Does this Template Haskell template work for you?
> {-# LANGUAGE TemplateHaskell #-}
>
> module TestTH where
>
> import Language.Haskell.TH.Ppr
> import Language.Haskell.TH
>
> $( do expr <- [| \x -> case x of True -> not; False -> id |]
> runIO $ putStrLn $ pprint expr
> return [] )
Richard
On Nov 11, 2015, at 6:14 AM, Jan Stolarek <[email protected]> wrote:
> Devs,
>
> Module Language.Haskell.TH.Ppr defines Ppr instances for Template Haskell
> data types. What is the
> fastest way of testing these instances, ie. pretty-printing TH data types? I
> want to make sure
> that the instances I added print the data type in the way that I expect.
>
> Janek
>
> ---
> Politechnika Łódzka
> Lodz University of Technology
>
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