On 9 May 2010 08:45, Paul R
http://www.haskell.org/haskellwiki/Parsec
in particular :
- link 1 points to the parsec site, with an almost 10 years old documentation, for a previous major release - link 3 is broken
The rest of the page is a bit terse as well. I'm really wondering what one should start reading to learn how to parse a stream in haskell.
Hi Paul The 10 year old documentation is very good though - for my taste, Parsec 2.0 is the best documented Haskell lib I've seen. If you want to parse a stream, you don't want Parsec as produces as it isn't an online parser - online meaning 'streaming' i.e. it can produce some results during the 'work' rather than a single result at the end. From the descriptions on Hackage, Parsimony and uu-parsinglib sound like better candidates; similarly one of the Polyparse modules provides an online parser. If you want to learn how to write a streaming parser, pick one of those - start work and post back to this list if/when you have problems. Remember that a non-streaming parser is simpler than a streaming one: you might want to write a version that works on short input first and your result type has to support streaming (probably best if it is a list). Also for any parser, but especially an online one you'll have to be careful to use backtracking sparingly. Best wishes Stephen