{
-#include "HsVersions.h"
-
-module ParseIface ( parseIface ) where
-
-IMP_Ubiq(){-uitous-}
+module ParseIface ( parseIface, IfaceStuff(..) ) where
-import ParseUtils
+#include "HsVersions.h"
import HsSyn -- quite a bit of stuff
import RdrHsSyn -- oodles of synonyms
-import HsPragmas ( noGenPragmas )
-
+import HsDecls ( HsIdInfo(..), HsStrictnessInfo(..) )
+import HsTypes ( mkHsForAllTy )
+import HsCore
+import Const ( Literal(..), mkMachInt_safe )
+import BasicTypes ( IfaceFlavour(..), Fixity(..), FixityDirection(..),
+ NewOrData(..), Version
+ )
+import HsPragmas ( noDataPragmas, noClassPragmas )
+import Type ( Kind, mkArrowKind, boxedTypeKind, openTypeKind )
+import IdInfo ( ArityInfo, exactArity )
+import Lex
+
+import RnMonad ( ImportVersion, LocalVersion, ParsedIface(..), WhatsImported(..),
+ RdrNamePragma, ExportItem, RdrAvailInfo, GenAvailInfo(..)
+ )
import Bag ( emptyBag, unitBag, snocBag )
-import FiniteMap ( emptyFM, unitFM, addToFM, plusFM, bagToFM )
-import Name ( ExportFlag(..), mkTupNameStr, preludeQual,
- RdrName(..){-instance Outputable:ToDo:rm-}
+import FiniteMap ( emptyFM, unitFM, addToFM, plusFM, bagToFM, FiniteMap )
+import Name ( OccName(..), isTCOcc, Provenance, Module,
+ mkTupNameStr, mkUbxTupNameStr
)
-import Outputable -- ToDo:rm
-import PprStyle ( PprStyle(..) ) -- ToDo: rm debugging
-import SrcLoc ( mkIfaceSrcLoc )
-import Util ( panic, pprPanic{-ToDo:rm-} )
-
------------------------------------------------------------------
-
-parseIface = parseIToks . lexIface
+import SrcLoc ( SrcLoc )
+import Maybes
+import Outputable
------------------------------------------------------------------
+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 }
- BANG { ITbang }
- CBRACK { ITcbrack }
- CCURLY { ITccurly }
- DCCURLY { ITdccurly }
- CLASS { ITclass }
- COMMA { ITcomma }
- CPAREN { ITcparen }
- DARROW { ITdarrow }
- DATA { ITdata }
- DCOLON { ITdcolon }
- DOTDOT { ITdotdot }
- EQUAL { ITequal }
- INFIX { ITinfix }
- INFIXL { ITinfixl }
- INFIXR { ITinfixr }
- INSTANCE { ITinstance }
- NEWTYPE { ITnewtype }
- OBRACK { ITobrack }
- OCURLY { ITocurly }
- DOCURLY { ITdocurly }
- OPAREN { IToparen }
- RARROW { ITrarrow }
- SEMI { ITsemi }
- TYPE { ITtype }
- VBAR { ITvbar }
- WHERE { ITwhere }
- INTEGER { ITinteger $$ }
- VARID { ITvarid $$ }
- CONID { ITconid $$ }
- VARSYM { ITvarsym $$ }
- CONSYM { ITconsym $$ }
- QVARID { ITqvarid $$ }
- QCONID { ITqconid $$ }
- QVARSYM { ITqvarsym $$ }
- QCONSYM { ITqconsym $$ }
+ 'case' { ITcase } -- Haskell keywords
+ 'class' { ITclass }
+ 'data' { ITdata }
+ 'default' { ITdefault }
+ 'deriving' { ITderiving }
+ 'do' { ITdo }
+ 'else' { ITelse }
+ 'if' { ITif }
+ 'import' { ITimport }
+ 'in' { ITin }
+ 'infix' { ITinfix }
+ 'infixl' { ITinfixl }
+ 'infixr' { ITinfixr }
+ 'instance' { ITinstance }
+ 'let' { ITlet }
+ 'module' { ITmodule }
+ 'newtype' { ITnewtype }
+ 'of' { ITof }
+ 'then' { ITthen }
+ 'type' { ITtype }
+ 'where' { ITwhere }
+ 'as' { ITas }
+ 'qualified' { ITqualified }
+ 'hiding' { IThiding }
+
+ '__interface' { ITinterface } -- GHC-extension keywords
+ '__export' { ITexport }
+ '__instimport' { ITinstimport }
+ '__forall' { ITforall }
+ '__letrec' { ITletrec }
+ '__coerce' { ITcoerce }
+ '__inline' { ITinline }
+ '__DEFAULT' { ITdefaultbranch }
+ '__bot' { ITbottom }
+ '__integer' { ITinteger_lit }
+ '__float' { ITfloat_lit }
+ '__rational' { ITrational_lit }
+ '__addr' { ITaddr_lit }
+ '__litlit' { ITlit_lit }
+ '__string' { ITstring_lit }
+ '__ccall' { ITccall $$ }
+ '__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
- usages_part versions_part
- exports_part inst_modules_part
- fixities_part decls_part instances_part pragmas_part
- { case $9 of { (tm, vm) ->
- ParsedIface $2 (panic "merge modules") (fromInteger $3) Nothing{-src version-}
- $4 -- usages
- $5 -- local versions
- $6 -- exports map
- $7 -- instance modules
- $8 -- fixities map
- tm -- decls maps
- vm
- $10 -- local instances
- $11 -- pragmas map
- }
---------------------------------------------------------------------------
+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
+ (reverse $6) -- Usages
+ (reverse $8) -- Exports
+ (reverse $7) -- Instance import modules
+ (reverse $9) -- Fixities
+ (reverse $11) -- Decls
+ (reverse $10) -- Local instances
}
-usages_part :: { UsagesMap }
-usages_part : USAGES_PART module_stuff_pairs { bagToFM $2 }
- | { emptyFM }
-
-versions_part :: { VersionsMap }
-versions_part : VERSIONS_PART name_version_pairs { bagToFM $2 }
- | { emptyFM }
-
-module_stuff_pairs :: { Bag (Module, (Version, FiniteMap FAST_STRING Version)) }
-module_stuff_pairs : module_stuff_pair
- { unitBag $1 }
- | module_stuff_pairs module_stuff_pair
- { $1 `snocBag` $2 }
-
-module_stuff_pair :: { (Module, (Version, FiniteMap FAST_STRING Version)) }
-module_stuff_pair : CONID INTEGER DCOLON name_version_pairs SEMI
- { ($1, (fromInteger $2, bagToFM $4)) }
-
-name_version_pairs :: { Bag (FAST_STRING, Int) }
-name_version_pairs : name_version_pair
- { unitBag $1 }
- | name_version_pairs name_version_pair
- { $1 `snocBag` $2 }
-
-name_version_pair :: { (FAST_STRING, Int) }
-name_version_pair : name INTEGER
- { ($1, fromInteger $2)
--------------------------------------------------------------------------
- }
-exports_part :: { ExportsMap }
-exports_part : EXPORTS_PART export_items { bagToFM $2 }
- | { emptyFM }
+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) }
-export_items :: { Bag (FAST_STRING, (OrigName, ExportFlag)) }
-export_items : export_item { unitBag $1 }
- | export_items export_item { $1 `snocBag` $2 }
+whats_imported :: { WhatsImported OccName }
+whats_imported : { Everything }
+ | name_version_pair name_version_pairs { Specifically ($1:$2) }
-export_item :: { (FAST_STRING, (OrigName, ExportFlag)) }
-export_item : CONID name maybe_dotdot { ($2, (OrigName $1 $2, $3)) }
+name_version_pairs :: { [LocalVersion OccName] }
+name_version_pairs : { [] }
+ | name_version_pair name_version_pairs { $1 : $2 }
-maybe_dotdot :: { ExportFlag }
-maybe_dotdot : DOTDOT { ExportAll }
- | { ExportAbs
---------------------------------------------------------------------------
- }
+name_version_pair :: { LocalVersion OccName }
+name_version_pair : entity_occ INTEGER { ($1, fromInteger $2) }
-inst_modules_part :: { Bag Module }
-inst_modules_part : INSTANCE_MODULES_PART mod_list { $2 }
- | { emptyBag }
+instance_import_part :: { [Module] }
+instance_import_part : { [] }
+ | instance_import_part '__instimport' mod_name ';'
+ { $3 : $1 }
-mod_list :: { Bag Module }
-mod_list : CONID { unitBag $1 }
- | mod_list CONID { $1 `snocBag` $2
--------------------------------------------------------------------------
- }
-fixities_part :: { FixitiesMap }
-fixities_part : FIXITIES_PART fixes { $2 }
- | { emptyFM }
+exports_part :: { [ExportItem] }
+exports_part : { [] }
+ | exports_part '__export' opt_bang mod_name entities ';'
+ { ($4,$3,$5) : $1 }
-fixes :: { FixitiesMap }
-fixes : fix { case $1 of (k,v) -> unitFM k v }
- | fixes fix { case $2 of (k,v) -> addToFM $1 k v }
+opt_bang :: { IfaceFlavour }
+opt_bang : { HiFile }
+ | '!' { HiBootFile }
-fix :: { (FAST_STRING, RdrNameFixityDecl) }
-fix : INFIXL INTEGER qname SEMI { (de_qual $3, InfixL $3 (fromInteger $2)) }
- | INFIXR INTEGER qname SEMI { (de_qual $3, InfixR $3 (fromInteger $2)) }
- | INFIX INTEGER qname SEMI { (de_qual $3, InfixN $3 (fromInteger $2))
---------------------------------------------------------------------------
- }
-
-decls_part :: { (LocalTyDefsMap, LocalValDefsMap) }
-decls_part : DECLARATIONS_PART topdecls { $2 }
- | { (emptyFM, emptyFM) }
-
-topdecls :: { (LocalTyDefsMap, LocalValDefsMap) }
-topdecls : topdecl { $1 }
- | topdecls topdecl { case $1 of { (ts1, vs1) ->
- case $2 of { (ts2, vs2) ->
- (plusFM ts1 ts2, plusFM vs1 vs2)}}
- }
-
-topdecl :: { (LocalTyDefsMap, LocalValDefsMap) }
-topdecl : typed SEMI { ($1, emptyFM) }
- | datad SEMI { $1 }
- | newtd SEMI { $1 }
- | classd SEMI { $1 }
- | decl { case $1 of { (n, Sig qn ty _ loc) ->
- (emptyFM, unitFM n (ValSig qn loc ty)) }
- }
+entities :: { [RdrAvailInfo] }
+entities : { [] }
+ | entity entities { $1 : $2 }
-typed :: { LocalTyDefsMap }
-typed : TYPE simple EQUAL type { mk_type $2 $4 }
+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 }
-datad :: { (LocalTyDefsMap, LocalValDefsMap) }
-datad : DATA simple EQUAL constrs { mk_data [] $2 $4 }
- | DATA context DARROW simple EQUAL constrs { mk_data $2 $4 $6 }
+stuff_inside :: { [OccName] }
+stuff_inside : '{' val_occs '}' { $2 }
-newtd :: { (LocalTyDefsMap, LocalValDefsMap) }
-newtd : NEWTYPE simple EQUAL constr1 { mk_new [] $2 $4 }
- | NEWTYPE context DARROW simple EQUAL constr1 { mk_new $2 $4 $6 }
+--------------------------------------------------------------------------
-classd :: { (LocalTyDefsMap, LocalValDefsMap) }
-classd : CLASS class cbody { mk_class [] $2 $3 }
- | CLASS context DARROW class cbody { mk_class $2 $4 $5 }
+fixities_part :: { [(OccName,Fixity)] }
+fixities_part : { [] }
+ | fixities_part fixity_decl ';' { $2 : $1 }
-cbody :: { [(FAST_STRING, RdrNameSig)] }
-cbody : WHERE OCURLY decls CCURLY { $3 }
- | { [] }
+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) }
-decls :: { [(FAST_STRING, RdrNameSig)] }
-decls : decl { [$1] }
- | decls decl { $1 ++ [$2] }
+mb_fix :: { Int }
+mb_fix : {-nothing-} { 9 }
+ | INTEGER { (fromInteger $1) }
-decl :: { (FAST_STRING, RdrNameSig) }
-decl : var DCOLON ctype SEMI { (de_qual $1, Sig $1 $3 noGenPragmas mkIfaceSrcLoc) }
+-----------------------------------------------------------------------------
-context :: { RdrNameContext }
-context : DOCURLY context_list DCCURLY { reverse $2 }
-
-context_list :: { RdrNameContext{-reversed-} }
-context_list : class { [$1] }
- | context_list COMMA class { $3 : $1 }
-
-class :: { (RdrName, RdrName) }
-class : gtycon VARID { ($1, Unqual $2) }
-
-ctype :: { RdrNamePolyType }
-ctype : context DARROW type { HsPreForAllTy $1 $3 }
- | type { HsPreForAllTy [] $1 }
-
-type :: { RdrNameMonoType }
-type : btype { $1 }
- | btype RARROW type { MonoFunTy $1 $3 }
-
-types :: { [RdrNameMonoType] }
-types : type { [$1] }
- | types COMMA type { $1 ++ [$3] }
-
-btype :: { RdrNameMonoType }
-btype : gtyconapp { case $1 of (tc, tys) -> MonoTyApp tc tys }
- | ntyconapp { case $1 of { (ty1, tys) ->
- if null tys
- then ty1
- else
- case ty1 of {
- MonoTyVar tv -> MonoTyApp tv tys;
- MonoTyApp tc ts -> MonoTyApp tc (ts++tys);
- MonoFunTy t1 t2 -> MonoTyApp (preludeQual SLIT("->")) (t1:t2:tys);
- MonoListTy ty -> MonoTyApp (preludeQual SLIT("[]")) (ty:tys);
- MonoTupleTy ts -> MonoTyApp (preludeQual (mkTupNameStr (length ts)))
- (ts++tys);
- _ -> pprPanic "test:" (ppr PprDebug $1)
- }}
- }
+csigs :: { [RdrNameSig] }
+csigs : { [] }
+ | 'where' '{' csigs1 '}' { $3 }
-ntyconapp :: { (RdrNameMonoType, [RdrNameMonoType]) }
-ntyconapp : ntycon { ($1, []) }
- | ntyconapp atype { case $1 of (t1,tys) -> (t1, tys ++ [$2]) }
+csigs1 :: { [RdrNameSig] }
+csigs1 : csig { [$1] }
+ | csig ';' csigs1 { $1 : $3 }
-gtyconapp :: { (RdrName, [RdrNameMonoType]) }
-gtyconapp : gtycon { ($1, []) }
- | gtyconapp atype { case $1 of (tc,tys) -> (tc, tys ++ [$2]) }
+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 }
-atype :: { RdrNameMonoType }
-atype : gtycon { MonoTyApp $1 [] }
- | ntycon { $1 }
+--------------------------------------------------------------------------
-atypes :: { [RdrNameMonoType] }
-atypes : atype { [$1] }
- | atypes atype { $1 ++ [$2] }
+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 -}
+ (Just $5) {- Dfun id -}
+ $1
+ }
-ntycon :: { RdrNameMonoType }
-ntycon : VARID { MonoTyVar (Unqual $1) }
- | OPAREN type COMMA types CPAREN { MonoTupleTy ($2 : $4) }
- | OBRACK type CBRACK { MonoListTy $2 }
- | OPAREN type CPAREN { $2 }
+--------------------------------------------------------------------------
-gtycon :: { RdrName }
-gtycon : QCONID { $1 }
- | OPAREN RARROW CPAREN { preludeQual SLIT("->") }
- | OBRACK CBRACK { preludeQual SLIT("[]") }
- | OPAREN CPAREN { preludeQual SLIT("()") }
- | OPAREN commas CPAREN { preludeQual (mkTupNameStr $2) }
+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)
+ }
-commas :: { Int }
-commas : COMMA { 2{-1 comma => arity 2-} }
- | commas COMMA { $1 + 1 }
+-----------------------------------------------------------------------------
-simple :: { (RdrName, [FAST_STRING]) }
-simple : gtycon { ($1, []) }
- | gtyconvars { case $1 of (tc,tvs) -> (tc, reverse tvs) }
+version :: { Version }
+version : INTEGER { fromInteger $1 }
-gtyconvars :: { (RdrName, [FAST_STRING] {-reversed-}) }
-gtyconvars : gtycon VARID { ($1, [$2]) }
- | gtyconvars VARID { case $1 of (tc,tvs) -> (tc, $2 : tvs) }
+decl_context :: { RdrNameContext }
+decl_context : { [] }
+ | '{' context_list1 '}' '=>' { $2 }
-constrs :: { [(RdrName, RdrNameConDecl)] }
-constrs : constr { [$1] }
- | constrs VBAR constr { $1 ++ [$3] }
+----------------------------------------------------------------
-constr :: { (RdrName, RdrNameConDecl) }
-constr : btyconapp
- { case $1 of (con, tys) -> (con, ConDecl con tys mkIfaceSrcLoc) }
- | QCONSYM { ($1, ConDecl $1 [] mkIfaceSrcLoc) }
- | QCONSYM batypes { ($1, ConDecl $1 $2 mkIfaceSrcLoc) }
- | gtycon OCURLY fields CCURLY
- { ($1, RecConDecl $1 $3 mkIfaceSrcLoc) }
+constrs :: { [RdrNameConDecl] {- empty for handwritten abstract -} }
+ : { [] }
+ | '=' constrs1 { $2 }
-btyconapp :: { (RdrName, [RdrNameBangType]) }
-btyconapp : gtycon { ($1, []) }
- | btyconapp batype { case $1 of (tc,tys) -> (tc, tys ++ [$2]) }
+constrs1 :: { [RdrNameConDecl] }
+constrs1 : constr { [$1] }
+ | constr '|' constrs1 { $1 : $3 }
-bbtype :: { RdrNameBangType }
-bbtype : btype { Unbanged (HsPreForAllTy [] $1) }
- | BANG atype { Banged (HsPreForAllTy [] $2) }
+constr :: { RdrNameConDecl }
+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 ()
-batype :: { RdrNameBangType }
-batype : atype { Unbanged (HsPreForAllTy [] $1) }
- | BANG atype { Banged (HsPreForAllTy [] $2) }
+newtype_constr :: { [RdrNameConDecl] {- Empty if handwritten abstract -} }
+newtype_constr : { [] }
+ | src_loc '=' ex_stuff data_name atype { [mkConDecl $4 $3 (NewCon $5) $1] }
+
+ex_stuff :: { ([HsTyVar RdrName], RdrNameContext) }
+ex_stuff : { ([],[]) }
+ | '__forall' forall context '=>' { ($2,$3) }
batypes :: { [RdrNameBangType] }
-batypes : batype { [$1] }
- | batypes batype { $1 ++ [$2] }
+batypes : { [] }
+ | batype batypes { $1 : $2 }
+
+batype :: { RdrNameBangType }
+batype : atype { Unbanged $1 }
+ | '!' atype { Banged $2 }
-fields :: { [([RdrName], RdrNameBangType)] }
-fields : field { [$1] }
- | fields COMMA field { $1 ++ [$3] }
+fields1 :: { [([RdrName], RdrNameBangType)] }
+fields1 : field { [$1] }
+ | field ',' fields1 { $1 : $3 }
field :: { ([RdrName], RdrNameBangType) }
-field : var DCOLON type { ([$1], Unbanged (HsPreForAllTy [] $3)) }
- | var DCOLON BANG atype { ([$1], Banged (HsPreForAllTy [] $4)) }
-
-constr1 :: { (RdrName, RdrNameMonoType) }
-constr1 : gtycon atype { ($1, $2) }
-
-var :: { RdrName }
-var : QVARID { $1 }
- | QVARSYM { $1 }
-
-qname :: { RdrName }
-qname : QVARID { $1 }
- | QCONID { $1 }
- | QVARSYM { $1 }
- | QCONSYM { $1 }
-
-name :: { FAST_STRING }
-name : VARID { $1 }
- | CONID { $1 }
- | VARSYM { $1 }
- | BANG { SLIT("!"){-sigh, double-sigh-} }
- | CONSYM { $1 }
-
-instances_part :: { Bag RdrIfaceInst }
-instances_part : INSTANCES_PART instdecls { $2 }
- | { emptyBag }
-
-instdecls :: { Bag RdrIfaceInst }
-instdecls : instd { unitBag $1 }
- | instdecls instd { $1 `snocBag` $2 }
-
-instd :: { RdrIfaceInst }
-instd : INSTANCE context DARROW gtycon restrict_inst SEMI { mk_inst $2 $4 $5 }
- | INSTANCE gtycon general_inst SEMI { mk_inst [] $2 $3 }
-
-restrict_inst :: { RdrNameMonoType }
-restrict_inst : gtycon { MonoTyApp $1 [] }
- | OPAREN gtyconvars CPAREN { case $2 of (tc,tvs) -> MonoTyApp tc (map en_mono tvs) }
- | OPAREN VARID COMMA tyvar_list CPAREN { MonoTupleTy (map en_mono ($2:$4)) }
- | OBRACK VARID CBRACK { MonoListTy (en_mono $2) }
- | OPAREN VARID RARROW VARID CPAREN { MonoFunTy (en_mono $2) (en_mono $4) }
-
-general_inst :: { RdrNameMonoType }
-general_inst : gtycon { MonoTyApp $1 [] }
- | OPAREN gtyconapp CPAREN { case $2 of (tc,tys) -> MonoTyApp tc tys }
- | OPAREN type COMMA types CPAREN { MonoTupleTy ($2:$4) }
- | OBRACK type CBRACK { MonoListTy $2 }
- | OPAREN btype RARROW type CPAREN { MonoFunTy $2 $4 }
-
-tyvar_list :: { [FAST_STRING] }
-tyvar_list : VARID { [$1] }
- | tyvar_list COMMA VARID { $1 ++ [$3]
+field : var_names1 '::' type { ($1, Unbanged $3) }
+ | var_names1 '::' '!' type { ($1, Banged $4) }
--------------------------------------------------------------------------
- }
-pragmas_part :: { LocalPragmasMap }
-pragmas_part : PRAGMAS_PART
- { emptyFM }
- | { emptyFM }
+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 : qtc_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 }
+
+atype :: { RdrNameHsType }
+atype : qtc_name { MonoTyVar $1 }
+ | tv_name { MonoTyVar $1 }
+ | '(' ')' { 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 }
+---------------------------------------------------------------------
+
+mod_name :: { Module }
+ : CONID { $1 }
+
+var_fs :: { FAST_STRING }
+ : VARID { $1 }
+ | VARSYM { $1 }
+ | '-' { SLIT("-") }
+ | '!' { SLIT("!") }
+
+data_fs :: { FAST_STRING }
+ : CONID { $1 }
+ | CONSYM { $1 }
+ | '->' { SLIT("->") }
+ | '(' ')' { SLIT("()") }
+ | '(' commas ')' { snd (mkTupNameStr $2) }
+ | '[' ']' { SLIT("[]") }
+
+commas :: { Int }
+ : ',' { 2 }
+ | commas ',' { $1 + 1 }
+
+val_occ :: { OccName }
+ : var_fs { VarOcc $1 }
+ | data_fs { VarOcc $1 }
+
+val_occs :: { [OccName] }
+ : val_occ { [$1] }
+ | val_occ val_occs { $1 : $2 }
+
+entity_occ :: { OccName }
+ : var_fs { VarOcc $1 }
+ | data_fs { TCOcc $1 }
+
+var_name :: { RdrName }
+var_name : var_fs { Unqual (VarOcc $1) }
+
+qvar_name :: { RdrName }
+qvar_name : var_name { $1 }
+ | QVARID { lexVarQual $1 }
+ | QVARSYM { lexVarQual $1 }
+
+var_names :: { [RdrName] }
+var_names : { [] }
+ | var_name var_names { $1 : $2 }
+
+var_names1 :: { [RdrName] }
+var_names1 : var_name var_names { $1 : $2 }
+
+data_name :: { RdrName }
+ : CONID { Unqual (VarOcc $1) }
+ | CONSYM { Unqual (VarOcc $1) }
+ | '(' commas ')' { Unqual (VarOcc (snd (mkTupNameStr $2))) }
+ | '[' ']' { Unqual (VarOcc SLIT("[]")) }
+
+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 : 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) }
+ | VARSYM { Unqual (TvOcc $1) {- Allow t2 as a tyvar -} }
+
+tv_bndr :: { HsTyVar RdrName }
+tv_bndr : tv_name '::' akind { IfaceTyVar $1 $3 }
+ | tv_name { UserTyVar $1 }
+
+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 : { [] }
+ | 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
{
+
+data IfaceStuff = PIface ParsedIface
+ | PIdInfo [HsIdInfo RdrName]
+ | PType RdrNameHsType
+
+mkConDecl name (ex_tvs, ex_ctxt) details loc = ConDecl name ex_tvs ex_ctxt details loc
}
projects / ghc-hetmet.git / blobdiff