\begin{code}
module PrelInfo (
- 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
- -- wiredd-in names.
-
- thinAirIdNames, -- Names of non-wired-in Ids that may be used out of
- setThinAirIds, -- thin air in any compilation. If they are not wired in
- thinAirModules, -- we must be sure to import them from some Prelude
- -- interface file even if they are not overtly
- -- mentioned. Subset of builtinNames.
- noRepIntegerIds,
- noRepStrIds,
-
- derivingOccurrences, -- For a given class C, this tells what other
- -- things are needed as a result of a
- -- deriving(C) clause
-
-
- -- Here are the thin-air Ids themselves
- int2IntegerId, addr2IntegerId,
- integerMinusOneId, integerZeroId, integerPlusOneId, integerPlusTwoId,
- packStringForCId, unpackCStringId, unpackCString2Id,
- unpackCStringAppendId, unpackCStringFoldrId,
- foldrId,
+ module MkId,
+ ghcPrimExports,
+ wiredInThings, basicKnownKeyNames,
+ primOpId,
+
-- Random other things
- main_NAME, ioTyCon_NAME,
- deRefStablePtr_NAME, makeStablePtr_NAME,
- bindIO_NAME,
-
maybeCharLikeCon, maybeIntLikeCon,
- needsDataDeclCtxtClassKeys, cCallishClassKeys, cCallishTyKeys,
- isNoDictClass, isNumericClass, isStandardClass, isCcallishClass,
- isCreturnableClass, numericTyKeys,
-
- -- RdrNames for lots of things, mainly used in derivings
- eq_RDR, ne_RDR, le_RDR, lt_RDR, ge_RDR, gt_RDR, max_RDR, min_RDR,
- compare_RDR, minBound_RDR, maxBound_RDR, enumFrom_RDR, enumFromTo_RDR,
- enumFromThen_RDR, enumFromThenTo_RDR, succ_RDR, pred_RDR, fromEnum_RDR, toEnum_RDR,
- ratioDataCon_RDR, range_RDR, index_RDR, inRange_RDR, readsPrec_RDR,
- readList_RDR, showsPrec_RDR, showList_RDR, plus_RDR, times_RDR,
- ltTag_RDR, eqTag_RDR, gtTag_RDR, 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, false_RDR, true_RDR,
- and_RDR, not_RDR, append_RDR, map_RDR, compose_RDR, mkInt_RDR,
- error_RDR, assertErr_RDR,
- showString_RDR, showParen_RDR, readParen_RDR, lex_RDR,
- showSpace_RDR, showList___RDR, readList___RDR, negate_RDR,
- numClass_RDR, fractionalClass_RDR, eqClass_RDR,
- ccallableClass_RDR, creturnableClass_RDR,
- monadClass_RDR, enumClass_RDR, ordClass_RDR,
- ioDataCon_RDR,
-
- mkTupConRdrName, mkUbxTupConRdrName
+ -- Class categories
+ isNumericClass, isStandardClass
) where
#include "HsVersions.h"
+import PrelNames ( basicKnownKeyNames,
+ hasKey, charDataConKey, intDataConKey,
+ numericClassKeys, standardClassKeys )
--- friends:
-import PrelMods -- Prelude module names
-import PrelVals -- VALUES
-import MkId ( mkPrimitiveId )
-import PrimOp ( PrimOp(..), allThePrimOps )
+import PrimOp ( PrimOp, allThePrimOps, primOpOcc, primOpTag, maxPrimOpTag )
import DataCon ( DataCon )
-import PrimRep ( PrimRep(..) )
-import TysPrim -- TYPES
-import TysWiredIn
-
--- others:
-import RdrHsSyn ( RdrName(..), varQual, tcQual, qual )
-import BasicTypes ( IfaceFlavour )
-import Var ( varUnique, Id )
-import Name ( Name, OccName, Provenance(..),
- getName, mkGlobalName, modAndOcc
- )
-import Class ( Class, classKey )
-import TyCon ( tyConDataCons, TyCon )
+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 Unique -- *Key stuff
-import UniqFM ( UniqFM, listToUFM, lookupWithDefaultUFM )
+import TyCon ( tyConName )
import Util ( isIn )
-import Panic ( panic )
-import IOExts
+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 wired_in_ids)
+ , map AnId wiredInIds
-- PrimOps
- , listToBag (map (getName . mkPrimitiveId) allThePrimOps)
-
- -- Thin-air ids
- , listToBag thinAirIdNames
-
- -- Other names with magic keys
- , listToBag knownKeyNames
- ]
-\end{code}
-
-
-\begin{code}
-getTyConNames :: TyCon -> Bag Name
-getTyConNames tycon
- = getName tycon `consBag`
- listToBag (map getName (tyConDataCons tycon))
- -- Synonyms return empty list of constructors
+ , 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{Wired in TyCons}
+ PrimOpIds
%* *
%************************************************************************
\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
- , statePrimTyCon
- , threadIdPrimTyCon
- , wordPrimTyCon
- , word64PrimTyCon
- ]
+primOpIds :: Array Int Id -- Indexed by PrimOp tag
+primOpIds = array (1,maxPrimOpTag) [ (primOpTag op, mkPrimOpId op)
+ | op <- allThePrimOps]
-tuple_tycons = unitTyCon : [tupleTyCon i | i <- [2..37] ]
-unboxed_tuple_tycons = [unboxedTupleTyCon i | i <- [1..37] ]
-
-data_tycons
- = [ addrTyCon
- , boolTyCon
- , charTyCon
- , doubleTyCon
- , floatTyCon
- , intTyCon
- , int8TyCon
- , int16TyCon
- , int32TyCon
- , int64TyCon
- , integerTyCon
- , listTyCon
- , wordTyCon
- , word8TyCon
- , word16TyCon
- , word32TyCon
- , word64TyCon
- ]
+primOpId :: PrimOp -> Id
+primOpId op = primOpIds ! primOpTag op
\end{code}
%************************************************************************
%* *
-\subsection{Wired in Ids}
-%* *
-%************************************************************************
-
-\begin{code}
-wired_in_ids
- = [ -- These error-y things are wired in because we don't yet have
- -- a way to express in an interface file that the result type variable
- -- is 'open'; that is can be unified with an unboxed type
- --
- -- [The interface file format now carry such information, but there's
- -- no way yet of expressing at the definition site for these error-reporting
- -- functions that they have an 'open' result type. -- sof 1/99]
- --
- aBSENT_ERROR_ID
- , eRROR_ID
- , iRREFUT_PAT_ERROR_ID
- , nON_EXHAUSTIVE_GUARDS_ERROR_ID
- , nO_METHOD_BINDING_ERROR_ID
- , pAR_ERROR_ID
- , pAT_ERROR_ID
- , rEC_CON_ERROR_ID
- , rEC_UPD_ERROR_ID
-
- -- These two can't be defined in Haskell
- , realWorldPrimId
- , unsafeCoerceId
- ]
-
-\end{code}
-
-%************************************************************************
-%* *
-\subsection{Thin air entities}
+\subsection{Export lists for pseudo-modules (GHC.Prim)}
%* *
%************************************************************************
-These are Ids that we need to reference in various parts of the
-system, and we'd like to pull them out of thin air rather than pass
-them around. We'd also like to have all the IdInfo available for each
-one: i.e. everything that gets pulled out of the interface file.
-
-The solution is to generate this map of global Ids after the
-typechecker, and assign it to a global variable. Any subsequent
-pass may refer to the map to pull Ids out. Any invalid
-(i.e. pre-typechecker) access to the map will result in a panic.
+GHC.Prim "exports" all the primops and primitive types, some
+wired-in Ids.
\begin{code}
-thinAirIdNames
- = map mkKnownKeyGlobal
- [
- -- Needed for converting literals to Integers (used in tidyCoreExpr)
- (varQual (pREL_BASE, SLIT("int2Integer")), int2IntegerIdKey)
- , (varQual (pREL_BASE, SLIT("addr2Integer")), addr2IntegerIdKey)
-
- -- OK, this is Will's idea: we should have magic values for Integers 0,
- -- +1, +2, and -1 (go ahead, fire me):
- , (varQual (pREL_BASE, SLIT("integer_0")), integerZeroIdKey)
- , (varQual (pREL_BASE, SLIT("integer_1")), integerPlusOneIdKey)
- , (varQual (pREL_BASE, SLIT("integer_2")), integerPlusTwoIdKey)
- , (varQual (pREL_BASE, SLIT("integer_m1")), integerMinusOneIdKey)
-
-
- -- String literals
- , (varQual (pREL_PACK, SLIT("packCString#")), packCStringIdKey)
- , (varQual (pREL_PACK, SLIT("unpackCString#")), unpackCStringIdKey)
- , (varQual (pREL_PACK, SLIT("unpackNBytes#")), unpackCString2IdKey)
- , (varQual (pREL_PACK, SLIT("unpackAppendCString#")), unpackCStringAppendIdKey)
- , (varQual (pREL_PACK, SLIT("unpackFoldrCString#")), unpackCStringFoldrIdKey)
-
- -- Folds; introduced by desugaring list comprehensions
- , (varQual (pREL_BASE, SLIT("foldr")), foldrIdKey)
- ]
-
-thinAirModules = [pREL_PACK] -- See notes with RnIfaces.findAndReadIface
-
-noRepIntegerIds = [integerZeroId, integerPlusOneId, integerPlusTwoId, integerMinusOneId,
- int2IntegerId, addr2IntegerId]
-
-noRepStrIds = [unpackCString2Id, unpackCStringId]
-
-int2IntegerId = lookupThinAirId int2IntegerIdKey
-addr2IntegerId = lookupThinAirId addr2IntegerIdKey
-
-integerMinusOneId = lookupThinAirId integerMinusOneIdKey
-integerZeroId = lookupThinAirId integerZeroIdKey
-integerPlusOneId = lookupThinAirId integerPlusOneIdKey
-integerPlusTwoId = lookupThinAirId integerPlusTwoIdKey
-
-packStringForCId = lookupThinAirId packCStringIdKey
-unpackCStringId = lookupThinAirId unpackCStringIdKey
-unpackCString2Id = lookupThinAirId unpackCString2IdKey
-unpackCStringAppendId = lookupThinAirId unpackCStringAppendIdKey
-unpackCStringFoldrId = lookupThinAirId unpackCStringFoldrIdKey
-
-foldrId = lookupThinAirId foldrIdKey
-\end{code}
-
-
-\begin{code}
-\end{code}
-
-\begin{code}
-thinAirIdMapRef :: IORef (UniqFM Id)
-thinAirIdMapRef = unsafePerformIO (newIORef (panic "thinAirIdMap: still empty"))
-
-setThinAirIds :: [Id] -> IO ()
-setThinAirIds thin_air_ids
- = writeIORef thinAirIdMapRef the_map
- where
- the_map = listToUFM [(varUnique id, id) | id <- thin_air_ids]
-
-thinAirIdMap :: UniqFM Id
-thinAirIdMap = unsafePerformIO (readIORef thinAirIdMapRef)
- -- Read it just once, the first time someone tugs on thinAirIdMap
-
-lookupThinAirId :: Unique -> Id
-lookupThinAirId uniq = lookupWithDefaultUFM thinAirIdMap
- (panic "lookupThinAirId: no mapping") uniq
+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}
-mkKnownKeyGlobal :: (RdrName, Unique) -> Name
-mkKnownKeyGlobal (Qual mod occ hif, uniq)
- = mkGlobalName uniq mod occ NoProvenance
-
-ioTyCon_NAME = mkKnownKeyGlobal (ioTyCon_RDR, ioTyConKey)
-main_NAME = mkKnownKeyGlobal (main_RDR, mainKey)
-
- -- Operations needed when compiling FFI decls
-bindIO_NAME = mkKnownKeyGlobal (bindIO_RDR, bindIOIdKey)
-deRefStablePtr_NAME = mkKnownKeyGlobal (deRefStablePtr_RDR, deRefStablePtrIdKey)
-makeStablePtr_NAME = mkKnownKeyGlobal (makeStablePtr_RDR, makeStablePtrIdKey)
-
-knownKeyNames :: [Name]
-knownKeyNames
- = [main_NAME, ioTyCon_NAME]
- ++
- map mkKnownKeyGlobal
- [
- -- Type constructors (synonyms especially)
- (orderingTyCon_RDR, orderingTyConKey)
- , (rationalTyCon_RDR, rationalTyConKey)
- , (ratioDataCon_RDR, ratioDataConKey)
- , (ratioTyCon_RDR, ratioTyConKey)
- , (byteArrayTyCon_RDR, byteArrayTyConKey)
- , (mutableByteArrayTyCon_RDR, mutableByteArrayTyConKey)
- , (foreignObjTyCon_RDR, foreignObjTyConKey)
- , (stablePtrTyCon_RDR, stablePtrTyConKey)
-
- -- 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)
-
- , (map_RDR, mapIdKey)
- , (append_RDR, appendIdKey)
-
- -- List operations
- , (concat_RDR, concatIdKey)
- , (filter_RDR, filterIdKey)
- , (zip_RDR, zipIdKey)
-
- -- Others
- , (otherwiseId_RDR, otherwiseIdKey)
- , (assert_RDR, assertIdKey)
- ]
-\end{code}
-
ToDo: make it do the ``like'' part properly (as in 0.26 and before).
\begin{code}
maybeCharLikeCon, maybeIntLikeCon :: DataCon -> Bool
-maybeCharLikeCon con = getUnique con == charDataConKey
-maybeIntLikeCon con = getUnique con == intDataConKey
-\end{code}
-
-%************************************************************************
-%* *
-\subsection{Commonly-used RdrNames}
-%* *
-%************************************************************************
-
-These RdrNames are not really "built in", but some parts of the compiler
-(notably the deriving mechanism) need to mention their names, and it's convenient
-to write them all down in one place.
-
-\begin{code}
-prelude_primop op = qual (modAndOcc (mkPrimitiveId op))
-
-main_RDR = varQual (mAIN, SLIT("main"))
-otherwiseId_RDR = varQual (pREL_BASE, SLIT("otherwise"))
-
-intTyCon_RDR = qual (modAndOcc intTyCon)
-ioTyCon_RDR = tcQual (pREL_IO_BASE, SLIT("IO"))
-ioDataCon_RDR = varQual (pREL_IO_BASE, SLIT("IO"))
-bindIO_RDR = varQual (pREL_IO_BASE, SLIT("bindIO"))
-
-orderingTyCon_RDR = tcQual (pREL_BASE, SLIT("Ordering"))
-rationalTyCon_RDR = tcQual (pREL_NUM, SLIT("Rational"))
-ratioTyCon_RDR = tcQual (pREL_NUM, SLIT("Ratio"))
-ratioDataCon_RDR = varQual (pREL_NUM, SLIT(":%"))
-
-byteArrayTyCon_RDR = tcQual (pREL_ARR, SLIT("ByteArray"))
-mutableByteArrayTyCon_RDR = tcQual (pREL_ARR, SLIT("MutableByteArray"))
-
-foreignObjTyCon_RDR = tcQual (pREL_IO_BASE, SLIT("ForeignObj"))
-stablePtrTyCon_RDR = tcQual (pREL_FOREIGN, SLIT("StablePtr"))
-deRefStablePtr_RDR = varQual (pREL_FOREIGN, SLIT("deRefStablePtr"))
-makeStablePtr_RDR = varQual (pREL_FOREIGN, SLIT("makeStablePtr"))
-
-eqClass_RDR = tcQual (pREL_BASE, SLIT("Eq"))
-ordClass_RDR = tcQual (pREL_BASE, SLIT("Ord"))
-boundedClass_RDR = tcQual (pREL_BASE, SLIT("Bounded"))
-numClass_RDR = tcQual (pREL_BASE, SLIT("Num"))
-enumClass_RDR = tcQual (pREL_BASE, SLIT("Enum"))
-monadClass_RDR = tcQual (pREL_BASE, SLIT("Monad"))
-monadPlusClass_RDR = tcQual (pREL_BASE, SLIT("MonadPlus"))
-functorClass_RDR = tcQual (pREL_BASE, SLIT("Functor"))
-showClass_RDR = tcQual (pREL_BASE, SLIT("Show"))
-realClass_RDR = tcQual (pREL_NUM, SLIT("Real"))
-integralClass_RDR = tcQual (pREL_NUM, SLIT("Integral"))
-fractionalClass_RDR = tcQual (pREL_NUM, SLIT("Fractional"))
-floatingClass_RDR = tcQual (pREL_NUM, SLIT("Floating"))
-realFracClass_RDR = tcQual (pREL_NUM, SLIT("RealFrac"))
-realFloatClass_RDR = tcQual (pREL_NUM, SLIT("RealFloat"))
-readClass_RDR = tcQual (pREL_READ, SLIT("Read"))
-ixClass_RDR = tcQual (iX, SLIT("Ix"))
-ccallableClass_RDR = tcQual (pREL_GHC, SLIT("CCallable"))
-creturnableClass_RDR = tcQual (pREL_GHC, SLIT("CReturnable"))
-
-fromInt_RDR = varQual (pREL_BASE, SLIT("fromInt"))
-fromInteger_RDR = varQual (pREL_BASE, SLIT("fromInteger"))
-minus_RDR = varQual (pREL_BASE, SLIT("-"))
-succ_RDR = varQual (pREL_BASE, SLIT("succ"))
-pred_RDR = varQual (pREL_BASE, SLIT("pred"))
-toEnum_RDR = varQual (pREL_BASE, SLIT("toEnum"))
-fromEnum_RDR = varQual (pREL_BASE, SLIT("fromEnum"))
-enumFrom_RDR = varQual (pREL_BASE, SLIT("enumFrom"))
-enumFromTo_RDR = varQual (pREL_BASE, SLIT("enumFromTo"))
-enumFromThen_RDR = varQual (pREL_BASE, SLIT("enumFromThen"))
-enumFromThenTo_RDR = varQual (pREL_BASE, SLIT("enumFromThenTo"))
-
-thenM_RDR = varQual (pREL_BASE, SLIT(">>="))
-returnM_RDR = varQual (pREL_BASE, SLIT("return"))
-failM_RDR = varQual (pREL_BASE, SLIT("fail"))
-
-fromRational_RDR = varQual (pREL_NUM, SLIT("fromRational"))
-negate_RDR = varQual (pREL_BASE, SLIT("negate"))
-eq_RDR = varQual (pREL_BASE, SLIT("=="))
-ne_RDR = varQual (pREL_BASE, SLIT("/="))
-le_RDR = varQual (pREL_BASE, SLIT("<="))
-lt_RDR = varQual (pREL_BASE, SLIT("<"))
-ge_RDR = varQual (pREL_BASE, SLIT(">="))
-gt_RDR = varQual (pREL_BASE, SLIT(">"))
-ltTag_RDR = varQual (pREL_BASE, SLIT("LT"))
-eqTag_RDR = varQual (pREL_BASE, SLIT("EQ"))
-gtTag_RDR = varQual (pREL_BASE, SLIT("GT"))
-max_RDR = varQual (pREL_BASE, SLIT("max"))
-min_RDR = varQual (pREL_BASE, SLIT("min"))
-compare_RDR = varQual (pREL_BASE, SLIT("compare"))
-minBound_RDR = varQual (pREL_BASE, SLIT("minBound"))
-maxBound_RDR = varQual (pREL_BASE, SLIT("maxBound"))
-false_RDR = varQual (pREL_BASE, SLIT("False"))
-true_RDR = varQual (pREL_BASE, SLIT("True"))
-and_RDR = varQual (pREL_BASE, SLIT("&&"))
-not_RDR = varQual (pREL_BASE, SLIT("not"))
-compose_RDR = varQual (pREL_BASE, SLIT("."))
-append_RDR = varQual (pREL_BASE, SLIT("++"))
-map_RDR = varQual (pREL_BASE, SLIT("map"))
-concat_RDR = varQual (pREL_LIST, SLIT("concat"))
-filter_RDR = varQual (pREL_LIST, SLIT("filter"))
-zip_RDR = varQual (pREL_LIST, SLIT("zip"))
-
-showList___RDR = varQual (pREL_BASE, SLIT("showList__"))
-showsPrec_RDR = varQual (pREL_BASE, SLIT("showsPrec"))
-showList_RDR = varQual (pREL_BASE, SLIT("showList"))
-showSpace_RDR = varQual (pREL_BASE, SLIT("showSpace"))
-showString_RDR = varQual (pREL_BASE, SLIT("showString"))
-showParen_RDR = varQual (pREL_BASE, SLIT("showParen"))
-
-range_RDR = varQual (iX, SLIT("range"))
-index_RDR = varQual (iX, SLIT("index"))
-inRange_RDR = varQual (iX, SLIT("inRange"))
-
-readsPrec_RDR = varQual (pREL_READ, SLIT("readsPrec"))
-readList_RDR = varQual (pREL_READ, SLIT("readList"))
-readParen_RDR = varQual (pREL_READ, SLIT("readParen"))
-lex_RDR = varQual (pREL_READ, SLIT("lex"))
-readList___RDR = varQual (pREL_READ, SLIT("readList__"))
-
-plus_RDR = varQual (pREL_BASE, SLIT("+"))
-times_RDR = varQual (pREL_BASE, SLIT("*"))
-mkInt_RDR = varQual (pREL_BASE, SLIT("I#"))
-
-error_RDR = varQual (pREL_ERR, SLIT("error"))
-assert_RDR = varQual (pREL_GHC, SLIT("assert"))
-assertErr_RDR = varQual (pREL_ERR, SLIT("assertError"))
-
-eqH_Char_RDR = prelude_primop CharEqOp
-ltH_Char_RDR = prelude_primop CharLtOp
-eqH_Word_RDR = prelude_primop WordEqOp
-ltH_Word_RDR = prelude_primop WordLtOp
-eqH_Addr_RDR = prelude_primop AddrEqOp
-ltH_Addr_RDR = prelude_primop AddrLtOp
-eqH_Float_RDR = prelude_primop FloatEqOp
-ltH_Float_RDR = prelude_primop FloatLtOp
-eqH_Double_RDR = prelude_primop DoubleEqOp
-ltH_Double_RDR = prelude_primop DoubleLtOp
-eqH_Int_RDR = prelude_primop IntEqOp
-ltH_Int_RDR = prelude_primop IntLtOp
-geH_RDR = prelude_primop IntGeOp
-leH_RDR = prelude_primop IntLeOp
-minusH_RDR = prelude_primop IntSubOp
-\end{code}
-
-\begin{code}
-mkTupConRdrName :: Int -> RdrName
-mkTupConRdrName arity = varQual (mkTupNameStr arity)
-
-mkUbxTupConRdrName :: Int -> RdrName
-mkUbxTupConRdrName arity = varQual (mkUbxTupNameStr arity)
+maybeCharLikeCon con = con `hasKey` charDataConKey
+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, 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}
-
-
-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
+isNumericClass, isStandardClass :: Class -> Bool
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
- , 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 the constructor. Ugh!
-cCallishTyKeys =
- [ addrTyConKey
- , wordTyConKey
- , byteArrayTyConKey
- , mutableByteArrayTyConKey
- , foreignObjTyConKey
- , stablePtrTyConKey
- ]
-
-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}
projects / ghc-hetmet.git / blobdiff