X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Frename%2FParseIface.y;h=f821b31294a520dbe288e476243df051b97e9755;hb=f83a5a68edb4b9dbdff1eebeed84527711efc728;hp=813a0f94a3906da60b6aff119cab3652b36a01f5;hpb=d9de62d5329690525828f0e6453a086c54cb4517;p=ghc-hetmet.git diff --git a/ghc/compiler/rename/ParseIface.y b/ghc/compiler/rename/ParseIface.y index 813a0f9..f821b31 100644 --- a/ghc/compiler/rename/ParseIface.y +++ b/ghc/compiler/rename/ParseIface.y @@ -1,289 +1,415 @@ { -#include "HsVersions.h" -module ParseIface ( parseIface ) where +module ParseIface ( parseIface, IfaceStuff(..) ) where -IMP_Ubiq(){-uitous-} +#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, mkHsUsForAllTy ) import HsCore -import Literal -import BasicTypes ( IfaceFlavour(..), Fixity(..), FixityDirection(..), NewOrData(..), Version(..) ) +import Const ( Literal(..), mkMachInt_safe ) +import BasicTypes ( Fixity(..), FixityDirection(..), + NewOrData(..), Version + ) +import CostCentre ( CostCentre(..), IsCafCC(..), IsDupdCC(..) ) import HsPragmas ( noDataPragmas, noClassPragmas ) -import Kind ( Kind, mkArrowKind, mkBoxedTypeKind ) -import IdInfo ( ArgUsageInfo, FBTypeInfo ) +import Type ( Kind, mkArrowKind, boxedTypeKind, openTypeKind, UsageAnn(..) ) +import IdInfo ( ArityInfo, exactArity, CprInfo(..), InlinePragInfo(..) ) import Lex -import RnMonad ( SYN_IE(ImportVersion), SYN_IE(LocalVersion), ParsedIface(..), - SYN_IE(RdrNamePragma), SYN_IE(ExportItem), SYN_IE(RdrAvailInfo), GenAvailInfo(..) +import RnMonad ( ImportVersion, LocalVersion, ParsedIface(..), WhatsImported(..), + RdrNamePragma, ExportItem, RdrAvailInfo, GenAvailInfo(..), WhetherHasOrphans ) 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 RdrName ( RdrName, mkRdrUnqual, mkSysQual, mkSysUnqual ) +import Name ( OccName, Provenance ) +import OccName ( mkSysOccFS, + tcName, varName, ipName, dataName, clsName, tvName, uvName, + EncodedFS + ) +import Module ( ModuleName, mkSysModuleFS ) +import PrelMods ( mkTupNameStr, mkUbxTupNameStr ) +import PrelInfo ( mkTupConRdrName, mkUbxTupConRdrName ) +import SrcLoc ( SrcLoc ) import Maybes +import Outputable + +import GlaExts +#if __HASKELL1__ > 4 +import Ratio ( (%) ) +#endif } %name parseIface -%tokentype { IfaceToken } -%monad { IfM }{ thenIf }{ returnIf } -%lexer { lexIface } { ITeof } +%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 $$ } - QCONSYM { ITqconsym $$ } - - TYPE_PART { ITtysig _ _ } - ARITY_PART { ITarity } - STRICT_PART { ITstrict $$ } - UNFOLD_PART { ITunfold $$ } - 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 $$ } + 'case' { ITcase } -- Haskell keywords + 'class' { ITclass } + 'data' { ITdata } + 'default' { ITdefault } + 'deriving' { ITderiving } + 'do' { ITdo } + 'else' { ITelse } + 'if' { ITif } + 'import' { ITimport } + 'in' { ITin } + 'infix' { ITinfix } + 'infixl' { ITinfixl } + 'infixr' { ITinfixr } + 'instance' { ITinstance } + 'let' { ITlet } + 'module' { ITmodule } + 'newtype' { ITnewtype } + 'of' { ITof } + 'then' { ITthen } + 'type' { ITtype } + 'where' { ITwhere } + 'as' { ITas } + 'qualified' { ITqualified } + 'hiding' { IThiding } + + 'forall' { ITforall } -- GHC extension keywords + 'foreign' { ITforeign } + 'export' { ITexport } + 'label' { ITlabel } + 'dynamic' { ITdynamic } + 'unsafe' { ITunsafe } + 'with' { ITwith } + + '__interface' { ITinterface } -- interface keywords + '__export' { IT__export } + '__forall' { IT__forall } + '__depends' { ITdepends } + '__letrec' { ITletrec } + '__coerce' { ITcoerce } + '__inline_call'{ ITinlineCall } + '__inline_me' { ITinlineMe } + '__DEFAULT' { ITdefaultbranch } + '__bot' { ITbottom } + '__integer' { ITinteger_lit } + '__float' { ITfloat_lit } + '__rational' { ITrational_lit } + '__addr' { ITaddr_lit } + '__litlit' { ITlit_lit } + '__string' { ITstring_lit } + '__ccall' { ITccall $$ } + '__scc' { ITscc } + '__sccC' { ITsccAllCafs } + + '__u' { ITusage } + '__fuall' { ITfuall } + + '__A' { ITarity } + '__P' { ITspecialise } + '__C' { ITnocaf } + '__U' { ITunfold $$ } + '__S' { ITstrict $$ } + '__R' { ITrules } + '__D' { ITdeprecated } + '__M' { ITcprinfo $$ } + + '..' { ITdotdot } -- reserved symbols + '::' { ITdcolon } + '=' { ITequal } + '\\' { ITlam } + '|' { ITvbar } + '<-' { ITlarrow } + '->' { ITrarrow } + '@' { ITat } + '~' { ITtilde } + '=>' { ITdarrow } + '-' { ITminus } + '!' { ITbang } + + '/\\' { ITbiglam } -- GHC-extension symbols + + '{' { ITocurly } -- special symbols + '}' { ITccurly } + '[' { ITobrack } + ']' { ITcbrack } + '(' { IToparen } + ')' { ITcparen } + '(#' { IToubxparen } + '#)' { ITcubxparen } + ';' { ITsemi } + ',' { ITcomma } + + VARID { ITvarid $$ } -- 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 CONID INTEGER - inst_modules_part - usages_part - exports_part fixities_part - instances_part +-- 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 - { 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 opt_bang INTEGER DCOLON name_version_pairs SEMI - { ($1, $2, fromInteger $3, $5) } - -versions_part :: { [LocalVersion OccName] } -versions_part : VERSIONS_PART name_version_pairs { $2 } - | { [] } + 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 whats_imported ';' + { (mkSysModuleFS $2, fromInteger $3, $4, $5) } + -- 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 + +orphans :: { WhetherHasOrphans } +orphans : { 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 : entity_occ INTEGER { ($1, fromInteger $2) --------------------------------------------------------------------------- - } +name_version_pair : var_occ INTEGER { ($1, fromInteger $2) } + | tc_occ INTEGER { ($1, fromInteger $2) } -exports_part :: { [ExportItem] } -exports_part : EXPORTS_PART export_items { $2 } - | { [] } -export_items :: { [ExportItem] } -export_items : { [] } - | opt_bang mod_name entities SEMI export_items { ($2,$1,$3) : $5 } +-------------------------------------------------------------------------- -opt_bang :: { IfaceFlavour } -opt_bang : { HiFile } - | BANG { HiBootFile } +exports_part :: { [ExportItem] } +exports_part : { [] } + | exports_part '__export' + mod_fs entities ';' { (mkSysModuleFS $3, $4) : $1 } 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 VBAR stuff_inside { AvailTC $1 $3 } +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 : OPAREN val_occs1 CPAREN { $2 --------------------------------------------------------------------------- - } +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 } -inst_modules_part :: { [Module] } -inst_modules_part : { [] } - | INSTANCE_MODULES_PART mod_list { $2 } -mod_list :: { [Module] } -mod_list : { [] } - | mod_name mod_list { $1 : $2 -------------------------------------------------------------------------- - } -fixities_part :: { [(OccName,Fixity)] } -fixities_part : { [] } - | FIXITIES_PART fixes { $2 } +fixity :: { FixityDirection } +fixity : 'infixl' { InfixL } + | 'infixr' { InfixR } + | 'infix' { InfixN } + +mb_fix :: { Int } +mb_fix : {-nothing-} { 9 } + | INTEGER { (fromInteger $1) } + +----------------------------------------------------------------------------- -fixes :: { [(OccName,Fixity)] } -fixes : { [] } - | fix fixes { $1 : $2 } +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 } -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 } +instance_decl_part :: { [RdrNameInstDecl] } +instance_decl_part : {- empty -} { [] } + | instance_decl_part inst_decl { $2 : $1 } -topdecls :: { [(Version, RdrNameHsDecl)] } -topdecls : { [] } - | version topdecl topdecls { ($1,$2) : $3 } +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 } + +----------------------------------------------------------------------------- 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 - { - case $2 of - ITtysig sig idinfo_part -> - let info = - case idinfo_part of - Nothing -> [] - Just s -> - let { (Succeeded id_info) = parseUnfolding s } in id_info - (Succeeded tp) = parseType sig - in - SigD (IfaceSig $1 tp info mkIfaceSrcLoc) } - decl_context :: { RdrNameContext } decl_context : { [] } - | OCURLY context_list1 CCURLY DARROW { $2 } - - -csigs :: { [RdrNameSig] } -csigs : { [] } - | WHERE OCURLY csigs1 CCURLY { $3 } - -csigs1 :: { [RdrNameSig] } -csigs1 : csig { [$1] } - | csig SEMI csigs1 { $1 : $3 } + | '{' context_list1 '}' '=>' { $2 } -csig :: { RdrNameSig } -csig : var_name DCOLON type { ClassOpSig $1 Nothing $3 mkIfaceSrcLoc } - | var_name EQUAL DCOLON type { ClassOpSig $1 (Just (error "Un-filled-in default method")) - $4 mkIfaceSrcLoc ----------------------------------------------------------------- - } +---------------------------------------------------------------------------- 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 data_name batypes { mkConDecl $3 $2 (VanillaCon $4) $1 } + | src_loc ex_stuff data_name '{' fields1 '}' { mkConDecl $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 : { [] } + | 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] } -deriving :: { Maybe [RdrName] } - : { Nothing } - | DERIVING OPAREN tc_names1 CPAREN { Just $3 } +ex_stuff :: { ([HsTyVar RdrName], RdrNameContext) } +ex_stuff : { ([],[]) } + | '__forall' forall context '=>' { ($2,$3) } batypes :: { [RdrNameBangType] } batypes : { [] } @@ -291,160 +417,445 @@ batypes : { [] } batype :: { RdrNameBangType } batype : atype { Unbanged $1 } - | BANG atype { Banged $2 } + | '!' atype { Banged $2 } + | '!' '!' atype { Unpacked $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 : 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 : OBRACK tv_bndrs CBRACK { $2 } +forall : '[' tv_bndrs ']' { $2 } context :: { RdrNameContext } context : { [] } - | OCURLY context_list1 CCURLY { $2 } + | '{' context_list1 '}' { $2 } 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 { (HsPClass $1 $2) } + | IPVARID '::' type { (HsPIParam (mkSysUnqual ipName $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 } + | '__u' usage atype { MonoUsgTy $2 $3 } + +usage :: { MonoUsageAnn RdrName } +usage : '-' { MonoUsOnce } + | '!' { MonoUsMany } + | uv_name { MonoUsVar $1 } atype :: { RdrNameHsType } -atype : tc_name { MonoTyVar $1 } +atype : qtc_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 } + | '(' types2 ')' { MonoTupleTy $2 True{-boxed-} } + | '(#' types0 '#)' { MonoTupleTy $2 False{-unboxed-} } + | '[' type ']' { MonoListTy $2 } + | '{' qcls_name atypes '}' { MonoDictTy $2 $3 } + | '{' IPVARID '::' type '}' { MonoIParamTy (mkSysUnqual ipName $2) $4 } + | '(' type ')' { $2 } + +-- This one is dealt with via qtc_name +-- | '(' ')' { MonoTupleTy [] True } atypes :: { [RdrNameHsType] {- Zero or more -} } atypes : { [] } - | atype atypes { $1 : $2 + | atype atypes { $1 : $2 } --------------------------------------------------------------------- - } - -mod_name :: { Module } +mod_fs :: { EncodedFS } : CONID { $1 } -var_occ :: { OccName } -var_occ : VARID { VarOcc $1 } - | VARSYM { VarOcc $1 } - | BANG { VarOcc SLIT("!") {-sigh, double-sigh-} } +mod_name :: { ModuleName } + : mod_fs { mkSysModuleFS $1 } -tc_occ :: { OccName } -tc_occ : CONID { TCOcc $1 } - | CONSYM { TCOcc $1 } - | OPAREN RARROW CPAREN { TCOcc SLIT("->") } -entity_occ :: { OccName } -entity_occ : var_occ { $1 } - | tc_occ { $1 } - | RARROW { TCOcc SLIT("->") {- Allow un-paren'd arrow -} } +--------------------------------------------------- +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") } -val_occ :: { OccName } -val_occ : var_occ { $1 } - | CONID { VarOcc $1 } - | CONSYM { VarOcc $1 } +qvar_fs :: { (EncodedFS, EncodedFS) } + : QVARID { $1 } + | QVARSYM { $1 } -val_occs1 :: { [OccName] } - : val_occ { [$1] } - | val_occ val_occs1 { $1 : $2 } +var_occ :: { OccName } + : var_fs { mkSysOccFS varName $1 } +var_name :: { RdrName } +var_name : var_occ { mkRdrUnqual $1 } qvar_name :: { RdrName } - : QVARID { lexVarQual $1 } - | QVARSYM { lexVarQual $1 } +qvar_name : var_name { $1 } + | qvar_fs { mkSysQual varName $1 } -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 } +--------------------------------------------------- +-- For some bizarre reason, +-- (,,,) is dealt with by the parser +-- Foo.(,,,) is dealt with by the lexer +-- Sigh -qdata_name :: { RdrName } -qdata_name : QCONID { lexVarQual $1 } - | QCONSYM { lexVarQual $1 } +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_name : CONID { Unqual (VarOcc $1) } - | CONSYM { Unqual (VarOcc $1) } + : 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_names1 :: { [RdrName] } - : tc_name { [$1] } - | tc_name COMMA tc_names1 { $1 : $3 } +--------------------------------------------------- +tc_fs :: { EncodedFS } + : data_fs { $1 } + +tc_occ :: { OccName } + : tc_fs { mkSysOccFS tcName $1 } tc_name :: { RdrName } -tc_name : tc_occ { Unqual $1 } - | QCONID { lexTcQual $1 } + : tc_occ { mkRdrUnqual $1 } -tv_name :: { RdrName } -tv_name : VARID { Unqual (TvOcc $1) } - | VARSYM { Unqual (TvOcc $1) {- Allow t2 as a tyvar -} } +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 } -tv_names :: { [RdrName] } +uv_bndr :: { RdrName } + : uv_name { $1 } + +uv_bndrs :: { [RdrName] } : { [] } - | tv_name tv_names { $1 : $2 } + | 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_bndr : tv_name DCOLON akind { IfaceTyVar $1 $3 } - | tv_name { UserTyVar $1 } + : 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 RARROW kind { mkArrowKind $1 $3 } + | akind '->' kind { mkArrowKind $1 $3 } akind :: { Kind } - : VARSYM { mkBoxedTypeKind {- ToDo: check that it's "*" -} } - | OPAREN kind CPAREN { $2 --------------------------------------------------------------------------- + : VARSYM { if $1 == SLIT("*") then + boxedTypeKind + else if $1 == SLIT("?") then + openTypeKind + else panic "ParseInterface: akind" } + | '(' kind ')' { $2 } +-------------------------------------------------------------------------- -instances_part :: { [RdrNameInstDecl] } -instances_part : INSTANCES_PART instdecls { $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 $1 } + | '__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 } + + | con_or_primop '{' core_args '}' { UfCon $1 $3 } + | '__litlit' STRING atype { UfCon (UfLitLitCon $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 {}). + + | core_lit { UfCon (UfLitCon $1) [] } + | '(' core_expr ')' { $2 } + | '(' comma_exprs2 ')' { UfTuple (mkTupConRdrName (length $2)) $2 } + | '(#' comma_exprs0 '#)' { UfTuple (mkUbxTupConRdrName (length $2)) $2 } + +-- This one is dealt with by qdata_name: see above comments +-- | '(' ')' { UfTuple (mkTupConRdrName 0) [] } + +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_dyn, is_casm, may_gc) = $1 + in + UfCCallOp $2 is_dyn 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 core_pat_names { (UfDataCon $1, $2) } + | '(' comma_var_names1 ')' { (UfDataCon (mkTupConRdrName (length $2)), $2) } + | '(#' comma_var_names1 '#)' { (UfDataCon (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_safe $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 } + +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 STRING '}' { AllCafsCC $3 $4 } + | '__scc' '{' cc_name mod_name STRING cc_dup cc_caf '}' + { NormalCC { cc_name = $3, cc_mod = $4, cc_grp = $5, + cc_is_dupd = $6, cc_is_caf = $7 } } + +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 :: P a +happyError buf PState{ loc = loc } = PFailed (ifaceParseErr buf loc) -instdecls :: { [RdrNameInstDecl] } -instdecls : { [] } - | instd instdecls { $1 : $2 } +data IfaceStuff = PIface EncodedFS{-.hi module name-} ParsedIface + | PIdInfo [HsIdInfo RdrName] + | PType RdrNameHsType + | PRules [RdrNameRuleDecl] + | PDeprecs [RdrNameDeprecation] -instd :: { RdrNameInstDecl } -instd : INSTANCE type EQUAL var_name SEMI - { InstDecl $2 - EmptyMonoBinds {- No bindings -} - [] {- No user pragmas -} - (Just $4) {- Dfun id -} - mkIfaceSrcLoc --------------------------------------------------------------------------- - } +mkConDecl name (ex_tvs, ex_ctxt) details loc = ConDecl name ex_tvs ex_ctxt details loc +}