Complete the evidence generation for GADTs

[ghc-hetmet.git] / compiler / deSugar / DsBinds.lhs

diff --git a/compiler/deSugar/DsBinds.lhs b/compiler/deSugar/DsBinds.lhs
index de8e981..58e42fd 100644 (file)
--- a/compiler/deSugar/DsBinds.lhs
+++ b/compiler/deSugar/DsBinds.lhs
@@ -424,14 +424,14 @@ dsCoercion CoHole              thing_inside = thing_inside
 dsCoercion (CoCompose c1 c2) thing_inside = dsCoercion c1 (dsCoercion c2 thing_inside)
 dsCoercion (ExprCoFn co)     thing_inside = do { expr <- thing_inside
                                               ; return (Cast expr co) }
-dsCoercion (CoLams ids)      thing_inside = do { expr <- thing_inside
-                                              ; return (mkLams ids expr) }
-dsCoercion (CoTyLams tvs)    thing_inside = do { expr <- thing_inside
-                                              ; return (mkLams tvs expr) }
-dsCoercion (CoApps ids)      thing_inside = do { expr <- thing_inside
-                                              ; return (mkVarApps expr ids) }
-dsCoercion (CoTyApps tys)    thing_inside = do { expr <- thing_inside
-                                              ; return (mkTyApps expr tys) }
+dsCoercion (CoLam id)        thing_inside = do { expr <- thing_inside
+                                              ; return (Lam id expr) }
+dsCoercion (CoTyLam tv)      thing_inside = do { expr <- thing_inside
+                                              ; return (Lam tv expr) }
+dsCoercion (CoApp id)        thing_inside = do { expr <- thing_inside
+                                              ; return (App expr (Var id)) }
+dsCoercion (CoTyApp ty)      thing_inside = do { expr <- thing_inside
+                                              ; return (App expr (Type ty)) }
 dsCoercion (CoLet bs)        thing_inside = do { prs <- dsLHsBinds bs
                                               ; expr <- thing_inside
                                               ; return (Let (Rec prs) expr) }