X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Frename%2FParseIface.y;h=40cc45165a7c924cbadf588ae918c680968709fe;hb=111cee3f1ad93816cb828e38b38521d85c3bcebb;hp=f083712cce2b19ae6968290f83f4a26c12e46b26;hpb=c49d51f812da9b1c2ceca7e0dad8f2a3626041a9;p=ghc-hetmet.git diff --git a/ghc/compiler/rename/ParseIface.y b/ghc/compiler/rename/ParseIface.y index f083712..40cc451 100644 --- a/ghc/compiler/rename/ParseIface.y +++ b/ghc/compiler/rename/ParseIface.y @@ -1,290 +1,873 @@ { -#include "HsVersions.h" - -module ParseIface ( - parseIface, - - ParsedIface(..), RdrIfaceDecl(..), - - ExportsMap(..), LocalDefsMap(..), LocalPragmasMap(..), - LocalVersionsMap(..), PragmaStuff(..) - - ) where +module ParseIface ( parseIface, IfaceStuff(..) ) where -import Ubiq{-uitous-} +#include "HsVersions.h" -import HsSyn ( ClassDecl, InstDecl, TyDecl, PolyType, InPat, Fake ) -import RdrHsSyn ( RdrNameTyDecl(..), RdrNameClassDecl(..), - RdrNamePolyType(..), RdrNameInstDecl(..) +import HsSyn -- quite a bit of stuff +import RdrHsSyn -- oodles of synonyms +import HsTypes ( mkHsForAllTy, mkHsUsForAllTy ) +import HsCore +import Literal ( Literal(..), mkMachInt, mkMachInt64, mkMachWord, mkMachWord64 ) +import BasicTypes ( Fixity(..), FixityDirection(..), + NewOrData(..), Version + ) +import CostCentre ( CostCentre(..), IsCafCC(..), IsDupdCC(..) ) +import CallConv ( cCallConv ) +import HsPragmas ( noDataPragmas, noClassPragmas ) +import Type ( Kind, mkArrowKind, boxedTypeKind, openTypeKind, UsageAnn(..) ) +import IdInfo ( ArityInfo, exactArity, CprInfo(..), InlinePragInfo(..) ) +import PrimOp ( CCall(..), CCallTarget(..) ) +import Lex + +import RnMonad ( ImportVersion, LocalVersion, ParsedIface(..), WhatsImported(..), + RdrNamePragma, ExportItem, RdrAvailInfo, GenAvailInfo(..), + WhetherHasOrphans, IsBootInterface + ) +import Bag ( emptyBag, unitBag, snocBag ) +import FiniteMap ( emptyFM, unitFM, addToFM, plusFM, bagToFM, FiniteMap ) +import RdrName ( RdrName, mkRdrUnqual, mkSysQual, mkSysUnqual, mkRdrNameWkr ) +import Name ( OccName, Provenance ) +import OccName ( mkSysOccFS, + tcName, varName, ipName, dataName, clsName, tvName, uvName, + EncodedFS ) -import FiniteMap ( emptyFM, listToFM, fmToList, lookupFM, keysFM, FiniteMap ) -import Name ( ExportFlag(..) ) -import Util ( startsWith ) ------------------------------------------------------------------ - -parseIface = parseIToks . lexIface - -type LocalVersionsMap = FiniteMap FAST_STRING Version -type ExportsMap = FiniteMap FAST_STRING (RdrName, ExportFlag) -type LocalDefsMap = FiniteMap FAST_STRING RdrIfaceDecl -type LocalPragmasMap = FiniteMap FAST_STRING PragmaStuff - -type PragmaStuff = String - -data ParsedIface - = ParsedIface - Module -- Module name - Version -- Module version number - (Maybe Version) -- Source version number - LocalVersionsMap -- Local version numbers - ExportsMap -- Exported names - [Module] -- Special instance modules - LocalDefsMap -- Local names defined - [RdrIfaceDecl] -- Local instance declarations - LocalPragmasMap -- Pragmas for local names - -{- -instance Text ParsedIface where - showsPrec _ (ParsedIface m v mv lcm exm ims ldm lids ldp) - = showString "interface " - . showString (_UNPK_ m) - . showChar ' ' - . showInt v - . showString "\n__versions__\n" - . showList (fmToList lcm) - . showString "\n__exports__\n" - . showList (fmToList exm) - . showString "\n__instance_modules__\n" - . showList (map _UNPK_ ims) - . showString "\n__declarations__\n" - . showList (map _UNPK_ (keysFM ldm)) - . showString "\n__instances__\n" - . showList lids - . showString "\n__pragmas__\n" - . showList (map _UNPK_ (keysFM ldp)) --} - ------------------------------------------------------------------ - -data RdrIfaceDecl - = TypeSig RdrName Bool SrcLoc RdrNameTyDecl - | NewTypeSig RdrName RdrName Bool SrcLoc RdrNameTyDecl - | DataSig RdrName [RdrName] Bool SrcLoc RdrNameTyDecl - | ClassSig RdrName [RdrName] Bool SrcLoc RdrNameClassDecl - | ValSig RdrName Bool SrcLoc RdrNamePolyType - | InstSig RdrName RdrName Bool SrcLoc RdrNameInstDecl - -- True => Source Iface decl ------------ -type Version = Int - ------------------------------------------------------------------ +import Module ( ModuleName, mkSysModuleFS ) +import PrelInfo ( mkTupConRdrName, mkUbxTupConRdrName ) +import SrcLoc ( SrcLoc ) +import Maybes +import Outputable + +import GlaExts +import FastString ( tailFS ) + +#if __HASKELL1__ > 4 +import Ratio ( (%) ) +#endif } -%name parseIToks -%tokentype { IfaceToken } +%name parseIface +%tokentype { Token } +%monad { P }{ thenP }{ returnP } +%lexer { lexer } { ITeof } %token - interface { ITinterface } - versions_part { ITversions } - exports_part { ITexports } - instance_modules_part { ITinstance_modules } - instances_part { ITinstances } - declarations_part { ITdeclarations } - pragmas_part { ITpragmas } - data { ITdata } - type { ITtype } - newtype { ITnewtype } - class { ITclass } - where { ITwhere } - instance { ITinstance } - bar { ITbar } - colons { ITcolons } - comma { ITcomma } - dblrarrow { ITdblrarrow } - dot { ITdot } - dotdot { ITdotdot } - equal { ITequal } - lbrace { ITlbrace } - lbrack { ITlbrack } - lparen { ITlparen } - rarrow { ITrarrow } - rbrace { ITrbrace } - rbrack { ITrbrack } - rparen { ITrparen } - semicolon { ITsemicolon } - num { ITnum $$ } - name { ITname $$ } + 'case' { ITcase } -- Haskell keywords + 'class' { ITclass } + 'data' { ITdata } + 'default' { ITdefault } + 'deriving' { ITderiving } + 'do' { ITdo } + 'else' { ITelse } + 'if' { ITif } + 'import' { ITimport } + 'in' { ITin } + 'infix' { ITinfix } + 'infixl' { ITinfixl } + 'infixr' { ITinfixr } + 'instance' { ITinstance } + 'let' { ITlet } + 'module' { ITmodule } + 'newtype' { ITnewtype } + 'of' { ITof } + 'then' { ITthen } + 'type' { ITtype } + 'where' { ITwhere } + 'as' { ITas } + 'qualified' { ITqualified } + 'hiding' { IThiding } + + 'forall' { ITforall } -- GHC extension keywords + 'foreign' { ITforeign } + 'export' { ITexport } + 'label' { ITlabel } + 'dynamic' { ITdynamic } + 'unsafe' { ITunsafe } + 'with' { ITwith } + + '__interface' { ITinterface } -- interface keywords + '__export' { IT__export } + '__forall' { IT__forall } + '__depends' { ITdepends } + '__letrec' { ITletrec } + '__coerce' { ITcoerce } + '__inline_call'{ ITinlineCall } + '__inline_me' { ITinlineMe } + '__DEFAULT' { ITdefaultbranch } + '__bot' { ITbottom } + '__integer' { ITinteger_lit } + '__float' { ITfloat_lit } + '__word' { ITword_lit } + '__int64' { ITint64_lit } + '__word64' { ITword64_lit } + '__rational' { ITrational_lit } + '__addr' { ITaddr_lit } + '__litlit' { ITlit_lit } + '__string' { ITstring_lit } + '__ccall' { ITccall $$ } + '__scc' { ITscc } + '__sccC' { ITsccAllCafs } + + '__u' { ITusage } + '__fuall' { ITfuall } + + '__A' { ITarity } + '__P' { ITspecialise } + '__C' { ITnocaf } + '__U' { ITunfold $$ } + '__S' { ITstrict $$ } + '__R' { ITrules } + '__M' { ITcprinfo } + '__D' { ITdeprecated } + + '..' { ITdotdot } -- reserved symbols + '::' { ITdcolon } + '=' { ITequal } + '\\' { ITlam } + '|' { ITvbar } + '<-' { ITlarrow } + '->' { ITrarrow } + '@' { ITat } + '~' { ITtilde } + '=>' { ITdarrow } + '-' { ITminus } + '!' { ITbang } + + '/\\' { ITbiglam } -- GHC-extension symbols + + '{' { ITocurly } -- special symbols + '}' { ITccurly } + '[' { ITobrack } + ']' { ITcbrack } + '(' { IToparen } + ')' { ITcparen } + '(#' { IToubxparen } + '#)' { ITcubxparen } + ';' { ITsemi } + ',' { ITcomma } + + VARID { ITvarid $$ } -- identifiers + CONID { ITconid $$ } + VARSYM { ITvarsym $$ } + CONSYM { ITconsym $$ } + QVARID { ITqvarid $$ } + QCONID { ITqconid $$ } + QVARSYM { ITqvarsym $$ } + QCONSYM { ITqconsym $$ } + + IPVARID { ITipvarid $$ } -- GHC extension + + PRAGMA { ITpragma $$ } + + CHAR { ITchar $$ } + STRING { ITstring $$ } + INTEGER { ITinteger $$ } + RATIONAL { ITrational $$ } + CLITLIT { ITlitlit $$ } + + UNKNOWN { ITunknown $$ } %% -Iface :: { ParsedIface } -Iface : interface name num - VersionsPart ExportsPart InstanceModulesPart - DeclsPart InstancesPart PragmasPart - { ParsedIface $2 (fromInteger $3) Nothing{-src version-} - $4 -- local versions - $5 -- exports map - $6 -- instance modules - $7 -- decls map - $8 -- local instances - $9 -- pragmas map - } - -VersionsPart :: { LocalVersionsMap } -VersionsPart : versions_part NameVersionPairs - { listToFM $2 } - -NameVersionPairs :: { [(FAST_STRING, Int)] } -NameVersionPairs : NameVersionPairs name lparen num rparen - { ($2, fromInteger $4) : $1 } - | { [] } - -ExportsPart :: { ExportsMap } -ExportsPart : exports_part ExportItems - { listToFM $2 } - -ExportItems :: { [(FAST_STRING, (RdrName, ExportFlag))] } -ExportItems : ExportItems name dot name MaybeDotDot - { ($4, (Qual $2 $4, $5)) : $1 } - | { [] } - -MaybeDotDot :: { ExportFlag } -MaybeDotDot : dotdot { ExportAll } - | { ExportAbs } - -InstanceModulesPart :: { [Module] } -InstanceModulesPart : instance_modules_part ModList - { $2 } - -ModList :: { [Module] } -ModList : ModList name { $2 : $1 } - | { [] } - -DeclsPart :: { LocalDefsMap } -DeclsPart : declarations_part - { emptyFM } - -InstancesPart :: { [RdrIfaceDecl] } -InstancesPart : instances_part - { [] } - -PragmasPart :: { LocalPragmasMap } -PragmasPart : pragmas_part - { emptyFM } +-- iface_stuff is the main production. +-- It recognises (a) a whole interface file +-- (b) a type (so that type sigs can be parsed lazily) +-- (c) the IdInfo part of a signature (same reason) + +iface_stuff :: { IfaceStuff } +iface_stuff : iface { let (nm, iff) = $1 in PIface nm iff } + | type { PType $1 } + | id_info { PIdInfo $1 } + | '__R' rules { PRules $2 } + | '__D' deprecs { PDeprecs $2 } + + +iface :: { (ModuleName, ParsedIface) } +iface : '__interface' mod_fs INTEGER orphans checkVersion 'where' + exports_part + import_part + instance_decl_part + decls_part + rules_and_deprecs + { ( $2 -- Module name + , ParsedIface { + pi_mod = fromInteger $3, -- Module version + pi_orphan = $4, + pi_exports = $7, -- Exports + pi_usages = $8, -- Usages + pi_insts = $9, -- Local instances + pi_decls = $10, -- Decls + pi_rules = fst $11, -- Rules + pi_deprecs = snd $11 -- Deprecations + } ) } + +-------------------------------------------------------------------------- + +import_part :: { [ImportVersion OccName] } +import_part : { [] } + | import_part import_decl { $2 : $1 } + +import_decl :: { ImportVersion OccName } +import_decl : 'import' mod_fs INTEGER orphans is_boot whats_imported ';' + { (mkSysModuleFS $2, fromInteger $3, $4, $5, $6) } + -- import Foo 3 :: a 1 b 3 c 7 ; means import a,b,c from Foo + -- import Foo 3 ; means import all of Foo + -- import Foo 3 ! @ :: ...stuff... ; the ! means that Foo contains orphans + -- and @ that Foo is a boot interface + +orphans :: { WhetherHasOrphans } +orphans : { False } + | '!' { True } + +is_boot :: { IsBootInterface } +is_boot : { False } + | '@' { True } + +whats_imported :: { WhatsImported OccName } +whats_imported : { Everything } + | '::' name_version_pairs { Specifically $2 } + +name_version_pairs :: { [LocalVersion OccName] } +name_version_pairs : { [] } + | name_version_pair name_version_pairs { $1 : $2 } + +name_version_pair :: { LocalVersion OccName } +name_version_pair : var_occ INTEGER { ($1, fromInteger $2) } + | tc_occ INTEGER { ($1, fromInteger $2) } + + +-------------------------------------------------------------------------- + +exports_part :: { [ExportItem] } +exports_part : { [] } + | exports_part '__export' + mod_fs entities ';' { (mkSysModuleFS $3, $4) : $1 } + +entities :: { [RdrAvailInfo] } +entities : { [] } + | entity entities { $1 : $2 } + +entity :: { RdrAvailInfo } +entity : tc_occ { AvailTC $1 [$1] } + | var_occ { Avail $1 } + | tc_occ stuff_inside { AvailTC $1 ($1:$2) } + | tc_occ '|' stuff_inside { AvailTC $1 $3 } + +stuff_inside :: { [OccName] } +stuff_inside : '{' val_occs '}' { $2 } + +val_occ :: { OccName } + : var_occ { $1 } + | data_occ { $1 } + +val_occs :: { [OccName] } + : val_occ { [$1] } + | val_occ val_occs { $1 : $2 } + + +-------------------------------------------------------------------------- + +fixity :: { FixityDirection } +fixity : 'infixl' { InfixL } + | 'infixr' { InfixR } + | 'infix' { InfixN } + +mb_fix :: { Int } +mb_fix : {-nothing-} { 9 } + | INTEGER { (fromInteger $1) } + +----------------------------------------------------------------------------- + +csigs :: { [RdrNameSig] } +csigs : { [] } + | 'where' '{' csigs1 '}' { $3 } + +csigs1 :: { [RdrNameSig] } +csigs1 : csig { [$1] } + | csig ';' csigs1 { $1 : $3 } + +csig :: { RdrNameSig } +csig : src_loc var_name '::' type { mkClassOpSig False $2 $4 $1 } + | src_loc var_name '=' '::' type { mkClassOpSig True $2 $5 $1 } + +-------------------------------------------------------------------------- + +instance_decl_part :: { [RdrNameInstDecl] } +instance_decl_part : {- empty -} { [] } + | instance_decl_part inst_decl { $2 : $1 } + +inst_decl :: { RdrNameInstDecl } +inst_decl : src_loc 'instance' type '=' var_name ';' + { InstDecl $3 + EmptyMonoBinds {- No bindings -} + [] {- No user pragmas -} + $5 {- Dfun id -} + $1 + } + +-------------------------------------------------------------------------- + +decls_part :: { [(Version, RdrNameHsDecl)] } +decls_part + : {- empty -} { [] } + | decls_part version decl ';' { ($2,$3):$1 } + +decl :: { RdrNameHsDecl } +decl : src_loc var_name '::' type maybe_idinfo + { SigD (IfaceSig $2 $4 ($5 $2) $1) } + | src_loc 'type' tc_name tv_bndrs '=' type + { TyClD (TySynonym $3 $4 $6 $1) } + | src_loc 'data' decl_context tc_name tv_bndrs constrs + { TyClD (TyData DataType $3 $4 $5 $6 Nothing noDataPragmas $1) } + | src_loc 'newtype' decl_context tc_name tv_bndrs newtype_constr + { TyClD (TyData NewType $3 $4 $5 $6 Nothing noDataPragmas $1) } + | src_loc 'class' decl_context tc_name tv_bndrs fds csigs + { TyClD (mkClassDecl $3 $4 $5 $6 $7 EmptyMonoBinds + noClassPragmas $1) } + | src_loc fixity mb_fix var_or_data_name + { FixD (FixitySig $4 (Fixity $3 $2) $1) } + +maybe_idinfo :: { RdrName -> [HsIdInfo RdrName] } +maybe_idinfo : {- empty -} { \_ -> [] } + | pragma { \x -> case $1 of + POk _ (PIdInfo id_info) -> id_info + PFailed err -> + pprPanic "IdInfo parse failed" + (vcat [ppr x, err]) + } + +pragma :: { ParseResult IfaceStuff } +pragma : src_loc PRAGMA { parseIface $2 PState{ bol = 0#, atbol = 1#, + context = [], + glasgow_exts = 1#, + loc = $1 } + } + +----------------------------------------------------------------------------- + +rules_and_deprecs :: { ([RdrNameRuleDecl], [RdrNameDeprecation]) } +rules_and_deprecs : {- empty -} { ([], []) } + | rules_and_deprecs rule_or_deprec + { let + append2 (xs1,ys1) (xs2,ys2) = + (xs1 `app` xs2, ys1 `app` ys2) + xs `app` [] = xs -- performance paranoia + xs `app` ys = xs ++ ys + in append2 $1 $2 + } + +rule_or_deprec :: { ([RdrNameRuleDecl], [RdrNameDeprecation]) } +rule_or_deprec : pragma { case $1 of + POk _ (PRules rules) -> (rules,[]) + POk _ (PDeprecs deprecs) -> ([],deprecs) + PFailed err -> pprPanic "Rules/Deprecations parse failed" err + } + +----------------------------------------------------------------------------- + +rules :: { [RdrNameRuleDecl] } + : {- empty -} { [] } + | rule ';' rules { $1:$3 } + +rule :: { RdrNameRuleDecl } +rule : src_loc STRING rule_forall qvar_name + core_args '=' core_expr { IfaceRuleDecl $4 (UfRuleBody $2 $3 $5 $7) $1 } + +rule_forall :: { [UfBinder RdrName] } +rule_forall : '__forall' '{' core_bndrs '}' { $3 } + +----------------------------------------------------------------------------- + +deprecs :: { [RdrNameDeprecation] } +deprecs : {- empty -} { [] } + | deprecs deprec ';' { $2 : $1 } + +deprec :: { RdrNameDeprecation } +deprec : STRING { Deprecation (IEModuleContents undefined) $1 } + | deprec_name STRING { Deprecation $1 $2 } + +-- SUP: TEMPORARY HACK +deprec_name :: { RdrNameIE } + : var_name { IEVar $1 } + | data_name { IEThingAbs $1 } + +----------------------------------------------------------------------------- + +version :: { Version } +version : INTEGER { fromInteger $1 } + +decl_context :: { RdrNameContext } +decl_context : { [] } + | '{' context_list1 '}' '=>' { $2 } + +---------------------------------------------------------------------------- + +constrs :: { [RdrNameConDecl] {- empty for handwritten abstract -} } + : { [] } + | '=' constrs1 { $2 } + +constrs1 :: { [RdrNameConDecl] } +constrs1 : constr { [$1] } + | constr '|' constrs1 { $1 : $3 } + +constr :: { RdrNameConDecl } +constr : src_loc ex_stuff data_name batypes { mk_con_decl $3 $2 (VanillaCon $4) $1 } + | src_loc ex_stuff data_name '{' fields1 '}' { mk_con_decl $3 $2 (RecCon $5) $1 } + -- We use "data_fs" so as to include () + +newtype_constr :: { [RdrNameConDecl] {- Empty if handwritten abstract -} } +newtype_constr : { [] } + | src_loc '=' ex_stuff data_name atype { [mk_con_decl $4 $3 (NewCon $5 Nothing) $1] } + | src_loc '=' ex_stuff data_name '{' var_name '::' atype '}' + { [mk_con_decl $4 $3 (NewCon $8 (Just $6)) $1] } + +ex_stuff :: { ([HsTyVar RdrName], RdrNameContext) } +ex_stuff : { ([],[]) } + | '__forall' forall context '=>' { ($2,$3) } + +batypes :: { [RdrNameBangType] } +batypes : { [] } + | batype batypes { $1 : $2 } + +batype :: { RdrNameBangType } +batype : atype { Unbanged $1 } + | '!' atype { Banged $2 } + | '!' '!' atype { Unpacked $3 } + +fields1 :: { [([RdrName], RdrNameBangType)] } +fields1 : field { [$1] } + | field ',' fields1 { $1 : $3 } + +field :: { ([RdrName], RdrNameBangType) } +field : var_names1 '::' type { ($1, Unbanged $3) } + | var_names1 '::' '!' type { ($1, Banged $4) } + | var_names1 '::' '!' '!' type { ($1, Unpacked $5) } +-------------------------------------------------------------------------- + +type :: { RdrNameHsType } +type : '__fuall' fuall '=>' type { mkHsUsForAllTy $2 $4 } + | '__forall' forall context '=>' type + { mkHsForAllTy (Just $2) $3 $5 } + | btype '->' type { MonoFunTy $1 $3 } + | btype { $1 } + +fuall :: { [RdrName] } +fuall : '[' uv_bndrs ']' { $2 } + +forall :: { [HsTyVar RdrName] } +forall : '[' tv_bndrs ']' { $2 } + +context :: { RdrNameContext } +context : { [] } + | '{' context_list1 '}' { $2 } + +context_list1 :: { RdrNameContext } +context_list1 : class { [$1] } + | class ',' context_list1 { $1 : $3 } + +class :: { HsPred RdrName } +class : qcls_name atypes { (HsPClass $1 $2) } + | ipvar_name '::' type { (HsPIParam $1 $3) } + +types0 :: { [RdrNameHsType] {- Zero or more -} } +types0 : {- empty -} { [ ] } + | type { [ $1 ] } + | types2 { $1 } + +types2 :: { [RdrNameHsType] {- Two or more -} } +types2 : type ',' type { [$1,$3] } + | type ',' types2 { $1 : $3 } + +btype :: { RdrNameHsType } +btype : atype { $1 } + | btype atype { MonoTyApp $1 $2 } + | '__u' usage atype { MonoUsgTy $2 $3 } + +usage :: { MonoUsageAnn RdrName } +usage : '-' { MonoUsOnce } + | '!' { MonoUsMany } + | uv_name { MonoUsVar $1 } + +atype :: { RdrNameHsType } +atype : qtc_name { MonoTyVar $1 } + | tv_name { MonoTyVar $1 } + | '(' types2 ')' { MonoTupleTy $2 True{-boxed-} } + | '(#' types0 '#)' { MonoTupleTy $2 False{-unboxed-} } + | '[' type ']' { MonoListTy $2 } + | '{' qcls_name atypes '}' { MonoDictTy $2 $3 } + | '{' ipvar_name '::' type '}' { MonoIParamTy $2 $4 } + | '(' type ')' { $2 } + +-- This one is dealt with via qtc_name +-- | '(' ')' { MonoTupleTy [] True } + +atypes :: { [RdrNameHsType] {- Zero or more -} } +atypes : { [] } + | atype atypes { $1 : $2 } +--------------------------------------------------------------------- +mod_fs :: { EncodedFS } + : CONID { $1 } + +mod_name :: { ModuleName } + : mod_fs { mkSysModuleFS $1 } + + +--------------------------------------------------- +var_fs :: { EncodedFS } + : VARID { $1 } + | '!' { SLIT("!") } + | 'as' { SLIT("as") } + | 'qualified' { SLIT("qualified") } + | 'hiding' { SLIT("hiding") } + | 'forall' { SLIT("forall") } + | 'foreign' { SLIT("foreign") } + | 'export' { SLIT("export") } + | 'label' { SLIT("label") } + | 'dynamic' { SLIT("dynamic") } + | 'unsafe' { SLIT("unsafe") } + | 'with' { SLIT("with") } + +qvar_fs :: { (EncodedFS, EncodedFS) } + : QVARID { $1 } + | QVARSYM { $1 } + +var_occ :: { OccName } + : var_fs { mkSysOccFS varName $1 } + +var_name :: { RdrName } +var_name : var_occ { mkRdrUnqual $1 } + +qvar_name :: { RdrName } +qvar_name : var_name { $1 } + | qvar_fs { mkSysQual varName $1 } + +ipvar_name :: { RdrName } + : IPVARID { mkSysUnqual ipName (tailFS $1) } + +var_names :: { [RdrName] } +var_names : { [] } + | var_name var_names { $1 : $2 } + +var_names1 :: { [RdrName] } +var_names1 : var_name var_names { $1 : $2 } + +--------------------------------------------------- +-- For some bizarre reason, +-- (,,,) is dealt with by the parser +-- Foo.(,,,) is dealt with by the lexer +-- Sigh + +data_fs :: { EncodedFS } + : CONID { $1 } + | CONSYM { $1 } + +qdata_fs :: { (EncodedFS, EncodedFS) } + : QCONID { $1 } + | QCONSYM { $1 } + +data_occ :: { OccName } + : data_fs { mkSysOccFS dataName $1 } + +data_name :: { RdrName } + : data_occ { mkRdrUnqual $1 } + +qdata_name :: { RdrName } +qdata_name : data_name { $1 } + | qdata_fs { mkSysQual dataName $1 } + +qdata_names :: { [RdrName] } +qdata_names : { [] } + | qdata_name qdata_names { $1 : $2 } + +var_or_data_name :: { RdrName } + : var_name { $1 } + | data_name { $1 } + +--------------------------------------------------- +tc_fs :: { EncodedFS } + : data_fs { $1 } + +tc_occ :: { OccName } + : tc_fs { mkSysOccFS tcName $1 } + +tc_name :: { RdrName } + : tc_occ { mkRdrUnqual $1 } + +qtc_name :: { RdrName } + : tc_name { $1 } + | qdata_fs { mkSysQual tcName $1 } + +--------------------------------------------------- +cls_name :: { RdrName } + : data_fs { mkSysUnqual clsName $1 } + +qcls_name :: { RdrName } + : cls_name { $1 } + | qdata_fs { mkSysQual clsName $1 } + +--------------------------------------------------- +uv_name :: { RdrName } + : VARID { mkSysUnqual uvName $1 } + +uv_bndr :: { RdrName } + : uv_name { $1 } + +uv_bndrs :: { [RdrName] } + : { [] } + | uv_bndr uv_bndrs { $1 : $2 } + +--------------------------------------------------- +tv_name :: { RdrName } + : VARID { mkSysUnqual tvName $1 } + | VARSYM { mkSysUnqual tvName $1 {- Allow t2 as a tyvar -} } + +tv_bndr :: { HsTyVar RdrName } + : tv_name '::' akind { IfaceTyVar $1 $3 } + | tv_name { IfaceTyVar $1 boxedTypeKind } + +tv_bndrs :: { [HsTyVar RdrName] } + : { [] } + | tv_bndr tv_bndrs { $1 : $2 } + +--------------------------------------------------- +fds :: { [([RdrName], [RdrName])] } + : {- empty -} { [] } + | '|' fds1 { reverse $2 } + +fds1 :: { [([RdrName], [RdrName])] } + : fds1 ',' fd { $3 : $1 } + | fd { [$1] } + +fd :: { ([RdrName], [RdrName]) } + : varids0 '->' varids0 { (reverse $1, reverse $3) } + +varids0 :: { [RdrName] } + : {- empty -} { [] } + | varids0 tv_name { $2 : $1 } + +--------------------------------------------------- +kind :: { Kind } + : akind { $1 } + | akind '->' kind { mkArrowKind $1 $3 } + +akind :: { Kind } + : VARSYM { if $1 == SLIT("*") then + boxedTypeKind + else if $1 == SLIT("?") then + openTypeKind + else panic "ParseInterface: akind" + } + | '(' kind ')' { $2 } + +-------------------------------------------------------------------------- + +id_info :: { [HsIdInfo RdrName] } + : { [] } + | id_info_item id_info { $1 : $2 } + +id_info_item :: { HsIdInfo RdrName } + : '__A' INTEGER { HsArity (exactArity (fromInteger $2)) } + | '__U' inline_prag core_expr { HsUnfold $2 $3 } + | '__M' { HsCprInfo } + | '__S' { HsStrictness (HsStrictnessInfo $1) } + | '__C' { HsNoCafRefs } + | '__P' qvar_name { HsWorker $2 } + +inline_prag :: { InlinePragInfo } + : {- empty -} { NoInlinePragInfo } + | '[' INTEGER ']' { IMustNotBeINLINEd True (Just (fromInteger $2)) } -- INLINE n + | '[' '!' INTEGER ']' { IMustNotBeINLINEd False (Just (fromInteger $3)) } -- NOINLINE n + +------------------------------------------------------- +core_expr :: { UfExpr RdrName } +core_expr : '\\' core_bndrs '->' core_expr { foldr UfLam $4 $2 } + | 'case' core_expr 'of' var_name + '{' core_alts '}' { UfCase $2 $4 $6 } + + | 'let' '{' core_val_bndr '=' core_expr + '}' 'in' core_expr { UfLet (UfNonRec $3 $5) $8 } + | '__letrec' '{' rec_binds '}' + 'in' core_expr { UfLet (UfRec $3) $6 } + + | '__litlit' STRING atype { UfLitLit $2 $3 } + + | '__inline_me' core_expr { UfNote UfInlineMe $2 } + | '__inline_call' core_expr { UfNote UfInlineCall $2 } + | '__coerce' atype core_expr { UfNote (UfCoerce $2) $3 } + | scc core_expr { UfNote (UfSCC $1) $2 } + | fexpr { $1 } + +fexpr :: { UfExpr RdrName } +fexpr : fexpr core_arg { UfApp $1 $2 } + | core_aexpr { $1 } + +core_arg :: { UfExpr RdrName } + : '@' atype { UfType $2 } + | core_aexpr { $1 } + +core_args :: { [UfExpr RdrName] } + : { [] } + | core_arg core_args { $1 : $2 } + +core_aexpr :: { UfExpr RdrName } -- Atomic expressions +core_aexpr : qvar_name { UfVar $1 } + | qdata_name { UfVar $1 } + -- This one means that e.g. "True" will parse as + -- (UfVar True_Id) rather than (UfCon True_Con []). + -- No big deal; it'll be inlined in a jiffy. I tried + -- parsing it to (Con con []) directly, but got bitten + -- when a real constructor Id showed up in an interface + -- file. As usual, a hack bites you in the end. + -- If you want to get a UfCon, then use the + -- curly-bracket notation (True {}). + +-- This one is dealt with by qdata_name: see above comments +-- | '(' ')' { UfTuple (mkTupConRdrName 0) [] } + + | core_lit { UfLit $1 } + | '(' core_expr ')' { $2 } + + -- Tuple construtors are for the *worker* of the tuple + -- Going direct saves needless messing about + | '(' comma_exprs2 ')' { UfTuple (mkRdrNameWkr (mkTupConRdrName (length $2))) $2 } + | '(#' comma_exprs0 '#)' { UfTuple (mkRdrNameWkr (mkUbxTupConRdrName (length $2))) $2 } + + | '{' '__ccall' ccall_string type '}' + { let + (is_dyn, is_casm, may_gc) = $2 + + target | is_dyn = DynamicTarget (error "CCall dyn target bogus unique") + | otherwise = StaticTarget $3 + + ccall = CCall target is_casm may_gc cCallConv + in + UfCCall ccall $4 + } + + +comma_exprs0 :: { [UfExpr RdrName] } -- Zero or more +comma_exprs0 : {- empty -} { [ ] } + | core_expr { [ $1 ] } + | comma_exprs2 { $1 } + +comma_exprs2 :: { [UfExpr RdrName] } -- Two or more +comma_exprs2 : core_expr ',' core_expr { [$1,$3] } + | core_expr ',' comma_exprs2 { $1 : $3 } + +rec_binds :: { [(UfBinder RdrName, UfExpr RdrName)] } + : { [] } + | core_val_bndr '=' core_expr ';' rec_binds { ($1,$3) : $5 } + +core_alts :: { [UfAlt RdrName] } + : core_alt { [$1] } + | core_alt ';' core_alts { $1 : $3 } + +core_alt :: { UfAlt RdrName } +core_alt : core_pat '->' core_expr { (fst $1, snd $1, $3) } + +core_pat :: { (UfConAlt RdrName, [RdrName]) } +core_pat : core_lit { (UfLitAlt $1, []) } + | '__litlit' STRING atype { (UfLitLitAlt $2 $3, []) } + | qdata_name core_pat_names { (UfDataAlt $1, $2) } + | '(' comma_var_names1 ')' { (UfDataAlt (mkTupConRdrName (length $2)), $2) } + | '(#' comma_var_names1 '#)' { (UfDataAlt (mkUbxTupConRdrName (length $2)), $2) } + | '__DEFAULT' { (UfDefault, []) } + | '(' core_pat ')' { $2 } + +core_pat_names :: { [RdrName] } +core_pat_names : { [] } + | core_pat_name core_pat_names { $1 : $2 } + +-- Tyvar names and variable names live in different name spaces +-- so they need to be signalled separately. But we don't record +-- types or kinds in a pattern; we work that out from the type +-- of the case scrutinee +core_pat_name :: { RdrName } +core_pat_name : var_name { $1 } + | '@' tv_name { $2 } + +comma_var_names1 :: { [RdrName] } -- One or more +comma_var_names1 : var_name { [$1] } + | var_name ',' comma_var_names1 { $1 : $3 } + +core_lit :: { Literal } +core_lit : integer { mkMachInt $1 } + | CHAR { MachChar $1 } + | STRING { MachStr $1 } + | rational { MachDouble $1 } + | '__word' integer { mkMachWord $2 } + | '__word64' integer { mkMachWord64 $2 } + | '__int64' integer { mkMachInt64 $2 } + | '__float' rational { MachFloat $2 } + | '__addr' integer { MachAddr $2 } + +integer :: { Integer } + : INTEGER { $1 } + | '-' INTEGER { (-$2) } + +rational :: { Rational } + : RATIONAL { $1 } + | '-' RATIONAL { (-$2) } + +core_bndr :: { UfBinder RdrName } +core_bndr : core_val_bndr { $1 } + | core_tv_bndr { $1 } + +core_bndrs :: { [UfBinder RdrName] } +core_bndrs : { [] } + | core_bndr core_bndrs { $1 : $2 } + +core_val_bndr :: { UfBinder RdrName } +core_val_bndr : var_name '::' atype { UfValBinder $1 $3 } + +core_tv_bndr :: { UfBinder RdrName } +core_tv_bndr : '@' tv_name '::' akind { UfTyBinder $2 $4 } + | '@' tv_name { UfTyBinder $2 boxedTypeKind } + +ccall_string :: { FAST_STRING } + : STRING { $1 } + | CLITLIT { $1 } + | VARID { $1 } + | CONID { $1 } + +------------------------------------------------------------------------ +scc :: { CostCentre } + : '__sccC' '{' mod_name '}' { AllCafsCC $3 } + | '__scc' '{' cc_name mod_name cc_dup cc_caf '}' + { NormalCC { cc_name = $3, cc_mod = $4, + cc_is_dupd = $5, cc_is_caf = $6 } } + +cc_name :: { EncodedFS } + : CONID { $1 } + | var_fs { $1 } + +cc_dup :: { IsDupdCC } +cc_dup : { OriginalCC } + | '!' { DupdCC } + +cc_caf :: { IsCafCC } + : { NotCafCC } + | '__C' { CafCC } + +------------------------------------------------------------------- + +src_loc :: { SrcLoc } +src_loc : {% getSrcLocP } + +checkVersion :: { () } + : {-empty-} {% checkVersion Nothing } + | INTEGER {% checkVersion (Just (fromInteger $1)) } + +------------------------------------------------------------------- + +-- Haskell code { ------------------------------------------------------------------ -happyError :: Int -> [IfaceToken] -> a -happyError i _ = error ("Parse error in line " ++ show i ++ "\n") - ------------------------------------------------------------------ -data IfaceToken - = ITinterface -- keywords - | ITversions - | ITexports - | ITinstance_modules - | ITinstances - | ITdeclarations - | ITpragmas - | ITdata - | ITtype - | ITnewtype - | ITclass - | ITwhere - | ITinstance - | ITbar -- magic symbols - | ITcolons - | ITcomma - | ITdblrarrow - | ITdot - | ITdotdot - | ITequal - | ITlbrace - | ITlbrack - | ITlparen - | ITrarrow - | ITrbrace - | ITrbrack - | ITrparen - | ITsemicolon - | ITnum Integer -- numbers and names - | ITname FAST_STRING - ------------------------------------------------------------------ -lexIface :: String -> [IfaceToken] - -lexIface str - = case str of - [] -> [] - - -- whitespace and comments - ' ' : cs -> lexIface cs - '\t' : cs -> lexIface cs - '\n' : cs -> lexIface cs - '-' : '-' : cs -> lex_comment cs - '{' : '-' : cs -> lex_nested_comment 1{-one seen-} cs - - '(' : '.' : '.' : ')' : cs -> ITdotdot : lexIface cs - '(' : cs -> ITlparen : lexIface cs - ')' : cs -> ITrparen : lexIface cs - '[' : cs -> ITlbrack : lexIface cs - ']' : cs -> ITrbrack : lexIface cs - '{' : cs -> ITlbrace : lexIface cs - '}' : cs -> ITrbrace : lexIface cs - '-' : '>' : cs -> ITrarrow : lexIface cs - '.' : cs -> ITdot : lexIface cs - '|' : cs -> ITbar : lexIface cs - ':' : ':' : cs -> ITcolons : lexIface cs - '=' : '>' : cs -> ITdblrarrow : lexIface cs - '=' : cs -> ITequal : lexIface cs - ',' : cs -> ITcomma : lexIface cs - ';' : cs -> ITsemicolon : lexIface cs - - '_' : cs -> lex_word str - c : cs | isDigit c -> lex_num str - | isAlpha c -> lex_word str - - other -> error ("lexing:"++other) - where - lex_comment str - = case (span ((/=) '\n') str) of { (junk, rest) -> - lexIface rest } - - lex_nested_comment lvl [] = error "EOF in nested comment in interface" - lex_nested_comment lvl str - = case str of - '{' : '-' : xs -> lex_nested_comment (lvl+1) xs - '-' : '}' : xs -> if lvl == 1 - then lexIface xs - else lex_nested_comment (lvl-1) xs - _ : xs -> lex_nested_comment lvl xs - - lex_num str - = case (span isDigit str) of { (num, rest) -> - ITnum (read num) : lexIface rest } - - lex_word str - = case (span is_word_sym str) of { (word, rest) -> - case (lookupFM keywordsFM word) of { - Nothing -> ITname (_PK_ word) : lexIface rest ; - Just xx -> xx : lexIface rest - }} - where - is_word_sym '_' = True - is_word_sym c = isAlphanum c - - keywordsFM :: FiniteMap String IfaceToken - keywordsFM = listToFM [ - ("interface", ITinterface) - - ,("__versions__", ITversions) - ,("__exports__", ITexports) - ,("__instance_modules__", ITinstance_modules) - ,("__instances__", ITinstances) - ,("__declarations__", ITdeclarations) - ,("__pragmas__", ITpragmas) - - ,("data", ITdata) - ,("class", ITclass) - ,("where", ITwhere) - ,("instance", ITinstance) - ] +happyError :: P a +happyError buf PState{ loc = loc } = PFailed (ifaceParseErr buf loc) + +data IfaceStuff = PIface EncodedFS{-.hi module name-} ParsedIface + | PIdInfo [HsIdInfo RdrName] + | PType RdrNameHsType + | PRules [RdrNameRuleDecl] + | PDeprecs [RdrNameDeprecation] + +mk_con_decl name (ex_tvs, ex_ctxt) details loc = mkConDecl name ex_tvs ex_ctxt details loc }