On Wed, Dec 24, 2008 at 9:22 AM, Erik de Castro Lopo <mle...@mega-nerd.com> wrote: > > My next problem is matching things like: > > identifier ('.' identifier)* ('.' '*')? > > I've had a look at lookAhead from Text.ParserCombinators.Parsec.Combinator > but I can't get it to work.
* is analogous to the 'many' combinator, and ? can be implemented with the 'option' combinator. Parsec is all about composing bigger parsers out of smaller ones using combinators like these. One of the tricks I found early on is to understand where to use 'try' (since by default input is consumed even if a parser fails) but apart from that just read Daan's page, even though it's out of date, and look at how all these cool combinators work. http://legacy.cs.uu.nl/daan/download/parsec/parsec.html _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe