X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fprelude%2FTysWiredIn.lhs;h=ade3426f96604882ae5aceb3e87df0b9c38c5d2c;hb=10fcd78ccde892feccda3f5eacd221c1de75feea;hp=59241ac37dfbe1f2dfa29ecf664d7d1b4e40c3c3;hpb=ce1a26945eefbf58eb020cf8c4464094eebb5d9e;p=ghc-hetmet.git diff --git a/ghc/compiler/prelude/TysWiredIn.lhs b/ghc/compiler/prelude/TysWiredIn.lhs index 59241ac..ade3426 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} @@ -10,12 +10,18 @@ This module tracks the ``state interface'' document, ``GHC prelude: types and operations.'' \begin{code} -#include "HsVersions.h" - module TysWiredIn ( + wiredInTyCons, genericTyCons, + addrDataCon, addrTy, addrTyCon, + ptrDataCon, + ptrTy, + ptrTyCon, + funPtrDataCon, + funPtrTy, + funPtrTyCon, boolTy, boolTyCon, charDataCon, @@ -25,140 +31,191 @@ module TysWiredIn ( doubleDataCon, doubleTy, doubleTyCon, - falseDataCon, + falseDataCon, falseDataConId, floatDataCon, floatTy, floatTyCon, - getStatePairingConInfo, + intDataCon, intTy, intTyCon, + integerTy, integerTyCon, - integerDataCon, - liftDataCon, - liftTyCon, + smallIntegerDataCon, + largeIntegerDataCon, + listTyCon, - foreignObjTyCon, - mkLiftTy, + mkListTy, - mkPrimIoTy, - mkStateTy, - mkStateTransformerTy, - tupleTyCon, tupleCon, unitTyCon, unitDataCon, pairTyCon, pairDataCon, - mkTupleTy, nilDataCon, - primIoTyCon, - realWorldStateTy, - return2GMPsTyCon, - returnIntAndGMPTyCon, - stTyCon, - stDataCon, + + -- 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, - stateAndForeignObjPrimTyCon, - stateAndMutableArrayPrimTyCon, - stateAndMutableByteArrayPrimTyCon, - stateAndPtrPrimTyCon, - stateAndStablePtrPrimTyCon, - stateAndSynchVarPrimTyCon, - stateAndWordPrimTyCon, - stateDataCon, - stateTyCon, stringTy, - trueDataCon, + trueDataCon, trueDataConId, unitTy, + voidTy, wordDataCon, wordTy, - wordTyCon + wordTyCon, + + -- parallel arrays + mkPArrTy, + parrTyCon, parrFakeCon, isPArrTyCon, isPArrFakeCon ) where ---ToDo:rm ---import Pretty ---import Util ---import PprType ---import Kind +#include "HsVersions.h" -IMP_Ubiq() -IMPORT_DELOOPER(TyLoop) --( mkDataCon, mkTupleCon, StrictnessMark(..) ) -IMPORT_DELOOPER(IdLoop) ( SpecEnv, nullSpecEnv, - mkTupleCon, mkDataCon, - StrictnessMark(..) ) +import {-# SOURCE #-} MkId( mkDataConId, mkDataConWrapId ) +import {-# SOURCE #-} Generics( mkTyConGenInfo ) -- friends: -import PrelMods +import PrelNames import TysPrim -- others: -import Kind ( mkBoxedTypeKind, mkArrowKind ) -import Name --( mkWiredInTyConName, mkWiredInIdName, mkTupNameStr ) -import TyCon ( mkDataTyCon, mkTupleTyCon, mkSynTyCon, - TyCon, SYN_IE(Arity) +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, mkDataCon, dataConId, dataConSourceArity ) +import Var ( TyVar, tyVarKind ) +import TyCon ( TyCon, AlgTyConFlavour(..), tyConDataCons, + mkTupleTyCon, mkAlgTyCon, tyConName ) -import BasicTypes ( NewOrData(..) ) -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 Unique -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 BasicTypes ( Arity, RecFlag(..), Boxity(..), isBoxed, StrictnessMark(..) ) + +import Type ( Type, mkTyConTy, mkTyConApp, mkTyVarTy, mkTyVarTys, + mkArrowKinds, liftedTypeKind, unliftedTypeKind, + ThetaType ) +import Unique ( incrUnique, mkTupleTyConUnique, + mkTupleDataConUnique, mkPArrDataConUnique ) +import PrelNames +import Array alpha_tyvar = [alphaTyVar] alpha_ty = [alphaTy] alpha_beta_tyvars = [alphaTyVar, betaTyVar] +\end{code} + + +%************************************************************************ +%* * +\subsection{Wired in type constructors} +%* * +%************************************************************************ -pcDataTyCon, pcNewTyCon - :: Unique{-TyConKey-} -> Module -> FAST_STRING - -> [TyVar] -> [Id] -> TyCon +\begin{code} +wiredInTyCons :: [TyCon] +wiredInTyCons = data_tycons ++ tuple_tycons ++ unboxed_tuple_tycons + +data_tycons = genericTyCons ++ + [ addrTyCon + , ptrTyCon + , funPtrTyCon + , boolTyCon + , charTyCon + , doubleTyCon + , floatTyCon + , intTyCon + , integerTyCon + , listTyCon + , parrTyCon + , wordTyCon + ] + +genericTyCons :: [TyCon] +genericTyCons = [ plusTyCon, crossTyCon, genUnitTyCon ] + + +tuple_tycons = unitTyCon : [tupleTyCon Boxed i | i <- [2..mAX_TUPLE_SIZE] ] +unboxed_tuple_tycons = [tupleTyCon Unboxed i | i <- [1..mAX_TUPLE_SIZE] ] +\end{code} -pcDataTyCon = pc_tycon DataType -pcNewTyCon = pc_tycon NewType -pc_tycon new_or_data key mod str tyvars cons - = tycon - where - tycon = mkDataTyCon name tycon_kind - tyvars [{-no context-}] cons [{-no derivings-}] - new_or_data - name = mkWiredInTyConName key mod str tycon - tycon_kind = foldr (mkArrowKind . tyVarKind) mkBoxedTypeKind tyvars +%************************************************************************ +%* * +\subsection{mkWiredInTyCon} +%* * +%************************************************************************ + +\begin{code} +pcNonRecDataTyCon = pcTyCon DataTyCon NonRecursive +pcRecDataTyCon = pcTyCon DataTyCon Recursive -pcSynTyCon key mod str kind arity tyvars expansion +pcTyCon new_or_data is_rec name tyvars argvrcs cons = tycon where - tycon = mkSynTyCon name 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 - = data_con + tycon = mkAlgTyCon name kind + tyvars + [] -- No context + argvrcs + cons + (length cons) + [] -- No record selectors + new_or_data + is_rec + gen_info + + mod = nameModule name + kind = mkArrowKinds (map tyVarKind tyvars) liftedTypeKind + gen_info = mk_tc_gen_info mod (nameUnique name) name tycon + +-- 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 - 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 + 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 -> [Type] -> 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 name tyvars context arg_tys tycon + = data_con where - err = panic "PrelUtils:GenerateDataSpecs" + data_con = mkDataCon name + [ NotMarkedStrict | a <- arg_tys ] + [ {- no labelled fields -} ] + tyvars context [] [] arg_tys tycon work_id wrap_id + + wrap_rdr = nameRdrName name + wrap_occ = rdrNameOcc wrap_rdr + + mod = nameModule name + wrap_id = mkDataConWrapId data_con + + work_occ = mkWorkerOcc wrap_occ + work_key = incrUnique (nameUnique name) + work_name = mkWiredInName mod work_occ work_key + work_id = mkDataConId work_name data_con \end{code} + %************************************************************************ %* * \subsection[TysWiredIn-tuples]{The tuple types} @@ -166,38 +223,53 @@ pcGenerateDataSpecs ty %************************************************************************ \begin{code} -tupleTyCon :: Arity -> TyCon -tupleTyCon arity - = tycon +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 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 - 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 - -unitTyCon = tupleTyCon 0 -pairTyCon = tupleTyCon 2 - -unitDataCon = tupleCon 0 -pairDataCon = tupleCon 2 + 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 = liftedTypeKind + | otherwise = unliftedTypeKind + + tyvars | isBoxed boxity = take arity alphaTyVars + | otherwise = take arity openAlphaTyVars + + tuple_con = pcDataCon name tyvars [] tyvar_tys tycon + tyvar_tys = mkTyVarTys tyvars + (mod_name, name_str) = mkTupNameStr boxity arity + name = mkWiredInName mod (mkOccFS dataName name_str) dc_uniq + 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 + +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)} @@ -205,10 +277,26 @@ 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 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' +-- voidTy using (). +voidTy = unitTy +\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 charTyConName [] [] [charDataCon] +charDataCon = pcDataCon charDataConName [] [] [charPrimTy] charTyCon stringTy = mkListTy charTy -- convenience only \end{code} @@ -216,306 +304,102 @@ 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 intTyConName [] [] [intDataCon] +intDataCon = pcDataCon intDataConName [] [] [intPrimTy] intTyCon \end{code} \begin{code} wordTy = mkTyConTy wordTyCon -wordTyCon = pcDataTyCon wordTyConKey fOREIGN SLIT("Word") [] [wordDataCon] -wordDataCon = pcDataCon wordDataConKey fOREIGN SLIT("W#") [] [] [wordPrimTy] wordTyCon nullSpecEnv +wordTyCon = pcNonRecDataTyCon wordTyConName [] [] [wordDataCon] +wordDataCon = pcDataCon wordDataConName [] [] [wordPrimTy] wordTyCon \end{code} \begin{code} addrTy = mkTyConTy addrTyCon -addrTyCon = pcDataTyCon addrTyConKey fOREIGN SLIT("Addr") [] [addrDataCon] -addrDataCon = pcDataCon addrDataConKey fOREIGN SLIT("A#") [] [] [addrPrimTy] addrTyCon nullSpecEnv +addrTyCon = pcNonRecDataTyCon addrTyConName [] [] [addrDataCon] +addrDataCon = pcDataCon addrDataConName [] [] [addrPrimTy] addrTyCon \end{code} \begin{code} -floatTy = mkTyConTy floatTyCon +ptrTy = mkTyConTy ptrTyCon -floatTyCon = pcDataTyCon floatTyConKey pREL_BASE SLIT("Float") [] [floatDataCon] -floatDataCon = pcDataCon floatDataConKey pREL_BASE SLIT("F#") [] [] [floatPrimTy] floatTyCon nullSpecEnv +ptrTyCon = pcNonRecDataTyCon ptrTyConName alpha_tyvar [(True,False)] [ptrDataCon] +ptrDataCon = pcDataCon ptrDataConName alpha_tyvar [] [addrPrimTy] ptrTyCon \end{code} \begin{code} -doubleTy = mkTyConTy doubleTyCon +funPtrTy = mkTyConTy funPtrTyCon + +funPtrTyCon = pcNonRecDataTyCon funPtrTyConName alpha_tyvar [(True,False)] [funPtrDataCon] +funPtrDataCon = pcDataCon funPtrDataConName alpha_tyvar [] [addrPrimTy] funPtrTyCon +\end{code} -doubleTyCon = pcDataTyCon doubleTyConKey pREL_BASE SLIT("Double") [] [doubleDataCon] -doubleDataCon = pcDataCon doubleDataConKey pREL_BASE SLIT("D#") [] [] [doublePrimTy] doubleTyCon nullSpecEnv +\begin{code} +floatTy = mkTyConTy floatTyCon + +floatTyCon = pcNonRecDataTyCon floatTyConName [] [] [floatDataCon] +floatDataCon = pcDataCon floatDataConName [] [] [floatPrimTy] floatTyCon \end{code} \begin{code} -mkStateTy ty = applyTyCon stateTyCon [ty] -realWorldStateTy = mkStateTy realWorldTy -- a common use +doubleTy = mkTyConTy doubleTyCon -stateTyCon = pcDataTyCon stateTyConKey sT_BASE SLIT("State") alpha_tyvar [stateDataCon] -stateDataCon - = pcDataCon stateDataConKey sT_BASE SLIT("S#") - alpha_tyvar [] [mkStatePrimTy alphaTy] stateTyCon nullSpecEnv +doubleTyCon = pcNonRecDataTyCon doubleTyConName [] [] [doubleDataCon] +doubleDataCon = pcDataCon doubleDataConName [] [] [doublePrimTy] doubleTyCon \end{code} \begin{code} stablePtrTyCon - = pcDataTyCon stablePtrTyConKey fOREIGN SLIT("StablePtr") - alpha_tyvar [stablePtrDataCon] + = pcNonRecDataTyCon stablePtrTyConName + alpha_tyvar [(True,False)] [stablePtrDataCon] where stablePtrDataCon - = pcDataCon stablePtrDataConKey fOREIGN SLIT("StablePtr") - alpha_tyvar [] [mkStablePtrPrimTy alphaTy] stablePtrTyCon nullSpecEnv + = pcDataCon stablePtrDataConName + alpha_tyvar [] [mkStablePtrPrimTy alphaTy] stablePtrTyCon \end{code} \begin{code} foreignObjTyCon - = pcDataTyCon foreignObjTyConKey fOREIGN SLIT("ForeignObj") - [] [foreignObjDataCon] + = pcNonRecDataTyCon foreignObjTyConName + [] [] [foreignObjDataCon] where foreignObjDataCon - = pcDataCon foreignObjDataConKey fOREIGN SLIT("ForeignObj") - [] [] [foreignObjPrimTy] foreignObjTyCon nullSpecEnv -\end{code} - -%************************************************************************ -%* * -\subsection[TysWiredIn-Integer]{@Integer@ and its related ``pairing'' types} -%* * -%************************************************************************ - -@Integer@ and its pals are not really primitive. @Integer@ itself, first: -\begin{code} -integerTy :: GenType t u -integerTy = mkTyConTy integerTyCon - -integerTyCon = pcDataTyCon 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] - -returnIntAndGMPDataCon - = pcDataCon returnIntAndGMPDataConKey pREL_NUM SLIT("ReturnIntAndGMP") [] [] - [intPrimTy, intPrimTy, intPrimTy, byteArrayPrimTy] returnIntAndGMPTyCon nullSpecEnv -\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 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 + = pcDataCon foreignObjDataConName + [] [] [foreignObjPrimTy] foreignObjTyCon \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 - :: 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) -> - 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) +foreignPtrTyCon + = pcNonRecDataTyCon foreignPtrTyConName + alpha_tyvar [(True,False)] [foreignPtrDataCon] 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)), - ] + foreignPtrDataCon + = pcDataCon foreignPtrDataConName + alpha_tyvar [] [foreignObjPrimTy] foreignPtrTyCon \end{code} %************************************************************************ %* * -\subsection[TysWiredIn-ST]{The basic @_ST@ state-transformer type} +\subsection[TysWiredIn-Integer]{@Integer@ and its related ``pairing'' types} %* * %************************************************************************ -This is really just an ordinary synonym, except it is ABSTRACT. - +@Integer@ and its pals are not really primitive. @Integer@ itself, first: \begin{code} -mkStateTransformerTy s a = applyTyCon stTyCon [s, a] +integerTy :: Type +integerTy = mkTyConTy integerTyCon -stTyCon = pcNewTyCon stTyConKey sT_BASE SLIT("ST") alpha_beta_tyvars [stDataCon] +integerTyCon = pcNonRecDataTyCon integerTyConName + [] [] [smallIntegerDataCon, largeIntegerDataCon] -stDataCon = pcDataCon stDataConKey sT_BASE SLIT("ST") - alpha_beta_tyvars [] [ty] stTyCon nullSpecEnv - where - ty = mkFunTy (mkStateTy alphaTy) (mkTupleTy 2 [betaTy, mkStateTy alphaTy]) +smallIntegerDataCon = pcDataCon smallIntegerDataConName + [] [] [intPrimTy] integerTyCon +largeIntegerDataCon = pcDataCon largeIntegerDataConName + [] [] [intPrimTy, byteArrayPrimTy] integerTyCon \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) -\end{code} %************************************************************************ %* * @@ -568,10 +452,14 @@ primitive counterpart. \begin{code} boolTy = mkTyConTy boolTyCon -boolTyCon = pcDataTyCon boolTyConKey pREL_BASE SLIT("Bool") [] [falseDataCon, trueDataCon] +boolTyCon = pcTyCon EnumTyCon NonRecursive boolTyConName + [] [] [falseDataCon, trueDataCon] + +falseDataCon = pcDataCon falseDataConName [] [] [] boolTyCon +trueDataCon = pcDataCon trueDataConName [] [] [] boolTyCon -falseDataCon = pcDataCon falseDataConKey pREL_BASE SLIT("False") [] [] [] boolTyCon nullSpecEnv -trueDataCon = pcDataCon trueDataConKey pREL_BASE SLIT("True") [] [] [] boolTyCon nullSpecEnv +falseDataConId = dataConId falseDataCon +trueDataConId = dataConId trueDataCon \end{code} %************************************************************************ @@ -590,19 +478,15 @@ data (,) a b = (,,) a b \end{verbatim} \begin{code} -mkListTy :: GenType t u -> GenType t u -mkListTy ty = applyTyCon listTyCon [ty] +mkListTy :: Type -> Type +mkListTy ty = mkTyConApp listTyCon [ty] -alphaListTy = mkSigmaTy alpha_tyvar [] (applyTyCon listTyCon alpha_ty) +listTyCon = pcRecDataTyCon listTyConName + alpha_tyvar [(True,False)] [nilDataCon, consDataCon] -listTyCon = pcDataTyCon 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) +nilDataCon = pcDataCon nilDataConName alpha_tyvar [] [] listTyCon +consDataCon = pcDataCon consDataConName + 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) @@ -655,49 +539,137 @@ done by enumeration\srcloc{lib/prelude/InTup?.hs}. \end{itemize} \begin{code} -mkTupleTy :: Int -> [GenType t u] -> GenType t u - -mkTupleTy arity tys = applyTyCon (tupleTyCon arity) tys +mkTupleTy :: Boxity -> Int -> [Type] -> Type +mkTupleTy boxity arity tys = mkTyConApp (tupleTyCon boxity arity) tys -unitTy = mkTupleTy 0 [] +unitTy = mkTupleTy Boxed 0 [] \end{code} %************************************************************************ %* * -\subsection[TysWiredIn-_Lift]{@_Lift@ type: to support array indexing} +\subsection[TysWiredIn-PArr]{The @[::]@ type} %* * %************************************************************************ -Again, deeply turgid: \tr{data _Lift a = _Lift a}. +Special syntax for parallel arrays needs some wired in definitions. \begin{code} -mkLiftTy ty = applyTyCon liftTyCon [ty] - -{- -mkLiftTy ty - = mkSigmaTy tvs theta (applyTyCon liftTyCon [tau]) +-- construct a type representing the application of the parallel array +-- constructor +-- +mkPArrTy :: Type -> Type +mkPArrTy ty = mkTyConApp parrTyCon [ty] + +-- represents the type constructor of parallel arrays +-- +-- * this must match the definition in `PrelPArr' +-- +-- NB: Although the constructor is given here, it will not be accessible in +-- user code as it is not in the environment of any compiled module except +-- `PrelPArr'. +-- +parrTyCon :: TyCon +parrTyCon = tycon where - (tvs, theta, tau) = splitSigmaTy ty - -isLiftTy ty - = case (maybeAppDataTyConExpandingDicts tau) of - Just (tycon, tys, _) -> tycon == liftTyCon - Nothing -> False + tycon = mkAlgTyCon + parrTyConName + kind + tyvars + [] -- No context + [(True, False)] + [parrDataCon] -- The constructor defined in `PrelPArr' + 1 -- The real definition has one constructor + [] -- No record selectors + DataTyCon + NonRecursive + genInfo + tyvars = alpha_tyvar + mod = nameModule parrTyConName + kind = mkArrowKinds (map tyVarKind tyvars) liftedTypeKind + genInfo = mk_tc_gen_info mod (nameUnique parrTyConName) parrTyConName tycon + +parrDataCon :: DataCon +parrDataCon = pcDataCon + parrDataConName + alpha_tyvar -- forall'ed type variables + [] -- context + [intPrimTy, -- 1st argument: Int# + mkTyConApp -- 2nd argument: Array# a + arrayPrimTyCon + alpha_ty] + parrTyCon + +-- check whether a type constructor is the constructor for parallel arrays +-- +isPArrTyCon :: TyCon -> Bool +isPArrTyCon tc = tyConName tc == parrTyConName + +-- fake array constructors +-- +-- * these constructors are never really used to represent array values; +-- however, they are very convenient during desugaring (and, in particular, +-- in the pattern matching compiler) to treat array pattern just like +-- yet another constructor pattern +-- +parrFakeCon :: Arity -> DataCon +parrFakeCon i | i > mAX_TUPLE_SIZE = mkPArrFakeCon i -- build one specially +parrFakeCon i = parrFakeConArr!i + +-- pre-defined set of constructors +-- +parrFakeConArr :: Array Int DataCon +parrFakeConArr = array (0, mAX_TUPLE_SIZE) [(i, mkPArrFakeCon i) + | i <- [0..mAX_TUPLE_SIZE]] + +-- build a fake parallel array constructor for the given arity +-- +mkPArrFakeCon :: Int -> DataCon +mkPArrFakeCon arity = pcDataCon name [tyvar] [] tyvarTys parrTyCon where - (tvs, theta, tau) = splitSigmaTy ty --} + tyvar = head alphaTyVars + tyvarTys = replicate arity $ mkTyVarTy tyvar + nameStr = _PK_ ("MkPArr" ++ show arity) + name = mkWiredInName mod (mkOccFS dataName nameStr) uniq + uniq = mkPArrDataConUnique arity + mod = mkPrelModule pREL_PARR_Name + +-- checks whether a data constructor is a fake constructor for parallel arrays +-- +isPArrFakeCon :: DataCon -> Bool +isPArrFakeCon dcon = dcon == parrFakeCon (dataConSourceArity dcon) +\end{code} + +%************************************************************************ +%* * +\subsection{Wired In Type Constructors for Representation Types} +%* * +%************************************************************************ + +The following code defines the wired in datatypes cross, plus, unit +and c_of needed for the generic methods. +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. -alphaLiftTy = mkSigmaTy alpha_tyvar [] (applyTyCon liftTyCon alpha_ty) +\begin{code} +crossTyCon :: TyCon +crossTyCon = pcNonRecDataTyCon crossTyConName alpha_beta_tyvars [] [crossDataCon] -liftTyCon - = pcDataTyCon liftTyConKey pREL_BASE SLIT("Lift") alpha_tyvar [liftDataCon] +crossDataCon :: DataCon +crossDataCon = pcDataCon crossDataConName alpha_beta_tyvars [] [alphaTy, betaTy] crossTyCon -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" +plusTyCon :: TyCon +plusTyCon = pcNonRecDataTyCon plusTyConName alpha_beta_tyvars [] [inlDataCon, inrDataCon] + +inlDataCon, inrDataCon :: DataCon +inlDataCon = pcDataCon inlDataConName alpha_beta_tyvars [] [alphaTy] plusTyCon +inrDataCon = pcDataCon inrDataConName alpha_beta_tyvars [] [betaTy] plusTyCon + +genUnitTyCon :: TyCon -- The "1" type constructor for generics +genUnitTyCon = pcNonRecDataTyCon genUnitTyConName [] [] [genUnitDataCon] + +genUnitDataCon :: DataCon +genUnitDataCon = pcDataCon genUnitDataConName [] [] [] genUnitTyCon \end{code}