[Haskell-cafe] Parsing of bytestrings with non-String errors?
malcolm.wallace at cs.york.ac.uk
Sun Feb 21 09:21:56 EST 2010
> Is there a parser combinator library out there that works on
> bytestrings and
> allows using a custom error type?
The HuttonMeijerWallace combinators (distributed with polyparse) have
the custom error type, but not the bytestrings.
> Or maybe there's some very basic reason why String is so commonly
I don't think there is any deep reason. Strings are convenient, that
My guesstimate would be that if you take (e.g.) the polyparse
combinators, and manually rewrite String everywhere to a parameter e,
(only when it represents an error of course), it would take you maybe
an hour in total, including fixing up any site you missed that the
typechecker catches for you.
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