X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Frename%2FParseIface.y;h=2eb828b3813541ebedea1fa9fa80d49f24529f71;hb=438596897ebbe25a07e1c82085cfbc5bdb00f09e;hp=5107c5bc0faf811b7ec63ade1ae1385e87bc9280;hpb=1fb1ab5d53a09607e7f6d2450806760688396387;p=ghc-hetmet.git diff --git a/ghc/compiler/rename/ParseIface.y b/ghc/compiler/rename/ParseIface.y index 5107c5b..2eb828b 100644 --- a/ghc/compiler/rename/ParseIface.y +++ b/ghc/compiler/rename/ParseIface.y @@ -1,289 +1,325 @@ { -#include "HsVersions.h" -module ParseIface ( parseIface ) where - -IMP_Ubiq(){-uitous-} +module ParseIface ( parseIface, IfaceStuff(..) ) where -import CmdLineOpts ( opt_IgnoreIfacePragmas ) +#include "HsVersions.h" import HsSyn -- quite a bit of stuff import RdrHsSyn -- oodles of synonyms -import HsDecls ( HsIdInfo(..) ) +import HsDecls ( HsIdInfo(..), HsStrictnessInfo(..) ) import HsTypes ( mkHsForAllTy ) import HsCore -import Literal -import HsPragmas ( noGenPragmas, noDataPragmas, noClassPragmas, noClassOpPragmas, noInstancePragmas ) -import IdInfo ( exactArity, mkStrictnessInfo, mkBottomStrictnessInfo, - ArgUsageInfo, FBTypeInfo +import Const ( Literal(..), mkMachInt_safe ) +import BasicTypes ( IfaceFlavour(..), Fixity(..), FixityDirection(..), + NewOrData(..), Version ) -import Kind ( Kind, mkArrowKind, mkTypeKind ) +import HsPragmas ( noDataPragmas, noClassPragmas ) +import Type ( Kind, mkArrowKind, boxedTypeKind, openTypeKind ) +import IdInfo ( ArityInfo, exactArity ) import Lex -import RnMonad ( SYN_IE(ImportVersion), SYN_IE(LocalVersion), ParsedIface(..), - SYN_IE(RdrNamePragma), SYN_IE(ExportItem) +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 ) -import SrcLoc ( mkIfaceSrcLoc ) -import Util ( panic{-, pprPanic ToDo:rm-} ) -import ParseType ( parseType ) -import ParseUnfolding ( parseUnfolding ) +import Name ( OccName(..), isTCOcc, Provenance, Module, + mkTupNameStr, mkUbxTupNameStr + ) +import SrcLoc ( SrcLoc ) import Maybes +import Outputable ------------------------------------------------------------------ - -parseIface ls = parseIToks (lexIface ls) - ------------------------------------------------------------------ +import GlaExts } -%name parseIToks +%name parseIface %tokentype { IfaceToken } %monad { IfM }{ thenIf }{ returnIf } +%lexer { lexIface } { 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 $$ } - - INTEGER_LIT { ITinteger_lit } - FLOAT_LIT { ITfloat_lit } - RATIONAL_LIT { ITrational_lit } - ADDR_LIT { ITaddr_lit } - LIT_LIT { ITlit_lit } - STRING_LIT { ITstring_lit } - - UNKNOWN { ITunknown $$ } + '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 } + + '__interface' { ITinterface } -- GHC-extension keywords + '__export' { ITexport } + '__instimport' { ITinstimport } + '__forall' { ITforall } + '__letrec' { ITletrec } + '__coerce' { ITcoerce } + '__inline' { ITinline } + '__DEFAULT' { ITdefaultbranch } + '__bot' { ITbottom } + '__integer' { ITinteger_lit } + '__float' { ITfloat_lit } + '__rational' { ITrational_lit } + '__addr' { ITaddr_lit } + '__litlit' { ITlit_lit } + '__string' { ITstring_lit } + '__ccall' { ITccall $$ } + '__scc' { ITscc $$ } + '__a' { ITtypeapp } + + '__A' { ITarity } + '__P' { ITspecialise } + '__C' { ITnocaf } + '__U' { ITunfold $$ } + '__S' { ITstrict $$ } + + '..' { 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 $$ } + QCONSYM { ITqconsym $$ } + + PRAGMA { ITpragma $$ } + + CHAR { ITchar $$ } + STRING { ITstring $$ } + INTEGER { ITinteger $$ } + RATIONAL { ITrational $$ } + + UNKNOWN { ITunknown $$ } %% +-- 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 CONID INTEGER - inst_modules_part - usages_part - exports_part fixities_part - instances_part +iface : '__interface' CONID INTEGER checkVersion 'where' + import_part + instance_import_part + exports_part + fixities_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 - } + (reverse $6) -- Usages + (reverse $8) -- Exports + (reverse $7) -- Instance import modules + (reverse $9) -- Fixities + (reverse $11) -- Decls + (reverse $10) -- 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) } +import_part :: { [ImportVersion OccName] } +import_part : { [] } + | import_part import_decl { $2 : $1 } + +import_decl :: { ImportVersion OccName } +import_decl : 'import' mod_name opt_bang INTEGER '::' whats_imported ';' + { ($2, $3, fromInteger $4, $6) } -versions_part :: { [LocalVersion OccName] } -versions_part : VERSIONS_PART name_version_pairs { $2 } - | { [] } +whats_imported :: { WhatsImported OccName } +whats_imported : { Everything } + | name_version_pair name_version_pairs { Specifically ($1:$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 : entity_occ INTEGER { ($1, fromInteger $2) } + +instance_import_part :: { [Module] } +instance_import_part : { [] } + | instance_import_part '__instimport' mod_name ';' + { $3 : $1 } + -------------------------------------------------------------------------- - } exports_part :: { [ExportItem] } -exports_part : EXPORTS_PART export_items { $2 } - | { [] } +exports_part : { [] } + | exports_part '__export' opt_bang mod_name entities ';' + { ($4,$3,$5) : $1 } -export_items :: { [ExportItem] } -export_items : { [] } - | mod_name entities SEMI export_items { ($1,$2) : $4 } +opt_bang :: { IfaceFlavour } +opt_bang : { HiFile } + | '!' { HiBootFile } -entities :: { [(OccName, [OccName])] } +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 : 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 } stuff_inside :: { [OccName] } -stuff_inside : OPAREN val_occs1 CPAREN { $2 +stuff_inside : '{' val_occs '}' { $2 } + -------------------------------------------------------------------------- - } -inst_modules_part :: { [Module] } -inst_modules_part : { [] } - | INSTANCE_MODULES_PART mod_list { $2 } +fixities_part :: { [(OccName,Fixity)] } +fixities_part : { [] } + | fixities_part fixity_decl ';' { $2 : $1 } -mod_list :: { [Module] } -mod_list : { [] } - | mod_name mod_list { $1 : $2 --------------------------------------------------------------------------- - } +fixity_decl :: { (OccName,Fixity) } +fixity_decl : 'infixl' mb_fix val_occ { ($3, Fixity $2 InfixL) } + | 'infixr' mb_fix val_occ { ($3, Fixity $2 InfixR) } + | 'infix' mb_fix val_occ { ($3, Fixity $2 InfixN) } + +mb_fix :: { Int } +mb_fix : {-nothing-} { 9 } + | INTEGER { (fromInteger $1) } -fixities_part :: { [(OccName,Fixity)] } -fixities_part : { [] } - | FIXITIES_PART fixes { $2 } +----------------------------------------------------------------------------- -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 { ClassOpSig $2 Nothing $4 $1 } + | src_loc var_name '=' '::' type + { ClassOpSig $2 + (Just (error "Un-filled-in default method")) + $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 -} + (Just $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 + { TyD (TySynonym $3 $4 $6 $1) } + | src_loc 'data' decl_context data_fs tv_bndrs constrs + { TyD (TyData DataType $3 (Unqual (TCOcc $4)) $5 $6 Nothing noDataPragmas $1) } + | src_loc 'newtype' decl_context tc_name tv_bndrs newtype_constr + { TyD (TyData NewType $3 $4 $5 $6 Nothing noDataPragmas $1) } + | src_loc 'class' decl_context tc_name tv_bndrs csigs + { ClD (mkClassDecl $3 $4 $5 $6 EmptyMonoBinds + noClassPragmas $1) } +maybe_idinfo :: { RdrName -> [HsIdInfo RdrName] } +maybe_idinfo : {- empty -} { \_ -> [] } + | src_loc PRAGMA { \x -> + case parseIface $2 $1 of + Succeeded (PIdInfo id_info) -> id_info + other -> pprPanic "IdInfo parse failed" + (ppr x) + } + +----------------------------------------------------------------------------- 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 $2 $3 $4 $5 $6 noDataPragmas mkIfaceSrcLoc) } - | NEWTYPE decl_context tc_name tv_bndrs EQUAL constr1 deriving SEMI - { TyD (TyNew $2 $3 $4 $6 $7 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 } - - -csigs :: { [RdrNameSig] } -csigs : { [] } - | WHERE OCURLY csigs1 CCURLY { $3 } + | '{' context_list1 '}' '=>' { $2 } -csigs1 :: { [RdrNameSig] } -csigs1 : csig { [$1] } - | csig SEMI csigs1 { $1 : $3 } - -csig :: { RdrNameSig } -csig : var_name DCOLON type { ClassOpSig $1 $1 $3 mkIfaceSrcLoc ---------------------------------------------------------------- - } -constrs :: { [RdrNameConDecl] } - : { [] } - | EQUAL constrs1 { $2 } +constrs :: { [RdrNameConDecl] {- empty for handwritten abstract -} } + : { [] } + | '=' constrs1 { $2 } constrs1 :: { [RdrNameConDecl] } constrs1 : constr { [$1] } - | constr VBAR constrs1 { $1 : $3 } + | constr '|' constrs1 { $1 : $3 } constr :: { RdrNameConDecl } -constr : data_name batypes { ConDecl $1 $2 mkIfaceSrcLoc } - | data_name OCURLY fields1 CCURLY { RecConDecl $1 $3 mkIfaceSrcLoc } +constr : src_loc ex_stuff data_fs batypes { mkConDecl (Unqual (VarOcc $3)) $2 (VanillaCon $4) $1 } + | src_loc ex_stuff data_fs '{' fields1 '}' { mkConDecl (Unqual (VarOcc $3)) $2 (RecCon $5) $1 } + -- We use "data_fs" so as to include () -constr1 :: { RdrNameConDecl {- For a newtype -} } -constr1 : data_name atype { NewConDecl $1 $2 mkIfaceSrcLoc } +newtype_constr :: { [RdrNameConDecl] {- Empty if handwritten abstract -} } +newtype_constr : { [] } + | src_loc '=' ex_stuff data_name atype { [mkConDecl $4 $3 (NewCon $5) $1] } -deriving :: { Maybe [RdrName] } - : { Nothing } - | DERIVING OPAREN qtc_names1 CPAREN { Just $3 } +ex_stuff :: { ([HsTyVar RdrName], RdrNameContext) } +ex_stuff : { ([],[]) } + | '__forall' forall context '=>' { ($2,$3) } batypes :: { [RdrNameBangType] } batypes : { [] } @@ -291,43 +327,40 @@ batypes : { [] } batype :: { RdrNameBangType } batype : atype { Unbanged $1 } - | BANG atype { Banged $2 } + | '!' atype { Banged $2 } 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) } -------------------------------------------------------------------------- - } + +type :: { RdrNameHsType } +type : '__forall' forall context '=>' type + { mkHsForAllTy $2 $3 $5 } + | btype '->' type { MonoFunTy $1 $3 } + | btype { $1 } 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 :: { (RdrName, RdrNameHsType) } -class : qtc_name atype { ($1, $2) } - -type :: { RdrNameHsType } -type : FORALL forall context DARROW type { mkHsForAllTy $2 $3 $5 } - | tautype { $1 } + | class ',' context_list1 { $1 : $3 } -tautype :: { RdrNameHsType } -tautype : btype { $1 } - | btype RARROW tautype { MonoFunTy $1 $3 } +class :: { (RdrName, [RdrNameHsType]) } +class : qtc_name atypes { ($1, $2) } 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 } @@ -336,88 +369,100 @@ btype : atype { $1 } atype :: { RdrNameHsType } atype : qtc_name { MonoTyVar $1 } | tv_name { MonoTyVar $1 } - | OPAREN types2 CPAREN { MonoTupleTy dummyRdrTcName $2 } - | OBRACK type CBRACK { MonoListTy dummyRdrTcName $2 } - | OCURLY qtc_name atype CCURLY { MonoDictTy $2 $3 } - | OPAREN type CPAREN { $2 } + | '(' ')' { 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 } + | '(' type ')' { $2 } atypes :: { [RdrNameHsType] {- Zero or more -} } atypes : { [] } - | atype atypes { $1 : $2 + | 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-} } +var_fs :: { FAST_STRING } + : VARID { $1 } + | VARSYM { $1 } + | '-' { SLIT("-") } + | '!' { SLIT("!") } -tc_occ :: { OccName } -tc_occ : CONID { TCOcc $1 } - | CONSYM { TCOcc $1 } - | OPAREN RARROW CPAREN { TCOcc SLIT("->") } +data_fs :: { FAST_STRING } + : CONID { $1 } + | CONSYM { $1 } + | '->' { SLIT("->") } + | '(' ')' { SLIT("()") } + | '(' commas ')' { snd (mkTupNameStr $2) } + | '[' ']' { SLIT("[]") } -entity_occ :: { OccName } -entity_occ : var_occ { $1 } - | tc_occ { $1 } - | RARROW { TCOcc SLIT("->") {- Allow un-paren'd arrow -} } +commas :: { Int } + : ',' { 2 } + | commas ',' { $1 + 1 } val_occ :: { OccName } -val_occ : var_occ { $1 } - | CONID { VarOcc $1 } - | CONSYM { VarOcc $1 } + : var_fs { VarOcc $1 } + | data_fs { VarOcc $1 } -val_occs1 :: { [OccName] } +val_occs :: { [OccName] } : val_occ { [$1] } - | val_occ val_occs1 { $1 : $2 } + | val_occ val_occs { $1 : $2 } - -qvar_name :: { RdrName } - : QVARID { varQual $1 } - | QVARSYM { varQual $1 } +entity_occ :: { OccName } + : var_fs { VarOcc $1 } + | data_fs { TCOcc $1 } var_name :: { RdrName } -var_name : var_occ { Unqual $1 } +var_name : var_fs { Unqual (VarOcc $1) } -var_names1 :: { [RdrName] } -var_names1 : var_name { [$1] } - | var_name var_names1 { $1 : $2 } +qvar_name :: { RdrName } +qvar_name : var_name { $1 } + | QVARID { lexVarQual $1 } + | QVARSYM { lexVarQual $1 } -any_var_name :: {RdrName} -any_var_name : var_name { $1 } - | qvar_name { $1 } +var_names :: { [RdrName] } +var_names : { [] } + | var_name var_names { $1 : $2 } -qdata_name :: { RdrName } -qdata_name : QCONID { varQual $1 } - | QCONSYM { varQual $1 } +var_names1 :: { [RdrName] } +var_names1 : var_name var_names { $1 : $2 } data_name :: { RdrName } -data_name : CONID { Unqual (VarOcc $1) } + : CONID { Unqual (VarOcc $1) } | CONSYM { Unqual (VarOcc $1) } + | '(' commas ')' { Unqual (VarOcc (snd (mkTupNameStr $2))) } + | '[' ']' { Unqual (VarOcc SLIT("[]")) } - -qtc_name :: { RdrName } -qtc_name : QCONID { tcQual $1 } - -qtc_names1 :: { [RdrName] } - : qtc_name { [$1] } - | qtc_name COMMA qtc_names1 { $1 : $3 } +qdata_name :: { RdrName } +qdata_name : data_name { $1 } + | QCONID { lexVarQual $1 } + | QCONSYM { lexVarQual $1 } + +qdata_names :: { [RdrName] } +qdata_names : { [] } + | qdata_name qdata_names { $1 : $2 } tc_name :: { RdrName } -tc_name : tc_occ { Unqual $1 } +tc_name : CONID { Unqual (TCOcc $1) } + | CONSYM { Unqual (TCOcc $1) } + | '(' '->' ')' { Unqual (TCOcc SLIT("->")) } + | '(' commas ')' { Unqual (TCOcc (snd (mkTupNameStr $2))) } + | '[' ']' { Unqual (TCOcc SLIT("[]")) } + +qtc_name :: { RdrName } +qtc_name : tc_name { $1 } + | QCONID { lexTcQual $1 } + | QCONSYM { lexTcQual $1 } tv_name :: { RdrName } tv_name : VARID { Unqual (TvOcc $1) } - -tv_names :: { [RdrName] } - : { [] } - | tv_name tv_names { $1 : $2 } + | VARSYM { Unqual (TvOcc $1) {- Allow t2 as a tyvar -} } tv_bndr :: { HsTyVar RdrName } -tv_bndr : tv_name DCOLON akind { IfaceTyVar $1 $3 } +tv_bndr : tv_name '::' akind { IfaceTyVar $1 $3 } | tv_name { UserTyVar $1 } tv_bndrs :: { [HsTyVar RdrName] } @@ -426,29 +471,196 @@ tv_bndrs :: { [HsTyVar RdrName] } 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 + 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 : { [] } + | id_info_item id_info { $1 : $2 } + +id_info_item :: { HsIdInfo RdrName } +id_info_item : '__A' arity_info { HsArity $2 } + | strict_info { HsStrictness $1 } + | '__bot' { HsStrictness HsBottom } + | '__U' core_expr { HsUnfold $1 (Just $2) } + | '__U' { HsUnfold $1 Nothing } + | '__P' spec_tvs + atypes '=' core_expr { HsSpecialise $2 $3 $5 } + | '__C' { HsNoCafRefs } + + +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 } + +------------------------------------------------------- +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' 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 } + : '__a' 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 } + | '(' ')' { UfTuple (mkTupConRdrName 0) [] } + | '(' comma_exprs2 ')' { UfTuple (mkTupConRdrName (length $2)) $2 } + | '(#' core_expr '#)' { UfTuple (mkUbxTupConRdrName 1) [$2] } + | '(#' comma_exprs2 '#)' { UfTuple (mkUbxTupConRdrName (length $2)) $2 } + +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) } + | '__DEFAULT' { (UfDefault, []) } + | '(' core_pat ')' { $2 } + + +comma_var_names :: { [RdrName] } -- Zero, or two or more +comma_var_names : { [] } + | var_name ',' comma_var_names1 { $1 : $3 } + +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 } + +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 : '__a' tv_name '::' akind { UfTyBinder $2 $4 } + | '__a' tv_name { UfTyBinder $2 boxedTypeKind } + +ccall_string :: { FAST_STRING } + : STRING { $1 } + | VARID { $1 } + | CONID { $1 } + +------------------------------------------------------------------- + +src_loc :: { SrcLoc } +src_loc : {% getSrcLocIf } + +checkVersion :: { () } + : {-empty-} {% checkVersion Nothing } + | INTEGER {% checkVersion (Just (fromInteger $1)) } + +------------------------------------------------------------------- + +-- Haskell code +{ -instdecls :: { [RdrNameInstDecl] } -instdecls : { [] } - | instd instdecls { $1 : $2 } +data IfaceStuff = PIface ParsedIface + | PIdInfo [HsIdInfo RdrName] + | PType RdrNameHsType -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 +}