%
-% (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}
types and operations.''
\begin{code}
-#include "HsVersions.h"
-
module TysWiredIn (
- addrDataCon,
- addrTy,
- addrTyCon,
- boolTy,
- boolTyCon,
- charDataCon,
- charTy,
- charTyCon,
- consDataCon,
- doubleDataCon,
- doubleTy,
- doubleTyCon,
- eqDataCon,
- falseDataCon,
- floatDataCon,
- floatTy,
- floatTyCon,
- getStatePairingConInfo,
- gtDataCon,
- intDataCon,
+ wiredInTyCons,
+
+ boolTy, boolTyCon, boolTyCon_RDR, boolTyConName,
+ trueDataCon, trueDataConId, true_RDR,
+ falseDataCon, falseDataConId, false_RDR,
+
+ charTyCon, charDataCon, charTyCon_RDR,
+ charTy, stringTy, charTyConName,
+
+
+ doubleTyCon, doubleDataCon, doubleTy,
+
+ floatTyCon, floatDataCon, floatTy,
+
+ intTyCon, intDataCon, intTyCon_RDR, intDataCon_RDR, intTyConName,
intTy,
- intTyCon,
- integerTy,
- integerTyCon,
- integerDataCon,
- liftDataCon,
- liftTyCon,
- listTyCon,
- ltDataCon,
- foreignObjTyCon,
- mkLiftTy,
+
+ listTyCon, nilDataCon, consDataCon,
+ listTyCon_RDR, consDataCon_RDR, listTyConName,
mkListTy,
- mkPrimIoTy,
- mkStateTransformerTy,
+
+ -- tuples
mkTupleTy,
- nilDataCon,
- orderingTy,
- orderingTyCon,
- primIoTyCon,
- ratioDataCon,
- ratioTyCon,
- rationalTy,
- rationalTyCon,
- realWorldStateTy,
- return2GMPsTyCon,
- returnIntAndGMPTyCon,
- stTyCon,
- stablePtrTyCon,
- stateAndAddrPrimTyCon,
- stateAndArrayPrimTyCon,
- stateAndByteArrayPrimTyCon,
- stateAndCharPrimTyCon,
- stateAndDoublePrimTyCon,
- stateAndFloatPrimTyCon,
- stateAndIntPrimTyCon,
- stateAndForeignObjPrimTyCon,
- stateAndMutableArrayPrimTyCon,
- stateAndMutableByteArrayPrimTyCon,
- stateAndPtrPrimTyCon,
- stateAndStablePtrPrimTyCon,
- stateAndSynchVarPrimTyCon,
- stateAndWordPrimTyCon,
- stateDataCon,
- stateTyCon,
- stringTy,
- stringTyCon,
- trueDataCon,
+ tupleTyCon, tupleCon,
+ unitTyCon, unitDataCon, unitDataConId, pairTyCon,
+ unboxedSingletonTyCon, unboxedSingletonDataCon,
+ unboxedPairTyCon, unboxedPairDataCon,
+
unitTy,
- voidTy, voidTyCon,
- wordDataCon,
- wordTy,
- wordTyCon
+ voidTy,
+ -- parallel arrays
+ mkPArrTy,
+ parrTyCon, parrFakeCon, isPArrTyCon, isPArrFakeCon,
+ parrTyCon_RDR, parrTyConName
) where
---ToDo:rm
---import Pretty
---import Util
---import PprType
---import PprStyle
---import Kind
+#include "HsVersions.h"
-import Ubiq
-import TyLoop ( mkDataCon, StrictnessMark(..) )
+import {-# SOURCE #-} MkId( mkDataConIds )
-- friends:
-import PrelMods
+import PrelNames
import TysPrim
-- others:
-import SpecEnv ( SpecEnv(..) )
-import Kind ( mkBoxedTypeKind, mkArrowKind )
-import Name ( mkBuiltinName )
-import SrcLoc ( mkBuiltinSrcLoc )
-import TyCon ( mkDataTyCon, mkTupleTyCon, mkSynTyCon,
- NewOrData(..), TyCon
+import Constants ( mAX_TUPLE_SIZE )
+import Module ( Module )
+import RdrName ( nameRdrName )
+import Name ( Name, nameUnique, nameOccName,
+ nameModule, mkWiredInName )
+import OccName ( mkOccFS, tcName, dataName, mkTupleOcc, mkDataConWorkerOcc )
+import DataCon ( DataCon, mkDataCon, dataConWorkId, dataConSourceArity )
+import Var ( TyVar, tyVarKind )
+import TyCon ( TyCon, AlgTyConFlavour(..), DataConDetails(..), tyConDataCons,
+ mkTupleTyCon, mkAlgTyCon, tyConName
)
-import Type ( mkTyConTy, applyTyCon, mkSynTy, mkSigmaTy,
- mkFunTys, maybeAppDataTyConExpandingDicts,
- GenType(..), ThetaType(..), TauType(..) )
-import TyVar ( tyVarKind, alphaTyVar, betaTyVar )
-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"
-
-pcDataTyCon :: Unique{-TyConKey-} -> Module -> FAST_STRING
- -> [TyVar] -> [Id] -> TyCon
-pcDataTyCon key mod str tyvars cons
- = mkDataTyCon (mkBuiltinName key mod str) tycon_kind
- tyvars [{-no context-}] cons [{-no derivings-}]
- DataType
- where
- tycon_kind = foldr (mkArrowKind . tyVarKind) mkBoxedTypeKind tyvars
-
-pcDataCon :: Unique{-DataConKey-} -> Module -> FAST_STRING
- -> [TyVar] -> ThetaType -> [TauType] -> TyCon -> SpecEnv -> Id
-pcDataCon key mod str tyvars context arg_tys tycon specenv
- = mkDataCon (mkBuiltinName key mod str)
- [ NotMarkedStrict | a <- arg_tys ]
- [ {- no labelled fields -} ]
- tyvars context arg_tys tycon
- -- specenv
-
-pcGenerateDataSpecs :: Type -> SpecEnv
-pcGenerateDataSpecs ty
- = pc_gen_specs False err err err ty
- where
- err = panic "PrelUtils:GenerateDataSpecs"
-\end{code}
-%************************************************************************
-%* *
-\subsection[TysWiredIn-boxed-prim]{The ``boxed primitive'' types (@Char@, @Int@, etc)}
-%* *
-%************************************************************************
-
-\begin{code}
--- The Void type is represented as a data type with no constructors
-voidTy = mkTyConTy voidTyCon
+import BasicTypes ( Arity, RecFlag(..), Boxity(..), isBoxed, StrictnessMark(..) )
-voidTyCon = pcDataTyCon voidTyConKey pRELUDE_BUILTIN SLIT("Void") [] []
-\end{code}
-
-\begin{code}
-charTy = mkTyConTy charTyCon
+import Type ( Type, mkTyConTy, mkTyConApp, mkTyVarTy, mkTyVarTys,
+ ThetaType, TyThing(..) )
+import Kind ( mkArrowKinds, liftedTypeKind, ubxTupleKind )
+import Unique ( incrUnique, mkTupleTyConUnique,
+ mkTupleDataConUnique, mkPArrDataConUnique )
+import PrelNames
+import Array
+import FastString
+import Outputable
-charTyCon = pcDataTyCon charTyConKey pRELUDE_BUILTIN SLIT("Char") [] [charDataCon]
-charDataCon = pcDataCon charDataConKey pRELUDE_BUILTIN SLIT("C#") [] [] [charPrimTy] charTyCon nullSpecEnv
+alpha_tyvar = [alphaTyVar]
+alpha_ty = [alphaTy]
\end{code}
-\begin{code}
-intTy = mkTyConTy intTyCon
-
-intTyCon = pcDataTyCon intTyConKey pRELUDE_BUILTIN SLIT("Int") [] [intDataCon]
-intDataCon = pcDataCon intDataConKey pRELUDE_BUILTIN SLIT("I#") [] [] [intPrimTy] intTyCon nullSpecEnv
-\end{code}
-\begin{code}
-wordTy = mkTyConTy wordTyCon
+%************************************************************************
+%* *
+\subsection{Wired in type constructors}
+%* *
+%************************************************************************
-wordTyCon = pcDataTyCon wordTyConKey pRELUDE_BUILTIN SLIT("_Word") [] [wordDataCon]
-wordDataCon = pcDataCon wordDataConKey pRELUDE_BUILTIN SLIT("W#") [] [] [wordPrimTy] wordTyCon nullSpecEnv
-\end{code}
+If you change which things are wired in, make sure you change their
+names in PrelNames, so they use wTcQual, wDataQual, etc
\begin{code}
-addrTy = mkTyConTy addrTyCon
-
-addrTyCon = pcDataTyCon addrTyConKey pRELUDE_BUILTIN SLIT("_Addr") [] [addrDataCon]
-addrDataCon = pcDataCon addrDataConKey pRELUDE_BUILTIN SLIT("A#") [] [] [addrPrimTy] addrTyCon nullSpecEnv
+wiredInTyCons :: [TyCon] -- Excludes tuples
+wiredInTyCons = [ unitTyCon -- Not treated like other tuples, because
+ -- it's defined in GHC.Base, and there's only
+ -- one of it. We put it in wiredInTyCons so
+ -- that it'll pre-populate the name cache, so
+ -- the special case in lookupOrigNameCache
+ -- doesn't need to look out for it
+ , boolTyCon
+ , charTyCon
+ , doubleTyCon
+ , floatTyCon
+ , intTyCon
+ , listTyCon
+ , parrTyCon
+ ]
\end{code}
\begin{code}
-floatTy = mkTyConTy floatTyCon
-
-floatTyCon = pcDataTyCon floatTyConKey pRELUDE_BUILTIN SLIT("Float") [] [floatDataCon]
-floatDataCon = pcDataCon floatDataConKey pRELUDE_BUILTIN SLIT("F#") [] [] [floatPrimTy] floatTyCon nullSpecEnv
+mkWiredInTyConName :: Module -> FastString -> Unique -> TyCon -> Name
+mkWiredInTyConName mod fs uniq tycon
+ = mkWiredInName mod (mkOccFS tcName fs) uniq
+ Nothing -- No parent object
+ (ATyCon tycon) -- Relevant TyCon
+
+mkWiredInDataConName :: Module -> FastString -> Unique -> DataCon -> Name -> Name
+mkWiredInDataConName mod fs uniq datacon parent
+ = mkWiredInName mod (mkOccFS dataName fs) uniq
+ (Just parent) -- Name of parent TyCon
+ (ADataCon datacon) -- Relevant DataCon
+
+charTyConName = mkWiredInTyConName pREL_BASE FSLIT("Char") charTyConKey charTyCon
+charDataConName = mkWiredInDataConName pREL_BASE FSLIT("C#") charDataConKey charDataCon charTyConName
+intTyConName = mkWiredInTyConName pREL_BASE FSLIT("Int") intTyConKey intTyCon
+intDataConName = mkWiredInDataConName pREL_BASE FSLIT("I#") intDataConKey intDataCon intTyConName
+
+boolTyConName = mkWiredInTyConName pREL_BASE FSLIT("Bool") boolTyConKey boolTyCon
+falseDataConName = mkWiredInDataConName pREL_BASE FSLIT("False") falseDataConKey falseDataCon boolTyConName
+trueDataConName = mkWiredInDataConName pREL_BASE FSLIT("True") trueDataConKey trueDataCon boolTyConName
+listTyConName = mkWiredInTyConName pREL_BASE FSLIT("[]") listTyConKey listTyCon
+nilDataConName = mkWiredInDataConName pREL_BASE FSLIT("[]") nilDataConKey nilDataCon listTyConName
+consDataConName = mkWiredInDataConName pREL_BASE FSLIT(":") consDataConKey consDataCon listTyConName
+
+floatTyConName = mkWiredInTyConName pREL_FLOAT FSLIT("Float") floatTyConKey floatTyCon
+floatDataConName = mkWiredInDataConName pREL_FLOAT FSLIT("F#") floatDataConKey floatDataCon floatTyConName
+doubleTyConName = mkWiredInTyConName pREL_FLOAT FSLIT("Double") doubleTyConKey doubleTyCon
+doubleDataConName = mkWiredInDataConName pREL_FLOAT FSLIT("D#") doubleDataConKey doubleDataCon doubleTyConName
+
+parrTyConName = mkWiredInTyConName pREL_PARR FSLIT("[::]") parrTyConKey parrTyCon
+parrDataConName = mkWiredInDataConName pREL_PARR FSLIT("PArr") parrDataConKey parrDataCon parrTyConName
+
+boolTyCon_RDR = nameRdrName boolTyConName
+false_RDR = nameRdrName falseDataConName
+true_RDR = nameRdrName trueDataConName
+intTyCon_RDR = nameRdrName intTyConName
+charTyCon_RDR = nameRdrName charTyConName
+intDataCon_RDR = nameRdrName intDataConName
+listTyCon_RDR = nameRdrName listTyConName
+consDataCon_RDR = nameRdrName consDataConName
+parrTyCon_RDR = nameRdrName parrTyConName
\end{code}
-\begin{code}
-doubleTy = mkTyConTy doubleTyCon
-doubleTyCon = pcDataTyCon doubleTyConKey pRELUDE_BUILTIN SLIT("Double") [] [doubleDataCon]
-doubleDataCon = pcDataCon doubleDataConKey pRELUDE_BUILTIN SLIT("D#") [] [] [doublePrimTy] doubleTyCon nullSpecEnv
-\end{code}
+%************************************************************************
+%* *
+\subsection{mkWiredInTyCon}
+%* *
+%************************************************************************
\begin{code}
-mkStateTy ty = applyTyCon stateTyCon [ty]
-realWorldStateTy = mkStateTy realWorldTy -- a common use
-
-stateTyCon = pcDataTyCon stateTyConKey pRELUDE_BUILTIN SLIT("_State") [alphaTyVar] [stateDataCon]
-stateDataCon
- = pcDataCon stateDataConKey pRELUDE_BUILTIN SLIT("S#")
- [alphaTyVar] [] [mkStatePrimTy alphaTy] stateTyCon nullSpecEnv
-\end{code}
+pcNonRecDataTyCon = pcTyCon False NonRecursive
+pcRecDataTyCon = pcTyCon False Recursive
-\begin{code}
-stablePtrTyCon
- = pcDataTyCon stablePtrTyConKey gLASGOW_MISC SLIT("_StablePtr")
- [alphaTyVar] [stablePtrDataCon]
+pcTyCon is_enum is_rec name tyvars argvrcs cons
+ = tycon
where
- stablePtrDataCon
- = pcDataCon stablePtrDataConKey gLASGOW_MISC SLIT("_StablePtr")
- [alphaTyVar] [] [mkStablePtrPrimTy alphaTy] stablePtrTyCon nullSpecEnv
-\end{code}
-
-\begin{code}
-foreignObjTyCon
- = pcDataTyCon foreignObjTyConKey gLASGOW_MISC SLIT("_ForeignObj")
- [] [foreignObjDataCon]
+ tycon = mkAlgTyCon name
+ (mkArrowKinds (map tyVarKind tyvars) liftedTypeKind)
+ tyvars
+ [] -- No context
+ argvrcs
+ (DataCons cons)
+ [] -- No record selectors
+ (DataTyCon is_enum)
+ is_rec
+ True -- All the wired-in tycons have generics
+
+pcDataCon :: Name -> [TyVar] -> ThetaType -> [Type] -> TyCon -> DataCon
+-- The Name should be in the DataName name space; it's the name
+-- of the DataCon itself.
+--
+-- The unique is the first of two free uniques;
+-- the first is used for the datacon itself,
+-- the second is used for the "worker name"
+
+pcDataCon dc_name tyvars context arg_tys tycon
+ = data_con
where
- foreignObjDataCon
- = pcDataCon foreignObjDataConKey gLASGOW_MISC SLIT("_ForeignObj")
- [] [] [foreignObjPrimTy] foreignObjTyCon nullSpecEnv
+ data_con = mkDataCon dc_name
+ (map (const NotMarkedStrict) arg_tys)
+ [{- No labelled fields -}]
+ tyvars context [] [] arg_tys tycon
+ (mkDataConIds bogus_wrap_name wrk_name data_con)
+
+ mod = nameModule dc_name
+ wrk_occ = mkDataConWorkerOcc (nameOccName dc_name)
+ wrk_key = incrUnique (nameUnique dc_name)
+ wrk_name = mkWiredInName mod wrk_occ wrk_key
+ (Just (tyConName tycon))
+ (AnId (dataConWorkId data_con))
+ bogus_wrap_name = pprPanic "Wired-in data wrapper id" (ppr dc_name)
+ -- Wired-in types are too simple to need wrappers
\end{code}
+
%************************************************************************
%* *
-\subsection[TysWiredIn-Integer]{@Integer@ and its related ``pairing'' types}
+\subsection[TysWiredIn-tuples]{The tuple types}
%* *
%************************************************************************
-@Integer@ and its pals are not really primitive. @Integer@ itself, first:
-\begin{code}
-integerTy :: GenType t u
-integerTy = mkTyConTy integerTyCon
-
-integerTyCon = pcDataTyCon integerTyConKey pRELUDE_BUILTIN SLIT("Integer") [] [integerDataCon]
-
-integerDataCon = pcDataCon integerDataConKey pRELUDE_BUILTIN SLIT("J#")
- [] [] [intPrimTy, intPrimTy, byteArrayPrimTy] integerTyCon nullSpecEnv
-\end{code}
-
-And the other pairing types:
\begin{code}
-return2GMPsTyCon = pcDataTyCon return2GMPsTyConKey
- pRELUDE_BUILTIN SLIT("_Return2GMPs") [] [return2GMPsDataCon]
-
-return2GMPsDataCon
- = pcDataCon return2GMPsDataConKey pRELUDE_BUILTIN SLIT("_Return2GMPs") [] []
- [intPrimTy, intPrimTy, byteArrayPrimTy,
- intPrimTy, intPrimTy, byteArrayPrimTy] return2GMPsTyCon nullSpecEnv
-
-returnIntAndGMPTyCon = pcDataTyCon returnIntAndGMPTyConKey
- pRELUDE_BUILTIN SLIT("_ReturnIntAndGMP") [] [returnIntAndGMPDataCon]
-
-returnIntAndGMPDataCon
- = pcDataCon returnIntAndGMPDataConKey pRELUDE_BUILTIN SLIT("_ReturnIntAndGMP") [] []
- [intPrimTy, intPrimTy, intPrimTy, byteArrayPrimTy] returnIntAndGMPTyCon nullSpecEnv
+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 = listArray (0,mAX_TUPLE_SIZE) [mk_tuple Boxed i | i <- [0..mAX_TUPLE_SIZE]]
+unboxedTupleArr = listArray (0,mAX_TUPLE_SIZE) [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
+ mod = mkTupleModule boxity arity
+ tc_name = mkWiredInName mod (mkTupleOcc tcName boxity arity) tc_uniq
+ Nothing (ATyCon tycon)
+ tc_kind = mkArrowKinds (map tyVarKind tyvars) res_kind
+ res_kind | isBoxed boxity = liftedTypeKind
+ | otherwise = ubxTupleKind
+
+ tyvars | isBoxed boxity = take arity alphaTyVars
+ | otherwise = take arity openAlphaTyVars
+
+ tuple_con = pcDataCon dc_name tyvars [] tyvar_tys tycon
+ tyvar_tys = mkTyVarTys tyvars
+ dc_name = mkWiredInName mod (mkTupleOcc dataName boxity arity) dc_uniq
+ (Just tc_name) (ADataCon tuple_con)
+ tc_uniq = mkTupleTyConUnique boxity arity
+ dc_uniq = mkTupleDataConUnique boxity arity
+ gen_info = True -- Tuples all have generics..
+ -- hmm: that's a *lot* of code
+
+unitTyCon = tupleTyCon Boxed 0
+unitDataCon = head (tyConDataCons unitTyCon)
+unitDataConId = dataConWorkId unitDataCon
+
+pairTyCon = tupleTyCon Boxed 2
+
+unboxedSingletonTyCon = tupleTyCon Unboxed 1
+unboxedSingletonDataCon = tupleCon Unboxed 1
+
+unboxedPairTyCon = tupleTyCon Unboxed 2
+unboxedPairDataCon = tupleCon Unboxed 2
\end{code}
%************************************************************************
%* *
-\subsection[TysWiredIn-state-pairing]{``State-pairing'' types}
+\subsection[TysWiredIn-boxed-prim]{The ``boxed primitive'' types (@Char@, @Int@, etc)}
%* *
%************************************************************************
-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<blah>#} things with
-@getStatePairingConInfo@ (given a little way down).
-
-\begin{code}
-stateAndPtrPrimTyCon
- = pcDataTyCon stateAndPtrPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndPtr#")
- [alphaTyVar, betaTyVar] [stateAndPtrPrimDataCon]
-stateAndPtrPrimDataCon
- = pcDataCon stateAndPtrPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndPtr#")
- [alphaTyVar, betaTyVar] [] [mkStatePrimTy alphaTy, betaTy]
- stateAndPtrPrimTyCon nullSpecEnv
-
-stateAndCharPrimTyCon
- = pcDataTyCon stateAndCharPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndChar#")
- [alphaTyVar] [stateAndCharPrimDataCon]
-stateAndCharPrimDataCon
- = pcDataCon stateAndCharPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndChar#")
- [alphaTyVar] [] [mkStatePrimTy alphaTy, charPrimTy]
- stateAndCharPrimTyCon nullSpecEnv
-
-stateAndIntPrimTyCon
- = pcDataTyCon stateAndIntPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndInt#")
- [alphaTyVar] [stateAndIntPrimDataCon]
-stateAndIntPrimDataCon
- = pcDataCon stateAndIntPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndInt#")
- [alphaTyVar] [] [mkStatePrimTy alphaTy, intPrimTy]
- stateAndIntPrimTyCon nullSpecEnv
-
-stateAndWordPrimTyCon
- = pcDataTyCon stateAndWordPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndWord#")
- [alphaTyVar] [stateAndWordPrimDataCon]
-stateAndWordPrimDataCon
- = pcDataCon stateAndWordPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndWord#")
- [alphaTyVar] [] [mkStatePrimTy alphaTy, wordPrimTy]
- stateAndWordPrimTyCon nullSpecEnv
-
-stateAndAddrPrimTyCon
- = pcDataTyCon stateAndAddrPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndAddr#")
- [alphaTyVar] [stateAndAddrPrimDataCon]
-stateAndAddrPrimDataCon
- = pcDataCon stateAndAddrPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndAddr#")
- [alphaTyVar] [] [mkStatePrimTy alphaTy, addrPrimTy]
- stateAndAddrPrimTyCon nullSpecEnv
-
-stateAndStablePtrPrimTyCon
- = pcDataTyCon stateAndStablePtrPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndStablePtr#")
- [alphaTyVar, betaTyVar] [stateAndStablePtrPrimDataCon]
-stateAndStablePtrPrimDataCon
- = pcDataCon stateAndStablePtrPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndStablePtr#")
- [alphaTyVar, betaTyVar] []
- [mkStatePrimTy alphaTy, applyTyCon stablePtrPrimTyCon [betaTy]]
- stateAndStablePtrPrimTyCon nullSpecEnv
-
-stateAndForeignObjPrimTyCon
- = pcDataTyCon stateAndForeignObjPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndForeignObj#")
- [alphaTyVar] [stateAndForeignObjPrimDataCon]
-stateAndForeignObjPrimDataCon
- = pcDataCon stateAndForeignObjPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndForeignObj#")
- [alphaTyVar] []
- [mkStatePrimTy alphaTy, applyTyCon foreignObjPrimTyCon []]
- stateAndForeignObjPrimTyCon nullSpecEnv
-
-stateAndFloatPrimTyCon
- = pcDataTyCon stateAndFloatPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndFloat#")
- [alphaTyVar] [stateAndFloatPrimDataCon]
-stateAndFloatPrimDataCon
- = pcDataCon stateAndFloatPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndFloat#")
- [alphaTyVar] [] [mkStatePrimTy alphaTy, floatPrimTy]
- stateAndFloatPrimTyCon nullSpecEnv
-
-stateAndDoublePrimTyCon
- = pcDataTyCon stateAndDoublePrimTyConKey pRELUDE_BUILTIN SLIT("StateAndDouble#")
- [alphaTyVar] [stateAndDoublePrimDataCon]
-stateAndDoublePrimDataCon
- = pcDataCon stateAndDoublePrimDataConKey pRELUDE_BUILTIN SLIT("StateAndDouble#")
- [alphaTyVar] [] [mkStatePrimTy alphaTy, doublePrimTy]
- stateAndDoublePrimTyCon nullSpecEnv
-\end{code}
-
\begin{code}
-stateAndArrayPrimTyCon
- = pcDataTyCon stateAndArrayPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndArray#")
- [alphaTyVar, betaTyVar] [stateAndArrayPrimDataCon]
-stateAndArrayPrimDataCon
- = pcDataCon stateAndArrayPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndArray#")
- [alphaTyVar, betaTyVar] [] [mkStatePrimTy alphaTy, mkArrayPrimTy betaTy]
- stateAndArrayPrimTyCon nullSpecEnv
-
-stateAndMutableArrayPrimTyCon
- = pcDataTyCon stateAndMutableArrayPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndMutableArray#")
- [alphaTyVar, betaTyVar] [stateAndMutableArrayPrimDataCon]
-stateAndMutableArrayPrimDataCon
- = pcDataCon stateAndMutableArrayPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndMutableArray#")
- [alphaTyVar, betaTyVar] [] [mkStatePrimTy alphaTy, mkMutableArrayPrimTy alphaTy betaTy]
- stateAndMutableArrayPrimTyCon nullSpecEnv
-
-stateAndByteArrayPrimTyCon
- = pcDataTyCon stateAndByteArrayPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndByteArray#")
- [alphaTyVar] [stateAndByteArrayPrimDataCon]
-stateAndByteArrayPrimDataCon
- = pcDataCon stateAndByteArrayPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndByteArray#")
- [alphaTyVar] [] [mkStatePrimTy alphaTy, byteArrayPrimTy]
- stateAndByteArrayPrimTyCon nullSpecEnv
-
-stateAndMutableByteArrayPrimTyCon
- = pcDataTyCon stateAndMutableByteArrayPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndMutableByteArray#")
- [alphaTyVar] [stateAndMutableByteArrayPrimDataCon]
-stateAndMutableByteArrayPrimDataCon
- = pcDataCon stateAndMutableByteArrayPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndMutableByteArray#")
- [alphaTyVar] [] [mkStatePrimTy alphaTy, applyTyCon mutableByteArrayPrimTyCon [alphaTy]]
- stateAndMutableByteArrayPrimTyCon nullSpecEnv
-
-stateAndSynchVarPrimTyCon
- = pcDataTyCon stateAndSynchVarPrimTyConKey pRELUDE_BUILTIN SLIT("StateAndSynchVar#")
- [alphaTyVar, betaTyVar] [stateAndSynchVarPrimDataCon]
-stateAndSynchVarPrimDataCon
- = pcDataCon stateAndSynchVarPrimDataConKey pRELUDE_BUILTIN SLIT("StateAndSynchVar#")
- [alphaTyVar, betaTyVar] [] [mkStatePrimTy alphaTy, mkSynchVarPrimTy alphaTy betaTy]
- stateAndSynchVarPrimTyCon nullSpecEnv
+-- 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}
-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 (maybeAppDataTyConExpandingDicts 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)),
- (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}
+charTy = mkTyConTy charTyCon
-%************************************************************************
-%* *
-\subsection[TysWiredIn-ST]{The basic @_ST@ state-transformer type}
-%* *
-%************************************************************************
+charTyCon = pcNonRecDataTyCon charTyConName [] [] [charDataCon]
+charDataCon = pcDataCon charDataConName [] [] [charPrimTy] charTyCon
-This is really just an ordinary synonym, except it is ABSTRACT.
+stringTy = mkListTy charTy -- convenience only
+\end{code}
\begin{code}
-mkStateTransformerTy s a = mkSynTy stTyCon [s, a]
-
-stTyCon
- = let
- ty = mkFunTys [mkStateTy alphaTy] (mkTupleTy 2 [betaTy, mkStateTy alphaTy])
- in
- mkSynTyCon
- (mkBuiltinName stTyConKey gLASGOW_ST SLIT("_ST"))
- (mkBoxedTypeKind `mkArrowKind` (mkBoxedTypeKind `mkArrowKind` mkBoxedTypeKind))
- 2 [alphaTyVar, betaTyVar]
- ty
+intTy = mkTyConTy intTyCon
+
+intTyCon = pcNonRecDataTyCon intTyConName [] [] [intDataCon]
+intDataCon = pcDataCon intDataConName [] [] [intPrimTy] intTyCon
\end{code}
-%************************************************************************
-%* *
-\subsection[TysWiredIn-IO]{The @PrimIO@ and @IO@ monadic-I/O types}
-%* *
-%************************************************************************
+\begin{code}
+floatTy = mkTyConTy floatTyCon
-@PrimIO@ and @IO@ really are just plain synonyms.
+floatTyCon = pcNonRecDataTyCon floatTyConName [] [] [floatDataCon]
+floatDataCon = pcDataCon floatDataConName [] [] [floatPrimTy] floatTyCon
+\end{code}
\begin{code}
-mkPrimIoTy a = mkSynTy primIoTyCon [a]
-
-primIoTyCon
- = let
- ty = mkStateTransformerTy realWorldTy alphaTy
- in
--- pprTrace "primIOTyCon:" (ppCat [pprType PprDebug ty, ppr PprDebug (typeKind ty)]) $
- mkSynTyCon
- (mkBuiltinName primIoTyConKey pRELUDE_PRIMIO SLIT("PrimIO"))
- (mkBoxedTypeKind `mkArrowKind` mkBoxedTypeKind)
- 1 [alphaTyVar] ty
+doubleTy = mkTyConTy doubleTyCon
+
+doubleTyCon = pcNonRecDataTyCon doubleTyConName [] [] [doubleDataCon]
+doubleDataCon = pcDataCon doubleDataConName [] [] [doublePrimTy] doubleTyCon
\end{code}
+
%************************************************************************
%* *
\subsection[TysWiredIn-Bool]{The @Bool@ type}
\begin{code}
boolTy = mkTyConTy boolTyCon
-boolTyCon = pcDataTyCon boolTyConKey pRELUDE SLIT("Bool") [] [falseDataCon, trueDataCon]
-
-falseDataCon = pcDataCon falseDataConKey pRELUDE SLIT("False") [] [] [] boolTyCon nullSpecEnv
-trueDataCon = pcDataCon trueDataConKey pRELUDE SLIT("True") [] [] [] boolTyCon nullSpecEnv
-\end{code}
-
-%************************************************************************
-%* *
-\subsection[TysWiredIn-Ordering]{The @Ordering@ type}
-%* *
-%************************************************************************
+boolTyCon = pcTyCon True NonRecursive boolTyConName
+ [] [] [falseDataCon, trueDataCon]
-\begin{code}
----------------------------------------------
--- data Ordering = LT | EQ | GT deriving ()
----------------------------------------------
-
-orderingTy = mkTyConTy orderingTyCon
+falseDataCon = pcDataCon falseDataConName [] [] [] boolTyCon
+trueDataCon = pcDataCon trueDataConName [] [] [] boolTyCon
-orderingTyCon = pcDataTyCon orderingTyConKey pRELUDE_BUILTIN SLIT("Ordering") []
- [ltDataCon, eqDataCon, gtDataCon]
-
-ltDataCon = pcDataCon ltDataConKey pRELUDE_BUILTIN SLIT("LT") [] [] [] orderingTyCon nullSpecEnv
-eqDataCon = pcDataCon eqDataConKey pRELUDE_BUILTIN SLIT("EQ") [] [] [] orderingTyCon nullSpecEnv
-gtDataCon = pcDataCon gtDataConKey pRELUDE_BUILTIN SLIT("GT") [] [] [] orderingTyCon nullSpecEnv
+falseDataConId = dataConWorkId falseDataCon
+trueDataConId = dataConWorkId trueDataCon
\end{code}
%************************************************************************
%************************************************************************
Special syntax, deeply wired in, but otherwise an ordinary algebraic
-data type:
+data types:
\begin{verbatim}
-data List a = Nil | a : (List a)
-ToDo: data [] a = [] | a : (List a)
-ToDo: data () = ()
- data (,,) a b c = (,,) a b c
+data [] a = [] | a : (List a)
+data () = ()
+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 [alphaTyVar] [] (applyTyCon listTyCon [alphaTy])
+listTyCon = pcRecDataTyCon listTyConName
+ alpha_tyvar [(True,False)] [nilDataCon, consDataCon]
-listTyCon = pcDataTyCon listTyConKey pRELUDE_BUILTIN SLIT("[]")
- [alphaTyVar] [nilDataCon, consDataCon]
-
-nilDataCon = pcDataCon nilDataConKey pRELUDE_BUILTIN SLIT("[]") [alphaTyVar] [] [] listTyCon
- (pcGenerateDataSpecs alphaListTy)
-consDataCon = pcDataCon consDataConKey pRELUDE_BUILTIN SLIT(":")
- [alphaTyVar] [] [alphaTy, applyTyCon listTyCon [alphaTy]] 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)
\end{itemize}
\begin{code}
-mkTupleTy :: Int -> [GenType t u] -> GenType t u
-
-mkTupleTy arity tys = applyTyCon (mkTupleTyCon arity) tys
-
-unitTy = mkTupleTy 0 []
-\end{code}
-
-%************************************************************************
-%* *
-\subsection[TysWiredIn-Ratios]{@Ratio@ and @Rational@}
-%* *
-%************************************************************************
-
-ToDo: make this (mostly) go away.
-
-\begin{code}
-rationalTy :: GenType t u
+mkTupleTy :: Boxity -> Int -> [Type] -> Type
+mkTupleTy boxity arity tys = mkTyConApp (tupleTyCon boxity arity) tys
-mkRatioTy ty = applyTyCon ratioTyCon [ty]
-rationalTy = mkRatioTy integerTy
-
-ratioTyCon = pcDataTyCon ratioTyConKey rATIO SLIT("Ratio") [alphaTyVar] [ratioDataCon]
-
-ratioDataCon = pcDataCon ratioDataConKey rATIO SLIT(":%")
- [alphaTyVar] [{-(integralClass,alphaTy)-}] [alphaTy, alphaTy] ratioTyCon nullSpecEnv
- -- context omitted to match lib/prelude/ defn of "data Ratio ..."
-
-rationalTyCon
- = mkSynTyCon
- (mkBuiltinName rationalTyConKey rATIO SLIT("Rational"))
- mkBoxedTypeKind
- 0 [] rationalTy -- == mkRatioTy integerTy
+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 = pcNonRecDataTyCon parrTyConName alpha_tyvar [(True, False)] [parrDataCon]
+
+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 = data_con
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 [alphaTyVar] [] (applyTyCon liftTyCon [alphaTy])
-
-liftTyCon
- = pcDataTyCon liftTyConKey pRELUDE_BUILTIN SLIT("_Lift") [alphaTyVar] [liftDataCon]
-
-liftDataCon
- = pcDataCon liftDataConKey pRELUDE_BUILTIN SLIT("_Lift")
- [alphaTyVar] [] [alphaTy] liftTyCon
- ((pcGenerateDataSpecs alphaLiftTy) `addOneToSpecEnv`
- (mkSpecInfo [Just realWorldStatePrimTy] 0 bottom))
- where
- bottom = panic "liftDataCon:State# _RealWorld"
+ data_con = pcDataCon name [tyvar] [] tyvarTys parrTyCon
+ tyvar = head alphaTyVars
+ tyvarTys = replicate arity $ mkTyVarTy tyvar
+ nameStr = mkFastString ("MkPArr" ++ show arity)
+ name = mkWiredInName pREL_PARR (mkOccFS dataName nameStr) uniq
+ Nothing (ADataCon data_con)
+ uniq = mkPArrDataConUnique arity
+
+-- checks whether a data constructor is a fake constructor for parallel arrays
+--
+isPArrFakeCon :: DataCon -> Bool
+isPArrFakeCon dcon = dcon == parrFakeCon (dataConSourceArity dcon)
\end{code}
-
-%************************************************************************
-%* *
-\subsection[TysWiredIn-for-convenience]{Types wired in for convenience (e.g., @String@)}
-%* *
-%************************************************************************
-
-\begin{code}
-stringTy = mkListTy charTy
-
-stringTyCon
- = mkSynTyCon
- (mkBuiltinName stringTyConKey pRELUDE SLIT("String"))
- mkBoxedTypeKind
- 0 [] stringTy
-\end{code}
projects / ghc-hetmet.git / blobdiff