tcSplitForAllTys, tcSplitPhiTy,
tcSplitFunTy_maybe, tcSplitFunTys, tcFunArgTy, tcFunResultTy, tcSplitFunTysN,
tcSplitTyConApp, tcSplitTyConApp_maybe, tcTyConAppTyCon, tcTyConAppArgs,
- tcSplitAppTy_maybe, tcSplitAppTy, tcSplitAppTys,
+ tcSplitAppTy_maybe, tcSplitAppTy, tcSplitAppTys, repSplitAppTy_maybe,
tcValidInstHeadTy, tcGetTyVar_maybe, tcGetTyVar,
tcSplitSigmaTy, tcMultiSplitSigmaTy,
-- Predicates.
-- Again, newtypes are opaque
tcEqType, tcEqTypes, tcEqPred, tcCmpType, tcCmpTypes, tcCmpPred, tcEqTypeX,
+ eqKind,
isSigmaTy, isOverloadedTy, isRigidTy, isBoxyTy,
isDoubleTy, isFloatTy, isIntTy, isStringTy,
isIntegerTy, isBoolTy, isUnitTy,
---------------------------------
-- Predicate types
getClassPredTys_maybe, getClassPredTys,
- isClassPred, isTyVarClassPred,
+ isClassPred, isTyVarClassPred, isEqPred,
mkDictTy, tcSplitPredTy_maybe,
isPredTy, isDictTy, tcSplitDFunTy, tcSplitDFunHead, predTyUnique,
mkClassPred, isInheritablePred, isLinearPred, isIPPred, mkPredName,
--------------------------------
-- Rexported from Type
Kind, -- Stuff to do with kinds is insensitive to pre/post Tc
- unliftedTypeKind, liftedTypeKind, unboxedTypeKind,
+ unliftedTypeKind, liftedTypeKind, unboxedTypeKind, argTypeKind,
openTypeKind, mkArrowKind, mkArrowKinds,
- isLiftedTypeKind, isUnliftedTypeKind, isOpenTypeKind,
- isArgTypeKind, isSubKind, defaultKind,
+ isLiftedTypeKind, isUnliftedTypeKind, isSubOpenTypeKind,
+ isSubArgTypeKind, isSubKind, defaultKind,
+ kindVarRef, mkKindVar,
Type, PredType(..), ThetaType,
mkForAllTy, mkForAllTys,
-- Type substitutions
TvSubst(..), -- Representation visible to a few friends
- TvSubstEnv, emptyTvSubst,
+ TvSubstEnv, emptyTvSubst, substEqSpec,
mkOpenTvSubst, zipOpenTvSubst, zipTopTvSubst, mkTopTvSubst, notElemTvSubst,
getTvSubstEnv, setTvSubstEnv, getTvInScope, extendTvInScope, lookupTyVar,
extendTvSubst, extendTvSubstList, isInScope, mkTvSubst, zipTyEnv,
#include "HsVersions.h"
-- friends:
-import TypeRep ( Type(..), funTyCon ) -- friend
+import TypeRep ( Type(..), funTyCon, Kind ) -- friend
import Type ( -- Re-exports
tyVarsOfType, tyVarsOfTypes, tyVarsOfPred,
- tyVarsOfTheta, Kind, PredType(..),
- ThetaType, unliftedTypeKind, unboxedTypeKind,
+ tyVarsOfTheta, Kind, PredType(..), KindVar,
+ ThetaType, isUnliftedTypeKind, unliftedTypeKind,
+-- ??? unboxedTypeKind,
+ argTypeKind,
liftedTypeKind, openTypeKind, mkArrowKind,
- isLiftedTypeKind, isUnliftedTypeKind,
+ tySuperKind, isLiftedTypeKind,
mkArrowKinds, mkForAllTy, mkForAllTys,
- defaultKind, isArgTypeKind, isOpenTypeKind,
+ defaultKind, isSubArgTypeKind, isSubOpenTypeKind,
mkFunTy, mkFunTys, zipFunTys,
mkTyConApp, mkAppTy,
mkAppTys, applyTy, applyTys,
isSubKind, tcView,
tcEqType, tcEqTypes, tcCmpType, tcCmpTypes,
- tcEqPred, tcCmpPred, tcEqTypeX,
+ tcEqPred, tcCmpPred, tcEqTypeX, eqKind,
TvSubst(..),
TvSubstEnv, emptyTvSubst, mkTvSubst, zipTyEnv,
substTy, substTys, substTyWith, substTheta,
substTyVar, substTyVarBndr, substPred, lookupTyVar,
- typeKind, repType, coreView,
+ typeKind, repType, coreView, repSplitAppTy_maybe,
pprKind, pprParendKind,
pprType, pprParendType, pprTyThingCategory,
pprPred, pprTheta, pprThetaArrow, pprClassPred
-- others:
import DynFlags ( DynFlags, DynFlag( Opt_GlasgowExts ), dopt )
-import Name ( Name, NamedThing(..), mkInternalName, getSrcLoc )
+import Name ( Name, NamedThing(..), mkInternalName, getSrcLoc, mkSystemName )
import NameSet
import VarEnv ( TidyEnv )
-import OccName ( OccName, mkDictOcc )
+import OccName ( OccName, mkDictOcc, mkOccName, tvName )
import PrelNames -- Lots (e.g. in isFFIArgumentTy)
import TysWiredIn ( unitTyCon, charTyCon, listTyCon )
import BasicTypes ( IPName(..), Arity, ipNameName )
-- will become type T = forall a. a->a
--
-- With gla-exts that's right, but for H98 we should complain.
+
+---------------------------------
+-- Kind variables:
+
+mkKindName :: Unique -> Name
+mkKindName unique = mkSystemName unique kind_var_occ
+
+kindVarRef :: KindVar -> IORef MetaDetails
+kindVarRef tc =
+ case tcTyVarDetails tc of
+ MetaTv TauTv ref -> ref
+ other -> pprPanic "kindVarRef" (ppr tc)
+
+mkKindVar :: Unique -> IORef MetaDetails -> KindVar
+mkKindVar u r
+ = mkTcTyVar (mkKindName u)
+ tySuperKind -- not sure this is right,
+ -- do we need kind vars for
+ -- coercions?
+ (MetaTv TauTv r)
+
+kind_var_occ :: OccName -- Just one for all KindVars
+ -- They may be jiggled by tidying
+kind_var_occ = mkOccName tvName "k"
+\end{code}
\end{code}
%************************************************************************
%************************************************************************
\begin{code}
+mkSigmaTy :: [TyVar] -> [PredType] -> Type -> Type
mkSigmaTy tyvars theta tau = mkForAllTys tyvars (mkPhiTy theta tau)
mkPhiTy :: [PredType] -> Type -> Type
tcIsForAllTy (ForAllTy tv ty) = True
tcIsForAllTy t = False
-tcSplitPhiTy :: Type -> ([PredType], Type)
+tcSplitPhiTy :: Type -> (ThetaType, Type)
tcSplitPhiTy ty = split ty ty []
where
split orig_ty ty tvs | Just ty' <- tcView ty = split orig_ty ty' tvs
- split orig_ty (FunTy arg res) ts = case tcSplitPredTy_maybe arg of
- Just p -> split res res (p:ts)
- Nothing -> (reverse ts, orig_ty)
+ split orig_ty (FunTy arg res) ts
+ | Just p <- tcSplitPredTy_maybe arg = split res res (p:ts)
split orig_ty ty ts = (reverse ts, orig_ty)
+tcSplitSigmaTy :: Type -> ([TyVar], ThetaType, Type)
tcSplitSigmaTy ty = case tcSplitForAllTys ty of
(tvs, rho) -> case tcSplitPhiTy rho of
(theta, tau) -> (tvs, theta, tau)
| otherwise
= ([], ty)
-tcFunArgTy ty = case tcSplitFunTy_maybe ty of { Just (arg,res) -> arg }
-tcFunResultTy ty = case tcSplitFunTy_maybe ty of { Just (arg,res) -> res }
-
+tcSplitFunTy ty = expectJust "tcSplitFunTy" (tcSplitFunTy_maybe ty)
+tcFunArgTy ty = fst (tcSplitFunTy ty)
+tcFunResultTy ty = snd (tcSplitFunTy ty)
-----------------------
tcSplitAppTy_maybe :: Type -> Maybe (Type, Type)
tcSplitAppTy_maybe ty | Just ty' <- tcView ty = tcSplitAppTy_maybe ty'
-tcSplitAppTy_maybe (FunTy ty1 ty2) = Just (TyConApp funTyCon [ty1], ty2)
-tcSplitAppTy_maybe (AppTy ty1 ty2) = Just (ty1, ty2)
-tcSplitAppTy_maybe (TyConApp tc tys) = case snocView tys of
- Just (tys', ty') -> Just (TyConApp tc tys', ty')
- Nothing -> Nothing
-tcSplitAppTy_maybe other = Nothing
+tcSplitAppTy_maybe ty = repSplitAppTy_maybe ty
+tcSplitAppTy :: Type -> (Type, Type)
tcSplitAppTy ty = case tcSplitAppTy_maybe ty of
Just stuff -> stuff
Nothing -> pprPanic "tcSplitAppTy" (pprType ty)
tcSplitDFunHead tau
= case tcSplitPredTy_maybe tau of
Just (ClassP clas tys) -> (clas, tys)
+ other -> panic "tcSplitDFunHead"
tcValidInstHeadTy :: Type -> Bool
-- Used in Haskell-98 mode, for the argument types of an instance head
getClassPredTys :: PredType -> (Class, [Type])
getClassPredTys (ClassP clas tys) = (clas, tys)
+getClassPredTys other = panic "getClassPredTys"
+
+isEqPred :: PredType -> Bool
+isEqPred (EqPred {}) = True
+isEqPred _ = False
mkDictTy :: Class -> [Type] -> Type
mkDictTy clas tys = mkPredTy (ClassP clas tys)
isLinearPred other = False
\end{code}
+--------------------- Equality predicates ---------------------------------
+\begin{code}
+substEqSpec :: TvSubst -> [(TyVar,Type)] -> [(TcType,TcType)]
+substEqSpec subst eq_spec = [ (substTyVar subst tv, substTy subst ty)
+ | (tv,ty) <- eq_spec]
+\end{code}
+
--------------------- The stupid theta (sigh) ---------------------------------
\begin{code}
| con <- cons
, let Just subst = tcMatchTys tvs1 res_tys1 (dataConResTys con)
, pred <- dataConStupidTheta con ]
+dataConsStupidTheta [] = panic "dataConsStupidTheta"
\end{code}
\begin{code}
tcTyVarsOfType :: Type -> TcTyVarSet
--- Just the tc type variables free in the type
+-- Just the *TcTyVars* free in the type
+-- (Types.tyVarsOfTypes finds all free TyVars)
tcTyVarsOfType (TyVarTy tv) = if isTcTyVar tv then unitVarSet tv
else emptyVarSet
tcTyVarsOfType (TyConApp tycon tys) = tcTyVarsOfTypes tys
toDNType ty
| isStringTy ty = DNString
| isFFIDotnetObjTy ty = DNObject
- | Just (tc,argTys) <- tcSplitTyConApp_maybe ty =
- case lookup (getUnique tc) dn_assoc of
+ | Just (tc,argTys) <- tcSplitTyConApp_maybe ty
+ = case lookup (getUnique tc) dn_assoc of
Just x -> x
Nothing
| tc `hasKey` ioTyConKey -> toDNType (head argTys)
- | otherwise -> pprPanic ("toDNType: unsupported .NET type") (pprType ty <+> parens (hcat (map pprType argTys)) <+> ppr tc)
+ | otherwise -> pprPanic ("toDNType: unsupported .NET type")
+ (pprType ty <+> parens (hcat (map pprType argTys)) <+> ppr tc)
+ | otherwise = panic "toDNType" -- Is this right?
where
dn_assoc :: [ (Unique, DNType) ]
dn_assoc = [ (unitTyConKey, DNUnit)
projects / ghc-hetmet.git / blobdiff