cscg24-lolpython

CSCG 2024 Challenge 'Can I Haz Lolpython?'
git clone https://git.sinitax.com/sinitax/cscg24-lolpython
Log | Files | Refs | sfeed.txt

yply.py (1237B)

      1#!/usr/local/bin/python
      2# yply.py
      3#
      4# Author: David Beazley (dave@dabeaz.com)
      5# Date  : October 2, 2006
      6#
      7# Converts a UNIX-yacc specification file into a PLY-compatible
      8# specification.   To use, simply do this:
      9#
     10#   % python yply.py [-nocode] inputfile.y >myparser.py
     11#
     12# The output of this program is Python code. In the output,
     13# any C code in the original file is included, but is commented.
     14# If you use the -nocode option, then all of the C code in the
     15# original file is discarded.
     16#
     17# Disclaimer:  This just an example I threw together in an afternoon.
     18# It might have some bugs.  However, it worked when I tried it on
     19# a yacc-specified C++ parser containing 442 rules and 855 parsing
     20# states.
     21#
     22
     23import sys
     24sys.path.insert(0,"../..")
     25
     26import ylex
     27import yparse
     28
     29from ply import *
     30
     31if len(sys.argv) == 1:
     32    print "usage : yply.py [-nocode] inputfile"
     33    raise SystemExit
     34
     35if len(sys.argv) == 3:
     36    if sys.argv[1] == '-nocode':
     37         yparse.emit_code = 0
     38    else:
     39         print "Unknown option '%s'" % sys.argv[1]
     40         raise SystemExit
     41    filename = sys.argv[2]
     42else:
     43    filename = sys.argv[1]
     44
     45yacc.parse(open(filename).read())
     46
     47print """
     48if __name__ == '__main__':
     49    from ply import *
     50    yacc.yacc()
     51"""
     52
     53