pumpkingod at gmail.com
Sat Apr 23 20:54:42 CEST 2011
I don't have an answer for you, but you might want to look at what :k does
in ghci, since that needs to parse a type.
On Sat, Apr 23, 2011 at 2:06 PM, Ranjit Jhala <jhala at cs.ucsd.edu> wrote:
> Hi all,
> can someone give me a hint as to the best way to parse a type from a
> Ideally, I'd like a function
> stringType :: String -> Maybe Type
> or possibly,
> stringType :: (GhcMonad m) => String -> m (Maybe Type)
> such that,
> stringType s == Just t
> if in the current GHC context the string s is the name of the type t. For
> example, I'd like:
> stringType "Int"
> to return a value equal to intTy (from TysWiredIn). My investigations have
> led me to
> parseType :: P (LHsType RdrName)
> and I suspect that with some work (mainly creating an appropriate PState,
> and mapping the name back, I can extract what I want, but I was wondering
> if there is some simpler route that I've overlooked.
> Glasgow-haskell-users mailing list
> Glasgow-haskell-users at haskell.org
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