X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Frename%2FParseIface.y;h=cf0bf83aa8adeee20a3391ec33c6d94cdc338e64;hb=495ef8bd9ef30bffe50ea399b91e3ba09646b59a;hp=8110d2702e3af79ec1d2b30751f6871f9f4b2970;hpb=b5c71bff716366ae888bf120776d3e163c86c60a;p=ghc-hetmet.git diff --git a/ghc/compiler/rename/ParseIface.y b/ghc/compiler/rename/ParseIface.y index 8110d27..cf0bf83 100644 --- a/ghc/compiler/rename/ParseIface.y +++ b/ghc/compiler/rename/ParseIface.y @@ -1,3 +1,32 @@ +{- Notes about the syntax of interface files + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +The header +~~~~~~~~~~ + interface "edison" M 4 6 2 ! 406 Module M, version 4, from package 'edison', + Fixities version 6, rules version 2 + Interface syntax version 406 + ! means M contains orphans + +Import declarations +~~~~~~~~~~~~~~~~~~~ + import Foo ; To compile M I used nothing from Foo, but it's + below me in the hierarchy + + import Foo ! @ ; Ditto, but the ! means that Foo contains orphans + and the @ means that Foo is a boot interface + + import Foo :: 3 ; To compile M I used everything from Foo, which has + module version 3 + + import Foo :: 3 2 6 a 1 b 3 c 7 ; To compile M I used Foo. It had + module version 3 + fixity version 2 + rules version 6 + and some specific things besides. + +-} + + { module ParseIface ( parseIface, IfaceStuff(..) ) where @@ -5,11 +34,12 @@ module ParseIface ( parseIface, IfaceStuff(..) ) where import HsSyn -- quite a bit of stuff import RdrHsSyn -- oodles of synonyms -import HsTypes ( mkHsForAllTy, mkHsUsForAllTy ) +import HsTypes ( mkHsForAllTy, mkHsUsForAllTy, mkHsTupCon ) import HsCore +import Demand ( mkStrictnessInfo ) import Literal ( Literal(..), mkMachInt, mkMachInt64, mkMachWord, mkMachWord64 ) import BasicTypes ( Fixity(..), FixityDirection(..), - NewOrData(..), Version + NewOrData(..), Version, initialVersion, Boxity(..) ) import CostCentre ( CostCentre(..), IsCafCC(..), IsDupdCC(..) ) import CallConv ( cCallConv ) @@ -19,7 +49,7 @@ import IdInfo ( ArityInfo, exactArity, CprInfo(..), InlinePragInfo(..) import PrimOp ( CCall(..), CCallTarget(..) ) import Lex -import RnMonad ( ImportVersion, LocalVersion, ParsedIface(..), WhatsImported(..), +import RnMonad ( ImportVersion, ParsedIface(..), WhatsImported(..), RdrNamePragma, ExportItem, RdrAvailInfo, GenAvailInfo(..), WhetherHasOrphans, IsBootInterface ) @@ -32,11 +62,11 @@ import OccName ( mkSysOccFS, EncodedFS ) import Module ( ModuleName, PackageName, mkSysModuleFS, mkModule ) -import PrelInfo ( mkTupConRdrName, mkUbxTupConRdrName ) import SrcLoc ( SrcLoc ) import CmdLineOpts ( opt_InPackage ) import Maybes import Outputable +import List ( insert ) import GlaExts import FastString ( tailFS ) @@ -184,36 +214,42 @@ iface_stuff : iface { PIface $1 } iface :: { ParsedIface } -iface : '__interface' package mod_name INTEGER orphans checkVersion 'where' +iface : '__interface' package mod_name + version sub_versions + orphans checkVersion 'where' exports_part import_part + fix_decl_part instance_decl_part decls_part rules_and_deprecs { ParsedIface { pi_mod = mkModule $3 $2, -- Module itself - pi_vers = fromInteger $4, -- Module version - pi_orphan = $5, - pi_exports = $8, -- Exports - pi_usages = $9, -- Usages - pi_insts = $10, -- Local instances - pi_decls = $11, -- Decls - pi_rules = fst $12, -- Rules - pi_deprecs = snd $12 -- Deprecations - } } + pi_vers = $4, -- Module version + pi_orphan = $6, + pi_exports = $9, -- Exports + pi_usages = $10, -- Usages + pi_fixity = (fst $5,$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 fixities and rules (optional) +sub_versions :: { (Version,Version) } + : '[' version version ']' { ($2,$3) } + | {- empty -} { (initialVersion, initialVersion) } -------------------------------------------------------------------------- import_part :: { [ImportVersion OccName] } import_part : { [] } - | import_part import_decl { $2 : $1 } + | import_decl import_part { $1 : $2 } import_decl :: { ImportVersion OccName } -import_decl : 'import' mod_name INTEGER orphans is_boot whats_imported ';' - { (mkSysModuleFS $2, fromInteger $3, $4, $5, $6) } - -- import Foo 3 :: a 1 b 3 c 7 ; means import a,b,c from Foo - -- import Foo 3 ; means import all of Foo - -- import Foo 3 ! :: ...stuff... ; the ! means that Foo contains orphans +import_decl : 'import' mod_name orphans is_boot whats_imported ';' + { (mkSysModuleFS $2, $3, $4, $5) } orphans :: { WhetherHasOrphans } orphans : { False } @@ -224,34 +260,39 @@ is_boot : { False } | '@' { True } whats_imported :: { WhatsImported OccName } -whats_imported : { Everything } - | '::' name_version_pairs { Specifically $2 } +whats_imported : { NothingAtAll } + | '::' version { Everything $2 } + | '::' version version version name_version_pairs { Specifically $2 $3 $4 $5 } -name_version_pairs :: { [LocalVersion OccName] } +name_version_pairs :: { [(OccName, Version)] } name_version_pairs : { [] } | name_version_pair name_version_pairs { $1 : $2 } -name_version_pair :: { LocalVersion OccName } -name_version_pair : var_occ INTEGER { ($1, fromInteger $2) } - | tc_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' - mod_name entities ';' { (mkSysModuleFS $3, $4) : $1 } + | '__export' mod_name entities ';' + exports_part { (mkSysModuleFS $2, $3) : $5 } entities :: { [RdrAvailInfo] } entities : { [] } | entity entities { $1 : $2 } entity :: { RdrAvailInfo } -entity : tc_occ { AvailTC $1 [$1] } - | var_occ { Avail $1 } - | tc_occ stuff_inside { AvailTC $1 ($1:$2) } +entity : var_occ { Avail $1 } + | tc_occ { AvailTC $1 [$1] } | tc_occ '|' stuff_inside { AvailTC $1 $3 } + | tc_occ stuff_inside { AvailTC $1 (insert $1 $2) } + -- The 'insert' is important. The stuff_inside is sorted, and + -- insert keeps it that way. This is important when comparing + -- against the new interface file, which has the stuff in sorted order + -- If they differ, we'll bump the module number when it's unnecessary stuff_inside :: { [OccName] } stuff_inside : '{' val_occs '}' { $2 } @@ -267,14 +308,24 @@ val_occs :: { [OccName] } -------------------------------------------------------------------------- +fix_decl_part :: { [RdrNameFixitySig] } +fix_decl_part : {- empty -} { [] } + | fix_decls ';' { $1 } + +fix_decls :: { [RdrNameFixitySig] } +fix_decls : { [] } + | fix_decl fix_decls { $1 : $2 } + +fix_decl :: { RdrNameFixitySig } +fix_decl : src_loc fixity prec var_or_data_name { FixitySig $4 (Fixity $3 $2) $1 } + fixity :: { FixityDirection } fixity : 'infixl' { InfixL } | 'infixr' { InfixR } | 'infix' { InfixN } -mb_fix :: { Int } -mb_fix : {-nothing-} { 9 } - | INTEGER { (fromInteger $1) } +prec :: { Int } +prec : INTEGER { fromInteger $1 } ----------------------------------------------------------------------------- @@ -283,7 +334,7 @@ csigs : { [] } | 'where' '{' csigs1 '}' { $3 } csigs1 :: { [RdrNameSig] } -csigs1 : csig { [$1] } +csigs1 : { [] } | csig ';' csigs1 { $1 : $3 } csig :: { RdrNameSig } @@ -310,22 +361,20 @@ inst_decl : src_loc 'instance' type '=' var_name ';' decls_part :: { [(Version, RdrNameHsDecl)] } decls_part : {- empty -} { [] } - | decls_part version decl ';' { ($2,$3):$1 } + | opt_version decl ';' decls_part { ($1,$2):$4 } 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 + | src_loc 'data' opt_decl_context tc_name tv_bndrs constrs + { TyClD (TyData DataType $3 $4 $5 $6 (length $6) Nothing noDataPragmas $1) } + | src_loc 'newtype' opt_decl_context tc_name tv_bndrs newtype_constr + { TyClD (TyData NewType $3 $4 $5 $6 1 Nothing noDataPragmas $1) } + | src_loc 'class' opt_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 -} { \_ -> [] } @@ -371,7 +420,7 @@ rules :: { [RdrNameRuleDecl] } rule :: { RdrNameRuleDecl } rule : src_loc STRING rule_forall qvar_name - core_args '=' core_expr { IfaceRuleDecl $4 (UfRuleBody $2 $3 $5 $7) $1 } + core_args '=' core_expr { IfaceRule $2 $3 $4 $5 $7 $1 } rule_forall :: { [UfBinder RdrName] } rule_forall : '__forall' '{' core_bndrs '}' { $3 } @@ -380,11 +429,11 @@ rule_forall : '__forall' '{' core_bndrs '}' { $3 } deprecs :: { [RdrNameDeprecation] } deprecs : {- empty -} { [] } - | deprecs deprec ';' { $2 : $1 } + | deprec ';' deprecs { $1 : $3 } deprec :: { RdrNameDeprecation } -deprec : STRING { Deprecation (IEModuleContents undefined) $1 } - | deprec_name STRING { Deprecation $1 $2 } +deprec : src_loc STRING { Deprecation (IEModuleContents undefined) $2 $1 } + | src_loc deprec_name STRING { Deprecation $2 $3 $1 } -- SUP: TEMPORARY HACK deprec_name :: { RdrNameIE } @@ -394,11 +443,15 @@ deprec_name :: { RdrNameIE } ----------------------------------------------------------------------------- version :: { Version } -version : INTEGER { fromInteger $1 } +version : INTEGER { fromInteger $1 } -decl_context :: { RdrNameContext } -decl_context : { [] } - | '{' context_list1 '}' '=>' { $2 } +opt_version :: { Version } +opt_version : version { $1 } + | {- empty -} { initialVersion } + +opt_decl_context :: { RdrNameContext } +opt_decl_context : { [] } + | context '=>' { $1 } ---------------------------------------------------------------------------- @@ -421,9 +474,9 @@ newtype_constr : { [] } | src_loc '=' ex_stuff data_name '{' var_name '::' atype '}' { [mk_con_decl $4 $3 (NewCon $8 (Just $6)) $1] } -ex_stuff :: { ([HsTyVar RdrName], RdrNameContext) } +ex_stuff :: { ([HsTyVarBndr RdrName], RdrNameContext) } ex_stuff : { ([],[]) } - | '__forall' forall context '=>' { ($2,$3) } + | '__forall' tv_bndrs opt_context '=>' { ($2,$3) } batypes :: { [RdrNameBangType] } batypes : { [] } @@ -446,20 +499,21 @@ field : var_names1 '::' type { ($1, Unbanged $3) } type :: { RdrNameHsType } type : '__fuall' fuall '=>' type { mkHsUsForAllTy $2 $4 } - | '__forall' forall context '=>' type - { mkHsForAllTy (Just $2) $3 $5 } - | btype '->' type { MonoFunTy $1 $3 } + | '__forall' tv_bndrs + opt_context '=>' type { mkHsForAllTy (Just $2) $3 $5 } + | btype '->' type { HsFunTy $1 $3 } | btype { $1 } fuall :: { [RdrName] } fuall : '[' uv_bndrs ']' { $2 } -forall :: { [HsTyVar RdrName] } -forall : '[' tv_bndrs ']' { $2 } +opt_context :: { RdrNameContext } +opt_context : { [] } + | context { $1 } context :: { RdrNameContext } -context : { [] } - | '{' context_list1 '}' { $2 } +context : '(' context_list1 ')' { $2 } + | '{' context_list1 '}' { $2 } -- Backward compatibility context_list1 :: { RdrNameContext } context_list1 : class { [$1] } @@ -480,27 +534,25 @@ types2 : type ',' type { [$1,$3] } btype :: { RdrNameHsType } btype : atype { $1 } - | btype atype { MonoTyApp $1 $2 } - | '__u' usage atype { MonoUsgTy $2 $3 } + | btype atype { HsAppTy $1 $2 } + | '__u' usage atype { HsUsgTy $2 $3 } -usage :: { MonoUsageAnn RdrName } -usage : '-' { MonoUsOnce } - | '!' { MonoUsMany } - | uv_name { MonoUsVar $1 } +usage :: { HsUsageAnn RdrName } +usage : '-' { HsUsOnce } + | '!' { HsUsMany } + | uv_name { HsUsVar $1 } atype :: { RdrNameHsType } -atype : qtc_name { MonoTyVar $1 } - | tv_name { MonoTyVar $1 } - | '(' types2 ')' { MonoTupleTy $2 True{-boxed-} } - | '(#' types0 '#)' { MonoTupleTy $2 False{-unboxed-} } - | '[' type ']' { MonoListTy $2 } - | '{' qcls_name atypes '}' { MonoDictTy $2 $3 } - | '{' ipvar_name '::' type '}' { MonoIParamTy $2 $4 } +atype : 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 } --- This one is dealt with via qtc_name --- | '(' ')' { MonoTupleTy [] True } - atypes :: { [RdrNameHsType] {- Zero or more -} } atypes : { [] } | atype atypes { $1 : $2 } @@ -626,13 +678,17 @@ tv_name :: { RdrName } : VARID { mkSysUnqual tvName $1 } | VARSYM { mkSysUnqual tvName $1 {- Allow t2 as a tyvar -} } -tv_bndr :: { HsTyVar RdrName } +tv_bndr :: { HsTyVarBndr RdrName } : tv_name '::' akind { IfaceTyVar $1 $3 } | tv_name { IfaceTyVar $1 boxedTypeKind } -tv_bndrs :: { [HsTyVar RdrName] } +tv_bndrs :: { [HsTyVarBndr RdrName] } +tv_bndrs : tv_bndrs1 { $1 } + | '[' tv_bndrs1 ']' { $2 } -- Backward compatibility + +tv_bndrs1 :: { [HsTyVarBndr RdrName] } : { [] } - | tv_bndr tv_bndrs { $1 : $2 } + | tv_bndr tv_bndrs1 { $1 : $2 } --------------------------------------------------- fds :: { [([RdrName], [RdrName])] } @@ -674,15 +730,21 @@ id_info_item :: { HsIdInfo RdrName } : '__A' INTEGER { HsArity (exactArity (fromInteger $2)) } | '__U' inline_prag core_expr { HsUnfold $2 $3 } | '__M' { HsCprInfo } - | '__S' { HsStrictness (HsStrictnessInfo $1) } + | '__S' { HsStrictness (mkStrictnessInfo $1) } | '__C' { HsNoCafRefs } | '__P' qvar_name { HsWorker $2 } inline_prag :: { InlinePragInfo } : {- empty -} { NoInlinePragInfo } - | '[' INTEGER ']' { IMustNotBeINLINEd True (Just (fromInteger $2)) } -- INLINE n - | '[' '!' ']' { IMustNotBeINLINEd True Nothing } -- NOTINLINE - | '[' '!' INTEGER ']' { IMustNotBeINLINEd False (Just (fromInteger $3)) } -- NOINLINE n + | '[' from_prag phase ']' { IMustNotBeINLINEd $2 $3 } + +from_prag :: { Bool } + : {- empty -} { True } + | '!' { False } + +phase :: { Maybe Int } + : {- empty -} { Nothing } + | INTEGER { Just (fromInteger $1) } ------------------------------------------------------- core_expr :: { UfExpr RdrName } @@ -697,14 +759,14 @@ core_expr : '\\' core_bndrs '->' core_expr { foldr UfLam $4 $2 } | '__litlit' STRING atype { UfLitLit $2 $3 } - | '__inline_me' core_expr { UfNote UfInlineMe $2 } - | '__inline_call' core_expr { UfNote UfInlineCall $2 } - | '__coerce' atype core_expr { UfNote (UfCoerce $2) $3 } - | scc core_expr { UfNote (UfSCC $1) $2 } | fexpr { $1 } fexpr :: { UfExpr RdrName } fexpr : fexpr core_arg { UfApp $1 $2 } + | 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 } @@ -718,25 +780,13 @@ core_args :: { [UfExpr RdrName] } core_aexpr :: { UfExpr RdrName } -- Atomic expressions core_aexpr : qvar_name { UfVar $1 } | qdata_name { UfVar $1 } - -- This one means that e.g. "True" will parse as - -- (UfVar True_Id) rather than (UfCon True_Con []). - -- No big deal; it'll be inlined in a jiffy. I tried - -- parsing it to (Con con []) directly, but got bitten - -- when a real constructor Id showed up in an interface - -- file. As usual, a hack bites you in the end. - -- If you want to get a UfCon, then use the - -- curly-bracket notation (True {}). - --- This one is dealt with by qdata_name: see above comments --- | '(' ')' { UfTuple (mkTupConRdrName 0) [] } | core_lit { UfLit $1 } | '(' core_expr ')' { $2 } - -- Tuple construtors are for the *worker* of the tuple - -- Going direct saves needless messing about - | '(' comma_exprs2 ')' { UfTuple (mkRdrNameWkr (mkTupConRdrName (length $2))) $2 } - | '(#' comma_exprs0 '#)' { UfTuple (mkRdrNameWkr (mkUbxTupConRdrName (length $2))) $2 } + | '(' ')' { 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 @@ -765,7 +815,7 @@ 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 } @@ -775,8 +825,9 @@ core_pat :: { (UfConAlt RdrName, [RdrName]) } core_pat : core_lit { (UfLitAlt $1, []) } | '__litlit' STRING atype { (UfLitLitAlt $2 $3, []) } | qdata_name core_pat_names { (UfDataAlt $1, $2) } - | '(' comma_var_names1 ')' { (UfDataAlt (mkTupConRdrName (length $2)), $2) } - | '(#' comma_var_names1 '#)' { (UfDataAlt (mkUbxTupConRdrName (length $2)), $2) } + | '(' ')' { (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 } @@ -860,6 +911,9 @@ cc_caf :: { IsCafCC } 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)) }