addrDataCon,
addrTy,
addrTyCon,
+ ptrDataCon,
+ ptrTy,
+ ptrTyCon,
+ funPtrDataCon,
+ funPtrTy,
+ funPtrTyCon,
boolTy,
boolTyCon,
charDataCon,
consDataCon,
doubleDataCon,
doubleTy,
- isDoubleTy,
doubleTyCon,
falseDataCon, falseDataConId,
floatDataCon,
floatTy,
- isFloatTy,
floatTyCon,
intDataCon,
intTy,
intTyCon,
- isIntTy,
integerTy,
integerTyCon,
smallIntegerDataCon,
largeIntegerDataCon,
- isIntegerTy,
listTyCon,
wordTy,
wordTyCon,
- isFFIArgumentTy, -- :: Bool -> Type -> Bool
- isFFIResultTy, -- :: Type -> Bool
- isFFIExternalTy, -- :: Type -> Bool
- isFFIDynArgumentTy, -- :: Type -> Bool
- isFFIDynResultTy, -- :: Type -> Bool
- isFFILabelTy, -- :: Type -> Bool
- isAddrTy, -- :: Type -> Bool
- isForeignObjTy -- :: Type -> Bool
-
+ isFFIArgumentTy, -- :: DynFlags -> Safety -> Type -> Bool
+ isFFIImportResultTy, -- :: DynFlags -> Type -> Bool
+ isFFIExportResultTy, -- :: Type -> Bool
+ isFFIExternalTy, -- :: Type -> Bool
+ isFFIDynArgumentTy, -- :: Type -> Bool
+ isFFIDynResultTy, -- :: Type -> Bool
+ isFFILabelTy, -- :: Type -> Bool
) where
#include "HsVersions.h"
import TysPrim
-- others:
+import ForeignCall ( Safety, playSafe )
import Constants ( mAX_TUPLE_SIZE )
import Module ( mkPrelModule )
import Name ( Name, nameRdrName, nameUnique, nameOccName,
nameModule, mkWiredInName )
import OccName ( mkOccFS, tcName, dataName, mkWorkerOcc, mkGenOcc1, mkGenOcc2 )
import RdrName ( rdrNameOcc )
-import DataCon ( DataCon, StrictnessMark(..), mkDataCon, dataConId )
+import DataCon ( DataCon, mkDataCon, dataConId )
import Var ( TyVar, tyVarKind )
import TyCon ( TyCon, AlgTyConFlavour(..), tyConDataCons,
mkTupleTyCon, isUnLiftedTyCon, mkAlgTyCon
)
-import BasicTypes ( Arity, RecFlag(..), Boxity(..), isBoxed )
+import BasicTypes ( Arity, RecFlag(..), Boxity(..), isBoxed, StrictnessMark(..) )
import Type ( Type, mkTyConTy, mkTyConApp, mkTyVarTys,
- mkArrowKinds, boxedTypeKind, unboxedTypeKind,
- splitTyConApp_maybe, repType,
- TauType, ClassContext )
+ mkArrowKinds, liftedTypeKind, unliftedTypeKind,
+ splitTyConApp_maybe,
+ TauType, ThetaType )
import Unique ( incrUnique, mkTupleTyConUnique, mkTupleDataConUnique )
import PrelNames
import CmdLineOpts
data_tycons = genericTyCons ++
[ addrTyCon
+ , ptrTyCon
+ , funPtrTyCon
, boolTyCon
, charTyCon
, doubleTyCon
genericTyCons = [ plusTyCon, crossTyCon, genUnitTyCon ]
-tuple_tycons = unitTyCon : [tupleTyCon Boxed i | i <- [2..37] ]
-unboxed_tuple_tycons = [tupleTyCon Unboxed i | i <- [1..37] ]
+tuple_tycons = unitTyCon : [tupleTyCon Boxed i | i <- [2..mAX_TUPLE_SIZE] ]
+unboxed_tuple_tycons = [tupleTyCon Unboxed i | i <- [1..mAX_TUPLE_SIZE] ]
\end{code}
[] -- No context
argvrcs
cons
- (length cons)
+ (length cons)
+ [] -- No record selectors
new_or_data
is_rec
gen_info
mod = nameModule name
- kind = mkArrowKinds (map tyVarKind tyvars) boxedTypeKind
+ kind = mkArrowKinds (map tyVarKind tyvars) liftedTypeKind
gen_info = mk_tc_gen_info mod (nameUnique name) name tycon
-pcDataCon :: Name -> [TyVar] -> ClassContext -> [TauType] -> TyCon -> DataCon
+-- We generate names for the generic to/from Ids by incrementing
+-- the TyCon unique. So each Prelude tycon needs 3 slots, one
+-- for itself and two more for the generic Ids.
+mk_tc_gen_info mod tc_uniq tc_name tycon
+ = mkTyConGenInfo tycon [name1, name2]
+ where
+ tc_occ_name = nameOccName tc_name
+ occ_name1 = mkGenOcc1 tc_occ_name
+ occ_name2 = mkGenOcc2 tc_occ_name
+ fn1_key = incrUnique tc_uniq
+ fn2_key = incrUnique fn1_key
+ name1 = mkWiredInName mod occ_name1 fn1_key
+ name2 = mkWiredInName mod occ_name2 fn2_key
+
+pcDataCon :: Name -> [TyVar] -> ThetaType -> [TauType] -> TyCon -> DataCon
-- The unique is the first of two free uniques;
-- the first is used for the datacon itself and the worker;
-- the second is used for the wrapper.
tycon = mkTupleTyCon tc_name tc_kind arity tyvars tuple_con boxity gen_info
tc_name = mkWiredInName mod (mkOccFS tcName name_str) tc_uniq
tc_kind = mkArrowKinds (map tyVarKind tyvars) res_kind
- res_kind | isBoxed boxity = boxedTypeKind
- | otherwise = unboxedTypeKind
+ res_kind | isBoxed boxity = liftedTypeKind
+ | otherwise = unliftedTypeKind
tyvars | isBoxed boxity = take arity alphaTyVars
| otherwise = take arity openAlphaTyVars
mod = mkPrelModule mod_name
gen_info = mk_tc_gen_info mod tc_uniq tc_name tycon
-mk_tc_gen_info mod tc_uniq tc_name tycon
- = gen_info
- where
- tc_occ_name = nameOccName tc_name
- occ_name1 = mkGenOcc1 tc_occ_name
- occ_name2 = mkGenOcc2 tc_occ_name
- fn1_key = incrUnique tc_uniq
- fn2_key = incrUnique fn1_key
- name1 = mkWiredInName mod occ_name1 fn1_key
- name2 = mkWiredInName mod occ_name2 fn2_key
- gen_info = mkTyConGenInfo tycon name1 name2
-
unitTyCon = tupleTyCon Boxed 0
unitDataConId = dataConId (head (tyConDataCons unitTyCon))
--
-- data Void = -- No constructors!
--
--- ) It's boxed; there is only one value of this
+-- ) It's lifted; there is only one value of this
-- type, namely "void", whose semantics is just bottom.
--
-- Haskell 98 drops the definition of a Void type, so we just 'simulate'
intTyCon = pcNonRecDataTyCon intTyConName [] [] [intDataCon]
intDataCon = pcDataCon intDataConName [] [] [intPrimTy] intTyCon
-
-isIntTy :: Type -> Bool
-isIntTy = isTyCon intTyConKey
\end{code}
\begin{code}
-
wordTy = mkTyConTy wordTyCon
wordTyCon = pcNonRecDataTyCon wordTyConName [] [] [wordDataCon]
addrTyCon = pcNonRecDataTyCon addrTyConName [] [] [addrDataCon]
addrDataCon = pcDataCon addrDataConName [] [] [addrPrimTy] addrTyCon
+\end{code}
+
+\begin{code}
+ptrTy = mkTyConTy ptrTyCon
-isAddrTy :: Type -> Bool
-isAddrTy = isTyCon addrTyConKey
+ptrTyCon = pcNonRecDataTyCon ptrTyConName alpha_tyvar [(True,False)] [ptrDataCon]
+ptrDataCon = pcDataCon ptrDataConName alpha_tyvar [] [addrPrimTy] ptrTyCon
+\end{code}
+
+\begin{code}
+funPtrTy = mkTyConTy funPtrTyCon
+
+funPtrTyCon = pcNonRecDataTyCon funPtrTyConName alpha_tyvar [(True,False)] [funPtrDataCon]
+funPtrDataCon = pcDataCon funPtrDataConName alpha_tyvar [] [addrPrimTy] funPtrTyCon
\end{code}
\begin{code}
floatTyCon = pcNonRecDataTyCon floatTyConName [] [] [floatDataCon]
floatDataCon = pcDataCon floatDataConName [] [] [floatPrimTy] floatTyCon
-
-isFloatTy :: Type -> Bool
-isFloatTy = isTyCon floatTyConKey
\end{code}
\begin{code}
doubleTy = mkTyConTy doubleTyCon
-isDoubleTy :: Type -> Bool
-isDoubleTy = isTyCon doubleTyConKey
-
doubleTyCon = pcNonRecDataTyCon doubleTyConName [] [] [doubleDataCon]
doubleDataCon = pcDataCon doubleDataConName [] [] [doublePrimTy] doubleTyCon
\end{code}
foreignObjDataCon
= pcDataCon foreignObjDataConName
[] [] [foreignObjPrimTy] foreignObjTyCon
+\end{code}
-isForeignObjTy :: Type -> Bool
-isForeignObjTy = isTyCon foreignObjTyConKey
+\begin{code}
+foreignPtrTyCon
+ = pcNonRecDataTyCon foreignPtrTyConName
+ alpha_tyvar [(True,False)] [foreignPtrDataCon]
+ where
+ foreignPtrDataCon
+ = pcDataCon foreignPtrDataConName
+ alpha_tyvar [] [foreignObjPrimTy] foreignPtrTyCon
\end{code}
%************************************************************************
[] [] [intPrimTy] integerTyCon
largeIntegerDataCon = pcDataCon largeIntegerDataConName
[] [] [intPrimTy, byteArrayPrimTy] integerTyCon
-
-
-isIntegerTy :: Type -> Bool
-isIntegerTy = isTyCon integerTyConKey
\end{code}
being the )
\begin{code}
-isFFIArgumentTy :: DynFlags -> Bool -> Type -> Bool
+isFFIArgumentTy :: DynFlags -> Safety -> Type -> Bool
-- Checks for valid argument type for a 'foreign import'
-isFFIArgumentTy dflags is_safe ty
- = checkRepTyCon (legalOutgoingTyCon dflags is_safe) ty
+isFFIArgumentTy dflags safety ty
+ = checkRepTyCon (legalOutgoingTyCon dflags safety) ty
isFFIExternalTy :: Type -> Bool
-- Types that are allowed as arguments of a 'foreign export'
-isFFIExternalTy ty = checkRepTyCon legalIncomingTyCon ty
+isFFIExternalTy ty = checkRepTyCon legalFEArgTyCon ty
-isFFIResultTy :: Type -> Bool
--- Types that are allowed as a result of a 'foreign import' or of a 'foreign export'
--- Maybe we should distinguish between import and export, but
--- here we just choose the more restrictive 'incoming' predicate
--- But we allow () as well
-isFFIResultTy ty = checkRepTyCon (\tc -> tc == unitTyCon || legalIncomingTyCon tc) ty
+isFFIImportResultTy :: DynFlags -> Type -> Bool
+isFFIImportResultTy dflags ty
+ = checkRepTyCon (legalFIResultTyCon dflags) ty
+
+isFFIExportResultTy :: Type -> Bool
+isFFIExportResultTy ty = checkRepTyCon legalFEResultTyCon ty
isFFIDynArgumentTy :: Type -> Bool
--- The argument type of a foreign import dynamic must be either Addr, or
--- a newtype of Addr.
-isFFIDynArgumentTy = checkRepTyCon (== addrTyCon)
+-- The argument type of a foreign import dynamic must be Ptr, FunPtr, Addr,
+-- or a newtype of either.
+isFFIDynArgumentTy = checkRepTyCon (\tc -> tc == ptrTyCon || tc == funPtrTyCon || tc == addrTyCon)
isFFIDynResultTy :: Type -> Bool
--- The result type of a foreign export dynamic must be either Addr, or
--- a newtype of Addr.
-isFFIDynResultTy = checkRepTyCon (== addrTyCon)
+-- The result type of a foreign export dynamic must be Ptr, FunPtr, Addr,
+-- or a newtype of either.
+isFFIDynResultTy = checkRepTyCon (\tc -> tc == ptrTyCon || tc == funPtrTyCon || tc == addrTyCon)
isFFILabelTy :: Type -> Bool
--- The type of a foreign label must be either Addr, or
--- a newtype of Addr.
-isFFILabelTy = checkRepTyCon (== addrTyCon)
+-- The type of a foreign label must be Ptr, FunPtr, Addr,
+-- or a newtype of either.
+isFFILabelTy = checkRepTyCon (\tc -> tc == ptrTyCon || tc == funPtrTyCon || tc == addrTyCon)
checkRepTyCon :: (TyCon -> Bool) -> Type -> Bool
- -- look through newtypes
-checkRepTyCon check_tc ty = checkTyCon check_tc (repType ty)
-
-checkTyCon :: (TyCon -> Bool) -> Type -> Bool
-checkTyCon check_tc ty = case splitTyConApp_maybe ty of
+ -- Look through newtypes
+checkRepTyCon check_tc ty = case splitTyConApp_maybe ty of
Just (tycon, _) -> check_tc tycon
Nothing -> False
-
-isTyCon :: Unique -> Type -> Bool
-isTyCon uniq ty = checkTyCon (\tc -> uniq == getUnique tc) ty
\end{code}
----------------------------------------------
----------------------------------------------
\begin{code}
-legalIncomingTyCon :: TyCon -> Bool
+legalFEArgTyCon :: TyCon -> Bool
-- It's illegal to return foreign objects and (mutable)
-- bytearrays from a _ccall_ / foreign declaration
-- (or be passed them as arguments in foreign exported functions).
-legalIncomingTyCon tc
- | getUnique tc `elem` [ foreignObjTyConKey, byteArrayTyConKey,
- mutableByteArrayTyConKey ]
+legalFEArgTyCon tc
+ | getUnique tc `elem` [ foreignObjTyConKey, foreignPtrTyConKey,
+ byteArrayTyConKey, mutableByteArrayTyConKey ]
= False
-- It's also illegal to make foreign exports that take unboxed
-- arguments. The RTS API currently can't invoke such things. --SDM 7/2000
| otherwise
= boxedMarshalableTyCon tc
-legalOutgoingTyCon :: DynFlags -> Bool -> TyCon -> Bool
+legalFIResultTyCon :: DynFlags -> TyCon -> Bool
+legalFIResultTyCon dflags tc
+ | getUnique tc `elem`
+ [ foreignObjTyConKey, foreignPtrTyConKey,
+ byteArrayTyConKey, mutableByteArrayTyConKey ] = False
+ | tc == unitTyCon = True
+ | otherwise = marshalableTyCon dflags tc
+
+legalFEResultTyCon :: TyCon -> Bool
+legalFEResultTyCon tc
+ | getUnique tc `elem`
+ [ foreignObjTyConKey, foreignPtrTyConKey,
+ byteArrayTyConKey, mutableByteArrayTyConKey ] = False
+ | tc == unitTyCon = True
+ | otherwise = boxedMarshalableTyCon tc
+
+legalOutgoingTyCon :: DynFlags -> Safety -> TyCon -> Bool
-- Checks validity of types going from Haskell -> external world
--- The boolean is true for a 'safe' call (when we don't want to
--- pass Haskell pointers to the world)
-legalOutgoingTyCon dflags be_safe tc
- | be_safe && getUnique tc `elem` [byteArrayTyConKey, mutableByteArrayTyConKey]
+legalOutgoingTyCon dflags safety tc
+ | playSafe safety && getUnique tc `elem` [byteArrayTyConKey, mutableByteArrayTyConKey]
= False
| otherwise
= marshalableTyCon dflags tc
|| boxedMarshalableTyCon tc
boxedMarshalableTyCon tc
- = getUnique tc `elem` [ intTyConKey, int8TyConKey, int16TyConKey, int32TyConKey, int64TyConKey
- , wordTyConKey, word8TyConKey, word16TyConKey, word32TyConKey, word64TyConKey
+ = getUnique tc `elem` [ intTyConKey, int8TyConKey, int16TyConKey
+ , int32TyConKey, int64TyConKey
+ , wordTyConKey, word8TyConKey, word16TyConKey
+ , word32TyConKey, word64TyConKey
, floatTyConKey, doubleTyConKey
- , addrTyConKey, charTyConKey, foreignObjTyConKey
+ , addrTyConKey, ptrTyConKey, funPtrTyConKey
+ , charTyConKey, foreignObjTyConKey
+ , foreignPtrTyConKey
, stablePtrTyConKey
, byteArrayTyConKey, mutableByteArrayTyConKey
, boolTyConKey
genUnitDataCon :: DataCon
genUnitDataCon = pcDataCon genUnitDataConName [] [] [] genUnitTyCon
\end{code}
-
-
-
-
-
projects / ghc-hetmet.git / blobdiff