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PLY grammar visualization tool

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Guillaume Huysmans 3e26166e2d Added FP to the README		2016-06-17 03:59:52 +02:00
.gitignore	Initial commit	2016-05-16 17:14:14 +02:00
autogramm.py	Handled epsilon correctly	2016-05-18 18:49:05 +02:00
fp.dot	Added FP to the README	2016-06-17 03:59:52 +02:00
fp.png	Added FP to the README	2016-06-17 03:59:52 +02:00
fp.py	Fixed an error in fp's grammar: int f()* is BAD!	2016-06-17 03:50:54 +02:00
lexer.py	Improved both the parser and the lexer	2016-06-12 02:01:25 +02:00
LICENSE	Initial commit	2016-05-16 17:14:14 +02:00
parser.py	Improved both the parser and the lexer	2016-06-12 02:01:25 +02:00
README.md	Added FP to the README	2016-06-17 03:59:52 +02:00
sml.dot	Added a README	2016-06-08 14:10:06 +02:00
sml.png	Added a README	2016-06-08 14:10:06 +02:00
sml.py	Added a simplified XML parser	2016-05-18 15:53:12 +02:00

README.md

autogramm, a PLY grammar visualization tool

Sometimes you need to understand the context of a particular grammar rule. This could be tedious when the grammar is a bit complex or not as you would've written it.

autogram generates a DOT (GraphViz) script you can fairly easily customize to produce some nice PostScript output.

Examples

Simplified XML parser

autogramm.py sml.py|dot -Tps >sml.ps

yields

Simplified C function definition parser

autogramm.py fp.py|dot -Tps >fp.ps

yields

Usage

autogramm.py [--back] [--unused] script

positional arguments:
  script      input file

optional arguments:
  --back      show backreferences
  --unused    show unused rules