parsing escaped characters

[Dan S]

Hi - first steps with this module, and I'm trying to work out how to parse doublequoted strings, where a doublequote can be included if escaped with a backslash.
"This is an \"example\" of something that should parse OK"

The module has NOT_FOLLOWED_BY, but it seems like NOT_PRECEDED_BY would be good for this case...? Trying to think of a neat way to express this in modgrammar. So far all I have is:

class StringLiteral(Grammar):
    # TODO: escaped double-quotes would break this.
    grammar = ('"', OPTIONAL(WORD('^"')), '"')

[Dan S]

Found one way:

grammar = ('"', ZERO_OR_MORE(WORD('^"') | WORD('^\\', '"', count=2)), '"')

[iris...@gmail.com]

There is a QuotedString class in the extras module that may do what you would like.