X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=compiler%2Futils%2FIOEnv.hs;h=d01588f47b6b36f5728dd4451b1d3dba76af5acb;hb=ad94d40948668032189ad22a0ad741ac1f645f50;hp=8116effb331ea2b2c1590ef176d634ccbc34d1aa;hpb=b00b5bc04ff36a551552470060064f0b7d84ca30;p=ghc-hetmet.git

diff --git a/compiler/utils/IOEnv.hs b/compiler/utils/IOEnv.hs
index 8116eff..d01588f 100644
--- a/compiler/utils/IOEnv.hs
+++ b/compiler/utils/IOEnv.hs
@@ -1,8 +1,16 @@
--- (c) The University of Glasgow 2002
+--
+-- (c) The University of Glasgow 2002-2006
 --
 -- The IO Monad with an environment
 --
 
+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+--     http://hackage.haskell.org/trac/ghc/wiki/CodingStyle#Warnings
+-- for details
+
 module IOEnv (
 	IOEnv,	-- Instance of Monad
 
@@ -26,9 +34,10 @@ module IOEnv (
 #include "HsVersions.h"
 
 import Panic		( try, tryUser, tryMost, Exception(..) )
-import DATA_IOREF	( IORef, newIORef, readIORef, writeIORef )
-import UNSAFE_IO	( unsafeInterleaveIO )
-import FIX_IO		( fixIO )
+
+import Data.IORef	( IORef, newIORef, readIORef, writeIORef )
+import System.IO.Unsafe	( unsafeInterleaveIO )
+import System.IO	( fixIO )
 
 
 ----------------------------------------------------------------------
@@ -45,6 +54,9 @@ instance Monad (IOEnv m) where
   return = returnM
   fail s = failM	-- Ignore the string
 
+instance Functor (IOEnv m) where
+  fmap f (IOEnv m) = IOEnv (\ env -> fmap f (m env))
+
 returnM :: a -> IOEnv env a
 returnM a = IOEnv (\ env -> return a)