X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fprelude%2FPrelInfo.lhs;h=36b9520eefd39026c8ea6a3ca0362aee5542648e;hb=6959a665ebacbe635a4db616a7191ce3eee2cabe;hp=f049e0e4128e536854740de2993dccc7128d1c76;hpb=111cee3f1ad93816cb828e38b38521d85c3bcebb;p=ghc-hetmet.git diff --git a/ghc/compiler/prelude/PrelInfo.lhs b/ghc/compiler/prelude/PrelInfo.lhs index f049e0e..36b9520 100644 --- a/ghc/compiler/prelude/PrelInfo.lhs +++ b/ghc/compiler/prelude/PrelInfo.lhs @@ -5,87 +5,42 @@ \begin{code} module PrelInfo ( - module ThinAir, 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, + -- Random other things - main_NAME, ioTyCon_NAME, - deRefStablePtr_NAME, makeStablePtr_NAME, - bindIO_NAME, - maybeCharLikeCon, maybeIntLikeCon, - needsDataDeclCtxtClassKeys, cCallishClassKeys, cCallishTyKeys, - isNoDictClass, isNumericClass, isStandardClass, isCcallishClass, - isCreturnableClass, numericTyKeys, fractionalClassKeys, - - -- 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, getTag_RDR, tagToEnumH_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, - - main_RDR, - mkTupConRdrName, mkUbxTupConRdrName + -- Class categories + isNoDictClass, isNumericClass, isStandardClass ) where #include "HsVersions.h" - - --- friends: -import ThinAir -- Re-export all these -import MkId -- Ditto - -import PrelMods -- 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, mkPreludeQual ) -import Var ( varUnique, Id ) -import Name ( Name, OccName, Provenance(..), - NameSpace, tcName, clsName, varName, dataName, - mkKnownKeyGlobal, - getName, mkGlobalName, nameRdrName - ) -import RdrName ( rdrNameModule, rdrNameOcc, mkSrcQual ) -import Class ( Class, classKey ) -import TyCon ( tyConDataCons, TyCon ) +import PrelNames ( basicKnownKeyNames, + hasKey, charDataConKey, intDataConKey, + numericClassKeys, standardClassKeys, + noDictClassKeys ) + +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 Unique -- *Key stuff -import UniqFM ( UniqFM, listToUFM ) +import TyCon ( tyConName ) import Util ( isIn ) -import Panic ( panic ) + +import Array ( Array, array, (!) ) \end{code} %************************************************************************ @@ -98,549 +53,88 @@ We have two ``builtin name funs,'' one to look up @TyCons@ and @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) - - -- 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` - unionManyBags (map get_data_con_names (tyConDataCons 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{Wired in TyCons} + PrimOpIds %* * %************************************************************************ \begin{code} -wired_in_tycons = [funTyCon] ++ - prim_tycons ++ - tuple_tycons ++ - unboxed_tuple_tycons ++ - data_tycons +primOpIds :: Array Int Id -- Indexed by PrimOp tag +primOpIds = array (1,maxPrimOpTag) [ (primOpTag op, mkPrimOpId op) + | op <- allThePrimOps] -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 i | i <- [2..37] ] -unboxed_tuple_tycons = [unboxedTupleTyCon i | i <- [1..37] ] - -data_tycons - = [ addrTyCon - , boolTyCon - , charTyCon - , doubleTyCon - , floatTyCon - , intTyCon - , integerTyCon - , listTyCon - , wordTyCon - ] +primOpId :: PrimOp -> Id +primOpId op = primOpIds ! primOpTag op \end{code} %************************************************************************ %* * -\subsection{Built-in keys} +\subsection{Export lists for pseudo-modules (GHC.Prim)} %* * %************************************************************************ -Ids, Synonyms, Classes and ClassOps with builtin keys. +GHC.Prim "exports" all the primops and primitive types, some +wired-in Ids. \begin{code} -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) - , (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) - - , (map_RDR, mapIdKey) - , (append_RDR, appendIdKey) - - -- List operations - , (concat_RDR, concatIdKey) - , (filter_RDR, filterIdKey) - , (zip_RDR, zipIdKey) - , (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) - ] +ghcPrimExports :: [RdrAvailInfo] + = map (Avail . nameOccName . idName) ghcPrimIds ++ + map (Avail . primOpOcc) allThePrimOps ++ + [ AvailTC occ [occ] | + n <- funTyCon : primTyCons, let occ = nameOccName (tyConName n) + ] \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} +\subsection{Built-in keys} %* * %************************************************************************ -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} -main_RDR = varQual mAIN_Name SLIT("main") -otherwiseId_RDR = varQual pREL_BASE_Name SLIT("otherwise") - -intTyCon_RDR = nameRdrName (getName intTyCon) -ioTyCon_RDR = tcQual pREL_IO_BASE_Name SLIT("IO") -ioDataCon_RDR = dataQual pREL_IO_BASE_Name SLIT("IO") -bindIO_RDR = varQual pREL_IO_BASE_Name SLIT("bindIO") - -orderingTyCon_RDR = tcQual pREL_BASE_Name SLIT("Ordering") - -rationalTyCon_RDR = tcQual pREL_REAL_Name SLIT("Rational") -ratioTyCon_RDR = tcQual pREL_REAL_Name SLIT("Ratio") -ratioDataCon_RDR = dataQual pREL_REAL_Name SLIT(":%") - -byteArrayTyCon_RDR = tcQual pREL_BYTEARR_Name SLIT("ByteArray") -mutableByteArrayTyCon_RDR = tcQual pREL_BYTEARR_Name SLIT("MutableByteArray") - -foreignObjTyCon_RDR = tcQual pREL_IO_BASE_Name SLIT("ForeignObj") -stablePtrTyCon_RDR = tcQual pREL_STABLE_Name SLIT("StablePtr") -stablePtrDataCon_RDR = dataQual pREL_STABLE_Name SLIT("StablePtr") -deRefStablePtr_RDR = varQual pREL_STABLE_Name SLIT("deRefStablePtr") -makeStablePtr_RDR = varQual pREL_STABLE_Name SLIT("makeStablePtr") - --- Random PrelBase data constructors -mkInt_RDR = dataQual pREL_BASE_Name SLIT("I#") -false_RDR = dataQual pREL_BASE_Name SLIT("False") -true_RDR = dataQual pREL_BASE_Name SLIT("True") - --- Random PrelBase functions -and_RDR = varQual pREL_BASE_Name SLIT("&&") -not_RDR = varQual pREL_BASE_Name SLIT("not") -compose_RDR = varQual pREL_BASE_Name SLIT(".") -append_RDR = varQual pREL_BASE_Name SLIT("++") -map_RDR = varQual pREL_BASE_Name SLIT("map") -build_RDR = varQual pREL_BASE_Name SLIT("build") -augment_RDR = varQual pREL_BASE_Name SLIT("augment") - --- Classes Eq and Ord -eqClass_RDR = clsQual pREL_BASE_Name SLIT("Eq") -ordClass_RDR = clsQual pREL_BASE_Name SLIT("Ord") -eq_RDR = varQual pREL_BASE_Name SLIT("==") -ne_RDR = varQual pREL_BASE_Name SLIT("/=") -le_RDR = varQual pREL_BASE_Name SLIT("<=") -lt_RDR = varQual pREL_BASE_Name SLIT("<") -ge_RDR = varQual pREL_BASE_Name SLIT(">=") -gt_RDR = varQual pREL_BASE_Name SLIT(">") -ltTag_RDR = dataQual pREL_BASE_Name SLIT("LT") -eqTag_RDR = dataQual pREL_BASE_Name SLIT("EQ") -gtTag_RDR = dataQual pREL_BASE_Name SLIT("GT") -max_RDR = varQual pREL_BASE_Name SLIT("max") -min_RDR = varQual pREL_BASE_Name SLIT("min") -compare_RDR = varQual pREL_BASE_Name SLIT("compare") - --- Class Monad -monadClass_RDR = clsQual pREL_BASE_Name SLIT("Monad") -monadPlusClass_RDR = clsQual pREL_BASE_Name SLIT("MonadPlus") -thenM_RDR = varQual pREL_BASE_Name SLIT(">>=") -returnM_RDR = varQual pREL_BASE_Name SLIT("return") -failM_RDR = varQual pREL_BASE_Name SLIT("fail") - --- Class Functor -functorClass_RDR = clsQual pREL_BASE_Name SLIT("Functor") - --- Class Show -showClass_RDR = clsQual pREL_SHOW_Name SLIT("Show") -showList___RDR = varQual pREL_SHOW_Name SLIT("showList__") -showsPrec_RDR = varQual pREL_SHOW_Name SLIT("showsPrec") -showList_RDR = varQual pREL_SHOW_Name SLIT("showList") -showSpace_RDR = varQual pREL_SHOW_Name SLIT("showSpace") -showString_RDR = varQual pREL_SHOW_Name SLIT("showString") -showParen_RDR = varQual pREL_SHOW_Name SLIT("showParen") - - --- Class Read -readClass_RDR = clsQual pREL_READ_Name SLIT("Read") -readsPrec_RDR = varQual pREL_READ_Name SLIT("readsPrec") -readList_RDR = varQual pREL_READ_Name SLIT("readList") -readParen_RDR = varQual pREL_READ_Name SLIT("readParen") -lex_RDR = varQual pREL_READ_Name SLIT("lex") -readList___RDR = varQual pREL_READ_Name SLIT("readList__") - - --- Class Num -numClass_RDR = clsQual pREL_NUM_Name SLIT("Num") -fromInt_RDR = varQual pREL_NUM_Name SLIT("fromInt") -fromInteger_RDR = varQual pREL_NUM_Name SLIT("fromInteger") -minus_RDR = varQual pREL_NUM_Name SLIT("-") -negate_RDR = varQual pREL_NUM_Name SLIT("negate") -plus_RDR = varQual pREL_NUM_Name SLIT("+") -times_RDR = varQual pREL_NUM_Name SLIT("*") - --- Other numberic classes -realClass_RDR = clsQual pREL_REAL_Name SLIT("Real") -integralClass_RDR = clsQual pREL_REAL_Name SLIT("Integral") -realFracClass_RDR = clsQual pREL_REAL_Name SLIT("RealFrac") -fractionalClass_RDR = clsQual pREL_REAL_Name SLIT("Fractional") -fromRational_RDR = varQual pREL_REAL_Name SLIT("fromRational") - -floatingClass_RDR = clsQual pREL_FLOAT_Name SLIT("Floating") -realFloatClass_RDR = clsQual pREL_FLOAT_Name SLIT("RealFloat") - --- Class Ix -ixClass_RDR = clsQual iX_Name SLIT("Ix") -range_RDR = varQual iX_Name SLIT("range") -index_RDR = varQual iX_Name SLIT("index") -inRange_RDR = varQual iX_Name SLIT("inRange") - --- Class CCallable and CReturnable -ccallableClass_RDR = clsQual pREL_GHC_Name SLIT("CCallable") -creturnableClass_RDR = clsQual pREL_GHC_Name SLIT("CReturnable") - --- Class Enum -enumClass_RDR = clsQual pREL_ENUM_Name SLIT("Enum") -succ_RDR = varQual pREL_ENUM_Name SLIT("succ") -pred_RDR = varQual pREL_ENUM_Name SLIT("pred") -toEnum_RDR = varQual pREL_ENUM_Name SLIT("toEnum") -fromEnum_RDR = varQual pREL_ENUM_Name SLIT("fromEnum") -enumFrom_RDR = varQual pREL_ENUM_Name SLIT("enumFrom") -enumFromTo_RDR = varQual pREL_ENUM_Name SLIT("enumFromTo") -enumFromThen_RDR = varQual pREL_ENUM_Name SLIT("enumFromThen") -enumFromThenTo_RDR = varQual pREL_ENUM_Name SLIT("enumFromThenTo") - --- Class Bounded -boundedClass_RDR = clsQual pREL_ENUM_Name SLIT("Bounded") -minBound_RDR = varQual pREL_ENUM_Name SLIT("minBound") -maxBound_RDR = varQual pREL_ENUM_Name SLIT("maxBound") - - --- List functions -concat_RDR = varQual pREL_LIST_Name SLIT("concat") -filter_RDR = varQual pREL_LIST_Name SLIT("filter") -zip_RDR = varQual pREL_LIST_Name SLIT("zip") - -int8TyCon_RDR = tcQual iNT_Name SLIT("Int8") -int16TyCon_RDR = tcQual iNT_Name SLIT("Int16") -int32TyCon_RDR = tcQual iNT_Name SLIT("Int32") -int64TyCon_RDR = tcQual pREL_ADDR_Name SLIT("Int64") - -word8TyCon_RDR = tcQual wORD_Name SLIT("Word8") -word16TyCon_RDR = tcQual wORD_Name SLIT("Word16") -word32TyCon_RDR = tcQual wORD_Name SLIT("Word32") -word64TyCon_RDR = tcQual pREL_ADDR_Name SLIT("Word64") - -error_RDR = varQual pREL_ERR_Name SLIT("error") -assert_RDR = varQual pREL_GHC_Name SLIT("assert") -assertErr_RDR = varQual pREL_ERR_Name SLIT("assertError") -runSTRep_RDR = varQual pREL_ST_Name SLIT("runSTRep") - -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 - -tagToEnumH_RDR = primOpRdrName TagToEnumOp -getTag_RDR = varQual pREL_GHC_Name SLIT("getTag#") -\end{code} +ToDo: make it do the ``like'' part properly (as in 0.26 and before). \begin{code} -mkTupConRdrName :: Int -> RdrName -mkTupConRdrName arity = case mkTupNameStr arity of - (mod, occ) -> dataQual mod occ - -mkUbxTupConRdrName :: Int -> RdrName -mkUbxTupConRdrName arity = case mkUbxTupNameStr arity of - (mod, occ) -> dataQual mod occ +maybeCharLikeCon, maybeIntLikeCon :: DataCon -> Bool +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 +isNoDictClass, isNumericClass, isStandardClass :: Class -> Bool -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} - - -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} - - -%************************************************************************ -%* * -\subsection{Local helpers} -%* * -%************************************************************************ - -\begin{code} -varQual = mkPreludeQual varName -dataQual = mkPreludeQual dataName -tcQual = mkPreludeQual tcName -clsQual = mkPreludeQual clsName \end{code} -