\begin{code}
#include "HsVersions.h"
-module RnSource ( rnSource, rnPolyType ) where
+module RnSource ( rnDecl, rnHsType ) where
-import Ubiq
-import RnLoop -- *check* the RnPass/RnExpr/RnBinds loop-breaking
+IMP_Ubiq()
+IMPORT_DELOOPER(RnLoop) -- *check* the RnPass/RnExpr/RnBinds loop-breaking
import HsSyn
+import HsDecls ( HsIdInfo(..) )
import HsPragmas
+import HsTypes ( getTyVarName )
import RdrHsSyn
import RnHsSyn
-import RnMonad
+import HsCore
+import CmdLineOpts ( opt_IgnoreIfacePragmas )
+
import RnBinds ( rnTopBinds, rnMethodBinds )
+import RnEnv ( bindTyVarsRn, lookupBndrRn, lookupOccRn, lookupImplicitOccRn, bindLocalsRn,
+ lookupOptionalOccRn, newSysName, newDfunName,
+ listType_RDR, tupleType_RDR )
+import RnMonad
-import Bag ( emptyBag, unitBag, consBag, unionManyBags, listToBag, bagToList )
-import Class ( derivableClassKeys )
+import Name ( Name, isLocallyDefined,
+ OccName(..), occNameString, prefixOccName,
+ ExportFlag(..),
+ Provenance,
+ SYN_IE(NameSet), unionNameSets, emptyNameSet, mkNameSet, unitNameSet,
+ elemNameSet
+ )
+import ErrUtils ( addErrLoc, addShortErrLocLine, addShortWarnLocLine )
+import FiniteMap ( emptyFM, lookupFM, addListToFM_C )
+import Id ( GenId{-instance NamedThing-} )
+import IdInfo ( IdInfo, StrictnessInfo(..), FBTypeInfo, DemandInfo, ArgUsageInfo )
+import SpecEnv ( SpecEnv )
+import Lex ( isLexCon )
+import CoreUnfold ( Unfolding(..), SimpleUnfolding )
+import MagicUFs ( MagicUnfoldingFun )
+import PrelInfo ( derivingOccurrences, evalClass_RDR, numClass_RDR )
import ListSetOps ( unionLists, minusList )
import Maybes ( maybeToBool, catMaybes )
-import Name ( Name, isLocallyDefined, isAvarid, getLocalName, ExportFlag(..), RdrName )
+import Bag ( emptyBag, unitBag, consBag, unionManyBags, unionBags, listToBag, bagToList )
+import Outputable ( Outputable(..){-instances-} )
+--import PprStyle -- ToDo:rm
import Pretty
import SrcLoc ( SrcLoc )
+-- import TyCon ( TyCon{-instance NamedThing-} )
import Unique ( Unique )
-import UniqFM ( addListToUFM, listToUFM )
-import UniqSet ( UniqSet(..) )
-import Util ( isIn, isn'tIn, sortLt, panic, assertPanic )
-
+import UniqSet ( SYN_IE(UniqSet) )
+import UniqFM ( UniqFM, lookupUFM )
+import Util ( isIn, isn'tIn, thenCmp, removeDups, cmpPString,
+ panic, assertPanic{- , pprTrace ToDo:rm-} )
\end{code}
-rnSource `renames' the source module and export list.
+rnDecl `renames' declarations.
It simultaneously performs dependency analysis and precedence parsing.
It also does the following error checks:
\begin{enumerate}
\end{enumerate}
-\begin{code}
-rnSource :: [Module]
- -> Bag (Module,(RnName,ExportFlag)) -- unqualified imports from module
- -> Bag RenamedFixityDecl -- fixity info for imported names
- -> RdrNameHsModule
- -> RnM s (RenamedHsModule,
- Name -> ExportFlag, -- export info
- Bag (RnName, RdrName)) -- occurrence info
-
-rnSource imp_mods unqual_imps imp_fixes
- (HsModule mod version exports _ fixes
- ty_decls specdata_sigs class_decls
- inst_decls specinst_sigs defaults
- binds _ src_loc)
-
- = pushSrcLocRn src_loc $
-
- rnExports (mod:imp_mods) unqual_imps exports `thenRn` \ exported_fn ->
- rnFixes fixes `thenRn` \ src_fixes ->
- let
- pair_name inf@(InfixL n _) = (n, inf)
- pair_name inf@(InfixR n _) = (n, inf)
- pair_name inf@(InfixN n _) = (n, inf)
-
- imp_fixes_fm = listToUFM (map pair_name (bagToList imp_fixes))
- all_fixes_fm = addListToUFM imp_fixes_fm (map pair_name src_fixes)
- in
- setExtraRn all_fixes_fm $
-
- mapRn rnTyDecl ty_decls `thenRn` \ new_ty_decls ->
- mapRn rnSpecDataSig specdata_sigs `thenRn` \ new_specdata_sigs ->
- mapRn rnClassDecl class_decls `thenRn` \ new_class_decls ->
- mapRn rnInstDecl inst_decls `thenRn` \ new_inst_decls ->
- mapRn rnSpecInstSig specinst_sigs `thenRn` \ new_specinst_sigs ->
- rnDefaultDecl defaults `thenRn` \ new_defaults ->
- rnTopBinds binds `thenRn` \ new_binds ->
-
- getOccurrenceUpRn `thenRn` \ occ_info ->
-
- returnRn (
- HsModule mod version
- trashed_exports trashed_imports src_fixes
- new_ty_decls new_specdata_sigs new_class_decls
- new_inst_decls new_specinst_sigs new_defaults
- new_binds [] src_loc,
- exported_fn,
- occ_info
- )
- where
- trashed_exports = trace "rnSource:trashed_exports" Nothing
- trashed_imports = trace "rnSource:trashed_imports" []
-\end{code}
-
-
%*********************************************************
%* *
-\subsection{Export list}
+\subsection{Value declarations}
%* *
%*********************************************************
\begin{code}
-rnExports :: [Module]
- -> Bag (Module,(RnName,ExportFlag))
- -> Maybe [RdrNameIE]
- -> RnM s (Name -> ExportFlag)
-
-rnExports mods unqual_imps Nothing
- = returnRn (\n -> if isLocallyDefined n then ExportAll else NotExported)
+rnDecl :: RdrNameHsDecl -> RnMS s RenamedHsDecl
-rnExports mods unqual_imps (Just exps)
- = mapAndUnzipRn (rnIE mods) exps `thenRn` \ (mod_maybes, exp_bags) ->
- let
- exp_mods = catMaybes mod_maybes
- exp_names = unionManyBags exp_bags
+rnDecl (ValD binds) = rnTopBinds binds `thenRn` \ new_binds ->
+ returnRn (ValD new_binds)
- -- check for duplicate names
- -- check for duplicate modules
- -- check for duplicate local names
- -- add in module contents checking for duplicate local names
+rnDecl (SigD (IfaceSig name ty id_infos loc))
+ = pushSrcLocRn loc $
+ lookupBndrRn name `thenRn` \ name' ->
+ rnHsType ty `thenRn` \ ty' ->
- -- build export flag lookup function
- exp_fn n = if isLocallyDefined n then ExportAll else NotExported
- in
- returnRn exp_fn
+ -- Get the pragma info, unless we should ignore it
+ (if opt_IgnoreIfacePragmas then
+ returnRn []
+ else
+ mapRn rnIdInfo id_infos
+ ) `thenRn` \ id_infos' ->
-rnIE mods (IEVar name)
- = lookupValue name `thenRn` \ rn ->
- checkIEVar rn `thenRn` \ exps ->
- returnRn (Nothing, exps)
- where
- checkIEVar (RnName n) = returnRn (unitBag (n,ExportAbs))
- checkIEVar (RnUnbound _) = returnRn emptyBag
- checkIEVar rn@(RnClassOp _ _) = getSrcLocRn `thenRn` \ src_loc ->
- failButContinueRn emptyBag (classOpExportErr rn src_loc)
- checkIEVar rn = panic "checkIEVar"
-
-rnIE mods (IEThingAbs name)
- = lookupTyConOrClass name `thenRn` \ rn ->
- checkIEAbs rn `thenRn` \ exps ->
- returnRn (Nothing, exps)
- where
- checkIEAbs (RnSyn n) = returnRn (unitBag (n,ExportAbs))
- checkIEAbs (RnData n _) = returnRn (unitBag (n,ExportAbs))
- checkIEAbs (RnClass n _) = returnRn (unitBag (n,ExportAbs))
- checkIEAbs (RnUnbound _) = returnRn emptyBag
- checkIEAbs rn = panic "checkIEAbs"
-
-rnIE mods (IEThingAll name)
- = lookupTyConOrClass name `thenRn` \ rn ->
- checkIEAll rn `thenRn` \ exps ->
- returnRn (Nothing, exps)
- where
- checkIEAll (RnData n cons) = returnRn (consBag (exp_all n) (listToBag (map exp_all cons)))
- checkIEAll (RnClass n ops) = returnRn (consBag (exp_all n) (listToBag (map exp_all ops)))
- checkIEAll (RnUnbound _) = returnRn emptyBag
- checkIEAll rn@(RnSyn _) = getSrcLocRn `thenRn` \ src_loc ->
- warnAndContinueRn emptyBag (synAllExportErr rn src_loc)
- checkIEAll rn = panic "checkIEAll"
-
- exp_all n = (n, ExportAll)
-
-rnIE mods (IEThingWith name names)
- = lookupTyConOrClass name `thenRn` \ rn ->
- mapRn lookupValue names `thenRn` \ rns ->
- checkIEWith rn rns `thenRn` \ exps ->
- returnRn (Nothing, exps)
- where
- checkIEWith rn@(RnData n cons) rns
- | same_names cons rns = returnRn (consBag (exp_all n) (listToBag (map exp_all cons)))
- | otherwise = rnWithErr "constructrs" rn cons rns
- checkIEWith rn@(RnClass n ops) rns
- | same_names ops rns = returnRn (consBag (exp_all n) (listToBag (map exp_all ops)))
- | otherwise = rnWithErr "class ops" rn ops rns
- checkIEWith (RnUnbound _) rns = returnRn emptyBag
- checkIEWith rn@(RnSyn _) rns = getSrcLocRn `thenRn` \ src_loc ->
- failButContinueRn emptyBag (synAllExportErr rn src_loc)
- checkIEWith rn rns = panic "checkIEWith"
-
- exp_all n = (n, ExportAll)
-
- same_names has rns
- = all (not.isRnUnbound) rns &&
- sortLt (<) (map uniqueOf has) == sortLt (<) (map uniqueOf rns)
-
- rnWithErr str rn has rns
- = getSrcLocRn `thenRn` \ src_loc ->
- failButContinueRn emptyBag (withExportErr str rn has rns src_loc)
-
-rnIE mods (IEModuleContents mod)
- | isIn "IEModule" mod mods = returnRn (Just mod, emptyBag)
- | otherwise = getSrcLocRn `thenRn` \ src_loc ->
- failButContinueRn (Nothing,emptyBag) (badModExportErr mod src_loc)
+ returnRn (SigD (IfaceSig name' ty' id_infos' loc))
\end{code}
%*********************************************************
checks at the same time.
\begin{code}
-rnTyDecl :: RdrNameTyDecl -> RnM_Fixes s RenamedTyDecl
-
-rnTyDecl (TyData context tycon tyvars condecls derivings pragmas src_loc)
+rnDecl (TyD (TyData context tycon tyvars condecls derivings pragmas src_loc))
= pushSrcLocRn src_loc $
- lookupTyCon tycon `thenRn` \ tycon' ->
- mkTyVarNamesEnv src_loc tyvars `thenRn` \ (tv_env, tyvars') ->
- rnContext tv_env context `thenRn` \ context' ->
- rnConDecls tv_env condecls `thenRn` \ condecls' ->
- rn_derivs tycon' src_loc derivings `thenRn` \ derivings' ->
+ lookupBndrRn tycon `thenRn` \ tycon' ->
+ bindTyVarsRn "data declaration" tyvars $ \ tyvars' ->
+ rnContext context `thenRn` \ context' ->
+ mapRn rnConDecl condecls `thenRn` \ condecls' ->
+ rnDerivs derivings `thenRn` \ derivings' ->
ASSERT(isNoDataPragmas pragmas)
- returnRn (TyData context' tycon' tyvars' condecls' derivings' noDataPragmas src_loc)
+ returnRn (TyD (TyData context' tycon' tyvars' condecls' derivings' noDataPragmas src_loc))
-rnTyDecl (TyNew context tycon tyvars condecl derivings pragmas src_loc)
+rnDecl (TyD (TyNew context tycon tyvars condecl derivings pragmas src_loc))
= pushSrcLocRn src_loc $
- lookupTyCon tycon `thenRn` \ tycon' ->
- mkTyVarNamesEnv src_loc tyvars `thenRn` \ (tv_env, tyvars') ->
- rnContext tv_env context `thenRn` \ context' ->
- rnConDecls tv_env condecl `thenRn` \ condecl' ->
- rn_derivs tycon' src_loc derivings `thenRn` \ derivings' ->
+ lookupBndrRn tycon `thenRn` \ tycon' ->
+ bindTyVarsRn "newtype declaration" tyvars $ \ tyvars' ->
+ rnContext context `thenRn` \ context' ->
+ rnConDecl condecl `thenRn` \ condecl' ->
+ rnDerivs derivings `thenRn` \ derivings' ->
ASSERT(isNoDataPragmas pragmas)
- returnRn (TyNew context' tycon' tyvars' condecl' derivings' noDataPragmas src_loc)
+ returnRn (TyD (TyNew context' tycon' tyvars' condecl' derivings' noDataPragmas src_loc))
-rnTyDecl (TySynonym name tyvars ty src_loc)
+rnDecl (TyD (TySynonym name tyvars ty src_loc))
= pushSrcLocRn src_loc $
- lookupTyCon name `thenRn` \ name' ->
- mkTyVarNamesEnv src_loc tyvars `thenRn` \ (tv_env, tyvars') ->
- rnMonoType tv_env ty `thenRn` \ ty' ->
- returnRn (TySynonym name' tyvars' ty' src_loc)
-
-rn_derivs tycon2 locn Nothing -- derivs not specified
- = returnRn Nothing
-
-rn_derivs tycon2 locn (Just ds)
- = mapRn (rn_deriv tycon2 locn) ds `thenRn` \ derivs ->
- returnRn (Just derivs)
- where
- rn_deriv tycon2 locn clas
- = lookupClass clas `thenRn` \ clas_name ->
- addErrIfRn (uniqueOf clas_name `not_elem` derivableClassKeys)
- (derivingNonStdClassErr clas locn)
- `thenRn_`
- returnRn clas_name
- where
- not_elem = isn'tIn "rn_deriv"
-\end{code}
-
-@rnConDecls@ uses the `global name function' to create a new
-constructor in which local names have been replaced by their original
-names, reporting any unknown names.
-
-\begin{code}
-rnConDecls :: TyVarNamesEnv
- -> [RdrNameConDecl]
- -> RnM_Fixes s [RenamedConDecl]
-
-rnConDecls tv_env con_decls
- = mapRn rn_decl con_decls
- where
- rn_decl (ConDecl name tys src_loc)
- = pushSrcLocRn src_loc $
- lookupValue name `thenRn` \ new_name ->
- mapRn rn_bang_ty tys `thenRn` \ new_tys ->
- returnRn (ConDecl new_name new_tys src_loc)
-
- rn_decl (ConOpDecl ty1 op ty2 src_loc)
- = pushSrcLocRn src_loc $
- lookupValue op `thenRn` \ new_op ->
- rn_bang_ty ty1 `thenRn` \ new_ty1 ->
- rn_bang_ty ty2 `thenRn` \ new_ty2 ->
- returnRn (ConOpDecl new_ty1 new_op new_ty2 src_loc)
-
- rn_decl (NewConDecl name ty src_loc)
- = pushSrcLocRn src_loc $
- lookupValue name `thenRn` \ new_name ->
- rn_mono_ty ty `thenRn` \ new_ty ->
- returnRn (NewConDecl new_name new_ty src_loc)
-
- rn_decl (RecConDecl con fields src_loc)
- = panic "rnConDecls:RecConDecl"
-
- ----------
- rn_mono_ty = rnMonoType tv_env
-
- rn_bang_ty (Banged ty)
- = rn_mono_ty ty `thenRn` \ new_ty ->
- returnRn (Banged new_ty)
- rn_bang_ty (Unbanged ty)
- = rn_mono_ty ty `thenRn` \ new_ty ->
- returnRn (Unbanged new_ty)
-\end{code}
-
-%*********************************************************
-%* *
-\subsection{SPECIALIZE data pragmas}
-%* *
-%*********************************************************
-
-\begin{code}
-rnSpecDataSig :: RdrNameSpecDataSig
- -> RnM_Fixes s RenamedSpecDataSig
-
-rnSpecDataSig (SpecDataSig tycon ty src_loc)
- = pushSrcLocRn src_loc $
- let
- tyvars = extractMonoTyNames ty
- in
- mkTyVarNamesEnv src_loc tyvars `thenRn` \ (tv_env,_) ->
- lookupTyCon tycon `thenRn` \ tycon' ->
- rnMonoType tv_env ty `thenRn` \ ty' ->
- returnRn (SpecDataSig tycon' ty' src_loc)
+ lookupBndrRn name `thenRn` \ name' ->
+ bindTyVarsRn "type declaration" tyvars $ \ tyvars' ->
+ rnHsType ty `thenRn` \ ty' ->
+ returnRn (TyD (TySynonym name' tyvars' ty' src_loc))
\end{code}
%*********************************************************
original names, reporting any unknown names.
\begin{code}
-rnClassDecl :: RdrNameClassDecl -> RnM_Fixes s RenamedClassDecl
-
-rnClassDecl (ClassDecl context cname tyvar sigs mbinds pragmas src_loc)
+rnDecl (ClD (ClassDecl context cname tyvar sigs mbinds pragmas src_loc))
= pushSrcLocRn src_loc $
- mkTyVarNamesEnv src_loc [tyvar] `thenRn` \ (tv_env, [tyvar']) ->
- rnContext tv_env context `thenRn` \ context' ->
- lookupClass cname `thenRn` \ cname' ->
- mapRn (rn_op cname' tv_env) sigs `thenRn` \ sigs' ->
- rnMethodBinds cname' mbinds `thenRn` \ mbinds' ->
+ bindTyVarsRn "class declaration" [tyvar] $ \ [tyvar'] ->
+ rnContext context `thenRn` \ context' ->
+ lookupBndrRn cname `thenRn` \ cname' ->
+ mapRn (rn_op cname' (getTyVarName tyvar')) sigs `thenRn` \ sigs' ->
+ rnMethodBinds mbinds `thenRn` \ mbinds' ->
ASSERT(isNoClassPragmas pragmas)
- returnRn (ClassDecl context' cname' tyvar' sigs' mbinds' NoClassPragmas src_loc)
+ returnRn (ClD (ClassDecl context' cname' tyvar' sigs' mbinds' NoClassPragmas src_loc))
where
- rn_op clas tv_env (ClassOpSig op ty pragmas locn)
+ rn_op clas clas_tyvar sig@(ClassOpSig op _ ty locn)
= pushSrcLocRn locn $
- lookupClassOp clas op `thenRn` \ op_name ->
- rnPolyType tv_env ty `thenRn` \ new_ty ->
-
-{-
-*** Please check here that tyvar' appears in new_ty ***
-*** (used to be in tcClassSig, but it's better here)
-*** not_elem = isn'tIn "tcClassSigs"
-*** -- Check that the class type variable is mentioned
-*** checkTc (clas_tyvar `not_elem` extractTyVarTemplatesFromTy local_ty)
-*** (methodTypeLacksTyVarErr clas_tyvar (_UNPK_ op_name) src_loc) `thenTc_`
--}
-
- ASSERT(isNoClassOpPragmas pragmas)
- returnRn (ClassOpSig op_name new_ty noClassOpPragmas locn)
+ let
+ dm_occ = prefixOccName SLIT("$m") (rdrNameOcc op)
+ in
+ lookupBndrRn op `thenRn` \ op_name ->
+ newSysName dm_occ Exported locn `thenRn` \ dm_name ->
+ addOccurrenceName Optional dm_name `thenRn_`
+ -- Call up interface info for default method, if such info exists
+
+ rnHsType ty `thenRn` \ new_ty ->
+ let
+ (ctxt, op_ty) = case new_ty of
+ HsForAllTy tvs ctxt op_ty -> (ctxt, op_ty)
+ other -> ([], new_ty)
+ ctxt_fvs = extractCtxtTyNames ctxt
+ op_ty_fvs = extractHsTyNames op_ty -- Includes tycons/classes but we
+ -- don't care about that
+ in
+ -- check that class tyvar appears in op_ty
+ checkRn (clas_tyvar `elemNameSet` op_ty_fvs)
+ (classTyVarNotInOpTyErr clas_tyvar sig)
+ `thenRn_`
+
+ -- check that class tyvar *doesn't* appear in the sig's context
+ checkRn (not (clas_tyvar `elemNameSet` ctxt_fvs))
+ (classTyVarInOpCtxtErr clas_tyvar sig)
+ `thenRn_`
+
+-- ASSERT(isNoClassOpPragmas pragmas)
+ returnRn (ClassOpSig op_name dm_name new_ty locn)
\end{code}
%* *
%*********************************************************
-
-@rnInstDecl@ uses the `global name function' to create a new of
-instance declaration in which local names have been replaced by their
-original names, reporting any unknown names.
-
\begin{code}
-rnInstDecl :: RdrNameInstDecl -> RnM_Fixes s RenamedInstDecl
-
-rnInstDecl (InstDecl cname ty mbinds from_here modname uprags pragmas src_loc)
+rnDecl (InstD (InstDecl inst_ty mbinds uprags maybe_dfun src_loc))
= pushSrcLocRn src_loc $
- lookupClass cname `thenRn` \ cname' ->
-
- rnPolyType [] ty `thenRn` \ ty' ->
- -- [] tv_env ensures that tyvars will be foralled
+ rnHsType inst_ty `thenRn` \ inst_ty' ->
+ rnMethodBinds mbinds `thenRn` \ mbinds' ->
+ mapRn rn_uprag uprags `thenRn` \ new_uprags ->
- rnMethodBinds cname' mbinds `thenRn` \ mbinds' ->
- mapRn (rn_uprag cname') uprags `thenRn` \ new_uprags ->
+ newDfunName maybe_dfun src_loc `thenRn` \ dfun_name ->
+ addOccurrenceName Compulsory dfun_name `thenRn_`
+ -- The dfun is not optional, because we use its version number
+ -- to identify the version of the instance declaration
- ASSERT(isNoInstancePragmas pragmas)
- returnRn (InstDecl cname' ty' mbinds'
- from_here modname new_uprags noInstancePragmas src_loc)
+ returnRn (InstD (InstDecl inst_ty' mbinds' new_uprags (Just dfun_name) src_loc))
where
- rn_uprag class_name (SpecSig op ty using locn)
+ rn_uprag (SpecSig op ty using locn)
= pushSrcLocRn src_loc $
- lookupClassOp class_name op `thenRn` \ op_name ->
- rnPolyType nullTyVarNamesEnv ty `thenRn` \ new_ty ->
+ lookupBndrRn op `thenRn` \ op_name ->
+ rnHsType ty `thenRn` \ new_ty ->
rn_using using `thenRn` \ new_using ->
returnRn (SpecSig op_name new_ty new_using locn)
- rn_uprag class_name (InlineSig op locn)
+ rn_uprag (InlineSig op locn)
= pushSrcLocRn locn $
- lookupClassOp class_name op `thenRn` \ op_name ->
+ lookupBndrRn op `thenRn` \ op_name ->
returnRn (InlineSig op_name locn)
- rn_uprag class_name (DeforestSig op locn)
+ rn_uprag (DeforestSig op locn)
= pushSrcLocRn locn $
- lookupClassOp class_name op `thenRn` \ op_name ->
+ lookupBndrRn op `thenRn` \ op_name ->
returnRn (DeforestSig op_name locn)
- rn_uprag class_name (MagicUnfoldingSig op str locn)
+ rn_uprag (MagicUnfoldingSig op str locn)
= pushSrcLocRn locn $
- lookupClassOp class_name op `thenRn` \ op_name ->
+ lookupBndrRn op `thenRn` \ op_name ->
returnRn (MagicUnfoldingSig op_name str locn)
- rn_using Nothing
- = returnRn Nothing
- rn_using (Just v)
- = lookupValue v `thenRn` \ new_v ->
- returnRn (Just new_v)
+ rn_using Nothing = returnRn Nothing
+ rn_using (Just v) = lookupOccRn v `thenRn` \ new_v ->
+ returnRn (Just new_v)
\end{code}
%*********************************************************
%* *
-\subsection{@SPECIALIZE instance@ user-pragmas}
+\subsection{Default declarations}
%* *
%*********************************************************
\begin{code}
-rnSpecInstSig :: RdrNameSpecInstSig
- -> RnM_Fixes s RenamedSpecInstSig
-
-rnSpecInstSig (SpecInstSig clas ty src_loc)
+rnDecl (DefD (DefaultDecl tys src_loc))
= pushSrcLocRn src_loc $
- let
- tyvars = extractMonoTyNames ty
- in
- mkTyVarNamesEnv src_loc tyvars `thenRn` \ (tv_env,_) ->
- lookupClass clas `thenRn` \ new_clas ->
- rnMonoType tv_env ty `thenRn` \ new_ty ->
- returnRn (SpecInstSig new_clas new_ty src_loc)
+ mapRn rnHsType tys `thenRn` \ tys' ->
+ lookupImplicitOccRn numClass_RDR `thenRn_`
+ returnRn (DefD (DefaultDecl tys' src_loc))
\end{code}
%*********************************************************
%* *
-\subsection{Default declarations}
+\subsection{Support code for type/data declarations}
%* *
%*********************************************************
-@rnDefaultDecl@ uses the `global name function' to create a new set
-of default declarations in which local names have been replaced by
-their original names, reporting any unknown names.
+\begin{code}
+rnDerivs :: Maybe [RdrName] -> RnMS s (Maybe [Name])
+
+rnDerivs Nothing -- derivs not specified
+ = lookupImplicitOccRn evalClass_RDR `thenRn_`
+ returnRn Nothing
+
+rnDerivs (Just ds)
+ = lookupImplicitOccRn evalClass_RDR `thenRn_`
+ mapRn rn_deriv ds `thenRn` \ derivs ->
+ returnRn (Just derivs)
+ where
+ rn_deriv clas
+ = lookupOccRn clas `thenRn` \ clas_name ->
+
+ -- Now add extra "occurrences" for things that
+ -- the deriving mechanism will later need in order to
+ -- generate code for this class.
+ case lookupUFM derivingOccurrences clas_name of
+ Nothing -> addErrRn (derivingNonStdClassErr clas_name) `thenRn_`
+ returnRn clas_name
+
+ Just occs -> mapRn lookupImplicitOccRn occs `thenRn_`
+ returnRn clas_name
+\end{code}
\begin{code}
-rnDefaultDecl :: [RdrNameDefaultDecl] -> RnM_Fixes s [RenamedDefaultDecl]
+rnConDecl :: RdrNameConDecl -> RnMS s RenamedConDecl
-rnDefaultDecl [] = returnRn []
-rnDefaultDecl [DefaultDecl tys src_loc]
+rnConDecl (ConDecl name tys src_loc)
= pushSrcLocRn src_loc $
- mapRn (rnMonoType nullTyVarNamesEnv) tys `thenRn` \ tys' ->
- returnRn [DefaultDecl tys' src_loc]
-rnDefaultDecl defs@(d:ds)
- = addErrRn (dupDefaultDeclErr defs) `thenRn_`
- rnDefaultDecl [d]
-\end{code}
+ checkConName name `thenRn_`
+ lookupBndrRn name `thenRn` \ new_name ->
+ mapRn rnBangTy tys `thenRn` \ new_tys ->
+ returnRn (ConDecl new_name new_tys src_loc)
-%*************************************************************************
-%* *
-\subsection{Fixity declarations}
-%* *
-%*************************************************************************
+rnConDecl (ConOpDecl ty1 op ty2 src_loc)
+ = pushSrcLocRn src_loc $
+ lookupBndrRn op `thenRn` \ new_op ->
+ rnBangTy ty1 `thenRn` \ new_ty1 ->
+ rnBangTy ty2 `thenRn` \ new_ty2 ->
+ returnRn (ConOpDecl new_ty1 new_op new_ty2 src_loc)
-\begin{code}
-rnFixes :: [RdrNameFixityDecl] -> RnM s [RenamedFixityDecl]
+rnConDecl (NewConDecl name ty src_loc)
+ = pushSrcLocRn src_loc $
+ checkConName name `thenRn_`
+ lookupBndrRn name `thenRn` \ new_name ->
+ rnHsType ty `thenRn` \ new_ty ->
+ returnRn (NewConDecl new_name new_ty src_loc)
-rnFixes fixities
- = mapRn rn_fixity fixities `thenRn` \ fixes_maybe ->
- returnRn (catMaybes fixes_maybe)
- where
- rn_fixity fix@(InfixL name i)
- = rn_fixity_pieces InfixL name i fix
- rn_fixity fix@(InfixR name i)
- = rn_fixity_pieces InfixR name i fix
- rn_fixity fix@(InfixN name i)
- = rn_fixity_pieces InfixN name i fix
-
- rn_fixity_pieces mk_fixity name i fix
- = lookupValueMaybe name `thenRn` \ maybe_res ->
- case maybe_res of
- Just res | isLocallyDefined res
- -> returnRn (Just (mk_fixity res i))
- _ -> failButContinueRn Nothing (undefinedFixityDeclErr fix)
-
+rnConDecl (RecConDecl name fields src_loc)
+ = pushSrcLocRn src_loc $
+ lookupBndrRn name `thenRn` \ new_name ->
+ mapRn rnField fields `thenRn` \ new_fields ->
+ returnRn (RecConDecl new_name new_fields src_loc)
+
+rnField (names, ty)
+ = mapRn lookupBndrRn names `thenRn` \ new_names ->
+ rnBangTy ty `thenRn` \ new_ty ->
+ returnRn (new_names, new_ty)
+
+rnBangTy (Banged ty)
+ = rnHsType ty `thenRn` \ new_ty ->
+ returnRn (Banged new_ty)
+
+rnBangTy (Unbanged ty)
+ = rnHsType ty `thenRn` \ new_ty ->
+ returnRn (Unbanged new_ty)
+
+-- This data decl will parse OK
+-- data T = a Int
+-- treating "a" as the constructor.
+-- It is really hard to make the parser spot this malformation.
+-- So the renamer has to check that the constructor is legal
+--
+-- We can get an operator as the constructor, even in the prefix form:
+-- data T = :% Int Int
+-- from interface files, which always print in prefix form
+
+checkConName name
+ = checkRn (isLexCon (occNameString (rdrNameOcc name)))
+ (badDataCon name)
\end{code}
+
%*********************************************************
%* *
\subsection{Support code to rename types}
%*********************************************************
\begin{code}
-rnPolyType :: TyVarNamesEnv
- -> RdrNamePolyType
- -> RnM_Fixes s RenamedPolyType
+rnHsType :: RdrNameHsType -> RnMS s RenamedHsType
-rnPolyType tv_env (HsForAllTy tvs ctxt ty)
- = rn_poly_help tv_env tvs ctxt ty
-
-rnPolyType tv_env poly_ty@(HsPreForAllTy ctxt ty)
- = rn_poly_help tv_env forall_tyvars ctxt ty
- where
- mentioned_tyvars = extract_poly_ty_names poly_ty
- forall_tyvars = mentioned_tyvars `minusList` domTyVarNamesEnv tv_env
-
-------------
-extract_poly_ty_names (HsPreForAllTy ctxt ty)
- = extractCtxtTyNames ctxt
- `unionLists`
- extractMonoTyNames ty
-
-------------
-rn_poly_help :: TyVarNamesEnv
- -> [RdrName]
- -> RdrNameContext
- -> RdrNameMonoType
- -> RnM_Fixes s RenamedPolyType
+rnHsType (HsForAllTy tvs ctxt ty)
+ = rn_poly_help tvs ctxt ty
-rn_poly_help tv_env tyvars ctxt ty
- = getSrcLocRn `thenRn` \ src_loc ->
- mkTyVarNamesEnv src_loc tyvars `thenRn` \ (tv_env1, new_tyvars) ->
+rnHsType full_ty@(HsPreForAllTy ctxt ty)
+ = getNameEnv `thenRn` \ name_env ->
let
- tv_env2 = catTyVarNamesEnvs tv_env1 tv_env
+ mentioned_tyvars = extractHsTyVars full_ty
+ forall_tyvars = filter not_in_scope mentioned_tyvars
+ not_in_scope tv = case lookupFM name_env tv of
+ Nothing -> True
+ Just _ -> False
in
- rnContext tv_env2 ctxt `thenRn` \ new_ctxt ->
- rnMonoType tv_env2 ty `thenRn` \ new_ty ->
+ rn_poly_help (map UserTyVar forall_tyvars) ctxt ty
+
+rnHsType (MonoTyVar tyvar)
+ = lookupOccRn tyvar `thenRn` \ tyvar' ->
+ returnRn (MonoTyVar tyvar')
+
+rnHsType (MonoFunTy ty1 ty2)
+ = andRn MonoFunTy (rnHsType ty1) (rnHsType ty2)
+
+rnHsType (MonoListTy _ ty)
+ = lookupImplicitOccRn listType_RDR `thenRn` \ tycon_name ->
+ rnHsType ty `thenRn` \ ty' ->
+ returnRn (MonoListTy tycon_name ty')
+
+rnHsType (MonoTupleTy _ tys)
+ = lookupImplicitOccRn (tupleType_RDR (length tys)) `thenRn` \ tycon_name ->
+ mapRn rnHsType tys `thenRn` \ tys' ->
+ returnRn (MonoTupleTy tycon_name tys')
+
+rnHsType (MonoTyApp ty1 ty2)
+ = rnHsType ty1 `thenRn` \ ty1' ->
+ rnHsType ty2 `thenRn` \ ty2' ->
+ returnRn (MonoTyApp ty1' ty2')
+
+rnHsType (MonoDictTy clas ty)
+ = lookupOccRn clas `thenRn` \ clas' ->
+ rnHsType ty `thenRn` \ ty' ->
+ returnRn (MonoDictTy clas' ty')
+
+
+rn_poly_help :: [HsTyVar RdrName] -- Universally quantified tyvars
+ -> RdrNameContext
+ -> RdrNameHsType
+ -> RnMS s RenamedHsType
+
+rn_poly_help tyvars ctxt ty
+ = bindTyVarsRn "type signature" tyvars $ \ new_tyvars ->
+ rnContext ctxt `thenRn` \ new_ctxt ->
+ rnHsType ty `thenRn` \ new_ty ->
returnRn (HsForAllTy new_tyvars new_ctxt new_ty)
\end{code}
+
\begin{code}
-rnMonoType :: TyVarNamesEnv
- -> RdrNameMonoType
- -> RnM_Fixes s RenamedMonoType
+rnContext :: RdrNameContext -> RnMS s RenamedContext
-rnMonoType tv_env (MonoTyVar tyvar)
- = lookupTyVarName tv_env tyvar `thenRn` \ tyvar' ->
- returnRn (MonoTyVar tyvar')
+rnContext ctxt
+ = mapRn rn_ctxt ctxt `thenRn` \ result ->
+ let
+ (_, dup_asserts) = removeDups cmp_assert result
+ in
+ -- If this isn't an error, then it ought to be:
+ mapRn (addWarnRn . dupClassAssertWarn result) dup_asserts `thenRn_`
+ returnRn result
+ where
+ rn_ctxt (clas, ty)
+ = lookupOccRn clas `thenRn` \ clas_name ->
+ rnHsType ty `thenRn` \ ty' ->
+ returnRn (clas_name, ty')
-rnMonoType tv_env (MonoListTy ty)
- = rnMonoType tv_env ty `thenRn` \ ty' ->
- returnRn (MonoListTy ty')
+ cmp_assert (c1,ty1) (c2,ty2)
+ = (c1 `cmp` c2) `thenCmp` (cmpHsType cmp ty1 ty2)
+\end{code}
-rnMonoType tv_env (MonoFunTy ty1 ty2)
- = andRn MonoFunTy (rnMonoType tv_env ty1)
- (rnMonoType tv_env ty2)
-rnMonoType tv_env (MonoTupleTy tys)
- = mapRn (rnMonoType tv_env) tys `thenRn` \ tys' ->
- returnRn (MonoTupleTy tys')
+%*********************************************************
+%* *
+\subsection{IdInfo}
+%* *
+%*********************************************************
-rnMonoType tv_env (MonoTyApp name tys)
- = let
- lookup_fn = if isAvarid (getLocalName name)
- then lookupTyVarName tv_env
- else lookupTyCon
- in
- lookup_fn name `thenRn` \ name' ->
- mapRn (rnMonoType tv_env) tys `thenRn` \ tys' ->
- returnRn (MonoTyApp name' tys')
+\begin{code}
+rnIdInfo (HsStrictness strict)
+ = rnStrict strict `thenRn` \ strict' ->
+ returnRn (HsStrictness strict')
+
+rnIdInfo (HsUnfold expr) = rnCoreExpr expr `thenRn` \ expr' ->
+ returnRn (HsUnfold expr')
+rnIdInfo (HsArity arity) = returnRn (HsArity arity)
+rnIdInfo (HsUpdate update) = returnRn (HsUpdate update)
+rnIdInfo (HsFBType fb) = returnRn (HsFBType fb)
+rnIdInfo (HsArgUsage au) = returnRn (HsArgUsage au)
+rnIdInfo (HsDeforest df) = returnRn (HsDeforest df)
+
+rnStrict (StrictnessInfo demands (Just worker))
+ = lookupOptionalOccRn worker `thenRn` \ worker' ->
+ returnRn (StrictnessInfo demands (Just worker'))
+
+-- Boring, but necessary for the type checker.
+rnStrict (StrictnessInfo demands Nothing) = returnRn (StrictnessInfo demands Nothing)
+rnStrict BottomGuaranteed = returnRn BottomGuaranteed
+rnStrict NoStrictnessInfo = returnRn NoStrictnessInfo
\end{code}
-\begin{code}
-rnContext :: TyVarNamesEnv -> RdrNameContext -> RnM_Fixes s RenamedContext
+UfCore expressions.
-rnContext tv_env ctxt
- = mapRn rn_ctxt ctxt
+\begin{code}
+rnCoreExpr (UfVar v)
+ = lookupOptionalOccRn v `thenRn` \ v' ->
+ returnRn (UfVar v')
+
+rnCoreExpr (UfLit lit) = returnRn (UfLit lit)
+
+rnCoreExpr (UfCon con args)
+ = lookupOptionalOccRn con `thenRn` \ con' ->
+ mapRn rnCoreArg args `thenRn` \ args' ->
+ returnRn (UfCon con' args')
+
+rnCoreExpr (UfPrim prim args)
+ = rnCorePrim prim `thenRn` \ prim' ->
+ mapRn rnCoreArg args `thenRn` \ args' ->
+ returnRn (UfPrim prim' args')
+
+rnCoreExpr (UfApp fun arg)
+ = rnCoreExpr fun `thenRn` \ fun' ->
+ rnCoreArg arg `thenRn` \ arg' ->
+ returnRn (UfApp fun' arg')
+
+rnCoreExpr (UfCase scrut alts)
+ = rnCoreExpr scrut `thenRn` \ scrut' ->
+ rnCoreAlts alts `thenRn` \ alts' ->
+ returnRn (UfCase scrut' alts')
+
+rnCoreExpr (UfSCC cc expr)
+ = rnCoreExpr expr `thenRn` \ expr' ->
+ returnRn (UfSCC cc expr')
+
+rnCoreExpr(UfCoerce coercion ty body)
+ = rnCoercion coercion `thenRn` \ coercion' ->
+ rnHsType ty `thenRn` \ ty' ->
+ rnCoreExpr body `thenRn` \ body' ->
+ returnRn (UfCoerce coercion' ty' body')
+
+rnCoreExpr (UfLam bndr body)
+ = rnCoreBndr bndr $ \ bndr' ->
+ rnCoreExpr body `thenRn` \ body' ->
+ returnRn (UfLam bndr' body')
+
+rnCoreExpr (UfLet (UfNonRec bndr rhs) body)
+ = rnCoreExpr rhs `thenRn` \ rhs' ->
+ rnCoreBndr bndr $ \ bndr' ->
+ rnCoreExpr body `thenRn` \ body' ->
+ returnRn (UfLet (UfNonRec bndr' rhs') body')
+
+rnCoreExpr (UfLet (UfRec pairs) body)
+ = rnCoreBndrs bndrs $ \ bndrs' ->
+ mapRn rnCoreExpr rhss `thenRn` \ rhss' ->
+ rnCoreExpr body `thenRn` \ body' ->
+ returnRn (UfLet (UfRec (bndrs' `zip` rhss')) body')
where
- rn_ctxt (clas, tyvar)
- = lookupClass clas `thenRn` \ clas_name ->
- lookupTyVarName tv_env tyvar `thenRn` \ tyvar_name ->
- returnRn (clas_name, tyvar_name)
+ (bndrs, rhss) = unzip pairs
\end{code}
+\begin{code}
+rnCoreBndr (UfValBinder name ty) thing_inside
+ = rnHsType ty `thenRn` \ ty' ->
+ bindLocalsRn "unfolding value" [name] $ \ [name'] ->
+ thing_inside (UfValBinder name' ty')
+
+rnCoreBndr (UfTyBinder name kind) thing_inside
+ = bindLocalsRn "unfolding tyvar" [name] $ \ [name'] ->
+ thing_inside (UfTyBinder name' kind)
+
+rnCoreBndr (UfUsageBinder name) thing_inside
+ = bindLocalsRn "unfolding usage" [name] $ \ [name'] ->
+ thing_inside (UfUsageBinder name')
+
+rnCoreBndrs bndrs thing_inside -- Expect them all to be ValBinders
+ = mapRn rnHsType tys `thenRn` \ tys' ->
+ bindLocalsRn "unfolding value" names $ \ names' ->
+ thing_inside (zipWith UfValBinder names' tys')
+ where
+ names = map (\ (UfValBinder name _) -> name) bndrs
+ tys = map (\ (UfValBinder _ ty) -> ty) bndrs
+
+rnCoreBndrNamess names thing_inside
+ = bindLocalsRn "unfolding value" names $ \ names' ->
+ thing_inside names'
+\end{code}
\begin{code}
-classOpExportErr op locn sty
- = ppHang (ppStr "Class operation can only be exported with class:")
- 4 (ppCat [ppr sty op, ppr sty locn])
-
-synAllExportErr syn locn sty
- = ppHang (ppStr "Type synonym should be exported abstractly:")
- 4 (ppCat [ppr sty syn, ppr sty locn])
-
-withExportErr str rn has rns locn sty
- = ppHang (ppBesides [ppStr "Inconsistent list of ", ppStr str, ppStr ": ", ppr sty locn])
- 4 (ppAbove (ppCat [ppStr "expected:", ppInterleave ppComma (map (ppr sty) has)])
- (ppCat [ppStr "found: ", ppInterleave ppComma (map (ppr sty) rns)]))
-
-badModExportErr mod locn sty
- = ppHang (ppStr "Unknown module in export list:")
- 4 (ppCat [ppStr "module", ppPStr mod, ppr sty locn])
-
-derivingNonStdClassErr clas locn sty
- = ppHang (ppStr "Non-standard class in deriving:")
- 4 (ppCat [ppr sty clas, ppr sty locn])
-
-dupDefaultDeclErr defs sty
- = ppHang (ppStr "Duplicate default declarations:")
- 4 (ppAboves (map pp_def_loc defs))
+rnCoreArg (UfVarArg v) = lookupOptionalOccRn v `thenRn` \ v' -> returnRn (UfVarArg v')
+rnCoreArg (UfUsageArg u) = lookupOptionalOccRn u `thenRn` \ u' -> returnRn (UfUsageArg u')
+rnCoreArg (UfTyArg ty) = rnHsType ty `thenRn` \ ty' -> returnRn (UfTyArg ty')
+rnCoreArg (UfLitArg lit) = returnRn (UfLitArg lit)
+
+rnCoreAlts (UfAlgAlts alts deflt)
+ = mapRn rn_alt alts `thenRn` \ alts' ->
+ rnCoreDefault deflt `thenRn` \ deflt' ->
+ returnRn (UfAlgAlts alts' deflt')
+ where
+ rn_alt (con, bndrs, rhs) = lookupOptionalOccRn con `thenRn` \ con' ->
+ bindLocalsRn "unfolding alt" bndrs $ \ bndrs' ->
+ rnCoreExpr rhs `thenRn` \ rhs' ->
+ returnRn (con', bndrs', rhs')
+
+rnCoreAlts (UfPrimAlts alts deflt)
+ = mapRn rn_alt alts `thenRn` \ alts' ->
+ rnCoreDefault deflt `thenRn` \ deflt' ->
+ returnRn (UfPrimAlts alts' deflt')
where
- pp_def_loc (DefaultDecl _ src_loc) = ppr sty src_loc
+ rn_alt (lit, rhs) = rnCoreExpr rhs `thenRn` \ rhs' ->
+ returnRn (lit, rhs')
+
+rnCoreDefault UfNoDefault = returnRn UfNoDefault
+rnCoreDefault (UfBindDefault bndr rhs) = bindLocalsRn "unfolding default" [bndr] $ \ [bndr'] ->
+ rnCoreExpr rhs `thenRn` \ rhs' ->
+ returnRn (UfBindDefault bndr' rhs')
+
+rnCoercion (UfIn n) = lookupOptionalOccRn n `thenRn` \ n' -> returnRn (UfIn n')
+rnCoercion (UfOut n) = lookupOptionalOccRn n `thenRn` \ n' -> returnRn (UfOut n')
+
+rnCorePrim (UfOtherOp op)
+ = lookupOptionalOccRn op `thenRn` \ op' ->
+ returnRn (UfOtherOp op')
+
+rnCorePrim (UfCCallOp str casm gc arg_tys res_ty)
+ = mapRn rnHsType arg_tys `thenRn` \ arg_tys' ->
+ rnHsType res_ty `thenRn` \ res_ty' ->
+ returnRn (UfCCallOp str casm gc arg_tys' res_ty')
+\end{code}
-undefinedFixityDeclErr decl sty
- = ppHang (ppStr "Fixity declaration for unknown operator:")
- 4 (ppr sty decl)
+%*********************************************************
+%* *
+\subsection{Errors}
+%* *
+%*********************************************************
+
+\begin{code}
+derivingNonStdClassErr clas sty
+ = ppCat [ppPStr SLIT("non-standard class in deriving:"), ppr sty clas]
+
+classTyVarNotInOpTyErr clas_tyvar sig sty
+ = ppHang (ppBesides [ppPStr SLIT("Class type variable `"),
+ ppr sty clas_tyvar,
+ ppPStr SLIT("' does not appear in method signature:")])
+ 4 (ppr sty sig)
+
+classTyVarInOpCtxtErr clas_tyvar sig sty
+ = ppHang (ppBesides [ ppPStr SLIT("Class type variable `"), ppr sty clas_tyvar,
+ ppPStr SLIT("' present in method's local overloading context:")])
+ 4 (ppr sty sig)
+
+dupClassAssertWarn ctxt dups sty
+ = ppHang (ppBesides [ppPStr SLIT("Duplicate class assertion `"),
+ ppr sty dups,
+ ppPStr SLIT("' in context:")])
+ 4 (ppr sty ctxt)
+
+badDataCon name sty
+ = ppCat [ppPStr SLIT("Illegal data constructor name:"), ppr sty name]
\end{code}
+
+
+
+
+
+=================== OLD STUFF ======================
+
+%*********************************************************
+%* *
+\subsection{SPECIALIZE data pragmas}
+%* *
+%*********************************************************
+
+\begin{pseudocode}
+rnSpecDataSig :: RdrNameSpecDataSig
+ -> RnMS s RenamedSpecDataSig
+
+rnSpecDataSig (SpecDataSig tycon ty src_loc)
+ = pushSrcLocRn src_loc $
+ let
+ tyvars = filter extractHsTyNames ty
+ in
+ mkTyVarNamesEnv src_loc tyvars `thenRn` \ (tv_env,_) ->
+ lookupOccRn tycon `thenRn` \ tycon' ->
+ rnHsType tv_env ty `thenRn` \ ty' ->
+ returnRn (SpecDataSig tycon' ty' src_loc)
+
+\end{pseudocode}
+
+%*********************************************************
+%* *
+\subsection{@SPECIALIZE instance@ user-pragmas}
+%* *
+%*********************************************************
+
+\begin{pseudocode}
+rnSpecInstSig :: RdrNameSpecInstSig
+ -> RnMS s RenamedSpecInstSig
+
+rnSpecInstSig (SpecInstSig clas ty src_loc)
+ = pushSrcLocRn src_loc $
+ let
+ tyvars = extractHsTyNames is_tyvar_name ty
+ in
+ mkTyVarNamesEnv src_loc tyvars `thenRn` \ (tv_env,_) ->
+ lookupOccRn clas `thenRn` \ new_clas ->
+ rnHsType tv_env ty `thenRn` \ new_ty ->
+ returnRn (SpecInstSig new_clas new_ty src_loc)
+\end{pseudocode}
projects / ghc-hetmet.git / blobdiff