1 //===--- ASTReaderDecl.cpp - Decl Deserialization ---------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the ASTReader::ReadDeclRecord method, which is the
11 // entrypoint for loading a decl.
13 //===----------------------------------------------------------------------===//
15 #include "ASTCommon.h"
16 #include "ASTReaderInternals.h"
17 #include "clang/AST/ASTContext.h"
18 #include "clang/AST/DeclCXX.h"
19 #include "clang/AST/DeclGroup.h"
20 #include "clang/AST/DeclTemplate.h"
21 #include "clang/AST/DeclVisitor.h"
22 #include "clang/AST/Expr.h"
23 #include "clang/Sema/IdentifierResolver.h"
24 #include "clang/Sema/SemaDiagnostic.h"
25 #include "clang/Serialization/ASTReader.h"
26 #include "llvm/Support/SaveAndRestore.h"
28 using namespace clang;
29 using namespace clang::serialization;
31 //===----------------------------------------------------------------------===//
32 // Declaration deserialization
33 //===----------------------------------------------------------------------===//
36 class ASTDeclReader : public DeclVisitor<ASTDeclReader, void> {
38 ASTRecordReader &Record;
39 ASTReader::RecordLocation Loc;
40 const DeclID ThisDeclID;
41 const SourceLocation ThisDeclLoc;
42 typedef ASTReader::RecordData RecordData;
43 TypeID TypeIDForTypeDecl;
44 unsigned AnonymousDeclNumber;
45 GlobalDeclID NamedDeclForTagDecl;
46 IdentifierInfo *TypedefNameForLinkage;
50 ///\brief A flag to carry the information for a decl from the entity is
51 /// used. We use it to delay the marking of the canonical decl as used until
52 /// the entire declaration is deserialized and merged.
53 bool IsDeclMarkedUsed;
55 uint64_t GetCurrentCursorOffset();
57 uint64_t ReadLocalOffset() {
58 uint64_t LocalOffset = Record.readInt();
59 assert(LocalOffset < Loc.Offset && "offset point after current record");
60 return LocalOffset ? Loc.Offset - LocalOffset : 0;
63 uint64_t ReadGlobalOffset() {
64 uint64_t Local = ReadLocalOffset();
65 return Local ? Record.getGlobalBitOffset(Local) : 0;
68 SourceLocation ReadSourceLocation() {
69 return Record.readSourceLocation();
72 SourceRange ReadSourceRange() {
73 return Record.readSourceRange();
76 TypeSourceInfo *GetTypeSourceInfo() {
77 return Record.getTypeSourceInfo();
80 serialization::DeclID ReadDeclID() {
81 return Record.readDeclID();
84 std::string ReadString() {
85 return Record.readString();
88 void ReadDeclIDList(SmallVectorImpl<DeclID> &IDs) {
89 for (unsigned I = 0, Size = Record.readInt(); I != Size; ++I)
90 IDs.push_back(ReadDeclID());
94 return Record.readDecl();
99 return Record.readDeclAs<T>();
102 void ReadQualifierInfo(QualifierInfo &Info) {
103 Record.readQualifierInfo(Info);
106 void ReadDeclarationNameLoc(DeclarationNameLoc &DNLoc, DeclarationName Name) {
107 Record.readDeclarationNameLoc(DNLoc, Name);
110 serialization::SubmoduleID readSubmoduleID() {
111 if (Record.getIdx() == Record.size())
114 return Record.getGlobalSubmoduleID(Record.readInt());
117 Module *readModule() {
118 return Record.getSubmodule(readSubmoduleID());
121 void ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update);
122 void ReadCXXDefinitionData(struct CXXRecordDecl::DefinitionData &Data);
123 void MergeDefinitionData(CXXRecordDecl *D,
124 struct CXXRecordDecl::DefinitionData &&NewDD);
125 void ReadObjCDefinitionData(struct ObjCInterfaceDecl::DefinitionData &Data);
126 void MergeDefinitionData(ObjCInterfaceDecl *D,
127 struct ObjCInterfaceDecl::DefinitionData &&NewDD);
129 static NamedDecl *getAnonymousDeclForMerging(ASTReader &Reader,
132 static void setAnonymousDeclForMerging(ASTReader &Reader, DeclContext *DC,
133 unsigned Index, NamedDecl *D);
135 /// Results from loading a RedeclarableDecl.
136 class RedeclarableResult {
138 GlobalDeclID FirstID;
142 RedeclarableResult(Decl *MergeWith, GlobalDeclID FirstID, bool IsKeyDecl)
143 : MergeWith(MergeWith), FirstID(FirstID), IsKeyDecl(IsKeyDecl) {}
145 /// \brief Retrieve the first ID.
146 GlobalDeclID getFirstID() const { return FirstID; }
148 /// \brief Is this declaration a key declaration?
149 bool isKeyDecl() const { return IsKeyDecl; }
151 /// \brief Get a known declaration that this should be merged with, if
153 Decl *getKnownMergeTarget() const { return MergeWith; }
156 /// \brief Class used to capture the result of searching for an existing
157 /// declaration of a specific kind and name, along with the ability
158 /// to update the place where this result was found (the declaration
159 /// chain hanging off an identifier or the DeclContext we searched in)
161 class FindExistingResult {
167 unsigned AnonymousDeclNumber;
168 IdentifierInfo *TypedefNameForLinkage;
170 void operator=(FindExistingResult &&) = delete;
173 FindExistingResult(ASTReader &Reader)
174 : Reader(Reader), New(nullptr), Existing(nullptr), AddResult(false),
175 AnonymousDeclNumber(0), TypedefNameForLinkage(nullptr) {}
177 FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing,
178 unsigned AnonymousDeclNumber,
179 IdentifierInfo *TypedefNameForLinkage)
180 : Reader(Reader), New(New), Existing(Existing), AddResult(true),
181 AnonymousDeclNumber(AnonymousDeclNumber),
182 TypedefNameForLinkage(TypedefNameForLinkage) {}
184 FindExistingResult(FindExistingResult &&Other)
185 : Reader(Other.Reader), New(Other.New), Existing(Other.Existing),
186 AddResult(Other.AddResult),
187 AnonymousDeclNumber(Other.AnonymousDeclNumber),
188 TypedefNameForLinkage(Other.TypedefNameForLinkage) {
189 Other.AddResult = false;
192 ~FindExistingResult();
194 /// \brief Suppress the addition of this result into the known set of
196 void suppress() { AddResult = false; }
198 operator NamedDecl*() const { return Existing; }
201 operator T*() const { return dyn_cast_or_null<T>(Existing); }
204 static DeclContext *getPrimaryContextForMerging(ASTReader &Reader,
206 FindExistingResult findExisting(NamedDecl *D);
209 ASTDeclReader(ASTReader &Reader, ASTRecordReader &Record,
210 ASTReader::RecordLocation Loc,
211 DeclID thisDeclID, SourceLocation ThisDeclLoc)
212 : Reader(Reader), Record(Record), Loc(Loc),
213 ThisDeclID(thisDeclID), ThisDeclLoc(ThisDeclLoc),
214 TypeIDForTypeDecl(0), NamedDeclForTagDecl(0),
215 TypedefNameForLinkage(nullptr), HasPendingBody(false),
216 IsDeclMarkedUsed(false) {}
218 template <typename DeclT>
219 static Decl *getMostRecentDeclImpl(Redeclarable<DeclT> *D);
220 static Decl *getMostRecentDeclImpl(...);
221 static Decl *getMostRecentDecl(Decl *D);
223 template <typename DeclT>
224 static void attachPreviousDeclImpl(ASTReader &Reader,
225 Redeclarable<DeclT> *D, Decl *Previous,
227 static void attachPreviousDeclImpl(ASTReader &Reader, ...);
228 static void attachPreviousDecl(ASTReader &Reader, Decl *D, Decl *Previous,
231 template <typename DeclT>
232 static void attachLatestDeclImpl(Redeclarable<DeclT> *D, Decl *Latest);
233 static void attachLatestDeclImpl(...);
234 static void attachLatestDecl(Decl *D, Decl *latest);
236 template <typename DeclT>
237 static void markIncompleteDeclChainImpl(Redeclarable<DeclT> *D);
238 static void markIncompleteDeclChainImpl(...);
240 /// \brief Determine whether this declaration has a pending body.
241 bool hasPendingBody() const { return HasPendingBody; }
245 void UpdateDecl(Decl *D);
247 static void setNextObjCCategory(ObjCCategoryDecl *Cat,
248 ObjCCategoryDecl *Next) {
249 Cat->NextClassCategory = Next;
252 void VisitDecl(Decl *D);
253 void VisitPragmaCommentDecl(PragmaCommentDecl *D);
254 void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D);
255 void VisitTranslationUnitDecl(TranslationUnitDecl *TU);
256 void VisitNamedDecl(NamedDecl *ND);
257 void VisitLabelDecl(LabelDecl *LD);
258 void VisitNamespaceDecl(NamespaceDecl *D);
259 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
260 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
261 void VisitTypeDecl(TypeDecl *TD);
262 RedeclarableResult VisitTypedefNameDecl(TypedefNameDecl *TD);
263 void VisitTypedefDecl(TypedefDecl *TD);
264 void VisitTypeAliasDecl(TypeAliasDecl *TD);
265 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
266 RedeclarableResult VisitTagDecl(TagDecl *TD);
267 void VisitEnumDecl(EnumDecl *ED);
268 RedeclarableResult VisitRecordDeclImpl(RecordDecl *RD);
269 void VisitRecordDecl(RecordDecl *RD) { VisitRecordDeclImpl(RD); }
270 RedeclarableResult VisitCXXRecordDeclImpl(CXXRecordDecl *D);
271 void VisitCXXRecordDecl(CXXRecordDecl *D) { VisitCXXRecordDeclImpl(D); }
272 RedeclarableResult VisitClassTemplateSpecializationDeclImpl(
273 ClassTemplateSpecializationDecl *D);
274 void VisitClassTemplateSpecializationDecl(
275 ClassTemplateSpecializationDecl *D) {
276 VisitClassTemplateSpecializationDeclImpl(D);
278 void VisitClassTemplatePartialSpecializationDecl(
279 ClassTemplatePartialSpecializationDecl *D);
280 void VisitClassScopeFunctionSpecializationDecl(
281 ClassScopeFunctionSpecializationDecl *D);
283 VisitVarTemplateSpecializationDeclImpl(VarTemplateSpecializationDecl *D);
284 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D) {
285 VisitVarTemplateSpecializationDeclImpl(D);
287 void VisitVarTemplatePartialSpecializationDecl(
288 VarTemplatePartialSpecializationDecl *D);
289 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
290 void VisitValueDecl(ValueDecl *VD);
291 void VisitEnumConstantDecl(EnumConstantDecl *ECD);
292 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
293 void VisitDeclaratorDecl(DeclaratorDecl *DD);
294 void VisitFunctionDecl(FunctionDecl *FD);
295 void VisitCXXMethodDecl(CXXMethodDecl *D);
296 void VisitCXXConstructorDecl(CXXConstructorDecl *D);
297 void VisitCXXDestructorDecl(CXXDestructorDecl *D);
298 void VisitCXXConversionDecl(CXXConversionDecl *D);
299 void VisitFieldDecl(FieldDecl *FD);
300 void VisitMSPropertyDecl(MSPropertyDecl *FD);
301 void VisitIndirectFieldDecl(IndirectFieldDecl *FD);
302 RedeclarableResult VisitVarDeclImpl(VarDecl *D);
303 void VisitVarDecl(VarDecl *VD) { VisitVarDeclImpl(VD); }
304 void VisitImplicitParamDecl(ImplicitParamDecl *PD);
305 void VisitParmVarDecl(ParmVarDecl *PD);
306 void VisitDecompositionDecl(DecompositionDecl *DD);
307 void VisitBindingDecl(BindingDecl *BD);
308 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
309 DeclID VisitTemplateDecl(TemplateDecl *D);
310 RedeclarableResult VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
311 void VisitClassTemplateDecl(ClassTemplateDecl *D);
312 void VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D);
313 void VisitVarTemplateDecl(VarTemplateDecl *D);
314 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
315 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
316 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
317 void VisitUsingDecl(UsingDecl *D);
318 void VisitUsingPackDecl(UsingPackDecl *D);
319 void VisitUsingShadowDecl(UsingShadowDecl *D);
320 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
321 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
322 void VisitExportDecl(ExportDecl *D);
323 void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
324 void VisitImportDecl(ImportDecl *D);
325 void VisitAccessSpecDecl(AccessSpecDecl *D);
326 void VisitFriendDecl(FriendDecl *D);
327 void VisitFriendTemplateDecl(FriendTemplateDecl *D);
328 void VisitStaticAssertDecl(StaticAssertDecl *D);
329 void VisitBlockDecl(BlockDecl *BD);
330 void VisitCapturedDecl(CapturedDecl *CD);
331 void VisitEmptyDecl(EmptyDecl *D);
333 std::pair<uint64_t, uint64_t> VisitDeclContext(DeclContext *DC);
336 RedeclarableResult VisitRedeclarable(Redeclarable<T> *D);
339 void mergeRedeclarable(Redeclarable<T> *D, RedeclarableResult &Redecl,
340 DeclID TemplatePatternID = 0);
343 void mergeRedeclarable(Redeclarable<T> *D, T *Existing,
344 RedeclarableResult &Redecl,
345 DeclID TemplatePatternID = 0);
348 void mergeMergeable(Mergeable<T> *D);
350 void mergeTemplatePattern(RedeclarableTemplateDecl *D,
351 RedeclarableTemplateDecl *Existing,
352 DeclID DsID, bool IsKeyDecl);
354 ObjCTypeParamList *ReadObjCTypeParamList();
356 // FIXME: Reorder according to DeclNodes.td?
357 void VisitObjCMethodDecl(ObjCMethodDecl *D);
358 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
359 void VisitObjCContainerDecl(ObjCContainerDecl *D);
360 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
361 void VisitObjCIvarDecl(ObjCIvarDecl *D);
362 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
363 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
364 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
365 void VisitObjCImplDecl(ObjCImplDecl *D);
366 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
367 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
368 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
369 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
370 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
371 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
372 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
373 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
375 } // end namespace clang
378 /// Iterator over the redeclarations of a declaration that have already
379 /// been merged into the same redeclaration chain.
380 template<typename DeclT>
381 class MergedRedeclIterator {
382 DeclT *Start, *Canonical, *Current;
384 MergedRedeclIterator() : Current(nullptr) {}
385 MergedRedeclIterator(DeclT *Start)
386 : Start(Start), Canonical(nullptr), Current(Start) {}
388 DeclT *operator*() { return Current; }
390 MergedRedeclIterator &operator++() {
391 if (Current->isFirstDecl()) {
393 Current = Current->getMostRecentDecl();
395 Current = Current->getPreviousDecl();
397 // If we started in the merged portion, we'll reach our start position
398 // eventually. Otherwise, we'll never reach it, but the second declaration
399 // we reached was the canonical declaration, so stop when we see that one
401 if (Current == Start || Current == Canonical)
406 friend bool operator!=(const MergedRedeclIterator &A,
407 const MergedRedeclIterator &B) {
408 return A.Current != B.Current;
411 } // end anonymous namespace
413 template <typename DeclT>
414 static llvm::iterator_range<MergedRedeclIterator<DeclT>>
415 merged_redecls(DeclT *D) {
416 return llvm::make_range(MergedRedeclIterator<DeclT>(D),
417 MergedRedeclIterator<DeclT>());
420 uint64_t ASTDeclReader::GetCurrentCursorOffset() {
421 return Loc.F->DeclsCursor.GetCurrentBitNo() + Loc.F->GlobalBitOffset;
424 void ASTDeclReader::Visit(Decl *D) {
425 DeclVisitor<ASTDeclReader, void>::Visit(D);
427 // At this point we have deserialized and merged the decl and it is safe to
428 // update its canonical decl to signal that the entire entity is used.
429 D->getCanonicalDecl()->Used |= IsDeclMarkedUsed;
430 IsDeclMarkedUsed = false;
432 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
434 DeclaratorDecl::ExtInfo *Info =
435 DD->DeclInfo.get<DeclaratorDecl::ExtInfo *>();
436 Info->TInfo = GetTypeSourceInfo();
439 DD->DeclInfo = GetTypeSourceInfo();
443 if (TypeDecl *TD = dyn_cast<TypeDecl>(D)) {
444 // We have a fully initialized TypeDecl. Read its type now.
445 TD->setTypeForDecl(Reader.GetType(TypeIDForTypeDecl).getTypePtrOrNull());
447 // If this is a tag declaration with a typedef name for linkage, it's safe
448 // to load that typedef now.
449 if (NamedDeclForTagDecl)
450 cast<TagDecl>(D)->TypedefNameDeclOrQualifier =
451 cast<TypedefNameDecl>(Reader.GetDecl(NamedDeclForTagDecl));
452 } else if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
453 // if we have a fully initialized TypeDecl, we can safely read its type now.
454 ID->TypeForDecl = Reader.GetType(TypeIDForTypeDecl).getTypePtrOrNull();
455 } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
456 // FunctionDecl's body was written last after all other Stmts/Exprs.
457 // We only read it if FD doesn't already have a body (e.g., from another
459 // FIXME: Can we diagnose ODR violations somehow?
460 if (Record.readInt()) {
461 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
462 CD->NumCtorInitializers = Record.readInt();
463 if (CD->NumCtorInitializers)
464 CD->CtorInitializers = ReadGlobalOffset();
466 Reader.PendingBodies[FD] = GetCurrentCursorOffset();
467 HasPendingBody = true;
472 void ASTDeclReader::VisitDecl(Decl *D) {
473 if (D->isTemplateParameter() || D->isTemplateParameterPack() ||
474 isa<ParmVarDecl>(D)) {
475 // We don't want to deserialize the DeclContext of a template
476 // parameter or of a parameter of a function template immediately. These
477 // entities might be used in the formulation of its DeclContext (for
478 // example, a function parameter can be used in decltype() in trailing
479 // return type of the function). Use the translation unit DeclContext as a
481 GlobalDeclID SemaDCIDForTemplateParmDecl = ReadDeclID();
482 GlobalDeclID LexicalDCIDForTemplateParmDecl = ReadDeclID();
483 if (!LexicalDCIDForTemplateParmDecl)
484 LexicalDCIDForTemplateParmDecl = SemaDCIDForTemplateParmDecl;
485 Reader.addPendingDeclContextInfo(D,
486 SemaDCIDForTemplateParmDecl,
487 LexicalDCIDForTemplateParmDecl);
488 D->setDeclContext(Reader.getContext().getTranslationUnitDecl());
490 DeclContext *SemaDC = ReadDeclAs<DeclContext>();
491 DeclContext *LexicalDC = ReadDeclAs<DeclContext>();
494 DeclContext *MergedSemaDC = Reader.MergedDeclContexts.lookup(SemaDC);
495 // Avoid calling setLexicalDeclContext() directly because it uses
496 // Decl::getASTContext() internally which is unsafe during derialization.
497 D->setDeclContextsImpl(MergedSemaDC ? MergedSemaDC : SemaDC, LexicalDC,
498 Reader.getContext());
500 D->setLocation(ThisDeclLoc);
501 D->setInvalidDecl(Record.readInt());
502 if (Record.readInt()) { // hasAttrs
504 Record.readAttributes(Attrs);
505 // Avoid calling setAttrs() directly because it uses Decl::getASTContext()
506 // internally which is unsafe during derialization.
507 D->setAttrsImpl(Attrs, Reader.getContext());
509 D->setImplicit(Record.readInt());
510 D->Used = Record.readInt();
511 IsDeclMarkedUsed |= D->Used;
512 D->setReferenced(Record.readInt());
513 D->setTopLevelDeclInObjCContainer(Record.readInt());
514 D->setAccess((AccessSpecifier)Record.readInt());
515 D->FromASTFile = true;
516 D->setModulePrivate(Record.readInt());
517 D->Hidden = D->isModulePrivate();
519 // Determine whether this declaration is part of a (sub)module. If so, it
520 // may not yet be visible.
521 if (unsigned SubmoduleID = readSubmoduleID()) {
522 // Store the owning submodule ID in the declaration.
523 D->setOwningModuleID(SubmoduleID);
526 // Module-private declarations are never visible, so there is no work to do.
527 } else if (Reader.getContext().getLangOpts().ModulesLocalVisibility) {
528 // If local visibility is being tracked, this declaration will become
529 // hidden and visible as the owning module does. Inform Sema that this
530 // declaration might not be visible.
532 } else if (Module *Owner = Reader.getSubmodule(SubmoduleID)) {
533 if (Owner->NameVisibility != Module::AllVisible) {
534 // The owning module is not visible. Mark this declaration as hidden.
537 // Note that this declaration was hidden because its owning module is
539 Reader.HiddenNamesMap[Owner].push_back(D);
545 void ASTDeclReader::VisitPragmaCommentDecl(PragmaCommentDecl *D) {
547 D->setLocation(ReadSourceLocation());
548 D->CommentKind = (PragmaMSCommentKind)Record.readInt();
549 std::string Arg = ReadString();
550 memcpy(D->getTrailingObjects<char>(), Arg.data(), Arg.size());
551 D->getTrailingObjects<char>()[Arg.size()] = '\0';
554 void ASTDeclReader::VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D) {
556 D->setLocation(ReadSourceLocation());
557 std::string Name = ReadString();
558 memcpy(D->getTrailingObjects<char>(), Name.data(), Name.size());
559 D->getTrailingObjects<char>()[Name.size()] = '\0';
561 D->ValueStart = Name.size() + 1;
562 std::string Value = ReadString();
563 memcpy(D->getTrailingObjects<char>() + D->ValueStart, Value.data(),
565 D->getTrailingObjects<char>()[D->ValueStart + Value.size()] = '\0';
568 void ASTDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) {
569 llvm_unreachable("Translation units are not serialized");
572 void ASTDeclReader::VisitNamedDecl(NamedDecl *ND) {
574 ND->setDeclName(Record.readDeclarationName());
575 AnonymousDeclNumber = Record.readInt();
578 void ASTDeclReader::VisitTypeDecl(TypeDecl *TD) {
580 TD->setLocStart(ReadSourceLocation());
581 // Delay type reading until after we have fully initialized the decl.
582 TypeIDForTypeDecl = Record.getGlobalTypeID(Record.readInt());
585 ASTDeclReader::RedeclarableResult
586 ASTDeclReader::VisitTypedefNameDecl(TypedefNameDecl *TD) {
587 RedeclarableResult Redecl = VisitRedeclarable(TD);
589 TypeSourceInfo *TInfo = GetTypeSourceInfo();
590 if (Record.readInt()) { // isModed
591 QualType modedT = Record.readType();
592 TD->setModedTypeSourceInfo(TInfo, modedT);
594 TD->setTypeSourceInfo(TInfo);
598 void ASTDeclReader::VisitTypedefDecl(TypedefDecl *TD) {
599 RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
600 mergeRedeclarable(TD, Redecl);
603 void ASTDeclReader::VisitTypeAliasDecl(TypeAliasDecl *TD) {
604 RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
605 if (auto *Template = ReadDeclAs<TypeAliasTemplateDecl>())
606 // Merged when we merge the template.
607 TD->setDescribedAliasTemplate(Template);
609 mergeRedeclarable(TD, Redecl);
612 ASTDeclReader::RedeclarableResult ASTDeclReader::VisitTagDecl(TagDecl *TD) {
613 RedeclarableResult Redecl = VisitRedeclarable(TD);
616 TD->IdentifierNamespace = Record.readInt();
617 TD->setTagKind((TagDecl::TagKind)Record.readInt());
618 if (!isa<CXXRecordDecl>(TD))
619 TD->setCompleteDefinition(Record.readInt());
620 TD->setEmbeddedInDeclarator(Record.readInt());
621 TD->setFreeStanding(Record.readInt());
622 TD->setCompleteDefinitionRequired(Record.readInt());
623 TD->setBraceRange(ReadSourceRange());
625 switch (Record.readInt()) {
629 TagDecl::ExtInfo *Info = new (Reader.getContext()) TagDecl::ExtInfo();
630 ReadQualifierInfo(*Info);
631 TD->TypedefNameDeclOrQualifier = Info;
634 case 2: // TypedefNameForAnonDecl
635 NamedDeclForTagDecl = ReadDeclID();
636 TypedefNameForLinkage = Record.getIdentifierInfo();
639 llvm_unreachable("unexpected tag info kind");
642 if (!isa<CXXRecordDecl>(TD))
643 mergeRedeclarable(TD, Redecl);
647 void ASTDeclReader::VisitEnumDecl(EnumDecl *ED) {
649 if (TypeSourceInfo *TI = GetTypeSourceInfo())
650 ED->setIntegerTypeSourceInfo(TI);
652 ED->setIntegerType(Record.readType());
653 ED->setPromotionType(Record.readType());
654 ED->setNumPositiveBits(Record.readInt());
655 ED->setNumNegativeBits(Record.readInt());
656 ED->IsScoped = Record.readInt();
657 ED->IsScopedUsingClassTag = Record.readInt();
658 ED->IsFixed = Record.readInt();
660 // If this is a definition subject to the ODR, and we already have a
661 // definition, merge this one into it.
662 if (ED->IsCompleteDefinition &&
663 Reader.getContext().getLangOpts().Modules &&
664 Reader.getContext().getLangOpts().CPlusPlus) {
665 EnumDecl *&OldDef = Reader.EnumDefinitions[ED->getCanonicalDecl()];
667 // This is the first time we've seen an imported definition. Look for a
668 // local definition before deciding that we are the first definition.
669 for (auto *D : merged_redecls(ED->getCanonicalDecl())) {
670 if (!D->isFromASTFile() && D->isCompleteDefinition()) {
677 Reader.MergedDeclContexts.insert(std::make_pair(ED, OldDef));
678 ED->IsCompleteDefinition = false;
679 Reader.mergeDefinitionVisibility(OldDef, ED);
685 if (EnumDecl *InstED = ReadDeclAs<EnumDecl>()) {
686 TemplateSpecializationKind TSK =
687 (TemplateSpecializationKind)Record.readInt();
688 SourceLocation POI = ReadSourceLocation();
689 ED->setInstantiationOfMemberEnum(Reader.getContext(), InstED, TSK);
690 ED->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
694 ASTDeclReader::RedeclarableResult
695 ASTDeclReader::VisitRecordDeclImpl(RecordDecl *RD) {
696 RedeclarableResult Redecl = VisitTagDecl(RD);
697 RD->setHasFlexibleArrayMember(Record.readInt());
698 RD->setAnonymousStructOrUnion(Record.readInt());
699 RD->setHasObjectMember(Record.readInt());
700 RD->setHasVolatileMember(Record.readInt());
704 void ASTDeclReader::VisitValueDecl(ValueDecl *VD) {
706 VD->setType(Record.readType());
709 void ASTDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) {
711 if (Record.readInt())
712 ECD->setInitExpr(Record.readExpr());
713 ECD->setInitVal(Record.readAPSInt());
717 void ASTDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
719 DD->setInnerLocStart(ReadSourceLocation());
720 if (Record.readInt()) { // hasExtInfo
721 DeclaratorDecl::ExtInfo *Info
722 = new (Reader.getContext()) DeclaratorDecl::ExtInfo();
723 ReadQualifierInfo(*Info);
728 void ASTDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
729 RedeclarableResult Redecl = VisitRedeclarable(FD);
730 VisitDeclaratorDecl(FD);
732 ReadDeclarationNameLoc(FD->DNLoc, FD->getDeclName());
733 FD->IdentifierNamespace = Record.readInt();
735 // FunctionDecl's body is handled last at ASTDeclReader::Visit,
736 // after everything else is read.
738 FD->SClass = (StorageClass)Record.readInt();
739 FD->IsInline = Record.readInt();
740 FD->IsInlineSpecified = Record.readInt();
741 FD->IsVirtualAsWritten = Record.readInt();
742 FD->IsPure = Record.readInt();
743 FD->HasInheritedPrototype = Record.readInt();
744 FD->HasWrittenPrototype = Record.readInt();
745 FD->IsDeleted = Record.readInt();
746 FD->IsTrivial = Record.readInt();
747 FD->IsDefaulted = Record.readInt();
748 FD->IsExplicitlyDefaulted = Record.readInt();
749 FD->HasImplicitReturnZero = Record.readInt();
750 FD->IsConstexpr = Record.readInt();
751 FD->HasSkippedBody = Record.readInt();
752 FD->IsLateTemplateParsed = Record.readInt();
753 FD->setCachedLinkage(Linkage(Record.readInt()));
754 FD->EndRangeLoc = ReadSourceLocation();
756 switch ((FunctionDecl::TemplatedKind)Record.readInt()) {
757 case FunctionDecl::TK_NonTemplate:
758 mergeRedeclarable(FD, Redecl);
760 case FunctionDecl::TK_FunctionTemplate:
761 // Merged when we merge the template.
762 FD->setDescribedFunctionTemplate(ReadDeclAs<FunctionTemplateDecl>());
764 case FunctionDecl::TK_MemberSpecialization: {
765 FunctionDecl *InstFD = ReadDeclAs<FunctionDecl>();
766 TemplateSpecializationKind TSK =
767 (TemplateSpecializationKind)Record.readInt();
768 SourceLocation POI = ReadSourceLocation();
769 FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK);
770 FD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
771 mergeRedeclarable(FD, Redecl);
774 case FunctionDecl::TK_FunctionTemplateSpecialization: {
775 FunctionTemplateDecl *Template = ReadDeclAs<FunctionTemplateDecl>();
776 TemplateSpecializationKind TSK =
777 (TemplateSpecializationKind)Record.readInt();
779 // Template arguments.
780 SmallVector<TemplateArgument, 8> TemplArgs;
781 Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
783 // Template args as written.
784 SmallVector<TemplateArgumentLoc, 8> TemplArgLocs;
785 SourceLocation LAngleLoc, RAngleLoc;
786 bool HasTemplateArgumentsAsWritten = Record.readInt();
787 if (HasTemplateArgumentsAsWritten) {
788 unsigned NumTemplateArgLocs = Record.readInt();
789 TemplArgLocs.reserve(NumTemplateArgLocs);
790 for (unsigned i=0; i != NumTemplateArgLocs; ++i)
791 TemplArgLocs.push_back(Record.readTemplateArgumentLoc());
793 LAngleLoc = ReadSourceLocation();
794 RAngleLoc = ReadSourceLocation();
797 SourceLocation POI = ReadSourceLocation();
799 ASTContext &C = Reader.getContext();
800 TemplateArgumentList *TemplArgList
801 = TemplateArgumentList::CreateCopy(C, TemplArgs);
802 TemplateArgumentListInfo TemplArgsInfo(LAngleLoc, RAngleLoc);
803 for (unsigned i=0, e = TemplArgLocs.size(); i != e; ++i)
804 TemplArgsInfo.addArgument(TemplArgLocs[i]);
805 FunctionTemplateSpecializationInfo *FTInfo
806 = FunctionTemplateSpecializationInfo::Create(C, FD, Template, TSK,
808 HasTemplateArgumentsAsWritten ? &TemplArgsInfo
811 FD->TemplateOrSpecialization = FTInfo;
813 if (FD->isCanonicalDecl()) { // if canonical add to template's set.
814 // The template that contains the specializations set. It's not safe to
815 // use getCanonicalDecl on Template since it may still be initializing.
816 FunctionTemplateDecl *CanonTemplate = ReadDeclAs<FunctionTemplateDecl>();
817 // Get the InsertPos by FindNodeOrInsertPos() instead of calling
818 // InsertNode(FTInfo) directly to avoid the getASTContext() call in
819 // FunctionTemplateSpecializationInfo's Profile().
820 // We avoid getASTContext because a decl in the parent hierarchy may
822 llvm::FoldingSetNodeID ID;
823 FunctionTemplateSpecializationInfo::Profile(ID, TemplArgs, C);
824 void *InsertPos = nullptr;
825 FunctionTemplateDecl::Common *CommonPtr = CanonTemplate->getCommonPtr();
826 FunctionTemplateSpecializationInfo *ExistingInfo =
827 CommonPtr->Specializations.FindNodeOrInsertPos(ID, InsertPos);
829 CommonPtr->Specializations.InsertNode(FTInfo, InsertPos);
831 assert(Reader.getContext().getLangOpts().Modules &&
832 "already deserialized this template specialization");
833 mergeRedeclarable(FD, ExistingInfo->Function, Redecl);
838 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
840 UnresolvedSet<8> TemplDecls;
841 unsigned NumTemplates = Record.readInt();
842 while (NumTemplates--)
843 TemplDecls.addDecl(ReadDeclAs<NamedDecl>());
846 TemplateArgumentListInfo TemplArgs;
847 unsigned NumArgs = Record.readInt();
849 TemplArgs.addArgument(Record.readTemplateArgumentLoc());
850 TemplArgs.setLAngleLoc(ReadSourceLocation());
851 TemplArgs.setRAngleLoc(ReadSourceLocation());
853 FD->setDependentTemplateSpecialization(Reader.getContext(),
854 TemplDecls, TemplArgs);
855 // These are not merged; we don't need to merge redeclarations of dependent
861 // Read in the parameters.
862 unsigned NumParams = Record.readInt();
863 SmallVector<ParmVarDecl *, 16> Params;
864 Params.reserve(NumParams);
865 for (unsigned I = 0; I != NumParams; ++I)
866 Params.push_back(ReadDeclAs<ParmVarDecl>());
867 FD->setParams(Reader.getContext(), Params);
870 void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
872 if (Record.readInt()) {
873 // Load the body on-demand. Most clients won't care, because method
874 // definitions rarely show up in headers.
875 Reader.PendingBodies[MD] = GetCurrentCursorOffset();
876 HasPendingBody = true;
877 MD->setSelfDecl(ReadDeclAs<ImplicitParamDecl>());
878 MD->setCmdDecl(ReadDeclAs<ImplicitParamDecl>());
880 MD->setInstanceMethod(Record.readInt());
881 MD->setVariadic(Record.readInt());
882 MD->setPropertyAccessor(Record.readInt());
883 MD->setDefined(Record.readInt());
884 MD->IsOverriding = Record.readInt();
885 MD->HasSkippedBody = Record.readInt();
887 MD->IsRedeclaration = Record.readInt();
888 MD->HasRedeclaration = Record.readInt();
889 if (MD->HasRedeclaration)
890 Reader.getContext().setObjCMethodRedeclaration(MD,
891 ReadDeclAs<ObjCMethodDecl>());
893 MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record.readInt());
894 MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record.readInt());
895 MD->SetRelatedResultType(Record.readInt());
896 MD->setReturnType(Record.readType());
897 MD->setReturnTypeSourceInfo(GetTypeSourceInfo());
898 MD->DeclEndLoc = ReadSourceLocation();
899 unsigned NumParams = Record.readInt();
900 SmallVector<ParmVarDecl *, 16> Params;
901 Params.reserve(NumParams);
902 for (unsigned I = 0; I != NumParams; ++I)
903 Params.push_back(ReadDeclAs<ParmVarDecl>());
905 MD->SelLocsKind = Record.readInt();
906 unsigned NumStoredSelLocs = Record.readInt();
907 SmallVector<SourceLocation, 16> SelLocs;
908 SelLocs.reserve(NumStoredSelLocs);
909 for (unsigned i = 0; i != NumStoredSelLocs; ++i)
910 SelLocs.push_back(ReadSourceLocation());
912 MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs);
915 void ASTDeclReader::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
916 VisitTypedefNameDecl(D);
918 D->Variance = Record.readInt();
919 D->Index = Record.readInt();
920 D->VarianceLoc = ReadSourceLocation();
921 D->ColonLoc = ReadSourceLocation();
924 void ASTDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) {
926 CD->setAtStartLoc(ReadSourceLocation());
927 CD->setAtEndRange(ReadSourceRange());
930 ObjCTypeParamList *ASTDeclReader::ReadObjCTypeParamList() {
931 unsigned numParams = Record.readInt();
935 SmallVector<ObjCTypeParamDecl *, 4> typeParams;
936 typeParams.reserve(numParams);
937 for (unsigned i = 0; i != numParams; ++i) {
938 auto typeParam = ReadDeclAs<ObjCTypeParamDecl>();
942 typeParams.push_back(typeParam);
945 SourceLocation lAngleLoc = ReadSourceLocation();
946 SourceLocation rAngleLoc = ReadSourceLocation();
948 return ObjCTypeParamList::create(Reader.getContext(), lAngleLoc,
949 typeParams, rAngleLoc);
952 void ASTDeclReader::ReadObjCDefinitionData(
953 struct ObjCInterfaceDecl::DefinitionData &Data) {
954 // Read the superclass.
955 Data.SuperClassTInfo = GetTypeSourceInfo();
957 Data.EndLoc = ReadSourceLocation();
958 Data.HasDesignatedInitializers = Record.readInt();
960 // Read the directly referenced protocols and their SourceLocations.
961 unsigned NumProtocols = Record.readInt();
962 SmallVector<ObjCProtocolDecl *, 16> Protocols;
963 Protocols.reserve(NumProtocols);
964 for (unsigned I = 0; I != NumProtocols; ++I)
965 Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>());
966 SmallVector<SourceLocation, 16> ProtoLocs;
967 ProtoLocs.reserve(NumProtocols);
968 for (unsigned I = 0; I != NumProtocols; ++I)
969 ProtoLocs.push_back(ReadSourceLocation());
970 Data.ReferencedProtocols.set(Protocols.data(), NumProtocols, ProtoLocs.data(),
971 Reader.getContext());
973 // Read the transitive closure of protocols referenced by this class.
974 NumProtocols = Record.readInt();
976 Protocols.reserve(NumProtocols);
977 for (unsigned I = 0; I != NumProtocols; ++I)
978 Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>());
979 Data.AllReferencedProtocols.set(Protocols.data(), NumProtocols,
980 Reader.getContext());
983 void ASTDeclReader::MergeDefinitionData(ObjCInterfaceDecl *D,
984 struct ObjCInterfaceDecl::DefinitionData &&NewDD) {
985 // FIXME: odr checking?
988 void ASTDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
989 RedeclarableResult Redecl = VisitRedeclarable(ID);
990 VisitObjCContainerDecl(ID);
991 TypeIDForTypeDecl = Record.getGlobalTypeID(Record.readInt());
992 mergeRedeclarable(ID, Redecl);
994 ID->TypeParamList = ReadObjCTypeParamList();
995 if (Record.readInt()) {
996 // Read the definition.
997 ID->allocateDefinitionData();
999 ReadObjCDefinitionData(ID->data());
1000 ObjCInterfaceDecl *Canon = ID->getCanonicalDecl();
1001 if (Canon->Data.getPointer()) {
1002 // If we already have a definition, keep the definition invariant and
1004 MergeDefinitionData(Canon, std::move(ID->data()));
1005 ID->Data = Canon->Data;
1007 // Set the definition data of the canonical declaration, so other
1008 // redeclarations will see it.
1009 ID->getCanonicalDecl()->Data = ID->Data;
1011 // We will rebuild this list lazily.
1012 ID->setIvarList(nullptr);
1015 // Note that we have deserialized a definition.
1016 Reader.PendingDefinitions.insert(ID);
1018 // Note that we've loaded this Objective-C class.
1019 Reader.ObjCClassesLoaded.push_back(ID);
1021 ID->Data = ID->getCanonicalDecl()->Data;
1025 void ASTDeclReader::VisitObjCIvarDecl(ObjCIvarDecl *IVD) {
1026 VisitFieldDecl(IVD);
1027 IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record.readInt());
1028 // This field will be built lazily.
1029 IVD->setNextIvar(nullptr);
1030 bool synth = Record.readInt();
1031 IVD->setSynthesize(synth);
1034 void ASTDeclReader::VisitObjCProtocolDecl(ObjCProtocolDecl *PD) {
1035 RedeclarableResult Redecl = VisitRedeclarable(PD);
1036 VisitObjCContainerDecl(PD);
1037 mergeRedeclarable(PD, Redecl);
1039 if (Record.readInt()) {
1040 // Read the definition.
1041 PD->allocateDefinitionData();
1043 // Set the definition data of the canonical declaration, so other
1044 // redeclarations will see it.
1045 PD->getCanonicalDecl()->Data = PD->Data;
1047 unsigned NumProtoRefs = Record.readInt();
1048 SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
1049 ProtoRefs.reserve(NumProtoRefs);
1050 for (unsigned I = 0; I != NumProtoRefs; ++I)
1051 ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>());
1052 SmallVector<SourceLocation, 16> ProtoLocs;
1053 ProtoLocs.reserve(NumProtoRefs);
1054 for (unsigned I = 0; I != NumProtoRefs; ++I)
1055 ProtoLocs.push_back(ReadSourceLocation());
1056 PD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
1057 Reader.getContext());
1059 // Note that we have deserialized a definition.
1060 Reader.PendingDefinitions.insert(PD);
1062 PD->Data = PD->getCanonicalDecl()->Data;
1066 void ASTDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) {
1070 void ASTDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) {
1071 VisitObjCContainerDecl(CD);
1072 CD->setCategoryNameLoc(ReadSourceLocation());
1073 CD->setIvarLBraceLoc(ReadSourceLocation());
1074 CD->setIvarRBraceLoc(ReadSourceLocation());
1076 // Note that this category has been deserialized. We do this before
1077 // deserializing the interface declaration, so that it will consider this
1079 Reader.CategoriesDeserialized.insert(CD);
1081 CD->ClassInterface = ReadDeclAs<ObjCInterfaceDecl>();
1082 CD->TypeParamList = ReadObjCTypeParamList();
1083 unsigned NumProtoRefs = Record.readInt();
1084 SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
1085 ProtoRefs.reserve(NumProtoRefs);
1086 for (unsigned I = 0; I != NumProtoRefs; ++I)
1087 ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>());
1088 SmallVector<SourceLocation, 16> ProtoLocs;
1089 ProtoLocs.reserve(NumProtoRefs);
1090 for (unsigned I = 0; I != NumProtoRefs; ++I)
1091 ProtoLocs.push_back(ReadSourceLocation());
1092 CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
1093 Reader.getContext());
1096 void ASTDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
1097 VisitNamedDecl(CAD);
1098 CAD->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>());
1101 void ASTDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
1103 D->setAtLoc(ReadSourceLocation());
1104 D->setLParenLoc(ReadSourceLocation());
1105 QualType T = Record.readType();
1106 TypeSourceInfo *TSI = GetTypeSourceInfo();
1108 D->setPropertyAttributes(
1109 (ObjCPropertyDecl::PropertyAttributeKind)Record.readInt());
1110 D->setPropertyAttributesAsWritten(
1111 (ObjCPropertyDecl::PropertyAttributeKind)Record.readInt());
1112 D->setPropertyImplementation(
1113 (ObjCPropertyDecl::PropertyControl)Record.readInt());
1114 D->setGetterName(Record.readDeclarationName().getObjCSelector());
1115 D->setSetterName(Record.readDeclarationName().getObjCSelector());
1116 D->setGetterMethodDecl(ReadDeclAs<ObjCMethodDecl>());
1117 D->setSetterMethodDecl(ReadDeclAs<ObjCMethodDecl>());
1118 D->setPropertyIvarDecl(ReadDeclAs<ObjCIvarDecl>());
1121 void ASTDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
1122 VisitObjCContainerDecl(D);
1123 D->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>());
1126 void ASTDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
1127 VisitObjCImplDecl(D);
1128 D->setIdentifier(Record.getIdentifierInfo());
1129 D->CategoryNameLoc = ReadSourceLocation();
1132 void ASTDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
1133 VisitObjCImplDecl(D);
1134 D->setSuperClass(ReadDeclAs<ObjCInterfaceDecl>());
1135 D->SuperLoc = ReadSourceLocation();
1136 D->setIvarLBraceLoc(ReadSourceLocation());
1137 D->setIvarRBraceLoc(ReadSourceLocation());
1138 D->setHasNonZeroConstructors(Record.readInt());
1139 D->setHasDestructors(Record.readInt());
1140 D->NumIvarInitializers = Record.readInt();
1141 if (D->NumIvarInitializers)
1142 D->IvarInitializers = ReadGlobalOffset();
1145 void ASTDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
1147 D->setAtLoc(ReadSourceLocation());
1148 D->setPropertyDecl(ReadDeclAs<ObjCPropertyDecl>());
1149 D->PropertyIvarDecl = ReadDeclAs<ObjCIvarDecl>();
1150 D->IvarLoc = ReadSourceLocation();
1151 D->setGetterCXXConstructor(Record.readExpr());
1152 D->setSetterCXXAssignment(Record.readExpr());
1155 void ASTDeclReader::VisitFieldDecl(FieldDecl *FD) {
1156 VisitDeclaratorDecl(FD);
1157 FD->Mutable = Record.readInt();
1158 if (int BitWidthOrInitializer = Record.readInt()) {
1159 FD->InitStorage.setInt(
1160 static_cast<FieldDecl::InitStorageKind>(BitWidthOrInitializer - 1));
1161 if (FD->InitStorage.getInt() == FieldDecl::ISK_CapturedVLAType) {
1162 // Read captured variable length array.
1163 FD->InitStorage.setPointer(Record.readType().getAsOpaquePtr());
1165 FD->InitStorage.setPointer(Record.readExpr());
1168 if (!FD->getDeclName()) {
1169 if (FieldDecl *Tmpl = ReadDeclAs<FieldDecl>())
1170 Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
1175 void ASTDeclReader::VisitMSPropertyDecl(MSPropertyDecl *PD) {
1176 VisitDeclaratorDecl(PD);
1177 PD->GetterId = Record.getIdentifierInfo();
1178 PD->SetterId = Record.getIdentifierInfo();
1181 void ASTDeclReader::VisitIndirectFieldDecl(IndirectFieldDecl *FD) {
1184 FD->ChainingSize = Record.readInt();
1185 assert(FD->ChainingSize >= 2 && "Anonymous chaining must be >= 2");
1186 FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize];
1188 for (unsigned I = 0; I != FD->ChainingSize; ++I)
1189 FD->Chaining[I] = ReadDeclAs<NamedDecl>();
1194 ASTDeclReader::RedeclarableResult ASTDeclReader::VisitVarDeclImpl(VarDecl *VD) {
1195 RedeclarableResult Redecl = VisitRedeclarable(VD);
1196 VisitDeclaratorDecl(VD);
1198 VD->VarDeclBits.SClass = (StorageClass)Record.readInt();
1199 VD->VarDeclBits.TSCSpec = Record.readInt();
1200 VD->VarDeclBits.InitStyle = Record.readInt();
1201 if (!isa<ParmVarDecl>(VD)) {
1202 VD->NonParmVarDeclBits.IsThisDeclarationADemotedDefinition =
1204 VD->NonParmVarDeclBits.ExceptionVar = Record.readInt();
1205 VD->NonParmVarDeclBits.NRVOVariable = Record.readInt();
1206 VD->NonParmVarDeclBits.CXXForRangeDecl = Record.readInt();
1207 VD->NonParmVarDeclBits.ARCPseudoStrong = Record.readInt();
1208 VD->NonParmVarDeclBits.IsInline = Record.readInt();
1209 VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
1210 VD->NonParmVarDeclBits.IsConstexpr = Record.readInt();
1211 VD->NonParmVarDeclBits.IsInitCapture = Record.readInt();
1212 VD->NonParmVarDeclBits.PreviousDeclInSameBlockScope = Record.readInt();
1214 Linkage VarLinkage = Linkage(Record.readInt());
1215 VD->setCachedLinkage(VarLinkage);
1217 // Reconstruct the one piece of the IdentifierNamespace that we need.
1218 if (VD->getStorageClass() == SC_Extern && VarLinkage != NoLinkage &&
1219 VD->getLexicalDeclContext()->isFunctionOrMethod())
1220 VD->setLocalExternDecl();
1222 if (uint64_t Val = Record.readInt()) {
1223 VD->setInit(Record.readExpr());
1224 if (Val > 1) { // IsInitKnownICE = 1, IsInitNotICE = 2, IsInitICE = 3
1225 EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
1226 Eval->CheckedICE = true;
1227 Eval->IsICE = Val == 3;
1232 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
1234 switch ((VarKind)Record.readInt()) {
1235 case VarNotTemplate:
1236 // Only true variables (not parameters or implicit parameters) can be
1237 // merged; the other kinds are not really redeclarable at all.
1238 if (!isa<ParmVarDecl>(VD) && !isa<ImplicitParamDecl>(VD) &&
1239 !isa<VarTemplateSpecializationDecl>(VD))
1240 mergeRedeclarable(VD, Redecl);
1243 // Merged when we merge the template.
1244 VD->setDescribedVarTemplate(ReadDeclAs<VarTemplateDecl>());
1246 case StaticDataMemberSpecialization: { // HasMemberSpecializationInfo.
1247 VarDecl *Tmpl = ReadDeclAs<VarDecl>();
1248 TemplateSpecializationKind TSK =
1249 (TemplateSpecializationKind)Record.readInt();
1250 SourceLocation POI = ReadSourceLocation();
1251 Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
1252 mergeRedeclarable(VD, Redecl);
1260 void ASTDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) {
1264 void ASTDeclReader::VisitParmVarDecl(ParmVarDecl *PD) {
1266 unsigned isObjCMethodParam = Record.readInt();
1267 unsigned scopeDepth = Record.readInt();
1268 unsigned scopeIndex = Record.readInt();
1269 unsigned declQualifier = Record.readInt();
1270 if (isObjCMethodParam) {
1271 assert(scopeDepth == 0);
1272 PD->setObjCMethodScopeInfo(scopeIndex);
1273 PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier;
1275 PD->setScopeInfo(scopeDepth, scopeIndex);
1277 PD->ParmVarDeclBits.IsKNRPromoted = Record.readInt();
1278 PD->ParmVarDeclBits.HasInheritedDefaultArg = Record.readInt();
1279 if (Record.readInt()) // hasUninstantiatedDefaultArg.
1280 PD->setUninstantiatedDefaultArg(Record.readExpr());
1282 // FIXME: If this is a redeclaration of a function from another module, handle
1283 // inheritance of default arguments.
1286 void ASTDeclReader::VisitDecompositionDecl(DecompositionDecl *DD) {
1288 BindingDecl **BDs = DD->getTrailingObjects<BindingDecl*>();
1289 for (unsigned I = 0; I != DD->NumBindings; ++I)
1290 BDs[I] = ReadDeclAs<BindingDecl>();
1293 void ASTDeclReader::VisitBindingDecl(BindingDecl *BD) {
1295 BD->Binding = Record.readExpr();
1298 void ASTDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) {
1300 AD->setAsmString(cast<StringLiteral>(Record.readExpr()));
1301 AD->setRParenLoc(ReadSourceLocation());
1304 void ASTDeclReader::VisitBlockDecl(BlockDecl *BD) {
1306 BD->setBody(cast_or_null<CompoundStmt>(Record.readStmt()));
1307 BD->setSignatureAsWritten(GetTypeSourceInfo());
1308 unsigned NumParams = Record.readInt();
1309 SmallVector<ParmVarDecl *, 16> Params;
1310 Params.reserve(NumParams);
1311 for (unsigned I = 0; I != NumParams; ++I)
1312 Params.push_back(ReadDeclAs<ParmVarDecl>());
1313 BD->setParams(Params);
1315 BD->setIsVariadic(Record.readInt());
1316 BD->setBlockMissingReturnType(Record.readInt());
1317 BD->setIsConversionFromLambda(Record.readInt());
1319 bool capturesCXXThis = Record.readInt();
1320 unsigned numCaptures = Record.readInt();
1321 SmallVector<BlockDecl::Capture, 16> captures;
1322 captures.reserve(numCaptures);
1323 for (unsigned i = 0; i != numCaptures; ++i) {
1324 VarDecl *decl = ReadDeclAs<VarDecl>();
1325 unsigned flags = Record.readInt();
1326 bool byRef = (flags & 1);
1327 bool nested = (flags & 2);
1328 Expr *copyExpr = ((flags & 4) ? Record.readExpr() : nullptr);
1330 captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr));
1332 BD->setCaptures(Reader.getContext(), captures, capturesCXXThis);
1335 void ASTDeclReader::VisitCapturedDecl(CapturedDecl *CD) {
1337 unsigned ContextParamPos = Record.readInt();
1338 CD->setNothrow(Record.readInt() != 0);
1339 // Body is set by VisitCapturedStmt.
1340 for (unsigned I = 0; I < CD->NumParams; ++I) {
1341 if (I != ContextParamPos)
1342 CD->setParam(I, ReadDeclAs<ImplicitParamDecl>());
1344 CD->setContextParam(I, ReadDeclAs<ImplicitParamDecl>());
1348 void ASTDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
1350 D->setLanguage((LinkageSpecDecl::LanguageIDs)Record.readInt());
1351 D->setExternLoc(ReadSourceLocation());
1352 D->setRBraceLoc(ReadSourceLocation());
1355 void ASTDeclReader::VisitExportDecl(ExportDecl *D) {
1357 D->RBraceLoc = ReadSourceLocation();
1360 void ASTDeclReader::VisitLabelDecl(LabelDecl *D) {
1362 D->setLocStart(ReadSourceLocation());
1365 void ASTDeclReader::VisitNamespaceDecl(NamespaceDecl *D) {
1366 RedeclarableResult Redecl = VisitRedeclarable(D);
1368 D->setInline(Record.readInt());
1369 D->LocStart = ReadSourceLocation();
1370 D->RBraceLoc = ReadSourceLocation();
1372 // Defer loading the anonymous namespace until we've finished merging
1373 // this namespace; loading it might load a later declaration of the
1374 // same namespace, and we have an invariant that older declarations
1375 // get merged before newer ones try to merge.
1376 GlobalDeclID AnonNamespace = 0;
1377 if (Redecl.getFirstID() == ThisDeclID) {
1378 AnonNamespace = ReadDeclID();
1380 // Link this namespace back to the first declaration, which has already
1381 // been deserialized.
1382 D->AnonOrFirstNamespaceAndInline.setPointer(D->getFirstDecl());
1385 mergeRedeclarable(D, Redecl);
1387 if (AnonNamespace) {
1388 // Each module has its own anonymous namespace, which is disjoint from
1389 // any other module's anonymous namespaces, so don't attach the anonymous
1390 // namespace at all.
1391 NamespaceDecl *Anon = cast<NamespaceDecl>(Reader.GetDecl(AnonNamespace));
1392 if (!Record.isModule())
1393 D->setAnonymousNamespace(Anon);
1397 void ASTDeclReader::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
1398 RedeclarableResult Redecl = VisitRedeclarable(D);
1400 D->NamespaceLoc = ReadSourceLocation();
1401 D->IdentLoc = ReadSourceLocation();
1402 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1403 D->Namespace = ReadDeclAs<NamedDecl>();
1404 mergeRedeclarable(D, Redecl);
1407 void ASTDeclReader::VisitUsingDecl(UsingDecl *D) {
1409 D->setUsingLoc(ReadSourceLocation());
1410 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1411 ReadDeclarationNameLoc(D->DNLoc, D->getDeclName());
1412 D->FirstUsingShadow.setPointer(ReadDeclAs<UsingShadowDecl>());
1413 D->setTypename(Record.readInt());
1414 if (NamedDecl *Pattern = ReadDeclAs<NamedDecl>())
1415 Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
1419 void ASTDeclReader::VisitUsingPackDecl(UsingPackDecl *D) {
1421 D->InstantiatedFrom = ReadDeclAs<NamedDecl>();
1422 NamedDecl **Expansions = D->getTrailingObjects<NamedDecl*>();
1423 for (unsigned I = 0; I != D->NumExpansions; ++I)
1424 Expansions[I] = ReadDeclAs<NamedDecl>();
1428 void ASTDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) {
1429 RedeclarableResult Redecl = VisitRedeclarable(D);
1431 D->setTargetDecl(ReadDeclAs<NamedDecl>());
1432 D->UsingOrNextShadow = ReadDeclAs<NamedDecl>();
1433 UsingShadowDecl *Pattern = ReadDeclAs<UsingShadowDecl>();
1435 Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
1436 mergeRedeclarable(D, Redecl);
1439 void ASTDeclReader::VisitConstructorUsingShadowDecl(
1440 ConstructorUsingShadowDecl *D) {
1441 VisitUsingShadowDecl(D);
1442 D->NominatedBaseClassShadowDecl = ReadDeclAs<ConstructorUsingShadowDecl>();
1443 D->ConstructedBaseClassShadowDecl = ReadDeclAs<ConstructorUsingShadowDecl>();
1444 D->IsVirtual = Record.readInt();
1447 void ASTDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
1449 D->UsingLoc = ReadSourceLocation();
1450 D->NamespaceLoc = ReadSourceLocation();
1451 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1452 D->NominatedNamespace = ReadDeclAs<NamedDecl>();
1453 D->CommonAncestor = ReadDeclAs<DeclContext>();
1456 void ASTDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
1458 D->setUsingLoc(ReadSourceLocation());
1459 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1460 ReadDeclarationNameLoc(D->DNLoc, D->getDeclName());
1461 D->EllipsisLoc = ReadSourceLocation();
1465 void ASTDeclReader::VisitUnresolvedUsingTypenameDecl(
1466 UnresolvedUsingTypenameDecl *D) {
1468 D->TypenameLocation = ReadSourceLocation();
1469 D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1470 D->EllipsisLoc = ReadSourceLocation();
1474 void ASTDeclReader::ReadCXXDefinitionData(
1475 struct CXXRecordDecl::DefinitionData &Data) {
1476 // Note: the caller has deserialized the IsLambda bit already.
1477 Data.UserDeclaredConstructor = Record.readInt();
1478 Data.UserDeclaredSpecialMembers = Record.readInt();
1479 Data.Aggregate = Record.readInt();
1480 Data.PlainOldData = Record.readInt();
1481 Data.Empty = Record.readInt();
1482 Data.Polymorphic = Record.readInt();
1483 Data.Abstract = Record.readInt();
1484 Data.IsStandardLayout = Record.readInt();
1485 Data.HasNoNonEmptyBases = Record.readInt();
1486 Data.HasPrivateFields = Record.readInt();
1487 Data.HasProtectedFields = Record.readInt();
1488 Data.HasPublicFields = Record.readInt();
1489 Data.HasMutableFields = Record.readInt();
1490 Data.HasVariantMembers = Record.readInt();
1491 Data.HasOnlyCMembers = Record.readInt();
1492 Data.HasInClassInitializer = Record.readInt();
1493 Data.HasUninitializedReferenceMember = Record.readInt();
1494 Data.HasUninitializedFields = Record.readInt();
1495 Data.HasInheritedConstructor = Record.readInt();
1496 Data.HasInheritedAssignment = Record.readInt();
1497 Data.NeedOverloadResolutionForMoveConstructor = Record.readInt();
1498 Data.NeedOverloadResolutionForMoveAssignment = Record.readInt();
1499 Data.NeedOverloadResolutionForDestructor = Record.readInt();
1500 Data.DefaultedMoveConstructorIsDeleted = Record.readInt();
1501 Data.DefaultedMoveAssignmentIsDeleted = Record.readInt();
1502 Data.DefaultedDestructorIsDeleted = Record.readInt();
1503 Data.HasTrivialSpecialMembers = Record.readInt();
1504 Data.DeclaredNonTrivialSpecialMembers = Record.readInt();
1505 Data.HasIrrelevantDestructor = Record.readInt();
1506 Data.HasConstexprNonCopyMoveConstructor = Record.readInt();
1507 Data.HasDefaultedDefaultConstructor = Record.readInt();
1508 Data.DefaultedDefaultConstructorIsConstexpr = Record.readInt();
1509 Data.HasConstexprDefaultConstructor = Record.readInt();
1510 Data.HasNonLiteralTypeFieldsOrBases = Record.readInt();
1511 Data.ComputedVisibleConversions = Record.readInt();
1512 Data.UserProvidedDefaultConstructor = Record.readInt();
1513 Data.DeclaredSpecialMembers = Record.readInt();
1514 Data.ImplicitCopyConstructorHasConstParam = Record.readInt();
1515 Data.ImplicitCopyAssignmentHasConstParam = Record.readInt();
1516 Data.HasDeclaredCopyConstructorWithConstParam = Record.readInt();
1517 Data.HasDeclaredCopyAssignmentWithConstParam = Record.readInt();
1519 Data.NumBases = Record.readInt();
1521 Data.Bases = ReadGlobalOffset();
1522 Data.NumVBases = Record.readInt();
1524 Data.VBases = ReadGlobalOffset();
1526 Record.readUnresolvedSet(Data.Conversions);
1527 Record.readUnresolvedSet(Data.VisibleConversions);
1528 assert(Data.Definition && "Data.Definition should be already set!");
1529 Data.FirstFriend = ReadDeclID();
1531 if (Data.IsLambda) {
1532 typedef LambdaCapture Capture;
1533 CXXRecordDecl::LambdaDefinitionData &Lambda
1534 = static_cast<CXXRecordDecl::LambdaDefinitionData &>(Data);
1535 Lambda.Dependent = Record.readInt();
1536 Lambda.IsGenericLambda = Record.readInt();
1537 Lambda.CaptureDefault = Record.readInt();
1538 Lambda.NumCaptures = Record.readInt();
1539 Lambda.NumExplicitCaptures = Record.readInt();
1540 Lambda.ManglingNumber = Record.readInt();
1541 Lambda.ContextDecl = ReadDeclID();
1543 = (Capture*)Reader.Context.Allocate(sizeof(Capture)*Lambda.NumCaptures);
1544 Capture *ToCapture = Lambda.Captures;
1545 Lambda.MethodTyInfo = GetTypeSourceInfo();
1546 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
1547 SourceLocation Loc = ReadSourceLocation();
1548 bool IsImplicit = Record.readInt();
1549 LambdaCaptureKind Kind = static_cast<LambdaCaptureKind>(Record.readInt());
1554 *ToCapture++ = Capture(Loc, IsImplicit, Kind, nullptr,SourceLocation());
1558 VarDecl *Var = ReadDeclAs<VarDecl>();
1559 SourceLocation EllipsisLoc = ReadSourceLocation();
1560 *ToCapture++ = Capture(Loc, IsImplicit, Kind, Var, EllipsisLoc);
1567 void ASTDeclReader::MergeDefinitionData(
1568 CXXRecordDecl *D, struct CXXRecordDecl::DefinitionData &&MergeDD) {
1569 assert(D->DefinitionData &&
1570 "merging class definition into non-definition");
1571 auto &DD = *D->DefinitionData;
1573 if (DD.Definition != MergeDD.Definition) {
1574 // Track that we merged the definitions.
1575 Reader.MergedDeclContexts.insert(std::make_pair(MergeDD.Definition,
1577 Reader.PendingDefinitions.erase(MergeDD.Definition);
1578 MergeDD.Definition->IsCompleteDefinition = false;
1579 Reader.mergeDefinitionVisibility(DD.Definition, MergeDD.Definition);
1580 assert(Reader.Lookups.find(MergeDD.Definition) == Reader.Lookups.end() &&
1581 "already loaded pending lookups for merged definition");
1584 auto PFDI = Reader.PendingFakeDefinitionData.find(&DD);
1585 if (PFDI != Reader.PendingFakeDefinitionData.end() &&
1586 PFDI->second == ASTReader::PendingFakeDefinitionKind::Fake) {
1587 // We faked up this definition data because we found a class for which we'd
1588 // not yet loaded the definition. Replace it with the real thing now.
1589 assert(!DD.IsLambda && !MergeDD.IsLambda && "faked up lambda definition?");
1590 PFDI->second = ASTReader::PendingFakeDefinitionKind::FakeLoaded;
1592 // Don't change which declaration is the definition; that is required
1593 // to be invariant once we select it.
1594 auto *Def = DD.Definition;
1595 DD = std::move(MergeDD);
1596 DD.Definition = Def;
1600 // FIXME: Move this out into a .def file?
1601 bool DetectedOdrViolation = false;
1602 #define OR_FIELD(Field) DD.Field |= MergeDD.Field;
1603 #define MATCH_FIELD(Field) \
1604 DetectedOdrViolation |= DD.Field != MergeDD.Field; \
1606 MATCH_FIELD(UserDeclaredConstructor)
1607 MATCH_FIELD(UserDeclaredSpecialMembers)
1608 MATCH_FIELD(Aggregate)
1609 MATCH_FIELD(PlainOldData)
1611 MATCH_FIELD(Polymorphic)
1612 MATCH_FIELD(Abstract)
1613 MATCH_FIELD(IsStandardLayout)
1614 MATCH_FIELD(HasNoNonEmptyBases)
1615 MATCH_FIELD(HasPrivateFields)
1616 MATCH_FIELD(HasProtectedFields)
1617 MATCH_FIELD(HasPublicFields)
1618 MATCH_FIELD(HasMutableFields)
1619 MATCH_FIELD(HasVariantMembers)
1620 MATCH_FIELD(HasOnlyCMembers)
1621 MATCH_FIELD(HasInClassInitializer)
1622 MATCH_FIELD(HasUninitializedReferenceMember)
1623 MATCH_FIELD(HasUninitializedFields)
1624 MATCH_FIELD(HasInheritedConstructor)
1625 MATCH_FIELD(HasInheritedAssignment)
1626 MATCH_FIELD(NeedOverloadResolutionForMoveConstructor)
1627 MATCH_FIELD(NeedOverloadResolutionForMoveAssignment)
1628 MATCH_FIELD(NeedOverloadResolutionForDestructor)
1629 MATCH_FIELD(DefaultedMoveConstructorIsDeleted)
1630 MATCH_FIELD(DefaultedMoveAssignmentIsDeleted)
1631 MATCH_FIELD(DefaultedDestructorIsDeleted)
1632 OR_FIELD(HasTrivialSpecialMembers)
1633 OR_FIELD(DeclaredNonTrivialSpecialMembers)
1634 MATCH_FIELD(HasIrrelevantDestructor)
1635 OR_FIELD(HasConstexprNonCopyMoveConstructor)
1636 OR_FIELD(HasDefaultedDefaultConstructor)
1637 MATCH_FIELD(DefaultedDefaultConstructorIsConstexpr)
1638 OR_FIELD(HasConstexprDefaultConstructor)
1639 MATCH_FIELD(HasNonLiteralTypeFieldsOrBases)
1640 // ComputedVisibleConversions is handled below.
1641 MATCH_FIELD(UserProvidedDefaultConstructor)
1642 OR_FIELD(DeclaredSpecialMembers)
1643 MATCH_FIELD(ImplicitCopyConstructorHasConstParam)
1644 MATCH_FIELD(ImplicitCopyAssignmentHasConstParam)
1645 OR_FIELD(HasDeclaredCopyConstructorWithConstParam)
1646 OR_FIELD(HasDeclaredCopyAssignmentWithConstParam)
1647 MATCH_FIELD(IsLambda)
1651 if (DD.NumBases != MergeDD.NumBases || DD.NumVBases != MergeDD.NumVBases)
1652 DetectedOdrViolation = true;
1653 // FIXME: Issue a diagnostic if the base classes don't match when we come
1654 // to lazily load them.
1656 // FIXME: Issue a diagnostic if the list of conversion functions doesn't
1657 // match when we come to lazily load them.
1658 if (MergeDD.ComputedVisibleConversions && !DD.ComputedVisibleConversions) {
1659 DD.VisibleConversions = std::move(MergeDD.VisibleConversions);
1660 DD.ComputedVisibleConversions = true;
1663 // FIXME: Issue a diagnostic if FirstFriend doesn't match when we come to
1667 // FIXME: ODR-checking for merging lambdas (this happens, for instance,
1668 // when they occur within the body of a function template specialization).
1671 if (DetectedOdrViolation)
1672 Reader.PendingOdrMergeFailures[DD.Definition].push_back(MergeDD.Definition);
1675 void ASTDeclReader::ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update) {
1676 struct CXXRecordDecl::DefinitionData *DD;
1677 ASTContext &C = Reader.getContext();
1679 // Determine whether this is a lambda closure type, so that we can
1680 // allocate the appropriate DefinitionData structure.
1681 bool IsLambda = Record.readInt();
1683 DD = new (C) CXXRecordDecl::LambdaDefinitionData(D, nullptr, false, false,
1686 DD = new (C) struct CXXRecordDecl::DefinitionData(D);
1688 ReadCXXDefinitionData(*DD);
1690 // We might already have a definition for this record. This can happen either
1691 // because we're reading an update record, or because we've already done some
1692 // merging. Either way, just merge into it.
1693 CXXRecordDecl *Canon = D->getCanonicalDecl();
1694 if (Canon->DefinitionData) {
1695 MergeDefinitionData(Canon, std::move(*DD));
1696 D->DefinitionData = Canon->DefinitionData;
1700 // Mark this declaration as being a definition.
1701 D->IsCompleteDefinition = true;
1702 D->DefinitionData = DD;
1704 // If this is not the first declaration or is an update record, we can have
1705 // other redeclarations already. Make a note that we need to propagate the
1706 // DefinitionData pointer onto them.
1707 if (Update || Canon != D) {
1708 Canon->DefinitionData = D->DefinitionData;
1709 Reader.PendingDefinitions.insert(D);
1713 ASTDeclReader::RedeclarableResult
1714 ASTDeclReader::VisitCXXRecordDeclImpl(CXXRecordDecl *D) {
1715 RedeclarableResult Redecl = VisitRecordDeclImpl(D);
1717 ASTContext &C = Reader.getContext();
1720 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1722 switch ((CXXRecKind)Record.readInt()) {
1723 case CXXRecNotTemplate:
1724 // Merged when we merge the folding set entry in the primary template.
1725 if (!isa<ClassTemplateSpecializationDecl>(D))
1726 mergeRedeclarable(D, Redecl);
1728 case CXXRecTemplate: {
1729 // Merged when we merge the template.
1730 ClassTemplateDecl *Template = ReadDeclAs<ClassTemplateDecl>();
1731 D->TemplateOrInstantiation = Template;
1732 if (!Template->getTemplatedDecl()) {
1733 // We've not actually loaded the ClassTemplateDecl yet, because we're
1734 // currently being loaded as its pattern. Rely on it to set up our
1735 // TypeForDecl (see VisitClassTemplateDecl).
1737 // Beware: we do not yet know our canonical declaration, and may still
1738 // get merged once the surrounding class template has got off the ground.
1739 TypeIDForTypeDecl = 0;
1743 case CXXRecMemberSpecialization: {
1744 CXXRecordDecl *RD = ReadDeclAs<CXXRecordDecl>();
1745 TemplateSpecializationKind TSK =
1746 (TemplateSpecializationKind)Record.readInt();
1747 SourceLocation POI = ReadSourceLocation();
1748 MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
1749 MSI->setPointOfInstantiation(POI);
1750 D->TemplateOrInstantiation = MSI;
1751 mergeRedeclarable(D, Redecl);
1756 bool WasDefinition = Record.readInt();
1758 ReadCXXRecordDefinition(D, /*Update*/false);
1760 // Propagate DefinitionData pointer from the canonical declaration.
1761 D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
1763 // Lazily load the key function to avoid deserializing every method so we can
1765 if (WasDefinition) {
1766 DeclID KeyFn = ReadDeclID();
1767 if (KeyFn && D->IsCompleteDefinition)
1768 // FIXME: This is wrong for the ARM ABI, where some other module may have
1769 // made this function no longer be a key function. We need an update
1770 // record or similar for that case.
1771 C.KeyFunctions[D] = KeyFn;
1777 void ASTDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) {
1778 VisitFunctionDecl(D);
1780 unsigned NumOverridenMethods = Record.readInt();
1781 if (D->isCanonicalDecl()) {
1782 while (NumOverridenMethods--) {
1783 // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
1784 // MD may be initializing.
1785 if (CXXMethodDecl *MD = ReadDeclAs<CXXMethodDecl>())
1786 Reader.getContext().addOverriddenMethod(D, MD->getCanonicalDecl());
1789 // We don't care about which declarations this used to override; we get
1790 // the relevant information from the canonical declaration.
1791 Record.skipInts(NumOverridenMethods);
1795 void ASTDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
1796 // We need the inherited constructor information to merge the declaration,
1797 // so we have to read it before we call VisitCXXMethodDecl.
1798 if (D->isInheritingConstructor()) {
1799 auto *Shadow = ReadDeclAs<ConstructorUsingShadowDecl>();
1800 auto *Ctor = ReadDeclAs<CXXConstructorDecl>();
1801 *D->getTrailingObjects<InheritedConstructor>() =
1802 InheritedConstructor(Shadow, Ctor);
1805 VisitCXXMethodDecl(D);
1807 D->IsExplicitSpecified = Record.readInt();
1810 void ASTDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
1811 VisitCXXMethodDecl(D);
1813 if (auto *OperatorDelete = ReadDeclAs<FunctionDecl>()) {
1814 auto *Canon = cast<CXXDestructorDecl>(D->getCanonicalDecl());
1815 // FIXME: Check consistency if we have an old and new operator delete.
1816 if (!Canon->OperatorDelete)
1817 Canon->OperatorDelete = OperatorDelete;
1821 void ASTDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) {
1822 VisitCXXMethodDecl(D);
1823 D->IsExplicitSpecified = Record.readInt();
1826 void ASTDeclReader::VisitImportDecl(ImportDecl *D) {
1828 D->ImportedAndComplete.setPointer(readModule());
1829 D->ImportedAndComplete.setInt(Record.readInt());
1830 SourceLocation *StoredLocs = D->getTrailingObjects<SourceLocation>();
1831 for (unsigned I = 0, N = Record.back(); I != N; ++I)
1832 StoredLocs[I] = ReadSourceLocation();
1833 (void)Record.readInt(); // The number of stored source locations.
1836 void ASTDeclReader::VisitAccessSpecDecl(AccessSpecDecl *D) {
1838 D->setColonLoc(ReadSourceLocation());
1841 void ASTDeclReader::VisitFriendDecl(FriendDecl *D) {
1843 if (Record.readInt()) // hasFriendDecl
1844 D->Friend = ReadDeclAs<NamedDecl>();
1846 D->Friend = GetTypeSourceInfo();
1847 for (unsigned i = 0; i != D->NumTPLists; ++i)
1848 D->getTrailingObjects<TemplateParameterList *>()[i] =
1849 Record.readTemplateParameterList();
1850 D->NextFriend = ReadDeclID();
1851 D->UnsupportedFriend = (Record.readInt() != 0);
1852 D->FriendLoc = ReadSourceLocation();
1855 void ASTDeclReader::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
1857 unsigned NumParams = Record.readInt();
1858 D->NumParams = NumParams;
1859 D->Params = new TemplateParameterList*[NumParams];
1860 for (unsigned i = 0; i != NumParams; ++i)
1861 D->Params[i] = Record.readTemplateParameterList();
1862 if (Record.readInt()) // HasFriendDecl
1863 D->Friend = ReadDeclAs<NamedDecl>();
1865 D->Friend = GetTypeSourceInfo();
1866 D->FriendLoc = ReadSourceLocation();
1869 DeclID ASTDeclReader::VisitTemplateDecl(TemplateDecl *D) {
1872 DeclID PatternID = ReadDeclID();
1873 NamedDecl *TemplatedDecl = cast_or_null<NamedDecl>(Reader.GetDecl(PatternID));
1874 TemplateParameterList *TemplateParams = Record.readTemplateParameterList();
1875 D->init(TemplatedDecl, TemplateParams);
1880 ASTDeclReader::RedeclarableResult
1881 ASTDeclReader::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
1882 RedeclarableResult Redecl = VisitRedeclarable(D);
1884 // Make sure we've allocated the Common pointer first. We do this before
1885 // VisitTemplateDecl so that getCommonPtr() can be used during initialization.
1886 RedeclarableTemplateDecl *CanonD = D->getCanonicalDecl();
1887 if (!CanonD->Common) {
1888 CanonD->Common = CanonD->newCommon(Reader.getContext());
1889 Reader.PendingDefinitions.insert(CanonD);
1891 D->Common = CanonD->Common;
1893 // If this is the first declaration of the template, fill in the information
1894 // for the 'common' pointer.
1895 if (ThisDeclID == Redecl.getFirstID()) {
1896 if (RedeclarableTemplateDecl *RTD
1897 = ReadDeclAs<RedeclarableTemplateDecl>()) {
1898 assert(RTD->getKind() == D->getKind() &&
1899 "InstantiatedFromMemberTemplate kind mismatch");
1900 D->setInstantiatedFromMemberTemplate(RTD);
1901 if (Record.readInt())
1902 D->setMemberSpecialization();
1906 DeclID PatternID = VisitTemplateDecl(D);
1907 D->IdentifierNamespace = Record.readInt();
1909 mergeRedeclarable(D, Redecl, PatternID);
1911 // If we merged the template with a prior declaration chain, merge the common
1913 // FIXME: Actually merge here, don't just overwrite.
1914 D->Common = D->getCanonicalDecl()->Common;
1919 static DeclID *newDeclIDList(ASTContext &Context, DeclID *Old,
1920 SmallVectorImpl<DeclID> &IDs) {
1921 assert(!IDs.empty() && "no IDs to add to list");
1923 IDs.insert(IDs.end(), Old + 1, Old + 1 + Old[0]);
1924 std::sort(IDs.begin(), IDs.end());
1925 IDs.erase(std::unique(IDs.begin(), IDs.end()), IDs.end());
1928 auto *Result = new (Context) DeclID[1 + IDs.size()];
1929 *Result = IDs.size();
1930 std::copy(IDs.begin(), IDs.end(), Result + 1);
1934 void ASTDeclReader::VisitClassTemplateDecl(ClassTemplateDecl *D) {
1935 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
1937 if (ThisDeclID == Redecl.getFirstID()) {
1938 // This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of
1939 // the specializations.
1940 SmallVector<serialization::DeclID, 32> SpecIDs;
1941 ReadDeclIDList(SpecIDs);
1943 if (!SpecIDs.empty()) {
1944 auto *CommonPtr = D->getCommonPtr();
1945 CommonPtr->LazySpecializations = newDeclIDList(
1946 Reader.getContext(), CommonPtr->LazySpecializations, SpecIDs);
1950 if (D->getTemplatedDecl()->TemplateOrInstantiation) {
1951 // We were loaded before our templated declaration was. We've not set up
1952 // its corresponding type yet (see VisitCXXRecordDeclImpl), so reconstruct
1954 Reader.Context.getInjectedClassNameType(
1955 D->getTemplatedDecl(), D->getInjectedClassNameSpecialization());
1959 void ASTDeclReader::VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D) {
1960 llvm_unreachable("BuiltinTemplates are not serialized");
1963 /// TODO: Unify with ClassTemplateDecl version?
1964 /// May require unifying ClassTemplateDecl and
1965 /// VarTemplateDecl beyond TemplateDecl...
1966 void ASTDeclReader::VisitVarTemplateDecl(VarTemplateDecl *D) {
1967 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
1969 if (ThisDeclID == Redecl.getFirstID()) {
1970 // This VarTemplateDecl owns a CommonPtr; read it to keep track of all of
1971 // the specializations.
1972 SmallVector<serialization::DeclID, 32> SpecIDs;
1973 ReadDeclIDList(SpecIDs);
1975 if (!SpecIDs.empty()) {
1976 auto *CommonPtr = D->getCommonPtr();
1977 CommonPtr->LazySpecializations = newDeclIDList(
1978 Reader.getContext(), CommonPtr->LazySpecializations, SpecIDs);
1983 ASTDeclReader::RedeclarableResult
1984 ASTDeclReader::VisitClassTemplateSpecializationDeclImpl(
1985 ClassTemplateSpecializationDecl *D) {
1986 RedeclarableResult Redecl = VisitCXXRecordDeclImpl(D);
1988 ASTContext &C = Reader.getContext();
1989 if (Decl *InstD = ReadDecl()) {
1990 if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
1991 D->SpecializedTemplate = CTD;
1993 SmallVector<TemplateArgument, 8> TemplArgs;
1994 Record.readTemplateArgumentList(TemplArgs);
1995 TemplateArgumentList *ArgList
1996 = TemplateArgumentList::CreateCopy(C, TemplArgs);
1997 ClassTemplateSpecializationDecl::SpecializedPartialSpecialization *PS
1998 = new (C) ClassTemplateSpecializationDecl::
1999 SpecializedPartialSpecialization();
2000 PS->PartialSpecialization
2001 = cast<ClassTemplatePartialSpecializationDecl>(InstD);
2002 PS->TemplateArgs = ArgList;
2003 D->SpecializedTemplate = PS;
2007 SmallVector<TemplateArgument, 8> TemplArgs;
2008 Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2009 D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2010 D->PointOfInstantiation = ReadSourceLocation();
2011 D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2013 bool writtenAsCanonicalDecl = Record.readInt();
2014 if (writtenAsCanonicalDecl) {
2015 ClassTemplateDecl *CanonPattern = ReadDeclAs<ClassTemplateDecl>();
2016 if (D->isCanonicalDecl()) { // It's kept in the folding set.
2017 // Set this as, or find, the canonical declaration for this specialization
2018 ClassTemplateSpecializationDecl *CanonSpec;
2019 if (ClassTemplatePartialSpecializationDecl *Partial =
2020 dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
2021 CanonSpec = CanonPattern->getCommonPtr()->PartialSpecializations
2022 .GetOrInsertNode(Partial);
2025 CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2027 // If there was already a canonical specialization, merge into it.
2028 if (CanonSpec != D) {
2029 mergeRedeclarable<TagDecl>(D, CanonSpec, Redecl);
2031 // This declaration might be a definition. Merge with any existing
2033 if (auto *DDD = D->DefinitionData) {
2034 if (CanonSpec->DefinitionData)
2035 MergeDefinitionData(CanonSpec, std::move(*DDD));
2037 CanonSpec->DefinitionData = D->DefinitionData;
2039 D->DefinitionData = CanonSpec->DefinitionData;
2045 if (TypeSourceInfo *TyInfo = GetTypeSourceInfo()) {
2046 ClassTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo
2047 = new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
2048 ExplicitInfo->TypeAsWritten = TyInfo;
2049 ExplicitInfo->ExternLoc = ReadSourceLocation();
2050 ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation();
2051 D->ExplicitInfo = ExplicitInfo;
2057 void ASTDeclReader::VisitClassTemplatePartialSpecializationDecl(
2058 ClassTemplatePartialSpecializationDecl *D) {
2059 RedeclarableResult Redecl = VisitClassTemplateSpecializationDeclImpl(D);
2061 D->TemplateParams = Record.readTemplateParameterList();
2062 D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2064 // These are read/set from/to the first declaration.
2065 if (ThisDeclID == Redecl.getFirstID()) {
2066 D->InstantiatedFromMember.setPointer(
2067 ReadDeclAs<ClassTemplatePartialSpecializationDecl>());
2068 D->InstantiatedFromMember.setInt(Record.readInt());
2072 void ASTDeclReader::VisitClassScopeFunctionSpecializationDecl(
2073 ClassScopeFunctionSpecializationDecl *D) {
2075 D->Specialization = ReadDeclAs<CXXMethodDecl>();
2078 void ASTDeclReader::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
2079 RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2081 if (ThisDeclID == Redecl.getFirstID()) {
2082 // This FunctionTemplateDecl owns a CommonPtr; read it.
2083 SmallVector<serialization::DeclID, 32> SpecIDs;
2084 ReadDeclIDList(SpecIDs);
2086 if (!SpecIDs.empty()) {
2087 auto *CommonPtr = D->getCommonPtr();
2088 CommonPtr->LazySpecializations = newDeclIDList(
2089 Reader.getContext(), CommonPtr->LazySpecializations, SpecIDs);
2094 /// TODO: Unify with ClassTemplateSpecializationDecl version?
2095 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
2096 /// VarTemplate(Partial)SpecializationDecl with a new data
2097 /// structure Template(Partial)SpecializationDecl, and
2098 /// using Template(Partial)SpecializationDecl as input type.
2099 ASTDeclReader::RedeclarableResult
2100 ASTDeclReader::VisitVarTemplateSpecializationDeclImpl(
2101 VarTemplateSpecializationDecl *D) {
2102 RedeclarableResult Redecl = VisitVarDeclImpl(D);
2104 ASTContext &C = Reader.getContext();
2105 if (Decl *InstD = ReadDecl()) {
2106 if (VarTemplateDecl *VTD = dyn_cast<VarTemplateDecl>(InstD)) {
2107 D->SpecializedTemplate = VTD;
2109 SmallVector<TemplateArgument, 8> TemplArgs;
2110 Record.readTemplateArgumentList(TemplArgs);
2111 TemplateArgumentList *ArgList = TemplateArgumentList::CreateCopy(
2113 VarTemplateSpecializationDecl::SpecializedPartialSpecialization *PS =
2115 VarTemplateSpecializationDecl::SpecializedPartialSpecialization();
2116 PS->PartialSpecialization =
2117 cast<VarTemplatePartialSpecializationDecl>(InstD);
2118 PS->TemplateArgs = ArgList;
2119 D->SpecializedTemplate = PS;
2124 if (TypeSourceInfo *TyInfo = GetTypeSourceInfo()) {
2125 VarTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo =
2126 new (C) VarTemplateSpecializationDecl::ExplicitSpecializationInfo;
2127 ExplicitInfo->TypeAsWritten = TyInfo;
2128 ExplicitInfo->ExternLoc = ReadSourceLocation();
2129 ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation();
2130 D->ExplicitInfo = ExplicitInfo;
2133 SmallVector<TemplateArgument, 8> TemplArgs;
2134 Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2135 D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2136 D->PointOfInstantiation = ReadSourceLocation();
2137 D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2139 bool writtenAsCanonicalDecl = Record.readInt();
2140 if (writtenAsCanonicalDecl) {
2141 VarTemplateDecl *CanonPattern = ReadDeclAs<VarTemplateDecl>();
2142 if (D->isCanonicalDecl()) { // It's kept in the folding set.
2143 // FIXME: If it's already present, merge it.
2144 if (VarTemplatePartialSpecializationDecl *Partial =
2145 dyn_cast<VarTemplatePartialSpecializationDecl>(D)) {
2146 CanonPattern->getCommonPtr()->PartialSpecializations
2147 .GetOrInsertNode(Partial);
2149 CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2157 /// TODO: Unify with ClassTemplatePartialSpecializationDecl version?
2158 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
2159 /// VarTemplate(Partial)SpecializationDecl with a new data
2160 /// structure Template(Partial)SpecializationDecl, and
2161 /// using Template(Partial)SpecializationDecl as input type.
2162 void ASTDeclReader::VisitVarTemplatePartialSpecializationDecl(
2163 VarTemplatePartialSpecializationDecl *D) {
2164 RedeclarableResult Redecl = VisitVarTemplateSpecializationDeclImpl(D);
2166 D->TemplateParams = Record.readTemplateParameterList();
2167 D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2169 // These are read/set from/to the first declaration.
2170 if (ThisDeclID == Redecl.getFirstID()) {
2171 D->InstantiatedFromMember.setPointer(
2172 ReadDeclAs<VarTemplatePartialSpecializationDecl>());
2173 D->InstantiatedFromMember.setInt(Record.readInt());
2177 void ASTDeclReader::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
2180 D->setDeclaredWithTypename(Record.readInt());
2182 if (Record.readInt())
2183 D->setDefaultArgument(GetTypeSourceInfo());
2186 void ASTDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
2187 VisitDeclaratorDecl(D);
2188 // TemplateParmPosition.
2189 D->setDepth(Record.readInt());
2190 D->setPosition(Record.readInt());
2191 if (D->isExpandedParameterPack()) {
2192 auto TypesAndInfos =
2193 D->getTrailingObjects<std::pair<QualType, TypeSourceInfo *>>();
2194 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
2195 new (&TypesAndInfos[I].first) QualType(Record.readType());
2196 TypesAndInfos[I].second = GetTypeSourceInfo();
2199 // Rest of NonTypeTemplateParmDecl.
2200 D->ParameterPack = Record.readInt();
2201 if (Record.readInt())
2202 D->setDefaultArgument(Record.readExpr());
2206 void ASTDeclReader::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
2207 VisitTemplateDecl(D);
2208 // TemplateParmPosition.
2209 D->setDepth(Record.readInt());
2210 D->setPosition(Record.readInt());
2211 if (D->isExpandedParameterPack()) {
2212 TemplateParameterList **Data =
2213 D->getTrailingObjects<TemplateParameterList *>();
2214 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
2216 Data[I] = Record.readTemplateParameterList();
2218 // Rest of TemplateTemplateParmDecl.
2219 D->ParameterPack = Record.readInt();
2220 if (Record.readInt())
2221 D->setDefaultArgument(Reader.getContext(),
2222 Record.readTemplateArgumentLoc());
2226 void ASTDeclReader::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
2227 VisitRedeclarableTemplateDecl(D);
2230 void ASTDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) {
2232 D->AssertExprAndFailed.setPointer(Record.readExpr());
2233 D->AssertExprAndFailed.setInt(Record.readInt());
2234 D->Message = cast_or_null<StringLiteral>(Record.readExpr());
2235 D->RParenLoc = ReadSourceLocation();
2238 void ASTDeclReader::VisitEmptyDecl(EmptyDecl *D) {
2242 std::pair<uint64_t, uint64_t>
2243 ASTDeclReader::VisitDeclContext(DeclContext *DC) {
2244 uint64_t LexicalOffset = ReadLocalOffset();
2245 uint64_t VisibleOffset = ReadLocalOffset();
2246 return std::make_pair(LexicalOffset, VisibleOffset);
2249 template <typename T>
2250 ASTDeclReader::RedeclarableResult
2251 ASTDeclReader::VisitRedeclarable(Redeclarable<T> *D) {
2252 DeclID FirstDeclID = ReadDeclID();
2253 Decl *MergeWith = nullptr;
2255 bool IsKeyDecl = ThisDeclID == FirstDeclID;
2256 bool IsFirstLocalDecl = false;
2258 uint64_t RedeclOffset = 0;
2260 // 0 indicates that this declaration was the only declaration of its entity,
2261 // and is used for space optimization.
2262 if (FirstDeclID == 0) {
2263 FirstDeclID = ThisDeclID;
2265 IsFirstLocalDecl = true;
2266 } else if (unsigned N = Record.readInt()) {
2267 // This declaration was the first local declaration, but may have imported
2268 // other declarations.
2270 IsFirstLocalDecl = true;
2272 // We have some declarations that must be before us in our redeclaration
2273 // chain. Read them now, and remember that we ought to merge with one of
2275 // FIXME: Provide a known merge target to the second and subsequent such
2277 for (unsigned I = 0; I != N - 1; ++I)
2278 MergeWith = ReadDecl();
2280 RedeclOffset = ReadLocalOffset();
2282 // This declaration was not the first local declaration. Read the first
2283 // local declaration now, to trigger the import of other redeclarations.
2287 T *FirstDecl = cast_or_null<T>(Reader.GetDecl(FirstDeclID));
2288 if (FirstDecl != D) {
2289 // We delay loading of the redeclaration chain to avoid deeply nested calls.
2290 // We temporarily set the first (canonical) declaration as the previous one
2291 // which is the one that matters and mark the real previous DeclID to be
2292 // loaded & attached later on.
2293 D->RedeclLink = Redeclarable<T>::PreviousDeclLink(FirstDecl);
2294 D->First = FirstDecl->getCanonicalDecl();
2297 T *DAsT = static_cast<T*>(D);
2299 // Note that we need to load local redeclarations of this decl and build a
2300 // decl chain for them. This must happen *after* we perform the preloading
2301 // above; this ensures that the redeclaration chain is built in the correct
2303 if (IsFirstLocalDecl)
2304 Reader.PendingDeclChains.push_back(std::make_pair(DAsT, RedeclOffset));
2306 return RedeclarableResult(MergeWith, FirstDeclID, IsKeyDecl);
2309 /// \brief Attempts to merge the given declaration (D) with another declaration
2310 /// of the same entity.
2311 template<typename T>
2312 void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase,
2313 RedeclarableResult &Redecl,
2314 DeclID TemplatePatternID) {
2315 // If modules are not available, there is no reason to perform this merge.
2316 if (!Reader.getContext().getLangOpts().Modules)
2319 // If we're not the canonical declaration, we don't need to merge.
2320 if (!DBase->isFirstDecl())
2323 T *D = static_cast<T*>(DBase);
2325 if (auto *Existing = Redecl.getKnownMergeTarget())
2326 // We already know of an existing declaration we should merge with.
2327 mergeRedeclarable(D, cast<T>(Existing), Redecl, TemplatePatternID);
2328 else if (FindExistingResult ExistingRes = findExisting(D))
2329 if (T *Existing = ExistingRes)
2330 mergeRedeclarable(D, Existing, Redecl, TemplatePatternID);
2333 /// \brief "Cast" to type T, asserting if we don't have an implicit conversion.
2334 /// We use this to put code in a template that will only be valid for certain
2336 template<typename T> static T assert_cast(T t) { return t; }
2337 template<typename T> static T assert_cast(...) {
2338 llvm_unreachable("bad assert_cast");
2341 /// \brief Merge together the pattern declarations from two template
2343 void ASTDeclReader::mergeTemplatePattern(RedeclarableTemplateDecl *D,
2344 RedeclarableTemplateDecl *Existing,
2345 DeclID DsID, bool IsKeyDecl) {
2346 auto *DPattern = D->getTemplatedDecl();
2347 auto *ExistingPattern = Existing->getTemplatedDecl();
2348 RedeclarableResult Result(/*MergeWith*/ ExistingPattern,
2349 DPattern->getCanonicalDecl()->getGlobalID(),
2352 if (auto *DClass = dyn_cast<CXXRecordDecl>(DPattern)) {
2353 // Merge with any existing definition.
2354 // FIXME: This is duplicated in several places. Refactor.
2355 auto *ExistingClass =
2356 cast<CXXRecordDecl>(ExistingPattern)->getCanonicalDecl();
2357 if (auto *DDD = DClass->DefinitionData) {
2358 if (ExistingClass->DefinitionData) {
2359 MergeDefinitionData(ExistingClass, std::move(*DDD));
2361 ExistingClass->DefinitionData = DClass->DefinitionData;
2362 // We may have skipped this before because we thought that DClass
2363 // was the canonical declaration.
2364 Reader.PendingDefinitions.insert(DClass);
2367 DClass->DefinitionData = ExistingClass->DefinitionData;
2369 return mergeRedeclarable(DClass, cast<TagDecl>(ExistingPattern),
2372 if (auto *DFunction = dyn_cast<FunctionDecl>(DPattern))
2373 return mergeRedeclarable(DFunction, cast<FunctionDecl>(ExistingPattern),
2375 if (auto *DVar = dyn_cast<VarDecl>(DPattern))
2376 return mergeRedeclarable(DVar, cast<VarDecl>(ExistingPattern), Result);
2377 if (auto *DAlias = dyn_cast<TypeAliasDecl>(DPattern))
2378 return mergeRedeclarable(DAlias, cast<TypedefNameDecl>(ExistingPattern),
2380 llvm_unreachable("merged an unknown kind of redeclarable template");
2383 /// \brief Attempts to merge the given declaration (D) with another declaration
2384 /// of the same entity.
2385 template<typename T>
2386 void ASTDeclReader::mergeRedeclarable(Redeclarable<T> *DBase, T *Existing,
2387 RedeclarableResult &Redecl,
2388 DeclID TemplatePatternID) {
2389 T *D = static_cast<T*>(DBase);
2390 T *ExistingCanon = Existing->getCanonicalDecl();
2391 T *DCanon = D->getCanonicalDecl();
2392 if (ExistingCanon != DCanon) {
2393 assert(DCanon->getGlobalID() == Redecl.getFirstID() &&
2394 "already merged this declaration");
2396 // Have our redeclaration link point back at the canonical declaration
2397 // of the existing declaration, so that this declaration has the
2398 // appropriate canonical declaration.
2399 D->RedeclLink = Redeclarable<T>::PreviousDeclLink(ExistingCanon);
2400 D->First = ExistingCanon;
2401 ExistingCanon->Used |= D->Used;
2404 // When we merge a namespace, update its pointer to the first namespace.
2405 // We cannot have loaded any redeclarations of this declaration yet, so
2406 // there's nothing else that needs to be updated.
2407 if (auto *Namespace = dyn_cast<NamespaceDecl>(D))
2408 Namespace->AnonOrFirstNamespaceAndInline.setPointer(
2409 assert_cast<NamespaceDecl*>(ExistingCanon));
2411 // When we merge a template, merge its pattern.
2412 if (auto *DTemplate = dyn_cast<RedeclarableTemplateDecl>(D))
2413 mergeTemplatePattern(
2414 DTemplate, assert_cast<RedeclarableTemplateDecl*>(ExistingCanon),
2415 TemplatePatternID, Redecl.isKeyDecl());
2417 // If this declaration is a key declaration, make a note of that.
2418 if (Redecl.isKeyDecl())
2419 Reader.KeyDecls[ExistingCanon].push_back(Redecl.getFirstID());
2423 /// \brief Attempts to merge the given declaration (D) with another declaration
2424 /// of the same entity, for the case where the entity is not actually
2425 /// redeclarable. This happens, for instance, when merging the fields of
2426 /// identical class definitions from two different modules.
2427 template<typename T>
2428 void ASTDeclReader::mergeMergeable(Mergeable<T> *D) {
2429 // If modules are not available, there is no reason to perform this merge.
2430 if (!Reader.getContext().getLangOpts().Modules)
2433 // ODR-based merging is only performed in C++. In C, identically-named things
2434 // in different translation units are not redeclarations (but may still have
2435 // compatible types).
2436 if (!Reader.getContext().getLangOpts().CPlusPlus)
2439 if (FindExistingResult ExistingRes = findExisting(static_cast<T*>(D)))
2440 if (T *Existing = ExistingRes)
2441 Reader.Context.setPrimaryMergedDecl(static_cast<T*>(D),
2442 Existing->getCanonicalDecl());
2445 void ASTDeclReader::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
2447 unsigned NumVars = D->varlist_size();
2448 SmallVector<Expr *, 16> Vars;
2449 Vars.reserve(NumVars);
2450 for (unsigned i = 0; i != NumVars; ++i) {
2451 Vars.push_back(Record.readExpr());
2456 void ASTDeclReader::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) {
2458 D->setLocation(ReadSourceLocation());
2459 D->setCombiner(Record.readExpr());
2460 D->setInitializer(Record.readExpr());
2461 D->PrevDeclInScope = ReadDeclID();
2464 void ASTDeclReader::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) {
2468 //===----------------------------------------------------------------------===//
2469 // Attribute Reading
2470 //===----------------------------------------------------------------------===//
2472 /// \brief Reads attributes from the current stream position.
2473 void ASTReader::ReadAttributes(ModuleFile &F, AttrVec &Attrs,
2474 const RecordData &Record, unsigned &Idx) {
2475 for (unsigned i = 0, e = Record[Idx++]; i != e; ++i) {
2476 Attr *New = nullptr;
2477 attr::Kind Kind = (attr::Kind)Record[Idx++];
2478 SourceRange Range = ReadSourceRange(F, Record, Idx);
2480 #include "clang/Serialization/AttrPCHRead.inc"
2482 assert(New && "Unable to decode attribute?");
2483 Attrs.push_back(New);
2487 //===----------------------------------------------------------------------===//
2488 // ASTReader Implementation
2489 //===----------------------------------------------------------------------===//
2491 /// \brief Note that we have loaded the declaration with the given
2494 /// This routine notes that this declaration has already been loaded,
2495 /// so that future GetDecl calls will return this declaration rather
2496 /// than trying to load a new declaration.
2497 inline void ASTReader::LoadedDecl(unsigned Index, Decl *D) {
2498 assert(!DeclsLoaded[Index] && "Decl loaded twice?");
2499 DeclsLoaded[Index] = D;
2503 /// \brief Determine whether the consumer will be interested in seeing
2504 /// this declaration (via HandleTopLevelDecl).
2506 /// This routine should return true for anything that might affect
2507 /// code generation, e.g., inline function definitions, Objective-C
2508 /// declarations with metadata, etc.
2509 static bool isConsumerInterestedIn(ASTContext &Ctx, Decl *D, bool HasBody) {
2510 // An ObjCMethodDecl is never considered as "interesting" because its
2511 // implementation container always is.
2513 // An ImportDecl or VarDecl imported from a module will get emitted when
2514 // we import the relevant module.
2515 if ((isa<ImportDecl>(D) || isa<VarDecl>(D)) && Ctx.DeclMustBeEmitted(D) &&
2516 D->getImportedOwningModule())
2519 if (isa<FileScopeAsmDecl>(D) ||
2520 isa<ObjCProtocolDecl>(D) ||
2521 isa<ObjCImplDecl>(D) ||
2522 isa<ImportDecl>(D) ||
2523 isa<PragmaCommentDecl>(D) ||
2524 isa<PragmaDetectMismatchDecl>(D))
2526 if (isa<OMPThreadPrivateDecl>(D) || isa<OMPDeclareReductionDecl>(D))
2527 return !D->getDeclContext()->isFunctionOrMethod();
2528 if (VarDecl *Var = dyn_cast<VarDecl>(D))
2529 return Var->isFileVarDecl() &&
2530 Var->isThisDeclarationADefinition() == VarDecl::Definition;
2531 if (FunctionDecl *Func = dyn_cast<FunctionDecl>(D))
2532 return Func->doesThisDeclarationHaveABody() || HasBody;
2537 /// \brief Get the correct cursor and offset for loading a declaration.
2538 ASTReader::RecordLocation
2539 ASTReader::DeclCursorForID(DeclID ID, SourceLocation &Loc) {
2540 GlobalDeclMapType::iterator I = GlobalDeclMap.find(ID);
2541 assert(I != GlobalDeclMap.end() && "Corrupted global declaration map");
2542 ModuleFile *M = I->second;
2543 const DeclOffset &DOffs =
2544 M->DeclOffsets[ID - M->BaseDeclID - NUM_PREDEF_DECL_IDS];
2545 Loc = TranslateSourceLocation(*M, DOffs.getLocation());
2546 return RecordLocation(M, DOffs.BitOffset);
2549 ASTReader::RecordLocation ASTReader::getLocalBitOffset(uint64_t GlobalOffset) {
2550 ContinuousRangeMap<uint64_t, ModuleFile*, 4>::iterator I
2551 = GlobalBitOffsetsMap.find(GlobalOffset);
2553 assert(I != GlobalBitOffsetsMap.end() && "Corrupted global bit offsets map");
2554 return RecordLocation(I->second, GlobalOffset - I->second->GlobalBitOffset);
2557 uint64_t ASTReader::getGlobalBitOffset(ModuleFile &M, uint32_t LocalOffset) {
2558 return LocalOffset + M.GlobalBitOffset;
2561 static bool isSameTemplateParameterList(const TemplateParameterList *X,
2562 const TemplateParameterList *Y);
2564 /// \brief Determine whether two template parameters are similar enough
2565 /// that they may be used in declarations of the same template.
2566 static bool isSameTemplateParameter(const NamedDecl *X,
2567 const NamedDecl *Y) {
2568 if (X->getKind() != Y->getKind())
2571 if (const TemplateTypeParmDecl *TX = dyn_cast<TemplateTypeParmDecl>(X)) {
2572 const TemplateTypeParmDecl *TY = cast<TemplateTypeParmDecl>(Y);
2573 return TX->isParameterPack() == TY->isParameterPack();
2576 if (const NonTypeTemplateParmDecl *TX = dyn_cast<NonTypeTemplateParmDecl>(X)) {
2577 const NonTypeTemplateParmDecl *TY = cast<NonTypeTemplateParmDecl>(Y);
2578 return TX->isParameterPack() == TY->isParameterPack() &&
2579 TX->getASTContext().hasSameType(TX->getType(), TY->getType());
2582 const TemplateTemplateParmDecl *TX = cast<TemplateTemplateParmDecl>(X);
2583 const TemplateTemplateParmDecl *TY = cast<TemplateTemplateParmDecl>(Y);
2584 return TX->isParameterPack() == TY->isParameterPack() &&
2585 isSameTemplateParameterList(TX->getTemplateParameters(),
2586 TY->getTemplateParameters());
2589 static NamespaceDecl *getNamespace(const NestedNameSpecifier *X) {
2590 if (auto *NS = X->getAsNamespace())
2592 if (auto *NAS = X->getAsNamespaceAlias())
2593 return NAS->getNamespace();
2597 static bool isSameQualifier(const NestedNameSpecifier *X,
2598 const NestedNameSpecifier *Y) {
2599 if (auto *NSX = getNamespace(X)) {
2600 auto *NSY = getNamespace(Y);
2601 if (!NSY || NSX->getCanonicalDecl() != NSY->getCanonicalDecl())
2603 } else if (X->getKind() != Y->getKind())
2606 // FIXME: For namespaces and types, we're permitted to check that the entity
2607 // is named via the same tokens. We should probably do so.
2608 switch (X->getKind()) {
2609 case NestedNameSpecifier::Identifier:
2610 if (X->getAsIdentifier() != Y->getAsIdentifier())
2613 case NestedNameSpecifier::Namespace:
2614 case NestedNameSpecifier::NamespaceAlias:
2615 // We've already checked that we named the same namespace.
2617 case NestedNameSpecifier::TypeSpec:
2618 case NestedNameSpecifier::TypeSpecWithTemplate:
2619 if (X->getAsType()->getCanonicalTypeInternal() !=
2620 Y->getAsType()->getCanonicalTypeInternal())
2623 case NestedNameSpecifier::Global:
2624 case NestedNameSpecifier::Super:
2628 // Recurse into earlier portion of NNS, if any.
2629 auto *PX = X->getPrefix();
2630 auto *PY = Y->getPrefix();
2632 return isSameQualifier(PX, PY);
2636 /// \brief Determine whether two template parameter lists are similar enough
2637 /// that they may be used in declarations of the same template.
2638 static bool isSameTemplateParameterList(const TemplateParameterList *X,
2639 const TemplateParameterList *Y) {
2640 if (X->size() != Y->size())
2643 for (unsigned I = 0, N = X->size(); I != N; ++I)
2644 if (!isSameTemplateParameter(X->getParam(I), Y->getParam(I)))
2650 /// \brief Determine whether the two declarations refer to the same entity.
2651 static bool isSameEntity(NamedDecl *X, NamedDecl *Y) {
2652 assert(X->getDeclName() == Y->getDeclName() && "Declaration name mismatch!");
2657 // Must be in the same context.
2658 if (!X->getDeclContext()->getRedeclContext()->Equals(
2659 Y->getDeclContext()->getRedeclContext()))
2662 // Two typedefs refer to the same entity if they have the same underlying
2664 if (TypedefNameDecl *TypedefX = dyn_cast<TypedefNameDecl>(X))
2665 if (TypedefNameDecl *TypedefY = dyn_cast<TypedefNameDecl>(Y))
2666 return X->getASTContext().hasSameType(TypedefX->getUnderlyingType(),
2667 TypedefY->getUnderlyingType());
2669 // Must have the same kind.
2670 if (X->getKind() != Y->getKind())
2673 // Objective-C classes and protocols with the same name always match.
2674 if (isa<ObjCInterfaceDecl>(X) || isa<ObjCProtocolDecl>(X))
2677 if (isa<ClassTemplateSpecializationDecl>(X)) {
2678 // No need to handle these here: we merge them when adding them to the
2683 // Compatible tags match.
2684 if (TagDecl *TagX = dyn_cast<TagDecl>(X)) {
2685 TagDecl *TagY = cast<TagDecl>(Y);
2686 return (TagX->getTagKind() == TagY->getTagKind()) ||
2687 ((TagX->getTagKind() == TTK_Struct || TagX->getTagKind() == TTK_Class ||
2688 TagX->getTagKind() == TTK_Interface) &&
2689 (TagY->getTagKind() == TTK_Struct || TagY->getTagKind() == TTK_Class ||
2690 TagY->getTagKind() == TTK_Interface));
2693 // Functions with the same type and linkage match.
2694 // FIXME: This needs to cope with merging of prototyped/non-prototyped
2696 if (FunctionDecl *FuncX = dyn_cast<FunctionDecl>(X)) {
2697 FunctionDecl *FuncY = cast<FunctionDecl>(Y);
2698 if (CXXConstructorDecl *CtorX = dyn_cast<CXXConstructorDecl>(X)) {
2699 CXXConstructorDecl *CtorY = cast<CXXConstructorDecl>(Y);
2700 if (CtorX->getInheritedConstructor() &&
2701 !isSameEntity(CtorX->getInheritedConstructor().getConstructor(),
2702 CtorY->getInheritedConstructor().getConstructor()))
2705 return (FuncX->getLinkageInternal() == FuncY->getLinkageInternal()) &&
2706 FuncX->getASTContext().hasSameType(FuncX->getType(), FuncY->getType());
2709 // Variables with the same type and linkage match.
2710 if (VarDecl *VarX = dyn_cast<VarDecl>(X)) {
2711 VarDecl *VarY = cast<VarDecl>(Y);
2712 if (VarX->getLinkageInternal() == VarY->getLinkageInternal()) {
2713 ASTContext &C = VarX->getASTContext();
2714 if (C.hasSameType(VarX->getType(), VarY->getType()))
2717 // We can get decls with different types on the redecl chain. Eg.
2718 // template <typename T> struct S { static T Var[]; }; // #1
2719 // template <typename T> T S<T>::Var[sizeof(T)]; // #2
2720 // Only? happens when completing an incomplete array type. In this case
2721 // when comparing #1 and #2 we should go through their element type.
2722 const ArrayType *VarXTy = C.getAsArrayType(VarX->getType());
2723 const ArrayType *VarYTy = C.getAsArrayType(VarY->getType());
2724 if (!VarXTy || !VarYTy)
2726 if (VarXTy->isIncompleteArrayType() || VarYTy->isIncompleteArrayType())
2727 return C.hasSameType(VarXTy->getElementType(), VarYTy->getElementType());
2732 // Namespaces with the same name and inlinedness match.
2733 if (NamespaceDecl *NamespaceX = dyn_cast<NamespaceDecl>(X)) {
2734 NamespaceDecl *NamespaceY = cast<NamespaceDecl>(Y);
2735 return NamespaceX->isInline() == NamespaceY->isInline();
2738 // Identical template names and kinds match if their template parameter lists
2739 // and patterns match.
2740 if (TemplateDecl *TemplateX = dyn_cast<TemplateDecl>(X)) {
2741 TemplateDecl *TemplateY = cast<TemplateDecl>(Y);
2742 return isSameEntity(TemplateX->getTemplatedDecl(),
2743 TemplateY->getTemplatedDecl()) &&
2744 isSameTemplateParameterList(TemplateX->getTemplateParameters(),
2745 TemplateY->getTemplateParameters());
2748 // Fields with the same name and the same type match.
2749 if (FieldDecl *FDX = dyn_cast<FieldDecl>(X)) {
2750 FieldDecl *FDY = cast<FieldDecl>(Y);
2751 // FIXME: Also check the bitwidth is odr-equivalent, if any.
2752 return X->getASTContext().hasSameType(FDX->getType(), FDY->getType());
2755 // Indirect fields with the same target field match.
2756 if (auto *IFDX = dyn_cast<IndirectFieldDecl>(X)) {
2757 auto *IFDY = cast<IndirectFieldDecl>(Y);
2758 return IFDX->getAnonField()->getCanonicalDecl() ==
2759 IFDY->getAnonField()->getCanonicalDecl();
2762 // Enumerators with the same name match.
2763 if (isa<EnumConstantDecl>(X))
2764 // FIXME: Also check the value is odr-equivalent.
2767 // Using shadow declarations with the same target match.
2768 if (UsingShadowDecl *USX = dyn_cast<UsingShadowDecl>(X)) {
2769 UsingShadowDecl *USY = cast<UsingShadowDecl>(Y);
2770 return USX->getTargetDecl() == USY->getTargetDecl();
2773 // Using declarations with the same qualifier match. (We already know that
2774 // the name matches.)
2775 if (auto *UX = dyn_cast<UsingDecl>(X)) {
2776 auto *UY = cast<UsingDecl>(Y);
2777 return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
2778 UX->hasTypename() == UY->hasTypename() &&
2779 UX->isAccessDeclaration() == UY->isAccessDeclaration();
2781 if (auto *UX = dyn_cast<UnresolvedUsingValueDecl>(X)) {
2782 auto *UY = cast<UnresolvedUsingValueDecl>(Y);
2783 return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
2784 UX->isAccessDeclaration() == UY->isAccessDeclaration();
2786 if (auto *UX = dyn_cast<UnresolvedUsingTypenameDecl>(X))
2787 return isSameQualifier(
2789 cast<UnresolvedUsingTypenameDecl>(Y)->getQualifier());
2791 // Namespace alias definitions with the same target match.
2792 if (auto *NAX = dyn_cast<NamespaceAliasDecl>(X)) {
2793 auto *NAY = cast<NamespaceAliasDecl>(Y);
2794 return NAX->getNamespace()->Equals(NAY->getNamespace());
2800 /// Find the context in which we should search for previous declarations when
2801 /// looking for declarations to merge.
2802 DeclContext *ASTDeclReader::getPrimaryContextForMerging(ASTReader &Reader,
2804 if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(DC))
2805 return ND->getOriginalNamespace();
2807 if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(DC)) {
2808 // Try to dig out the definition.
2809 auto *DD = RD->DefinitionData;
2811 DD = RD->getCanonicalDecl()->DefinitionData;
2813 // If there's no definition yet, then DC's definition is added by an update
2814 // record, but we've not yet loaded that update record. In this case, we
2815 // commit to DC being the canonical definition now, and will fix this when
2816 // we load the update record.
2818 DD = new (Reader.Context) struct CXXRecordDecl::DefinitionData(RD);
2819 RD->IsCompleteDefinition = true;
2820 RD->DefinitionData = DD;
2821 RD->getCanonicalDecl()->DefinitionData = DD;
2823 // Track that we did this horrible thing so that we can fix it later.
2824 Reader.PendingFakeDefinitionData.insert(
2825 std::make_pair(DD, ASTReader::PendingFakeDefinitionKind::Fake));
2828 return DD->Definition;
2831 if (EnumDecl *ED = dyn_cast<EnumDecl>(DC))
2832 return ED->getASTContext().getLangOpts().CPlusPlus? ED->getDefinition()
2835 // We can see the TU here only if we have no Sema object. In that case,
2836 // there's no TU scope to look in, so using the DC alone is sufficient.
2837 if (auto *TU = dyn_cast<TranslationUnitDecl>(DC))
2843 ASTDeclReader::FindExistingResult::~FindExistingResult() {
2844 // Record that we had a typedef name for linkage whether or not we merge
2845 // with that declaration.
2846 if (TypedefNameForLinkage) {
2847 DeclContext *DC = New->getDeclContext()->getRedeclContext();
2848 Reader.ImportedTypedefNamesForLinkage.insert(
2849 std::make_pair(std::make_pair(DC, TypedefNameForLinkage), New));
2853 if (!AddResult || Existing)
2856 DeclarationName Name = New->getDeclName();
2857 DeclContext *DC = New->getDeclContext()->getRedeclContext();
2858 if (needsAnonymousDeclarationNumber(New)) {
2859 setAnonymousDeclForMerging(Reader, New->getLexicalDeclContext(),
2860 AnonymousDeclNumber, New);
2861 } else if (DC->isTranslationUnit() &&
2862 !Reader.getContext().getLangOpts().CPlusPlus) {
2863 if (Reader.getIdResolver().tryAddTopLevelDecl(New, Name))
2864 Reader.PendingFakeLookupResults[Name.getAsIdentifierInfo()]
2866 } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
2867 // Add the declaration to its redeclaration context so later merging
2868 // lookups will find it.
2869 MergeDC->makeDeclVisibleInContextImpl(New, /*Internal*/true);
2873 /// Find the declaration that should be merged into, given the declaration found
2874 /// by name lookup. If we're merging an anonymous declaration within a typedef,
2875 /// we need a matching typedef, and we merge with the type inside it.
2876 static NamedDecl *getDeclForMerging(NamedDecl *Found,
2877 bool IsTypedefNameForLinkage) {
2878 if (!IsTypedefNameForLinkage)
2881 // If we found a typedef declaration that gives a name to some other
2882 // declaration, then we want that inner declaration. Declarations from
2883 // AST files are handled via ImportedTypedefNamesForLinkage.
2884 if (Found->isFromASTFile())
2887 if (auto *TND = dyn_cast<TypedefNameDecl>(Found))
2888 return TND->getAnonDeclWithTypedefName(/*AnyRedecl*/true);
2893 NamedDecl *ASTDeclReader::getAnonymousDeclForMerging(ASTReader &Reader,
2896 // If the lexical context has been merged, look into the now-canonical
2898 if (auto *Merged = Reader.MergedDeclContexts.lookup(DC))
2901 // If we've seen this before, return the canonical declaration.
2902 auto &Previous = Reader.AnonymousDeclarationsForMerging[DC];
2903 if (Index < Previous.size() && Previous[Index])
2904 return Previous[Index];
2906 // If this is the first time, but we have parsed a declaration of the context,
2907 // build the anonymous declaration list from the parsed declaration.
2908 if (!cast<Decl>(DC)->isFromASTFile()) {
2909 numberAnonymousDeclsWithin(DC, [&](NamedDecl *ND, unsigned Number) {
2910 if (Previous.size() == Number)
2911 Previous.push_back(cast<NamedDecl>(ND->getCanonicalDecl()));
2913 Previous[Number] = cast<NamedDecl>(ND->getCanonicalDecl());
2917 return Index < Previous.size() ? Previous[Index] : nullptr;
2920 void ASTDeclReader::setAnonymousDeclForMerging(ASTReader &Reader,
2921 DeclContext *DC, unsigned Index,
2923 if (auto *Merged = Reader.MergedDeclContexts.lookup(DC))
2926 auto &Previous = Reader.AnonymousDeclarationsForMerging[DC];
2927 if (Index >= Previous.size())
2928 Previous.resize(Index + 1);
2929 if (!Previous[Index])
2930 Previous[Index] = D;
2933 ASTDeclReader::FindExistingResult ASTDeclReader::findExisting(NamedDecl *D) {
2934 DeclarationName Name = TypedefNameForLinkage ? TypedefNameForLinkage
2937 if (!Name && !needsAnonymousDeclarationNumber(D)) {
2938 // Don't bother trying to find unnamed declarations that are in
2939 // unmergeable contexts.
2940 FindExistingResult Result(Reader, D, /*Existing=*/nullptr,
2941 AnonymousDeclNumber, TypedefNameForLinkage);
2946 DeclContext *DC = D->getDeclContext()->getRedeclContext();
2947 if (TypedefNameForLinkage) {
2948 auto It = Reader.ImportedTypedefNamesForLinkage.find(
2949 std::make_pair(DC, TypedefNameForLinkage));
2950 if (It != Reader.ImportedTypedefNamesForLinkage.end())
2951 if (isSameEntity(It->second, D))
2952 return FindExistingResult(Reader, D, It->second, AnonymousDeclNumber,
2953 TypedefNameForLinkage);
2954 // Go on to check in other places in case an existing typedef name
2955 // was not imported.
2958 if (needsAnonymousDeclarationNumber(D)) {
2959 // This is an anonymous declaration that we may need to merge. Look it up
2960 // in its context by number.
2961 if (auto *Existing = getAnonymousDeclForMerging(
2962 Reader, D->getLexicalDeclContext(), AnonymousDeclNumber))
2963 if (isSameEntity(Existing, D))
2964 return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
2965 TypedefNameForLinkage);
2966 } else if (DC->isTranslationUnit() &&
2967 !Reader.getContext().getLangOpts().CPlusPlus) {
2968 IdentifierResolver &IdResolver = Reader.getIdResolver();
2970 // Temporarily consider the identifier to be up-to-date. We don't want to
2971 // cause additional lookups here.
2972 class UpToDateIdentifierRAII {
2977 explicit UpToDateIdentifierRAII(IdentifierInfo *II)
2978 : II(II), WasOutToDate(false)
2981 WasOutToDate = II->isOutOfDate();
2983 II->setOutOfDate(false);
2987 ~UpToDateIdentifierRAII() {
2989 II->setOutOfDate(true);
2991 } UpToDate(Name.getAsIdentifierInfo());
2993 for (IdentifierResolver::iterator I = IdResolver.begin(Name),
2994 IEnd = IdResolver.end();
2996 if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
2997 if (isSameEntity(Existing, D))
2998 return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
2999 TypedefNameForLinkage);
3001 } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3002 DeclContext::lookup_result R = MergeDC->noload_lookup(Name);
3003 for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E; ++I) {
3004 if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3005 if (isSameEntity(Existing, D))
3006 return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3007 TypedefNameForLinkage);
3010 // Not in a mergeable context.
3011 return FindExistingResult(Reader);
3014 // If this declaration is from a merged context, make a note that we need to
3015 // check that the canonical definition of that context contains the decl.
3017 // FIXME: We should do something similar if we merge two definitions of the
3018 // same template specialization into the same CXXRecordDecl.
3019 auto MergedDCIt = Reader.MergedDeclContexts.find(D->getLexicalDeclContext());
3020 if (MergedDCIt != Reader.MergedDeclContexts.end() &&
3021 MergedDCIt->second == D->getDeclContext())
3022 Reader.PendingOdrMergeChecks.push_back(D);
3024 return FindExistingResult(Reader, D, /*Existing=*/nullptr,
3025 AnonymousDeclNumber, TypedefNameForLinkage);
3028 template<typename DeclT>
3029 Decl *ASTDeclReader::getMostRecentDeclImpl(Redeclarable<DeclT> *D) {
3030 return D->RedeclLink.getLatestNotUpdated();
3032 Decl *ASTDeclReader::getMostRecentDeclImpl(...) {
3033 llvm_unreachable("getMostRecentDecl on non-redeclarable declaration");
3036 Decl *ASTDeclReader::getMostRecentDecl(Decl *D) {
3039 switch (D->getKind()) {
3040 #define ABSTRACT_DECL(TYPE)
3041 #define DECL(TYPE, BASE) \
3043 return getMostRecentDeclImpl(cast<TYPE##Decl>(D));
3044 #include "clang/AST/DeclNodes.inc"
3046 llvm_unreachable("unknown decl kind");
3049 Decl *ASTReader::getMostRecentExistingDecl(Decl *D) {
3050 return ASTDeclReader::getMostRecentDecl(D->getCanonicalDecl());
3053 template<typename DeclT>
3054 void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader,
3055 Redeclarable<DeclT> *D,
3056 Decl *Previous, Decl *Canon) {
3057 D->RedeclLink.setPrevious(cast<DeclT>(Previous));
3058 D->First = cast<DeclT>(Previous)->First;
3063 void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader,
3064 Redeclarable<VarDecl> *D,
3065 Decl *Previous, Decl *Canon) {
3066 VarDecl *VD = static_cast<VarDecl*>(D);
3067 VarDecl *PrevVD = cast<VarDecl>(Previous);
3068 D->RedeclLink.setPrevious(PrevVD);
3069 D->First = PrevVD->First;
3071 // We should keep at most one definition on the chain.
3072 // FIXME: Cache the definition once we've found it. Building a chain with
3073 // N definitions currently takes O(N^2) time here.
3074 if (VD->isThisDeclarationADefinition() == VarDecl::Definition) {
3075 for (VarDecl *CurD = PrevVD; CurD; CurD = CurD->getPreviousDecl()) {
3076 if (CurD->isThisDeclarationADefinition() == VarDecl::Definition) {
3077 Reader.mergeDefinitionVisibility(CurD, VD);
3078 VD->demoteThisDefinitionToDeclaration();
3086 void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader,
3087 Redeclarable<FunctionDecl> *D,
3088 Decl *Previous, Decl *Canon) {
3089 FunctionDecl *FD = static_cast<FunctionDecl*>(D);
3090 FunctionDecl *PrevFD = cast<FunctionDecl>(Previous);
3092 FD->RedeclLink.setPrevious(PrevFD);
3093 FD->First = PrevFD->First;
3095 // If the previous declaration is an inline function declaration, then this
3096 // declaration is too.
3097 if (PrevFD->IsInline != FD->IsInline) {
3098 // FIXME: [dcl.fct.spec]p4:
3099 // If a function with external linkage is declared inline in one
3100 // translation unit, it shall be declared inline in all translation
3101 // units in which it appears.
3103 // Be careful of this case:
3106 // template<typename T> struct X { void f(); };
3107 // template<typename T> inline void X<T>::f() {}
3109 // module B instantiates the declaration of X<int>::f
3110 // module C instantiates the definition of X<int>::f
3112 // If module B and C are merged, we do not have a violation of this rule.
3113 FD->IsInline = true;
3116 // If we need to propagate an exception specification along the redecl
3117 // chain, make a note of that so that we can do so later.
3118 auto *FPT = FD->getType()->getAs<FunctionProtoType>();
3119 auto *PrevFPT = PrevFD->getType()->getAs<FunctionProtoType>();
3120 if (FPT && PrevFPT) {
3121 bool IsUnresolved = isUnresolvedExceptionSpec(FPT->getExceptionSpecType());
3122 bool WasUnresolved =
3123 isUnresolvedExceptionSpec(PrevFPT->getExceptionSpecType());
3124 if (IsUnresolved != WasUnresolved)
3125 Reader.PendingExceptionSpecUpdates.insert(
3126 std::make_pair(Canon, IsUnresolved ? PrevFD : FD));
3129 } // end namespace clang
3131 void ASTDeclReader::attachPreviousDeclImpl(ASTReader &Reader, ...) {
3132 llvm_unreachable("attachPreviousDecl on non-redeclarable declaration");
3135 /// Inherit the default template argument from \p From to \p To. Returns
3136 /// \c false if there is no default template for \p From.
3137 template <typename ParmDecl>
3138 static bool inheritDefaultTemplateArgument(ASTContext &Context, ParmDecl *From,
3140 auto *To = cast<ParmDecl>(ToD);
3141 if (!From->hasDefaultArgument())
3143 To->setInheritedDefaultArgument(Context, From);
3147 static void inheritDefaultTemplateArguments(ASTContext &Context,
3150 auto *FromTP = From->getTemplateParameters();
3151 auto *ToTP = To->getTemplateParameters();
3152 assert(FromTP->size() == ToTP->size() && "merged mismatched templates?");
3154 for (unsigned I = 0, N = FromTP->size(); I != N; ++I) {
3155 NamedDecl *FromParam = FromTP->getParam(N - I - 1);
3156 if (FromParam->isParameterPack())
3158 NamedDecl *ToParam = ToTP->getParam(N - I - 1);
3160 if (auto *FTTP = dyn_cast<TemplateTypeParmDecl>(FromParam)) {
3161 if (!inheritDefaultTemplateArgument(Context, FTTP, ToParam))
3163 } else if (auto *FNTTP = dyn_cast<NonTypeTemplateParmDecl>(FromParam)) {
3164 if (!inheritDefaultTemplateArgument(Context, FNTTP, ToParam))
3167 if (!inheritDefaultTemplateArgument(
3168 Context, cast<TemplateTemplateParmDecl>(FromParam), ToParam))
3174 void ASTDeclReader::attachPreviousDecl(ASTReader &Reader, Decl *D,
3175 Decl *Previous, Decl *Canon) {
3176 assert(D && Previous);
3178 switch (D->getKind()) {
3179 #define ABSTRACT_DECL(TYPE)
3180 #define DECL(TYPE, BASE) \
3182 attachPreviousDeclImpl(Reader, cast<TYPE##Decl>(D), Previous, Canon); \
3184 #include "clang/AST/DeclNodes.inc"
3187 // If the declaration was visible in one module, a redeclaration of it in
3188 // another module remains visible even if it wouldn't be visible by itself.
3190 // FIXME: In this case, the declaration should only be visible if a module
3191 // that makes it visible has been imported.
3192 D->IdentifierNamespace |=
3193 Previous->IdentifierNamespace &
3194 (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
3196 // If the declaration declares a template, it may inherit default arguments
3197 // from the previous declaration.
3198 if (TemplateDecl *TD = dyn_cast<TemplateDecl>(D))
3199 inheritDefaultTemplateArguments(Reader.getContext(),
3200 cast<TemplateDecl>(Previous), TD);
3203 template<typename DeclT>
3204 void ASTDeclReader::attachLatestDeclImpl(Redeclarable<DeclT> *D, Decl *Latest) {
3205 D->RedeclLink.setLatest(cast<DeclT>(Latest));
3207 void ASTDeclReader::attachLatestDeclImpl(...) {
3208 llvm_unreachable("attachLatestDecl on non-redeclarable declaration");
3211 void ASTDeclReader::attachLatestDecl(Decl *D, Decl *Latest) {
3212 assert(D && Latest);
3214 switch (D->getKind()) {
3215 #define ABSTRACT_DECL(TYPE)
3216 #define DECL(TYPE, BASE) \
3218 attachLatestDeclImpl(cast<TYPE##Decl>(D), Latest); \
3220 #include "clang/AST/DeclNodes.inc"
3224 template<typename DeclT>
3225 void ASTDeclReader::markIncompleteDeclChainImpl(Redeclarable<DeclT> *D) {
3226 D->RedeclLink.markIncomplete();
3228 void ASTDeclReader::markIncompleteDeclChainImpl(...) {
3229 llvm_unreachable("markIncompleteDeclChain on non-redeclarable declaration");
3232 void ASTReader::markIncompleteDeclChain(Decl *D) {
3233 switch (D->getKind()) {
3234 #define ABSTRACT_DECL(TYPE)
3235 #define DECL(TYPE, BASE) \
3237 ASTDeclReader::markIncompleteDeclChainImpl(cast<TYPE##Decl>(D)); \
3239 #include "clang/AST/DeclNodes.inc"
3243 /// \brief Read the declaration at the given offset from the AST file.
3244 Decl *ASTReader::ReadDeclRecord(DeclID ID) {
3245 unsigned Index = ID - NUM_PREDEF_DECL_IDS;
3246 SourceLocation DeclLoc;
3247 RecordLocation Loc = DeclCursorForID(ID, DeclLoc);
3248 llvm::BitstreamCursor &DeclsCursor = Loc.F->DeclsCursor;
3249 // Keep track of where we are in the stream, then jump back there
3250 // after reading this declaration.
3251 SavedStreamPosition SavedPosition(DeclsCursor);
3253 ReadingKindTracker ReadingKind(Read_Decl, *this);
3255 // Note that we are loading a declaration record.
3256 Deserializing ADecl(this);
3258 DeclsCursor.JumpToBit(Loc.Offset);
3259 ASTRecordReader Record(*this, *Loc.F);
3260 ASTDeclReader Reader(*this, Record, Loc, ID, DeclLoc);
3261 unsigned Code = DeclsCursor.ReadCode();
3264 switch ((DeclCode)Record.readRecord(DeclsCursor, Code)) {
3265 case DECL_CONTEXT_LEXICAL:
3266 case DECL_CONTEXT_VISIBLE:
3267 llvm_unreachable("Record cannot be de-serialized with ReadDeclRecord");
3269 D = TypedefDecl::CreateDeserialized(Context, ID);
3271 case DECL_TYPEALIAS:
3272 D = TypeAliasDecl::CreateDeserialized(Context, ID);
3275 D = EnumDecl::CreateDeserialized(Context, ID);
3278 D = RecordDecl::CreateDeserialized(Context, ID);
3280 case DECL_ENUM_CONSTANT:
3281 D = EnumConstantDecl::CreateDeserialized(Context, ID);
3284 D = FunctionDecl::CreateDeserialized(Context, ID);
3286 case DECL_LINKAGE_SPEC:
3287 D = LinkageSpecDecl::CreateDeserialized(Context, ID);
3290 D = ExportDecl::CreateDeserialized(Context, ID);
3293 D = LabelDecl::CreateDeserialized(Context, ID);
3295 case DECL_NAMESPACE:
3296 D = NamespaceDecl::CreateDeserialized(Context, ID);
3298 case DECL_NAMESPACE_ALIAS:
3299 D = NamespaceAliasDecl::CreateDeserialized(Context, ID);
3302 D = UsingDecl::CreateDeserialized(Context, ID);
3304 case DECL_USING_PACK:
3305 D = UsingPackDecl::CreateDeserialized(Context, ID, Record.readInt());
3307 case DECL_USING_SHADOW:
3308 D = UsingShadowDecl::CreateDeserialized(Context, ID);
3310 case DECL_CONSTRUCTOR_USING_SHADOW:
3311 D = ConstructorUsingShadowDecl::CreateDeserialized(Context, ID);
3313 case DECL_USING_DIRECTIVE:
3314 D = UsingDirectiveDecl::CreateDeserialized(Context, ID);
3316 case DECL_UNRESOLVED_USING_VALUE:
3317 D = UnresolvedUsingValueDecl::CreateDeserialized(Context, ID);
3319 case DECL_UNRESOLVED_USING_TYPENAME:
3320 D = UnresolvedUsingTypenameDecl::CreateDeserialized(Context, ID);
3322 case DECL_CXX_RECORD:
3323 D = CXXRecordDecl::CreateDeserialized(Context, ID);
3325 case DECL_CXX_METHOD:
3326 D = CXXMethodDecl::CreateDeserialized(Context, ID);
3328 case DECL_CXX_CONSTRUCTOR:
3329 D = CXXConstructorDecl::CreateDeserialized(Context, ID, false);
3331 case DECL_CXX_INHERITED_CONSTRUCTOR:
3332 D = CXXConstructorDecl::CreateDeserialized(Context, ID, true);
3334 case DECL_CXX_DESTRUCTOR:
3335 D = CXXDestructorDecl::CreateDeserialized(Context, ID);
3337 case DECL_CXX_CONVERSION:
3338 D = CXXConversionDecl::CreateDeserialized(Context, ID);
3340 case DECL_ACCESS_SPEC:
3341 D = AccessSpecDecl::CreateDeserialized(Context, ID);
3344 D = FriendDecl::CreateDeserialized(Context, ID, Record.readInt());
3346 case DECL_FRIEND_TEMPLATE:
3347 D = FriendTemplateDecl::CreateDeserialized(Context, ID);
3349 case DECL_CLASS_TEMPLATE:
3350 D = ClassTemplateDecl::CreateDeserialized(Context, ID);
3352 case DECL_CLASS_TEMPLATE_SPECIALIZATION:
3353 D = ClassTemplateSpecializationDecl::CreateDeserialized(Context, ID);
3355 case DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION:
3356 D = ClassTemplatePartialSpecializationDecl::CreateDeserialized(Context, ID);
3358 case DECL_VAR_TEMPLATE:
3359 D = VarTemplateDecl::CreateDeserialized(Context, ID);
3361 case DECL_VAR_TEMPLATE_SPECIALIZATION:
3362 D = VarTemplateSpecializationDecl::CreateDeserialized(Context, ID);
3364 case DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION:
3365 D = VarTemplatePartialSpecializationDecl::CreateDeserialized(Context, ID);
3367 case DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION:
3368 D = ClassScopeFunctionSpecializationDecl::CreateDeserialized(Context, ID);
3370 case DECL_FUNCTION_TEMPLATE:
3371 D = FunctionTemplateDecl::CreateDeserialized(Context, ID);
3373 case DECL_TEMPLATE_TYPE_PARM:
3374 D = TemplateTypeParmDecl::CreateDeserialized(Context, ID);
3376 case DECL_NON_TYPE_TEMPLATE_PARM:
3377 D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID);
3379 case DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK:
3380 D = NonTypeTemplateParmDecl::CreateDeserialized(Context, ID,
3383 case DECL_TEMPLATE_TEMPLATE_PARM:
3384 D = TemplateTemplateParmDecl::CreateDeserialized(Context, ID);
3386 case DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK:
3387 D = TemplateTemplateParmDecl::CreateDeserialized(Context, ID,
3390 case DECL_TYPE_ALIAS_TEMPLATE:
3391 D = TypeAliasTemplateDecl::CreateDeserialized(Context, ID);
3393 case DECL_STATIC_ASSERT:
3394 D = StaticAssertDecl::CreateDeserialized(Context, ID);
3396 case DECL_OBJC_METHOD:
3397 D = ObjCMethodDecl::CreateDeserialized(Context, ID);
3399 case DECL_OBJC_INTERFACE:
3400 D = ObjCInterfaceDecl::CreateDeserialized(Context, ID);
3402 case DECL_OBJC_IVAR:
3403 D = ObjCIvarDecl::CreateDeserialized(Context, ID);
3405 case DECL_OBJC_PROTOCOL:
3406 D = ObjCProtocolDecl::CreateDeserialized(Context, ID);
3408 case DECL_OBJC_AT_DEFS_FIELD:
3409 D = ObjCAtDefsFieldDecl::CreateDeserialized(Context, ID);
3411 case DECL_OBJC_CATEGORY:
3412 D = ObjCCategoryDecl::CreateDeserialized(Context, ID);
3414 case DECL_OBJC_CATEGORY_IMPL:
3415 D = ObjCCategoryImplDecl::CreateDeserialized(Context, ID);
3417 case DECL_OBJC_IMPLEMENTATION:
3418 D = ObjCImplementationDecl::CreateDeserialized(Context, ID);
3420 case DECL_OBJC_COMPATIBLE_ALIAS:
3421 D = ObjCCompatibleAliasDecl::CreateDeserialized(Context, ID);
3423 case DECL_OBJC_PROPERTY:
3424 D = ObjCPropertyDecl::CreateDeserialized(Context, ID);
3426 case DECL_OBJC_PROPERTY_IMPL:
3427 D = ObjCPropertyImplDecl::CreateDeserialized(Context, ID);
3430 D = FieldDecl::CreateDeserialized(Context, ID);
3432 case DECL_INDIRECTFIELD:
3433 D = IndirectFieldDecl::CreateDeserialized(Context, ID);
3436 D = VarDecl::CreateDeserialized(Context, ID);
3438 case DECL_IMPLICIT_PARAM:
3439 D = ImplicitParamDecl::CreateDeserialized(Context, ID);
3442 D = ParmVarDecl::CreateDeserialized(Context, ID);
3444 case DECL_DECOMPOSITION:
3445 D = DecompositionDecl::CreateDeserialized(Context, ID, Record.readInt());
3448 D = BindingDecl::CreateDeserialized(Context, ID);
3450 case DECL_FILE_SCOPE_ASM:
3451 D = FileScopeAsmDecl::CreateDeserialized(Context, ID);
3454 D = BlockDecl::CreateDeserialized(Context, ID);
3456 case DECL_MS_PROPERTY:
3457 D = MSPropertyDecl::CreateDeserialized(Context, ID);
3460 D = CapturedDecl::CreateDeserialized(Context, ID, Record.readInt());
3462 case DECL_CXX_BASE_SPECIFIERS:
3463 Error("attempt to read a C++ base-specifier record as a declaration");
3465 case DECL_CXX_CTOR_INITIALIZERS:
3466 Error("attempt to read a C++ ctor initializer record as a declaration");
3469 // Note: last entry of the ImportDecl record is the number of stored source
3471 D = ImportDecl::CreateDeserialized(Context, ID, Record.back());
3473 case DECL_OMP_THREADPRIVATE:
3474 D = OMPThreadPrivateDecl::CreateDeserialized(Context, ID, Record.readInt());
3476 case DECL_OMP_DECLARE_REDUCTION:
3477 D = OMPDeclareReductionDecl::CreateDeserialized(Context, ID);
3479 case DECL_OMP_CAPTUREDEXPR:
3480 D = OMPCapturedExprDecl::CreateDeserialized(Context, ID);
3482 case DECL_PRAGMA_COMMENT:
3483 D = PragmaCommentDecl::CreateDeserialized(Context, ID, Record.readInt());
3485 case DECL_PRAGMA_DETECT_MISMATCH:
3486 D = PragmaDetectMismatchDecl::CreateDeserialized(Context, ID,
3490 D = EmptyDecl::CreateDeserialized(Context, ID);
3492 case DECL_OBJC_TYPE_PARAM:
3493 D = ObjCTypeParamDecl::CreateDeserialized(Context, ID);
3497 assert(D && "Unknown declaration reading AST file");
3498 LoadedDecl(Index, D);
3499 // Set the DeclContext before doing any deserialization, to make sure internal
3500 // calls to Decl::getASTContext() by Decl's methods will find the
3501 // TranslationUnitDecl without crashing.
3502 D->setDeclContext(Context.getTranslationUnitDecl());
3505 // If this declaration is also a declaration context, get the
3506 // offsets for its tables of lexical and visible declarations.
3507 if (DeclContext *DC = dyn_cast<DeclContext>(D)) {
3508 std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
3509 if (Offsets.first &&
3510 ReadLexicalDeclContextStorage(*Loc.F, DeclsCursor, Offsets.first, DC))
3512 if (Offsets.second &&
3513 ReadVisibleDeclContextStorage(*Loc.F, DeclsCursor, Offsets.second, ID))
3516 assert(Record.getIdx() == Record.size());
3518 // Load any relevant update records.
3519 PendingUpdateRecords.push_back(std::make_pair(ID, D));
3521 // Load the categories after recursive loading is finished.
3522 if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(D))
3523 // If we already have a definition when deserializing the ObjCInterfaceDecl,
3524 // we put the Decl in PendingDefinitions so we can pull the categories here.
3525 if (Class->isThisDeclarationADefinition() ||
3526 PendingDefinitions.count(Class))
3527 loadObjCCategories(ID, Class);
3529 // If we have deserialized a declaration that has a definition the
3530 // AST consumer might need to know about, queue it.
3531 // We don't pass it to the consumer immediately because we may be in recursive
3532 // loading, and some declarations may still be initializing.
3533 if (isConsumerInterestedIn(Context, D, Reader.hasPendingBody()))
3534 InterestingDecls.push_back(D);
3539 void ASTReader::loadDeclUpdateRecords(serialization::DeclID ID, Decl *D) {
3540 // The declaration may have been modified by files later in the chain.
3541 // If this is the case, read the record containing the updates from each file
3542 // and pass it to ASTDeclReader to make the modifications.
3543 ProcessingUpdatesRAIIObj ProcessingUpdates(*this);
3544 DeclUpdateOffsetsMap::iterator UpdI = DeclUpdateOffsets.find(ID);
3545 if (UpdI != DeclUpdateOffsets.end()) {
3546 auto UpdateOffsets = std::move(UpdI->second);
3547 DeclUpdateOffsets.erase(UpdI);
3549 bool WasInteresting = isConsumerInterestedIn(Context, D, false);
3550 for (auto &FileAndOffset : UpdateOffsets) {
3551 ModuleFile *F = FileAndOffset.first;
3552 uint64_t Offset = FileAndOffset.second;
3553 llvm::BitstreamCursor &Cursor = F->DeclsCursor;
3554 SavedStreamPosition SavedPosition(Cursor);
3555 Cursor.JumpToBit(Offset);
3556 unsigned Code = Cursor.ReadCode();
3557 ASTRecordReader Record(*this, *F);
3558 unsigned RecCode = Record.readRecord(Cursor, Code);
3560 assert(RecCode == DECL_UPDATES && "Expected DECL_UPDATES record!");
3562 ASTDeclReader Reader(*this, Record, RecordLocation(F, Offset), ID,
3564 Reader.UpdateDecl(D);
3566 // We might have made this declaration interesting. If so, remember that
3567 // we need to hand it off to the consumer.
3568 if (!WasInteresting &&
3569 isConsumerInterestedIn(Context, D, Reader.hasPendingBody())) {
3570 InterestingDecls.push_back(D);
3571 WasInteresting = true;
3576 // Load the pending visible updates for this decl context, if it has any.
3577 auto I = PendingVisibleUpdates.find(ID);
3578 if (I != PendingVisibleUpdates.end()) {
3579 auto VisibleUpdates = std::move(I->second);
3580 PendingVisibleUpdates.erase(I);
3582 auto *DC = cast<DeclContext>(D)->getPrimaryContext();
3583 for (const PendingVisibleUpdate &Update : VisibleUpdates)
3584 Lookups[DC].Table.add(
3585 Update.Mod, Update.Data,
3586 reader::ASTDeclContextNameLookupTrait(*this, *Update.Mod));
3587 DC->setHasExternalVisibleStorage(true);
3591 void ASTReader::loadPendingDeclChain(Decl *FirstLocal, uint64_t LocalOffset) {
3592 // Attach FirstLocal to the end of the decl chain.
3593 Decl *CanonDecl = FirstLocal->getCanonicalDecl();
3594 if (FirstLocal != CanonDecl) {
3595 Decl *PrevMostRecent = ASTDeclReader::getMostRecentDecl(CanonDecl);
3596 ASTDeclReader::attachPreviousDecl(
3597 *this, FirstLocal, PrevMostRecent ? PrevMostRecent : CanonDecl,
3602 ASTDeclReader::attachLatestDecl(CanonDecl, FirstLocal);
3606 // Load the list of other redeclarations from this module file.
3607 ModuleFile *M = getOwningModuleFile(FirstLocal);
3608 assert(M && "imported decl from no module file");
3610 llvm::BitstreamCursor &Cursor = M->DeclsCursor;
3611 SavedStreamPosition SavedPosition(Cursor);
3612 Cursor.JumpToBit(LocalOffset);
3615 unsigned Code = Cursor.ReadCode();
3616 unsigned RecCode = Cursor.readRecord(Code, Record);
3618 assert(RecCode == LOCAL_REDECLARATIONS && "expected LOCAL_REDECLARATIONS record!");
3620 // FIXME: We have several different dispatches on decl kind here; maybe
3621 // we should instead generate one loop per kind and dispatch up-front?
3622 Decl *MostRecent = FirstLocal;
3623 for (unsigned I = 0, N = Record.size(); I != N; ++I) {
3624 auto *D = GetLocalDecl(*M, Record[N - I - 1]);
3625 ASTDeclReader::attachPreviousDecl(*this, D, MostRecent, CanonDecl);
3628 ASTDeclReader::attachLatestDecl(CanonDecl, MostRecent);
3632 /// \brief Given an ObjC interface, goes through the modules and links to the
3633 /// interface all the categories for it.
3634 class ObjCCategoriesVisitor {
3636 ObjCInterfaceDecl *Interface;
3637 llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized;
3638 ObjCCategoryDecl *Tail;
3639 llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap;
3640 serialization::GlobalDeclID InterfaceID;
3641 unsigned PreviousGeneration;
3643 void add(ObjCCategoryDecl *Cat) {
3644 // Only process each category once.
3645 if (!Deserialized.erase(Cat))
3648 // Check for duplicate categories.
3649 if (Cat->getDeclName()) {
3650 ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];
3652 Reader.getOwningModuleFile(Existing)
3653 != Reader.getOwningModuleFile(Cat)) {
3654 // FIXME: We should not warn for duplicates in diamond:
3662 // If there are duplicates in ML/MR, there will be warning when
3663 // creating MB *and* when importing MB. We should not warn when
3665 Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def)
3666 << Interface->getDeclName() << Cat->getDeclName();
3667 Reader.Diag(Existing->getLocation(), diag::note_previous_definition);
3668 } else if (!Existing) {
3669 // Record this category.
3674 // Add this category to the end of the chain.
3676 ASTDeclReader::setNextObjCCategory(Tail, Cat);
3678 Interface->setCategoryListRaw(Cat);
3683 ObjCCategoriesVisitor(ASTReader &Reader,
3684 ObjCInterfaceDecl *Interface,
3685 llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized,
3686 serialization::GlobalDeclID InterfaceID,
3687 unsigned PreviousGeneration)
3688 : Reader(Reader), Interface(Interface), Deserialized(Deserialized),
3689 Tail(nullptr), InterfaceID(InterfaceID),
3690 PreviousGeneration(PreviousGeneration)
3692 // Populate the name -> category map with the set of known categories.
3693 for (auto *Cat : Interface->known_categories()) {
3694 if (Cat->getDeclName())
3695 NameCategoryMap[Cat->getDeclName()] = Cat;
3697 // Keep track of the tail of the category list.
3702 bool operator()(ModuleFile &M) {
3703 // If we've loaded all of the category information we care about from
3704 // this module file, we're done.
3705 if (M.Generation <= PreviousGeneration)
3708 // Map global ID of the definition down to the local ID used in this
3709 // module file. If there is no such mapping, we'll find nothing here
3710 // (or in any module it imports).
3711 DeclID LocalID = Reader.mapGlobalIDToModuleFileGlobalID(M, InterfaceID);
3715 // Perform a binary search to find the local redeclarations for this
3716 // declaration (if any).
3717 const ObjCCategoriesInfo Compare = { LocalID, 0 };
3718 const ObjCCategoriesInfo *Result
3719 = std::lower_bound(M.ObjCCategoriesMap,
3720 M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap,
3722 if (Result == M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap ||
3723 Result->DefinitionID != LocalID) {
3724 // We didn't find anything. If the class definition is in this module
3725 // file, then the module files it depends on cannot have any categories,
3726 // so suppress further lookup.
3727 return Reader.isDeclIDFromModule(InterfaceID, M);
3730 // We found something. Dig out all of the categories.
3731 unsigned Offset = Result->Offset;
3732 unsigned N = M.ObjCCategories[Offset];
3733 M.ObjCCategories[Offset++] = 0; // Don't try to deserialize again
3734 for (unsigned I = 0; I != N; ++I)
3735 add(cast_or_null<ObjCCategoryDecl>(
3736 Reader.GetLocalDecl(M, M.ObjCCategories[Offset++])));
3740 } // end anonymous namespace
3742 void ASTReader::loadObjCCategories(serialization::GlobalDeclID ID,
3743 ObjCInterfaceDecl *D,
3744 unsigned PreviousGeneration) {
3745 ObjCCategoriesVisitor Visitor(*this, D, CategoriesDeserialized, ID,
3746 PreviousGeneration);
3747 ModuleMgr.visit(Visitor);
3750 template<typename DeclT, typename Fn>
3751 static void forAllLaterRedecls(DeclT *D, Fn F) {
3754 // Check whether we've already merged D into its redeclaration chain.
3755 // MostRecent may or may not be nullptr if D has not been merged. If
3756 // not, walk the merged redecl chain and see if it's there.
3757 auto *MostRecent = D->getMostRecentDecl();
3759 for (auto *Redecl = MostRecent; Redecl && !Found;
3760 Redecl = Redecl->getPreviousDecl())
3761 Found = (Redecl == D);
3763 // If this declaration is merged, apply the functor to all later decls.
3765 for (auto *Redecl = MostRecent; Redecl != D;
3766 Redecl = Redecl->getPreviousDecl())
3771 void ASTDeclReader::UpdateDecl(Decl *D) {
3772 while (Record.getIdx() < Record.size()) {
3773 switch ((DeclUpdateKind)Record.readInt()) {
3774 case UPD_CXX_ADDED_IMPLICIT_MEMBER: {
3775 auto *RD = cast<CXXRecordDecl>(D);
3776 // FIXME: If we also have an update record for instantiating the
3777 // definition of D, we need that to happen before we get here.
3778 Decl *MD = Record.readDecl();
3779 assert(MD && "couldn't read decl from update record");
3780 // FIXME: We should call addHiddenDecl instead, to add the member
3781 // to its DeclContext.
3782 RD->addedMember(MD);
3786 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
3787 // It will be added to the template's specializations set when loaded.
3788 (void)Record.readDecl();
3791 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE: {
3792 NamespaceDecl *Anon = ReadDeclAs<NamespaceDecl>();
3794 // Each module has its own anonymous namespace, which is disjoint from
3795 // any other module's anonymous namespaces, so don't attach the anonymous
3796 // namespace at all.
3797 if (!Record.isModule()) {
3798 if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(D))
3799 TU->setAnonymousNamespace(Anon);
3801 cast<NamespaceDecl>(D)->setAnonymousNamespace(Anon);
3806 case UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER:
3807 cast<VarDecl>(D)->getMemberSpecializationInfo()->setPointOfInstantiation(
3808 ReadSourceLocation());
3811 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT: {
3812 auto Param = cast<ParmVarDecl>(D);
3814 // We have to read the default argument regardless of whether we use it
3815 // so that hypothetical further update records aren't messed up.
3816 // TODO: Add a function to skip over the next expr record.
3817 auto DefaultArg = Record.readExpr();
3819 // Only apply the update if the parameter still has an uninstantiated
3820 // default argument.
3821 if (Param->hasUninstantiatedDefaultArg())
3822 Param->setDefaultArg(DefaultArg);
3826 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER: {
3827 auto FD = cast<FieldDecl>(D);
3828 auto DefaultInit = Record.readExpr();
3830 // Only apply the update if the field still has an uninstantiated
3831 // default member initializer.
3832 if (FD->hasInClassInitializer() && !FD->getInClassInitializer()) {
3834 FD->setInClassInitializer(DefaultInit);
3836 // Instantiation failed. We can get here if we serialized an AST for
3837 // an invalid program.
3838 FD->removeInClassInitializer();
3843 case UPD_CXX_ADDED_FUNCTION_DEFINITION: {
3844 FunctionDecl *FD = cast<FunctionDecl>(D);
3845 if (Reader.PendingBodies[FD]) {
3846 // FIXME: Maybe check for ODR violations.
3847 // It's safe to stop now because this update record is always last.
3851 if (Record.readInt()) {
3852 // Maintain AST consistency: any later redeclarations of this function
3853 // are inline if this one is. (We might have merged another declaration
3855 forAllLaterRedecls(FD, [](FunctionDecl *FD) {
3856 FD->setImplicitlyInline();
3859 FD->setInnerLocStart(ReadSourceLocation());
3860 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
3861 CD->NumCtorInitializers = Record.readInt();
3862 if (CD->NumCtorInitializers)
3863 CD->CtorInitializers = ReadGlobalOffset();
3865 // Store the offset of the body so we can lazily load it later.
3866 Reader.PendingBodies[FD] = GetCurrentCursorOffset();
3867 HasPendingBody = true;
3868 assert(Record.getIdx() == Record.size() && "lazy body must be last");
3872 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
3873 auto *RD = cast<CXXRecordDecl>(D);
3874 auto *OldDD = RD->getCanonicalDecl()->DefinitionData;
3875 bool HadRealDefinition =
3876 OldDD && (OldDD->Definition != RD ||
3877 !Reader.PendingFakeDefinitionData.count(OldDD));
3878 ReadCXXRecordDefinition(RD, /*Update*/true);
3880 // Visible update is handled separately.
3881 uint64_t LexicalOffset = ReadLocalOffset();
3882 if (!HadRealDefinition && LexicalOffset) {
3883 Record.readLexicalDeclContextStorage(LexicalOffset, RD);
3884 Reader.PendingFakeDefinitionData.erase(OldDD);
3887 auto TSK = (TemplateSpecializationKind)Record.readInt();
3888 SourceLocation POI = ReadSourceLocation();
3889 if (MemberSpecializationInfo *MSInfo =
3890 RD->getMemberSpecializationInfo()) {
3891 MSInfo->setTemplateSpecializationKind(TSK);
3892 MSInfo->setPointOfInstantiation(POI);
3894 ClassTemplateSpecializationDecl *Spec =
3895 cast<ClassTemplateSpecializationDecl>(RD);
3896 Spec->setTemplateSpecializationKind(TSK);
3897 Spec->setPointOfInstantiation(POI);
3899 if (Record.readInt()) {
3901 ReadDeclAs<ClassTemplatePartialSpecializationDecl>();
3902 SmallVector<TemplateArgument, 8> TemplArgs;
3903 Record.readTemplateArgumentList(TemplArgs);
3904 auto *TemplArgList = TemplateArgumentList::CreateCopy(
3905 Reader.getContext(), TemplArgs);
3907 // FIXME: If we already have a partial specialization set,
3908 // check that it matches.
3909 if (!Spec->getSpecializedTemplateOrPartial()
3910 .is<ClassTemplatePartialSpecializationDecl *>())
3911 Spec->setInstantiationOf(PartialSpec, TemplArgList);
3915 RD->setTagKind((TagTypeKind)Record.readInt());
3916 RD->setLocation(ReadSourceLocation());
3917 RD->setLocStart(ReadSourceLocation());
3918 RD->setBraceRange(ReadSourceRange());
3920 if (Record.readInt()) {
3922 Record.readAttributes(Attrs);
3923 // If the declaration already has attributes, we assume that some other
3924 // AST file already loaded them.
3926 D->setAttrsImpl(Attrs, Reader.getContext());
3931 case UPD_CXX_RESOLVED_DTOR_DELETE: {
3932 // Set the 'operator delete' directly to avoid emitting another update
3934 auto *Del = ReadDeclAs<FunctionDecl>();
3935 auto *First = cast<CXXDestructorDecl>(D->getCanonicalDecl());
3936 // FIXME: Check consistency if we have an old and new operator delete.
3937 if (!First->OperatorDelete)
3938 First->OperatorDelete = Del;
3942 case UPD_CXX_RESOLVED_EXCEPTION_SPEC: {
3943 FunctionProtoType::ExceptionSpecInfo ESI;
3944 SmallVector<QualType, 8> ExceptionStorage;
3945 Record.readExceptionSpec(ExceptionStorage, ESI);
3947 // Update this declaration's exception specification, if needed.
3948 auto *FD = cast<FunctionDecl>(D);
3949 auto *FPT = FD->getType()->castAs<FunctionProtoType>();
3950 // FIXME: If the exception specification is already present, check that it
3952 if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) {
3953 FD->setType(Reader.Context.getFunctionType(
3954 FPT->getReturnType(), FPT->getParamTypes(),
3955 FPT->getExtProtoInfo().withExceptionSpec(ESI)));
3957 // When we get to the end of deserializing, see if there are other decls
3958 // that we need to propagate this exception specification onto.
3959 Reader.PendingExceptionSpecUpdates.insert(
3960 std::make_pair(FD->getCanonicalDecl(), FD));
3965 case UPD_CXX_DEDUCED_RETURN_TYPE: {
3966 // FIXME: Also do this when merging redecls.
3967 QualType DeducedResultType = Record.readType();
3968 for (auto *Redecl : merged_redecls(D)) {
3969 // FIXME: If the return type is already deduced, check that it matches.
3970 FunctionDecl *FD = cast<FunctionDecl>(Redecl);
3971 Reader.Context.adjustDeducedFunctionResultType(FD, DeducedResultType);
3976 case UPD_DECL_MARKED_USED: {
3977 // Maintain AST consistency: any later redeclarations are used too.
3978 D->markUsed(Reader.Context);
3982 case UPD_MANGLING_NUMBER:
3983 Reader.Context.setManglingNumber(cast<NamedDecl>(D), Record.readInt());
3986 case UPD_STATIC_LOCAL_NUMBER:
3987 Reader.Context.setStaticLocalNumber(cast<VarDecl>(D), Record.readInt());
3990 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
3991 D->addAttr(OMPThreadPrivateDeclAttr::CreateImplicit(
3992 Reader.Context, ReadSourceRange()));
3995 case UPD_DECL_EXPORTED: {
3996 unsigned SubmoduleID = readSubmoduleID();
3997 auto *Exported = cast<NamedDecl>(D);
3998 if (auto *TD = dyn_cast<TagDecl>(Exported))
3999 Exported = TD->getDefinition();
4000 Module *Owner = SubmoduleID ? Reader.getSubmodule(SubmoduleID) : nullptr;
4001 if (Reader.getContext().getLangOpts().ModulesLocalVisibility) {
4002 Reader.getContext().mergeDefinitionIntoModule(cast<NamedDecl>(Exported),
4004 Reader.PendingMergedDefinitionsToDeduplicate.insert(
4005 cast<NamedDecl>(Exported));
4006 } else if (Owner && Owner->NameVisibility != Module::AllVisible) {
4007 // If Owner is made visible at some later point, make this declaration
4009 Reader.HiddenNamesMap[Owner].push_back(Exported);
4011 // The declaration is now visible.
4012 Exported->Hidden = false;
4017 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
4018 case UPD_ADDED_ATTR_TO_RECORD:
4020 Record.readAttributes(Attrs);
4021 assert(Attrs.size() == 1);
4022 D->addAttr(Attrs[0]);