Re: [Haskell-cafe] Parsec question

Andrew Coppin writes:

I have a parser that recognises single-line comments, and another that recognises multi-line comments. What I'd like to do is make a big parser that returns [Either String String], which all the comments in one side and all the rest in the other side. But I can't figure out how to construct such a parser... Any hints?

wholething = many comment comment = do fmap Left $ (linecomment `onFail` nestedcomment) `onFail` fmap Right $ noncomment