X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Frename%2FParseIface.y;h=976d3b008ea67e243f07699647f41ecf98e243fb;hb=3cb42c36d549fa3e1861240f996c5813e41c6a70;hp=30c1478f264ebb963419afcbe5e8d5b2d080788f;hpb=3160f854580e6d8df412c8cd34d93bae27175d67;p=ghc-hetmet.git diff --git a/ghc/compiler/rename/ParseIface.y b/ghc/compiler/rename/ParseIface.y index 30c1478..976d3b0 100644 --- a/ghc/compiler/rename/ParseIface.y +++ b/ghc/compiler/rename/ParseIface.y @@ -1,46 +1,84 @@ +{- Notes about the syntax of interface files + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +The header +~~~~~~~~~~ + interface "edison" M 4 6 2 ! 406 Module M, version 4, from package 'edison', + Fixities version 6, rules version 2 + Interface syntax version 406 + ! means M contains orphans + +Import declarations +~~~~~~~~~~~~~~~~~~~ + import Foo ; To compile M I used nothing from Foo, but it's + below me in the hierarchy + + import Foo ! @ ; Ditto, but the ! means that Foo contains orphans + and the @ means that Foo is a boot interface + + import Foo :: 3 ; To compile M I used everything from Foo, which has + module version 3 + + import Foo :: 3 2 6 a 1 b 3 c 7 ; To compile M I used Foo. It had + module version 3 + fixity version 2 + rules version 6 + and some specific things besides. + +-} + + { -module ParseIface ( parseIface, IfaceStuff(..) ) where +module ParseIface ( parseIface, parseType, parseRules, parseIdInfo ) where #include "HsVersions.h" import HsSyn -- quite a bit of stuff import RdrHsSyn -- oodles of synonyms -import HsDecls ( HsIdInfo(..), HsStrictnessInfo(..) ) -import HsTypes ( mkHsForAllTy ) +import HsTypes ( mkHsForAllTy, mkHsTupCon ) import HsCore -import Const ( Literal(..), mkMachInt_safe ) -import BasicTypes ( IfaceFlavour(..), Fixity(..), FixityDirection(..), - NewOrData(..), Version +import Literal ( Literal(..), mkMachInt, mkMachInt64, mkMachWord, mkMachWord64 ) +import BasicTypes ( Fixity(..), FixityDirection(..), StrictnessMark(..), + NewOrData(..), Version, initialVersion, Boxity(..), + Activation(..) ) -import HsPragmas ( noDataPragmas, noClassPragmas ) -import Type ( Kind, mkArrowKind, boxedTypeKind, openTypeKind ) -import IdInfo ( ArityInfo, exactArity ) +import CostCentre ( CostCentre(..), IsCafCC(..), IsDupdCC(..) ) +import Type ( Kind, mkArrowKind, liftedTypeKind, openTypeKind, usageTypeKind ) +import IdInfo ( InlinePragInfo(..) ) +import ForeignCall ( ForeignCall(..), CCallConv(..), CCallSpec(..), CCallTarget(..) ) import Lex -import RnEnv ( ifaceUnqualTC, ifaceUnqualVar, ifaceUnqualTv, ifaceQualVar, ifaceQualTC ) -import RnMonad ( ImportVersion, LocalVersion, ParsedIface(..), WhatsImported(..), - RdrNamePragma, ExportItem, RdrAvailInfo, GenAvailInfo(..) - ) -import Bag ( emptyBag, unitBag, snocBag ) -import FiniteMap ( emptyFM, unitFM, addToFM, plusFM, bagToFM, FiniteMap ) -import Name ( OccName, isTCOcc, Provenance, Module, - varOcc, tcOcc, mkModuleFS +import RnMonad ( ParsedIface(..), ExportItem, IfaceDeprecs ) +import HscTypes ( WhetherHasOrphans, IsBootInterface, GenAvailInfo(..), + ImportVersion, WhatsImported(..), + RdrAvailInfo ) + +import RdrName ( RdrName, mkRdrUnqual, mkIfaceOrig ) +import Name ( OccName ) +import OccName ( mkSysOccFS, + tcName, varName, dataName, clsName, tvName, + EncodedFS ) -import PrelMods ( mkTupNameStr, mkUbxTupNameStr ) -import PrelInfo ( mkTupConRdrName, mkUbxTupConRdrName ) +import Module ( ModuleName, PackageName, mkSysModuleNameFS, mkModule ) import SrcLoc ( SrcLoc ) -import Maybes +import CmdLineOpts ( opt_InPackage, opt_IgnoreIfacePragmas ) import Outputable +import Class ( DefMeth (..) ) import GlaExts +import FastString ( tailFS ) } -%name parseIface -%tokentype { IfaceToken } -%monad { IfM }{ thenIf }{ returnIf } -%lexer { lexIface } { ITeof } +%name parseIface iface +%name parseType type +%name parseIdInfo id_info +%name parseRules rules_and_deprecs + +%tokentype { Token } +%monad { P }{ thenP }{ returnP } +%lexer { lexer } { ITeof } %token + 'as' { ITas } 'case' { ITcase } -- Haskell keywords 'class' { ITclass } 'data' { ITdata } @@ -48,6 +86,7 @@ import GlaExts 'deriving' { ITderiving } 'do' { ITdo } 'else' { ITelse } + 'hiding' { IThiding } 'if' { ITif } 'import' { ITimport } 'in' { ITin } @@ -59,37 +98,55 @@ import GlaExts 'module' { ITmodule } 'newtype' { ITnewtype } 'of' { ITof } + 'qualified' { ITqualified } 'then' { ITthen } 'type' { ITtype } 'where' { ITwhere } - 'as' { ITas } - 'qualified' { ITqualified } - 'hiding' { IThiding } - '__interface' { ITinterface } -- GHC-extension keywords - '__export' { ITexport } - '__instimport' { ITinstimport } - '__forall' { ITforall } + 'forall' { ITforall } -- GHC extension keywords + 'foreign' { ITforeign } + 'export' { ITexport } + 'label' { ITlabel } + 'dynamic' { ITdynamic } + 'unsafe' { ITunsafe } + 'with' { ITwith } + 'stdcall' { ITstdcallconv } + 'ccall' { ITccallconv } + + '__interface' { ITinterface } -- interface keywords + '__export' { IT__export } + '__depends' { ITdepends } + '__forall' { IT__forall } '__letrec' { ITletrec } '__coerce' { ITcoerce } - '__inline' { ITinline } + '__inline_me' { ITinlineMe } + '__inline_call'{ ITinlineCall } '__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 } + '__label' { ITlabel_lit } '__litlit' { ITlit_lit } '__string' { ITstring_lit } '__ccall' { ITccall $$ } - '__scc' { ITscc $$ } - '__a' { ITtypeapp } + '__scc' { ITscc } + '__sccC' { ITsccAllCafs } + + '__u' { ITusage } '__A' { ITarity } '__P' { ITspecialise } '__C' { ITnocaf } - '__U' { ITunfold $$ } + '__U' { ITunfold } '__S' { ITstrict $$ } + '__R' { ITrules } + '__M' { ITcprinfo } + '__D' { ITdeprecated } '..' { ITdotdot } -- reserved symbols '::' { ITdcolon } @@ -99,15 +156,14 @@ import GlaExts '<-' { ITlarrow } '->' { ITrarrow } '@' { ITat } - '~' { ITtilde } '=>' { ITdarrow } '-' { ITminus } '!' { ITbang } - '/\\' { ITbiglam } -- GHC-extension symbols - '{' { ITocurly } -- special symbols '}' { ITccurly } + '{|' { ITocurlybar } -- special symbols + '|}' { ITccurlybar } -- special symbols '[' { ITobrack } ']' { ITcbrack } '(' { IToparen } @@ -116,6 +172,7 @@ import GlaExts '#)' { ITcubxparen } ';' { ITsemi } ',' { ITcomma } + '.' { ITdot } VARID { ITvarid $$ } -- identifiers CONID { ITconid $$ } @@ -126,105 +183,130 @@ import GlaExts QVARSYM { ITqvarsym $$ } QCONSYM { ITqconsym $$ } + IPVARID { ITipvarid $$ } -- GHC extension + PRAGMA { ITpragma $$ } CHAR { ITchar $$ } STRING { ITstring $$ } INTEGER { ITinteger $$ } RATIONAL { ITrational $$ } + CLITLIT { ITlitlit $$ } UNKNOWN { ITunknown $$ } %% --- 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 { PIface $1 } - | type { PType $1 } - | id_info { PIdInfo $1 } - - iface :: { ParsedIface } -iface : '__interface' mod_name INTEGER checkVersion 'where' - import_part - instance_import_part +iface : '__interface' package mod_name + version sub_versions + orphans checkVersion 'where' exports_part + import_part + fix_decl_part instance_decl_part decls_part - { ParsedIface - $2 -- Module name - (fromInteger $3) -- Module version - (reverse $6) -- Usages - (reverse $8) -- Exports - (reverse $7) -- Instance import modules - (reverse $10) -- Decls - (reverse $9) -- Local instances - } + rules_and_deprecs_part + { ParsedIface { + pi_mod = mkModule $3 $2, -- Module itself + pi_vers = $4, -- Module version + pi_orphan = $6, + pi_exports = (fst $5, $9), -- Exports + pi_usages = $10, -- Usages + pi_fixity = $11, -- Fixies + pi_insts = $12, -- Local instances + pi_decls = $13, -- Decls + pi_rules = (snd $5,fst $14), -- Rules + pi_deprecs = snd $14 -- Deprecations + } } + +-- Versions for exports and rules (optional) +sub_versions :: { (Version,Version) } + : '[' version version ']' { ($2,$3) } + | {- empty -} { (initialVersion, initialVersion) } -------------------------------------------------------------------------- import_part :: { [ImportVersion OccName] } import_part : { [] } - | import_part import_decl { $2 : $1 } + | import_decl import_part { $1 : $2 } import_decl :: { ImportVersion OccName } -import_decl : 'import' mod_name opt_bang INTEGER '::' whats_imported ';' - { ($2, $3, fromInteger $4, $6) } +import_decl : 'import' mod_name orphans is_boot whats_imported ';' + { ({-mkSysModuleNameFS-} $2, $3, $4, $5) } + +orphans :: { WhetherHasOrphans } +orphans : { False } + | '!' { True } + +is_boot :: { IsBootInterface } +is_boot : { False } + | '@' { True } whats_imported :: { WhatsImported OccName } -whats_imported : { Everything } - | name_version_pair name_version_pairs { Specifically ($1:$2) } +whats_imported : { NothingAtAll } + | '::' version { Everything $2 } + | '::' version version version name_version_pairs { Specifically $2 (Just $3) $5 $4 } + | '::' version version name_version_pairs { Specifically $2 Nothing $4 $3 } -name_version_pairs :: { [LocalVersion OccName] } +name_version_pairs :: { [(OccName, Version)] } name_version_pairs : { [] } | name_version_pair name_version_pairs { $1 : $2 } -name_version_pair :: { LocalVersion OccName } -name_version_pair : entity_occ INTEGER { ($1, fromInteger $2) } +name_version_pair :: { (OccName, Version) } +name_version_pair : var_occ version { ($1, $2) } + | tc_occ version { ($1, $2) } -instance_import_part :: { [Module] } -instance_import_part : { [] } - | instance_import_part '__instimport' mod_name ';' - { $3 : $1 } -------------------------------------------------------------------------- exports_part :: { [ExportItem] } exports_part : { [] } - | exports_part '__export' opt_bang mod_name entities ';' - { ($4,$3,$5) : $1 } - -opt_bang :: { IfaceFlavour } -opt_bang : { HiFile } - | '!' { HiBootFile } + | '__export' mod_name entities ';' + exports_part { ({-mkSysModuleNameFS-} $2, $3) : $5 } entities :: { [RdrAvailInfo] } -entities : { [] } - | entity entities { $1 : $2 } +entities : { [] } + | entity entities { $1 : $2 } entity :: { RdrAvailInfo } -entity : entity_occ { if isTCOcc $1 - then AvailTC $1 [$1] - else Avail $1 } - | entity_occ stuff_inside { AvailTC $1 ($1:$2) } - | entity_occ '|' stuff_inside { AvailTC $1 $3 } +entity : var_occ { Avail $1 } + | tc_occ { AvailTC $1 [$1] } + | tc_occ '|' stuff_inside { AvailTC $1 $3 } + | tc_occ stuff_inside { AvailTC $1 ($1:$2) } + -- Note that the "main name" comes at the beginning 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 } + + -------------------------------------------------------------------------- +fix_decl_part :: { [RdrNameFixitySig] } +fix_decl_part : {- empty -} { [] } + | fix_decls ';' { $1 } + +fix_decls :: { [RdrNameFixitySig] } +fix_decls : { [] } + | fix_decl fix_decls { $1 : $2 } + +fix_decl :: { RdrNameFixitySig } +fix_decl : src_loc fixity prec var_or_data_name { FixitySig $4 (Fixity $3 $2) $1 } + fixity :: { FixityDirection } fixity : 'infixl' { InfixL } | 'infixr' { InfixR } | 'infix' { InfixN } -mb_fix :: { Int } -mb_fix : {-nothing-} { 9 } - | INTEGER { (fromInteger $1) } +prec :: { Int } +prec : INTEGER { fromInteger $1 } ----------------------------------------------------------------------------- @@ -233,15 +315,13 @@ csigs : { [] } | 'where' '{' csigs1 '}' { $3 } csigs1 :: { [RdrNameSig] } -csigs1 : csig { [$1] } +csigs1 : { [] } | csig ';' csigs1 { $1 : $3 } csig :: { RdrNameSig } -csig : src_loc var_name '::' type { ClassOpSig $2 Nothing $4 $1 } - | src_loc var_name '=' '::' type - { ClassOpSig $2 - (Just (error "Un-filled-in default method")) - $5 $1 } +csig : src_loc qvar_name '::' type { ClassOpSig $2 NoDefMeth $4 $1 } + | src_loc qvar_name ';' '::' type { ClassOpSig $2 GenDefMeth $5 $1 } + | src_loc qvar_name '=' '::' type { mkClassOpSigDM $2 $5 $1 } -------------------------------------------------------------------------- @@ -250,7 +330,7 @@ instance_decl_part : {- empty -} { [] } | instance_decl_part inst_decl { $2 : $1 } inst_decl :: { RdrNameInstDecl } -inst_decl : src_loc 'instance' type '=' var_name ';' +inst_decl : src_loc 'instance' type '=' qvar_name ';' { InstDecl $3 EmptyMonoBinds {- No bindings -} [] {- No user pragmas -} @@ -260,45 +340,133 @@ inst_decl : src_loc 'instance' type '=' var_name ';' -------------------------------------------------------------------------- -decls_part :: { [(Version, RdrNameHsDecl)] } +decls_part :: { [(Version, RdrNameTyClDecl)] } 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 data_fs tv_bndrs constrs - { TyClD (TyData DataType $3 (ifaceUnqualTC $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 csigs - { TyClD (mkClassDecl $3 $4 $5 $6 EmptyMonoBinds - noClassPragmas $1) } - | src_loc fixity mb_fix val_occ - { FixD (FixitySig (Unqual $4) (Fixity $3 $2) $1) } + | opt_version decl ';' decls_part { ($1,$2):$4 } + +decl :: { RdrNameTyClDecl } +decl : src_loc qvar_name '::' type maybe_idinfo + { IfaceSig $2 $4 ($5 $2) $1 } + | src_loc 'type' qtc_name tv_bndrs '=' type + { TySynonym $3 $4 $6 $1 } + | src_loc 'foreign' 'type' qtc_name + { ForeignType $4 Nothing DNType $1 } + | src_loc 'data' opt_decl_context qtc_name tv_bndrs constrs + { mkTyData DataType $3 $4 $5 $6 (length $6) Nothing $1 } + | src_loc 'newtype' opt_decl_context qtc_name tv_bndrs newtype_constr + { mkTyData NewType $3 $4 $5 $6 1 Nothing $1 } + | src_loc 'class' opt_decl_context qtc_name tv_bndrs fds csigs + { mkClassDecl $3 $4 $5 $6 $7 Nothing $1 } maybe_idinfo :: { RdrName -> [HsIdInfo RdrName] } maybe_idinfo : {- empty -} { \_ -> [] } - | src_loc PRAGMA { \x -> - case parseIface $2 $1 of - Succeeded (PIdInfo id_info) -> id_info - Failed err -> pprPanic "IdInfo parse failed" - (vcat [ppr x, err]) + | pragma { \x -> if opt_IgnoreIfacePragmas then [] + else case $1 of + POk _ id_info -> id_info + PFailed err -> pprPanic "IdInfo parse failed" + (vcat [ppr x, err]) + } + {- + If a signature decl is being loaded, and opt_IgnoreIfacePragmas is on, + we toss away unfolding information. + + Also, if the signature is loaded from a module we're importing from source, + we do the same. This is to avoid situations when compiling a pair of mutually + recursive modules, peering at unfolding info in the interface file of the other, + e.g., you compile A, it looks at B's interface file and may as a result change + its interface file. Hence, B is recompiled, maybe changing its interface file, + which will the unfolding info used in A to become invalid. Simple way out is to + just ignore unfolding info. + + [Jan 99: I junked the second test above. If we're importing from an hi-boot + file there isn't going to *be* any pragma info. The above comment + dates from a time where we picked up a .hi file first if it existed.] + -} + +pragma :: { ParseResult [HsIdInfo RdrName] } +pragma : src_loc PRAGMA { parseIdInfo $2 PState{ bol = 0#, atbol = 1#, + context = [], + glasgow_exts = 1#, + loc = $1 } } ----------------------------------------------------------------------------- +rules_and_deprecs_part :: { ([RdrNameRuleDecl], IfaceDeprecs) } +rules_and_deprecs_part : {- empty -} { ([], Nothing) } + | rules_prag { case $1 of + POk _ rds -> rds + PFailed err -> pprPanic "Rules/Deprecations parse failed" err + } + +rules_prag :: { ParseResult ([RdrNameRuleDecl], IfaceDeprecs) } +rules_prag : src_loc PRAGMA { parseRules $2 PState{ bol = 0#, atbol = 1#, + context = [], + glasgow_exts = 1#, + loc = $1 } + } + +rules_and_deprecs :: { ([RdrNameRuleDecl], IfaceDeprecs) } +rules_and_deprecs : rule_prag deprec_prag { ($1, $2) } + + +----------------------------------------------------------------------------- + +rule_prag :: { [RdrNameRuleDecl] } +rule_prag : {- empty -} { [] } + | '__R' rules { $2 } + +rules :: { [RdrNameRuleDecl] } + : {- empty -} { [] } + | rule ';' rules { $1:$3 } + +rule :: { RdrNameRuleDecl } +rule : src_loc STRING activation rule_forall qvar_name + core_args '=' core_expr { IfaceRule $2 $3 $4 $5 $6 $8 $1 } + +activation :: { Activation } +activation : {- empty -} { AlwaysActive } + | '[' INTEGER ']' { ActiveAfter (fromInteger $2) } + +rule_forall :: { [UfBinder RdrName] } +rule_forall : '__forall' '{' core_bndrs '}' { $3 } + +----------------------------------------------------------------------------- + +deprec_prag :: { IfaceDeprecs } +deprec_prag : {- empty -} { Nothing } + | '__D' deprecs { Just $2 } + +deprecs :: { Either DeprecTxt [(RdrName,DeprecTxt)] } +deprecs : STRING { Left $1 } + | deprec_list { Right $1 } + +deprec_list :: { [(RdrName,DeprecTxt)] } +deprec_list : deprec { [$1] } + | deprec ';' deprec_list { $1 : $3 } + +deprec :: { (RdrName,DeprecTxt) } +deprec : deprec_name STRING { ($1, $2) } + +deprec_name :: { RdrName } + : qvar_name { $1 } + | qtc_name { $1 } + +----------------------------------------------------------------------------- + version :: { Version } -version : INTEGER { fromInteger $1 } +version : INTEGER { fromInteger $1 } -decl_context :: { RdrNameContext } -decl_context : { [] } - | '{' context_list1 '}' '=>' { $2 } +opt_version :: { Version } +opt_version : version { $1 } + | {- empty -} { initialVersion } + +opt_decl_context :: { RdrNameContext } +opt_decl_context : { [] } + | context '=>' { $1 } ----------------------------------------------------------------- +---------------------------------------------------------------------------- constrs :: { [RdrNameConDecl] {- empty for handwritten abstract -} } : { [] } @@ -309,56 +477,65 @@ constrs1 : constr { [$1] } | constr '|' constrs1 { $1 : $3 } constr :: { RdrNameConDecl } -constr : src_loc ex_stuff data_fs batypes { mkConDecl (ifaceUnqualVar $3) $2 (VanillaCon $4) $1 } - | src_loc ex_stuff data_fs '{' fields1 '}' { mkConDecl (ifaceUnqualVar $3) $2 (RecCon $5) $1 } +constr : src_loc ex_stuff qdata_name batypes { mk_con_decl $3 $2 (VanillaCon $4) $1 } + | src_loc ex_stuff qdata_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 { [mkConDecl $4 $3 (NewCon $5 Nothing) $1] } - | src_loc '=' ex_stuff data_name '{' var_name '::' atype '}' - { [mkConDecl $4 $3 (NewCon $8 (Just $6)) $1] } +newtype_constr :: { [RdrNameConDecl] {- Not allowed to be empty -} } +newtype_constr : src_loc '=' ex_stuff qdata_name atype { [mk_con_decl $4 $3 (VanillaCon [unbangedType $5]) $1] } + | src_loc '=' ex_stuff qdata_name '{' qvar_name '::' atype '}' + { [mk_con_decl $4 $3 (RecCon [([$6], unbangedType $8)]) $1] } -ex_stuff :: { ([HsTyVar RdrName], RdrNameContext) } +ex_stuff :: { ([HsTyVarBndr RdrName], RdrNameContext) } ex_stuff : { ([],[]) } - | '__forall' forall context '=>' { ($2,$3) } + | '__forall' tv_bndrs opt_context '=>' { ($2,$3) } batypes :: { [RdrNameBangType] } batypes : { [] } | batype batypes { $1 : $2 } batype :: { RdrNameBangType } -batype : atype { Unbanged $1 } - | '!' atype { Banged $2 } +batype : tatype { unbangedType $1 } + | '!' tatype { BangType MarkedStrict $2 } + | '!' '!' tatype { BangType MarkedUnboxed $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) } +field : qvar_names1 '::' ttype { ($1, unbangedType $3) } + | qvar_names1 '::' '!' ttype { ($1, BangType MarkedStrict $4) } + | qvar_names1 '::' '!' '!' ttype { ($1, BangType MarkedUnboxed $5) } + -------------------------------------------------------------------------- type :: { RdrNameHsType } -type : '__forall' forall context '=>' type - { mkHsForAllTy $2 $3 $5 } - | btype '->' type { MonoFunTy $1 $3 } +type : '__forall' tv_bndrs + opt_context '=>' type { mkHsForAllTy (Just $2) $3 $5 } + | btype '->' type { HsFunTy $1 $3 } | btype { $1 } -forall :: { [HsTyVar RdrName] } -forall : '[' tv_bndrs ']' { $2 } +opt_context :: { RdrNameContext } +opt_context : { [] } + | context { $1 } context :: { RdrNameContext } -context : { [] } - | '{' context_list1 '}' { $2 } +context : '(' context_list1 ')' { $2 } + | '{' context_list1 '}' { $2 } -- Backward compatibility context_list1 :: { RdrNameContext } context_list1 : class { [$1] } | class ',' context_list1 { $1 : $3 } -class :: { (RdrName, [RdrNameHsType]) } -class : qtc_name atypes { ($1, $2) } +class :: { HsPred RdrName } +class : qcls_name atypes { (HsClassP $1 $2) } + | ipvar_name '::' type { (HsIParam $1 $3) } + +types0 :: { [RdrNameHsType] {- Zero or more -} } +types0 : {- empty -} { [ ] } + | type { [ $1 ] } + | types2 { $1 } types2 :: { [RdrNameHsType] {- Two or more -} } types2 : type ',' type { [$1,$3] } @@ -366,64 +543,96 @@ types2 : type ',' type { [$1,$3] } btype :: { RdrNameHsType } btype : atype { $1 } - | btype atype { MonoTyApp $1 $2 } + | btype atype { HsAppTy $1 $2 } + | '__u' atype atype { HsUsageTy $2 $3 } atype :: { RdrNameHsType } -atype : qtc_name { MonoTyVar $1 } - | tv_name { MonoTyVar $1 } - | '(' ')' { MonoTupleTy [] True } - | '(' types2 ')' { MonoTupleTy $2 True{-boxed-} } - | '(#' type '#)' { MonoTupleTy [$2] False{-unboxed-} } - | '(#' types2 '#)' { MonoTupleTy $2 False{-unboxed-} } - | '[' type ']' { MonoListTy $2 } - | '{' qtc_name atypes '}' { MonoDictTy $2 $3 } +atype : qtc_name { HsTyVar $1 } + | tv_name { HsTyVar $1 } + | '.' { hsUsOnce } + | '!' { hsUsMany } + | '(' ')' { HsTupleTy (mkHsTupCon tcName Boxed []) [] } + | '(' types2 ')' { HsTupleTy (mkHsTupCon tcName Boxed $2) $2 } + | '(#' types0 '#)' { HsTupleTy (mkHsTupCon tcName Unboxed $2) $2 } + | '[' type ']' { HsListTy $2 } + | '{' qcls_name atypes '}' { mkHsDictTy $2 $3 } + | '{' ipvar_name '::' type '}' { mkHsIParamTy $2 $4 } | '(' type ')' { $2 } atypes :: { [RdrNameHsType] {- Zero or more -} } atypes : { [] } | atype atypes { $1 : $2 } ---------------------------------------------------------------------- +-------------------------------------------------------------------------- -mod_name :: { Module } - : CONID { mkModuleFS $1 } +-- versions of type/btype/atype that cant begin with '!' (or '.') +-- for use where the kind is definitely known NOT to be '$' + +ttype :: { RdrNameHsType } +ttype : '__forall' tv_bndrs + opt_context '=>' type { mkHsForAllTy (Just $2) $3 $5 } + | tbtype '->' type { HsFunTy $1 $3 } + | tbtype { $1 } + +tbtype :: { RdrNameHsType } +tbtype : tatype { $1 } + | tbtype atype { HsAppTy $1 $2 } + | '__u' atype atype { HsUsageTy $2 $3 } + +tatype :: { RdrNameHsType } +tatype : qtc_name { HsTyVar $1 } + | tv_name { HsTyVar $1 } + | '(' ')' { HsTupleTy (mkHsTupCon tcName Boxed []) [] } + | '(' types2 ')' { HsTupleTy (mkHsTupCon tcName Boxed $2) $2 } + | '(#' types0 '#)' { HsTupleTy (mkHsTupCon tcName Unboxed $2) $2 } + | '[' type ']' { HsListTy $2 } + | '{' qcls_name atypes '}' { mkHsDictTy $2 $3 } + | '{' ipvar_name '::' type '}' { mkHsIParamTy $2 $4 } + | '(' type ')' { $2 } +--------------------------------------------------------------------- -var_fs :: { FAST_STRING } - : VARID { $1 } - | VARSYM { $1 } - | '-' { SLIT("-") } - | '!' { SLIT("!") } - -data_fs :: { FAST_STRING } - : CONID { $1 } - | CONSYM { $1 } - | '->' { SLIT("->") } - | '(' ')' { SLIT("()") } - | '(' commas ')' { snd (mkTupNameStr $2) } - | '[' ']' { SLIT("[]") } - -commas :: { Int } - : ',' { 2 } - | commas ',' { $1 + 1 } +package :: { PackageName } + : STRING { $1 } + | {- empty -} { opt_InPackage } + -- Useful for .hi-boot files, + -- which can omit the package Id + -- Module loops are always within a package -val_occ :: { OccName } - : var_fs { varOcc $1 } - | data_fs { varOcc $1 } +mod_name :: { ModuleName } + : CONID { mkSysModuleNameFS $1 } -val_occs :: { [OccName] } - : val_occ { [$1] } - | val_occ val_occs { $1 : $2 } -entity_occ :: { OccName } - : var_fs { varOcc $1 } - | data_fs { tcOcc $1 } +--------------------------------------------------- +var_fs :: { EncodedFS } + : VARID { $1 } + | '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") } + | 'ccall' { SLIT("ccall") } + | 'stdcall' { SLIT("stdcall") } + +var_occ :: { OccName } + : var_fs { mkSysOccFS varName $1 } var_name :: { RdrName } -var_name : var_fs { ifaceUnqualVar $1 } +var_name : var_occ { mkRdrUnqual $1 } qvar_name :: { RdrName } qvar_name : var_name { $1 } - | QVARID { ifaceQualVar $1 } - | QVARSYM { ifaceQualVar $1 } + | QVARID { mkIfaceOrig varName $1 } + +ipvar_name :: { RdrName } + : IPVARID { mkRdrUnqual (mkSysOccFS varName (tailFS $1)) } + +qvar_names1 :: { [RdrName] } +qvar_names1 : qvar_name { [$1] } + | qvar_name qvar_names1 { $1 : $2 } var_names :: { [RdrName] } var_names : { [] } @@ -432,86 +641,96 @@ var_names : { [] } var_names1 :: { [RdrName] } var_names1 : var_name var_names { $1 : $2 } -data_name :: { RdrName } - : CONID { ifaceUnqualVar $1 } - | CONSYM { ifaceUnqualVar $1 } - | '(' commas ')' { ifaceUnqualVar (snd (mkTupNameStr $2)) } - | '[' ']' { ifaceUnqualVar SLIT("[]") } +--------------------------------------------------- + +data_occ :: { OccName } + : CONID { mkSysOccFS dataName $1 } qdata_name :: { RdrName } -qdata_name : data_name { $1 } - | QCONID { ifaceQualVar $1 } - | QCONSYM { ifaceQualVar $1 } + : data_occ { mkRdrUnqual $1 } + | QCONID { mkIfaceOrig dataName $1 } -qdata_names :: { [RdrName] } -qdata_names : { [] } - | qdata_name qdata_names { $1 : $2 } +var_or_data_name :: { RdrName } + : qvar_name { $1 } + | qdata_name { $1 } -tc_name :: { RdrName } -tc_name : CONID { ifaceUnqualTC $1 } - | CONSYM { ifaceUnqualTC $1 } - | '(' '->' ')' { ifaceUnqualTC SLIT("->") } - | '(' commas ')' { ifaceUnqualTC (snd (mkTupNameStr $2)) } - | '[' ']' { ifaceUnqualTC SLIT("[]") } +--------------------------------------------------- +tc_occ :: { OccName } + : CONID { mkSysOccFS tcName $1 } qtc_name :: { RdrName } -qtc_name : tc_name { $1 } - | QCONID { ifaceQualTC $1 } - | QCONSYM { ifaceQualTC $1 } + : tc_occ { mkRdrUnqual $1 } + | QCONID { mkIfaceOrig tcName $1 } + +--------------------------------------------------- +qcls_name :: { RdrName } + : CONID { mkRdrUnqual (mkSysOccFS clsName $1) } + | QCONID { mkIfaceOrig clsName $1 } +--------------------------------------------------- tv_name :: { RdrName } -tv_name : VARID { ifaceUnqualTv $1 } - | VARSYM { ifaceUnqualTv $1 {- Allow t2 as a tyvar -} } + : var_fs { mkRdrUnqual (mkSysOccFS tvName $1) } + +tv_bndr :: { HsTyVarBndr RdrName } + : tv_name '::' akind { IfaceTyVar $1 $3 } + | tv_name { IfaceTyVar $1 liftedTypeKind } -tv_bndr :: { HsTyVar RdrName } -tv_bndr : tv_name '::' akind { IfaceTyVar $1 $3 } - | tv_name { IfaceTyVar $1 boxedTypeKind } +tv_bndrs :: { [HsTyVarBndr RdrName] } + : tv_bndrs1 { $1 } + | '[' tv_bndrs1 ']' { $2 } -- Backward compatibility -tv_bndrs :: { [HsTyVar RdrName] } +tv_bndrs1 :: { [HsTyVarBndr RdrName] } : { [] } - | tv_bndr tv_bndrs { $1 : $2 } + | tv_bndr tv_bndrs1 { $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 + liftedTypeKind else if $1 == SLIT("?") then openTypeKind - else panic "ParseInterface: akind" + else if $1 == SLIT("\36") then + usageTypeKind -- dollar + else panic "ParseInterface: akind" } | '(' kind ')' { $2 } -------------------------------------------------------------------------- id_info :: { [HsIdInfo RdrName] } -id_info : { [] } + : id_info_item { [$1] } | id_info_item id_info { $1 : $2 } id_info_item :: { HsIdInfo RdrName } -id_info_item : '__A' arity_info { HsArity $2 } - | strict_info { HsStrictness $1 } - | '__U' core_expr { HsUnfold $1 (Just $2) } - | '__U' { HsUnfold $1 Nothing } - | '__P' spec_tvs - atypes '=' core_expr { HsSpecialise $2 $3 $5 } + : '__A' INTEGER { HsArity (fromInteger $2) } + | '__U' inline_prag core_expr { HsUnfold $2 $3 } + | '__S' { HsStrictness $1 } | '__C' { HsNoCafRefs } + | '__P' qvar_name INTEGER { HsWorker $2 (fromInteger $3) } - -spec_tvs :: { [HsTyVar RdrName] } -spec_tvs : '[' tv_bndrs ']' { $2 } - - -arity_info :: { ArityInfo } -arity_info : INTEGER { exactArity (fromInteger $1) } - -strict_info :: { HsStrictnessInfo RdrName } -strict_info : '__S' qvar_name '{' qdata_names '}' - { HsStrictnessInfo $1 (Just ($2,$4)) } - | '__S' qvar_name { HsStrictnessInfo $1 (Just ($2,[])) } - | '__S' { HsStrictnessInfo $1 Nothing } +inline_prag :: { InlinePragInfo } + : {- empty -} { AlwaysActive } + | '[' INTEGER ']' { ActiveAfter (fromInteger $2) } ------------------------------------------------------- core_expr :: { UfExpr RdrName } @@ -524,20 +743,20 @@ core_expr : '\\' core_bndrs '->' core_expr { foldr UfLam $4 $2 } | '__letrec' '{' rec_binds '}' 'in' core_expr { UfLet (UfRec $3) $6 } - | con_or_primop '{' core_args '}' { UfCon $1 $3 } - | '__litlit' STRING atype { UfCon (UfLitLitCon $2 $3) [] } + | '__litlit' STRING atype { UfLitLit $2 $3 } - | '__inline' core_expr { UfNote UfInlineCall $2 } - | '__coerce' atype core_expr { UfNote (UfCoerce $2) $3 } - | '__scc' core_expr { UfNote (UfSCC $1) $2 } - | fexpr { $1 } + | fexpr { $1 } fexpr :: { UfExpr RdrName } fexpr : fexpr core_arg { UfApp $1 $2 } + | scc core_aexpr { UfNote (UfSCC $1) $2 } + | '__inline_me' core_aexpr { UfNote UfInlineMe $2 } + | '__inline_call' core_aexpr { UfNote UfInlineCall $2 } + | '__coerce' atype core_aexpr { UfNote (UfCoerce $2) $3 } | core_aexpr { $1 } core_arg :: { UfExpr RdrName } - : '__a' atype { UfType $2 } + : '@' atype { UfType $2 } | core_aexpr { $1 } core_args :: { [UfExpr RdrName] } @@ -546,84 +765,94 @@ core_args :: { [UfExpr RdrName] } 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 {}). - - | core_lit { UfCon (UfLitCon $1) [] } + + | core_lit { UfLit $1 } | '(' core_expr ')' { $2 } - | '(' ')' { UfTuple (mkTupConRdrName 0) [] } - | '(' comma_exprs2 ')' { UfTuple (mkTupConRdrName (length $2)) $2 } - | '(#' core_expr '#)' { UfTuple (mkUbxTupConRdrName 1) [$2] } - | '(#' comma_exprs2 '#)' { UfTuple (mkUbxTupConRdrName (length $2)) $2 } + + | '(' ')' { UfTuple (mkHsTupCon dataName Boxed []) [] } + | '(' comma_exprs2 ')' { UfTuple (mkHsTupCon dataName Boxed $2) $2 } + | '(#' comma_exprs0 '#)' { UfTuple (mkHsTupCon dataName Unboxed $2) $2 } + + | '{' '__ccall' ccall_string type '}' + { let + (is_dyn, is_casm, may_gc) = $2 + + target | is_dyn = DynamicTarget + | is_casm = CasmTarget $3 + | otherwise = StaticTarget $3 + + ccall = CCallSpec target CCallConv may_gc + in + UfFCall (CCall 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 } -con_or_primop :: { UfCon RdrName } -con_or_primop : qdata_name { UfDataCon $1 } - | qvar_name { UfPrimOp $1 } - | '__ccall' ccall_string { let - (is_casm, may_gc) = $1 - in - UfCCallOp $2 is_casm may_gc - } - 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 :: { (UfCon RdrName, [RdrName]) } -core_pat : core_lit { (UfLitCon $1, []) } - | '__litlit' STRING atype { (UfLitLitCon $2 $3, []) } - | qdata_name var_names { (UfDataCon $1, $2) } - | '(' comma_var_names ')' { (UfDataCon (mkTupConRdrName (length $2)), $2) } - | '(#' comma_var_names1 '#)' { (UfDataCon (mkUbxTupConRdrName (length $2)), $2) } +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) } + | '(' ')' { (UfTupleAlt (mkHsTupCon dataName Boxed []), []) } + | '(' comma_var_names1 ')' { (UfTupleAlt (mkHsTupCon dataName Boxed $2), $2) } + | '(#' comma_var_names1 '#)' { (UfTupleAlt (mkHsTupCon dataName Unboxed $2), $2) } | '__DEFAULT' { (UfDefault, []) } | '(' core_pat ')' { $2 } - -comma_var_names :: { [RdrName] } -- Zero, or two or more -comma_var_names : { [] } - | var_name ',' comma_var_names1 { $1 : $3 } - +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_safe $1 } +core_lit : integer { mkMachInt $1 } | CHAR { MachChar $1 } | STRING { MachStr $1 } - | '__string' STRING { NoRepStr $2 (panic "NoRepStr type") } - | RATIONAL { MachDouble $1 } - | '__float' RATIONAL { MachFloat $2 } - - | '__integer' INTEGER { NoRepInteger $2 (panic "NoRepInteger type") - -- The type checker will add the types - } - - | '__rational' INTEGER INTEGER { NoRepRational ($2 % $3) - (panic "NoRepRational type") - -- The type checker will add the type - } - - | '__addr' INTEGER { MachAddr $2 } + | rational { MachDouble $1 } + | '__word' integer { mkMachWord $2 } + | '__word64' integer { mkMachWord64 $2 } + | '__int64' integer { mkMachInt64 $2 } + | '__float' rational { MachFloat $2 } + | '__addr' integer { MachAddr $2 } + | '__label' STRING { MachLabel $2 } + +integer :: { Integer } + : INTEGER { $1 } + | '-' INTEGER { (-$2) } + +rational :: { Rational } + : RATIONAL { $1 } + | '-' RATIONAL { (-$2) } core_bndr :: { UfBinder RdrName } core_bndr : core_val_bndr { $1 } @@ -637,19 +866,42 @@ core_val_bndr :: { UfBinder RdrName } core_val_bndr : var_name '::' atype { UfValBinder $1 $3 } core_tv_bndr :: { UfBinder RdrName } -core_tv_bndr : '__a' tv_name '::' akind { UfTyBinder $2 $4 } - | '__a' tv_name { UfTyBinder $2 boxedTypeKind } +core_tv_bndr : '@' tv_name '::' akind { UfTyBinder $2 $4 } + | '@' tv_name { UfTyBinder $2 liftedTypeKind } 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 : {% getSrcLocIf } +src_loc : {% getSrcLocP } +-- Check the project version: this makes sure +-- that the project version (e.g. 407) in the interface +-- file is the same as that for the compiler that's reading it checkVersion :: { () } : {-empty-} {% checkVersion Nothing } | INTEGER {% checkVersion (Just (fromInteger $1)) } @@ -658,10 +910,8 @@ checkVersion :: { () } -- Haskell code { +happyError :: P a +happyError buf PState{ loc = loc } = PFailed (ifaceParseErr buf loc) -data IfaceStuff = PIface ParsedIface - | PIdInfo [HsIdInfo RdrName] - | PType RdrNameHsType - -mkConDecl name (ex_tvs, ex_ctxt) details loc = ConDecl name ex_tvs ex_ctxt details loc +mk_con_decl name (ex_tvs, ex_ctxt) details loc = mkConDecl name ex_tvs ex_ctxt details loc }