X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcClassDcl.lhs;h=87c18414ea3abc400c29e68c13d0be6b2d49c845;hb=36f77deda25312534200f10ccdb18528b6ee6e27;hp=92c7958d26c6fd975ce651b65469f9bf1377e82c;hpb=f4510d27c5883fe7e8570f4dd49d45a8b0122f2c;p=ghc-hetmet.git

diff --git a/compiler/typecheck/TcClassDcl.lhs b/compiler/typecheck/TcClassDcl.lhs
index 92c7958..87c1841 100644
--- a/compiler/typecheck/TcClassDcl.lhs
+++ b/compiler/typecheck/TcClassDcl.lhs
@@ -727,15 +727,15 @@ mkGenericInstance clas (hs_ty, binds)
 tcAddDeclCtxt decl thing_inside
   = addErrCtxt ctxt thing_inside
   where
-     thing = case decl of
-	   	ClassDecl {}		  -> "class"
-		TySynonym {}		  -> "type synonym"
-		TyFunction {}		  -> "type function signature"
-		TyData {tcdND = NewType}  -> "newtype" ++ maybeSig
-		TyData {tcdND = DataType} -> "data type" ++ maybeSig
+     thing | isClassDecl decl  = "class"
+	   | isTypeDecl decl   = "type synonym" ++ maybeInst
+	   | isDataDecl decl   = if tcdND decl == NewType 
+				 then "newtype" ++ maybeInst
+				 else "data type" ++ maybeInst
+	   | isFamilyDecl decl = "family"
 
-     maybeSig | isKindSigDecl decl = " signature"
-	      | otherwise	   = ""
+     maybeInst | isFamInstDecl decl = " family"
+	       | otherwise          = ""
 
      ctxt = hsep [ptext SLIT("In the"), text thing, 
 		  ptext SLIT("declaration for"), quotes (ppr (tcdName decl))]
@@ -767,7 +767,7 @@ badGenericInstance sel_id because
 notSimple inst_tys
   = vcat [ptext SLIT("because the instance type(s)"), 
 	  nest 2 (ppr inst_tys),
-	  ptext SLIT("is not a simple type of form (T a b c)")]
+	  ptext SLIT("is not a simple type of form (T a1 ... an)")]
 
 notGeneric tycon
   = vcat [ptext SLIT("because the instance type constructor") <+> quotes (ppr tycon) <+>