X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fprelude%2FTysWiredIn.lhs;h=63dd5243d3d5ffd395bb3eec412b1f17622d4e39;hb=438596897ebbe25a07e1c82085cfbc5bdb00f09e;hp=742510f0699fee19d73ba65a62c4ce9022eb469f;hpb=8de16184643ea3c2f9f30b5eaed18db6ef247760;p=ghc-hetmet.git diff --git a/ghc/compiler/prelude/TysWiredIn.lhs b/ghc/compiler/prelude/TysWiredIn.lhs index 742510f..63dd524 100644 --- a/ghc/compiler/prelude/TysWiredIn.lhs +++ b/ghc/compiler/prelude/TysWiredIn.lhs @@ -1,5 +1,5 @@ % -% (c) The GRASP Project, Glasgow University, 1994-1995 +% (c) The GRASP Project, Glasgow University, 1994-1998 % \section[TysWiredIn]{Wired-in knowledge about {\em non-primitive} types} @@ -10,8 +10,6 @@ This module tracks the ``state interface'' document, ``GHC prelude: types and operations.'' \begin{code} -#include "HsVersions.h" - module TysWiredIn ( addrDataCon, addrTy, @@ -24,114 +22,130 @@ module TysWiredIn ( consDataCon, doubleDataCon, doubleTy, + isDoubleTy, doubleTyCon, falseDataCon, floatDataCon, floatTy, + isFloatTy, floatTyCon, - getStatePairingConInfo, + + voidTyCon, voidTy, + intDataCon, intTy, intTyCon, + isIntTy, + inIntRange, + + int8TyCon, + int16TyCon, + int32TyCon, + + int64TyCon, + int64DataCon, +-- int64Ty, + integerTy, integerTyCon, integerDataCon, - liftDataCon, - liftTyCon, + isIntegerTy, + listTyCon, - foreignObjTyCon, - mkLiftTy, + mkListTy, - mkPrimIoTy, - mkStateTy, - mkStateTransformerTy, - tupleTyCon, tupleCon, unitTyCon, unitDataCon, pairTyCon, pairDataCon, - mkTupleTy, nilDataCon, - primIoTyCon, - realWorldStateTy, - return2GMPsTyCon, - returnIntAndGMPTyCon, - stTyCon, - stDataCon, - stablePtrTyCon, - stateAndAddrPrimTyCon, - stateAndArrayPrimTyCon, - stateAndByteArrayPrimTyCon, - stateAndCharPrimTyCon, - stateAndDoublePrimTyCon, - stateAndFloatPrimTyCon, - stateAndIntPrimTyCon, - stateAndForeignObjPrimTyCon, - stateAndMutableArrayPrimTyCon, - stateAndMutableByteArrayPrimTyCon, - stateAndPtrPrimTyCon, - stateAndStablePtrPrimTyCon, - stateAndSynchVarPrimTyCon, - stateAndWordPrimTyCon, + + -- tuples + mkTupleTy, + tupleTyCon, tupleCon, unitTyCon, unitDataCon, pairTyCon, pairDataCon, + + -- unboxed tuples + mkUnboxedTupleTy, + unboxedTupleTyCon, unboxedTupleCon, + unboxedPairTyCon, unboxedPairDataCon, + stateDataCon, stateTyCon, + realWorldStateTy, + + stablePtrTyCon, stringTy, trueDataCon, unitTy, wordDataCon, wordTy, - wordTyCon + wordTyCon, + + word8TyCon, + word16TyCon, + word32TyCon, + + word64DataCon, +-- word64Ty, + word64TyCon, + + isFFIArgumentTy, -- :: Type -> Bool + isFFIResultTy, -- :: Type -> Bool + isFFIExternalTy, -- :: Type -> Bool + isAddrTy, -- :: Type -> Bool + ) where ---ToDo:rm ---import Pretty ---import Util ---import PprType ---import PprStyle ---import Kind +#include "HsVersions.h" -IMP_Ubiq() -IMPORT_DELOOPER(TyLoop) ( mkDataCon, mkTupleCon, StrictnessMark(..) ) -IMPORT_DELOOPER(IdLoop) ( SpecEnv ) +import {-# SOURCE #-} MkId( mkDataConId ) -- friends: import PrelMods import TysPrim -- others: -import Kind ( mkBoxedTypeKind, mkArrowKind ) -import Name ( mkWiredInTyConName, mkWiredInIdName, mkTupNameStr ) -import TyCon ( mkDataTyCon, mkTupleTyCon, mkSynTyCon, - NewOrData(..), TyCon - ) -import Type ( mkTyConTy, applyTyCon, mkSigmaTy, mkTyVarTys, - mkFunTy, mkFunTys, maybeAppTyCon, - GenType(..), SYN_IE(ThetaType), SYN_IE(TauType) ) -import TyVar ( tyVarKind, alphaTyVars, alphaTyVar, betaTyVar ) -import Lex ( mkTupNameStr ) +import Constants ( mAX_TUPLE_SIZE ) +import Name ( mkWiredInTyConName, mkWiredInIdName, mkTupNameStr, + mkUbxTupNameStr ) +import DataCon ( DataCon, mkDataCon ) +import Var ( TyVar, tyVarKind ) +import TyCon ( TyCon, mkAlgTyCon, mkSynTyCon, mkTupleTyCon ) +import BasicTypes ( Module, Arity, NewOrData(..), + RecFlag(..), StrictnessMark(..) ) +import Type ( Type, mkTyConTy, mkTyConApp, mkSigmaTy, mkTyVarTys, + mkArrowKinds, boxedTypeKind, unboxedTypeKind, + mkFunTy, mkFunTys, isUnLiftedType, + splitTyConApp_maybe, splitAlgTyConApp_maybe, + GenType(..), ThetaType, TauType ) +import PrimRep ( PrimRep(..) ) import Unique +import CmdLineOpts ( opt_GlasgowExts ) import Util ( assoc, panic ) - -nullSpecEnv = error "TysWiredIn:nullSpecEnv = " -addOneToSpecEnv = error "TysWiredIn:addOneToSpecEnv = " -pc_gen_specs = error "TysWiredIn:pc_gen_specs " -mkSpecInfo = error "TysWiredIn:SpecInfo" +import Array alpha_tyvar = [alphaTyVar] alpha_ty = [alphaTy] alpha_beta_tyvars = [alphaTyVar, betaTyVar] -pcDataTyCon, pcNewTyCon +pcRecDataTyCon, pcNonRecDataTyCon, pcNonRecNewTyCon :: Unique{-TyConKey-} -> Module -> FAST_STRING - -> [TyVar] -> [Id] -> TyCon + -> [TyVar] -> [DataCon] -> TyCon -pcDataTyCon = pc_tycon DataType -pcNewTyCon = pc_tycon NewType +pcRecDataTyCon = pcTyCon DataType Recursive +pcNonRecDataTyCon = pcTyCon DataType NonRecursive +pcNonRecNewTyCon = pcTyCon NewType NonRecursive -pc_tycon new_or_data key mod str tyvars cons +pcTyCon new_or_data is_rec key mod str tyvars cons = tycon where - tycon = mkDataTyCon name tycon_kind - tyvars [{-no context-}] cons [{-no derivings-}] + tycon = mkAlgTyCon name kind + tyvars + [] -- No context + cons + [] -- No derivings + Nothing -- Not a dictionary new_or_data + is_rec + name = mkWiredInTyConName key mod str tycon - tycon_kind = foldr (mkArrowKind . tyVarKind) mkBoxedTypeKind tyvars + kind = mkArrowKinds (map tyVarKind tyvars) boxedTypeKind pcSynTyCon key mod str kind arity tyvars expansion = tycon @@ -140,21 +154,16 @@ pcSynTyCon key mod str kind arity tyvars expansion name = mkWiredInTyConName key mod str tycon pcDataCon :: Unique{-DataConKey-} -> Module -> FAST_STRING - -> [TyVar] -> ThetaType -> [TauType] -> TyCon -> SpecEnv -> Id -pcDataCon key mod str tyvars context arg_tys tycon specenv + -> [TyVar] -> ThetaType -> [TauType] -> TyCon -> DataCon +pcDataCon key mod str tyvars context arg_tys tycon = data_con where data_con = mkDataCon name [ NotMarkedStrict | a <- arg_tys ] [ {- no labelled fields -} ] - tyvars context arg_tys tycon - name = mkWiredInIdName key mod str data_con - -pcGenerateDataSpecs :: Type -> SpecEnv -pcGenerateDataSpecs ty - = pc_gen_specs False err err err ty - where - err = panic "PrelUtils:GenerateDataSpecs" + tyvars context [] [] arg_tys tycon id + name = mkWiredInIdName key mod str id + id = mkDataConId data_con \end{code} %************************************************************************ @@ -165,28 +174,38 @@ pcGenerateDataSpecs ty \begin{code} tupleTyCon :: Arity -> TyCon -tupleTyCon arity - = tycon - where - tycon = mkTupleTyCon uniq name arity - uniq = mkTupleTyConUnique arity - name = mkWiredInTyConName uniq mod_name (mkTupNameStr arity) tycon - mod_name | arity == 0 = pREL_BASE - | otherwise = pREL_TUP - -tupleCon :: Arity -> Id -tupleCon arity - = tuple_con +tupleTyCon i | i > mAX_TUPLE_SIZE = fst (mk_tuple i) -- Build one specially + | otherwise = tupleTyConArr!i + +tupleCon :: Arity -> DataCon +tupleCon i | i > mAX_TUPLE_SIZE = snd (mk_tuple i) -- Build one specially + | otherwise = tupleConArr!i + +tupleTyCons :: [TyCon] +tupleTyCons = elems tupleTyConArr + +tupleTyConArr :: Array Int TyCon +tupleTyConArr = array (0,mAX_TUPLE_SIZE) ([0..] `zip` map fst tuples) + +tupleConArr :: Array Int DataCon +tupleConArr = array (0,mAX_TUPLE_SIZE) ([0..] `zip` map snd tuples) + +tuples :: [(TyCon,DataCon)] +tuples = [mk_tuple i | i <- [0..mAX_TUPLE_SIZE]] + +mk_tuple :: Int -> (TyCon,DataCon) +mk_tuple arity = (tycon, tuple_con) where - tuple_con = mkTupleCon arity name ty - uniq = mkTupleDataConUnique arity - name = mkWiredInIdName uniq mod_name (mkTupNameStr arity) tuple_con - mod_name | arity == 0 = pREL_BASE - | otherwise = pREL_TUP - ty = mkSigmaTy tyvars [] (mkFunTys tyvar_tys (applyTyCon tycon tyvar_tys)) - tyvars = take arity alphaTyVars - tyvar_tys = mkTyVarTys tyvars - tycon = tupleTyCon arity + tycon = mkTupleTyCon tc_name tc_kind arity tyvars tuple_con True + tc_name = mkWiredInTyConName tc_uniq mod_name name_str tycon + tc_kind = mkArrowKinds (map tyVarKind tyvars) boxedTypeKind + + tuple_con = pcDataCon dc_uniq mod_name name_str tyvars [] tyvar_tys tycon + tyvars = take arity alphaTyVars + tyvar_tys = mkTyVarTys tyvars + (mod_name, name_str) = mkTupNameStr arity + tc_uniq = mkTupleTyConUnique arity + dc_uniq = mkTupleDataConUnique arity unitTyCon = tupleTyCon 0 pairTyCon = tupleTyCon 2 @@ -195,6 +214,47 @@ unitDataCon = tupleCon 0 pairDataCon = tupleCon 2 \end{code} +%************************************************************************ +%* * +\subsection[TysWiredIn-ubx-tuples]{Unboxed Tuple Types} +%* * +%************************************************************************ + +\begin{code} +unboxedTupleTyCon :: Arity -> TyCon +unboxedTupleTyCon i | i > mAX_TUPLE_SIZE = fst (mk_unboxed_tuple i) + | otherwise = unboxedTupleTyConArr!i + +unboxedTupleCon :: Arity -> DataCon +unboxedTupleCon i | i > mAX_TUPLE_SIZE = snd (mk_unboxed_tuple i) + | otherwise = unboxedTupleConArr!i + +unboxedTupleTyConArr :: Array Int TyCon +unboxedTupleTyConArr = array (0,mAX_TUPLE_SIZE) ([0..] `zip` map fst ubx_tuples) + +unboxedTupleConArr :: Array Int DataCon +unboxedTupleConArr = array (0,mAX_TUPLE_SIZE) ([0..] `zip` map snd ubx_tuples) + +ubx_tuples :: [(TyCon,DataCon)] +ubx_tuples = [mk_unboxed_tuple i | i <- [0..mAX_TUPLE_SIZE]] + +mk_unboxed_tuple :: Int -> (TyCon,DataCon) +mk_unboxed_tuple arity = (tycon, tuple_con) + where + tycon = mkTupleTyCon tc_name tc_kind arity tyvars tuple_con False + tc_name = mkWiredInTyConName tc_uniq mod_name name_str tycon + tc_kind = mkArrowKinds (map tyVarKind tyvars) unboxedTypeKind + + tuple_con = pcDataCon dc_uniq mod_name name_str tyvars [] tyvar_tys tycon + tyvars = take arity openAlphaTyVars + tyvar_tys = mkTyVarTys tyvars + (mod_name, name_str) = mkUbxTupNameStr arity + tc_uniq = mkUbxTupleTyConUnique arity + dc_uniq = mkUbxTupleDataConUnique arity + +unboxedPairTyCon = unboxedTupleTyCon 2 +unboxedPairDataCon = unboxedTupleCon 2 +\end{code} %************************************************************************ %* * @@ -203,10 +263,23 @@ pairDataCon = tupleCon 2 %************************************************************************ \begin{code} +-- The Void type is represented as a data type with no constructors +-- It's a built in type (i.e. there's no way to define it in Haskell; +-- the nearest would be +-- +-- data Void = -- No constructors! +-- +-- ) It's boxed; there is only one value of this +-- type, namely "void", whose semantics is just bottom. +voidTy = mkTyConTy voidTyCon +voidTyCon = pcNonRecDataTyCon voidTyConKey pREL_GHC SLIT("Void") [] [{-No data cons-}] +\end{code} + +\begin{code} charTy = mkTyConTy charTyCon -charTyCon = pcDataTyCon charTyConKey pREL_BASE SLIT("Char") [] [charDataCon] -charDataCon = pcDataCon charDataConKey pREL_BASE SLIT("C#") [] [] [charPrimTy] charTyCon nullSpecEnv +charTyCon = pcNonRecDataTyCon charTyConKey pREL_BASE SLIT("Char") [] [charDataCon] +charDataCon = pcDataCon charDataConKey pREL_BASE SLIT("C#") [] [] [charPrimTy] charTyCon stringTy = mkListTy charTy -- convenience only \end{code} @@ -214,66 +287,134 @@ stringTy = mkListTy charTy -- convenience only \begin{code} intTy = mkTyConTy intTyCon -intTyCon = pcDataTyCon intTyConKey pREL_BASE SLIT("Int") [] [intDataCon] -intDataCon = pcDataCon intDataConKey pREL_BASE SLIT("I#") [] [] [intPrimTy] intTyCon nullSpecEnv +intTyCon = pcNonRecDataTyCon intTyConKey pREL_BASE SLIT("Int") [] [intDataCon] +intDataCon = pcDataCon intDataConKey pREL_BASE SLIT("I#") [] [] [intPrimTy] intTyCon + +isIntTy :: GenType flexi -> Bool +isIntTy ty + = case (splitAlgTyConApp_maybe ty) of + Just (tycon, [], _) -> getUnique tycon == intTyConKey + _ -> False + +inIntRange :: Integer -> Bool -- Tells if an integer lies in the legal range of Ints +inIntRange i = (min_int <= i) && (i <= max_int) + +max_int, min_int :: Integer +max_int = toInteger maxInt +min_int = toInteger minInt + +int8TyCon = pcNonRecDataTyCon int8TyConKey iNT SLIT("Int8") [] [int8DataCon] + where + int8DataCon = pcDataCon int8DataConKey iNT SLIT("I8#") [] [] [intPrimTy] int8TyCon + +int16TyCon = pcNonRecDataTyCon int16TyConKey iNT SLIT("Int16") [] [int16DataCon] + where + int16DataCon = pcDataCon int16DataConKey iNT SLIT("I16#") [] [] [intPrimTy] int16TyCon + +int32TyCon = pcNonRecDataTyCon int32TyConKey iNT SLIT("Int32") [] [int32DataCon] + where + int32DataCon = pcDataCon int32DataConKey iNT SLIT("I32#") [] [] [intPrimTy] int32TyCon + +int64Ty = mkTyConTy int64TyCon + +int64TyCon = pcNonRecDataTyCon int64TyConKey pREL_ADDR SLIT("Int64") [] [int64DataCon] +int64DataCon = pcDataCon int64DataConKey pREL_ADDR SLIT("I64#") [] [] [int64PrimTy] int64TyCon \end{code} \begin{code} + wordTy = mkTyConTy wordTyCon -wordTyCon = pcDataTyCon wordTyConKey fOREIGN SLIT("Word") [] [wordDataCon] -wordDataCon = pcDataCon wordDataConKey gHC__ SLIT("W#") [] [] [wordPrimTy] wordTyCon nullSpecEnv +wordTyCon = pcNonRecDataTyCon wordTyConKey pREL_ADDR SLIT("Word") [] [wordDataCon] +wordDataCon = pcDataCon wordDataConKey pREL_ADDR SLIT("W#") [] [] [wordPrimTy] wordTyCon + +word8TyCon = pcNonRecDataTyCon word8TyConKey wORD SLIT("Word8") [] [word8DataCon] + where + word8DataCon = pcDataCon word8DataConKey wORD SLIT("W8#") [] [] [wordPrimTy] word8TyCon + +word16TyCon = pcNonRecDataTyCon word16TyConKey wORD SLIT("Word16") [] [word16DataCon] + where + word16DataCon = pcDataCon word16DataConKey wORD SLIT("W16#") [] [] [wordPrimTy] word16TyCon + +word32TyCon = pcNonRecDataTyCon word32TyConKey wORD SLIT("Word32") [] [word32DataCon] + where + word32DataCon = pcDataCon word32DataConKey wORD SLIT("W32#") [] [] [wordPrimTy] word32TyCon + +word64Ty = mkTyConTy word64TyCon + +word64TyCon = pcNonRecDataTyCon word64TyConKey pREL_ADDR SLIT("Word64") [] [word64DataCon] +word64DataCon = pcDataCon word64DataConKey pREL_ADDR SLIT("W64#") [] [] [word64PrimTy] word64TyCon \end{code} \begin{code} addrTy = mkTyConTy addrTyCon -addrTyCon = pcDataTyCon addrTyConKey fOREIGN SLIT("Addr") [] [addrDataCon] -addrDataCon = pcDataCon addrDataConKey gHC__ SLIT("A#") [] [] [addrPrimTy] addrTyCon nullSpecEnv +addrTyCon = pcNonRecDataTyCon addrTyConKey pREL_ADDR SLIT("Addr") [] [addrDataCon] +addrDataCon = pcDataCon addrDataConKey pREL_ADDR SLIT("A#") [] [] [addrPrimTy] addrTyCon + +isAddrTy :: GenType flexi -> Bool +isAddrTy ty + = case (splitAlgTyConApp_maybe ty) of + Just (tycon, [], _) -> getUnique tycon == addrTyConKey + _ -> False + \end{code} \begin{code} floatTy = mkTyConTy floatTyCon -floatTyCon = pcDataTyCon floatTyConKey pREL_BASE SLIT("Float") [] [floatDataCon] -floatDataCon = pcDataCon floatDataConKey pREL_BASE SLIT("F#") [] [] [floatPrimTy] floatTyCon nullSpecEnv +floatTyCon = pcNonRecDataTyCon floatTyConKey pREL_BASE SLIT("Float") [] [floatDataCon] +floatDataCon = pcDataCon floatDataConKey pREL_BASE SLIT("F#") [] [] [floatPrimTy] floatTyCon + +isFloatTy :: GenType flexi -> Bool +isFloatTy ty + = case (splitAlgTyConApp_maybe ty) of + Just (tycon, [], _) -> getUnique tycon == floatTyConKey + _ -> False + \end{code} \begin{code} doubleTy = mkTyConTy doubleTyCon -doubleTyCon = pcDataTyCon doubleTyConKey pREL_BASE SLIT("Double") [] [doubleDataCon] -doubleDataCon = pcDataCon doubleDataConKey pREL_BASE SLIT("D#") [] [] [doublePrimTy] doubleTyCon nullSpecEnv +isDoubleTy :: GenType flexi -> Bool +isDoubleTy ty + = case (splitAlgTyConApp_maybe ty) of + Just (tycon, [], _) -> getUnique tycon == doubleTyConKey + _ -> False + +doubleTyCon = pcNonRecDataTyCon doubleTyConKey pREL_BASE SLIT("Double") [] [doubleDataCon] +doubleDataCon = pcDataCon doubleDataConKey pREL_BASE SLIT("D#") [] [] [doublePrimTy] doubleTyCon \end{code} \begin{code} -mkStateTy ty = applyTyCon stateTyCon [ty] +mkStateTy ty = mkTyConApp stateTyCon [ty] realWorldStateTy = mkStateTy realWorldTy -- a common use -stateTyCon = pcDataTyCon stateTyConKey sT_BASE SLIT("State") alpha_tyvar [stateDataCon] +stateTyCon = pcNonRecDataTyCon stateTyConKey pREL_ST SLIT("State") alpha_tyvar [stateDataCon] stateDataCon - = pcDataCon stateDataConKey sT_BASE SLIT("S#") - alpha_tyvar [] [mkStatePrimTy alphaTy] stateTyCon nullSpecEnv + = pcDataCon stateDataConKey pREL_ST SLIT("S#") + alpha_tyvar [] [mkStatePrimTy alphaTy] stateTyCon \end{code} \begin{code} stablePtrTyCon - = pcDataTyCon stablePtrTyConKey fOREIGN SLIT("StablePtr") + = pcNonRecDataTyCon stablePtrTyConKey pREL_FOREIGN SLIT("StablePtr") alpha_tyvar [stablePtrDataCon] where stablePtrDataCon - = pcDataCon stablePtrDataConKey fOREIGN SLIT("StablePtr") - alpha_tyvar [] [mkStablePtrPrimTy alphaTy] stablePtrTyCon nullSpecEnv + = pcDataCon stablePtrDataConKey pREL_FOREIGN SLIT("StablePtr") + alpha_tyvar [] [mkStablePtrPrimTy alphaTy] stablePtrTyCon \end{code} \begin{code} foreignObjTyCon - = pcDataTyCon foreignObjTyConKey fOREIGN SLIT("ForeignObj") + = pcNonRecDataTyCon foreignObjTyConKey pREL_IO_BASE SLIT("ForeignObj") [] [foreignObjDataCon] where foreignObjDataCon - = pcDataCon foreignObjDataConKey fOREIGN SLIT("ForeignObj") - [] [] [foreignObjPrimTy] foreignObjTyCon nullSpecEnv + = pcDataCon foreignObjDataConKey pREL_IO_BASE SLIT("ForeignObj") + [] [] [foreignObjPrimTy] foreignObjTyCon \end{code} %************************************************************************ @@ -284,235 +425,83 @@ foreignObjTyCon @Integer@ and its pals are not really primitive. @Integer@ itself, first: \begin{code} -integerTy :: GenType t u +integerTy :: GenType t integerTy = mkTyConTy integerTyCon -integerTyCon = pcDataTyCon integerTyConKey pREL_BASE SLIT("Integer") [] [integerDataCon] +integerTyCon = pcNonRecDataTyCon integerTyConKey pREL_BASE SLIT("Integer") [] [integerDataCon] integerDataCon = pcDataCon integerDataConKey pREL_BASE SLIT("J#") - [] [] [intPrimTy, intPrimTy, byteArrayPrimTy] integerTyCon nullSpecEnv -\end{code} - -And the other pairing types: -\begin{code} -return2GMPsTyCon = pcDataTyCon return2GMPsTyConKey - pREL_NUM SLIT("Return2GMPs") [] [return2GMPsDataCon] - -return2GMPsDataCon - = pcDataCon return2GMPsDataConKey pREL_NUM SLIT("Return2GMPs") [] [] - [intPrimTy, intPrimTy, byteArrayPrimTy, - intPrimTy, intPrimTy, byteArrayPrimTy] return2GMPsTyCon nullSpecEnv - -returnIntAndGMPTyCon = pcDataTyCon returnIntAndGMPTyConKey - pREL_NUM SLIT("ReturnIntAndGMP") [] [returnIntAndGMPDataCon] + [] [] [intPrimTy, intPrimTy, byteArrayPrimTy] integerTyCon -returnIntAndGMPDataCon - = pcDataCon returnIntAndGMPDataConKey pREL_NUM SLIT("ReturnIntAndGMP") [] [] - [intPrimTy, intPrimTy, intPrimTy, byteArrayPrimTy] returnIntAndGMPTyCon nullSpecEnv +isIntegerTy :: GenType flexi -> Bool +isIntegerTy ty + = case (splitAlgTyConApp_maybe ty) of + Just (tycon, [], _) -> getUnique tycon == integerTyConKey + _ -> False \end{code} + %************************************************************************ %* * -\subsection[TysWiredIn-state-pairing]{``State-pairing'' types} +\subsection[TysWiredIn-ext-type]{External types} %* * %************************************************************************ -These boring types pair a \tr{State#} with another primitive type. -They are not really primitive, so they are given here, not in -\tr{TysPrim.lhs}. - -We fish one of these \tr{StateAnd#} things with -@getStatePairingConInfo@ (given a little way down). - -\begin{code} -stateAndPtrPrimTyCon - = pcDataTyCon stateAndPtrPrimTyConKey sT_BASE SLIT("StateAndPtr#") - alpha_beta_tyvars [stateAndPtrPrimDataCon] -stateAndPtrPrimDataCon - = pcDataCon stateAndPtrPrimDataConKey sT_BASE SLIT("StateAndPtr#") - alpha_beta_tyvars [] [mkStatePrimTy alphaTy, betaTy] - stateAndPtrPrimTyCon nullSpecEnv - -stateAndCharPrimTyCon - = pcDataTyCon stateAndCharPrimTyConKey sT_BASE SLIT("StateAndChar#") - alpha_tyvar [stateAndCharPrimDataCon] -stateAndCharPrimDataCon - = pcDataCon stateAndCharPrimDataConKey sT_BASE SLIT("StateAndChar#") - alpha_tyvar [] [mkStatePrimTy alphaTy, charPrimTy] - stateAndCharPrimTyCon nullSpecEnv - -stateAndIntPrimTyCon - = pcDataTyCon stateAndIntPrimTyConKey sT_BASE SLIT("StateAndInt#") - alpha_tyvar [stateAndIntPrimDataCon] -stateAndIntPrimDataCon - = pcDataCon stateAndIntPrimDataConKey sT_BASE SLIT("StateAndInt#") - alpha_tyvar [] [mkStatePrimTy alphaTy, intPrimTy] - stateAndIntPrimTyCon nullSpecEnv - -stateAndWordPrimTyCon - = pcDataTyCon stateAndWordPrimTyConKey sT_BASE SLIT("StateAndWord#") - alpha_tyvar [stateAndWordPrimDataCon] -stateAndWordPrimDataCon - = pcDataCon stateAndWordPrimDataConKey sT_BASE SLIT("StateAndWord#") - alpha_tyvar [] [mkStatePrimTy alphaTy, wordPrimTy] - stateAndWordPrimTyCon nullSpecEnv - -stateAndAddrPrimTyCon - = pcDataTyCon stateAndAddrPrimTyConKey sT_BASE SLIT("StateAndAddr#") - alpha_tyvar [stateAndAddrPrimDataCon] -stateAndAddrPrimDataCon - = pcDataCon stateAndAddrPrimDataConKey sT_BASE SLIT("StateAndAddr#") - alpha_tyvar [] [mkStatePrimTy alphaTy, addrPrimTy] - stateAndAddrPrimTyCon nullSpecEnv - -stateAndStablePtrPrimTyCon - = pcDataTyCon stateAndStablePtrPrimTyConKey fOREIGN SLIT("StateAndStablePtr#") - alpha_beta_tyvars [stateAndStablePtrPrimDataCon] -stateAndStablePtrPrimDataCon - = pcDataCon stateAndStablePtrPrimDataConKey fOREIGN SLIT("StateAndStablePtr#") - alpha_beta_tyvars [] - [mkStatePrimTy alphaTy, applyTyCon stablePtrPrimTyCon [betaTy]] - stateAndStablePtrPrimTyCon nullSpecEnv - -stateAndForeignObjPrimTyCon - = pcDataTyCon stateAndForeignObjPrimTyConKey fOREIGN SLIT("StateAndForeignObj#") - alpha_tyvar [stateAndForeignObjPrimDataCon] -stateAndForeignObjPrimDataCon - = pcDataCon stateAndForeignObjPrimDataConKey fOREIGN SLIT("StateAndForeignObj#") - alpha_tyvar [] - [mkStatePrimTy alphaTy, applyTyCon foreignObjPrimTyCon []] - stateAndForeignObjPrimTyCon nullSpecEnv - -stateAndFloatPrimTyCon - = pcDataTyCon stateAndFloatPrimTyConKey sT_BASE SLIT("StateAndFloat#") - alpha_tyvar [stateAndFloatPrimDataCon] -stateAndFloatPrimDataCon - = pcDataCon stateAndFloatPrimDataConKey sT_BASE SLIT("StateAndFloat#") - alpha_tyvar [] [mkStatePrimTy alphaTy, floatPrimTy] - stateAndFloatPrimTyCon nullSpecEnv - -stateAndDoublePrimTyCon - = pcDataTyCon stateAndDoublePrimTyConKey sT_BASE SLIT("StateAndDouble#") - alpha_tyvar [stateAndDoublePrimDataCon] -stateAndDoublePrimDataCon - = pcDataCon stateAndDoublePrimDataConKey sT_BASE SLIT("StateAndDouble#") - alpha_tyvar [] [mkStatePrimTy alphaTy, doublePrimTy] - stateAndDoublePrimTyCon nullSpecEnv -\end{code} - -\begin{code} -stateAndArrayPrimTyCon - = pcDataTyCon stateAndArrayPrimTyConKey aRR_BASE SLIT("StateAndArray#") - alpha_beta_tyvars [stateAndArrayPrimDataCon] -stateAndArrayPrimDataCon - = pcDataCon stateAndArrayPrimDataConKey aRR_BASE SLIT("StateAndArray#") - alpha_beta_tyvars [] [mkStatePrimTy alphaTy, mkArrayPrimTy betaTy] - stateAndArrayPrimTyCon nullSpecEnv - -stateAndMutableArrayPrimTyCon - = pcDataTyCon stateAndMutableArrayPrimTyConKey aRR_BASE SLIT("StateAndMutableArray#") - alpha_beta_tyvars [stateAndMutableArrayPrimDataCon] -stateAndMutableArrayPrimDataCon - = pcDataCon stateAndMutableArrayPrimDataConKey aRR_BASE SLIT("StateAndMutableArray#") - alpha_beta_tyvars [] [mkStatePrimTy alphaTy, mkMutableArrayPrimTy alphaTy betaTy] - stateAndMutableArrayPrimTyCon nullSpecEnv - -stateAndByteArrayPrimTyCon - = pcDataTyCon stateAndByteArrayPrimTyConKey aRR_BASE SLIT("StateAndByteArray#") - alpha_tyvar [stateAndByteArrayPrimDataCon] -stateAndByteArrayPrimDataCon - = pcDataCon stateAndByteArrayPrimDataConKey aRR_BASE SLIT("StateAndByteArray#") - alpha_tyvar [] [mkStatePrimTy alphaTy, byteArrayPrimTy] - stateAndByteArrayPrimTyCon nullSpecEnv - -stateAndMutableByteArrayPrimTyCon - = pcDataTyCon stateAndMutableByteArrayPrimTyConKey aRR_BASE SLIT("StateAndMutableByteArray#") - alpha_tyvar [stateAndMutableByteArrayPrimDataCon] -stateAndMutableByteArrayPrimDataCon - = pcDataCon stateAndMutableByteArrayPrimDataConKey aRR_BASE SLIT("StateAndMutableByteArray#") - alpha_tyvar [] [mkStatePrimTy alphaTy, applyTyCon mutableByteArrayPrimTyCon alpha_ty] - stateAndMutableByteArrayPrimTyCon nullSpecEnv - -stateAndSynchVarPrimTyCon - = pcDataTyCon stateAndSynchVarPrimTyConKey cONC_BASE SLIT("StateAndSynchVar#") - alpha_beta_tyvars [stateAndSynchVarPrimDataCon] -stateAndSynchVarPrimDataCon - = pcDataCon stateAndSynchVarPrimDataConKey cONC_BASE SLIT("StateAndSynchVar#") - alpha_beta_tyvars [] [mkStatePrimTy alphaTy, mkSynchVarPrimTy alphaTy betaTy] - stateAndSynchVarPrimTyCon nullSpecEnv -\end{code} - -The ccall-desugaring mechanism uses this function to figure out how to -rebox the result. It's really a HACK, especially the part about -how many types to drop from \tr{tys_applied}. +The compiler's foreign function interface supports the passing of a +restricted set of types as arguments and results (the restricting factor +being the ) \begin{code} -getStatePairingConInfo - :: Type -- primitive type - -> (Id, -- state pair constructor for prim type - Type) -- type of state pair - -getStatePairingConInfo prim_ty - = case (maybeAppTyCon prim_ty) of - Nothing -> panic "getStatePairingConInfo:1" - Just (prim_tycon, tys_applied) -> +isFFIArgumentTy :: Type -> Bool +isFFIArgumentTy ty = + (opt_GlasgowExts && isUnLiftedType ty) || --leave out for now: maybeToBool (maybeBoxedPrimType ty))) || + case (splitAlgTyConApp_maybe ty) of + Just (tycon, _, _) -> (getUnique tycon) `elem` primArgTyConKeys + _ -> False + +-- types that can be passed as arguments to "foreign" functions +primArgTyConKeys + = [ intTyConKey, int8TyConKey, int16TyConKey, int32TyConKey, int64TyConKey + , wordTyConKey, word8TyConKey, word16TyConKey, word32TyConKey, word64TyConKey + , floatTyConKey, doubleTyConKey + , addrTyConKey, charTyConKey, foreignObjTyConKey + , stablePtrTyConKey, byteArrayTyConKey, mutableByteArrayTyConKey + ] + +-- types that can be passed from the outside world into Haskell. +-- excludes (mutable) byteArrays. +isFFIExternalTy :: Type -> Bool +isFFIExternalTy ty = + (opt_GlasgowExts && isUnLiftedType ty) || --leave out for now: maybeToBool (maybeBoxedPrimType ty))) || + case (splitAlgTyConApp_maybe ty) of + Just (tycon, _, _) -> + let + u_tycon = getUnique tycon + in + (u_tycon `elem` primArgTyConKeys) && + not (u_tycon `elem` notLegalExternalTyCons) + _ -> False + + +isFFIResultTy :: Type -> Bool +isFFIResultTy ty = + not (isUnLiftedType ty) && + case (splitAlgTyConApp_maybe ty) of + Just (tycon, _, _) -> let - (pair_con, pair_tycon, num_tys) = assoc "getStatePairingConInfo" tbl prim_tycon - pair_ty = applyTyCon pair_tycon (realWorldTy : drop num_tys tys_applied) + u_tycon = getUnique tycon in - (pair_con, pair_ty) - where - tbl = [ - (charPrimTyCon, (stateAndCharPrimDataCon, stateAndCharPrimTyCon, 0)), - (intPrimTyCon, (stateAndIntPrimDataCon, stateAndIntPrimTyCon, 0)), - (wordPrimTyCon, (stateAndWordPrimDataCon, stateAndWordPrimTyCon, 0)), - (addrPrimTyCon, (stateAndAddrPrimDataCon, stateAndAddrPrimTyCon, 0)), - (stablePtrPrimTyCon, (stateAndStablePtrPrimDataCon, stateAndStablePtrPrimTyCon, 0)), - (foreignObjPrimTyCon, (stateAndForeignObjPrimDataCon, stateAndForeignObjPrimTyCon, 0)), - (floatPrimTyCon, (stateAndFloatPrimDataCon, stateAndFloatPrimTyCon, 0)), - (doublePrimTyCon, (stateAndDoublePrimDataCon, stateAndDoublePrimTyCon, 0)), - (arrayPrimTyCon, (stateAndArrayPrimDataCon, stateAndArrayPrimTyCon, 0)), - (mutableArrayPrimTyCon, (stateAndMutableArrayPrimDataCon, stateAndMutableArrayPrimTyCon, 1)), - (byteArrayPrimTyCon, (stateAndByteArrayPrimDataCon, stateAndByteArrayPrimTyCon, 0)), - (mutableByteArrayPrimTyCon, (stateAndMutableByteArrayPrimDataCon, stateAndMutableByteArrayPrimTyCon, 1)), - (synchVarPrimTyCon, (stateAndSynchVarPrimDataCon, stateAndSynchVarPrimTyCon, 1)) - -- (PtrPrimTyCon, (stateAndPtrPrimDataCon, stateAndPtrPrimTyCon, 0)), - ] -\end{code} - -%************************************************************************ -%* * -\subsection[TysWiredIn-ST]{The basic @_ST@ state-transformer type} -%* * -%************************************************************************ - -This is really just an ordinary synonym, except it is ABSTRACT. - -\begin{code} -mkStateTransformerTy s a = applyTyCon stTyCon [s, a] - -stTyCon = pcNewTyCon stTyConKey sT_BASE SLIT("ST") alpha_beta_tyvars [stDataCon] - -stDataCon = pcDataCon stDataConKey sT_BASE SLIT("ST") - alpha_beta_tyvars [] [ty] stTyCon nullSpecEnv - where - ty = mkFunTy (mkStateTy alphaTy) (mkTupleTy 2 [betaTy, mkStateTy alphaTy]) -\end{code} - -%************************************************************************ -%* * -\subsection[TysWiredIn-IO]{The @PrimIO@ monadic-I/O type} -%* * -%************************************************************************ - -\begin{code} -mkPrimIoTy a = mkStateTransformerTy realWorldTy a - -primIoTyCon - = pcSynTyCon - primIoTyConKey sT_BASE SLIT("PrimIO") - (mkBoxedTypeKind `mkArrowKind` mkBoxedTypeKind) - 1 alpha_tyvar (mkPrimIoTy alphaTy) + (u_tycon == getUnique unitTyCon) || + ((u_tycon `elem` primArgTyConKeys) && + not (u_tycon `elem` notLegalExternalTyCons)) + _ -> False + +-- 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). +notLegalExternalTyCons = + [ foreignObjTyConKey, byteArrayTyConKey, mutableByteArrayTyConKey ] + \end{code} %************************************************************************ @@ -566,10 +555,11 @@ primitive counterpart. \begin{code} boolTy = mkTyConTy boolTyCon -boolTyCon = pcDataTyCon boolTyConKey pREL_BASE SLIT("Bool") [] [falseDataCon, trueDataCon] +boolTyCon = pcTyCon EnumType NonRecursive boolTyConKey + pREL_BASE SLIT("Bool") [] [falseDataCon, trueDataCon] -falseDataCon = pcDataCon falseDataConKey pREL_BASE SLIT("False") [] [] [] boolTyCon nullSpecEnv -trueDataCon = pcDataCon trueDataConKey pREL_BASE SLIT("True") [] [] [] boolTyCon nullSpecEnv +falseDataCon = pcDataCon falseDataConKey pREL_BASE SLIT("False") [] [] [] boolTyCon +trueDataCon = pcDataCon trueDataConKey pREL_BASE SLIT("True") [] [] [] boolTyCon \end{code} %************************************************************************ @@ -588,19 +578,17 @@ data (,) a b = (,,) a b \end{verbatim} \begin{code} -mkListTy :: GenType t u -> GenType t u -mkListTy ty = applyTyCon listTyCon [ty] +mkListTy :: GenType t -> GenType t +mkListTy ty = mkTyConApp listTyCon [ty] -alphaListTy = mkSigmaTy alpha_tyvar [] (applyTyCon listTyCon alpha_ty) +alphaListTy = mkSigmaTy alpha_tyvar [] (mkTyConApp listTyCon alpha_ty) -listTyCon = pcDataTyCon listTyConKey pREL_BASE SLIT("[]") +listTyCon = pcRecDataTyCon listTyConKey pREL_BASE SLIT("[]") alpha_tyvar [nilDataCon, consDataCon] nilDataCon = pcDataCon nilDataConKey pREL_BASE SLIT("[]") alpha_tyvar [] [] listTyCon - (pcGenerateDataSpecs alphaListTy) consDataCon = pcDataCon consDataConKey pREL_BASE SLIT(":") - alpha_tyvar [] [alphaTy, applyTyCon listTyCon alpha_ty] listTyCon - (pcGenerateDataSpecs alphaListTy) + alpha_tyvar [] [alphaTy, mkTyConApp listTyCon alpha_ty] listTyCon -- Interesting: polymorphic recursion would help here. -- We can't use (mkListTy alphaTy) in the defn of consDataCon, else mkListTy -- gets the over-specific type (Type -> Type) @@ -653,49 +641,11 @@ done by enumeration\srcloc{lib/prelude/InTup?.hs}. \end{itemize} \begin{code} -mkTupleTy :: Int -> [GenType t u] -> GenType t u +mkTupleTy :: Int -> [GenType t] -> GenType t +mkTupleTy arity tys = mkTyConApp (tupleTyCon arity) tys -mkTupleTy arity tys = applyTyCon (tupleTyCon arity) tys +mkUnboxedTupleTy :: Int -> [GenType t] -> GenType t +mkUnboxedTupleTy arity tys = mkTyConApp (unboxedTupleTyCon arity) tys unitTy = mkTupleTy 0 [] \end{code} - -%************************************************************************ -%* * -\subsection[TysWiredIn-_Lift]{@_Lift@ type: to support array indexing} -%* * -%************************************************************************ - -Again, deeply turgid: \tr{data _Lift a = _Lift a}. - -\begin{code} -mkLiftTy ty = applyTyCon liftTyCon [ty] - -{- -mkLiftTy ty - = mkSigmaTy tvs theta (applyTyCon liftTyCon [tau]) - where - (tvs, theta, tau) = splitSigmaTy ty - -isLiftTy ty - = case (maybeAppDataTyConExpandingDicts tau) of - Just (tycon, tys, _) -> tycon == liftTyCon - Nothing -> False - where - (tvs, theta, tau) = splitSigmaTy ty --} - - -alphaLiftTy = mkSigmaTy alpha_tyvar [] (applyTyCon liftTyCon alpha_ty) - -liftTyCon - = pcDataTyCon liftTyConKey pREL_BASE SLIT("Lift") alpha_tyvar [liftDataCon] - -liftDataCon - = pcDataCon liftDataConKey pREL_BASE SLIT("Lift") - alpha_tyvar [] alpha_ty liftTyCon - ((pcGenerateDataSpecs alphaLiftTy) `addOneToSpecEnv` - (mkSpecInfo [Just realWorldStatePrimTy] 0 bottom)) - where - bottom = panic "liftDataCon:State# _RealWorld" -\end{code}