https://github.com/masonm/grammargrapher

https://github.com/masonm/grammargrapher

Last synced: 9 days ago
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• Host: GitHub
• URL: https://github.com/masonm/grammargrapher
• Owner: MasonM
• License: mit
• Created: 2012-05-22T03:17:09.000Z (about 14 years ago)
• Default Branch: master
• Last Pushed: 2012-05-22T03:21:17.000Z (about 14 years ago)
• Last Synced: 2026-07-26T15:00:14.016Z (13 days ago)
• Language: Python
• Size: 109 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README
  • License: LICENSE

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README

          
=======

Summary

=======

GrammarGrapher is a basic script to display parse trees for user-provided input 

using a GLR parsing algorithm. See examples/ directory for examples of usage. 

Licensed under the MIT License

============

Dependencies

============

- Python 2.5-2.6

- PyGgy 0.4.1 (http://www.lava.net/~newsham/pyggy/pyggy-0.4.1.tar.gz)

- pydot 1.0.2 (http://pydot.googlecode.com/files/pydot-1.0.2.tar.gz)

- ImageMagick 7.0+

=====

Usage

=====

grapher.py [options]  

Where  is a .pyg file containing a CFG grammar,  is a .pyl containing

the lexical specifications, and [options] is taken from the following list:

  -p      Override default prefix for dot files with given file.

  -a     If set, write an animated GIF showing the construction of the parse tree

                from top to bottom, with  ms delay between each frame.

  -o   Write to given file. Extension determines format. If not specified, dot file 

                will be printed to stdout.

  -i  String to parse. If not provided, input will be taken from STDIN.

  -h, --help    Print this message