diff options
Diffstat (limited to 'ghc/GHCi')
| -rw-r--r-- | ghc/GHCi/UI/Monad.hs | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/ghc/GHCi/UI/Monad.hs b/ghc/GHCi/UI/Monad.hs index 6ecb079ea0..4491d24a52 100644 --- a/ghc/GHCi/UI/Monad.hs +++ b/ghc/GHCi/UI/Monad.hs @@ -1,4 +1,4 @@ -{-# LANGUAGE CPP, FlexibleInstances #-} +{-# LANGUAGE CPP, FlexibleInstances, DeriveFunctor #-} {-# OPTIONS_GHC -fno-cse -fno-warn-orphans #-} -- -fno-cse is needed for GLOBAL_VAR's to behave properly @@ -255,6 +255,7 @@ recordBreak brkLoc = do return (False, oldCounter) newtype GHCi a = GHCi { unGHCi :: IORef GHCiState -> Ghc a } + deriving (Functor) reflectGHCi :: (Session, IORef GHCiState) -> GHCi a -> IO a reflectGHCi (s, gs) m = unGhc (unGHCi m gs) s @@ -262,9 +263,6 @@ reflectGHCi (s, gs) m = unGhc (unGHCi m gs) s startGHCi :: GHCi a -> GHCiState -> Ghc a startGHCi g state = do ref <- liftIO $ newIORef state; unGHCi g ref -instance Functor GHCi where - fmap = liftM - instance Applicative GHCi where pure a = GHCi $ \_ -> pure a (<*>) = ap |