X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fprelude%2FTysWiredIn.lhs;h=91c068d599b88b9b8463fec6f3d5b824308144e4;hb=11673fb316209c09f81ca9715beb17c0c6191af5;hp=ce285871099336030984ecd7f4dcaf5bc1fc130d;hpb=e7d21ee4f8ac907665a7e170c71d59e13a01da09;p=ghc-hetmet.git diff --git a/ghc/compiler/prelude/TysWiredIn.lhs b/ghc/compiler/prelude/TysWiredIn.lhs index ce28587..91c068d 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} @@ -10,9 +10,9 @@ This module tracks the ``state interface'' document, ``GHC prelude: types and operations.'' \begin{code} -#include "HsVersions.h" - module TysWiredIn ( + wiredInTyCons, genericTyCons, + addrDataCon, addrTy, addrTyCon, @@ -21,204 +21,363 @@ module TysWiredIn ( charDataCon, charTy, charTyCon, - cmpTagTy, - cmpTagTyCon, consDataCon, doubleDataCon, doubleTy, + isDoubleTy, doubleTyCon, - eqPrimDataCon, - falseDataCon, + falseDataCon, falseDataConId, floatDataCon, floatTy, + isFloatTy, floatTyCon, - getStatePairingConInfo, - gtPrimDataCon, + intDataCon, intTy, intTyCon, + isIntTy, + integerTy, integerTyCon, - liftDataCon, - liftTyCon, + smallIntegerDataCon, + largeIntegerDataCon, + isIntegerTy, + listTyCon, - ltPrimDataCon, - mallocPtrTyCon, - mkLiftTy, + mkListTy, - mkPrimIoTy, - mkStateTransformerTy, - mkTupleTy, nilDataCon, - primIoTyCon, - ratioDataCon, - ratioTyCon, - rationalTy, - rationalTyCon, - realWorldStateTy, - return2GMPsTyCon, - returnIntAndGMPTyCon, - stTyCon, + + -- tuples + mkTupleTy, + tupleTyCon, tupleCon, + unitTyCon, unitDataConId, pairTyCon, + unboxedSingletonTyCon, unboxedSingletonDataCon, + unboxedPairTyCon, unboxedPairDataCon, + + -- Generics + genUnitTyCon, genUnitDataCon, + plusTyCon, inrDataCon, inlDataCon, + crossTyCon, crossDataCon, + stablePtrTyCon, - stateAndAddrPrimTyCon, - stateAndArrayPrimTyCon, - stateAndByteArrayPrimTyCon, - stateAndCharPrimTyCon, - stateAndDoublePrimTyCon, - stateAndFloatPrimTyCon, - stateAndIntPrimTyCon, - stateAndMallocPtrPrimTyCon, - stateAndMutableArrayPrimTyCon, - stateAndMutableByteArrayPrimTyCon, - stateAndPtrPrimTyCon, - stateAndStablePtrPrimTyCon, - stateAndSynchVarPrimTyCon, - stateAndWordPrimTyCon, - stateDataCon, - stateTyCon, stringTy, - stringTyCon, - trueDataCon, + trueDataCon, trueDataConId, unitTy, + voidTy, wordDataCon, wordTy, - wordTyCon + 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 + ) where -import Pretty --ToDo:rm debugging only +#include "HsVersions.h" + +import {-# SOURCE #-} MkId( mkDataConId, mkDataConWrapId ) +import {-# SOURCE #-} Generics( mkTyConGenInfo ) -import PrelFuns -- help functions, types and things +-- friends: +import PrelNames import TysPrim -import AbsUniType ( applyTyCon, mkTupleTyCon, mkSynonymTyCon, - getUniDataTyCon_maybe, mkSigmaTy, TyCon - , pprUniType --ToDo: rm debugging only - IF_ATTACK_PRAGMAS(COMMA cmpTyCon) +-- others: +import Constants ( mAX_TUPLE_SIZE ) +import Module ( Module, mkPrelModule ) +import Name ( mkWiredInTyConName, mkWiredInIdName, nameOccName ) +import OccName ( mkSrcOccFS, tcName, dataName, mkWorkerOcc, mkGenOcc1, mkGenOcc2 ) +import RdrName ( RdrName, mkPreludeQual, rdrNameOcc, rdrNameModule ) +import DataCon ( DataCon, StrictnessMark(..), mkDataCon, dataConId ) +import Var ( TyVar, tyVarKind ) +import TyCon ( TyCon, AlgTyConFlavour(..), ArgVrcs, tyConDataCons, + mkSynTyCon, mkTupleTyCon, + isUnLiftedTyCon, mkAlgTyConRep,tyConName ) -import IdInfo -import Maybes ( Maybe(..) ) -import Unique -import Util + +import BasicTypes ( Arity, RecFlag(..), EP(..), Boxity(..), isBoxed ) + +import Type ( Type, mkTyConTy, mkTyConApp, mkSigmaTy, mkTyVarTys, + mkArrowKinds, boxedTypeKind, unboxedTypeKind, + mkFunTy, mkFunTys, + splitTyConApp_maybe, repType, mkTyVarTy, + TauType, ClassContext ) +import Unique ( incrUnique, mkTupleTyConUnique, mkTupleDataConUnique ) +import PrelNames +import CmdLineOpts ( DynFlags, dopt_GlasgowExts ) +import Array +import Maybe ( fromJust ) +import FiniteMap ( lookupFM ) + +alpha_tyvar = [alphaTyVar] +alpha_ty = [alphaTy] +alpha_beta_tyvars = [alphaTyVar, betaTyVar] \end{code} + %************************************************************************ %* * -\subsection[TysWiredIn-boxed-prim]{The ``boxed primitive'' types (@Char@, @Int@, etc)} +\subsection{Wired in type constructors} %* * %************************************************************************ \begin{code} -charTy = UniData charTyCon [] - -charTyCon = pcDataTyCon charTyConKey pRELUDE_BUILTIN SLIT("Char") [] [charDataCon] -charDataCon = pcDataCon charDataConKey pRELUDE_BUILTIN SLIT("C#") [] [] [charPrimTy] charTyCon nullSpecEnv +wiredInTyCons :: [TyCon] +wiredInTyCons = data_tycons ++ tuple_tycons ++ unboxed_tuple_tycons + +data_tycons = genericTyCons ++ + [ addrTyCon + , boolTyCon + , charTyCon + , doubleTyCon + , floatTyCon + , intTyCon + , integerTyCon + , listTyCon + , wordTyCon + ] + +genericTyCons :: [TyCon] +genericTyCons = [ plusTyCon, crossTyCon, genUnitTyCon ] + + +tuple_tycons = unitTyCon : [tupleTyCon Boxed i | i <- [2..37] ] +unboxed_tuple_tycons = [tupleTyCon Unboxed i | i <- [1..37] ] \end{code} -\begin{code} -intTy = UniData intTyCon [] -intTyCon = pcDataTyCon intTyConKey pRELUDE_BUILTIN SLIT("Int") [] [intDataCon] -intDataCon = pcDataCon intDataConKey pRELUDE_BUILTIN SLIT("I#") [] [] [intPrimTy] intTyCon nullSpecEnv -\end{code} +%************************************************************************ +%* * +\subsection{mkWiredInTyCon} +%* * +%************************************************************************ \begin{code} -wordTy = UniData wordTyCon [] +pcNonRecDataTyCon = pcTyCon DataTyCon NonRecursive +pcRecDataTyCon = pcTyCon DataTyCon Recursive -wordTyCon = pcDataTyCon wordTyConKey pRELUDE_BUILTIN SLIT("_Word") [] [wordDataCon] -wordDataCon = pcDataCon wordDataConKey pRELUDE_BUILTIN SLIT("W#") [] [] [wordPrimTy] wordTyCon nullSpecEnv +pcTyCon new_or_data is_rec key rdr_name tyvars argvrcs cons + = tycon + where + tycon = mkAlgTyConRep name kind + tyvars + [] -- No context + argvrcs + cons + (length cons) + [] -- No derivings + new_or_data + is_rec + gen_info + + mod = mkPrelModule (rdrNameModule rdr_name) + occ = rdrNameOcc rdr_name + name = mkWiredInTyConName key mod occ tycon + kind = mkArrowKinds (map tyVarKind tyvars) boxedTypeKind + gen_info = mk_tc_gen_info mod key name tycon + +pcDataCon :: Unique -- DataConKey + -> RdrName -- Qualified + -> [TyVar] -> ClassContext -> [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. + +pcDataCon wrap_key rdr_name tyvars context arg_tys tycon + = data_con + where + mod = mkPrelModule (rdrNameModule rdr_name) + wrap_occ = rdrNameOcc rdr_name + + data_con = mkDataCon wrap_name + [ NotMarkedStrict | a <- arg_tys ] + [ {- no labelled fields -} ] + tyvars context [] [] arg_tys tycon work_id wrap_id + + work_occ = mkWorkerOcc wrap_occ + work_key = incrUnique wrap_key + work_name = mkWiredInIdName work_key mod work_occ work_id + work_id = mkDataConId work_name data_con + + wrap_name = mkWiredInIdName wrap_key mod wrap_occ wrap_id + wrap_id = mkDataConWrapId data_con \end{code} + +%************************************************************************ +%* * +\subsection[TysWiredIn-tuples]{The tuple types} +%* * +%************************************************************************ + \begin{code} -addrTy = UniData addrTyCon [] +tupleTyCon :: Boxity -> Arity -> TyCon +tupleTyCon boxity i | i > mAX_TUPLE_SIZE = fst (mk_tuple boxity i) -- Build one specially +tupleTyCon Boxed i = fst (boxedTupleArr ! i) +tupleTyCon Unboxed i = fst (unboxedTupleArr ! i) + +tupleCon :: Boxity -> Arity -> DataCon +tupleCon boxity i | i > mAX_TUPLE_SIZE = snd (mk_tuple boxity i) -- Build one specially +tupleCon Boxed i = snd (boxedTupleArr ! i) +tupleCon Unboxed i = snd (unboxedTupleArr ! i) + +boxedTupleArr, unboxedTupleArr :: Array Int (TyCon,DataCon) +boxedTupleArr = array (0,mAX_TUPLE_SIZE) [(i,mk_tuple Boxed i) | i <- [0..mAX_TUPLE_SIZE]] +unboxedTupleArr = array (0,mAX_TUPLE_SIZE) [(i,mk_tuple Unboxed i) | i <- [0..mAX_TUPLE_SIZE]] + +mk_tuple :: Boxity -> Int -> (TyCon,DataCon) +mk_tuple boxity arity = (tycon, tuple_con) + where + tycon = mkTupleTyCon tc_name tc_kind arity tyvars tuple_con boxity gen_info + tc_name = mkWiredInTyConName tc_uniq mod (mkSrcOccFS tcName name_str) tycon + tc_kind = mkArrowKinds (map tyVarKind tyvars) res_kind + res_kind | isBoxed boxity = boxedTypeKind + | otherwise = unboxedTypeKind + + tyvars | isBoxed boxity = take arity alphaTyVars + | otherwise = take arity openAlphaTyVars + + tuple_con = pcDataCon dc_uniq rdr_name tyvars [] tyvar_tys tycon + tyvar_tys = mkTyVarTys tyvars + (mod_name, name_str) = mkTupNameStr boxity arity + rdr_name = mkPreludeQual dataName mod_name name_str + tc_uniq = mkTupleTyConUnique boxity arity + dc_uniq = mkTupleDataConUnique boxity arity + 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 = mkWiredInIdName fn1_key mod occ_name1 id1 + name2 = mkWiredInIdName fn2_key mod occ_name2 id2 + gen_info = mkTyConGenInfo tycon name1 name2 + Just (EP id1 id2) = gen_info + +unitTyCon = tupleTyCon Boxed 0 +unitDataConId = dataConId (head (tyConDataCons unitTyCon)) + +pairTyCon = tupleTyCon Boxed 2 + +unboxedSingletonTyCon = tupleTyCon Unboxed 1 +unboxedSingletonDataCon = tupleCon Unboxed 1 + +unboxedPairTyCon = tupleTyCon Unboxed 2 +unboxedPairDataCon = tupleCon Unboxed 2 +\end{code} + +%************************************************************************ +%* * +\subsection[TysWiredIn-boxed-prim]{The ``boxed primitive'' types (@Char@, @Int@, etc)} +%* * +%************************************************************************ -addrTyCon = pcDataTyCon addrTyConKey pRELUDE_BUILTIN SLIT("_Addr") [] [addrDataCon] -addrDataCon = pcDataCon addrDataConKey pRELUDE_BUILTIN SLIT("A#") [] [] [addrPrimTy] addrTyCon nullSpecEnv +\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. +-- +-- Haskell 98 drops the definition of a Void type, so we just 'simulate' +-- voidTy using (). +voidTy = unitTy \end{code} + \begin{code} -floatTy = UniData floatTyCon [] +charTy = mkTyConTy charTyCon -floatTyCon = pcDataTyCon floatTyConKey pRELUDE_BUILTIN SLIT("Float") [] [floatDataCon] -floatDataCon = pcDataCon floatDataConKey pRELUDE_BUILTIN SLIT("F#") [] [] [floatPrimTy] floatTyCon nullSpecEnv +charTyCon = pcNonRecDataTyCon charTyConKey charTyCon_RDR [] [] [charDataCon] +charDataCon = pcDataCon charDataConKey charDataCon_RDR [] [] [charPrimTy] charTyCon + +stringTy = mkListTy charTy -- convenience only \end{code} \begin{code} -doubleTy = UniData doubleTyCon [] +intTy = mkTyConTy intTyCon + +intTyCon = pcNonRecDataTyCon intTyConKey intTyCon_RDR [] [] [intDataCon] +intDataCon = pcDataCon intDataConKey mkInt_RDR [] [] [intPrimTy] intTyCon -doubleTyCon = pcDataTyCon doubleTyConKey pRELUDE_BUILTIN SLIT("Double") [] [doubleDataCon] -doubleDataCon = pcDataCon doubleDataConKey pRELUDE_BUILTIN SLIT("D#") [] [] [doublePrimTy] doubleTyCon nullSpecEnv +isIntTy :: Type -> Bool +isIntTy = isTyCon intTyConKey \end{code} \begin{code} -mkStateTy ty = applyTyCon stateTyCon [ty] -realWorldStateTy = mkStateTy realWorldTy -- a common use -stateTyCon = pcDataTyCon stateTyConKey pRELUDE_BUILTIN SLIT("_State") [alpha_tv] [stateDataCon] -stateDataCon - = pcDataCon stateDataConKey pRELUDE_BUILTIN SLIT("S#") - [alpha_tv] [] [mkStatePrimTy alpha] stateTyCon nullSpecEnv +wordTy = mkTyConTy wordTyCon + +wordTyCon = pcNonRecDataTyCon wordTyConKey wordTyCon_RDR [] [] [wordDataCon] +wordDataCon = pcDataCon wordDataConKey wordDataCon_RDR [] [] [wordPrimTy] wordTyCon \end{code} \begin{code} -{- OLD: -byteArrayTyCon - = pcDataTyCon byteArrayTyConKey pRELUDE_ARRAY SLIT("_ByteArray") - [alpha_tv] [byteArrayDataCon] - -byteArrayDataCon - = pcDataCon byteArrayDataConKey pRELUDE_ARRAY SLIT("_ByteArray") - [alpha_tv] [] - [mkTupleTy 2 [alpha, alpha], byteArrayPrimTy] - byteArrayTyCon nullSpecEnv --} +addrTy = mkTyConTy addrTyCon + +addrTyCon = pcNonRecDataTyCon addrTyConKey addrTyCon_RDR [] [] [addrDataCon] +addrDataCon = pcDataCon addrDataConKey addrDataCon_RDR [] [] [addrPrimTy] addrTyCon + +isAddrTy :: Type -> Bool +isAddrTy = isTyCon addrTyConKey \end{code} \begin{code} -{- OLD: -mutableArrayTyCon - = pcDataTyCon mutableArrayTyConKey gLASGOW_ST SLIT("_MutableArray") - [alpha_tv, beta_tv, gamma_tv] [mutableArrayDataCon] - where - mutableArrayDataCon - = pcDataCon mutableArrayDataConKey gLASGOW_ST SLIT("_MutableArray") - [alpha_tv, beta_tv, gamma_tv] [] - [mkTupleTy 2 [beta, beta], applyTyCon mutableArrayPrimTyCon [alpha, gamma]] - mutableArrayTyCon nullSpecEnv --} +floatTy = mkTyConTy floatTyCon + +floatTyCon = pcNonRecDataTyCon floatTyConKey floatTyCon_RDR [] [] [floatDataCon] +floatDataCon = pcDataCon floatDataConKey floatDataCon_RDR [] [] [floatPrimTy] floatTyCon + +isFloatTy :: Type -> Bool +isFloatTy = isTyCon floatTyConKey \end{code} \begin{code} -{- -mutableByteArrayTyCon - = pcDataTyCon mutableByteArrayTyConKey gLASGOW_ST SLIT("_MutableByteArray") - [alpha_tv, beta_tv] [mutableByteArrayDataCon] - -mutableByteArrayDataCon - = pcDataCon mutableByteArrayDataConKey gLASGOW_ST SLIT("_MutableByteArray") - [alpha_tv, beta_tv] [] - [mkTupleTy 2 [beta, beta], mkMutableByteArrayPrimTy alpha] - mutableByteArrayTyCon nullSpecEnv --} +doubleTy = mkTyConTy doubleTyCon + +isDoubleTy :: Type -> Bool +isDoubleTy = isTyCon doubleTyConKey + +doubleTyCon = pcNonRecDataTyCon doubleTyConKey doubleTyCon_RDR [] [] [doubleDataCon] +doubleDataCon = pcDataCon doubleDataConKey doubleDataCon_RDR [] [] [doublePrimTy] doubleTyCon \end{code} \begin{code} stablePtrTyCon - = pcDataTyCon stablePtrTyConKey gLASGOW_MISC SLIT("_StablePtr") - [alpha_tv] [stablePtrDataCon] + = pcNonRecDataTyCon stablePtrTyConKey stablePtrTyCon_RDR + alpha_tyvar [(True,False)] [stablePtrDataCon] where stablePtrDataCon - = pcDataCon stablePtrDataConKey gLASGOW_MISC SLIT("_StablePtr") - [alpha_tv] [] [applyTyCon stablePtrPrimTyCon [alpha]] stablePtrTyCon nullSpecEnv + = pcDataCon stablePtrDataConKey stablePtrDataCon_RDR + alpha_tyvar [] [mkStablePtrPrimTy alphaTy] stablePtrTyCon \end{code} \begin{code} -mallocPtrTyCon - = pcDataTyCon mallocPtrTyConKey gLASGOW_MISC SLIT("_MallocPtr") - [] [mallocPtrDataCon] +foreignObjTyCon + = pcNonRecDataTyCon foreignObjTyConKey foreignObjTyCon_RDR + [] [] [foreignObjDataCon] where - mallocPtrDataCon - = pcDataCon mallocPtrDataConKey gLASGOW_MISC SLIT("_MallocPtr") - [] [] [applyTyCon mallocPtrPrimTyCon []] mallocPtrTyCon nullSpecEnv + foreignObjDataCon + = pcDataCon foreignObjDataConKey foreignObjDataCon_RDR + [] [] [foreignObjPrimTy] foreignObjTyCon + +isForeignObjTy :: Type -> Bool +isForeignObjTy = isTyCon foreignObjTyConKey \end{code} %************************************************************************ @@ -229,250 +388,122 @@ mallocPtrTyCon @Integer@ and its pals are not really primitive. @Integer@ itself, first: \begin{code} -integerTy :: UniType -integerTy = UniData integerTyCon [] - -integerTyCon = pcDataTyCon integerTyConKey pRELUDE_BUILTIN SLIT("Integer") [] [integerDataCon] - -#ifndef DPH -integerDataCon = pcDataCon integerDataConKey pRELUDE_BUILTIN SLIT("J#") - [] [] [intPrimTy, intPrimTy, byteArrayPrimTy] integerTyCon nullSpecEnv -#else --- DPH: For the time being we implement Integers in the same way as Ints. -integerDataCon = pcDataCon integerDataConKey pRELUDE_BUILTIN SLIT("J#") - [] [] [intPrimTy] integerTyCon nullSpecEnv -#endif {- Data Parallel Haskell -} -\end{code} +integerTy :: Type +integerTy = mkTyConTy integerTyCon -And the other pairing types: -\begin{code} -return2GMPsTyCon = pcDataTyCon return2GMPsTyConKey - pRELUDE_BUILTIN SLIT("_Return2GMPs") [] [return2GMPsDataCon] +integerTyCon = pcNonRecDataTyCon integerTyConKey integerTyCon_RDR + [] [] [smallIntegerDataCon, largeIntegerDataCon] -return2GMPsDataCon - = pcDataCon return2GMPsDataConKey pRELUDE_BUILTIN SLIT("_Return2GMPs") [] [] - [intPrimTy, intPrimTy, byteArrayPrimTy, - intPrimTy, intPrimTy, byteArrayPrimTy] return2GMPsTyCon nullSpecEnv +smallIntegerDataCon = pcDataCon smallIntegerDataConKey smallIntegerDataCon_RDR + [] [] [intPrimTy] integerTyCon +largeIntegerDataCon = pcDataCon largeIntegerDataConKey largeIntegerDataCon_RDR + [] [] [intPrimTy, byteArrayPrimTy] integerTyCon -returnIntAndGMPTyCon = pcDataTyCon returnIntAndGMPTyConKey - pRELUDE_BUILTIN SLIT("_ReturnIntAndGMP") [] [returnIntAndGMPDataCon] -returnIntAndGMPDataCon - = pcDataCon returnIntAndGMPDataConKey pRELUDE_BUILTIN SLIT("_ReturnIntAndGMP") [] [] - [intPrimTy, intPrimTy, intPrimTy, byteArrayPrimTy] returnIntAndGMPTyCon nullSpecEnv +isIntegerTy :: Type -> Bool +isIntegerTy = isTyCon integerTyConKey \end{code} -%************************************************************************ -%* * -\subsection[TysWiredIn-state-pairing]{``State-pairing'' 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 pRELUDE_BUILTIN SLIT("StateAndPtr#") - [alpha_tv, beta_tv] [stateAndPtrPrimDataCon] -stateAndPtrPrimDataCon - = pcDataCon stateAndPtrPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndPtr#") - [alpha_tv, beta_tv] [] [mkStatePrimTy alpha, beta] - stateAndPtrPrimTyCon nullSpecEnv - -stateAndCharPrimTyCon - = pcDataTyCon stateAndCharPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndChar#") - [alpha_tv] [stateAndCharPrimDataCon] -stateAndCharPrimDataCon - = pcDataCon stateAndCharPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndChar#") - [alpha_tv] [] [mkStatePrimTy alpha, charPrimTy] - stateAndCharPrimTyCon nullSpecEnv - -stateAndIntPrimTyCon - = pcDataTyCon stateAndIntPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndInt#") - [alpha_tv] [stateAndIntPrimDataCon] -stateAndIntPrimDataCon - = pcDataCon stateAndIntPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndInt#") - [alpha_tv] [] [mkStatePrimTy alpha, intPrimTy] - stateAndIntPrimTyCon nullSpecEnv - -stateAndWordPrimTyCon - = pcDataTyCon stateAndWordPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndWord#") - [alpha_tv] [stateAndWordPrimDataCon] -stateAndWordPrimDataCon - = pcDataCon stateAndWordPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndWord#") - [alpha_tv] [] [mkStatePrimTy alpha, wordPrimTy] - stateAndWordPrimTyCon nullSpecEnv - -stateAndAddrPrimTyCon - = pcDataTyCon stateAndAddrPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndAddr#") - [alpha_tv] [stateAndAddrPrimDataCon] -stateAndAddrPrimDataCon - = pcDataCon stateAndAddrPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndAddr#") - [alpha_tv] [] [mkStatePrimTy alpha, addrPrimTy] - stateAndAddrPrimTyCon nullSpecEnv - -stateAndStablePtrPrimTyCon - = pcDataTyCon stateAndStablePtrPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndStablePtr#") - [alpha_tv, beta_tv] [stateAndStablePtrPrimDataCon] -stateAndStablePtrPrimDataCon - = pcDataCon stateAndStablePtrPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndStablePtr#") - [alpha_tv, beta_tv] [] - [mkStatePrimTy alpha, applyTyCon stablePtrPrimTyCon [beta]] - stateAndStablePtrPrimTyCon nullSpecEnv - -stateAndMallocPtrPrimTyCon - = pcDataTyCon stateAndMallocPtrPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndMallocPtr#") - [alpha_tv] [stateAndMallocPtrPrimDataCon] -stateAndMallocPtrPrimDataCon - = pcDataCon stateAndMallocPtrPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndMallocPtr#") - [alpha_tv] [] - [mkStatePrimTy alpha, applyTyCon mallocPtrPrimTyCon []] - stateAndMallocPtrPrimTyCon nullSpecEnv - -stateAndFloatPrimTyCon - = pcDataTyCon stateAndFloatPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndFloat#") - [alpha_tv] [stateAndFloatPrimDataCon] -stateAndFloatPrimDataCon - = pcDataCon stateAndFloatPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndFloat#") - [alpha_tv] [] [mkStatePrimTy alpha, floatPrimTy] - stateAndFloatPrimTyCon nullSpecEnv - -stateAndDoublePrimTyCon - = pcDataTyCon stateAndDoublePrimTyConKey pRELUDE_BUILTIN SLIT("StateAndDouble#") - [alpha_tv] [stateAndDoublePrimDataCon] -stateAndDoublePrimDataCon - = pcDataCon stateAndDoublePrimDataConKey pRELUDE_BUILTIN SLIT("StateAndDouble#") - [alpha_tv] [] [mkStatePrimTy alpha, doublePrimTy] - stateAndDoublePrimTyCon nullSpecEnv -\end{code} - -\begin{code} -stateAndArrayPrimTyCon - = pcDataTyCon stateAndArrayPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndArray#") - [alpha_tv, beta_tv] [stateAndArrayPrimDataCon] -stateAndArrayPrimDataCon - = pcDataCon stateAndArrayPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndArray#") - [alpha_tv, beta_tv] [] [mkStatePrimTy alpha, mkArrayPrimTy beta] - stateAndArrayPrimTyCon nullSpecEnv - -stateAndMutableArrayPrimTyCon - = pcDataTyCon stateAndMutableArrayPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndMutableArray#") - [alpha_tv, beta_tv] [stateAndMutableArrayPrimDataCon] -stateAndMutableArrayPrimDataCon - = pcDataCon stateAndMutableArrayPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndMutableArray#") - [alpha_tv, beta_tv] [] [mkStatePrimTy alpha, mkMutableArrayPrimTy alpha beta] - stateAndMutableArrayPrimTyCon nullSpecEnv - -stateAndByteArrayPrimTyCon - = pcDataTyCon stateAndByteArrayPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndByteArray#") - [alpha_tv] [stateAndByteArrayPrimDataCon] -stateAndByteArrayPrimDataCon - = pcDataCon stateAndByteArrayPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndByteArray#") - [alpha_tv] [] [mkStatePrimTy alpha, byteArrayPrimTy] - stateAndByteArrayPrimTyCon nullSpecEnv - -stateAndMutableByteArrayPrimTyCon - = pcDataTyCon stateAndMutableByteArrayPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndMutableByteArray#") - [alpha_tv] [stateAndMutableByteArrayPrimDataCon] -stateAndMutableByteArrayPrimDataCon - = pcDataCon stateAndMutableByteArrayPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndMutableByteArray#") - [alpha_tv] [] [mkStatePrimTy alpha, applyTyCon mutableByteArrayPrimTyCon [alpha]] - stateAndMutableByteArrayPrimTyCon nullSpecEnv - -stateAndSynchVarPrimTyCon - = pcDataTyCon stateAndSynchVarPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndSynchVar#") - [alpha_tv, beta_tv] [stateAndSynchVarPrimDataCon] -stateAndSynchVarPrimDataCon - = pcDataCon stateAndSynchVarPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndSynchVar#") - [alpha_tv, beta_tv] [] [mkStatePrimTy alpha, mkSynchVarPrimTy alpha beta] - 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}. - -\begin{code} -getStatePairingConInfo - :: UniType -- primitive type - -> (Id, -- state pair constructor for prim type - UniType) -- type of state pair - -getStatePairingConInfo prim_ty - = case (getUniDataTyCon_maybe prim_ty) of - Nothing -> panic "getStatePairingConInfo:1" - Just (prim_tycon, tys_applied, _) -> - let - (pair_con, pair_tycon, num_tys) = assoc "getStatePairingConInfo" tbl prim_tycon - pair_ty = applyTyCon pair_tycon (realWorldTy : drop num_tys tys_applied) - 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)), - (mallocPtrPrimTyCon, (stateAndMallocPtrPrimDataCon, stateAndMallocPtrPrimTyCon, 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} +\subsection[TysWiredIn-ext-type]{External types} %* * %************************************************************************ -This is really just an ordinary synonym, except it is ABSTRACT. +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} -mkStateTransformerTy s a = applyTyCon stTyCon [s, a] - -stTyCon - = mkSynonymTyCon - stTyConKey - (mkPreludeCoreName gLASGOW_ST SLIT("_ST")) - 2 - [alpha_tv, beta_tv] - (mkStateTy alpha `UniFun` mkTupleTy 2 [beta, mkStateTy alpha]) - True -- ToDo: make... *** ABSTRACT *** +isFFIArgumentTy :: DynFlags -> Bool -> Type -> Bool +-- Checks for valid argument type for a 'foreign import' +isFFIArgumentTy dflags is_safe ty + = checkRepTyCon (legalOutgoingTyCon dflags is_safe) ty + +isFFIExternalTy :: Type -> Bool +-- Types that are allowed as arguments of a 'foreign export' +isFFIExternalTy ty = checkRepTyCon legalIncomingTyCon 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 + +isFFIDynArgumentTy :: Type -> Bool +-- The argument type of a foreign import dynamic must be either Addr, or +-- a newtype of Addr. +isFFIDynArgumentTy = checkRepTyCon (== addrTyCon) + +isFFIDynResultTy :: Type -> Bool +-- The result type of a foreign export dynamic must be either Addr, or +-- a newtype of Addr. +isFFIDynResultTy = checkRepTyCon (== addrTyCon) + +isFFILabelTy :: Type -> Bool +-- The type of a foreign label must be either Addr, or +-- a newtype of Addr. +isFFILabelTy = checkRepTyCon (== 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 + Just (tycon, _) -> check_tc tycon + Nothing -> False + +isTyCon :: Unique -> Type -> Bool +isTyCon uniq ty = checkTyCon (\tc -> uniq == getUnique tc) ty \end{code} -%************************************************************************ -%* * -\subsection[TysWiredIn-IO]{The @PrimIO@ and @IO@ monadic-I/O types} -%* * -%************************************************************************ - -@PrimIO@ and @IO@ really are just a plain synonyms. +---------------------------------------------- +These chaps do the work; they are not exported +---------------------------------------------- \begin{code} -mkPrimIoTy a = applyTyCon primIoTyCon [a] - -primIoTyCon - = mkSynonymTyCon - primIoTyConKey - (mkPreludeCoreName pRELUDE_PRIMIO SLIT("PrimIO")) - 1 - [alpha_tv] - (mkStateTransformerTy realWorldTy alpha) - True -- need not be abstract +legalIncomingTyCon :: 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 ] + = 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 +-- 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] + = False + | otherwise + = marshalableTyCon dflags tc + +marshalableTyCon dflags tc + = (dopt_GlasgowExts dflags && isUnLiftedTyCon tc) + || boxedMarshalableTyCon tc + +boxedMarshalableTyCon tc + = getUnique tc `elem` [ intTyConKey, int8TyConKey, int16TyConKey, int32TyConKey, int64TyConKey + , wordTyConKey, word8TyConKey, word16TyConKey, word32TyConKey, word64TyConKey + , floatTyConKey, doubleTyConKey + , addrTyConKey, charTyConKey, foreignObjTyConKey + , stablePtrTyConKey + , byteArrayTyConKey, mutableByteArrayTyConKey + , boolTyConKey + ] \end{code} + %************************************************************************ %* * \subsection[TysWiredIn-Bool]{The @Bool@ type} @@ -522,33 +553,16 @@ primitive counterpart. {\em END IDLE SPECULATION BY SIMON} \begin{code} -boolTy = UniData boolTyCon [] +boolTy = mkTyConTy boolTyCon -boolTyCon = pcDataTyCon boolTyConKey pRELUDE_CORE SLIT("Bool") [] [falseDataCon, trueDataCon] +boolTyCon = pcTyCon EnumTyCon NonRecursive boolTyConKey + boolTyCon_RDR [] [] [falseDataCon, trueDataCon] -falseDataCon = pcDataCon falseDataConKey pRELUDE_CORE SLIT("False") [] [] [] boolTyCon nullSpecEnv -trueDataCon = pcDataCon trueDataConKey pRELUDE_CORE SLIT("True") [] [] [] boolTyCon nullSpecEnv -\end{code} +falseDataCon = pcDataCon falseDataConKey false_RDR [] [] [] boolTyCon +trueDataCon = pcDataCon trueDataConKey true_RDR [] [] [] boolTyCon -%************************************************************************ -%* * -\subsection[TysWiredIn-CMP-TAG]{The @CMP_TAG#@ type (for fast `derived' comparisons)} -%* * -%************************************************************************ - -\begin{code} ---------------------------------------------- --- data _CMP_TAG = _LT | _EQ | _GT deriving () ---------------------------------------------- - -cmpTagTy = UniData cmpTagTyCon [] - -cmpTagTyCon = pcDataTyCon cmpTagTyConKey pRELUDE_BUILTIN SLIT("_CMP_TAG") [] - [ltPrimDataCon, eqPrimDataCon, gtPrimDataCon] - -ltPrimDataCon = pcDataCon ltTagDataConKey pRELUDE_BUILTIN SLIT("_LT") [] [] [] cmpTagTyCon nullSpecEnv -eqPrimDataCon = pcDataCon eqTagDataConKey pRELUDE_BUILTIN SLIT("_EQ") [] [] [] cmpTagTyCon nullSpecEnv -gtPrimDataCon = pcDataCon gtTagDataConKey pRELUDE_BUILTIN SLIT("_GT") [] [] [] cmpTagTyCon nullSpecEnv +falseDataConId = dataConId falseDataCon +trueDataConId = dataConId trueDataCon \end{code} %************************************************************************ @@ -558,38 +572,29 @@ gtPrimDataCon = pcDataCon gtTagDataConKey pRELUDE_BUILTIN SLIT("_GT") [] [] [] %************************************************************************ Special syntax, deeply wired in, but otherwise an ordinary algebraic -data type: +data types: \begin{verbatim} -data List a = Nil | a : (List a) +data [] a = [] | a : (List a) +data () = () +data (,) a b = (,,) a b +... \end{verbatim} \begin{code} -mkListTy :: UniType -> UniType -mkListTy ty = UniData listTyCon [ty] - -alphaListTy = mkSigmaTy [alpha_tv] [] (mkListTy alpha) +mkListTy :: Type -> Type +mkListTy ty = mkTyConApp listTyCon [ty] -listTyCon = pcDataTyCon listTyConKey pRELUDE_BUILTIN SLIT("List") [alpha_tv] [nilDataCon, consDataCon] +alphaListTy = mkSigmaTy alpha_tyvar [] (mkTyConApp listTyCon alpha_ty) -nilDataCon = pcDataCon nilDataConKey pRELUDE_BUILTIN SLIT("Nil") [alpha_tv] [] [] listTyCon - (pcGenerateDataSpecs alphaListTy) -consDataCon = pcDataCon consDataConKey pRELUDE_BUILTIN SLIT(":") - [alpha_tv] [] [alpha, mkListTy alpha] listTyCon - (pcGenerateDataSpecs alphaListTy) -\end{code} +listTyCon = pcRecDataTyCon listTyConKey listTyCon_RDR + alpha_tyvar [(True,False)] [nilDataCon, consDataCon] -This is the @_Build@ data constructor, it does {\em not} appear inside -listTyCon. It has this type: \tr{((a -> b -> b) -> b -> b) -> [a]}. -\begin{code} -{- NOT USED: -buildDataCon - = pcDataCon buildDataConKey pRELUDE_BUILTIN "Build" - [alpha_tv] [] [ - mkSigmaTy [beta_tv] [] - ((alpha `UniFun` (beta `UniFun` beta)) - `UniFun` (beta - `UniFun` beta))] listTyCon nullSpecEnv --} +nilDataCon = pcDataCon nilDataConKey nil_RDR alpha_tyvar [] [] listTyCon +consDataCon = pcDataCon consDataConKey cons_RDR + 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) \end{code} %************************************************************************ @@ -603,14 +608,12 @@ family. \begin{itemize} \item -They have a special family of type constructors, of type -@TyCon@\srcloc{uniType/TyCon.lhs}. +They have a special family of type constructors, of type @TyCon@ These contain the tycon arity, but don't require a Unique. \item They have a special family of constructors, of type -@Id@\srcloc{basicTypes/Id.lhs}. Again these contain their arity but -don't need a Unique. +@Id@. Again these contain their arity but don't need a Unique. \item There should be a magic way of generating the info tables and @@ -641,117 +644,48 @@ done by enumeration\srcloc{lib/prelude/InTup?.hs}. \end{itemize} \begin{code} -mkTupleTy :: Int -> [UniType] -> UniType +mkTupleTy :: Boxity -> Int -> [Type] -> Type +mkTupleTy boxity arity tys = mkTyConApp (tupleTyCon boxity arity) tys -mkTupleTy arity tys = applyTyCon (mkTupleTyCon arity) tys - -unitTy = mkTupleTy 0 [] +unitTy = mkTupleTy Boxed 0 [] \end{code} %************************************************************************ -%* * -\subsection[TysWiredIn-Ratios]{@Ratio@ and @Rational@} -%* * +%* * +\subsection{Wired In Type Constructors for Representation Types} +%* * %************************************************************************ -ToDo: make this (mostly) go away. - -\begin{code} -rationalTy :: UniType - -mkRatioTy ty = UniData ratioTyCon [ty] -rationalTy = mkRatioTy integerTy +The following code defines the wired in datatypes cross, plus, unit +and c_of needed for the generic methods. -ratioTyCon = pcDataTyCon ratioTyConKey pRELUDE_RATIO SLIT("Ratio") [alpha_tv] [ratioDataCon] - -ratioDataCon = pcDataCon ratioDataConKey pRELUDE_RATIO SLIT(":%") - [alpha_tv] [{-(integralClass,alpha)-}] [alpha, alpha] ratioTyCon nullSpecEnv - -- context omitted to match lib/prelude/ defn of "data Ratio ..." - -rationalTyCon - = mkSynonymTyCon - rationalTyConKey - (mkPreludeCoreName pRELUDE_RATIO SLIT("Rational")) - 0 -- arity - [] -- tyvars - rationalTy -- == mkRatioTy integerTy - True -- unabstract -\end{code} - -%************************************************************************ -%* * -\subsection[TysWiredIn-_Lift]{@_Lift@ type: to support array indexing} -%* * -%************************************************************************ - -Again, deeply turgid: \tr{data _Lift a = _Lift a}. +Ok, so the basic story is that for each type constructor I need to +create 2 things - a TyCon and a DataCon and then we are basically +ok. There are going to be no arguments passed to these functions +because -well- there is nothing to pass to these functions. \begin{code} -mkLiftTy ty = applyTyCon liftTyCon [ty] - -{- -mkLiftTy ty - = mkSigmaTy tvs theta (UniData liftTyCon [tau]) - where - (tvs, theta, tau) = splitType ty +crossTyCon :: TyCon +crossTyCon = pcNonRecDataTyCon crossTyConKey crossTyCon_RDR alpha_beta_tyvars [] [crossDataCon] -isLiftTy ty - = case getUniDataTyCon_maybe tau of - Just (tycon, tys, _) -> tycon == liftTyCon - Nothing -> False - where - (tvs, theta, tau) = splitType ty --} +crossDataCon :: DataCon +crossDataCon = pcDataCon crossDataConKey crossDataCon_RDR alpha_beta_tyvars [] [alphaTy, betaTy] crossTyCon +plusTyCon :: TyCon +plusTyCon = pcNonRecDataTyCon plusTyConKey plusTyCon_RDR alpha_beta_tyvars [] [inlDataCon, inrDataCon] -alphaLiftTy = mkSigmaTy [alpha_tv] [] (UniData liftTyCon [alpha]) +inlDataCon, inrDataCon :: DataCon +inlDataCon = pcDataCon inlDataConKey inlDataCon_RDR alpha_beta_tyvars [] [alphaTy] plusTyCon +inrDataCon = pcDataCon inrDataConKey inrDataCon_RDR alpha_beta_tyvars [] [betaTy] plusTyCon -liftTyCon - = pcDataTyCon liftTyConKey pRELUDE_BUILTIN SLIT("_Lift") [alpha_tv] [liftDataCon] +genUnitTyCon :: TyCon -- The "1" type constructor for generics +genUnitTyCon = pcNonRecDataTyCon genUnitTyConKey genUnitTyCon_RDR [] [] [genUnitDataCon] -liftDataCon - = pcDataCon liftDataConKey pRELUDE_BUILTIN SLIT("_Lift") - [alpha_tv] [] [alpha] liftTyCon - ((pcGenerateDataSpecs alphaLiftTy) `addOneToSpecEnv` - (SpecInfo [Just realWorldStatePrimTy] 0 bottom)) - where - bottom = panic "liftDataCon:State# _RealWorld" +genUnitDataCon :: DataCon +genUnitDataCon = pcDataCon genUnitDataConKey genUnitDataCon_RDR [] [] [] genUnitTyCon \end{code} -%************************************************************************ -%* * -\subsection[TysWiredIn-for-convenience]{Types wired in for convenience (e.g., @String@)} -%* * -%************************************************************************ -\begin{code} -stringTy = mkListTy charTy - -stringTyCon - = mkSynonymTyCon - stringTyConKey - (mkPreludeCoreName pRELUDE_CORE SLIT("String")) - 0 - [] -- type variables - stringTy - True -- unabstract -\end{code} -\begin{code} -{- UNUSED: -packedStringTy = applyTyCon packedStringTyCon [] -packedStringTyCon - = pcDataTyCon packedStringTyConKey pRELUDE_PS SLIT("_PackedString") [] - [psDataCon, cpsDataCon] - -psDataCon - = pcDataCon psDataConKey pRELUDE_PS SLIT("_PS") - [] [] [intPrimTy, byteArrayPrimTy] packedStringTyCon - -cpsDataCon - = pcDataCon cpsDataConKey pRELUDE_PS SLIT("_CPS") - [] [] [addrPrimTy] packedStringTyCon --} -\end{code}