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{-# LANGUAGE DeriveDataTypeable #-}
-- See Trac #1033
module Pointful' where
import Data.Generics
import Control.Monad.State
data HsExp = HsWildCard deriving( Typeable, Data )
data HsName = HsName deriving( Typeable, Data )
-- rename :: () -> HsExp -> State (HsName, [HsName]) HsExp
-- Type sig commented out
rename1 = \_ -> everywhereM (mkM (\e -> case e of HsWildCard -> return e))
rename2 _ = everywhereM (mkM (\e -> case e of HsWildCard -> return e))
uncomb1 :: State (HsName, [HsName]) HsExp
uncomb1 = rename1 () undefined
uncomb2 :: State (HsName, [HsName]) HsExp
uncomb2 = rename2 () undefined
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