add support for <{..}> and ~~> syntax as well as typing for Kappa-calculus

[ghc-hetmet.git] / compiler / types / TypeRep.lhs

diff --git a/compiler/types/TypeRep.lhs b/compiler/types/TypeRep.lhs
index 4f0e9d8..ec20914 100644 (file)
--- a/compiler/types/TypeRep.lhs
+++ b/compiler/types/TypeRep.lhs
@@ -652,6 +652,9 @@ pprTcApp p pp tc tys
   | isTupleTyCon tc && tyConArity tc == length tys
   = tupleParens (tupleTyConBoxity tc) (sep (punctuate comma (map (pp TopPrec) tys)))
 
+  | tc `hasKey` hetMetKappaTyConKey, [ty1,ty2] <- tys
+  = pp TopPrec ty1 <> ptext (sLit "~~>") <> pp TopPrec ty2
+
   | tc `hasKey` hetMetCodeTypeTyConKey, [ty1,ty2] <- tys
   = ptext (sLit "<[") <> pp TopPrec ty2 <> ptext (sLit "]>@") <> pp TopPrec ty1