Using Haskell's Parsec to parse a ByteString

I've managed to use Parsec to parse a String, but cannot manage to do the same with a ByteString.

How can I make Parsec work with ByteStrings without manually converting them to Strings?

I get the feeling this isn't hard to开发者_如何学Go accomplish. Am I wrong? (I'm new to Haskell. ^^)

Thanks!

Just import the Parser type from Text.Parsec.ByteString or Text.Parsec.ByteString.Lazy, instead of from Text.Parsec.String.

the answer actually depends on the version of Parsec you are using. If you are using version 3.0 or later then yes. For version 2.x.x I don't think you can.

http://hackage.haskell.org/packages/archive/parsec/3.0.1/doc/html/Text-Parsec-ByteString.html

Cheers

edit: The Parsec that STH suggest (Text.Parsec.ByteString) is actually version 3.0 the previous version 2.x.x is located in Text.ParserCombinators.Parsec.

import Text.Parsec.ByteString ()

will give you the instance

forall m. Stream ByteString m Char

hence if you use, instead of Parser a:

p ::  Stream s m Char => ParsecT s u m a