write('\nFollow:\n')
-        for k in Nonterminals.keys():
-            _vf.write("%-20s : %s\n" % (k, " ".join([str(s) for s in Follow[k]])))
-
-# -------------------------------------------------------------------------
-# compute_first1()
-#
-# Compute the value of FIRST1(X) for all symbols
-# -------------------------------------------------------------------------
-def compute_first1():
-
-    # Terminals:
-    for t in Terminals.keys():
-        First[t] = [t]
-
-    First['$end'] = ['$end']
-    First['#'] = ['#'] # what's this for?
-
-    # Nonterminals:
-
-    # Initialize to the empty set:
-    for n in Nonterminals.keys():
-        First[n] = []
-
-    # Then propagate symbols until no change:
-    while 1:
-        some_change = 0
-        for n in Nonterminals.keys():
-            for p in Prodnames[n]:
-                for f in first(p.prod):
-                    if f not in First[n]:
-                        First[n].append( f )
-                        some_change = 1
-        if not some_change:
-            break
-
-    if 0 and yaccdebug:
-        _vf.write('\nFirst:\n')
-        for k in Nonterminals.keys():
-            _vf.write("%-20s : %s\n" %
-                (k, " ".join([str(s) for s in First[k]])))
-
-# -----------------------------------------------------------------------------
-#                           === SLR Generation ===
-#
-# The following functions are used to construct SLR (Simple LR) parsing tables
-# as described on p.221-229 of the dragon book.
-# -----------------------------------------------------------------------------
-
-# Global variables for the LR parsing engine
-def lr_init_vars():
-    global _lr_action, _lr_goto, _lr_method
-    global _lr_goto_cache, _lr0_cidhash
-    
-    _lr_action       = { }        # Action table
-    _lr_goto         = { }        # Goto table
-    _lr_method       = "Unknown"  # LR method used
-    _lr_goto_cache   = { }
-    _lr0_cidhash     = { }
-
-
-# Compute the LR(0) closure operation on I, where I is a set of LR(0) items.
-# prodlist is a list of productions.
-
-_add_count = 0       # Counter used to detect cycles
-
-def lr0_closure(I):
-    global _add_count
-    
-    _add_count += 1
-    prodlist = Productions
-    
-    # Add everything in I to J        
-    J = I[:]
-    didadd = 1
-    while didadd:
-        didadd = 0
-        for j in J:
-            for x in j.lrafter:
-                if x.lr0_added == _add_count: continue
-                # Add B --> .G to J
-                J.append(x.lr_next)
-                x.lr0_added = _add_count
-                didadd = 1
-               
-    return J
-
-# Compute the LR(0) goto function goto(I,X) where I is a set
-# of LR(0) items and X is a grammar symbol.   This function is written
-# in a way that guarantees uniqueness of the generated goto sets
-# (i.e. the same goto set will never be returned as two different Python
-# objects).  With uniqueness, we can later do fast set comparisons using
-# id(obj) instead of element-wise comparison.
-
-def lr0_goto(I,x):
-    # First we look for a previously cached entry
-    g = _lr_goto_cache.get((id(I),x),None)
-    if g: return g
-
-    # Now we generate the goto set in a way that guarantees uniqueness
-    # of the result
-    
-    s = _lr_goto_cache.get(x,None)
-    if not s:
-        s = { }
-        _lr_goto_cache[x] = s
-
-    gs = [ ]
-    for p in I:
-        n = p.lr_next
-        if n and n.lrbefore == x:
-            s1 = s.get(id(n),None)
-            if not s1:
-                s1 = { }
-                s[id(n)] = s1
-            gs.append(n)
-            s = s1
-    g = s.get('$end',None)
-    if not g:
-        if gs:
-            g = lr0_closure(gs)
-            s['$end'] = g
-        else:
-            s['$end'] = gs
-    _lr_goto_cache[(id(I),x)] = g
-    return g
-
-_lr0_cidhash = { }
-
-# Compute the LR(0) sets of item function
-def lr0_items():
-    
-    C = [ lr0_closure([Productions[0].lr_next]) ]
-    i = 0
-    for I in C:
-        _lr0_cidhash[id(I)] = i
-        i += 1
-
-    # Loop over the items in C and each grammar symbols
-    i = 0
-    while i < len(C):
-        I = C[i]
-        i += 1
-
-        # Collect all of the symbols that could possibly be in the goto(I,X) sets
-        asyms = { }
-        for ii in I:
-            for s in ii.usyms:
-                asyms[s] = None
-
-        for x in asyms.keys():
-            g = lr0_goto(I,x)
-            if not g:  continue
-            if _lr0_cidhash.has_key(id(g)): continue
-            _lr0_cidhash[id(g)] = len(C)            
-            C.append(g)
-            
-    return C
-
-# -----------------------------------------------------------------------------
-#                       ==== LALR(1) Parsing ====
-#
-# LALR(1) parsing is almost exactly the same as SLR except that instead of
-# relying upon Follow() sets when performing reductions, a more selective
-# lookahead set that incorporates the state of the LR(0) machine is utilized.
-# Thus, we mainly just have to focus on calculating the lookahead sets.
-#
-# The method used here is due to DeRemer and Pennelo (1982).
-#
-# DeRemer, F. L., and T. J. Pennelo: "Efficient Computation of LALR(1)
-#     Lookahead Sets", ACM Transactions on Programming Languages and Systems,
-#     Vol. 4, No. 4, Oct. 1982, pp. 615-649
-#
-# Further details can also be found in:
-#
-#  J. Tremblay and P. Sorenson, "The Theory and Practice of Compiler Writing",
-#      McGraw-Hill Book Company, (1985).
-#
-# Note:  This implementation is a complete replacement of the LALR(1) 
-#        implementation in PLY-1.x releases.   That version was based on
-#        a less efficient algorithm and it had bugs in its implementation.
-# -----------------------------------------------------------------------------
-
-# -----------------------------------------------------------------------------
-# compute_nullable_nonterminals()
-#
-# Creates a dictionary containing all of the non-terminals that might produce
-# an empty production.   
-# -----------------------------------------------------------------------------
-
-def compute_nullable_nonterminals():
-    nullable = {}
-    num_nullable = 0
-    while 1:
-       for p in Productions[1:]:
-           if p.len == 0:
-                nullable[p.name] = 1
-                continue
-           for t in p.prod:
-                if not nullable.has_key(t): break
-           else:
-                nullable[p.name] = 1
-       if len(nullable) == num_nullable: break
-       num_nullable = len(nullable)
-    return nullable
-
-# -----------------------------------------------------------------------------
-# find_nonterminal_trans(C)
-#
-# Given a set of LR(0) items, this functions finds all of the non-terminal
-# transitions.    These are transitions in which a dot appears immediately before
-# a non-terminal.   Returns a list of tuples of the form (state,N) where state
-# is the state number and N is the nonterminal symbol.
-#
-# The input C is the set of LR(0) items.
-# -----------------------------------------------------------------------------
-
-def find_nonterminal_transitions(C):
-     trans = []
-     for state in range(len(C)):
-         for p in C[state]:
-             if p.lr_index < p.len - 1:
-                  t = (state,p.prod[p.lr_index+1])
-                  if Nonterminals.has_key(t[1]):
-                        if t not in trans: trans.append(t)
-         state = state + 1
-     return trans
-
-# -----------------------------------------------------------------------------
-# dr_relation()
-#
-# Computes the DR(p,A) relationships for non-terminal transitions.  The input
-# is a tuple (state,N) where state is a number and N is a nonterminal symbol.
-#
-# Returns a list of terminals.
-# -----------------------------------------------------------------------------
-
-def dr_relation(C,trans,nullable):
-    dr_set = { }
-    state,N = trans
-    terms = []
-
-    g = lr0_goto(C[state],N)
-    for p in g:
-       if p.lr_index < p.len - 1:
-           a = p.prod[p.lr_index+1]
-           if Terminals.has_key(a):
-               if a not in terms: terms.append(a)
-
-    # This extra bit is to handle the start state
-    if state == 0 and N == Productions[0].prod[0]:
-       terms.append('$end')
- 
-    return terms
-
-# -----------------------------------------------------------------------------
-# reads_relation()
-#
-# Computes the READS() relation (p,A) READS (t,C).
-# -----------------------------------------------------------------------------
-
-def reads_relation(C, trans, empty):
-    # Look for empty transitions
-    rel = []
-    state, N = trans
-
-    g = lr0_goto(C[state],N)
-    j = _lr0_cidhash.get(id(g),-1)
-    for p in g:
-        if p.lr_index < p.len - 1:
-             a = p.prod[p.lr_index + 1]
-             if empty.has_key(a):
-                  rel.append((j,a))
-
-    return rel
-
-# -----------------------------------------------------------------------------
-# compute_lookback_includes()
-#
-# Determines the lookback and includes relations
-#
-# LOOKBACK:
-# 
-# This relation is determined by running the LR(0) state machine forward.
-# For example, starting with a production "N : . A B C", we run it forward
-# to obtain "N : A B C ."   We then build a relationship between this final
-# state and the starting state.   These relationships are stored in a dictionary
-# lookdict.   
-#
-# INCLUDES:
-#
-# Computes the INCLUDE() relation (p,A) INCLUDES (p',B).   
-#
-# This relation is used to determine non-terminal transitions that occur
-# inside of other non-terminal transition states.   (p,A) INCLUDES (p', B)
-# if the following holds:
-#
-#       B -> LAT, where T -> epsilon and p' -L-> p 
-#
-# L is essentially a prefix (which may be empty), T is a suffix that must be
-# able to derive an empty string.  State p' must lead to state p with the string L.
-# 
-# -----------------------------------------------------------------------------
-
-def compute_lookback_includes(C,trans,nullable):
-    
-    lookdict = {}          # Dictionary of lookback relations
-    includedict = {}       # Dictionary of include relations
-
-    # Make a dictionary of non-terminal transitions
-    dtrans = {}
-    for t in trans:
-        dtrans[t] = 1
-    
-    # Loop over all transitions and compute lookbacks and includes
-    for state,N in trans:
-        lookb = []
-        includes = []
-        for p in C[state]:
-            if p.name != N: continue
-        
-            # Okay, we have a name match.  We now follow the production all the way
-            # through the state machine until we get the . on the right hand side
-
-            lr_index = p.lr_index
-            j = state
-            while lr_index < p.len - 1:
-                 lr_index = lr_index + 1
-                 t = p.prod[lr_index]
-
-                 # Check to see if this symbol and state are a non-terminal transition
-                 if dtrans.has_key((j,t)):
-                       # Yes.  Okay, there is some chance that this is an includes relation
-                       # the only way to know for certain is whether the rest of the 
-                       # production derives empty
-
-                       li = lr_index + 1
-                       while li < p.len:
-                            if Terminals.has_key(p.prod[li]): break      # No forget it
-                            if not nullable.has_key(p.prod[li]): break
-                            li = li + 1
-                       else:
-                            # Appears to be a relation between (j,t) and (state,N)
-                            includes.append((j,t))
-
-                 g = lr0_goto(C[j],t)               # Go to next set             
-                 j = _lr0_cidhash.get(id(g),-1)     # Go to next state
-             
-            # When we get here, j is the final state, now we have to locate the production
-            for r in C[j]:
-                 if r.name != p.name: continue
-                 if r.len != p.len:   continue
-                 i = 0
-                 # This look is comparing a production ". A B C" with "A B C ."
-                 while i < r.lr_index:
-                      if r.prod[i] != p.prod[i+1]: break
-                      i = i + 1
-                 else:
-                      lookb.append((j,r))
-        for i in includes:
-             if not includedict.has_key(i): includedict[i] = []
-             includedict[i].append((state,N))
-        lookdict[(state,N)] = lookb
-
-    return lookdict,includedict
-
-# -----------------------------------------------------------------------------
-# digraph()
-# traverse()
-#
-# The following two functions are used to compute set valued functions
-# of the form:
-#
-#     F(x) = F'(x) U U{F(y) | x R y}
-#
-# This is used to compute the values of Read() sets as well as FOLLOW sets
-# in LALR(1) generation.
-#
-# Inputs:  X    - An input set
-#          R    - A relation
-#          FP   - Set-valued function
-# ------------------------------------------------------------------------------
-
-def digraph(X,R,FP):
-    N = { }
-    for x in X:
-       N[x] = 0
-    stack = []
-    F = { }
-    for x in X:
-        if N[x] == 0: traverse(x,N,stack,F,X,R,FP)
-    return F
-
-def traverse(x,N,stack,F,X,R,FP):
-    stack.append(x)
-    d = len(stack)
-    N[x] = d
-    F[x] = FP(x)             # F(X) <- F'(x)
-    
-    rel = R(x)               # Get y's related to x
-    for y in rel:
-        if N[y] == 0:
-             traverse(y,N,stack,F,X,R,FP)
-        N[x] = min(N[x],N[y])
-        for a in F.get(y,[]):
-            if a not in F[x]: F[x].append(a)
-    if N[x] == d:
-       N[stack[-1]] = sys.maxint
-       F[stack[-1]] = F[x]
-       element = stack.pop()
-       while element != x:
-           N[stack[-1]] = sys.maxint
-           F[stack[-1]] = F[x]
-           element = stack.pop()
-
-# -----------------------------------------------------------------------------
-# compute_read_sets()
-#
-# Given a set of LR(0) items, this function computes the read sets.
-#
-# Inputs:  C        =  Set of LR(0) items
-#          ntrans   = Set of nonterminal transitions
-#          nullable = Set of empty transitions
-#
-# Returns a set containing the read sets
-# -----------------------------------------------------------------------------
-
-def compute_read_sets(C, ntrans, nullable):
-    FP = lambda x: dr_relation(C,x,nullable)
-    R =  lambda x: reads_relation(C,x,nullable)
-    F = digraph(ntrans,R,FP)
-    return F
-
-# -----------------------------------------------------------------------------
-# compute_follow_sets()
-#
-# Given a set of LR(0) items, a set of non-terminal transitions, a readset, 
-# and an include set, this function computes the follow sets
-#
-# Follow(p,A) = Read(p,A) U U {Follow(p',B) | (p,A) INCLUDES (p',B)}
-#
-# Inputs:    
-#            ntrans     = Set of nonterminal transitions
-#            readsets   = Readset (previously computed)
-#            inclsets   = Include sets (previously computed)
-#
-# Returns a set containing the follow sets      
-# -----------------------------------------------------------------------------
-
-def compute_follow_sets(ntrans,readsets,inclsets):
-     FP = lambda x: readsets[x]
-     R  = lambda x: inclsets.get(x,[])
-     F = digraph(ntrans,R,FP)
-     return F
-
-# -----------------------------------------------------------------------------
-# add_lookaheads()
-#
-# Attaches the lookahead symbols to grammar rules. 
-#
-# Inputs:    lookbacks         -  Set of lookback relations
-#            followset         -  Computed follow set
-#
-# This function directly attaches the lookaheads to productions contained
-# in the lookbacks set
-# -----------------------------------------------------------------------------
-
-def add_lookaheads(lookbacks,followset):
-    for trans,lb in lookbacks.items():
-        # Loop over productions in lookback
-        for state,p in lb:
-             if not p.lookaheads.has_key(state):
-                  p.lookaheads[state] = []
-             f = followset.get(trans,[])
-             for a in f:
-                  if a not in p.lookaheads[state]: p.lookaheads[state].append(a)
-
-# -----------------------------------------------------------------------------
-# add_lalr_lookaheads()
-#
-# This function does all of the work of adding lookahead information for use
-# with LALR parsing
-# -----------------------------------------------------------------------------
-
-def add_lalr_lookaheads(C):
-    # Determine all of the nullable nonterminals
-    nullable = compute_nullable_nonterminals()
-
-    # Find all non-terminal transitions
-    trans = find_nonterminal_transitions(C)
-
-    # Compute read sets
-    readsets = compute_read_sets(C,trans,nullable)
-
-    # Compute lookback/includes relations
-    lookd, included = compute_lookback_includes(C,trans,nullable)
-
-    # Compute LALR FOLLOW sets
-    followsets = compute_follow_sets(trans,readsets,included)
-    
-    # Add all of the lookaheads
-    add_lookaheads(lookd,followsets)
-
-# -----------------------------------------------------------------------------
-# lr_parse_table()
-#
-# This function constructs the parse tables for SLR or LALR
-# -----------------------------------------------------------------------------
-def lr_parse_table(method):
-    global _lr_method
-    goto = _lr_goto           # Goto array
-    action = _lr_action       # Action array
-    actionp = { }             # Action production array (temporary)
-
-    _lr_method = method
-    
-    n_srconflict = 0
-    n_rrconflict = 0
-
-    if yaccdebug:
-        sys.stderr.write("yacc: Generating %s parsing table...\n" % method)        
-        _vf.write("\n\nParsing method: %s\n\n" % method)
-        
-    # Step 1: Construct C = { I0, I1, ... IN}, collection of LR(0) items
-    # This determines the number of states
-    
-    C = lr0_items()
-
-    if method == 'LALR':
-        add_lalr_lookaheads(C)
-
-    # Build the parser table, state by state
-    st = 0
-    for I in C:
-        # Loop over each production in I
-        actlist = [ ]              # List of actions
-        
-        if yaccdebug:
-            _vf.write("\nstate %d\n\n" % st)
-            for p in I:
-                _vf.write("    (%d) %s\n" % (p.number, str(p)))
-            _vf.write("\n")
-
-        for p in I:
-            try:
-                if p.prod[-1] == ".":
-                    if p.name == "S'":
-                        # Start symbol. Accept!
-                        action[st,"$end"] = 0
-                        actionp[st,"$end"] = p
-                    else:
-                        # We are at the end of a production.  Reduce!
-                        if method == 'LALR':
-                            laheads = p.lookaheads[st]
-                        else:
-                            laheads = Follow[p.name]
-                        for a in laheads:
-                            actlist.append((a,p,"reduce using rule %d (%s)" % (p.number,p)))
-                            r = action.get((st,a),None)
-                            if r is not None:
-                                # Whoa. Have a shift/reduce or reduce/reduce conflict
-                                if r > 0:
-                                    # Need to decide on shift or reduce here
-                                    # By default we favor shifting. Need to add
-                                    # some precedence rules here.
-                                    sprec,slevel = Productions[actionp[st,a].number].prec                                    
-                                    rprec,rlevel = Precedence.get(a,('right',0))
-                                    if (slevel < rlevel) or ((slevel == rlevel) and (rprec == 'left')):
-                                        # We really need to reduce here.  
-                                        action[st,a] = -p.number
-                                        actionp[st,a] = p
-                                        if not slevel and not rlevel:
-                                            _vfc.write("shift/reduce conflict in state %d resolved as reduce.\n" % st)
-                                            _vf.write("  ! shift/reduce conflict for %s resolved as reduce.\n" % a)
-                                            n_srconflict += 1
-                                    elif (slevel == rlevel) and (rprec == 'nonassoc'):
-                                        action[st,a] = None
-                                    else:
-                                        # Hmmm. Guess we'll keep the shift
-                                        if not rlevel:
-                                            _vfc.write("shift/reduce conflict in state %d resolved as shift.\n" % st)
-                                            _vf.write("  ! shift/reduce conflict for %s resolved as shift.\n" % a)
-                                            n_srconflict +=1                                    
-                                elif r < 0:
-                                    # Reduce/reduce conflict.   In this case, we favor the rule
-                                    # that was defined first in the grammar file
-                                    oldp = Productions[-r]
-                                    pp = Productions[p.number]
-                                    if oldp.line > pp.line:
-                                        action[st,a] = -p.number
-                                        actionp[st,a] = p
-                                    # sys.stderr.write("Reduce/reduce conflict in state %d\n" % st)
-                                    n_rrconflict += 1
-                                    _vfc.write("reduce/reduce conflict in state %d resolved using rule %d (%s).\n" % (st, actionp[st,a].number, actionp[st,a]))
-                                    _vf.write("  ! reduce/reduce conflict for %s resolved using rule %d (%s).\n" % (a,actionp[st,a].number, actionp[st,a]))
-                                else:
-                                    sys.stderr.write("Unknown conflict in state %d\n" % st)
-                            else:
-                                action[st,a] = -p.number
-                                actionp[st,a] = p
-                else:
-                    i = p.lr_index
-                    a = p.prod[i+1]       # Get symbol right after the "."
-                    if Terminals.has_key(a):
-                        g = lr0_goto(I,a)
-                        j = _lr0_cidhash.get(id(g),-1)
-                        if j >= 0:
-                            # We are in a shift state
-                            actlist.append((a,p,"shift and go to state %d" % j))
-                            r = action.get((st,a),None)
-                            if r is not None:
-                                # Whoa have a shift/reduce or shift/shift conflict
-                                if r > 0:
-                                    if r != j:
-                                        sys.stderr.write("Shift/shift conflict in state %d\n" % st)
-                                elif r < 0:
-                                    # Do a precedence check.
-                                    #   -  if precedence of reduce rule is higher, we reduce.
-                                    #   -  if precedence of reduce is same and left assoc, we reduce.
-                                    #   -  otherwise we shift
-                                    rprec,rlevel = Productions[actionp[st,a].number].prec
-                                    sprec,slevel = Precedence.get(a,('right',0))
-                                    if (slevel > rlevel) or ((slevel == rlevel) and (rprec != 'left')):
-                                        # We decide to shift here... highest precedence to shift
-                                        action[st,a] = j
-                                        actionp[st,a] = p
-                                        if not rlevel:
-                                            n_srconflict += 1
-                                            _vfc.write("shift/reduce conflict in state %d resolved as shift.\n" % st)
-                                            _vf.write("  ! shift/reduce conflict for %s resolved as shift.\n" % a)
-                                    elif (slevel == rlevel) and (rprec == 'nonassoc'):
-                                        action[st,a] = None
-                                    else:                                            
-                                        # Hmmm. Guess we'll keep the reduce
-                                        if not slevel and not rlevel:
-                                            n_srconflict +=1
-                                            _vfc.write("shift/reduce conflict in state %d resolved as reduce.\n" % st)
-                                            _vf.write("  ! shift/reduce conflict for %s resolved as reduce.\n" % a)
-                                            
-                                else:
-                                    sys.stderr.write("Unknown conflict in state %d\n" % st)
-                            else:
-                                action[st,a] = j
-                                actionp[st,a] = p
-                                
-            except StandardError,e:
-                raise YaccError, "Hosed in lr_parse_table", e
-
-        # Print the actions associated with each terminal
-        if yaccdebug:
-          _actprint = { }
-          for a,p,m in actlist:
-            if action.has_key((st,a)):
-                if p is actionp[st,a]:
-                    _vf.write("    %-15s %s\n" % (a,m))
-                    _actprint[(a,m)] = 1
-          _vf.write("\n")
-          for a,p,m in actlist:
-            if action.has_key((st,a)):
-                if p is not actionp[st,a]:
-                    if not _actprint.has_key((a,m)):
-                        _vf.write("  ! %-15s [ %s ]\n" % (a,m))
-                        _actprint[(a,m)] = 1
-            
-        # Construct the goto table for this state
-        if yaccdebug:
-            _vf.write("\n")
-        nkeys = { }
-        for ii in I:
-            for s in ii.usyms:
-                if Nonterminals.has_key(s):
-                    nkeys[s] = None
-        for n in nkeys.keys():
-            g = lr0_goto(I,n)
-            j = _lr0_cidhash.get(id(g),-1)            
-            if j >= 0:
-                goto[st,n] = j
-                if yaccdebug:
-                    _vf.write("    %-30s shift and go to state %d\n" % (n,j))
-
-        st += 1
-
-    if yaccdebug:
-        if n_srconflict == 1:
-            sys.stderr.write("yacc: %d shift/reduce conflict\n" % n_srconflict)
-        if n_srconflict > 1:
-            sys.stderr.write("yacc: %d shift/reduce conflicts\n" % n_srconflict)
-        if n_rrconflict == 1:
-            sys.stderr.write("yacc: %d reduce/reduce conflict\n" % n_rrconflict)
-        if n_rrconflict > 1:
-            sys.stderr.write("yacc: %d reduce/reduce conflicts\n" % n_rrconflict)
-
-# -----------------------------------------------------------------------------
-#                          ==== LR Utility functions ====
-# -----------------------------------------------------------------------------
-
-# -----------------------------------------------------------------------------
-# _lr_write_tables()
-#
-# This function writes the LR parsing tables to a file
-# -----------------------------------------------------------------------------
-
-def lr_write_tables(modulename=tab_module,outputdir=''):
-    filename = os.path.join(outputdir,modulename) + ".py"
-    try:
-        f = open(filename,"w")
-
-        f.write("""
-# %s
-# This file is automatically generated. Do not edit.
-
-_lr_method = %s
-
-_lr_signature = %s
-""" % (filename, repr(_lr_method), repr(Signature.digest())))
-
-        # Change smaller to 0 to go back to original tables
-        smaller = 1
-                
-        # Factor out names to try and make smaller
-        if smaller:
-            items = { }
-        
-            for k,v in _lr_action.items():
-                i = items.get(k[1])
-                if not i:
-                    i = ([],[])
-                    items[k[1]] = i
-                i[0].append(k[0])
-                i[1].append(v)
-
-            f.write("\n_lr_action_items = {")
-            for k,v in items.items():
-                f.write("%r:([" % k)
-                for i in v[0]:
-                    f.write("%r," % i)
-                f.write("],[")
-                for i in v[1]:
-                    f.write("%r," % i)
-                           
-                f.write("]),")
-            f.write("}\n")
-
-            f.write("""
-_lr_action = { }
-for _k, _v in _lr_action_items.items():
-   for _x,_y in zip(_v[0],_v[1]):
-       _lr_action[(_x,_k)] = _y
-del _lr_action_items
-""")
-            
-        else:
-            f.write("\n_lr_action = { ");
-            for k,v in _lr_action.items():
-                f.write("(%r,%r):%r," % (k[0],k[1],v))
-            f.write("}\n");
-
-        if smaller:
-            # Factor out names to try and make smaller
-            items = { }
-        
-            for k,v in _lr_goto.items():
-                i = items.get(k[1])
-                if not i:
-                    i = ([],[])
-                    items[k[1]] = i
-                i[0].append(k[0])
-                i[1].append(v)
-
-            f.write("\n_lr_goto_items = {")
-            for k,v in items.items():
-                f.write("%r:([" % k)
-                for i in v[0]:
-                    f.write("%r," % i)
-                f.write("],[")
-                for i in v[1]:
-                    f.write("%r," % i)
-                           
-                f.write("]),")
-            f.write("}\n")
-
-            f.write("""
-_lr_goto = { }
-for _k, _v in _lr_goto_items.items():
-   for _x,_y in zip(_v[0],_v[1]):
-       _lr_goto[(_x,_k)] = _y
-del _lr_goto_items
-""")
-        else:
-            f.write("\n_lr_goto = { ");
-            for k,v in _lr_goto.items():
-                f.write("(%r,%r):%r," % (k[0],k[1],v))                    
-            f.write("}\n");
-
-        # Write production table
-        f.write("_lr_productions = [\n")
-        for p in Productions:
-            if p:
-                if (p.func):
-                    f.write("  (%r,%d,%r,%r,%d),\n" % (p.name, p.len, p.func.__name__,p.file,p.line))
-                else:
-                    f.write("  (%r,%d,None,None,None),\n" % (p.name, p.len))
-            else:
-                f.write("  None,\n")
-        f.write("]\n")
-        
-        f.close()
-
-    except IOError,e:
-        print "Unable to create '%s'" % filename
-        print e
-        return
-
-def lr_read_tables(module=tab_module,optimize=0):
-    global _lr_action, _lr_goto, _lr_productions, _lr_method
-    try:
-        exec "import %s as parsetab" % module
-        
-        if (optimize) or (Signature.digest() == parsetab._lr_signature):
-            _lr_action = parsetab._lr_action
-            _lr_goto   = parsetab._lr_goto
-            _lr_productions = parsetab._lr_productions
-            _lr_method = parsetab._lr_method
-            return 1
-        else:
-            return 0
-        
-    except (ImportError,AttributeError):
-        return 0
-
-
-# Available instance types.  This is used when parsers are defined by a class.
-# it's a little funky because I want to preserve backwards compatibility
-# with Python 2.0 where types.ObjectType is undefined.
-
-try:
-   _INSTANCETYPE = (types.InstanceType, types.ObjectType)
-except AttributeError:
-   _INSTANCETYPE = types.InstanceType
-
-# -----------------------------------------------------------------------------
-# yacc(module)
-#
-# Build the parser module
-# -----------------------------------------------------------------------------
-
-def yacc(method=default_lr, debug=yaccdebug, module=None, tabmodule=tab_module, start=None, check_recursion=1, optimize=0,write_tables=1,debugfile=debug_file,outputdir=''):
-    global yaccdebug
-    yaccdebug = debug
-    
-    initialize_vars()
-    files = { }
-    error = 0
-
-
-    # Add parsing method to signature
-    Signature.update(method)
-    
-    # If a "module" parameter was supplied, extract its dictionary.
-    # Note: a module may in fact be an instance as well.
-    
-    if module:
-        # User supplied a module object.
-        if isinstance(module, types.ModuleType):
-            ldict = module.__dict__
-        elif isinstance(module, _INSTANCETYPE):
-            _items = [(k,getattr(module,k)) for k in dir(module)]
-            ldict = { }
-            for i in _items:
-                ldict[i[0]] = i[1]
-        else:
-            raise ValueError,"Expected a module"
-        
-    else:
-        # No module given.  We might be able to get information from the caller.
-        # Throw an exception and unwind the traceback to get the globals
-        
-        try:
-            raise RuntimeError
-        except RuntimeError:
-            e,b,t = sys.exc_info()
-            f = t.tb_frame
-            f = f.f_back           # Walk out to our calling function
-            ldict = f.f_globals    # Grab its globals dictionary
-
-    # Add starting symbol to signature
-    if not start:
-        start = ldict.get("start",None)
-    if start:
-        Signature.update(start)
-
-    # If running in optimized mode.  We're going to
-
-    if (optimize and lr_read_tables(tabmodule,1)):
-        # Read parse table
-        del Productions[:]
-        for p in _lr_productions:
-            if not p:
-                Productions.append(None)
-            else:
-                m = MiniProduction()
-                m.name = p[0]
-                m.len  = p[1]
-                m.file = p[3]
-                m.line = p[4]
-                if p[2]:
-                    m.func = ldict[p[2]]
-                Productions.append(m)
-        
-    else:
-        # Get the tokens map
-        if (module and isinstance(module,_INSTANCETYPE)):
-            tokens = getattr(module,"tokens",None)
-        else:
-            tokens = ldict.get("tokens",None)
-    
-        if not tokens:
-            raise YaccError,"module does not define a list 'tokens'"
-        if not (isinstance(tokens,types.ListType) or isinstance(tokens,types.TupleType)):
-            raise YaccError,"tokens must be a list or tuple."
-
-        # Check to see if a requires dictionary is defined.
-        requires = ldict.get("require",None)
-        if requires:
-            if not (isinstance(requires,types.DictType)):
-                raise YaccError,"require must be a dictionary."
-
-            for r,v in requires.items():
-                try:
-                    if not (isinstance(v,types.ListType)):
-                        raise TypeError
-                    v1 = [x.split(".") for x in v]
-                    Requires[r] = v1
-                except StandardError:
-                    print "Invalid specification for rule '%s' in require. Expected a list of strings" % r            
-
-        
-        # Build the dictionary of terminals.  We a record a 0 in the
-        # dictionary to track whether or not a terminal is actually
-        # used in the grammar
-
-        if 'error' in tokens:
-            print "yacc: Illegal token 'error'.  Is a reserved word."
-            raise YaccError,"Illegal token name"
-
-        for n in tokens:
-            if Terminals.has_key(n):
-                print "yacc: Warning. Token '%s' multiply defined." % n
-            Terminals[n] = [ ]
-
-        Terminals['error'] = [ ]
-
-        # Get the precedence map (if any)
-        prec = ldict.get("precedence",None)
-        if prec:
-            if not (isinstance(prec,types.ListType) or isinstance(prec,types.TupleType)):
-                raise YaccError,"precedence must be a list or tuple."
-            add_precedence(prec)
-            Signature.update(repr(prec))
-
-        for n in tokens:
-            if not Precedence.has_key(n):
-                Precedence[n] = ('right',0)         # Default, right associative, 0 precedence
-
-        # Look for error handler
-        ef = ldict.get('p_error',None)
-        if ef:
-            if isinstance(ef,types.FunctionType):
-                ismethod = 0
-            elif isinstance(ef, types.MethodType):
-                ismethod = 1
-            else:
-                raise YaccError,"'p_error' defined, but is not a function or method."                
-            eline = ef.func_code.co_firstlineno
-            efile = ef.func_code.co_filename
-            files[efile] = None
-
-            if (ef.func_code.co_argcount != 1+ismethod):
-                raise YaccError,"%s:%d: p_error() requires 1 argument." % (efile,eline)
-            global Errorfunc
-            Errorfunc = ef
-        else:
-            print "yacc: Warning. no p_error() function is defined."
-            
-        # Get the list of built-in functions with p_ prefix
-        symbols = [ldict[f] for f in ldict.keys()
-               if (type(ldict[f]) in (types.FunctionType, types.MethodType) and ldict[f].__name__[:2] == 'p_'
-                   and ldict[f].__name__ != 'p_error')]
-
-        # Check for non-empty symbols
-        if len(symbols) == 0:
-            raise YaccError,"no rules of the form p_rulename are defined."
-    
-        # Sort the symbols by line number
-        symbols.sort(lambda x,y: cmp(x.func_code.co_firstlineno,y.func_code.co_firstlineno))
-
-        # Add all of the symbols to the grammar
-        for f in symbols:
-            if (add_function(f)) < 0:
-                error += 1
-            else:
-                files[f.func_code.co_filename] = None
-
-        # Make a signature of the docstrings
-        for f in symbols:
-            if f.__doc__:
-                Signature.update(f.__doc__)
-    
-        lr_init_vars()
-
-        if error:
-            raise YaccError,"Unable to construct parser."
-
-        if not lr_read_tables(tabmodule):
-
-            # Validate files
-            for filename in files.keys():
-                if not validate_file(filename):
-                    error = 1
-
-            # Validate dictionary
-            validate_dict(ldict)
-
-            if start and not Prodnames.has_key(start):
-                raise YaccError,"Bad starting symbol '%s'" % start
-        
-            augment_grammar(start)    
-            error = verify_productions(cycle_check=check_recursion)
-            otherfunc = [ldict[f] for f in ldict.keys()
-               if (type(f) in (types.FunctionType,types.MethodType) and ldict[f].__name__[:2] != 'p_')]
-
-            if error:
-                raise YaccError,"Unable to construct parser."
-            
-            build_lritems()
-            compute_first1()
-            compute_follow(start)
-        
-            if method in ['SLR','LALR']:
-                lr_parse_table(method)
-            else:
-                raise YaccError, "Unknown parsing method '%s'" % method
-
-            if write_tables:
-                lr_write_tables(tabmodule,outputdir)        
-    
-            if yaccdebug:
-                try:
-                    f = open(os.path.join(outputdir,debugfile),"w")
-                    f.write(_vfc.getvalue())
-                    f.write("\n\n")
-                    f.write(_vf.getvalue())
-                    f.close()
-                except IOError,e:
-                    print "yacc: can't create '%s'" % debugfile,e
-        
-    # Made it here.   Create a parser object and set up its internal state.
-    # Set global parse() method to bound method of parser object.
-
-    p = Parser("xyzzy")
-    p.productions = Productions
-    p.errorfunc = Errorfunc
-    p.action = _lr_action
-    p.goto   = _lr_goto
-    p.method = _lr_method
-    p.require = Requires
-
-    global parse
-    parse = p.parse
-
-    global parser
-    parser = p
-
-    # Clean up all of the globals we created
-    if (not optimize):
-        yacc_cleanup()
-    return p
-
-# yacc_cleanup function.  Delete all of the global variables
-# used during table construction
-
-def yacc_cleanup():
-    global _lr_action, _lr_goto, _lr_method, _lr_goto_cache
-    del _lr_action, _lr_goto, _lr_method, _lr_goto_cache
-
-    global Productions, Prodnames, Prodmap, Terminals 
-    global Nonterminals, First, Follow, Precedence, LRitems
-    global Errorfunc, Signature, Requires
-    
-    del Productions, Prodnames, Prodmap, Terminals
-    del Nonterminals, First, Follow, Precedence, LRitems
-    del Errorfunc, Signature, Requires
-    
-    global _vf, _vfc
-    del _vf, _vfc
-    
-    
-# Stub that raises an error if parsing is attempted without first calling yacc()
-def parse(*args,**kwargs):
-    raise YaccError, "yacc: No parser built with yacc()"
-
diff --git a/chall/ply-2.2/ply/yacc.pyc b/chall/ply-2.2/ply/yacc.pyc
deleted file mode 100644
index 4b1adf7..0000000
Binary files a/chall/ply-2.2/ply/yacc.pyc and /dev/null differ
diff --git a/chall/ply-2.2/setup.py b/chall/ply-2.2/setup.py
deleted file mode 100644
index 0e74964..0000000
--- a/chall/ply-2.2/setup.py
+++ /dev/null
@@ -1,27 +0,0 @@
-from distutils.core import setup
-
-setup(name = "ply",
-            description="Python Lex & Yacc",
-            long_description = """
-PLY is yet another implementation of lex and yacc for Python. Although several other
-parsing tools are available for Python, there are several reasons why you might
-want to take a look at PLY: 
-
-It's implemented entirely in Python. 
-
-It uses LR-parsing which is reasonably efficient and well suited for larger grammars. 
-
-PLY provides most of the standard lex/yacc features including support for empty 
-productions, precedence rules, error recovery, and support for ambiguous grammars. 
-
-PLY is extremely easy to use and provides very extensive error checking. 
-""",
-            license="""Lesser GPL (LGPL)""",
-            version = "2.2",
-            author = "David Beazley",
-            author_email = "dave@dabeaz.com",
-            maintainer = "David Beazley",
-            maintainer_email = "dave@dabeaz.com",
-            url = "http://www.dabeaz.com/ply/",
-            packages = ['ply'],
-            )
diff --git a/chall/ply-2.2/test/README b/chall/ply-2.2/test/README
deleted file mode 100644
index aac12b0..0000000
--- a/chall/ply-2.2/test/README
+++ /dev/null
@@ -1,11 +0,0 @@
-This directory mostly contains tests for various types of error
-conditions.  To run:
-
-  $ python testlex.py .
-  $ python testyacc.py .
-
-The tests can also be run using the Python unittest module.
-
-   $ python rununit.py
-
-The script 'cleanup.sh' cleans up this directory to its original state.
diff --git a/chall/ply-2.2/test/calclex.py b/chall/ply-2.2/test/calclex.py
deleted file mode 100644
index 2550734..0000000
--- a/chall/ply-2.2/test/calclex.py
+++ /dev/null
@@ -1,49 +0,0 @@
-# -----------------------------------------------------------------------------
-# calclex.py
-# -----------------------------------------------------------------------------
-import sys
-
-sys.path.append("..")
-import ply.lex as lex
-
-tokens = (
-    'NAME','NUMBER',
-    'PLUS','MINUS','TIMES','DIVIDE','EQUALS',
-    'LPAREN','RPAREN',
-    )
-
-# Tokens
-
-t_PLUS    = r'\+'
-t_MINUS   = r'-'
-t_TIMES   = r'\*'
-t_DIVIDE  = r'/'
-t_EQUALS  = r'='
-t_LPAREN  = r'\('
-t_RPAREN  = r'\)'
-t_NAME    = r'[a-zA-Z_][a-zA-Z0-9_]*'
-
-def t_NUMBER(t):
-    r'\d+'
-    try:
-        t.value = int(t.value)
-    except ValueError:
-        print "Integer value too large", t.value
-        t.value = 0
-    return t
-
-t_ignore = " \t"
-
-def t_newline(t):
-    r'\n+'
-    t.lineno += t.value.count("\n")
-    
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-    
-# Build the lexer
-lex.lex()
-
-
-
diff --git a/chall/ply-2.2/test/cleanup.sh b/chall/ply-2.2/test/cleanup.sh
deleted file mode 100755
index d7d99b6..0000000
--- a/chall/ply-2.2/test/cleanup.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-
-rm -f *~ *.pyc *.dif *.out 
-
diff --git a/chall/ply-2.2/test/lex_doc1.exp b/chall/ply-2.2/test/lex_doc1.exp
deleted file mode 100644
index 5b63c1e..0000000
--- a/chall/ply-2.2/test/lex_doc1.exp
+++ /dev/null
@@ -1 +0,0 @@
-./lex_doc1.py:18: No regular expression defined for rule 't_NUMBER'
diff --git a/chall/ply-2.2/test/lex_doc1.py b/chall/ply-2.2/test/lex_doc1.py
deleted file mode 100644
index 3951b5c..0000000
--- a/chall/ply-2.2/test/lex_doc1.py
+++ /dev/null
@@ -1,30 +0,0 @@
-# lex_token.py
-#
-# Missing documentation string
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-def t_NUMBER(t):
-    pass
-
-def t_error(t):
-    pass
-
-
-import sys
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_dup1.exp b/chall/ply-2.2/test/lex_dup1.exp
deleted file mode 100644
index 2098a40..0000000
--- a/chall/ply-2.2/test/lex_dup1.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./lex_dup1.py:20: Rule t_NUMBER redefined. Previously defined on line 18
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_dup1.py b/chall/ply-2.2/test/lex_dup1.py
deleted file mode 100644
index 68f8092..0000000
--- a/chall/ply-2.2/test/lex_dup1.py
+++ /dev/null
@@ -1,29 +0,0 @@
-# lex_token.py
-#
-# Duplicated rule specifiers
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-t_NUMBER = r'\d+'
-
-def t_error(t):
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_dup2.exp b/chall/ply-2.2/test/lex_dup2.exp
deleted file mode 100644
index d327cfe..0000000
--- a/chall/ply-2.2/test/lex_dup2.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./lex_dup2.py:22: Rule t_NUMBER redefined. Previously defined on line 18
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_dup2.py b/chall/ply-2.2/test/lex_dup2.py
deleted file mode 100644
index f4d346e..0000000
--- a/chall/ply-2.2/test/lex_dup2.py
+++ /dev/null
@@ -1,33 +0,0 @@
-# lex_token.py
-#
-# Duplicated rule specifiers
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-def t_NUMBER(t):
-    r'\d+'
-    pass
-
-def t_NUMBER(t):
-    r'\d+'
-    pass
-
-def t_error(t):
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_dup3.exp b/chall/ply-2.2/test/lex_dup3.exp
deleted file mode 100644
index ec0680c..0000000
--- a/chall/ply-2.2/test/lex_dup3.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./lex_dup3.py:20: Rule t_NUMBER redefined. Previously defined on line 18
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_dup3.py b/chall/ply-2.2/test/lex_dup3.py
deleted file mode 100644
index e17b520..0000000
--- a/chall/ply-2.2/test/lex_dup3.py
+++ /dev/null
@@ -1,31 +0,0 @@
-# lex_token.py
-#
-# Duplicated rule specifiers
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-def t_NUMBER(t):
-    r'\d+'
-    pass
-
-def t_error(t):
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_empty.exp b/chall/ply-2.2/test/lex_empty.exp
deleted file mode 100644
index af38602..0000000
--- a/chall/ply-2.2/test/lex_empty.exp
+++ /dev/null
@@ -1 +0,0 @@
-SyntaxError: lex: no rules of the form t_rulename are defined.
diff --git a/chall/ply-2.2/test/lex_empty.py b/chall/ply-2.2/test/lex_empty.py
deleted file mode 100644
index 96625f7..0000000
--- a/chall/ply-2.2/test/lex_empty.py
+++ /dev/null
@@ -1,20 +0,0 @@
-# lex_token.py
-#
-# No rules defined
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_error1.exp b/chall/ply-2.2/test/lex_error1.exp
deleted file mode 100644
index baa19e5..0000000
--- a/chall/ply-2.2/test/lex_error1.exp
+++ /dev/null
@@ -1 +0,0 @@
-lex: Warning. no t_error rule is defined.
diff --git a/chall/ply-2.2/test/lex_error1.py b/chall/ply-2.2/test/lex_error1.py
deleted file mode 100644
index a99d9be..0000000
--- a/chall/ply-2.2/test/lex_error1.py
+++ /dev/null
@@ -1,24 +0,0 @@
-# lex_token.py
-#
-# Missing t_error() rule
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_error2.exp b/chall/ply-2.2/test/lex_error2.exp
deleted file mode 100644
index fb1b55c..0000000
--- a/chall/ply-2.2/test/lex_error2.exp
+++ /dev/null
@@ -1 +0,0 @@
-SyntaxError: lex: Rule 't_error' must be defined as a function
diff --git a/chall/ply-2.2/test/lex_error2.py b/chall/ply-2.2/test/lex_error2.py
deleted file mode 100644
index a59c8d4..0000000
--- a/chall/ply-2.2/test/lex_error2.py
+++ /dev/null
@@ -1,26 +0,0 @@
-# lex_token.py
-#
-# t_error defined, but not function
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-t_error = "foo"
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_error3.exp b/chall/ply-2.2/test/lex_error3.exp
deleted file mode 100644
index 1b482bf..0000000
--- a/chall/ply-2.2/test/lex_error3.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./lex_error3.py:20: Rule 't_error' requires an argument.
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_error3.py b/chall/ply-2.2/test/lex_error3.py
deleted file mode 100644
index 584600f..0000000
--- a/chall/ply-2.2/test/lex_error3.py
+++ /dev/null
@@ -1,27 +0,0 @@
-# lex_token.py
-#
-# t_error defined as function, but with wrong # args
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-def t_error():
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_error4.exp b/chall/ply-2.2/test/lex_error4.exp
deleted file mode 100644
index 98505a2..0000000
--- a/chall/ply-2.2/test/lex_error4.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./lex_error4.py:20: Rule 't_error' has too many arguments.
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_error4.py b/chall/ply-2.2/test/lex_error4.py
deleted file mode 100644
index d05de74..0000000
--- a/chall/ply-2.2/test/lex_error4.py
+++ /dev/null
@@ -1,27 +0,0 @@
-# lex_token.py
-#
-# t_error defined as function, but too many args
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-def t_error(t,s):
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_hedit.exp b/chall/ply-2.2/test/lex_hedit.exp
deleted file mode 100644
index 7b27dcb..0000000
--- a/chall/ply-2.2/test/lex_hedit.exp
+++ /dev/null
@@ -1,3 +0,0 @@
-(H_EDIT_DESCRIPTOR,'abc',1,0)
-(H_EDIT_DESCRIPTOR,'abcdefghij',1,6)
-(H_EDIT_DESCRIPTOR,'xy',1,20)
diff --git a/chall/ply-2.2/test/lex_hedit.py b/chall/ply-2.2/test/lex_hedit.py
deleted file mode 100644
index 0f87423..0000000
--- a/chall/ply-2.2/test/lex_hedit.py
+++ /dev/null
@@ -1,47 +0,0 @@
-# -----------------------------------------------------------------------------
-# hedit.py
-#
-# Paring of Fortran H Edit descriptions (Contributed by Pearu Peterson)
-#
-# These tokens can't be easily tokenized because they are of the following
-# form:
-#
-#   nHc1...cn
-#
-# where n is a positive integer and c1 ... cn are characters.
-#
-# This example shows how to modify the state of the lexer to parse
-# such tokens
-# -----------------------------------------------------------------------------
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = (
-    'H_EDIT_DESCRIPTOR',
-    )
-
-# Tokens
-t_ignore = " \t\n"
-
-def t_H_EDIT_DESCRIPTOR(t):
-    r"\d+H.*"                     # This grabs all of the remaining text
-    i = t.value.index('H')
-    n = eval(t.value[:i])
-    
-    # Adjust the tokenizing position
-    t.lexer.lexpos -= len(t.value) - (i+1+n)
-    t.value = t.value[i+1:i+1+n]
-    return t                                  
-    
-def t_error(t):
-    print "Illegal character '%s'" % t.value[0]
-    t.lexer.skip(1)
-    
-# Build the lexer
-lex.lex()
-lex.runmain(data="3Habc 10Habcdefghij 2Hxy")
-
-
-
diff --git a/chall/ply-2.2/test/lex_ignore.exp b/chall/ply-2.2/test/lex_ignore.exp
deleted file mode 100644
index 85e2961..0000000
--- a/chall/ply-2.2/test/lex_ignore.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-./lex_ignore.py:20: Rule 't_ignore' must be defined as a string.
-Traceback (most recent call last):
-  File "./lex_ignore.py", line 29, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_ignore.py b/chall/ply-2.2/test/lex_ignore.py
deleted file mode 100644
index 94b0266..0000000
--- a/chall/ply-2.2/test/lex_ignore.py
+++ /dev/null
@@ -1,31 +0,0 @@
-# lex_token.py
-#
-# Improperly specific ignore declaration
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-def t_ignore(t):
-    ' \t'
-    pass
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_nowarn.exp b/chall/ply-2.2/test/lex_nowarn.exp
deleted file mode 100644
index e69de29..0000000
diff --git a/chall/ply-2.2/test/lex_nowarn.py b/chall/ply-2.2/test/lex_nowarn.py
deleted file mode 100644
index d60d31c..0000000
--- a/chall/ply-2.2/test/lex_nowarn.py
+++ /dev/null
@@ -1,30 +0,0 @@
-# lex_token.py
-#
-# Missing t_error() rule
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    "NUMBER",
-    ]
-
-states = (('foo','exclusive'),)
-
-t_ignore = ' \t'
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-t_foo_NUMBER = r'\d+'
-
-sys.tracebacklimit = 0
-
-lex.lex(nowarn=1)
-
-
diff --git a/chall/ply-2.2/test/lex_re1.exp b/chall/ply-2.2/test/lex_re1.exp
deleted file mode 100644
index b9e621c..0000000
--- a/chall/ply-2.2/test/lex_re1.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-lex: Invalid regular expression for rule 't_NUMBER'. unbalanced parenthesis
-Traceback (most recent call last):
-  File "./lex_re1.py", line 25, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_re1.py b/chall/ply-2.2/test/lex_re1.py
deleted file mode 100644
index 9e544fe..0000000
--- a/chall/ply-2.2/test/lex_re1.py
+++ /dev/null
@@ -1,27 +0,0 @@
-# lex_token.py
-#
-# Bad regular expression in a string
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'(\d+'
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_re2.exp b/chall/ply-2.2/test/lex_re2.exp
deleted file mode 100644
index 7ba89b4..0000000
--- a/chall/ply-2.2/test/lex_re2.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-lex: Regular expression for rule 't_PLUS' matches empty string.
-Traceback (most recent call last):
-  File "./lex_re2.py", line 25, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_re2.py b/chall/ply-2.2/test/lex_re2.py
deleted file mode 100644
index 522b415..0000000
--- a/chall/ply-2.2/test/lex_re2.py
+++ /dev/null
@@ -1,27 +0,0 @@
-# lex_token.py
-#
-# Regular expression rule matches empty string
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+?'
-t_MINUS = r'-'
-t_NUMBER = r'(\d+)'
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_re3.exp b/chall/ply-2.2/test/lex_re3.exp
deleted file mode 100644
index 7cdcae4..0000000
--- a/chall/ply-2.2/test/lex_re3.exp
+++ /dev/null
@@ -1,8 +0,0 @@
-lex: Invalid regular expression for rule 't_POUND'. unbalanced parenthesis
-lex: Make sure '#' in rule 't_POUND' is escaped with '\#'.
-Traceback (most recent call last):
-  File "./lex_re3.py", line 27, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_re3.py b/chall/ply-2.2/test/lex_re3.py
deleted file mode 100644
index 099e156..0000000
--- a/chall/ply-2.2/test/lex_re3.py
+++ /dev/null
@@ -1,29 +0,0 @@
-# lex_token.py
-#
-# Regular expression rule matches empty string
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    "POUND",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'(\d+)'
-t_POUND = r'#'
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_rule1.exp b/chall/ply-2.2/test/lex_rule1.exp
deleted file mode 100644
index 0c23ca2..0000000
--- a/chall/ply-2.2/test/lex_rule1.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-lex: t_NUMBER not defined as a function or string
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_rule1.py b/chall/ply-2.2/test/lex_rule1.py
deleted file mode 100644
index e49a15b..0000000
--- a/chall/ply-2.2/test/lex_rule1.py
+++ /dev/null
@@ -1,27 +0,0 @@
-# lex_token.py
-#
-# Rule defined as some other type
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = 1
-
-def t_error(t):
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_state1.exp b/chall/ply-2.2/test/lex_state1.exp
deleted file mode 100644
index 8b58050..0000000
--- a/chall/ply-2.2/test/lex_state1.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-lex: states must be defined as a tuple or list.
-Traceback (most recent call last):
-  File "./lex_state1.py", line 38, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_state1.py b/chall/ply-2.2/test/lex_state1.py
deleted file mode 100644
index 7eb2976..0000000
--- a/chall/ply-2.2/test/lex_state1.py
+++ /dev/null
@@ -1,40 +0,0 @@
-# lex_state1.py
-#
-# Bad state declaration
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [ 
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-states = 'comment'
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-# Comments
-def t_comment(t):
-    r'/\*'
-    t.lexer.begin('comment')
-    print "Entering comment state"
-
-def t_comment_body_part(t):
-    r'(.|\n)*\*/'
-    print "comment body", t
-    t.lexer.begin('INITIAL')
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_state2.exp b/chall/ply-2.2/test/lex_state2.exp
deleted file mode 100644
index 11c33a7..0000000
--- a/chall/ply-2.2/test/lex_state2.exp
+++ /dev/null
@@ -1,8 +0,0 @@
-lex: invalid state specifier 'comment'. Must be a tuple (statename,'exclusive|inclusive')
-lex: invalid state specifier 'example'. Must be a tuple (statename,'exclusive|inclusive')
-Traceback (most recent call last):
-  File "./lex_state2.py", line 38, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_state2.py b/chall/ply-2.2/test/lex_state2.py
deleted file mode 100644
index b76b0db..0000000
--- a/chall/ply-2.2/test/lex_state2.py
+++ /dev/null
@@ -1,40 +0,0 @@
-# lex_state2.py
-#
-# Bad state declaration
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [ 
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-states = ('comment','example')
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-# Comments
-def t_comment(t):
-    r'/\*'
-    t.lexer.begin('comment')
-    print "Entering comment state"
-
-def t_comment_body_part(t):
-    r'(.|\n)*\*/'
-    print "comment body", t
-    t.lexer.begin('INITIAL')
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_state3.exp b/chall/ply-2.2/test/lex_state3.exp
deleted file mode 100644
index 2c3442c..0000000
--- a/chall/ply-2.2/test/lex_state3.exp
+++ /dev/null
@@ -1,8 +0,0 @@
-lex: state name 1 must be a string
-lex: No rules defined for state 'example'
-Traceback (most recent call last):
-  File "./lex_state3.py", line 40, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_state3.py b/chall/ply-2.2/test/lex_state3.py
deleted file mode 100644
index fb4ce6c..0000000
--- a/chall/ply-2.2/test/lex_state3.py
+++ /dev/null
@@ -1,42 +0,0 @@
-# lex_state2.py
-#
-# Bad state declaration
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [ 
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-comment = 1
-states = ((comment, 'inclusive'),
-          ('example', 'exclusive'))
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-# Comments
-def t_comment(t):
-    r'/\*'
-    t.lexer.begin('comment')
-    print "Entering comment state"
-
-def t_comment_body_part(t):
-    r'(.|\n)*\*/'
-    print "comment body", t
-    t.lexer.begin('INITIAL')
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_state4.exp b/chall/ply-2.2/test/lex_state4.exp
deleted file mode 100644
index 7497a47..0000000
--- a/chall/ply-2.2/test/lex_state4.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-lex: state type for state comment must be 'inclusive' or 'exclusive'
-Traceback (most recent call last):
-  File "./lex_state4.py", line 39, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_state4.py b/chall/ply-2.2/test/lex_state4.py
deleted file mode 100644
index 0993aa9..0000000
--- a/chall/ply-2.2/test/lex_state4.py
+++ /dev/null
@@ -1,41 +0,0 @@
-# lex_state2.py
-#
-# Bad state declaration
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [ 
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-comment = 1
-states = (('comment', 'exclsive'),)
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-# Comments
-def t_comment(t):
-    r'/\*'
-    t.lexer.begin('comment')
-    print "Entering comment state"
-
-def t_comment_body_part(t):
-    r'(.|\n)*\*/'
-    print "comment body", t
-    t.lexer.begin('INITIAL')
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_state5.exp b/chall/ply-2.2/test/lex_state5.exp
deleted file mode 100644
index e9e43e8..0000000
--- a/chall/ply-2.2/test/lex_state5.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-lex: state 'comment' already defined.
-Traceback (most recent call last):
-  File "./lex_state5.py", line 40, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_state5.py b/chall/ply-2.2/test/lex_state5.py
deleted file mode 100644
index c3c1cbf..0000000
--- a/chall/ply-2.2/test/lex_state5.py
+++ /dev/null
@@ -1,42 +0,0 @@
-# lex_state2.py
-#
-# Bad state declaration
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [ 
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-comment = 1
-states = (('comment', 'exclusive'),
-          ('comment', 'exclusive'))
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-# Comments
-def t_comment(t):
-    r'/\*'
-    t.lexer.begin('comment')
-    print "Entering comment state"
-
-def t_comment_body_part(t):
-    r'(.|\n)*\*/'
-    print "comment body", t
-    t.lexer.begin('INITIAL')
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_state_noerror.exp b/chall/ply-2.2/test/lex_state_noerror.exp
deleted file mode 100644
index e14149f..0000000
--- a/chall/ply-2.2/test/lex_state_noerror.exp
+++ /dev/null
@@ -1 +0,0 @@
-lex: Warning. no error rule is defined for exclusive state 'comment'
diff --git a/chall/ply-2.2/test/lex_state_noerror.py b/chall/ply-2.2/test/lex_state_noerror.py
deleted file mode 100644
index 853b157..0000000
--- a/chall/ply-2.2/test/lex_state_noerror.py
+++ /dev/null
@@ -1,41 +0,0 @@
-# lex_state2.py
-#
-# Declaration of a state for which no rules are defined
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [ 
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-comment = 1
-states = (('comment', 'exclusive'),)
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-# Comments
-def t_comment(t):
-    r'/\*'
-    t.lexer.begin('comment')
-    print "Entering comment state"
-
-def t_comment_body_part(t):
-    r'(.|\n)*\*/'
-    print "comment body", t
-    t.lexer.begin('INITIAL')
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_state_norule.exp b/chall/ply-2.2/test/lex_state_norule.exp
deleted file mode 100644
index a8ff4ca..0000000
--- a/chall/ply-2.2/test/lex_state_norule.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-lex: No rules defined for state 'example'
-Traceback (most recent call last):
-  File "./lex_state_norule.py", line 40, in ?
-    lex.lex()
-  File "../ply/lex.py", line 758, in lex
-    raise SyntaxError,"lex: Unable to build lexer."
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_state_norule.py b/chall/ply-2.2/test/lex_state_norule.py
deleted file mode 100644
index e48a319..0000000
--- a/chall/ply-2.2/test/lex_state_norule.py
+++ /dev/null
@@ -1,42 +0,0 @@
-# lex_state2.py
-#
-# Declaration of a state for which no rules are defined
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [ 
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-comment = 1
-states = (('comment', 'exclusive'),
-          ('example', 'exclusive'))
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-# Comments
-def t_comment(t):
-    r'/\*'
-    t.lexer.begin('comment')
-    print "Entering comment state"
-
-def t_comment_body_part(t):
-    r'(.|\n)*\*/'
-    print "comment body", t
-    t.lexer.begin('INITIAL')
-
-def t_error(t):
-    pass
-
-import sys
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_state_try.exp b/chall/ply-2.2/test/lex_state_try.exp
deleted file mode 100644
index 65f2e38..0000000
--- a/chall/ply-2.2/test/lex_state_try.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-(NUMBER,'3',1,0)
-(PLUS,'+',1,2)
-(NUMBER,'4',1,4)
-Entering comment state
-comment body LexToken(comment_body_part,'This is a comment */',1,9)
-(PLUS,'+',1,30)
-(NUMBER,'10',1,32)
diff --git a/chall/ply-2.2/test/lex_state_try.py b/chall/ply-2.2/test/lex_state_try.py
deleted file mode 100644
index a16403e..0000000
--- a/chall/ply-2.2/test/lex_state_try.py
+++ /dev/null
@@ -1,48 +0,0 @@
-# lex_state2.py
-#
-# Declaration of a state for which no rules are defined
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [ 
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-comment = 1
-states = (('comment', 'exclusive'),)
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-t_ignore = " \t"
-
-# Comments
-def t_comment(t):
-    r'/\*'
-    t.lexer.begin('comment')
-    print "Entering comment state"
-
-def t_comment_body_part(t):
-    r'(.|\n)*\*/'
-    print "comment body", t
-    t.lexer.begin('INITIAL')
-
-def t_error(t):
-    pass
-
-t_comment_error = t_error
-t_comment_ignore = t_ignore
-
-import sys
-
-lex.lex()
-
-data = "3 + 4 /* This is a comment */ + 10"
-
-lex.runmain(data=data)
diff --git a/chall/ply-2.2/test/lex_token1.exp b/chall/ply-2.2/test/lex_token1.exp
deleted file mode 100644
index 3792831..0000000
--- a/chall/ply-2.2/test/lex_token1.exp
+++ /dev/null
@@ -1 +0,0 @@
-SyntaxError: lex: module does not define 'tokens'
diff --git a/chall/ply-2.2/test/lex_token1.py b/chall/ply-2.2/test/lex_token1.py
deleted file mode 100644
index 380c31c..0000000
--- a/chall/ply-2.2/test/lex_token1.py
+++ /dev/null
@@ -1,21 +0,0 @@
-# lex_token.py
-#
-# Tests for absence of tokens variable
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-def t_error(t):
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_token2.exp b/chall/ply-2.2/test/lex_token2.exp
deleted file mode 100644
index 3f98fe5..0000000
--- a/chall/ply-2.2/test/lex_token2.exp
+++ /dev/null
@@ -1 +0,0 @@
-SyntaxError: lex: tokens must be a list or tuple.
diff --git a/chall/ply-2.2/test/lex_token2.py b/chall/ply-2.2/test/lex_token2.py
deleted file mode 100644
index 87db8a0..0000000
--- a/chall/ply-2.2/test/lex_token2.py
+++ /dev/null
@@ -1,23 +0,0 @@
-# lex_token.py
-#
-# Tests for tokens of wrong type
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = "PLUS MINUS NUMBER"
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-def t_error(t):
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_token3.exp b/chall/ply-2.2/test/lex_token3.exp
deleted file mode 100644
index d991d3c..0000000
--- a/chall/ply-2.2/test/lex_token3.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-lex: Rule 't_MINUS' defined for an unspecified token MINUS.
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_token3.py b/chall/ply-2.2/test/lex_token3.py
deleted file mode 100644
index 27ce947..0000000
--- a/chall/ply-2.2/test/lex_token3.py
+++ /dev/null
@@ -1,27 +0,0 @@
-# lex_token.py
-#
-# tokens is right type, but is missing a token for one rule
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-def t_error(t):
-    pass
-
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_token4.exp b/chall/ply-2.2/test/lex_token4.exp
deleted file mode 100644
index 3dd88e0..0000000
--- a/chall/ply-2.2/test/lex_token4.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-lex: Bad token name '-'
-SyntaxError: lex: Unable to build lexer.
diff --git a/chall/ply-2.2/test/lex_token4.py b/chall/ply-2.2/test/lex_token4.py
deleted file mode 100644
index 612ff13..0000000
--- a/chall/ply-2.2/test/lex_token4.py
+++ /dev/null
@@ -1,28 +0,0 @@
-# lex_token.py
-#
-# Bad token name
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "-",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-t_NUMBER = r'\d+'
-
-def t_error(t):
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-
-
diff --git a/chall/ply-2.2/test/lex_token5.exp b/chall/ply-2.2/test/lex_token5.exp
deleted file mode 100644
index 2f03889..0000000
--- a/chall/ply-2.2/test/lex_token5.exp
+++ /dev/null
@@ -1 +0,0 @@
-ply.lex.LexError: ./lex_token5.py:19: Rule 't_NUMBER' returned an unknown token type 'NUM'
diff --git a/chall/ply-2.2/test/lex_token5.py b/chall/ply-2.2/test/lex_token5.py
deleted file mode 100644
index 77fabde..0000000
--- a/chall/ply-2.2/test/lex_token5.py
+++ /dev/null
@@ -1,33 +0,0 @@
-# lex_token.py
-#
-# Return a bad token name
-
-import sys
-sys.path.insert(0,"..")
-
-import ply.lex as lex
-
-tokens = [
-    "PLUS",
-    "MINUS",
-    "NUMBER",
-    ]
-
-t_PLUS = r'\+'
-t_MINUS = r'-'
-
-def t_NUMBER(t):
-    r'\d+'
-    t.type = "NUM"
-    return t
-
-def t_error(t):
-    pass
-
-sys.tracebacklimit = 0
-
-lex.lex()
-lex.input("1234")
-t = lex.token()
-
-
diff --git a/chall/ply-2.2/test/rununit.py b/chall/ply-2.2/test/rununit.py
deleted file mode 100644
index d6b36fd..0000000
--- a/chall/ply-2.2/test/rununit.py
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/usr/bin/env python 
-'''Script to run all tests using python "unittest" module''' 
- 
-__author__ = "Miki Tebeka <miki.tebeka@zoran.com>" 
- 
-from unittest import TestCase, main, makeSuite, TestSuite 
-from os import popen, environ, remove 
-from glob import glob 
-from sys import executable, argv 
-from os.path import isfile, basename, splitext 
- 
-# Add path to lex.py and yacc.py 
-environ["PYTHONPATH"] = ".." 
- 
-class PLYTest(TestCase): 
-    '''General test case for PLY test''' 
-    def _runtest(self, filename): 
-        '''Run a single test file an compare result''' 
-        exp_file = filename.replace(".py", ".exp") 
-        self.failUnless(isfile(exp_file), "can't find %s" % exp_file) 
-        pipe = popen("%s %s 2>&1" % (executable, filename)) 
-        out = pipe.read().strip() 
-        self.failUnlessEqual(out, open(exp_file).read().strip()) 
- 
- 
-class LexText(PLYTest): 
-    '''Testing Lex''' 
-    pass 
- 
-class YaccTest(PLYTest): 
-    '''Testing Yacc''' 
- 
-    def tearDown(self): 
-        '''Cleanup parsetab.py[c] file''' 
-        for ext in (".py", ".pyc"): 
-            fname = "parsetab%s" % ext 
-            if isfile(fname): 
-                remove(fname) 
- 
-def add_test(klass, filename): 
-    '''Add a test to TestCase class''' 
-    def t(self): 
-        self._runtest(filename) 
-    # Test name is test_FILENAME without the ./ and without the .py 
-    setattr(klass, "test_%s" % (splitext(basename(filename))[0]), t) 
-
-# Add lex tests 
-for file in glob("./lex_*.py"): 
-    add_test(LexText, file) 
-lex_suite = makeSuite(LexText, "test_") 
- 
-# Add yacc tests 
-for file in glob("./yacc_*.py"): 
-    add_test(YaccTest, file) 
-yacc_suite = makeSuite(YaccTest, "test_") 
- 
-# All tests suite 
-test_suite = TestSuite((lex_suite, yacc_suite)) 
- 
-if __name__ == "__main__": 
-    main() 
- 
diff --git a/chall/ply-2.2/test/testlex.py b/chall/ply-2.2/test/testlex.py
deleted file mode 100755
index 2dae47a..0000000
--- a/chall/ply-2.2/test/testlex.py
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/usr/local/bin
-# ----------------------------------------------------------------------
-# testlex.py
-#
-# Run tests for the lexing module
-# ----------------------------------------------------------------------
-
-import sys,os,glob
-
-if len(sys.argv) < 2:
-    print "Usage: python testlex.py directory"
-    raise SystemExit
-
-dirname = None
-make = 0
-
-for o in sys.argv[1:]:
-    if o == '-make':
-        make = 1
-    else:
-        dirname = o
-        break
-
-if not dirname:
-    print "Usage: python testlex.py [-make] directory"
-    raise SystemExit
-
-f = glob.glob("%s/%s" % (dirname,"lex_*.py"))
-
-print "**** Running tests for lex ****"
-
-for t in f:
-    name = t[:-3]
-    print "Testing %-32s" % name,
-    if make:
-        if not os.path.exists("%s.exp" % name):
-            os.system("python %s.py >%s.exp 2>&1" % (name,name))
-        passed = 1
-    else:
-        os.system("python %s.py >%s.out 2>&1" % (name,name))
-        a = os.system("diff %s.out %s.exp >%s.dif" % (name,name,name))
-        if a == 0:
-            passed = 1
-        else:
-            passed = 0
-
-    if passed:
-        print "Passed"
-    else:
-        print "Failed. See %s.dif" % name
-        
-        
-                      
-
-    
-        
-    
diff --git a/chall/ply-2.2/test/testyacc.py b/chall/ply-2.2/test/testyacc.py
deleted file mode 100644
index f976ff5..0000000
--- a/chall/ply-2.2/test/testyacc.py
+++ /dev/null
@@ -1,58 +0,0 @@
-#!/usr/local/bin
-# ----------------------------------------------------------------------
-# testyacc.py
-#
-# Run tests for the yacc module
-# ----------------------------------------------------------------------
-
-import sys,os,glob
-
-if len(sys.argv) < 2:
-    print "Usage: python testyacc.py directory"
-    raise SystemExit
-
-dirname = None
-make = 0
-
-for o in sys.argv[1:]:
-    if o == '-make':
-        make = 1
-    else:
-        dirname = o
-        break
-
-if not dirname:
-    print "Usage: python testyacc.py [-make] directory"
-    raise SystemExit
-
-f = glob.glob("%s/%s" % (dirname,"yacc_*.py"))
-
-print "**** Running tests for yacc ****"
-
-for t in f:
-    name = t[:-3]
-    print "Testing %-32s" % name,
-    os.system("rm -f %s/parsetab.*" % dirname)
-    if make:
-        if not os.path.exists("%s.exp" % name):
-            os.system("python %s.py >%s.exp 2>&1" % (name,name))
-        passed = 1
-    else:
-        os.system("python %s.py >%s.out 2>&1" % (name,name))
-        a = os.system("diff %s.out %s.exp >%s.dif" % (name,name,name))
-        if a == 0:
-            passed = 1
-        else:
-            passed = 0
-
-    if passed:
-        print "Passed"
-    else:
-        print "Failed. See %s.dif" % name
-        
-        
-                      
-
-    
-        
-    
diff --git a/chall/ply-2.2/test/yacc_badargs.exp b/chall/ply-2.2/test/yacc_badargs.exp
deleted file mode 100644
index e994676..0000000
--- a/chall/ply-2.2/test/yacc_badargs.exp
+++ /dev/null
@@ -1,3 +0,0 @@
-./yacc_badargs.py:23: Rule 'p_statement_assign' has too many arguments.
-./yacc_badargs.py:27: Rule 'p_statement_expr' requires an argument.
-ply.yacc.YaccError: Unable to construct parser.
diff --git a/chall/ply-2.2/test/yacc_badargs.py b/chall/ply-2.2/test/yacc_badargs.py
deleted file mode 100644
index 810e529..0000000
--- a/chall/ply-2.2/test/yacc_badargs.py
+++ /dev/null
@@ -1,68 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_badargs.py
-#
-# Rules with wrong # args
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t,s):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr():
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_badprec.exp b/chall/ply-2.2/test/yacc_badprec.exp
deleted file mode 100644
index f4f574b..0000000
--- a/chall/ply-2.2/test/yacc_badprec.exp
+++ /dev/null
@@ -1 +0,0 @@
-ply.yacc.YaccError: precedence must be a list or tuple.
diff --git a/chall/ply-2.2/test/yacc_badprec.py b/chall/ply-2.2/test/yacc_badprec.py
deleted file mode 100644
index 8f64652..0000000
--- a/chall/ply-2.2/test/yacc_badprec.py
+++ /dev/null
@@ -1,65 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_badprec.py
-#
-# Bad precedence specifier
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = "blah"
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_badprec2.exp b/chall/ply-2.2/test/yacc_badprec2.exp
deleted file mode 100644
index 8fac075..0000000
--- a/chall/ply-2.2/test/yacc_badprec2.exp
+++ /dev/null
@@ -1,3 +0,0 @@
-yacc: Invalid precedence table.
-yacc: Generating LALR parsing table...
-yacc: 8 shift/reduce conflicts
diff --git a/chall/ply-2.2/test/yacc_badprec2.py b/chall/ply-2.2/test/yacc_badprec2.py
deleted file mode 100644
index 206bda7..0000000
--- a/chall/ply-2.2/test/yacc_badprec2.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_badprec2.py
-#
-# Bad precedence
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    42,
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_badrule.exp b/chall/ply-2.2/test/yacc_badrule.exp
deleted file mode 100644
index a87bf7d..0000000
--- a/chall/ply-2.2/test/yacc_badrule.exp
+++ /dev/null
@@ -1,5 +0,0 @@
-./yacc_badrule.py:25: Syntax error. Expected ':'
-./yacc_badrule.py:29: Syntax error in rule 'statement'
-./yacc_badrule.py:34: Syntax error. Expected ':'
-./yacc_badrule.py:43: Syntax error. Expected ':'
-ply.yacc.YaccError: Unable to construct parser.
diff --git a/chall/ply-2.2/test/yacc_badrule.py b/chall/ply-2.2/test/yacc_badrule.py
deleted file mode 100644
index f5fef8a..0000000
--- a/chall/ply-2.2/test/yacc_badrule.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_badrule.py
-#
-# Syntax problems in the rule strings
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                   expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression: MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_badtok.exp b/chall/ply-2.2/test/yacc_badtok.exp
deleted file mode 100644
index ccdc0e7..0000000
--- a/chall/ply-2.2/test/yacc_badtok.exp
+++ /dev/null
@@ -1 +0,0 @@
-ply.yacc.YaccError: tokens must be a list or tuple.
diff --git a/chall/ply-2.2/test/yacc_badtok.py b/chall/ply-2.2/test/yacc_badtok.py
deleted file mode 100644
index 4f2af51..0000000
--- a/chall/ply-2.2/test/yacc_badtok.py
+++ /dev/null
@@ -1,70 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_badtok.py
-#
-# A grammar, but tokens is a bad datatype
-# -----------------------------------------------------------------------------
-
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-tokens = "Hello"
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_dup.exp b/chall/ply-2.2/test/yacc_dup.exp
deleted file mode 100644
index fdfb210..0000000
--- a/chall/ply-2.2/test/yacc_dup.exp
+++ /dev/null
@@ -1,4 +0,0 @@
-./yacc_dup.py:28: Function p_statement redefined. Previously defined on line 24
-yacc: Warning. Token 'EQUALS' defined, but not used.
-yacc: Warning. There is 1 unused token.
-yacc: Generating LALR parsing table...
diff --git a/chall/ply-2.2/test/yacc_dup.py b/chall/ply-2.2/test/yacc_dup.py
deleted file mode 100644
index e0b683d..0000000
--- a/chall/ply-2.2/test/yacc_dup.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_dup.py
-#
-# Duplicated rule name
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_error1.exp b/chall/ply-2.2/test/yacc_error1.exp
deleted file mode 100644
index 13bed04..0000000
--- a/chall/ply-2.2/test/yacc_error1.exp
+++ /dev/null
@@ -1 +0,0 @@
-ply.yacc.YaccError: ./yacc_error1.py:62: p_error() requires 1 argument.
diff --git a/chall/ply-2.2/test/yacc_error1.py b/chall/ply-2.2/test/yacc_error1.py
deleted file mode 100644
index 2768fc1..0000000
--- a/chall/ply-2.2/test/yacc_error1.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_error1.py
-#
-# Bad p_error() function
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t,s):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_error2.exp b/chall/ply-2.2/test/yacc_error2.exp
deleted file mode 100644
index 4a7628d..0000000
--- a/chall/ply-2.2/test/yacc_error2.exp
+++ /dev/null
@@ -1 +0,0 @@
-ply.yacc.YaccError: ./yacc_error2.py:62: p_error() requires 1 argument.
diff --git a/chall/ply-2.2/test/yacc_error2.py b/chall/ply-2.2/test/yacc_error2.py
deleted file mode 100644
index 8f3a052..0000000
--- a/chall/ply-2.2/test/yacc_error2.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_error1.py
-#
-# Bad p_error() function
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error():
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_error3.exp b/chall/ply-2.2/test/yacc_error3.exp
deleted file mode 100644
index 7fca2fe..0000000
--- a/chall/ply-2.2/test/yacc_error3.exp
+++ /dev/null
@@ -1 +0,0 @@
-ply.yacc.YaccError: 'p_error' defined, but is not a function or method.
diff --git a/chall/ply-2.2/test/yacc_error3.py b/chall/ply-2.2/test/yacc_error3.py
deleted file mode 100644
index b387de5..0000000
--- a/chall/ply-2.2/test/yacc_error3.py
+++ /dev/null
@@ -1,68 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_error1.py
-#
-# Bad p_error() function
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-p_error = "blah"
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_inf.exp b/chall/ply-2.2/test/yacc_inf.exp
deleted file mode 100644
index 88cfa4a..0000000
--- a/chall/ply-2.2/test/yacc_inf.exp
+++ /dev/null
@@ -1,5 +0,0 @@
-yacc: Warning. Token 'NUMBER' defined, but not used.
-yacc: Warning. There is 1 unused token.
-yacc: Infinite recursion detected for symbol 'statement'.
-yacc: Infinite recursion detected for symbol 'expression'.
-ply.yacc.YaccError: Unable to construct parser.
diff --git a/chall/ply-2.2/test/yacc_inf.py b/chall/ply-2.2/test/yacc_inf.py
deleted file mode 100644
index 9b9aef7..0000000
--- a/chall/ply-2.2/test/yacc_inf.py
+++ /dev/null
@@ -1,57 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_inf.py
-#
-# Infinite recursion
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_missing1.exp b/chall/ply-2.2/test/yacc_missing1.exp
deleted file mode 100644
index de63d4f..0000000
--- a/chall/ply-2.2/test/yacc_missing1.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./yacc_missing1.py:25: Symbol 'location' used, but not defined as a token or a rule.
-ply.yacc.YaccError: Unable to construct parser.
diff --git a/chall/ply-2.2/test/yacc_missing1.py b/chall/ply-2.2/test/yacc_missing1.py
deleted file mode 100644
index fbc54d8..0000000
--- a/chall/ply-2.2/test/yacc_missing1.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_missing1.py
-#
-# Grammar with a missing rule
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : location EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_nodoc.exp b/chall/ply-2.2/test/yacc_nodoc.exp
deleted file mode 100644
index 889ccfc..0000000
--- a/chall/ply-2.2/test/yacc_nodoc.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./yacc_nodoc.py:28: No documentation string specified in function 'p_statement_expr'
-yacc: Generating LALR parsing table...
diff --git a/chall/ply-2.2/test/yacc_nodoc.py b/chall/ply-2.2/test/yacc_nodoc.py
deleted file mode 100644
index 4c5ab20..0000000
--- a/chall/ply-2.2/test/yacc_nodoc.py
+++ /dev/null
@@ -1,68 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_nodoc.py
-#
-# Rule with a missing doc-string
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_noerror.exp b/chall/ply-2.2/test/yacc_noerror.exp
deleted file mode 100644
index 658f907..0000000
--- a/chall/ply-2.2/test/yacc_noerror.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-yacc: Generating LALR parsing table...
-yacc: Warning. no p_error() function is defined.
diff --git a/chall/ply-2.2/test/yacc_noerror.py b/chall/ply-2.2/test/yacc_noerror.py
deleted file mode 100644
index 9c11838..0000000
--- a/chall/ply-2.2/test/yacc_noerror.py
+++ /dev/null
@@ -1,67 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_noerror.py
-#
-# No p_error() rule defined.
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_nop.exp b/chall/ply-2.2/test/yacc_nop.exp
deleted file mode 100644
index 515fff7..0000000
--- a/chall/ply-2.2/test/yacc_nop.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./yacc_nop.py:28: Warning. Possible grammar rule 'statement_expr' defined without p_ prefix.
-yacc: Generating LALR parsing table...
diff --git a/chall/ply-2.2/test/yacc_nop.py b/chall/ply-2.2/test/yacc_nop.py
deleted file mode 100644
index c0b431d..0000000
--- a/chall/ply-2.2/test/yacc_nop.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_nop.py
-#
-# Possible grammar rule defined without p_ prefix
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_notfunc.exp b/chall/ply-2.2/test/yacc_notfunc.exp
deleted file mode 100644
index f73bc93..0000000
--- a/chall/ply-2.2/test/yacc_notfunc.exp
+++ /dev/null
@@ -1,4 +0,0 @@
-yacc: Warning. 'p_statement_assign' not defined as a function
-yacc: Warning. Token 'EQUALS' defined, but not used.
-yacc: Warning. There is 1 unused token.
-yacc: Generating LALR parsing table...
diff --git a/chall/ply-2.2/test/yacc_notfunc.py b/chall/ply-2.2/test/yacc_notfunc.py
deleted file mode 100644
index 8389355..0000000
--- a/chall/ply-2.2/test/yacc_notfunc.py
+++ /dev/null
@@ -1,67 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_notfunc.py
-#
-# p_rule not defined as a function
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-p_statement_assign = "Blah"
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_notok.exp b/chall/ply-2.2/test/yacc_notok.exp
deleted file mode 100644
index d2399fe..0000000
--- a/chall/ply-2.2/test/yacc_notok.exp
+++ /dev/null
@@ -1 +0,0 @@
-ply.yacc.YaccError: module does not define a list 'tokens'
diff --git a/chall/ply-2.2/test/yacc_notok.py b/chall/ply-2.2/test/yacc_notok.py
deleted file mode 100644
index e566a1b..0000000
--- a/chall/ply-2.2/test/yacc_notok.py
+++ /dev/null
@@ -1,68 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_notok.py
-#
-# A grammar, but we forgot to import the tokens list
-# -----------------------------------------------------------------------------
-
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_rr.exp b/chall/ply-2.2/test/yacc_rr.exp
deleted file mode 100644
index f73cefd..0000000
--- a/chall/ply-2.2/test/yacc_rr.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-yacc: Generating LALR parsing table...
-yacc: 1 reduce/reduce conflict
diff --git a/chall/ply-2.2/test/yacc_rr.py b/chall/ply-2.2/test/yacc_rr.py
deleted file mode 100644
index bb8cba2..0000000
--- a/chall/ply-2.2/test/yacc_rr.py
+++ /dev/null
@@ -1,73 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_rr.py
-#
-# A grammar with a reduce/reduce conflict
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_assign_2(t):
-    'statement : NAME EQUALS NUMBER'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_simple.exp b/chall/ply-2.2/test/yacc_simple.exp
deleted file mode 100644
index 3836031..0000000
--- a/chall/ply-2.2/test/yacc_simple.exp
+++ /dev/null
@@ -1 +0,0 @@
-yacc: Generating LALR parsing table...
diff --git a/chall/ply-2.2/test/yacc_simple.py b/chall/ply-2.2/test/yacc_simple.py
deleted file mode 100644
index b5dc9f3..0000000
--- a/chall/ply-2.2/test/yacc_simple.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_simple.py
-#
-# A simple, properly specifier grammar
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_sr.exp b/chall/ply-2.2/test/yacc_sr.exp
deleted file mode 100644
index 1b76450..0000000
--- a/chall/ply-2.2/test/yacc_sr.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-yacc: Generating LALR parsing table...
-yacc: 20 shift/reduce conflicts
diff --git a/chall/ply-2.2/test/yacc_sr.py b/chall/ply-2.2/test/yacc_sr.py
deleted file mode 100644
index e2f03ec..0000000
--- a/chall/ply-2.2/test/yacc_sr.py
+++ /dev/null
@@ -1,64 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_sr.py
-#
-# A grammar with shift-reduce conflicts
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_term1.exp b/chall/ply-2.2/test/yacc_term1.exp
deleted file mode 100644
index 40f9bdf..0000000
--- a/chall/ply-2.2/test/yacc_term1.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./yacc_term1.py:25: Illegal rule name 'NUMBER'. Already defined as a token.
-ply.yacc.YaccError: Unable to construct parser.
diff --git a/chall/ply-2.2/test/yacc_term1.py b/chall/ply-2.2/test/yacc_term1.py
deleted file mode 100644
index bbc52da..0000000
--- a/chall/ply-2.2/test/yacc_term1.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_term1.py
-#
-# Terminal used on the left-hand-side
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'NUMBER : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_unused.exp b/chall/ply-2.2/test/yacc_unused.exp
deleted file mode 100644
index 6caafd2..0000000
--- a/chall/ply-2.2/test/yacc_unused.exp
+++ /dev/null
@@ -1,4 +0,0 @@
-./yacc_unused.py:63: Symbol 'COMMA' used, but not defined as a token or a rule.
-yacc: Symbol 'COMMA' is unreachable.
-yacc: Symbol 'exprlist' is unreachable.
-ply.yacc.YaccError: Unable to construct parser.
diff --git a/chall/ply-2.2/test/yacc_unused.py b/chall/ply-2.2/test/yacc_unused.py
deleted file mode 100644
index 3a61f99..0000000
--- a/chall/ply-2.2/test/yacc_unused.py
+++ /dev/null
@@ -1,78 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_unused.py
-#
-# A grammar with an unused rule
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-precedence = (
-    ('left','PLUS','MINUS'),
-    ('left','TIMES','DIVIDE'),
-    ('right','UMINUS'),
-    )
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_expr_list(t):
-    'exprlist : exprlist COMMA expression'
-    pass
-
-def p_expr_list_2(t):
-    'exprlist : expression'
-    pass
-
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/ply-2.2/test/yacc_uprec.exp b/chall/ply-2.2/test/yacc_uprec.exp
deleted file mode 100644
index eb9a398..0000000
--- a/chall/ply-2.2/test/yacc_uprec.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-./yacc_uprec.py:38: Nothing known about the precedence of 'UMINUS'
-ply.yacc.YaccError: Unable to construct parser.
diff --git a/chall/ply-2.2/test/yacc_uprec.py b/chall/ply-2.2/test/yacc_uprec.py
deleted file mode 100644
index 0e8711e..0000000
--- a/chall/ply-2.2/test/yacc_uprec.py
+++ /dev/null
@@ -1,64 +0,0 @@
-# -----------------------------------------------------------------------------
-# yacc_uprec.py
-#
-# A grammar with a bad %prec specifier
-# -----------------------------------------------------------------------------
-import sys
-sys.tracebacklimit = 0
-
-sys.path.insert(0,"..")
-import ply.yacc as yacc
-
-from calclex import tokens
-
-# Parsing rules
-
-# dictionary of names
-names = { }
-
-def p_statement_assign(t):
-    'statement : NAME EQUALS expression'
-    names[t[1]] = t[3]
-
-def p_statement_expr(t):
-    'statement : expression'
-    print t[1]
-
-def p_expression_binop(t):
-    '''expression : expression PLUS expression
-                  | expression MINUS expression
-                  | expression TIMES expression
-                  | expression DIVIDE expression'''
-    if t[2] == '+'  : t[0] = t[1] + t[3]
-    elif t[2] == '-': t[0] = t[1] - t[3]
-    elif t[2] == '*': t[0] = t[1] * t[3]
-    elif t[3] == '/': t[0] = t[1] / t[3]
-
-def p_expression_uminus(t):
-    'expression : MINUS expression %prec UMINUS'
-    t[0] = -t[2]
-
-def p_expression_group(t):
-    'expression : LPAREN expression RPAREN'
-    t[0] = t[2]
-
-def p_expression_number(t):
-    'expression : NUMBER'
-    t[0] = t[1]
-
-def p_expression_name(t):
-    'expression : NAME'
-    try:
-        t[0] = names[t[1]]
-    except LookupError:
-        print "Undefined name '%s'" % t[1]
-        t[0] = 0
-
-def p_error(t):
-    print "Syntax error at '%s'" % t.value
-
-yacc.yacc()
-
-
-
-
diff --git a/chall/src/css/bootstrap-grid.css b/chall/src/css/bootstrap-grid.css
deleted file mode 100644
index 5a71a41..0000000
--- a/chall/src/css/bootstrap-grid.css
+++ /dev/null
@@ -1,2050 +0,0 @@
-/*!
- * Bootstrap Grid v4.0.0 (https://getbootstrap.com)
- * Copyright 2011-2018 The Bootstrap Authors
- * Copyright 2011-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-@-ms-viewport {
-  width: device-width;
-}
-
-html {
-  box-sizing: border-box;
-  -ms-overflow-style: scrollbar;
-}
-
-*,
-*::before,
-*::after {
-  box-sizing: inherit;
-}
-
-.container {
-  width: 100%;
-  padding-right: 15px;
-  padding-left: 15px;
-  margin-right: auto;
-  margin-left: auto;
-}
-
-@media (min-width: 576px) {
-  .container {
-    max-width: 540px;
-  }
-}
-
-@media (min-width: 768px) {
-  .container {
-    max-width: 720px;
-  }
-}
-
-@media (min-width: 992px) {
-  .container {
-    max-width: 960px;
-  }
-}
-
-@media (min-width: 1200px) {
-  .container {
-    max-width: 1140px;
-  }
-}
-
-.container-fluid {
-  width: 100%;
-  padding-right: 15px;
-  padding-left: 15px;
-  margin-right: auto;
-  margin-left: auto;
-}
-
-.row {
-  display: -webkit-box;
-  display: -ms-flexbox;
-  display: flex;
-  -ms-flex-wrap: wrap;
-  flex-wrap: wrap;
-  margin-right: -15px;
-  margin-left: -15px;
-}
-
-.no-gutters {
-  margin-right: 0;
-  margin-left: 0;
-}
-
-.no-gutters > .col,
-.no-gutters > [class*="col-"] {
-  padding-right: 0;
-  padding-left: 0;
-}
-
-.col-1, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11, .col-12, .col,
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-/*# sourceMappingURL=bootstrap-grid.css.map */
\ No newline at end of file
diff --git a/chall/src/css/bootstrap-grid.min.css b/chall/src/css/bootstrap-grid.min.css
deleted file mode 100644
index ea073e9..0000000
--- a/chall/src/css/bootstrap-grid.min.css
+++ /dev/null
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-/*# sourceMappingURL=bootstrap-grid.min.css.map */
\ No newline at end of file
diff --git a/chall/src/css/bootstrap-reboot.css b/chall/src/css/bootstrap-reboot.css
deleted file mode 100644
index 5a75a62..0000000
--- a/chall/src/css/bootstrap-reboot.css
+++ /dev/null
@@ -1,330 +0,0 @@
-/*!
- * Bootstrap Reboot v4.0.0 (https://getbootstrap.com)
- * Copyright 2011-2018 The Bootstrap Authors
- * Copyright 2011-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
- */
-*,
-*::before,
-*::after {
-  box-sizing: border-box;
-}
-
-html {
-  font-family: sans-serif;
-  line-height: 1.15;
-  -webkit-text-size-adjust: 100%;
-  -ms-text-size-adjust: 100%;
-  -ms-overflow-style: scrollbar;
-  -webkit-tap-highlight-color: transparent;
-}
-
-@-ms-viewport {
-  width: device-width;
-}
-
-article, aside, dialog, figcaption, figure, footer, header, hgroup, main, nav, section {
-  display: block;
-}
-
-body {
-  margin: 0;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
-  font-size: 1rem;
-  font-weight: 400;
-  line-height: 1.5;
-  color: #212529;
-  text-align: left;
-  background-color: #fff;
-}
-
-[tabindex="-1"]:focus {
-  outline: 0 !important;
-}
-
-hr {
-  box-sizing: content-box;
-  height: 0;
-  overflow: visible;
-}
-
-h1, h2, h3, h4, h5, h6 {
-  margin-top: 0;
-  margin-bottom: 0.5rem;
-}
-
-p {
-  margin-top: 0;
-  margin-bottom: 1rem;
-}
-
-abbr[title],
-abbr[data-original-title] {
-  text-decoration: underline;
-  -webkit-text-decoration: underline dotted;
-  text-decoration: underline dotted;
-  cursor: help;
-  border-bottom: 0;
-}
-
-address {
-  margin-bottom: 1rem;
-  font-style: normal;
-  line-height: inherit;
-}
-
-ol,
-ul,
-dl {
-  margin-top: 0;
-  margin-bottom: 1rem;
-}
-
-ol ol,
-ul ul,
-ol ul,
-ul ol {
-  margin-bottom: 0;
-}
-
-dt {
-  font-weight: 700;
-}
-
-dd {
-  margin-bottom: .5rem;
-  margin-left: 0;
-}
-
-blockquote {
-  margin: 0 0 1rem;
-}
-
-dfn {
-  font-style: italic;
-}
-
-b,
-strong {
-  font-weight: bolder;
-}
-
-small {
-  font-size: 80%;
-}
-
-sub,
-sup {
-  position: relative;
-  font-size: 75%;
-  line-height: 0;
-  vertical-align: baseline;
-}
-
-sub {
-  bottom: -.25em;
-}
-
-sup {
-  top: -.5em;
-}
-
-a {
-  color: #007bff;
-  text-decoration: none;
-  background-color: transparent;
-  -webkit-text-decoration-skip: objects;
-}
-
-a:hover {
-  color: #0056b3;
-  text-decoration: underline;
-}
-
-a:not([href]):not([tabindex]) {
-  color: inherit;
-  text-decoration: none;
-}
-
-a:not([href]):not([tabindex]):hover, a:not([href]):not([tabindex]):focus {
-  color: inherit;
-  text-decoration: none;
-}
-
-a:not([href]):not([tabindex]):focus {
-  outline: 0;
-}
-
-pre,
-code,
-kbd,
-samp {
-  font-family: monospace, monospace;
-  font-size: 1em;
-}
-
-pre {
-  margin-top: 0;
-  margin-bottom: 1rem;
-  overflow: auto;
-  -ms-overflow-style: scrollbar;
-}
-
-figure {
-  margin: 0 0 1rem;
-}
-
-img {
-  vertical-align: middle;
-  border-style: none;
-}
-
-svg:not(:root) {
-  overflow: hidden;
-}
-
-table {
-  border-collapse: collapse;
-}
-
-caption {
-  padding-top: 0.75rem;
-  padding-bottom: 0.75rem;
-  color: #6c757d;
-  text-align: left;
-  caption-side: bottom;
-}
-
-th {
-  text-align: inherit;
-}
-
-label {
-  display: inline-block;
-  margin-bottom: .5rem;
-}
-
-button {
-  border-radius: 0;
-}
-
-button:focus {
-  outline: 1px dotted;
-  outline: 5px auto -webkit-focus-ring-color;
-}
-
-input,
-button,
-select,
-optgroup,
-textarea {
-  margin: 0;
-  font-family: inherit;
-  font-size: inherit;
-  line-height: inherit;
-}
-
-button,
-input {
-  overflow: visible;
-}
-
-button,
-select {
-  text-transform: none;
-}
-
-button,
-html [type="button"],
-[type="reset"],
-[type="submit"] {
-  -webkit-appearance: button;
-}
-
-button::-moz-focus-inner,
-[type="button"]::-moz-focus-inner,
-[type="reset"]::-moz-focus-inner,
-[type="submit"]::-moz-focus-inner {
-  padding: 0;
-  border-style: none;
-}
-
-input[type="radio"],
-input[type="checkbox"] {
-  box-sizing: border-box;
-  padding: 0;
-}
-
-input[type="date"],
-input[type="time"],
-input[type="datetime-local"],
-input[type="month"] {
-  -webkit-appearance: listbox;
-}
-
-textarea {
-  overflow: auto;
-  resize: vertical;
-}
-
-fieldset {
-  min-width: 0;
-  padding: 0;
-  margin: 0;
-  border: 0;
-}
-
-legend {
-  display: block;
-  width: 100%;
-  max-width: 100%;
-  padding: 0;
-  margin-bottom: .5rem;
-  font-size: 1.5rem;
-  line-height: inherit;
-  color: inherit;
-  white-space: normal;
-}
-
-progress {
-  vertical-align: baseline;
-}
-
-[type="number"]::-webkit-inner-spin-button,
-[type="number"]::-webkit-outer-spin-button {
-  height: auto;
-}
-
-[type="search"] {
-  outline-offset: -2px;
-  -webkit-appearance: none;
-}
-
-[type="search"]::-webkit-search-cancel-button,
-[type="search"]::-webkit-search-decoration {
-  -webkit-appearance: none;
-}
-
-::-webkit-file-upload-button {
-  font: inherit;
-  -webkit-appearance: button;
-}
-
-output {
-  display: inline-block;
-}
-
-summary {
-  display: list-item;
-  cursor: pointer;
-}
-
-template {
-  display: none;
-}
-
-[hidden] {
-  display: none !important;
-}
-/*# sourceMappingURL=bootstrap-reboot.css.map */
\ No newline at end of file
diff --git a/chall/src/css/bootstrap-reboot.min.css b/chall/src/css/bootstrap-reboot.min.css
deleted file mode 100644
index ced0468..0000000
--- a/chall/src/css/bootstrap-reboot.min.css
+++ /dev/null
@@ -1,8 +0,0 @@
-/*!
- * Bootstrap Reboot v4.0.0 (https://getbootstrap.com)
- * Copyright 2011-2018 The Bootstrap Authors
- * Copyright 2011-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
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diff --git a/chall/src/css/bootstrap.css b/chall/src/css/bootstrap.css
deleted file mode 100644
index aa49713..0000000
--- a/chall/src/css/bootstrap.css
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-  .pl-sm-3,
-  .px-sm-3 {
-    padding-left: 1rem !important;
-  }
-  .p-sm-4 {
-    padding: 1.5rem !important;
-  }
-  .pt-sm-4,
-  .py-sm-4 {
-    padding-top: 1.5rem !important;
-  }
-  .pr-sm-4,
-  .px-sm-4 {
-    padding-right: 1.5rem !important;
-  }
-  .pb-sm-4,
-  .py-sm-4 {
-    padding-bottom: 1.5rem !important;
-  }
-  .pl-sm-4,
-  .px-sm-4 {
-    padding-left: 1.5rem !important;
-  }
-  .p-sm-5 {
-    padding: 3rem !important;
-  }
-  .pt-sm-5,
-  .py-sm-5 {
-    padding-top: 3rem !important;
-  }
-  .pr-sm-5,
-  .px-sm-5 {
-    padding-right: 3rem !important;
-  }
-  .pb-sm-5,
-  .py-sm-5 {
-    padding-bottom: 3rem !important;
-  }
-  .pl-sm-5,
-  .px-sm-5 {
-    padding-left: 3rem !important;
-  }
-  .m-sm-auto {
-    margin: auto !important;
-  }
-  .mt-sm-auto,
-  .my-sm-auto {
-    margin-top: auto !important;
-  }
-  .mr-sm-auto,
-  .mx-sm-auto {
-    margin-right: auto !important;
-  }
-  .mb-sm-auto,
-  .my-sm-auto {
-    margin-bottom: auto !important;
-  }
-  .ml-sm-auto,
-  .mx-sm-auto {
-    margin-left: auto !important;
-  }
-}
-
-@media (min-width: 768px) {
-  .m-md-0 {
-    margin: 0 !important;
-  }
-  .mt-md-0,
-  .my-md-0 {
-    margin-top: 0 !important;
-  }
-  .mr-md-0,
-  .mx-md-0 {
-    margin-right: 0 !important;
-  }
-  .mb-md-0,
-  .my-md-0 {
-    margin-bottom: 0 !important;
-  }
-  .ml-md-0,
-  .mx-md-0 {
-    margin-left: 0 !important;
-  }
-  .m-md-1 {
-    margin: 0.25rem !important;
-  }
-  .mt-md-1,
-  .my-md-1 {
-    margin-top: 0.25rem !important;
-  }
-  .mr-md-1,
-  .mx-md-1 {
-    margin-right: 0.25rem !important;
-  }
-  .mb-md-1,
-  .my-md-1 {
-    margin-bottom: 0.25rem !important;
-  }
-  .ml-md-1,
-  .mx-md-1 {
-    margin-left: 0.25rem !important;
-  }
-  .m-md-2 {
-    margin: 0.5rem !important;
-  }
-  .mt-md-2,
-  .my-md-2 {
-    margin-top: 0.5rem !important;
-  }
-  .mr-md-2,
-  .mx-md-2 {
-    margin-right: 0.5rem !important;
-  }
-  .mb-md-2,
-  .my-md-2 {
-    margin-bottom: 0.5rem !important;
-  }
-  .ml-md-2,
-  .mx-md-2 {
-    margin-left: 0.5rem !important;
-  }
-  .m-md-3 {
-    margin: 1rem !important;
-  }
-  .mt-md-3,
-  .my-md-3 {
-    margin-top: 1rem !important;
-  }
-  .mr-md-3,
-  .mx-md-3 {
-    margin-right: 1rem !important;
-  }
-  .mb-md-3,
-  .my-md-3 {
-    margin-bottom: 1rem !important;
-  }
-  .ml-md-3,
-  .mx-md-3 {
-    margin-left: 1rem !important;
-  }
-  .m-md-4 {
-    margin: 1.5rem !important;
-  }
-  .mt-md-4,
-  .my-md-4 {
-    margin-top: 1.5rem !important;
-  }
-  .mr-md-4,
-  .mx-md-4 {
-    margin-right: 1.5rem !important;
-  }
-  .mb-md-4,
-  .my-md-4 {
-    margin-bottom: 1.5rem !important;
-  }
-  .ml-md-4,
-  .mx-md-4 {
-    margin-left: 1.5rem !important;
-  }
-  .m-md-5 {
-    margin: 3rem !important;
-  }
-  .mt-md-5,
-  .my-md-5 {
-    margin-top: 3rem !important;
-  }
-  .mr-md-5,
-  .mx-md-5 {
-    margin-right: 3rem !important;
-  }
-  .mb-md-5,
-  .my-md-5 {
-    margin-bottom: 3rem !important;
-  }
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-  .mx-md-5 {
-    margin-left: 3rem !important;
-  }
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-    padding: 0 !important;
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-  .py-md-0 {
-    padding-top: 0 !important;
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-    padding-right: 0 !important;
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-  }
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-    padding-left: 0 !important;
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-    padding: 0.25rem !important;
-  }
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-  .py-md-1 {
-    padding-top: 0.25rem !important;
-  }
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index b3cc3da..0000000
--- a/chall/src/form.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<div class="jumbotron">
-  <div class="container custom-container">
-    <h1>LOLPython</h1>
-    <p>You finally landed on the mainframe and are soooo close to hack the world! But what is this? A <a href="http://www.dalkescientific.com/writings/diary/archive/2007/06/01/lolpython.html">LOLPython</a> interpreter in production?
-     Googling quickly reveals: Thats <a href="https://esolangs.org/wiki/Language_list">one of many esolangs</a> with hacker and l33t speak. Sounds cool, right?</p>
-    <p>Though, to solve this challenge, you have to take it to the next level: Not only code a program in this weird language, but escape the interpreter and execute the final payload. Go exploit it!</p>
-  </div>
-</div>
-<div class="container">
-  <main role="main">
-  <form>
-    <p>Type your LOLPython code here. We'll execute your file and you'll get the result</p>
-    <textarea placeholder="VISIBLE 'HAI WORLD!'" id="in">
-</textarea>
-    <input type="button" value="Transpile and Run!" id="rock-button" onclick="transpile();">
-
-    <br>
-    <p>Output:</p>
-    <textarea id="output"></textarea>
-    </form>
-  </main>
-
-</div>
-<br><br>
\ No newline at end of file
diff --git a/chall/src/index.php b/chall/src/index.php
deleted file mode 100644
index c0ead91..0000000
--- a/chall/src/index.php
+++ /dev/null
@@ -1,58 +0,0 @@
-<?php
-session_start();
-
-function generateRandomString($length = 24)
-{
-  $characters = '0123456789abcdefghijklmnopqrstuvwxyz';
-  $charactersLength = strlen($characters);
-  $randomString = '';
-  for ($i = 0; $i < $length; $i++) {
-    $randomString .= $characters[rand(0, $charactersLength - 1)];
-  }
-  return $randomString;
-}
-
-if (!isset($_SESSION['userid'])) {
-  $_SESSION['userid'] = generateRandomString();
-}
-?>
-
-<!doctype html>
-<html lang="en">
-
-<head>
-  <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
-  <meta name="description" content="">
-  <meta name="author" content="">
-  <link rel="icon" href="favicon.ico">
-
-  <title>LOLPython Transpiler Service</title>
-
-  <!-- Bootstrap core CSS -->
-  <link href="css/bootstrap.min.css" rel="stylesheet">
-
-  <link href="css/custom.css" rel="stylesheet">
-
-</head>
-
-<body>
-  <!-- Main jumbotron for a primary marketing message or call to action -->
- <?php include("form.php") ?>
-  <footer class="container">
-    <p>&copy; LOLPython Transpiler Service 2024</p>
-  </footer>
-
-  <!-- Bootstrap core JavaScript
-    ================================================== -->
-  <!-- Placed at the end of the document so the pages load faster -->
-  <script
-  src="https://code.jquery.com/jquery-3.5.1.min.js"
-  integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0="
-  crossorigin="anonymous"></script>
-  <script src="js/vendor/popper.min.js"></script>
-  <script src="js/bootstrap.min.js"></script>
-  <script src="js/rockstar.js"></script>
-</body>
-
-</html>
\ No newline at end of file
diff --git a/chall/src/js/bootstrap.bundle.js b/chall/src/js/bootstrap.bundle.js
deleted file mode 100644
index 45b357d..0000000
--- a/chall/src/js/bootstrap.bundle.js
+++ /dev/null
@@ -1,6328 +0,0 @@
-/*!
-  * Bootstrap v4.0.0 (https://getbootstrap.com)
-  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
-  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
-  */
-(function (global, factory) {
-	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('jquery')) :
-	typeof define === 'function' && define.amd ? define(['exports', 'jquery'], factory) :
-	(factory((global.bootstrap = {}),global.jQuery));
-}(this, (function (exports,$) { 'use strict';
-
-$ = $ && $.hasOwnProperty('default') ? $['default'] : $;
-
-function _defineProperties(target, props) {
-  for (var i = 0; i < props.length; i++) {
-    var descriptor = props[i];
-    descriptor.enumerable = descriptor.enumerable || false;
-    descriptor.configurable = true;
-    if ("value" in descriptor) descriptor.writable = true;
-    Object.defineProperty(target, descriptor.key, descriptor);
-  }
-}
-
-function _createClass(Constructor, protoProps, staticProps) {
-  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
-  if (staticProps) _defineProperties(Constructor, staticProps);
-  return Constructor;
-}
-
-function _extends() {
-  _extends = Object.assign || function (target) {
-    for (var i = 1; i < arguments.length; i++) {
-      var source = arguments[i];
-
-      for (var key in source) {
-        if (Object.prototype.hasOwnProperty.call(source, key)) {
-          target[key] = source[key];
-        }
-      }
-    }
-
-    return target;
-  };
-
-  return _extends.apply(this, arguments);
-}
-
-function _inheritsLoose(subClass, superClass) {
-  subClass.prototype = Object.create(superClass.prototype);
-  subClass.prototype.constructor = subClass;
-  subClass.__proto__ = superClass;
-}
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): util.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Util = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Private TransitionEnd Helpers
-   * ------------------------------------------------------------------------
-   */
-  var transition = false;
-  var MAX_UID = 1000000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
-
-  function toType(obj) {
-    return {}.toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase();
-  }
-
-  function getSpecialTransitionEndEvent() {
-    return {
-      bindType: transition.end,
-      delegateType: transition.end,
-      handle: function handle(event) {
-        if ($$$1(event.target).is(this)) {
-          return event.handleObj.handler.apply(this, arguments); // eslint-disable-line prefer-rest-params
-        }
-
-        return undefined; // eslint-disable-line no-undefined
-      }
-    };
-  }
-
-  function transitionEndTest() {
-    if (typeof window !== 'undefined' && window.QUnit) {
-      return false;
-    }
-
-    return {
-      end: 'transitionend'
-    };
-  }
-
-  function transitionEndEmulator(duration) {
-    var _this = this;
-
-    var called = false;
-    $$$1(this).one(Util.TRANSITION_END, function () {
-      called = true;
-    });
-    setTimeout(function () {
-      if (!called) {
-        Util.triggerTransitionEnd(_this);
-      }
-    }, duration);
-    return this;
-  }
-
-  function setTransitionEndSupport() {
-    transition = transitionEndTest();
-    $$$1.fn.emulateTransitionEnd = transitionEndEmulator;
-
-    if (Util.supportsTransitionEnd()) {
-      $$$1.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent();
-    }
-  }
-
-  function escapeId(selector) {
-    // We escape IDs in case of special selectors (selector = '#myId:something')
-    // $.escapeSelector does not exist in jQuery < 3
-    selector = typeof $$$1.escapeSelector === 'function' ? $$$1.escapeSelector(selector).substr(1) : selector.replace(/(:|\.|\[|\]|,|=|@)/g, '\\$1');
-    return selector;
-  }
-  /**
-   * --------------------------------------------------------------------------
-   * Public Util Api
-   * --------------------------------------------------------------------------
-   */
-
-
-  var Util = {
-    TRANSITION_END: 'bsTransitionEnd',
-    getUID: function getUID(prefix) {
-      do {
-        // eslint-disable-next-line no-bitwise
-        prefix += ~~(Math.random() * MAX_UID); // "~~" acts like a faster Math.floor() here
-      } while (document.getElementById(prefix));
-
-      return prefix;
-    },
-    getSelectorFromElement: function getSelectorFromElement(element) {
-      var selector = element.getAttribute('data-target');
-
-      if (!selector || selector === '#') {
-        selector = element.getAttribute('href') || '';
-      } // If it's an ID
-
-
-      if (selector.charAt(0) === '#') {
-        selector = escapeId(selector);
-      }
-
-      try {
-        var $selector = $$$1(document).find(selector);
-        return $selector.length > 0 ? selector : null;
-      } catch (err) {
-        return null;
-      }
-    },
-    reflow: function reflow(element) {
-      return element.offsetHeight;
-    },
-    triggerTransitionEnd: function triggerTransitionEnd(element) {
-      $$$1(element).trigger(transition.end);
-    },
-    supportsTransitionEnd: function supportsTransitionEnd() {
-      return Boolean(transition);
-    },
-    isElement: function isElement(obj) {
-      return (obj[0] || obj).nodeType;
-    },
-    typeCheckConfig: function typeCheckConfig(componentName, config, configTypes) {
-      for (var property in configTypes) {
-        if (Object.prototype.hasOwnProperty.call(configTypes, property)) {
-          var expectedTypes = configTypes[property];
-          var value = config[property];
-          var valueType = value && Util.isElement(value) ? 'element' : toType(value);
-
-          if (!new RegExp(expectedTypes).test(valueType)) {
-            throw new Error(componentName.toUpperCase() + ": " + ("Option \"" + property + "\" provided type \"" + valueType + "\" ") + ("but expected type \"" + expectedTypes + "\"."));
-          }
-        }
-      }
-    }
-  };
-  setTransitionEndSupport();
-  return Util;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): alert.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Alert = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'alert';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.alert';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 150;
-  var Selector = {
-    DISMISS: '[data-dismiss="alert"]'
-  };
-  var Event = {
-    CLOSE: "close" + EVENT_KEY,
-    CLOSED: "closed" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    ALERT: 'alert',
-    FADE: 'fade',
-    SHOW: 'show'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Alert =
-  /*#__PURE__*/
-  function () {
-    function Alert(element) {
-      this._element = element;
-    } // Getters
-
-
-    var _proto = Alert.prototype;
-
-    // Public
-    _proto.close = function close(element) {
-      element = element || this._element;
-
-      var rootElement = this._getRootElement(element);
-
-      var customEvent = this._triggerCloseEvent(rootElement);
-
-      if (customEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      this._removeElement(rootElement);
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      this._element = null;
-    }; // Private
-
-
-    _proto._getRootElement = function _getRootElement(element) {
-      var selector = Util.getSelectorFromElement(element);
-      var parent = false;
-
-      if (selector) {
-        parent = $$$1(selector)[0];
-      }
-
-      if (!parent) {
-        parent = $$$1(element).closest("." + ClassName.ALERT)[0];
-      }
-
-      return parent;
-    };
-
-    _proto._triggerCloseEvent = function _triggerCloseEvent(element) {
-      var closeEvent = $$$1.Event(Event.CLOSE);
-      $$$1(element).trigger(closeEvent);
-      return closeEvent;
-    };
-
-    _proto._removeElement = function _removeElement(element) {
-      var _this = this;
-
-      $$$1(element).removeClass(ClassName.SHOW);
-
-      if (!Util.supportsTransitionEnd() || !$$$1(element).hasClass(ClassName.FADE)) {
-        this._destroyElement(element);
-
-        return;
-      }
-
-      $$$1(element).one(Util.TRANSITION_END, function (event) {
-        return _this._destroyElement(element, event);
-      }).emulateTransitionEnd(TRANSITION_DURATION);
-    };
-
-    _proto._destroyElement = function _destroyElement(element) {
-      $$$1(element).detach().trigger(Event.CLOSED).remove();
-    }; // Static
-
-
-    Alert._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var $element = $$$1(this);
-        var data = $element.data(DATA_KEY);
-
-        if (!data) {
-          data = new Alert(this);
-          $element.data(DATA_KEY, data);
-        }
-
-        if (config === 'close') {
-          data[config](this);
-        }
-      });
-    };
-
-    Alert._handleDismiss = function _handleDismiss(alertInstance) {
-      return function (event) {
-        if (event) {
-          event.preventDefault();
-        }
-
-        alertInstance.close(this);
-      };
-    };
-
-    _createClass(Alert, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }]);
-    return Alert;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DISMISS, Alert._handleDismiss(new Alert()));
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Alert._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Alert;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Alert._jQueryInterface;
-  };
-
-  return Alert;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): button.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Button = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'button';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.button';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var ClassName = {
-    ACTIVE: 'active',
-    BUTTON: 'btn',
-    FOCUS: 'focus'
-  };
-  var Selector = {
-    DATA_TOGGLE_CARROT: '[data-toggle^="button"]',
-    DATA_TOGGLE: '[data-toggle="buttons"]',
-    INPUT: 'input',
-    ACTIVE: '.active',
-    BUTTON: '.btn'
-  };
-  var Event = {
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY,
-    FOCUS_BLUR_DATA_API: "focus" + EVENT_KEY + DATA_API_KEY + " " + ("blur" + EVENT_KEY + DATA_API_KEY)
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Button =
-  /*#__PURE__*/
-  function () {
-    function Button(element) {
-      this._element = element;
-    } // Getters
-
-
-    var _proto = Button.prototype;
-
-    // Public
-    _proto.toggle = function toggle() {
-      var triggerChangeEvent = true;
-      var addAriaPressed = true;
-      var rootElement = $$$1(this._element).closest(Selector.DATA_TOGGLE)[0];
-
-      if (rootElement) {
-        var input = $$$1(this._element).find(Selector.INPUT)[0];
-
-        if (input) {
-          if (input.type === 'radio') {
-            if (input.checked && $$$1(this._element).hasClass(ClassName.ACTIVE)) {
-              triggerChangeEvent = false;
-            } else {
-              var activeElement = $$$1(rootElement).find(Selector.ACTIVE)[0];
-
-              if (activeElement) {
-                $$$1(activeElement).removeClass(ClassName.ACTIVE);
-              }
-            }
-          }
-
-          if (triggerChangeEvent) {
-            if (input.hasAttribute('disabled') || rootElement.hasAttribute('disabled') || input.classList.contains('disabled') || rootElement.classList.contains('disabled')) {
-              return;
-            }
-
-            input.checked = !$$$1(this._element).hasClass(ClassName.ACTIVE);
-            $$$1(input).trigger('change');
-          }
-
-          input.focus();
-          addAriaPressed = false;
-        }
-      }
-
-      if (addAriaPressed) {
-        this._element.setAttribute('aria-pressed', !$$$1(this._element).hasClass(ClassName.ACTIVE));
-      }
-
-      if (triggerChangeEvent) {
-        $$$1(this._element).toggleClass(ClassName.ACTIVE);
-      }
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      this._element = null;
-    }; // Static
-
-
-    Button._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        if (!data) {
-          data = new Button(this);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (config === 'toggle') {
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Button, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }]);
-    return Button;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE_CARROT, function (event) {
-    event.preventDefault();
-    var button = event.target;
-
-    if (!$$$1(button).hasClass(ClassName.BUTTON)) {
-      button = $$$1(button).closest(Selector.BUTTON);
-    }
-
-    Button._jQueryInterface.call($$$1(button), 'toggle');
-  }).on(Event.FOCUS_BLUR_DATA_API, Selector.DATA_TOGGLE_CARROT, function (event) {
-    var button = $$$1(event.target).closest(Selector.BUTTON)[0];
-    $$$1(button).toggleClass(ClassName.FOCUS, /^focus(in)?$/.test(event.type));
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Button._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Button;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Button._jQueryInterface;
-  };
-
-  return Button;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): carousel.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Carousel = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'carousel';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.carousel';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 600;
-  var ARROW_LEFT_KEYCODE = 37; // KeyboardEvent.which value for left arrow key
-
-  var ARROW_RIGHT_KEYCODE = 39; // KeyboardEvent.which value for right arrow key
-
-  var TOUCHEVENT_COMPAT_WAIT = 500; // Time for mouse compat events to fire after touch
-
-  var Default = {
-    interval: 5000,
-    keyboard: true,
-    slide: false,
-    pause: 'hover',
-    wrap: true
-  };
-  var DefaultType = {
-    interval: '(number|boolean)',
-    keyboard: 'boolean',
-    slide: '(boolean|string)',
-    pause: '(string|boolean)',
-    wrap: 'boolean'
-  };
-  var Direction = {
-    NEXT: 'next',
-    PREV: 'prev',
-    LEFT: 'left',
-    RIGHT: 'right'
-  };
-  var Event = {
-    SLIDE: "slide" + EVENT_KEY,
-    SLID: "slid" + EVENT_KEY,
-    KEYDOWN: "keydown" + EVENT_KEY,
-    MOUSEENTER: "mouseenter" + EVENT_KEY,
-    MOUSELEAVE: "mouseleave" + EVENT_KEY,
-    TOUCHEND: "touchend" + EVENT_KEY,
-    LOAD_DATA_API: "load" + EVENT_KEY + DATA_API_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    CAROUSEL: 'carousel',
-    ACTIVE: 'active',
-    SLIDE: 'slide',
-    RIGHT: 'carousel-item-right',
-    LEFT: 'carousel-item-left',
-    NEXT: 'carousel-item-next',
-    PREV: 'carousel-item-prev',
-    ITEM: 'carousel-item'
-  };
-  var Selector = {
-    ACTIVE: '.active',
-    ACTIVE_ITEM: '.active.carousel-item',
-    ITEM: '.carousel-item',
-    NEXT_PREV: '.carousel-item-next, .carousel-item-prev',
-    INDICATORS: '.carousel-indicators',
-    DATA_SLIDE: '[data-slide], [data-slide-to]',
-    DATA_RIDE: '[data-ride="carousel"]'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Carousel =
-  /*#__PURE__*/
-  function () {
-    function Carousel(element, config) {
-      this._items = null;
-      this._interval = null;
-      this._activeElement = null;
-      this._isPaused = false;
-      this._isSliding = false;
-      this.touchTimeout = null;
-      this._config = this._getConfig(config);
-      this._element = $$$1(element)[0];
-      this._indicatorsElement = $$$1(this._element).find(Selector.INDICATORS)[0];
-
-      this._addEventListeners();
-    } // Getters
-
-
-    var _proto = Carousel.prototype;
-
-    // Public
-    _proto.next = function next() {
-      if (!this._isSliding) {
-        this._slide(Direction.NEXT);
-      }
-    };
-
-    _proto.nextWhenVisible = function nextWhenVisible() {
-      // Don't call next when the page isn't visible
-      // or the carousel or its parent isn't visible
-      if (!document.hidden && $$$1(this._element).is(':visible') && $$$1(this._element).css('visibility') !== 'hidden') {
-        this.next();
-      }
-    };
-
-    _proto.prev = function prev() {
-      if (!this._isSliding) {
-        this._slide(Direction.PREV);
-      }
-    };
-
-    _proto.pause = function pause(event) {
-      if (!event) {
-        this._isPaused = true;
-      }
-
-      if ($$$1(this._element).find(Selector.NEXT_PREV)[0] && Util.supportsTransitionEnd()) {
-        Util.triggerTransitionEnd(this._element);
-        this.cycle(true);
-      }
-
-      clearInterval(this._interval);
-      this._interval = null;
-    };
-
-    _proto.cycle = function cycle(event) {
-      if (!event) {
-        this._isPaused = false;
-      }
-
-      if (this._interval) {
-        clearInterval(this._interval);
-        this._interval = null;
-      }
-
-      if (this._config.interval && !this._isPaused) {
-        this._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);
-      }
-    };
-
-    _proto.to = function to(index) {
-      var _this = this;
-
-      this._activeElement = $$$1(this._element).find(Selector.ACTIVE_ITEM)[0];
-
-      var activeIndex = this._getItemIndex(this._activeElement);
-
-      if (index > this._items.length - 1 || index < 0) {
-        return;
-      }
-
-      if (this._isSliding) {
-        $$$1(this._element).one(Event.SLID, function () {
-          return _this.to(index);
-        });
-        return;
-      }
-
-      if (activeIndex === index) {
-        this.pause();
-        this.cycle();
-        return;
-      }
-
-      var direction = index > activeIndex ? Direction.NEXT : Direction.PREV;
-
-      this._slide(direction, this._items[index]);
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1(this._element).off(EVENT_KEY);
-      $$$1.removeData(this._element, DATA_KEY);
-      this._items = null;
-      this._config = null;
-      this._element = null;
-      this._interval = null;
-      this._isPaused = null;
-      this._isSliding = null;
-      this._activeElement = null;
-      this._indicatorsElement = null;
-    }; // Private
-
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
-      Util.typeCheckConfig(NAME, config, DefaultType);
-      return config;
-    };
-
-    _proto._addEventListeners = function _addEventListeners() {
-      var _this2 = this;
-
-      if (this._config.keyboard) {
-        $$$1(this._element).on(Event.KEYDOWN, function (event) {
-          return _this2._keydown(event);
-        });
-      }
-
-      if (this._config.pause === 'hover') {
-        $$$1(this._element).on(Event.MOUSEENTER, function (event) {
-          return _this2.pause(event);
-        }).on(Event.MOUSELEAVE, function (event) {
-          return _this2.cycle(event);
-        });
-
-        if ('ontouchstart' in document.documentElement) {
-          // If it's a touch-enabled device, mouseenter/leave are fired as
-          // part of the mouse compatibility events on first tap - the carousel
-          // would stop cycling until user tapped out of it;
-          // here, we listen for touchend, explicitly pause the carousel
-          // (as if it's the second time we tap on it, mouseenter compat event
-          // is NOT fired) and after a timeout (to allow for mouse compatibility
-          // events to fire) we explicitly restart cycling
-          $$$1(this._element).on(Event.TOUCHEND, function () {
-            _this2.pause();
-
-            if (_this2.touchTimeout) {
-              clearTimeout(_this2.touchTimeout);
-            }
-
-            _this2.touchTimeout = setTimeout(function (event) {
-              return _this2.cycle(event);
-            }, TOUCHEVENT_COMPAT_WAIT + _this2._config.interval);
-          });
-        }
-      }
-    };
-
-    _proto._keydown = function _keydown(event) {
-      if (/input|textarea/i.test(event.target.tagName)) {
-        return;
-      }
-
-      switch (event.which) {
-        case ARROW_LEFT_KEYCODE:
-          event.preventDefault();
-          this.prev();
-          break;
-
-        case ARROW_RIGHT_KEYCODE:
-          event.preventDefault();
-          this.next();
-          break;
-
-        default:
-      }
-    };
-
-    _proto._getItemIndex = function _getItemIndex(element) {
-      this._items = $$$1.makeArray($$$1(element).parent().find(Selector.ITEM));
-      return this._items.indexOf(element);
-    };
-
-    _proto._getItemByDirection = function _getItemByDirection(direction, activeElement) {
-      var isNextDirection = direction === Direction.NEXT;
-      var isPrevDirection = direction === Direction.PREV;
-
-      var activeIndex = this._getItemIndex(activeElement);
-
-      var lastItemIndex = this._items.length - 1;
-      var isGoingToWrap = isPrevDirection && activeIndex === 0 || isNextDirection && activeIndex === lastItemIndex;
-
-      if (isGoingToWrap && !this._config.wrap) {
-        return activeElement;
-      }
-
-      var delta = direction === Direction.PREV ? -1 : 1;
-      var itemIndex = (activeIndex + delta) % this._items.length;
-      return itemIndex === -1 ? this._items[this._items.length - 1] : this._items[itemIndex];
-    };
-
-    _proto._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, eventDirectionName) {
-      var targetIndex = this._getItemIndex(relatedTarget);
-
-      var fromIndex = this._getItemIndex($$$1(this._element).find(Selector.ACTIVE_ITEM)[0]);
-
-      var slideEvent = $$$1.Event(Event.SLIDE, {
-        relatedTarget: relatedTarget,
-        direction: eventDirectionName,
-        from: fromIndex,
-        to: targetIndex
-      });
-      $$$1(this._element).trigger(slideEvent);
-      return slideEvent;
-    };
-
-    _proto._setActiveIndicatorElement = function _setActiveIndicatorElement(element) {
-      if (this._indicatorsElement) {
-        $$$1(this._indicatorsElement).find(Selector.ACTIVE).removeClass(ClassName.ACTIVE);
-
-        var nextIndicator = this._indicatorsElement.children[this._getItemIndex(element)];
-
-        if (nextIndicator) {
-          $$$1(nextIndicator).addClass(ClassName.ACTIVE);
-        }
-      }
-    };
-
-    _proto._slide = function _slide(direction, element) {
-      var _this3 = this;
-
-      var activeElement = $$$1(this._element).find(Selector.ACTIVE_ITEM)[0];
-
-      var activeElementIndex = this._getItemIndex(activeElement);
-
-      var nextElement = element || activeElement && this._getItemByDirection(direction, activeElement);
-
-      var nextElementIndex = this._getItemIndex(nextElement);
-
-      var isCycling = Boolean(this._interval);
-      var directionalClassName;
-      var orderClassName;
-      var eventDirectionName;
-
-      if (direction === Direction.NEXT) {
-        directionalClassName = ClassName.LEFT;
-        orderClassName = ClassName.NEXT;
-        eventDirectionName = Direction.LEFT;
-      } else {
-        directionalClassName = ClassName.RIGHT;
-        orderClassName = ClassName.PREV;
-        eventDirectionName = Direction.RIGHT;
-      }
-
-      if (nextElement && $$$1(nextElement).hasClass(ClassName.ACTIVE)) {
-        this._isSliding = false;
-        return;
-      }
-
-      var slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName);
-
-      if (slideEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      if (!activeElement || !nextElement) {
-        // Some weirdness is happening, so we bail
-        return;
-      }
-
-      this._isSliding = true;
-
-      if (isCycling) {
-        this.pause();
-      }
-
-      this._setActiveIndicatorElement(nextElement);
-
-      var slidEvent = $$$1.Event(Event.SLID, {
-        relatedTarget: nextElement,
-        direction: eventDirectionName,
-        from: activeElementIndex,
-        to: nextElementIndex
-      });
-
-      if (Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.SLIDE)) {
-        $$$1(nextElement).addClass(orderClassName);
-        Util.reflow(nextElement);
-        $$$1(activeElement).addClass(directionalClassName);
-        $$$1(nextElement).addClass(directionalClassName);
-        $$$1(activeElement).one(Util.TRANSITION_END, function () {
-          $$$1(nextElement).removeClass(directionalClassName + " " + orderClassName).addClass(ClassName.ACTIVE);
-          $$$1(activeElement).removeClass(ClassName.ACTIVE + " " + orderClassName + " " + directionalClassName);
-          _this3._isSliding = false;
-          setTimeout(function () {
-            return $$$1(_this3._element).trigger(slidEvent);
-          }, 0);
-        }).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        $$$1(activeElement).removeClass(ClassName.ACTIVE);
-        $$$1(nextElement).addClass(ClassName.ACTIVE);
-        this._isSliding = false;
-        $$$1(this._element).trigger(slidEvent);
-      }
-
-      if (isCycling) {
-        this.cycle();
-      }
-    }; // Static
-
-
-    Carousel._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = _extends({}, Default, $$$1(this).data());
-
-        if (typeof config === 'object') {
-          _config = _extends({}, _config, config);
-        }
-
-        var action = typeof config === 'string' ? config : _config.slide;
-
-        if (!data) {
-          data = new Carousel(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'number') {
-          data.to(config);
-        } else if (typeof action === 'string') {
-          if (typeof data[action] === 'undefined') {
-            throw new TypeError("No method named \"" + action + "\"");
-          }
-
-          data[action]();
-        } else if (_config.interval) {
-          data.pause();
-          data.cycle();
-        }
-      });
-    };
-
-    Carousel._dataApiClickHandler = function _dataApiClickHandler(event) {
-      var selector = Util.getSelectorFromElement(this);
-
-      if (!selector) {
-        return;
-      }
-
-      var target = $$$1(selector)[0];
-
-      if (!target || !$$$1(target).hasClass(ClassName.CAROUSEL)) {
-        return;
-      }
-
-      var config = _extends({}, $$$1(target).data(), $$$1(this).data());
-      var slideIndex = this.getAttribute('data-slide-to');
-
-      if (slideIndex) {
-        config.interval = false;
-      }
-
-      Carousel._jQueryInterface.call($$$1(target), config);
-
-      if (slideIndex) {
-        $$$1(target).data(DATA_KEY).to(slideIndex);
-      }
-
-      event.preventDefault();
-    };
-
-    _createClass(Carousel, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }]);
-    return Carousel;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_SLIDE, Carousel._dataApiClickHandler);
-  $$$1(window).on(Event.LOAD_DATA_API, function () {
-    $$$1(Selector.DATA_RIDE).each(function () {
-      var $carousel = $$$1(this);
-
-      Carousel._jQueryInterface.call($carousel, $carousel.data());
-    });
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Carousel._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Carousel;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Carousel._jQueryInterface;
-  };
-
-  return Carousel;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): collapse.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Collapse = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'collapse';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.collapse';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 600;
-  var Default = {
-    toggle: true,
-    parent: ''
-  };
-  var DefaultType = {
-    toggle: 'boolean',
-    parent: '(string|element)'
-  };
-  var Event = {
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    SHOW: 'show',
-    COLLAPSE: 'collapse',
-    COLLAPSING: 'collapsing',
-    COLLAPSED: 'collapsed'
-  };
-  var Dimension = {
-    WIDTH: 'width',
-    HEIGHT: 'height'
-  };
-  var Selector = {
-    ACTIVES: '.show, .collapsing',
-    DATA_TOGGLE: '[data-toggle="collapse"]'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Collapse =
-  /*#__PURE__*/
-  function () {
-    function Collapse(element, config) {
-      this._isTransitioning = false;
-      this._element = element;
-      this._config = this._getConfig(config);
-      this._triggerArray = $$$1.makeArray($$$1("[data-toggle=\"collapse\"][href=\"#" + element.id + "\"]," + ("[data-toggle=\"collapse\"][data-target=\"#" + element.id + "\"]")));
-      var tabToggles = $$$1(Selector.DATA_TOGGLE);
-
-      for (var i = 0; i < tabToggles.length; i++) {
-        var elem = tabToggles[i];
-        var selector = Util.getSelectorFromElement(elem);
-
-        if (selector !== null && $$$1(selector).filter(element).length > 0) {
-          this._selector = selector;
-
-          this._triggerArray.push(elem);
-        }
-      }
-
-      this._parent = this._config.parent ? this._getParent() : null;
-
-      if (!this._config.parent) {
-        this._addAriaAndCollapsedClass(this._element, this._triggerArray);
-      }
-
-      if (this._config.toggle) {
-        this.toggle();
-      }
-    } // Getters
-
-
-    var _proto = Collapse.prototype;
-
-    // Public
-    _proto.toggle = function toggle() {
-      if ($$$1(this._element).hasClass(ClassName.SHOW)) {
-        this.hide();
-      } else {
-        this.show();
-      }
-    };
-
-    _proto.show = function show() {
-      var _this = this;
-
-      if (this._isTransitioning || $$$1(this._element).hasClass(ClassName.SHOW)) {
-        return;
-      }
-
-      var actives;
-      var activesData;
-
-      if (this._parent) {
-        actives = $$$1.makeArray($$$1(this._parent).find(Selector.ACTIVES).filter("[data-parent=\"" + this._config.parent + "\"]"));
-
-        if (actives.length === 0) {
-          actives = null;
-        }
-      }
-
-      if (actives) {
-        activesData = $$$1(actives).not(this._selector).data(DATA_KEY);
-
-        if (activesData && activesData._isTransitioning) {
-          return;
-        }
-      }
-
-      var startEvent = $$$1.Event(Event.SHOW);
-      $$$1(this._element).trigger(startEvent);
-
-      if (startEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      if (actives) {
-        Collapse._jQueryInterface.call($$$1(actives).not(this._selector), 'hide');
-
-        if (!activesData) {
-          $$$1(actives).data(DATA_KEY, null);
-        }
-      }
-
-      var dimension = this._getDimension();
-
-      $$$1(this._element).removeClass(ClassName.COLLAPSE).addClass(ClassName.COLLAPSING);
-      this._element.style[dimension] = 0;
-
-      if (this._triggerArray.length > 0) {
-        $$$1(this._triggerArray).removeClass(ClassName.COLLAPSED).attr('aria-expanded', true);
-      }
-
-      this.setTransitioning(true);
-
-      var complete = function complete() {
-        $$$1(_this._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).addClass(ClassName.SHOW);
-        _this._element.style[dimension] = '';
-
-        _this.setTransitioning(false);
-
-        $$$1(_this._element).trigger(Event.SHOWN);
-      };
-
-      if (!Util.supportsTransitionEnd()) {
-        complete();
-        return;
-      }
-
-      var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);
-      var scrollSize = "scroll" + capitalizedDimension;
-      $$$1(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
-      this._element.style[dimension] = this._element[scrollSize] + "px";
-    };
-
-    _proto.hide = function hide() {
-      var _this2 = this;
-
-      if (this._isTransitioning || !$$$1(this._element).hasClass(ClassName.SHOW)) {
-        return;
-      }
-
-      var startEvent = $$$1.Event(Event.HIDE);
-      $$$1(this._element).trigger(startEvent);
-
-      if (startEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      var dimension = this._getDimension();
-
-      this._element.style[dimension] = this._element.getBoundingClientRect()[dimension] + "px";
-      Util.reflow(this._element);
-      $$$1(this._element).addClass(ClassName.COLLAPSING).removeClass(ClassName.COLLAPSE).removeClass(ClassName.SHOW);
-
-      if (this._triggerArray.length > 0) {
-        for (var i = 0; i < this._triggerArray.length; i++) {
-          var trigger = this._triggerArray[i];
-          var selector = Util.getSelectorFromElement(trigger);
-
-          if (selector !== null) {
-            var $elem = $$$1(selector);
-
-            if (!$elem.hasClass(ClassName.SHOW)) {
-              $$$1(trigger).addClass(ClassName.COLLAPSED).attr('aria-expanded', false);
-            }
-          }
-        }
-      }
-
-      this.setTransitioning(true);
-
-      var complete = function complete() {
-        _this2.setTransitioning(false);
-
-        $$$1(_this2._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).trigger(Event.HIDDEN);
-      };
-
-      this._element.style[dimension] = '';
-
-      if (!Util.supportsTransitionEnd()) {
-        complete();
-        return;
-      }
-
-      $$$1(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
-    };
-
-    _proto.setTransitioning = function setTransitioning(isTransitioning) {
-      this._isTransitioning = isTransitioning;
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      this._config = null;
-      this._parent = null;
-      this._element = null;
-      this._triggerArray = null;
-      this._isTransitioning = null;
-    }; // Private
-
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
-      config.toggle = Boolean(config.toggle); // Coerce string values
-
-      Util.typeCheckConfig(NAME, config, DefaultType);
-      return config;
-    };
-
-    _proto._getDimension = function _getDimension() {
-      var hasWidth = $$$1(this._element).hasClass(Dimension.WIDTH);
-      return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT;
-    };
-
-    _proto._getParent = function _getParent() {
-      var _this3 = this;
-
-      var parent = null;
-
-      if (Util.isElement(this._config.parent)) {
-        parent = this._config.parent; // It's a jQuery object
-
-        if (typeof this._config.parent.jquery !== 'undefined') {
-          parent = this._config.parent[0];
-        }
-      } else {
-        parent = $$$1(this._config.parent)[0];
-      }
-
-      var selector = "[data-toggle=\"collapse\"][data-parent=\"" + this._config.parent + "\"]";
-      $$$1(parent).find(selector).each(function (i, element) {
-        _this3._addAriaAndCollapsedClass(Collapse._getTargetFromElement(element), [element]);
-      });
-      return parent;
-    };
-
-    _proto._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
-      if (element) {
-        var isOpen = $$$1(element).hasClass(ClassName.SHOW);
-
-        if (triggerArray.length > 0) {
-          $$$1(triggerArray).toggleClass(ClassName.COLLAPSED, !isOpen).attr('aria-expanded', isOpen);
-        }
-      }
-    }; // Static
-
-
-    Collapse._getTargetFromElement = function _getTargetFromElement(element) {
-      var selector = Util.getSelectorFromElement(element);
-      return selector ? $$$1(selector)[0] : null;
-    };
-
-    Collapse._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var $this = $$$1(this);
-        var data = $this.data(DATA_KEY);
-
-        var _config = _extends({}, Default, $this.data(), typeof config === 'object' && config);
-
-        if (!data && _config.toggle && /show|hide/.test(config)) {
-          _config.toggle = false;
-        }
-
-        if (!data) {
-          data = new Collapse(this, _config);
-          $this.data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Collapse, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }]);
-    return Collapse;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    // preventDefault only for <a> elements (which change the URL) not inside the collapsible element
-    if (event.currentTarget.tagName === 'A') {
-      event.preventDefault();
-    }
-
-    var $trigger = $$$1(this);
-    var selector = Util.getSelectorFromElement(this);
-    $$$1(selector).each(function () {
-      var $target = $$$1(this);
-      var data = $target.data(DATA_KEY);
-      var config = data ? 'toggle' : $trigger.data();
-
-      Collapse._jQueryInterface.call($target, config);
-    });
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Collapse._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Collapse;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Collapse._jQueryInterface;
-  };
-
-  return Collapse;
-}($);
-
-/**!
- * @fileOverview Kickass library to create and place poppers near their reference elements.
- * @version 1.12.9
- * @license
- * Copyright (c) 2016 Federico Zivolo and contributors
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';
-var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
-var timeoutDuration = 0;
-for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
-  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
-    timeoutDuration = 1;
-    break;
-  }
-}
-
-function microtaskDebounce(fn) {
-  var called = false;
-  return function () {
-    if (called) {
-      return;
-    }
-    called = true;
-    window.Promise.resolve().then(function () {
-      called = false;
-      fn();
-    });
-  };
-}
-
-function taskDebounce(fn) {
-  var scheduled = false;
-  return function () {
-    if (!scheduled) {
-      scheduled = true;
-      setTimeout(function () {
-        scheduled = false;
-        fn();
-      }, timeoutDuration);
-    }
-  };
-}
-
-var supportsMicroTasks = isBrowser && window.Promise;
-
-/**
-* Create a debounced version of a method, that's asynchronously deferred
-* but called in the minimum time possible.
-*
-* @method
-* @memberof Popper.Utils
-* @argument {Function} fn
-* @returns {Function}
-*/
-var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
-
-/**
- * Check if the given variable is a function
- * @method
- * @memberof Popper.Utils
- * @argument {Any} functionToCheck - variable to check
- * @returns {Boolean} answer to: is a function?
- */
-function isFunction(functionToCheck) {
-  var getType = {};
-  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
-}
-
-/**
- * Get CSS computed property of the given element
- * @method
- * @memberof Popper.Utils
- * @argument {Eement} element
- * @argument {String} property
- */
-function getStyleComputedProperty(element, property) {
-  if (element.nodeType !== 1) {
-    return [];
-  }
-  // NOTE: 1 DOM access here
-  var css = getComputedStyle(element, null);
-  return property ? css[property] : css;
-}
-
-/**
- * Returns the parentNode or the host of the element
- * @method
- * @memberof Popper.Utils
- * @argument {Element} element
- * @returns {Element} parent
- */
-function getParentNode(element) {
-  if (element.nodeName === 'HTML') {
-    return element;
-  }
-  return element.parentNode || element.host;
-}
-
-/**
- * Returns the scrolling parent of the given element
- * @method
- * @memberof Popper.Utils
- * @argument {Element} element
- * @returns {Element} scroll parent
- */
-function getScrollParent(element) {
-  // Return body, `getScroll` will take care to get the correct `scrollTop` from it
-  if (!element) {
-    return document.body;
-  }
-
-  switch (element.nodeName) {
-    case 'HTML':
-    case 'BODY':
-      return element.ownerDocument.body;
-    case '#document':
-      return element.body;
-  }
-
-  // Firefox want us to check `-x` and `-y` variations as well
-
-  var _getStyleComputedProp = getStyleComputedProperty(element),
-      overflow = _getStyleComputedProp.overflow,
-      overflowX = _getStyleComputedProp.overflowX,
-      overflowY = _getStyleComputedProp.overflowY;
-
-  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {
-    return element;
-  }
-
-  return getScrollParent(getParentNode(element));
-}
-
-/**
- * Returns the offset parent of the given element
- * @method
- * @memberof Popper.Utils
- * @argument {Element} element
- * @returns {Element} offset parent
- */
-function getOffsetParent(element) {
-  // NOTE: 1 DOM access here
-  var offsetParent = element && element.offsetParent;
-  var nodeName = offsetParent && offsetParent.nodeName;
-
-  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
-    if (element) {
-      return element.ownerDocument.documentElement;
-    }
-
-    return document.documentElement;
-  }
-
-  // .offsetParent will return the closest TD or TABLE in case
-  // no offsetParent is present, I hate this job...
-  if (['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
-    return getOffsetParent(offsetParent);
-  }
-
-  return offsetParent;
-}
-
-function isOffsetContainer(element) {
-  var nodeName = element.nodeName;
-
-  if (nodeName === 'BODY') {
-    return false;
-  }
-  return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
-}
-
-/**
- * Finds the root node (document, shadowDOM root) of the given element
- * @method
- * @memberof Popper.Utils
- * @argument {Element} node
- * @returns {Element} root node
- */
-function getRoot(node) {
-  if (node.parentNode !== null) {
-    return getRoot(node.parentNode);
-  }
-
-  return node;
-}
-
-/**
- * Finds the offset parent common to the two provided nodes
- * @method
- * @memberof Popper.Utils
- * @argument {Element} element1
- * @argument {Element} element2
- * @returns {Element} common offset parent
- */
-function findCommonOffsetParent(element1, element2) {
-  // This check is needed to avoid errors in case one of the elements isn't defined for any reason
-  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
-    return document.documentElement;
-  }
-
-  // Here we make sure to give as "start" the element that comes first in the DOM
-  var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
-  var start = order ? element1 : element2;
-  var end = order ? element2 : element1;
-
-  // Get common ancestor container
-  var range = document.createRange();
-  range.setStart(start, 0);
-  range.setEnd(end, 0);
-  var commonAncestorContainer = range.commonAncestorContainer;
-
-  // Both nodes are inside #document
-
-  if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
-    if (isOffsetContainer(commonAncestorContainer)) {
-      return commonAncestorContainer;
-    }
-
-    return getOffsetParent(commonAncestorContainer);
-  }
-
-  // one of the nodes is inside shadowDOM, find which one
-  var element1root = getRoot(element1);
-  if (element1root.host) {
-    return findCommonOffsetParent(element1root.host, element2);
-  } else {
-    return findCommonOffsetParent(element1, getRoot(element2).host);
-  }
-}
-
-/**
- * Gets the scroll value of the given element in the given side (top and left)
- * @method
- * @memberof Popper.Utils
- * @argument {Element} element
- * @argument {String} side `top` or `left`
- * @returns {number} amount of scrolled pixels
- */
-function getScroll(element) {
-  var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';
-
-  var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
-  var nodeName = element.nodeName;
-
-  if (nodeName === 'BODY' || nodeName === 'HTML') {
-    var html = element.ownerDocument.documentElement;
-    var scrollingElement = element.ownerDocument.scrollingElement || html;
-    return scrollingElement[upperSide];
-  }
-
-  return element[upperSide];
-}
-
-/*
- * Sum or subtract the element scroll values (left and top) from a given rect object
- * @method
- * @memberof Popper.Utils
- * @param {Object} rect - Rect object you want to change
- * @param {HTMLElement} element - The element from the function reads the scroll values
- * @param {Boolean} subtract - set to true if you want to subtract the scroll values
- * @return {Object} rect - The modifier rect object
- */
-function includeScroll(rect, element) {
-  var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
-
-  var scrollTop = getScroll(element, 'top');
-  var scrollLeft = getScroll(element, 'left');
-  var modifier = subtract ? -1 : 1;
-  rect.top += scrollTop * modifier;
-  rect.bottom += scrollTop * modifier;
-  rect.left += scrollLeft * modifier;
-  rect.right += scrollLeft * modifier;
-  return rect;
-}
-
-/*
- * Helper to detect borders of a given element
- * @method
- * @memberof Popper.Utils
- * @param {CSSStyleDeclaration} styles
- * Result of `getStyleComputedProperty` on the given element
- * @param {String} axis - `x` or `y`
- * @return {number} borders - The borders size of the given axis
- */
-
-function getBordersSize(styles, axis) {
-  var sideA = axis === 'x' ? 'Left' : 'Top';
-  var sideB = sideA === 'Left' ? 'Right' : 'Bottom';
-
-  return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10);
-}
-
-/**
- * Tells if you are running Internet Explorer 10
- * @method
- * @memberof Popper.Utils
- * @returns {Boolean} isIE10
- */
-var isIE10 = undefined;
-
-var isIE10$1 = function () {
-  if (isIE10 === undefined) {
-    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;
-  }
-  return isIE10;
-};
-
-function getSize(axis, body, html, computedStyle) {
-  return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE10$1() ? html['offset' + axis] + computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')] + computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')] : 0);
-}
-
-function getWindowSizes() {
-  var body = document.body;
-  var html = document.documentElement;
-  var computedStyle = isIE10$1() && getComputedStyle(html);
-
-  return {
-    height: getSize('Height', body, html, computedStyle),
-    width: getSize('Width', body, html, computedStyle)
-  };
-}
-
-var classCallCheck = function (instance, Constructor) {
-  if (!(instance instanceof Constructor)) {
-    throw new TypeError("Cannot call a class as a function");
-  }
-};
-
-var createClass = function () {
-  function defineProperties(target, props) {
-    for (var i = 0; i < props.length; i++) {
-      var descriptor = props[i];
-      descriptor.enumerable = descriptor.enumerable || false;
-      descriptor.configurable = true;
-      if ("value" in descriptor) descriptor.writable = true;
-      Object.defineProperty(target, descriptor.key, descriptor);
-    }
-  }
-
-  return function (Constructor, protoProps, staticProps) {
-    if (protoProps) defineProperties(Constructor.prototype, protoProps);
-    if (staticProps) defineProperties(Constructor, staticProps);
-    return Constructor;
-  };
-}();
-
-
-
-
-
-var defineProperty = function (obj, key, value) {
-  if (key in obj) {
-    Object.defineProperty(obj, key, {
-      value: value,
-      enumerable: true,
-      configurable: true,
-      writable: true
-    });
-  } else {
-    obj[key] = value;
-  }
-
-  return obj;
-};
-
-var _extends$1 = Object.assign || function (target) {
-  for (var i = 1; i < arguments.length; i++) {
-    var source = arguments[i];
-
-    for (var key in source) {
-      if (Object.prototype.hasOwnProperty.call(source, key)) {
-        target[key] = source[key];
-      }
-    }
-  }
-
-  return target;
-};
-
-/**
- * Given element offsets, generate an output similar to getBoundingClientRect
- * @method
- * @memberof Popper.Utils
- * @argument {Object} offsets
- * @returns {Object} ClientRect like output
- */
-function getClientRect(offsets) {
-  return _extends$1({}, offsets, {
-    right: offsets.left + offsets.width,
-    bottom: offsets.top + offsets.height
-  });
-}
-
-/**
- * Get bounding client rect of given element
- * @method
- * @memberof Popper.Utils
- * @param {HTMLElement} element
- * @return {Object} client rect
- */
-function getBoundingClientRect(element) {
-  var rect = {};
-
-  // IE10 10 FIX: Please, don't ask, the element isn't
-  // considered in DOM in some circumstances...
-  // This isn't reproducible in IE10 compatibility mode of IE11
-  if (isIE10$1()) {
-    try {
-      rect = element.getBoundingClientRect();
-      var scrollTop = getScroll(element, 'top');
-      var scrollLeft = getScroll(element, 'left');
-      rect.top += scrollTop;
-      rect.left += scrollLeft;
-      rect.bottom += scrollTop;
-      rect.right += scrollLeft;
-    } catch (err) {}
-  } else {
-    rect = element.getBoundingClientRect();
-  }
-
-  var result = {
-    left: rect.left,
-    top: rect.top,
-    width: rect.right - rect.left,
-    height: rect.bottom - rect.top
-  };
-
-  // subtract scrollbar size from sizes
-  var sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};
-  var width = sizes.width || element.clientWidth || result.right - result.left;
-  var height = sizes.height || element.clientHeight || result.bottom - result.top;
-
-  var horizScrollbar = element.offsetWidth - width;
-  var vertScrollbar = element.offsetHeight - height;
-
-  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`
-  // we make this check conditional for performance reasons
-  if (horizScrollbar || vertScrollbar) {
-    var styles = getStyleComputedProperty(element);
-    horizScrollbar -= getBordersSize(styles, 'x');
-    vertScrollbar -= getBordersSize(styles, 'y');
-
-    result.width -= horizScrollbar;
-    result.height -= vertScrollbar;
-  }
-
-  return getClientRect(result);
-}
-
-function getOffsetRectRelativeToArbitraryNode(children, parent) {
-  var isIE10 = isIE10$1();
-  var isHTML = parent.nodeName === 'HTML';
-  var childrenRect = getBoundingClientRect(children);
-  var parentRect = getBoundingClientRect(parent);
-  var scrollParent = getScrollParent(children);
-
-  var styles = getStyleComputedProperty(parent);
-  var borderTopWidth = parseFloat(styles.borderTopWidth, 10);
-  var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);
-
-  var offsets = getClientRect({
-    top: childrenRect.top - parentRect.top - borderTopWidth,
-    left: childrenRect.left - parentRect.left - borderLeftWidth,
-    width: childrenRect.width,
-    height: childrenRect.height
-  });
-  offsets.marginTop = 0;
-  offsets.marginLeft = 0;
-
-  // Subtract margins of documentElement in case it's being used as parent
-  // we do this only on HTML because it's the only element that behaves
-  // differently when margins are applied to it. The margins are included in
-  // the box of the documentElement, in the other cases not.
-  if (!isIE10 && isHTML) {
-    var marginTop = parseFloat(styles.marginTop, 10);
-    var marginLeft = parseFloat(styles.marginLeft, 10);
-
-    offsets.top -= borderTopWidth - marginTop;
-    offsets.bottom -= borderTopWidth - marginTop;
-    offsets.left -= borderLeftWidth - marginLeft;
-    offsets.right -= borderLeftWidth - marginLeft;
-
-    // Attach marginTop and marginLeft because in some circumstances we may need them
-    offsets.marginTop = marginTop;
-    offsets.marginLeft = marginLeft;
-  }
-
-  if (isIE10 ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
-    offsets = includeScroll(offsets, parent);
-  }
-
-  return offsets;
-}
-
-function getViewportOffsetRectRelativeToArtbitraryNode(element) {
-  var html = element.ownerDocument.documentElement;
-  var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
-  var width = Math.max(html.clientWidth, window.innerWidth || 0);
-  var height = Math.max(html.clientHeight, window.innerHeight || 0);
-
-  var scrollTop = getScroll(html);
-  var scrollLeft = getScroll(html, 'left');
-
-  var offset = {
-    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
-    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
-    width: width,
-    height: height
-  };
-
-  return getClientRect(offset);
-}
-
-/**
- * Check if the given element is fixed or is inside a fixed parent
- * @method
- * @memberof Popper.Utils
- * @argument {Element} element
- * @argument {Element} customContainer
- * @returns {Boolean} answer to "isFixed?"
- */
-function isFixed(element) {
-  var nodeName = element.nodeName;
-  if (nodeName === 'BODY' || nodeName === 'HTML') {
-    return false;
-  }
-  if (getStyleComputedProperty(element, 'position') === 'fixed') {
-    return true;
-  }
-  return isFixed(getParentNode(element));
-}
-
-/**
- * Computed the boundaries limits and return them
- * @method
- * @memberof Popper.Utils
- * @param {HTMLElement} popper
- * @param {HTMLElement} reference
- * @param {number} padding
- * @param {HTMLElement} boundariesElement - Element used to define the boundaries
- * @returns {Object} Coordinates of the boundaries
- */
-function getBoundaries(popper, reference, padding, boundariesElement) {
-  // NOTE: 1 DOM access here
-  var boundaries = { top: 0, left: 0 };
-  var offsetParent = findCommonOffsetParent(popper, reference);
-
-  // Handle viewport case
-  if (boundariesElement === 'viewport') {
-    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);
-  } else {
-    // Handle other cases based on DOM element used as boundaries
-    var boundariesNode = void 0;
-    if (boundariesElement === 'scrollParent') {
-      boundariesNode = getScrollParent(getParentNode(reference));
-      if (boundariesNode.nodeName === 'BODY') {
-        boundariesNode = popper.ownerDocument.documentElement;
-      }
-    } else if (boundariesElement === 'window') {
-      boundariesNode = popper.ownerDocument.documentElement;
-    } else {
-      boundariesNode = boundariesElement;
-    }
-
-    var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent);
-
-    // In case of HTML, we need a different computation
-    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
-      var _getWindowSizes = getWindowSizes(),
-          height = _getWindowSizes.height,
-          width = _getWindowSizes.width;
-
-      boundaries.top += offsets.top - offsets.marginTop;
-      boundaries.bottom = height + offsets.top;
-      boundaries.left += offsets.left - offsets.marginLeft;
-      boundaries.right = width + offsets.left;
-    } else {
-      // for all the other DOM elements, this one is good
-      boundaries = offsets;
-    }
-  }
-
-  // Add paddings
-  boundaries.left += padding;
-  boundaries.top += padding;
-  boundaries.right -= padding;
-  boundaries.bottom -= padding;
-
-  return boundaries;
-}
-
-function getArea(_ref) {
-  var width = _ref.width,
-      height = _ref.height;
-
-  return width * height;
-}
-
-/**
- * Utility used to transform the `auto` placement to the placement with more
- * available space.
- * @method
- * @memberof Popper.Utils
- * @argument {Object} data - The data object generated by update method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The data object, properly modified
- */
-function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {
-  var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;
-
-  if (placement.indexOf('auto') === -1) {
-    return placement;
-  }
-
-  var boundaries = getBoundaries(popper, reference, padding, boundariesElement);
-
-  var rects = {
-    top: {
-      width: boundaries.width,
-      height: refRect.top - boundaries.top
-    },
-    right: {
-      width: boundaries.right - refRect.right,
-      height: boundaries.height
-    },
-    bottom: {
-      width: boundaries.width,
-      height: boundaries.bottom - refRect.bottom
-    },
-    left: {
-      width: refRect.left - boundaries.left,
-      height: boundaries.height
-    }
-  };
-
-  var sortedAreas = Object.keys(rects).map(function (key) {
-    return _extends$1({
-      key: key
-    }, rects[key], {
-      area: getArea(rects[key])
-    });
-  }).sort(function (a, b) {
-    return b.area - a.area;
-  });
-
-  var filteredAreas = sortedAreas.filter(function (_ref2) {
-    var width = _ref2.width,
-        height = _ref2.height;
-    return width >= popper.clientWidth && height >= popper.clientHeight;
-  });
-
-  var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
-
-  var variation = placement.split('-')[1];
-
-  return computedPlacement + (variation ? '-' + variation : '');
-}
-
-/**
- * Get offsets to the reference element
- * @method
- * @memberof Popper.Utils
- * @param {Object} state
- * @param {Element} popper - the popper element
- * @param {Element} reference - the reference element (the popper will be relative to this)
- * @returns {Object} An object containing the offsets which will be applied to the popper
- */
-function getReferenceOffsets(state, popper, reference) {
-  var commonOffsetParent = findCommonOffsetParent(popper, reference);
-  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);
-}
-
-/**
- * Get the outer sizes of the given element (offset size + margins)
- * @method
- * @memberof Popper.Utils
- * @argument {Element} element
- * @returns {Object} object containing width and height properties
- */
-function getOuterSizes(element) {
-  var styles = getComputedStyle(element);
-  var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-  var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
-  var result = {
-    width: element.offsetWidth + y,
-    height: element.offsetHeight + x
-  };
-  return result;
-}
-
-/**
- * Get the opposite placement of the given one
- * @method
- * @memberof Popper.Utils
- * @argument {String} placement
- * @returns {String} flipped placement
- */
-function getOppositePlacement(placement) {
-  var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
-  return placement.replace(/left|right|bottom|top/g, function (matched) {
-    return hash[matched];
-  });
-}
-
-/**
- * Get offsets to the popper
- * @method
- * @memberof Popper.Utils
- * @param {Object} position - CSS position the Popper will get applied
- * @param {HTMLElement} popper - the popper element
- * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
- * @param {String} placement - one of the valid placement options
- * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
- */
-function getPopperOffsets(popper, referenceOffsets, placement) {
-  placement = placement.split('-')[0];
-
-  // Get popper node sizes
-  var popperRect = getOuterSizes(popper);
-
-  // Add position, width and height to our offsets object
-  var popperOffsets = {
-    width: popperRect.width,
-    height: popperRect.height
-  };
-
-  // depending by the popper placement we have to compute its offsets slightly differently
-  var isHoriz = ['right', 'left'].indexOf(placement) !== -1;
-  var mainSide = isHoriz ? 'top' : 'left';
-  var secondarySide = isHoriz ? 'left' : 'top';
-  var measurement = isHoriz ? 'height' : 'width';
-  var secondaryMeasurement = !isHoriz ? 'height' : 'width';
-
-  popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
-  if (placement === secondarySide) {
-    popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
-  } else {
-    popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
-  }
-
-  return popperOffsets;
-}
-
-/**
- * Mimics the `find` method of Array
- * @method
- * @memberof Popper.Utils
- * @argument {Array} arr
- * @argument prop
- * @argument value
- * @returns index or -1
- */
-function find(arr, check) {
-  // use native find if supported
-  if (Array.prototype.find) {
-    return arr.find(check);
-  }
-
-  // use `filter` to obtain the same behavior of `find`
-  return arr.filter(check)[0];
-}
-
-/**
- * Return the index of the matching object
- * @method
- * @memberof Popper.Utils
- * @argument {Array} arr
- * @argument prop
- * @argument value
- * @returns index or -1
- */
-function findIndex(arr, prop, value) {
-  // use native findIndex if supported
-  if (Array.prototype.findIndex) {
-    return arr.findIndex(function (cur) {
-      return cur[prop] === value;
-    });
-  }
-
-  // use `find` + `indexOf` if `findIndex` isn't supported
-  var match = find(arr, function (obj) {
-    return obj[prop] === value;
-  });
-  return arr.indexOf(match);
-}
-
-/**
- * Loop trough the list of modifiers and run them in order,
- * each of them will then edit the data object.
- * @method
- * @memberof Popper.Utils
- * @param {dataObject} data
- * @param {Array} modifiers
- * @param {String} ends - Optional modifier name used as stopper
- * @returns {dataObject}
- */
-function runModifiers(modifiers, data, ends) {
-  var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
-
-  modifiersToRun.forEach(function (modifier) {
-    if (modifier['function']) {
-      // eslint-disable-line dot-notation
-      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
-    }
-    var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
-    if (modifier.enabled && isFunction(fn)) {
-      // Add properties to offsets to make them a complete clientRect object
-      // we do this before each modifier to make sure the previous one doesn't
-      // mess with these values
-      data.offsets.popper = getClientRect(data.offsets.popper);
-      data.offsets.reference = getClientRect(data.offsets.reference);
-
-      data = fn(data, modifier);
-    }
-  });
-
-  return data;
-}
-
-/**
- * Updates the position of the popper, computing the new offsets and applying
- * the new style.<br />
- * Prefer `scheduleUpdate` over `update` because of performance reasons.
- * @method
- * @memberof Popper
- */
-function update() {
-  // if popper is destroyed, don't perform any further update
-  if (this.state.isDestroyed) {
-    return;
-  }
-
-  var data = {
-    instance: this,
-    styles: {},
-    arrowStyles: {},
-    attributes: {},
-    flipped: false,
-    offsets: {}
-  };
-
-  // compute reference element offsets
-  data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference);
-
-  // compute auto placement, store placement inside the data object,
-  // modifiers will be able to edit `placement` if needed
-  // and refer to originalPlacement to know the original value
-  data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);
-
-  // store the computed placement inside `originalPlacement`
-  data.originalPlacement = data.placement;
-
-  // compute the popper offsets
-  data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);
-  data.offsets.popper.position = 'absolute';
-
-  // run the modifiers
-  data = runModifiers(this.modifiers, data);
-
-  // the first `update` will call `onCreate` callback
-  // the other ones will call `onUpdate` callback
-  if (!this.state.isCreated) {
-    this.state.isCreated = true;
-    this.options.onCreate(data);
-  } else {
-    this.options.onUpdate(data);
-  }
-}
-
-/**
- * Helper used to know if the given modifier is enabled.
- * @method
- * @memberof Popper.Utils
- * @returns {Boolean}
- */
-function isModifierEnabled(modifiers, modifierName) {
-  return modifiers.some(function (_ref) {
-    var name = _ref.name,
-        enabled = _ref.enabled;
-    return enabled && name === modifierName;
-  });
-}
-
-/**
- * Get the prefixed supported property name
- * @method
- * @memberof Popper.Utils
- * @argument {String} property (camelCase)
- * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
- */
-function getSupportedPropertyName(property) {
-  var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
-  var upperProp = property.charAt(0).toUpperCase() + property.slice(1);
-
-  for (var i = 0; i < prefixes.length - 1; i++) {
-    var prefix = prefixes[i];
-    var toCheck = prefix ? '' + prefix + upperProp : property;
-    if (typeof document.body.style[toCheck] !== 'undefined') {
-      return toCheck;
-    }
-  }
-  return null;
-}
-
-/**
- * Destroy the popper
- * @method
- * @memberof Popper
- */
-function destroy() {
-  this.state.isDestroyed = true;
-
-  // touch DOM only if `applyStyle` modifier is enabled
-  if (isModifierEnabled(this.modifiers, 'applyStyle')) {
-    this.popper.removeAttribute('x-placement');
-    this.popper.style.left = '';
-    this.popper.style.position = '';
-    this.popper.style.top = '';
-    this.popper.style[getSupportedPropertyName('transform')] = '';
-  }
-
-  this.disableEventListeners();
-
-  // remove the popper if user explicity asked for the deletion on destroy
-  // do not use `remove` because IE11 doesn't support it
-  if (this.options.removeOnDestroy) {
-    this.popper.parentNode.removeChild(this.popper);
-  }
-  return this;
-}
-
-/**
- * Get the window associated with the element
- * @argument {Element} element
- * @returns {Window}
- */
-function getWindow(element) {
-  var ownerDocument = element.ownerDocument;
-  return ownerDocument ? ownerDocument.defaultView : window;
-}
-
-function attachToScrollParents(scrollParent, event, callback, scrollParents) {
-  var isBody = scrollParent.nodeName === 'BODY';
-  var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
-  target.addEventListener(event, callback, { passive: true });
-
-  if (!isBody) {
-    attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
-  }
-  scrollParents.push(target);
-}
-
-/**
- * Setup needed event listeners used to update the popper position
- * @method
- * @memberof Popper.Utils
- * @private
- */
-function setupEventListeners(reference, options, state, updateBound) {
-  // Resize event listener on window
-  state.updateBound = updateBound;
-  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
-
-  // Scroll event listener on scroll parents
-  var scrollElement = getScrollParent(reference);
-  attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
-  state.scrollElement = scrollElement;
-  state.eventsEnabled = true;
-
-  return state;
-}
-
-/**
- * It will add resize/scroll events and start recalculating
- * position of the popper element when they are triggered.
- * @method
- * @memberof Popper
- */
-function enableEventListeners() {
-  if (!this.state.eventsEnabled) {
-    this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);
-  }
-}
-
-/**
- * Remove event listeners used to update the popper position
- * @method
- * @memberof Popper.Utils
- * @private
- */
-function removeEventListeners(reference, state) {
-  // Remove resize event listener on window
-  getWindow(reference).removeEventListener('resize', state.updateBound);
-
-  // Remove scroll event listener on scroll parents
-  state.scrollParents.forEach(function (target) {
-    target.removeEventListener('scroll', state.updateBound);
-  });
-
-  // Reset state
-  state.updateBound = null;
-  state.scrollParents = [];
-  state.scrollElement = null;
-  state.eventsEnabled = false;
-  return state;
-}
-
-/**
- * It will remove resize/scroll events and won't recalculate popper position
- * when they are triggered. It also won't trigger onUpdate callback anymore,
- * unless you call `update` method manually.
- * @method
- * @memberof Popper
- */
-function disableEventListeners() {
-  if (this.state.eventsEnabled) {
-    cancelAnimationFrame(this.scheduleUpdate);
-    this.state = removeEventListeners(this.reference, this.state);
-  }
-}
-
-/**
- * Tells if a given input is a number
- * @method
- * @memberof Popper.Utils
- * @param {*} input to check
- * @return {Boolean}
- */
-function isNumeric(n) {
-  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
-}
-
-/**
- * Set the style to the given popper
- * @method
- * @memberof Popper.Utils
- * @argument {Element} element - Element to apply the style to
- * @argument {Object} styles
- * Object with a list of properties and values which will be applied to the element
- */
-function setStyles(element, styles) {
-  Object.keys(styles).forEach(function (prop) {
-    var unit = '';
-    // add unit if the value is numeric and is one of the following
-    if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
-      unit = 'px';
-    }
-    element.style[prop] = styles[prop] + unit;
-  });
-}
-
-/**
- * Set the attributes to the given popper
- * @method
- * @memberof Popper.Utils
- * @argument {Element} element - Element to apply the attributes to
- * @argument {Object} styles
- * Object with a list of properties and values which will be applied to the element
- */
-function setAttributes(element, attributes) {
-  Object.keys(attributes).forEach(function (prop) {
-    var value = attributes[prop];
-    if (value !== false) {
-      element.setAttribute(prop, attributes[prop]);
-    } else {
-      element.removeAttribute(prop);
-    }
-  });
-}
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by `update` method
- * @argument {Object} data.styles - List of style properties - values to apply to popper element
- * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The same data object
- */
-function applyStyle(data) {
-  // any property present in `data.styles` will be applied to the popper,
-  // in this way we can make the 3rd party modifiers add custom styles to it
-  // Be aware, modifiers could override the properties defined in the previous
-  // lines of this modifier!
-  setStyles(data.instance.popper, data.styles);
-
-  // any property present in `data.attributes` will be applied to the popper,
-  // they will be set as HTML attributes of the element
-  setAttributes(data.instance.popper, data.attributes);
-
-  // if arrowElement is defined and arrowStyles has some properties
-  if (data.arrowElement && Object.keys(data.arrowStyles).length) {
-    setStyles(data.arrowElement, data.arrowStyles);
-  }
-
-  return data;
-}
-
-/**
- * Set the x-placement attribute before everything else because it could be used
- * to add margins to the popper margins needs to be calculated to get the
- * correct popper offsets.
- * @method
- * @memberof Popper.modifiers
- * @param {HTMLElement} reference - The reference element used to position the popper
- * @param {HTMLElement} popper - The HTML element used as popper.
- * @param {Object} options - Popper.js options
- */
-function applyStyleOnLoad(reference, popper, options, modifierOptions, state) {
-  // compute reference element offsets
-  var referenceOffsets = getReferenceOffsets(state, popper, reference);
-
-  // compute auto placement, store placement inside the data object,
-  // modifiers will be able to edit `placement` if needed
-  // and refer to originalPlacement to know the original value
-  var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);
-
-  popper.setAttribute('x-placement', placement);
-
-  // Apply `position` to popper before anything else because
-  // without the position applied we can't guarantee correct computations
-  setStyles(popper, { position: 'absolute' });
-
-  return options;
-}
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by `update` method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The data object, properly modified
- */
-function computeStyle(data, options) {
-  var x = options.x,
-      y = options.y;
-  var popper = data.offsets.popper;
-
-  // Remove this legacy support in Popper.js v2
-
-  var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) {
-    return modifier.name === 'applyStyle';
-  }).gpuAcceleration;
-  if (legacyGpuAccelerationOption !== undefined) {
-    console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');
-  }
-  var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;
-
-  var offsetParent = getOffsetParent(data.instance.popper);
-  var offsetParentRect = getBoundingClientRect(offsetParent);
-
-  // Styles
-  var styles = {
-    position: popper.position
-  };
-
-  // floor sides to avoid blurry text
-  var offsets = {
-    left: Math.floor(popper.left),
-    top: Math.floor(popper.top),
-    bottom: Math.floor(popper.bottom),
-    right: Math.floor(popper.right)
-  };
-
-  var sideA = x === 'bottom' ? 'top' : 'bottom';
-  var sideB = y === 'right' ? 'left' : 'right';
-
-  // if gpuAcceleration is set to `true` and transform is supported,
-  //  we use `translate3d` to apply the position to the popper we
-  // automatically use the supported prefixed version if needed
-  var prefixedProperty = getSupportedPropertyName('transform');
-
-  // now, let's make a step back and look at this code closely (wtf?)
-  // If the content of the popper grows once it's been positioned, it
-  // may happen that the popper gets misplaced because of the new content
-  // overflowing its reference element
-  // To avoid this problem, we provide two options (x and y), which allow
-  // the consumer to define the offset origin.
-  // If we position a popper on top of a reference element, we can set
-  // `x` to `top` to make the popper grow towards its top instead of
-  // its bottom.
-  var left = void 0,
-      top = void 0;
-  if (sideA === 'bottom') {
-    top = -offsetParentRect.height + offsets.bottom;
-  } else {
-    top = offsets.top;
-  }
-  if (sideB === 'right') {
-    left = -offsetParentRect.width + offsets.right;
-  } else {
-    left = offsets.left;
-  }
-  if (gpuAcceleration && prefixedProperty) {
-    styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)';
-    styles[sideA] = 0;
-    styles[sideB] = 0;
-    styles.willChange = 'transform';
-  } else {
-    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties
-    var invertTop = sideA === 'bottom' ? -1 : 1;
-    var invertLeft = sideB === 'right' ? -1 : 1;
-    styles[sideA] = top * invertTop;
-    styles[sideB] = left * invertLeft;
-    styles.willChange = sideA + ', ' + sideB;
-  }
-
-  // Attributes
-  var attributes = {
-    'x-placement': data.placement
-  };
-
-  // Update `data` attributes, styles and arrowStyles
-  data.attributes = _extends$1({}, attributes, data.attributes);
-  data.styles = _extends$1({}, styles, data.styles);
-  data.arrowStyles = _extends$1({}, data.offsets.arrow, data.arrowStyles);
-
-  return data;
-}
-
-/**
- * Helper used to know if the given modifier depends from another one.<br />
- * It checks if the needed modifier is listed and enabled.
- * @method
- * @memberof Popper.Utils
- * @param {Array} modifiers - list of modifiers
- * @param {String} requestingName - name of requesting modifier
- * @param {String} requestedName - name of requested modifier
- * @returns {Boolean}
- */
-function isModifierRequired(modifiers, requestingName, requestedName) {
-  var requesting = find(modifiers, function (_ref) {
-    var name = _ref.name;
-    return name === requestingName;
-  });
-
-  var isRequired = !!requesting && modifiers.some(function (modifier) {
-    return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
-  });
-
-  if (!isRequired) {
-    var _requesting = '`' + requestingName + '`';
-    var requested = '`' + requestedName + '`';
-    console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');
-  }
-  return isRequired;
-}
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by update method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The data object, properly modified
- */
-function arrow(data, options) {
-  var _data$offsets$arrow;
-
-  // arrow depends on keepTogether in order to work
-  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {
-    return data;
-  }
-
-  var arrowElement = options.element;
-
-  // if arrowElement is a string, suppose it's a CSS selector
-  if (typeof arrowElement === 'string') {
-    arrowElement = data.instance.popper.querySelector(arrowElement);
-
-    // if arrowElement is not found, don't run the modifier
-    if (!arrowElement) {
-      return data;
-    }
-  } else {
-    // if the arrowElement isn't a query selector we must check that the
-    // provided DOM node is child of its popper node
-    if (!data.instance.popper.contains(arrowElement)) {
-      console.warn('WARNING: `arrow.element` must be child of its popper element!');
-      return data;
-    }
-  }
-
-  var placement = data.placement.split('-')[0];
-  var _data$offsets = data.offsets,
-      popper = _data$offsets.popper,
-      reference = _data$offsets.reference;
-
-  var isVertical = ['left', 'right'].indexOf(placement) !== -1;
-
-  var len = isVertical ? 'height' : 'width';
-  var sideCapitalized = isVertical ? 'Top' : 'Left';
-  var side = sideCapitalized.toLowerCase();
-  var altSide = isVertical ? 'left' : 'top';
-  var opSide = isVertical ? 'bottom' : 'right';
-  var arrowElementSize = getOuterSizes(arrowElement)[len];
-
-  //
-  // extends keepTogether behavior making sure the popper and its
-  // reference have enough pixels in conjuction
-  //
-
-  // top/left side
-  if (reference[opSide] - arrowElementSize < popper[side]) {
-    data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);
-  }
-  // bottom/right side
-  if (reference[side] + arrowElementSize > popper[opSide]) {
-    data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];
-  }
-  data.offsets.popper = getClientRect(data.offsets.popper);
-
-  // compute center of the popper
-  var center = reference[side] + reference[len] / 2 - arrowElementSize / 2;
-
-  // Compute the sideValue using the updated popper offsets
-  // take popper margin in account because we don't have this info available
-  var css = getStyleComputedProperty(data.instance.popper);
-  var popperMarginSide = parseFloat(css['margin' + sideCapitalized], 10);
-  var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width'], 10);
-  var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;
-
-  // prevent arrowElement from being placed not contiguously to its popper
-  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);
-
-  data.arrowElement = arrowElement;
-  data.offsets.arrow = (_data$offsets$arrow = {}, defineProperty(_data$offsets$arrow, side, Math.round(sideValue)), defineProperty(_data$offsets$arrow, altSide, ''), _data$offsets$arrow);
-
-  return data;
-}
-
-/**
- * Get the opposite placement variation of the given one
- * @method
- * @memberof Popper.Utils
- * @argument {String} placement variation
- * @returns {String} flipped placement variation
- */
-function getOppositeVariation(variation) {
-  if (variation === 'end') {
-    return 'start';
-  } else if (variation === 'start') {
-    return 'end';
-  }
-  return variation;
-}
-
-/**
- * List of accepted placements to use as values of the `placement` option.<br />
- * Valid placements are:
- * - `auto`
- * - `top`
- * - `right`
- * - `bottom`
- * - `left`
- *
- * Each placement can have a variation from this list:
- * - `-start`
- * - `-end`
- *
- * Variations are interpreted easily if you think of them as the left to right
- * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`
- * is right.<br />
- * Vertically (`left` and `right`), `start` is top and `end` is bottom.
- *
- * Some valid examples are:
- * - `top-end` (on top of reference, right aligned)
- * - `right-start` (on right of reference, top aligned)
- * - `bottom` (on bottom, centered)
- * - `auto-right` (on the side with more space available, alignment depends by placement)
- *
- * @static
- * @type {Array}
- * @enum {String}
- * @readonly
- * @method placements
- * @memberof Popper
- */
-var placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];
-
-// Get rid of `auto` `auto-start` and `auto-end`
-var validPlacements = placements.slice(3);
-
-/**
- * Given an initial placement, returns all the subsequent placements
- * clockwise (or counter-clockwise).
- *
- * @method
- * @memberof Popper.Utils
- * @argument {String} placement - A valid placement (it accepts variations)
- * @argument {Boolean} counter - Set to true to walk the placements counterclockwise
- * @returns {Array} placements including their variations
- */
-function clockwise(placement) {
-  var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
-
-  var index = validPlacements.indexOf(placement);
-  var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));
-  return counter ? arr.reverse() : arr;
-}
-
-var BEHAVIORS = {
-  FLIP: 'flip',
-  CLOCKWISE: 'clockwise',
-  COUNTERCLOCKWISE: 'counterclockwise'
-};
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by update method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The data object, properly modified
- */
-function flip(data, options) {
-  // if `inner` modifier is enabled, we can't use the `flip` modifier
-  if (isModifierEnabled(data.instance.modifiers, 'inner')) {
-    return data;
-  }
-
-  if (data.flipped && data.placement === data.originalPlacement) {
-    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides
-    return data;
-  }
-
-  var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement);
-
-  var placement = data.placement.split('-')[0];
-  var placementOpposite = getOppositePlacement(placement);
-  var variation = data.placement.split('-')[1] || '';
-
-  var flipOrder = [];
-
-  switch (options.behavior) {
-    case BEHAVIORS.FLIP:
-      flipOrder = [placement, placementOpposite];
-      break;
-    case BEHAVIORS.CLOCKWISE:
-      flipOrder = clockwise(placement);
-      break;
-    case BEHAVIORS.COUNTERCLOCKWISE:
-      flipOrder = clockwise(placement, true);
-      break;
-    default:
-      flipOrder = options.behavior;
-  }
-
-  flipOrder.forEach(function (step, index) {
-    if (placement !== step || flipOrder.length === index + 1) {
-      return data;
-    }
-
-    placement = data.placement.split('-')[0];
-    placementOpposite = getOppositePlacement(placement);
-
-    var popperOffsets = data.offsets.popper;
-    var refOffsets = data.offsets.reference;
-
-    // using floor because the reference offsets may contain decimals we are not going to consider here
-    var floor = Math.floor;
-    var overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);
-
-    var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);
-    var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);
-    var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);
-    var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);
-
-    var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;
-
-    // flip the variation if required
-    var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
-    var flippedVariation = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);
-
-    if (overlapsRef || overflowsBoundaries || flippedVariation) {
-      // this boolean to detect any flip loop
-      data.flipped = true;
-
-      if (overlapsRef || overflowsBoundaries) {
-        placement = flipOrder[index + 1];
-      }
-
-      if (flippedVariation) {
-        variation = getOppositeVariation(variation);
-      }
-
-      data.placement = placement + (variation ? '-' + variation : '');
-
-      // this object contains `position`, we want to preserve it along with
-      // any additional property we may add in the future
-      data.offsets.popper = _extends$1({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));
-
-      data = runModifiers(data.instance.modifiers, data, 'flip');
-    }
-  });
-  return data;
-}
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by update method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The data object, properly modified
- */
-function keepTogether(data) {
-  var _data$offsets = data.offsets,
-      popper = _data$offsets.popper,
-      reference = _data$offsets.reference;
-
-  var placement = data.placement.split('-')[0];
-  var floor = Math.floor;
-  var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
-  var side = isVertical ? 'right' : 'bottom';
-  var opSide = isVertical ? 'left' : 'top';
-  var measurement = isVertical ? 'width' : 'height';
-
-  if (popper[side] < floor(reference[opSide])) {
-    data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];
-  }
-  if (popper[opSide] > floor(reference[side])) {
-    data.offsets.popper[opSide] = floor(reference[side]);
-  }
-
-  return data;
-}
-
-/**
- * Converts a string containing value + unit into a px value number
- * @function
- * @memberof {modifiers~offset}
- * @private
- * @argument {String} str - Value + unit string
- * @argument {String} measurement - `height` or `width`
- * @argument {Object} popperOffsets
- * @argument {Object} referenceOffsets
- * @returns {Number|String}
- * Value in pixels, or original string if no values were extracted
- */
-function toValue(str, measurement, popperOffsets, referenceOffsets) {
-  // separate value from unit
-  var split = str.match(/((?:\-|\+)?\d*\.?\d*)(.*)/);
-  var value = +split[1];
-  var unit = split[2];
-
-  // If it's not a number it's an operator, I guess
-  if (!value) {
-    return str;
-  }
-
-  if (unit.indexOf('%') === 0) {
-    var element = void 0;
-    switch (unit) {
-      case '%p':
-        element = popperOffsets;
-        break;
-      case '%':
-      case '%r':
-      default:
-        element = referenceOffsets;
-    }
-
-    var rect = getClientRect(element);
-    return rect[measurement] / 100 * value;
-  } else if (unit === 'vh' || unit === 'vw') {
-    // if is a vh or vw, we calculate the size based on the viewport
-    var size = void 0;
-    if (unit === 'vh') {
-      size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
-    } else {
-      size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
-    }
-    return size / 100 * value;
-  } else {
-    // if is an explicit pixel unit, we get rid of the unit and keep the value
-    // if is an implicit unit, it's px, and we return just the value
-    return value;
-  }
-}
-
-/**
- * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.
- * @function
- * @memberof {modifiers~offset}
- * @private
- * @argument {String} offset
- * @argument {Object} popperOffsets
- * @argument {Object} referenceOffsets
- * @argument {String} basePlacement
- * @returns {Array} a two cells array with x and y offsets in numbers
- */
-function parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {
-  var offsets = [0, 0];
-
-  // Use height if placement is left or right and index is 0 otherwise use width
-  // in this way the first offset will use an axis and the second one
-  // will use the other one
-  var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;
-
-  // Split the offset string to obtain a list of values and operands
-  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)
-  var fragments = offset.split(/(\+|\-)/).map(function (frag) {
-    return frag.trim();
-  });
-
-  // Detect if the offset string contains a pair of values or a single one
-  // they could be separated by comma or space
-  var divider = fragments.indexOf(find(fragments, function (frag) {
-    return frag.search(/,|\s/) !== -1;
-  }));
-
-  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {
-    console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');
-  }
-
-  // If divider is found, we divide the list of values and operands to divide
-  // them by ofset X and Y.
-  var splitRegex = /\s*,\s*|\s+/;
-  var ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];
-
-  // Convert the values with units to absolute pixels to allow our computations
-  ops = ops.map(function (op, index) {
-    // Most of the units rely on the orientation of the popper
-    var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';
-    var mergeWithPrevious = false;
-    return op
-    // This aggregates any `+` or `-` sign that aren't considered operators
-    // e.g.: 10 + +5 => [10, +, +5]
-    .reduce(function (a, b) {
-      if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {
-        a[a.length - 1] = b;
-        mergeWithPrevious = true;
-        return a;
-      } else if (mergeWithPrevious) {
-        a[a.length - 1] += b;
-        mergeWithPrevious = false;
-        return a;
-      } else {
-        return a.concat(b);
-      }
-    }, [])
-    // Here we convert the string values into number values (in px)
-    .map(function (str) {
-      return toValue(str, measurement, popperOffsets, referenceOffsets);
-    });
-  });
-
-  // Loop trough the offsets arrays and execute the operations
-  ops.forEach(function (op, index) {
-    op.forEach(function (frag, index2) {
-      if (isNumeric(frag)) {
-        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);
-      }
-    });
-  });
-  return offsets;
-}
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by update method
- * @argument {Object} options - Modifiers configuration and options
- * @argument {Number|String} options.offset=0
- * The offset value as described in the modifier description
- * @returns {Object} The data object, properly modified
- */
-function offset(data, _ref) {
-  var offset = _ref.offset;
-  var placement = data.placement,
-      _data$offsets = data.offsets,
-      popper = _data$offsets.popper,
-      reference = _data$offsets.reference;
-
-  var basePlacement = placement.split('-')[0];
-
-  var offsets = void 0;
-  if (isNumeric(+offset)) {
-    offsets = [+offset, 0];
-  } else {
-    offsets = parseOffset(offset, popper, reference, basePlacement);
-  }
-
-  if (basePlacement === 'left') {
-    popper.top += offsets[0];
-    popper.left -= offsets[1];
-  } else if (basePlacement === 'right') {
-    popper.top += offsets[0];
-    popper.left += offsets[1];
-  } else if (basePlacement === 'top') {
-    popper.left += offsets[0];
-    popper.top -= offsets[1];
-  } else if (basePlacement === 'bottom') {
-    popper.left += offsets[0];
-    popper.top += offsets[1];
-  }
-
-  data.popper = popper;
-  return data;
-}
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by `update` method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The data object, properly modified
- */
-function preventOverflow(data, options) {
-  var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);
-
-  // If offsetParent is the reference element, we really want to
-  // go one step up and use the next offsetParent as reference to
-  // avoid to make this modifier completely useless and look like broken
-  if (data.instance.reference === boundariesElement) {
-    boundariesElement = getOffsetParent(boundariesElement);
-  }
-
-  var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement);
-  options.boundaries = boundaries;
-
-  var order = options.priority;
-  var popper = data.offsets.popper;
-
-  var check = {
-    primary: function primary(placement) {
-      var value = popper[placement];
-      if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {
-        value = Math.max(popper[placement], boundaries[placement]);
-      }
-      return defineProperty({}, placement, value);
-    },
-    secondary: function secondary(placement) {
-      var mainSide = placement === 'right' ? 'left' : 'top';
-      var value = popper[mainSide];
-      if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {
-        value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));
-      }
-      return defineProperty({}, mainSide, value);
-    }
-  };
-
-  order.forEach(function (placement) {
-    var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';
-    popper = _extends$1({}, popper, check[side](placement));
-  });
-
-  data.offsets.popper = popper;
-
-  return data;
-}
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by `update` method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The data object, properly modified
- */
-function shift(data) {
-  var placement = data.placement;
-  var basePlacement = placement.split('-')[0];
-  var shiftvariation = placement.split('-')[1];
-
-  // if shift shiftvariation is specified, run the modifier
-  if (shiftvariation) {
-    var _data$offsets = data.offsets,
-        reference = _data$offsets.reference,
-        popper = _data$offsets.popper;
-
-    var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
-    var side = isVertical ? 'left' : 'top';
-    var measurement = isVertical ? 'width' : 'height';
-
-    var shiftOffsets = {
-      start: defineProperty({}, side, reference[side]),
-      end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])
-    };
-
-    data.offsets.popper = _extends$1({}, popper, shiftOffsets[shiftvariation]);
-  }
-
-  return data;
-}
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by update method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The data object, properly modified
- */
-function hide(data) {
-  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {
-    return data;
-  }
-
-  var refRect = data.offsets.reference;
-  var bound = find(data.instance.modifiers, function (modifier) {
-    return modifier.name === 'preventOverflow';
-  }).boundaries;
-
-  if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {
-    // Avoid unnecessary DOM access if visibility hasn't changed
-    if (data.hide === true) {
-      return data;
-    }
-
-    data.hide = true;
-    data.attributes['x-out-of-boundaries'] = '';
-  } else {
-    // Avoid unnecessary DOM access if visibility hasn't changed
-    if (data.hide === false) {
-      return data;
-    }
-
-    data.hide = false;
-    data.attributes['x-out-of-boundaries'] = false;
-  }
-
-  return data;
-}
-
-/**
- * @function
- * @memberof Modifiers
- * @argument {Object} data - The data object generated by `update` method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {Object} The data object, properly modified
- */
-function inner(data) {
-  var placement = data.placement;
-  var basePlacement = placement.split('-')[0];
-  var _data$offsets = data.offsets,
-      popper = _data$offsets.popper,
-      reference = _data$offsets.reference;
-
-  var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;
-
-  var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;
-
-  popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);
-
-  data.placement = getOppositePlacement(placement);
-  data.offsets.popper = getClientRect(popper);
-
-  return data;
-}
-
-/**
- * Modifier function, each modifier can have a function of this type assigned
- * to its `fn` property.<br />
- * These functions will be called on each update, this means that you must
- * make sure they are performant enough to avoid performance bottlenecks.
- *
- * @function ModifierFn
- * @argument {dataObject} data - The data object generated by `update` method
- * @argument {Object} options - Modifiers configuration and options
- * @returns {dataObject} The data object, properly modified
- */
-
-/**
- * Modifiers are plugins used to alter the behavior of your poppers.<br />
- * Popper.js uses a set of 9 modifiers to provide all the basic functionalities
- * needed by the library.
- *
- * Usually you don't want to override the `order`, `fn` and `onLoad` props.
- * All the other properties are configurations that could be tweaked.
- * @namespace modifiers
- */
-var modifiers = {
-  /**
-   * Modifier used to shift the popper on the start or end of its reference
-   * element.<br />
-   * It will read the variation of the `placement` property.<br />
-   * It can be one either `-end` or `-start`.
-   * @memberof modifiers
-   * @inner
-   */
-  shift: {
-    /** @prop {number} order=100 - Index used to define the order of execution */
-    order: 100,
-    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
-    enabled: true,
-    /** @prop {ModifierFn} */
-    fn: shift
-  },
-
-  /**
-   * The `offset` modifier can shift your popper on both its axis.
-   *
-   * It accepts the following units:
-   * - `px` or unitless, interpreted as pixels
-   * - `%` or `%r`, percentage relative to the length of the reference element
-   * - `%p`, percentage relative to the length of the popper element
-   * - `vw`, CSS viewport width unit
-   * - `vh`, CSS viewport height unit
-   *
-   * For length is intended the main axis relative to the placement of the popper.<br />
-   * This means that if the placement is `top` or `bottom`, the length will be the
-   * `width`. In case of `left` or `right`, it will be the height.
-   *
-   * You can provide a single value (as `Number` or `String`), or a pair of values
-   * as `String` divided by a comma or one (or more) white spaces.<br />
-   * The latter is a deprecated method because it leads to confusion and will be
-   * removed in v2.<br />
-   * Additionally, it accepts additions and subtractions between different units.
-   * Note that multiplications and divisions aren't supported.
-   *
-   * Valid examples are:
-   * ```
-   * 10
-   * '10%'
-   * '10, 10'
-   * '10%, 10'
-   * '10 + 10%'
-   * '10 - 5vh + 3%'
-   * '-10px + 5vh, 5px - 6%'
-   * ```
-   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap
-   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.
-   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)
-   *
-   * @memberof modifiers
-   * @inner
-   */
-  offset: {
-    /** @prop {number} order=200 - Index used to define the order of execution */
-    order: 200,
-    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
-    enabled: true,
-    /** @prop {ModifierFn} */
-    fn: offset,
-    /** @prop {Number|String} offset=0
-     * The offset value as described in the modifier description
-     */
-    offset: 0
-  },
-
-  /**
-   * Modifier used to prevent the popper from being positioned outside the boundary.
-   *
-   * An scenario exists where the reference itself is not within the boundaries.<br />
-   * We can say it has "escaped the boundaries" — or just "escaped".<br />
-   * In this case we need to decide whether the popper should either:
-   *
-   * - detach from the reference and remain "trapped" in the boundaries, or
-   * - if it should ignore the boundary and "escape with its reference"
-   *
-   * When `escapeWithReference` is set to`true` and reference is completely
-   * outside its boundaries, the popper will overflow (or completely leave)
-   * the boundaries in order to remain attached to the edge of the reference.
-   *
-   * @memberof modifiers
-   * @inner
-   */
-  preventOverflow: {
-    /** @prop {number} order=300 - Index used to define the order of execution */
-    order: 300,
-    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
-    enabled: true,
-    /** @prop {ModifierFn} */
-    fn: preventOverflow,
-    /**
-     * @prop {Array} [priority=['left','right','top','bottom']]
-     * Popper will try to prevent overflow following these priorities by default,
-     * then, it could overflow on the left and on top of the `boundariesElement`
-     */
-    priority: ['left', 'right', 'top', 'bottom'],
-    /**
-     * @prop {number} padding=5
-     * Amount of pixel used to define a minimum distance between the boundaries
-     * and the popper this makes sure the popper has always a little padding
-     * between the edges of its container
-     */
-    padding: 5,
-    /**
-     * @prop {String|HTMLElement} boundariesElement='scrollParent'
-     * Boundaries used by the modifier, can be `scrollParent`, `window`,
-     * `viewport` or any DOM element.
-     */
-    boundariesElement: 'scrollParent'
-  },
-
-  /**
-   * Modifier used to make sure the reference and its popper stay near eachothers
-   * without leaving any gap between the two. Expecially useful when the arrow is
-   * enabled and you want to assure it to point to its reference element.
-   * It cares only about the first axis, you can still have poppers with margin
-   * between the popper and its reference element.
-   * @memberof modifiers
-   * @inner
-   */
-  keepTogether: {
-    /** @prop {number} order=400 - Index used to define the order of execution */
-    order: 400,
-    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
-    enabled: true,
-    /** @prop {ModifierFn} */
-    fn: keepTogether
-  },
-
-  /**
-   * This modifier is used to move the `arrowElement` of the popper to make
-   * sure it is positioned between the reference element and its popper element.
-   * It will read the outer size of the `arrowElement` node to detect how many
-   * pixels of conjuction are needed.
-   *
-   * It has no effect if no `arrowElement` is provided.
-   * @memberof modifiers
-   * @inner
-   */
-  arrow: {
-    /** @prop {number} order=500 - Index used to define the order of execution */
-    order: 500,
-    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
-    enabled: true,
-    /** @prop {ModifierFn} */
-    fn: arrow,
-    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */
-    element: '[x-arrow]'
-  },
-
-  /**
-   * Modifier used to flip the popper's placement when it starts to overlap its
-   * reference element.
-   *
-   * Requires the `preventOverflow` modifier before it in order to work.
-   *
-   * **NOTE:** this modifier will interrupt the current update cycle and will
-   * restart it if it detects the need to flip the placement.
-   * @memberof modifiers
-   * @inner
-   */
-  flip: {
-    /** @prop {number} order=600 - Index used to define the order of execution */
-    order: 600,
-    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
-    enabled: true,
-    /** @prop {ModifierFn} */
-    fn: flip,
-    /**
-     * @prop {String|Array} behavior='flip'
-     * The behavior used to change the popper's placement. It can be one of
-     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid
-     * placements (with optional variations).
-     */
-    behavior: 'flip',
-    /**
-     * @prop {number} padding=5
-     * The popper will flip if it hits the edges of the `boundariesElement`
-     */
-    padding: 5,
-    /**
-     * @prop {String|HTMLElement} boundariesElement='viewport'
-     * The element which will define the boundaries of the popper position,
-     * the popper will never be placed outside of the defined boundaries
-     * (except if keepTogether is enabled)
-     */
-    boundariesElement: 'viewport'
-  },
-
-  /**
-   * Modifier used to make the popper flow toward the inner of the reference element.
-   * By default, when this modifier is disabled, the popper will be placed outside
-   * the reference element.
-   * @memberof modifiers
-   * @inner
-   */
-  inner: {
-    /** @prop {number} order=700 - Index used to define the order of execution */
-    order: 700,
-    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */
-    enabled: false,
-    /** @prop {ModifierFn} */
-    fn: inner
-  },
-
-  /**
-   * Modifier used to hide the popper when its reference element is outside of the
-   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can
-   * be used to hide with a CSS selector the popper when its reference is
-   * out of boundaries.
-   *
-   * Requires the `preventOverflow` modifier before it in order to work.
-   * @memberof modifiers
-   * @inner
-   */
-  hide: {
-    /** @prop {number} order=800 - Index used to define the order of execution */
-    order: 800,
-    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
-    enabled: true,
-    /** @prop {ModifierFn} */
-    fn: hide
-  },
-
-  /**
-   * Computes the style that will be applied to the popper element to gets
-   * properly positioned.
-   *
-   * Note that this modifier will not touch the DOM, it just prepares the styles
-   * so that `applyStyle` modifier can apply it. This separation is useful
-   * in case you need to replace `applyStyle` with a custom implementation.
-   *
-   * This modifier has `850` as `order` value to maintain backward compatibility
-   * with previous versions of Popper.js. Expect the modifiers ordering method
-   * to change in future major versions of the library.
-   *
-   * @memberof modifiers
-   * @inner
-   */
-  computeStyle: {
-    /** @prop {number} order=850 - Index used to define the order of execution */
-    order: 850,
-    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
-    enabled: true,
-    /** @prop {ModifierFn} */
-    fn: computeStyle,
-    /**
-     * @prop {Boolean} gpuAcceleration=true
-     * If true, it uses the CSS 3d transformation to position the popper.
-     * Otherwise, it will use the `top` and `left` properties.
-     */
-    gpuAcceleration: true,
-    /**
-     * @prop {string} [x='bottom']
-     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.
-     * Change this if your popper should grow in a direction different from `bottom`
-     */
-    x: 'bottom',
-    /**
-     * @prop {string} [x='left']
-     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.
-     * Change this if your popper should grow in a direction different from `right`
-     */
-    y: 'right'
-  },
-
-  /**
-   * Applies the computed styles to the popper element.
-   *
-   * All the DOM manipulations are limited to this modifier. This is useful in case
-   * you want to integrate Popper.js inside a framework or view library and you
-   * want to delegate all the DOM manipulations to it.
-   *
-   * Note that if you disable this modifier, you must make sure the popper element
-   * has its position set to `absolute` before Popper.js can do its work!
-   *
-   * Just disable this modifier and define you own to achieve the desired effect.
-   *
-   * @memberof modifiers
-   * @inner
-   */
-  applyStyle: {
-    /** @prop {number} order=900 - Index used to define the order of execution */
-    order: 900,
-    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
-    enabled: true,
-    /** @prop {ModifierFn} */
-    fn: applyStyle,
-    /** @prop {Function} */
-    onLoad: applyStyleOnLoad,
-    /**
-     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier
-     * @prop {Boolean} gpuAcceleration=true
-     * If true, it uses the CSS 3d transformation to position the popper.
-     * Otherwise, it will use the `top` and `left` properties.
-     */
-    gpuAcceleration: undefined
-  }
-};
-
-/**
- * The `dataObject` is an object containing all the informations used by Popper.js
- * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.
- * @name dataObject
- * @property {Object} data.instance The Popper.js instance
- * @property {String} data.placement Placement applied to popper
- * @property {String} data.originalPlacement Placement originally defined on init
- * @property {Boolean} data.flipped True if popper has been flipped by flip modifier
- * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.
- * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier
- * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)
- * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)
- * @property {Object} data.boundaries Offsets of the popper boundaries
- * @property {Object} data.offsets The measurements of popper, reference and arrow elements.
- * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values
- * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values
- * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0
- */
-
-/**
- * Default options provided to Popper.js constructor.<br />
- * These can be overriden using the `options` argument of Popper.js.<br />
- * To override an option, simply pass as 3rd argument an object with the same
- * structure of this object, example:
- * ```
- * new Popper(ref, pop, {
- *   modifiers: {
- *     preventOverflow: { enabled: false }
- *   }
- * })
- * ```
- * @type {Object}
- * @static
- * @memberof Popper
- */
-var Defaults = {
-  /**
-   * Popper's placement
-   * @prop {Popper.placements} placement='bottom'
-   */
-  placement: 'bottom',
-
-  /**
-   * Whether events (resize, scroll) are initially enabled
-   * @prop {Boolean} eventsEnabled=true
-   */
-  eventsEnabled: true,
-
-  /**
-   * Set to true if you want to automatically remove the popper when
-   * you call the `destroy` method.
-   * @prop {Boolean} removeOnDestroy=false
-   */
-  removeOnDestroy: false,
-
-  /**
-   * Callback called when the popper is created.<br />
-   * By default, is set to no-op.<br />
-   * Access Popper.js instance with `data.instance`.
-   * @prop {onCreate}
-   */
-  onCreate: function onCreate() {},
-
-  /**
-   * Callback called when the popper is updated, this callback is not called
-   * on the initialization/creation of the popper, but only on subsequent
-   * updates.<br />
-   * By default, is set to no-op.<br />
-   * Access Popper.js instance with `data.instance`.
-   * @prop {onUpdate}
-   */
-  onUpdate: function onUpdate() {},
-
-  /**
-   * List of modifiers used to modify the offsets before they are applied to the popper.
-   * They provide most of the functionalities of Popper.js
-   * @prop {modifiers}
-   */
-  modifiers: modifiers
-};
-
-/**
- * @callback onCreate
- * @param {dataObject} data
- */
-
-/**
- * @callback onUpdate
- * @param {dataObject} data
- */
-
-// Utils
-// Methods
-var Popper = function () {
-  /**
-   * Create a new Popper.js instance
-   * @class Popper
-   * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper
-   * @param {HTMLElement} popper - The HTML element used as popper.
-   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)
-   * @return {Object} instance - The generated Popper.js instance
-   */
-  function Popper(reference, popper) {
-    var _this = this;
-
-    var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
-    classCallCheck(this, Popper);
-
-    this.scheduleUpdate = function () {
-      return requestAnimationFrame(_this.update);
-    };
-
-    // make update() debounced, so that it only runs at most once-per-tick
-    this.update = debounce(this.update.bind(this));
-
-    // with {} we create a new object with the options inside it
-    this.options = _extends$1({}, Popper.Defaults, options);
-
-    // init state
-    this.state = {
-      isDestroyed: false,
-      isCreated: false,
-      scrollParents: []
-    };
-
-    // get reference and popper elements (allow jQuery wrappers)
-    this.reference = reference && reference.jquery ? reference[0] : reference;
-    this.popper = popper && popper.jquery ? popper[0] : popper;
-
-    // Deep merge modifiers options
-    this.options.modifiers = {};
-    Object.keys(_extends$1({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) {
-      _this.options.modifiers[name] = _extends$1({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});
-    });
-
-    // Refactoring modifiers' list (Object => Array)
-    this.modifiers = Object.keys(this.options.modifiers).map(function (name) {
-      return _extends$1({
-        name: name
-      }, _this.options.modifiers[name]);
-    })
-    // sort the modifiers by order
-    .sort(function (a, b) {
-      return a.order - b.order;
-    });
-
-    // modifiers have the ability to execute arbitrary code when Popper.js get inited
-    // such code is executed in the same order of its modifier
-    // they could add new properties to their options configuration
-    // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!
-    this.modifiers.forEach(function (modifierOptions) {
-      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {
-        modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state);
-      }
-    });
-
-    // fire the first update to position the popper in the right place
-    this.update();
-
-    var eventsEnabled = this.options.eventsEnabled;
-    if (eventsEnabled) {
-      // setup event listeners, they will take care of update the position in specific situations
-      this.enableEventListeners();
-    }
-
-    this.state.eventsEnabled = eventsEnabled;
-  }
-
-  // We can't use class properties because they don't get listed in the
-  // class prototype and break stuff like Sinon stubs
-
-
-  createClass(Popper, [{
-    key: 'update',
-    value: function update$$1() {
-      return update.call(this);
-    }
-  }, {
-    key: 'destroy',
-    value: function destroy$$1() {
-      return destroy.call(this);
-    }
-  }, {
-    key: 'enableEventListeners',
-    value: function enableEventListeners$$1() {
-      return enableEventListeners.call(this);
-    }
-  }, {
-    key: 'disableEventListeners',
-    value: function disableEventListeners$$1() {
-      return disableEventListeners.call(this);
-    }
-
-    /**
-     * Schedule an update, it will run on the next UI update available
-     * @method scheduleUpdate
-     * @memberof Popper
-     */
-
-
-    /**
-     * Collection of utilities useful when writing custom modifiers.
-     * Starting from version 1.7, this method is available only if you
-     * include `popper-utils.js` before `popper.js`.
-     *
-     * **DEPRECATION**: This way to access PopperUtils is deprecated
-     * and will be removed in v2! Use the PopperUtils module directly instead.
-     * Due to the high instability of the methods contained in Utils, we can't
-     * guarantee them to follow semver. Use them at your own risk!
-     * @static
-     * @private
-     * @type {Object}
-     * @deprecated since version 1.8
-     * @member Utils
-     * @memberof Popper
-     */
-
-  }]);
-  return Popper;
-}();
-
-/**
- * The `referenceObject` is an object that provides an interface compatible with Popper.js
- * and lets you use it as replacement of a real DOM node.<br />
- * You can use this method to position a popper relatively to a set of coordinates
- * in case you don't have a DOM node to use as reference.
- *
- * ```
- * new Popper(referenceObject, popperNode);
- * ```
- *
- * NB: This feature isn't supported in Internet Explorer 10
- * @name referenceObject
- * @property {Function} data.getBoundingClientRect
- * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.
- * @property {number} data.clientWidth
- * An ES6 getter that will return the width of the virtual reference element.
- * @property {number} data.clientHeight
- * An ES6 getter that will return the height of the virtual reference element.
- */
-
-
-Popper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;
-Popper.placements = placements;
-Popper.Defaults = Defaults;
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): dropdown.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Dropdown = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'dropdown';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.dropdown';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key
-
-  var SPACE_KEYCODE = 32; // KeyboardEvent.which value for space key
-
-  var TAB_KEYCODE = 9; // KeyboardEvent.which value for tab key
-
-  var ARROW_UP_KEYCODE = 38; // KeyboardEvent.which value for up arrow key
-
-  var ARROW_DOWN_KEYCODE = 40; // KeyboardEvent.which value for down arrow key
-
-  var RIGHT_MOUSE_BUTTON_WHICH = 3; // MouseEvent.which value for the right button (assuming a right-handed mouse)
-
-  var REGEXP_KEYDOWN = new RegExp(ARROW_UP_KEYCODE + "|" + ARROW_DOWN_KEYCODE + "|" + ESCAPE_KEYCODE);
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    CLICK: "click" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY,
-    KEYDOWN_DATA_API: "keydown" + EVENT_KEY + DATA_API_KEY,
-    KEYUP_DATA_API: "keyup" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    DISABLED: 'disabled',
-    SHOW: 'show',
-    DROPUP: 'dropup',
-    DROPRIGHT: 'dropright',
-    DROPLEFT: 'dropleft',
-    MENURIGHT: 'dropdown-menu-right',
-    MENULEFT: 'dropdown-menu-left',
-    POSITION_STATIC: 'position-static'
-  };
-  var Selector = {
-    DATA_TOGGLE: '[data-toggle="dropdown"]',
-    FORM_CHILD: '.dropdown form',
-    MENU: '.dropdown-menu',
-    NAVBAR_NAV: '.navbar-nav',
-    VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled)'
-  };
-  var AttachmentMap = {
-    TOP: 'top-start',
-    TOPEND: 'top-end',
-    BOTTOM: 'bottom-start',
-    BOTTOMEND: 'bottom-end',
-    RIGHT: 'right-start',
-    RIGHTEND: 'right-end',
-    LEFT: 'left-start',
-    LEFTEND: 'left-end'
-  };
-  var Default = {
-    offset: 0,
-    flip: true,
-    boundary: 'scrollParent'
-  };
-  var DefaultType = {
-    offset: '(number|string|function)',
-    flip: 'boolean',
-    boundary: '(string|element)'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Dropdown =
-  /*#__PURE__*/
-  function () {
-    function Dropdown(element, config) {
-      this._element = element;
-      this._popper = null;
-      this._config = this._getConfig(config);
-      this._menu = this._getMenuElement();
-      this._inNavbar = this._detectNavbar();
-
-      this._addEventListeners();
-    } // Getters
-
-
-    var _proto = Dropdown.prototype;
-
-    // Public
-    _proto.toggle = function toggle() {
-      if (this._element.disabled || $$$1(this._element).hasClass(ClassName.DISABLED)) {
-        return;
-      }
-
-      var parent = Dropdown._getParentFromElement(this._element);
-
-      var isActive = $$$1(this._menu).hasClass(ClassName.SHOW);
-
-      Dropdown._clearMenus();
-
-      if (isActive) {
-        return;
-      }
-
-      var relatedTarget = {
-        relatedTarget: this._element
-      };
-      var showEvent = $$$1.Event(Event.SHOW, relatedTarget);
-      $$$1(parent).trigger(showEvent);
-
-      if (showEvent.isDefaultPrevented()) {
-        return;
-      } // Disable totally Popper.js for Dropdown in Navbar
-
-
-      if (!this._inNavbar) {
-        /**
-         * Check for Popper dependency
-         * Popper - https://popper.js.org
-         */
-        if (typeof Popper === 'undefined') {
-          throw new TypeError('Bootstrap dropdown require Popper.js (https://popper.js.org)');
-        }
-
-        var element = this._element; // For dropup with alignment we use the parent as popper container
-
-        if ($$$1(parent).hasClass(ClassName.DROPUP)) {
-          if ($$$1(this._menu).hasClass(ClassName.MENULEFT) || $$$1(this._menu).hasClass(ClassName.MENURIGHT)) {
-            element = parent;
-          }
-        } // If boundary is not `scrollParent`, then set position to `static`
-        // to allow the menu to "escape" the scroll parent's boundaries
-        // https://github.com/twbs/bootstrap/issues/24251
-
-
-        if (this._config.boundary !== 'scrollParent') {
-          $$$1(parent).addClass(ClassName.POSITION_STATIC);
-        }
-
-        this._popper = new Popper(element, this._menu, this._getPopperConfig());
-      } // If this is a touch-enabled device we add extra
-      // empty mouseover listeners to the body's immediate children;
-      // only needed because of broken event delegation on iOS
-      // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
-
-
-      if ('ontouchstart' in document.documentElement && $$$1(parent).closest(Selector.NAVBAR_NAV).length === 0) {
-        $$$1('body').children().on('mouseover', null, $$$1.noop);
-      }
-
-      this._element.focus();
-
-      this._element.setAttribute('aria-expanded', true);
-
-      $$$1(this._menu).toggleClass(ClassName.SHOW);
-      $$$1(parent).toggleClass(ClassName.SHOW).trigger($$$1.Event(Event.SHOWN, relatedTarget));
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      $$$1(this._element).off(EVENT_KEY);
-      this._element = null;
-      this._menu = null;
-
-      if (this._popper !== null) {
-        this._popper.destroy();
-
-        this._popper = null;
-      }
-    };
-
-    _proto.update = function update() {
-      this._inNavbar = this._detectNavbar();
-
-      if (this._popper !== null) {
-        this._popper.scheduleUpdate();
-      }
-    }; // Private
-
-
-    _proto._addEventListeners = function _addEventListeners() {
-      var _this = this;
-
-      $$$1(this._element).on(Event.CLICK, function (event) {
-        event.preventDefault();
-        event.stopPropagation();
-
-        _this.toggle();
-      });
-    };
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, this.constructor.Default, $$$1(this._element).data(), config);
-      Util.typeCheckConfig(NAME, config, this.constructor.DefaultType);
-      return config;
-    };
-
-    _proto._getMenuElement = function _getMenuElement() {
-      if (!this._menu) {
-        var parent = Dropdown._getParentFromElement(this._element);
-
-        this._menu = $$$1(parent).find(Selector.MENU)[0];
-      }
-
-      return this._menu;
-    };
-
-    _proto._getPlacement = function _getPlacement() {
-      var $parentDropdown = $$$1(this._element).parent();
-      var placement = AttachmentMap.BOTTOM; // Handle dropup
-
-      if ($parentDropdown.hasClass(ClassName.DROPUP)) {
-        placement = AttachmentMap.TOP;
-
-        if ($$$1(this._menu).hasClass(ClassName.MENURIGHT)) {
-          placement = AttachmentMap.TOPEND;
-        }
-      } else if ($parentDropdown.hasClass(ClassName.DROPRIGHT)) {
-        placement = AttachmentMap.RIGHT;
-      } else if ($parentDropdown.hasClass(ClassName.DROPLEFT)) {
-        placement = AttachmentMap.LEFT;
-      } else if ($$$1(this._menu).hasClass(ClassName.MENURIGHT)) {
-        placement = AttachmentMap.BOTTOMEND;
-      }
-
-      return placement;
-    };
-
-    _proto._detectNavbar = function _detectNavbar() {
-      return $$$1(this._element).closest('.navbar').length > 0;
-    };
-
-    _proto._getPopperConfig = function _getPopperConfig() {
-      var _this2 = this;
-
-      var offsetConf = {};
-
-      if (typeof this._config.offset === 'function') {
-        offsetConf.fn = function (data) {
-          data.offsets = _extends({}, data.offsets, _this2._config.offset(data.offsets) || {});
-          return data;
-        };
-      } else {
-        offsetConf.offset = this._config.offset;
-      }
-
-      var popperConfig = {
-        placement: this._getPlacement(),
-        modifiers: {
-          offset: offsetConf,
-          flip: {
-            enabled: this._config.flip
-          },
-          preventOverflow: {
-            boundariesElement: this._config.boundary
-          }
-        }
-      };
-      return popperConfig;
-    }; // Static
-
-
-    Dropdown._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = typeof config === 'object' ? config : null;
-
-        if (!data) {
-          data = new Dropdown(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    Dropdown._clearMenus = function _clearMenus(event) {
-      if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH || event.type === 'keyup' && event.which !== TAB_KEYCODE)) {
-        return;
-      }
-
-      var toggles = $$$1.makeArray($$$1(Selector.DATA_TOGGLE));
-
-      for (var i = 0; i < toggles.length; i++) {
-        var parent = Dropdown._getParentFromElement(toggles[i]);
-
-        var context = $$$1(toggles[i]).data(DATA_KEY);
-        var relatedTarget = {
-          relatedTarget: toggles[i]
-        };
-
-        if (!context) {
-          continue;
-        }
-
-        var dropdownMenu = context._menu;
-
-        if (!$$$1(parent).hasClass(ClassName.SHOW)) {
-          continue;
-        }
-
-        if (event && (event.type === 'click' && /input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) && $$$1.contains(parent, event.target)) {
-          continue;
-        }
-
-        var hideEvent = $$$1.Event(Event.HIDE, relatedTarget);
-        $$$1(parent).trigger(hideEvent);
-
-        if (hideEvent.isDefaultPrevented()) {
-          continue;
-        } // If this is a touch-enabled device we remove the extra
-        // empty mouseover listeners we added for iOS support
-
-
-        if ('ontouchstart' in document.documentElement) {
-          $$$1('body').children().off('mouseover', null, $$$1.noop);
-        }
-
-        toggles[i].setAttribute('aria-expanded', 'false');
-        $$$1(dropdownMenu).removeClass(ClassName.SHOW);
-        $$$1(parent).removeClass(ClassName.SHOW).trigger($$$1.Event(Event.HIDDEN, relatedTarget));
-      }
-    };
-
-    Dropdown._getParentFromElement = function _getParentFromElement(element) {
-      var parent;
-      var selector = Util.getSelectorFromElement(element);
-
-      if (selector) {
-        parent = $$$1(selector)[0];
-      }
-
-      return parent || element.parentNode;
-    }; // eslint-disable-next-line complexity
-
-
-    Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {
-      // If not input/textarea:
-      //  - And not a key in REGEXP_KEYDOWN => not a dropdown command
-      // If input/textarea:
-      //  - If space key => not a dropdown command
-      //  - If key is other than escape
-      //    - If key is not up or down => not a dropdown command
-      //    - If trigger inside the menu => not a dropdown command
-      if (/input|textarea/i.test(event.target.tagName) ? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE && (event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE || $$$1(event.target).closest(Selector.MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
-        return;
-      }
-
-      event.preventDefault();
-      event.stopPropagation();
-
-      if (this.disabled || $$$1(this).hasClass(ClassName.DISABLED)) {
-        return;
-      }
-
-      var parent = Dropdown._getParentFromElement(this);
-
-      var isActive = $$$1(parent).hasClass(ClassName.SHOW);
-
-      if (!isActive && (event.which !== ESCAPE_KEYCODE || event.which !== SPACE_KEYCODE) || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
-        if (event.which === ESCAPE_KEYCODE) {
-          var toggle = $$$1(parent).find(Selector.DATA_TOGGLE)[0];
-          $$$1(toggle).trigger('focus');
-        }
-
-        $$$1(this).trigger('click');
-        return;
-      }
-
-      var items = $$$1(parent).find(Selector.VISIBLE_ITEMS).get();
-
-      if (items.length === 0) {
-        return;
-      }
-
-      var index = items.indexOf(event.target);
-
-      if (event.which === ARROW_UP_KEYCODE && index > 0) {
-        // Up
-        index--;
-      }
-
-      if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) {
-        // Down
-        index++;
-      }
-
-      if (index < 0) {
-        index = 0;
-      }
-
-      items[index].focus();
-    };
-
-    _createClass(Dropdown, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }, {
-      key: "DefaultType",
-      get: function get() {
-        return DefaultType;
-      }
-    }]);
-    return Dropdown;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.MENU, Dropdown._dataApiKeydownHandler).on(Event.CLICK_DATA_API + " " + Event.KEYUP_DATA_API, Dropdown._clearMenus).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    event.preventDefault();
-    event.stopPropagation();
-
-    Dropdown._jQueryInterface.call($$$1(this), 'toggle');
-  }).on(Event.CLICK_DATA_API, Selector.FORM_CHILD, function (e) {
-    e.stopPropagation();
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Dropdown._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Dropdown;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Dropdown._jQueryInterface;
-  };
-
-  return Dropdown;
-}($, Popper);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): modal.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Modal = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'modal';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.modal';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 300;
-  var BACKDROP_TRANSITION_DURATION = 150;
-  var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key
-
-  var Default = {
-    backdrop: true,
-    keyboard: true,
-    focus: true,
-    show: true
-  };
-  var DefaultType = {
-    backdrop: '(boolean|string)',
-    keyboard: 'boolean',
-    focus: 'boolean',
-    show: 'boolean'
-  };
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    FOCUSIN: "focusin" + EVENT_KEY,
-    RESIZE: "resize" + EVENT_KEY,
-    CLICK_DISMISS: "click.dismiss" + EVENT_KEY,
-    KEYDOWN_DISMISS: "keydown.dismiss" + EVENT_KEY,
-    MOUSEUP_DISMISS: "mouseup.dismiss" + EVENT_KEY,
-    MOUSEDOWN_DISMISS: "mousedown.dismiss" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    SCROLLBAR_MEASURER: 'modal-scrollbar-measure',
-    BACKDROP: 'modal-backdrop',
-    OPEN: 'modal-open',
-    FADE: 'fade',
-    SHOW: 'show'
-  };
-  var Selector = {
-    DIALOG: '.modal-dialog',
-    DATA_TOGGLE: '[data-toggle="modal"]',
-    DATA_DISMISS: '[data-dismiss="modal"]',
-    FIXED_CONTENT: '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top',
-    STICKY_CONTENT: '.sticky-top',
-    NAVBAR_TOGGLER: '.navbar-toggler'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Modal =
-  /*#__PURE__*/
-  function () {
-    function Modal(element, config) {
-      this._config = this._getConfig(config);
-      this._element = element;
-      this._dialog = $$$1(element).find(Selector.DIALOG)[0];
-      this._backdrop = null;
-      this._isShown = false;
-      this._isBodyOverflowing = false;
-      this._ignoreBackdropClick = false;
-      this._originalBodyPadding = 0;
-      this._scrollbarWidth = 0;
-    } // Getters
-
-
-    var _proto = Modal.prototype;
-
-    // Public
-    _proto.toggle = function toggle(relatedTarget) {
-      return this._isShown ? this.hide() : this.show(relatedTarget);
-    };
-
-    _proto.show = function show(relatedTarget) {
-      var _this = this;
-
-      if (this._isTransitioning || this._isShown) {
-        return;
-      }
-
-      if (Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE)) {
-        this._isTransitioning = true;
-      }
-
-      var showEvent = $$$1.Event(Event.SHOW, {
-        relatedTarget: relatedTarget
-      });
-      $$$1(this._element).trigger(showEvent);
-
-      if (this._isShown || showEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      this._isShown = true;
-
-      this._checkScrollbar();
-
-      this._setScrollbar();
-
-      this._adjustDialog();
-
-      $$$1(document.body).addClass(ClassName.OPEN);
-
-      this._setEscapeEvent();
-
-      this._setResizeEvent();
-
-      $$$1(this._element).on(Event.CLICK_DISMISS, Selector.DATA_DISMISS, function (event) {
-        return _this.hide(event);
-      });
-      $$$1(this._dialog).on(Event.MOUSEDOWN_DISMISS, function () {
-        $$$1(_this._element).one(Event.MOUSEUP_DISMISS, function (event) {
-          if ($$$1(event.target).is(_this._element)) {
-            _this._ignoreBackdropClick = true;
-          }
-        });
-      });
-
-      this._showBackdrop(function () {
-        return _this._showElement(relatedTarget);
-      });
-    };
-
-    _proto.hide = function hide(event) {
-      var _this2 = this;
-
-      if (event) {
-        event.preventDefault();
-      }
-
-      if (this._isTransitioning || !this._isShown) {
-        return;
-      }
-
-      var hideEvent = $$$1.Event(Event.HIDE);
-      $$$1(this._element).trigger(hideEvent);
-
-      if (!this._isShown || hideEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      this._isShown = false;
-      var transition = Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE);
-
-      if (transition) {
-        this._isTransitioning = true;
-      }
-
-      this._setEscapeEvent();
-
-      this._setResizeEvent();
-
-      $$$1(document).off(Event.FOCUSIN);
-      $$$1(this._element).removeClass(ClassName.SHOW);
-      $$$1(this._element).off(Event.CLICK_DISMISS);
-      $$$1(this._dialog).off(Event.MOUSEDOWN_DISMISS);
-
-      if (transition) {
-        $$$1(this._element).one(Util.TRANSITION_END, function (event) {
-          return _this2._hideModal(event);
-        }).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        this._hideModal();
-      }
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      $$$1(window, document, this._element, this._backdrop).off(EVENT_KEY);
-      this._config = null;
-      this._element = null;
-      this._dialog = null;
-      this._backdrop = null;
-      this._isShown = null;
-      this._isBodyOverflowing = null;
-      this._ignoreBackdropClick = null;
-      this._scrollbarWidth = null;
-    };
-
-    _proto.handleUpdate = function handleUpdate() {
-      this._adjustDialog();
-    }; // Private
-
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
-      Util.typeCheckConfig(NAME, config, DefaultType);
-      return config;
-    };
-
-    _proto._showElement = function _showElement(relatedTarget) {
-      var _this3 = this;
-
-      var transition = Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE);
-
-      if (!this._element.parentNode || this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
-        // Don't move modal's DOM position
-        document.body.appendChild(this._element);
-      }
-
-      this._element.style.display = 'block';
-
-      this._element.removeAttribute('aria-hidden');
-
-      this._element.scrollTop = 0;
-
-      if (transition) {
-        Util.reflow(this._element);
-      }
-
-      $$$1(this._element).addClass(ClassName.SHOW);
-
-      if (this._config.focus) {
-        this._enforceFocus();
-      }
-
-      var shownEvent = $$$1.Event(Event.SHOWN, {
-        relatedTarget: relatedTarget
-      });
-
-      var transitionComplete = function transitionComplete() {
-        if (_this3._config.focus) {
-          _this3._element.focus();
-        }
-
-        _this3._isTransitioning = false;
-        $$$1(_this3._element).trigger(shownEvent);
-      };
-
-      if (transition) {
-        $$$1(this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        transitionComplete();
-      }
-    };
-
-    _proto._enforceFocus = function _enforceFocus() {
-      var _this4 = this;
-
-      $$$1(document).off(Event.FOCUSIN) // Guard against infinite focus loop
-      .on(Event.FOCUSIN, function (event) {
-        if (document !== event.target && _this4._element !== event.target && $$$1(_this4._element).has(event.target).length === 0) {
-          _this4._element.focus();
-        }
-      });
-    };
-
-    _proto._setEscapeEvent = function _setEscapeEvent() {
-      var _this5 = this;
-
-      if (this._isShown && this._config.keyboard) {
-        $$$1(this._element).on(Event.KEYDOWN_DISMISS, function (event) {
-          if (event.which === ESCAPE_KEYCODE) {
-            event.preventDefault();
-
-            _this5.hide();
-          }
-        });
-      } else if (!this._isShown) {
-        $$$1(this._element).off(Event.KEYDOWN_DISMISS);
-      }
-    };
-
-    _proto._setResizeEvent = function _setResizeEvent() {
-      var _this6 = this;
-
-      if (this._isShown) {
-        $$$1(window).on(Event.RESIZE, function (event) {
-          return _this6.handleUpdate(event);
-        });
-      } else {
-        $$$1(window).off(Event.RESIZE);
-      }
-    };
-
-    _proto._hideModal = function _hideModal() {
-      var _this7 = this;
-
-      this._element.style.display = 'none';
-
-      this._element.setAttribute('aria-hidden', true);
-
-      this._isTransitioning = false;
-
-      this._showBackdrop(function () {
-        $$$1(document.body).removeClass(ClassName.OPEN);
-
-        _this7._resetAdjustments();
-
-        _this7._resetScrollbar();
-
-        $$$1(_this7._element).trigger(Event.HIDDEN);
-      });
-    };
-
-    _proto._removeBackdrop = function _removeBackdrop() {
-      if (this._backdrop) {
-        $$$1(this._backdrop).remove();
-        this._backdrop = null;
-      }
-    };
-
-    _proto._showBackdrop = function _showBackdrop(callback) {
-      var _this8 = this;
-
-      var animate = $$$1(this._element).hasClass(ClassName.FADE) ? ClassName.FADE : '';
-
-      if (this._isShown && this._config.backdrop) {
-        var doAnimate = Util.supportsTransitionEnd() && animate;
-        this._backdrop = document.createElement('div');
-        this._backdrop.className = ClassName.BACKDROP;
-
-        if (animate) {
-          $$$1(this._backdrop).addClass(animate);
-        }
-
-        $$$1(this._backdrop).appendTo(document.body);
-        $$$1(this._element).on(Event.CLICK_DISMISS, function (event) {
-          if (_this8._ignoreBackdropClick) {
-            _this8._ignoreBackdropClick = false;
-            return;
-          }
-
-          if (event.target !== event.currentTarget) {
-            return;
-          }
-
-          if (_this8._config.backdrop === 'static') {
-            _this8._element.focus();
-          } else {
-            _this8.hide();
-          }
-        });
-
-        if (doAnimate) {
-          Util.reflow(this._backdrop);
-        }
-
-        $$$1(this._backdrop).addClass(ClassName.SHOW);
-
-        if (!callback) {
-          return;
-        }
-
-        if (!doAnimate) {
-          callback();
-          return;
-        }
-
-        $$$1(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
-      } else if (!this._isShown && this._backdrop) {
-        $$$1(this._backdrop).removeClass(ClassName.SHOW);
-
-        var callbackRemove = function callbackRemove() {
-          _this8._removeBackdrop();
-
-          if (callback) {
-            callback();
-          }
-        };
-
-        if (Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE)) {
-          $$$1(this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
-        } else {
-          callbackRemove();
-        }
-      } else if (callback) {
-        callback();
-      }
-    }; // ----------------------------------------------------------------------
-    // the following methods are used to handle overflowing modals
-    // todo (fat): these should probably be refactored out of modal.js
-    // ----------------------------------------------------------------------
-
-
-    _proto._adjustDialog = function _adjustDialog() {
-      var isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;
-
-      if (!this._isBodyOverflowing && isModalOverflowing) {
-        this._element.style.paddingLeft = this._scrollbarWidth + "px";
-      }
-
-      if (this._isBodyOverflowing && !isModalOverflowing) {
-        this._element.style.paddingRight = this._scrollbarWidth + "px";
-      }
-    };
-
-    _proto._resetAdjustments = function _resetAdjustments() {
-      this._element.style.paddingLeft = '';
-      this._element.style.paddingRight = '';
-    };
-
-    _proto._checkScrollbar = function _checkScrollbar() {
-      var rect = document.body.getBoundingClientRect();
-      this._isBodyOverflowing = rect.left + rect.right < window.innerWidth;
-      this._scrollbarWidth = this._getScrollbarWidth();
-    };
-
-    _proto._setScrollbar = function _setScrollbar() {
-      var _this9 = this;
-
-      if (this._isBodyOverflowing) {
-        // Note: DOMNode.style.paddingRight returns the actual value or '' if not set
-        //   while $(DOMNode).css('padding-right') returns the calculated value or 0 if not set
-        // Adjust fixed content padding
-        $$$1(Selector.FIXED_CONTENT).each(function (index, element) {
-          var actualPadding = $$$1(element)[0].style.paddingRight;
-          var calculatedPadding = $$$1(element).css('padding-right');
-          $$$1(element).data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + _this9._scrollbarWidth + "px");
-        }); // Adjust sticky content margin
-
-        $$$1(Selector.STICKY_CONTENT).each(function (index, element) {
-          var actualMargin = $$$1(element)[0].style.marginRight;
-          var calculatedMargin = $$$1(element).css('margin-right');
-          $$$1(element).data('margin-right', actualMargin).css('margin-right', parseFloat(calculatedMargin) - _this9._scrollbarWidth + "px");
-        }); // Adjust navbar-toggler margin
-
-        $$$1(Selector.NAVBAR_TOGGLER).each(function (index, element) {
-          var actualMargin = $$$1(element)[0].style.marginRight;
-          var calculatedMargin = $$$1(element).css('margin-right');
-          $$$1(element).data('margin-right', actualMargin).css('margin-right', parseFloat(calculatedMargin) + _this9._scrollbarWidth + "px");
-        }); // Adjust body padding
-
-        var actualPadding = document.body.style.paddingRight;
-        var calculatedPadding = $$$1('body').css('padding-right');
-        $$$1('body').data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + this._scrollbarWidth + "px");
-      }
-    };
-
-    _proto._resetScrollbar = function _resetScrollbar() {
-      // Restore fixed content padding
-      $$$1(Selector.FIXED_CONTENT).each(function (index, element) {
-        var padding = $$$1(element).data('padding-right');
-
-        if (typeof padding !== 'undefined') {
-          $$$1(element).css('padding-right', padding).removeData('padding-right');
-        }
-      }); // Restore sticky content and navbar-toggler margin
-
-      $$$1(Selector.STICKY_CONTENT + ", " + Selector.NAVBAR_TOGGLER).each(function (index, element) {
-        var margin = $$$1(element).data('margin-right');
-
-        if (typeof margin !== 'undefined') {
-          $$$1(element).css('margin-right', margin).removeData('margin-right');
-        }
-      }); // Restore body padding
-
-      var padding = $$$1('body').data('padding-right');
-
-      if (typeof padding !== 'undefined') {
-        $$$1('body').css('padding-right', padding).removeData('padding-right');
-      }
-    };
-
-    _proto._getScrollbarWidth = function _getScrollbarWidth() {
-      // thx d.walsh
-      var scrollDiv = document.createElement('div');
-      scrollDiv.className = ClassName.SCROLLBAR_MEASURER;
-      document.body.appendChild(scrollDiv);
-      var scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth;
-      document.body.removeChild(scrollDiv);
-      return scrollbarWidth;
-    }; // Static
-
-
-    Modal._jQueryInterface = function _jQueryInterface(config, relatedTarget) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = _extends({}, Modal.Default, $$$1(this).data(), typeof config === 'object' && config);
-
-        if (!data) {
-          data = new Modal(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config](relatedTarget);
-        } else if (_config.show) {
-          data.show(relatedTarget);
-        }
-      });
-    };
-
-    _createClass(Modal, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }]);
-    return Modal;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    var _this10 = this;
-
-    var target;
-    var selector = Util.getSelectorFromElement(this);
-
-    if (selector) {
-      target = $$$1(selector)[0];
-    }
-
-    var config = $$$1(target).data(DATA_KEY) ? 'toggle' : _extends({}, $$$1(target).data(), $$$1(this).data());
-
-    if (this.tagName === 'A' || this.tagName === 'AREA') {
-      event.preventDefault();
-    }
-
-    var $target = $$$1(target).one(Event.SHOW, function (showEvent) {
-      if (showEvent.isDefaultPrevented()) {
-        // Only register focus restorer if modal will actually get shown
-        return;
-      }
-
-      $target.one(Event.HIDDEN, function () {
-        if ($$$1(_this10).is(':visible')) {
-          _this10.focus();
-        }
-      });
-    });
-
-    Modal._jQueryInterface.call($$$1(target), config, this);
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Modal._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Modal;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Modal._jQueryInterface;
-  };
-
-  return Modal;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): tooltip.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Tooltip = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'tooltip';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.tooltip';
-  var EVENT_KEY = "." + DATA_KEY;
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 150;
-  var CLASS_PREFIX = 'bs-tooltip';
-  var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
-  var DefaultType = {
-    animation: 'boolean',
-    template: 'string',
-    title: '(string|element|function)',
-    trigger: 'string',
-    delay: '(number|object)',
-    html: 'boolean',
-    selector: '(string|boolean)',
-    placement: '(string|function)',
-    offset: '(number|string)',
-    container: '(string|element|boolean)',
-    fallbackPlacement: '(string|array)',
-    boundary: '(string|element)'
-  };
-  var AttachmentMap = {
-    AUTO: 'auto',
-    TOP: 'top',
-    RIGHT: 'right',
-    BOTTOM: 'bottom',
-    LEFT: 'left'
-  };
-  var Default = {
-    animation: true,
-    template: '<div class="tooltip" role="tooltip">' + '<div class="arrow"></div>' + '<div class="tooltip-inner"></div></div>',
-    trigger: 'hover focus',
-    title: '',
-    delay: 0,
-    html: false,
-    selector: false,
-    placement: 'top',
-    offset: 0,
-    container: false,
-    fallbackPlacement: 'flip',
-    boundary: 'scrollParent'
-  };
-  var HoverState = {
-    SHOW: 'show',
-    OUT: 'out'
-  };
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    INSERTED: "inserted" + EVENT_KEY,
-    CLICK: "click" + EVENT_KEY,
-    FOCUSIN: "focusin" + EVENT_KEY,
-    FOCUSOUT: "focusout" + EVENT_KEY,
-    MOUSEENTER: "mouseenter" + EVENT_KEY,
-    MOUSELEAVE: "mouseleave" + EVENT_KEY
-  };
-  var ClassName = {
-    FADE: 'fade',
-    SHOW: 'show'
-  };
-  var Selector = {
-    TOOLTIP: '.tooltip',
-    TOOLTIP_INNER: '.tooltip-inner',
-    ARROW: '.arrow'
-  };
-  var Trigger = {
-    HOVER: 'hover',
-    FOCUS: 'focus',
-    CLICK: 'click',
-    MANUAL: 'manual'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Tooltip =
-  /*#__PURE__*/
-  function () {
-    function Tooltip(element, config) {
-      /**
-       * Check for Popper dependency
-       * Popper - https://popper.js.org
-       */
-      if (typeof Popper === 'undefined') {
-        throw new TypeError('Bootstrap tooltips require Popper.js (https://popper.js.org)');
-      } // private
-
-
-      this._isEnabled = true;
-      this._timeout = 0;
-      this._hoverState = '';
-      this._activeTrigger = {};
-      this._popper = null; // Protected
-
-      this.element = element;
-      this.config = this._getConfig(config);
-      this.tip = null;
-
-      this._setListeners();
-    } // Getters
-
-
-    var _proto = Tooltip.prototype;
-
-    // Public
-    _proto.enable = function enable() {
-      this._isEnabled = true;
-    };
-
-    _proto.disable = function disable() {
-      this._isEnabled = false;
-    };
-
-    _proto.toggleEnabled = function toggleEnabled() {
-      this._isEnabled = !this._isEnabled;
-    };
-
-    _proto.toggle = function toggle(event) {
-      if (!this._isEnabled) {
-        return;
-      }
-
-      if (event) {
-        var dataKey = this.constructor.DATA_KEY;
-        var context = $$$1(event.currentTarget).data(dataKey);
-
-        if (!context) {
-          context = new this.constructor(event.currentTarget, this._getDelegateConfig());
-          $$$1(event.currentTarget).data(dataKey, context);
-        }
-
-        context._activeTrigger.click = !context._activeTrigger.click;
-
-        if (context._isWithActiveTrigger()) {
-          context._enter(null, context);
-        } else {
-          context._leave(null, context);
-        }
-      } else {
-        if ($$$1(this.getTipElement()).hasClass(ClassName.SHOW)) {
-          this._leave(null, this);
-
-          return;
-        }
-
-        this._enter(null, this);
-      }
-    };
-
-    _proto.dispose = function dispose() {
-      clearTimeout(this._timeout);
-      $$$1.removeData(this.element, this.constructor.DATA_KEY);
-      $$$1(this.element).off(this.constructor.EVENT_KEY);
-      $$$1(this.element).closest('.modal').off('hide.bs.modal');
-
-      if (this.tip) {
-        $$$1(this.tip).remove();
-      }
-
-      this._isEnabled = null;
-      this._timeout = null;
-      this._hoverState = null;
-      this._activeTrigger = null;
-
-      if (this._popper !== null) {
-        this._popper.destroy();
-      }
-
-      this._popper = null;
-      this.element = null;
-      this.config = null;
-      this.tip = null;
-    };
-
-    _proto.show = function show() {
-      var _this = this;
-
-      if ($$$1(this.element).css('display') === 'none') {
-        throw new Error('Please use show on visible elements');
-      }
-
-      var showEvent = $$$1.Event(this.constructor.Event.SHOW);
-
-      if (this.isWithContent() && this._isEnabled) {
-        $$$1(this.element).trigger(showEvent);
-        var isInTheDom = $$$1.contains(this.element.ownerDocument.documentElement, this.element);
-
-        if (showEvent.isDefaultPrevented() || !isInTheDom) {
-          return;
-        }
-
-        var tip = this.getTipElement();
-        var tipId = Util.getUID(this.constructor.NAME);
-        tip.setAttribute('id', tipId);
-        this.element.setAttribute('aria-describedby', tipId);
-        this.setContent();
-
-        if (this.config.animation) {
-          $$$1(tip).addClass(ClassName.FADE);
-        }
-
-        var placement = typeof this.config.placement === 'function' ? this.config.placement.call(this, tip, this.element) : this.config.placement;
-
-        var attachment = this._getAttachment(placement);
-
-        this.addAttachmentClass(attachment);
-        var container = this.config.container === false ? document.body : $$$1(this.config.container);
-        $$$1(tip).data(this.constructor.DATA_KEY, this);
-
-        if (!$$$1.contains(this.element.ownerDocument.documentElement, this.tip)) {
-          $$$1(tip).appendTo(container);
-        }
-
-        $$$1(this.element).trigger(this.constructor.Event.INSERTED);
-        this._popper = new Popper(this.element, tip, {
-          placement: attachment,
-          modifiers: {
-            offset: {
-              offset: this.config.offset
-            },
-            flip: {
-              behavior: this.config.fallbackPlacement
-            },
-            arrow: {
-              element: Selector.ARROW
-            },
-            preventOverflow: {
-              boundariesElement: this.config.boundary
-            }
-          },
-          onCreate: function onCreate(data) {
-            if (data.originalPlacement !== data.placement) {
-              _this._handlePopperPlacementChange(data);
-            }
-          },
-          onUpdate: function onUpdate(data) {
-            _this._handlePopperPlacementChange(data);
-          }
-        });
-        $$$1(tip).addClass(ClassName.SHOW); // If this is a touch-enabled device we add extra
-        // empty mouseover listeners to the body's immediate children;
-        // only needed because of broken event delegation on iOS
-        // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
-
-        if ('ontouchstart' in document.documentElement) {
-          $$$1('body').children().on('mouseover', null, $$$1.noop);
-        }
-
-        var complete = function complete() {
-          if (_this.config.animation) {
-            _this._fixTransition();
-          }
-
-          var prevHoverState = _this._hoverState;
-          _this._hoverState = null;
-          $$$1(_this.element).trigger(_this.constructor.Event.SHOWN);
-
-          if (prevHoverState === HoverState.OUT) {
-            _this._leave(null, _this);
-          }
-        };
-
-        if (Util.supportsTransitionEnd() && $$$1(this.tip).hasClass(ClassName.FADE)) {
-          $$$1(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(Tooltip._TRANSITION_DURATION);
-        } else {
-          complete();
-        }
-      }
-    };
-
-    _proto.hide = function hide(callback) {
-      var _this2 = this;
-
-      var tip = this.getTipElement();
-      var hideEvent = $$$1.Event(this.constructor.Event.HIDE);
-
-      var complete = function complete() {
-        if (_this2._hoverState !== HoverState.SHOW && tip.parentNode) {
-          tip.parentNode.removeChild(tip);
-        }
-
-        _this2._cleanTipClass();
-
-        _this2.element.removeAttribute('aria-describedby');
-
-        $$$1(_this2.element).trigger(_this2.constructor.Event.HIDDEN);
-
-        if (_this2._popper !== null) {
-          _this2._popper.destroy();
-        }
-
-        if (callback) {
-          callback();
-        }
-      };
-
-      $$$1(this.element).trigger(hideEvent);
-
-      if (hideEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      $$$1(tip).removeClass(ClassName.SHOW); // If this is a touch-enabled device we remove the extra
-      // empty mouseover listeners we added for iOS support
-
-      if ('ontouchstart' in document.documentElement) {
-        $$$1('body').children().off('mouseover', null, $$$1.noop);
-      }
-
-      this._activeTrigger[Trigger.CLICK] = false;
-      this._activeTrigger[Trigger.FOCUS] = false;
-      this._activeTrigger[Trigger.HOVER] = false;
-
-      if (Util.supportsTransitionEnd() && $$$1(this.tip).hasClass(ClassName.FADE)) {
-        $$$1(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        complete();
-      }
-
-      this._hoverState = '';
-    };
-
-    _proto.update = function update() {
-      if (this._popper !== null) {
-        this._popper.scheduleUpdate();
-      }
-    }; // Protected
-
-
-    _proto.isWithContent = function isWithContent() {
-      return Boolean(this.getTitle());
-    };
-
-    _proto.addAttachmentClass = function addAttachmentClass(attachment) {
-      $$$1(this.getTipElement()).addClass(CLASS_PREFIX + "-" + attachment);
-    };
-
-    _proto.getTipElement = function getTipElement() {
-      this.tip = this.tip || $$$1(this.config.template)[0];
-      return this.tip;
-    };
-
-    _proto.setContent = function setContent() {
-      var $tip = $$$1(this.getTipElement());
-      this.setElementContent($tip.find(Selector.TOOLTIP_INNER), this.getTitle());
-      $tip.removeClass(ClassName.FADE + " " + ClassName.SHOW);
-    };
-
-    _proto.setElementContent = function setElementContent($element, content) {
-      var html = this.config.html;
-
-      if (typeof content === 'object' && (content.nodeType || content.jquery)) {
-        // Content is a DOM node or a jQuery
-        if (html) {
-          if (!$$$1(content).parent().is($element)) {
-            $element.empty().append(content);
-          }
-        } else {
-          $element.text($$$1(content).text());
-        }
-      } else {
-        $element[html ? 'html' : 'text'](content);
-      }
-    };
-
-    _proto.getTitle = function getTitle() {
-      var title = this.element.getAttribute('data-original-title');
-
-      if (!title) {
-        title = typeof this.config.title === 'function' ? this.config.title.call(this.element) : this.config.title;
-      }
-
-      return title;
-    }; // Private
-
-
-    _proto._getAttachment = function _getAttachment(placement) {
-      return AttachmentMap[placement.toUpperCase()];
-    };
-
-    _proto._setListeners = function _setListeners() {
-      var _this3 = this;
-
-      var triggers = this.config.trigger.split(' ');
-      triggers.forEach(function (trigger) {
-        if (trigger === 'click') {
-          $$$1(_this3.element).on(_this3.constructor.Event.CLICK, _this3.config.selector, function (event) {
-            return _this3.toggle(event);
-          });
-        } else if (trigger !== Trigger.MANUAL) {
-          var eventIn = trigger === Trigger.HOVER ? _this3.constructor.Event.MOUSEENTER : _this3.constructor.Event.FOCUSIN;
-          var eventOut = trigger === Trigger.HOVER ? _this3.constructor.Event.MOUSELEAVE : _this3.constructor.Event.FOCUSOUT;
-          $$$1(_this3.element).on(eventIn, _this3.config.selector, function (event) {
-            return _this3._enter(event);
-          }).on(eventOut, _this3.config.selector, function (event) {
-            return _this3._leave(event);
-          });
-        }
-
-        $$$1(_this3.element).closest('.modal').on('hide.bs.modal', function () {
-          return _this3.hide();
-        });
-      });
-
-      if (this.config.selector) {
-        this.config = _extends({}, this.config, {
-          trigger: 'manual',
-          selector: ''
-        });
-      } else {
-        this._fixTitle();
-      }
-    };
-
-    _proto._fixTitle = function _fixTitle() {
-      var titleType = typeof this.element.getAttribute('data-original-title');
-
-      if (this.element.getAttribute('title') || titleType !== 'string') {
-        this.element.setAttribute('data-original-title', this.element.getAttribute('title') || '');
-        this.element.setAttribute('title', '');
-      }
-    };
-
-    _proto._enter = function _enter(event, context) {
-      var dataKey = this.constructor.DATA_KEY;
-      context = context || $$$1(event.currentTarget).data(dataKey);
-
-      if (!context) {
-        context = new this.constructor(event.currentTarget, this._getDelegateConfig());
-        $$$1(event.currentTarget).data(dataKey, context);
-      }
-
-      if (event) {
-        context._activeTrigger[event.type === 'focusin' ? Trigger.FOCUS : Trigger.HOVER] = true;
-      }
-
-      if ($$$1(context.getTipElement()).hasClass(ClassName.SHOW) || context._hoverState === HoverState.SHOW) {
-        context._hoverState = HoverState.SHOW;
-        return;
-      }
-
-      clearTimeout(context._timeout);
-      context._hoverState = HoverState.SHOW;
-
-      if (!context.config.delay || !context.config.delay.show) {
-        context.show();
-        return;
-      }
-
-      context._timeout = setTimeout(function () {
-        if (context._hoverState === HoverState.SHOW) {
-          context.show();
-        }
-      }, context.config.delay.show);
-    };
-
-    _proto._leave = function _leave(event, context) {
-      var dataKey = this.constructor.DATA_KEY;
-      context = context || $$$1(event.currentTarget).data(dataKey);
-
-      if (!context) {
-        context = new this.constructor(event.currentTarget, this._getDelegateConfig());
-        $$$1(event.currentTarget).data(dataKey, context);
-      }
-
-      if (event) {
-        context._activeTrigger[event.type === 'focusout' ? Trigger.FOCUS : Trigger.HOVER] = false;
-      }
-
-      if (context._isWithActiveTrigger()) {
-        return;
-      }
-
-      clearTimeout(context._timeout);
-      context._hoverState = HoverState.OUT;
-
-      if (!context.config.delay || !context.config.delay.hide) {
-        context.hide();
-        return;
-      }
-
-      context._timeout = setTimeout(function () {
-        if (context._hoverState === HoverState.OUT) {
-          context.hide();
-        }
-      }, context.config.delay.hide);
-    };
-
-    _proto._isWithActiveTrigger = function _isWithActiveTrigger() {
-      for (var trigger in this._activeTrigger) {
-        if (this._activeTrigger[trigger]) {
-          return true;
-        }
-      }
-
-      return false;
-    };
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, this.constructor.Default, $$$1(this.element).data(), config);
-
-      if (typeof config.delay === 'number') {
-        config.delay = {
-          show: config.delay,
-          hide: config.delay
-        };
-      }
-
-      if (typeof config.title === 'number') {
-        config.title = config.title.toString();
-      }
-
-      if (typeof config.content === 'number') {
-        config.content = config.content.toString();
-      }
-
-      Util.typeCheckConfig(NAME, config, this.constructor.DefaultType);
-      return config;
-    };
-
-    _proto._getDelegateConfig = function _getDelegateConfig() {
-      var config = {};
-
-      if (this.config) {
-        for (var key in this.config) {
-          if (this.constructor.Default[key] !== this.config[key]) {
-            config[key] = this.config[key];
-          }
-        }
-      }
-
-      return config;
-    };
-
-    _proto._cleanTipClass = function _cleanTipClass() {
-      var $tip = $$$1(this.getTipElement());
-      var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX);
-
-      if (tabClass !== null && tabClass.length > 0) {
-        $tip.removeClass(tabClass.join(''));
-      }
-    };
-
-    _proto._handlePopperPlacementChange = function _handlePopperPlacementChange(data) {
-      this._cleanTipClass();
-
-      this.addAttachmentClass(this._getAttachment(data.placement));
-    };
-
-    _proto._fixTransition = function _fixTransition() {
-      var tip = this.getTipElement();
-      var initConfigAnimation = this.config.animation;
-
-      if (tip.getAttribute('x-placement') !== null) {
-        return;
-      }
-
-      $$$1(tip).removeClass(ClassName.FADE);
-      this.config.animation = false;
-      this.hide();
-      this.show();
-      this.config.animation = initConfigAnimation;
-    }; // Static
-
-
-    Tooltip._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = typeof config === 'object' && config;
-
-        if (!data && /dispose|hide/.test(config)) {
-          return;
-        }
-
-        if (!data) {
-          data = new Tooltip(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Tooltip, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }, {
-      key: "NAME",
-      get: function get() {
-        return NAME;
-      }
-    }, {
-      key: "DATA_KEY",
-      get: function get() {
-        return DATA_KEY;
-      }
-    }, {
-      key: "Event",
-      get: function get() {
-        return Event;
-      }
-    }, {
-      key: "EVENT_KEY",
-      get: function get() {
-        return EVENT_KEY;
-      }
-    }, {
-      key: "DefaultType",
-      get: function get() {
-        return DefaultType;
-      }
-    }]);
-    return Tooltip;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1.fn[NAME] = Tooltip._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Tooltip;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Tooltip._jQueryInterface;
-  };
-
-  return Tooltip;
-}($, Popper);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): popover.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Popover = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'popover';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.popover';
-  var EVENT_KEY = "." + DATA_KEY;
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var CLASS_PREFIX = 'bs-popover';
-  var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
-  var Default = _extends({}, Tooltip.Default, {
-    placement: 'right',
-    trigger: 'click',
-    content: '',
-    template: '<div class="popover" role="tooltip">' + '<div class="arrow"></div>' + '<h3 class="popover-header"></h3>' + '<div class="popover-body"></div></div>'
-  });
-  var DefaultType = _extends({}, Tooltip.DefaultType, {
-    content: '(string|element|function)'
-  });
-  var ClassName = {
-    FADE: 'fade',
-    SHOW: 'show'
-  };
-  var Selector = {
-    TITLE: '.popover-header',
-    CONTENT: '.popover-body'
-  };
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    INSERTED: "inserted" + EVENT_KEY,
-    CLICK: "click" + EVENT_KEY,
-    FOCUSIN: "focusin" + EVENT_KEY,
-    FOCUSOUT: "focusout" + EVENT_KEY,
-    MOUSEENTER: "mouseenter" + EVENT_KEY,
-    MOUSELEAVE: "mouseleave" + EVENT_KEY
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Popover =
-  /*#__PURE__*/
-  function (_Tooltip) {
-    _inheritsLoose(Popover, _Tooltip);
-
-    function Popover() {
-      return _Tooltip.apply(this, arguments) || this;
-    }
-
-    var _proto = Popover.prototype;
-
-    // Overrides
-    _proto.isWithContent = function isWithContent() {
-      return this.getTitle() || this._getContent();
-    };
-
-    _proto.addAttachmentClass = function addAttachmentClass(attachment) {
-      $$$1(this.getTipElement()).addClass(CLASS_PREFIX + "-" + attachment);
-    };
-
-    _proto.getTipElement = function getTipElement() {
-      this.tip = this.tip || $$$1(this.config.template)[0];
-      return this.tip;
-    };
-
-    _proto.setContent = function setContent() {
-      var $tip = $$$1(this.getTipElement()); // We use append for html objects to maintain js events
-
-      this.setElementContent($tip.find(Selector.TITLE), this.getTitle());
-
-      var content = this._getContent();
-
-      if (typeof content === 'function') {
-        content = content.call(this.element);
-      }
-
-      this.setElementContent($tip.find(Selector.CONTENT), content);
-      $tip.removeClass(ClassName.FADE + " " + ClassName.SHOW);
-    }; // Private
-
-
-    _proto._getContent = function _getContent() {
-      return this.element.getAttribute('data-content') || this.config.content;
-    };
-
-    _proto._cleanTipClass = function _cleanTipClass() {
-      var $tip = $$$1(this.getTipElement());
-      var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX);
-
-      if (tabClass !== null && tabClass.length > 0) {
-        $tip.removeClass(tabClass.join(''));
-      }
-    }; // Static
-
-
-    Popover._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = typeof config === 'object' ? config : null;
-
-        if (!data && /destroy|hide/.test(config)) {
-          return;
-        }
-
-        if (!data) {
-          data = new Popover(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Popover, null, [{
-      key: "VERSION",
-      // Getters
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }, {
-      key: "NAME",
-      get: function get() {
-        return NAME;
-      }
-    }, {
-      key: "DATA_KEY",
-      get: function get() {
-        return DATA_KEY;
-      }
-    }, {
-      key: "Event",
-      get: function get() {
-        return Event;
-      }
-    }, {
-      key: "EVENT_KEY",
-      get: function get() {
-        return EVENT_KEY;
-      }
-    }, {
-      key: "DefaultType",
-      get: function get() {
-        return DefaultType;
-      }
-    }]);
-    return Popover;
-  }(Tooltip);
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1.fn[NAME] = Popover._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Popover;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Popover._jQueryInterface;
-  };
-
-  return Popover;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): scrollspy.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var ScrollSpy = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'scrollspy';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.scrollspy';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var Default = {
-    offset: 10,
-    method: 'auto',
-    target: ''
-  };
-  var DefaultType = {
-    offset: 'number',
-    method: 'string',
-    target: '(string|element)'
-  };
-  var Event = {
-    ACTIVATE: "activate" + EVENT_KEY,
-    SCROLL: "scroll" + EVENT_KEY,
-    LOAD_DATA_API: "load" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    DROPDOWN_ITEM: 'dropdown-item',
-    DROPDOWN_MENU: 'dropdown-menu',
-    ACTIVE: 'active'
-  };
-  var Selector = {
-    DATA_SPY: '[data-spy="scroll"]',
-    ACTIVE: '.active',
-    NAV_LIST_GROUP: '.nav, .list-group',
-    NAV_LINKS: '.nav-link',
-    NAV_ITEMS: '.nav-item',
-    LIST_ITEMS: '.list-group-item',
-    DROPDOWN: '.dropdown',
-    DROPDOWN_ITEMS: '.dropdown-item',
-    DROPDOWN_TOGGLE: '.dropdown-toggle'
-  };
-  var OffsetMethod = {
-    OFFSET: 'offset',
-    POSITION: 'position'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var ScrollSpy =
-  /*#__PURE__*/
-  function () {
-    function ScrollSpy(element, config) {
-      var _this = this;
-
-      this._element = element;
-      this._scrollElement = element.tagName === 'BODY' ? window : element;
-      this._config = this._getConfig(config);
-      this._selector = this._config.target + " " + Selector.NAV_LINKS + "," + (this._config.target + " " + Selector.LIST_ITEMS + ",") + (this._config.target + " " + Selector.DROPDOWN_ITEMS);
-      this._offsets = [];
-      this._targets = [];
-      this._activeTarget = null;
-      this._scrollHeight = 0;
-      $$$1(this._scrollElement).on(Event.SCROLL, function (event) {
-        return _this._process(event);
-      });
-      this.refresh();
-
-      this._process();
-    } // Getters
-
-
-    var _proto = ScrollSpy.prototype;
-
-    // Public
-    _proto.refresh = function refresh() {
-      var _this2 = this;
-
-      var autoMethod = this._scrollElement === this._scrollElement.window ? OffsetMethod.OFFSET : OffsetMethod.POSITION;
-      var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
-      var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0;
-      this._offsets = [];
-      this._targets = [];
-      this._scrollHeight = this._getScrollHeight();
-      var targets = $$$1.makeArray($$$1(this._selector));
-      targets.map(function (element) {
-        var target;
-        var targetSelector = Util.getSelectorFromElement(element);
-
-        if (targetSelector) {
-          target = $$$1(targetSelector)[0];
-        }
-
-        if (target) {
-          var targetBCR = target.getBoundingClientRect();
-
-          if (targetBCR.width || targetBCR.height) {
-            // TODO (fat): remove sketch reliance on jQuery position/offset
-            return [$$$1(target)[offsetMethod]().top + offsetBase, targetSelector];
-          }
-        }
-
-        return null;
-      }).filter(function (item) {
-        return item;
-      }).sort(function (a, b) {
-        return a[0] - b[0];
-      }).forEach(function (item) {
-        _this2._offsets.push(item[0]);
-
-        _this2._targets.push(item[1]);
-      });
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      $$$1(this._scrollElement).off(EVENT_KEY);
-      this._element = null;
-      this._scrollElement = null;
-      this._config = null;
-      this._selector = null;
-      this._offsets = null;
-      this._targets = null;
-      this._activeTarget = null;
-      this._scrollHeight = null;
-    }; // Private
-
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
-
-      if (typeof config.target !== 'string') {
-        var id = $$$1(config.target).attr('id');
-
-        if (!id) {
-          id = Util.getUID(NAME);
-          $$$1(config.target).attr('id', id);
-        }
-
-        config.target = "#" + id;
-      }
-
-      Util.typeCheckConfig(NAME, config, DefaultType);
-      return config;
-    };
-
-    _proto._getScrollTop = function _getScrollTop() {
-      return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
-    };
-
-    _proto._getScrollHeight = function _getScrollHeight() {
-      return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
-    };
-
-    _proto._getOffsetHeight = function _getOffsetHeight() {
-      return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
-    };
-
-    _proto._process = function _process() {
-      var scrollTop = this._getScrollTop() + this._config.offset;
-
-      var scrollHeight = this._getScrollHeight();
-
-      var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
-
-      if (this._scrollHeight !== scrollHeight) {
-        this.refresh();
-      }
-
-      if (scrollTop >= maxScroll) {
-        var target = this._targets[this._targets.length - 1];
-
-        if (this._activeTarget !== target) {
-          this._activate(target);
-        }
-
-        return;
-      }
-
-      if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
-        this._activeTarget = null;
-
-        this._clear();
-
-        return;
-      }
-
-      for (var i = this._offsets.length; i--;) {
-        var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);
-
-        if (isActiveTarget) {
-          this._activate(this._targets[i]);
-        }
-      }
-    };
-
-    _proto._activate = function _activate(target) {
-      this._activeTarget = target;
-
-      this._clear();
-
-      var queries = this._selector.split(','); // eslint-disable-next-line arrow-body-style
-
-
-      queries = queries.map(function (selector) {
-        return selector + "[data-target=\"" + target + "\"]," + (selector + "[href=\"" + target + "\"]");
-      });
-      var $link = $$$1(queries.join(','));
-
-      if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {
-        $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE);
-        $link.addClass(ClassName.ACTIVE);
-      } else {
-        // Set triggered link as active
-        $link.addClass(ClassName.ACTIVE); // Set triggered links parents as active
-        // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
-
-        $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_LINKS + ", " + Selector.LIST_ITEMS).addClass(ClassName.ACTIVE); // Handle special case when .nav-link is inside .nav-item
-
-        $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_ITEMS).children(Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
-      }
-
-      $$$1(this._scrollElement).trigger(Event.ACTIVATE, {
-        relatedTarget: target
-      });
-    };
-
-    _proto._clear = function _clear() {
-      $$$1(this._selector).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE);
-    }; // Static
-
-
-    ScrollSpy._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = typeof config === 'object' && config;
-
-        if (!data) {
-          data = new ScrollSpy(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(ScrollSpy, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }]);
-    return ScrollSpy;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(window).on(Event.LOAD_DATA_API, function () {
-    var scrollSpys = $$$1.makeArray($$$1(Selector.DATA_SPY));
-
-    for (var i = scrollSpys.length; i--;) {
-      var $spy = $$$1(scrollSpys[i]);
-
-      ScrollSpy._jQueryInterface.call($spy, $spy.data());
-    }
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = ScrollSpy._jQueryInterface;
-  $$$1.fn[NAME].Constructor = ScrollSpy;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return ScrollSpy._jQueryInterface;
-  };
-
-  return ScrollSpy;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): tab.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Tab = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'tab';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.tab';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 150;
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    DROPDOWN_MENU: 'dropdown-menu',
-    ACTIVE: 'active',
-    DISABLED: 'disabled',
-    FADE: 'fade',
-    SHOW: 'show'
-  };
-  var Selector = {
-    DROPDOWN: '.dropdown',
-    NAV_LIST_GROUP: '.nav, .list-group',
-    ACTIVE: '.active',
-    ACTIVE_UL: '> li > .active',
-    DATA_TOGGLE: '[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]',
-    DROPDOWN_TOGGLE: '.dropdown-toggle',
-    DROPDOWN_ACTIVE_CHILD: '> .dropdown-menu .active'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Tab =
-  /*#__PURE__*/
-  function () {
-    function Tab(element) {
-      this._element = element;
-    } // Getters
-
-
-    var _proto = Tab.prototype;
-
-    // Public
-    _proto.show = function show() {
-      var _this = this;
-
-      if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && $$$1(this._element).hasClass(ClassName.ACTIVE) || $$$1(this._element).hasClass(ClassName.DISABLED)) {
-        return;
-      }
-
-      var target;
-      var previous;
-      var listElement = $$$1(this._element).closest(Selector.NAV_LIST_GROUP)[0];
-      var selector = Util.getSelectorFromElement(this._element);
-
-      if (listElement) {
-        var itemSelector = listElement.nodeName === 'UL' ? Selector.ACTIVE_UL : Selector.ACTIVE;
-        previous = $$$1.makeArray($$$1(listElement).find(itemSelector));
-        previous = previous[previous.length - 1];
-      }
-
-      var hideEvent = $$$1.Event(Event.HIDE, {
-        relatedTarget: this._element
-      });
-      var showEvent = $$$1.Event(Event.SHOW, {
-        relatedTarget: previous
-      });
-
-      if (previous) {
-        $$$1(previous).trigger(hideEvent);
-      }
-
-      $$$1(this._element).trigger(showEvent);
-
-      if (showEvent.isDefaultPrevented() || hideEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      if (selector) {
-        target = $$$1(selector)[0];
-      }
-
-      this._activate(this._element, listElement);
-
-      var complete = function complete() {
-        var hiddenEvent = $$$1.Event(Event.HIDDEN, {
-          relatedTarget: _this._element
-        });
-        var shownEvent = $$$1.Event(Event.SHOWN, {
-          relatedTarget: previous
-        });
-        $$$1(previous).trigger(hiddenEvent);
-        $$$1(_this._element).trigger(shownEvent);
-      };
-
-      if (target) {
-        this._activate(target, target.parentNode, complete);
-      } else {
-        complete();
-      }
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      this._element = null;
-    }; // Private
-
-
-    _proto._activate = function _activate(element, container, callback) {
-      var _this2 = this;
-
-      var activeElements;
-
-      if (container.nodeName === 'UL') {
-        activeElements = $$$1(container).find(Selector.ACTIVE_UL);
-      } else {
-        activeElements = $$$1(container).children(Selector.ACTIVE);
-      }
-
-      var active = activeElements[0];
-      var isTransitioning = callback && Util.supportsTransitionEnd() && active && $$$1(active).hasClass(ClassName.FADE);
-
-      var complete = function complete() {
-        return _this2._transitionComplete(element, active, callback);
-      };
-
-      if (active && isTransitioning) {
-        $$$1(active).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        complete();
-      }
-    };
-
-    _proto._transitionComplete = function _transitionComplete(element, active, callback) {
-      if (active) {
-        $$$1(active).removeClass(ClassName.SHOW + " " + ClassName.ACTIVE);
-        var dropdownChild = $$$1(active.parentNode).find(Selector.DROPDOWN_ACTIVE_CHILD)[0];
-
-        if (dropdownChild) {
-          $$$1(dropdownChild).removeClass(ClassName.ACTIVE);
-        }
-
-        if (active.getAttribute('role') === 'tab') {
-          active.setAttribute('aria-selected', false);
-        }
-      }
-
-      $$$1(element).addClass(ClassName.ACTIVE);
-
-      if (element.getAttribute('role') === 'tab') {
-        element.setAttribute('aria-selected', true);
-      }
-
-      Util.reflow(element);
-      $$$1(element).addClass(ClassName.SHOW);
-
-      if (element.parentNode && $$$1(element.parentNode).hasClass(ClassName.DROPDOWN_MENU)) {
-        var dropdownElement = $$$1(element).closest(Selector.DROPDOWN)[0];
-
-        if (dropdownElement) {
-          $$$1(dropdownElement).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE);
-        }
-
-        element.setAttribute('aria-expanded', true);
-      }
-
-      if (callback) {
-        callback();
-      }
-    }; // Static
-
-
-    Tab._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var $this = $$$1(this);
-        var data = $this.data(DATA_KEY);
-
-        if (!data) {
-          data = new Tab(this);
-          $this.data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Tab, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }]);
-    return Tab;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    event.preventDefault();
-
-    Tab._jQueryInterface.call($$$1(this), 'show');
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Tab._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Tab;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Tab._jQueryInterface;
-  };
-
-  return Tab;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.6): index.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-(function ($$$1) {
-  if (typeof $$$1 === 'undefined') {
-    throw new TypeError('Bootstrap\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\'s JavaScript.');
-  }
-
-  var version = $$$1.fn.jquery.split(' ')[0].split('.');
-  var minMajor = 1;
-  var ltMajor = 2;
-  var minMinor = 9;
-  var minPatch = 1;
-  var maxMajor = 4;
-
-  if (version[0] < ltMajor && version[1] < minMinor || version[0] === minMajor && version[1] === minMinor && version[2] < minPatch || version[0] >= maxMajor) {
-    throw new Error('Bootstrap\'s JavaScript requires at least jQuery v1.9.1 but less than v4.0.0');
-  }
-})($);
-
-exports.Util = Util;
-exports.Alert = Alert;
-exports.Button = Button;
-exports.Carousel = Carousel;
-exports.Collapse = Collapse;
-exports.Dropdown = Dropdown;
-exports.Modal = Modal;
-exports.Popover = Popover;
-exports.Scrollspy = ScrollSpy;
-exports.Tab = Tab;
-exports.Tooltip = Tooltip;
-
-Object.defineProperty(exports, '__esModule', { value: true });
-
-})));
-//# sourceMappingURL=bootstrap.bundle.js.map
diff --git a/chall/src/js/bootstrap.bundle.min.js b/chall/src/js/bootstrap.bundle.min.js
deleted file mode 100644
index 7d50e87..0000000
--- a/chall/src/js/bootstrap.bundle.min.js
+++ /dev/null
@@ -1,7 +0,0 @@
-/*!
-  * Bootstrap v4.0.0 (https://getbootstrap.com)
-  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
-  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
-  */
-!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports,require("jquery")):"function"==typeof define&&define.amd?define(["exports","jquery"],e):e(t.bootstrap={},t.jQuery)}(this,function(t,e){"use strict";function n(t,e){for(var n=0;n<e.length;n++){var i=e[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(t,i.key,i)}}function i(t,e,i){return e&&n(t.prototype,e),i&&n(t,i),t}function r(){return(r=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var n=arguments[e];for(var i in n)Object.prototype.hasOwnProperty.call(n,i)&&(t[i]=n[i])}return t}).apply(this,arguments)}for(var o,s,a,l,c,h,f,u,d,p,g,m,_,v,E,y,b,T,C,w,I,A,D,S,O,N,k=function(t){var e=!1;function n(e){var n=this,r=!1;return t(this).one(i.TRANSITION_END,function(){r=!0}),setTimeout(function(){r||i.triggerTransitionEnd(n)},e),this}var i={TRANSITION_END:"bsTransitionEnd",getUID:function(t){do{t+=~~(1e6*Math.random())}while(document.getElementById(t));return t},getSelectorFromElement:function(e){var n,i=e.getAttribute("data-target");i&&"#"!==i||(i=e.getAttribute("href")||""),"#"===i.charAt(0)&&(n=i,i=n="function"==typeof t.escapeSelector?t.escapeSelector(n).substr(1):n.replace(/(:|\.|\[|\]|,|=|@)/g,"\\$1"));try{return t(document).find(i).length>0?i:null}catch(t){return null}},reflow:function(t){return t.offsetHeight},triggerTransitionEnd:function(n){t(n).trigger(e.end)},supportsTransitionEnd:function(){return Boolean(e)},isElement:function(t){return(t[0]||t).nodeType},typeCheckConfig:function(t,e,n){for(var r in n)if(Object.prototype.hasOwnProperty.call(n,r)){var o=n[r],s=e[r],a=s&&i.isElement(s)?"element":(l=s,{}.toString.call(l).match(/\s([a-zA-Z]+)/)[1].toLowerCase());if(!new RegExp(o).test(a))throw new Error(t.toUpperCase()+': Option "'+r+'" provided type "'+a+'" but expected type "'+o+'".')}var l}};return 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e>=n.clientWidth&&i>=n.clientHeight}),h=c.length>0?c[0].key:l[0].key,f=t.split("-")[1];return h+(f?"-"+f:"")}function ct(t,e,n){return st(n,G(e,n))}function ht(t){var e=getComputedStyle(t),n=parseFloat(e.marginTop)+parseFloat(e.marginBottom),i=parseFloat(e.marginLeft)+parseFloat(e.marginRight);return{width:t.offsetWidth+i,height:t.offsetHeight+n}}function ft(t){var e={left:"right",right:"left",bottom:"top",top:"bottom"};return t.replace(/left|right|bottom|top/g,function(t){return e[t]})}function ut(t,e,n){n=n.split("-")[0];var i=ht(t),r={width:i.width,height:i.height},o=-1!==["right","left"].indexOf(n),s=o?"top":"left",a=o?"left":"top",l=o?"height":"width",c=o?"width":"height";return r[s]=e[s]+e[l]/2-i[l]/2,r[a]=n===a?e[a]-i[c]:e[ft(a)],r}function dt(t,e){return Array.prototype.find?t.find(e):t.filter(e)[0]}function pt(t,e,n){return(void 0===n?t:t.slice(0,function(t,e,n){if(Array.prototype.findIndex)return t.findIndex(function(t){return t[e]===n});var i=dt(t,function(t){return t[e]===n});return t.indexOf(i)}(t,"name",n))).forEach(function(t){t.function&&console.warn("`modifier.function` is deprecated, use `modifier.fn`!");var n=t.function||t.fn;t.enabled&&B(n)&&(e.offsets.popper=rt(e.offsets.popper),e.offsets.reference=rt(e.offsets.reference),e=n(e,t))}),e}function gt(t,e){return t.some(function(t){var n=t.name;return t.enabled&&n===e})}function mt(t){for(var e=[!1,"ms","Webkit","Moz","O"],n=t.charAt(0).toUpperCase()+t.slice(1),i=0;i<e.length-1;i++){var r=e[i],o=r?""+r+n:t;if("undefined"!=typeof document.body.style[o])return o}return null}function _t(t){var e=t.ownerDocument;return e?e.defaultView:window}function vt(t,e,n,i){n.updateBound=i,_t(t).addEventListener("resize",n.updateBound,{passive:!0});var r=V(t);return function t(e,n,i,r){var o="BODY"===e.nodeName,s=o?e.ownerDocument.defaultView:e;s.addEventListener(n,i,{passive:!0}),o||t(V(s.parentNode),n,i,r),r.push(s)}(r,"scroll",n.updateBound,n.scrollParents),n.scrollElement=r,n.eventsEnabled=!0,n}function Et(){var t,e;this.state.eventsEnabled&&(cancelAnimationFrame(this.scheduleUpdate),this.state=(t=this.reference,e=this.state,_t(t).removeEventListener("resize",e.updateBound),e.scrollParents.forEach(function(t){t.removeEventListener("scroll",e.updateBound)}),e.updateBound=null,e.scrollParents=[],e.scrollElement=null,e.eventsEnabled=!1,e))}function yt(t){return""!==t&&!isNaN(parseFloat(t))&&isFinite(t)}function bt(t,e){Object.keys(e).forEach(function(n){var i="";-1!==["width","height","top","right","bottom","left"].indexOf(n)&&yt(e[n])&&(i="px"),t.style[n]=e[n]+i})}function Tt(t,e,n){var i=dt(t,function(t){return t.name===e}),r=!!i&&t.some(function(t){return t.name===n&&t.enabled&&t.order<i.order});if(!r){var o="`"+e+"`",s="`"+n+"`";console.warn(s+" modifier is required by "+o+" modifier in order to work, be sure to include it before "+o+"!")}return r}var Ct=["auto-start","auto","auto-end","top-start","top","top-end","right-start","right","right-end","bottom-end","bottom","bottom-start","left-end","left","left-start"],wt=Ct.slice(3);function It(t){var e=arguments.length>1&&void 0!==arguments[1]&&arguments[1],n=wt.indexOf(t),i=wt.slice(n+1).concat(wt.slice(0,n));return e?i.reverse():i}var At={FLIP:"flip",CLOCKWISE:"clockwise",COUNTERCLOCKWISE:"counterclockwise"};function Dt(t,e,n,i){var r=[0,0],o=-1!==["right","left"].indexOf(i),s=t.split(/(\+|\-)/).map(function(t){return t.trim()}),a=s.indexOf(dt(s,function(t){return-1!==t.search(/,|\s/)}));s[a]&&-1===s[a].indexOf(",")&&console.warn("Offsets separated by white space(s) are deprecated, use a comma (,) instead.");var l=/\s*,\s*|\s+/,c=-1!==a?[s.slice(0,a).concat([s[a].split(l)[0]]),[s[a].split(l)[1]].concat(s.slice(a+1))]:[s];return(c=c.map(function(t,i){var r=(1===i?!o:o)?"height":"width",s=!1;return t.reduce(function(t,e){return""===t[t.length-1]&&-1!==["+","-"].indexOf(e)?(t[t.length-1]=e,s=!0,t):s?(t[t.length-1]+=e,s=!1,t):t.concat(e)},[]).map(function(t){return function(t,e,n,i){var r=t.match(/((?:\-|\+)?\d*\.?\d*)(.*)/),o=+r[1],s=r[2];if(!o)return t;if(0===s.indexOf("%")){var a=void 0;switch(s){case"%p":a=n;break;case"%":case"%r":default:a=i}return rt(a)[e]/100*o}if("vh"===s||"vw"===s)return("vh"===s?Math.max(document.documentElement.clientHeight,window.innerHeight||0):Math.max(document.documentElement.clientWidth,window.innerWidth||0))/100*o;return o}(t,r,e,n)})})).forEach(function(t,e){t.forEach(function(n,i){yt(n)&&(r[e]+=n*("-"===t[i-1]?-1:1))})}),r}var St={placement:"bottom",eventsEnabled:!0,removeOnDestroy:!1,onCreate:function(){},onUpdate:function(){},modifiers:{shift:{order:100,enabled:!0,fn:function(t){var e=t.placement,n=e.split("-")[0],i=e.split("-")[1];if(i){var r=t.offsets,o=r.reference,s=r.popper,a=-1!==["bottom","top"].indexOf(n),l=a?"left":"top",c=a?"width":"height",h={start:nt({},l,o[l]),end:nt({},l,o[l]+o[c]-s[c])};t.offsets.popper=it({},s,h[i])}return t}},offset:{order:200,enabled:!0,fn:function(t,e){var n=e.offset,i=t.placement,r=t.offsets,o=r.popper,s=r.reference,a=i.split("-")[0],l=void 0;return l=yt(+n)?[+n,0]:Dt(n,o,s,a),"left"===a?(o.top+=l[0],o.left-=l[1]):"right"===a?(o.top+=l[0],o.left+=l[1]):"top"===a?(o.left+=l[0],o.top-=l[1]):"bottom"===a&&(o.left+=l[0],o.top+=l[1]),t.popper=o,t},offset:0},preventOverflow:{order:300,enabled:!0,fn:function(t,e){var n=e.boundariesElement||Q(t.instance.popper);t.instance.reference===n&&(n=Q(n));var i=at(t.instance.popper,t.instance.reference,e.padding,n);e.boundaries=i;var r=e.priority,o=t.offsets.popper,s={primary:function(t){var n=o[t];return o[t]<i[t]&&!e.escapeWithReference&&(n=Math.max(o[t],i[t])),nt({},t,n)},secondary:function(t){var n="right"===t?"left":"top",r=o[n];return o[t]>i[t]&&!e.escapeWithReference&&(r=Math.min(o[n],i[t]-("right"===t?o.width:o.height))),nt({},n,r)}};return r.forEach(function(t){var e=-1!==["left","top"].indexOf(t)?"primary":"secondary";o=it({},o,s[e](t))}),t.offsets.popper=o,t},priority:["left","right","top","bottom"],padding:5,boundariesElement:"scrollParent"},keepTogether:{order:400,enabled:!0,fn:function(t){var e=t.offsets,n=e.popper,i=e.reference,r=t.placement.split("-")[0],o=Math.floor,s=-1!==["top","bottom"].indexOf(r),a=s?"right":"bottom",l=s?"left":"top",c=s?"width":"height";return n[a]<o(i[l])&&(t.offsets.popper[l]=o(i[l])-n[c]),n[l]>o(i[a])&&(t.offsets.popper[l]=o(i[a])),t}},arrow:{order:500,enabled:!0,fn:function(t,e){var n;if(!Tt(t.instance.modifiers,"arrow","keepTogether"))return t;var i=e.element;if("string"==typeof i){if(!(i=t.instance.popper.querySelector(i)))return t}else if(!t.instance.popper.contains(i))return console.warn("WARNING: `arrow.element` must be child of its popper element!"),t;var r=t.placement.split("-")[0],o=t.offsets,s=o.popper,a=o.reference,l=-1!==["left","right"].indexOf(r),c=l?"height":"width",h=l?"Top":"Left",f=h.toLowerCase(),u=l?"left":"top",d=l?"bottom":"right",p=ht(i)[c];a[d]-p<s[f]&&(t.offsets.popper[f]-=s[f]-(a[d]-p)),a[f]+p>s[d]&&(t.offsets.popper[f]+=a[f]+p-s[d]),t.offsets.popper=rt(t.offsets.popper);var g=a[f]+a[c]/2-p/2,m=F(t.instance.popper),_=parseFloat(m["margin"+h],10),v=parseFloat(m["border"+h+"Width"],10),E=g-t.offsets.popper[f]-_-v;return E=Math.max(Math.min(s[c]-p,E),0),t.arrowElement=i,t.offsets.arrow=(nt(n={},f,Math.round(E)),nt(n,u,""),n),t},element:"[x-arrow]"},flip:{order:600,enabled:!0,fn:function(t,e){if(gt(t.instance.modifiers,"inner"))return t;if(t.flipped&&t.placement===t.originalPlacement)return t;var n=at(t.instance.popper,t.instance.reference,e.padding,e.boundariesElement),i=t.placement.split("-")[0],r=ft(i),o=t.placement.split("-")[1]||"",s=[];switch(e.behavior){case At.FLIP:s=[i,r];break;case At.CLOCKWISE:s=It(i);break;case At.COUNTERCLOCKWISE:s=It(i,!0);break;default:s=e.behavior}return s.forEach(function(a,l){if(i!==a||s.length===l+1)return t;i=t.placement.split("-")[0],r=ft(i);var c,h=t.offsets.popper,f=t.offsets.reference,u=Math.floor,d="left"===i&&u(h.right)>u(f.left)||"right"===i&&u(h.left)<u(f.right)||"top"===i&&u(h.bottom)>u(f.top)||"bottom"===i&&u(h.top)<u(f.bottom),p=u(h.left)<u(n.left),g=u(h.right)>u(n.right),m=u(h.top)<u(n.top),_=u(h.bottom)>u(n.bottom),v="left"===i&&p||"right"===i&&g||"top"===i&&m||"bottom"===i&&_,E=-1!==["top","bottom"].indexOf(i),y=!!e.flipVariations&&(E&&"start"===o&&p||E&&"end"===o&&g||!E&&"start"===o&&m||!E&&"end"===o&&_);(d||v||y)&&(t.flipped=!0,(d||v)&&(i=s[l+1]),y&&(o="end"===(c=o)?"start":"start"===c?"end":c),t.placement=i+(o?"-"+o:""),t.offsets.popper=it({},t.offsets.popper,ut(t.instance.popper,t.offsets.reference,t.placement)),t=pt(t.instance.modifiers,t,"flip"))}),t},behavior:"flip",padding:5,boundariesElement:"viewport"},inner:{order:700,enabled:!1,fn:function(t){var e=t.placement,n=e.split("-")[0],i=t.offsets,r=i.popper,o=i.reference,s=-1!==["left","right"].indexOf(n),a=-1===["top","left"].indexOf(n);return r[s?"left":"top"]=o[n]-(a?r[s?"width":"height"]:0),t.placement=ft(e),t.offsets.popper=rt(r),t}},hide:{order:800,enabled:!0,fn:function(t){if(!Tt(t.instance.modifiers,"hide","preventOverflow"))return t;var e=t.offsets.reference,n=dt(t.instance.modifiers,function(t){return"preventOverflow"===t.name}).boundaries;if(e.bottom<n.top||e.left>n.right||e.top>n.bottom||e.right<n.left){if(!0===t.hide)return t;t.hide=!0,t.attributes["x-out-of-boundaries"]=""}else{if(!1===t.hide)return t;t.hide=!1,t.attributes["x-out-of-boundaries"]=!1}return t}},computeStyle:{order:850,enabled:!0,fn:function(t,e){var n=e.x,i=e.y,r=t.offsets.popper,o=dt(t.instance.modifiers,function(t){return"applyStyle"===t.name}).gpuAcceleration;void 0!==o&&console.warn("WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!");var s=void 0!==o?o:e.gpuAcceleration,a=ot(Q(t.instance.popper)),l={position:r.position},c={left:Math.floor(r.left),top:Math.floor(r.top),bottom:Math.floor(r.bottom),right:Math.floor(r.right)},h="bottom"===n?"top":"bottom",f="right"===i?"left":"right",u=mt("transform"),d=void 0,p=void 0;if(p="bottom"===h?-a.height+c.bottom:c.top,d="right"===f?-a.width+c.right:c.left,s&&u)l[u]="translate3d("+d+"px, "+p+"px, 0)",l[h]=0,l[f]=0,l.willChange="transform";else{var g="bottom"===h?-1:1,m="right"===f?-1:1;l[h]=p*g,l[f]=d*m,l.willChange=h+", "+f}var _={"x-placement":t.placement};return t.attributes=it({},_,t.attributes),t.styles=it({},l,t.styles),t.arrowStyles=it({},t.offsets.arrow,t.arrowStyles),t},gpuAcceleration:!0,x:"bottom",y:"right"},applyStyle:{order:900,enabled:!0,fn:function(t){var e,n;return bt(t.instance.popper,t.styles),e=t.instance.popper,n=t.attributes,Object.keys(n).forEach(function(t){!1!==n[t]?e.setAttribute(t,n[t]):e.removeAttribute(t)}),t.arrowElement&&Object.keys(t.arrowStyles).length&&bt(t.arrowElement,t.arrowStyles),t},onLoad:function(t,e,n,i,r){var o=ct(0,e,t),s=lt(n.placement,o,e,t,n.modifiers.flip.boundariesElement,n.modifiers.flip.padding);return e.setAttribute("x-placement",s),bt(e,{position:"absolute"}),n},gpuAcceleration:void 0}}},Ot=function(){function t(e,n){var i=this,r=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};tt(this,t),this.scheduleUpdate=function(){return 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t={instance:this,styles:{},arrowStyles:{},attributes:{},flipped:!1,offsets:{}};t.offsets.reference=ct(this.state,this.popper,this.reference),t.placement=lt(this.options.placement,t.offsets.reference,this.popper,this.reference,this.options.modifiers.flip.boundariesElement,this.options.modifiers.flip.padding),t.originalPlacement=t.placement,t.offsets.popper=ut(this.popper,t.offsets.reference,t.placement),t.offsets.popper.position="absolute",t=pt(this.modifiers,t),this.state.isCreated?this.options.onUpdate(t):(this.state.isCreated=!0,this.options.onCreate(t))}}.call(this)}},{key:"destroy",value:function(){return function(){return this.state.isDestroyed=!0,gt(this.modifiers,"applyStyle")&&(this.popper.removeAttribute("x-placement"),this.popper.style.left="",this.popper.style.position="",this.popper.style.top="",this.popper.style[mt("transform")]=""),this.disableEventListeners(),this.options.removeOnDestroy&&this.popper.parentNode.removeChild(this.popper),this}.call(this)}},{key:"enableEventListeners",value:function(){return function(){this.state.eventsEnabled||(this.state=vt(this.reference,this.options,this.state,this.scheduleUpdate))}.call(this)}},{key:"disableEventListeners",value:function(){return Et.call(this)}}]),t}();Ot.Utils=("undefined"!=typeof window?window:global).PopperUtils,Ot.placements=Ct,Ot.Defaults=St;var Nt=function(t){var e="dropdown",n="bs.dropdown",o="."+n,s=t.fn[e],a=new 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e=s._getParentFromElement(this._element),n=t(this._menu).hasClass(h);if(s._clearMenus(),!n){var i={relatedTarget:this._element},r=t.Event(l.SHOW,i);if(t(e).trigger(r),!r.isDefaultPrevented()){if(!this._inNavbar){if("undefined"==typeof Ot)throw new TypeError("Bootstrap dropdown require Popper.js (https://popper.js.org)");var o=this._element;t(e).hasClass(f)&&(t(this._menu).hasClass(g)||t(this._menu).hasClass(p))&&(o=e),"scrollParent"!==this._config.boundary&&t(e).addClass(m),this._popper=new Ot(o,this._menu,this._getPopperConfig())}"ontouchstart"in document.documentElement&&0===t(e).closest(y).length&&t("body").children().on("mouseover",null,t.noop),this._element.focus(),this._element.setAttribute("aria-expanded",!0),t(this._menu).toggleClass(h),t(e).toggleClass(h).trigger(t.Event(l.SHOWN,i))}}}},v.dispose=function(){t.removeData(this._element,n),t(this._element).off(o),this._element=null,this._menu=null,null!==this._popper&&(this._popper.destroy(),this._popper=null)},v.update=function(){this._inNavbar=this._detectNavbar(),null!==this._popper&&this._popper.scheduleUpdate()},v._addEventListeners=function(){var e=this;t(this._element).on(l.CLICK,function(t){t.preventDefault(),t.stopPropagation(),e.toggle()})},v._getConfig=function(n){return n=r({},this.constructor.Default,t(this._element).data(),n),k.typeCheckConfig(e,n,this.constructor.DefaultType),n},v._getMenuElement=function(){if(!this._menu){var e=s._getParentFromElement(this._element);this._menu=t(e).find(E)[0]}return this._menu},v._getPlacement=function(){var e=t(this._element).parent(),n=w;return e.hasClass(f)?(n=T,t(this._menu).hasClass(p)&&(n=C)):e.hasClass(u)?n=A:e.hasClass(d)?n=D:t(this._menu).hasClass(p)&&(n=I),n},v._detectNavbar=function(){return t(this._element).closest(".navbar").length>0},v._getPopperConfig=function(){var t=this,e={};return"function"==typeof this._config.offset?e.fn=function(e){return e.offsets=r({},e.offsets,t._config.offset(e.offsets)||{}),e}:e.offset=this._config.offset,{placement:this._getPlacement(),modifiers:{offset:e,flip:{enabled:this._config.flip},preventOverflow:{boundariesElement:this._config.boundary}}}},s._jQueryInterface=function(e){return this.each(function(){var i=t(this).data(n);if(i||(i=new s(this,"object"==typeof e?e:null),t(this).data(n,i)),"string"==typeof e){if("undefined"==typeof i[e])throw new TypeError('No method named "'+e+'"');i[e]()}})},s._clearMenus=function(e){if(!e||3!==e.which&&("keyup"!==e.type||9===e.which))for(var i=t.makeArray(t(_)),r=0;r<i.length;r++){var 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this._activeTrigger)if(this._activeTrigger[t])return!0;return!1},T._getConfig=function(n){return"number"==typeof(n=r({},this.constructor.Default,t(this.element).data(),n)).delay&&(n.delay={show:n.delay,hide:n.delay}),"number"==typeof n.title&&(n.title=n.title.toString()),"number"==typeof n.content&&(n.content=n.content.toString()),k.typeCheckConfig(e,n,this.constructor.DefaultType),n},T._getDelegateConfig=function(){var t={};if(this.config)for(var e in this.config)this.constructor.Default[e]!==this.config[e]&&(t[e]=this.config[e]);return t},T._cleanTipClass=function(){var e=t(this.getTipElement()),n=e.attr("class").match(a);null!==n&&n.length>0&&e.removeClass(n.join(""))},T._handlePopperPlacementChange=function(t){this._cleanTipClass(),this.addAttachmentClass(this._getAttachment(t.placement))},T._fixTransition=function(){var 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RegExp("(^|\\s)bs-popover\\S+","g"),l=r({},Lt.Default,{placement:"right",trigger:"click",content:"",template:'<div class="popover" role="tooltip"><div class="arrow"></div><h3 class="popover-header"></h3><div class="popover-body"></div></div>'}),c=r({},Lt.DefaultType,{content:"(string|element|function)"}),h="fade",f="show",u=".popover-header",d=".popover-body",p={HIDE:"hide"+o,HIDDEN:"hidden"+o,SHOW:"show"+o,SHOWN:"shown"+o,INSERTED:"inserted"+o,CLICK:"click"+o,FOCUSIN:"focusin"+o,FOCUSOUT:"focusout"+o,MOUSEENTER:"mouseenter"+o,MOUSELEAVE:"mouseleave"+o},g=function(r){var s,g;function m(){return r.apply(this,arguments)||this}g=r,(s=m).prototype=Object.create(g.prototype),s.prototype.constructor=s,s.__proto__=g;var _=m.prototype;return _.isWithContent=function(){return this.getTitle()||this._getContent()},_.addAttachmentClass=function(e){t(this.getTipElement()).addClass("bs-popover-"+e)},_.getTipElement=function(){return this.tip=this.tip||t(this.config.template)[0],this.tip},_.setContent=function(){var e=t(this.getTipElement());this.setElementContent(e.find(u),this.getTitle());var n=this._getContent();"function"==typeof n&&(n=n.call(this.element)),this.setElementContent(e.find(d),n),e.removeClass(h+" "+f)},_._getContent=function(){return this.element.getAttribute("data-content")||this.config.content},_._cleanTipClass=function(){var e=t(this.getTipElement()),n=e.attr("class").match(a);null!==n&&n.length>0&&e.removeClass(n.join(""))},m._jQueryInterface=function(e){return this.each(function(){var i=t(this).data(n),r="object"==typeof e?e:null;if((i||!/destroy|hide/.test(e))&&(i||(i=new m(this,r),t(this).data(n,i)),"string"==typeof e)){if("undefined"==typeof i[e])throw new TypeError('No method named "'+e+'"');i[e]()}})},i(m,null,[{key:"VERSION",get:function(){return"4.0.0"}},{key:"Default",get:function(){return l}},{key:"NAME",get:function(){return e}},{key:"DATA_KEY",get:function(){return n}},{key:"Event",get:function(){return p}},{key:"EVENT_KEY",get:function(){return o}},{key:"DefaultType",get:function(){return c}}]),m}(Lt);return t.fn[e]=g._jQueryInterface,t.fn[e].Constructor=g,t.fn[e].noConflict=function(){return t.fn[e]=s,g._jQueryInterface},g}(e),xt=function(t){var e="scrollspy",n="bs.scrollspy",o="."+n,s=t.fn[e],a={offset:10,method:"auto",target:""},l={offset:"number",method:"string",target:"(string|element)"},c={ACTIVATE:"activate"+o,SCROLL:"scroll"+o,LOAD_DATA_API:"load"+o+".data-api"},h="dropdown-item",f="active",u={DATA_SPY:'[data-spy="scroll"]',ACTIVE:".active",NAV_LIST_GROUP:".nav, .list-group",NAV_LINKS:".nav-link",NAV_ITEMS:".nav-item",LIST_ITEMS:".list-group-item",DROPDOWN:".dropdown",DROPDOWN_ITEMS:".dropdown-item",DROPDOWN_TOGGLE:".dropdown-toggle"},d="offset",p="position",g=function(){function s(e,n){var i=this;this._element=e,this._scrollElement="BODY"===e.tagName?window:e,this._config=this._getConfig(n),this._selector=this._config.target+" "+u.NAV_LINKS+","+this._config.target+" "+u.LIST_ITEMS+","+this._config.target+" "+u.DROPDOWN_ITEMS,this._offsets=[],this._targets=[],this._activeTarget=null,this._scrollHeight=0,t(this._scrollElement).on(c.SCROLL,function(t){return i._process(t)}),this.refresh(),this._process()}var g=s.prototype;return g.refresh=function(){var e=this,n=this._scrollElement===this._scrollElement.window?d:p,i="auto"===this._config.method?n:this._config.method,r=i===p?this._getScrollTop():0;this._offsets=[],this._targets=[],this._scrollHeight=this._getScrollHeight(),t.makeArray(t(this._selector)).map(function(e){var n,o=k.getSelectorFromElement(e);if(o&&(n=t(o)[0]),n){var s=n.getBoundingClientRect();if(s.width||s.height)return[t(n)[i]().top+r,o]}return null}).filter(function(t){return t}).sort(function(t,e){return t[0]-e[0]}).forEach(function(t){e._offsets.push(t[0]),e._targets.push(t[1])})},g.dispose=function(){t.removeData(this._element,n),t(this._scrollElement).off(o),this._element=null,this._scrollElement=null,this._config=null,this._selector=null,this._offsets=null,this._targets=null,this._activeTarget=null,this._scrollHeight=null},g._getConfig=function(n){if("string"!=typeof(n=r({},a,n)).target){var i=t(n.target).attr("id");i||(i=k.getUID(e),t(n.target).attr("id",i)),n.target="#"+i}return k.typeCheckConfig(e,n,l),n},g._getScrollTop=function(){return this._scrollElement===window?this._scrollElement.pageYOffset:this._scrollElement.scrollTop},g._getScrollHeight=function(){return this._scrollElement.scrollHeight||Math.max(document.body.scrollHeight,document.documentElement.scrollHeight)},g._getOffsetHeight=function(){return this._scrollElement===window?window.innerHeight:this._scrollElement.getBoundingClientRect().height},g._process=function(){var t=this._getScrollTop()+this._config.offset,e=this._getScrollHeight(),n=this._config.offset+e-this._getOffsetHeight();if(this._scrollHeight!==e&&this.refresh(),t>=n){var i=this._targets[this._targets.length-1];this._activeTarget!==i&&this._activate(i)}else{if(this._activeTarget&&t<this._offsets[0]&&this._offsets[0]>0)return this._activeTarget=null,void this._clear();for(var r=this._offsets.length;r--;){this._activeTarget!==this._targets[r]&&t>=this._offsets[r]&&("undefined"==typeof this._offsets[r+1]||t<this._offsets[r+1])&&this._activate(this._targets[r])}}},g._activate=function(e){this._activeTarget=e,this._clear();var n=this._selector.split(",");n=n.map(function(t){return t+'[data-target="'+e+'"],'+t+'[href="'+e+'"]'});var i=t(n.join(","));i.hasClass(h)?(i.closest(u.DROPDOWN).find(u.DROPDOWN_TOGGLE).addClass(f),i.addClass(f)):(i.addClass(f),i.parents(u.NAV_LIST_GROUP).prev(u.NAV_LINKS+", "+u.LIST_ITEMS).addClass(f),i.parents(u.NAV_LIST_GROUP).prev(u.NAV_ITEMS).children(u.NAV_LINKS).addClass(f)),t(this._scrollElement).trigger(c.ACTIVATE,{relatedTarget:e})},g._clear=function(){t(this._selector).filter(u.ACTIVE).removeClass(f)},s._jQueryInterface=function(e){return this.each(function(){var i=t(this).data(n);if(i||(i=new s(this,"object"==typeof e&&e),t(this).data(n,i)),"string"==typeof e){if("undefined"==typeof i[e])throw new TypeError('No method named "'+e+'"');i[e]()}})},i(s,null,[{key:"VERSION",get:function(){return"4.0.0"}},{key:"Default",get:function(){return a}}]),s}();return t(window).on(c.LOAD_DATA_API,function(){for(var e=t.makeArray(t(u.DATA_SPY)),n=e.length;n--;){var i=t(e[n]);g._jQueryInterface.call(i,i.data())}}),t.fn[e]=g._jQueryInterface,t.fn[e].Constructor=g,t.fn[e].noConflict=function(){return t.fn[e]=s,g._jQueryInterface},g}(e),Rt=function(t){var e=".bs.tab",n=t.fn.tab,r={HIDE:"hide"+e,HIDDEN:"hidden"+e,SHOW:"show"+e,SHOWN:"shown"+e,CLICK_DATA_API:"click.bs.tab.data-api"},o="dropdown-menu",s="active",a="disabled",l="fade",c="show",h=".dropdown",f=".nav, .list-group",u=".active",d="> li > .active",p='[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]',g=".dropdown-toggle",m="> .dropdown-menu .active",_=function(){function e(t){this._element=t}var n=e.prototype;return n.show=function(){var e=this;if(!(this._element.parentNode&&this._element.parentNode.nodeType===Node.ELEMENT_NODE&&t(this._element).hasClass(s)||t(this._element).hasClass(a))){var n,i,o=t(this._element).closest(f)[0],l=k.getSelectorFromElement(this._element);if(o){var c="UL"===o.nodeName?d:u;i=(i=t.makeArray(t(o).find(c)))[i.length-1]}var h=t.Event(r.HIDE,{relatedTarget:this._element}),p=t.Event(r.SHOW,{relatedTarget:i});if(i&&t(i).trigger(h),t(this._element).trigger(p),!p.isDefaultPrevented()&&!h.isDefaultPrevented()){l&&(n=t(l)[0]),this._activate(this._element,o);var g=function(){var n=t.Event(r.HIDDEN,{relatedTarget:e._element}),o=t.Event(r.SHOWN,{relatedTarget:i});t(i).trigger(n),t(e._element).trigger(o)};n?this._activate(n,n.parentNode,g):g()}}},n.dispose=function(){t.removeData(this._element,"bs.tab"),this._element=null},n._activate=function(e,n,i){var r=this,o=("UL"===n.nodeName?t(n).find(d):t(n).children(u))[0],s=i&&k.supportsTransitionEnd()&&o&&t(o).hasClass(l),a=function(){return r._transitionComplete(e,o,i)};o&&s?t(o).one(k.TRANSITION_END,a).emulateTransitionEnd(150):a()},n._transitionComplete=function(e,n,i){if(n){t(n).removeClass(c+" "+s);var r=t(n.parentNode).find(m)[0];r&&t(r).removeClass(s),"tab"===n.getAttribute("role")&&n.setAttribute("aria-selected",!1)}if(t(e).addClass(s),"tab"===e.getAttribute("role")&&e.setAttribute("aria-selected",!0),k.reflow(e),t(e).addClass(c),e.parentNode&&t(e.parentNode).hasClass(o)){var a=t(e).closest(h)[0];a&&t(a).find(g).addClass(s),e.setAttribute("aria-expanded",!0)}i&&i()},e._jQueryInterface=function(n){return this.each(function(){var i=t(this),r=i.data("bs.tab");if(r||(r=new e(this),i.data("bs.tab",r)),"string"==typeof n){if("undefined"==typeof r[n])throw new TypeError('No method named "'+n+'"');r[n]()}})},i(e,null,[{key:"VERSION",get:function(){return"4.0.0"}}]),e}();return t(document).on(r.CLICK_DATA_API,p,function(e){e.preventDefault(),_._jQueryInterface.call(t(this),"show")}),t.fn.tab=_._jQueryInterface,t.fn.tab.Constructor=_,t.fn.tab.noConflict=function(){return t.fn.tab=n,_._jQueryInterface},_}(e);!function(t){if("undefined"==typeof t)throw new TypeError("Bootstrap's JavaScript 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-//# sourceMappingURL=bootstrap.bundle.min.js.map
\ No newline at end of file
diff --git a/chall/src/js/bootstrap.js b/chall/src/js/bootstrap.js
deleted file mode 100644
index 6d9549d..0000000
--- a/chall/src/js/bootstrap.js
+++ /dev/null
@@ -1,3894 +0,0 @@
-/*!
-  * Bootstrap v4.0.0 (https://getbootstrap.com)
-  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
-  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
-  */
-(function (global, factory) {
-	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('jquery'), require('popper.js')) :
-	typeof define === 'function' && define.amd ? define(['exports', 'jquery', 'popper.js'], factory) :
-	(factory((global.bootstrap = {}),global.jQuery,global.Popper));
-}(this, (function (exports,$,Popper) { 'use strict';
-
-$ = $ && $.hasOwnProperty('default') ? $['default'] : $;
-Popper = Popper && Popper.hasOwnProperty('default') ? Popper['default'] : Popper;
-
-function _defineProperties(target, props) {
-  for (var i = 0; i < props.length; i++) {
-    var descriptor = props[i];
-    descriptor.enumerable = descriptor.enumerable || false;
-    descriptor.configurable = true;
-    if ("value" in descriptor) descriptor.writable = true;
-    Object.defineProperty(target, descriptor.key, descriptor);
-  }
-}
-
-function _createClass(Constructor, protoProps, staticProps) {
-  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
-  if (staticProps) _defineProperties(Constructor, staticProps);
-  return Constructor;
-}
-
-function _extends() {
-  _extends = Object.assign || function (target) {
-    for (var i = 1; i < arguments.length; i++) {
-      var source = arguments[i];
-
-      for (var key in source) {
-        if (Object.prototype.hasOwnProperty.call(source, key)) {
-          target[key] = source[key];
-        }
-      }
-    }
-
-    return target;
-  };
-
-  return _extends.apply(this, arguments);
-}
-
-function _inheritsLoose(subClass, superClass) {
-  subClass.prototype = Object.create(superClass.prototype);
-  subClass.prototype.constructor = subClass;
-  subClass.__proto__ = superClass;
-}
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): util.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Util = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Private TransitionEnd Helpers
-   * ------------------------------------------------------------------------
-   */
-  var transition = false;
-  var MAX_UID = 1000000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
-
-  function toType(obj) {
-    return {}.toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase();
-  }
-
-  function getSpecialTransitionEndEvent() {
-    return {
-      bindType: transition.end,
-      delegateType: transition.end,
-      handle: function handle(event) {
-        if ($$$1(event.target).is(this)) {
-          return event.handleObj.handler.apply(this, arguments); // eslint-disable-line prefer-rest-params
-        }
-
-        return undefined; // eslint-disable-line no-undefined
-      }
-    };
-  }
-
-  function transitionEndTest() {
-    if (typeof window !== 'undefined' && window.QUnit) {
-      return false;
-    }
-
-    return {
-      end: 'transitionend'
-    };
-  }
-
-  function transitionEndEmulator(duration) {
-    var _this = this;
-
-    var called = false;
-    $$$1(this).one(Util.TRANSITION_END, function () {
-      called = true;
-    });
-    setTimeout(function () {
-      if (!called) {
-        Util.triggerTransitionEnd(_this);
-      }
-    }, duration);
-    return this;
-  }
-
-  function setTransitionEndSupport() {
-    transition = transitionEndTest();
-    $$$1.fn.emulateTransitionEnd = transitionEndEmulator;
-
-    if (Util.supportsTransitionEnd()) {
-      $$$1.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent();
-    }
-  }
-
-  function escapeId(selector) {
-    // We escape IDs in case of special selectors (selector = '#myId:something')
-    // $.escapeSelector does not exist in jQuery < 3
-    selector = typeof $$$1.escapeSelector === 'function' ? $$$1.escapeSelector(selector).substr(1) : selector.replace(/(:|\.|\[|\]|,|=|@)/g, '\\$1');
-    return selector;
-  }
-  /**
-   * --------------------------------------------------------------------------
-   * Public Util Api
-   * --------------------------------------------------------------------------
-   */
-
-
-  var Util = {
-    TRANSITION_END: 'bsTransitionEnd',
-    getUID: function getUID(prefix) {
-      do {
-        // eslint-disable-next-line no-bitwise
-        prefix += ~~(Math.random() * MAX_UID); // "~~" acts like a faster Math.floor() here
-      } while (document.getElementById(prefix));
-
-      return prefix;
-    },
-    getSelectorFromElement: function getSelectorFromElement(element) {
-      var selector = element.getAttribute('data-target');
-
-      if (!selector || selector === '#') {
-        selector = element.getAttribute('href') || '';
-      } // If it's an ID
-
-
-      if (selector.charAt(0) === '#') {
-        selector = escapeId(selector);
-      }
-
-      try {
-        var $selector = $$$1(document).find(selector);
-        return $selector.length > 0 ? selector : null;
-      } catch (err) {
-        return null;
-      }
-    },
-    reflow: function reflow(element) {
-      return element.offsetHeight;
-    },
-    triggerTransitionEnd: function triggerTransitionEnd(element) {
-      $$$1(element).trigger(transition.end);
-    },
-    supportsTransitionEnd: function supportsTransitionEnd() {
-      return Boolean(transition);
-    },
-    isElement: function isElement(obj) {
-      return (obj[0] || obj).nodeType;
-    },
-    typeCheckConfig: function typeCheckConfig(componentName, config, configTypes) {
-      for (var property in configTypes) {
-        if (Object.prototype.hasOwnProperty.call(configTypes, property)) {
-          var expectedTypes = configTypes[property];
-          var value = config[property];
-          var valueType = value && Util.isElement(value) ? 'element' : toType(value);
-
-          if (!new RegExp(expectedTypes).test(valueType)) {
-            throw new Error(componentName.toUpperCase() + ": " + ("Option \"" + property + "\" provided type \"" + valueType + "\" ") + ("but expected type \"" + expectedTypes + "\"."));
-          }
-        }
-      }
-    }
-  };
-  setTransitionEndSupport();
-  return Util;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): alert.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Alert = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'alert';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.alert';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 150;
-  var Selector = {
-    DISMISS: '[data-dismiss="alert"]'
-  };
-  var Event = {
-    CLOSE: "close" + EVENT_KEY,
-    CLOSED: "closed" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    ALERT: 'alert',
-    FADE: 'fade',
-    SHOW: 'show'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Alert =
-  /*#__PURE__*/
-  function () {
-    function Alert(element) {
-      this._element = element;
-    } // Getters
-
-
-    var _proto = Alert.prototype;
-
-    // Public
-    _proto.close = function close(element) {
-      element = element || this._element;
-
-      var rootElement = this._getRootElement(element);
-
-      var customEvent = this._triggerCloseEvent(rootElement);
-
-      if (customEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      this._removeElement(rootElement);
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      this._element = null;
-    }; // Private
-
-
-    _proto._getRootElement = function _getRootElement(element) {
-      var selector = Util.getSelectorFromElement(element);
-      var parent = false;
-
-      if (selector) {
-        parent = $$$1(selector)[0];
-      }
-
-      if (!parent) {
-        parent = $$$1(element).closest("." + ClassName.ALERT)[0];
-      }
-
-      return parent;
-    };
-
-    _proto._triggerCloseEvent = function _triggerCloseEvent(element) {
-      var closeEvent = $$$1.Event(Event.CLOSE);
-      $$$1(element).trigger(closeEvent);
-      return closeEvent;
-    };
-
-    _proto._removeElement = function _removeElement(element) {
-      var _this = this;
-
-      $$$1(element).removeClass(ClassName.SHOW);
-
-      if (!Util.supportsTransitionEnd() || !$$$1(element).hasClass(ClassName.FADE)) {
-        this._destroyElement(element);
-
-        return;
-      }
-
-      $$$1(element).one(Util.TRANSITION_END, function (event) {
-        return _this._destroyElement(element, event);
-      }).emulateTransitionEnd(TRANSITION_DURATION);
-    };
-
-    _proto._destroyElement = function _destroyElement(element) {
-      $$$1(element).detach().trigger(Event.CLOSED).remove();
-    }; // Static
-
-
-    Alert._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var $element = $$$1(this);
-        var data = $element.data(DATA_KEY);
-
-        if (!data) {
-          data = new Alert(this);
-          $element.data(DATA_KEY, data);
-        }
-
-        if (config === 'close') {
-          data[config](this);
-        }
-      });
-    };
-
-    Alert._handleDismiss = function _handleDismiss(alertInstance) {
-      return function (event) {
-        if (event) {
-          event.preventDefault();
-        }
-
-        alertInstance.close(this);
-      };
-    };
-
-    _createClass(Alert, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }]);
-    return Alert;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DISMISS, Alert._handleDismiss(new Alert()));
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Alert._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Alert;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Alert._jQueryInterface;
-  };
-
-  return Alert;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): button.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Button = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'button';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.button';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var ClassName = {
-    ACTIVE: 'active',
-    BUTTON: 'btn',
-    FOCUS: 'focus'
-  };
-  var Selector = {
-    DATA_TOGGLE_CARROT: '[data-toggle^="button"]',
-    DATA_TOGGLE: '[data-toggle="buttons"]',
-    INPUT: 'input',
-    ACTIVE: '.active',
-    BUTTON: '.btn'
-  };
-  var Event = {
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY,
-    FOCUS_BLUR_DATA_API: "focus" + EVENT_KEY + DATA_API_KEY + " " + ("blur" + EVENT_KEY + DATA_API_KEY)
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Button =
-  /*#__PURE__*/
-  function () {
-    function Button(element) {
-      this._element = element;
-    } // Getters
-
-
-    var _proto = Button.prototype;
-
-    // Public
-    _proto.toggle = function toggle() {
-      var triggerChangeEvent = true;
-      var addAriaPressed = true;
-      var rootElement = $$$1(this._element).closest(Selector.DATA_TOGGLE)[0];
-
-      if (rootElement) {
-        var input = $$$1(this._element).find(Selector.INPUT)[0];
-
-        if (input) {
-          if (input.type === 'radio') {
-            if (input.checked && $$$1(this._element).hasClass(ClassName.ACTIVE)) {
-              triggerChangeEvent = false;
-            } else {
-              var activeElement = $$$1(rootElement).find(Selector.ACTIVE)[0];
-
-              if (activeElement) {
-                $$$1(activeElement).removeClass(ClassName.ACTIVE);
-              }
-            }
-          }
-
-          if (triggerChangeEvent) {
-            if (input.hasAttribute('disabled') || rootElement.hasAttribute('disabled') || input.classList.contains('disabled') || rootElement.classList.contains('disabled')) {
-              return;
-            }
-
-            input.checked = !$$$1(this._element).hasClass(ClassName.ACTIVE);
-            $$$1(input).trigger('change');
-          }
-
-          input.focus();
-          addAriaPressed = false;
-        }
-      }
-
-      if (addAriaPressed) {
-        this._element.setAttribute('aria-pressed', !$$$1(this._element).hasClass(ClassName.ACTIVE));
-      }
-
-      if (triggerChangeEvent) {
-        $$$1(this._element).toggleClass(ClassName.ACTIVE);
-      }
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      this._element = null;
-    }; // Static
-
-
-    Button._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        if (!data) {
-          data = new Button(this);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (config === 'toggle') {
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Button, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }]);
-    return Button;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE_CARROT, function (event) {
-    event.preventDefault();
-    var button = event.target;
-
-    if (!$$$1(button).hasClass(ClassName.BUTTON)) {
-      button = $$$1(button).closest(Selector.BUTTON);
-    }
-
-    Button._jQueryInterface.call($$$1(button), 'toggle');
-  }).on(Event.FOCUS_BLUR_DATA_API, Selector.DATA_TOGGLE_CARROT, function (event) {
-    var button = $$$1(event.target).closest(Selector.BUTTON)[0];
-    $$$1(button).toggleClass(ClassName.FOCUS, /^focus(in)?$/.test(event.type));
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Button._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Button;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Button._jQueryInterface;
-  };
-
-  return Button;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): carousel.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Carousel = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'carousel';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.carousel';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 600;
-  var ARROW_LEFT_KEYCODE = 37; // KeyboardEvent.which value for left arrow key
-
-  var ARROW_RIGHT_KEYCODE = 39; // KeyboardEvent.which value for right arrow key
-
-  var TOUCHEVENT_COMPAT_WAIT = 500; // Time for mouse compat events to fire after touch
-
-  var Default = {
-    interval: 5000,
-    keyboard: true,
-    slide: false,
-    pause: 'hover',
-    wrap: true
-  };
-  var DefaultType = {
-    interval: '(number|boolean)',
-    keyboard: 'boolean',
-    slide: '(boolean|string)',
-    pause: '(string|boolean)',
-    wrap: 'boolean'
-  };
-  var Direction = {
-    NEXT: 'next',
-    PREV: 'prev',
-    LEFT: 'left',
-    RIGHT: 'right'
-  };
-  var Event = {
-    SLIDE: "slide" + EVENT_KEY,
-    SLID: "slid" + EVENT_KEY,
-    KEYDOWN: "keydown" + EVENT_KEY,
-    MOUSEENTER: "mouseenter" + EVENT_KEY,
-    MOUSELEAVE: "mouseleave" + EVENT_KEY,
-    TOUCHEND: "touchend" + EVENT_KEY,
-    LOAD_DATA_API: "load" + EVENT_KEY + DATA_API_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    CAROUSEL: 'carousel',
-    ACTIVE: 'active',
-    SLIDE: 'slide',
-    RIGHT: 'carousel-item-right',
-    LEFT: 'carousel-item-left',
-    NEXT: 'carousel-item-next',
-    PREV: 'carousel-item-prev',
-    ITEM: 'carousel-item'
-  };
-  var Selector = {
-    ACTIVE: '.active',
-    ACTIVE_ITEM: '.active.carousel-item',
-    ITEM: '.carousel-item',
-    NEXT_PREV: '.carousel-item-next, .carousel-item-prev',
-    INDICATORS: '.carousel-indicators',
-    DATA_SLIDE: '[data-slide], [data-slide-to]',
-    DATA_RIDE: '[data-ride="carousel"]'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Carousel =
-  /*#__PURE__*/
-  function () {
-    function Carousel(element, config) {
-      this._items = null;
-      this._interval = null;
-      this._activeElement = null;
-      this._isPaused = false;
-      this._isSliding = false;
-      this.touchTimeout = null;
-      this._config = this._getConfig(config);
-      this._element = $$$1(element)[0];
-      this._indicatorsElement = $$$1(this._element).find(Selector.INDICATORS)[0];
-
-      this._addEventListeners();
-    } // Getters
-
-
-    var _proto = Carousel.prototype;
-
-    // Public
-    _proto.next = function next() {
-      if (!this._isSliding) {
-        this._slide(Direction.NEXT);
-      }
-    };
-
-    _proto.nextWhenVisible = function nextWhenVisible() {
-      // Don't call next when the page isn't visible
-      // or the carousel or its parent isn't visible
-      if (!document.hidden && $$$1(this._element).is(':visible') && $$$1(this._element).css('visibility') !== 'hidden') {
-        this.next();
-      }
-    };
-
-    _proto.prev = function prev() {
-      if (!this._isSliding) {
-        this._slide(Direction.PREV);
-      }
-    };
-
-    _proto.pause = function pause(event) {
-      if (!event) {
-        this._isPaused = true;
-      }
-
-      if ($$$1(this._element).find(Selector.NEXT_PREV)[0] && Util.supportsTransitionEnd()) {
-        Util.triggerTransitionEnd(this._element);
-        this.cycle(true);
-      }
-
-      clearInterval(this._interval);
-      this._interval = null;
-    };
-
-    _proto.cycle = function cycle(event) {
-      if (!event) {
-        this._isPaused = false;
-      }
-
-      if (this._interval) {
-        clearInterval(this._interval);
-        this._interval = null;
-      }
-
-      if (this._config.interval && !this._isPaused) {
-        this._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);
-      }
-    };
-
-    _proto.to = function to(index) {
-      var _this = this;
-
-      this._activeElement = $$$1(this._element).find(Selector.ACTIVE_ITEM)[0];
-
-      var activeIndex = this._getItemIndex(this._activeElement);
-
-      if (index > this._items.length - 1 || index < 0) {
-        return;
-      }
-
-      if (this._isSliding) {
-        $$$1(this._element).one(Event.SLID, function () {
-          return _this.to(index);
-        });
-        return;
-      }
-
-      if (activeIndex === index) {
-        this.pause();
-        this.cycle();
-        return;
-      }
-
-      var direction = index > activeIndex ? Direction.NEXT : Direction.PREV;
-
-      this._slide(direction, this._items[index]);
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1(this._element).off(EVENT_KEY);
-      $$$1.removeData(this._element, DATA_KEY);
-      this._items = null;
-      this._config = null;
-      this._element = null;
-      this._interval = null;
-      this._isPaused = null;
-      this._isSliding = null;
-      this._activeElement = null;
-      this._indicatorsElement = null;
-    }; // Private
-
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
-      Util.typeCheckConfig(NAME, config, DefaultType);
-      return config;
-    };
-
-    _proto._addEventListeners = function _addEventListeners() {
-      var _this2 = this;
-
-      if (this._config.keyboard) {
-        $$$1(this._element).on(Event.KEYDOWN, function (event) {
-          return _this2._keydown(event);
-        });
-      }
-
-      if (this._config.pause === 'hover') {
-        $$$1(this._element).on(Event.MOUSEENTER, function (event) {
-          return _this2.pause(event);
-        }).on(Event.MOUSELEAVE, function (event) {
-          return _this2.cycle(event);
-        });
-
-        if ('ontouchstart' in document.documentElement) {
-          // If it's a touch-enabled device, mouseenter/leave are fired as
-          // part of the mouse compatibility events on first tap - the carousel
-          // would stop cycling until user tapped out of it;
-          // here, we listen for touchend, explicitly pause the carousel
-          // (as if it's the second time we tap on it, mouseenter compat event
-          // is NOT fired) and after a timeout (to allow for mouse compatibility
-          // events to fire) we explicitly restart cycling
-          $$$1(this._element).on(Event.TOUCHEND, function () {
-            _this2.pause();
-
-            if (_this2.touchTimeout) {
-              clearTimeout(_this2.touchTimeout);
-            }
-
-            _this2.touchTimeout = setTimeout(function (event) {
-              return _this2.cycle(event);
-            }, TOUCHEVENT_COMPAT_WAIT + _this2._config.interval);
-          });
-        }
-      }
-    };
-
-    _proto._keydown = function _keydown(event) {
-      if (/input|textarea/i.test(event.target.tagName)) {
-        return;
-      }
-
-      switch (event.which) {
-        case ARROW_LEFT_KEYCODE:
-          event.preventDefault();
-          this.prev();
-          break;
-
-        case ARROW_RIGHT_KEYCODE:
-          event.preventDefault();
-          this.next();
-          break;
-
-        default:
-      }
-    };
-
-    _proto._getItemIndex = function _getItemIndex(element) {
-      this._items = $$$1.makeArray($$$1(element).parent().find(Selector.ITEM));
-      return this._items.indexOf(element);
-    };
-
-    _proto._getItemByDirection = function _getItemByDirection(direction, activeElement) {
-      var isNextDirection = direction === Direction.NEXT;
-      var isPrevDirection = direction === Direction.PREV;
-
-      var activeIndex = this._getItemIndex(activeElement);
-
-      var lastItemIndex = this._items.length - 1;
-      var isGoingToWrap = isPrevDirection && activeIndex === 0 || isNextDirection && activeIndex === lastItemIndex;
-
-      if (isGoingToWrap && !this._config.wrap) {
-        return activeElement;
-      }
-
-      var delta = direction === Direction.PREV ? -1 : 1;
-      var itemIndex = (activeIndex + delta) % this._items.length;
-      return itemIndex === -1 ? this._items[this._items.length - 1] : this._items[itemIndex];
-    };
-
-    _proto._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, eventDirectionName) {
-      var targetIndex = this._getItemIndex(relatedTarget);
-
-      var fromIndex = this._getItemIndex($$$1(this._element).find(Selector.ACTIVE_ITEM)[0]);
-
-      var slideEvent = $$$1.Event(Event.SLIDE, {
-        relatedTarget: relatedTarget,
-        direction: eventDirectionName,
-        from: fromIndex,
-        to: targetIndex
-      });
-      $$$1(this._element).trigger(slideEvent);
-      return slideEvent;
-    };
-
-    _proto._setActiveIndicatorElement = function _setActiveIndicatorElement(element) {
-      if (this._indicatorsElement) {
-        $$$1(this._indicatorsElement).find(Selector.ACTIVE).removeClass(ClassName.ACTIVE);
-
-        var nextIndicator = this._indicatorsElement.children[this._getItemIndex(element)];
-
-        if (nextIndicator) {
-          $$$1(nextIndicator).addClass(ClassName.ACTIVE);
-        }
-      }
-    };
-
-    _proto._slide = function _slide(direction, element) {
-      var _this3 = this;
-
-      var activeElement = $$$1(this._element).find(Selector.ACTIVE_ITEM)[0];
-
-      var activeElementIndex = this._getItemIndex(activeElement);
-
-      var nextElement = element || activeElement && this._getItemByDirection(direction, activeElement);
-
-      var nextElementIndex = this._getItemIndex(nextElement);
-
-      var isCycling = Boolean(this._interval);
-      var directionalClassName;
-      var orderClassName;
-      var eventDirectionName;
-
-      if (direction === Direction.NEXT) {
-        directionalClassName = ClassName.LEFT;
-        orderClassName = ClassName.NEXT;
-        eventDirectionName = Direction.LEFT;
-      } else {
-        directionalClassName = ClassName.RIGHT;
-        orderClassName = ClassName.PREV;
-        eventDirectionName = Direction.RIGHT;
-      }
-
-      if (nextElement && $$$1(nextElement).hasClass(ClassName.ACTIVE)) {
-        this._isSliding = false;
-        return;
-      }
-
-      var slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName);
-
-      if (slideEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      if (!activeElement || !nextElement) {
-        // Some weirdness is happening, so we bail
-        return;
-      }
-
-      this._isSliding = true;
-
-      if (isCycling) {
-        this.pause();
-      }
-
-      this._setActiveIndicatorElement(nextElement);
-
-      var slidEvent = $$$1.Event(Event.SLID, {
-        relatedTarget: nextElement,
-        direction: eventDirectionName,
-        from: activeElementIndex,
-        to: nextElementIndex
-      });
-
-      if (Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.SLIDE)) {
-        $$$1(nextElement).addClass(orderClassName);
-        Util.reflow(nextElement);
-        $$$1(activeElement).addClass(directionalClassName);
-        $$$1(nextElement).addClass(directionalClassName);
-        $$$1(activeElement).one(Util.TRANSITION_END, function () {
-          $$$1(nextElement).removeClass(directionalClassName + " " + orderClassName).addClass(ClassName.ACTIVE);
-          $$$1(activeElement).removeClass(ClassName.ACTIVE + " " + orderClassName + " " + directionalClassName);
-          _this3._isSliding = false;
-          setTimeout(function () {
-            return $$$1(_this3._element).trigger(slidEvent);
-          }, 0);
-        }).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        $$$1(activeElement).removeClass(ClassName.ACTIVE);
-        $$$1(nextElement).addClass(ClassName.ACTIVE);
-        this._isSliding = false;
-        $$$1(this._element).trigger(slidEvent);
-      }
-
-      if (isCycling) {
-        this.cycle();
-      }
-    }; // Static
-
-
-    Carousel._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = _extends({}, Default, $$$1(this).data());
-
-        if (typeof config === 'object') {
-          _config = _extends({}, _config, config);
-        }
-
-        var action = typeof config === 'string' ? config : _config.slide;
-
-        if (!data) {
-          data = new Carousel(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'number') {
-          data.to(config);
-        } else if (typeof action === 'string') {
-          if (typeof data[action] === 'undefined') {
-            throw new TypeError("No method named \"" + action + "\"");
-          }
-
-          data[action]();
-        } else if (_config.interval) {
-          data.pause();
-          data.cycle();
-        }
-      });
-    };
-
-    Carousel._dataApiClickHandler = function _dataApiClickHandler(event) {
-      var selector = Util.getSelectorFromElement(this);
-
-      if (!selector) {
-        return;
-      }
-
-      var target = $$$1(selector)[0];
-
-      if (!target || !$$$1(target).hasClass(ClassName.CAROUSEL)) {
-        return;
-      }
-
-      var config = _extends({}, $$$1(target).data(), $$$1(this).data());
-      var slideIndex = this.getAttribute('data-slide-to');
-
-      if (slideIndex) {
-        config.interval = false;
-      }
-
-      Carousel._jQueryInterface.call($$$1(target), config);
-
-      if (slideIndex) {
-        $$$1(target).data(DATA_KEY).to(slideIndex);
-      }
-
-      event.preventDefault();
-    };
-
-    _createClass(Carousel, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }]);
-    return Carousel;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_SLIDE, Carousel._dataApiClickHandler);
-  $$$1(window).on(Event.LOAD_DATA_API, function () {
-    $$$1(Selector.DATA_RIDE).each(function () {
-      var $carousel = $$$1(this);
-
-      Carousel._jQueryInterface.call($carousel, $carousel.data());
-    });
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Carousel._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Carousel;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Carousel._jQueryInterface;
-  };
-
-  return Carousel;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): collapse.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Collapse = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'collapse';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.collapse';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 600;
-  var Default = {
-    toggle: true,
-    parent: ''
-  };
-  var DefaultType = {
-    toggle: 'boolean',
-    parent: '(string|element)'
-  };
-  var Event = {
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    SHOW: 'show',
-    COLLAPSE: 'collapse',
-    COLLAPSING: 'collapsing',
-    COLLAPSED: 'collapsed'
-  };
-  var Dimension = {
-    WIDTH: 'width',
-    HEIGHT: 'height'
-  };
-  var Selector = {
-    ACTIVES: '.show, .collapsing',
-    DATA_TOGGLE: '[data-toggle="collapse"]'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Collapse =
-  /*#__PURE__*/
-  function () {
-    function Collapse(element, config) {
-      this._isTransitioning = false;
-      this._element = element;
-      this._config = this._getConfig(config);
-      this._triggerArray = $$$1.makeArray($$$1("[data-toggle=\"collapse\"][href=\"#" + element.id + "\"]," + ("[data-toggle=\"collapse\"][data-target=\"#" + element.id + "\"]")));
-      var tabToggles = $$$1(Selector.DATA_TOGGLE);
-
-      for (var i = 0; i < tabToggles.length; i++) {
-        var elem = tabToggles[i];
-        var selector = Util.getSelectorFromElement(elem);
-
-        if (selector !== null && $$$1(selector).filter(element).length > 0) {
-          this._selector = selector;
-
-          this._triggerArray.push(elem);
-        }
-      }
-
-      this._parent = this._config.parent ? this._getParent() : null;
-
-      if (!this._config.parent) {
-        this._addAriaAndCollapsedClass(this._element, this._triggerArray);
-      }
-
-      if (this._config.toggle) {
-        this.toggle();
-      }
-    } // Getters
-
-
-    var _proto = Collapse.prototype;
-
-    // Public
-    _proto.toggle = function toggle() {
-      if ($$$1(this._element).hasClass(ClassName.SHOW)) {
-        this.hide();
-      } else {
-        this.show();
-      }
-    };
-
-    _proto.show = function show() {
-      var _this = this;
-
-      if (this._isTransitioning || $$$1(this._element).hasClass(ClassName.SHOW)) {
-        return;
-      }
-
-      var actives;
-      var activesData;
-
-      if (this._parent) {
-        actives = $$$1.makeArray($$$1(this._parent).find(Selector.ACTIVES).filter("[data-parent=\"" + this._config.parent + "\"]"));
-
-        if (actives.length === 0) {
-          actives = null;
-        }
-      }
-
-      if (actives) {
-        activesData = $$$1(actives).not(this._selector).data(DATA_KEY);
-
-        if (activesData && activesData._isTransitioning) {
-          return;
-        }
-      }
-
-      var startEvent = $$$1.Event(Event.SHOW);
-      $$$1(this._element).trigger(startEvent);
-
-      if (startEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      if (actives) {
-        Collapse._jQueryInterface.call($$$1(actives).not(this._selector), 'hide');
-
-        if (!activesData) {
-          $$$1(actives).data(DATA_KEY, null);
-        }
-      }
-
-      var dimension = this._getDimension();
-
-      $$$1(this._element).removeClass(ClassName.COLLAPSE).addClass(ClassName.COLLAPSING);
-      this._element.style[dimension] = 0;
-
-      if (this._triggerArray.length > 0) {
-        $$$1(this._triggerArray).removeClass(ClassName.COLLAPSED).attr('aria-expanded', true);
-      }
-
-      this.setTransitioning(true);
-
-      var complete = function complete() {
-        $$$1(_this._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).addClass(ClassName.SHOW);
-        _this._element.style[dimension] = '';
-
-        _this.setTransitioning(false);
-
-        $$$1(_this._element).trigger(Event.SHOWN);
-      };
-
-      if (!Util.supportsTransitionEnd()) {
-        complete();
-        return;
-      }
-
-      var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);
-      var scrollSize = "scroll" + capitalizedDimension;
-      $$$1(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
-      this._element.style[dimension] = this._element[scrollSize] + "px";
-    };
-
-    _proto.hide = function hide() {
-      var _this2 = this;
-
-      if (this._isTransitioning || !$$$1(this._element).hasClass(ClassName.SHOW)) {
-        return;
-      }
-
-      var startEvent = $$$1.Event(Event.HIDE);
-      $$$1(this._element).trigger(startEvent);
-
-      if (startEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      var dimension = this._getDimension();
-
-      this._element.style[dimension] = this._element.getBoundingClientRect()[dimension] + "px";
-      Util.reflow(this._element);
-      $$$1(this._element).addClass(ClassName.COLLAPSING).removeClass(ClassName.COLLAPSE).removeClass(ClassName.SHOW);
-
-      if (this._triggerArray.length > 0) {
-        for (var i = 0; i < this._triggerArray.length; i++) {
-          var trigger = this._triggerArray[i];
-          var selector = Util.getSelectorFromElement(trigger);
-
-          if (selector !== null) {
-            var $elem = $$$1(selector);
-
-            if (!$elem.hasClass(ClassName.SHOW)) {
-              $$$1(trigger).addClass(ClassName.COLLAPSED).attr('aria-expanded', false);
-            }
-          }
-        }
-      }
-
-      this.setTransitioning(true);
-
-      var complete = function complete() {
-        _this2.setTransitioning(false);
-
-        $$$1(_this2._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).trigger(Event.HIDDEN);
-      };
-
-      this._element.style[dimension] = '';
-
-      if (!Util.supportsTransitionEnd()) {
-        complete();
-        return;
-      }
-
-      $$$1(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
-    };
-
-    _proto.setTransitioning = function setTransitioning(isTransitioning) {
-      this._isTransitioning = isTransitioning;
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      this._config = null;
-      this._parent = null;
-      this._element = null;
-      this._triggerArray = null;
-      this._isTransitioning = null;
-    }; // Private
-
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
-      config.toggle = Boolean(config.toggle); // Coerce string values
-
-      Util.typeCheckConfig(NAME, config, DefaultType);
-      return config;
-    };
-
-    _proto._getDimension = function _getDimension() {
-      var hasWidth = $$$1(this._element).hasClass(Dimension.WIDTH);
-      return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT;
-    };
-
-    _proto._getParent = function _getParent() {
-      var _this3 = this;
-
-      var parent = null;
-
-      if (Util.isElement(this._config.parent)) {
-        parent = this._config.parent; // It's a jQuery object
-
-        if (typeof this._config.parent.jquery !== 'undefined') {
-          parent = this._config.parent[0];
-        }
-      } else {
-        parent = $$$1(this._config.parent)[0];
-      }
-
-      var selector = "[data-toggle=\"collapse\"][data-parent=\"" + this._config.parent + "\"]";
-      $$$1(parent).find(selector).each(function (i, element) {
-        _this3._addAriaAndCollapsedClass(Collapse._getTargetFromElement(element), [element]);
-      });
-      return parent;
-    };
-
-    _proto._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
-      if (element) {
-        var isOpen = $$$1(element).hasClass(ClassName.SHOW);
-
-        if (triggerArray.length > 0) {
-          $$$1(triggerArray).toggleClass(ClassName.COLLAPSED, !isOpen).attr('aria-expanded', isOpen);
-        }
-      }
-    }; // Static
-
-
-    Collapse._getTargetFromElement = function _getTargetFromElement(element) {
-      var selector = Util.getSelectorFromElement(element);
-      return selector ? $$$1(selector)[0] : null;
-    };
-
-    Collapse._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var $this = $$$1(this);
-        var data = $this.data(DATA_KEY);
-
-        var _config = _extends({}, Default, $this.data(), typeof config === 'object' && config);
-
-        if (!data && _config.toggle && /show|hide/.test(config)) {
-          _config.toggle = false;
-        }
-
-        if (!data) {
-          data = new Collapse(this, _config);
-          $this.data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Collapse, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }]);
-    return Collapse;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    // preventDefault only for <a> elements (which change the URL) not inside the collapsible element
-    if (event.currentTarget.tagName === 'A') {
-      event.preventDefault();
-    }
-
-    var $trigger = $$$1(this);
-    var selector = Util.getSelectorFromElement(this);
-    $$$1(selector).each(function () {
-      var $target = $$$1(this);
-      var data = $target.data(DATA_KEY);
-      var config = data ? 'toggle' : $trigger.data();
-
-      Collapse._jQueryInterface.call($target, config);
-    });
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Collapse._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Collapse;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Collapse._jQueryInterface;
-  };
-
-  return Collapse;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): dropdown.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Dropdown = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'dropdown';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.dropdown';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key
-
-  var SPACE_KEYCODE = 32; // KeyboardEvent.which value for space key
-
-  var TAB_KEYCODE = 9; // KeyboardEvent.which value for tab key
-
-  var ARROW_UP_KEYCODE = 38; // KeyboardEvent.which value for up arrow key
-
-  var ARROW_DOWN_KEYCODE = 40; // KeyboardEvent.which value for down arrow key
-
-  var RIGHT_MOUSE_BUTTON_WHICH = 3; // MouseEvent.which value for the right button (assuming a right-handed mouse)
-
-  var REGEXP_KEYDOWN = new RegExp(ARROW_UP_KEYCODE + "|" + ARROW_DOWN_KEYCODE + "|" + ESCAPE_KEYCODE);
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    CLICK: "click" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY,
-    KEYDOWN_DATA_API: "keydown" + EVENT_KEY + DATA_API_KEY,
-    KEYUP_DATA_API: "keyup" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    DISABLED: 'disabled',
-    SHOW: 'show',
-    DROPUP: 'dropup',
-    DROPRIGHT: 'dropright',
-    DROPLEFT: 'dropleft',
-    MENURIGHT: 'dropdown-menu-right',
-    MENULEFT: 'dropdown-menu-left',
-    POSITION_STATIC: 'position-static'
-  };
-  var Selector = {
-    DATA_TOGGLE: '[data-toggle="dropdown"]',
-    FORM_CHILD: '.dropdown form',
-    MENU: '.dropdown-menu',
-    NAVBAR_NAV: '.navbar-nav',
-    VISIBLE_ITEMS: '.dropdown-menu .dropdown-item:not(.disabled)'
-  };
-  var AttachmentMap = {
-    TOP: 'top-start',
-    TOPEND: 'top-end',
-    BOTTOM: 'bottom-start',
-    BOTTOMEND: 'bottom-end',
-    RIGHT: 'right-start',
-    RIGHTEND: 'right-end',
-    LEFT: 'left-start',
-    LEFTEND: 'left-end'
-  };
-  var Default = {
-    offset: 0,
-    flip: true,
-    boundary: 'scrollParent'
-  };
-  var DefaultType = {
-    offset: '(number|string|function)',
-    flip: 'boolean',
-    boundary: '(string|element)'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Dropdown =
-  /*#__PURE__*/
-  function () {
-    function Dropdown(element, config) {
-      this._element = element;
-      this._popper = null;
-      this._config = this._getConfig(config);
-      this._menu = this._getMenuElement();
-      this._inNavbar = this._detectNavbar();
-
-      this._addEventListeners();
-    } // Getters
-
-
-    var _proto = Dropdown.prototype;
-
-    // Public
-    _proto.toggle = function toggle() {
-      if (this._element.disabled || $$$1(this._element).hasClass(ClassName.DISABLED)) {
-        return;
-      }
-
-      var parent = Dropdown._getParentFromElement(this._element);
-
-      var isActive = $$$1(this._menu).hasClass(ClassName.SHOW);
-
-      Dropdown._clearMenus();
-
-      if (isActive) {
-        return;
-      }
-
-      var relatedTarget = {
-        relatedTarget: this._element
-      };
-      var showEvent = $$$1.Event(Event.SHOW, relatedTarget);
-      $$$1(parent).trigger(showEvent);
-
-      if (showEvent.isDefaultPrevented()) {
-        return;
-      } // Disable totally Popper.js for Dropdown in Navbar
-
-
-      if (!this._inNavbar) {
-        /**
-         * Check for Popper dependency
-         * Popper - https://popper.js.org
-         */
-        if (typeof Popper === 'undefined') {
-          throw new TypeError('Bootstrap dropdown require Popper.js (https://popper.js.org)');
-        }
-
-        var element = this._element; // For dropup with alignment we use the parent as popper container
-
-        if ($$$1(parent).hasClass(ClassName.DROPUP)) {
-          if ($$$1(this._menu).hasClass(ClassName.MENULEFT) || $$$1(this._menu).hasClass(ClassName.MENURIGHT)) {
-            element = parent;
-          }
-        } // If boundary is not `scrollParent`, then set position to `static`
-        // to allow the menu to "escape" the scroll parent's boundaries
-        // https://github.com/twbs/bootstrap/issues/24251
-
-
-        if (this._config.boundary !== 'scrollParent') {
-          $$$1(parent).addClass(ClassName.POSITION_STATIC);
-        }
-
-        this._popper = new Popper(element, this._menu, this._getPopperConfig());
-      } // If this is a touch-enabled device we add extra
-      // empty mouseover listeners to the body's immediate children;
-      // only needed because of broken event delegation on iOS
-      // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
-
-
-      if ('ontouchstart' in document.documentElement && $$$1(parent).closest(Selector.NAVBAR_NAV).length === 0) {
-        $$$1('body').children().on('mouseover', null, $$$1.noop);
-      }
-
-      this._element.focus();
-
-      this._element.setAttribute('aria-expanded', true);
-
-      $$$1(this._menu).toggleClass(ClassName.SHOW);
-      $$$1(parent).toggleClass(ClassName.SHOW).trigger($$$1.Event(Event.SHOWN, relatedTarget));
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      $$$1(this._element).off(EVENT_KEY);
-      this._element = null;
-      this._menu = null;
-
-      if (this._popper !== null) {
-        this._popper.destroy();
-
-        this._popper = null;
-      }
-    };
-
-    _proto.update = function update() {
-      this._inNavbar = this._detectNavbar();
-
-      if (this._popper !== null) {
-        this._popper.scheduleUpdate();
-      }
-    }; // Private
-
-
-    _proto._addEventListeners = function _addEventListeners() {
-      var _this = this;
-
-      $$$1(this._element).on(Event.CLICK, function (event) {
-        event.preventDefault();
-        event.stopPropagation();
-
-        _this.toggle();
-      });
-    };
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, this.constructor.Default, $$$1(this._element).data(), config);
-      Util.typeCheckConfig(NAME, config, this.constructor.DefaultType);
-      return config;
-    };
-
-    _proto._getMenuElement = function _getMenuElement() {
-      if (!this._menu) {
-        var parent = Dropdown._getParentFromElement(this._element);
-
-        this._menu = $$$1(parent).find(Selector.MENU)[0];
-      }
-
-      return this._menu;
-    };
-
-    _proto._getPlacement = function _getPlacement() {
-      var $parentDropdown = $$$1(this._element).parent();
-      var placement = AttachmentMap.BOTTOM; // Handle dropup
-
-      if ($parentDropdown.hasClass(ClassName.DROPUP)) {
-        placement = AttachmentMap.TOP;
-
-        if ($$$1(this._menu).hasClass(ClassName.MENURIGHT)) {
-          placement = AttachmentMap.TOPEND;
-        }
-      } else if ($parentDropdown.hasClass(ClassName.DROPRIGHT)) {
-        placement = AttachmentMap.RIGHT;
-      } else if ($parentDropdown.hasClass(ClassName.DROPLEFT)) {
-        placement = AttachmentMap.LEFT;
-      } else if ($$$1(this._menu).hasClass(ClassName.MENURIGHT)) {
-        placement = AttachmentMap.BOTTOMEND;
-      }
-
-      return placement;
-    };
-
-    _proto._detectNavbar = function _detectNavbar() {
-      return $$$1(this._element).closest('.navbar').length > 0;
-    };
-
-    _proto._getPopperConfig = function _getPopperConfig() {
-      var _this2 = this;
-
-      var offsetConf = {};
-
-      if (typeof this._config.offset === 'function') {
-        offsetConf.fn = function (data) {
-          data.offsets = _extends({}, data.offsets, _this2._config.offset(data.offsets) || {});
-          return data;
-        };
-      } else {
-        offsetConf.offset = this._config.offset;
-      }
-
-      var popperConfig = {
-        placement: this._getPlacement(),
-        modifiers: {
-          offset: offsetConf,
-          flip: {
-            enabled: this._config.flip
-          },
-          preventOverflow: {
-            boundariesElement: this._config.boundary
-          }
-        }
-      };
-      return popperConfig;
-    }; // Static
-
-
-    Dropdown._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = typeof config === 'object' ? config : null;
-
-        if (!data) {
-          data = new Dropdown(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    Dropdown._clearMenus = function _clearMenus(event) {
-      if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH || event.type === 'keyup' && event.which !== TAB_KEYCODE)) {
-        return;
-      }
-
-      var toggles = $$$1.makeArray($$$1(Selector.DATA_TOGGLE));
-
-      for (var i = 0; i < toggles.length; i++) {
-        var parent = Dropdown._getParentFromElement(toggles[i]);
-
-        var context = $$$1(toggles[i]).data(DATA_KEY);
-        var relatedTarget = {
-          relatedTarget: toggles[i]
-        };
-
-        if (!context) {
-          continue;
-        }
-
-        var dropdownMenu = context._menu;
-
-        if (!$$$1(parent).hasClass(ClassName.SHOW)) {
-          continue;
-        }
-
-        if (event && (event.type === 'click' && /input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) && $$$1.contains(parent, event.target)) {
-          continue;
-        }
-
-        var hideEvent = $$$1.Event(Event.HIDE, relatedTarget);
-        $$$1(parent).trigger(hideEvent);
-
-        if (hideEvent.isDefaultPrevented()) {
-          continue;
-        } // If this is a touch-enabled device we remove the extra
-        // empty mouseover listeners we added for iOS support
-
-
-        if ('ontouchstart' in document.documentElement) {
-          $$$1('body').children().off('mouseover', null, $$$1.noop);
-        }
-
-        toggles[i].setAttribute('aria-expanded', 'false');
-        $$$1(dropdownMenu).removeClass(ClassName.SHOW);
-        $$$1(parent).removeClass(ClassName.SHOW).trigger($$$1.Event(Event.HIDDEN, relatedTarget));
-      }
-    };
-
-    Dropdown._getParentFromElement = function _getParentFromElement(element) {
-      var parent;
-      var selector = Util.getSelectorFromElement(element);
-
-      if (selector) {
-        parent = $$$1(selector)[0];
-      }
-
-      return parent || element.parentNode;
-    }; // eslint-disable-next-line complexity
-
-
-    Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {
-      // If not input/textarea:
-      //  - And not a key in REGEXP_KEYDOWN => not a dropdown command
-      // If input/textarea:
-      //  - If space key => not a dropdown command
-      //  - If key is other than escape
-      //    - If key is not up or down => not a dropdown command
-      //    - If trigger inside the menu => not a dropdown command
-      if (/input|textarea/i.test(event.target.tagName) ? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE && (event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE || $$$1(event.target).closest(Selector.MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {
-        return;
-      }
-
-      event.preventDefault();
-      event.stopPropagation();
-
-      if (this.disabled || $$$1(this).hasClass(ClassName.DISABLED)) {
-        return;
-      }
-
-      var parent = Dropdown._getParentFromElement(this);
-
-      var isActive = $$$1(parent).hasClass(ClassName.SHOW);
-
-      if (!isActive && (event.which !== ESCAPE_KEYCODE || event.which !== SPACE_KEYCODE) || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
-        if (event.which === ESCAPE_KEYCODE) {
-          var toggle = $$$1(parent).find(Selector.DATA_TOGGLE)[0];
-          $$$1(toggle).trigger('focus');
-        }
-
-        $$$1(this).trigger('click');
-        return;
-      }
-
-      var items = $$$1(parent).find(Selector.VISIBLE_ITEMS).get();
-
-      if (items.length === 0) {
-        return;
-      }
-
-      var index = items.indexOf(event.target);
-
-      if (event.which === ARROW_UP_KEYCODE && index > 0) {
-        // Up
-        index--;
-      }
-
-      if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) {
-        // Down
-        index++;
-      }
-
-      if (index < 0) {
-        index = 0;
-      }
-
-      items[index].focus();
-    };
-
-    _createClass(Dropdown, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }, {
-      key: "DefaultType",
-      get: function get() {
-        return DefaultType;
-      }
-    }]);
-    return Dropdown;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE, Dropdown._dataApiKeydownHandler).on(Event.KEYDOWN_DATA_API, Selector.MENU, Dropdown._dataApiKeydownHandler).on(Event.CLICK_DATA_API + " " + Event.KEYUP_DATA_API, Dropdown._clearMenus).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    event.preventDefault();
-    event.stopPropagation();
-
-    Dropdown._jQueryInterface.call($$$1(this), 'toggle');
-  }).on(Event.CLICK_DATA_API, Selector.FORM_CHILD, function (e) {
-    e.stopPropagation();
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Dropdown._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Dropdown;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Dropdown._jQueryInterface;
-  };
-
-  return Dropdown;
-}($, Popper);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): modal.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Modal = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'modal';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.modal';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 300;
-  var BACKDROP_TRANSITION_DURATION = 150;
-  var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key
-
-  var Default = {
-    backdrop: true,
-    keyboard: true,
-    focus: true,
-    show: true
-  };
-  var DefaultType = {
-    backdrop: '(boolean|string)',
-    keyboard: 'boolean',
-    focus: 'boolean',
-    show: 'boolean'
-  };
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    FOCUSIN: "focusin" + EVENT_KEY,
-    RESIZE: "resize" + EVENT_KEY,
-    CLICK_DISMISS: "click.dismiss" + EVENT_KEY,
-    KEYDOWN_DISMISS: "keydown.dismiss" + EVENT_KEY,
-    MOUSEUP_DISMISS: "mouseup.dismiss" + EVENT_KEY,
-    MOUSEDOWN_DISMISS: "mousedown.dismiss" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    SCROLLBAR_MEASURER: 'modal-scrollbar-measure',
-    BACKDROP: 'modal-backdrop',
-    OPEN: 'modal-open',
-    FADE: 'fade',
-    SHOW: 'show'
-  };
-  var Selector = {
-    DIALOG: '.modal-dialog',
-    DATA_TOGGLE: '[data-toggle="modal"]',
-    DATA_DISMISS: '[data-dismiss="modal"]',
-    FIXED_CONTENT: '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top',
-    STICKY_CONTENT: '.sticky-top',
-    NAVBAR_TOGGLER: '.navbar-toggler'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Modal =
-  /*#__PURE__*/
-  function () {
-    function Modal(element, config) {
-      this._config = this._getConfig(config);
-      this._element = element;
-      this._dialog = $$$1(element).find(Selector.DIALOG)[0];
-      this._backdrop = null;
-      this._isShown = false;
-      this._isBodyOverflowing = false;
-      this._ignoreBackdropClick = false;
-      this._originalBodyPadding = 0;
-      this._scrollbarWidth = 0;
-    } // Getters
-
-
-    var _proto = Modal.prototype;
-
-    // Public
-    _proto.toggle = function toggle(relatedTarget) {
-      return this._isShown ? this.hide() : this.show(relatedTarget);
-    };
-
-    _proto.show = function show(relatedTarget) {
-      var _this = this;
-
-      if (this._isTransitioning || this._isShown) {
-        return;
-      }
-
-      if (Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE)) {
-        this._isTransitioning = true;
-      }
-
-      var showEvent = $$$1.Event(Event.SHOW, {
-        relatedTarget: relatedTarget
-      });
-      $$$1(this._element).trigger(showEvent);
-
-      if (this._isShown || showEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      this._isShown = true;
-
-      this._checkScrollbar();
-
-      this._setScrollbar();
-
-      this._adjustDialog();
-
-      $$$1(document.body).addClass(ClassName.OPEN);
-
-      this._setEscapeEvent();
-
-      this._setResizeEvent();
-
-      $$$1(this._element).on(Event.CLICK_DISMISS, Selector.DATA_DISMISS, function (event) {
-        return _this.hide(event);
-      });
-      $$$1(this._dialog).on(Event.MOUSEDOWN_DISMISS, function () {
-        $$$1(_this._element).one(Event.MOUSEUP_DISMISS, function (event) {
-          if ($$$1(event.target).is(_this._element)) {
-            _this._ignoreBackdropClick = true;
-          }
-        });
-      });
-
-      this._showBackdrop(function () {
-        return _this._showElement(relatedTarget);
-      });
-    };
-
-    _proto.hide = function hide(event) {
-      var _this2 = this;
-
-      if (event) {
-        event.preventDefault();
-      }
-
-      if (this._isTransitioning || !this._isShown) {
-        return;
-      }
-
-      var hideEvent = $$$1.Event(Event.HIDE);
-      $$$1(this._element).trigger(hideEvent);
-
-      if (!this._isShown || hideEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      this._isShown = false;
-      var transition = Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE);
-
-      if (transition) {
-        this._isTransitioning = true;
-      }
-
-      this._setEscapeEvent();
-
-      this._setResizeEvent();
-
-      $$$1(document).off(Event.FOCUSIN);
-      $$$1(this._element).removeClass(ClassName.SHOW);
-      $$$1(this._element).off(Event.CLICK_DISMISS);
-      $$$1(this._dialog).off(Event.MOUSEDOWN_DISMISS);
-
-      if (transition) {
-        $$$1(this._element).one(Util.TRANSITION_END, function (event) {
-          return _this2._hideModal(event);
-        }).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        this._hideModal();
-      }
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      $$$1(window, document, this._element, this._backdrop).off(EVENT_KEY);
-      this._config = null;
-      this._element = null;
-      this._dialog = null;
-      this._backdrop = null;
-      this._isShown = null;
-      this._isBodyOverflowing = null;
-      this._ignoreBackdropClick = null;
-      this._scrollbarWidth = null;
-    };
-
-    _proto.handleUpdate = function handleUpdate() {
-      this._adjustDialog();
-    }; // Private
-
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
-      Util.typeCheckConfig(NAME, config, DefaultType);
-      return config;
-    };
-
-    _proto._showElement = function _showElement(relatedTarget) {
-      var _this3 = this;
-
-      var transition = Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE);
-
-      if (!this._element.parentNode || this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
-        // Don't move modal's DOM position
-        document.body.appendChild(this._element);
-      }
-
-      this._element.style.display = 'block';
-
-      this._element.removeAttribute('aria-hidden');
-
-      this._element.scrollTop = 0;
-
-      if (transition) {
-        Util.reflow(this._element);
-      }
-
-      $$$1(this._element).addClass(ClassName.SHOW);
-
-      if (this._config.focus) {
-        this._enforceFocus();
-      }
-
-      var shownEvent = $$$1.Event(Event.SHOWN, {
-        relatedTarget: relatedTarget
-      });
-
-      var transitionComplete = function transitionComplete() {
-        if (_this3._config.focus) {
-          _this3._element.focus();
-        }
-
-        _this3._isTransitioning = false;
-        $$$1(_this3._element).trigger(shownEvent);
-      };
-
-      if (transition) {
-        $$$1(this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        transitionComplete();
-      }
-    };
-
-    _proto._enforceFocus = function _enforceFocus() {
-      var _this4 = this;
-
-      $$$1(document).off(Event.FOCUSIN) // Guard against infinite focus loop
-      .on(Event.FOCUSIN, function (event) {
-        if (document !== event.target && _this4._element !== event.target && $$$1(_this4._element).has(event.target).length === 0) {
-          _this4._element.focus();
-        }
-      });
-    };
-
-    _proto._setEscapeEvent = function _setEscapeEvent() {
-      var _this5 = this;
-
-      if (this._isShown && this._config.keyboard) {
-        $$$1(this._element).on(Event.KEYDOWN_DISMISS, function (event) {
-          if (event.which === ESCAPE_KEYCODE) {
-            event.preventDefault();
-
-            _this5.hide();
-          }
-        });
-      } else if (!this._isShown) {
-        $$$1(this._element).off(Event.KEYDOWN_DISMISS);
-      }
-    };
-
-    _proto._setResizeEvent = function _setResizeEvent() {
-      var _this6 = this;
-
-      if (this._isShown) {
-        $$$1(window).on(Event.RESIZE, function (event) {
-          return _this6.handleUpdate(event);
-        });
-      } else {
-        $$$1(window).off(Event.RESIZE);
-      }
-    };
-
-    _proto._hideModal = function _hideModal() {
-      var _this7 = this;
-
-      this._element.style.display = 'none';
-
-      this._element.setAttribute('aria-hidden', true);
-
-      this._isTransitioning = false;
-
-      this._showBackdrop(function () {
-        $$$1(document.body).removeClass(ClassName.OPEN);
-
-        _this7._resetAdjustments();
-
-        _this7._resetScrollbar();
-
-        $$$1(_this7._element).trigger(Event.HIDDEN);
-      });
-    };
-
-    _proto._removeBackdrop = function _removeBackdrop() {
-      if (this._backdrop) {
-        $$$1(this._backdrop).remove();
-        this._backdrop = null;
-      }
-    };
-
-    _proto._showBackdrop = function _showBackdrop(callback) {
-      var _this8 = this;
-
-      var animate = $$$1(this._element).hasClass(ClassName.FADE) ? ClassName.FADE : '';
-
-      if (this._isShown && this._config.backdrop) {
-        var doAnimate = Util.supportsTransitionEnd() && animate;
-        this._backdrop = document.createElement('div');
-        this._backdrop.className = ClassName.BACKDROP;
-
-        if (animate) {
-          $$$1(this._backdrop).addClass(animate);
-        }
-
-        $$$1(this._backdrop).appendTo(document.body);
-        $$$1(this._element).on(Event.CLICK_DISMISS, function (event) {
-          if (_this8._ignoreBackdropClick) {
-            _this8._ignoreBackdropClick = false;
-            return;
-          }
-
-          if (event.target !== event.currentTarget) {
-            return;
-          }
-
-          if (_this8._config.backdrop === 'static') {
-            _this8._element.focus();
-          } else {
-            _this8.hide();
-          }
-        });
-
-        if (doAnimate) {
-          Util.reflow(this._backdrop);
-        }
-
-        $$$1(this._backdrop).addClass(ClassName.SHOW);
-
-        if (!callback) {
-          return;
-        }
-
-        if (!doAnimate) {
-          callback();
-          return;
-        }
-
-        $$$1(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
-      } else if (!this._isShown && this._backdrop) {
-        $$$1(this._backdrop).removeClass(ClassName.SHOW);
-
-        var callbackRemove = function callbackRemove() {
-          _this8._removeBackdrop();
-
-          if (callback) {
-            callback();
-          }
-        };
-
-        if (Util.supportsTransitionEnd() && $$$1(this._element).hasClass(ClassName.FADE)) {
-          $$$1(this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
-        } else {
-          callbackRemove();
-        }
-      } else if (callback) {
-        callback();
-      }
-    }; // ----------------------------------------------------------------------
-    // the following methods are used to handle overflowing modals
-    // todo (fat): these should probably be refactored out of modal.js
-    // ----------------------------------------------------------------------
-
-
-    _proto._adjustDialog = function _adjustDialog() {
-      var isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;
-
-      if (!this._isBodyOverflowing && isModalOverflowing) {
-        this._element.style.paddingLeft = this._scrollbarWidth + "px";
-      }
-
-      if (this._isBodyOverflowing && !isModalOverflowing) {
-        this._element.style.paddingRight = this._scrollbarWidth + "px";
-      }
-    };
-
-    _proto._resetAdjustments = function _resetAdjustments() {
-      this._element.style.paddingLeft = '';
-      this._element.style.paddingRight = '';
-    };
-
-    _proto._checkScrollbar = function _checkScrollbar() {
-      var rect = document.body.getBoundingClientRect();
-      this._isBodyOverflowing = rect.left + rect.right < window.innerWidth;
-      this._scrollbarWidth = this._getScrollbarWidth();
-    };
-
-    _proto._setScrollbar = function _setScrollbar() {
-      var _this9 = this;
-
-      if (this._isBodyOverflowing) {
-        // Note: DOMNode.style.paddingRight returns the actual value or '' if not set
-        //   while $(DOMNode).css('padding-right') returns the calculated value or 0 if not set
-        // Adjust fixed content padding
-        $$$1(Selector.FIXED_CONTENT).each(function (index, element) {
-          var actualPadding = $$$1(element)[0].style.paddingRight;
-          var calculatedPadding = $$$1(element).css('padding-right');
-          $$$1(element).data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + _this9._scrollbarWidth + "px");
-        }); // Adjust sticky content margin
-
-        $$$1(Selector.STICKY_CONTENT).each(function (index, element) {
-          var actualMargin = $$$1(element)[0].style.marginRight;
-          var calculatedMargin = $$$1(element).css('margin-right');
-          $$$1(element).data('margin-right', actualMargin).css('margin-right', parseFloat(calculatedMargin) - _this9._scrollbarWidth + "px");
-        }); // Adjust navbar-toggler margin
-
-        $$$1(Selector.NAVBAR_TOGGLER).each(function (index, element) {
-          var actualMargin = $$$1(element)[0].style.marginRight;
-          var calculatedMargin = $$$1(element).css('margin-right');
-          $$$1(element).data('margin-right', actualMargin).css('margin-right', parseFloat(calculatedMargin) + _this9._scrollbarWidth + "px");
-        }); // Adjust body padding
-
-        var actualPadding = document.body.style.paddingRight;
-        var calculatedPadding = $$$1('body').css('padding-right');
-        $$$1('body').data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + this._scrollbarWidth + "px");
-      }
-    };
-
-    _proto._resetScrollbar = function _resetScrollbar() {
-      // Restore fixed content padding
-      $$$1(Selector.FIXED_CONTENT).each(function (index, element) {
-        var padding = $$$1(element).data('padding-right');
-
-        if (typeof padding !== 'undefined') {
-          $$$1(element).css('padding-right', padding).removeData('padding-right');
-        }
-      }); // Restore sticky content and navbar-toggler margin
-
-      $$$1(Selector.STICKY_CONTENT + ", " + Selector.NAVBAR_TOGGLER).each(function (index, element) {
-        var margin = $$$1(element).data('margin-right');
-
-        if (typeof margin !== 'undefined') {
-          $$$1(element).css('margin-right', margin).removeData('margin-right');
-        }
-      }); // Restore body padding
-
-      var padding = $$$1('body').data('padding-right');
-
-      if (typeof padding !== 'undefined') {
-        $$$1('body').css('padding-right', padding).removeData('padding-right');
-      }
-    };
-
-    _proto._getScrollbarWidth = function _getScrollbarWidth() {
-      // thx d.walsh
-      var scrollDiv = document.createElement('div');
-      scrollDiv.className = ClassName.SCROLLBAR_MEASURER;
-      document.body.appendChild(scrollDiv);
-      var scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth;
-      document.body.removeChild(scrollDiv);
-      return scrollbarWidth;
-    }; // Static
-
-
-    Modal._jQueryInterface = function _jQueryInterface(config, relatedTarget) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = _extends({}, Modal.Default, $$$1(this).data(), typeof config === 'object' && config);
-
-        if (!data) {
-          data = new Modal(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config](relatedTarget);
-        } else if (_config.show) {
-          data.show(relatedTarget);
-        }
-      });
-    };
-
-    _createClass(Modal, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }]);
-    return Modal;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    var _this10 = this;
-
-    var target;
-    var selector = Util.getSelectorFromElement(this);
-
-    if (selector) {
-      target = $$$1(selector)[0];
-    }
-
-    var config = $$$1(target).data(DATA_KEY) ? 'toggle' : _extends({}, $$$1(target).data(), $$$1(this).data());
-
-    if (this.tagName === 'A' || this.tagName === 'AREA') {
-      event.preventDefault();
-    }
-
-    var $target = $$$1(target).one(Event.SHOW, function (showEvent) {
-      if (showEvent.isDefaultPrevented()) {
-        // Only register focus restorer if modal will actually get shown
-        return;
-      }
-
-      $target.one(Event.HIDDEN, function () {
-        if ($$$1(_this10).is(':visible')) {
-          _this10.focus();
-        }
-      });
-    });
-
-    Modal._jQueryInterface.call($$$1(target), config, this);
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Modal._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Modal;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Modal._jQueryInterface;
-  };
-
-  return Modal;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): tooltip.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Tooltip = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'tooltip';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.tooltip';
-  var EVENT_KEY = "." + DATA_KEY;
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 150;
-  var CLASS_PREFIX = 'bs-tooltip';
-  var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
-  var DefaultType = {
-    animation: 'boolean',
-    template: 'string',
-    title: '(string|element|function)',
-    trigger: 'string',
-    delay: '(number|object)',
-    html: 'boolean',
-    selector: '(string|boolean)',
-    placement: '(string|function)',
-    offset: '(number|string)',
-    container: '(string|element|boolean)',
-    fallbackPlacement: '(string|array)',
-    boundary: '(string|element)'
-  };
-  var AttachmentMap = {
-    AUTO: 'auto',
-    TOP: 'top',
-    RIGHT: 'right',
-    BOTTOM: 'bottom',
-    LEFT: 'left'
-  };
-  var Default = {
-    animation: true,
-    template: '<div class="tooltip" role="tooltip">' + '<div class="arrow"></div>' + '<div class="tooltip-inner"></div></div>',
-    trigger: 'hover focus',
-    title: '',
-    delay: 0,
-    html: false,
-    selector: false,
-    placement: 'top',
-    offset: 0,
-    container: false,
-    fallbackPlacement: 'flip',
-    boundary: 'scrollParent'
-  };
-  var HoverState = {
-    SHOW: 'show',
-    OUT: 'out'
-  };
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    INSERTED: "inserted" + EVENT_KEY,
-    CLICK: "click" + EVENT_KEY,
-    FOCUSIN: "focusin" + EVENT_KEY,
-    FOCUSOUT: "focusout" + EVENT_KEY,
-    MOUSEENTER: "mouseenter" + EVENT_KEY,
-    MOUSELEAVE: "mouseleave" + EVENT_KEY
-  };
-  var ClassName = {
-    FADE: 'fade',
-    SHOW: 'show'
-  };
-  var Selector = {
-    TOOLTIP: '.tooltip',
-    TOOLTIP_INNER: '.tooltip-inner',
-    ARROW: '.arrow'
-  };
-  var Trigger = {
-    HOVER: 'hover',
-    FOCUS: 'focus',
-    CLICK: 'click',
-    MANUAL: 'manual'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Tooltip =
-  /*#__PURE__*/
-  function () {
-    function Tooltip(element, config) {
-      /**
-       * Check for Popper dependency
-       * Popper - https://popper.js.org
-       */
-      if (typeof Popper === 'undefined') {
-        throw new TypeError('Bootstrap tooltips require Popper.js (https://popper.js.org)');
-      } // private
-
-
-      this._isEnabled = true;
-      this._timeout = 0;
-      this._hoverState = '';
-      this._activeTrigger = {};
-      this._popper = null; // Protected
-
-      this.element = element;
-      this.config = this._getConfig(config);
-      this.tip = null;
-
-      this._setListeners();
-    } // Getters
-
-
-    var _proto = Tooltip.prototype;
-
-    // Public
-    _proto.enable = function enable() {
-      this._isEnabled = true;
-    };
-
-    _proto.disable = function disable() {
-      this._isEnabled = false;
-    };
-
-    _proto.toggleEnabled = function toggleEnabled() {
-      this._isEnabled = !this._isEnabled;
-    };
-
-    _proto.toggle = function toggle(event) {
-      if (!this._isEnabled) {
-        return;
-      }
-
-      if (event) {
-        var dataKey = this.constructor.DATA_KEY;
-        var context = $$$1(event.currentTarget).data(dataKey);
-
-        if (!context) {
-          context = new this.constructor(event.currentTarget, this._getDelegateConfig());
-          $$$1(event.currentTarget).data(dataKey, context);
-        }
-
-        context._activeTrigger.click = !context._activeTrigger.click;
-
-        if (context._isWithActiveTrigger()) {
-          context._enter(null, context);
-        } else {
-          context._leave(null, context);
-        }
-      } else {
-        if ($$$1(this.getTipElement()).hasClass(ClassName.SHOW)) {
-          this._leave(null, this);
-
-          return;
-        }
-
-        this._enter(null, this);
-      }
-    };
-
-    _proto.dispose = function dispose() {
-      clearTimeout(this._timeout);
-      $$$1.removeData(this.element, this.constructor.DATA_KEY);
-      $$$1(this.element).off(this.constructor.EVENT_KEY);
-      $$$1(this.element).closest('.modal').off('hide.bs.modal');
-
-      if (this.tip) {
-        $$$1(this.tip).remove();
-      }
-
-      this._isEnabled = null;
-      this._timeout = null;
-      this._hoverState = null;
-      this._activeTrigger = null;
-
-      if (this._popper !== null) {
-        this._popper.destroy();
-      }
-
-      this._popper = null;
-      this.element = null;
-      this.config = null;
-      this.tip = null;
-    };
-
-    _proto.show = function show() {
-      var _this = this;
-
-      if ($$$1(this.element).css('display') === 'none') {
-        throw new Error('Please use show on visible elements');
-      }
-
-      var showEvent = $$$1.Event(this.constructor.Event.SHOW);
-
-      if (this.isWithContent() && this._isEnabled) {
-        $$$1(this.element).trigger(showEvent);
-        var isInTheDom = $$$1.contains(this.element.ownerDocument.documentElement, this.element);
-
-        if (showEvent.isDefaultPrevented() || !isInTheDom) {
-          return;
-        }
-
-        var tip = this.getTipElement();
-        var tipId = Util.getUID(this.constructor.NAME);
-        tip.setAttribute('id', tipId);
-        this.element.setAttribute('aria-describedby', tipId);
-        this.setContent();
-
-        if (this.config.animation) {
-          $$$1(tip).addClass(ClassName.FADE);
-        }
-
-        var placement = typeof this.config.placement === 'function' ? this.config.placement.call(this, tip, this.element) : this.config.placement;
-
-        var attachment = this._getAttachment(placement);
-
-        this.addAttachmentClass(attachment);
-        var container = this.config.container === false ? document.body : $$$1(this.config.container);
-        $$$1(tip).data(this.constructor.DATA_KEY, this);
-
-        if (!$$$1.contains(this.element.ownerDocument.documentElement, this.tip)) {
-          $$$1(tip).appendTo(container);
-        }
-
-        $$$1(this.element).trigger(this.constructor.Event.INSERTED);
-        this._popper = new Popper(this.element, tip, {
-          placement: attachment,
-          modifiers: {
-            offset: {
-              offset: this.config.offset
-            },
-            flip: {
-              behavior: this.config.fallbackPlacement
-            },
-            arrow: {
-              element: Selector.ARROW
-            },
-            preventOverflow: {
-              boundariesElement: this.config.boundary
-            }
-          },
-          onCreate: function onCreate(data) {
-            if (data.originalPlacement !== data.placement) {
-              _this._handlePopperPlacementChange(data);
-            }
-          },
-          onUpdate: function onUpdate(data) {
-            _this._handlePopperPlacementChange(data);
-          }
-        });
-        $$$1(tip).addClass(ClassName.SHOW); // If this is a touch-enabled device we add extra
-        // empty mouseover listeners to the body's immediate children;
-        // only needed because of broken event delegation on iOS
-        // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html
-
-        if ('ontouchstart' in document.documentElement) {
-          $$$1('body').children().on('mouseover', null, $$$1.noop);
-        }
-
-        var complete = function complete() {
-          if (_this.config.animation) {
-            _this._fixTransition();
-          }
-
-          var prevHoverState = _this._hoverState;
-          _this._hoverState = null;
-          $$$1(_this.element).trigger(_this.constructor.Event.SHOWN);
-
-          if (prevHoverState === HoverState.OUT) {
-            _this._leave(null, _this);
-          }
-        };
-
-        if (Util.supportsTransitionEnd() && $$$1(this.tip).hasClass(ClassName.FADE)) {
-          $$$1(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(Tooltip._TRANSITION_DURATION);
-        } else {
-          complete();
-        }
-      }
-    };
-
-    _proto.hide = function hide(callback) {
-      var _this2 = this;
-
-      var tip = this.getTipElement();
-      var hideEvent = $$$1.Event(this.constructor.Event.HIDE);
-
-      var complete = function complete() {
-        if (_this2._hoverState !== HoverState.SHOW && tip.parentNode) {
-          tip.parentNode.removeChild(tip);
-        }
-
-        _this2._cleanTipClass();
-
-        _this2.element.removeAttribute('aria-describedby');
-
-        $$$1(_this2.element).trigger(_this2.constructor.Event.HIDDEN);
-
-        if (_this2._popper !== null) {
-          _this2._popper.destroy();
-        }
-
-        if (callback) {
-          callback();
-        }
-      };
-
-      $$$1(this.element).trigger(hideEvent);
-
-      if (hideEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      $$$1(tip).removeClass(ClassName.SHOW); // If this is a touch-enabled device we remove the extra
-      // empty mouseover listeners we added for iOS support
-
-      if ('ontouchstart' in document.documentElement) {
-        $$$1('body').children().off('mouseover', null, $$$1.noop);
-      }
-
-      this._activeTrigger[Trigger.CLICK] = false;
-      this._activeTrigger[Trigger.FOCUS] = false;
-      this._activeTrigger[Trigger.HOVER] = false;
-
-      if (Util.supportsTransitionEnd() && $$$1(this.tip).hasClass(ClassName.FADE)) {
-        $$$1(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        complete();
-      }
-
-      this._hoverState = '';
-    };
-
-    _proto.update = function update() {
-      if (this._popper !== null) {
-        this._popper.scheduleUpdate();
-      }
-    }; // Protected
-
-
-    _proto.isWithContent = function isWithContent() {
-      return Boolean(this.getTitle());
-    };
-
-    _proto.addAttachmentClass = function addAttachmentClass(attachment) {
-      $$$1(this.getTipElement()).addClass(CLASS_PREFIX + "-" + attachment);
-    };
-
-    _proto.getTipElement = function getTipElement() {
-      this.tip = this.tip || $$$1(this.config.template)[0];
-      return this.tip;
-    };
-
-    _proto.setContent = function setContent() {
-      var $tip = $$$1(this.getTipElement());
-      this.setElementContent($tip.find(Selector.TOOLTIP_INNER), this.getTitle());
-      $tip.removeClass(ClassName.FADE + " " + ClassName.SHOW);
-    };
-
-    _proto.setElementContent = function setElementContent($element, content) {
-      var html = this.config.html;
-
-      if (typeof content === 'object' && (content.nodeType || content.jquery)) {
-        // Content is a DOM node or a jQuery
-        if (html) {
-          if (!$$$1(content).parent().is($element)) {
-            $element.empty().append(content);
-          }
-        } else {
-          $element.text($$$1(content).text());
-        }
-      } else {
-        $element[html ? 'html' : 'text'](content);
-      }
-    };
-
-    _proto.getTitle = function getTitle() {
-      var title = this.element.getAttribute('data-original-title');
-
-      if (!title) {
-        title = typeof this.config.title === 'function' ? this.config.title.call(this.element) : this.config.title;
-      }
-
-      return title;
-    }; // Private
-
-
-    _proto._getAttachment = function _getAttachment(placement) {
-      return AttachmentMap[placement.toUpperCase()];
-    };
-
-    _proto._setListeners = function _setListeners() {
-      var _this3 = this;
-
-      var triggers = this.config.trigger.split(' ');
-      triggers.forEach(function (trigger) {
-        if (trigger === 'click') {
-          $$$1(_this3.element).on(_this3.constructor.Event.CLICK, _this3.config.selector, function (event) {
-            return _this3.toggle(event);
-          });
-        } else if (trigger !== Trigger.MANUAL) {
-          var eventIn = trigger === Trigger.HOVER ? _this3.constructor.Event.MOUSEENTER : _this3.constructor.Event.FOCUSIN;
-          var eventOut = trigger === Trigger.HOVER ? _this3.constructor.Event.MOUSELEAVE : _this3.constructor.Event.FOCUSOUT;
-          $$$1(_this3.element).on(eventIn, _this3.config.selector, function (event) {
-            return _this3._enter(event);
-          }).on(eventOut, _this3.config.selector, function (event) {
-            return _this3._leave(event);
-          });
-        }
-
-        $$$1(_this3.element).closest('.modal').on('hide.bs.modal', function () {
-          return _this3.hide();
-        });
-      });
-
-      if (this.config.selector) {
-        this.config = _extends({}, this.config, {
-          trigger: 'manual',
-          selector: ''
-        });
-      } else {
-        this._fixTitle();
-      }
-    };
-
-    _proto._fixTitle = function _fixTitle() {
-      var titleType = typeof this.element.getAttribute('data-original-title');
-
-      if (this.element.getAttribute('title') || titleType !== 'string') {
-        this.element.setAttribute('data-original-title', this.element.getAttribute('title') || '');
-        this.element.setAttribute('title', '');
-      }
-    };
-
-    _proto._enter = function _enter(event, context) {
-      var dataKey = this.constructor.DATA_KEY;
-      context = context || $$$1(event.currentTarget).data(dataKey);
-
-      if (!context) {
-        context = new this.constructor(event.currentTarget, this._getDelegateConfig());
-        $$$1(event.currentTarget).data(dataKey, context);
-      }
-
-      if (event) {
-        context._activeTrigger[event.type === 'focusin' ? Trigger.FOCUS : Trigger.HOVER] = true;
-      }
-
-      if ($$$1(context.getTipElement()).hasClass(ClassName.SHOW) || context._hoverState === HoverState.SHOW) {
-        context._hoverState = HoverState.SHOW;
-        return;
-      }
-
-      clearTimeout(context._timeout);
-      context._hoverState = HoverState.SHOW;
-
-      if (!context.config.delay || !context.config.delay.show) {
-        context.show();
-        return;
-      }
-
-      context._timeout = setTimeout(function () {
-        if (context._hoverState === HoverState.SHOW) {
-          context.show();
-        }
-      }, context.config.delay.show);
-    };
-
-    _proto._leave = function _leave(event, context) {
-      var dataKey = this.constructor.DATA_KEY;
-      context = context || $$$1(event.currentTarget).data(dataKey);
-
-      if (!context) {
-        context = new this.constructor(event.currentTarget, this._getDelegateConfig());
-        $$$1(event.currentTarget).data(dataKey, context);
-      }
-
-      if (event) {
-        context._activeTrigger[event.type === 'focusout' ? Trigger.FOCUS : Trigger.HOVER] = false;
-      }
-
-      if (context._isWithActiveTrigger()) {
-        return;
-      }
-
-      clearTimeout(context._timeout);
-      context._hoverState = HoverState.OUT;
-
-      if (!context.config.delay || !context.config.delay.hide) {
-        context.hide();
-        return;
-      }
-
-      context._timeout = setTimeout(function () {
-        if (context._hoverState === HoverState.OUT) {
-          context.hide();
-        }
-      }, context.config.delay.hide);
-    };
-
-    _proto._isWithActiveTrigger = function _isWithActiveTrigger() {
-      for (var trigger in this._activeTrigger) {
-        if (this._activeTrigger[trigger]) {
-          return true;
-        }
-      }
-
-      return false;
-    };
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, this.constructor.Default, $$$1(this.element).data(), config);
-
-      if (typeof config.delay === 'number') {
-        config.delay = {
-          show: config.delay,
-          hide: config.delay
-        };
-      }
-
-      if (typeof config.title === 'number') {
-        config.title = config.title.toString();
-      }
-
-      if (typeof config.content === 'number') {
-        config.content = config.content.toString();
-      }
-
-      Util.typeCheckConfig(NAME, config, this.constructor.DefaultType);
-      return config;
-    };
-
-    _proto._getDelegateConfig = function _getDelegateConfig() {
-      var config = {};
-
-      if (this.config) {
-        for (var key in this.config) {
-          if (this.constructor.Default[key] !== this.config[key]) {
-            config[key] = this.config[key];
-          }
-        }
-      }
-
-      return config;
-    };
-
-    _proto._cleanTipClass = function _cleanTipClass() {
-      var $tip = $$$1(this.getTipElement());
-      var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX);
-
-      if (tabClass !== null && tabClass.length > 0) {
-        $tip.removeClass(tabClass.join(''));
-      }
-    };
-
-    _proto._handlePopperPlacementChange = function _handlePopperPlacementChange(data) {
-      this._cleanTipClass();
-
-      this.addAttachmentClass(this._getAttachment(data.placement));
-    };
-
-    _proto._fixTransition = function _fixTransition() {
-      var tip = this.getTipElement();
-      var initConfigAnimation = this.config.animation;
-
-      if (tip.getAttribute('x-placement') !== null) {
-        return;
-      }
-
-      $$$1(tip).removeClass(ClassName.FADE);
-      this.config.animation = false;
-      this.hide();
-      this.show();
-      this.config.animation = initConfigAnimation;
-    }; // Static
-
-
-    Tooltip._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = typeof config === 'object' && config;
-
-        if (!data && /dispose|hide/.test(config)) {
-          return;
-        }
-
-        if (!data) {
-          data = new Tooltip(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Tooltip, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }, {
-      key: "NAME",
-      get: function get() {
-        return NAME;
-      }
-    }, {
-      key: "DATA_KEY",
-      get: function get() {
-        return DATA_KEY;
-      }
-    }, {
-      key: "Event",
-      get: function get() {
-        return Event;
-      }
-    }, {
-      key: "EVENT_KEY",
-      get: function get() {
-        return EVENT_KEY;
-      }
-    }, {
-      key: "DefaultType",
-      get: function get() {
-        return DefaultType;
-      }
-    }]);
-    return Tooltip;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1.fn[NAME] = Tooltip._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Tooltip;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Tooltip._jQueryInterface;
-  };
-
-  return Tooltip;
-}($, Popper);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): popover.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Popover = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'popover';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.popover';
-  var EVENT_KEY = "." + DATA_KEY;
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var CLASS_PREFIX = 'bs-popover';
-  var BSCLS_PREFIX_REGEX = new RegExp("(^|\\s)" + CLASS_PREFIX + "\\S+", 'g');
-  var Default = _extends({}, Tooltip.Default, {
-    placement: 'right',
-    trigger: 'click',
-    content: '',
-    template: '<div class="popover" role="tooltip">' + '<div class="arrow"></div>' + '<h3 class="popover-header"></h3>' + '<div class="popover-body"></div></div>'
-  });
-  var DefaultType = _extends({}, Tooltip.DefaultType, {
-    content: '(string|element|function)'
-  });
-  var ClassName = {
-    FADE: 'fade',
-    SHOW: 'show'
-  };
-  var Selector = {
-    TITLE: '.popover-header',
-    CONTENT: '.popover-body'
-  };
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    INSERTED: "inserted" + EVENT_KEY,
-    CLICK: "click" + EVENT_KEY,
-    FOCUSIN: "focusin" + EVENT_KEY,
-    FOCUSOUT: "focusout" + EVENT_KEY,
-    MOUSEENTER: "mouseenter" + EVENT_KEY,
-    MOUSELEAVE: "mouseleave" + EVENT_KEY
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Popover =
-  /*#__PURE__*/
-  function (_Tooltip) {
-    _inheritsLoose(Popover, _Tooltip);
-
-    function Popover() {
-      return _Tooltip.apply(this, arguments) || this;
-    }
-
-    var _proto = Popover.prototype;
-
-    // Overrides
-    _proto.isWithContent = function isWithContent() {
-      return this.getTitle() || this._getContent();
-    };
-
-    _proto.addAttachmentClass = function addAttachmentClass(attachment) {
-      $$$1(this.getTipElement()).addClass(CLASS_PREFIX + "-" + attachment);
-    };
-
-    _proto.getTipElement = function getTipElement() {
-      this.tip = this.tip || $$$1(this.config.template)[0];
-      return this.tip;
-    };
-
-    _proto.setContent = function setContent() {
-      var $tip = $$$1(this.getTipElement()); // We use append for html objects to maintain js events
-
-      this.setElementContent($tip.find(Selector.TITLE), this.getTitle());
-
-      var content = this._getContent();
-
-      if (typeof content === 'function') {
-        content = content.call(this.element);
-      }
-
-      this.setElementContent($tip.find(Selector.CONTENT), content);
-      $tip.removeClass(ClassName.FADE + " " + ClassName.SHOW);
-    }; // Private
-
-
-    _proto._getContent = function _getContent() {
-      return this.element.getAttribute('data-content') || this.config.content;
-    };
-
-    _proto._cleanTipClass = function _cleanTipClass() {
-      var $tip = $$$1(this.getTipElement());
-      var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX);
-
-      if (tabClass !== null && tabClass.length > 0) {
-        $tip.removeClass(tabClass.join(''));
-      }
-    }; // Static
-
-
-    Popover._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = typeof config === 'object' ? config : null;
-
-        if (!data && /destroy|hide/.test(config)) {
-          return;
-        }
-
-        if (!data) {
-          data = new Popover(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Popover, null, [{
-      key: "VERSION",
-      // Getters
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }, {
-      key: "NAME",
-      get: function get() {
-        return NAME;
-      }
-    }, {
-      key: "DATA_KEY",
-      get: function get() {
-        return DATA_KEY;
-      }
-    }, {
-      key: "Event",
-      get: function get() {
-        return Event;
-      }
-    }, {
-      key: "EVENT_KEY",
-      get: function get() {
-        return EVENT_KEY;
-      }
-    }, {
-      key: "DefaultType",
-      get: function get() {
-        return DefaultType;
-      }
-    }]);
-    return Popover;
-  }(Tooltip);
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1.fn[NAME] = Popover._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Popover;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Popover._jQueryInterface;
-  };
-
-  return Popover;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): scrollspy.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var ScrollSpy = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'scrollspy';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.scrollspy';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var Default = {
-    offset: 10,
-    method: 'auto',
-    target: ''
-  };
-  var DefaultType = {
-    offset: 'number',
-    method: 'string',
-    target: '(string|element)'
-  };
-  var Event = {
-    ACTIVATE: "activate" + EVENT_KEY,
-    SCROLL: "scroll" + EVENT_KEY,
-    LOAD_DATA_API: "load" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    DROPDOWN_ITEM: 'dropdown-item',
-    DROPDOWN_MENU: 'dropdown-menu',
-    ACTIVE: 'active'
-  };
-  var Selector = {
-    DATA_SPY: '[data-spy="scroll"]',
-    ACTIVE: '.active',
-    NAV_LIST_GROUP: '.nav, .list-group',
-    NAV_LINKS: '.nav-link',
-    NAV_ITEMS: '.nav-item',
-    LIST_ITEMS: '.list-group-item',
-    DROPDOWN: '.dropdown',
-    DROPDOWN_ITEMS: '.dropdown-item',
-    DROPDOWN_TOGGLE: '.dropdown-toggle'
-  };
-  var OffsetMethod = {
-    OFFSET: 'offset',
-    POSITION: 'position'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var ScrollSpy =
-  /*#__PURE__*/
-  function () {
-    function ScrollSpy(element, config) {
-      var _this = this;
-
-      this._element = element;
-      this._scrollElement = element.tagName === 'BODY' ? window : element;
-      this._config = this._getConfig(config);
-      this._selector = this._config.target + " " + Selector.NAV_LINKS + "," + (this._config.target + " " + Selector.LIST_ITEMS + ",") + (this._config.target + " " + Selector.DROPDOWN_ITEMS);
-      this._offsets = [];
-      this._targets = [];
-      this._activeTarget = null;
-      this._scrollHeight = 0;
-      $$$1(this._scrollElement).on(Event.SCROLL, function (event) {
-        return _this._process(event);
-      });
-      this.refresh();
-
-      this._process();
-    } // Getters
-
-
-    var _proto = ScrollSpy.prototype;
-
-    // Public
-    _proto.refresh = function refresh() {
-      var _this2 = this;
-
-      var autoMethod = this._scrollElement === this._scrollElement.window ? OffsetMethod.OFFSET : OffsetMethod.POSITION;
-      var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;
-      var offsetBase = offsetMethod === OffsetMethod.POSITION ? this._getScrollTop() : 0;
-      this._offsets = [];
-      this._targets = [];
-      this._scrollHeight = this._getScrollHeight();
-      var targets = $$$1.makeArray($$$1(this._selector));
-      targets.map(function (element) {
-        var target;
-        var targetSelector = Util.getSelectorFromElement(element);
-
-        if (targetSelector) {
-          target = $$$1(targetSelector)[0];
-        }
-
-        if (target) {
-          var targetBCR = target.getBoundingClientRect();
-
-          if (targetBCR.width || targetBCR.height) {
-            // TODO (fat): remove sketch reliance on jQuery position/offset
-            return [$$$1(target)[offsetMethod]().top + offsetBase, targetSelector];
-          }
-        }
-
-        return null;
-      }).filter(function (item) {
-        return item;
-      }).sort(function (a, b) {
-        return a[0] - b[0];
-      }).forEach(function (item) {
-        _this2._offsets.push(item[0]);
-
-        _this2._targets.push(item[1]);
-      });
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      $$$1(this._scrollElement).off(EVENT_KEY);
-      this._element = null;
-      this._scrollElement = null;
-      this._config = null;
-      this._selector = null;
-      this._offsets = null;
-      this._targets = null;
-      this._activeTarget = null;
-      this._scrollHeight = null;
-    }; // Private
-
-
-    _proto._getConfig = function _getConfig(config) {
-      config = _extends({}, Default, config);
-
-      if (typeof config.target !== 'string') {
-        var id = $$$1(config.target).attr('id');
-
-        if (!id) {
-          id = Util.getUID(NAME);
-          $$$1(config.target).attr('id', id);
-        }
-
-        config.target = "#" + id;
-      }
-
-      Util.typeCheckConfig(NAME, config, DefaultType);
-      return config;
-    };
-
-    _proto._getScrollTop = function _getScrollTop() {
-      return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;
-    };
-
-    _proto._getScrollHeight = function _getScrollHeight() {
-      return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
-    };
-
-    _proto._getOffsetHeight = function _getOffsetHeight() {
-      return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
-    };
-
-    _proto._process = function _process() {
-      var scrollTop = this._getScrollTop() + this._config.offset;
-
-      var scrollHeight = this._getScrollHeight();
-
-      var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
-
-      if (this._scrollHeight !== scrollHeight) {
-        this.refresh();
-      }
-
-      if (scrollTop >= maxScroll) {
-        var target = this._targets[this._targets.length - 1];
-
-        if (this._activeTarget !== target) {
-          this._activate(target);
-        }
-
-        return;
-      }
-
-      if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
-        this._activeTarget = null;
-
-        this._clear();
-
-        return;
-      }
-
-      for (var i = this._offsets.length; i--;) {
-        var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);
-
-        if (isActiveTarget) {
-          this._activate(this._targets[i]);
-        }
-      }
-    };
-
-    _proto._activate = function _activate(target) {
-      this._activeTarget = target;
-
-      this._clear();
-
-      var queries = this._selector.split(','); // eslint-disable-next-line arrow-body-style
-
-
-      queries = queries.map(function (selector) {
-        return selector + "[data-target=\"" + target + "\"]," + (selector + "[href=\"" + target + "\"]");
-      });
-      var $link = $$$1(queries.join(','));
-
-      if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {
-        $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE);
-        $link.addClass(ClassName.ACTIVE);
-      } else {
-        // Set triggered link as active
-        $link.addClass(ClassName.ACTIVE); // Set triggered links parents as active
-        // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
-
-        $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_LINKS + ", " + Selector.LIST_ITEMS).addClass(ClassName.ACTIVE); // Handle special case when .nav-link is inside .nav-item
-
-        $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_ITEMS).children(Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
-      }
-
-      $$$1(this._scrollElement).trigger(Event.ACTIVATE, {
-        relatedTarget: target
-      });
-    };
-
-    _proto._clear = function _clear() {
-      $$$1(this._selector).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE);
-    }; // Static
-
-
-    ScrollSpy._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var data = $$$1(this).data(DATA_KEY);
-
-        var _config = typeof config === 'object' && config;
-
-        if (!data) {
-          data = new ScrollSpy(this, _config);
-          $$$1(this).data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(ScrollSpy, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }, {
-      key: "Default",
-      get: function get() {
-        return Default;
-      }
-    }]);
-    return ScrollSpy;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(window).on(Event.LOAD_DATA_API, function () {
-    var scrollSpys = $$$1.makeArray($$$1(Selector.DATA_SPY));
-
-    for (var i = scrollSpys.length; i--;) {
-      var $spy = $$$1(scrollSpys[i]);
-
-      ScrollSpy._jQueryInterface.call($spy, $spy.data());
-    }
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = ScrollSpy._jQueryInterface;
-  $$$1.fn[NAME].Constructor = ScrollSpy;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return ScrollSpy._jQueryInterface;
-  };
-
-  return ScrollSpy;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0): tab.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-var Tab = function ($$$1) {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-  var NAME = 'tab';
-  var VERSION = '4.0.0';
-  var DATA_KEY = 'bs.tab';
-  var EVENT_KEY = "." + DATA_KEY;
-  var DATA_API_KEY = '.data-api';
-  var JQUERY_NO_CONFLICT = $$$1.fn[NAME];
-  var TRANSITION_DURATION = 150;
-  var Event = {
-    HIDE: "hide" + EVENT_KEY,
-    HIDDEN: "hidden" + EVENT_KEY,
-    SHOW: "show" + EVENT_KEY,
-    SHOWN: "shown" + EVENT_KEY,
-    CLICK_DATA_API: "click" + EVENT_KEY + DATA_API_KEY
-  };
-  var ClassName = {
-    DROPDOWN_MENU: 'dropdown-menu',
-    ACTIVE: 'active',
-    DISABLED: 'disabled',
-    FADE: 'fade',
-    SHOW: 'show'
-  };
-  var Selector = {
-    DROPDOWN: '.dropdown',
-    NAV_LIST_GROUP: '.nav, .list-group',
-    ACTIVE: '.active',
-    ACTIVE_UL: '> li > .active',
-    DATA_TOGGLE: '[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]',
-    DROPDOWN_TOGGLE: '.dropdown-toggle',
-    DROPDOWN_ACTIVE_CHILD: '> .dropdown-menu .active'
-    /**
-     * ------------------------------------------------------------------------
-     * Class Definition
-     * ------------------------------------------------------------------------
-     */
-
-  };
-
-  var Tab =
-  /*#__PURE__*/
-  function () {
-    function Tab(element) {
-      this._element = element;
-    } // Getters
-
-
-    var _proto = Tab.prototype;
-
-    // Public
-    _proto.show = function show() {
-      var _this = this;
-
-      if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && $$$1(this._element).hasClass(ClassName.ACTIVE) || $$$1(this._element).hasClass(ClassName.DISABLED)) {
-        return;
-      }
-
-      var target;
-      var previous;
-      var listElement = $$$1(this._element).closest(Selector.NAV_LIST_GROUP)[0];
-      var selector = Util.getSelectorFromElement(this._element);
-
-      if (listElement) {
-        var itemSelector = listElement.nodeName === 'UL' ? Selector.ACTIVE_UL : Selector.ACTIVE;
-        previous = $$$1.makeArray($$$1(listElement).find(itemSelector));
-        previous = previous[previous.length - 1];
-      }
-
-      var hideEvent = $$$1.Event(Event.HIDE, {
-        relatedTarget: this._element
-      });
-      var showEvent = $$$1.Event(Event.SHOW, {
-        relatedTarget: previous
-      });
-
-      if (previous) {
-        $$$1(previous).trigger(hideEvent);
-      }
-
-      $$$1(this._element).trigger(showEvent);
-
-      if (showEvent.isDefaultPrevented() || hideEvent.isDefaultPrevented()) {
-        return;
-      }
-
-      if (selector) {
-        target = $$$1(selector)[0];
-      }
-
-      this._activate(this._element, listElement);
-
-      var complete = function complete() {
-        var hiddenEvent = $$$1.Event(Event.HIDDEN, {
-          relatedTarget: _this._element
-        });
-        var shownEvent = $$$1.Event(Event.SHOWN, {
-          relatedTarget: previous
-        });
-        $$$1(previous).trigger(hiddenEvent);
-        $$$1(_this._element).trigger(shownEvent);
-      };
-
-      if (target) {
-        this._activate(target, target.parentNode, complete);
-      } else {
-        complete();
-      }
-    };
-
-    _proto.dispose = function dispose() {
-      $$$1.removeData(this._element, DATA_KEY);
-      this._element = null;
-    }; // Private
-
-
-    _proto._activate = function _activate(element, container, callback) {
-      var _this2 = this;
-
-      var activeElements;
-
-      if (container.nodeName === 'UL') {
-        activeElements = $$$1(container).find(Selector.ACTIVE_UL);
-      } else {
-        activeElements = $$$1(container).children(Selector.ACTIVE);
-      }
-
-      var active = activeElements[0];
-      var isTransitioning = callback && Util.supportsTransitionEnd() && active && $$$1(active).hasClass(ClassName.FADE);
-
-      var complete = function complete() {
-        return _this2._transitionComplete(element, active, callback);
-      };
-
-      if (active && isTransitioning) {
-        $$$1(active).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
-      } else {
-        complete();
-      }
-    };
-
-    _proto._transitionComplete = function _transitionComplete(element, active, callback) {
-      if (active) {
-        $$$1(active).removeClass(ClassName.SHOW + " " + ClassName.ACTIVE);
-        var dropdownChild = $$$1(active.parentNode).find(Selector.DROPDOWN_ACTIVE_CHILD)[0];
-
-        if (dropdownChild) {
-          $$$1(dropdownChild).removeClass(ClassName.ACTIVE);
-        }
-
-        if (active.getAttribute('role') === 'tab') {
-          active.setAttribute('aria-selected', false);
-        }
-      }
-
-      $$$1(element).addClass(ClassName.ACTIVE);
-
-      if (element.getAttribute('role') === 'tab') {
-        element.setAttribute('aria-selected', true);
-      }
-
-      Util.reflow(element);
-      $$$1(element).addClass(ClassName.SHOW);
-
-      if (element.parentNode && $$$1(element.parentNode).hasClass(ClassName.DROPDOWN_MENU)) {
-        var dropdownElement = $$$1(element).closest(Selector.DROPDOWN)[0];
-
-        if (dropdownElement) {
-          $$$1(dropdownElement).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE);
-        }
-
-        element.setAttribute('aria-expanded', true);
-      }
-
-      if (callback) {
-        callback();
-      }
-    }; // Static
-
-
-    Tab._jQueryInterface = function _jQueryInterface(config) {
-      return this.each(function () {
-        var $this = $$$1(this);
-        var data = $this.data(DATA_KEY);
-
-        if (!data) {
-          data = new Tab(this);
-          $this.data(DATA_KEY, data);
-        }
-
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError("No method named \"" + config + "\"");
-          }
-
-          data[config]();
-        }
-      });
-    };
-
-    _createClass(Tab, null, [{
-      key: "VERSION",
-      get: function get() {
-        return VERSION;
-      }
-    }]);
-    return Tab;
-  }();
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
-
-
-  $$$1(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    event.preventDefault();
-
-    Tab._jQueryInterface.call($$$1(this), 'show');
-  });
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $$$1.fn[NAME] = Tab._jQueryInterface;
-  $$$1.fn[NAME].Constructor = Tab;
-
-  $$$1.fn[NAME].noConflict = function () {
-    $$$1.fn[NAME] = JQUERY_NO_CONFLICT;
-    return Tab._jQueryInterface;
-  };
-
-  return Tab;
-}($);
-
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.6): index.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-(function ($$$1) {
-  if (typeof $$$1 === 'undefined') {
-    throw new TypeError('Bootstrap\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\'s JavaScript.');
-  }
-
-  var version = $$$1.fn.jquery.split(' ')[0].split('.');
-  var minMajor = 1;
-  var ltMajor = 2;
-  var minMinor = 9;
-  var minPatch = 1;
-  var maxMajor = 4;
-
-  if (version[0] < ltMajor && version[1] < minMinor || version[0] === minMajor && version[1] === minMinor && version[2] < minPatch || version[0] >= maxMajor) {
-    throw new Error('Bootstrap\'s JavaScript requires at least jQuery v1.9.1 but less than v4.0.0');
-  }
-})($);
-
-exports.Util = Util;
-exports.Alert = Alert;
-exports.Button = Button;
-exports.Carousel = Carousel;
-exports.Collapse = Collapse;
-exports.Dropdown = Dropdown;
-exports.Modal = Modal;
-exports.Popover = Popover;
-exports.Scrollspy = ScrollSpy;
-exports.Tab = Tab;
-exports.Tooltip = Tooltip;
-
-Object.defineProperty(exports, '__esModule', { value: true });
-
-})));
-//# sourceMappingURL=bootstrap.js.map
diff --git a/chall/src/js/bootstrap.min.js b/chall/src/js/bootstrap.min.js
deleted file mode 100644
index 534d533..0000000
--- a/chall/src/js/bootstrap.min.js
+++ /dev/null
@@ -1,7 +0,0 @@
-/*!
-  * Bootstrap v4.0.0 (https://getbootstrap.com)
-  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
-  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
-  */
-!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports,require("jquery"),require("popper.js")):"function"==typeof define&&define.amd?define(["exports","jquery","popper.js"],e):e(t.bootstrap={},t.jQuery,t.Popper)}(this,function(t,e,n){"use strict";function i(t,e){for(var n=0;n<e.length;n++){var i=e[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(t,i.key,i)}}function s(t,e,n){return e&&i(t.prototype,e),n&&i(t,n),t}function r(){return(r=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var n=arguments[e];for(var i in n)Object.prototype.hasOwnProperty.call(n,i)&&(t[i]=n[i])}return t}).apply(this,arguments)}e=e&&e.hasOwnProperty("default")?e.default:e,n=n&&n.hasOwnProperty("default")?n.default:n;var o,a,l,h,c,u,f,d,_,g,p,m,v,E,T,y,C,I,A,b,D,S,w,N,O,k,P=function(t){var e=!1;function n(e){var n=this,s=!1;return t(this).one(i.TRANSITION_END,function(){s=!0}),setTimeout(function(){s||i.triggerTransitionEnd(n)},e),this}var i={TRANSITION_END:"bsTransitionEnd",getUID:function(t){do{t+=~~(1e6*Math.random())}while(document.getElementById(t));return t},getSelectorFromElement:function(e){var n,i=e.getAttribute("data-target");i&&"#"!==i||(i=e.getAttribute("href")||""),"#"===i.charAt(0)&&(n=i,i=n="function"==typeof t.escapeSelector?t.escapeSelector(n).substr(1):n.replace(/(:|\.|\[|\]|,|=|@)/g,"\\$1"));try{return t(document).find(i).length>0?i:null}catch(t){return null}},reflow:function(t){return t.offsetHeight},triggerTransitionEnd:function(n){t(n).trigger(e.end)},supportsTransitionEnd:function(){return Boolean(e)},isElement:function(t){return(t[0]||t).nodeType},typeCheckConfig:function(t,e,n){for(var s in n)if(Object.prototype.hasOwnProperty.call(n,s)){var r=n[s],o=e[s],a=o&&i.isElement(o)?"element":(l=o,{}.toString.call(l).match(/\s([a-zA-Z]+)/)[1].toLowerCase());if(!new RegExp(r).test(a))throw new Error(t.toUpperCase()+': Option "'+s+'" provided type "'+a+'" but expected type "'+r+'".')}var l}};return e=("undefined"==typeof window||!window.QUnit)&&{end:"transitionend"},t.fn.emulateTransitionEnd=n,i.supportsTransitionEnd()&&(t.event.special[i.TRANSITION_END]={bindType:e.end,delegateType:e.end,handle:function(e){if(t(e.target).is(this))return e.handleObj.handler.apply(this,arguments)}}),i}(e),L=(a="alert",h="."+(l="bs.alert"),c=(o=e).fn[a],u={CLOSE:"close"+h,CLOSED:"closed"+h,CLICK_DATA_API:"click"+h+".data-api"},f="alert",d="fade",_="show",g=function(){function t(t){this._element=t}var e=t.prototype;return e.close=function(t){t=t||this._element;var e=this._getRootElement(t);this._triggerCloseEvent(e).isDefaultPrevented()||this._removeElement(e)},e.dispose=function(){o.removeData(this._element,l),this._element=null},e._getRootElement=function(t){var e=P.getSelectorFromElement(t),n=!1;return e&&(n=o(e)[0]),n||(n=o(t).closest("."+f)[0]),n},e._triggerCloseEvent=function(t){var e=o.Event(u.CLOSE);return o(t).trigger(e),e},e._removeElement=function(t){var e=this;o(t).removeClass(_),P.supportsTransitionEnd()&&o(t).hasClass(d)?o(t).one(P.TRANSITION_END,function(n){return e._destroyElement(t,n)}).emulateTransitionEnd(150):this._destroyElement(t)},e._destroyElement=function(t){o(t).detach().trigger(u.CLOSED).remove()},t._jQueryInterface=function(e){return this.each(function(){var n=o(this),i=n.data(l);i||(i=new t(this),n.data(l,i)),"close"===e&&i[e](this)})},t._handleDismiss=function(t){return function(e){e&&e.preventDefault(),t.close(this)}},s(t,null,[{key:"VERSION",get:function(){return"4.0.0"}}]),t}(),o(document).on(u.CLICK_DATA_API,'[data-dismiss="alert"]',g._handleDismiss(new g)),o.fn[a]=g._jQueryInterface,o.fn[a].Constructor=g,o.fn[a].noConflict=function(){return o.fn[a]=c,g._jQueryInterface},g),R=(m="button",E="."+(v="bs.button"),T=".data-api",y=(p=e).fn[m],C="active",I="btn",A="focus",b='[data-toggle^="button"]',D='[data-toggle="buttons"]',S="input",w=".active",N=".btn",O={CLICK_DATA_API:"click"+E+T,FOCUS_BLUR_DATA_API:"focus"+E+T+" blur"+E+T},k=function(){function t(t){this._element=t}var e=t.prototype;return e.toggle=function(){var t=!0,e=!0,n=p(this._element).closest(D)[0];if(n){var i=p(this._element).find(S)[0];if(i){if("radio"===i.type)if(i.checked&&p(this._element).hasClass(C))t=!1;else{var 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37:t.preventDefault(),this.prev();break;case 39:t.preventDefault(),this.next()}},C._getItemIndex=function(e){return this._items=t.makeArray(t(e).parent().find(y.ITEM)),this._items.indexOf(e)},C._getItemByDirection=function(t,e){var n=t===h,i=t===c,s=this._getItemIndex(e),r=this._items.length-1;if((i&&0===s||n&&s===r)&&!this._config.wrap)return e;var o=(s+(t===c?-1:1))%this._items.length;return-1===o?this._items[this._items.length-1]:this._items[o]},C._triggerSlideEvent=function(e,n){var i=this._getItemIndex(e),s=this._getItemIndex(t(this._element).find(y.ACTIVE_ITEM)[0]),r=t.Event(d.SLIDE,{relatedTarget:e,direction:n,from:s,to:i});return t(this._element).trigger(r),r},C._setActiveIndicatorElement=function(e){if(this._indicatorsElement){t(this._indicatorsElement).find(y.ACTIVE).removeClass(g);var n=this._indicatorsElement.children[this._getItemIndex(e)];n&&t(n).addClass(g)}},C._slide=function(e,n){var i,s,r,o=this,a=t(this._element).find(y.ACTIVE_ITEM)[0],l=this._getItemIndex(a),c=n||a&&this._getItemByDirection(e,a),_=this._getItemIndex(c),C=Boolean(this._interval);if(e===h?(i=v,s=E,r=u):(i=m,s=T,r=f),c&&t(c).hasClass(g))this._isSliding=!1;else if(!this._triggerSlideEvent(c,r).isDefaultPrevented()&&a&&c){this._isSliding=!0,C&&this.pause(),this._setActiveIndicatorElement(c);var I=t.Event(d.SLID,{relatedTarget:c,direction:r,from:l,to:_});P.supportsTransitionEnd()&&t(this._element).hasClass(p)?(t(c).addClass(s),P.reflow(c),t(a).addClass(i),t(c).addClass(i),t(a).one(P.TRANSITION_END,function(){t(c).removeClass(i+" "+s).addClass(g),t(a).removeClass(g+" "+s+" "+i),o._isSliding=!1,setTimeout(function(){return t(o._element).trigger(I)},0)}).emulateTransitionEnd(600)):(t(a).removeClass(g),t(c).addClass(g),this._isSliding=!1,t(this._element).trigger(I)),C&&this.cycle()}},o._jQueryInterface=function(e){return this.each(function(){var i=t(this).data(n),s=r({},a,t(this).data());"object"==typeof e&&(s=r({},s,e));var l="string"==typeof e?e:s.slide;if(i||(i=new o(this,s),t(this).data(n,i)),"number"==typeof e)i.to(e);else if("string"==typeof l){if("undefined"==typeof i[l])throw new TypeError('No method named "'+l+'"');i[l]()}else s.interval&&(i.pause(),i.cycle())})},o._dataApiClickHandler=function(e){var i=P.getSelectorFromElement(this);if(i){var s=t(i)[0];if(s&&t(s).hasClass(_)){var a=r({},t(s).data(),t(this).data()),l=this.getAttribute("data-slide-to");l&&(a.interval=!1),o._jQueryInterface.call(t(s),a),l&&t(s).data(n).to(l),e.preventDefault()}}},s(o,null,[{key:"VERSION",get:function(){return"4.0.0"}},{key:"Default",get:function(){return a}}]),o}();return t(document).on(d.CLICK_DATA_API,y.DATA_SLIDE,C._dataApiClickHandler),t(window).on(d.LOAD_DATA_API,function(){t(y.DATA_RIDE).each(function(){var e=t(this);C._jQueryInterface.call(e,e.data())})}),t.fn[e]=C._jQueryInterface,t.fn[e].Constructor=C,t.fn[e].noConflict=function(){return t.fn[e]=o,C._jQueryInterface},C}(e),H=function(t){var e="collapse",n="bs.collapse",i="."+n,o=t.fn[e],a={toggle:!0,parent:""},l={toggle:"boolean",parent:"(string|element)"},h={SHOW:"show"+i,SHOWN:"shown"+i,HIDE:"hide"+i,HIDDEN:"hidden"+i,CLICK_DATA_API:"click"+i+".data-api"},c="show",u="collapse",f="collapsing",d="collapsed",_="width",g="height",p={ACTIVES:".show, .collapsing",DATA_TOGGLE:'[data-toggle="collapse"]'},m=function(){function i(e,n){this._isTransitioning=!1,this._element=e,this._config=this._getConfig(n),this._triggerArray=t.makeArray(t('[data-toggle="collapse"][href="#'+e.id+'"],[data-toggle="collapse"][data-target="#'+e.id+'"]'));for(var i=t(p.DATA_TOGGLE),s=0;s<i.length;s++){var r=i[s],o=P.getSelectorFromElement(r);null!==o&&t(o).filter(e).length>0&&(this._selector=o,this._triggerArray.push(r))}this._parent=this._config.parent?this._getParent():null,this._config.parent||this._addAriaAndCollapsedClass(this._element,this._triggerArray),this._config.toggle&&this.toggle()}var o=i.prototype;return o.toggle=function(){t(this._element).hasClass(c)?this.hide():this.show()},o.show=function(){var e,s,r=this;if(!this._isTransitioning&&!t(this._element).hasClass(c)&&(this._parent&&0===(e=t.makeArray(t(this._parent).find(p.ACTIVES).filter('[data-parent="'+this._config.parent+'"]'))).length&&(e=null),!(e&&(s=t(e).not(this._selector).data(n))&&s._isTransitioning))){var o=t.Event(h.SHOW);if(t(this._element).trigger(o),!o.isDefaultPrevented()){e&&(i._jQueryInterface.call(t(e).not(this._selector),"hide"),s||t(e).data(n,null));var a=this._getDimension();t(this._element).removeClass(u).addClass(f),this._element.style[a]=0,this._triggerArray.length>0&&t(this._triggerArray).removeClass(d).attr("aria-expanded",!0),this.setTransitioning(!0);var l=function(){t(r._element).removeClass(f).addClass(u).addClass(c),r._element.style[a]="",r.setTransitioning(!1),t(r._element).trigger(h.SHOWN)};if(P.supportsTransitionEnd()){var _="scroll"+(a[0].toUpperCase()+a.slice(1));t(this._element).one(P.TRANSITION_END,l).emulateTransitionEnd(600),this._element.style[a]=this._element[_]+"px"}else l()}}},o.hide=function(){var e=this;if(!this._isTransitioning&&t(this._element).hasClass(c)){var n=t.Event(h.HIDE);if(t(this._element).trigger(n),!n.isDefaultPrevented()){var i=this._getDimension();if(this._element.style[i]=this._element.getBoundingClientRect()[i]+"px",P.reflow(this._element),t(this._element).addClass(f).removeClass(u).removeClass(c),this._triggerArray.length>0)for(var s=0;s<this._triggerArray.length;s++){var r=this._triggerArray[s],o=P.getSelectorFromElement(r);if(null!==o)t(o).hasClass(c)||t(r).addClass(d).attr("aria-expanded",!1)}this.setTransitioning(!0);var 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e=t(this),s=e.data(n)?"toggle":i.data();m._jQueryInterface.call(e,s)})}),t.fn[e]=m._jQueryInterface,t.fn[e].Constructor=m,t.fn[e].noConflict=function(){return t.fn[e]=o,m._jQueryInterface},m}(e),W=function(t){var e="dropdown",i="bs.dropdown",o="."+i,a=".data-api",l=t.fn[e],h=new RegExp("38|40|27"),c={HIDE:"hide"+o,HIDDEN:"hidden"+o,SHOW:"show"+o,SHOWN:"shown"+o,CLICK:"click"+o,CLICK_DATA_API:"click"+o+a,KEYDOWN_DATA_API:"keydown"+o+a,KEYUP_DATA_API:"keyup"+o+a},u="disabled",f="show",d="dropup",_="dropright",g="dropleft",p="dropdown-menu-right",m="dropdown-menu-left",v="position-static",E='[data-toggle="dropdown"]',T=".dropdown form",y=".dropdown-menu",C=".navbar-nav",I=".dropdown-menu .dropdown-item:not(.disabled)",A="top-start",b="top-end",D="bottom-start",S="bottom-end",w="right-start",N="left-start",O={offset:0,flip:!0,boundary:"scrollParent"},k={offset:"(number|string|function)",flip:"boolean",boundary:"(string|element)"},L=function(){function a(t,e){this._element=t,this._popper=null,this._config=this._getConfig(e),this._menu=this._getMenuElement(),this._inNavbar=this._detectNavbar(),this._addEventListeners()}var l=a.prototype;return l.toggle=function(){if(!this._element.disabled&&!t(this._element).hasClass(u)){var e=a._getParentFromElement(this._element),i=t(this._menu).hasClass(f);if(a._clearMenus(),!i){var s={relatedTarget:this._element},r=t.Event(c.SHOW,s);if(t(e).trigger(r),!r.isDefaultPrevented()){if(!this._inNavbar){if("undefined"==typeof n)throw new TypeError("Bootstrap dropdown require Popper.js (https://popper.js.org)");var o=this._element;t(e).hasClass(d)&&(t(this._menu).hasClass(m)||t(this._menu).hasClass(p))&&(o=e),"scrollParent"!==this._config.boundary&&t(e).addClass(v),this._popper=new n(o,this._menu,this._getPopperConfig())}"ontouchstart"in document.documentElement&&0===t(e).closest(C).length&&t("body").children().on("mouseover",null,t.noop),this._element.focus(),this._element.setAttribute("aria-expanded",!0),t(this._menu).toggleClass(f),t(e).toggleClass(f).trigger(t.Event(c.SHOWN,s))}}}},l.dispose=function(){t.removeData(this._element,i),t(this._element).off(o),this._element=null,this._menu=null,null!==this._popper&&(this._popper.destroy(),this._popper=null)},l.update=function(){this._inNavbar=this._detectNavbar(),null!==this._popper&&this._popper.scheduleUpdate()},l._addEventListeners=function(){var e=this;t(this._element).on(c.CLICK,function(t){t.preventDefault(),t.stopPropagation(),e.toggle()})},l._getConfig=function(n){return n=r({},this.constructor.Default,t(this._element).data(),n),P.typeCheckConfig(e,n,this.constructor.DefaultType),n},l._getMenuElement=function(){if(!this._menu){var e=a._getParentFromElement(this._element);this._menu=t(e).find(y)[0]}return this._menu},l._getPlacement=function(){var e=t(this._element).parent(),n=D;return e.hasClass(d)?(n=A,t(this._menu).hasClass(p)&&(n=b)):e.hasClass(_)?n=w:e.hasClass(g)?n=N:t(this._menu).hasClass(p)&&(n=S),n},l._detectNavbar=function(){return t(this._element).closest(".navbar").length>0},l._getPopperConfig=function(){var t=this,e={};return"function"==typeof this._config.offset?e.fn=function(e){return e.offsets=r({},e.offsets,t._config.offset(e.offsets)||{}),e}:e.offset=this._config.offset,{placement:this._getPlacement(),modifiers:{offset:e,flip:{enabled:this._config.flip},preventOverflow:{boundariesElement:this._config.boundary}}}},a._jQueryInterface=function(e){return this.each(function(){var n=t(this).data(i);if(n||(n=new a(this,"object"==typeof e?e:null),t(this).data(i,n)),"string"==typeof e){if("undefined"==typeof n[e])throw new TypeError('No method named "'+e+'"');n[e]()}})},a._clearMenus=function(e){if(!e||3!==e.which&&("keyup"!==e.type||9===e.which))for(var n=t.makeArray(t(E)),s=0;s<n.length;s++){var r=a._getParentFromElement(n[s]),o=t(n[s]).data(i),l={relatedTarget:n[s]};if(o){var h=o._menu;if(t(r).hasClass(f)&&!(e&&("click"===e.type&&/input|textarea/i.test(e.target.tagName)||"keyup"===e.type&&9===e.which)&&t.contains(r,e.target))){var u=t.Event(c.HIDE,l);t(r).trigger(u),u.isDefaultPrevented()||("ontouchstart"in document.documentElement&&t("body").children().off("mouseover",null,t.noop),n[s].setAttribute("aria-expanded","false"),t(h).removeClass(f),t(r).removeClass(f).trigger(t.Event(c.HIDDEN,l)))}}}},a._getParentFromElement=function(e){var n,i=P.getSelectorFromElement(e);return i&&(n=t(i)[0]),n||e.parentNode},a._dataApiKeydownHandler=function(e){if((/input|textarea/i.test(e.target.tagName)?!(32===e.which||27!==e.which&&(40!==e.which&&38!==e.which||t(e.target).closest(y).length)):h.test(e.which))&&(e.preventDefault(),e.stopPropagation(),!this.disabled&&!t(this).hasClass(u))){var n=a._getParentFromElement(this),i=t(n).hasClass(f);if((i||27===e.which&&32===e.which)&&(!i||27!==e.which&&32!==e.which)){var s=t(n).find(I).get();if(0!==s.length){var r=s.indexOf(e.target);38===e.which&&r>0&&r--,40===e.which&&r<s.length-1&&r++,r<0&&(r=0),s[r].focus()}}else{if(27===e.which){var o=t(n).find(E)[0];t(o).trigger("focus")}t(this).trigger("click")}}},s(a,null,[{key:"VERSION",get:function(){return"4.0.0"}},{key:"Default",get:function(){return O}},{key:"DefaultType",get:function(){return k}}]),a}();return t(document).on(c.KEYDOWN_DATA_API,E,L._dataApiKeydownHandler).on(c.KEYDOWN_DATA_API,y,L._dataApiKeydownHandler).on(c.CLICK_DATA_API+" "+c.KEYUP_DATA_API,L._clearMenus).on(c.CLICK_DATA_API,E,function(e){e.preventDefault(),e.stopPropagation(),L._jQueryInterface.call(t(this),"toggle")}).on(c.CLICK_DATA_API,T,function(t){t.stopPropagation()}),t.fn[e]=L._jQueryInterface,t.fn[e].Constructor=L,t.fn[e].noConflict=function(){return t.fn[e]=l,L._jQueryInterface},L}(e),M=function(t){var e="modal",n="bs.modal",i="."+n,o=t.fn.modal,a={backdrop:!0,keyboard:!0,focus:!0,show:!0},l={backdrop:"(boolean|string)",keyboard:"boolean",focus:"boolean",show:"boolean"},h={HIDE:"hide"+i,HIDDEN:"hidden"+i,SHOW:"show"+i,SHOWN:"shown"+i,FOCUSIN:"focusin"+i,RESIZE:"resize"+i,CLICK_DISMISS:"click.dismiss"+i,KEYDOWN_DISMISS:"keydown.dismiss"+i,MOUSEUP_DISMISS:"mouseup.dismiss"+i,MOUSEDOWN_DISMISS:"mousedown.dismiss"+i,CLICK_DATA_API:"click"+i+".data-api"},c="modal-scrollbar-measure",u="modal-backdrop",f="modal-open",d="fade",_="show",g={DIALOG:".modal-dialog",DATA_TOGGLE:'[data-toggle="modal"]',DATA_DISMISS:'[data-dismiss="modal"]',FIXED_CONTENT:".fixed-top, .fixed-bottom, .is-fixed, .sticky-top",STICKY_CONTENT:".sticky-top",NAVBAR_TOGGLER:".navbar-toggler"},p=function(){function o(e,n){this._config=this._getConfig(n),this._element=e,this._dialog=t(e).find(g.DIALOG)[0],this._backdrop=null,this._isShown=!1,this._isBodyOverflowing=!1,this._ignoreBackdropClick=!1,this._originalBodyPadding=0,this._scrollbarWidth=0}var p=o.prototype;return p.toggle=function(t){return this._isShown?this.hide():this.show(t)},p.show=function(e){var n=this;if(!this._isTransitioning&&!this._isShown){P.supportsTransitionEnd()&&t(this._element).hasClass(d)&&(this._isTransitioning=!0);var i=t.Event(h.SHOW,{relatedTarget:e});t(this._element).trigger(i),this._isShown||i.isDefaultPrevented()||(this._isShown=!0,this._checkScrollbar(),this._setScrollbar(),this._adjustDialog(),t(document.body).addClass(f),this._setEscapeEvent(),this._setResizeEvent(),t(this._element).on(h.CLICK_DISMISS,g.DATA_DISMISS,function(t){return n.hide(t)}),t(this._dialog).on(h.MOUSEDOWN_DISMISS,function(){t(n._element).one(h.MOUSEUP_DISMISS,function(e){t(e.target).is(n._element)&&(n._ignoreBackdropClick=!0)})}),this._showBackdrop(function(){return n._showElement(e)}))}},p.hide=function(e){var n=this;if(e&&e.preventDefault(),!this._isTransitioning&&this._isShown){var i=t.Event(h.HIDE);if(t(this._element).trigger(i),this._isShown&&!i.isDefaultPrevented()){this._isShown=!1;var s=P.supportsTransitionEnd()&&t(this._element).hasClass(d);s&&(this._isTransitioning=!0),this._setEscapeEvent(),this._setResizeEvent(),t(document).off(h.FOCUSIN),t(this._element).removeClass(_),t(this._element).off(h.CLICK_DISMISS),t(this._dialog).off(h.MOUSEDOWN_DISMISS),s?t(this._element).one(P.TRANSITION_END,function(t){return n._hideModal(t)}).emulateTransitionEnd(300):this._hideModal()}}},p.dispose=function(){t.removeData(this._element,n),t(window,document,this._element,this._backdrop).off(i),this._config=null,this._element=null,this._dialog=null,this._backdrop=null,this._isShown=null,this._isBodyOverflowing=null,this._ignoreBackdropClick=null,this._scrollbarWidth=null},p.handleUpdate=function(){this._adjustDialog()},p._getConfig=function(t){return t=r({},a,t),P.typeCheckConfig(e,t,l),t},p._showElement=function(e){var n=this,i=P.supportsTransitionEnd()&&t(this._element).hasClass(d);this._element.parentNode&&this._element.parentNode.nodeType===Node.ELEMENT_NODE||document.body.appendChild(this._element),this._element.style.display="block",this._element.removeAttribute("aria-hidden"),this._element.scrollTop=0,i&&P.reflow(this._element),t(this._element).addClass(_),this._config.focus&&this._enforceFocus();var s=t.Event(h.SHOWN,{relatedTarget:e}),r=function(){n._config.focus&&n._element.focus(),n._isTransitioning=!1,t(n._element).trigger(s)};i?t(this._dialog).one(P.TRANSITION_END,r).emulateTransitionEnd(300):r()},p._enforceFocus=function(){var e=this;t(document).off(h.FOCUSIN).on(h.FOCUSIN,function(n){document!==n.target&&e._element!==n.target&&0===t(e._element).has(n.target).length&&e._element.focus()})},p._setEscapeEvent=function(){var e=this;this._isShown&&this._config.keyboard?t(this._element).on(h.KEYDOWN_DISMISS,function(t){27===t.which&&(t.preventDefault(),e.hide())}):this._isShown||t(this._element).off(h.KEYDOWN_DISMISS)},p._setResizeEvent=function(){var e=this;this._isShown?t(window).on(h.RESIZE,function(t){return e.handleUpdate(t)}):t(window).off(h.RESIZE)},p._hideModal=function(){var e=this;this._element.style.display="none",this._element.setAttribute("aria-hidden",!0),this._isTransitioning=!1,this._showBackdrop(function(){t(document.body).removeClass(f),e._resetAdjustments(),e._resetScrollbar(),t(e._element).trigger(h.HIDDEN)})},p._removeBackdrop=function(){this._backdrop&&(t(this._backdrop).remove(),this._backdrop=null)},p._showBackdrop=function(e){var n=this,i=t(this._element).hasClass(d)?d:"";if(this._isShown&&this._config.backdrop){var s=P.supportsTransitionEnd()&&i;if(this._backdrop=document.createElement("div"),this._backdrop.className=u,i&&t(this._backdrop).addClass(i),t(this._backdrop).appendTo(document.body),t(this._element).on(h.CLICK_DISMISS,function(t){n._ignoreBackdropClick?n._ignoreBackdropClick=!1:t.target===t.currentTarget&&("static"===n._config.backdrop?n._element.focus():n.hide())}),s&&P.reflow(this._backdrop),t(this._backdrop).addClass(_),!e)return;if(!s)return void e();t(this._backdrop).one(P.TRANSITION_END,e).emulateTransitionEnd(150)}else if(!this._isShown&&this._backdrop){t(this._backdrop).removeClass(_);var r=function(){n._removeBackdrop(),e&&e()};P.supportsTransitionEnd()&&t(this._element).hasClass(d)?t(this._backdrop).one(P.TRANSITION_END,r).emulateTransitionEnd(150):r()}else e&&e()},p._adjustDialog=function(){var t=this._element.scrollHeight>document.documentElement.clientHeight;!this._isBodyOverflowing&&t&&(this._element.style.paddingLeft=this._scrollbarWidth+"px"),this._isBodyOverflowing&&!t&&(this._element.style.paddingRight=this._scrollbarWidth+"px")},p._resetAdjustments=function(){this._element.style.paddingLeft="",this._element.style.paddingRight=""},p._checkScrollbar=function(){var t=document.body.getBoundingClientRect();this._isBodyOverflowing=t.left+t.right<window.innerWidth,this._scrollbarWidth=this._getScrollbarWidth()},p._setScrollbar=function(){var e=this;if(this._isBodyOverflowing){t(g.FIXED_CONTENT).each(function(n,i){var s=t(i)[0].style.paddingRight,r=t(i).css("padding-right");t(i).data("padding-right",s).css("padding-right",parseFloat(r)+e._scrollbarWidth+"px")}),t(g.STICKY_CONTENT).each(function(n,i){var s=t(i)[0].style.marginRight,r=t(i).css("margin-right");t(i).data("margin-right",s).css("margin-right",parseFloat(r)-e._scrollbarWidth+"px")}),t(g.NAVBAR_TOGGLER).each(function(n,i){var s=t(i)[0].style.marginRight,r=t(i).css("margin-right");t(i).data("margin-right",s).css("margin-right",parseFloat(r)+e._scrollbarWidth+"px")});var n=document.body.style.paddingRight,i=t("body").css("padding-right");t("body").data("padding-right",n).css("padding-right",parseFloat(i)+this._scrollbarWidth+"px")}},p._resetScrollbar=function(){t(g.FIXED_CONTENT).each(function(e,n){var i=t(n).data("padding-right");"undefined"!=typeof i&&t(n).css("padding-right",i).removeData("padding-right")}),t(g.STICKY_CONTENT+", "+g.NAVBAR_TOGGLER).each(function(e,n){var i=t(n).data("margin-right");"undefined"!=typeof i&&t(n).css("margin-right",i).removeData("margin-right")});var e=t("body").data("padding-right");"undefined"!=typeof e&&t("body").css("padding-right",e).removeData("padding-right")},p._getScrollbarWidth=function(){var t=document.createElement("div");t.className=c,document.body.appendChild(t);var e=t.getBoundingClientRect().width-t.clientWidth;return document.body.removeChild(t),e},o._jQueryInterface=function(e,i){return this.each(function(){var s=t(this).data(n),a=r({},o.Default,t(this).data(),"object"==typeof e&&e);if(s||(s=new o(this,a),t(this).data(n,s)),"string"==typeof e){if("undefined"==typeof s[e])throw new TypeError('No method named "'+e+'"');s[e](i)}else a.show&&s.show(i)})},s(o,null,[{key:"VERSION",get:function(){return"4.0.0"}},{key:"Default",get:function(){return a}}]),o}();return t(document).on(h.CLICK_DATA_API,g.DATA_TOGGLE,function(e){var i,s=this,o=P.getSelectorFromElement(this);o&&(i=t(o)[0]);var 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r=this.getTipElement(),o=P.getUID(this.constructor.NAME);r.setAttribute("id",o),this.element.setAttribute("aria-describedby",o),this.setContent(),this.config.animation&&t(r).addClass(g);var l="function"==typeof this.config.placement?this.config.placement.call(this,r,this.element):this.config.placement,h=this._getAttachment(l);this.addAttachmentClass(h);var c=!1===this.config.container?document.body:t(this.config.container);t(r).data(this.constructor.DATA_KEY,this),t.contains(this.element.ownerDocument.documentElement,this.tip)||t(r).appendTo(c),t(this.element).trigger(this.constructor.Event.INSERTED),this._popper=new n(this.element,r,{placement:h,modifiers:{offset:{offset:this.config.offset},flip:{behavior:this.config.fallbackPlacement},arrow:{element:v},preventOverflow:{boundariesElement:this.config.boundary}},onCreate:function(t){t.originalPlacement!==t.placement&&e._handlePopperPlacementChange(t)},onUpdate:function(t){e._handlePopperPlacementChange(t)}}),t(r).addClass(p),"ontouchstart"in document.documentElement&&t("body").children().on("mouseover",null,t.noop);var u=function(){e.config.animation&&e._fixTransition();var n=e._hoverState;e._hoverState=null,t(e.element).trigger(e.constructor.Event.SHOWN),n===d&&e._leave(null,e)};P.supportsTransitionEnd()&&t(this.tip).hasClass(g)?t(this.tip).one(P.TRANSITION_END,u).emulateTransitionEnd(a._TRANSITION_DURATION):u()}},I.hide=function(e){var n=this,i=this.getTipElement(),s=t.Event(this.constructor.Event.HIDE),r=function(){n._hoverState!==f&&i.parentNode&&i.parentNode.removeChild(i),n._cleanTipClass(),n.element.removeAttribute("aria-describedby"),t(n.element).trigger(n.constructor.Event.HIDDEN),null!==n._popper&&n._popper.destroy(),e&&e()};t(this.element).trigger(s),s.isDefaultPrevented()||(t(i).removeClass(p),"ontouchstart"in document.documentElement&&t("body").children().off("mouseover",null,t.noop),this._activeTrigger[y]=!1,this._activeTrigger[T]=!1,this._activeTrigger[E]=!1,P.supportsTransitionEnd()&&t(this.tip).hasClass(g)?t(i).one(P.TRANSITION_END,r).emulateTransitionEnd(150):r(),this._hoverState="")},I.update=function(){null!==this._popper&&this._popper.scheduleUpdate()},I.isWithContent=function(){return Boolean(this.getTitle())},I.addAttachmentClass=function(e){t(this.getTipElement()).addClass("bs-tooltip-"+e)},I.getTipElement=function(){return this.tip=this.tip||t(this.config.template)[0],this.tip},I.setContent=function(){var e=t(this.getTipElement());this.setElementContent(e.find(m),this.getTitle()),e.removeClass(g+" "+p)},I.setElementContent=function(e,n){var i=this.config.html;"object"==typeof n&&(n.nodeType||n.jquery)?i?t(n).parent().is(e)||e.empty().append(n):e.text(t(n).text()):e[i?"html":"text"](n)},I.getTitle=function(){var t=this.element.getAttribute("data-original-title");return t||(t="function"==typeof this.config.title?this.config.title.call(this.element):this.config.title),t},I._getAttachment=function(t){return c[t.toUpperCase()]},I._setListeners=function(){var e=this;this.config.trigger.split(" ").forEach(function(n){if("click"===n)t(e.element).on(e.constructor.Event.CLICK,e.config.selector,function(t){return e.toggle(t)});else if(n!==C){var i=n===E?e.constructor.Event.MOUSEENTER:e.constructor.Event.FOCUSIN,s=n===E?e.constructor.Event.MOUSELEAVE:e.constructor.Event.FOCUSOUT;t(e.element).on(i,e.config.selector,function(t){return e._enter(t)}).on(s,e.config.selector,function(t){return e._leave(t)})}t(e.element).closest(".modal").on("hide.bs.modal",function(){return e.hide()})}),this.config.selector?this.config=r({},this.config,{trigger:"manual",selector:""}):this._fixTitle()},I._fixTitle=function(){var t=typeof this.element.getAttribute("data-original-title");(this.element.getAttribute("title")||"string"!==t)&&(this.element.setAttribute("data-original-title",this.element.getAttribute("title")||""),this.element.setAttribute("title",""))},I._enter=function(e,n){var i=this.constructor.DATA_KEY;(n=n||t(e.currentTarget).data(i))||(n=new this.constructor(e.currentTarget,this._getDelegateConfig()),t(e.currentTarget).data(i,n)),e&&(n._activeTrigger["focusin"===e.type?T:E]=!0),t(n.getTipElement()).hasClass(p)||n._hoverState===f?n._hoverState=f:(clearTimeout(n._timeout),n._hoverState=f,n.config.delay&&n.config.delay.show?n._timeout=setTimeout(function(){n._hoverState===f&&n.show()},n.config.delay.show):n.show())},I._leave=function(e,n){var i=this.constructor.DATA_KEY;(n=n||t(e.currentTarget).data(i))||(n=new this.constructor(e.currentTarget,this._getDelegateConfig()),t(e.currentTarget).data(i,n)),e&&(n._activeTrigger["focusout"===e.type?T:E]=!1),n._isWithActiveTrigger()||(clearTimeout(n._timeout),n._hoverState=d,n.config.delay&&n.config.delay.hide?n._timeout=setTimeout(function(){n._hoverState===d&&n.hide()},n.config.delay.hide):n.hide())},I._isWithActiveTrigger=function(){for(var t in this._activeTrigger)if(this._activeTrigger[t])return!0;return!1},I._getConfig=function(n){return"number"==typeof(n=r({},this.constructor.Default,t(this.element).data(),n)).delay&&(n.delay={show:n.delay,hide:n.delay}),"number"==typeof n.title&&(n.title=n.title.toString()),"number"==typeof n.content&&(n.content=n.content.toString()),P.typeCheckConfig(e,n,this.constructor.DefaultType),n},I._getDelegateConfig=function(){var t={};if(this.config)for(var e in this.config)this.constructor.Default[e]!==this.config[e]&&(t[e]=this.config[e]);return t},I._cleanTipClass=function(){var e=t(this.getTipElement()),n=e.attr("class").match(l);null!==n&&n.length>0&&e.removeClass(n.join(""))},I._handlePopperPlacementChange=function(t){this._cleanTipClass(),this.addAttachmentClass(this._getAttachment(t.placement))},I._fixTransition=function(){var e=this.getTipElement(),n=this.config.animation;null===e.getAttribute("x-placement")&&(t(e).removeClass(g),this.config.animation=!1,this.hide(),this.show(),this.config.animation=n)},a._jQueryInterface=function(e){return this.each(function(){var n=t(this).data(i),s="object"==typeof e&&e;if((n||!/dispose|hide/.test(e))&&(n||(n=new a(this,s),t(this).data(i,n)),"string"==typeof e)){if("undefined"==typeof n[e])throw new TypeError('No method named "'+e+'"');n[e]()}})},s(a,null,[{key:"VERSION",get:function(){return"4.0.0"}},{key:"Default",get:function(){return u}},{key:"NAME",get:function(){return e}},{key:"DATA_KEY",get:function(){return i}},{key:"Event",get:function(){return _}},{key:"EVENT_KEY",get:function(){return o}},{key:"DefaultType",get:function(){return h}}]),a}();return t.fn[e]=I._jQueryInterface,t.fn[e].Constructor=I,t.fn[e].noConflict=function(){return t.fn[e]=a,I._jQueryInterface},I}(e),x=function(t){var e="popover",n="bs.popover",i="."+n,o=t.fn[e],a=new 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this.tip=this.tip||t(this.config.template)[0],this.tip},m.setContent=function(){var e=t(this.getTipElement());this.setElementContent(e.find(f),this.getTitle());var n=this._getContent();"function"==typeof n&&(n=n.call(this.element)),this.setElementContent(e.find(d),n),e.removeClass(c+" "+u)},m._getContent=function(){return this.element.getAttribute("data-content")||this.config.content},m._cleanTipClass=function(){var e=t(this.getTipElement()),n=e.attr("class").match(a);null!==n&&n.length>0&&e.removeClass(n.join(""))},p._jQueryInterface=function(e){return this.each(function(){var i=t(this).data(n),s="object"==typeof e?e:null;if((i||!/destroy|hide/.test(e))&&(i||(i=new p(this,s),t(this).data(n,i)),"string"==typeof e)){if("undefined"==typeof i[e])throw new TypeError('No method named "'+e+'"');i[e]()}})},s(p,null,[{key:"VERSION",get:function(){return"4.0.0"}},{key:"Default",get:function(){return l}},{key:"NAME",get:function(){return e}},{key:"DATA_KEY",get:function(){return 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"+f.NAV_LINKS+","+this._config.target+" "+f.LIST_ITEMS+","+this._config.target+" "+f.DROPDOWN_ITEMS,this._offsets=[],this._targets=[],this._activeTarget=null,this._scrollHeight=0,t(this._scrollElement).on(h.SCROLL,function(t){return i._process(t)}),this.refresh(),this._process()}var g=o.prototype;return g.refresh=function(){var e=this,n=this._scrollElement===this._scrollElement.window?d:_,i="auto"===this._config.method?n:this._config.method,s=i===_?this._getScrollTop():0;this._offsets=[],this._targets=[],this._scrollHeight=this._getScrollHeight(),t.makeArray(t(this._selector)).map(function(e){var n,r=P.getSelectorFromElement(e);if(r&&(n=t(r)[0]),n){var o=n.getBoundingClientRect();if(o.width||o.height)return[t(n)[i]().top+s,r]}return null}).filter(function(t){return t}).sort(function(t,e){return t[0]-e[0]}).forEach(function(t){e._offsets.push(t[0]),e._targets.push(t[1])})},g.dispose=function(){t.removeData(this._element,n),t(this._scrollElement).off(i),this._element=null,this._scrollElement=null,this._config=null,this._selector=null,this._offsets=null,this._targets=null,this._activeTarget=null,this._scrollHeight=null},g._getConfig=function(n){if("string"!=typeof(n=r({},a,n)).target){var i=t(n.target).attr("id");i||(i=P.getUID(e),t(n.target).attr("id",i)),n.target="#"+i}return P.typeCheckConfig(e,n,l),n},g._getScrollTop=function(){return this._scrollElement===window?this._scrollElement.pageYOffset:this._scrollElement.scrollTop},g._getScrollHeight=function(){return this._scrollElement.scrollHeight||Math.max(document.body.scrollHeight,document.documentElement.scrollHeight)},g._getOffsetHeight=function(){return this._scrollElement===window?window.innerHeight:this._scrollElement.getBoundingClientRect().height},g._process=function(){var t=this._getScrollTop()+this._config.offset,e=this._getScrollHeight(),n=this._config.offset+e-this._getOffsetHeight();if(this._scrollHeight!==e&&this.refresh(),t>=n){var i=this._targets[this._targets.length-1];this._activeTarget!==i&&this._activate(i)}else{if(this._activeTarget&&t<this._offsets[0]&&this._offsets[0]>0)return this._activeTarget=null,void this._clear();for(var s=this._offsets.length;s--;){this._activeTarget!==this._targets[s]&&t>=this._offsets[s]&&("undefined"==typeof this._offsets[s+1]||t<this._offsets[s+1])&&this._activate(this._targets[s])}}},g._activate=function(e){this._activeTarget=e,this._clear();var n=this._selector.split(",");n=n.map(function(t){return t+'[data-target="'+e+'"],'+t+'[href="'+e+'"]'});var i=t(n.join(","));i.hasClass(c)?(i.closest(f.DROPDOWN).find(f.DROPDOWN_TOGGLE).addClass(u),i.addClass(u)):(i.addClass(u),i.parents(f.NAV_LIST_GROUP).prev(f.NAV_LINKS+", "+f.LIST_ITEMS).addClass(u),i.parents(f.NAV_LIST_GROUP).prev(f.NAV_ITEMS).children(f.NAV_LINKS).addClass(u)),t(this._scrollElement).trigger(h.ACTIVATE,{relatedTarget:e})},g._clear=function(){t(this._selector).filter(f.ACTIVE).removeClass(u)},o._jQueryInterface=function(e){return this.each(function(){var i=t(this).data(n);if(i||(i=new o(this,"object"==typeof e&&e),t(this).data(n,i)),"string"==typeof e){if("undefined"==typeof i[e])throw new TypeError('No method named "'+e+'"');i[e]()}})},s(o,null,[{key:"VERSION",get:function(){return"4.0.0"}},{key:"Default",get:function(){return a}}]),o}();return t(window).on(h.LOAD_DATA_API,function(){for(var e=t.makeArray(t(f.DATA_SPY)),n=e.length;n--;){var i=t(e[n]);g._jQueryInterface.call(i,i.data())}}),t.fn[e]=g._jQueryInterface,t.fn[e].Constructor=g,t.fn[e].noConflict=function(){return t.fn[e]=o,g._jQueryInterface},g}(e),V=function(t){var e="bs.tab",n="."+e,i=t.fn.tab,r={HIDE:"hide"+n,HIDDEN:"hidden"+n,SHOW:"show"+n,SHOWN:"shown"+n,CLICK_DATA_API:"click.bs.tab.data-api"},o="dropdown-menu",a="active",l="disabled",h="fade",c="show",u=".dropdown",f=".nav, .list-group",d=".active",_="> li > .active",g='[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]',p=".dropdown-toggle",m="> .dropdown-menu .active",v=function(){function n(t){this._element=t}var i=n.prototype;return i.show=function(){var e=this;if(!(this._element.parentNode&&this._element.parentNode.nodeType===Node.ELEMENT_NODE&&t(this._element).hasClass(a)||t(this._element).hasClass(l))){var n,i,s=t(this._element).closest(f)[0],o=P.getSelectorFromElement(this._element);if(s){var h="UL"===s.nodeName?_:d;i=(i=t.makeArray(t(s).find(h)))[i.length-1]}var c=t.Event(r.HIDE,{relatedTarget:this._element}),u=t.Event(r.SHOW,{relatedTarget:i});if(i&&t(i).trigger(c),t(this._element).trigger(u),!u.isDefaultPrevented()&&!c.isDefaultPrevented()){o&&(n=t(o)[0]),this._activate(this._element,s);var g=function(){var n=t.Event(r.HIDDEN,{relatedTarget:e._element}),s=t.Event(r.SHOWN,{relatedTarget:i});t(i).trigger(n),t(e._element).trigger(s)};n?this._activate(n,n.parentNode,g):g()}}},i.dispose=function(){t.removeData(this._element,e),this._element=null},i._activate=function(e,n,i){var s=this,r=("UL"===n.nodeName?t(n).find(_):t(n).children(d))[0],o=i&&P.supportsTransitionEnd()&&r&&t(r).hasClass(h),a=function(){return s._transitionComplete(e,r,i)};r&&o?t(r).one(P.TRANSITION_END,a).emulateTransitionEnd(150):a()},i._transitionComplete=function(e,n,i){if(n){t(n).removeClass(c+" "+a);var s=t(n.parentNode).find(m)[0];s&&t(s).removeClass(a),"tab"===n.getAttribute("role")&&n.setAttribute("aria-selected",!1)}if(t(e).addClass(a),"tab"===e.getAttribute("role")&&e.setAttribute("aria-selected",!0),P.reflow(e),t(e).addClass(c),e.parentNode&&t(e.parentNode).hasClass(o)){var r=t(e).closest(u)[0];r&&t(r).find(p).addClass(a),e.setAttribute("aria-expanded",!0)}i&&i()},n._jQueryInterface=function(i){return this.each(function(){var s=t(this),r=s.data(e);if(r||(r=new n(this),s.data(e,r)),"string"==typeof i){if("undefined"==typeof r[i])throw new TypeError('No method named "'+i+'"');r[i]()}})},s(n,null,[{key:"VERSION",get:function(){return"4.0.0"}}]),n}();return t(document).on(r.CLICK_DATA_API,g,function(e){e.preventDefault(),v._jQueryInterface.call(t(this),"show")}),t.fn.tab=v._jQueryInterface,t.fn.tab.Constructor=v,t.fn.tab.noConflict=function(){return t.fn.tab=i,v._jQueryInterface},v}(e);!function(t){if("undefined"==typeof t)throw new TypeError("Bootstrap's JavaScript requires jQuery. jQuery must be included before Bootstrap's JavaScript.");var e=t.fn.jquery.split(" ")[0].split(".");if(e[0]<2&&e[1]<9||1===e[0]&&9===e[1]&&e[2]<1||e[0]>=4)throw new Error("Bootstrap's JavaScript requires at least jQuery v1.9.1 but less than v4.0.0")}(e),t.Util=P,t.Alert=L,t.Button=R,t.Carousel=j,t.Collapse=H,t.Dropdown=W,t.Modal=M,t.Popover=x,t.Scrollspy=K,t.Tab=V,t.Tooltip=U,Object.defineProperty(t,"__esModule",{value:!0})});
-//# sourceMappingURL=bootstrap.min.js.map
\ No newline at end of file
diff --git a/chall/src/js/rockstar.js b/chall/src/js/rockstar.js
deleted file mode 100644
index ab22942..0000000
--- a/chall/src/js/rockstar.js
+++ /dev/null
@@ -1,13 +0,0 @@
-function transpile() {
-
-    var data = {"code": document.getElementById("in").value};
-    console.log(data);
-
-$.post({
-    url: "transpile.php",
-    data: JSON.stringify(data)
-  }).done(function( data ) {
-    var json_data = JSON.parse(data)
-    document.getElementById("output").value = json_data["result"];
-  });
-}
\ No newline at end of file
diff --git a/chall/src/transpile.php b/chall/src/transpile.php
deleted file mode 100644
index 44de755..0000000
--- a/chall/src/transpile.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-
-$input = json_decode(file_get_contents('php://input'), true);
-if (!isset($input["code"])) {
-    echo json_encode(array("error" => "no input data"));
-    die();
-}
-
-$tmpfname = tempnam("/tmp", "lolpython_prog_");
-$handle = fopen($tmpfname, "w");
-fwrite($handle, $input["code"]);
-fclose($handle);
-
-$stdout = shell_exec("python2 /opt/lolcode.py $tmpfname");
-
-echo(json_encode(array("result" => $stdout)));
-?>
\ No newline at end of file
-- 
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