\begin{code}
module PrelInfo (
- module PrelNames,
module MkId,
- builtinNames, -- Names of things whose *unique* must be known, but
- -- that is all. If something is in here, you know that
- -- if it's used at all then it's Name will be just as
- -- it is here, unique and all. Includes all the
-
- derivingOccurrences, -- For a given class C, this tells what other
- derivableClassKeys, -- things are needed as a result of a
- -- deriving(C) clause
-
-
+ ghcPrimExports,
+ wiredInThings, basicKnownKeyNames,
+ primOpId,
- -- Primop RdrNames
- eqH_Char_RDR, ltH_Char_RDR, eqH_Word_RDR, ltH_Word_RDR,
- eqH_Addr_RDR, ltH_Addr_RDR, eqH_Float_RDR, ltH_Float_RDR,
- eqH_Double_RDR, ltH_Double_RDR, eqH_Int_RDR, ltH_Int_RDR,
- geH_RDR, leH_RDR, minusH_RDR, tagToEnumH_RDR,
-
-- Random other things
maybeCharLikeCon, maybeIntLikeCon,
- needsDataDeclCtxtClassKeys, cCallishClassKeys, cCallishTyKeys,
- isNoDictClass, isNumericClass, isStandardClass, isCcallishClass,
- isCreturnableClass, numericTyKeys, fractionalClassKeys,
+
+ -- Class categories
+ isNumericClass, isStandardClass
) where
#include "HsVersions.h"
--- friends:
-import MkId -- Ditto
-import PrelNames -- Prelude module names
-
-import PrimOp ( PrimOp(..), allThePrimOps, primOpRdrName )
-import DataCon ( DataCon, dataConId, dataConWrapId )
-import PrimRep ( PrimRep(..) )
-import TysPrim -- TYPES
-import TysWiredIn
-
--- others:
-import RdrName ( RdrName )
-import Var ( varUnique, Id )
-import Name ( Name, OccName, Provenance(..),
- NameSpace, tcName, clsName, varName, dataName,
- mkKnownKeyGlobal,
- getName, mkGlobalName, nameRdrName
- )
-import Class ( Class, classKey )
-import TyCon ( tyConDataConsIfAvailable, TyCon )
+import PrelNames ( basicKnownKeyNames,
+ hasKey, charDataConKey, intDataConKey,
+ numericClassKeys, standardClassKeys )
+
+import PrimOp ( PrimOp, allThePrimOps, primOpOcc, primOpTag, maxPrimOpTag )
+import DataCon ( DataCon )
+import Id ( Id, idName )
+import MkId ( mkPrimOpId, wiredInIds )
+import MkId -- All of it, for re-export
+import Name ( nameOccName )
+import TysPrim ( primTyCons )
+import TysWiredIn ( wiredInTyCons )
+import HscTypes ( TyThing(..), implicitTyThings, GenAvailInfo(..), RdrAvailInfo )
+import Class ( Class, classKey )
import Type ( funTyCon )
-import Bag
-import BasicTypes ( Boxity(..) )
-import Unique -- *Key stuff
-import UniqFM ( UniqFM, listToUFM )
+import TyCon ( tyConName )
import Util ( isIn )
-import Panic ( panic )
+
+import Array ( Array, array, (!) )
\end{code}
%************************************************************************
@Classes@, the other to look up values.
\begin{code}
-builtinNames :: Bag Name
-builtinNames
- = unionManyBags
- [ -- Wired in TyCons
- unionManyBags (map getTyConNames wired_in_tycons)
+wiredInThings :: [TyThing]
+wiredInThings
+ = concat
+ [ -- Wired in TyCons and their implicit Ids
+ tycon_things
+ , concatMap implicitTyThings tycon_things
-- Wired in Ids
- , listToBag (map getName wiredInIds)
+ , map AnId wiredInIds
-- PrimOps
- , listToBag (map (getName . mkPrimOpId) allThePrimOps)
-
- -- Other names with magic keys
- , listToBag knownKeyNames
- ]
-\end{code}
-
-
-\begin{code}
-getTyConNames :: TyCon -> Bag Name
-getTyConNames tycon
- = getName tycon `consBag`
- unionManyBags (map get_data_con_names (tyConDataConsIfAvailable tycon))
- -- Synonyms return empty list of constructors
- where
- get_data_con_names dc = listToBag [getName (dataConId dc), -- Worker
- getName (dataConWrapId dc)] -- Wrapper
+ , map (AnId . mkPrimOpId) allThePrimOps
+ ]
+ where
+ tycon_things = map ATyCon ([funTyCon] ++ primTyCons ++ wiredInTyCons)
\end{code}
We let a lot of "non-standard" values be visible, so that we can make
sense of them in interface pragmas. It's cool, though they all have
"non-standard" names, so they won't get past the parser in user code.
-
%************************************************************************
%* *
-\subsection{RdrNames for the primops}
+ PrimOpIds
%* *
%************************************************************************
-These can't be in PrelNames, because we get the RdrName from the PrimOp,
-which is above PrelNames in the module hierarchy.
-
\begin{code}
-eqH_Char_RDR = primOpRdrName CharEqOp
-ltH_Char_RDR = primOpRdrName CharLtOp
-eqH_Word_RDR = primOpRdrName WordEqOp
-ltH_Word_RDR = primOpRdrName WordLtOp
-eqH_Addr_RDR = primOpRdrName AddrEqOp
-ltH_Addr_RDR = primOpRdrName AddrLtOp
-eqH_Float_RDR = primOpRdrName FloatEqOp
-ltH_Float_RDR = primOpRdrName FloatLtOp
-eqH_Double_RDR = primOpRdrName DoubleEqOp
-ltH_Double_RDR = primOpRdrName DoubleLtOp
-eqH_Int_RDR = primOpRdrName IntEqOp
-ltH_Int_RDR = primOpRdrName IntLtOp
-geH_RDR = primOpRdrName IntGeOp
-leH_RDR = primOpRdrName IntLeOp
-minusH_RDR = primOpRdrName IntSubOp
+primOpIds :: Array Int Id -- Indexed by PrimOp tag
+primOpIds = array (1,maxPrimOpTag) [ (primOpTag op, mkPrimOpId op)
+ | op <- allThePrimOps]
-tagToEnumH_RDR = primOpRdrName TagToEnumOp
+primOpId :: PrimOp -> Id
+primOpId op = primOpIds ! primOpTag op
\end{code}
+
%************************************************************************
%* *
-\subsection{Wired in TyCons}
+\subsection{Export lists for pseudo-modules (GHC.Prim)}
%* *
%************************************************************************
-\begin{code}
-wired_in_tycons = [funTyCon] ++
- prim_tycons ++
- tuple_tycons ++
- unboxed_tuple_tycons ++
- data_tycons
-
-prim_tycons
- = [ addrPrimTyCon
- , arrayPrimTyCon
- , byteArrayPrimTyCon
- , charPrimTyCon
- , doublePrimTyCon
- , floatPrimTyCon
- , intPrimTyCon
- , int64PrimTyCon
- , foreignObjPrimTyCon
- , weakPrimTyCon
- , mutableArrayPrimTyCon
- , mutableByteArrayPrimTyCon
- , mVarPrimTyCon
- , mutVarPrimTyCon
- , realWorldTyCon
- , stablePtrPrimTyCon
- , stableNamePrimTyCon
- , statePrimTyCon
- , threadIdPrimTyCon
- , wordPrimTyCon
- , word64PrimTyCon
- ]
-
-tuple_tycons = unitTyCon : [tupleTyCon Boxed i | i <- [2..37] ]
-unboxed_tuple_tycons = [tupleTyCon Unboxed i | i <- [1..37] ]
+GHC.Prim "exports" all the primops and primitive types, some
+wired-in Ids.
-data_tycons
- = [ addrTyCon
- , boolTyCon
- , charTyCon
- , doubleTyCon
- , floatTyCon
- , intTyCon
- , integerTyCon
- , listTyCon
- , wordTyCon
- ]
+\begin{code}
+ghcPrimExports :: [RdrAvailInfo]
+ghcPrimExports
+ = map (Avail . nameOccName . idName) ghcPrimIds ++
+ map (Avail . primOpOcc) allThePrimOps ++
+ [ AvailTC occ [occ] |
+ n <- funTyCon : primTyCons, let occ = nameOccName (tyConName n)
+ ]
\end{code}
%* *
%************************************************************************
-Ids, Synonyms, Classes and ClassOps with builtin keys.
-
-\begin{code}
-knownKeyNames :: [Name]
-knownKeyNames
- = map mkKnownKeyGlobal
- [
- -- Type constructors (synonyms especially)
- (ioTyCon_RDR, ioTyConKey)
- , (main_RDR, mainKey)
- , (orderingTyCon_RDR, orderingTyConKey)
- , (rationalTyCon_RDR, rationalTyConKey)
- , (ratioDataCon_RDR, ratioDataConKey)
- , (ratioTyCon_RDR, ratioTyConKey)
- , (byteArrayTyCon_RDR, byteArrayTyConKey)
- , (mutableByteArrayTyCon_RDR, mutableByteArrayTyConKey)
- , (foreignObjTyCon_RDR, foreignObjTyConKey)
- , (stablePtrTyCon_RDR, stablePtrTyConKey)
- , (stablePtrDataCon_RDR, stablePtrDataConKey)
-
- -- Classes. *Must* include:
- -- classes that are grabbed by key (e.g., eqClassKey)
- -- classes in "Class.standardClassKeys" (quite a few)
- , (eqClass_RDR, eqClassKey) -- mentioned, derivable
- , (ordClass_RDR, ordClassKey) -- derivable
- , (boundedClass_RDR, boundedClassKey) -- derivable
- , (numClass_RDR, numClassKey) -- mentioned, numeric
- , (enumClass_RDR, enumClassKey) -- derivable
- , (monadClass_RDR, monadClassKey)
- , (monadPlusClass_RDR, monadPlusClassKey)
- , (functorClass_RDR, functorClassKey)
- , (showClass_RDR, showClassKey) -- derivable
- , (realClass_RDR, realClassKey) -- numeric
- , (integralClass_RDR, integralClassKey) -- numeric
- , (fractionalClass_RDR, fractionalClassKey) -- numeric
- , (floatingClass_RDR, floatingClassKey) -- numeric
- , (realFracClass_RDR, realFracClassKey) -- numeric
- , (realFloatClass_RDR, realFloatClassKey) -- numeric
- , (readClass_RDR, readClassKey) -- derivable
- , (ixClass_RDR, ixClassKey) -- derivable (but it isn't Prelude.Ix; hmmm)
- , (ccallableClass_RDR, cCallableClassKey) -- mentioned, ccallish
- , (creturnableClass_RDR, cReturnableClassKey) -- mentioned, ccallish
-
- -- ClassOps
- , (fromInt_RDR, fromIntClassOpKey)
- , (fromInteger_RDR, fromIntegerClassOpKey)
- , (ge_RDR, geClassOpKey)
- , (minus_RDR, minusClassOpKey)
- , (enumFrom_RDR, enumFromClassOpKey)
- , (enumFromThen_RDR, enumFromThenClassOpKey)
- , (enumFromTo_RDR, enumFromToClassOpKey)
- , (enumFromThenTo_RDR, enumFromThenToClassOpKey)
- , (fromEnum_RDR, fromEnumClassOpKey)
- , (toEnum_RDR, toEnumClassOpKey)
- , (eq_RDR, eqClassOpKey)
- , (thenM_RDR, thenMClassOpKey)
- , (returnM_RDR, returnMClassOpKey)
- , (failM_RDR, failMClassOpKey)
- , (fromRational_RDR, fromRationalClassOpKey)
-
- , (deRefStablePtr_RDR, deRefStablePtrIdKey)
- , (makeStablePtr_RDR, makeStablePtrIdKey)
- , (bindIO_RDR, bindIOIdKey)
- , (returnIO_RDR, returnIOIdKey)
- , (addr2Integer_RDR, addr2IntegerIdKey)
-
- -- Strings and lists
- , (map_RDR, mapIdKey)
- , (append_RDR, appendIdKey)
- , (unpackCString_RDR, unpackCStringIdKey)
- , (unpackCString2_RDR, unpackCString2IdKey)
- , (unpackCStringAppend_RDR, unpackCStringAppendIdKey)
- , (unpackCStringFoldr_RDR, unpackCStringFoldrIdKey)
-
- -- List operations
- , (concat_RDR, concatIdKey)
- , (filter_RDR, filterIdKey)
- , (zip_RDR, zipIdKey)
- , (foldr_RDR, foldrIdKey)
- , (build_RDR, buildIdKey)
- , (augment_RDR, augmentIdKey)
-
- -- FFI primitive types that are not wired-in.
- , (int8TyCon_RDR, int8TyConKey)
- , (int16TyCon_RDR, int16TyConKey)
- , (int32TyCon_RDR, int32TyConKey)
- , (int64TyCon_RDR, int64TyConKey)
- , (word8TyCon_RDR, word8TyConKey)
- , (word16TyCon_RDR, word16TyConKey)
- , (word32TyCon_RDR, word32TyConKey)
- , (word64TyCon_RDR, word64TyConKey)
-
- -- Others
- , (otherwiseId_RDR, otherwiseIdKey)
- , (assert_RDR, assertIdKey)
- , (runSTRep_RDR, runSTRepIdKey)
- ]
-\end{code}
-
ToDo: make it do the ``like'' part properly (as in 0.26 and before).
\begin{code}
maybeIntLikeCon con = con `hasKey` intDataConKey
\end{code}
+
%************************************************************************
%* *
-\subsection[Class-std-groups]{Standard groups of Prelude classes}
+\subsection{Class predicates}
%* *
%************************************************************************
-@derivableClassKeys@ is also used in checking \tr{deriving} constructs
-(@TcDeriv@).
-
-@derivingOccurrences@ maps a class name to a list of the (qualified) occurrences
-that will be mentioned by the derived code for the class when it is later generated.
-We don't need to put in things that are WiredIn (because they are already mapped to their
-correct name by the @NameSupply@. The class itself, and all its class ops, is
-already flagged as an occurrence so we don't need to mention that either.
-
-@derivingOccurrences@ has an item for every derivable class, even if that item is empty,
-because we treat lookup failure as indicating that the class is illegal in a deriving clause.
-
\begin{code}
-derivingOccurrences :: UniqFM [RdrName]
-derivingOccurrences = listToUFM deriving_occ_info
-
-derivableClassKeys = map fst deriving_occ_info
-
-deriving_occ_info
- = [ (eqClassKey, [intTyCon_RDR, and_RDR, not_RDR])
- , (ordClassKey, [intTyCon_RDR, compose_RDR, eqTag_RDR])
- -- EQ (from Ordering) is needed to force in the constructors
- -- as well as the type constructor.
- , (enumClassKey, [intTyCon_RDR, eq_RDR, ge_RDR, and_RDR, map_RDR, plus_RDR, showsPrec_RDR, append_RDR])
- -- The last two Enum deps are only used to produce better
- -- error msgs for derived toEnum methods.
- , (boundedClassKey, [intTyCon_RDR])
- , (showClassKey, [intTyCon_RDR, numClass_RDR, ordClass_RDR, compose_RDR, showString_RDR,
- showParen_RDR, showSpace_RDR, showList___RDR])
- , (readClassKey, [intTyCon_RDR, numClass_RDR, ordClass_RDR, append_RDR,
- lex_RDR, readParen_RDR, readList___RDR, thenM_RDR])
- -- returnM (and the rest of the Monad class decl)
- -- will be forced in as result of depending
- -- on thenM. -- SOF 1/99
- , (ixClassKey, [intTyCon_RDR, numClass_RDR, and_RDR, map_RDR, enumFromTo_RDR,
- returnM_RDR, failM_RDR])
- -- the last two are needed to force returnM, thenM and failM
- -- in before typechecking the list(monad) comprehension
- -- generated for derived Ix instances (range method)
- -- of single constructor types. -- SOF 8/97
- ]
- -- intTyCon: Practically any deriving needs Int, either for index calculations,
- -- or for taggery.
- -- ordClass: really it's the methods that are actually used.
- -- numClass: for Int literals
-\end{code}
+isNumericClass, isStandardClass :: Class -> Bool
-
-NOTE: @Eq@ and @Text@ do need to appear in @standardClasses@
-even though every numeric class has these two as a superclass,
-because the list of ambiguous dictionaries hasn't been simplified.
-
-\begin{code}
-isCcallishClass, isCreturnableClass, isNoDictClass,
- isNumericClass, isStandardClass :: Class -> Bool
-
-isFractionalClass clas = classKey clas `is_elem` fractionalClassKeys
isNumericClass clas = classKey clas `is_elem` numericClassKeys
isStandardClass clas = classKey clas `is_elem` standardClassKeys
-isCcallishClass clas = classKey clas `is_elem` cCallishClassKeys
-isCreturnableClass clas = classKey clas == cReturnableClassKey
-isNoDictClass clas = classKey clas `is_elem` noDictClassKeys
is_elem = isIn "is_X_Class"
-
-numericClassKeys =
- [ numClassKey
- , realClassKey
- , integralClassKey
- ]
- ++ fractionalClassKeys
-
-fractionalClassKeys =
- [ fractionalClassKey
- , floatingClassKey
- , realFracClassKey
- , realFloatClassKey
- ]
-
- -- the strictness analyser needs to know about numeric types
- -- (see SaAbsInt.lhs)
-numericTyKeys =
- [ addrTyConKey
- , wordTyConKey
- , intTyConKey
- , integerTyConKey
- , doubleTyConKey
- , floatTyConKey
- ]
-
-needsDataDeclCtxtClassKeys = -- see comments in TcDeriv
- [ readClassKey
- ]
-
-cCallishClassKeys =
- [ cCallableClassKey
- , cReturnableClassKey
- ]
-
- -- Renamer always imports these data decls replete with constructors
- -- so that desugarer can always see their constructors. Ugh!
-cCallishTyKeys =
- [ addrTyConKey
- , wordTyConKey
- , byteArrayTyConKey
- , mutableByteArrayTyConKey
- , foreignObjTyConKey
- , stablePtrTyConKey
- , int8TyConKey
- , int16TyConKey
- , int32TyConKey
- , int64TyConKey
- , word8TyConKey
- , word16TyConKey
- , word32TyConKey
- , word64TyConKey
- ]
-
-standardClassKeys
- = derivableClassKeys ++ numericClassKeys ++ cCallishClassKeys
- --
- -- We have to have "CCallable" and "CReturnable" in the standard
- -- classes, so that if you go...
- --
- -- _ccall_ foo ... 93{-numeric literal-} ...
- --
- -- ... it can do The Right Thing on the 93.
-
-noDictClassKeys -- These classes are used only for type annotations;
- -- they are not implemented by dictionaries, ever.
- = cCallishClassKeys
\end{code}
-
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