X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fprelude%2FPrelInfo.lhs;h=cb0a3064ff2fde5d55179025c81b028861340e9b;hb=449deb80dde91031b86b9cb4fb183696e0139bae;hp=8096274c7b1f55af6e4609a5bb14f58923326487;hpb=26741ec416bae2c502ef00a2ba0e79050a32cb67;p=ghc-hetmet.git diff --git a/ghc/compiler/prelude/PrelInfo.lhs b/ghc/compiler/prelude/PrelInfo.lhs index 8096274..cb0a306 100644 --- a/ghc/compiler/prelude/PrelInfo.lhs +++ b/ghc/compiler/prelude/PrelInfo.lhs @@ -1,46 +1,100 @@ % -% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996 +% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998 % \section[PrelInfo]{The @PrelInfo@ interface to the compiler's prelude knowledge} \begin{code} -#include "HsVersions.h" - 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 + addr2IntegerId, + packStringForCId, unpackCStringId, unpackCString2Id, + unpackCStringAppendId, unpackCStringFoldrId, + foldrId, + + -- 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 - -- finite maps for built-in things (for the renamer and typechecker): - builtinNameInfo, SYN_IE(BuiltinNames), - SYN_IE(BuiltinKeys), SYN_IE(BuiltinIdInfos), - - maybeCharLikeTyCon, maybeIntLikeTyCon ) where -IMP_Ubiq() -IMPORT_DELOOPER(PrelLoop) ( primOpNameInfo ) +#include "HsVersions.h" + -- friends: import PrelMods -- Prelude module names import PrelVals -- VALUES +import MkId ( mkPrimitiveId ) import PrimOp ( PrimOp(..), allThePrimOps ) +import DataCon ( DataCon ) import PrimRep ( PrimRep(..) ) import TysPrim -- TYPES import TysWiredIn -- others: -import CmdLineOpts ( opt_HideBuiltinNames, - opt_HideMostBuiltinNames, - opt_ForConcurrent +import RdrName ( RdrName, mkPreludeQual ) +import Var ( varUnique, Id ) +import Name ( Name, OccName, Provenance(..), + NameSpace, tcName, clsName, varName, dataName, + getName, mkGlobalName, nameRdrName, systemProvenance ) -import FiniteMap ( FiniteMap, emptyFM, listToFM ) -import Id ( mkTupleCon, GenId, SYN_IE(Id) ) -import Maybes ( catMaybes ) -import Name ( origName, OrigName(..), Name ) -import RnHsSyn ( RnName(..) ) -import TyCon ( tyConDataCons, mkFunTyCon, mkTupleTyCon, TyCon ) -import Type -import UniqFM ( UniqFM, emptyUFM, listToUFM ) +import RdrName ( rdrNameModule, rdrNameOcc, mkSrcQual ) +import Class ( Class, classKey ) +import TyCon ( tyConDataCons, TyCon ) +import Type ( funTyCon ) +import Bag import Unique -- *Key stuff -import Util ( nOfThem, panic ) +import UniqFM ( UniqFM, listToUFM, lookupWithDefaultUFM ) +import Util ( isIn ) +import Panic ( panic ) + +import IOExts \end{code} %************************************************************************ @@ -53,98 +107,52 @@ We have two ``builtin name funs,'' one to look up @TyCons@ and @Classes@, the other to look up values. \begin{code} -builtinNameInfo :: ( BuiltinNames, BuiltinKeys, BuiltinIdInfos ) - -type BuiltinNames = (FiniteMap OrigName RnName, -- WiredIn Ids - FiniteMap OrigName RnName) -- WiredIn TyCons - -- Two maps because "[]" is in both... - -type BuiltinKeys = FiniteMap OrigName (Unique, Name -> RnName) - -- Names with known uniques - -type BuiltinIdInfos = UniqFM IdInfo -- Info for known unique Ids - -builtinNameInfo - = if opt_HideBuiltinNames then - ( - (emptyFM, emptyFM), - emptyFM, - emptyUFM - ) - else if opt_HideMostBuiltinNames then - ( - (listToFM min_assoc_val_wired, listToFM min_assoc_tc_wired), - emptyFM, - emptyUFM - ) - else - ( - (listToFM assoc_val_wired, listToFM assoc_tc_wired), - listToFM assoc_keys, - listToUFM assoc_id_infos - ) +builtinNames :: Bag Name +builtinNames + = unionManyBags + [ -- Wired in TyCons + unionManyBags (map getTyConNames wired_in_tycons) - where - min_assoc_val_wired -- min needed when compiling bits of Prelude - = concat [ - -- data constrs - concat (map pcDataConWiredInInfo g_con_tycons), - concat (map pcDataConWiredInInfo min_nonprim_tycon_list), - - -- values - map pcIdWiredInInfo wired_in_ids, - primop_ids - ] - min_assoc_tc_wired - = concat [ - -- tycons - map pcTyConWiredInInfo prim_tycons, - map pcTyConWiredInInfo g_tycons, - map pcTyConWiredInInfo min_nonprim_tycon_list - ] - - assoc_val_wired - = concat [ - -- data constrs - concat (map pcDataConWiredInInfo g_con_tycons), - concat (map pcDataConWiredInInfo data_tycons), - - -- values - map pcIdWiredInInfo wired_in_ids, - primop_ids - ] - assoc_tc_wired - = concat [ - -- tycons - map pcTyConWiredInInfo prim_tycons, - map pcTyConWiredInInfo g_tycons, - map pcTyConWiredInInfo data_tycons - ] - - assoc_keys - = concat - [ - id_keys, - tysyn_keys, - class_keys, - class_op_keys - ] - - id_keys = map id_key id_keys_infos - id_key (str_mod, uniq, info) = (str_mod, (uniq, RnImplicit)) - - assoc_id_infos = catMaybes (map assoc_info id_keys_infos) - assoc_info (str_mod, uniq, Just info) = Just (uniq, info) - assoc_info (str_mod, uniq, Nothing) = Nothing + -- Wired in Ids + , listToBag (map getName wired_in_ids) + + -- 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 +\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. -The WiredIn TyCons and DataCons ... + +%************************************************************************ +%* * +\subsection{Wired in TyCons} +%* * +%************************************************************************ + \begin{code} +wired_in_tycons = [funTyCon] ++ + prim_tycons ++ + tuple_tycons ++ + unboxed_tuple_tycons ++ + data_tycons prim_tycons = [ addrPrimTyCon @@ -154,34 +162,24 @@ prim_tycons , doublePrimTyCon , floatPrimTyCon , intPrimTyCon + , int64PrimTyCon , foreignObjPrimTyCon + , weakPrimTyCon , mutableArrayPrimTyCon , mutableByteArrayPrimTyCon - , synchVarPrimTyCon + , mVarPrimTyCon + , mutVarPrimTyCon , realWorldTyCon , stablePtrPrimTyCon + , stableNamePrimTyCon , statePrimTyCon + , threadIdPrimTyCon , wordPrimTyCon + , word64PrimTyCon ] -g_tycons - = mkFunTyCon : g_con_tycons - -g_con_tycons - = listTyCon : mkTupleTyCon 0 : [mkTupleTyCon i | i <- [2..32] ] - -min_nonprim_tycon_list -- used w/ HideMostBuiltinNames - = [ boolTyCon - , charTyCon - , intTyCon - , floatTyCon - , doubleTyCon - , integerTyCon - , liftTyCon - , return2GMPsTyCon -- ADR asked for these last two (WDP 94/11) - , returnIntAndGMPTyCon - ] - +tuple_tycons = unitTyCon : [tupleTyCon i | i <- [2..37] ] +unboxed_tuple_tycons = [unboxedTupleTyCon i | i <- [1..37] ] data_tycons = [ addrTyCon @@ -189,198 +187,522 @@ data_tycons , charTyCon , doubleTyCon , floatTyCon - , foreignObjTyCon , intTyCon + , int8TyCon + , int16TyCon + , int32TyCon + , int64TyCon , integerTyCon - , liftTyCon - , primIoTyCon - , return2GMPsTyCon - , returnIntAndGMPTyCon - , stTyCon - , stablePtrTyCon - , stateAndAddrPrimTyCon - , stateAndArrayPrimTyCon - , stateAndByteArrayPrimTyCon - , stateAndCharPrimTyCon - , stateAndDoublePrimTyCon - , stateAndFloatPrimTyCon - , stateAndForeignObjPrimTyCon - , stateAndIntPrimTyCon - , stateAndMutableArrayPrimTyCon - , stateAndMutableByteArrayPrimTyCon - , stateAndPtrPrimTyCon - , stateAndStablePtrPrimTyCon - , stateAndSynchVarPrimTyCon - , stateAndWordPrimTyCon - , stateTyCon - , voidTyCon + , listTyCon , wordTyCon + , word8TyCon + , word16TyCon + , word32TyCon + , word64TyCon ] \end{code} -The WiredIn Ids ... -ToDo: Some of these should be moved to id_keys_infos! + +%************************************************************************ +%* * +\subsection{Wired in Ids} +%* * +%************************************************************************ + \begin{code} wired_in_ids - = [ aBSENT_ERROR_ID - , augmentId - , buildId --- , copyableId + = [ -- 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 - , foldlId - , foldrId --- , forkId , iRREFUT_PAT_ERROR_ID - , integerMinusOneId - , integerPlusOneId - , integerPlusTwoId - , integerZeroId , nON_EXHAUSTIVE_GUARDS_ERROR_ID - , nO_DEFAULT_METHOD_ERROR_ID - , nO_EXPLICIT_METHOD_ERROR_ID --- , noFollowId + , nO_METHOD_BINDING_ERROR_ID , pAR_ERROR_ID , pAT_ERROR_ID - , packStringForCId --- , parAtAbsId --- , parAtForNowId --- , parAtId --- , parAtRelId --- , parGlobalId --- , parId --- , parLocalId , rEC_CON_ERROR_ID , rEC_UPD_ERROR_ID + + -- These two can't be defined in Haskell , realWorldPrimId - , runSTId --- , seqId - , tRACE_ID - , unpackCString2Id - , unpackCStringAppendId - , unpackCStringFoldrId - , unpackCStringId - , voidId + , unsafeCoerceId + ] + +\end{code} + +%************************************************************************ +%* * +\subsection{Thin air entities} +%* * +%************************************************************************ + +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. + +\begin{code} +thinAirIdNames + = map mkKnownKeyGlobal + [ + -- Needed for converting literals to Integers (used in tidyCoreExpr) + (varQual pREL_BASE SLIT("addr2Integer"), addr2IntegerIdKey) + + -- 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) ] -pcTyConWiredInInfo :: TyCon -> (OrigName, RnName) -pcTyConWiredInInfo tc = (origName "pcTyConWiredInInfo" tc, WiredInTyCon tc) +thinAirModules = [pREL_PACK] -- See notes with RnIfaces.findAndReadIface -pcDataConWiredInInfo :: TyCon -> [(OrigName, RnName)] -pcDataConWiredInInfo tycon - = [ (origName "pcDataConWiredInInfo" con, WiredInId con) | con <- tyConDataCons tycon ] +noRepIntegerIds = [addr2IntegerId] -pcIdWiredInInfo :: Id -> (OrigName, RnName) -pcIdWiredInInfo id = (origName "pcIdWiredInInfo" id, WiredInId id) +noRepStrIds = [unpackCString2Id, unpackCStringId] + +addr2IntegerId = lookupThinAirId addr2IntegerIdKey + +packStringForCId = lookupThinAirId packCStringIdKey +unpackCStringId = lookupThinAirId unpackCStringIdKey +unpackCString2Id = lookupThinAirId unpackCString2IdKey +unpackCStringAppendId = lookupThinAirId unpackCStringAppendIdKey +unpackCStringFoldrId = lookupThinAirId unpackCStringFoldrIdKey + +foldrId = lookupThinAirId foldrIdKey \end{code} -WiredIn primitive numeric operations ... + \begin{code} -primop_ids - = map prim_fn allThePrimOps ++ map funny_fn funny_name_primops +\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 - prim_fn op = case (primOpNameInfo op) of (s,n) -> ((OrigName gHC_BUILTINS s),n) - funny_fn (op,s) = case (primOpNameInfo op) of (_,n) -> ((OrigName gHC_BUILTINS s),n) - -funny_name_primops - = [ (IntAddOp, SLIT("+#")) - , (IntSubOp, SLIT("-#")) - , (IntMulOp, SLIT("*#")) - , (IntGtOp, SLIT(">#")) - , (IntGeOp, SLIT(">=#")) - , (IntEqOp, SLIT("==#")) - , (IntNeOp, SLIT("/=#")) - , (IntLtOp, SLIT("<#")) - , (IntLeOp, SLIT("<=#")) - , (DoubleAddOp, SLIT("+##")) - , (DoubleSubOp, SLIT("-##")) - , (DoubleMulOp, SLIT("*##")) - , (DoubleDivOp, SLIT("/##")) - , (DoublePowerOp, SLIT("**##")) - , (DoubleGtOp, SLIT(">##")) - , (DoubleGeOp, SLIT(">=##")) - , (DoubleEqOp, SLIT("==##")) - , (DoubleNeOp, SLIT("/=##")) - , (DoubleLtOp, SLIT("<##")) - , (DoubleLeOp, SLIT("<=##")) - ] + 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 \end{code} -Ids, Synonyms, Classes and ClassOps with builtin keys. -For the Ids we may also have some builtin IdInfo. +%************************************************************************ +%* * +\subsection{Built-in keys} +%* * +%************************************************************************ + +Ids, Synonyms, Classes and ClassOps with builtin keys. + \begin{code} -id_keys_infos :: [(OrigName, Unique, Maybe IdInfo)] -id_keys_infos - = [ -- here so we can check the type of main/mainPrimIO - (OrigName SLIT("Main") SLIT("main"), mainIdKey, Nothing) - , (OrigName SLIT("GHCmain") SLIT("mainPrimIO"), mainPrimIOIdKey, Nothing) - - -- here because we use them in derived instances - , (OrigName pRELUDE SLIT("&&"), andandIdKey, Nothing) - , (OrigName pRELUDE SLIT("."), composeIdKey, Nothing) - , (OrigName gHC__ SLIT("lex"), lexIdKey, Nothing) - , (OrigName pRELUDE SLIT("not"), notIdKey, Nothing) - , (OrigName pRELUDE SLIT("readParen"), readParenIdKey, Nothing) - , (OrigName pRELUDE SLIT("showParen"), showParenIdKey, Nothing) - , (OrigName pRELUDE SLIT("showString"), showStringIdKey,Nothing) - , (OrigName gHC__ SLIT("readList__"), ureadListIdKey, Nothing) - , (OrigName gHC__ SLIT("showList__"), ushowListIdKey, Nothing) - , (OrigName gHC__ SLIT("showSpace"), showSpaceIdKey, Nothing) +mkKnownKeyGlobal :: (RdrName, Unique) -> Name +mkKnownKeyGlobal (rdr_name, uniq) + = mkGlobalName uniq (rdrNameModule rdr_name) (rdrNameOcc rdr_name) + systemProvenance + +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) + + -- 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 = nameRdrName (getName (mkPrimitiveId op)) + +main_RDR = varQual mAIN SLIT("main") +otherwiseId_RDR = varQual pREL_BASE SLIT("otherwise") + +intTyCon_RDR = nameRdrName (getName intTyCon) +ioTyCon_RDR = tcQual pREL_IO_BASE SLIT("IO") +ioDataCon_RDR = dataQual 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 = dataQual 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_STABLE SLIT("StablePtr") +stablePtrDataCon_RDR = dataQual pREL_STABLE SLIT("StablePtr") +deRefStablePtr_RDR = varQual pREL_STABLE SLIT("deRefStablePtr") +makeStablePtr_RDR = varQual pREL_STABLE SLIT("makeStablePtr") + +eqClass_RDR = clsQual pREL_BASE SLIT("Eq") +ordClass_RDR = clsQual pREL_BASE SLIT("Ord") +boundedClass_RDR = clsQual pREL_BASE SLIT("Bounded") +numClass_RDR = clsQual pREL_BASE SLIT("Num") +enumClass_RDR = clsQual pREL_BASE SLIT("Enum") +monadClass_RDR = clsQual pREL_BASE SLIT("Monad") +monadPlusClass_RDR = clsQual pREL_BASE SLIT("MonadPlus") +functorClass_RDR = clsQual pREL_BASE SLIT("Functor") +showClass_RDR = clsQual pREL_BASE SLIT("Show") +realClass_RDR = clsQual pREL_NUM SLIT("Real") +integralClass_RDR = clsQual pREL_NUM SLIT("Integral") +fractionalClass_RDR = clsQual pREL_NUM SLIT("Fractional") +floatingClass_RDR = clsQual pREL_NUM SLIT("Floating") +realFracClass_RDR = clsQual pREL_NUM SLIT("RealFrac") +realFloatClass_RDR = clsQual pREL_NUM SLIT("RealFloat") +readClass_RDR = clsQual pREL_READ SLIT("Read") +ixClass_RDR = clsQual iX SLIT("Ix") +ccallableClass_RDR = clsQual pREL_GHC SLIT("CCallable") +creturnableClass_RDR = clsQual 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 = dataQual pREL_BASE SLIT("LT") +eqTag_RDR = dataQual pREL_BASE SLIT("EQ") +gtTag_RDR = dataQual 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 = dataQual pREL_BASE SLIT("False") +true_RDR = dataQual 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 mONAD SLIT("concat") +filter_RDR = varQual mONAD 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 = dataQual 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} -tysyn_keys - = [ (OrigName gHC__ SLIT("IO"), (iOTyConKey, RnImplicitTyCon)) - , (OrigName pRELUDE SLIT("Ordering"), (orderingTyConKey, RnImplicitTyCon)) - , (OrigName rATIO SLIT("Rational"), (rationalTyConKey, RnImplicitTyCon)) - , (OrigName rATIO SLIT("Ratio"), (ratioTyConKey, RnImplicitTyCon)) +\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 +\end{code} + + +%************************************************************************ +%* * +\subsection[Class-std-groups]{Standard groups of Prelude classes} +%* * +%************************************************************************ + +@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} + + +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. --- this "class_keys" list *must* include: --- classes that are grabbed by key (e.g., eqClassKey) --- classes in "Class.standardClassKeys" (quite a few) - -class_keys - = [ (str_mod, (k, RnImplicitClass)) | (str_mod,k) <- - [ (OrigName pRELUDE SLIT("Eq"), eqClassKey) -- mentioned, derivable - , (OrigName pRELUDE SLIT("Eval"), evalClassKey) -- mentioned - , (OrigName pRELUDE SLIT("Ord"), ordClassKey) -- derivable - , (OrigName pRELUDE SLIT("Num"), numClassKey) -- mentioned, numeric - , (OrigName pRELUDE SLIT("Real"), realClassKey) -- numeric - , (OrigName pRELUDE SLIT("Integral"), integralClassKey) -- numeric - , (OrigName pRELUDE SLIT("Fractional"), fractionalClassKey) -- numeric - , (OrigName pRELUDE SLIT("Floating"), floatingClassKey) -- numeric - , (OrigName pRELUDE SLIT("RealFrac"), realFracClassKey) -- numeric - , (OrigName pRELUDE SLIT("RealFloat"), realFloatClassKey) -- numeric - , (OrigName iX SLIT("Ix"), ixClassKey) -- derivable (but it isn't Prelude.Ix; hmmm) - , (OrigName pRELUDE SLIT("Bounded"), boundedClassKey) -- derivable - , (OrigName pRELUDE SLIT("Enum"), enumClassKey) -- derivable - , (OrigName pRELUDE SLIT("Show"), showClassKey) -- derivable - , (OrigName pRELUDE SLIT("Read"), readClassKey) -- derivable - , (OrigName pRELUDE SLIT("Monad"), monadClassKey) - , (OrigName pRELUDE SLIT("MonadZero"), monadZeroClassKey) - , (OrigName pRELUDE SLIT("MonadPlus"), monadPlusClassKey) - , (OrigName pRELUDE SLIT("Functor"), functorClassKey) - , (OrigName gHC__ SLIT("CCallable"), cCallableClassKey) -- mentioned, ccallish - , (OrigName gHC__ SLIT("CReturnable"), cReturnableClassKey) -- mentioned, ccallish - ]] - -class_op_keys - = [ (str_mod, (k, RnImplicit)) | (str_mod,k) <- - [ (OrigName pRELUDE SLIT("fromInt"), fromIntClassOpKey) - , (OrigName pRELUDE SLIT("fromInteger"), fromIntegerClassOpKey) - , (OrigName pRELUDE SLIT("fromRational"), fromRationalClassOpKey) - , (OrigName pRELUDE SLIT("enumFrom"), enumFromClassOpKey) - , (OrigName pRELUDE SLIT("enumFromThen"), enumFromThenClassOpKey) - , (OrigName pRELUDE SLIT("enumFromTo"), enumFromToClassOpKey) - , (OrigName pRELUDE SLIT("enumFromThenTo"),enumFromThenToClassOpKey) - , (OrigName pRELUDE SLIT("=="), eqClassOpKey) - , (OrigName pRELUDE SLIT(">>="), thenMClassOpKey) - , (OrigName pRELUDE SLIT("zero"), zeroClassOpKey) - ]] +\begin{code} +isCcallishClass, isCreturnableClass, isNoDictClass, + 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} -ToDo: make it do the ``like'' part properly (as in 0.26 and before). + +%************************************************************************ +%* * +\subsection{Local helpers} +%* * +%************************************************************************ + \begin{code} -maybeCharLikeTyCon tc = if (uniqueOf tc == charDataConKey) then Just charDataCon else Nothing -maybeIntLikeTyCon tc = if (uniqueOf tc == intDataConKey) then Just intDataCon else Nothing +varQual = mkPreludeQual varName +dataQual = mkPreludeQual dataName +tcQual = mkPreludeQual tcName +clsQual = mkPreludeQual clsName \end{code} +