Properly ppr InstEqs in wanteds of implication constraints

[ghc-hetmet.git] / compiler / hsSyn / HsUtils.lhs

diff --git a/compiler/hsSyn/HsUtils.lhs b/compiler/hsSyn/HsUtils.lhs
index e9d80c0..3eaae63 100644 (file)
--- a/compiler/hsSyn/HsUtils.lhs
+++ b/compiler/hsSyn/HsUtils.lhs
@@ -88,12 +88,16 @@ mkLHsWrap co_fn (L loc e) = L loc (mkHsWrap co_fn e)
 
 mkHsWrap :: HsWrapper -> HsExpr id -> HsExpr id
 mkHsWrap co_fn e | isIdHsWrapper co_fn = e
-                | otherwise          = HsWrap co_fn e
+                | otherwise           = HsWrap co_fn e
 
 mkHsWrapCoI :: CoercionI -> HsExpr id -> HsExpr id
 mkHsWrapCoI IdCo     e = e
 mkHsWrapCoI (ACo co) e = mkHsWrap (WpCo co) e
 
+coiToHsWrapper :: CoercionI -> HsWrapper
+coiToHsWrapper IdCo     = idHsWrapper
+coiToHsWrapper (ACo co) = WpCo co
+
 mkHsLam :: [LPat id] -> LHsExpr id -> LHsExpr id
 mkHsLam pats body = mkHsPar (L (getLoc body) (HsLam matches))
        where
@@ -244,20 +248,20 @@ mkFunBind fn ms = FunBind { fun_id = fn, fun_infix = False, fun_matches = mkMatc
                            fun_tick = Nothing }
 
 
-mkVarBind :: SrcSpan -> RdrName -> LHsExpr RdrName -> LHsBind RdrName
+mkVarBind :: SrcSpan -> id -> LHsExpr id -> LHsBind id
 mkVarBind loc var rhs = mk_easy_FunBind loc var [] rhs
 
 ------------
-mk_easy_FunBind :: SrcSpan -> RdrName -> [LPat RdrName]
-               -> LHsExpr RdrName -> LHsBind RdrName
+mk_easy_FunBind :: SrcSpan -> id -> [LPat id]
+               -> LHsExpr id -> LHsBind id
 
 mk_easy_FunBind loc fun pats expr
   = L loc $ mkFunBind (L loc fun) [mkMatch pats expr emptyLocalBinds]
 
 ------------
-mk_FunBind :: SrcSpan -> RdrName
-          -> [([LPat RdrName], LHsExpr RdrName)]
-          -> LHsBind RdrName
+mk_FunBind :: SrcSpan -> id
+          -> [([LPat id], LHsExpr id)]
+          -> LHsBind id
 
 mk_FunBind loc fun [] = panic "TcGenDeriv:mk_FunBind"
 mk_FunBind loc fun pats_and_exprs