X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=compiler%2FdeSugar%2FDsMonad.lhs;h=7af07557ed403d834882ee543b77d1b5db2434ab;hb=16dc208aaad7aadaea970e47b8055d7d7f8781e5;hp=577a0d822ddf15497ec2801bc269af572c97fb43;hpb=367b0590cc0d8ba3d1561c85b366a183b8a71d24;p=ghc-hetmet.git

diff --git a/compiler/deSugar/DsMonad.lhs b/compiler/deSugar/DsMonad.lhs
index 577a0d8..7af0755 100644
--- a/compiler/deSugar/DsMonad.lhs
+++ b/compiler/deSugar/DsMonad.lhs
@@ -6,6 +6,13 @@
 @DsMonad@: monadery used in desugaring
 
 \begin{code}
+{-# 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/Commentary/CodingStyle#Warnings
+-- for details
+
 module DsMonad (
 	DsM, mappM, mapAndUnzipM,
 	initDs, initDsTc, returnDs, thenDs, listDs, fixDs, mapAndUnzipDs, 
@@ -20,6 +27,7 @@ module DsMonad (
 	UniqSupply, newUniqueSupply,
 	getDOptsDs, getGhcModeDs, doptDs,
 	dsLookupGlobal, dsLookupGlobalId, dsLookupTyCon, dsLookupDataCon,
+        dsLookupClass,
 
 	DsMetaEnv, DsMetaVal(..), dsLookupMetaEnv, dsExtendMetaEnv,
 
@@ -43,6 +51,7 @@ import HscTypes
 import Bag
 import DataCon
 import TyCon
+import Class
 import Id
 import Module
 import Var
@@ -55,8 +64,6 @@ import NameEnv
 import OccName
 import DynFlags
 import ErrUtils
-import Bag
-import OccName
 
 import Data.IORef
 
@@ -316,6 +323,11 @@ dsLookupDataCon :: Name -> DsM DataCon
 dsLookupDataCon name
   = dsLookupGlobal name		`thenDs` \ thing ->
     returnDs (tyThingDataCon thing)
+
+dsLookupClass :: Name -> DsM Class
+dsLookupClass name
+  = dsLookupGlobal name         `thenDs` \ thing ->
+    returnDs (tyThingClass thing)
 \end{code}
 
 \begin{code}