1 {- Notes about the syntax of interface files
2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 interface "edison" M 4 6 2 ! 406 Module M, version 4, from package 'edison',
6 Fixities version 6, rules version 2
7 Interface syntax version 406
8 ! means M contains orphans
12 import Foo ; To compile M I used nothing from Foo, but it's
13 below me in the hierarchy
15 import Foo ! @ ; Ditto, but the ! means that Foo contains orphans
16 and the @ means that Foo is a boot interface
18 import Foo :: 3 ; To compile M I used everything from Foo, which has
21 import Foo :: 3 2 6 a 1 b 3 c 7 ; To compile M I used Foo. It had
25 and some specific things besides.
31 module ParseIface ( parseIface, IfaceStuff(..) ) where
33 #include "HsVersions.h"
35 import HsSyn -- quite a bit of stuff
36 import RdrHsSyn -- oodles of synonyms
37 import HsTypes ( mkHsForAllTy, mkHsUsForAllTy, mkHsTupCon )
39 import Demand ( mkStrictnessInfo )
40 import Literal ( Literal(..), mkMachInt, mkMachInt64, mkMachWord, mkMachWord64 )
41 import BasicTypes ( Fixity(..), FixityDirection(..),
42 NewOrData(..), Version, initialVersion, Boxity(..)
44 import CostCentre ( CostCentre(..), IsCafCC(..), IsDupdCC(..) )
45 import CallConv ( cCallConv )
46 import HsPragmas ( noDataPragmas, noClassPragmas )
47 import Type ( Kind, mkArrowKind, boxedTypeKind, openTypeKind, UsageAnn(..) )
48 import IdInfo ( ArityInfo, exactArity, CprInfo(..), InlinePragInfo(..) )
49 import PrimOp ( CCall(..), CCallTarget(..) )
52 import RnMonad ( ImportVersion, ParsedIface(..), WhatsImported(..),
53 RdrNamePragma, ExportItem, RdrAvailInfo, GenAvailInfo(..),
54 WhetherHasOrphans, IsBootInterface
56 import Bag ( emptyBag, unitBag, snocBag )
57 import FiniteMap ( emptyFM, unitFM, addToFM, plusFM, bagToFM, FiniteMap )
58 import RdrName ( RdrName, mkRdrUnqual, mkSysQual, mkSysUnqual, mkRdrNameWkr )
59 import Name ( OccName, Provenance )
60 import OccName ( mkSysOccFS,
61 tcName, varName, ipName, dataName, clsName, tvName, uvName,
64 import Module ( ModuleName, PackageName, mkSysModuleFS, mkModule )
65 import SrcLoc ( SrcLoc )
66 import CmdLineOpts ( opt_InPackage )
69 import List ( insert )
72 import FastString ( tailFS )
81 %monad { P }{ thenP }{ returnP }
82 %lexer { lexer } { ITeof }
86 'case' { ITcase } -- Haskell keywords
89 'default' { ITdefault }
90 'deriving' { ITderiving }
100 'instance' { ITinstance }
102 'module' { ITmodule }
103 'newtype' { ITnewtype }
105 'qualified' { ITqualified }
110 'forall' { ITforall } -- GHC extension keywords
111 'foreign' { ITforeign }
112 'export' { ITexport }
114 'dynamic' { ITdynamic }
115 'unsafe' { ITunsafe }
117 'stdcall' { ITstdcallconv }
118 'ccall' { ITccallconv }
120 '__interface' { ITinterface } -- interface keywords
121 '__export' { IT__export }
122 '__depends' { ITdepends }
123 '__forall' { IT__forall }
124 '__letrec' { ITletrec }
125 '__coerce' { ITcoerce }
126 '__inline_me' { ITinlineMe }
127 '__inline_call'{ ITinlineCall }
128 '__DEFAULT' { ITdefaultbranch }
130 '__integer' { ITinteger_lit }
131 '__float' { ITfloat_lit }
132 '__word' { ITword_lit }
133 '__int64' { ITint64_lit }
134 '__word64' { ITword64_lit }
135 '__rational' { ITrational_lit }
136 '__addr' { ITaddr_lit }
137 '__litlit' { ITlit_lit }
138 '__string' { ITstring_lit }
139 '__ccall' { ITccall $$ }
141 '__sccC' { ITsccAllCafs }
144 '__fuall' { ITfuall }
147 '__P' { ITspecialise }
149 '__U' { ITunfold $$ }
150 '__S' { ITstrict $$ }
153 '__D' { ITdeprecated }
155 '..' { ITdotdot } -- reserved symbols
168 '/\\' { ITbiglam } -- GHC-extension symbols
170 '{' { ITocurly } -- special symbols
181 VARID { ITvarid $$ } -- identifiers
183 VARSYM { ITvarsym $$ }
184 CONSYM { ITconsym $$ }
185 QVARID { ITqvarid $$ }
186 QCONID { ITqconid $$ }
187 QVARSYM { ITqvarsym $$ }
188 QCONSYM { ITqconsym $$ }
190 IPVARID { ITipvarid $$ } -- GHC extension
192 PRAGMA { ITpragma $$ }
195 STRING { ITstring $$ }
196 INTEGER { ITinteger $$ }
197 RATIONAL { ITrational $$ }
198 CLITLIT { ITlitlit $$ }
200 UNKNOWN { ITunknown $$ }
203 -- iface_stuff is the main production.
204 -- It recognises (a) a whole interface file
205 -- (b) a type (so that type sigs can be parsed lazily)
206 -- (c) the IdInfo part of a signature (same reason)
208 iface_stuff :: { IfaceStuff }
209 iface_stuff : iface { PIface $1 }
211 | id_info { PIdInfo $1 }
212 | '__R' rules { PRules $2 }
213 | '__D' deprecs { PDeprecs $2 }
216 iface :: { ParsedIface }
217 iface : '__interface' package mod_name
219 orphans checkVersion 'where'
227 pi_mod = mkModule $3 $2, -- Module itself
228 pi_vers = $4, -- Module version
230 pi_exports = $9, -- Exports
231 pi_usages = $10, -- Usages
232 pi_fixity = (fst $5,$11), -- Fixies
233 pi_insts = $12, -- Local instances
234 pi_decls = $13, -- Decls
235 pi_rules = (snd $5,fst $14), -- Rules
236 pi_deprecs = snd $14 -- Deprecations
239 -- Versions for fixities and rules (optional)
240 sub_versions :: { (Version,Version) }
241 : '[' version version ']' { ($2,$3) }
242 | {- empty -} { (initialVersion, initialVersion) }
244 --------------------------------------------------------------------------
246 import_part :: { [ImportVersion OccName] }
248 | import_decl import_part { $1 : $2 }
250 import_decl :: { ImportVersion OccName }
251 import_decl : 'import' mod_name orphans is_boot whats_imported ';'
252 { (mkSysModuleFS $2, $3, $4, $5) }
254 orphans :: { WhetherHasOrphans }
258 is_boot :: { IsBootInterface }
262 whats_imported :: { WhatsImported OccName }
263 whats_imported : { NothingAtAll }
264 | '::' version { Everything $2 }
265 | '::' version version version name_version_pairs { Specifically $2 $3 $4 $5 }
267 name_version_pairs :: { [(OccName, Version)] }
268 name_version_pairs : { [] }
269 | name_version_pair name_version_pairs { $1 : $2 }
271 name_version_pair :: { (OccName, Version) }
272 name_version_pair : var_occ version { ($1, $2) }
273 | tc_occ version { ($1, $2) }
276 --------------------------------------------------------------------------
278 exports_part :: { [ExportItem] }
279 exports_part : { [] }
280 | '__export' mod_name entities ';'
281 exports_part { (mkSysModuleFS $2, $3) : $5 }
283 entities :: { [RdrAvailInfo] }
285 | entity entities { $1 : $2 }
287 entity :: { RdrAvailInfo }
288 entity : var_occ { Avail $1 }
289 | tc_occ { AvailTC $1 [$1] }
290 | tc_occ '|' stuff_inside { AvailTC $1 $3 }
291 | tc_occ stuff_inside { AvailTC $1 (insert $1 $2) }
292 -- The 'insert' is important. The stuff_inside is sorted, and
293 -- insert keeps it that way. This is important when comparing
294 -- against the new interface file, which has the stuff in sorted order
295 -- If they differ, we'll bump the module number when it's unnecessary
297 stuff_inside :: { [OccName] }
298 stuff_inside : '{' val_occs '}' { $2 }
300 val_occ :: { OccName }
304 val_occs :: { [OccName] }
306 | val_occ val_occs { $1 : $2 }
309 --------------------------------------------------------------------------
311 fix_decl_part :: { [RdrNameFixitySig] }
312 fix_decl_part : {- empty -} { [] }
313 | fix_decls ';' { $1 }
315 fix_decls :: { [RdrNameFixitySig] }
317 | fix_decl fix_decls { $1 : $2 }
319 fix_decl :: { RdrNameFixitySig }
320 fix_decl : src_loc fixity prec var_or_data_name { FixitySig $4 (Fixity $3 $2) $1 }
322 fixity :: { FixityDirection }
323 fixity : 'infixl' { InfixL }
324 | 'infixr' { InfixR }
328 prec : INTEGER { fromInteger $1 }
330 -----------------------------------------------------------------------------
332 csigs :: { [RdrNameSig] }
334 | 'where' '{' csigs1 '}' { $3 }
336 csigs1 :: { [RdrNameSig] }
338 | csig ';' csigs1 { $1 : $3 }
340 csig :: { RdrNameSig }
341 csig : src_loc var_name '::' type { mkClassOpSig False $2 $4 $1 }
342 | src_loc var_name '=' '::' type { mkClassOpSig True $2 $5 $1 }
344 --------------------------------------------------------------------------
346 instance_decl_part :: { [RdrNameInstDecl] }
347 instance_decl_part : {- empty -} { [] }
348 | instance_decl_part inst_decl { $2 : $1 }
350 inst_decl :: { RdrNameInstDecl }
351 inst_decl : src_loc 'instance' type '=' var_name ';'
353 EmptyMonoBinds {- No bindings -}
354 [] {- No user pragmas -}
359 --------------------------------------------------------------------------
361 decls_part :: { [(Version, RdrNameHsDecl)] }
364 | opt_version decl ';' decls_part { ($1,$2):$4 }
366 decl :: { RdrNameHsDecl }
367 decl : src_loc var_name '::' type maybe_idinfo
368 { SigD (IfaceSig $2 $4 ($5 $2) $1) }
369 | src_loc 'type' tc_name tv_bndrs '=' type
370 { TyClD (TySynonym $3 $4 $6 $1) }
371 | src_loc 'data' opt_decl_context tc_name tv_bndrs constrs
372 { TyClD (TyData DataType $3 $4 $5 $6 (length $6) Nothing noDataPragmas $1) }
373 | src_loc 'newtype' opt_decl_context tc_name tv_bndrs newtype_constr
374 { TyClD (TyData NewType $3 $4 $5 $6 1 Nothing noDataPragmas $1) }
375 | src_loc 'class' opt_decl_context tc_name tv_bndrs fds csigs
376 { TyClD (mkClassDecl $3 $4 $5 $6 $7 EmptyMonoBinds
379 maybe_idinfo :: { RdrName -> [HsIdInfo RdrName] }
380 maybe_idinfo : {- empty -} { \_ -> [] }
381 | pragma { \x -> case $1 of
382 POk _ (PIdInfo id_info) -> id_info
384 pprPanic "IdInfo parse failed"
388 pragma :: { ParseResult IfaceStuff }
389 pragma : src_loc PRAGMA { parseIface $2 PState{ bol = 0#, atbol = 1#,
395 -----------------------------------------------------------------------------
397 rules_and_deprecs :: { ([RdrNameRuleDecl], [RdrNameDeprecation]) }
398 rules_and_deprecs : {- empty -} { ([], []) }
399 | rules_and_deprecs rule_or_deprec
401 append2 (xs1,ys1) (xs2,ys2) =
402 (xs1 `app` xs2, ys1 `app` ys2)
403 xs `app` [] = xs -- performance paranoia
404 xs `app` ys = xs ++ ys
408 rule_or_deprec :: { ([RdrNameRuleDecl], [RdrNameDeprecation]) }
409 rule_or_deprec : pragma { case $1 of
410 POk _ (PRules rules) -> (rules,[])
411 POk _ (PDeprecs deprecs) -> ([],deprecs)
412 PFailed err -> pprPanic "Rules/Deprecations parse failed" err
415 -----------------------------------------------------------------------------
417 rules :: { [RdrNameRuleDecl] }
419 | rule ';' rules { $1:$3 }
421 rule :: { RdrNameRuleDecl }
422 rule : src_loc STRING rule_forall qvar_name
423 core_args '=' core_expr { IfaceRule $2 $3 $4 $5 $7 $1 }
425 rule_forall :: { [UfBinder RdrName] }
426 rule_forall : '__forall' '{' core_bndrs '}' { $3 }
428 -----------------------------------------------------------------------------
430 deprecs :: { [RdrNameDeprecation] }
431 deprecs : {- empty -} { [] }
432 | deprec ';' deprecs { $1 : $3 }
434 deprec :: { RdrNameDeprecation }
435 deprec : src_loc STRING { Deprecation (IEModuleContents undefined) $2 $1 }
436 | src_loc deprec_name STRING { Deprecation $2 $3 $1 }
438 -- SUP: TEMPORARY HACK
439 deprec_name :: { RdrNameIE }
440 : var_name { IEVar $1 }
441 | data_name { IEThingAbs $1 }
443 -----------------------------------------------------------------------------
445 version :: { Version }
446 version : INTEGER { fromInteger $1 }
448 opt_version :: { Version }
449 opt_version : version { $1 }
450 | {- empty -} { initialVersion }
452 opt_decl_context :: { RdrNameContext }
453 opt_decl_context : { [] }
454 | context '=>' { $1 }
456 ----------------------------------------------------------------------------
458 constrs :: { [RdrNameConDecl] {- empty for handwritten abstract -} }
460 | '=' constrs1 { $2 }
462 constrs1 :: { [RdrNameConDecl] }
463 constrs1 : constr { [$1] }
464 | constr '|' constrs1 { $1 : $3 }
466 constr :: { RdrNameConDecl }
467 constr : src_loc ex_stuff data_name batypes { mk_con_decl $3 $2 (VanillaCon $4) $1 }
468 | src_loc ex_stuff data_name '{' fields1 '}' { mk_con_decl $3 $2 (RecCon $5) $1 }
469 -- We use "data_fs" so as to include ()
471 newtype_constr :: { [RdrNameConDecl] {- Empty if handwritten abstract -} }
472 newtype_constr : { [] }
473 | src_loc '=' ex_stuff data_name atype { [mk_con_decl $4 $3 (NewCon $5 Nothing) $1] }
474 | src_loc '=' ex_stuff data_name '{' var_name '::' atype '}'
475 { [mk_con_decl $4 $3 (NewCon $8 (Just $6)) $1] }
477 ex_stuff :: { ([HsTyVarBndr RdrName], RdrNameContext) }
478 ex_stuff : { ([],[]) }
479 | '__forall' tv_bndrs opt_context '=>' { ($2,$3) }
481 batypes :: { [RdrNameBangType] }
483 | batype batypes { $1 : $2 }
485 batype :: { RdrNameBangType }
486 batype : atype { Unbanged $1 }
487 | '!' atype { Banged $2 }
488 | '!' '!' atype { Unpacked $3 }
490 fields1 :: { [([RdrName], RdrNameBangType)] }
491 fields1 : field { [$1] }
492 | field ',' fields1 { $1 : $3 }
494 field :: { ([RdrName], RdrNameBangType) }
495 field : var_names1 '::' type { ($1, Unbanged $3) }
496 | var_names1 '::' '!' type { ($1, Banged $4) }
497 | var_names1 '::' '!' '!' type { ($1, Unpacked $5) }
498 --------------------------------------------------------------------------
500 type :: { RdrNameHsType }
501 type : '__fuall' fuall '=>' type { mkHsUsForAllTy $2 $4 }
502 | '__forall' tv_bndrs
503 opt_context '=>' type { mkHsForAllTy (Just $2) $3 $5 }
504 | btype '->' type { HsFunTy $1 $3 }
507 fuall :: { [RdrName] }
508 fuall : '[' uv_bndrs ']' { $2 }
510 opt_context :: { RdrNameContext }
514 context :: { RdrNameContext }
515 context : '(' context_list1 ')' { $2 }
516 | '{' context_list1 '}' { $2 } -- Backward compatibility
518 context_list1 :: { RdrNameContext }
519 context_list1 : class { [$1] }
520 | class ',' context_list1 { $1 : $3 }
522 class :: { HsPred RdrName }
523 class : qcls_name atypes { (HsPClass $1 $2) }
524 | ipvar_name '::' type { (HsPIParam $1 $3) }
526 types0 :: { [RdrNameHsType] {- Zero or more -} }
527 types0 : {- empty -} { [ ] }
531 types2 :: { [RdrNameHsType] {- Two or more -} }
532 types2 : type ',' type { [$1,$3] }
533 | type ',' types2 { $1 : $3 }
535 btype :: { RdrNameHsType }
537 | btype atype { HsAppTy $1 $2 }
538 | '__u' usage atype { HsUsgTy $2 $3 }
540 usage :: { HsUsageAnn RdrName }
541 usage : '-' { HsUsOnce }
543 | uv_name { HsUsVar $1 }
545 atype :: { RdrNameHsType }
546 atype : qtc_name { HsTyVar $1 }
547 | tv_name { HsTyVar $1 }
548 | '(' ')' { HsTupleTy (mkHsTupCon tcName Boxed []) [] }
549 | '(' types2 ')' { HsTupleTy (mkHsTupCon tcName Boxed $2) $2 }
550 | '(#' types0 '#)' { HsTupleTy (mkHsTupCon tcName Unboxed $2) $2 }
551 | '[' type ']' { HsListTy $2 }
552 | '{' qcls_name atypes '}' { mkHsDictTy $2 $3 }
553 | '{' ipvar_name '::' type '}' { mkHsIParamTy $2 $4 }
554 | '(' type ')' { $2 }
556 atypes :: { [RdrNameHsType] {- Zero or more -} }
558 | atype atypes { $1 : $2 }
559 ---------------------------------------------------------------------
560 package :: { PackageName }
562 | {- empty -} { opt_InPackage } -- Useful for .hi-boot files,
563 -- which can omit the package Id
564 -- Module loops are always within a package
566 mod_name :: { ModuleName }
567 : CONID { mkSysModuleFS $1 }
570 ---------------------------------------------------
571 var_fs :: { EncodedFS }
574 | 'as' { SLIT("as") }
575 | 'qualified' { SLIT("qualified") }
576 | 'hiding' { SLIT("hiding") }
577 | 'forall' { SLIT("forall") }
578 | 'foreign' { SLIT("foreign") }
579 | 'export' { SLIT("export") }
580 | 'label' { SLIT("label") }
581 | 'dynamic' { SLIT("dynamic") }
582 | 'unsafe' { SLIT("unsafe") }
583 | 'with' { SLIT("with") }
584 | 'ccall' { SLIT("ccall") }
585 | 'stdcall' { SLIT("stdcall") }
587 qvar_fs :: { (EncodedFS, EncodedFS) }
591 var_occ :: { OccName }
592 : var_fs { mkSysOccFS varName $1 }
594 var_name :: { RdrName }
595 var_name : var_occ { mkRdrUnqual $1 }
597 qvar_name :: { RdrName }
598 qvar_name : var_name { $1 }
599 | qvar_fs { mkSysQual varName $1 }
601 ipvar_name :: { RdrName }
602 : IPVARID { mkSysUnqual ipName (tailFS $1) }
604 var_names :: { [RdrName] }
606 | var_name var_names { $1 : $2 }
608 var_names1 :: { [RdrName] }
609 var_names1 : var_name var_names { $1 : $2 }
611 ---------------------------------------------------
612 -- For some bizarre reason,
613 -- (,,,) is dealt with by the parser
614 -- Foo.(,,,) is dealt with by the lexer
617 data_fs :: { EncodedFS }
621 qdata_fs :: { (EncodedFS, EncodedFS) }
625 data_occ :: { OccName }
626 : data_fs { mkSysOccFS dataName $1 }
628 data_name :: { RdrName }
629 : data_occ { mkRdrUnqual $1 }
631 qdata_name :: { RdrName }
632 qdata_name : data_name { $1 }
633 | qdata_fs { mkSysQual dataName $1 }
635 qdata_names :: { [RdrName] }
637 | qdata_name qdata_names { $1 : $2 }
639 var_or_data_name :: { RdrName }
643 ---------------------------------------------------
644 tc_fs :: { EncodedFS }
647 tc_occ :: { OccName }
648 : tc_fs { mkSysOccFS tcName $1 }
650 tc_name :: { RdrName }
651 : tc_occ { mkRdrUnqual $1 }
653 qtc_name :: { RdrName }
655 | qdata_fs { mkSysQual tcName $1 }
657 ---------------------------------------------------
658 cls_name :: { RdrName }
659 : data_fs { mkSysUnqual clsName $1 }
661 qcls_name :: { RdrName }
663 | qdata_fs { mkSysQual clsName $1 }
665 ---------------------------------------------------
666 uv_name :: { RdrName }
667 : VARID { mkSysUnqual uvName $1 }
669 uv_bndr :: { RdrName }
672 uv_bndrs :: { [RdrName] }
674 | uv_bndr uv_bndrs { $1 : $2 }
676 ---------------------------------------------------
677 tv_name :: { RdrName }
678 : VARID { mkSysUnqual tvName $1 }
679 | VARSYM { mkSysUnqual tvName $1 {- Allow t2 as a tyvar -} }
681 tv_bndr :: { HsTyVarBndr RdrName }
682 : tv_name '::' akind { IfaceTyVar $1 $3 }
683 | tv_name { IfaceTyVar $1 boxedTypeKind }
685 tv_bndrs :: { [HsTyVarBndr RdrName] }
686 tv_bndrs : tv_bndrs1 { $1 }
687 | '[' tv_bndrs1 ']' { $2 } -- Backward compatibility
689 tv_bndrs1 :: { [HsTyVarBndr RdrName] }
691 | tv_bndr tv_bndrs1 { $1 : $2 }
693 ---------------------------------------------------
694 fds :: { [([RdrName], [RdrName])] }
696 | '|' fds1 { reverse $2 }
698 fds1 :: { [([RdrName], [RdrName])] }
699 : fds1 ',' fd { $3 : $1 }
702 fd :: { ([RdrName], [RdrName]) }
703 : varids0 '->' varids0 { (reverse $1, reverse $3) }
705 varids0 :: { [RdrName] }
707 | varids0 tv_name { $2 : $1 }
709 ---------------------------------------------------
712 | akind '->' kind { mkArrowKind $1 $3 }
715 : VARSYM { if $1 == SLIT("*") then
717 else if $1 == SLIT("?") then
719 else panic "ParseInterface: akind"
721 | '(' kind ')' { $2 }
723 --------------------------------------------------------------------------
725 id_info :: { [HsIdInfo RdrName] }
727 | id_info_item id_info { $1 : $2 }
729 id_info_item :: { HsIdInfo RdrName }
730 : '__A' INTEGER { HsArity (exactArity (fromInteger $2)) }
731 | '__U' inline_prag core_expr { HsUnfold $2 $3 }
732 | '__M' { HsCprInfo }
733 | '__S' { HsStrictness (mkStrictnessInfo $1) }
734 | '__C' { HsNoCafRefs }
735 | '__P' qvar_name { HsWorker $2 }
737 inline_prag :: { InlinePragInfo }
738 : {- empty -} { NoInlinePragInfo }
739 | '[' from_prag phase ']' { IMustNotBeINLINEd $2 $3 }
741 from_prag :: { Bool }
742 : {- empty -} { True }
745 phase :: { Maybe Int }
746 : {- empty -} { Nothing }
747 | INTEGER { Just (fromInteger $1) }
749 -------------------------------------------------------
750 core_expr :: { UfExpr RdrName }
751 core_expr : '\\' core_bndrs '->' core_expr { foldr UfLam $4 $2 }
752 | 'case' core_expr 'of' var_name
753 '{' core_alts '}' { UfCase $2 $4 $6 }
755 | 'let' '{' core_val_bndr '=' core_expr
756 '}' 'in' core_expr { UfLet (UfNonRec $3 $5) $8 }
757 | '__letrec' '{' rec_binds '}'
758 'in' core_expr { UfLet (UfRec $3) $6 }
760 | '__litlit' STRING atype { UfLitLit $2 $3 }
764 fexpr :: { UfExpr RdrName }
765 fexpr : fexpr core_arg { UfApp $1 $2 }
766 | scc core_aexpr { UfNote (UfSCC $1) $2 }
767 | '__inline_me' core_aexpr { UfNote UfInlineMe $2 }
768 | '__inline_call' core_aexpr { UfNote UfInlineCall $2 }
769 | '__coerce' atype core_aexpr { UfNote (UfCoerce $2) $3 }
772 core_arg :: { UfExpr RdrName }
773 : '@' atype { UfType $2 }
776 core_args :: { [UfExpr RdrName] }
778 | core_arg core_args { $1 : $2 }
780 core_aexpr :: { UfExpr RdrName } -- Atomic expressions
781 core_aexpr : qvar_name { UfVar $1 }
782 | qdata_name { UfVar $1 }
784 | core_lit { UfLit $1 }
785 | '(' core_expr ')' { $2 }
787 | '(' ')' { UfTuple (mkHsTupCon dataName Boxed []) [] }
788 | '(' comma_exprs2 ')' { UfTuple (mkHsTupCon dataName Boxed $2) $2 }
789 | '(#' comma_exprs0 '#)' { UfTuple (mkHsTupCon dataName Unboxed $2) $2 }
791 | '{' '__ccall' ccall_string type '}'
793 (is_dyn, is_casm, may_gc) = $2
795 target | is_dyn = DynamicTarget (error "CCall dyn target bogus unique")
796 | otherwise = StaticTarget $3
798 ccall = CCall target is_casm may_gc cCallConv
804 comma_exprs0 :: { [UfExpr RdrName] } -- Zero or more
805 comma_exprs0 : {- empty -} { [ ] }
806 | core_expr { [ $1 ] }
807 | comma_exprs2 { $1 }
809 comma_exprs2 :: { [UfExpr RdrName] } -- Two or more
810 comma_exprs2 : core_expr ',' core_expr { [$1,$3] }
811 | core_expr ',' comma_exprs2 { $1 : $3 }
813 rec_binds :: { [(UfBinder RdrName, UfExpr RdrName)] }
815 | core_val_bndr '=' core_expr ';' rec_binds { ($1,$3) : $5 }
817 core_alts :: { [UfAlt RdrName] }
819 | core_alt ';' core_alts { $1 : $3 }
821 core_alt :: { UfAlt RdrName }
822 core_alt : core_pat '->' core_expr { (fst $1, snd $1, $3) }
824 core_pat :: { (UfConAlt RdrName, [RdrName]) }
825 core_pat : core_lit { (UfLitAlt $1, []) }
826 | '__litlit' STRING atype { (UfLitLitAlt $2 $3, []) }
827 | qdata_name core_pat_names { (UfDataAlt $1, $2) }
828 | '(' ')' { (UfTupleAlt (mkHsTupCon dataName Boxed []), []) }
829 | '(' comma_var_names1 ')' { (UfTupleAlt (mkHsTupCon dataName Boxed $2), $2) }
830 | '(#' comma_var_names1 '#)' { (UfTupleAlt (mkHsTupCon dataName Unboxed $2), $2) }
831 | '__DEFAULT' { (UfDefault, []) }
832 | '(' core_pat ')' { $2 }
834 core_pat_names :: { [RdrName] }
835 core_pat_names : { [] }
836 | core_pat_name core_pat_names { $1 : $2 }
838 -- Tyvar names and variable names live in different name spaces
839 -- so they need to be signalled separately. But we don't record
840 -- types or kinds in a pattern; we work that out from the type
841 -- of the case scrutinee
842 core_pat_name :: { RdrName }
843 core_pat_name : var_name { $1 }
846 comma_var_names1 :: { [RdrName] } -- One or more
847 comma_var_names1 : var_name { [$1] }
848 | var_name ',' comma_var_names1 { $1 : $3 }
850 core_lit :: { Literal }
851 core_lit : integer { mkMachInt $1 }
852 | CHAR { MachChar $1 }
853 | STRING { MachStr $1 }
854 | rational { MachDouble $1 }
855 | '__word' integer { mkMachWord $2 }
856 | '__word64' integer { mkMachWord64 $2 }
857 | '__int64' integer { mkMachInt64 $2 }
858 | '__float' rational { MachFloat $2 }
859 | '__addr' integer { MachAddr $2 }
861 integer :: { Integer }
863 | '-' INTEGER { (-$2) }
865 rational :: { Rational }
867 | '-' RATIONAL { (-$2) }
869 core_bndr :: { UfBinder RdrName }
870 core_bndr : core_val_bndr { $1 }
871 | core_tv_bndr { $1 }
873 core_bndrs :: { [UfBinder RdrName] }
875 | core_bndr core_bndrs { $1 : $2 }
877 core_val_bndr :: { UfBinder RdrName }
878 core_val_bndr : var_name '::' atype { UfValBinder $1 $3 }
880 core_tv_bndr :: { UfBinder RdrName }
881 core_tv_bndr : '@' tv_name '::' akind { UfTyBinder $2 $4 }
882 | '@' tv_name { UfTyBinder $2 boxedTypeKind }
884 ccall_string :: { FAST_STRING }
890 ------------------------------------------------------------------------
891 scc :: { CostCentre }
892 : '__sccC' '{' mod_name '}' { AllCafsCC $3 }
893 | '__scc' '{' cc_name mod_name cc_dup cc_caf '}'
894 { NormalCC { cc_name = $3, cc_mod = $4,
895 cc_is_dupd = $5, cc_is_caf = $6 } }
897 cc_name :: { EncodedFS }
901 cc_dup :: { IsDupdCC }
902 cc_dup : { OriginalCC }
905 cc_caf :: { IsCafCC }
909 -------------------------------------------------------------------
911 src_loc :: { SrcLoc }
912 src_loc : {% getSrcLocP }
914 -- Check the project version: this makes sure
915 -- that the project version (e.g. 407) in the interface
916 -- file is the same as that for the compiler that's reading it
917 checkVersion :: { () }
918 : {-empty-} {% checkVersion Nothing }
919 | INTEGER {% checkVersion (Just (fromInteger $1)) }
921 -------------------------------------------------------------------
926 happyError buf PState{ loc = loc } = PFailed (ifaceParseErr buf loc)
928 data IfaceStuff = PIface ParsedIface
929 | PIdInfo [HsIdInfo RdrName]
930 | PType RdrNameHsType
931 | PRules [RdrNameRuleDecl]
932 | PDeprecs [RdrNameDeprecation]
934 mk_con_decl name (ex_tvs, ex_ctxt) details loc = mkConDecl name ex_tvs ex_ctxt details loc