+{- 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
+module ParseIface ( parseIface, parseType, parseRules, parseIdInfo ) where
#include "HsVersions.h"
import HsSyn -- quite a bit of stuff
import RdrHsSyn -- oodles of synonyms
-import HsDecls ( HsIdInfo(..), HsStrictnessInfo(..) )
-import HsTypes ( mkHsForAllTy )
+import HsTypes ( mkHsForAllTy, mkHsTupCon )
import HsCore
-import Const ( Literal(..), mkMachInt_safe )
-import BasicTypes ( IfaceFlavour(..), Fixity(..), FixityDirection(..),
- NewOrData(..), Version
+import Literal ( Literal(..), mkMachInt, mkMachInt64, mkMachWord, mkMachWord64 )
+import BasicTypes ( Fixity(..), FixityDirection(..), StrictnessMark(..),
+ NewOrData(..), Version, initialVersion, Boxity(..),
+ Activation(..)
)
-import HsPragmas ( noDataPragmas, noClassPragmas )
-import Type ( Kind, mkArrowKind, boxedTypeKind, openTypeKind )
-import IdInfo ( ArityInfo, exactArity )
+import CostCentre ( CostCentre(..), IsCafCC(..), IsDupdCC(..) )
+import Type ( Kind, mkArrowKind, liftedTypeKind, openTypeKind, usageTypeKind )
+import IdInfo ( InlinePragInfo(..) )
+import ForeignCall ( ForeignCall(..), CCallConv(..), CCallSpec(..), CCallTarget(..) )
import Lex
-import RnEnv ( ifaceUnqualTC, ifaceUnqualVar, ifaceUnqualTv, ifaceQualVar, ifaceQualTC )
-import RnMonad ( ImportVersion, LocalVersion, ParsedIface(..), WhatsImported(..),
- RdrNamePragma, ExportItem, RdrAvailInfo, GenAvailInfo(..)
- )
-import Bag ( emptyBag, unitBag, snocBag )
-import FiniteMap ( emptyFM, unitFM, addToFM, plusFM, bagToFM, FiniteMap )
-import Name ( OccName, isTCOcc, Provenance, Module,
- varOcc, tcOcc, mkModuleFS
+import RnMonad ( ParsedIface(..), ExportItem, IfaceDeprecs )
+import HscTypes ( WhetherHasOrphans, IsBootInterface, GenAvailInfo(..),
+ ImportVersion, WhatsImported(..),
+ RdrAvailInfo )
+
+import RdrName ( RdrName, mkRdrUnqual, mkIfaceOrig )
+import Name ( OccName )
+import OccName ( mkSysOccFS,
+ tcName, varName, dataName, clsName, tvName,
+ EncodedFS
)
-import PrelMods ( mkTupNameStr, mkUbxTupNameStr )
-import PrelInfo ( mkTupConRdrName, mkUbxTupConRdrName )
+import Module ( ModuleName, PackageName, mkSysModuleNameFS, mkModule )
import SrcLoc ( SrcLoc )
-import Maybes
+import CmdLineOpts ( opt_InPackage, opt_IgnoreIfacePragmas )
import Outputable
+import Class ( DefMeth (..) )
import GlaExts
+import FastString ( tailFS )
}
-%name parseIface
-%tokentype { IfaceToken }
-%monad { IfM }{ thenIf }{ returnIf }
-%lexer { lexIface } { ITeof }
+%name parseIface iface
+%name parseType type
+%name parseIdInfo id_info
+%name parseRules rules_and_deprecs
+
+%tokentype { Token }
+%monad { P }{ thenP }{ returnP }
+%lexer { lexer } { ITeof }
%token
+ 'as' { ITas }
'case' { ITcase } -- Haskell keywords
'class' { ITclass }
'data' { ITdata }
'deriving' { ITderiving }
'do' { ITdo }
'else' { ITelse }
+ 'hiding' { IThiding }
'if' { ITif }
'import' { ITimport }
'in' { ITin }
'module' { ITmodule }
'newtype' { ITnewtype }
'of' { ITof }
+ 'qualified' { ITqualified }
'then' { ITthen }
'type' { ITtype }
'where' { ITwhere }
- 'as' { ITas }
- 'qualified' { ITqualified }
- 'hiding' { IThiding }
- '__interface' { ITinterface } -- GHC-extension keywords
- '__export' { ITexport }
- '__instimport' { ITinstimport }
- '__forall' { ITforall }
+ 'forall' { ITforall } -- GHC extension keywords
+ 'foreign' { ITforeign }
+ 'export' { ITexport }
+ 'label' { ITlabel }
+ 'dynamic' { ITdynamic }
+ 'unsafe' { ITunsafe }
+ 'with' { ITwith }
+ 'stdcall' { ITstdcallconv }
+ 'ccall' { ITccallconv }
+
+ '__interface' { ITinterface } -- interface keywords
+ '__export' { IT__export }
+ '__depends' { ITdepends }
+ '__forall' { IT__forall }
'__letrec' { ITletrec }
'__coerce' { ITcoerce }
- '__inline' { ITinline }
+ '__inline_me' { ITinlineMe }
+ '__inline_call'{ ITinlineCall }
'__DEFAULT' { ITdefaultbranch }
'__bot' { ITbottom }
'__integer' { ITinteger_lit }
'__float' { ITfloat_lit }
+ '__word' { ITword_lit }
+ '__int64' { ITint64_lit }
+ '__word64' { ITword64_lit }
'__rational' { ITrational_lit }
'__addr' { ITaddr_lit }
+ '__label' { ITlabel_lit }
'__litlit' { ITlit_lit }
'__string' { ITstring_lit }
'__ccall' { ITccall $$ }
- '__scc' { ITscc $$ }
- '__a' { ITtypeapp }
+ '__scc' { ITscc }
+ '__sccC' { ITsccAllCafs }
+
+ '__u' { ITusage }
'__A' { ITarity }
'__P' { ITspecialise }
'__C' { ITnocaf }
- '__U' { ITunfold $$ }
+ '__U' { ITunfold }
'__S' { ITstrict $$ }
+ '__R' { ITrules }
+ '__M' { ITcprinfo }
+ '__D' { ITdeprecated }
'..' { ITdotdot } -- reserved symbols
'::' { ITdcolon }
'<-' { ITlarrow }
'->' { ITrarrow }
'@' { ITat }
- '~' { ITtilde }
'=>' { ITdarrow }
'-' { ITminus }
'!' { ITbang }
- '/\\' { ITbiglam } -- GHC-extension symbols
-
'{' { ITocurly } -- special symbols
'}' { ITccurly }
+ '{|' { ITocurlybar } -- special symbols
+ '|}' { ITccurlybar } -- special symbols
'[' { ITobrack }
']' { ITcbrack }
'(' { IToparen }
'#)' { ITcubxparen }
';' { ITsemi }
',' { ITcomma }
+ '.' { ITdot }
VARID { ITvarid $$ } -- identifiers
CONID { ITconid $$ }
QVARSYM { ITqvarsym $$ }
QCONSYM { ITqconsym $$ }
+ IPVARID { ITipvarid $$ } -- GHC extension
+
PRAGMA { ITpragma $$ }
CHAR { ITchar $$ }
STRING { ITstring $$ }
INTEGER { ITinteger $$ }
RATIONAL { ITrational $$ }
+ CLITLIT { ITlitlit $$ }
UNKNOWN { ITunknown $$ }
%%
--- 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' mod_name INTEGER checkVersion 'where'
- import_part
- instance_import_part
+iface : '__interface' package mod_name
+ version sub_versions
+ orphans checkVersion 'where'
exports_part
+ import_part
+ fix_decl_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 $10) -- Decls
- (reverse $9) -- Local instances
- }
+ rules_and_deprecs_part
+ { ParsedIface {
+ pi_mod = mkModule $3 $2, -- Module itself
+ pi_vers = $4, -- Module version
+ pi_orphan = $6,
+ pi_exports = (fst $5, $9), -- Exports
+ pi_usages = $10, -- Usages
+ pi_fixity = $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 exports 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 opt_bang INTEGER '::' whats_imported ';'
- { ($2, $3, fromInteger $4, $6) }
+import_decl : 'import' mod_name orphans is_boot whats_imported ';'
+ { ({-mkSysModuleNameFS-} $2, $3, $4, $5) }
+
+orphans :: { WhetherHasOrphans }
+orphans : { False }
+ | '!' { True }
+
+is_boot :: { IsBootInterface }
+is_boot : { False }
+ | '@' { True }
whats_imported :: { WhatsImported OccName }
-whats_imported : { Everything }
- | name_version_pair name_version_pairs { Specifically ($1:$2) }
+whats_imported : { NothingAtAll }
+ | '::' version { Everything $2 }
+ | '::' version version version name_version_pairs { Specifically $2 (Just $3) $5 $4 }
+ | '::' version version name_version_pairs { Specifically $2 Nothing $4 $3 }
-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 : entity_occ INTEGER { ($1, fromInteger $2) }
+name_version_pair :: { (OccName, Version) }
+name_version_pair : var_occ version { ($1, $2) }
+ | tc_occ version { ($1, $2) }
-instance_import_part :: { [Module] }
-instance_import_part : { [] }
- | instance_import_part '__instimport' mod_name ';'
- { $3 : $1 }
--------------------------------------------------------------------------
exports_part :: { [ExportItem] }
exports_part : { [] }
- | exports_part '__export' opt_bang mod_name entities ';'
- { ($4,$3,$5) : $1 }
-
-opt_bang :: { IfaceFlavour }
-opt_bang : { HiFile }
- | '!' { HiBootFile }
+ | '__export' mod_name entities ';'
+ exports_part { ({-mkSysModuleNameFS-} $2, $3) : $5 }
entities :: { [RdrAvailInfo] }
-entities : { [] }
- | entity entities { $1 : $2 }
+entities : { [] }
+ | entity entities { $1 : $2 }
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 }
+entity : var_occ { Avail $1 }
+ | tc_occ { AvailTC $1 [$1] }
+ | tc_occ '|' stuff_inside { AvailTC $1 $3 }
+ | tc_occ stuff_inside { AvailTC $1 ($1:$2) }
+ -- Note that the "main name" comes at the beginning
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 }
+
+
--------------------------------------------------------------------------
+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 }
-----------------------------------------------------------------------------
| 'where' '{' csigs1 '}' { $3 }
csigs1 :: { [RdrNameSig] }
-csigs1 : csig { [$1] }
+csigs1 : { [] }
| csig ';' csigs1 { $1 : $3 }
csig :: { RdrNameSig }
-csig : src_loc var_name '::' type { ClassOpSig $2 Nothing $4 $1 }
- | src_loc var_name '=' '::' type
- { ClassOpSig $2
- (Just (error "Un-filled-in default method"))
- $5 $1 }
+csig : src_loc qvar_name '::' type { ClassOpSig $2 NoDefMeth $4 $1 }
+ | src_loc qvar_name ';' '::' type { ClassOpSig $2 GenDefMeth $5 $1 }
+ | src_loc qvar_name '=' '::' type { mkClassOpSigDM $2 $5 $1 }
--------------------------------------------------------------------------
| instance_decl_part inst_decl { $2 : $1 }
inst_decl :: { RdrNameInstDecl }
-inst_decl : src_loc 'instance' type '=' var_name ';'
+inst_decl : src_loc 'instance' type '=' qvar_name ';'
{ InstDecl $3
EmptyMonoBinds {- No bindings -}
[] {- No user pragmas -}
--------------------------------------------------------------------------
-decls_part :: { [(Version, RdrNameHsDecl)] }
+decls_part :: { [(Version, RdrNameTyClDecl)] }
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 data_fs tv_bndrs constrs
- { TyClD (TyData DataType $3 (ifaceUnqualTC $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 val_occ
- { FixD (FixitySig (Unqual $4) (Fixity $3 $2) $1) }
+ | opt_version decl ';' decls_part { ($1,$2):$4 }
+
+decl :: { RdrNameTyClDecl }
+decl : src_loc qvar_name '::' type maybe_idinfo
+ { IfaceSig $2 $4 ($5 $2) $1 }
+ | src_loc 'type' qtc_name tv_bndrs '=' type
+ { TySynonym $3 $4 $6 $1 }
+ | src_loc 'foreign' 'type' qtc_name
+ { ForeignType $4 Nothing DNType $1 }
+ | src_loc 'data' opt_decl_context qtc_name tv_bndrs constrs
+ { mkTyData DataType $3 $4 $5 $6 (length $6) Nothing $1 }
+ | src_loc 'newtype' opt_decl_context qtc_name tv_bndrs newtype_constr
+ { mkTyData NewType $3 $4 $5 $6 1 Nothing $1 }
+ | src_loc 'class' opt_decl_context qtc_name tv_bndrs fds csigs
+ { mkClassDecl $3 $4 $5 $6 $7 Nothing $1 }
maybe_idinfo :: { RdrName -> [HsIdInfo RdrName] }
maybe_idinfo : {- empty -} { \_ -> [] }
- | src_loc PRAGMA { \x ->
- case parseIface $2 $1 of
- Succeeded (PIdInfo id_info) -> id_info
- Failed err -> pprPanic "IdInfo parse failed"
- (vcat [ppr x, err])
+ | pragma { \x -> if opt_IgnoreIfacePragmas then []
+ else case $1 of
+ POk _ id_info -> id_info
+ PFailed err -> pprPanic "IdInfo parse failed"
+ (vcat [ppr x, err])
+ }
+ {-
+ If a signature decl is being loaded, and opt_IgnoreIfacePragmas is on,
+ we toss away unfolding information.
+
+ Also, if the signature is loaded from a module we're importing from source,
+ we do the same. This is to avoid situations when compiling a pair of mutually
+ recursive modules, peering at unfolding info in the interface file of the other,
+ e.g., you compile A, it looks at B's interface file and may as a result change
+ its interface file. Hence, B is recompiled, maybe changing its interface file,
+ which will the unfolding info used in A to become invalid. Simple way out is to
+ just ignore unfolding info.
+
+ [Jan 99: I junked the second test above. If we're importing from an hi-boot
+ file there isn't going to *be* any pragma info. The above comment
+ dates from a time where we picked up a .hi file first if it existed.]
+ -}
+
+pragma :: { ParseResult [HsIdInfo RdrName] }
+pragma : src_loc PRAGMA { parseIdInfo $2 PState{ bol = 0#, atbol = 1#,
+ context = [],
+ glasgow_exts = 1#,
+ loc = $1 }
}
-----------------------------------------------------------------------------
+rules_and_deprecs_part :: { ([RdrNameRuleDecl], IfaceDeprecs) }
+rules_and_deprecs_part : {- empty -} { ([], Nothing) }
+ | rules_prag { case $1 of
+ POk _ rds -> rds
+ PFailed err -> pprPanic "Rules/Deprecations parse failed" err
+ }
+
+rules_prag :: { ParseResult ([RdrNameRuleDecl], IfaceDeprecs) }
+rules_prag : src_loc PRAGMA { parseRules $2 PState{ bol = 0#, atbol = 1#,
+ context = [],
+ glasgow_exts = 1#,
+ loc = $1 }
+ }
+
+rules_and_deprecs :: { ([RdrNameRuleDecl], IfaceDeprecs) }
+rules_and_deprecs : rule_prag deprec_prag { ($1, $2) }
+
+
+-----------------------------------------------------------------------------
+
+rule_prag :: { [RdrNameRuleDecl] }
+rule_prag : {- empty -} { [] }
+ | '__R' rules { $2 }
+
+rules :: { [RdrNameRuleDecl] }
+ : {- empty -} { [] }
+ | rule ';' rules { $1:$3 }
+
+rule :: { RdrNameRuleDecl }
+rule : src_loc STRING activation rule_forall qvar_name
+ core_args '=' core_expr { IfaceRule $2 $3 $4 $5 $6 $8 $1 }
+
+activation :: { Activation }
+activation : {- empty -} { AlwaysActive }
+ | '[' INTEGER ']' { ActiveAfter (fromInteger $2) }
+
+rule_forall :: { [UfBinder RdrName] }
+rule_forall : '__forall' '{' core_bndrs '}' { $3 }
+
+-----------------------------------------------------------------------------
+
+deprec_prag :: { IfaceDeprecs }
+deprec_prag : {- empty -} { Nothing }
+ | '__D' deprecs { Just $2 }
+
+deprecs :: { Either DeprecTxt [(RdrName,DeprecTxt)] }
+deprecs : STRING { Left $1 }
+ | deprec_list { Right $1 }
+
+deprec_list :: { [(RdrName,DeprecTxt)] }
+deprec_list : deprec { [$1] }
+ | deprec ';' deprec_list { $1 : $3 }
+
+deprec :: { (RdrName,DeprecTxt) }
+deprec : deprec_name STRING { ($1, $2) }
+
+deprec_name :: { RdrName }
+ : qvar_name { $1 }
+ | qtc_name { $1 }
+
+-----------------------------------------------------------------------------
+
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 }
-----------------------------------------------------------------
+----------------------------------------------------------------------------
constrs :: { [RdrNameConDecl] {- empty for handwritten abstract -} }
: { [] }
| constr '|' constrs1 { $1 : $3 }
constr :: { RdrNameConDecl }
-constr : src_loc ex_stuff data_fs batypes { mkConDecl (ifaceUnqualVar $3) $2 (VanillaCon $4) $1 }
- | src_loc ex_stuff data_fs '{' fields1 '}' { mkConDecl (ifaceUnqualVar $3) $2 (RecCon $5) $1 }
+constr : src_loc ex_stuff qdata_name batypes { mk_con_decl $3 $2 (VanillaCon $4) $1 }
+ | src_loc ex_stuff qdata_name '{' fields1 '}' { mk_con_decl $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] }
+newtype_constr :: { [RdrNameConDecl] {- Not allowed to be empty -} }
+newtype_constr : src_loc '=' ex_stuff qdata_name atype { [mk_con_decl $4 $3 (VanillaCon [unbangedType $5]) $1] }
+ | src_loc '=' ex_stuff qdata_name '{' qvar_name '::' atype '}'
+ { [mk_con_decl $4 $3 (RecCon [([$6], unbangedType $8)]) $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 : { [] }
| batype batypes { $1 : $2 }
batype :: { RdrNameBangType }
-batype : atype { Unbanged $1 }
- | '!' atype { Banged $2 }
+batype : tatype { unbangedType $1 }
+ | '!' tatype { BangType MarkedStrict $2 }
+ | '!' '!' tatype { BangType MarkedUnboxed $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) }
+field : qvar_names1 '::' ttype { ($1, unbangedType $3) }
+ | qvar_names1 '::' '!' ttype { ($1, BangType MarkedStrict $4) }
+ | qvar_names1 '::' '!' '!' ttype { ($1, BangType MarkedUnboxed $5) }
+
--------------------------------------------------------------------------
type :: { RdrNameHsType }
-type : '__forall' forall context '=>' type
- { mkHsForAllTy $2 $3 $5 }
- | btype '->' type { MonoFunTy $1 $3 }
+type : '__forall' tv_bndrs
+ opt_context '=>' type { mkHsForAllTy (Just $2) $3 $5 }
+ | btype '->' type { HsFunTy $1 $3 }
| btype { $1 }
-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] }
| class ',' context_list1 { $1 : $3 }
-class :: { (RdrName, [RdrNameHsType]) }
-class : qtc_name atypes { ($1, $2) }
+class :: { HsPred RdrName }
+class : qcls_name atypes { (HsClassP $1 $2) }
+ | ipvar_name '::' type { (HsIParam $1 $3) }
+
+types0 :: { [RdrNameHsType] {- Zero or more -} }
+types0 : {- empty -} { [ ] }
+ | type { [ $1 ] }
+ | types2 { $1 }
types2 :: { [RdrNameHsType] {- Two or more -} }
types2 : type ',' type { [$1,$3] }
btype :: { RdrNameHsType }
btype : atype { $1 }
- | btype atype { MonoTyApp $1 $2 }
+ | btype atype { HsAppTy $1 $2 }
+ | '__u' atype atype { HsUsageTy $2 $3 }
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 }
+atype : qtc_name { HsTyVar $1 }
+ | tv_name { HsTyVar $1 }
+ | '.' { hsUsOnce }
+ | '!' { hsUsMany }
+ | '(' ')' { 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 }
atypes :: { [RdrNameHsType] {- Zero or more -} }
atypes : { [] }
| atype atypes { $1 : $2 }
----------------------------------------------------------------------
+--------------------------------------------------------------------------
-mod_name :: { Module }
- : CONID { mkModuleFS $1 }
+-- versions of type/btype/atype that cant begin with '!' (or '.')
+-- for use where the kind is definitely known NOT to be '$'
+
+ttype :: { RdrNameHsType }
+ttype : '__forall' tv_bndrs
+ opt_context '=>' type { mkHsForAllTy (Just $2) $3 $5 }
+ | tbtype '->' type { HsFunTy $1 $3 }
+ | tbtype { $1 }
+
+tbtype :: { RdrNameHsType }
+tbtype : tatype { $1 }
+ | tbtype atype { HsAppTy $1 $2 }
+ | '__u' atype atype { HsUsageTy $2 $3 }
+
+tatype :: { RdrNameHsType }
+tatype : 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 }
+---------------------------------------------------------------------
-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 }
+package :: { PackageName }
+ : STRING { $1 }
+ | {- empty -} { opt_InPackage }
+ -- Useful for .hi-boot files,
+ -- which can omit the package Id
+ -- Module loops are always within a package
-val_occ :: { OccName }
- : var_fs { varOcc $1 }
- | data_fs { varOcc $1 }
+mod_name :: { ModuleName }
+ : CONID { mkSysModuleNameFS $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_fs :: { EncodedFS }
+ : VARID { $1 }
+ | 'as' { SLIT("as") }
+ | 'qualified' { SLIT("qualified") }
+ | 'hiding' { SLIT("hiding") }
+ | 'forall' { SLIT("forall") }
+ | 'foreign' { SLIT("foreign") }
+ | 'export' { SLIT("export") }
+ | 'label' { SLIT("label") }
+ | 'dynamic' { SLIT("dynamic") }
+ | 'unsafe' { SLIT("unsafe") }
+ | 'with' { SLIT("with") }
+ | 'ccall' { SLIT("ccall") }
+ | 'stdcall' { SLIT("stdcall") }
+
+var_occ :: { OccName }
+ : var_fs { mkSysOccFS varName $1 }
var_name :: { RdrName }
-var_name : var_fs { ifaceUnqualVar $1 }
+var_name : var_occ { mkRdrUnqual $1 }
qvar_name :: { RdrName }
qvar_name : var_name { $1 }
- | QVARID { ifaceQualVar $1 }
- | QVARSYM { ifaceQualVar $1 }
+ | QVARID { mkIfaceOrig varName $1 }
+
+ipvar_name :: { RdrName }
+ : IPVARID { mkRdrUnqual (mkSysOccFS varName (tailFS $1)) }
+
+qvar_names1 :: { [RdrName] }
+qvar_names1 : qvar_name { [$1] }
+ | qvar_name qvar_names1 { $1 : $2 }
var_names :: { [RdrName] }
var_names : { [] }
var_names1 :: { [RdrName] }
var_names1 : var_name var_names { $1 : $2 }
-data_name :: { RdrName }
- : CONID { ifaceUnqualVar $1 }
- | CONSYM { ifaceUnqualVar $1 }
- | '(' commas ')' { ifaceUnqualVar (snd (mkTupNameStr $2)) }
- | '[' ']' { ifaceUnqualVar SLIT("[]") }
+---------------------------------------------------
+
+data_occ :: { OccName }
+ : CONID { mkSysOccFS dataName $1 }
qdata_name :: { RdrName }
-qdata_name : data_name { $1 }
- | QCONID { ifaceQualVar $1 }
- | QCONSYM { ifaceQualVar $1 }
+ : data_occ { mkRdrUnqual $1 }
+ | QCONID { mkIfaceOrig dataName $1 }
-qdata_names :: { [RdrName] }
-qdata_names : { [] }
- | qdata_name qdata_names { $1 : $2 }
+var_or_data_name :: { RdrName }
+ : qvar_name { $1 }
+ | qdata_name { $1 }
-tc_name :: { RdrName }
-tc_name : CONID { ifaceUnqualTC $1 }
- | CONSYM { ifaceUnqualTC $1 }
- | '(' '->' ')' { ifaceUnqualTC SLIT("->") }
- | '(' commas ')' { ifaceUnqualTC (snd (mkTupNameStr $2)) }
- | '[' ']' { ifaceUnqualTC SLIT("[]") }
+---------------------------------------------------
+tc_occ :: { OccName }
+ : CONID { mkSysOccFS tcName $1 }
qtc_name :: { RdrName }
-qtc_name : tc_name { $1 }
- | QCONID { ifaceQualTC $1 }
- | QCONSYM { ifaceQualTC $1 }
+ : tc_occ { mkRdrUnqual $1 }
+ | QCONID { mkIfaceOrig tcName $1 }
+
+---------------------------------------------------
+qcls_name :: { RdrName }
+ : CONID { mkRdrUnqual (mkSysOccFS clsName $1) }
+ | QCONID { mkIfaceOrig clsName $1 }
+---------------------------------------------------
tv_name :: { RdrName }
-tv_name : VARID { ifaceUnqualTv $1 }
- | VARSYM { ifaceUnqualTv $1 {- Allow t2 as a tyvar -} }
+ : var_fs { mkRdrUnqual (mkSysOccFS tvName $1) }
+
+tv_bndr :: { HsTyVarBndr RdrName }
+ : tv_name '::' akind { IfaceTyVar $1 $3 }
+ | tv_name { IfaceTyVar $1 liftedTypeKind }
-tv_bndr :: { HsTyVar RdrName }
-tv_bndr : tv_name '::' akind { IfaceTyVar $1 $3 }
- | tv_name { IfaceTyVar $1 boxedTypeKind }
+tv_bndrs :: { [HsTyVarBndr RdrName] }
+ : tv_bndrs1 { $1 }
+ | '[' tv_bndrs1 ']' { $2 } -- Backward compatibility
-tv_bndrs :: { [HsTyVar RdrName] }
+tv_bndrs1 :: { [HsTyVarBndr RdrName] }
: { [] }
- | tv_bndr tv_bndrs { $1 : $2 }
+ | tv_bndr tv_bndrs1 { $1 : $2 }
+---------------------------------------------------
+fds :: { [([RdrName], [RdrName])] }
+ : {- empty -} { [] }
+ | '|' fds1 { reverse $2 }
+
+fds1 :: { [([RdrName], [RdrName])] }
+ : fds1 ',' fd { $3 : $1 }
+ | fd { [$1] }
+
+fd :: { ([RdrName], [RdrName]) }
+ : varids0 '->' varids0 { (reverse $1, reverse $3) }
+
+varids0 :: { [RdrName] }
+ : {- empty -} { [] }
+ | varids0 tv_name { $2 : $1 }
+
+---------------------------------------------------
kind :: { Kind }
: akind { $1 }
| akind '->' kind { mkArrowKind $1 $3 }
akind :: { Kind }
: VARSYM { if $1 == SLIT("*") then
- boxedTypeKind
+ liftedTypeKind
else if $1 == SLIT("?") then
openTypeKind
- else panic "ParseInterface: akind"
+ else if $1 == SLIT("\36") then
+ usageTypeKind -- dollar
+ else panic "ParseInterface: akind"
}
| '(' kind ')' { $2 }
--------------------------------------------------------------------------
id_info :: { [HsIdInfo RdrName] }
-id_info : { [] }
+ : id_info_item { [$1] }
| id_info_item id_info { $1 : $2 }
id_info_item :: { HsIdInfo RdrName }
-id_info_item : '__A' arity_info { HsArity $2 }
- | strict_info { HsStrictness $1 }
- | '__U' core_expr { HsUnfold $1 (Just $2) }
- | '__U' { HsUnfold $1 Nothing }
- | '__P' spec_tvs
- atypes '=' core_expr { HsSpecialise $2 $3 $5 }
+ : '__A' INTEGER { HsArity (fromInteger $2) }
+ | '__U' inline_prag core_expr { HsUnfold $2 $3 }
+ | '__S' { HsStrictness $1 }
| '__C' { HsNoCafRefs }
+ | '__P' qvar_name INTEGER { HsWorker $2 (fromInteger $3) }
-
-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 }
+inline_prag :: { InlinePragInfo }
+ : {- empty -} { AlwaysActive }
+ | '[' INTEGER ']' { ActiveAfter (fromInteger $2) }
-------------------------------------------------------
core_expr :: { UfExpr RdrName }
| '__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) [] }
+ | '__litlit' STRING atype { UfLitLit $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 { $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 }
- : '__a' atype { UfType $2 }
+ : '@' atype { UfType $2 }
| core_aexpr { $1 }
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 {}).
-
- | core_lit { UfCon (UfLitCon $1) [] }
+
+ | core_lit { UfLit $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 }
+
+ | '(' ')' { 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
+ (is_dyn, is_casm, may_gc) = $2
+
+ target | is_dyn = DynamicTarget
+ | is_casm = CasmTarget $3
+ | otherwise = StaticTarget $3
+
+ ccall = CCallSpec target CCallConv may_gc
+ in
+ UfFCall (CCall ccall) $4
+ }
+
+
+comma_exprs0 :: { [UfExpr RdrName] } -- Zero or more
+comma_exprs0 : {- empty -} { [ ] }
+ | core_expr { [ $1 ] }
+ | comma_exprs2 { $1 }
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) }
+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) }
+ | '(' ')' { (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 }
-
-comma_var_names :: { [RdrName] } -- Zero, or two or more
-comma_var_names : { [] }
- | var_name ',' comma_var_names1 { $1 : $3 }
-
+core_pat_names :: { [RdrName] }
+core_pat_names : { [] }
+ | core_pat_name core_pat_names { $1 : $2 }
+
+-- Tyvar names and variable names live in different name spaces
+-- so they need to be signalled separately. But we don't record
+-- types or kinds in a pattern; we work that out from the type
+-- of the case scrutinee
+core_pat_name :: { RdrName }
+core_pat_name : var_name { $1 }
+ | '@' tv_name { $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 }
+core_lit : integer { mkMachInt $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 }
+ | rational { MachDouble $1 }
+ | '__word' integer { mkMachWord $2 }
+ | '__word64' integer { mkMachWord64 $2 }
+ | '__int64' integer { mkMachInt64 $2 }
+ | '__float' rational { MachFloat $2 }
+ | '__addr' integer { MachAddr $2 }
+ | '__label' STRING { MachLabel $2 }
+
+integer :: { Integer }
+ : INTEGER { $1 }
+ | '-' INTEGER { (-$2) }
+
+rational :: { Rational }
+ : RATIONAL { $1 }
+ | '-' RATIONAL { (-$2) }
core_bndr :: { UfBinder RdrName }
core_bndr : core_val_bndr { $1 }
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 }
+core_tv_bndr : '@' tv_name '::' akind { UfTyBinder $2 $4 }
+ | '@' tv_name { UfTyBinder $2 liftedTypeKind }
ccall_string :: { FAST_STRING }
: STRING { $1 }
+ | CLITLIT { $1 }
| VARID { $1 }
| CONID { $1 }
+------------------------------------------------------------------------
+scc :: { CostCentre }
+ : '__sccC' '{' mod_name '}' { AllCafsCC $3 }
+ | '__scc' '{' cc_name mod_name cc_dup cc_caf '}'
+ { NormalCC { cc_name = $3, cc_mod = $4,
+ cc_is_dupd = $5, cc_is_caf = $6 } }
+
+cc_name :: { EncodedFS }
+ : CONID { $1 }
+ | var_fs { $1 }
+
+cc_dup :: { IsDupdCC }
+cc_dup : { OriginalCC }
+ | '!' { DupdCC }
+
+cc_caf :: { IsCafCC }
+ : { NotCafCC }
+ | '__C' { CafCC }
+
-------------------------------------------------------------------
src_loc :: { SrcLoc }
-src_loc : {% getSrcLocIf }
+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)) }
-- Haskell code
{
+happyError :: P a
+happyError buf PState{ loc = loc } = PFailed (ifaceParseErr buf loc)
-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
+mk_con_decl name (ex_tvs, ex_ctxt) details loc = mkConDecl name ex_tvs ex_ctxt details loc
}
projects / ghc-hetmet.git / blobdiff