clang  7.0.0svn
ASTReaderDecl.cpp
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1 //===--- ASTReaderDecl.cpp - Decl Deserialization ---------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the ASTReader::ReadDeclRecord method, which is the
11 // entrypoint for loading a decl.
12 //
13 //===----------------------------------------------------------------------===//
14 
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"
26 #include "llvm/Support/SaveAndRestore.h"
27 
28 using namespace clang;
29 using namespace clang::serialization;
30 
31 //===----------------------------------------------------------------------===//
32 // Declaration deserialization
33 //===----------------------------------------------------------------------===//
34 
35 namespace clang {
36  class ASTDeclReader : public DeclVisitor<ASTDeclReader, void> {
37  ASTReader &Reader;
38  ASTRecordReader &Record;
39  ASTReader::RecordLocation Loc;
40  const DeclID ThisDeclID;
41  const SourceLocation ThisDeclLoc;
43  TypeID TypeIDForTypeDecl;
44  unsigned AnonymousDeclNumber;
45  GlobalDeclID NamedDeclForTagDecl;
46  IdentifierInfo *TypedefNameForLinkage;
47 
48  bool HasPendingBody;
49 
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;
54 
55  uint64_t GetCurrentCursorOffset();
56 
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;
61  }
62 
63  uint64_t ReadGlobalOffset() {
64  uint64_t Local = ReadLocalOffset();
65  return Local ? Record.getGlobalBitOffset(Local) : 0;
66  }
67 
68  SourceLocation ReadSourceLocation() {
69  return Record.readSourceLocation();
70  }
71 
72  SourceRange ReadSourceRange() {
73  return Record.readSourceRange();
74  }
75 
76  TypeSourceInfo *GetTypeSourceInfo() {
77  return Record.getTypeSourceInfo();
78  }
79 
80  serialization::DeclID ReadDeclID() {
81  return Record.readDeclID();
82  }
83 
84  std::string ReadString() {
85  return Record.readString();
86  }
87 
88  void ReadDeclIDList(SmallVectorImpl<DeclID> &IDs) {
89  for (unsigned I = 0, Size = Record.readInt(); I != Size; ++I)
90  IDs.push_back(ReadDeclID());
91  }
92 
93  Decl *ReadDecl() {
94  return Record.readDecl();
95  }
96 
97  template<typename T>
98  T *ReadDeclAs() {
99  return Record.readDeclAs<T>();
100  }
101 
102  void ReadQualifierInfo(QualifierInfo &Info) {
103  Record.readQualifierInfo(Info);
104  }
105 
106  void ReadDeclarationNameLoc(DeclarationNameLoc &DNLoc, DeclarationName Name) {
107  Record.readDeclarationNameLoc(DNLoc, Name);
108  }
109 
110  serialization::SubmoduleID readSubmoduleID() {
111  if (Record.getIdx() == Record.size())
112  return 0;
113 
114  return Record.getGlobalSubmoduleID(Record.readInt());
115  }
116 
117  Module *readModule() {
118  return Record.getSubmodule(readSubmoduleID());
119  }
120 
121  void ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update);
122  void ReadCXXDefinitionData(struct CXXRecordDecl::DefinitionData &Data,
123  const CXXRecordDecl *D);
124  void MergeDefinitionData(CXXRecordDecl *D,
125  struct CXXRecordDecl::DefinitionData &&NewDD);
126  void ReadObjCDefinitionData(struct ObjCInterfaceDecl::DefinitionData &Data);
127  void MergeDefinitionData(ObjCInterfaceDecl *D,
128  struct ObjCInterfaceDecl::DefinitionData &&NewDD);
129  void ReadObjCDefinitionData(struct ObjCProtocolDecl::DefinitionData &Data);
130  void MergeDefinitionData(ObjCProtocolDecl *D,
131  struct ObjCProtocolDecl::DefinitionData &&NewDD);
132 
133  static NamedDecl *getAnonymousDeclForMerging(ASTReader &Reader,
134  DeclContext *DC,
135  unsigned Index);
136  static void setAnonymousDeclForMerging(ASTReader &Reader, DeclContext *DC,
137  unsigned Index, NamedDecl *D);
138 
139  /// Results from loading a RedeclarableDecl.
140  class RedeclarableResult {
141  Decl *MergeWith;
142  GlobalDeclID FirstID;
143  bool IsKeyDecl;
144 
145  public:
146  RedeclarableResult(Decl *MergeWith, GlobalDeclID FirstID, bool IsKeyDecl)
147  : MergeWith(MergeWith), FirstID(FirstID), IsKeyDecl(IsKeyDecl) {}
148 
149  /// \brief Retrieve the first ID.
150  GlobalDeclID getFirstID() const { return FirstID; }
151 
152  /// \brief Is this declaration a key declaration?
153  bool isKeyDecl() const { return IsKeyDecl; }
154 
155  /// \brief Get a known declaration that this should be merged with, if
156  /// any.
157  Decl *getKnownMergeTarget() const { return MergeWith; }
158  };
159 
160  /// \brief Class used to capture the result of searching for an existing
161  /// declaration of a specific kind and name, along with the ability
162  /// to update the place where this result was found (the declaration
163  /// chain hanging off an identifier or the DeclContext we searched in)
164  /// if requested.
165  class FindExistingResult {
166  ASTReader &Reader;
167  NamedDecl *New;
168  NamedDecl *Existing;
169  bool AddResult;
170 
171  unsigned AnonymousDeclNumber;
172  IdentifierInfo *TypedefNameForLinkage;
173 
174  void operator=(FindExistingResult &&) = delete;
175 
176  public:
177  FindExistingResult(ASTReader &Reader)
178  : Reader(Reader), New(nullptr), Existing(nullptr), AddResult(false),
179  AnonymousDeclNumber(0), TypedefNameForLinkage(nullptr) {}
180 
181  FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing,
182  unsigned AnonymousDeclNumber,
183  IdentifierInfo *TypedefNameForLinkage)
184  : Reader(Reader), New(New), Existing(Existing), AddResult(true),
185  AnonymousDeclNumber(AnonymousDeclNumber),
186  TypedefNameForLinkage(TypedefNameForLinkage) {}
187 
188  FindExistingResult(FindExistingResult &&Other)
189  : Reader(Other.Reader), New(Other.New), Existing(Other.Existing),
190  AddResult(Other.AddResult),
191  AnonymousDeclNumber(Other.AnonymousDeclNumber),
192  TypedefNameForLinkage(Other.TypedefNameForLinkage) {
193  Other.AddResult = false;
194  }
195 
196  ~FindExistingResult();
197 
198  /// \brief Suppress the addition of this result into the known set of
199  /// names.
200  void suppress() { AddResult = false; }
201 
202  operator NamedDecl*() const { return Existing; }
203 
204  template<typename T>
205  operator T*() const { return dyn_cast_or_null<T>(Existing); }
206  };
207 
208  static DeclContext *getPrimaryContextForMerging(ASTReader &Reader,
209  DeclContext *DC);
210  FindExistingResult findExisting(NamedDecl *D);
211 
212  public:
214  ASTReader::RecordLocation Loc,
215  DeclID thisDeclID, SourceLocation ThisDeclLoc)
216  : Reader(Reader), Record(Record), Loc(Loc),
217  ThisDeclID(thisDeclID), ThisDeclLoc(ThisDeclLoc),
218  TypeIDForTypeDecl(0), NamedDeclForTagDecl(0),
219  TypedefNameForLinkage(nullptr), HasPendingBody(false),
220  IsDeclMarkedUsed(false) {}
221 
222  template <typename T> static
225  if (IDs.empty())
226  return;
227 
228  // FIXME: We should avoid this pattern of getting the ASTContext.
229  ASTContext &C = D->getASTContext();
230 
231  auto *&LazySpecializations = D->getCommonPtr()->LazySpecializations;
232 
233  if (auto &Old = LazySpecializations) {
234  IDs.insert(IDs.end(), Old + 1, Old + 1 + Old[0]);
235  std::sort(IDs.begin(), IDs.end());
236  IDs.erase(std::unique(IDs.begin(), IDs.end()), IDs.end());
237  }
238 
239  auto *Result = new (C) serialization::DeclID[1 + IDs.size()];
240  *Result = IDs.size();
241  std::copy(IDs.begin(), IDs.end(), Result + 1);
242 
243  LazySpecializations = Result;
244  }
245 
246  template <typename DeclT>
247  static Decl *getMostRecentDeclImpl(Redeclarable<DeclT> *D);
248  static Decl *getMostRecentDeclImpl(...);
249  static Decl *getMostRecentDecl(Decl *D);
250 
251  template <typename DeclT>
252  static void attachPreviousDeclImpl(ASTReader &Reader,
254  Decl *Canon);
255  static void attachPreviousDeclImpl(ASTReader &Reader, ...);
256  static void attachPreviousDecl(ASTReader &Reader, Decl *D, Decl *Previous,
257  Decl *Canon);
258 
259  template <typename DeclT>
260  static void attachLatestDeclImpl(Redeclarable<DeclT> *D, Decl *Latest);
261  static void attachLatestDeclImpl(...);
262  static void attachLatestDecl(Decl *D, Decl *latest);
263 
264  template <typename DeclT>
265  static void markIncompleteDeclChainImpl(Redeclarable<DeclT> *D);
266  static void markIncompleteDeclChainImpl(...);
267 
268  /// \brief Determine whether this declaration has a pending body.
269  bool hasPendingBody() const { return HasPendingBody; }
270 
271  void ReadFunctionDefinition(FunctionDecl *FD);
272  void Visit(Decl *D);
273 
275 
277  ObjCCategoryDecl *Next) {
278  Cat->NextClassCategory = Next;
279  }
280 
281  void VisitDecl(Decl *D);
282  void VisitPragmaCommentDecl(PragmaCommentDecl *D);
283  void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D);
284  void VisitTranslationUnitDecl(TranslationUnitDecl *TU);
285  void VisitNamedDecl(NamedDecl *ND);
286  void VisitLabelDecl(LabelDecl *LD);
287  void VisitNamespaceDecl(NamespaceDecl *D);
288  void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
289  void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
290  void VisitTypeDecl(TypeDecl *TD);
291  RedeclarableResult VisitTypedefNameDecl(TypedefNameDecl *TD);
292  void VisitTypedefDecl(TypedefDecl *TD);
293  void VisitTypeAliasDecl(TypeAliasDecl *TD);
294  void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
295  RedeclarableResult VisitTagDecl(TagDecl *TD);
296  void VisitEnumDecl(EnumDecl *ED);
297  RedeclarableResult VisitRecordDeclImpl(RecordDecl *RD);
298  void VisitRecordDecl(RecordDecl *RD) { VisitRecordDeclImpl(RD); }
299  RedeclarableResult VisitCXXRecordDeclImpl(CXXRecordDecl *D);
300  void VisitCXXRecordDecl(CXXRecordDecl *D) { VisitCXXRecordDeclImpl(D); }
301  RedeclarableResult VisitClassTemplateSpecializationDeclImpl(
305  VisitClassTemplateSpecializationDeclImpl(D);
306  }
307  void VisitClassTemplatePartialSpecializationDecl(
309  void VisitClassScopeFunctionSpecializationDecl(
311  RedeclarableResult
312  VisitVarTemplateSpecializationDeclImpl(VarTemplateSpecializationDecl *D);
314  VisitVarTemplateSpecializationDeclImpl(D);
315  }
316  void VisitVarTemplatePartialSpecializationDecl(
318  void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
319  void VisitValueDecl(ValueDecl *VD);
320  void VisitEnumConstantDecl(EnumConstantDecl *ECD);
321  void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
322  void VisitDeclaratorDecl(DeclaratorDecl *DD);
323  void VisitFunctionDecl(FunctionDecl *FD);
324  void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *GD);
325  void VisitCXXMethodDecl(CXXMethodDecl *D);
326  void VisitCXXConstructorDecl(CXXConstructorDecl *D);
327  void VisitCXXDestructorDecl(CXXDestructorDecl *D);
328  void VisitCXXConversionDecl(CXXConversionDecl *D);
329  void VisitFieldDecl(FieldDecl *FD);
330  void VisitMSPropertyDecl(MSPropertyDecl *FD);
331  void VisitIndirectFieldDecl(IndirectFieldDecl *FD);
332  RedeclarableResult VisitVarDeclImpl(VarDecl *D);
333  void VisitVarDecl(VarDecl *VD) { VisitVarDeclImpl(VD); }
334  void VisitImplicitParamDecl(ImplicitParamDecl *PD);
335  void VisitParmVarDecl(ParmVarDecl *PD);
336  void VisitDecompositionDecl(DecompositionDecl *DD);
337  void VisitBindingDecl(BindingDecl *BD);
338  void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
339  DeclID VisitTemplateDecl(TemplateDecl *D);
340  RedeclarableResult VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
341  void VisitClassTemplateDecl(ClassTemplateDecl *D);
342  void VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D);
343  void VisitVarTemplateDecl(VarTemplateDecl *D);
344  void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
345  void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
346  void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
347  void VisitUsingDecl(UsingDecl *D);
348  void VisitUsingPackDecl(UsingPackDecl *D);
349  void VisitUsingShadowDecl(UsingShadowDecl *D);
350  void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
351  void VisitLinkageSpecDecl(LinkageSpecDecl *D);
352  void VisitExportDecl(ExportDecl *D);
353  void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
354  void VisitImportDecl(ImportDecl *D);
355  void VisitAccessSpecDecl(AccessSpecDecl *D);
356  void VisitFriendDecl(FriendDecl *D);
357  void VisitFriendTemplateDecl(FriendTemplateDecl *D);
358  void VisitStaticAssertDecl(StaticAssertDecl *D);
359  void VisitBlockDecl(BlockDecl *BD);
360  void VisitCapturedDecl(CapturedDecl *CD);
361  void VisitEmptyDecl(EmptyDecl *D);
362 
363  std::pair<uint64_t, uint64_t> VisitDeclContext(DeclContext *DC);
364 
365  template<typename T>
366  RedeclarableResult VisitRedeclarable(Redeclarable<T> *D);
367 
368  template<typename T>
369  void mergeRedeclarable(Redeclarable<T> *D, RedeclarableResult &Redecl,
370  DeclID TemplatePatternID = 0);
371 
372  template<typename T>
373  void mergeRedeclarable(Redeclarable<T> *D, T *Existing,
374  RedeclarableResult &Redecl,
375  DeclID TemplatePatternID = 0);
376 
377  template<typename T>
378  void mergeMergeable(Mergeable<T> *D);
379 
380  void mergeTemplatePattern(RedeclarableTemplateDecl *D,
381  RedeclarableTemplateDecl *Existing,
382  DeclID DsID, bool IsKeyDecl);
383 
384  ObjCTypeParamList *ReadObjCTypeParamList();
385 
386  // FIXME: Reorder according to DeclNodes.td?
387  void VisitObjCMethodDecl(ObjCMethodDecl *D);
388  void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
389  void VisitObjCContainerDecl(ObjCContainerDecl *D);
390  void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
391  void VisitObjCIvarDecl(ObjCIvarDecl *D);
392  void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
393  void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
394  void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
395  void VisitObjCImplDecl(ObjCImplDecl *D);
396  void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
397  void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
398  void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
399  void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
400  void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
401  void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
402  void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
403  void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
404  };
405 } // end namespace clang
406 
407 namespace {
408 /// Iterator over the redeclarations of a declaration that have already
409 /// been merged into the same redeclaration chain.
410 template<typename DeclT>
411 class MergedRedeclIterator {
412  DeclT *Start, *Canonical, *Current;
413 public:
414  MergedRedeclIterator() : Current(nullptr) {}
415  MergedRedeclIterator(DeclT *Start)
416  : Start(Start), Canonical(nullptr), Current(Start) {}
417 
418  DeclT *operator*() { return Current; }
419 
420  MergedRedeclIterator &operator++() {
421  if (Current->isFirstDecl()) {
422  Canonical = Current;
423  Current = Current->getMostRecentDecl();
424  } else
425  Current = Current->getPreviousDecl();
426 
427  // If we started in the merged portion, we'll reach our start position
428  // eventually. Otherwise, we'll never reach it, but the second declaration
429  // we reached was the canonical declaration, so stop when we see that one
430  // again.
431  if (Current == Start || Current == Canonical)
432  Current = nullptr;
433  return *this;
434  }
435 
436  friend bool operator!=(const MergedRedeclIterator &A,
437  const MergedRedeclIterator &B) {
438  return A.Current != B.Current;
439  }
440 };
441 } // end anonymous namespace
442 
443 template <typename DeclT>
444 static llvm::iterator_range<MergedRedeclIterator<DeclT>>
445 merged_redecls(DeclT *D) {
446  return llvm::make_range(MergedRedeclIterator<DeclT>(D),
447  MergedRedeclIterator<DeclT>());
448 }
449 
450 uint64_t ASTDeclReader::GetCurrentCursorOffset() {
451  return Loc.F->DeclsCursor.GetCurrentBitNo() + Loc.F->GlobalBitOffset;
452 }
453 
455  if (Record.readInt())
456  Reader.DefinitionSource[FD] = Loc.F->Kind == ModuleKind::MK_MainFile;
457  if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
458  CD->NumCtorInitializers = Record.readInt();
459  if (CD->NumCtorInitializers)
460  CD->CtorInitializers = ReadGlobalOffset();
461  }
462  // Store the offset of the body so we can lazily load it later.
463  Reader.PendingBodies[FD] = GetCurrentCursorOffset();
464  HasPendingBody = true;
465 }
466 
469 
470  // At this point we have deserialized and merged the decl and it is safe to
471  // update its canonical decl to signal that the entire entity is used.
472  D->getCanonicalDecl()->Used |= IsDeclMarkedUsed;
473  IsDeclMarkedUsed = false;
474 
475  if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
476  if (DD->DeclInfo) {
477  DeclaratorDecl::ExtInfo *Info =
478  DD->DeclInfo.get<DeclaratorDecl::ExtInfo *>();
479  Info->TInfo = GetTypeSourceInfo();
480  }
481  else {
482  DD->DeclInfo = GetTypeSourceInfo();
483  }
484  }
485 
486  if (TypeDecl *TD = dyn_cast<TypeDecl>(D)) {
487  // We have a fully initialized TypeDecl. Read its type now.
488  TD->setTypeForDecl(Reader.GetType(TypeIDForTypeDecl).getTypePtrOrNull());
489 
490  // If this is a tag declaration with a typedef name for linkage, it's safe
491  // to load that typedef now.
492  if (NamedDeclForTagDecl)
493  cast<TagDecl>(D)->TypedefNameDeclOrQualifier =
494  cast<TypedefNameDecl>(Reader.GetDecl(NamedDeclForTagDecl));
495  } else if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
496  // if we have a fully initialized TypeDecl, we can safely read its type now.
497  ID->TypeForDecl = Reader.GetType(TypeIDForTypeDecl).getTypePtrOrNull();
498  } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
499  // FunctionDecl's body was written last after all other Stmts/Exprs.
500  // We only read it if FD doesn't already have a body (e.g., from another
501  // module).
502  // FIXME: Can we diagnose ODR violations somehow?
503  if (Record.readInt())
504  ReadFunctionDefinition(FD);
505  }
506 }
507 
509  if (D->isTemplateParameter() || D->isTemplateParameterPack() ||
510  isa<ParmVarDecl>(D)) {
511  // We don't want to deserialize the DeclContext of a template
512  // parameter or of a parameter of a function template immediately. These
513  // entities might be used in the formulation of its DeclContext (for
514  // example, a function parameter can be used in decltype() in trailing
515  // return type of the function). Use the translation unit DeclContext as a
516  // placeholder.
517  GlobalDeclID SemaDCIDForTemplateParmDecl = ReadDeclID();
518  GlobalDeclID LexicalDCIDForTemplateParmDecl = ReadDeclID();
519  if (!LexicalDCIDForTemplateParmDecl)
520  LexicalDCIDForTemplateParmDecl = SemaDCIDForTemplateParmDecl;
521  Reader.addPendingDeclContextInfo(D,
522  SemaDCIDForTemplateParmDecl,
523  LexicalDCIDForTemplateParmDecl);
524  D->setDeclContext(Reader.getContext().getTranslationUnitDecl());
525  } else {
526  DeclContext *SemaDC = ReadDeclAs<DeclContext>();
527  DeclContext *LexicalDC = ReadDeclAs<DeclContext>();
528  if (!LexicalDC)
529  LexicalDC = SemaDC;
530  DeclContext *MergedSemaDC = Reader.MergedDeclContexts.lookup(SemaDC);
531  // Avoid calling setLexicalDeclContext() directly because it uses
532  // Decl::getASTContext() internally which is unsafe during derialization.
533  D->setDeclContextsImpl(MergedSemaDC ? MergedSemaDC : SemaDC, LexicalDC,
534  Reader.getContext());
535  }
536  D->setLocation(ThisDeclLoc);
537  D->setInvalidDecl(Record.readInt());
538  if (Record.readInt()) { // hasAttrs
539  AttrVec Attrs;
540  Record.readAttributes(Attrs);
541  // Avoid calling setAttrs() directly because it uses Decl::getASTContext()
542  // internally which is unsafe during derialization.
543  D->setAttrsImpl(Attrs, Reader.getContext());
544  }
545  D->setImplicit(Record.readInt());
546  D->Used = Record.readInt();
547  IsDeclMarkedUsed |= D->Used;
548  D->setReferenced(Record.readInt());
549  D->setTopLevelDeclInObjCContainer(Record.readInt());
550  D->setAccess((AccessSpecifier)Record.readInt());
551  D->FromASTFile = true;
552  bool ModulePrivate = Record.readInt();
553 
554  // Determine whether this declaration is part of a (sub)module. If so, it
555  // may not yet be visible.
556  if (unsigned SubmoduleID = readSubmoduleID()) {
557  // Store the owning submodule ID in the declaration.
562 
563  if (ModulePrivate) {
564  // Module-private declarations are never visible, so there is no work to
565  // do.
566  } else if (Reader.getContext().getLangOpts().ModulesLocalVisibility) {
567  // If local visibility is being tracked, this declaration will become
568  // hidden and visible as the owning module does.
569  } else if (Module *Owner = Reader.getSubmodule(SubmoduleID)) {
570  // Mark the declaration as visible when its owning module becomes visible.
571  if (Owner->NameVisibility == Module::AllVisible)
573  else
574  Reader.HiddenNamesMap[Owner].push_back(D);
575  }
576  } else if (ModulePrivate) {
578  }
579 }
580 
582  VisitDecl(D);
583  D->setLocation(ReadSourceLocation());
584  D->CommentKind = (PragmaMSCommentKind)Record.readInt();
585  std::string Arg = ReadString();
586  memcpy(D->getTrailingObjects<char>(), Arg.data(), Arg.size());
587  D->getTrailingObjects<char>()[Arg.size()] = '\0';
588 }
589 
591  VisitDecl(D);
592  D->setLocation(ReadSourceLocation());
593  std::string Name = ReadString();
594  memcpy(D->getTrailingObjects<char>(), Name.data(), Name.size());
595  D->getTrailingObjects<char>()[Name.size()] = '\0';
596 
597  D->ValueStart = Name.size() + 1;
598  std::string Value = ReadString();
599  memcpy(D->getTrailingObjects<char>() + D->ValueStart, Value.data(),
600  Value.size());
601  D->getTrailingObjects<char>()[D->ValueStart + Value.size()] = '\0';
602 }
603 
605  llvm_unreachable("Translation units are not serialized");
606 }
607 
609  VisitDecl(ND);
610  ND->setDeclName(Record.readDeclarationName());
611  AnonymousDeclNumber = Record.readInt();
612 }
613 
615  VisitNamedDecl(TD);
616  TD->setLocStart(ReadSourceLocation());
617  // Delay type reading until after we have fully initialized the decl.
618  TypeIDForTypeDecl = Record.getGlobalTypeID(Record.readInt());
619 }
620 
621 ASTDeclReader::RedeclarableResult
623  RedeclarableResult Redecl = VisitRedeclarable(TD);
624  VisitTypeDecl(TD);
625  TypeSourceInfo *TInfo = GetTypeSourceInfo();
626  if (Record.readInt()) { // isModed
627  QualType modedT = Record.readType();
628  TD->setModedTypeSourceInfo(TInfo, modedT);
629  } else
630  TD->setTypeSourceInfo(TInfo);
631  // Read and discard the declaration for which this is a typedef name for
632  // linkage, if it exists. We cannot rely on our type to pull in this decl,
633  // because it might have been merged with a type from another module and
634  // thus might not refer to our version of the declaration.
635  ReadDecl();
636  return Redecl;
637 }
638 
640  RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
641  mergeRedeclarable(TD, Redecl);
642 }
643 
645  RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
646  if (auto *Template = ReadDeclAs<TypeAliasTemplateDecl>())
647  // Merged when we merge the template.
648  TD->setDescribedAliasTemplate(Template);
649  else
650  mergeRedeclarable(TD, Redecl);
651 }
652 
653 ASTDeclReader::RedeclarableResult ASTDeclReader::VisitTagDecl(TagDecl *TD) {
654  RedeclarableResult Redecl = VisitRedeclarable(TD);
655  VisitTypeDecl(TD);
656 
657  TD->IdentifierNamespace = Record.readInt();
658  TD->setTagKind((TagDecl::TagKind)Record.readInt());
659  if (!isa<CXXRecordDecl>(TD))
660  TD->setCompleteDefinition(Record.readInt());
661  TD->setEmbeddedInDeclarator(Record.readInt());
662  TD->setFreeStanding(Record.readInt());
663  TD->setCompleteDefinitionRequired(Record.readInt());
664  TD->setBraceRange(ReadSourceRange());
665 
666  switch (Record.readInt()) {
667  case 0:
668  break;
669  case 1: { // ExtInfo
670  TagDecl::ExtInfo *Info = new (Reader.getContext()) TagDecl::ExtInfo();
671  ReadQualifierInfo(*Info);
672  TD->TypedefNameDeclOrQualifier = Info;
673  break;
674  }
675  case 2: // TypedefNameForAnonDecl
676  NamedDeclForTagDecl = ReadDeclID();
677  TypedefNameForLinkage = Record.getIdentifierInfo();
678  break;
679  default:
680  llvm_unreachable("unexpected tag info kind");
681  }
682 
683  if (!isa<CXXRecordDecl>(TD))
684  mergeRedeclarable(TD, Redecl);
685  return Redecl;
686 }
687 
689  VisitTagDecl(ED);
690  if (TypeSourceInfo *TI = GetTypeSourceInfo())
691  ED->setIntegerTypeSourceInfo(TI);
692  else
693  ED->setIntegerType(Record.readType());
694  ED->setPromotionType(Record.readType());
695  ED->setNumPositiveBits(Record.readInt());
696  ED->setNumNegativeBits(Record.readInt());
697  ED->IsScoped = Record.readInt();
698  ED->IsScopedUsingClassTag = Record.readInt();
699  ED->IsFixed = Record.readInt();
700 
701  // If this is a definition subject to the ODR, and we already have a
702  // definition, merge this one into it.
703  if (ED->IsCompleteDefinition &&
704  Reader.getContext().getLangOpts().Modules &&
705  Reader.getContext().getLangOpts().CPlusPlus) {
706  EnumDecl *&OldDef = Reader.EnumDefinitions[ED->getCanonicalDecl()];
707  if (!OldDef) {
708  // This is the first time we've seen an imported definition. Look for a
709  // local definition before deciding that we are the first definition.
710  for (auto *D : merged_redecls(ED->getCanonicalDecl())) {
711  if (!D->isFromASTFile() && D->isCompleteDefinition()) {
712  OldDef = D;
713  break;
714  }
715  }
716  }
717  if (OldDef) {
718  Reader.MergedDeclContexts.insert(std::make_pair(ED, OldDef));
719  ED->IsCompleteDefinition = false;
720  Reader.mergeDefinitionVisibility(OldDef, ED);
721  } else {
722  OldDef = ED;
723  }
724  }
725 
726  if (EnumDecl *InstED = ReadDeclAs<EnumDecl>()) {
728  (TemplateSpecializationKind)Record.readInt();
729  SourceLocation POI = ReadSourceLocation();
730  ED->setInstantiationOfMemberEnum(Reader.getContext(), InstED, TSK);
732  }
733 }
734 
735 ASTDeclReader::RedeclarableResult
737  RedeclarableResult Redecl = VisitTagDecl(RD);
738  RD->setHasFlexibleArrayMember(Record.readInt());
739  RD->setAnonymousStructOrUnion(Record.readInt());
740  RD->setHasObjectMember(Record.readInt());
741  RD->setHasVolatileMember(Record.readInt());
742  return Redecl;
743 }
744 
746  VisitNamedDecl(VD);
747  VD->setType(Record.readType());
748 }
749 
751  VisitValueDecl(ECD);
752  if (Record.readInt())
753  ECD->setInitExpr(Record.readExpr());
754  ECD->setInitVal(Record.readAPSInt());
755  mergeMergeable(ECD);
756 }
757 
759  VisitValueDecl(DD);
760  DD->setInnerLocStart(ReadSourceLocation());
761  if (Record.readInt()) { // hasExtInfo
762  DeclaratorDecl::ExtInfo *Info
763  = new (Reader.getContext()) DeclaratorDecl::ExtInfo();
764  ReadQualifierInfo(*Info);
765  DD->DeclInfo = Info;
766  }
767 }
768 
770  RedeclarableResult Redecl = VisitRedeclarable(FD);
771  VisitDeclaratorDecl(FD);
772 
773  ReadDeclarationNameLoc(FD->DNLoc, FD->getDeclName());
774  FD->IdentifierNamespace = Record.readInt();
775 
776  // FunctionDecl's body is handled last at ASTDeclReader::Visit,
777  // after everything else is read.
778 
779  FD->SClass = (StorageClass)Record.readInt();
780  FD->IsInline = Record.readInt();
781  FD->IsInlineSpecified = Record.readInt();
782  FD->IsExplicitSpecified = Record.readInt();
783  FD->IsVirtualAsWritten = Record.readInt();
784  FD->IsPure = Record.readInt();
785  FD->HasInheritedPrototype = Record.readInt();
786  FD->HasWrittenPrototype = Record.readInt();
787  FD->IsDeleted = Record.readInt();
788  FD->IsTrivial = Record.readInt();
789  FD->IsTrivialForCall = Record.readInt();
790  FD->IsDefaulted = Record.readInt();
791  FD->IsExplicitlyDefaulted = Record.readInt();
792  FD->HasImplicitReturnZero = Record.readInt();
793  FD->IsConstexpr = Record.readInt();
794  FD->UsesSEHTry = Record.readInt();
795  FD->HasSkippedBody = Record.readInt();
796  FD->IsMultiVersion = Record.readInt();
797  FD->IsLateTemplateParsed = Record.readInt();
798  FD->setCachedLinkage(Linkage(Record.readInt()));
799  FD->EndRangeLoc = ReadSourceLocation();
800 
801  FD->ODRHash = Record.readInt();
802  FD->HasODRHash = true;
803 
804  switch ((FunctionDecl::TemplatedKind)Record.readInt()) {
806  mergeRedeclarable(FD, Redecl);
807  break;
809  // Merged when we merge the template.
810  FD->setDescribedFunctionTemplate(ReadDeclAs<FunctionTemplateDecl>());
811  break;
813  FunctionDecl *InstFD = ReadDeclAs<FunctionDecl>();
815  (TemplateSpecializationKind)Record.readInt();
816  SourceLocation POI = ReadSourceLocation();
817  FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK);
819  mergeRedeclarable(FD, Redecl);
820  break;
821  }
823  FunctionTemplateDecl *Template = ReadDeclAs<FunctionTemplateDecl>();
825  (TemplateSpecializationKind)Record.readInt();
826 
827  // Template arguments.
829  Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
830 
831  // Template args as written.
833  SourceLocation LAngleLoc, RAngleLoc;
834  bool HasTemplateArgumentsAsWritten = Record.readInt();
835  if (HasTemplateArgumentsAsWritten) {
836  unsigned NumTemplateArgLocs = Record.readInt();
837  TemplArgLocs.reserve(NumTemplateArgLocs);
838  for (unsigned i=0; i != NumTemplateArgLocs; ++i)
839  TemplArgLocs.push_back(Record.readTemplateArgumentLoc());
840 
841  LAngleLoc = ReadSourceLocation();
842  RAngleLoc = ReadSourceLocation();
843  }
844 
845  SourceLocation POI = ReadSourceLocation();
846 
847  ASTContext &C = Reader.getContext();
848  TemplateArgumentList *TemplArgList
849  = TemplateArgumentList::CreateCopy(C, TemplArgs);
850  TemplateArgumentListInfo TemplArgsInfo(LAngleLoc, RAngleLoc);
851  for (unsigned i=0, e = TemplArgLocs.size(); i != e; ++i)
852  TemplArgsInfo.addArgument(TemplArgLocs[i]);
854  = FunctionTemplateSpecializationInfo::Create(C, FD, Template, TSK,
855  TemplArgList,
856  HasTemplateArgumentsAsWritten ? &TemplArgsInfo
857  : nullptr,
858  POI);
859  FD->TemplateOrSpecialization = FTInfo;
860 
861  if (FD->isCanonicalDecl()) { // if canonical add to template's set.
862  // The template that contains the specializations set. It's not safe to
863  // use getCanonicalDecl on Template since it may still be initializing.
864  FunctionTemplateDecl *CanonTemplate = ReadDeclAs<FunctionTemplateDecl>();
865  // Get the InsertPos by FindNodeOrInsertPos() instead of calling
866  // InsertNode(FTInfo) directly to avoid the getASTContext() call in
867  // FunctionTemplateSpecializationInfo's Profile().
868  // We avoid getASTContext because a decl in the parent hierarchy may
869  // be initializing.
870  llvm::FoldingSetNodeID ID;
872  void *InsertPos = nullptr;
873  FunctionTemplateDecl::Common *CommonPtr = CanonTemplate->getCommonPtr();
874  FunctionTemplateSpecializationInfo *ExistingInfo =
875  CommonPtr->Specializations.FindNodeOrInsertPos(ID, InsertPos);
876  if (InsertPos)
877  CommonPtr->Specializations.InsertNode(FTInfo, InsertPos);
878  else {
879  assert(Reader.getContext().getLangOpts().Modules &&
880  "already deserialized this template specialization");
881  mergeRedeclarable(FD, ExistingInfo->Function, Redecl);
882  }
883  }
884  break;
885  }
887  // Templates.
888  UnresolvedSet<8> TemplDecls;
889  unsigned NumTemplates = Record.readInt();
890  while (NumTemplates--)
891  TemplDecls.addDecl(ReadDeclAs<NamedDecl>());
892 
893  // Templates args.
894  TemplateArgumentListInfo TemplArgs;
895  unsigned NumArgs = Record.readInt();
896  while (NumArgs--)
897  TemplArgs.addArgument(Record.readTemplateArgumentLoc());
898  TemplArgs.setLAngleLoc(ReadSourceLocation());
899  TemplArgs.setRAngleLoc(ReadSourceLocation());
900 
901  FD->setDependentTemplateSpecialization(Reader.getContext(),
902  TemplDecls, TemplArgs);
903  // These are not merged; we don't need to merge redeclarations of dependent
904  // template friends.
905  break;
906  }
907  }
908 
909  // Read in the parameters.
910  unsigned NumParams = Record.readInt();
912  Params.reserve(NumParams);
913  for (unsigned I = 0; I != NumParams; ++I)
914  Params.push_back(ReadDeclAs<ParmVarDecl>());
915  FD->setParams(Reader.getContext(), Params);
916 }
917 
919  VisitNamedDecl(MD);
920  if (Record.readInt()) {
921  // Load the body on-demand. Most clients won't care, because method
922  // definitions rarely show up in headers.
923  Reader.PendingBodies[MD] = GetCurrentCursorOffset();
924  HasPendingBody = true;
925  MD->setSelfDecl(ReadDeclAs<ImplicitParamDecl>());
926  MD->setCmdDecl(ReadDeclAs<ImplicitParamDecl>());
927  }
928  MD->setInstanceMethod(Record.readInt());
929  MD->setVariadic(Record.readInt());
930  MD->setPropertyAccessor(Record.readInt());
931  MD->setDefined(Record.readInt());
932  MD->IsOverriding = Record.readInt();
933  MD->HasSkippedBody = Record.readInt();
934 
935  MD->IsRedeclaration = Record.readInt();
936  MD->HasRedeclaration = Record.readInt();
937  if (MD->HasRedeclaration)
938  Reader.getContext().setObjCMethodRedeclaration(MD,
939  ReadDeclAs<ObjCMethodDecl>());
940 
942  MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record.readInt());
943  MD->SetRelatedResultType(Record.readInt());
944  MD->setReturnType(Record.readType());
945  MD->setReturnTypeSourceInfo(GetTypeSourceInfo());
946  MD->DeclEndLoc = ReadSourceLocation();
947  unsigned NumParams = Record.readInt();
949  Params.reserve(NumParams);
950  for (unsigned I = 0; I != NumParams; ++I)
951  Params.push_back(ReadDeclAs<ParmVarDecl>());
952 
953  MD->SelLocsKind = Record.readInt();
954  unsigned NumStoredSelLocs = Record.readInt();
956  SelLocs.reserve(NumStoredSelLocs);
957  for (unsigned i = 0; i != NumStoredSelLocs; ++i)
958  SelLocs.push_back(ReadSourceLocation());
959 
960  MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs);
961 }
962 
964  VisitTypedefNameDecl(D);
965 
966  D->Variance = Record.readInt();
967  D->Index = Record.readInt();
968  D->VarianceLoc = ReadSourceLocation();
969  D->ColonLoc = ReadSourceLocation();
970 }
971 
973  VisitNamedDecl(CD);
974  CD->setAtStartLoc(ReadSourceLocation());
975  CD->setAtEndRange(ReadSourceRange());
976 }
977 
979  unsigned numParams = Record.readInt();
980  if (numParams == 0)
981  return nullptr;
982 
984  typeParams.reserve(numParams);
985  for (unsigned i = 0; i != numParams; ++i) {
986  auto typeParam = ReadDeclAs<ObjCTypeParamDecl>();
987  if (!typeParam)
988  return nullptr;
989 
990  typeParams.push_back(typeParam);
991  }
992 
993  SourceLocation lAngleLoc = ReadSourceLocation();
994  SourceLocation rAngleLoc = ReadSourceLocation();
995 
996  return ObjCTypeParamList::create(Reader.getContext(), lAngleLoc,
997  typeParams, rAngleLoc);
998 }
999 
1000 void ASTDeclReader::ReadObjCDefinitionData(
1001  struct ObjCInterfaceDecl::DefinitionData &Data) {
1002  // Read the superclass.
1003  Data.SuperClassTInfo = GetTypeSourceInfo();
1004 
1005  Data.EndLoc = ReadSourceLocation();
1006  Data.HasDesignatedInitializers = Record.readInt();
1007 
1008  // Read the directly referenced protocols and their SourceLocations.
1009  unsigned NumProtocols = Record.readInt();
1011  Protocols.reserve(NumProtocols);
1012  for (unsigned I = 0; I != NumProtocols; ++I)
1013  Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>());
1015  ProtoLocs.reserve(NumProtocols);
1016  for (unsigned I = 0; I != NumProtocols; ++I)
1017  ProtoLocs.push_back(ReadSourceLocation());
1018  Data.ReferencedProtocols.set(Protocols.data(), NumProtocols, ProtoLocs.data(),
1019  Reader.getContext());
1020 
1021  // Read the transitive closure of protocols referenced by this class.
1022  NumProtocols = Record.readInt();
1023  Protocols.clear();
1024  Protocols.reserve(NumProtocols);
1025  for (unsigned I = 0; I != NumProtocols; ++I)
1026  Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>());
1027  Data.AllReferencedProtocols.set(Protocols.data(), NumProtocols,
1028  Reader.getContext());
1029 }
1030 
1031 void ASTDeclReader::MergeDefinitionData(ObjCInterfaceDecl *D,
1032  struct ObjCInterfaceDecl::DefinitionData &&NewDD) {
1033  // FIXME: odr checking?
1034 }
1035 
1037  RedeclarableResult Redecl = VisitRedeclarable(ID);
1038  VisitObjCContainerDecl(ID);
1039  TypeIDForTypeDecl = Record.getGlobalTypeID(Record.readInt());
1040  mergeRedeclarable(ID, Redecl);
1041 
1042  ID->TypeParamList = ReadObjCTypeParamList();
1043  if (Record.readInt()) {
1044  // Read the definition.
1045  ID->allocateDefinitionData();
1046 
1047  ReadObjCDefinitionData(ID->data());
1048  ObjCInterfaceDecl *Canon = ID->getCanonicalDecl();
1049  if (Canon->Data.getPointer()) {
1050  // If we already have a definition, keep the definition invariant and
1051  // merge the data.
1052  MergeDefinitionData(Canon, std::move(ID->data()));
1053  ID->Data = Canon->Data;
1054  } else {
1055  // Set the definition data of the canonical declaration, so other
1056  // redeclarations will see it.
1057  ID->getCanonicalDecl()->Data = ID->Data;
1058 
1059  // We will rebuild this list lazily.
1060  ID->setIvarList(nullptr);
1061  }
1062 
1063  // Note that we have deserialized a definition.
1064  Reader.PendingDefinitions.insert(ID);
1065 
1066  // Note that we've loaded this Objective-C class.
1067  Reader.ObjCClassesLoaded.push_back(ID);
1068  } else {
1069  ID->Data = ID->getCanonicalDecl()->Data;
1070  }
1071 }
1072 
1074  VisitFieldDecl(IVD);
1075  IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record.readInt());
1076  // This field will be built lazily.
1077  IVD->setNextIvar(nullptr);
1078  bool synth = Record.readInt();
1079  IVD->setSynthesize(synth);
1080 }
1081 
1082 void ASTDeclReader::ReadObjCDefinitionData(
1083  struct ObjCProtocolDecl::DefinitionData &Data) {
1084 
1085  unsigned NumProtoRefs = Record.readInt();
1087  ProtoRefs.reserve(NumProtoRefs);
1088  for (unsigned I = 0; I != NumProtoRefs; ++I)
1089  ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>());
1091  ProtoLocs.reserve(NumProtoRefs);
1092  for (unsigned I = 0; I != NumProtoRefs; ++I)
1093  ProtoLocs.push_back(ReadSourceLocation());
1094  Data.ReferencedProtocols.set(ProtoRefs.data(), NumProtoRefs,
1095  ProtoLocs.data(), Reader.getContext());
1096 }
1097 
1098 void ASTDeclReader::MergeDefinitionData(ObjCProtocolDecl *D,
1099  struct ObjCProtocolDecl::DefinitionData &&NewDD) {
1100  // FIXME: odr checking?
1101 }
1102 
1104  RedeclarableResult Redecl = VisitRedeclarable(PD);
1105  VisitObjCContainerDecl(PD);
1106  mergeRedeclarable(PD, Redecl);
1107 
1108  if (Record.readInt()) {
1109  // Read the definition.
1110  PD->allocateDefinitionData();
1111 
1112  ReadObjCDefinitionData(PD->data());
1113 
1114  ObjCProtocolDecl *Canon = PD->getCanonicalDecl();
1115  if (Canon->Data.getPointer()) {
1116  // If we already have a definition, keep the definition invariant and
1117  // merge the data.
1118  MergeDefinitionData(Canon, std::move(PD->data()));
1119  PD->Data = Canon->Data;
1120  } else {
1121  // Set the definition data of the canonical declaration, so other
1122  // redeclarations will see it.
1123  PD->getCanonicalDecl()->Data = PD->Data;
1124  }
1125  // Note that we have deserialized a definition.
1126  Reader.PendingDefinitions.insert(PD);
1127  } else {
1128  PD->Data = PD->getCanonicalDecl()->Data;
1129  }
1130 }
1131 
1133  VisitFieldDecl(FD);
1134 }
1135 
1137  VisitObjCContainerDecl(CD);
1138  CD->setCategoryNameLoc(ReadSourceLocation());
1139  CD->setIvarLBraceLoc(ReadSourceLocation());
1140  CD->setIvarRBraceLoc(ReadSourceLocation());
1141 
1142  // Note that this category has been deserialized. We do this before
1143  // deserializing the interface declaration, so that it will consider this
1144  /// category.
1145  Reader.CategoriesDeserialized.insert(CD);
1146 
1147  CD->ClassInterface = ReadDeclAs<ObjCInterfaceDecl>();
1148  CD->TypeParamList = ReadObjCTypeParamList();
1149  unsigned NumProtoRefs = Record.readInt();
1151  ProtoRefs.reserve(NumProtoRefs);
1152  for (unsigned I = 0; I != NumProtoRefs; ++I)
1153  ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>());
1155  ProtoLocs.reserve(NumProtoRefs);
1156  for (unsigned I = 0; I != NumProtoRefs; ++I)
1157  ProtoLocs.push_back(ReadSourceLocation());
1158  CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
1159  Reader.getContext());
1160 }
1161 
1163  VisitNamedDecl(CAD);
1164  CAD->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>());
1165 }
1166 
1168  VisitNamedDecl(D);
1169  D->setAtLoc(ReadSourceLocation());
1170  D->setLParenLoc(ReadSourceLocation());
1171  QualType T = Record.readType();
1172  TypeSourceInfo *TSI = GetTypeSourceInfo();
1173  D->setType(T, TSI);
1175  (ObjCPropertyDecl::PropertyAttributeKind)Record.readInt());
1177  (ObjCPropertyDecl::PropertyAttributeKind)Record.readInt());
1179  (ObjCPropertyDecl::PropertyControl)Record.readInt());
1180  DeclarationName GetterName = Record.readDeclarationName();
1181  SourceLocation GetterLoc = ReadSourceLocation();
1182  D->setGetterName(GetterName.getObjCSelector(), GetterLoc);
1183  DeclarationName SetterName = Record.readDeclarationName();
1184  SourceLocation SetterLoc = ReadSourceLocation();
1185  D->setSetterName(SetterName.getObjCSelector(), SetterLoc);
1186  D->setGetterMethodDecl(ReadDeclAs<ObjCMethodDecl>());
1187  D->setSetterMethodDecl(ReadDeclAs<ObjCMethodDecl>());
1188  D->setPropertyIvarDecl(ReadDeclAs<ObjCIvarDecl>());
1189 }
1190 
1192  VisitObjCContainerDecl(D);
1193  D->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>());
1194 }
1195 
1197  VisitObjCImplDecl(D);
1198  D->CategoryNameLoc = ReadSourceLocation();
1199 }
1200 
1202  VisitObjCImplDecl(D);
1203  D->setSuperClass(ReadDeclAs<ObjCInterfaceDecl>());
1204  D->SuperLoc = ReadSourceLocation();
1205  D->setIvarLBraceLoc(ReadSourceLocation());
1206  D->setIvarRBraceLoc(ReadSourceLocation());
1207  D->setHasNonZeroConstructors(Record.readInt());
1208  D->setHasDestructors(Record.readInt());
1209  D->NumIvarInitializers = Record.readInt();
1210  if (D->NumIvarInitializers)
1211  D->IvarInitializers = ReadGlobalOffset();
1212 }
1213 
1215  VisitDecl(D);
1216  D->setAtLoc(ReadSourceLocation());
1217  D->setPropertyDecl(ReadDeclAs<ObjCPropertyDecl>());
1218  D->PropertyIvarDecl = ReadDeclAs<ObjCIvarDecl>();
1219  D->IvarLoc = ReadSourceLocation();
1220  D->setGetterCXXConstructor(Record.readExpr());
1221  D->setSetterCXXAssignment(Record.readExpr());
1222 }
1223 
1225  VisitDeclaratorDecl(FD);
1226  FD->Mutable = Record.readInt();
1227 
1228  if (auto ISK = static_cast<FieldDecl::InitStorageKind>(Record.readInt())) {
1229  FD->InitStorage.setInt(ISK);
1230  FD->InitStorage.setPointer(ISK == FieldDecl::ISK_CapturedVLAType
1231  ? Record.readType().getAsOpaquePtr()
1232  : Record.readExpr());
1233  }
1234 
1235  if (auto *BW = Record.readExpr())
1236  FD->setBitWidth(BW);
1237 
1238  if (!FD->getDeclName()) {
1239  if (FieldDecl *Tmpl = ReadDeclAs<FieldDecl>())
1240  Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
1241  }
1242  mergeMergeable(FD);
1243 }
1244 
1246  VisitDeclaratorDecl(PD);
1247  PD->GetterId = Record.getIdentifierInfo();
1248  PD->SetterId = Record.getIdentifierInfo();
1249 }
1250 
1252  VisitValueDecl(FD);
1253 
1254  FD->ChainingSize = Record.readInt();
1255  assert(FD->ChainingSize >= 2 && "Anonymous chaining must be >= 2");
1256  FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize];
1257 
1258  for (unsigned I = 0; I != FD->ChainingSize; ++I)
1259  FD->Chaining[I] = ReadDeclAs<NamedDecl>();
1260 
1261  mergeMergeable(FD);
1262 }
1263 
1264 ASTDeclReader::RedeclarableResult ASTDeclReader::VisitVarDeclImpl(VarDecl *VD) {
1265  RedeclarableResult Redecl = VisitRedeclarable(VD);
1266  VisitDeclaratorDecl(VD);
1267 
1268  VD->VarDeclBits.SClass = (StorageClass)Record.readInt();
1269  VD->VarDeclBits.TSCSpec = Record.readInt();
1270  VD->VarDeclBits.InitStyle = Record.readInt();
1271  if (!isa<ParmVarDecl>(VD)) {
1272  VD->NonParmVarDeclBits.IsThisDeclarationADemotedDefinition =
1273  Record.readInt();
1274  VD->NonParmVarDeclBits.ExceptionVar = Record.readInt();
1275  VD->NonParmVarDeclBits.NRVOVariable = Record.readInt();
1276  VD->NonParmVarDeclBits.CXXForRangeDecl = Record.readInt();
1277  VD->NonParmVarDeclBits.ARCPseudoStrong = Record.readInt();
1278  VD->NonParmVarDeclBits.IsInline = Record.readInt();
1279  VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
1280  VD->NonParmVarDeclBits.IsConstexpr = Record.readInt();
1281  VD->NonParmVarDeclBits.IsInitCapture = Record.readInt();
1282  VD->NonParmVarDeclBits.PreviousDeclInSameBlockScope = Record.readInt();
1283  VD->NonParmVarDeclBits.ImplicitParamKind = Record.readInt();
1284  }
1285  Linkage VarLinkage = Linkage(Record.readInt());
1286  VD->setCachedLinkage(VarLinkage);
1287 
1288  // Reconstruct the one piece of the IdentifierNamespace that we need.
1289  if (VD->getStorageClass() == SC_Extern && VarLinkage != NoLinkage &&
1291  VD->setLocalExternDecl();
1292 
1293  if (uint64_t Val = Record.readInt()) {
1294  VD->setInit(Record.readExpr());
1295  if (Val > 1) { // IsInitKnownICE = 1, IsInitNotICE = 2, IsInitICE = 3
1296  EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
1297  Eval->CheckedICE = true;
1298  Eval->IsICE = Val == 3;
1299  }
1300  }
1301 
1302  if (VD->getStorageDuration() == SD_Static && Record.readInt())
1303  Reader.DefinitionSource[VD] = Loc.F->Kind == ModuleKind::MK_MainFile;
1304 
1305  enum VarKind {
1306  VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
1307  };
1308  switch ((VarKind)Record.readInt()) {
1309  case VarNotTemplate:
1310  // Only true variables (not parameters or implicit parameters) can be
1311  // merged; the other kinds are not really redeclarable at all.
1312  if (!isa<ParmVarDecl>(VD) && !isa<ImplicitParamDecl>(VD) &&
1313  !isa<VarTemplateSpecializationDecl>(VD))
1314  mergeRedeclarable(VD, Redecl);
1315  break;
1316  case VarTemplate:
1317  // Merged when we merge the template.
1318  VD->setDescribedVarTemplate(ReadDeclAs<VarTemplateDecl>());
1319  break;
1320  case StaticDataMemberSpecialization: { // HasMemberSpecializationInfo.
1321  VarDecl *Tmpl = ReadDeclAs<VarDecl>();
1323  (TemplateSpecializationKind)Record.readInt();
1324  SourceLocation POI = ReadSourceLocation();
1325  Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
1326  mergeRedeclarable(VD, Redecl);
1327  break;
1328  }
1329  }
1330 
1331  return Redecl;
1332 }
1333 
1335  VisitVarDecl(PD);
1336 }
1337 
1339  VisitVarDecl(PD);
1340  unsigned isObjCMethodParam = Record.readInt();
1341  unsigned scopeDepth = Record.readInt();
1342  unsigned scopeIndex = Record.readInt();
1343  unsigned declQualifier = Record.readInt();
1344  if (isObjCMethodParam) {
1345  assert(scopeDepth == 0);
1346  PD->setObjCMethodScopeInfo(scopeIndex);
1347  PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier;
1348  } else {
1349  PD->setScopeInfo(scopeDepth, scopeIndex);
1350  }
1351  PD->ParmVarDeclBits.IsKNRPromoted = Record.readInt();
1352  PD->ParmVarDeclBits.HasInheritedDefaultArg = Record.readInt();
1353  if (Record.readInt()) // hasUninstantiatedDefaultArg.
1354  PD->setUninstantiatedDefaultArg(Record.readExpr());
1355 
1356  // FIXME: If this is a redeclaration of a function from another module, handle
1357  // inheritance of default arguments.
1358 }
1359 
1361  VisitVarDecl(DD);
1362  BindingDecl **BDs = DD->getTrailingObjects<BindingDecl*>();
1363  for (unsigned I = 0; I != DD->NumBindings; ++I)
1364  BDs[I] = ReadDeclAs<BindingDecl>();
1365 }
1366 
1368  VisitValueDecl(BD);
1369  BD->Binding = Record.readExpr();
1370 }
1371 
1373  VisitDecl(AD);
1374  AD->setAsmString(cast<StringLiteral>(Record.readExpr()));
1375  AD->setRParenLoc(ReadSourceLocation());
1376 }
1377 
1379  VisitDecl(BD);
1380  BD->setBody(cast_or_null<CompoundStmt>(Record.readStmt()));
1381  BD->setSignatureAsWritten(GetTypeSourceInfo());
1382  unsigned NumParams = Record.readInt();
1384  Params.reserve(NumParams);
1385  for (unsigned I = 0; I != NumParams; ++I)
1386  Params.push_back(ReadDeclAs<ParmVarDecl>());
1387  BD->setParams(Params);
1388 
1389  BD->setIsVariadic(Record.readInt());
1390  BD->setBlockMissingReturnType(Record.readInt());
1391  BD->setIsConversionFromLambda(Record.readInt());
1392 
1393  bool capturesCXXThis = Record.readInt();
1394  unsigned numCaptures = Record.readInt();
1396  captures.reserve(numCaptures);
1397  for (unsigned i = 0; i != numCaptures; ++i) {
1398  VarDecl *decl = ReadDeclAs<VarDecl>();
1399  unsigned flags = Record.readInt();
1400  bool byRef = (flags & 1);
1401  bool nested = (flags & 2);
1402  Expr *copyExpr = ((flags & 4) ? Record.readExpr() : nullptr);
1403 
1404  captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr));
1405  }
1406  BD->setCaptures(Reader.getContext(), captures, capturesCXXThis);
1407 }
1408 
1410  VisitDecl(CD);
1411  unsigned ContextParamPos = Record.readInt();
1412  CD->setNothrow(Record.readInt() != 0);
1413  // Body is set by VisitCapturedStmt.
1414  for (unsigned I = 0; I < CD->NumParams; ++I) {
1415  if (I != ContextParamPos)
1416  CD->setParam(I, ReadDeclAs<ImplicitParamDecl>());
1417  else
1418  CD->setContextParam(I, ReadDeclAs<ImplicitParamDecl>());
1419  }
1420 }
1421 
1423  VisitDecl(D);
1424  D->setLanguage((LinkageSpecDecl::LanguageIDs)Record.readInt());
1425  D->setExternLoc(ReadSourceLocation());
1426  D->setRBraceLoc(ReadSourceLocation());
1427 }
1428 
1430  VisitDecl(D);
1431  D->RBraceLoc = ReadSourceLocation();
1432 }
1433 
1435  VisitNamedDecl(D);
1436  D->setLocStart(ReadSourceLocation());
1437 }
1438 
1440  RedeclarableResult Redecl = VisitRedeclarable(D);
1441  VisitNamedDecl(D);
1442  D->setInline(Record.readInt());
1443  D->LocStart = ReadSourceLocation();
1444  D->RBraceLoc = ReadSourceLocation();
1445 
1446  // Defer loading the anonymous namespace until we've finished merging
1447  // this namespace; loading it might load a later declaration of the
1448  // same namespace, and we have an invariant that older declarations
1449  // get merged before newer ones try to merge.
1450  GlobalDeclID AnonNamespace = 0;
1451  if (Redecl.getFirstID() == ThisDeclID) {
1452  AnonNamespace = ReadDeclID();
1453  } else {
1454  // Link this namespace back to the first declaration, which has already
1455  // been deserialized.
1456  D->AnonOrFirstNamespaceAndInline.setPointer(D->getFirstDecl());
1457  }
1458 
1459  mergeRedeclarable(D, Redecl);
1460 
1461  if (AnonNamespace) {
1462  // Each module has its own anonymous namespace, which is disjoint from
1463  // any other module's anonymous namespaces, so don't attach the anonymous
1464  // namespace at all.
1465  NamespaceDecl *Anon = cast<NamespaceDecl>(Reader.GetDecl(AnonNamespace));
1466  if (!Record.isModule())
1467  D->setAnonymousNamespace(Anon);
1468  }
1469 }
1470 
1472  RedeclarableResult Redecl = VisitRedeclarable(D);
1473  VisitNamedDecl(D);
1474  D->NamespaceLoc = ReadSourceLocation();
1475  D->IdentLoc = ReadSourceLocation();
1476  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1477  D->Namespace = ReadDeclAs<NamedDecl>();
1478  mergeRedeclarable(D, Redecl);
1479 }
1480 
1482  VisitNamedDecl(D);
1483  D->setUsingLoc(ReadSourceLocation());
1484  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1485  ReadDeclarationNameLoc(D->DNLoc, D->getDeclName());
1486  D->FirstUsingShadow.setPointer(ReadDeclAs<UsingShadowDecl>());
1487  D->setTypename(Record.readInt());
1488  if (NamedDecl *Pattern = ReadDeclAs<NamedDecl>())
1489  Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
1490  mergeMergeable(D);
1491 }
1492 
1494  VisitNamedDecl(D);
1495  D->InstantiatedFrom = ReadDeclAs<NamedDecl>();
1496  NamedDecl **Expansions = D->getTrailingObjects<NamedDecl*>();
1497  for (unsigned I = 0; I != D->NumExpansions; ++I)
1498  Expansions[I] = ReadDeclAs<NamedDecl>();
1499  mergeMergeable(D);
1500 }
1501 
1503  RedeclarableResult Redecl = VisitRedeclarable(D);
1504  VisitNamedDecl(D);
1505  D->Underlying = ReadDeclAs<NamedDecl>();
1506  D->IdentifierNamespace = Record.readInt();
1507  D->UsingOrNextShadow = ReadDeclAs<NamedDecl>();
1508  UsingShadowDecl *Pattern = ReadDeclAs<UsingShadowDecl>();
1509  if (Pattern)
1510  Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
1511  mergeRedeclarable(D, Redecl);
1512 }
1513 
1516  VisitUsingShadowDecl(D);
1517  D->NominatedBaseClassShadowDecl = ReadDeclAs<ConstructorUsingShadowDecl>();
1518  D->ConstructedBaseClassShadowDecl = ReadDeclAs<ConstructorUsingShadowDecl>();
1519  D->IsVirtual = Record.readInt();
1520 }
1521 
1523  VisitNamedDecl(D);
1524  D->UsingLoc = ReadSourceLocation();
1525  D->NamespaceLoc = ReadSourceLocation();
1526  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1527  D->NominatedNamespace = ReadDeclAs<NamedDecl>();
1528  D->CommonAncestor = ReadDeclAs<DeclContext>();
1529 }
1530 
1532  VisitValueDecl(D);
1533  D->setUsingLoc(ReadSourceLocation());
1534  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1535  ReadDeclarationNameLoc(D->DNLoc, D->getDeclName());
1536  D->EllipsisLoc = ReadSourceLocation();
1537  mergeMergeable(D);
1538 }
1539 
1542  VisitTypeDecl(D);
1543  D->TypenameLocation = ReadSourceLocation();
1544  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1545  D->EllipsisLoc = ReadSourceLocation();
1546  mergeMergeable(D);
1547 }
1548 
1549 void ASTDeclReader::ReadCXXDefinitionData(
1550  struct CXXRecordDecl::DefinitionData &Data, const CXXRecordDecl *D) {
1551  // Note: the caller has deserialized the IsLambda bit already.
1552  Data.UserDeclaredConstructor = Record.readInt();
1553  Data.UserDeclaredSpecialMembers = Record.readInt();
1554  Data.Aggregate = Record.readInt();
1555  Data.PlainOldData = Record.readInt();
1556  Data.Empty = Record.readInt();
1557  Data.Polymorphic = Record.readInt();
1558  Data.Abstract = Record.readInt();
1559  Data.IsStandardLayout = Record.readInt();
1560  Data.HasNoNonEmptyBases = Record.readInt();
1561  Data.HasPrivateFields = Record.readInt();
1562  Data.HasProtectedFields = Record.readInt();
1563  Data.HasPublicFields = Record.readInt();
1564  Data.HasMutableFields = Record.readInt();
1565  Data.HasVariantMembers = Record.readInt();
1566  Data.HasOnlyCMembers = Record.readInt();
1567  Data.HasInClassInitializer = Record.readInt();
1568  Data.HasUninitializedReferenceMember = Record.readInt();
1569  Data.HasUninitializedFields = Record.readInt();
1570  Data.HasInheritedConstructor = Record.readInt();
1571  Data.HasInheritedAssignment = Record.readInt();
1572  Data.NeedOverloadResolutionForCopyConstructor = Record.readInt();
1573  Data.NeedOverloadResolutionForMoveConstructor = Record.readInt();
1574  Data.NeedOverloadResolutionForMoveAssignment = Record.readInt();
1575  Data.NeedOverloadResolutionForDestructor = Record.readInt();
1576  Data.DefaultedCopyConstructorIsDeleted = Record.readInt();
1577  Data.DefaultedMoveConstructorIsDeleted = Record.readInt();
1578  Data.DefaultedMoveAssignmentIsDeleted = Record.readInt();
1579  Data.DefaultedDestructorIsDeleted = Record.readInt();
1580  Data.HasTrivialSpecialMembers = Record.readInt();
1581  Data.HasTrivialSpecialMembersForCall = Record.readInt();
1582  Data.DeclaredNonTrivialSpecialMembers = Record.readInt();
1583  Data.DeclaredNonTrivialSpecialMembersForCall = Record.readInt();
1584  Data.HasIrrelevantDestructor = Record.readInt();
1585  Data.HasConstexprNonCopyMoveConstructor = Record.readInt();
1586  Data.HasDefaultedDefaultConstructor = Record.readInt();
1587  Data.CanPassInRegisters = Record.readInt();
1588  Data.DefaultedDefaultConstructorIsConstexpr = Record.readInt();
1589  Data.HasConstexprDefaultConstructor = Record.readInt();
1590  Data.HasNonLiteralTypeFieldsOrBases = Record.readInt();
1591  Data.ComputedVisibleConversions = Record.readInt();
1592  Data.UserProvidedDefaultConstructor = Record.readInt();
1593  Data.DeclaredSpecialMembers = Record.readInt();
1594  Data.ImplicitCopyConstructorCanHaveConstParamForVBase = Record.readInt();
1595  Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase = Record.readInt();
1596  Data.ImplicitCopyAssignmentHasConstParam = Record.readInt();
1597  Data.HasDeclaredCopyConstructorWithConstParam = Record.readInt();
1598  Data.HasDeclaredCopyAssignmentWithConstParam = Record.readInt();
1599  Data.ODRHash = Record.readInt();
1600  Data.HasODRHash = true;
1601 
1602  if (Record.readInt())
1603  Reader.DefinitionSource[D] = Loc.F->Kind == ModuleKind::MK_MainFile;
1604 
1605  Data.NumBases = Record.readInt();
1606  if (Data.NumBases)
1607  Data.Bases = ReadGlobalOffset();
1608  Data.NumVBases = Record.readInt();
1609  if (Data.NumVBases)
1610  Data.VBases = ReadGlobalOffset();
1611 
1612  Record.readUnresolvedSet(Data.Conversions);
1613  Record.readUnresolvedSet(Data.VisibleConversions);
1614  assert(Data.Definition && "Data.Definition should be already set!");
1615  Data.FirstFriend = ReadDeclID();
1616 
1617  if (Data.IsLambda) {
1618  typedef LambdaCapture Capture;
1619  CXXRecordDecl::LambdaDefinitionData &Lambda
1620  = static_cast<CXXRecordDecl::LambdaDefinitionData &>(Data);
1621  Lambda.Dependent = Record.readInt();
1622  Lambda.IsGenericLambda = Record.readInt();
1623  Lambda.CaptureDefault = Record.readInt();
1624  Lambda.NumCaptures = Record.readInt();
1625  Lambda.NumExplicitCaptures = Record.readInt();
1626  Lambda.ManglingNumber = Record.readInt();
1627  Lambda.ContextDecl = ReadDeclID();
1628  Lambda.Captures = (Capture *)Reader.getContext().Allocate(
1629  sizeof(Capture) * Lambda.NumCaptures);
1630  Capture *ToCapture = Lambda.Captures;
1631  Lambda.MethodTyInfo = GetTypeSourceInfo();
1632  for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
1633  SourceLocation Loc = ReadSourceLocation();
1634  bool IsImplicit = Record.readInt();
1635  LambdaCaptureKind Kind = static_cast<LambdaCaptureKind>(Record.readInt());
1636  switch (Kind) {
1637  case LCK_StarThis:
1638  case LCK_This:
1639  case LCK_VLAType:
1640  *ToCapture++ = Capture(Loc, IsImplicit, Kind, nullptr,SourceLocation());
1641  break;
1642  case LCK_ByCopy:
1643  case LCK_ByRef:
1644  VarDecl *Var = ReadDeclAs<VarDecl>();
1645  SourceLocation EllipsisLoc = ReadSourceLocation();
1646  *ToCapture++ = Capture(Loc, IsImplicit, Kind, Var, EllipsisLoc);
1647  break;
1648  }
1649  }
1650  }
1651 }
1652 
1653 void ASTDeclReader::MergeDefinitionData(
1654  CXXRecordDecl *D, struct CXXRecordDecl::DefinitionData &&MergeDD) {
1655  assert(D->DefinitionData &&
1656  "merging class definition into non-definition");
1657  auto &DD = *D->DefinitionData;
1658 
1659  if (DD.Definition != MergeDD.Definition) {
1660  // Track that we merged the definitions.
1661  Reader.MergedDeclContexts.insert(std::make_pair(MergeDD.Definition,
1662  DD.Definition));
1663  Reader.PendingDefinitions.erase(MergeDD.Definition);
1664  MergeDD.Definition->IsCompleteDefinition = false;
1665  Reader.mergeDefinitionVisibility(DD.Definition, MergeDD.Definition);
1666  assert(Reader.Lookups.find(MergeDD.Definition) == Reader.Lookups.end() &&
1667  "already loaded pending lookups for merged definition");
1668  }
1669 
1670  auto PFDI = Reader.PendingFakeDefinitionData.find(&DD);
1671  if (PFDI != Reader.PendingFakeDefinitionData.end() &&
1672  PFDI->second == ASTReader::PendingFakeDefinitionKind::Fake) {
1673  // We faked up this definition data because we found a class for which we'd
1674  // not yet loaded the definition. Replace it with the real thing now.
1675  assert(!DD.IsLambda && !MergeDD.IsLambda && "faked up lambda definition?");
1676  PFDI->second = ASTReader::PendingFakeDefinitionKind::FakeLoaded;
1677 
1678  // Don't change which declaration is the definition; that is required
1679  // to be invariant once we select it.
1680  auto *Def = DD.Definition;
1681  DD = std::move(MergeDD);
1682  DD.Definition = Def;
1683  return;
1684  }
1685 
1686  // FIXME: Move this out into a .def file?
1687  bool DetectedOdrViolation = false;
1688 #define OR_FIELD(Field) DD.Field |= MergeDD.Field;
1689 #define MATCH_FIELD(Field) \
1690  DetectedOdrViolation |= DD.Field != MergeDD.Field; \
1691  OR_FIELD(Field)
1692  MATCH_FIELD(UserDeclaredConstructor)
1693  MATCH_FIELD(UserDeclaredSpecialMembers)
1694  MATCH_FIELD(Aggregate)
1695  MATCH_FIELD(PlainOldData)
1696  MATCH_FIELD(Empty)
1697  MATCH_FIELD(Polymorphic)
1698  MATCH_FIELD(Abstract)
1699  MATCH_FIELD(IsStandardLayout)
1700  MATCH_FIELD(HasNoNonEmptyBases)
1701  MATCH_FIELD(HasPrivateFields)
1702  MATCH_FIELD(HasProtectedFields)
1703  MATCH_FIELD(HasPublicFields)
1704  MATCH_FIELD(HasMutableFields)
1705  MATCH_FIELD(HasVariantMembers)
1706  MATCH_FIELD(HasOnlyCMembers)
1707  MATCH_FIELD(HasInClassInitializer)
1708  MATCH_FIELD(HasUninitializedReferenceMember)
1709  MATCH_FIELD(HasUninitializedFields)
1710  MATCH_FIELD(HasInheritedConstructor)
1711  MATCH_FIELD(HasInheritedAssignment)
1712  MATCH_FIELD(NeedOverloadResolutionForCopyConstructor)
1713  MATCH_FIELD(NeedOverloadResolutionForMoveConstructor)
1714  MATCH_FIELD(NeedOverloadResolutionForMoveAssignment)
1715  MATCH_FIELD(NeedOverloadResolutionForDestructor)
1716  MATCH_FIELD(DefaultedCopyConstructorIsDeleted)
1717  MATCH_FIELD(DefaultedMoveConstructorIsDeleted)
1718  MATCH_FIELD(DefaultedMoveAssignmentIsDeleted)
1719  MATCH_FIELD(DefaultedDestructorIsDeleted)
1720  OR_FIELD(HasTrivialSpecialMembers)
1721  OR_FIELD(HasTrivialSpecialMembersForCall)
1722  OR_FIELD(DeclaredNonTrivialSpecialMembers)
1723  OR_FIELD(DeclaredNonTrivialSpecialMembersForCall)
1724  MATCH_FIELD(HasIrrelevantDestructor)
1725  OR_FIELD(HasConstexprNonCopyMoveConstructor)
1726  OR_FIELD(HasDefaultedDefaultConstructor)
1727  MATCH_FIELD(CanPassInRegisters)
1728  MATCH_FIELD(DefaultedDefaultConstructorIsConstexpr)
1729  OR_FIELD(HasConstexprDefaultConstructor)
1730  MATCH_FIELD(HasNonLiteralTypeFieldsOrBases)
1731  // ComputedVisibleConversions is handled below.
1732  MATCH_FIELD(UserProvidedDefaultConstructor)
1733  OR_FIELD(DeclaredSpecialMembers)
1734  MATCH_FIELD(ImplicitCopyConstructorCanHaveConstParamForVBase)
1735  MATCH_FIELD(ImplicitCopyConstructorCanHaveConstParamForNonVBase)
1736  MATCH_FIELD(ImplicitCopyAssignmentHasConstParam)
1737  OR_FIELD(HasDeclaredCopyConstructorWithConstParam)
1738  OR_FIELD(HasDeclaredCopyAssignmentWithConstParam)
1739  MATCH_FIELD(IsLambda)
1740 #undef OR_FIELD
1741 #undef MATCH_FIELD
1742 
1743  if (DD.NumBases != MergeDD.NumBases || DD.NumVBases != MergeDD.NumVBases)
1744  DetectedOdrViolation = true;
1745  // FIXME: Issue a diagnostic if the base classes don't match when we come
1746  // to lazily load them.
1747 
1748  // FIXME: Issue a diagnostic if the list of conversion functions doesn't
1749  // match when we come to lazily load them.
1750  if (MergeDD.ComputedVisibleConversions && !DD.ComputedVisibleConversions) {
1751  DD.VisibleConversions = std::move(MergeDD.VisibleConversions);
1752  DD.ComputedVisibleConversions = true;
1753  }
1754 
1755  // FIXME: Issue a diagnostic if FirstFriend doesn't match when we come to
1756  // lazily load it.
1757 
1758  if (DD.IsLambda) {
1759  // FIXME: ODR-checking for merging lambdas (this happens, for instance,
1760  // when they occur within the body of a function template specialization).
1761  }
1762 
1763  if (D->getODRHash() != MergeDD.ODRHash) {
1764  DetectedOdrViolation = true;
1765  }
1766 
1767  if (DetectedOdrViolation)
1768  Reader.PendingOdrMergeFailures[DD.Definition].push_back(
1769  {MergeDD.Definition, &MergeDD});
1770 }
1771 
1772 void ASTDeclReader::ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update) {
1773  struct CXXRecordDecl::DefinitionData *DD;
1774  ASTContext &C = Reader.getContext();
1775 
1776  // Determine whether this is a lambda closure type, so that we can
1777  // allocate the appropriate DefinitionData structure.
1778  bool IsLambda = Record.readInt();
1779  if (IsLambda)
1780  DD = new (C) CXXRecordDecl::LambdaDefinitionData(D, nullptr, false, false,
1781  LCD_None);
1782  else
1783  DD = new (C) struct CXXRecordDecl::DefinitionData(D);
1784 
1785  ReadCXXDefinitionData(*DD, D);
1786 
1787  // We might already have a definition for this record. This can happen either
1788  // because we're reading an update record, or because we've already done some
1789  // merging. Either way, just merge into it.
1790  CXXRecordDecl *Canon = D->getCanonicalDecl();
1791  if (Canon->DefinitionData) {
1792  MergeDefinitionData(Canon, std::move(*DD));
1793  D->DefinitionData = Canon->DefinitionData;
1794  return;
1795  }
1796 
1797  // Mark this declaration as being a definition.
1798  D->IsCompleteDefinition = true;
1799  D->DefinitionData = DD;
1800 
1801  // If this is not the first declaration or is an update record, we can have
1802  // other redeclarations already. Make a note that we need to propagate the
1803  // DefinitionData pointer onto them.
1804  if (Update || Canon != D) {
1805  Canon->DefinitionData = D->DefinitionData;
1806  Reader.PendingDefinitions.insert(D);
1807  }
1808 }
1809 
1810 ASTDeclReader::RedeclarableResult
1812  RedeclarableResult Redecl = VisitRecordDeclImpl(D);
1813 
1814  ASTContext &C = Reader.getContext();
1815 
1816  enum CXXRecKind {
1817  CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1818  };
1819  switch ((CXXRecKind)Record.readInt()) {
1820  case CXXRecNotTemplate:
1821  // Merged when we merge the folding set entry in the primary template.
1822  if (!isa<ClassTemplateSpecializationDecl>(D))
1823  mergeRedeclarable(D, Redecl);
1824  break;
1825  case CXXRecTemplate: {
1826  // Merged when we merge the template.
1827  ClassTemplateDecl *Template = ReadDeclAs<ClassTemplateDecl>();
1828  D->TemplateOrInstantiation = Template;
1829  if (!Template->getTemplatedDecl()) {
1830  // We've not actually loaded the ClassTemplateDecl yet, because we're
1831  // currently being loaded as its pattern. Rely on it to set up our
1832  // TypeForDecl (see VisitClassTemplateDecl).
1833  //
1834  // Beware: we do not yet know our canonical declaration, and may still
1835  // get merged once the surrounding class template has got off the ground.
1836  TypeIDForTypeDecl = 0;
1837  }
1838  break;
1839  }
1840  case CXXRecMemberSpecialization: {
1841  CXXRecordDecl *RD = ReadDeclAs<CXXRecordDecl>();
1843  (TemplateSpecializationKind)Record.readInt();
1844  SourceLocation POI = ReadSourceLocation();
1845  MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
1846  MSI->setPointOfInstantiation(POI);
1847  D->TemplateOrInstantiation = MSI;
1848  mergeRedeclarable(D, Redecl);
1849  break;
1850  }
1851  }
1852 
1853  bool WasDefinition = Record.readInt();
1854  if (WasDefinition)
1855  ReadCXXRecordDefinition(D, /*Update*/false);
1856  else
1857  // Propagate DefinitionData pointer from the canonical declaration.
1858  D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
1859 
1860  // Lazily load the key function to avoid deserializing every method so we can
1861  // compute it.
1862  if (WasDefinition) {
1863  DeclID KeyFn = ReadDeclID();
1864  if (KeyFn && D->IsCompleteDefinition)
1865  // FIXME: This is wrong for the ARM ABI, where some other module may have
1866  // made this function no longer be a key function. We need an update
1867  // record or similar for that case.
1868  C.KeyFunctions[D] = KeyFn;
1869  }
1870 
1871  return Redecl;
1872 }
1873 
1875  VisitFunctionDecl(D);
1876  D->IsCopyDeductionCandidate = Record.readInt();
1877 }
1878 
1880  VisitFunctionDecl(D);
1881 
1882  unsigned NumOverridenMethods = Record.readInt();
1883  if (D->isCanonicalDecl()) {
1884  while (NumOverridenMethods--) {
1885  // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
1886  // MD may be initializing.
1887  if (CXXMethodDecl *MD = ReadDeclAs<CXXMethodDecl>())
1888  Reader.getContext().addOverriddenMethod(D, MD->getCanonicalDecl());
1889  }
1890  } else {
1891  // We don't care about which declarations this used to override; we get
1892  // the relevant information from the canonical declaration.
1893  Record.skipInts(NumOverridenMethods);
1894  }
1895 }
1896 
1898  // We need the inherited constructor information to merge the declaration,
1899  // so we have to read it before we call VisitCXXMethodDecl.
1900  if (D->isInheritingConstructor()) {
1901  auto *Shadow = ReadDeclAs<ConstructorUsingShadowDecl>();
1902  auto *Ctor = ReadDeclAs<CXXConstructorDecl>();
1903  *D->getTrailingObjects<InheritedConstructor>() =
1904  InheritedConstructor(Shadow, Ctor);
1905  }
1906 
1907  VisitCXXMethodDecl(D);
1908 }
1909 
1911  VisitCXXMethodDecl(D);
1912 
1913  if (auto *OperatorDelete = ReadDeclAs<FunctionDecl>()) {
1914  auto *Canon = cast<CXXDestructorDecl>(D->getCanonicalDecl());
1915  auto *ThisArg = Record.readExpr();
1916  // FIXME: Check consistency if we have an old and new operator delete.
1917  if (!Canon->OperatorDelete) {
1918  Canon->OperatorDelete = OperatorDelete;
1919  Canon->OperatorDeleteThisArg = ThisArg;
1920  }
1921  }
1922 }
1923 
1925  VisitCXXMethodDecl(D);
1926 }
1927 
1929  VisitDecl(D);
1930  D->ImportedAndComplete.setPointer(readModule());
1931  D->ImportedAndComplete.setInt(Record.readInt());
1932  SourceLocation *StoredLocs = D->getTrailingObjects<SourceLocation>();
1933  for (unsigned I = 0, N = Record.back(); I != N; ++I)
1934  StoredLocs[I] = ReadSourceLocation();
1935  Record.skipInts(1); // The number of stored source locations.
1936 }
1937 
1939  VisitDecl(D);
1940  D->setColonLoc(ReadSourceLocation());
1941 }
1942 
1944  VisitDecl(D);
1945  if (Record.readInt()) // hasFriendDecl
1946  D->Friend = ReadDeclAs<NamedDecl>();
1947  else
1948  D->Friend = GetTypeSourceInfo();
1949  for (unsigned i = 0; i != D->NumTPLists; ++i)
1950  D->getTrailingObjects<TemplateParameterList *>()[i] =
1951  Record.readTemplateParameterList();
1952  D->NextFriend = ReadDeclID();
1953  D->UnsupportedFriend = (Record.readInt() != 0);
1954  D->FriendLoc = ReadSourceLocation();
1955 }
1956 
1958  VisitDecl(D);
1959  unsigned NumParams = Record.readInt();
1960  D->NumParams = NumParams;
1961  D->Params = new TemplateParameterList*[NumParams];
1962  for (unsigned i = 0; i != NumParams; ++i)
1963  D->Params[i] = Record.readTemplateParameterList();
1964  if (Record.readInt()) // HasFriendDecl
1965  D->Friend = ReadDeclAs<NamedDecl>();
1966  else
1967  D->Friend = GetTypeSourceInfo();
1968  D->FriendLoc = ReadSourceLocation();
1969 }
1970 
1972  VisitNamedDecl(D);
1973 
1974  DeclID PatternID = ReadDeclID();
1975  NamedDecl *TemplatedDecl = cast_or_null<NamedDecl>(Reader.GetDecl(PatternID));
1976  TemplateParameterList *TemplateParams = Record.readTemplateParameterList();
1977  // FIXME handle associated constraints
1978  D->init(TemplatedDecl, TemplateParams);
1979 
1980  return PatternID;
1981 }
1982 
1983 ASTDeclReader::RedeclarableResult
1985  RedeclarableResult Redecl = VisitRedeclarable(D);
1986 
1987  // Make sure we've allocated the Common pointer first. We do this before
1988  // VisitTemplateDecl so that getCommonPtr() can be used during initialization.
1990  if (!CanonD->Common) {
1991  CanonD->Common = CanonD->newCommon(Reader.getContext());
1992  Reader.PendingDefinitions.insert(CanonD);
1993  }
1994  D->Common = CanonD->Common;
1995 
1996  // If this is the first declaration of the template, fill in the information
1997  // for the 'common' pointer.
1998  if (ThisDeclID == Redecl.getFirstID()) {
1999  if (RedeclarableTemplateDecl *RTD
2000  = ReadDeclAs<RedeclarableTemplateDecl>()) {
2001  assert(RTD->getKind() == D->getKind() &&
2002  "InstantiatedFromMemberTemplate kind mismatch");
2004  if (Record.readInt())
2006  }
2007  }
2008 
2009  DeclID PatternID = VisitTemplateDecl(D);
2010  D->IdentifierNamespace = Record.readInt();
2011 
2012  mergeRedeclarable(D, Redecl, PatternID);
2013 
2014  // If we merged the template with a prior declaration chain, merge the common
2015  // pointer.
2016  // FIXME: Actually merge here, don't just overwrite.
2017  D->Common = D->getCanonicalDecl()->Common;
2018 
2019  return Redecl;
2020 }
2021 
2023  RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2024 
2025  if (ThisDeclID == Redecl.getFirstID()) {
2026  // This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of
2027  // the specializations.
2029  ReadDeclIDList(SpecIDs);
2031  }
2032 
2033  if (D->getTemplatedDecl()->TemplateOrInstantiation) {
2034  // We were loaded before our templated declaration was. We've not set up
2035  // its corresponding type yet (see VisitCXXRecordDeclImpl), so reconstruct
2036  // it now.
2037  Reader.getContext().getInjectedClassNameType(
2039  }
2040 }
2041 
2043  llvm_unreachable("BuiltinTemplates are not serialized");
2044 }
2045 
2046 /// TODO: Unify with ClassTemplateDecl version?
2047 /// May require unifying ClassTemplateDecl and
2048 /// VarTemplateDecl beyond TemplateDecl...
2050  RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2051 
2052  if (ThisDeclID == Redecl.getFirstID()) {
2053  // This VarTemplateDecl owns a CommonPtr; read it to keep track of all of
2054  // the specializations.
2056  ReadDeclIDList(SpecIDs);
2058  }
2059 }
2060 
2061 ASTDeclReader::RedeclarableResult
2064  RedeclarableResult Redecl = VisitCXXRecordDeclImpl(D);
2065 
2066  ASTContext &C = Reader.getContext();
2067  if (Decl *InstD = ReadDecl()) {
2068  if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
2069  D->SpecializedTemplate = CTD;
2070  } else {
2072  Record.readTemplateArgumentList(TemplArgs);
2073  TemplateArgumentList *ArgList
2074  = TemplateArgumentList::CreateCopy(C, TemplArgs);
2075  ClassTemplateSpecializationDecl::SpecializedPartialSpecialization *PS
2077  SpecializedPartialSpecialization();
2078  PS->PartialSpecialization
2079  = cast<ClassTemplatePartialSpecializationDecl>(InstD);
2080  PS->TemplateArgs = ArgList;
2081  D->SpecializedTemplate = PS;
2082  }
2083  }
2084 
2086  Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2087  D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2088  D->PointOfInstantiation = ReadSourceLocation();
2089  D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2090 
2091  bool writtenAsCanonicalDecl = Record.readInt();
2092  if (writtenAsCanonicalDecl) {
2093  ClassTemplateDecl *CanonPattern = ReadDeclAs<ClassTemplateDecl>();
2094  if (D->isCanonicalDecl()) { // It's kept in the folding set.
2095  // Set this as, or find, the canonical declaration for this specialization
2098  dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
2099  CanonSpec = CanonPattern->getCommonPtr()->PartialSpecializations
2100  .GetOrInsertNode(Partial);
2101  } else {
2102  CanonSpec =
2103  CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2104  }
2105  // If there was already a canonical specialization, merge into it.
2106  if (CanonSpec != D) {
2107  mergeRedeclarable<TagDecl>(D, CanonSpec, Redecl);
2108 
2109  // This declaration might be a definition. Merge with any existing
2110  // definition.
2111  if (auto *DDD = D->DefinitionData) {
2112  if (CanonSpec->DefinitionData)
2113  MergeDefinitionData(CanonSpec, std::move(*DDD));
2114  else
2115  CanonSpec->DefinitionData = D->DefinitionData;
2116  }
2117  D->DefinitionData = CanonSpec->DefinitionData;
2118  }
2119  }
2120  }
2121 
2122  // Explicit info.
2123  if (TypeSourceInfo *TyInfo = GetTypeSourceInfo()) {
2124  ClassTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo
2125  = new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
2126  ExplicitInfo->TypeAsWritten = TyInfo;
2127  ExplicitInfo->ExternLoc = ReadSourceLocation();
2128  ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation();
2129  D->ExplicitInfo = ExplicitInfo;
2130  }
2131 
2132  return Redecl;
2133 }
2134 
2137  RedeclarableResult Redecl = VisitClassTemplateSpecializationDeclImpl(D);
2138 
2139  D->TemplateParams = Record.readTemplateParameterList();
2140  D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2141 
2142  // These are read/set from/to the first declaration.
2143  if (ThisDeclID == Redecl.getFirstID()) {
2144  D->InstantiatedFromMember.setPointer(
2145  ReadDeclAs<ClassTemplatePartialSpecializationDecl>());
2146  D->InstantiatedFromMember.setInt(Record.readInt());
2147  }
2148 }
2149 
2152  VisitDecl(D);
2153  D->Specialization = ReadDeclAs<CXXMethodDecl>();
2154 }
2155 
2157  RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2158 
2159  if (ThisDeclID == Redecl.getFirstID()) {
2160  // This FunctionTemplateDecl owns a CommonPtr; read it.
2162  ReadDeclIDList(SpecIDs);
2164  }
2165 }
2166 
2167 /// TODO: Unify with ClassTemplateSpecializationDecl version?
2168 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
2169 /// VarTemplate(Partial)SpecializationDecl with a new data
2170 /// structure Template(Partial)SpecializationDecl, and
2171 /// using Template(Partial)SpecializationDecl as input type.
2172 ASTDeclReader::RedeclarableResult
2175  RedeclarableResult Redecl = VisitVarDeclImpl(D);
2176 
2177  ASTContext &C = Reader.getContext();
2178  if (Decl *InstD = ReadDecl()) {
2179  if (VarTemplateDecl *VTD = dyn_cast<VarTemplateDecl>(InstD)) {
2180  D->SpecializedTemplate = VTD;
2181  } else {
2183  Record.readTemplateArgumentList(TemplArgs);
2185  C, TemplArgs);
2186  VarTemplateSpecializationDecl::SpecializedPartialSpecialization *PS =
2187  new (C)
2188  VarTemplateSpecializationDecl::SpecializedPartialSpecialization();
2189  PS->PartialSpecialization =
2190  cast<VarTemplatePartialSpecializationDecl>(InstD);
2191  PS->TemplateArgs = ArgList;
2192  D->SpecializedTemplate = PS;
2193  }
2194  }
2195 
2196  // Explicit info.
2197  if (TypeSourceInfo *TyInfo = GetTypeSourceInfo()) {
2198  VarTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo =
2199  new (C) VarTemplateSpecializationDecl::ExplicitSpecializationInfo;
2200  ExplicitInfo->TypeAsWritten = TyInfo;
2201  ExplicitInfo->ExternLoc = ReadSourceLocation();
2202  ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation();
2203  D->ExplicitInfo = ExplicitInfo;
2204  }
2205 
2207  Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2208  D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2209  D->PointOfInstantiation = ReadSourceLocation();
2210  D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2211  D->IsCompleteDefinition = Record.readInt();
2212 
2213  bool writtenAsCanonicalDecl = Record.readInt();
2214  if (writtenAsCanonicalDecl) {
2215  VarTemplateDecl *CanonPattern = ReadDeclAs<VarTemplateDecl>();
2216  if (D->isCanonicalDecl()) { // It's kept in the folding set.
2217  // FIXME: If it's already present, merge it.
2219  dyn_cast<VarTemplatePartialSpecializationDecl>(D)) {
2220  CanonPattern->getCommonPtr()->PartialSpecializations
2221  .GetOrInsertNode(Partial);
2222  } else {
2223  CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2224  }
2225  }
2226  }
2227 
2228  return Redecl;
2229 }
2230 
2231 /// TODO: Unify with ClassTemplatePartialSpecializationDecl version?
2232 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
2233 /// VarTemplate(Partial)SpecializationDecl with a new data
2234 /// structure Template(Partial)SpecializationDecl, and
2235 /// using Template(Partial)SpecializationDecl as input type.
2238  RedeclarableResult Redecl = VisitVarTemplateSpecializationDeclImpl(D);
2239 
2240  D->TemplateParams = Record.readTemplateParameterList();
2241  D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2242 
2243  // These are read/set from/to the first declaration.
2244  if (ThisDeclID == Redecl.getFirstID()) {
2245  D->InstantiatedFromMember.setPointer(
2246  ReadDeclAs<VarTemplatePartialSpecializationDecl>());
2247  D->InstantiatedFromMember.setInt(Record.readInt());
2248  }
2249 }
2250 
2252  VisitTypeDecl(D);
2253 
2254  D->setDeclaredWithTypename(Record.readInt());
2255 
2256  if (Record.readInt())
2257  D->setDefaultArgument(GetTypeSourceInfo());
2258 }
2259 
2261  VisitDeclaratorDecl(D);
2262  // TemplateParmPosition.
2263  D->setDepth(Record.readInt());
2264  D->setPosition(Record.readInt());
2265  if (D->isExpandedParameterPack()) {
2266  auto TypesAndInfos =
2267  D->getTrailingObjects<std::pair<QualType, TypeSourceInfo *>>();
2268  for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
2269  new (&TypesAndInfos[I].first) QualType(Record.readType());
2270  TypesAndInfos[I].second = GetTypeSourceInfo();
2271  }
2272  } else {
2273  // Rest of NonTypeTemplateParmDecl.
2274  D->ParameterPack = Record.readInt();
2275  if (Record.readInt())
2276  D->setDefaultArgument(Record.readExpr());
2277  }
2278 }
2279 
2281  VisitTemplateDecl(D);
2282  // TemplateParmPosition.
2283  D->setDepth(Record.readInt());
2284  D->setPosition(Record.readInt());
2285  if (D->isExpandedParameterPack()) {
2286  TemplateParameterList **Data =
2287  D->getTrailingObjects<TemplateParameterList *>();
2288  for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
2289  I != N; ++I)
2290  Data[I] = Record.readTemplateParameterList();
2291  } else {
2292  // Rest of TemplateTemplateParmDecl.
2293  D->ParameterPack = Record.readInt();
2294  if (Record.readInt())
2295  D->setDefaultArgument(Reader.getContext(),
2296  Record.readTemplateArgumentLoc());
2297  }
2298 }
2299 
2301  VisitRedeclarableTemplateDecl(D);
2302 }
2303 
2305  VisitDecl(D);
2306  D->AssertExprAndFailed.setPointer(Record.readExpr());
2307  D->AssertExprAndFailed.setInt(Record.readInt());
2308  D->Message = cast_or_null<StringLiteral>(Record.readExpr());
2309  D->RParenLoc = ReadSourceLocation();
2310 }
2311 
2313  VisitDecl(D);
2314 }
2315 
2316 std::pair<uint64_t, uint64_t>
2318  uint64_t LexicalOffset = ReadLocalOffset();
2319  uint64_t VisibleOffset = ReadLocalOffset();
2320  return std::make_pair(LexicalOffset, VisibleOffset);
2321 }
2322 
2323 template <typename T>
2324 ASTDeclReader::RedeclarableResult
2326  DeclID FirstDeclID = ReadDeclID();
2327  Decl *MergeWith = nullptr;
2328 
2329  bool IsKeyDecl = ThisDeclID == FirstDeclID;
2330  bool IsFirstLocalDecl = false;
2331 
2332  uint64_t RedeclOffset = 0;
2333 
2334  // 0 indicates that this declaration was the only declaration of its entity,
2335  // and is used for space optimization.
2336  if (FirstDeclID == 0) {
2337  FirstDeclID = ThisDeclID;
2338  IsKeyDecl = true;
2339  IsFirstLocalDecl = true;
2340  } else if (unsigned N = Record.readInt()) {
2341  // This declaration was the first local declaration, but may have imported
2342  // other declarations.
2343  IsKeyDecl = N == 1;
2344  IsFirstLocalDecl = true;
2345 
2346  // We have some declarations that must be before us in our redeclaration
2347  // chain. Read them now, and remember that we ought to merge with one of
2348  // them.
2349  // FIXME: Provide a known merge target to the second and subsequent such
2350  // declaration.
2351  for (unsigned I = 0; I != N - 1; ++I)
2352  MergeWith = ReadDecl();
2353 
2354  RedeclOffset = ReadLocalOffset();
2355  } else {
2356  // This declaration was not the first local declaration. Read the first
2357  // local declaration now, to trigger the import of other redeclarations.
2358  (void)ReadDecl();
2359  }
2360 
2361  T *FirstDecl = cast_or_null<T>(Reader.GetDecl(FirstDeclID));
2362  if (FirstDecl != D) {
2363  // We delay loading of the redeclaration chain to avoid deeply nested calls.
2364  // We temporarily set the first (canonical) declaration as the previous one
2365  // which is the one that matters and mark the real previous DeclID to be
2366  // loaded & attached later on.
2368  D->First = FirstDecl->getCanonicalDecl();
2369  }
2370 
2371  T *DAsT = static_cast<T*>(D);
2372 
2373  // Note that we need to load local redeclarations of this decl and build a
2374  // decl chain for them. This must happen *after* we perform the preloading
2375  // above; this ensures that the redeclaration chain is built in the correct
2376  // order.
2377  if (IsFirstLocalDecl)
2378  Reader.PendingDeclChains.push_back(std::make_pair(DAsT, RedeclOffset));
2379 
2380  return RedeclarableResult(MergeWith, FirstDeclID, IsKeyDecl);
2381 }
2382 
2383 /// \brief Attempts to merge the given declaration (D) with another declaration
2384 /// of the same entity.
2385 template<typename T>
2387  RedeclarableResult &Redecl,
2388  DeclID TemplatePatternID) {
2389  // If modules are not available, there is no reason to perform this merge.
2390  if (!Reader.getContext().getLangOpts().Modules)
2391  return;
2392 
2393  // If we're not the canonical declaration, we don't need to merge.
2394  if (!DBase->isFirstDecl())
2395  return;
2396 
2397  T *D = static_cast<T*>(DBase);
2398 
2399  if (auto *Existing = Redecl.getKnownMergeTarget())
2400  // We already know of an existing declaration we should merge with.
2401  mergeRedeclarable(D, cast<T>(Existing), Redecl, TemplatePatternID);
2402  else if (FindExistingResult ExistingRes = findExisting(D))
2403  if (T *Existing = ExistingRes)
2404  mergeRedeclarable(D, Existing, Redecl, TemplatePatternID);
2405 }
2406 
2407 /// \brief "Cast" to type T, asserting if we don't have an implicit conversion.
2408 /// We use this to put code in a template that will only be valid for certain
2409 /// instantiations.
2410 template<typename T> static T assert_cast(T t) { return t; }
2411 template<typename T> static T assert_cast(...) {
2412  llvm_unreachable("bad assert_cast");
2413 }
2414 
2415 /// \brief Merge together the pattern declarations from two template
2416 /// declarations.
2418  RedeclarableTemplateDecl *Existing,
2419  DeclID DsID, bool IsKeyDecl) {
2420  auto *DPattern = D->getTemplatedDecl();
2421  auto *ExistingPattern = Existing->getTemplatedDecl();
2422  RedeclarableResult Result(/*MergeWith*/ ExistingPattern,
2423  DPattern->getCanonicalDecl()->getGlobalID(),
2424  IsKeyDecl);
2425 
2426  if (auto *DClass = dyn_cast<CXXRecordDecl>(DPattern)) {
2427  // Merge with any existing definition.
2428  // FIXME: This is duplicated in several places. Refactor.
2429  auto *ExistingClass =
2430  cast<CXXRecordDecl>(ExistingPattern)->getCanonicalDecl();
2431  if (auto *DDD = DClass->DefinitionData) {
2432  if (ExistingClass->DefinitionData) {
2433  MergeDefinitionData(ExistingClass, std::move(*DDD));
2434  } else {
2435  ExistingClass->DefinitionData = DClass->DefinitionData;
2436  // We may have skipped this before because we thought that DClass
2437  // was the canonical declaration.
2438  Reader.PendingDefinitions.insert(DClass);
2439  }
2440  }
2441  DClass->DefinitionData = ExistingClass->DefinitionData;
2442 
2443  return mergeRedeclarable(DClass, cast<TagDecl>(ExistingPattern),
2444  Result);
2445  }
2446  if (auto *DFunction = dyn_cast<FunctionDecl>(DPattern))
2447  return mergeRedeclarable(DFunction, cast<FunctionDecl>(ExistingPattern),
2448  Result);
2449  if (auto *DVar = dyn_cast<VarDecl>(DPattern))
2450  return mergeRedeclarable(DVar, cast<VarDecl>(ExistingPattern), Result);
2451  if (auto *DAlias = dyn_cast<TypeAliasDecl>(DPattern))
2452  return mergeRedeclarable(DAlias, cast<TypedefNameDecl>(ExistingPattern),
2453  Result);
2454  llvm_unreachable("merged an unknown kind of redeclarable template");
2455 }
2456 
2457 /// \brief Attempts to merge the given declaration (D) with another declaration
2458 /// of the same entity.
2459 template<typename T>
2461  RedeclarableResult &Redecl,
2462  DeclID TemplatePatternID) {
2463  T *D = static_cast<T*>(DBase);
2464  T *ExistingCanon = Existing->getCanonicalDecl();
2465  T *DCanon = D->getCanonicalDecl();
2466  if (ExistingCanon != DCanon) {
2467  assert(DCanon->getGlobalID() == Redecl.getFirstID() &&
2468  "already merged this declaration");
2469 
2470  // Have our redeclaration link point back at the canonical declaration
2471  // of the existing declaration, so that this declaration has the
2472  // appropriate canonical declaration.
2473  D->RedeclLink = Redeclarable<T>::PreviousDeclLink(ExistingCanon);
2474  D->First = ExistingCanon;
2475  ExistingCanon->Used |= D->Used;
2476  D->Used = false;
2477 
2478  // When we merge a namespace, update its pointer to the first namespace.
2479  // We cannot have loaded any redeclarations of this declaration yet, so
2480  // there's nothing else that needs to be updated.
2481  if (auto *Namespace = dyn_cast<NamespaceDecl>(D))
2482  Namespace->AnonOrFirstNamespaceAndInline.setPointer(
2483  assert_cast<NamespaceDecl*>(ExistingCanon));
2484 
2485  // When we merge a template, merge its pattern.
2486  if (auto *DTemplate = dyn_cast<RedeclarableTemplateDecl>(D))
2487  mergeTemplatePattern(
2488  DTemplate, assert_cast<RedeclarableTemplateDecl*>(ExistingCanon),
2489  TemplatePatternID, Redecl.isKeyDecl());
2490 
2491  // If this declaration is a key declaration, make a note of that.
2492  if (Redecl.isKeyDecl())
2493  Reader.KeyDecls[ExistingCanon].push_back(Redecl.getFirstID());
2494  }
2495 }
2496 
2497 /// \brief Attempts to merge the given declaration (D) with another declaration
2498 /// of the same entity, for the case where the entity is not actually
2499 /// redeclarable. This happens, for instance, when merging the fields of
2500 /// identical class definitions from two different modules.
2501 template<typename T>
2503  // If modules are not available, there is no reason to perform this merge.
2504  if (!Reader.getContext().getLangOpts().Modules)
2505  return;
2506 
2507  // ODR-based merging is only performed in C++. In C, identically-named things
2508  // in different translation units are not redeclarations (but may still have
2509  // compatible types).
2510  if (!Reader.getContext().getLangOpts().CPlusPlus)
2511  return;
2512 
2513  if (FindExistingResult ExistingRes = findExisting(static_cast<T*>(D)))
2514  if (T *Existing = ExistingRes)
2515  Reader.getContext().setPrimaryMergedDecl(static_cast<T *>(D),
2516  Existing->getCanonicalDecl());
2517 }
2518 
2520  VisitDecl(D);
2521  unsigned NumVars = D->varlist_size();
2523  Vars.reserve(NumVars);
2524  for (unsigned i = 0; i != NumVars; ++i) {
2525  Vars.push_back(Record.readExpr());
2526  }
2527  D->setVars(Vars);
2528 }
2529 
2531  VisitValueDecl(D);
2532  D->setLocation(ReadSourceLocation());
2533  D->setCombiner(Record.readExpr());
2534  D->setInitializer(
2535  Record.readExpr(),
2536  static_cast<OMPDeclareReductionDecl::InitKind>(Record.readInt()));
2537  D->PrevDeclInScope = ReadDeclID();
2538 }
2539 
2541  VisitVarDecl(D);
2542 }
2543 
2544 //===----------------------------------------------------------------------===//
2545 // Attribute Reading
2546 //===----------------------------------------------------------------------===//
2547 
2548 /// \brief Reads attributes from the current stream position.
2550  for (unsigned i = 0, e = Record.readInt(); i != e; ++i) {
2551  Attr *New = nullptr;
2552  attr::Kind Kind = (attr::Kind)Record.readInt();
2553  SourceRange Range = Record.readSourceRange();
2554  ASTContext &Context = getContext();
2555 
2556 #include "clang/Serialization/AttrPCHRead.inc"
2557 
2558  assert(New && "Unable to decode attribute?");
2559  Attrs.push_back(New);
2560  }
2561 }
2562 
2563 //===----------------------------------------------------------------------===//
2564 // ASTReader Implementation
2565 //===----------------------------------------------------------------------===//
2566 
2567 /// \brief Note that we have loaded the declaration with the given
2568 /// Index.
2569 ///
2570 /// This routine notes that this declaration has already been loaded,
2571 /// so that future GetDecl calls will return this declaration rather
2572 /// than trying to load a new declaration.
2573 inline void ASTReader::LoadedDecl(unsigned Index, Decl *D) {
2574  assert(!DeclsLoaded[Index] && "Decl loaded twice?");
2575  DeclsLoaded[Index] = D;
2576 }
2577 
2578 
2579 /// \brief Determine whether the consumer will be interested in seeing
2580 /// this declaration (via HandleTopLevelDecl).
2581 ///
2582 /// This routine should return true for anything that might affect
2583 /// code generation, e.g., inline function definitions, Objective-C
2584 /// declarations with metadata, etc.
2585 static bool isConsumerInterestedIn(ASTContext &Ctx, Decl *D, bool HasBody) {
2586  // An ObjCMethodDecl is never considered as "interesting" because its
2587  // implementation container always is.
2588 
2589  // An ImportDecl or VarDecl imported from a module map module will get
2590  // emitted when we import the relevant module.
2591  if (isa<ImportDecl>(D) || isa<VarDecl>(D)) {
2592  auto *M = D->getImportedOwningModule();
2593  if (M && M->Kind == Module::ModuleMapModule &&
2594  Ctx.DeclMustBeEmitted(D))
2595  return false;
2596  }
2597 
2598  if (isa<FileScopeAsmDecl>(D) ||
2599  isa<ObjCProtocolDecl>(D) ||
2600  isa<ObjCImplDecl>(D) ||
2601  isa<ImportDecl>(D) ||
2602  isa<PragmaCommentDecl>(D) ||
2603  isa<PragmaDetectMismatchDecl>(D))
2604  return true;
2605  if (isa<OMPThreadPrivateDecl>(D) || isa<OMPDeclareReductionDecl>(D))
2606  return !D->getDeclContext()->isFunctionOrMethod();
2607  if (VarDecl *Var = dyn_cast<VarDecl>(D))
2608  return Var->isFileVarDecl() &&
2609  Var->isThisDeclarationADefinition() == VarDecl::Definition;
2610  if (FunctionDecl *Func = dyn_cast<FunctionDecl>(D))
2611  return Func->doesThisDeclarationHaveABody() || HasBody;
2612 
2613  if (auto *ES = D->getASTContext().getExternalSource())
2614  if (ES->hasExternalDefinitions(D) == ExternalASTSource::EK_Never)
2615  return true;
2616 
2617  return false;
2618 }
2619 
2620 /// \brief Get the correct cursor and offset for loading a declaration.
2621 ASTReader::RecordLocation
2622 ASTReader::DeclCursorForID(DeclID ID, SourceLocation &Loc) {
2623  GlobalDeclMapType::iterator I = GlobalDeclMap.find(ID);
2624  assert(I != GlobalDeclMap.end() && "Corrupted global declaration map");
2625  ModuleFile *M = I->second;
2626  const DeclOffset &DOffs =
2627  M->DeclOffsets[ID - M->BaseDeclID - NUM_PREDEF_DECL_IDS];
2628  Loc = TranslateSourceLocation(*M, DOffs.getLocation());
2629  return RecordLocation(M, DOffs.BitOffset);
2630 }
2631 
2632 ASTReader::RecordLocation ASTReader::getLocalBitOffset(uint64_t GlobalOffset) {
2634  = GlobalBitOffsetsMap.find(GlobalOffset);
2635 
2636  assert(I != GlobalBitOffsetsMap.end() && "Corrupted global bit offsets map");
2637  return RecordLocation(I->second, GlobalOffset - I->second->GlobalBitOffset);
2638 }
2639 
2640 uint64_t ASTReader::getGlobalBitOffset(ModuleFile &M, uint32_t LocalOffset) {
2641  return LocalOffset + M.GlobalBitOffset;
2642 }
2643 
2645  const TemplateParameterList *Y);
2646 
2647 /// \brief Determine whether two template parameters are similar enough
2648 /// that they may be used in declarations of the same template.
2649 static bool isSameTemplateParameter(const NamedDecl *X,
2650  const NamedDecl *Y) {
2651  if (X->getKind() != Y->getKind())
2652  return false;
2653 
2654  if (const TemplateTypeParmDecl *TX = dyn_cast<TemplateTypeParmDecl>(X)) {
2655  const TemplateTypeParmDecl *TY = cast<TemplateTypeParmDecl>(Y);
2656  return TX->isParameterPack() == TY->isParameterPack();
2657  }
2658 
2659  if (const NonTypeTemplateParmDecl *TX = dyn_cast<NonTypeTemplateParmDecl>(X)) {
2660  const NonTypeTemplateParmDecl *TY = cast<NonTypeTemplateParmDecl>(Y);
2661  return TX->isParameterPack() == TY->isParameterPack() &&
2662  TX->getASTContext().hasSameType(TX->getType(), TY->getType());
2663  }
2664 
2665  const TemplateTemplateParmDecl *TX = cast<TemplateTemplateParmDecl>(X);
2666  const TemplateTemplateParmDecl *TY = cast<TemplateTemplateParmDecl>(Y);
2667  return TX->isParameterPack() == TY->isParameterPack() &&
2669  TY->getTemplateParameters());
2670 }
2671 
2673  if (auto *NS = X->getAsNamespace())
2674  return NS;
2675  if (auto *NAS = X->getAsNamespaceAlias())
2676  return NAS->getNamespace();
2677  return nullptr;
2678 }
2679 
2681  const NestedNameSpecifier *Y) {
2682  if (auto *NSX = getNamespace(X)) {
2683  auto *NSY = getNamespace(Y);
2684  if (!NSY || NSX->getCanonicalDecl() != NSY->getCanonicalDecl())
2685  return false;
2686  } else if (X->getKind() != Y->getKind())
2687  return false;
2688 
2689  // FIXME: For namespaces and types, we're permitted to check that the entity
2690  // is named via the same tokens. We should probably do so.
2691  switch (X->getKind()) {
2693  if (X->getAsIdentifier() != Y->getAsIdentifier())
2694  return false;
2695  break;
2698  // We've already checked that we named the same namespace.
2699  break;
2702  if (X->getAsType()->getCanonicalTypeInternal() !=
2704  return false;
2705  break;
2708  return true;
2709  }
2710 
2711  // Recurse into earlier portion of NNS, if any.
2712  auto *PX = X->getPrefix();
2713  auto *PY = Y->getPrefix();
2714  if (PX && PY)
2715  return isSameQualifier(PX, PY);
2716  return !PX && !PY;
2717 }
2718 
2719 /// \brief Determine whether two template parameter lists are similar enough
2720 /// that they may be used in declarations of the same template.
2722  const TemplateParameterList *Y) {
2723  if (X->size() != Y->size())
2724  return false;
2725 
2726  for (unsigned I = 0, N = X->size(); I != N; ++I)
2727  if (!isSameTemplateParameter(X->getParam(I), Y->getParam(I)))
2728  return false;
2729 
2730  return true;
2731 }
2732 
2733 /// Determine whether the attributes we can overload on are identical for A and
2734 /// B. Will ignore any overloadable attrs represented in the type of A and B.
2736  const FunctionDecl *B) {
2737  // Note that pass_object_size attributes are represented in the function's
2738  // ExtParameterInfo, so we don't need to check them here.
2739 
2741  // Since this is an equality check, we can ignore that enable_if attrs show up
2742  // in reverse order.
2743  for (const auto *EIA : A->specific_attrs<EnableIfAttr>())
2744  AEnableIfs.push_back(EIA);
2745 
2747  for (const auto *EIA : B->specific_attrs<EnableIfAttr>())
2748  BEnableIfs.push_back(EIA);
2749 
2750  // Two very common cases: either we have 0 enable_if attrs, or we have an
2751  // unequal number of enable_if attrs.
2752  if (AEnableIfs.empty() && BEnableIfs.empty())
2753  return true;
2754 
2755  if (AEnableIfs.size() != BEnableIfs.size())
2756  return false;
2757 
2758  llvm::FoldingSetNodeID Cand1ID, Cand2ID;
2759  for (unsigned I = 0, E = AEnableIfs.size(); I != E; ++I) {
2760  Cand1ID.clear();
2761  Cand2ID.clear();
2762 
2763  AEnableIfs[I]->getCond()->Profile(Cand1ID, A->getASTContext(), true);
2764  BEnableIfs[I]->getCond()->Profile(Cand2ID, B->getASTContext(), true);
2765  if (Cand1ID != Cand2ID)
2766  return false;
2767  }
2768 
2769  return true;
2770 }
2771 
2772 /// \brief Determine whether the two declarations refer to the same entity.
2773 static bool isSameEntity(NamedDecl *X, NamedDecl *Y) {
2774  assert(X->getDeclName() == Y->getDeclName() && "Declaration name mismatch!");
2775 
2776  if (X == Y)
2777  return true;
2778 
2779  // Must be in the same context.
2780  if (!X->getDeclContext()->getRedeclContext()->Equals(
2782  return false;
2783 
2784  // Two typedefs refer to the same entity if they have the same underlying
2785  // type.
2786  if (TypedefNameDecl *TypedefX = dyn_cast<TypedefNameDecl>(X))
2787  if (TypedefNameDecl *TypedefY = dyn_cast<TypedefNameDecl>(Y))
2788  return X->getASTContext().hasSameType(TypedefX->getUnderlyingType(),
2789  TypedefY->getUnderlyingType());
2790 
2791  // Must have the same kind.
2792  if (X->getKind() != Y->getKind())
2793  return false;
2794 
2795  // Objective-C classes and protocols with the same name always match.
2796  if (isa<ObjCInterfaceDecl>(X) || isa<ObjCProtocolDecl>(X))
2797  return true;
2798 
2799  if (isa<ClassTemplateSpecializationDecl>(X)) {
2800  // No need to handle these here: we merge them when adding them to the
2801  // template.
2802  return false;
2803  }
2804 
2805  // Compatible tags match.
2806  if (TagDecl *TagX = dyn_cast<TagDecl>(X)) {
2807  TagDecl *TagY = cast<TagDecl>(Y);
2808  return (TagX->getTagKind() == TagY->getTagKind()) ||
2809  ((TagX->getTagKind() == TTK_Struct || TagX->getTagKind() == TTK_Class ||
2810  TagX->getTagKind() == TTK_Interface) &&
2811  (TagY->getTagKind() == TTK_Struct || TagY->getTagKind() == TTK_Class ||
2812  TagY->getTagKind() == TTK_Interface));
2813  }
2814 
2815  // Functions with the same type and linkage match.
2816  // FIXME: This needs to cope with merging of prototyped/non-prototyped
2817  // functions, etc.
2818  if (FunctionDecl *FuncX = dyn_cast<FunctionDecl>(X)) {
2819  FunctionDecl *FuncY = cast<FunctionDecl>(Y);
2820  if (CXXConstructorDecl *CtorX = dyn_cast<CXXConstructorDecl>(X)) {
2821  CXXConstructorDecl *CtorY = cast<CXXConstructorDecl>(Y);
2822  if (CtorX->getInheritedConstructor() &&
2823  !isSameEntity(CtorX->getInheritedConstructor().getConstructor(),
2825  return false;
2826  }
2827 
2828  if (FuncX->isMultiVersion() != FuncY->isMultiVersion())
2829  return false;
2830 
2831  // Multiversioned functions with different feature strings are represented
2832  // as separate declarations.
2833  if (FuncX->isMultiVersion()) {
2834  const auto *TAX = FuncX->getAttr<TargetAttr>();
2835  const auto *TAY = FuncY->getAttr<TargetAttr>();
2836  assert(TAX && TAY && "Multiversion Function without target attribute");
2837 
2838  if (TAX->getFeaturesStr() != TAY->getFeaturesStr())
2839  return false;
2840  }
2841 
2842  ASTContext &C = FuncX->getASTContext();
2843  if (!C.hasSameType(FuncX->getType(), FuncY->getType())) {
2844  // We can get functions with different types on the redecl chain in C++17
2845  // if they have differing exception specifications and at least one of
2846  // the excpetion specs is unresolved.
2847  // FIXME: Do we need to check for C++14 deduced return types here too?
2848  auto *XFPT = FuncX->getType()->getAs<FunctionProtoType>();
2849  auto *YFPT = FuncY->getType()->getAs<FunctionProtoType>();
2850  if (C.getLangOpts().CPlusPlus17 && XFPT && YFPT &&
2851  (isUnresolvedExceptionSpec(XFPT->getExceptionSpecType()) ||
2853  C.hasSameFunctionTypeIgnoringExceptionSpec(FuncX->getType(),
2854  FuncY->getType()))
2855  return true;
2856  return false;
2857  }
2858  return FuncX->getLinkageInternal() == FuncY->getLinkageInternal() &&
2859  hasSameOverloadableAttrs(FuncX, FuncY);
2860  }
2861 
2862  // Variables with the same type and linkage match.
2863  if (VarDecl *VarX = dyn_cast<VarDecl>(X)) {
2864  VarDecl *VarY = cast<VarDecl>(Y);
2865  if (VarX->getLinkageInternal() == VarY->getLinkageInternal()) {
2866  ASTContext &C = VarX->getASTContext();
2867  if (C.hasSameType(VarX->getType(), VarY->getType()))
2868  return true;
2869 
2870  // We can get decls with different types on the redecl chain. Eg.
2871  // template <typename T> struct S { static T Var[]; }; // #1
2872  // template <typename T> T S<T>::Var[sizeof(T)]; // #2
2873  // Only? happens when completing an incomplete array type. In this case
2874  // when comparing #1 and #2 we should go through their element type.
2875  const ArrayType *VarXTy = C.getAsArrayType(VarX->getType());
2876  const ArrayType *VarYTy = C.getAsArrayType(VarY->getType());
2877  if (!VarXTy || !VarYTy)
2878  return false;
2879  if (VarXTy->isIncompleteArrayType() || VarYTy->isIncompleteArrayType())
2880  return C.hasSameType(VarXTy->getElementType(), VarYTy->getElementType());
2881  }
2882  return false;
2883  }
2884 
2885  // Namespaces with the same name and inlinedness match.
2886  if (NamespaceDecl *NamespaceX = dyn_cast<NamespaceDecl>(X)) {
2887  NamespaceDecl *NamespaceY = cast<NamespaceDecl>(Y);
2888  return NamespaceX->isInline() == NamespaceY->isInline();
2889  }
2890 
2891  // Identical template names and kinds match if their template parameter lists
2892  // and patterns match.
2893  if (TemplateDecl *TemplateX = dyn_cast<TemplateDecl>(X)) {
2894  TemplateDecl *TemplateY = cast<TemplateDecl>(Y);
2895  return isSameEntity(TemplateX->getTemplatedDecl(),
2896  TemplateY->getTemplatedDecl()) &&
2897  isSameTemplateParameterList(TemplateX->getTemplateParameters(),
2898  TemplateY->getTemplateParameters());
2899  }
2900 
2901  // Fields with the same name and the same type match.
2902  if (FieldDecl *FDX = dyn_cast<FieldDecl>(X)) {
2903  FieldDecl *FDY = cast<FieldDecl>(Y);
2904  // FIXME: Also check the bitwidth is odr-equivalent, if any.
2905  return X->getASTContext().hasSameType(FDX->getType(), FDY->getType());
2906  }
2907 
2908  // Indirect fields with the same target field match.
2909  if (auto *IFDX = dyn_cast<IndirectFieldDecl>(X)) {
2910  auto *IFDY = cast<IndirectFieldDecl>(Y);
2911  return IFDX->getAnonField()->getCanonicalDecl() ==
2912  IFDY->getAnonField()->getCanonicalDecl();
2913  }
2914 
2915  // Enumerators with the same name match.
2916  if (isa<EnumConstantDecl>(X))
2917  // FIXME: Also check the value is odr-equivalent.
2918  return true;
2919 
2920  // Using shadow declarations with the same target match.
2921  if (UsingShadowDecl *USX = dyn_cast<UsingShadowDecl>(X)) {
2922  UsingShadowDecl *USY = cast<UsingShadowDecl>(Y);
2923  return USX->getTargetDecl() == USY->getTargetDecl();
2924  }
2925 
2926  // Using declarations with the same qualifier match. (We already know that
2927  // the name matches.)
2928  if (auto *UX = dyn_cast<UsingDecl>(X)) {
2929  auto *UY = cast<UsingDecl>(Y);
2930  return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
2931  UX->hasTypename() == UY->hasTypename() &&
2932  UX->isAccessDeclaration() == UY->isAccessDeclaration();
2933  }
2934  if (auto *UX = dyn_cast<UnresolvedUsingValueDecl>(X)) {
2935  auto *UY = cast<UnresolvedUsingValueDecl>(Y);
2936  return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
2937  UX->isAccessDeclaration() == UY->isAccessDeclaration();
2938  }
2939  if (auto *UX = dyn_cast<UnresolvedUsingTypenameDecl>(X))
2940  return isSameQualifier(
2941  UX->getQualifier(),
2942  cast<UnresolvedUsingTypenameDecl>(Y)->getQualifier());
2943 
2944  // Namespace alias definitions with the same target match.
2945  if (auto *NAX = dyn_cast<NamespaceAliasDecl>(X)) {
2946  auto *NAY = cast<NamespaceAliasDecl>(Y);
2947  return NAX->getNamespace()->Equals(NAY->getNamespace());
2948  }
2949 
2950  return false;
2951 }
2952 
2953 /// Find the context in which we should search for previous declarations when
2954 /// looking for declarations to merge.
2955 DeclContext *ASTDeclReader::getPrimaryContextForMerging(ASTReader &Reader,
2956  DeclContext *DC) {
2957  if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(DC))
2958  return ND->getOriginalNamespace();
2959 
2960  if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(DC)) {
2961  // Try to dig out the definition.
2962  auto *DD = RD->DefinitionData;
2963  if (!DD)
2964  DD = RD->getCanonicalDecl()->DefinitionData;
2965 
2966  // If there's no definition yet, then DC's definition is added by an update
2967  // record, but we've not yet loaded that update record. In this case, we
2968  // commit to DC being the canonical definition now, and will fix this when
2969  // we load the update record.
2970  if (!DD) {
2971  DD = new (Reader.getContext()) struct CXXRecordDecl::DefinitionData(RD);
2972  RD->IsCompleteDefinition = true;
2973  RD->DefinitionData = DD;
2974  RD->getCanonicalDecl()->DefinitionData = DD;
2975 
2976  // Track that we did this horrible thing so that we can fix it later.
2977  Reader.PendingFakeDefinitionData.insert(
2978  std::make_pair(DD, ASTReader::PendingFakeDefinitionKind::Fake));
2979  }
2980 
2981  return DD->Definition;
2982  }
2983 
2984  if (EnumDecl *ED = dyn_cast<EnumDecl>(DC))
2985  return ED->getASTContext().getLangOpts().CPlusPlus? ED->getDefinition()
2986  : nullptr;
2987 
2988  // We can see the TU here only if we have no Sema object. In that case,
2989  // there's no TU scope to look in, so using the DC alone is sufficient.
2990  if (auto *TU = dyn_cast<TranslationUnitDecl>(DC))
2991  return TU;
2992 
2993  return nullptr;
2994 }
2995 
2996 ASTDeclReader::FindExistingResult::~FindExistingResult() {
2997  // Record that we had a typedef name for linkage whether or not we merge
2998  // with that declaration.
2999  if (TypedefNameForLinkage) {
3000  DeclContext *DC = New->getDeclContext()->getRedeclContext();
3001  Reader.ImportedTypedefNamesForLinkage.insert(
3002  std::make_pair(std::make_pair(DC, TypedefNameForLinkage), New));
3003  return;
3004  }
3005 
3006  if (!AddResult || Existing)
3007  return;
3008 
3009  DeclarationName Name = New->getDeclName();
3010  DeclContext *DC = New->getDeclContext()->getRedeclContext();
3012  setAnonymousDeclForMerging(Reader, New->getLexicalDeclContext(),
3013  AnonymousDeclNumber, New);
3014  } else if (DC->isTranslationUnit() &&
3015  !Reader.getContext().getLangOpts().CPlusPlus) {
3016  if (Reader.getIdResolver().tryAddTopLevelDecl(New, Name))
3017  Reader.PendingFakeLookupResults[Name.getAsIdentifierInfo()]
3018  .push_back(New);
3019  } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3020  // Add the declaration to its redeclaration context so later merging
3021  // lookups will find it.
3022  MergeDC->makeDeclVisibleInContextImpl(New, /*Internal*/true);
3023  }
3024 }
3025 
3026 /// Find the declaration that should be merged into, given the declaration found
3027 /// by name lookup. If we're merging an anonymous declaration within a typedef,
3028 /// we need a matching typedef, and we merge with the type inside it.
3030  bool IsTypedefNameForLinkage) {
3031  if (!IsTypedefNameForLinkage)
3032  return Found;
3033 
3034  // If we found a typedef declaration that gives a name to some other
3035  // declaration, then we want that inner declaration. Declarations from
3036  // AST files are handled via ImportedTypedefNamesForLinkage.
3037  if (Found->isFromASTFile())
3038  return nullptr;
3039 
3040  if (auto *TND = dyn_cast<TypedefNameDecl>(Found))
3041  return TND->getAnonDeclWithTypedefName(/*AnyRedecl*/true);
3042 
3043  return nullptr;
3044 }
3045 
3046 NamedDecl *ASTDeclReader::getAnonymousDeclForMerging(ASTReader &Reader,
3047  DeclContext *DC,
3048  unsigned Index) {
3049  // If the lexical context has been merged, look into the now-canonical
3050  // definition.
3051  if (auto *Merged = Reader.MergedDeclContexts.lookup(DC))
3052  DC = Merged;
3053 
3054  // If we've seen this before, return the canonical declaration.
3055  auto &Previous = Reader.AnonymousDeclarationsForMerging[DC];
3056  if (Index < Previous.size() && Previous[Index])
3057  return Previous[Index];
3058 
3059  // If this is the first time, but we have parsed a declaration of the context,
3060  // build the anonymous declaration list from the parsed declaration.
3061  if (!cast<Decl>(DC)->isFromASTFile()) {
3062  numberAnonymousDeclsWithin(DC, [&](NamedDecl *ND, unsigned Number) {
3063  if (Previous.size() == Number)
3064  Previous.push_back(cast<NamedDecl>(ND->getCanonicalDecl()));
3065  else
3066  Previous[Number] = cast<NamedDecl>(ND->getCanonicalDecl());
3067  });
3068  }
3069 
3070  return Index < Previous.size() ? Previous[Index] : nullptr;
3071 }
3072 
3073 void ASTDeclReader::setAnonymousDeclForMerging(ASTReader &Reader,
3074  DeclContext *DC, unsigned Index,
3075  NamedDecl *D) {
3076  if (auto *Merged = Reader.MergedDeclContexts.lookup(DC))
3077  DC = Merged;
3078 
3079  auto &Previous = Reader.AnonymousDeclarationsForMerging[DC];
3080  if (Index >= Previous.size())
3081  Previous.resize(Index + 1);
3082  if (!Previous[Index])
3083  Previous[Index] = D;
3084 }
3085 
3086 ASTDeclReader::FindExistingResult ASTDeclReader::findExisting(NamedDecl *D) {
3087  DeclarationName Name = TypedefNameForLinkage ? TypedefNameForLinkage
3088  : D->getDeclName();
3089 
3090  if (!Name && !needsAnonymousDeclarationNumber(D)) {
3091  // Don't bother trying to find unnamed declarations that are in
3092  // unmergeable contexts.
3093  FindExistingResult Result(Reader, D, /*Existing=*/nullptr,
3094  AnonymousDeclNumber, TypedefNameForLinkage);
3095  Result.suppress();
3096  return Result;
3097  }
3098 
3100  if (TypedefNameForLinkage) {
3101  auto It = Reader.ImportedTypedefNamesForLinkage.find(
3102  std::make_pair(DC, TypedefNameForLinkage));
3103  if (It != Reader.ImportedTypedefNamesForLinkage.end())
3104  if (isSameEntity(It->second, D))
3105  return FindExistingResult(Reader, D, It->second, AnonymousDeclNumber,
3106  TypedefNameForLinkage);
3107  // Go on to check in other places in case an existing typedef name
3108  // was not imported.
3109  }
3110 
3112  // This is an anonymous declaration that we may need to merge. Look it up
3113  // in its context by number.
3114  if (auto *Existing = getAnonymousDeclForMerging(
3115  Reader, D->getLexicalDeclContext(), AnonymousDeclNumber))
3116  if (isSameEntity(Existing, D))
3117  return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3118  TypedefNameForLinkage);
3119  } else if (DC->isTranslationUnit() &&
3120  !Reader.getContext().getLangOpts().CPlusPlus) {
3121  IdentifierResolver &IdResolver = Reader.getIdResolver();
3122 
3123  // Temporarily consider the identifier to be up-to-date. We don't want to
3124  // cause additional lookups here.
3125  class UpToDateIdentifierRAII {
3126  IdentifierInfo *II;
3127  bool WasOutToDate;
3128 
3129  public:
3130  explicit UpToDateIdentifierRAII(IdentifierInfo *II)
3131  : II(II), WasOutToDate(false)
3132  {
3133  if (II) {
3134  WasOutToDate = II->isOutOfDate();
3135  if (WasOutToDate)
3136  II->setOutOfDate(false);
3137  }
3138  }
3139 
3140  ~UpToDateIdentifierRAII() {
3141  if (WasOutToDate)
3142  II->setOutOfDate(true);
3143  }
3144  } UpToDate(Name.getAsIdentifierInfo());
3145 
3146  for (IdentifierResolver::iterator I = IdResolver.begin(Name),
3147  IEnd = IdResolver.end();
3148  I != IEnd; ++I) {
3149  if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3150  if (isSameEntity(Existing, D))
3151  return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3152  TypedefNameForLinkage);
3153  }
3154  } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3155  DeclContext::lookup_result R = MergeDC->noload_lookup(Name);
3156  for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E; ++I) {
3157  if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3158  if (isSameEntity(Existing, D))
3159  return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3160  TypedefNameForLinkage);
3161  }
3162  } else {
3163  // Not in a mergeable context.
3164  return FindExistingResult(Reader);
3165  }
3166 
3167  // If this declaration is from a merged context, make a note that we need to
3168  // check that the canonical definition of that context contains the decl.
3169  //
3170  // FIXME: We should do something similar if we merge two definitions of the
3171  // same template specialization into the same CXXRecordDecl.
3172  auto MergedDCIt = Reader.MergedDeclContexts.find(D->getLexicalDeclContext());
3173  if (MergedDCIt != Reader.MergedDeclContexts.end() &&
3174  MergedDCIt->second == D->getDeclContext())
3175  Reader.PendingOdrMergeChecks.push_back(D);
3176 
3177  return FindExistingResult(Reader, D, /*Existing=*/nullptr,
3178  AnonymousDeclNumber, TypedefNameForLinkage);
3179 }
3180 
3181 template<typename DeclT>
3183  return D->RedeclLink.getLatestNotUpdated();
3184 }
3186  llvm_unreachable("getMostRecentDecl on non-redeclarable declaration");
3187 }
3188 
3190  assert(D);
3191 
3192  switch (D->getKind()) {
3193 #define ABSTRACT_DECL(TYPE)
3194 #define DECL(TYPE, BASE) \
3195  case Decl::TYPE: \
3196  return getMostRecentDeclImpl(cast<TYPE##Decl>(D));
3197 #include "clang/AST/DeclNodes.inc"
3198  }
3199  llvm_unreachable("unknown decl kind");
3200 }
3201 
3202 Decl *ASTReader::getMostRecentExistingDecl(Decl *D) {
3204 }
3205 
3206 template<typename DeclT>
3209  Decl *Previous, Decl *Canon) {
3210  D->RedeclLink.setPrevious(cast<DeclT>(Previous));
3211  D->First = cast<DeclT>(Previous)->First;
3212 }
3213 
3214 namespace clang {
3215 template<>
3218  Decl *Previous, Decl *Canon) {
3219  VarDecl *VD = static_cast<VarDecl*>(D);
3220  VarDecl *PrevVD = cast<VarDecl>(Previous);
3221  D->RedeclLink.setPrevious(PrevVD);
3222  D->First = PrevVD->First;
3223 
3224  // We should keep at most one definition on the chain.
3225  // FIXME: Cache the definition once we've found it. Building a chain with
3226  // N definitions currently takes O(N^2) time here.
3228  for (VarDecl *CurD = PrevVD; CurD; CurD = CurD->getPreviousDecl()) {
3229  if (CurD->isThisDeclarationADefinition() == VarDecl::Definition) {
3230  Reader.mergeDefinitionVisibility(CurD, VD);
3232  break;
3233  }
3234  }
3235  }
3236 }
3237 
3238 template<>
3241  Decl *Previous, Decl *Canon) {
3242  FunctionDecl *FD = static_cast<FunctionDecl*>(D);
3243  FunctionDecl *PrevFD = cast<FunctionDecl>(Previous);
3244 
3245  FD->RedeclLink.setPrevious(PrevFD);
3246  FD->First = PrevFD->First;
3247 
3248  // If the previous declaration is an inline function declaration, then this
3249  // declaration is too.
3250  if (PrevFD->IsInline != FD->IsInline) {
3251  // FIXME: [dcl.fct.spec]p4:
3252  // If a function with external linkage is declared inline in one
3253  // translation unit, it shall be declared inline in all translation
3254  // units in which it appears.
3255  //
3256  // Be careful of this case:
3257  //
3258  // module A:
3259  // template<typename T> struct X { void f(); };
3260  // template<typename T> inline void X<T>::f() {}
3261  //
3262  // module B instantiates the declaration of X<int>::f
3263  // module C instantiates the definition of X<int>::f
3264  //
3265  // If module B and C are merged, we do not have a violation of this rule.
3266  FD->IsInline = true;
3267  }
3268 
3269  // If we need to propagate an exception specification along the redecl
3270  // chain, make a note of that so that we can do so later.
3271  auto *FPT = FD->getType()->getAs<FunctionProtoType>();
3272  auto *PrevFPT = PrevFD->getType()->getAs<FunctionProtoType>();
3273  if (FPT && PrevFPT) {
3274  bool IsUnresolved = isUnresolvedExceptionSpec(FPT->getExceptionSpecType());
3275  bool WasUnresolved =
3277  if (IsUnresolved != WasUnresolved)
3278  Reader.PendingExceptionSpecUpdates.insert(
3279  std::make_pair(Canon, IsUnresolved ? PrevFD : FD));
3280  }
3281 }
3282 } // end namespace clang
3283 
3285  llvm_unreachable("attachPreviousDecl on non-redeclarable declaration");
3286 }
3287 
3288 /// Inherit the default template argument from \p From to \p To. Returns
3289 /// \c false if there is no default template for \p From.
3290 template <typename ParmDecl>
3291 static bool inheritDefaultTemplateArgument(ASTContext &Context, ParmDecl *From,
3292  Decl *ToD) {
3293  auto *To = cast<ParmDecl>(ToD);
3294  if (!From->hasDefaultArgument())
3295  return false;
3296  To->setInheritedDefaultArgument(Context, From);
3297  return true;
3298 }
3299 
3301  TemplateDecl *From,
3302  TemplateDecl *To) {
3303  auto *FromTP = From->getTemplateParameters();
3304  auto *ToTP = To->getTemplateParameters();
3305  assert(FromTP->size() == ToTP->size() && "merged mismatched templates?");
3306 
3307  for (unsigned I = 0, N = FromTP->size(); I != N; ++I) {
3308  NamedDecl *FromParam = FromTP->getParam(N - I - 1);
3309  if (FromParam->isParameterPack())
3310  continue;
3311  NamedDecl *ToParam = ToTP->getParam(N - I - 1);
3312 
3313  if (auto *FTTP = dyn_cast<TemplateTypeParmDecl>(FromParam)) {
3314  if (!inheritDefaultTemplateArgument(Context, FTTP, ToParam))
3315  break;
3316  } else if (auto *FNTTP = dyn_cast<NonTypeTemplateParmDecl>(FromParam)) {
3317  if (!inheritDefaultTemplateArgument(Context, FNTTP, ToParam))
3318  break;
3319  } else {
3321  Context, cast<TemplateTemplateParmDecl>(FromParam), ToParam))
3322  break;
3323  }
3324  }
3325 }
3326 
3328  Decl *Previous, Decl *Canon) {
3329  assert(D && Previous);
3330 
3331  switch (D->getKind()) {
3332 #define ABSTRACT_DECL(TYPE)
3333 #define DECL(TYPE, BASE) \
3334  case Decl::TYPE: \
3335  attachPreviousDeclImpl(Reader, cast<TYPE##Decl>(D), Previous, Canon); \
3336  break;
3337 #include "clang/AST/DeclNodes.inc"
3338  }
3339 
3340  // If the declaration was visible in one module, a redeclaration of it in
3341  // another module remains visible even if it wouldn't be visible by itself.
3342  //
3343  // FIXME: In this case, the declaration should only be visible if a module
3344  // that makes it visible has been imported.
3345  D->IdentifierNamespace |=
3346  Previous->IdentifierNamespace &
3348 
3349  // If the declaration declares a template, it may inherit default arguments
3350  // from the previous declaration.
3351  if (TemplateDecl *TD = dyn_cast<TemplateDecl>(D))
3353  cast<TemplateDecl>(Previous), TD);
3354 }
3355 
3356 template<typename DeclT>
3358  D->RedeclLink.setLatest(cast<DeclT>(Latest));
3359 }
3361  llvm_unreachable("attachLatestDecl on non-redeclarable declaration");
3362 }
3363 
3365  assert(D && Latest);
3366 
3367  switch (D->getKind()) {
3368 #define ABSTRACT_DECL(TYPE)
3369 #define DECL(TYPE, BASE) \
3370  case Decl::TYPE: \
3371  attachLatestDeclImpl(cast<TYPE##Decl>(D), Latest); \
3372  break;
3373 #include "clang/AST/DeclNodes.inc"
3374  }
3375 }
3376 
3377 template<typename DeclT>
3379  D->RedeclLink.markIncomplete();
3380 }
3382  llvm_unreachable("markIncompleteDeclChain on non-redeclarable declaration");
3383 }
3384 
3385 void ASTReader::markIncompleteDeclChain(Decl *D) {
3386  switch (D->getKind()) {
3387 #define ABSTRACT_DECL(TYPE)
3388 #define DECL(TYPE, BASE) \
3389  case Decl::TYPE: \
3390  ASTDeclReader::markIncompleteDeclChainImpl(cast<TYPE##Decl>(D)); \
3391  break;
3392 #include "clang/AST/DeclNodes.inc"
3393  }
3394 }
3395 
3396 /// \brief Read the declaration at the given offset from the AST file.
3397 Decl *ASTReader::ReadDeclRecord(DeclID ID) {
3398  unsigned Index = ID - NUM_PREDEF_DECL_IDS;
3399  SourceLocation DeclLoc;
3400  RecordLocation Loc = DeclCursorForID(ID, DeclLoc);
3401  llvm::BitstreamCursor &DeclsCursor = Loc.F->DeclsCursor;
3402  // Keep track of where we are in the stream, then jump back there
3403  // after reading this declaration.
3404  SavedStreamPosition SavedPosition(DeclsCursor);
3405 
3406  ReadingKindTracker ReadingKind(Read_Decl, *this);
3407 
3408  // Note that we are loading a declaration record.
3409  Deserializing ADecl(this);
3410 
3411  DeclsCursor.JumpToBit(Loc.Offset);
3412  ASTRecordReader Record(*this, *Loc.F);
3413  ASTDeclReader Reader(*this, Record, Loc, ID, DeclLoc);
3414  unsigned Code = DeclsCursor.ReadCode();
3415 
3416  ASTContext &Context = getContext();
3417  Decl *D = nullptr;
3418  switch ((DeclCode)Record.readRecord(DeclsCursor, Code)) {
3419  case DECL_CONTEXT_LEXICAL:
3420  case DECL_CONTEXT_VISIBLE:
3421  llvm_unreachable("Record cannot be de-serialized with ReadDeclRecord");
3422  case DECL_TYPEDEF:
3423  D = TypedefDecl::CreateDeserialized(Context, ID);
3424  break;
3425  case DECL_TYPEALIAS:
3426  D = TypeAliasDecl::CreateDeserialized(Context, ID);
3427  break;
3428  case DECL_ENUM:
3429  D = EnumDecl::CreateDeserialized(Context, ID);
3430  break;
3431  case DECL_RECORD:
3432  D = RecordDecl::CreateDeserialized(Context, ID);
3433  break;
3434  case DECL_ENUM_CONSTANT:
3435  D = EnumConstantDecl::CreateDeserialized(Context, ID);
3436  break;
3437  case DECL_FUNCTION:
3438  D = FunctionDecl::CreateDeserialized(Context, ID);
3439  break;
3440  case DECL_LINKAGE_SPEC:
3441  D = LinkageSpecDecl::CreateDeserialized(Context, ID);
3442  break;
3443  case DECL_EXPORT:
3444  D = ExportDecl::CreateDeserialized(Context, ID);
3445  break;
3446  case DECL_LABEL:
3447  D = LabelDecl::CreateDeserialized(Context, ID);
3448  break;
3449  case DECL_NAMESPACE:
3450  D = NamespaceDecl::CreateDeserialized(Context, ID);
3451  break;
3452  case DECL_NAMESPACE_ALIAS:
3453  D = NamespaceAliasDecl::CreateDeserialized(Context, ID);
3454  break;
3455  case DECL_USING:
3456  D = UsingDecl::CreateDeserialized(Context, ID);
3457  break;
3458  case DECL_USING_PACK:
3459  D = UsingPackDecl::CreateDeserialized(Context, ID, Record.readInt());
3460  break;
3461  case DECL_USING_SHADOW:
3462  D = UsingShadowDecl::CreateDeserialized(Context, ID);
3463  break;
3466  break;
3467  case DECL_USING_DIRECTIVE:
3468  D = UsingDirectiveDecl::CreateDeserialized(Context, ID);
3469  break;
3472  break;
3475  break;
3476  case DECL_CXX_RECORD:
3477  D = CXXRecordDecl::CreateDeserialized(Context, ID);
3478  break;
3481  break;
3482  case DECL_CXX_METHOD:
3483  D = CXXMethodDecl::CreateDeserialized(Context, ID);
3484  break;
3485  case DECL_CXX_CONSTRUCTOR:
3486  D = CXXConstructorDecl::CreateDeserialized(Context, ID, false);
3487  break;
3489  D = CXXConstructorDecl::CreateDeserialized(Context, ID, true);
3490  break;
3491  case DECL_CXX_DESTRUCTOR:
3492  D = CXXDestructorDecl::CreateDeserialized(Context, ID);
3493  break;
3494  case DECL_CXX_CONVERSION:
3495  D = CXXConversionDecl::CreateDeserialized(Context, ID);
3496  break;
3497  case DECL_ACCESS_SPEC:
3498  D = AccessSpecDecl::CreateDeserialized(Context, ID);
3499  break;
3500  case DECL_FRIEND:
3501  D = FriendDecl::CreateDeserialized(Context, ID, Record.readInt());
3502  break;
3503  case DECL_FRIEND_TEMPLATE:
3504  D = FriendTemplateDecl::CreateDeserialized(Context, ID);
3505  break;
3506  case DECL_CLASS_TEMPLATE:
3507  D = ClassTemplateDecl::CreateDeserialized(Context, ID);
3508  break;
3511  break;
3514  break;
3515  case DECL_VAR_TEMPLATE:
3516  D = VarTemplateDecl::CreateDeserialized(Context, ID);
3517  break;
3520  break;
3523  break;
3526  break;
3529  break;
3532  break;
3535  break;
3538  Record.readInt());
3539  break;
3542  break;
3545  Record.readInt());
3546  break;
3549  break;
3550  case DECL_STATIC_ASSERT:
3551  D = StaticAssertDecl::CreateDeserialized(Context, ID);
3552  break;
3553  case DECL_OBJC_METHOD:
3554  D = ObjCMethodDecl::CreateDeserialized(Context, ID);
3555  break;
3556  case DECL_OBJC_INTERFACE:
3557  D = ObjCInterfaceDecl::CreateDeserialized(Context, ID);
3558  break;
3559  case DECL_OBJC_IVAR:
3560  D = ObjCIvarDecl::CreateDeserialized(Context, ID);
3561  break;
3562  case DECL_OBJC_PROTOCOL:
3563  D = ObjCProtocolDecl::CreateDeserialized(Context, ID);
3564  break;
3566  D = ObjCAtDefsFieldDecl::CreateDeserialized(Context, ID);
3567  break;
3568  case DECL_OBJC_CATEGORY:
3569  D = ObjCCategoryDecl::CreateDeserialized(Context, ID);
3570  break;
3573  break;
3576  break;
3579  break;
3580  case DECL_OBJC_PROPERTY:
3581  D = ObjCPropertyDecl::CreateDeserialized(Context, ID);
3582  break;
3585  break;
3586  case DECL_FIELD:
3587  D = FieldDecl::CreateDeserialized(Context, ID);
3588  break;
3589  case DECL_INDIRECTFIELD:
3590  D = IndirectFieldDecl::CreateDeserialized(Context, ID);
3591  break;
3592  case DECL_VAR:
3593  D = VarDecl::CreateDeserialized(Context, ID);
3594  break;
3595  case DECL_IMPLICIT_PARAM:
3596  D = ImplicitParamDecl::CreateDeserialized(Context, ID);
3597  break;
3598  case DECL_PARM_VAR:
3599  D = ParmVarDecl::CreateDeserialized(Context, ID);
3600  break;
3601  case DECL_DECOMPOSITION:
3602  D = DecompositionDecl::CreateDeserialized(Context, ID, Record.readInt());
3603  break;
3604  case DECL_BINDING:
3605  D = BindingDecl::CreateDeserialized(Context, ID);
3606  break;
3607  case DECL_FILE_SCOPE_ASM:
3608  D = FileScopeAsmDecl::CreateDeserialized(Context, ID);
3609  break;
3610  case DECL_BLOCK:
3611  D = BlockDecl::CreateDeserialized(Context, ID);
3612  break;
3613  case DECL_MS_PROPERTY:
3614  D = MSPropertyDecl::CreateDeserialized(Context, ID);
3615  break;
3616  case DECL_CAPTURED:
3617  D = CapturedDecl::CreateDeserialized(Context, ID, Record.readInt());
3618  break;
3620  Error("attempt to read a C++ base-specifier record as a declaration");
3621  return nullptr;
3623  Error("attempt to read a C++ ctor initializer record as a declaration");
3624  return nullptr;
3625  case DECL_IMPORT:
3626  // Note: last entry of the ImportDecl record is the number of stored source
3627  // locations.
3628  D = ImportDecl::CreateDeserialized(Context, ID, Record.back());
3629  break;
3631  D = OMPThreadPrivateDecl::CreateDeserialized(Context, ID, Record.readInt());
3632  break;
3635  break;
3636  case DECL_OMP_CAPTUREDEXPR:
3637  D = OMPCapturedExprDecl::CreateDeserialized(Context, ID);
3638  break;
3639  case DECL_PRAGMA_COMMENT:
3640  D = PragmaCommentDecl::CreateDeserialized(Context, ID, Record.readInt());
3641  break;
3644  Record.readInt());
3645  break;
3646  case DECL_EMPTY:
3647  D = EmptyDecl::CreateDeserialized(Context, ID);
3648  break;
3649  case DECL_OBJC_TYPE_PARAM:
3650  D = ObjCTypeParamDecl::CreateDeserialized(Context, ID);
3651  break;
3652  }
3653 
3654  assert(D && "Unknown declaration reading AST file");
3655  LoadedDecl(Index, D);
3656  // Set the DeclContext before doing any deserialization, to make sure internal
3657  // calls to Decl::getASTContext() by Decl's methods will find the
3658  // TranslationUnitDecl without crashing.
3659  D->setDeclContext(Context.getTranslationUnitDecl());
3660  Reader.Visit(D);
3661 
3662  // If this declaration is also a declaration context, get the
3663  // offsets for its tables of lexical and visible declarations.
3664  if (DeclContext *DC = dyn_cast<DeclContext>(D)) {
3665  std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
3666  if (Offsets.first &&
3667  ReadLexicalDeclContextStorage(*Loc.F, DeclsCursor, Offsets.first, DC))
3668  return nullptr;
3669  if (Offsets.second &&
3670  ReadVisibleDeclContextStorage(*Loc.F, DeclsCursor, Offsets.second, ID))
3671  return nullptr;
3672  }
3673  assert(Record.getIdx() == Record.size());
3674 
3675  // Load any relevant update records.
3676  PendingUpdateRecords.push_back(
3677  PendingUpdateRecord(ID, D, /*JustLoaded=*/true));
3678 
3679  // Load the categories after recursive loading is finished.
3680  if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(D))
3681  // If we already have a definition when deserializing the ObjCInterfaceDecl,
3682  // we put the Decl in PendingDefinitions so we can pull the categories here.
3683  if (Class->isThisDeclarationADefinition() ||
3684  PendingDefinitions.count(Class))
3685  loadObjCCategories(ID, Class);
3686 
3687  // If we have deserialized a declaration that has a definition the
3688  // AST consumer might need to know about, queue it.
3689  // We don't pass it to the consumer immediately because we may be in recursive
3690  // loading, and some declarations may still be initializing.
3691  PotentiallyInterestingDecls.push_back(
3692  InterestingDecl(D, Reader.hasPendingBody()));
3693 
3694  return D;
3695 }
3696 
3697 void ASTReader::PassInterestingDeclsToConsumer() {
3698  assert(Consumer);
3699 
3700  if (PassingDeclsToConsumer)
3701  return;
3702 
3703  // Guard variable to avoid recursively redoing the process of passing
3704  // decls to consumer.
3705  SaveAndRestore<bool> GuardPassingDeclsToConsumer(PassingDeclsToConsumer,
3706  true);
3707 
3708  // Ensure that we've loaded all potentially-interesting declarations
3709  // that need to be eagerly loaded.
3710  for (auto ID : EagerlyDeserializedDecls)
3711  GetDecl(ID);
3712  EagerlyDeserializedDecls.clear();
3713 
3714  while (!PotentiallyInterestingDecls.empty()) {
3715  InterestingDecl D = PotentiallyInterestingDecls.front();
3716  PotentiallyInterestingDecls.pop_front();
3717  if (isConsumerInterestedIn(getContext(), D.getDecl(), D.hasPendingBody()))
3718  PassInterestingDeclToConsumer(D.getDecl());
3719  }
3720 }
3721 
3722 void ASTReader::loadDeclUpdateRecords(PendingUpdateRecord &Record) {
3723  // The declaration may have been modified by files later in the chain.
3724  // If this is the case, read the record containing the updates from each file
3725  // and pass it to ASTDeclReader to make the modifications.
3726  serialization::GlobalDeclID ID = Record.ID;
3727  Decl *D = Record.D;
3728  ProcessingUpdatesRAIIObj ProcessingUpdates(*this);
3729  DeclUpdateOffsetsMap::iterator UpdI = DeclUpdateOffsets.find(ID);
3730 
3731  llvm::SmallVector<serialization::DeclID, 8> PendingLazySpecializationIDs;
3732 
3733  if (UpdI != DeclUpdateOffsets.end()) {
3734  auto UpdateOffsets = std::move(UpdI->second);
3735  DeclUpdateOffsets.erase(UpdI);
3736 
3737  // Check if this decl was interesting to the consumer. If we just loaded
3738  // the declaration, then we know it was interesting and we skip the call
3739  // to isConsumerInterestedIn because it is unsafe to call in the
3740  // current ASTReader state.
3741  bool WasInteresting =
3742  Record.JustLoaded || isConsumerInterestedIn(getContext(), D, false);
3743  for (auto &FileAndOffset : UpdateOffsets) {
3744  ModuleFile *F = FileAndOffset.first;
3745  uint64_t Offset = FileAndOffset.second;
3746  llvm::BitstreamCursor &Cursor = F->DeclsCursor;
3747  SavedStreamPosition SavedPosition(Cursor);
3748  Cursor.JumpToBit(Offset);
3749  unsigned Code = Cursor.ReadCode();
3750  ASTRecordReader Record(*this, *F);
3751  unsigned RecCode = Record.readRecord(Cursor, Code);
3752  (void)RecCode;
3753  assert(RecCode == DECL_UPDATES && "Expected DECL_UPDATES record!");
3754 
3755  ASTDeclReader Reader(*this, Record, RecordLocation(F, Offset), ID,
3756  SourceLocation());
3757  Reader.UpdateDecl(D, PendingLazySpecializationIDs);
3758 
3759  // We might have made this declaration interesting. If so, remember that
3760  // we need to hand it off to the consumer.
3761  if (!WasInteresting &&
3762  isConsumerInterestedIn(getContext(), D, Reader.hasPendingBody())) {
3763  PotentiallyInterestingDecls.push_back(
3764  InterestingDecl(D, Reader.hasPendingBody()));
3765  WasInteresting = true;
3766  }
3767  }
3768  }
3769  // Add the lazy specializations to the template.
3770  assert((PendingLazySpecializationIDs.empty() || isa<ClassTemplateDecl>(D) ||
3771  isa<FunctionTemplateDecl>(D) || isa<VarTemplateDecl>(D)) &&
3772  "Must not have pending specializations");
3773  if (auto *CTD = dyn_cast<ClassTemplateDecl>(D))
3774  ASTDeclReader::AddLazySpecializations(CTD, PendingLazySpecializationIDs);
3775  else if (auto *FTD = dyn_cast<FunctionTemplateDecl>(D))
3776  ASTDeclReader::AddLazySpecializations(FTD, PendingLazySpecializationIDs);
3777  else if (auto *VTD = dyn_cast<VarTemplateDecl>(D))
3778  ASTDeclReader::AddLazySpecializations(VTD, PendingLazySpecializationIDs);
3779  PendingLazySpecializationIDs.clear();
3780 
3781  // Load the pending visible updates for this decl context, if it has any.
3782  auto I = PendingVisibleUpdates.find(ID);
3783  if (I != PendingVisibleUpdates.end()) {
3784  auto VisibleUpdates = std::move(I->second);
3785  PendingVisibleUpdates.erase(I);
3786 
3787  auto *DC = cast<DeclContext>(D)->getPrimaryContext();
3788  for (const PendingVisibleUpdate &Update : VisibleUpdates)
3789  Lookups[DC].Table.add(
3790  Update.Mod, Update.Data,
3792  DC->setHasExternalVisibleStorage(true);
3793  }
3794 }
3795 
3796 void ASTReader::loadPendingDeclChain(Decl *FirstLocal, uint64_t LocalOffset) {
3797  // Attach FirstLocal to the end of the decl chain.
3798  Decl *CanonDecl = FirstLocal->getCanonicalDecl();
3799  if (FirstLocal != CanonDecl) {
3800  Decl *PrevMostRecent = ASTDeclReader::getMostRecentDecl(CanonDecl);
3802  *this, FirstLocal, PrevMostRecent ? PrevMostRecent : CanonDecl,
3803  CanonDecl);
3804  }
3805 
3806  if (!LocalOffset) {
3807  ASTDeclReader::attachLatestDecl(CanonDecl, FirstLocal);
3808  return;
3809  }
3810 
3811  // Load the list of other redeclarations from this module file.
3812  ModuleFile *M = getOwningModuleFile(FirstLocal);
3813  assert(M && "imported decl from no module file");
3814 
3815  llvm::BitstreamCursor &Cursor = M->DeclsCursor;
3816  SavedStreamPosition SavedPosition(Cursor);
3817  Cursor.JumpToBit(LocalOffset);
3818 
3819  RecordData Record;
3820  unsigned Code = Cursor.ReadCode();
3821  unsigned RecCode = Cursor.readRecord(Code, Record);
3822  (void)RecCode;
3823  assert(RecCode == LOCAL_REDECLARATIONS && "expected LOCAL_REDECLARATIONS record!");
3824 
3825  // FIXME: We have several different dispatches on decl kind here; maybe
3826  // we should instead generate one loop per kind and dispatch up-front?
3827  Decl *MostRecent = FirstLocal;
3828  for (unsigned I = 0, N = Record.size(); I != N; ++I) {
3829  auto *D = GetLocalDecl(*M, Record[N - I - 1]);
3830  ASTDeclReader::attachPreviousDecl(*this, D, MostRecent, CanonDecl);
3831  MostRecent = D;
3832  }
3833  ASTDeclReader::attachLatestDecl(CanonDecl, MostRecent);
3834 }
3835 
3836 namespace {
3837  /// \brief Given an ObjC interface, goes through the modules and links to the
3838  /// interface all the categories for it.
3839  class ObjCCategoriesVisitor {
3840  ASTReader &Reader;
3841  ObjCInterfaceDecl *Interface;
3842  llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized;
3843  ObjCCategoryDecl *Tail;
3844  llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap;
3845  serialization::GlobalDeclID InterfaceID;
3846  unsigned PreviousGeneration;
3847 
3848  void add(ObjCCategoryDecl *Cat) {
3849  // Only process each category once.
3850  if (!Deserialized.erase(Cat))
3851  return;
3852 
3853  // Check for duplicate categories.
3854  if (Cat->getDeclName()) {
3855  ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];
3856  if (Existing &&
3857  Reader.getOwningModuleFile(Existing)
3858  != Reader.getOwningModuleFile(Cat)) {
3859  // FIXME: We should not warn for duplicates in diamond:
3860  //
3861  // MT //
3862  // / \ //
3863  // ML MR //
3864  // \ / //
3865  // MB //
3866  //
3867  // If there are duplicates in ML/MR, there will be warning when
3868  // creating MB *and* when importing MB. We should not warn when
3869  // importing.
3870  Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def)
3871  << Interface->getDeclName() << Cat->getDeclName();
3872  Reader.Diag(Existing->getLocation(), diag::note_previous_definition);
3873  } else if (!Existing) {
3874  // Record this category.
3875  Existing = Cat;
3876  }
3877  }
3878 
3879  // Add this category to the end of the chain.
3880  if (Tail)
3882  else
3883  Interface->setCategoryListRaw(Cat);
3884  Tail = Cat;
3885  }
3886 
3887  public:
3888  ObjCCategoriesVisitor(ASTReader &Reader,
3889  ObjCInterfaceDecl *Interface,
3890  llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized,
3891  serialization::GlobalDeclID InterfaceID,
3892  unsigned PreviousGeneration)
3893  : Reader(Reader), Interface(Interface), Deserialized(Deserialized),
3894  Tail(nullptr), InterfaceID(InterfaceID),
3895  PreviousGeneration(PreviousGeneration)
3896  {
3897  // Populate the name -> category map with the set of known categories.
3898  for (auto *Cat : Interface->known_categories()) {
3899  if (Cat->getDeclName())
3900  NameCategoryMap[Cat->getDeclName()] = Cat;
3901 
3902  // Keep track of the tail of the category list.
3903  Tail = Cat;
3904  }
3905  }
3906 
3907  bool operator()(ModuleFile &M) {
3908  // If we've loaded all of the category information we care about from
3909  // this module file, we're done.
3910  if (M.Generation <= PreviousGeneration)
3911  return true;
3912 
3913  // Map global ID of the definition down to the local ID used in this
3914  // module file. If there is no such mapping, we'll find nothing here
3915  // (or in any module it imports).
3916  DeclID LocalID = Reader.mapGlobalIDToModuleFileGlobalID(M, InterfaceID);
3917  if (!LocalID)
3918  return true;
3919 
3920  // Perform a binary search to find the local redeclarations for this
3921  // declaration (if any).
3922  const ObjCCategoriesInfo Compare = { LocalID, 0 };
3923  const ObjCCategoriesInfo *Result
3924  = std::lower_bound(M.ObjCCategoriesMap,
3926  Compare);
3927  if (Result == M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap ||
3928  Result->DefinitionID != LocalID) {
3929  // We didn't find anything. If the class definition is in this module
3930  // file, then the module files it depends on cannot have any categories,
3931  // so suppress further lookup.
3932  return Reader.isDeclIDFromModule(InterfaceID, M);
3933  }
3934 
3935  // We found something. Dig out all of the categories.
3936  unsigned Offset = Result->Offset;
3937  unsigned N = M.ObjCCategories[Offset];
3938  M.ObjCCategories[Offset++] = 0; // Don't try to deserialize again
3939  for (unsigned I = 0; I != N; ++I)
3940  add(cast_or_null<ObjCCategoryDecl>(
3941  Reader.GetLocalDecl(M, M.ObjCCategories[Offset++])));
3942  return true;
3943  }
3944  };
3945 } // end anonymous namespace
3946 
3947 void ASTReader::loadObjCCategories(serialization::GlobalDeclID ID,
3948  ObjCInterfaceDecl *D,
3949  unsigned PreviousGeneration) {
3950  ObjCCategoriesVisitor Visitor(*this, D, CategoriesDeserialized, ID,
3951  PreviousGeneration);
3952  ModuleMgr.visit(Visitor);
3953 }
3954 
3955 template<typename DeclT, typename Fn>
3956 static void forAllLaterRedecls(DeclT *D, Fn F) {
3957  F(D);
3958 
3959  // Check whether we've already merged D into its redeclaration chain.
3960  // MostRecent may or may not be nullptr if D has not been merged. If
3961  // not, walk the merged redecl chain and see if it's there.
3962  auto *MostRecent = D->getMostRecentDecl();
3963  bool Found = false;
3964  for (auto *Redecl = MostRecent; Redecl && !Found;
3965  Redecl = Redecl->getPreviousDecl())
3966  Found = (Redecl == D);
3967 
3968  // If this declaration is merged, apply the functor to all later decls.
3969  if (Found) {
3970  for (auto *Redecl = MostRecent; Redecl != D;
3971  Redecl = Redecl->getPreviousDecl())
3972  F(Redecl);
3973  }
3974 }
3975 
3977  llvm::SmallVectorImpl<serialization::DeclID> &PendingLazySpecializationIDs) {
3978  while (Record.getIdx() < Record.size()) {
3979  switch ((DeclUpdateKind)Record.readInt()) {
3981  auto *RD = cast<CXXRecordDecl>(D);
3982  // FIXME: If we also have an update record for instantiating the
3983  // definition of D, we need that to happen before we get here.
3984  Decl *MD = Record.readDecl();
3985  assert(MD && "couldn't read decl from update record");
3986  // FIXME: We should call addHiddenDecl instead, to add the member
3987  // to its DeclContext.
3988  RD->addedMember(MD);
3989  break;
3990  }
3991 
3993  // It will be added to the template's lazy specialization set.
3994  PendingLazySpecializationIDs.push_back(ReadDeclID());
3995  break;
3996 
3998  NamespaceDecl *Anon = ReadDeclAs<NamespaceDecl>();
3999 
4000  // Each module has its own anonymous namespace, which is disjoint from
4001  // any other module's anonymous namespaces, so don't attach the anonymous
4002  // namespace at all.
4003  if (!Record.isModule()) {
4004  if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(D))
4005  TU->setAnonymousNamespace(Anon);
4006  else
4007  cast<NamespaceDecl>(D)->setAnonymousNamespace(Anon);
4008  }
4009  break;
4010  }
4011 
4013  VarDecl *VD = cast<VarDecl>(D);
4014  VD->NonParmVarDeclBits.IsInline = Record.readInt();
4015  VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
4016  uint64_t Val = Record.readInt();
4017  if (Val && !VD->getInit()) {
4018  VD->setInit(Record.readExpr());
4019  if (Val > 1) { // IsInitKnownICE = 1, IsInitNotICE = 2, IsInitICE = 3
4020  EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
4021  Eval->CheckedICE = true;
4022  Eval->IsICE = Val == 3;
4023  }
4024  }
4025  break;
4026  }
4027 
4029  SourceLocation POI = Record.readSourceLocation();
4030  if (VarTemplateSpecializationDecl *VTSD =
4031  dyn_cast<VarTemplateSpecializationDecl>(D)) {
4032  VTSD->setPointOfInstantiation(POI);
4033  } else if (auto *VD = dyn_cast<VarDecl>(D)) {
4034  VD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
4035  } else {
4036  auto *FD = cast<FunctionDecl>(D);
4037  if (auto *FTSInfo = FD->TemplateOrSpecialization
4038  .dyn_cast<FunctionTemplateSpecializationInfo *>())
4039  FTSInfo->setPointOfInstantiation(POI);
4040  else
4041  FD->TemplateOrSpecialization.get<MemberSpecializationInfo *>()
4042  ->setPointOfInstantiation(POI);
4043  }
4044  break;
4045  }
4046 
4048  auto Param = cast<ParmVarDecl>(D);
4049 
4050  // We have to read the default argument regardless of whether we use it
4051  // so that hypothetical further update records aren't messed up.
4052  // TODO: Add a function to skip over the next expr record.
4053  auto DefaultArg = Record.readExpr();
4054 
4055  // Only apply the update if the parameter still has an uninstantiated
4056  // default argument.
4057  if (Param->hasUninstantiatedDefaultArg())
4058  Param->setDefaultArg(DefaultArg);
4059  break;
4060  }
4061 
4063  auto FD = cast<FieldDecl>(D);
4064  auto DefaultInit = Record.readExpr();
4065 
4066  // Only apply the update if the field still has an uninstantiated
4067  // default member initializer.
4068  if (FD->hasInClassInitializer() && !FD->getInClassInitializer()) {
4069  if (DefaultInit)
4070  FD->setInClassInitializer(DefaultInit);
4071  else
4072  // Instantiation failed. We can get here if we serialized an AST for
4073  // an invalid program.
4074  FD->removeInClassInitializer();
4075  }
4076  break;
4077  }
4078 
4080  FunctionDecl *FD = cast<FunctionDecl>(D);
4081  if (Reader.PendingBodies[FD]) {
4082  // FIXME: Maybe check for ODR violations.
4083  // It's safe to stop now because this update record is always last.
4084  return;
4085  }
4086 
4087  if (Record.readInt()) {
4088  // Maintain AST consistency: any later redeclarations of this function
4089  // are inline if this one is. (We might have merged another declaration
4090  // into this one.)
4091  forAllLaterRedecls(FD, [](FunctionDecl *FD) {
4092  FD->setImplicitlyInline();
4093  });
4094  }
4095  FD->setInnerLocStart(ReadSourceLocation());
4096  ReadFunctionDefinition(FD);
4097  assert(Record.getIdx() == Record.size() && "lazy body must be last");
4098  break;
4099  }
4100 
4102  auto *RD = cast<CXXRecordDecl>(D);
4103  auto *OldDD = RD->getCanonicalDecl()->DefinitionData;
4104  bool HadRealDefinition =
4105  OldDD && (OldDD->Definition != RD ||
4106  !Reader.PendingFakeDefinitionData.count(OldDD));
4107  ReadCXXRecordDefinition(RD, /*Update*/true);
4108 
4109  // Visible update is handled separately.
4110  uint64_t LexicalOffset = ReadLocalOffset();
4111  if (!HadRealDefinition && LexicalOffset) {
4112  Record.readLexicalDeclContextStorage(LexicalOffset, RD);
4113  Reader.PendingFakeDefinitionData.erase(OldDD);
4114  }
4115 
4116  auto TSK = (TemplateSpecializationKind)Record.readInt();
4117  SourceLocation POI = ReadSourceLocation();
4118  if (MemberSpecializationInfo *MSInfo =
4119  RD->getMemberSpecializationInfo()) {
4120  MSInfo->setTemplateSpecializationKind(TSK);
4121  MSInfo->setPointOfInstantiation(POI);
4122  } else {
4124  cast<ClassTemplateSpecializationDecl>(RD);
4125  Spec->setTemplateSpecializationKind(TSK);
4126  Spec->setPointOfInstantiation(POI);
4127 
4128  if (Record.readInt()) {
4129  auto PartialSpec =
4130  ReadDeclAs<ClassTemplatePartialSpecializationDecl>();
4132  Record.readTemplateArgumentList(TemplArgs);
4133  auto *TemplArgList = TemplateArgumentList::CreateCopy(
4134  Reader.getContext(), TemplArgs);
4135 
4136  // FIXME: If we already have a partial specialization set,
4137  // check that it matches.
4138  if (!Spec->getSpecializedTemplateOrPartial()
4140  Spec->setInstantiationOf(PartialSpec, TemplArgList);
4141  }
4142  }
4143 
4144  RD->setTagKind((TagTypeKind)Record.readInt());
4145  RD->setLocation(ReadSourceLocation());
4146  RD->setLocStart(ReadSourceLocation());
4147  RD->setBraceRange(ReadSourceRange());
4148 
4149  if (Record.readInt()) {
4150  AttrVec Attrs;
4151  Record.readAttributes(Attrs);
4152  // If the declaration already has attributes, we assume that some other
4153  // AST file already loaded them.
4154  if (!D->hasAttrs())
4155  D->setAttrsImpl(Attrs, Reader.getContext());
4156  }
4157  break;
4158  }
4159 
4161  // Set the 'operator delete' directly to avoid emitting another update
4162  // record.
4163  auto *Del = ReadDeclAs<FunctionDecl>();
4164  auto *First = cast<CXXDestructorDecl>(D->getCanonicalDecl());
4165  auto *ThisArg = Record.readExpr();
4166  // FIXME: Check consistency if we have an old and new operator delete.
4167  if (!First->OperatorDelete) {
4168  First->OperatorDelete = Del;
4169  First->OperatorDeleteThisArg = ThisArg;
4170  }
4171  break;
4172  }
4173 
4176  SmallVector<QualType, 8> ExceptionStorage;
4177  Record.readExceptionSpec(ExceptionStorage, ESI);
4178 
4179  // Update this declaration's exception specification, if needed.
4180  auto *FD = cast<FunctionDecl>(D);
4181  auto *FPT = FD->getType()->castAs<FunctionProtoType>();
4182  // FIXME: If the exception specification is already present, check that it
4183  // matches.
4184  if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) {
4185  FD->setType(Reader.getContext().getFunctionType(
4186  FPT->getReturnType(), FPT->getParamTypes(),
4187  FPT->getExtProtoInfo().withExceptionSpec(ESI)));
4188 
4189  // When we get to the end of deserializing, see if there are other decls
4190  // that we need to propagate this exception specification onto.
4191  Reader.PendingExceptionSpecUpdates.insert(
4192  std::make_pair(FD->getCanonicalDecl(), FD));
4193  }
4194  break;
4195  }
4196 
4198  // FIXME: Also do this when merging redecls.
4199  QualType DeducedResultType = Record.readType();
4200  for (auto *Redecl : merged_redecls(D)) {
4201  // FIXME: If the return type is already deduced, check that it matches.
4202  FunctionDecl *FD = cast<FunctionDecl>(Redecl);
4204  DeducedResultType);
4205  }
4206  break;
4207  }
4208 
4209  case UPD_DECL_MARKED_USED: {
4210  // Maintain AST consistency: any later redeclarations are used too.
4211  D->markUsed(Reader.getContext());
4212  break;
4213  }
4214 
4215  case UPD_MANGLING_NUMBER:
4216  Reader.getContext().setManglingNumber(cast<NamedDecl>(D),
4217  Record.readInt());
4218  break;
4219 
4221  Reader.getContext().setStaticLocalNumber(cast<VarDecl>(D),
4222  Record.readInt());
4223  break;
4224 
4226  D->addAttr(OMPThreadPrivateDeclAttr::CreateImplicit(Reader.getContext(),
4227  ReadSourceRange()));
4228  break;
4229 
4230  case UPD_DECL_EXPORTED: {
4231  unsigned SubmoduleID = readSubmoduleID();
4232  auto *Exported = cast<NamedDecl>(D);
4233  if (auto *TD = dyn_cast<TagDecl>(Exported))
4234  Exported = TD->getDefinition();
4235  Module *Owner = SubmoduleID ? Reader.getSubmodule(SubmoduleID) : nullptr;
4236  if (Reader.getContext().getLangOpts().ModulesLocalVisibility) {
4237  Reader.getContext().mergeDefinitionIntoModule(cast<NamedDecl>(Exported),
4238  Owner);
4239  Reader.PendingMergedDefinitionsToDeduplicate.insert(
4240  cast<NamedDecl>(Exported));
4241  } else if (Owner && Owner->NameVisibility != Module::AllVisible) {
4242  // If Owner is made visible at some later point, make this declaration
4243  // visible too.
4244  Reader.HiddenNamesMap[Owner].push_back(Exported);
4245  } else {
4246  // The declaration is now visible.
4247  Exported->setVisibleDespiteOwningModule();
4248  }
4249  break;
4250  }
4251 
4254  AttrVec Attrs;
4255  Record.readAttributes(Attrs);
4256  assert(Attrs.size() == 1);
4257  D->addAttr(Attrs[0]);
4258  break;
4259  }
4260  }
4261 }
const uint64_t & readInt()
Returns the current value in this record, and advances to the next value.
Definition: ASTReader.h:2376
RedeclarableResult VisitTypedefNameDecl(TypedefNameDecl *TD)
void VisitTypeDecl(TypeDecl *TD)
void setCategoryNameLoc(SourceLocation Loc)
Definition: DeclObjC.h:2433
A FriendTemplateDecl record.
Definition: ASTBitCodes.h:1376
Defines the clang::ASTContext interface.
A NonTypeTemplateParmDecl record.
Definition: ASTBitCodes.h:1403
void setScopeInfo(unsigned scopeDepth, unsigned parameterIndex)
Definition: Decl.h:1548
Decl * GetLocalDecl(ModuleFile &F, uint32_t LocalID)
Reads a declaration with the given local ID in the given module.
Definition: ASTReader.h:1822
SourceLocation readSourceLocation()
Read a source location, advancing Idx.
Definition: ASTReader.h:2568
NamedDecl * getTargetDecl() const
Gets the underlying declaration which has been brought into the local scope.
Definition: DeclCXX.h:3183
void VisitClassScopeFunctionSpecializationDecl(ClassScopeFunctionSpecializationDecl *D)
static const Decl * getCanonicalDecl(const Decl *D)
void setImplicit(bool I=true)
Definition: DeclBase.h:552
Represents a function declaration or definition.
Definition: Decl.h:1696
void VisitVarDecl(VarDecl *VD)
#define MATCH_FIELD(Field)
void setAnonymousStructOrUnion(bool Anon)
Definition: Decl.h:3577
A class which contains all the information about a particular captured value.
Definition: Decl.h:3717
static ImportDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NumLocations)
Create a new, deserialized module import declaration.
Definition: Decl.cpp:4487
if(T->getSizeExpr()) TRY_TO(TraverseStmt(T -> getSizeExpr()))
void VisitImportDecl(ImportDecl *D)
A (possibly-)qualified type.
Definition: Type.h:653
void mergeMergeable(Mergeable< T > *D)
Attempts to merge the given declaration (D) with another declaration of the same entity, for the case where the entity is not actually redeclarable.
static ObjCIvarDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:1748
FunctionDecl * Function
The function template specialization that this structure describes.
Definition: DeclTemplate.h:529
Static storage duration.
Definition: Specifiers.h:277
void setDefaultArgument(TypeSourceInfo *DefArg)
Set the default argument for this template parameter.
void VisitUsingDecl(UsingDecl *D)
static UnresolvedUsingValueDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2576
static VarDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:1877
void setLParenLoc(SourceLocation L)
Definition: DeclObjC.h:842
bool tryAddTopLevelDecl(NamedDecl *D, DeclarationName Name)
Try to add the given declaration to the top level scope, if it (or a redeclaration of it) hasn&#39;t alre...
void VisitFieldDecl(FieldDecl *FD)
void VisitImplicitParamDecl(ImplicitParamDecl *PD)
This declaration has an owning module, but is only visible to lookups that occur within that module...
An OMPThreadPrivateDecl record.
Definition: ASTBitCodes.h:1439
void VisitObjCIvarDecl(ObjCIvarDecl *D)
#define OR_FIELD(Field)
void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D)
static void setNextObjCCategory(ObjCCategoryDecl *Cat, ObjCCategoryDecl *Next)
bool IsICE
Whether this statement is an integral constant expression, or in C++11, whether the statement is a co...
Definition: Decl.h:801
RedeclarableResult VisitClassTemplateSpecializationDeclImpl(ClassTemplateSpecializationDecl *D)
An instance of this object exists for each enum constant that is defined.
Definition: Decl.h:2690
void setEmbeddedInDeclarator(bool isInDeclarator)
Definition: Decl.h:3137
No linkage, which means that the entity is unique and can only be referred to from within its scope...
Definition: Linkage.h:28
StorageClass getStorageClass() const
Returns the storage class as written in the source.
Definition: Decl.h:1014
unsigned Generation
The generation of which this module file is a part.
Definition: Module.h:164
static AccessSpecDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:59
Represents the declaration of a typedef-name via the &#39;typedef&#39; type specifier.
Definition: Decl.h:2922
void setParam(unsigned i, ImplicitParamDecl *P)
Definition: Decl.h:3934
Microsoft&#39;s &#39;__super&#39; specifier, stored as a CXXRecordDecl* of the class it appeared in...
An OMPDeclareReductionDecl record.
Definition: ASTBitCodes.h:1457
void VisitEnumConstantDecl(EnumConstantDecl *ECD)
static PragmaCommentDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned ArgSize)
Definition: Decl.cpp:4141
static void attachLatestDeclImpl(Redeclarable< DeclT > *D, Decl *Latest)
unsigned getNumExpansionTypes() const
Retrieves the number of expansion types in an expanded parameter pack.
Module * getSubmodule(serialization::SubmoduleID GlobalID)
Retrieve the submodule that corresponds to a global submodule ID.
Definition: ASTReader.cpp:8348
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:86
static NamedDecl * getDeclForMerging(NamedDecl *Found, bool IsTypedefNameForLinkage)
Find the declaration that should be merged into, given the declaration found by name lookup...
A VarTemplatePartialSpecializationDecl record.
Definition: ASTBitCodes.h:1394
Selector getObjCSelector() const
getObjCSelector - Get the Objective-C selector stored in this declaration name.
NestedNameSpecifier * getPrefix() const
Return the prefix of this nested name specifier.
void setDefaultArgument(const ASTContext &C, const TemplateArgumentLoc &DefArg)
Set the default argument for this template parameter, and whether that default argument was inherited...
Defines the C++ template declaration subclasses.
NamedDecl * getTemplatedDecl() const
Get the underlying, templated declaration.
Definition: DeclTemplate.h:453
static Decl * getMostRecentDecl(Decl *D)
known_categories_range known_categories() const
Definition: DeclObjC.h:1706
void VisitCXXDestructorDecl(CXXDestructorDecl *D)
void VisitClassTemplateSpecializationDecl(ClassTemplateSpecializationDecl *D)
A record that stores the set of declarations that are lexically stored within a given DeclContext...
Definition: ASTBitCodes.h:1301
void VisitObjCCategoryDecl(ObjCCategoryDecl *D)
bool isExpandedParameterPack() const
Whether this parameter is a template template parameter pack that has a known list of different templ...
Represents an empty-declaration.
Definition: Decl.h:4098
bool isOutOfDate() const
Determine whether the information for this identifier is out of date with respect to the external sou...
void setParams(ArrayRef< ParmVarDecl *> NewParamInfo)
Definition: Decl.cpp:4079
unsigned LocalNumObjCCategoriesInMap
The number of redeclaration info entries in ObjCCategoriesMap.
Definition: Module.h:426
Class that performs name lookup into a DeclContext stored in an AST file.
Represents an array type, per C99 6.7.5.2 - Array Declarators.
Definition: Type.h:2564
Declaration of a variable template.
Represent a C++ namespace.
Definition: Decl.h:514
A ObjCPropertyDecl record.
Definition: ASTBitCodes.h:1258
void setPropertyImplementation(PropertyControl pc)
Definition: DeclObjC.h:946
static bool hasSameOverloadableAttrs(const FunctionDecl *A, const FunctionDecl *B)
Determine whether the attributes we can overload on are identical for A and B.
NamedDecl * getParam(unsigned Idx)
Definition: DeclTemplate.h:133
static FriendDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned FriendTypeNumTPLists)
Definition: DeclFriend.cpp:66
AccessSpecifier
A C++ access specifier (public, private, protected), plus the special value "none" which means differ...
Definition: Specifiers.h:95
A container of type source information.
Definition: Decl.h:86
uint64_t GlobalBitOffset
The global bit offset (or base) of this module.
Definition: Module.h:174
void readQualifierInfo(QualifierInfo &Info)
Definition: ASTReader.h:2514
void setPropertyAccessor(bool isAccessor)
Definition: DeclObjC.h:460
static void inheritDefaultTemplateArguments(ASTContext &Context, TemplateDecl *From, TemplateDecl *To)
ASTDeclReader(ASTReader &Reader, ASTRecordReader &Record, ASTReader::RecordLocation Loc, DeclID thisDeclID, SourceLocation ThisDeclLoc)
Describes the capture of a variable or of this, or of a C++1y init-capture.
Definition: LambdaCapture.h:26
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2452
This is a module that was defined by a module map and built out of header files.
Definition: Module.h:76
static CapturedDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NumParams)
Definition: Decl.cpp:4274
QualType getElementType() const
Definition: Type.h:2599
Represents a #pragma comment line.
Definition: Decl.h:139
A ClassTemplateDecl record.
Definition: ASTBitCodes.h:1379
void VisitStaticAssertDecl(StaticAssertDecl *D)
A PragmaDetectMismatchDecl record.
Definition: ASTBitCodes.h:1454
An UnresolvedUsingTypenameDecl record.
Definition: ASTBitCodes.h:1340
An identifier, stored as an IdentifierInfo*.
void setNothrow(bool Nothrow=true)
Definition: Decl.cpp:4284
void setRAngleLoc(SourceLocation Loc)
Definition: TemplateBase.h:566
FriendDecl - Represents the declaration of a friend entity, which can be a function, a type, or a templated function or type.
Definition: DeclFriend.h:54
Represents a variable declaration or definition.
Definition: Decl.h:812
void VisitNamedDecl(NamedDecl *ND)
Declaration of a redeclarable template.
Definition: DeclTemplate.h:736
An OMPCapturedExprDecl record.
Definition: ASTBitCodes.h:1448
const T * getAs() const
Member-template getAs<specific type>&#39;.
Definition: Type.h:6317
A UsingShadowDecl record.
Definition: ASTBitCodes.h:1328
const unsigned int NUM_PREDEF_DECL_IDS
The number of declaration IDs that are predefined.
Definition: ASTBitCodes.h:1195
The "__interface" keyword.
Definition: Type.h:4697
Represents a variable template specialization, which refers to a variable template with a given set o...
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:139
A TemplateTemplateParmDecl record that stores an expanded template template parameter pack...
Definition: ASTBitCodes.h:1429
A namespace, stored as a NamespaceDecl*.
void VisitClassTemplateDecl(ClassTemplateDecl *D)
Stores a list of template parameters for a TemplateDecl and its derived classes.
Definition: DeclTemplate.h:68
unsigned getODRHash() const
Definition: DeclCXX.cpp:425
void setSelfDecl(ImplicitParamDecl *SD)
Definition: DeclObjC.h:445
void VisitTypeAliasDecl(TypeAliasDecl *TD)
SpecifierKind getKind() const
Determine what kind of nested name specifier is stored.
bool isParameterPack() const
Whether this declaration is a parameter pack.
Definition: DeclBase.cpp:213
unsigned IsExplicitSpecified
Definition: Decl.h:1725
A TemplateTemplateParmDecl record.
Definition: ASTBitCodes.h:1406
Represents a parameter to a function.
Definition: Decl.h:1515
Linkage
Describes the different kinds of linkage (C++ [basic.link], C99 6.2.2) that an entity may have...
Definition: Linkage.h:25
A ObjCInterfaceDecl record.
Definition: ASTBitCodes.h:1234
void setHasExternalVisibleStorage(bool ES=true)
State whether this DeclContext has external storage for declarations visible in this context...
Definition: DeclBase.h:1905
Module * getSubmodule(serialization::SubmoduleID GlobalID)
Retrieve the submodule that corresponds to a global submodule ID.
Definition: ASTReader.h:2391
Represents the builtin template declaration which is used to implement __make_integer_seq and other b...
RedeclarableResult VisitTagDecl(TagDecl *TD)
iterator begin(DeclarationName Name)
begin - Returns an iterator for decls with the name &#39;Name&#39;.
void setTemplateSpecializationKind(TemplateSpecializationKind TSK)
Set the kind of specialization or template instantiation this is.
Definition: DeclCXX.cpp:1455
static void attachPreviousDeclImpl(ASTReader &Reader, Redeclarable< DeclT > *D, Decl *Previous, Decl *Canon)
Types, declared with &#39;struct foo&#39;, typedefs, etc.
Definition: DeclBase.h:130
A CXXConstructorDecl record for an inherited constructor.
Definition: ASTBitCodes.h:1361
Represents a struct/union/class.
Definition: Decl.h:3510
Description of a constructor that was inherited from a base class.
Definition: DeclCXX.h:2426
DeclarationName getDeclName() const
Get the actual, stored name of the declaration, which may be a special name.
Definition: Decl.h:297
Provides common interface for the Decls that can be redeclared.
Definition: Redeclarable.h:87
ObjCProtocolDecl * getCanonicalDecl() override
Retrieves the canonical declaration of this Objective-C protocol.
Definition: DeclObjC.h:2269
Represents a class template specialization, which refers to a class template with a given set of temp...
One of these records is kept for each identifier that is lexed.
void setIntegerType(QualType T)
Set the underlying integer type.
Definition: Decl.h:3393
T * readDeclAs()
Reads a declaration from the given position in the record, advancing Idx.
Definition: ASTReader.h:2490
void VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D)
void mergeRedeclarable(Redeclarable< T > *D, RedeclarableResult &Redecl, DeclID TemplatePatternID=0)
Attempts to merge the given declaration (D) with another declaration of the same entity.
static OMPThreadPrivateDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned N)
Definition: DeclOpenMP.cpp:41
void setManglingNumber(const NamedDecl *ND, unsigned Number)
void setCompleteDefinition(bool V)
Definition: Decl.h:3168
void setUninstantiatedDefaultArg(Expr *arg)
Definition: Decl.cpp:2531
static IndirectFieldDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4320
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:149
bool isInline() const
Returns true if this is an inline namespace declaration.
Definition: Decl.h:575
The results of name lookup within a DeclContext.
Definition: DeclBase.h:1182
bool CheckedICE
Whether we already checked whether this statement was an integral constant expression.
Definition: Decl.h:792
void VisitFriendTemplateDecl(FriendTemplateDecl *D)
void setLanguage(LanguageIDs L)
Set the language specified by this linkage specification.
Definition: DeclCXX.h:2847
LambdaCaptureKind
The different capture forms in a lambda introducer.
Definition: Lambda.h:34
Represents a member of a struct/union/class.
Definition: Decl.h:2488
void setBlockMissingReturnType(bool val)
Definition: Decl.h:3846
const Type * getAsType() const
Retrieve the type stored in this nested name specifier.
void setLocStart(SourceLocation L)
Definition: Decl.h:496
static CXXRecordDecl * CreateDeserialized(const ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:158
void setVisibleDespiteOwningModule()
Set that this declaration is globally visible, even if it came from a module that is not visible...
Definition: DeclBase.h:772
RedeclarableResult VisitVarTemplateSpecializationDeclImpl(VarTemplateSpecializationDecl *D)
TODO: Unify with ClassTemplateSpecializationDecl version? May require unifying ClassTemplate(Partial)...
void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D)
static TemplateArgumentList * CreateCopy(ASTContext &Context, ArrayRef< TemplateArgument > Args)
Create a new template argument list that copies the given set of template arguments.
CXXMethodDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:2101
Helper class that saves the current stream position and then restores it when destroyed.
Definition: ASTReader.h:2629
InheritedConstructor getInheritedConstructor() const
Get the constructor that this inheriting constructor is based on.
Definition: DeclCXX.h:2648
static NamespaceDecl * getNamespace(const NestedNameSpecifier *X)
void setOwningModuleID(unsigned ID)
Set the owning module ID.
Definition: DeclBase.h:627
void setStaticLocalNumber(const VarDecl *VD, unsigned Number)
void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD)
This declaration is definitely a definition.
Definition: Decl.h:1147
bool Equals(const DeclContext *DC) const
Determine whether this declaration context is equivalent to the declaration context DC...
Definition: DeclBase.h:1455
unsigned FromASTFile
Whether this declaration was loaded from an AST file.
Definition: DeclBase.h:322
void Profile(llvm::FoldingSetNodeID &ID)
Definition: DeclTemplate.h:590
clang::CharUnits operator*(clang::CharUnits::QuantityType Scale, const clang::CharUnits &CU)
Definition: CharUnits.h:208
void setNumPositiveBits(unsigned Num)
Definition: Decl.h:3413
Represents an access specifier followed by colon &#39;:&#39;.
Definition: DeclCXX.h:131
void setReturnType(QualType T)
Definition: DeclObjC.h:362
Declaration of a function specialization at template class scope.
static StaticAssertDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2624
TypeSourceInfo * getTypeSourceInfo()
Reads a declarator info from the given record, advancing Idx.
Definition: ASTReader.h:2457
void VisitLabelDecl(LabelDecl *LD)
for(const auto &A :T->param_types())
static NamespaceDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2372
void setDeclImplementation(ImplementationControl ic)
Definition: DeclObjC.h:498
Describes a module or submodule.
Definition: Module.h:65
void setDefaultArgument(Expr *DefArg)
Set the default argument for this template parameter, and whether that default argument was inherited...
A IndirectFieldDecl record.
Definition: ASTBitCodes.h:1421
size_t size() const
The length of this record.
Definition: ASTReader.h:2366
static OMPCapturedExprDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclOpenMP.cpp:98
iterator end()
end - Returns an iterator that has &#39;finished&#39;.
Provides information about a function template specialization, which is a FunctionDecl that has been ...
Definition: DeclTemplate.h:507
Represents a C++ using-declaration.
Definition: DeclCXX.h:3334
Common * getCommonPtr() const
Definition: DeclTemplate.h:998
void setUsingLoc(SourceLocation L)
Set the source location of the &#39;using&#39; keyword.
Definition: DeclCXX.h:3370
void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D)
IdentifierInfo * getAsIdentifier() const
Retrieve the identifier stored in this nested name specifier.
static llvm::iterator_range< MergedRedeclIterator< DeclT > > merged_redecls(DeclT *D)
ObjCContainerDecl - Represents a container for method declarations.
Definition: DeclObjC.h:986
void setAccessControl(AccessControl ac)
Definition: DeclObjC.h:2001
TagKind getTagKind() const
Definition: Decl.h:3178
static void attachLatestDecl(Decl *D, Decl *latest)
< Capturing the *this object by copy
Definition: Lambda.h:37
RedeclarableResult VisitVarDeclImpl(VarDecl *D)
DeclLink RedeclLink
Points to the next redeclaration in the chain.
Definition: Redeclarable.h:190
An AccessSpecDecl record.
Definition: ASTBitCodes.h:1370
void setAtLoc(SourceLocation L)
Definition: DeclObjC.h:839
A convenient class for passing around template argument information.
Definition: TemplateBase.h:546
uint32_t Offset
Definition: CacheTokens.cpp:43
A ConstructorUsingShadowDecl record.
Definition: ASTBitCodes.h:1331
A UsingDirecitveDecl record.
Definition: ASTBitCodes.h:1334
void ReadFunctionDefinition(FunctionDecl *FD)
NamespaceAliasDecl * getAsNamespaceAlias() const
Retrieve the namespace alias stored in this nested name specifier.
static UnresolvedUsingTypenameDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2606
void VisitCXXRecordDecl(CXXRecordDecl *D)
static ClassTemplateSpecializationDecl * CreateDeserialized(ASTContext &C, unsigned ID)
void setSuperClass(ObjCInterfaceDecl *superCls)
Definition: DeclObjC.h:2712
A DecompositionDecl record.
Definition: ASTBitCodes.h:1279
Represents a declaration of a type.
Definition: Decl.h:2778
void setHasObjectMember(bool val)
Definition: Decl.h:3582
void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D)
void VisitMSPropertyDecl(MSPropertyDecl *FD)
static ObjCCategoryImplDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:2022
void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D)
ASTContext & getContext()
Retrieve the AST context that this AST reader supplements.
Definition: ASTReader.h:2282
MemberSpecializationInfo * getMemberSpecializationInfo() const
If this enumeration is an instantiation of a member enumeration of a class template specialization...
Definition: Decl.h:3491
DeclID VisitTemplateDecl(TemplateDecl *D)
SourceRange readSourceRange()
Read a source range, advancing Idx.
Definition: ASTReader.h:2573
void setClassInterface(ObjCInterfaceDecl *D)
Definition: DeclObjC.h:2768
void setInstantiationOf(ClassTemplatePartialSpecializationDecl *PartialSpec, const TemplateArgumentList *TemplateArgs)
Note that this class template specialization is actually an instantiation of the given class template...
CXXRecordDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:716
static FileScopeAsmDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4422
void VisitCXXMethodDecl(CXXMethodDecl *D)
static TypeAliasDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4392
A ClassTemplateSpecializationDecl record.
Definition: ASTBitCodes.h:1382
Represents an Objective-C protocol declaration.
Definition: DeclObjC.h:2083
DeclContext * getLexicalDeclContext()
getLexicalDeclContext - The declaration context where this Decl was lexically declared (LexicalDC)...
Definition: DeclBase.h:820
void setNumNegativeBits(unsigned Num)
Definition: Decl.h:3430
static bool isSameEntity(NamedDecl *X, NamedDecl *Y)
Determine whether the two declarations refer to the same entity.
static FunctionTemplateSpecializationInfo * Create(ASTContext &C, FunctionDecl *FD, FunctionTemplateDecl *Template, TemplateSpecializationKind TSK, const TemplateArgumentList *TemplateArgs, const TemplateArgumentListInfo *TemplateArgsAsWritten, SourceLocation POI)
Represents the body of a CapturedStmt, and serves as its DeclContext.
Definition: Decl.h:3883
Represents an ObjC class declaration.
Definition: DeclObjC.h:1191
Represents a linkage specification.
Definition: DeclCXX.h:2798
static ParmVarDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:2473
void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D)
CXXRecordDecl * getTemplatedDecl() const
Get the underlying class declarations of the template.
bool isParameterPack() const
Whether this template template parameter is a template parameter pack.
A binding in a decomposition declaration.
Definition: DeclCXX.h:3777
MemberSpecializationInfo * getMemberSpecializationInfo() const
If this function is an instantiation of a member function of a class template specialization, retrieves the member specialization information.
Definition: Decl.cpp:3219
void setInitVal(const llvm::APSInt &V)
Definition: Decl.h:2714
Ordinary names.
Definition: DeclBase.h:144
void setInitExpr(Expr *E)
Definition: Decl.h:2713
void setCachedLinkage(Linkage L) const
Definition: DeclBase.h:394
void setLocStart(SourceLocation L)
Definition: Decl.h:2806
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclBase.h:869
void setGetterCXXConstructor(Expr *getterCXXConstructor)
Definition: DeclObjC.h:2872
lookup_result lookup(DeclarationName Name) const
lookup - Find the declarations (if any) with the given Name in this context.
Definition: DeclBase.cpp:1536
StorageDuration getStorageDuration() const
Get the storage duration of this variable, per C++ [basic.stc].
Definition: Decl.h:1075
bool isExpandedParameterPack() const
Whether this parameter is a non-type template parameter pack that has a known list of different types...
void setInline(bool Inline)
Set whether this is an inline namespace declaration.
Definition: Decl.h:580
static CXXDeductionGuideDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:1681
ObjCPropertyImplDecl - Represents implementation declaration of a property in a class or category imp...
Definition: DeclObjC.h:2778
llvm::FoldingSetVector< FunctionTemplateSpecializationInfo > Specializations
The function template specializations for this function template, including explicit specializations ...
Definition: DeclTemplate.h:976
void adjustDeducedFunctionResultType(FunctionDecl *FD, QualType ResultType)
Change the result type of a function type once it is deduced.
void setVariadic(bool isVar)
Definition: DeclObjC.h:455
static TemplateTypeParmDecl * CreateDeserialized(const ASTContext &C, unsigned ID)
typename Representation::iterator iterator
Represents the declaration of a typedef-name via a C++11 alias-declaration.
Definition: Decl.h:2942
Represents a prototype with parameter type info, e.g.
Definition: Type.h:3274
RedeclarableResult VisitRedeclarable(Redeclarable< T > *D)
void setHasDestructors(bool val)
Definition: DeclObjC.h:2679
void VisitObjCContainerDecl(ObjCContainerDecl *D)
static ObjCCompatibleAliasDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:2176
void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D)
CXXDestructorDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:2715
Represents a ValueDecl that came out of a declarator.
Definition: Decl.h:688
A CXXDeductionGuideDecl record.
Definition: ASTBitCodes.h:1352
void VisitParmVarDecl(ParmVarDecl *PD)
bool isParameterPack() const
Whether this parameter is a non-type template parameter pack.
void VisitLinkageSpecDecl(LinkageSpecDecl *D)
void setIvarRBraceLoc(SourceLocation Loc)
Definition: DeclObjC.h:2716
A StaticAssertDecl record.
Definition: ASTBitCodes.h:1412
llvm::FoldingSetVector< ClassTemplatePartialSpecializationDecl > PartialSpecializations
The class template partial specializations for this class template.
A VarTemplateSpecializationDecl record.
Definition: ASTBitCodes.h:1391
void VisitUsingPackDecl(UsingPackDecl *D)
void VisitUsingShadowDecl(UsingShadowDecl *D)
void VisitVarTemplatePartialSpecializationDecl(VarTemplatePartialSpecializationDecl *D)
TODO: Unify with ClassTemplatePartialSpecializationDecl version? May require unifying ClassTemplate(P...
void setNextIvar(ObjCIvarDecl *ivar)
Definition: DeclObjC.h:1999
void setSynthesize(bool synth)
Definition: DeclObjC.h:2009
void VisitFriendDecl(FriendDecl *D)
An ObjCTypeParamDecl record.
Definition: ASTBitCodes.h:1445
void VisitDecl(Decl *D)
A record containing CXXBaseSpecifiers.
Definition: ASTBitCodes.h:1415
DiagnosticBuilder Diag(unsigned DiagID) const
Report a diagnostic.
Definition: ASTReader.cpp:8997
void setType(QualType T, TypeSourceInfo *TSI)
Definition: DeclObjC.h:848
TemplateParameterList * getTemplateParameters() const
Get the list of template parameters.
Definition: DeclTemplate.h:432
bool isCanonicalDecl() const
Whether this particular Decl is a canonical one.
Definition: DeclBase.h:875
void setGetterMethodDecl(ObjCMethodDecl *gDecl)
Definition: DeclObjC.h:940
Represents a shadow constructor declaration introduced into a class by a C++11 using-declaration that...
Definition: DeclCXX.h:3222
Pepresents a block literal declaration, which is like an unnamed FunctionDecl.
Definition: Decl.h:3713
NamespaceDecl * getAsNamespace() const
Retrieve the namespace stored in this nested name specifier.
bool isMultiVersion() const
True if this function is considered a multiversioned function.
Definition: Decl.h:2171
Represent the declaration of a variable (in which case it is an lvalue) a function (in which case it ...
Definition: Decl.h:636
Expr - This represents one expression.
Definition: Expr.h:106
A ObjCCategoryImplDecl record.
Definition: ASTBitCodes.h:1249
void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *GD)
void setBitWidth(Expr *Width)
Set the bit-field width for this member.
Definition: Decl.h:2590
llvm::FoldingSetVector< VarTemplatePartialSpecializationDecl > PartialSpecializations
The variable template partial specializations for this variable template.
static LinkageSpecDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2316
A ObjCPropertyImplDecl record.
Definition: ASTBitCodes.h:1261
const FunctionProtoType * T
StateNode * Previous
Declaration of a template type parameter.
void setSetterMethodDecl(ObjCMethodDecl *gDecl)
Definition: DeclObjC.h:943
Represents a C++ destructor within a class.
Definition: DeclCXX.h:2675
const internal::VariadicAllOfMatcher< Decl > decl
Matches declarations.
void setInit(Expr *I)
Definition: Decl.cpp:2157
void setInvalidDecl(bool Invalid=true)
setInvalidDecl - Indicates the Decl had a semantic error.
Definition: DeclBase.cpp:132
A CXXConstructorDecl record.
Definition: ASTBitCodes.h:1358
void VisitTypedefDecl(TypedefDecl *TD)
Module * getImportedOwningModule() const
Get the imported owning module, if this decl is from an imported (non-local) module.
Definition: DeclBase.h:721
void setContextParam(unsigned i, ImplicitParamDecl *P)
Definition: Decl.h:3952
void setAtEndRange(SourceRange atEnd)
Definition: DeclObjC.h:1141
void setRBraceLoc(SourceLocation L)
Definition: DeclCXX.h:2859
static DeclLink PreviousDeclLink(decl_type *D)
Definition: Redeclarable.h:171
DeclContext * getDeclContext()
Definition: DeclBase.h:425
A record containing CXXCtorInitializers.
Definition: ASTBitCodes.h:1418
A VarTemplateDecl record.
Definition: ASTBitCodes.h:1388
IdentifierResolver - Keeps track of shadowed decls on enclosing scopes.
static ObjCTypeParamList * create(ASTContext &ctx, SourceLocation lAngleLoc, ArrayRef< ObjCTypeParamDecl *> typeParams, SourceLocation rAngleLoc)
Create a new Objective-C type parameter list.
Definition: DeclObjC.cpp:1395
void setMemberSpecialization()
Note that this member template is a specialization.
Definition: DeclTemplate.h:883
Decl * readDecl()
Reads a declaration from the given position in a record in the given module, advancing Idx...
Definition: ASTReader.h:2480
NonTypeTemplateParmDecl - Declares a non-type template parameter, e.g., "Size" in.
bool isTemplateParameter() const
isTemplateParameter - Determines whether this declaration is a template parameter.
Definition: DeclBase.h:1959
void setDefined(bool isDefined)
Definition: DeclObjC.h:463
bool isTemplateParameterPack() const
isTemplateParameter - Determines whether this declaration is a template parameter pack...
Definition: DeclBase.cpp:201
void setCompleteDefinitionRequired(bool V=true)
Definition: Decl.h:3170
RedeclarableResult VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D)
Information about a module that has been loaded by the ASTReader.
Definition: Module.h:100
llvm::PointerUnion< ClassTemplateDecl *, ClassTemplatePartialSpecializationDecl * > getSpecializedTemplateOrPartial() const
Retrieve the class template or class template partial specialization which was specialized by this...
A namespace alias, stored as a NamespaceAliasDecl*.
static void attachPreviousDecl(ASTReader &Reader, Decl *D, Decl *Previous, Decl *Canon)
IdentifierInfo * getAsIdentifierInfo() const
getAsIdentifierInfo - Retrieve the IdentifierInfo * stored in this declaration name, or NULL if this declaration name isn&#39;t a simple identifier.
const uint64_t & back() const
The last element in this record.
Definition: ASTReader.h:2372
A CXXDestructorDecl record.
Definition: ASTBitCodes.h:1364
SmallVector< uint64_t, 1 > ObjCCategories
The Objective-C category lists for categories known to this module.
Definition: Module.h:430
unsigned IsCopyDeductionCandidate
[C++17] Only used by CXXDeductionGuideDecl.
Definition: Decl.h:1768
A NonTypeTemplateParmDecl record that stores an expanded non-type template parameter pack...
Definition: ASTBitCodes.h:1425
static NamespaceAliasDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2434
static CXXConstructorDecl * CreateDeserialized(ASTContext &C, unsigned ID, bool InheritsConstructor)
Definition: DeclCXX.cpp:2102
bool isFunctionOrMethod() const
Definition: DeclBase.h:1384
StorageClass
Storage classes.
Definition: Specifiers.h:203
static bool isConsumerInterestedIn(ASTContext &Ctx, Decl *D, bool HasBody)
Determine whether the consumer will be interested in seeing this declaration (via HandleTopLevelDecl)...
PragmaMSCommentKind
Definition: PragmaKinds.h:15
This declaration has an owning module, and is visible when that module is imported.
A NamespaceAliasDecl record.
Definition: ASTBitCodes.h:1319
void setTypename(bool TN)
Sets whether the using declaration has &#39;typename&#39;.
Definition: DeclCXX.h:3392
Declaration of an alias template.
unsigned IsScopedUsingClassTag
If this tag declaration is a scoped enum, then this is true if the scoped enum was declared using the...
Definition: Decl.h:3009
void setModedTypeSourceInfo(TypeSourceInfo *unmodedTSI, QualType modedTy)
Definition: Decl.h:2886
unsigned getNumExpansionTemplateParameters() const
Retrieves the number of expansion template parameters in an expanded parameter pack.
QualType getFunctionType(QualType ResultTy, ArrayRef< QualType > Args, const FunctionProtoType::ExtProtoInfo &EPI) const
Return a normal function type with a typed argument list.
Definition: ASTContext.h:1344
void setLocation(SourceLocation L)
Definition: DeclBase.h:417
TemplateTemplateParmDecl - Declares a template template parameter, e.g., "T" in.
void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D)
An ImplicitParamDecl record.
Definition: ASTBitCodes.h:1273
void setIvarRBraceLoc(SourceLocation Loc)
Definition: DeclObjC.h:2437
void VisitDecompositionDecl(DecompositionDecl *DD)
Represents a C++ deduction guide declaration.
Definition: DeclCXX.h:1966
Represents a C++ conversion function within a class.
Definition: DeclCXX.h:2737
static UsingDirectiveDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2337
An EnumConstantDecl record.
Definition: ASTBitCodes.h:1225
static ObjCTypeParamDecl * CreateDeserialized(ASTContext &ctx, unsigned ID)
Definition: DeclObjC.cpp:1362
std::string readString()
Read a string, advancing Idx.
Definition: ASTReader.h:2593
void VisitNamespaceAliasDecl(NamespaceAliasDecl *D)
An ImportDecl recording a module import.
Definition: ASTBitCodes.h:1436
A ObjCCategoryDecl record.
Definition: ASTBitCodes.h:1246
void setDeclContext(DeclContext *DC)
setDeclContext - Set both the semantic and lexical DeclContext to DC.
Definition: DeclBase.cpp:297
static ObjCMethodDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:784
static void AddLazySpecializations(T *D, SmallVectorImpl< serialization::DeclID > &IDs)
decl_type * getFirstDecl()
Return the first declaration of this declaration or itself if this is the only declaration.
Definition: Redeclarable.h:220
void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D)
void VisitObjCProtocolDecl(ObjCProtocolDecl *D)
A ObjCCompatibleAliasDecl record.
Definition: ASTBitCodes.h:1255
bool hasAttrs() const
Definition: DeclBase.h:471
void VisitPragmaCommentDecl(PragmaCommentDecl *D)
void mergeDefinitionVisibility(NamedDecl *Def, NamedDecl *MergedDef)
Note that MergedDef is a redefinition of the canonical definition Def, so Def should be visible whene...
Definition: ASTReader.cpp:3761
static TypeAliasTemplateDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Create an empty alias template node.
unsigned readRecord(llvm::BitstreamCursor &Cursor, unsigned AbbrevID)
Reads a record with id AbbrevID from Cursor, resetting the internal state.
void setIsVariadic(bool value)
Definition: Decl.h:3788
void addAttr(Attr *A)
Definition: DeclBase.h:484
static bool isSameQualifier(const NestedNameSpecifier *X, const NestedNameSpecifier *Y)
void VisitCXXConstructorDecl(CXXConstructorDecl *D)
static PragmaDetectMismatchDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NameValueSize)
Definition: Decl.cpp:4167
uint32_t SubmoduleID
An ID number that refers to a submodule in a module file.
Definition: ASTBitCodes.h:172
Represents a C++ Modules TS module export declaration.
Definition: Decl.h:4053
A struct with extended info about a syntactic name qualifier, to be used for the case of out-of-line ...
Definition: Decl.h:661
void setColonLoc(SourceLocation CLoc)
Sets the location of the colon.
Definition: DeclCXX.h:156
An UnresolvedUsingValueDecl record.
Definition: ASTBitCodes.h:1337
#define false
Definition: stdbool.h:33
The "struct" keyword.
Definition: Type.h:4694
void VisitDeclaratorDecl(DeclaratorDecl *DD)
static ObjCProtocolDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:1831
static EnumConstantDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4294
Kind
static UsingShadowDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2459
decl_type * getPreviousDecl()
Return the previous declaration of this declaration or NULL if this is the first declaration.
Definition: Redeclarable.h:208
void setIsConversionFromLambda(bool val)
Definition: Decl.h:3849
static void markIncompleteDeclChainImpl(Redeclarable< DeclT > *D)
static CXXDestructorDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2246
bool isParameterPack() const
Returns whether this is a parameter pack.
Encodes a location in the source.
static EmptyDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4434
void setTopLevelDeclInObjCContainer(bool V=true)
Definition: DeclBase.h:590
static TemplateTemplateParmDecl * CreateDeserialized(ASTContext &C, unsigned ID)
void setModuleOwnershipKind(ModuleOwnershipKind MOK)
Set whether this declaration is hidden from name lookup.
Definition: DeclBase.h:783
This represents &#39;#pragma omp declare reduction ...&#39; directive.
Definition: DeclOpenMP.h:102
A record that stores the set of declarations that are visible from a given DeclContext.
Definition: ASTBitCodes.h:1310
Pseudo declaration for capturing expressions.
Definition: DeclOpenMP.h:187
void setIvarLBraceLoc(SourceLocation Loc)
Definition: DeclObjC.h:2435
void setBraceRange(SourceRange R)
Definition: Decl.h:3096
void setAtStartLoc(SourceLocation Loc)
Definition: DeclObjC.h:1134
void VisitEmptyDecl(EmptyDecl *D)
void setAnonymousNamespace(NamespaceDecl *D)
Definition: Decl.h:601
NameVisibilityKind NameVisibility
The visibility of names within this particular module.
Definition: Module.h:271
void setFreeStanding(bool isFreeStanding=true)
Definition: Decl.h:3142
void setObjCDeclQualifier(ObjCDeclQualifier QV)
Definition: DeclObjC.h:302
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:2968
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:378
static DecompositionDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NumBindings)
Definition: DeclCXX.cpp:2667
void setReferenced(bool R=true)
Definition: DeclBase.h:581
Represents the declaration of a label.
Definition: Decl.h:468
void mergeTemplatePattern(RedeclarableTemplateDecl *D, RedeclarableTemplateDecl *Existing, DeclID DsID, bool IsKeyDecl)
Merge together the pattern declarations from two template declarations.
void setPropertyAttributesAsWritten(PropertyAttributeKind PRVal)
Definition: DeclObjC.h:873
Represents a dependent using declaration which was not marked with typename.
Definition: DeclCXX.h:3553
void setPosition(unsigned P)
void VisitObjCImplDecl(ObjCImplDecl *D)
Represents a static or instance method of a struct/union/class.
Definition: DeclCXX.h:2019
void setHasFlexibleArrayMember(bool V)
Definition: Decl.h:3563
EnumDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: Decl.h:3309
Represents a C++ nested name specifier, such as "\::std::vector<int>::".
void VisitBindingDecl(BindingDecl *BD)
A TemplateTypeParmDecl record.
Definition: ASTBitCodes.h:1400
void demoteThisDefinitionToDeclaration()
This is a definition which should be demoted to a declaration.
Definition: Decl.h:1293
bool isFirstDecl() const
True if this is the first declaration in its redeclaration chain.
Definition: Redeclarable.h:227
Data that is common to all of the declarations of a given function template.
Definition: DeclTemplate.h:973
const ArrayType * getAsArrayType(QualType T) const
Type Query functions.
ObjCCategoryDecl - Represents a category declaration.
Definition: DeclObjC.h:2299
QualType getInjectedClassNameSpecialization()
Retrieve the template specialization type of the injected-class-name for this class template...
void readDeclarationNameLoc(DeclarationNameLoc &DNLoc, DeclarationName Name)
Definition: ASTReader.h:2507
void addDecl(NamedDecl *D)
Definition: UnresolvedSet.h:89
void setDeclName(DeclarationName N)
Set the name of this declaration.
Definition: Decl.h:300
static MSPropertyDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2703
SourceLocation getLocation() const
Definition: ASTBitCodes.h:236
Common * getCommonPtr() const
static ConstructorUsingShadowDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2482
Describes the categories of an Objective-C class.
Definition: ASTBitCodes.h:1946
bool isDeclIDFromModule(serialization::GlobalDeclID ID, ModuleFile &M) const
Returns true if global DeclID ID originated from module M.
Definition: ASTReader.cpp:7110
void init(NamedDecl *templatedDecl, TemplateParameterList *templateParams)
Initialize the underlying templated declaration and template parameters.
Definition: DeclTemplate.h:496
void setPointOfInstantiation(SourceLocation Loc)
void setTagKind(TagKind TK)
Definition: Decl.h:3182
unsigned getIdx() const
The current position in this record.
Definition: ASTReader.h:2363
CommonBase * Common
Pointer to the common data shared by all declarations of this template.
Definition: DeclTemplate.h:824
static FunctionDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4250
Represents one property declaration in an Objective-C interface.
Definition: DeclObjC.h:746
void setProtocolList(ObjCProtocolDecl *const *List, unsigned Num, const SourceLocation *Locs, ASTContext &C)
setProtocolList - Set the list of protocols that this interface implements.
Definition: DeclObjC.h:2363
bool isFromASTFile() const
Determine whether this declaration came from an AST file (such as a precompiled header or module) rat...
Definition: DeclBase.h:694
uint32_t TypeID
An ID number that refers to a type in an AST file.
Definition: ASTBitCodes.h:86
void setInitializer(Expr *E, InitKind IK)
Set initializer expression for the declare reduction construct.
Definition: DeclOpenMP.h:159
A simple visitor class that helps create declaration visitors.
Definition: DeclVisitor.h:70
const unsigned int DECL_UPDATES
Record of updates for a declaration that was modified after being deserialized.
Definition: ASTBitCodes.h:1199
void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D)
void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D)
void VisitRecordDecl(RecordDecl *RD)
static T assert_cast(T t)
"Cast" to type T, asserting if we don&#39;t have an implicit conversion.
serialization::SubmoduleID getGlobalSubmoduleID(unsigned LocalID)
Retrieve the global submodule ID its local ID number.
Definition: ASTReader.h:2386
static VarTemplateDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Create an empty variable template node.
A NamespaceDecl record.
Definition: ASTBitCodes.h:1316
Represents a C++11 static_assert declaration.
Definition: DeclCXX.h:3728
__DEVICE__ void * memcpy(void *__a, const void *__b, size_t __c)
uint32_t BitOffset
Offset in the AST file.
Definition: ASTBitCodes.h:226
void setLAngleLoc(SourceLocation Loc)
Definition: TemplateBase.h:565
void VisitExportDecl(ExportDecl *D)
void addArgument(const TemplateArgumentLoc &Loc)
Definition: TemplateBase.h:586
File is a PCH file treated as the actual main file.
Definition: Module.h:52
Linkage getLinkageInternal() const
Determine what kind of linkage this entity has.
Definition: Decl.cpp:1043
ExceptionSpecificationType getExceptionSpecType() const
Get the kind of exception specification on this function.
Definition: Type.h:3530
Describes a module import declaration, which makes the contents of the named module visible in the cu...
Definition: Decl.h:3988
serialization::DeclID readDeclID()
Reads a declaration ID from the given position in this record.
Definition: ASTReader.h:2474
void VisitValueDecl(ValueDecl *VD)
A ObjCProtocolDecl record.
Definition: ASTBitCodes.h:1237
void setDeclaredWithTypename(bool withTypename)
Set whether this template type parameter was declared with the &#39;typename&#39; or &#39;class&#39; keyword...
bool hasPendingBody() const
Determine whether this declaration has a pending body.
DeclarationNameLoc - Additional source/type location info for a declaration name. ...
CXXConstructorDecl * getConstructor() const
Definition: DeclCXX.h:2439
void setSetterCXXAssignment(Expr *setterCXXAssignment)
Definition: DeclObjC.h:2880
void VisitEnumDecl(EnumDecl *ED)
static TypedefDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4380
Base class for declarations which introduce a typedef-name.
Definition: Decl.h:2820
void setPropertyDecl(ObjCPropertyDecl *Prop)
Definition: DeclObjC.h:2840
A CXXConversionDecl record.
Definition: ASTBitCodes.h:1367
TagTypeKind
The kind of a tag type.
Definition: Type.h:4692
ObjCTypeParamList * ReadObjCTypeParamList()
Dataflow Directional Tag Classes.
void VisitCXXConversionDecl(CXXConversionDecl *D)
void setDescribedAliasTemplate(TypeAliasTemplateDecl *TAT)
Definition: Decl.h:2960
void setBody(CompoundStmt *B)
Definition: Decl.h:3792
void setImplicitlyInline()
Flag that this function is implicitly inline.
Definition: Decl.h:2272
static CXXConversionDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2278
llvm::BitstreamCursor DeclsCursor
DeclsCursor - This is a cursor to the start of the DECLS_BLOCK block.
Definition: Module.h:393
static ClassScopeFunctionSpecializationDecl * CreateDeserialized(ASTContext &Context, unsigned ID)
static bool isSameTemplateParameterList(const TemplateParameterList *X, const TemplateParameterList *Y)
Determine whether two template parameter lists are similar enough that they may be used in declaratio...
void setHasVolatileMember(bool val)
Definition: Decl.h:3585
void setGetterName(Selector Sel, SourceLocation Loc=SourceLocation())
Definition: DeclObjC.h:926
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1256
static ClassTemplateDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Create an empty class template node.
The base class of all kinds of template declarations (e.g., class, function, etc.).
Definition: DeclTemplate.h:399
void VisitFunctionDecl(FunctionDecl *FD)
Reads an AST files chain containing the contents of a translation unit.
Definition: ASTReader.h:358
Represents a field injected from an anonymous union/struct into the parent scope. ...
Definition: Decl.h:2729
A ClassTemplatePartialSpecializationDecl record.
Definition: ASTBitCodes.h:1385
void setUsingLoc(SourceLocation L)
Set the source location of the &#39;using&#39; keyword.
Definition: DeclCXX.h:3588
DeclCode
Record codes for each kind of declaration.
Definition: ASTBitCodes.h:1211
const Expr * getInit() const
Definition: Decl.h:1214
unsigned IsScoped
True if this tag declaration is a scoped enumeration.
Definition: Decl.h:3003
A decomposition declaration.
Definition: DeclCXX.h:3825
RedeclarableResult VisitCXXRecordDeclImpl(CXXRecordDecl *D)
void setIvarList(ObjCIvarDecl *ivar)
Definition: DeclObjC.h:1507
IdentifierNamespace
IdentifierNamespace - The different namespaces in which declarations may appear.
Definition: DeclBase.h:115
static VarTemplatePartialSpecializationDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Represents a dependent using declaration which was marked with typename.
Definition: DeclCXX.h:3649
A ClassScopeFunctionSpecializationDecl record a class scope function specialization.
Definition: ASTBitCodes.h:1433
DeclarationName - The name of a declaration.
Represents the declaration of an Objective-C type parameter.
Definition: DeclObjC.h:576
Kind getKind() const
Definition: DeclBase.h:419
void VisitObjCMethodDecl(ObjCMethodDecl *D)
void setDependentTemplateSpecialization(ASTContext &Context, const UnresolvedSetImpl &Templates, const TemplateArgumentListInfo &TemplateArgs)
Specifies that this function declaration is actually a dependent function template specialization...
Definition: Decl.cpp:3396
A LinkageSpecDecl record.
Definition: ASTBitCodes.h:1343
RedeclarableResult VisitRecordDeclImpl(RecordDecl *RD)
static NonTypeTemplateParmDecl * CreateDeserialized(ASTContext &C, unsigned ID)
ParmVarDeclBitfields ParmVarDeclBits
Definition: Decl.h:970
static ObjCCategoryDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:1977
void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D)
void VisitObjCImplementationDecl(ObjCImplementationDecl *D)
Represents an enum.
Definition: Decl.h:3261
void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D)
TemplateSpecializationKind
Describes the kind of template specialization that a particular template specialization declaration r...
Definition: Specifiers.h:143
static void forAllLaterRedecls(DeclT *D, Fn F)
void setExternLoc(SourceLocation L)
Definition: DeclCXX.h:2858
static bool inheritDefaultTemplateArgument(ASTContext &Context, ParmDecl *From, Decl *ToD)
Inherit the default template argument from From to To.
Tags, declared with &#39;struct foo;&#39; and referenced with &#39;struct foo&#39;.
Definition: DeclBase.h:125
A type that was preceded by the &#39;template&#39; keyword, stored as a Type*.
ExternalASTSource * getExternalSource() const
Retrieve a pointer to the external AST source associated with this AST context, if any...
Definition: ASTContext.h:1048
static FriendTemplateDecl * CreateDeserialized(ASTContext &C, unsigned ID)
static LabelDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4194
uint32_t DeclID
An ID number that refers to a declaration in an AST file.
Definition: ASTBitCodes.h:69
All of the names in this module are visible.
Definition: Module.h:267
void setLocalExternDecl()
Changes the namespace of this declaration to reflect that it&#39;s a function-local extern declaration...
Definition: DeclBase.h:1034
Capturing variable-length array type.
Definition: Lambda.h:39
A PragmaCommentDecl record.
Definition: ASTBitCodes.h:1451
IdentifierResolver & getIdResolver()
Get the identifier resolver used for name lookup / updates in the translation unit scope...
static ObjCAtDefsFieldDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:1796
ObjCImplementationDecl - Represents a class definition - this is where method definitions are specifi...
Definition: DeclObjC.h:2571
void VisitObjCPropertyDecl(ObjCPropertyDecl *D)
bool isIncompleteArrayType() const
Definition: Type.h:6005
Provides common interface for the Decls that cannot be redeclared, but can be merged if the same decl...
Definition: Redeclarable.h:317
static ExportDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4520
NonParmVarDeclBitfields NonParmVarDeclBits
Definition: Decl.h:971
void UpdateDecl(Decl *D, llvm::SmallVectorImpl< serialization::DeclID > &)
void setInstantiatedFromMemberTemplate(RedeclarableTemplateDecl *TD)
Definition: DeclTemplate.h:929
QualType getCanonicalTypeInternal() const
Definition: Type.h:2113
void setHasNonZeroConstructors(bool val)
Definition: DeclObjC.h:2674
static ClassTemplatePartialSpecializationDecl * CreateDeserialized(ASTContext &C, unsigned ID)
LanguageIDs
Represents the language in a linkage specification.
Definition: DeclCXX.h:2808
uint64_t getGlobalBitOffset(uint32_t LocalOffset)
Get the global offset corresponding to a local offset.
Definition: ASTReader.h:2414
static ImplicitParamDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4230
T * getAttr() const
Definition: DeclBase.h:531
static RecordDecl * CreateDeserialized(const ASTContext &C, unsigned ID)
Definition: Decl.cpp:3941
void setCombiner(Expr *E)
Set combiner expression for the declare reduction construct.
Definition: DeclOpenMP.h:150
static CXXMethodDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:1764
RedeclarableTemplateDecl * getCanonicalDecl() override
Retrieves the canonical declaration of this template.
Definition: DeclTemplate.h:853
static EnumDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: