On Tue, Feb 07, 2012 at 10:05:53PM -0600, Jelle Herold wrote:
> On 02/07/2012 02:36 PM, andrew cooke wrote:
> >ok, i don't know for sure, but just looking at that raises the following huge
> >red flag:
> >[...]

> So just for the record, should anyone be wondering, here is a parser
> that deals with nested comments, including empty ones, and dropping
> the delimiters.

> Cheers!

> #! /usr/bin/env python

> from lepl import *

> class Comment(Node): pass

> start = Literal('(*')
> end = Literal('*)')

> # a word is any number of symbols not '(*' or '*)'
> word = (~Lookahead(start|end) & Any())[1:,...]

> nested_comment = Delayed()
> contents = (nested_comment | word)[1:]
> comment = ~start & (contents|Empty()) & ~end > Comment
> nested_comment += comment

> parser = nested_comment[1:].get_parse()

> print parser("(*bar(*foo(*toz*)meh*)*)")[0]

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