Fixed uninitialised FunBind fun_tick field

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

diff --git a/compiler/types/TypeRep.lhs b/compiler/types/TypeRep.lhs
index 9110d68..111d194 100644 (file)
--- a/compiler/types/TypeRep.lhs
+++ b/compiler/types/TypeRep.lhs
@@ -1,4 +1,5 @@
 %
+% (c) The University of Glasgow 2006
 % (c) The GRASP/AQUA Project, Glasgow University, 1998
 %
 \section[TypeRep]{Type - friends' interface}
@@ -14,14 +15,14 @@ module TypeRep (
        funTyCon,
 
        -- Pretty-printing
-       pprType, pprParendType, pprTyThingCategory,
-       pprPred, pprTheta, pprThetaArrow, pprClassPred,
+       pprType, pprParendType, pprTyThingCategory, 
+       pprPred, pprTheta, pprForAll, pprThetaArrow, pprClassPred,
 
        -- Kinds
        liftedTypeKind, unliftedTypeKind, openTypeKind,
         argTypeKind, ubxTupleKind,
        isLiftedTypeKindCon, isLiftedTypeKind,
-       mkArrowKind, mkArrowKinds,
+       mkArrowKind, mkArrowKinds, isCoercionKind,
 
         -- Kind constructors...
         liftedTypeKindTyCon, openTypeKindTyCon, unliftedTypeKindTyCon,
@@ -43,24 +44,18 @@ module TypeRep (
 #include "HsVersions.h"
 
 import {-# SOURCE #-} DataCon( DataCon, dataConName )
--- friends:
 
-import Var       ( Var, Id, TyVar, tyVarKind )
-import VarSet     ( TyVarSet )
-import Name      ( Name, NamedThing(..), BuiltInSyntax(..), mkWiredInName )
-import OccName   ( mkOccNameFS, tcName, parenSymOcc )
-import BasicTypes ( IPName, tupleParens )
-import TyCon     ( TyCon, mkFunTyCon, tyConArity, tupleTyConBoxity, isTupleTyCon, 
-                   isRecursiveTyCon, isNewTyCon, mkVoidPrimTyCon, 
-                   mkSuperKindTyCon )
-import Class     ( Class )
+-- friends:
+import Var
+import VarSet
+import Name
+import OccName
+import BasicTypes
+import TyCon
+import Class
 
 -- others
-import PrelNames  ( gHC_PRIM, funTyConKey, tySuperKindTyConKey, 
-                    coSuperKindTyConKey, liftedTypeKindTyConKey,
-                    openTypeKindTyConKey, unliftedTypeKindTyConKey,
-                    ubxTupleKindTyConKey, argTypeKindTyConKey, listTyConKey, 
-                    parrTyConKey, hasKey )
+import PrelNames
 import Outputable
 \end{code}
 
@@ -391,14 +386,21 @@ isCoSuperKind (TyConApp kc []) = kc `hasKey` coSuperKindTyConKey
 isCoSuperKind other            = False
 
 -------------------
--- lastly we need a few functions on Kinds
+-- Lastly we need a few functions on Kinds
 
 isLiftedTypeKindCon tc    = tc `hasKey` liftedTypeKindTyConKey
 
+isLiftedTypeKind :: Kind -> Bool
 isLiftedTypeKind (TyConApp tc []) = isLiftedTypeKindCon tc
 isLiftedTypeKind other            = False
 
-
+isCoercionKind :: Kind -> Bool
+-- All coercions are of form (ty1 :=: ty2)
+-- This function is here rather than in Coercion, 
+-- because it's used in a knot-tied way to enforce invariants in Var
+isCoercionKind (NoteTy _ k)         = isCoercionKind k
+isCoercionKind (PredTy (EqPred {})) = True
+isCoercionKind other               = False
 \end{code}
 
 
@@ -466,7 +468,7 @@ pprParendKind = pprParendType
 
 ppr_type :: Prec -> Type -> SDoc
 ppr_type p (TyVarTy tv)       = ppr tv
-ppr_type p (PredTy pred)      = braces (ppr pred)
+ppr_type p (PredTy pred)      = ifPprDebug (ptext SLIT("<pred>")) <> (ppr pred)
 ppr_type p (NoteTy other ty2) = ppr_type p ty2
 ppr_type p (TyConApp tc tys)  = ppr_tc_app p tc tys