[Haskell-cafe] ghc api printing of types
dgorin at dc.uba.ar
Sun Jul 4 09:49:09 EDT 2010
I believe the way is done in hint is something like this (untested):
showType t =
do -- Unqualify necessary types
-- (i.e., do not expose internals)
unqual <- GHC.getPrintUnqual
return $ GHC.showSDocForUser unqual (GHC.pprTypeForUser False
t) -- False means 'drop explicit foralls'
Hope that helps
On Jul 4, 2010, at 8:36 AM, Phyx wrote:
> I was wondering how given a Type I can get a pretty printed type out
> of it.
> I’m currently using showSDocUnqual . pprType . snd . tidyOpenType
> But this has the problem that predicates don’t get printed, anyone
> know how GHCi does this?
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