[project @ 1998-04-06 18:35:24 by sof]

new function: isForAllTy

diff --git a/ghc/compiler/types/Type.lhs b/ghc/compiler/types/Type.lhs
index 6973687..3273b60 100644 (file)
--- a/ghc/compiler/types/Type.lhs
+++ b/ghc/compiler/types/Type.lhs
@@ -15,7 +15,7 @@ module Type (
        mkSynTy, isSynTy,
 
        mkForAllTy, mkForAllTys, splitForAllTy_maybe, splitForAllTys, 
-       applyTy, applyTys,
+       applyTy, applyTys, isForAllTy,
 
        TauType, RhoType, SigmaType, ThetaType,
        isTauTy,
@@ -333,6 +333,11 @@ splitForAllTy_maybe (SynTy _ ty)        = splitForAllTy_maybe ty
 splitForAllTy_maybe (ForAllTy tyvar ty) = Just(tyvar, ty)
 splitForAllTy_maybe _                  = Nothing
 
+isForAllTy :: GenType flexi -> Bool
+isForAllTy (SynTy _ ty)        = isForAllTy ty
+isForAllTy (ForAllTy tyvar ty) = True
+isForAllTy _                = False
+
 splitForAllTys :: GenType flexi -> ([GenTyVar flexi], GenType flexi)
 splitForAllTys ty = split ty ty []
    where