[antlr-interest] parsing python

[Terence Parr]

Well, I've embarked on my parser for python.  First task was to 
autoconvert the distribution grammar to ANTLR format.  Then I jumped on 
the lexical issues.  Eewwwwwwwwwww!  Should never watch sausage being 
made or python being lexically analyzed.  I think Humans can get pretty 
used to this weird indentation thing as it's nice visually.  Getting 
the lexer to handle the weird structure and the fun exceptions to the 
rules, is no picnic.

Anyway, I have something that looks like a parser with a 
PythonTokenStream that does the right INDENT/DEDENT imaginary token 
generation, but I have to add in a few random "allow trailing commas 
for no reason" (COMMA)? subrules.  Then I will attempt a symbol table 
manager so I can learn the semantics of symbol table lookup.

I'll post something when it's ready for public consumption. :)

Nice language, python....just a little kinky lexically. ;)

Ter
--
Professor Comp. Sci., University of San Francisco
Creator, ANTLR Parser Generator, http://www.antlr.org
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