X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Ftypes%2FClass.lhs;h=5e8a4d4bddd7c7a6f7a13fff43622349b04fa0d1;hp=e7bda631767b775503e30d9de093a16715df8650;hb=f278f0676579f67075033a4f9857715909c4b71e;hpb=ef6e8211dee59eb7fa80a242391b89b52bd57f80

diff --git a/compiler/types/Class.lhs b/compiler/types/Class.lhs
index e7bda63..5e8a4d4 100644
--- a/compiler/types/Class.lhs
+++ b/compiler/types/Class.lhs
@@ -17,6 +17,8 @@ module Class (
 	classBigSig, classExtraBigSig, classTvsFds, classSCTheta
     ) where
 
+#include "Typeable.h"
+
 import {-# SOURCE #-} TyCon	( TyCon )
 import {-# SOURCE #-} TypeRep	( PredType )
 
@@ -24,8 +26,11 @@ import Var
 import Name
 import BasicTypes
 import Unique
+import Util
 import Outputable
 import FastString
+
+import qualified Data.Data as Data
 \end{code}
 
 %************************************************************************
@@ -178,5 +183,14 @@ pprFundeps fds = hsep (ptext (sLit "|") : punctuate comma (map pprFunDep fds))
 
 pprFunDep :: Outputable a => FunDep a -> SDoc
 pprFunDep (us, vs) = hsep [interppSP us, ptext (sLit "->"), interppSP vs]
+
+instance Data.Typeable Class where
+    typeOf _ = Data.mkTyConApp (Data.mkTyCon "Class") []
+
+instance Data.Data Class where
+    -- don't traverse?
+    toConstr _   = abstractConstr "Class"
+    gunfold _ _  = error "gunfold"
+    dataTypeOf _ = mkNoRepType "Class"
 \end{code}