[Haskell-cafe] Parsec - collecting patches - How to contact
maintainer Daan Leijen ?
mux at FreeBSD.org
Thu Jul 5 05:32:57 EDT 2007
Marc Weber wrote:
> Paresc is a great piece of software. But there are some things which
> do bother me occasionally.
> A short list:
> Things I'd like to change:
> a) custom location tracking. (I've already written a patch, but I
> haven't tested how much speed will suffer? Which would be a nice test?)
> b) Add a function returning a monadic result
> (thus either (fail . show) return each time .. )
> because I feel like doing this all the time.
> c) make some functions more generic
> module Text.ParserCombinators.Parsec.Char
> (these functions should work with any token type):
> anyChar -> anyToken
> char -> expectToken
> string -> expectTokens
> d) export some simple functions such as nat decimal etc..
> Sometimes all I just want to get an integer without importing
> Tokens and specifying a language..
> shapr / sorear suggested asking SPJ to contact Daan Leijen.
> Perhaps there are different approaches to address the issues above?
> Do you also have some patches / suggestions ?
I submitted a patch some time ago that makes the GenParser monad
of Parsec be an instance of MonadState, so that the user state can
be manipulated using the usual get/put/modify functions. The problem
with this is that it adds a dependency on mtl, and thus on MPTCs
and FDs if I remember correctly.
You can find it there:
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