{
-#include "HsVersions.h"
-
-module ParseIface (
- parseIface,
-
- ParsedIface(..), RdrIfaceDecl(..),
-
- ExportsMap(..), LocalDefsMap(..), LocalPragmasMap(..),
- LocalVersionsMap(..), PragmaStuff(..)
-
- ) where
+module ParseIface ( parseIface, IfaceStuff(..) ) where
-import Ubiq{-uitous-}
+#include "HsVersions.h"
-import HsSyn ( ClassDecl, InstDecl, TyDecl, PolyType, InPat, Fake )
-import RdrHsSyn ( RdrNameTyDecl(..), RdrNameClassDecl(..),
- RdrNamePolyType(..), RdrNameInstDecl(..)
+import HsSyn -- quite a bit of stuff
+import RdrHsSyn -- oodles of synonyms
+import HsTypes ( mkHsForAllTy )
+import HsCore
+import Const ( Literal(..), mkMachInt_safe )
+import BasicTypes ( Fixity(..), FixityDirection(..),
+ NewOrData(..), Version
+ )
+import CostCentre ( CostCentre(..), IsCafCC(..), IsDupdCC(..) )
+import HsPragmas ( noDataPragmas, noClassPragmas )
+import Type ( Kind, mkArrowKind, boxedTypeKind, openTypeKind, UsageAnn(..) )
+import IdInfo ( ArityInfo, exactArity, CprInfo(..) )
+import Lex
+
+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 RdrName ( RdrName, mkRdrUnqual, mkSysQual, mkSysUnqual )
+import Name ( OccName, Provenance )
+import OccName ( mkSysOccFS,
+ tcName, varName, dataName, clsName, tvName,
+ EncodedFS
)
-import FiniteMap ( emptyFM, listToFM, fmToList, lookupFM, keysFM, FiniteMap )
-import Name ( ExportFlag(..) )
-import Util ( startsWith )
------------------------------------------------------------------
-
-parseIface = parseIToks . lexIface
-
-type LocalVersionsMap = FiniteMap FAST_STRING Version
-type ExportsMap = FiniteMap FAST_STRING (RdrName, ExportFlag)
-type LocalDefsMap = FiniteMap FAST_STRING RdrIfaceDecl
-type LocalPragmasMap = FiniteMap FAST_STRING PragmaStuff
-
-type PragmaStuff = String
-
-data ParsedIface
- = ParsedIface
- Module -- Module name
- Version -- Module version number
- (Maybe Version) -- Source version number
- LocalVersionsMap -- Local version numbers
- ExportsMap -- Exported names
- [Module] -- Special instance modules
- LocalDefsMap -- Local names defined
- [RdrIfaceDecl] -- Local instance declarations
- LocalPragmasMap -- Pragmas for local names
-
-{-
-instance Text ParsedIface where
- showsPrec _ (ParsedIface m v mv lcm exm ims ldm lids ldp)
- = showString "interface "
- . showString (_UNPK_ m)
- . showChar ' '
- . showInt v
- . showString "\n__versions__\n"
- . showList (fmToList lcm)
- . showString "\n__exports__\n"
- . showList (fmToList exm)
- . showString "\n__instance_modules__\n"
- . showList (map _UNPK_ ims)
- . showString "\n__declarations__\n"
- . showList (map _UNPK_ (keysFM ldm))
- . showString "\n__instances__\n"
- . showList lids
- . showString "\n__pragmas__\n"
- . showList (map _UNPK_ (keysFM ldp))
--}
-
------------------------------------------------------------------
-
-data RdrIfaceDecl
- = TypeSig RdrName Bool SrcLoc RdrNameTyDecl
- | NewTypeSig RdrName RdrName Bool SrcLoc RdrNameTyDecl
- | DataSig RdrName [RdrName] Bool SrcLoc RdrNameTyDecl
- | ClassSig RdrName [RdrName] Bool SrcLoc RdrNameClassDecl
- | ValSig RdrName Bool SrcLoc RdrNamePolyType
- | InstSig RdrName RdrName Bool SrcLoc RdrNameInstDecl
- -- True => Source Iface decl
------------
-type Version = Int
-
------------------------------------------------------------------
+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 parseIToks
-%tokentype { IfaceToken }
+%name parseIface
+%tokentype { Token }
+%monad { P }{ thenP }{ returnP }
+%lexer { lexer } { ITeof }
%token
- interface { ITinterface }
- versions_part { ITversions }
- exports_part { ITexports }
- instance_modules_part { ITinstance_modules }
- instances_part { ITinstances }
- declarations_part { ITdeclarations }
- pragmas_part { ITpragmas }
- data { ITdata }
- type { ITtype }
- newtype { ITnewtype }
- class { ITclass }
- where { ITwhere }
- instance { ITinstance }
- bar { ITbar }
- colons { ITcolons }
- comma { ITcomma }
- dblrarrow { ITdblrarrow }
- dot { ITdot }
- dotdot { ITdotdot }
- equal { ITequal }
- lbrace { ITlbrace }
- lbrack { ITlbrack }
- lparen { ITlparen }
- rarrow { ITrarrow }
- rbrace { ITrbrace }
- rbrack { ITrbrack }
- rparen { ITrparen }
- semicolon { ITsemicolon }
- num { ITnum $$ }
- name { ITname $$ }
+ '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 }
+
+ 'forall' { ITforall } -- GHC extension keywords
+ 'foreign' { ITforeign }
+ 'export' { ITexport }
+ 'label' { ITlabel }
+ 'dynamic' { ITdynamic }
+ 'unsafe' { ITunsafe }
+
+ '__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 $$ }
+ '__scc' { ITscc }
+ '__sccC' { ITsccAllCafs }
+
+ '__o' { ITonce }
+ '__m' { ITmany }
+
+ '__A' { ITarity }
+ '__P' { ITspecialise }
+ '__C' { ITnocaf }
+ '__U' { ITunfold $$ }
+ '__S' { ITstrict $$ }
+ '__R' { ITrules }
+ '__M' { ITcprinfo $$ }
+
+ '..' { 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 $$ }
+ QCONSYM { ITqconsym $$ }
+
+ PRAGMA { ITpragma $$ }
+
+ CHAR { ITchar $$ }
+ STRING { ITstring $$ }
+ INTEGER { ITinteger $$ }
+ RATIONAL { ITrational $$ }
+ CLITLIT { ITlitlit $$ }
+
+ UNKNOWN { ITunknown $$ }
%%
-Iface :: { ParsedIface }
-Iface : interface name num
- VersionsPart ExportsPart InstanceModulesPart
- DeclsPart InstancesPart PragmasPart
- { ParsedIface $2 (fromInteger $3) Nothing{-src version-}
- $4 -- local versions
- $5 -- exports map
- $6 -- instance modules
- $7 -- decls map
- $8 -- local instances
- $9 -- pragmas map
- }
-
-VersionsPart :: { LocalVersionsMap }
-VersionsPart : versions_part NameVersionPairs
- { listToFM $2 }
-
-NameVersionPairs :: { [(FAST_STRING, Int)] }
-NameVersionPairs : NameVersionPairs name lparen num rparen
- { ($2, fromInteger $4) : $1 }
- | { [] }
-
-ExportsPart :: { ExportsMap }
-ExportsPart : exports_part ExportItems
- { listToFM $2 }
-
-ExportItems :: { [(FAST_STRING, (RdrName, ExportFlag))] }
-ExportItems : ExportItems name dot name MaybeDotDot
- { ($4, (Qual $2 $4, $5)) : $1 }
- | { [] }
-
-MaybeDotDot :: { ExportFlag }
-MaybeDotDot : dotdot { ExportAll }
- | { ExportAbs }
-
-InstanceModulesPart :: { [Module] }
-InstanceModulesPart : instance_modules_part ModList
- { $2 }
-
-ModList :: { [Module] }
-ModList : ModList name { $2 : $1 }
- | { [] }
-
-DeclsPart :: { LocalDefsMap }
-DeclsPart : declarations_part
- { emptyFM }
-
-InstancesPart :: { [RdrIfaceDecl] }
-InstancesPart : instances_part
- { [] }
-
-PragmasPart :: { LocalPragmasMap }
-PragmasPart : pragmas_part
- { emptyFM }
+-- 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 }
+
+
+iface :: { (ModuleName, ParsedIface) }
+iface : '__interface' mod_fs INTEGER orphans checkVersion 'where'
+ exports_part
+ import_part
+ instance_decl_part
+ decls_part
+ rules_part
+ { ( $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 = $11 -- Rules
+ } ) }
+
+--------------------------------------------------------------------------
+
+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 : var_occ INTEGER { ($1, fromInteger $2) }
+ | tc_occ INTEGER { ($1, fromInteger $2) }
+
+
+--------------------------------------------------------------------------
+
+exports_part :: { [ExportItem] }
+exports_part : { [] }
+ | exports_part '__export'
+ mod_fs entities ';' { (mkSysModuleFS $3, $4) : $1 }
+
+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) }
+ | tc_occ '|' stuff_inside { AvailTC $1 $3 }
+
+stuff_inside :: { [OccName] }
+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 }
+
+
+--------------------------------------------------------------------------
+
+fixity :: { FixityDirection }
+fixity : 'infixl' { InfixL }
+ | 'infixr' { InfixR }
+ | 'infix' { InfixN }
+
+mb_fix :: { Int }
+mb_fix : {-nothing-} { 9 }
+ | INTEGER { (fromInteger $1) }
+
+-----------------------------------------------------------------------------
+
+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 }
+
+--------------------------------------------------------------------------
+
+instance_decl_part :: { [RdrNameInstDecl] }
+instance_decl_part : {- empty -} { [] }
+ | instance_decl_part inst_decl { $2 : $1 }
+
+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 csigs
+ { TyClD (mkClassDecl $3 $4 $5 $6 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 -} { \_ -> [] }
+ | src_loc PRAGMA { \x ->
+ case parseIface $2
+ PState{bol = 0#, atbol = 1#,
+ context = [],
+ glasgow_exts = 1#,
+ loc = $1 } of
+ POk _ (PIdInfo id_info) -> id_info
+ PFailed err ->
+ pprPanic "IdInfo parse failed"
+ (vcat [ppr x, err])
+ }
+
+-----------------------------------------------------------------------------
+
+rules_part :: { [RdrNameRuleDecl] }
+rules_part : {- empty -} { [] }
+ | src_loc PRAGMA { case parseIface $2
+ PState{bol = 0#, atbol = 1#,
+ context = [],
+ glasgow_exts = 1#,
+ loc = $1 } of
+ POk _ (PRules rules) -> rules
+ PFailed err ->
+ pprPanic "Rules 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 }
+
+-----------------------------------------------------------------------------
+
+version :: { Version }
+version : INTEGER { fromInteger $1 }
+
+decl_context :: { RdrNameContext }
+decl_context : { [] }
+ | '{' context_list1 '}' '=>' { $2 }
+
+----------------------------------------------------------------------------
+
+constrs :: { [RdrNameConDecl] {- empty for handwritten abstract -} }
+ : { [] }
+ | '=' constrs1 { $2 }
+
+constrs1 :: { [RdrNameConDecl] }
+constrs1 : constr { [$1] }
+ | constr '|' constrs1 { $1 : $3 }
+
+constr :: { RdrNameConDecl }
+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 : { [] }
+ | 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] }
+
+ex_stuff :: { ([HsTyVar RdrName], RdrNameContext) }
+ex_stuff : { ([],[]) }
+ | '__forall' forall context '=>' { ($2,$3) }
+
+batypes :: { [RdrNameBangType] }
+batypes : { [] }
+ | batype batypes { $1 : $2 }
+
+batype :: { RdrNameBangType }
+batype : atype { Unbanged $1 }
+ | '!' atype { Banged $2 }
+ | '!' '!' atype { Unpacked $3 }
+
+fields1 :: { [([RdrName], RdrNameBangType)] }
+fields1 : field { [$1] }
+ | field ',' fields1 { $1 : $3 }
+
+field :: { ([RdrName], RdrNameBangType) }
+field : var_names1 '::' type { ($1, Unbanged $3) }
+ | var_names1 '::' '!' type { ($1, Banged $4) }
+ | var_names1 '::' '!' '!' type { ($1, Unpacked $5) }
+--------------------------------------------------------------------------
+
+type :: { RdrNameHsType }
+type : '__forall' forall context '=>' type
+ { mkHsForAllTy $2 $3 $5 }
+ | btype '->' type { MonoFunTy $1 $3 }
+ | btype { $1 }
+
+forall :: { [HsTyVar RdrName] }
+forall : '[' tv_bndrs ']' { $2 }
+
+context :: { RdrNameContext }
+context : { [] }
+ | '{' context_list1 '}' { $2 }
+
+context_list1 :: { RdrNameContext }
+context_list1 : class { [$1] }
+ | class ',' context_list1 { $1 : $3 }
+
+class :: { (RdrName, [RdrNameHsType]) }
+class : qcls_name atypes { ($1, $2) }
+
+types2 :: { [RdrNameHsType] {- Two or more -} }
+types2 : type ',' type { [$1,$3] }
+ | type ',' types2 { $1 : $3 }
+
+btype :: { RdrNameHsType }
+btype : atype { $1 }
+ | btype atype { MonoTyApp $1 $2 }
+ | '__o' atype { MonoUsgTy UsOnce $2 }
+ | '__m' atype { MonoUsgTy UsMany $2 }
+
+atype :: { RdrNameHsType }
+atype : qtc_name { MonoTyVar $1 }
+ | tv_name { MonoTyVar $1 }
+ | '(' types2 ')' { MonoTupleTy $2 True{-boxed-} }
+ | '(#' type '#)' { MonoTupleTy [$2] False{-unboxed-} }
+ | '(#' types2 '#)' { MonoTupleTy $2 False{-unboxed-} }
+ | '[' type ']' { MonoListTy $2 }
+ | '{' qcls_name atypes '}' { MonoDictTy $2 $3 }
+ | '(' type ')' { $2 }
+
+-- This one is dealt with via qtc_name
+-- | '(' ')' { MonoTupleTy [] True }
+
+atypes :: { [RdrNameHsType] {- Zero or more -} }
+atypes : { [] }
+ | atype atypes { $1 : $2 }
+---------------------------------------------------------------------
+mod_fs :: { EncodedFS }
+ : CONID { $1 }
+
+mod_name :: { ModuleName }
+ : mod_fs { mkSysModuleFS $1 }
+
+
+---------------------------------------------------
+var_fs :: { EncodedFS }
+ : VARID { $1 }
+ | VARSYM { $1 }
+ | '!' { SLIT("!") }
+ | 'forall' { SLIT("forall") }
+ | 'foreign' { SLIT("foreign") }
+ | 'export' { SLIT("export") }
+ | 'label' { SLIT("label") }
+ | 'dynamic' { SLIT("dynamic") }
+ | 'unsafe' { SLIT("unsafe") }
+
+qvar_fs :: { (EncodedFS, EncodedFS) }
+ : QVARID { $1 }
+ | QVARSYM { $1 }
+
+var_occ :: { OccName }
+ : var_fs { mkSysOccFS varName $1 }
+
+var_name :: { RdrName }
+var_name : var_occ { mkRdrUnqual $1 }
+
+qvar_name :: { RdrName }
+qvar_name : var_name { $1 }
+ | qvar_fs { mkSysQual varName $1 }
+
+var_names :: { [RdrName] }
+var_names : { [] }
+ | var_name var_names { $1 : $2 }
+
+var_names1 :: { [RdrName] }
+var_names1 : var_name var_names { $1 : $2 }
+
+---------------------------------------------------
+-- For some bizarre reason,
+-- (,,,) is dealt with by the parser
+-- Foo.(,,,) is dealt with by the lexer
+-- Sigh
+
+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_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_fs :: { EncodedFS }
+ : data_fs { $1 }
+
+tc_occ :: { OccName }
+ : tc_fs { mkSysOccFS tcName $1 }
+
+tc_name :: { RdrName }
+ : tc_occ { mkRdrUnqual $1 }
+
+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 }
+
+---------------------------------------------------
+tv_name :: { RdrName }
+ : VARID { mkSysUnqual tvName $1 }
+ | VARSYM { mkSysUnqual tvName $1 {- Allow t2 as a tyvar -} }
+
+tv_bndr :: { HsTyVar RdrName }
+ : tv_name '::' akind { IfaceTyVar $1 $3 }
+ | tv_name { IfaceTyVar $1 boxedTypeKind }
+
+tv_bndrs :: { [HsTyVar RdrName] }
+ : { [] }
+ | tv_bndr tv_bndrs { $1 : $2 }
+
+---------------------------------------------------
+kind :: { Kind }
+ : akind { $1 }
+ | akind '->' kind { mkArrowKind $1 $3 }
+
+akind :: { Kind }
+ : VARSYM { if $1 == SLIT("*") then
+ boxedTypeKind
+ else if $1 == SLIT("?") then
+ openTypeKind
+ else panic "ParseInterface: akind"
+ }
+ | '(' kind ')' { $2 }
+
+--------------------------------------------------------------------------
+
+id_info :: { [HsIdInfo RdrName] }
+ : { [] }
+ | id_info_item id_info { $1 : $2 }
+ | strict_info id_info { $1 ++ $2 }
+
+id_info_item :: { HsIdInfo RdrName }
+ : '__A' arity_info { HsArity $2 }
+ | '__U' core_expr { HsUnfold $1 (Just $2) }
+ | '__U' { HsUnfold $1 Nothing }
+ | '__C' { HsNoCafRefs }
+
+strict_info :: { [HsIdInfo RdrName] }
+ : cpr worker { ($1:$2) }
+ | strict worker { ($1:$2) }
+ | cpr strict worker { ($1:$2:$3) }
+
+cpr :: { HsIdInfo RdrName }
+ : '__M' { HsCprInfo $1 }
+
+strict :: { HsIdInfo RdrName }
+ : '__S' { HsStrictness (HsStrictnessInfo $1) }
+
+worker :: { [HsIdInfo RdrName] }
+ : qvar_name { [HsWorker $1] }
+ | {- nothing -} { [] }
+
+arity_info :: { ArityInfo }
+ : INTEGER { exactArity (fromInteger $1) }
+
+-------------------------------------------------------
+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 }
+ | '(#' core_expr '#)' { UfTuple (mkUbxTupConRdrName 1) [$2] }
+ | '(#' comma_exprs2 '#)' { UfTuple (mkUbxTupConRdrName (length $2)) $2 }
+
+-- This one is dealt with by qdata_name: see above comments
+-- | '(' ')' { UfTuple (mkTupConRdrName 0) [] }
+
+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 var_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 }
+
+
+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 }
+ | VARID { $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 :: Int -> [IfaceToken] -> a
-happyError i _ = error ("Parse error in line " ++ show i ++ "\n")
-
------------------------------------------------------------------
-data IfaceToken
- = ITinterface -- keywords
- | ITversions
- | ITexports
- | ITinstance_modules
- | ITinstances
- | ITdeclarations
- | ITpragmas
- | ITdata
- | ITtype
- | ITnewtype
- | ITclass
- | ITwhere
- | ITinstance
- | ITbar -- magic symbols
- | ITcolons
- | ITcomma
- | ITdblrarrow
- | ITdot
- | ITdotdot
- | ITequal
- | ITlbrace
- | ITlbrack
- | ITlparen
- | ITrarrow
- | ITrbrace
- | ITrbrack
- | ITrparen
- | ITsemicolon
- | ITnum Integer -- numbers and names
- | ITname FAST_STRING
-
------------------------------------------------------------------
-lexIface :: String -> [IfaceToken]
-
-lexIface str
- = case str of
- [] -> []
-
- -- whitespace and comments
- ' ' : cs -> lexIface cs
- '\t' : cs -> lexIface cs
- '\n' : cs -> lexIface cs
- '-' : '-' : cs -> lex_comment cs
- '{' : '-' : cs -> lex_nested_comment 1{-one seen-} cs
-
- '(' : '.' : '.' : ')' : cs -> ITdotdot : lexIface cs
- '(' : cs -> ITlparen : lexIface cs
- ')' : cs -> ITrparen : lexIface cs
- '[' : cs -> ITlbrack : lexIface cs
- ']' : cs -> ITrbrack : lexIface cs
- '{' : cs -> ITlbrace : lexIface cs
- '}' : cs -> ITrbrace : lexIface cs
- '-' : '>' : cs -> ITrarrow : lexIface cs
- '.' : cs -> ITdot : lexIface cs
- '|' : cs -> ITbar : lexIface cs
- ':' : ':' : cs -> ITcolons : lexIface cs
- '=' : '>' : cs -> ITdblrarrow : lexIface cs
- '=' : cs -> ITequal : lexIface cs
- ',' : cs -> ITcomma : lexIface cs
- ';' : cs -> ITsemicolon : lexIface cs
-
- '_' : cs -> lex_word str
- c : cs | isDigit c -> lex_num str
- | isAlpha c -> lex_word str
-
- other -> error ("lexing:"++other)
- where
- lex_comment str
- = case (span ((/=) '\n') str) of { (junk, rest) ->
- lexIface rest }
-
- lex_nested_comment lvl [] = error "EOF in nested comment in interface"
- lex_nested_comment lvl str
- = case str of
- '{' : '-' : xs -> lex_nested_comment (lvl+1) xs
- '-' : '}' : xs -> if lvl == 1
- then lexIface xs
- else lex_nested_comment (lvl-1) xs
- _ : xs -> lex_nested_comment lvl xs
-
- lex_num str
- = case (span isDigit str) of { (num, rest) ->
- ITnum (read num) : lexIface rest }
-
- lex_word str
- = case (span is_word_sym str) of { (word, rest) ->
- case (lookupFM keywordsFM word) of {
- Nothing -> ITname (_PK_ word) : lexIface rest ;
- Just xx -> xx : lexIface rest
- }}
- where
- is_word_sym '_' = True
- is_word_sym c = isAlphanum c
-
- keywordsFM :: FiniteMap String IfaceToken
- keywordsFM = listToFM [
- ("interface", ITinterface)
-
- ,("__versions__", ITversions)
- ,("__exports__", ITexports)
- ,("__instance_modules__", ITinstance_modules)
- ,("__instances__", ITinstances)
- ,("__declarations__", ITdeclarations)
- ,("__pragmas__", ITpragmas)
-
- ,("data", ITdata)
- ,("class", ITclass)
- ,("where", ITwhere)
- ,("instance", ITinstance)
- ]
+happyError :: P a
+happyError buf PState{ loc = loc } = PFailed (ifaceParseErr buf loc)
+
+data IfaceStuff = PIface EncodedFS{-.hi module name-} ParsedIface
+ | PIdInfo [HsIdInfo RdrName]
+ | PType RdrNameHsType
+ | PRules [RdrNameRuleDecl]
+
+mkConDecl name (ex_tvs, ex_ctxt) details loc = ConDecl name ex_tvs ex_ctxt details loc
}
projects / ghc-hetmet.git / blobdiff