X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Frename%2FParseIface.y;h=976d3b008ea67e243f07699647f41ecf98e243fb;hb=3cb42c36d549fa3e1861240f996c5813e41c6a70;hp=ce0739f3c7000e32b025c94b0cbe4599947ae63e;hpb=da423ca2f62cc42f925cce0c489dd348d94c7d2e;p=ghc-hetmet.git diff --git a/ghc/compiler/rename/ParseIface.y b/ghc/compiler/rename/ParseIface.y index ce0739f..976d3b0 100644 --- a/ghc/compiler/rename/ParseIface.y +++ b/ghc/compiler/rename/ParseIface.y @@ -1,451 +1,917 @@ -{ -#include "HsVersions.h" -module ParseIface ( parseIface ) where +{- 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. -IMP_Ubiq(){-uitous-} +-} -import CmdLineOpts ( opt_IgnoreIfacePragmas ) + +{ +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(..) ) -import HsTypes ( mkHsForAllTy ) +import HsTypes ( mkHsForAllTy, mkHsTupCon ) import HsCore -import Literal -import BasicTypes ( Fixity(..), FixityDirection(..), NewOrData(..), Version(..) ) -import HsPragmas ( noGenPragmas, noDataPragmas, noClassPragmas, noClassOpPragmas, noInstancePragmas ) -import IdInfo ( exactArity, mkStrictnessInfo, mkBottomStrictnessInfo, - ArgUsageInfo, FBTypeInfo, ArityInfo, StrictnessInfo +import Literal ( Literal(..), mkMachInt, mkMachInt64, mkMachWord, mkMachWord64 ) +import BasicTypes ( Fixity(..), FixityDirection(..), StrictnessMark(..), + NewOrData(..), Version, initialVersion, Boxity(..), + Activation(..) ) -import Kind ( Kind, mkArrowKind, mkTypeKind ) +import CostCentre ( CostCentre(..), IsCafCC(..), IsDupdCC(..) ) +import Type ( Kind, mkArrowKind, liftedTypeKind, openTypeKind, usageTypeKind ) +import IdInfo ( InlinePragInfo(..) ) +import ForeignCall ( ForeignCall(..), CCallConv(..), CCallSpec(..), CCallTarget(..) ) import Lex -import RnMonad ( SYN_IE(ImportVersion), SYN_IE(LocalVersion), ParsedIface(..), - SYN_IE(RdrNamePragma), SYN_IE(ExportItem) - ) -import Bag ( emptyBag, unitBag, snocBag ) -import FiniteMap ( emptyFM, unitFM, addToFM, plusFM, bagToFM, FiniteMap ) -import Name ( OccName(..), isTCOcc, Provenance, SYN_IE(Module) ) -import SrcLoc ( mkIfaceSrcLoc ) -import Util ( panic{-, pprPanic ToDo:rm-} ) -import ParseType ( parseType ) -import ParseUnfolding ( parseUnfolding ) -import Maybes - ------------------------------------------------------------------ +import RnMonad ( ParsedIface(..), ExportItem, IfaceDeprecs ) +import HscTypes ( WhetherHasOrphans, IsBootInterface, GenAvailInfo(..), + ImportVersion, WhatsImported(..), + RdrAvailInfo ) -parseIface ls = parseIToks (lexIface ls) - ------------------------------------------------------------------ +import RdrName ( RdrName, mkRdrUnqual, mkIfaceOrig ) +import Name ( OccName ) +import OccName ( mkSysOccFS, + tcName, varName, dataName, clsName, tvName, + EncodedFS + ) +import Module ( ModuleName, PackageName, mkSysModuleNameFS, mkModule ) +import SrcLoc ( SrcLoc ) +import CmdLineOpts ( opt_InPackage, opt_IgnoreIfacePragmas ) +import Outputable +import Class ( DefMeth (..) ) + +import GlaExts +import FastString ( tailFS ) } -%name parseIToks -%tokentype { IfaceToken } -%monad { IfM }{ thenIf }{ returnIf } +%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 - INTERFACE { ITinterface } - USAGES_PART { ITusages } - VERSIONS_PART { ITversions } - EXPORTS_PART { ITexports } - INSTANCE_MODULES_PART { ITinstance_modules } - INSTANCES_PART { ITinstances } - FIXITIES_PART { ITfixities } - DECLARATIONS_PART { ITdeclarations } - PRAGMAS_PART { ITpragmas } - DATA { ITdata } - TYPE { ITtype } - NEWTYPE { ITnewtype } - DERIVING { ITderiving } - CLASS { ITclass } - WHERE { ITwhere } - INSTANCE { ITinstance } - INFIXL { ITinfixl } - INFIXR { ITinfixr } - INFIX { ITinfix } - FORALL { ITforall } - BANG { ITbang } - VBAR { ITvbar } - DCOLON { ITdcolon } - COMMA { ITcomma } - DARROW { ITdarrow } - DOTDOT { ITdotdot } - EQUAL { ITequal } - OCURLY { ITocurly } - OBRACK { ITobrack } - OPAREN { IToparen } - RARROW { ITrarrow } - CCURLY { ITccurly } - CBRACK { ITcbrack } - CPAREN { ITcparen } - SEMI { ITsemi } - - VARID { ITvarid $$ } - CONID { ITconid $$ } - VARSYM { ITvarsym $$ } - CONSYM { ITconsym $$ } - QVARID { ITqvarid $$ } - QCONID { ITqconid $$ } - QVARSYM { ITqvarsym $$ } - QCONSYM { ITqconsym $$ } - - IDINFO_PART { ITidinfo $$ } - TYPE_PART { ITtysig $$ } - ARITY_PART { ITarity } - STRICT_PART { ITstrict } - UNFOLD_PART { ITunfold $$ } - DEMAND { ITdemand $$ } - BOTTOM { ITbottom } - LAM { ITlam } - BIGLAM { ITbiglam } - CASE { ITcase } - PRIM_CASE { ITprim_case } - LET { ITlet } - LETREC { ITletrec } - IN { ITin } - OF { ITof } - COERCE_IN { ITcoerce_in } - COERCE_OUT { ITcoerce_out } - ATSIGN { ITatsign } - CCALL { ITccall $$ } - SCC { ITscc $$ } - - CHAR { ITchar $$ } - STRING { ITstring $$ } - INTEGER { ITinteger $$ } - DOUBLE { ITdouble $$ } - - INTEGER_LIT { ITinteger_lit } - FLOAT_LIT { ITfloat_lit } - RATIONAL_LIT { ITrational_lit } - ADDR_LIT { ITaddr_lit } - LIT_LIT { ITlit_lit } - STRING_LIT { ITstring_lit } - - UNKNOWN { ITunknown $$ } + 'as' { ITas } + 'case' { ITcase } -- Haskell keywords + 'class' { ITclass } + 'data' { ITdata } + 'default' { ITdefault } + 'deriving' { ITderiving } + 'do' { ITdo } + 'else' { ITelse } + 'hiding' { IThiding } + 'if' { ITif } + 'import' { ITimport } + 'in' { ITin } + 'infix' { ITinfix } + 'infixl' { ITinfixl } + 'infixr' { ITinfixr } + 'instance' { ITinstance } + 'let' { ITlet } + 'module' { ITmodule } + 'newtype' { ITnewtype } + 'of' { ITof } + 'qualified' { ITqualified } + 'then' { ITthen } + 'type' { ITtype } + 'where' { ITwhere } + + 'forall' { ITforall } -- GHC extension keywords + 'foreign' { ITforeign } + 'export' { ITexport } + 'label' { ITlabel } + 'dynamic' { ITdynamic } + 'unsafe' { ITunsafe } + 'with' { ITwith } + 'stdcall' { ITstdcallconv } + 'ccall' { ITccallconv } + + '__interface' { ITinterface } -- interface keywords + '__export' { IT__export } + '__depends' { ITdepends } + '__forall' { IT__forall } + '__letrec' { ITletrec } + '__coerce' { ITcoerce } + '__inline_me' { ITinlineMe } + '__inline_call'{ ITinlineCall } + '__DEFAULT' { ITdefaultbranch } + '__bot' { ITbottom } + '__integer' { ITinteger_lit } + '__float' { ITfloat_lit } + '__word' { ITword_lit } + '__int64' { ITint64_lit } + '__word64' { ITword64_lit } + '__rational' { ITrational_lit } + '__addr' { ITaddr_lit } + '__label' { ITlabel_lit } + '__litlit' { ITlit_lit } + '__string' { ITstring_lit } + '__ccall' { ITccall $$ } + '__scc' { ITscc } + '__sccC' { ITsccAllCafs } + + '__u' { ITusage } + + '__A' { ITarity } + '__P' { ITspecialise } + '__C' { ITnocaf } + '__U' { ITunfold } + '__S' { ITstrict $$ } + '__R' { ITrules } + '__M' { ITcprinfo } + '__D' { ITdeprecated } + + '..' { ITdotdot } -- reserved symbols + '::' { ITdcolon } + '=' { ITequal } + '\\' { ITlam } + '|' { ITvbar } + '<-' { ITlarrow } + '->' { ITrarrow } + '@' { ITat } + '=>' { ITdarrow } + '-' { ITminus } + '!' { ITbang } + + '{' { ITocurly } -- special symbols + '}' { ITccurly } + '{|' { ITocurlybar } -- special symbols + '|}' { ITccurlybar } -- special symbols + '[' { ITobrack } + ']' { ITcbrack } + '(' { IToparen } + ')' { ITcparen } + '(#' { IToubxparen } + '#)' { ITcubxparen } + ';' { ITsemi } + ',' { ITcomma } + '.' { ITdot } + + VARID { ITvarid $$ } -- 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 CONID INTEGER - inst_modules_part - usages_part - exports_part fixities_part - instances_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 - $5 -- Usages - $6 -- Exports - $4 -- Instance modules - $7 -- Fixities - $9 -- Decls - $8 -- Local instances - } - - -usages_part :: { [ImportVersion OccName] } -usages_part : USAGES_PART module_stuff_pairs { $2 } - | { [] } - -module_stuff_pairs :: { [ImportVersion OccName] } -module_stuff_pairs : { [] } - | module_stuff_pair module_stuff_pairs { $1 : $2 } - -module_stuff_pair :: { ImportVersion OccName } -module_stuff_pair : mod_name INTEGER DCOLON name_version_pairs SEMI - { ($1, fromInteger $2, $4) } - -versions_part :: { [LocalVersion OccName] } -versions_part : VERSIONS_PART name_version_pairs { $2 } - | { [] } - -name_version_pairs :: { [LocalVersion OccName] } + 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_decl import_part { $1 : $2 } + +import_decl :: { ImportVersion OccName } +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 : { 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 :: { [(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) } + + -------------------------------------------------------------------------- - } exports_part :: { [ExportItem] } -exports_part : EXPORTS_PART export_items { $2 } - | { [] } - -export_items :: { [ExportItem] } -export_items : { [] } - | mod_name entities SEMI export_items { ($1,$2) : $4 } +exports_part : { [] } + | '__export' mod_name entities ';' + exports_part { ({-mkSysModuleNameFS-} $2, $3) : $5 } -entities :: { [(OccName, [OccName])] } -entities : { [] } - | entity entities { $1 : $2 } +entities :: { [RdrAvailInfo] } +entities : { [] } + | entity entities { $1 : $2 } -entity :: { (OccName, [OccName]) } -entity : entity_occ { ($1, if isTCOcc $1 - then [$1] {- AvailTC -} - else []) {- Avail -} } - | entity_occ stuff_inside { ($1, ($1 : $2)) {- TyCls exported too -} } - | entity_occ BANG stuff_inside { ($1, $3) {- TyCls not exported -} } +entity :: { RdrAvailInfo } +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 : OPAREN val_occs1 CPAREN { $2 --------------------------------------------------------------------------- - } - -inst_modules_part :: { [Module] } -inst_modules_part : { [] } - | INSTANCE_MODULES_PART mod_list { $2 } +stuff_inside : '{' val_occs '}' { $2 } -mod_list :: { [Module] } -mod_list : { [] } - | mod_name mod_list { $1 : $2 --------------------------------------------------------------------------- - } +val_occ :: { OccName } + : var_occ { $1 } + | data_occ { $1 } -fixities_part :: { [(OccName,Fixity)] } -fixities_part : { [] } - | FIXITIES_PART fixes { $2 } +val_occs :: { [OccName] } + : val_occ { [$1] } + | val_occ val_occs { $1 : $2 } -fixes :: { [(OccName,Fixity)] } -fixes : { [] } - | fix fixes { $1 : $2 } -fix :: { (OccName, Fixity) } -fix : INFIXL INTEGER val_occ SEMI { ($3, Fixity (fromInteger $2) InfixL) } - | INFIXR INTEGER val_occ SEMI { ($3, Fixity (fromInteger $2) InfixR) } - | INFIX INTEGER val_occ SEMI { ($3, Fixity (fromInteger $2) InfixN) -------------------------------------------------------------------------- - } -decls_part :: { [(Version, RdrNameHsDecl)] } -decls_part : { [] } - | DECLARATIONS_PART topdecls { $2 } +fix_decl_part :: { [RdrNameFixitySig] } +fix_decl_part : {- empty -} { [] } + | fix_decls ';' { $1 } -topdecls :: { [(Version, RdrNameHsDecl)] } -topdecls : { [] } - | version topdecl topdecls { ($1,$2) : $3 } +fix_decls :: { [RdrNameFixitySig] } +fix_decls : { [] } + | fix_decl fix_decls { $1 : $2 } -version :: { Version } -version : INTEGER { fromInteger $1 } - -topdecl :: { RdrNameHsDecl } -topdecl : TYPE tc_name tv_bndrs EQUAL type SEMI - { TyD (TySynonym $2 $3 $5 mkIfaceSrcLoc) } - | DATA decl_context tc_name tv_bndrs constrs deriving SEMI - { TyD (TyData DataType $2 $3 $4 $5 $6 noDataPragmas mkIfaceSrcLoc) } - | NEWTYPE decl_context tc_name tv_bndrs newtype_constr deriving SEMI - { TyD (TyData NewType $2 $3 $4 $5 $6 noDataPragmas mkIfaceSrcLoc) } - | CLASS decl_context tc_name tv_bndr csigs SEMI - { ClD (ClassDecl $2 $3 $4 $5 EmptyMonoBinds noClassPragmas mkIfaceSrcLoc) } - | var_name TYPE_PART id_info - { - let - (Succeeded tp) = parseType $2 - in - SigD (IfaceSig $1 tp $3 mkIfaceSrcLoc) } - -id_info :: { [HsIdInfo RdrName] } -id_info : { [] } - | IDINFO_PART { let { (Succeeded id_info) = parseUnfolding $1 } in id_info} - -decl_context :: { RdrNameContext } -decl_context : { [] } - | OCURLY context_list1 CCURLY DARROW { $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 } + +prec :: { Int } +prec : INTEGER { fromInteger $1 } +----------------------------------------------------------------------------- csigs :: { [RdrNameSig] } csigs : { [] } - | WHERE OCURLY csigs1 CCURLY { $3 } + | 'where' '{' csigs1 '}' { $3 } csigs1 :: { [RdrNameSig] } -csigs1 : csig { [$1] } - | csig SEMI csigs1 { $1 : $3 } +csigs1 : { [] } + | csig ';' csigs1 { $1 : $3 } csig :: { RdrNameSig } -csig : var_name DCOLON type { ClassOpSig $1 $1 $3 mkIfaceSrcLoc ----------------------------------------------------------------- - } +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 } + +-------------------------------------------------------------------------- + +instance_decl_part :: { [RdrNameInstDecl] } +instance_decl_part : {- empty -} { [] } + | instance_decl_part inst_decl { $2 : $1 } + +inst_decl :: { RdrNameInstDecl } +inst_decl : src_loc 'instance' type '=' qvar_name ';' + { InstDecl $3 + EmptyMonoBinds {- No bindings -} + [] {- No user pragmas -} + (Just $5) {- Dfun id -} + $1 + } + +-------------------------------------------------------------------------- + +decls_part :: { [(Version, RdrNameTyClDecl)] } +decls_part + : {- empty -} { [] } + | 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 -} { \_ -> [] } + | 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 } + +opt_version :: { Version } +opt_version : version { $1 } + | {- empty -} { initialVersion } + +opt_decl_context :: { RdrNameContext } +opt_decl_context : { [] } + | context '=>' { $1 } + +---------------------------------------------------------------------------- constrs :: { [RdrNameConDecl] {- empty for handwritten abstract -} } - : { [] } - | EQUAL constrs1 { $2 } + : { [] } + | '=' constrs1 { $2 } constrs1 :: { [RdrNameConDecl] } constrs1 : constr { [$1] } - | constr VBAR constrs1 { $1 : $3 } + | constr '|' constrs1 { $1 : $3 } constr :: { RdrNameConDecl } -constr : data_name batypes { ConDecl $1 [] (VanillaCon $2) mkIfaceSrcLoc } - | data_name OCURLY fields1 CCURLY { ConDecl $1 [] (RecCon $3) mkIfaceSrcLoc } +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 : { [] } - | EQUAL data_name atype { [ConDecl $2 [] (NewCon $3) mkIfaceSrcLoc] } +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] } -deriving :: { Maybe [RdrName] } - : { Nothing } - | DERIVING OPAREN tc_names1 CPAREN { Just $3 } +ex_stuff :: { ([HsTyVarBndr RdrName], RdrNameContext) } +ex_stuff : { ([],[]) } + | '__forall' tv_bndrs opt_context '=>' { ($2,$3) } batypes :: { [RdrNameBangType] } batypes : { [] } | batype batypes { $1 : $2 } batype :: { RdrNameBangType } -batype : atype { Unbanged $1 } - | BANG atype { Banged $2 } +batype : tatype { unbangedType $1 } + | '!' tatype { BangType MarkedStrict $2 } + | '!' '!' tatype { BangType MarkedUnboxed $3 } fields1 :: { [([RdrName], RdrNameBangType)] } fields1 : field { [$1] } - | field COMMA fields1 { $1 : $3 } + | field ',' fields1 { $1 : $3 } field :: { ([RdrName], RdrNameBangType) } -field : var_names1 DCOLON type { ($1, Unbanged $3) } - | var_names1 DCOLON BANG 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) } + -------------------------------------------------------------------------- - } -forall :: { [HsTyVar RdrName] } -forall : OBRACK tv_bndrs CBRACK { $2 } +type :: { RdrNameHsType } +type : '__forall' tv_bndrs + opt_context '=>' type { mkHsForAllTy (Just $2) $3 $5 } + | btype '->' type { HsFunTy $1 $3 } + | btype { $1 } + +opt_context :: { RdrNameContext } +opt_context : { [] } + | context { $1 } context :: { RdrNameContext } -context : { [] } - | OCURLY context_list1 CCURLY { $2 } +context : '(' context_list1 ')' { $2 } + | '{' context_list1 '}' { $2 } -- Backward compatibility context_list1 :: { RdrNameContext } context_list1 : class { [$1] } - | class COMMA context_list1 { $1 : $3 } + | class ',' context_list1 { $1 : $3 } -class :: { (RdrName, RdrNameHsType) } -class : tc_name atype { ($1, $2) } +class :: { HsPred RdrName } +class : qcls_name atypes { (HsClassP $1 $2) } + | ipvar_name '::' type { (HsIParam $1 $3) } -type :: { RdrNameHsType } -type : FORALL forall context DARROW type { mkHsForAllTy $2 $3 $5 } - | btype RARROW type { MonoFunTy $1 $3 } - | btype { $1 } +types0 :: { [RdrNameHsType] {- Zero or more -} } +types0 : {- empty -} { [ ] } + | type { [ $1 ] } + | types2 { $1 } types2 :: { [RdrNameHsType] {- Two or more -} } -types2 : type COMMA type { [$1,$3] } - | type COMMA types2 { $1 : $3 } +types2 : type ',' type { [$1,$3] } + | type ',' types2 { $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 : tc_name { MonoTyVar $1 } - | tv_name { MonoTyVar $1 } - | OPAREN types2 CPAREN { MonoTupleTy dummyRdrTcName $2 } - | OBRACK type CBRACK { MonoListTy dummyRdrTcName $2 } - | OCURLY tc_name atype CCURLY { MonoDictTy $2 $3 } - | OPAREN type CPAREN { $2 } +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 { $1 } - -var_occ :: { OccName } -var_occ : VARID { VarOcc $1 } - | VARSYM { VarOcc $1 } - | BANG { VarOcc SLIT("!") {-sigh, double-sigh-} } + | atype atypes { $1 : $2 } +-------------------------------------------------------------------------- -tc_occ :: { OccName } -tc_occ : CONID { TCOcc $1 } - | CONSYM { TCOcc $1 } - | OPAREN RARROW CPAREN { TCOcc SLIT("->") } +-- versions of type/btype/atype that cant begin with '!' (or '.') +-- for use where the kind is definitely known NOT to be '$' + +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 } +--------------------------------------------------------------------- -entity_occ :: { OccName } -entity_occ : var_occ { $1 } - | tc_occ { $1 } - | RARROW { TCOcc SLIT("->") {- Allow un-paren'd arrow -} } +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 + +mod_name :: { ModuleName } + : CONID { mkSysModuleNameFS $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 } -val_occ :: { OccName } -val_occ : var_occ { $1 } - | CONID { VarOcc $1 } - | CONSYM { VarOcc $1 } +var_name :: { RdrName } +var_name : var_occ { mkRdrUnqual $1 } -val_occs1 :: { [OccName] } - : val_occ { [$1] } - | val_occ val_occs1 { $1 : $2 } +qvar_name :: { RdrName } +qvar_name : var_name { $1 } + | QVARID { mkIfaceOrig varName $1 } +ipvar_name :: { RdrName } + : IPVARID { mkRdrUnqual (mkSysOccFS varName (tailFS $1)) } -qvar_name :: { RdrName } - : QVARID { varQual $1 } - | QVARSYM { varQual $1 } +qvar_names1 :: { [RdrName] } +qvar_names1 : qvar_name { [$1] } + | qvar_name qvar_names1 { $1 : $2 } -var_name :: { RdrName } -var_name : var_occ { Unqual $1 } +var_names :: { [RdrName] } +var_names : { [] } + | var_name var_names { $1 : $2 } var_names1 :: { [RdrName] } -var_names1 : var_name { [$1] } - | var_name var_names1 { $1 : $2 } +var_names1 : var_name var_names { $1 : $2 } -any_var_name :: {RdrName} -any_var_name : var_name { $1 } - | qvar_name { $1 } +--------------------------------------------------- + +data_occ :: { OccName } + : CONID { mkSysOccFS dataName $1 } qdata_name :: { RdrName } -qdata_name : QCONID { varQual $1 } - | QCONSYM { varQual $1 } + : data_occ { mkRdrUnqual $1 } + | QCONID { mkIfaceOrig dataName $1 } + +var_or_data_name :: { RdrName } + : qvar_name { $1 } + | qdata_name { $1 } + +--------------------------------------------------- +tc_occ :: { OccName } + : CONID { mkSysOccFS tcName $1 } + +qtc_name :: { RdrName } + : tc_occ { mkRdrUnqual $1 } + | QCONID { mkIfaceOrig tcName $1 } + +--------------------------------------------------- +qcls_name :: { RdrName } + : CONID { mkRdrUnqual (mkSysOccFS clsName $1) } + | QCONID { mkIfaceOrig clsName $1 } + +--------------------------------------------------- +tv_name :: { RdrName } + : var_fs { mkRdrUnqual (mkSysOccFS tvName $1) } -data_name :: { RdrName } -data_name : CONID { Unqual (VarOcc $1) } - | CONSYM { Unqual (VarOcc $1) } +tv_bndr :: { HsTyVarBndr RdrName } + : tv_name '::' akind { IfaceTyVar $1 $3 } + | tv_name { IfaceTyVar $1 liftedTypeKind } +tv_bndrs :: { [HsTyVarBndr RdrName] } + : tv_bndrs1 { $1 } + | '[' tv_bndrs1 ']' { $2 } -- Backward compatibility -tc_names1 :: { [RdrName] } - : tc_name { [$1] } - | tc_name COMMA tc_names1 { $1 : $3 } +tv_bndrs1 :: { [HsTyVarBndr RdrName] } + : { [] } + | tv_bndr tv_bndrs1 { $1 : $2 } -tc_name :: { RdrName } -tc_name : tc_occ { Unqual $1 } - | QCONID { tcQual $1 } +--------------------------------------------------- +fds :: { [([RdrName], [RdrName])] } + : {- empty -} { [] } + | '|' fds1 { reverse $2 } -tv_name :: { RdrName } -tv_name : VARID { Unqual (TvOcc $1) } +fds1 :: { [([RdrName], [RdrName])] } + : fds1 ',' fd { $3 : $1 } + | fd { [$1] } -tv_names :: { [RdrName] } - : { [] } - | tv_name tv_names { $1 : $2 } +fd :: { ([RdrName], [RdrName]) } + : varids0 '->' varids0 { (reverse $1, reverse $3) } -tv_bndr :: { HsTyVar RdrName } -tv_bndr : tv_name DCOLON akind { IfaceTyVar $1 $3 } - | tv_name { UserTyVar $1 } - -tv_bndrs :: { [HsTyVar RdrName] } - : { [] } - | tv_bndr tv_bndrs { $1 : $2 } +varids0 :: { [RdrName] } + : {- empty -} { [] } + | varids0 tv_name { $2 : $1 } +--------------------------------------------------- kind :: { Kind } : akind { $1 } - | akind RARROW kind { mkArrowKind $1 $3 } + | akind '->' kind { mkArrowKind $1 $3 } akind :: { Kind } - : VARSYM { mkTypeKind {- ToDo: check that it's "*" -} } - | OPAREN kind CPAREN { $2 --------------------------------------------------------------------------- + : VARSYM { if $1 == SLIT("*") then + liftedTypeKind + else if $1 == SLIT("?") then + openTypeKind + else if $1 == SLIT("\36") then + usageTypeKind -- dollar + else panic "ParseInterface: akind" } + | '(' kind ')' { $2 } +-------------------------------------------------------------------------- -instances_part :: { [RdrNameInstDecl] } -instances_part : INSTANCES_PART instdecls { $2 } - | { [] } - -instdecls :: { [RdrNameInstDecl] } -instdecls : { [] } - | instd instdecls { $1 : $2 } +id_info :: { [HsIdInfo RdrName] } + : id_info_item { [$1] } + | id_info_item id_info { $1 : $2 } + +id_info_item :: { HsIdInfo RdrName } + : '__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) } + +inline_prag :: { InlinePragInfo } + : {- empty -} { AlwaysActive } + | '[' INTEGER ']' { ActiveAfter (fromInteger $2) } + +------------------------------------------------------- +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 } + + | 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 } + : '@' 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 } + + | core_lit { UfLit $1 } + | '(' core_expr ')' { $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 } + +rec_binds :: { [(UfBinder RdrName, UfExpr RdrName)] } + : { [] } + | core_val_bndr '=' core_expr ';' rec_binds { ($1,$3) : $5 } + +core_alts :: { [UfAlt RdrName] } + : { [] } + | 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) } + | '(' ')' { (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 } + +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 } + | '__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 } + | 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 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 : {% 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)) } + +------------------------------------------------------------------- + +-- Haskell code +{ +happyError :: P a +happyError buf PState{ loc = loc } = PFailed (ifaceParseErr buf loc) -instd :: { RdrNameInstDecl } -instd : INSTANCE type EQUAL var_name SEMI - { InstDecl $2 - EmptyMonoBinds {- No bindings -} - [] {- No user pragmas -} - (Just $4) {- Dfun id -} - mkIfaceSrcLoc --------------------------------------------------------------------------- - } +mk_con_decl name (ex_tvs, ex_ctxt) details loc = mkConDecl name ex_tvs ex_ctxt details loc +}