1 files changed, 0 insertions, 152 deletions
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()