clang  6.0.0
ASTReaderDecl.cpp
Go to the documentation of this file.
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->IsDefaulted = Record.readInt();
790  FD->IsExplicitlyDefaulted = Record.readInt();
791  FD->HasImplicitReturnZero = Record.readInt();
792  FD->IsConstexpr = Record.readInt();
793  FD->UsesSEHTry = Record.readInt();
794  FD->HasSkippedBody = Record.readInt();
795  FD->IsLateTemplateParsed = Record.readInt();
796  FD->setCachedLinkage(Linkage(Record.readInt()));
797  FD->EndRangeLoc = ReadSourceLocation();
798 
799  FD->ODRHash = Record.readInt();
800  FD->HasODRHash = true;
801 
802  switch ((FunctionDecl::TemplatedKind)Record.readInt()) {
804  mergeRedeclarable(FD, Redecl);
805  break;
807  // Merged when we merge the template.
808  FD->setDescribedFunctionTemplate(ReadDeclAs<FunctionTemplateDecl>());
809  break;
811  FunctionDecl *InstFD = ReadDeclAs<FunctionDecl>();
813  (TemplateSpecializationKind)Record.readInt();
814  SourceLocation POI = ReadSourceLocation();
815  FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK);
817  mergeRedeclarable(FD, Redecl);
818  break;
819  }
821  FunctionTemplateDecl *Template = ReadDeclAs<FunctionTemplateDecl>();
823  (TemplateSpecializationKind)Record.readInt();
824 
825  // Template arguments.
827  Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
828 
829  // Template args as written.
831  SourceLocation LAngleLoc, RAngleLoc;
832  bool HasTemplateArgumentsAsWritten = Record.readInt();
833  if (HasTemplateArgumentsAsWritten) {
834  unsigned NumTemplateArgLocs = Record.readInt();
835  TemplArgLocs.reserve(NumTemplateArgLocs);
836  for (unsigned i=0; i != NumTemplateArgLocs; ++i)
837  TemplArgLocs.push_back(Record.readTemplateArgumentLoc());
838 
839  LAngleLoc = ReadSourceLocation();
840  RAngleLoc = ReadSourceLocation();
841  }
842 
843  SourceLocation POI = ReadSourceLocation();
844 
845  ASTContext &C = Reader.getContext();
846  TemplateArgumentList *TemplArgList
847  = TemplateArgumentList::CreateCopy(C, TemplArgs);
848  TemplateArgumentListInfo TemplArgsInfo(LAngleLoc, RAngleLoc);
849  for (unsigned i=0, e = TemplArgLocs.size(); i != e; ++i)
850  TemplArgsInfo.addArgument(TemplArgLocs[i]);
852  = FunctionTemplateSpecializationInfo::Create(C, FD, Template, TSK,
853  TemplArgList,
854  HasTemplateArgumentsAsWritten ? &TemplArgsInfo
855  : nullptr,
856  POI);
857  FD->TemplateOrSpecialization = FTInfo;
858 
859  if (FD->isCanonicalDecl()) { // if canonical add to template's set.
860  // The template that contains the specializations set. It's not safe to
861  // use getCanonicalDecl on Template since it may still be initializing.
862  FunctionTemplateDecl *CanonTemplate = ReadDeclAs<FunctionTemplateDecl>();
863  // Get the InsertPos by FindNodeOrInsertPos() instead of calling
864  // InsertNode(FTInfo) directly to avoid the getASTContext() call in
865  // FunctionTemplateSpecializationInfo's Profile().
866  // We avoid getASTContext because a decl in the parent hierarchy may
867  // be initializing.
868  llvm::FoldingSetNodeID ID;
870  void *InsertPos = nullptr;
871  FunctionTemplateDecl::Common *CommonPtr = CanonTemplate->getCommonPtr();
872  FunctionTemplateSpecializationInfo *ExistingInfo =
873  CommonPtr->Specializations.FindNodeOrInsertPos(ID, InsertPos);
874  if (InsertPos)
875  CommonPtr->Specializations.InsertNode(FTInfo, InsertPos);
876  else {
877  assert(Reader.getContext().getLangOpts().Modules &&
878  "already deserialized this template specialization");
879  mergeRedeclarable(FD, ExistingInfo->Function, Redecl);
880  }
881  }
882  break;
883  }
885  // Templates.
886  UnresolvedSet<8> TemplDecls;
887  unsigned NumTemplates = Record.readInt();
888  while (NumTemplates--)
889  TemplDecls.addDecl(ReadDeclAs<NamedDecl>());
890 
891  // Templates args.
892  TemplateArgumentListInfo TemplArgs;
893  unsigned NumArgs = Record.readInt();
894  while (NumArgs--)
895  TemplArgs.addArgument(Record.readTemplateArgumentLoc());
896  TemplArgs.setLAngleLoc(ReadSourceLocation());
897  TemplArgs.setRAngleLoc(ReadSourceLocation());
898 
899  FD->setDependentTemplateSpecialization(Reader.getContext(),
900  TemplDecls, TemplArgs);
901  // These are not merged; we don't need to merge redeclarations of dependent
902  // template friends.
903  break;
904  }
905  }
906 
907  // Read in the parameters.
908  unsigned NumParams = Record.readInt();
910  Params.reserve(NumParams);
911  for (unsigned I = 0; I != NumParams; ++I)
912  Params.push_back(ReadDeclAs<ParmVarDecl>());
913  FD->setParams(Reader.getContext(), Params);
914 }
915 
917  VisitNamedDecl(MD);
918  if (Record.readInt()) {
919  // Load the body on-demand. Most clients won't care, because method
920  // definitions rarely show up in headers.
921  Reader.PendingBodies[MD] = GetCurrentCursorOffset();
922  HasPendingBody = true;
923  MD->setSelfDecl(ReadDeclAs<ImplicitParamDecl>());
924  MD->setCmdDecl(ReadDeclAs<ImplicitParamDecl>());
925  }
926  MD->setInstanceMethod(Record.readInt());
927  MD->setVariadic(Record.readInt());
928  MD->setPropertyAccessor(Record.readInt());
929  MD->setDefined(Record.readInt());
930  MD->IsOverriding = Record.readInt();
931  MD->HasSkippedBody = Record.readInt();
932 
933  MD->IsRedeclaration = Record.readInt();
934  MD->HasRedeclaration = Record.readInt();
935  if (MD->HasRedeclaration)
936  Reader.getContext().setObjCMethodRedeclaration(MD,
937  ReadDeclAs<ObjCMethodDecl>());
938 
940  MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record.readInt());
941  MD->SetRelatedResultType(Record.readInt());
942  MD->setReturnType(Record.readType());
943  MD->setReturnTypeSourceInfo(GetTypeSourceInfo());
944  MD->DeclEndLoc = ReadSourceLocation();
945  unsigned NumParams = Record.readInt();
947  Params.reserve(NumParams);
948  for (unsigned I = 0; I != NumParams; ++I)
949  Params.push_back(ReadDeclAs<ParmVarDecl>());
950 
951  MD->SelLocsKind = Record.readInt();
952  unsigned NumStoredSelLocs = Record.readInt();
954  SelLocs.reserve(NumStoredSelLocs);
955  for (unsigned i = 0; i != NumStoredSelLocs; ++i)
956  SelLocs.push_back(ReadSourceLocation());
957 
958  MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs);
959 }
960 
962  VisitTypedefNameDecl(D);
963 
964  D->Variance = Record.readInt();
965  D->Index = Record.readInt();
966  D->VarianceLoc = ReadSourceLocation();
967  D->ColonLoc = ReadSourceLocation();
968 }
969 
971  VisitNamedDecl(CD);
972  CD->setAtStartLoc(ReadSourceLocation());
973  CD->setAtEndRange(ReadSourceRange());
974 }
975 
977  unsigned numParams = Record.readInt();
978  if (numParams == 0)
979  return nullptr;
980 
982  typeParams.reserve(numParams);
983  for (unsigned i = 0; i != numParams; ++i) {
984  auto typeParam = ReadDeclAs<ObjCTypeParamDecl>();
985  if (!typeParam)
986  return nullptr;
987 
988  typeParams.push_back(typeParam);
989  }
990 
991  SourceLocation lAngleLoc = ReadSourceLocation();
992  SourceLocation rAngleLoc = ReadSourceLocation();
993 
994  return ObjCTypeParamList::create(Reader.getContext(), lAngleLoc,
995  typeParams, rAngleLoc);
996 }
997 
998 void ASTDeclReader::ReadObjCDefinitionData(
999  struct ObjCInterfaceDecl::DefinitionData &Data) {
1000  // Read the superclass.
1001  Data.SuperClassTInfo = GetTypeSourceInfo();
1002 
1003  Data.EndLoc = ReadSourceLocation();
1004  Data.HasDesignatedInitializers = Record.readInt();
1005 
1006  // Read the directly referenced protocols and their SourceLocations.
1007  unsigned NumProtocols = Record.readInt();
1009  Protocols.reserve(NumProtocols);
1010  for (unsigned I = 0; I != NumProtocols; ++I)
1011  Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>());
1013  ProtoLocs.reserve(NumProtocols);
1014  for (unsigned I = 0; I != NumProtocols; ++I)
1015  ProtoLocs.push_back(ReadSourceLocation());
1016  Data.ReferencedProtocols.set(Protocols.data(), NumProtocols, ProtoLocs.data(),
1017  Reader.getContext());
1018 
1019  // Read the transitive closure of protocols referenced by this class.
1020  NumProtocols = Record.readInt();
1021  Protocols.clear();
1022  Protocols.reserve(NumProtocols);
1023  for (unsigned I = 0; I != NumProtocols; ++I)
1024  Protocols.push_back(ReadDeclAs<ObjCProtocolDecl>());
1025  Data.AllReferencedProtocols.set(Protocols.data(), NumProtocols,
1026  Reader.getContext());
1027 }
1028 
1029 void ASTDeclReader::MergeDefinitionData(ObjCInterfaceDecl *D,
1030  struct ObjCInterfaceDecl::DefinitionData &&NewDD) {
1031  // FIXME: odr checking?
1032 }
1033 
1035  RedeclarableResult Redecl = VisitRedeclarable(ID);
1036  VisitObjCContainerDecl(ID);
1037  TypeIDForTypeDecl = Record.getGlobalTypeID(Record.readInt());
1038  mergeRedeclarable(ID, Redecl);
1039 
1040  ID->TypeParamList = ReadObjCTypeParamList();
1041  if (Record.readInt()) {
1042  // Read the definition.
1043  ID->allocateDefinitionData();
1044 
1045  ReadObjCDefinitionData(ID->data());
1046  ObjCInterfaceDecl *Canon = ID->getCanonicalDecl();
1047  if (Canon->Data.getPointer()) {
1048  // If we already have a definition, keep the definition invariant and
1049  // merge the data.
1050  MergeDefinitionData(Canon, std::move(ID->data()));
1051  ID->Data = Canon->Data;
1052  } else {
1053  // Set the definition data of the canonical declaration, so other
1054  // redeclarations will see it.
1055  ID->getCanonicalDecl()->Data = ID->Data;
1056 
1057  // We will rebuild this list lazily.
1058  ID->setIvarList(nullptr);
1059  }
1060 
1061  // Note that we have deserialized a definition.
1062  Reader.PendingDefinitions.insert(ID);
1063 
1064  // Note that we've loaded this Objective-C class.
1065  Reader.ObjCClassesLoaded.push_back(ID);
1066  } else {
1067  ID->Data = ID->getCanonicalDecl()->Data;
1068  }
1069 }
1070 
1072  VisitFieldDecl(IVD);
1073  IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record.readInt());
1074  // This field will be built lazily.
1075  IVD->setNextIvar(nullptr);
1076  bool synth = Record.readInt();
1077  IVD->setSynthesize(synth);
1078 }
1079 
1080 void ASTDeclReader::ReadObjCDefinitionData(
1081  struct ObjCProtocolDecl::DefinitionData &Data) {
1082 
1083  unsigned NumProtoRefs = Record.readInt();
1085  ProtoRefs.reserve(NumProtoRefs);
1086  for (unsigned I = 0; I != NumProtoRefs; ++I)
1087  ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>());
1089  ProtoLocs.reserve(NumProtoRefs);
1090  for (unsigned I = 0; I != NumProtoRefs; ++I)
1091  ProtoLocs.push_back(ReadSourceLocation());
1092  Data.ReferencedProtocols.set(ProtoRefs.data(), NumProtoRefs,
1093  ProtoLocs.data(), Reader.getContext());
1094 }
1095 
1096 void ASTDeclReader::MergeDefinitionData(ObjCProtocolDecl *D,
1097  struct ObjCProtocolDecl::DefinitionData &&NewDD) {
1098  // FIXME: odr checking?
1099 }
1100 
1102  RedeclarableResult Redecl = VisitRedeclarable(PD);
1103  VisitObjCContainerDecl(PD);
1104  mergeRedeclarable(PD, Redecl);
1105 
1106  if (Record.readInt()) {
1107  // Read the definition.
1108  PD->allocateDefinitionData();
1109 
1110  ReadObjCDefinitionData(PD->data());
1111 
1112  ObjCProtocolDecl *Canon = PD->getCanonicalDecl();
1113  if (Canon->Data.getPointer()) {
1114  // If we already have a definition, keep the definition invariant and
1115  // merge the data.
1116  MergeDefinitionData(Canon, std::move(PD->data()));
1117  PD->Data = Canon->Data;
1118  } else {
1119  // Set the definition data of the canonical declaration, so other
1120  // redeclarations will see it.
1121  PD->getCanonicalDecl()->Data = PD->Data;
1122  }
1123  // Note that we have deserialized a definition.
1124  Reader.PendingDefinitions.insert(PD);
1125  } else {
1126  PD->Data = PD->getCanonicalDecl()->Data;
1127  }
1128 }
1129 
1131  VisitFieldDecl(FD);
1132 }
1133 
1135  VisitObjCContainerDecl(CD);
1136  CD->setCategoryNameLoc(ReadSourceLocation());
1137  CD->setIvarLBraceLoc(ReadSourceLocation());
1138  CD->setIvarRBraceLoc(ReadSourceLocation());
1139 
1140  // Note that this category has been deserialized. We do this before
1141  // deserializing the interface declaration, so that it will consider this
1142  /// category.
1143  Reader.CategoriesDeserialized.insert(CD);
1144 
1145  CD->ClassInterface = ReadDeclAs<ObjCInterfaceDecl>();
1146  CD->TypeParamList = ReadObjCTypeParamList();
1147  unsigned NumProtoRefs = Record.readInt();
1149  ProtoRefs.reserve(NumProtoRefs);
1150  for (unsigned I = 0; I != NumProtoRefs; ++I)
1151  ProtoRefs.push_back(ReadDeclAs<ObjCProtocolDecl>());
1153  ProtoLocs.reserve(NumProtoRefs);
1154  for (unsigned I = 0; I != NumProtoRefs; ++I)
1155  ProtoLocs.push_back(ReadSourceLocation());
1156  CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
1157  Reader.getContext());
1158 }
1159 
1161  VisitNamedDecl(CAD);
1162  CAD->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>());
1163 }
1164 
1166  VisitNamedDecl(D);
1167  D->setAtLoc(ReadSourceLocation());
1168  D->setLParenLoc(ReadSourceLocation());
1169  QualType T = Record.readType();
1170  TypeSourceInfo *TSI = GetTypeSourceInfo();
1171  D->setType(T, TSI);
1173  (ObjCPropertyDecl::PropertyAttributeKind)Record.readInt());
1175  (ObjCPropertyDecl::PropertyAttributeKind)Record.readInt());
1177  (ObjCPropertyDecl::PropertyControl)Record.readInt());
1178  DeclarationName GetterName = Record.readDeclarationName();
1179  SourceLocation GetterLoc = ReadSourceLocation();
1180  D->setGetterName(GetterName.getObjCSelector(), GetterLoc);
1181  DeclarationName SetterName = Record.readDeclarationName();
1182  SourceLocation SetterLoc = ReadSourceLocation();
1183  D->setSetterName(SetterName.getObjCSelector(), SetterLoc);
1184  D->setGetterMethodDecl(ReadDeclAs<ObjCMethodDecl>());
1185  D->setSetterMethodDecl(ReadDeclAs<ObjCMethodDecl>());
1186  D->setPropertyIvarDecl(ReadDeclAs<ObjCIvarDecl>());
1187 }
1188 
1190  VisitObjCContainerDecl(D);
1191  D->setClassInterface(ReadDeclAs<ObjCInterfaceDecl>());
1192 }
1193 
1195  VisitObjCImplDecl(D);
1196  D->CategoryNameLoc = ReadSourceLocation();
1197 }
1198 
1200  VisitObjCImplDecl(D);
1201  D->setSuperClass(ReadDeclAs<ObjCInterfaceDecl>());
1202  D->SuperLoc = ReadSourceLocation();
1203  D->setIvarLBraceLoc(ReadSourceLocation());
1204  D->setIvarRBraceLoc(ReadSourceLocation());
1205  D->setHasNonZeroConstructors(Record.readInt());
1206  D->setHasDestructors(Record.readInt());
1207  D->NumIvarInitializers = Record.readInt();
1208  if (D->NumIvarInitializers)
1209  D->IvarInitializers = ReadGlobalOffset();
1210 }
1211 
1213  VisitDecl(D);
1214  D->setAtLoc(ReadSourceLocation());
1215  D->setPropertyDecl(ReadDeclAs<ObjCPropertyDecl>());
1216  D->PropertyIvarDecl = ReadDeclAs<ObjCIvarDecl>();
1217  D->IvarLoc = ReadSourceLocation();
1218  D->setGetterCXXConstructor(Record.readExpr());
1219  D->setSetterCXXAssignment(Record.readExpr());
1220 }
1221 
1223  VisitDeclaratorDecl(FD);
1224  FD->Mutable = Record.readInt();
1225 
1226  if (auto ISK = static_cast<FieldDecl::InitStorageKind>(Record.readInt())) {
1227  FD->InitStorage.setInt(ISK);
1228  FD->InitStorage.setPointer(ISK == FieldDecl::ISK_CapturedVLAType
1229  ? Record.readType().getAsOpaquePtr()
1230  : Record.readExpr());
1231  }
1232 
1233  if (auto *BW = Record.readExpr())
1234  FD->setBitWidth(BW);
1235 
1236  if (!FD->getDeclName()) {
1237  if (FieldDecl *Tmpl = ReadDeclAs<FieldDecl>())
1238  Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
1239  }
1240  mergeMergeable(FD);
1241 }
1242 
1244  VisitDeclaratorDecl(PD);
1245  PD->GetterId = Record.getIdentifierInfo();
1246  PD->SetterId = Record.getIdentifierInfo();
1247 }
1248 
1250  VisitValueDecl(FD);
1251 
1252  FD->ChainingSize = Record.readInt();
1253  assert(FD->ChainingSize >= 2 && "Anonymous chaining must be >= 2");
1254  FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize];
1255 
1256  for (unsigned I = 0; I != FD->ChainingSize; ++I)
1257  FD->Chaining[I] = ReadDeclAs<NamedDecl>();
1258 
1259  mergeMergeable(FD);
1260 }
1261 
1262 ASTDeclReader::RedeclarableResult ASTDeclReader::VisitVarDeclImpl(VarDecl *VD) {
1263  RedeclarableResult Redecl = VisitRedeclarable(VD);
1264  VisitDeclaratorDecl(VD);
1265 
1266  VD->VarDeclBits.SClass = (StorageClass)Record.readInt();
1267  VD->VarDeclBits.TSCSpec = Record.readInt();
1268  VD->VarDeclBits.InitStyle = Record.readInt();
1269  if (!isa<ParmVarDecl>(VD)) {
1270  VD->NonParmVarDeclBits.IsThisDeclarationADemotedDefinition =
1271  Record.readInt();
1272  VD->NonParmVarDeclBits.ExceptionVar = Record.readInt();
1273  VD->NonParmVarDeclBits.NRVOVariable = Record.readInt();
1274  VD->NonParmVarDeclBits.CXXForRangeDecl = Record.readInt();
1275  VD->NonParmVarDeclBits.ARCPseudoStrong = Record.readInt();
1276  VD->NonParmVarDeclBits.IsInline = Record.readInt();
1277  VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
1278  VD->NonParmVarDeclBits.IsConstexpr = Record.readInt();
1279  VD->NonParmVarDeclBits.IsInitCapture = Record.readInt();
1280  VD->NonParmVarDeclBits.PreviousDeclInSameBlockScope = Record.readInt();
1281  VD->NonParmVarDeclBits.ImplicitParamKind = Record.readInt();
1282  }
1283  Linkage VarLinkage = Linkage(Record.readInt());
1284  VD->setCachedLinkage(VarLinkage);
1285 
1286  // Reconstruct the one piece of the IdentifierNamespace that we need.
1287  if (VD->getStorageClass() == SC_Extern && VarLinkage != NoLinkage &&
1289  VD->setLocalExternDecl();
1290 
1291  if (uint64_t Val = Record.readInt()) {
1292  VD->setInit(Record.readExpr());
1293  if (Val > 1) { // IsInitKnownICE = 1, IsInitNotICE = 2, IsInitICE = 3
1294  EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
1295  Eval->CheckedICE = true;
1296  Eval->IsICE = Val == 3;
1297  }
1298  }
1299 
1300  if (VD->getStorageDuration() == SD_Static && Record.readInt())
1301  Reader.DefinitionSource[VD] = Loc.F->Kind == ModuleKind::MK_MainFile;
1302 
1303  enum VarKind {
1304  VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
1305  };
1306  switch ((VarKind)Record.readInt()) {
1307  case VarNotTemplate:
1308  // Only true variables (not parameters or implicit parameters) can be
1309  // merged; the other kinds are not really redeclarable at all.
1310  if (!isa<ParmVarDecl>(VD) && !isa<ImplicitParamDecl>(VD) &&
1311  !isa<VarTemplateSpecializationDecl>(VD))
1312  mergeRedeclarable(VD, Redecl);
1313  break;
1314  case VarTemplate:
1315  // Merged when we merge the template.
1316  VD->setDescribedVarTemplate(ReadDeclAs<VarTemplateDecl>());
1317  break;
1318  case StaticDataMemberSpecialization: { // HasMemberSpecializationInfo.
1319  VarDecl *Tmpl = ReadDeclAs<VarDecl>();
1321  (TemplateSpecializationKind)Record.readInt();
1322  SourceLocation POI = ReadSourceLocation();
1323  Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
1324  mergeRedeclarable(VD, Redecl);
1325  break;
1326  }
1327  }
1328 
1329  return Redecl;
1330 }
1331 
1333  VisitVarDecl(PD);
1334 }
1335 
1337  VisitVarDecl(PD);
1338  unsigned isObjCMethodParam = Record.readInt();
1339  unsigned scopeDepth = Record.readInt();
1340  unsigned scopeIndex = Record.readInt();
1341  unsigned declQualifier = Record.readInt();
1342  if (isObjCMethodParam) {
1343  assert(scopeDepth == 0);
1344  PD->setObjCMethodScopeInfo(scopeIndex);
1345  PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier;
1346  } else {
1347  PD->setScopeInfo(scopeDepth, scopeIndex);
1348  }
1349  PD->ParmVarDeclBits.IsKNRPromoted = Record.readInt();
1350  PD->ParmVarDeclBits.HasInheritedDefaultArg = Record.readInt();
1351  if (Record.readInt()) // hasUninstantiatedDefaultArg.
1352  PD->setUninstantiatedDefaultArg(Record.readExpr());
1353 
1354  // FIXME: If this is a redeclaration of a function from another module, handle
1355  // inheritance of default arguments.
1356 }
1357 
1359  VisitVarDecl(DD);
1360  BindingDecl **BDs = DD->getTrailingObjects<BindingDecl*>();
1361  for (unsigned I = 0; I != DD->NumBindings; ++I)
1362  BDs[I] = ReadDeclAs<BindingDecl>();
1363 }
1364 
1366  VisitValueDecl(BD);
1367  BD->Binding = Record.readExpr();
1368 }
1369 
1371  VisitDecl(AD);
1372  AD->setAsmString(cast<StringLiteral>(Record.readExpr()));
1373  AD->setRParenLoc(ReadSourceLocation());
1374 }
1375 
1377  VisitDecl(BD);
1378  BD->setBody(cast_or_null<CompoundStmt>(Record.readStmt()));
1379  BD->setSignatureAsWritten(GetTypeSourceInfo());
1380  unsigned NumParams = Record.readInt();
1382  Params.reserve(NumParams);
1383  for (unsigned I = 0; I != NumParams; ++I)
1384  Params.push_back(ReadDeclAs<ParmVarDecl>());
1385  BD->setParams(Params);
1386 
1387  BD->setIsVariadic(Record.readInt());
1388  BD->setBlockMissingReturnType(Record.readInt());
1389  BD->setIsConversionFromLambda(Record.readInt());
1390 
1391  bool capturesCXXThis = Record.readInt();
1392  unsigned numCaptures = Record.readInt();
1394  captures.reserve(numCaptures);
1395  for (unsigned i = 0; i != numCaptures; ++i) {
1396  VarDecl *decl = ReadDeclAs<VarDecl>();
1397  unsigned flags = Record.readInt();
1398  bool byRef = (flags & 1);
1399  bool nested = (flags & 2);
1400  Expr *copyExpr = ((flags & 4) ? Record.readExpr() : nullptr);
1401 
1402  captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr));
1403  }
1404  BD->setCaptures(Reader.getContext(), captures, capturesCXXThis);
1405 }
1406 
1408  VisitDecl(CD);
1409  unsigned ContextParamPos = Record.readInt();
1410  CD->setNothrow(Record.readInt() != 0);
1411  // Body is set by VisitCapturedStmt.
1412  for (unsigned I = 0; I < CD->NumParams; ++I) {
1413  if (I != ContextParamPos)
1414  CD->setParam(I, ReadDeclAs<ImplicitParamDecl>());
1415  else
1416  CD->setContextParam(I, ReadDeclAs<ImplicitParamDecl>());
1417  }
1418 }
1419 
1421  VisitDecl(D);
1422  D->setLanguage((LinkageSpecDecl::LanguageIDs)Record.readInt());
1423  D->setExternLoc(ReadSourceLocation());
1424  D->setRBraceLoc(ReadSourceLocation());
1425 }
1426 
1428  VisitDecl(D);
1429  D->RBraceLoc = ReadSourceLocation();
1430 }
1431 
1433  VisitNamedDecl(D);
1434  D->setLocStart(ReadSourceLocation());
1435 }
1436 
1438  RedeclarableResult Redecl = VisitRedeclarable(D);
1439  VisitNamedDecl(D);
1440  D->setInline(Record.readInt());
1441  D->LocStart = ReadSourceLocation();
1442  D->RBraceLoc = ReadSourceLocation();
1443 
1444  // Defer loading the anonymous namespace until we've finished merging
1445  // this namespace; loading it might load a later declaration of the
1446  // same namespace, and we have an invariant that older declarations
1447  // get merged before newer ones try to merge.
1448  GlobalDeclID AnonNamespace = 0;
1449  if (Redecl.getFirstID() == ThisDeclID) {
1450  AnonNamespace = ReadDeclID();
1451  } else {
1452  // Link this namespace back to the first declaration, which has already
1453  // been deserialized.
1454  D->AnonOrFirstNamespaceAndInline.setPointer(D->getFirstDecl());
1455  }
1456 
1457  mergeRedeclarable(D, Redecl);
1458 
1459  if (AnonNamespace) {
1460  // Each module has its own anonymous namespace, which is disjoint from
1461  // any other module's anonymous namespaces, so don't attach the anonymous
1462  // namespace at all.
1463  NamespaceDecl *Anon = cast<NamespaceDecl>(Reader.GetDecl(AnonNamespace));
1464  if (!Record.isModule())
1465  D->setAnonymousNamespace(Anon);
1466  }
1467 }
1468 
1470  RedeclarableResult Redecl = VisitRedeclarable(D);
1471  VisitNamedDecl(D);
1472  D->NamespaceLoc = ReadSourceLocation();
1473  D->IdentLoc = ReadSourceLocation();
1474  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1475  D->Namespace = ReadDeclAs<NamedDecl>();
1476  mergeRedeclarable(D, Redecl);
1477 }
1478 
1480  VisitNamedDecl(D);
1481  D->setUsingLoc(ReadSourceLocation());
1482  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1483  ReadDeclarationNameLoc(D->DNLoc, D->getDeclName());
1484  D->FirstUsingShadow.setPointer(ReadDeclAs<UsingShadowDecl>());
1485  D->setTypename(Record.readInt());
1486  if (NamedDecl *Pattern = ReadDeclAs<NamedDecl>())
1487  Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
1488  mergeMergeable(D);
1489 }
1490 
1492  VisitNamedDecl(D);
1493  D->InstantiatedFrom = ReadDeclAs<NamedDecl>();
1494  NamedDecl **Expansions = D->getTrailingObjects<NamedDecl*>();
1495  for (unsigned I = 0; I != D->NumExpansions; ++I)
1496  Expansions[I] = ReadDeclAs<NamedDecl>();
1497  mergeMergeable(D);
1498 }
1499 
1501  RedeclarableResult Redecl = VisitRedeclarable(D);
1502  VisitNamedDecl(D);
1503  D->setTargetDecl(ReadDeclAs<NamedDecl>());
1504  D->UsingOrNextShadow = ReadDeclAs<NamedDecl>();
1505  UsingShadowDecl *Pattern = ReadDeclAs<UsingShadowDecl>();
1506  if (Pattern)
1507  Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
1508  mergeRedeclarable(D, Redecl);
1509 }
1510 
1513  VisitUsingShadowDecl(D);
1514  D->NominatedBaseClassShadowDecl = ReadDeclAs<ConstructorUsingShadowDecl>();
1515  D->ConstructedBaseClassShadowDecl = ReadDeclAs<ConstructorUsingShadowDecl>();
1516  D->IsVirtual = Record.readInt();
1517 }
1518 
1520  VisitNamedDecl(D);
1521  D->UsingLoc = ReadSourceLocation();
1522  D->NamespaceLoc = ReadSourceLocation();
1523  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1524  D->NominatedNamespace = ReadDeclAs<NamedDecl>();
1525  D->CommonAncestor = ReadDeclAs<DeclContext>();
1526 }
1527 
1529  VisitValueDecl(D);
1530  D->setUsingLoc(ReadSourceLocation());
1531  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1532  ReadDeclarationNameLoc(D->DNLoc, D->getDeclName());
1533  D->EllipsisLoc = ReadSourceLocation();
1534  mergeMergeable(D);
1535 }
1536 
1539  VisitTypeDecl(D);
1540  D->TypenameLocation = ReadSourceLocation();
1541  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1542  D->EllipsisLoc = ReadSourceLocation();
1543  mergeMergeable(D);
1544 }
1545 
1546 void ASTDeclReader::ReadCXXDefinitionData(
1547  struct CXXRecordDecl::DefinitionData &Data, const CXXRecordDecl *D) {
1548  // Note: the caller has deserialized the IsLambda bit already.
1549  Data.UserDeclaredConstructor = Record.readInt();
1550  Data.UserDeclaredSpecialMembers = Record.readInt();
1551  Data.Aggregate = Record.readInt();
1552  Data.PlainOldData = Record.readInt();
1553  Data.Empty = Record.readInt();
1554  Data.Polymorphic = Record.readInt();
1555  Data.Abstract = Record.readInt();
1556  Data.IsStandardLayout = Record.readInt();
1557  Data.HasNoNonEmptyBases = Record.readInt();
1558  Data.HasPrivateFields = Record.readInt();
1559  Data.HasProtectedFields = Record.readInt();
1560  Data.HasPublicFields = Record.readInt();
1561  Data.HasMutableFields = Record.readInt();
1562  Data.HasVariantMembers = Record.readInt();
1563  Data.HasOnlyCMembers = Record.readInt();
1564  Data.HasInClassInitializer = Record.readInt();
1565  Data.HasUninitializedReferenceMember = Record.readInt();
1566  Data.HasUninitializedFields = Record.readInt();
1567  Data.HasInheritedConstructor = Record.readInt();
1568  Data.HasInheritedAssignment = Record.readInt();
1569  Data.NeedOverloadResolutionForCopyConstructor = Record.readInt();
1570  Data.NeedOverloadResolutionForMoveConstructor = Record.readInt();
1571  Data.NeedOverloadResolutionForMoveAssignment = Record.readInt();
1572  Data.NeedOverloadResolutionForDestructor = Record.readInt();
1573  Data.DefaultedCopyConstructorIsDeleted = Record.readInt();
1574  Data.DefaultedMoveConstructorIsDeleted = Record.readInt();
1575  Data.DefaultedMoveAssignmentIsDeleted = Record.readInt();
1576  Data.DefaultedDestructorIsDeleted = Record.readInt();
1577  Data.HasTrivialSpecialMembers = Record.readInt();
1578  Data.DeclaredNonTrivialSpecialMembers = Record.readInt();
1579  Data.HasIrrelevantDestructor = Record.readInt();
1580  Data.HasConstexprNonCopyMoveConstructor = Record.readInt();
1581  Data.HasDefaultedDefaultConstructor = Record.readInt();
1582  Data.CanPassInRegisters = Record.readInt();
1583  Data.DefaultedDefaultConstructorIsConstexpr = Record.readInt();
1584  Data.HasConstexprDefaultConstructor = Record.readInt();
1585  Data.HasNonLiteralTypeFieldsOrBases = Record.readInt();
1586  Data.ComputedVisibleConversions = Record.readInt();
1587  Data.UserProvidedDefaultConstructor = Record.readInt();
1588  Data.DeclaredSpecialMembers = Record.readInt();
1589  Data.ImplicitCopyConstructorCanHaveConstParamForVBase = Record.readInt();
1590  Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase = Record.readInt();
1591  Data.ImplicitCopyAssignmentHasConstParam = Record.readInt();
1592  Data.HasDeclaredCopyConstructorWithConstParam = Record.readInt();
1593  Data.HasDeclaredCopyAssignmentWithConstParam = Record.readInt();
1594  Data.ODRHash = Record.readInt();
1595  Data.HasODRHash = true;
1596 
1597  if (Record.readInt())
1598  Reader.DefinitionSource[D] = Loc.F->Kind == ModuleKind::MK_MainFile;
1599 
1600  Data.NumBases = Record.readInt();
1601  if (Data.NumBases)
1602  Data.Bases = ReadGlobalOffset();
1603  Data.NumVBases = Record.readInt();
1604  if (Data.NumVBases)
1605  Data.VBases = ReadGlobalOffset();
1606 
1607  Record.readUnresolvedSet(Data.Conversions);
1608  Record.readUnresolvedSet(Data.VisibleConversions);
1609  assert(Data.Definition && "Data.Definition should be already set!");
1610  Data.FirstFriend = ReadDeclID();
1611 
1612  if (Data.IsLambda) {
1613  typedef LambdaCapture Capture;
1614  CXXRecordDecl::LambdaDefinitionData &Lambda
1615  = static_cast<CXXRecordDecl::LambdaDefinitionData &>(Data);
1616  Lambda.Dependent = Record.readInt();
1617  Lambda.IsGenericLambda = Record.readInt();
1618  Lambda.CaptureDefault = Record.readInt();
1619  Lambda.NumCaptures = Record.readInt();
1620  Lambda.NumExplicitCaptures = Record.readInt();
1621  Lambda.ManglingNumber = Record.readInt();
1622  Lambda.ContextDecl = ReadDeclID();
1623  Lambda.Captures = (Capture *)Reader.getContext().Allocate(
1624  sizeof(Capture) * Lambda.NumCaptures);
1625  Capture *ToCapture = Lambda.Captures;
1626  Lambda.MethodTyInfo = GetTypeSourceInfo();
1627  for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
1628  SourceLocation Loc = ReadSourceLocation();
1629  bool IsImplicit = Record.readInt();
1630  LambdaCaptureKind Kind = static_cast<LambdaCaptureKind>(Record.readInt());
1631  switch (Kind) {
1632  case LCK_StarThis:
1633  case LCK_This:
1634  case LCK_VLAType:
1635  *ToCapture++ = Capture(Loc, IsImplicit, Kind, nullptr,SourceLocation());
1636  break;
1637  case LCK_ByCopy:
1638  case LCK_ByRef:
1639  VarDecl *Var = ReadDeclAs<VarDecl>();
1640  SourceLocation EllipsisLoc = ReadSourceLocation();
1641  *ToCapture++ = Capture(Loc, IsImplicit, Kind, Var, EllipsisLoc);
1642  break;
1643  }
1644  }
1645  }
1646 }
1647 
1648 void ASTDeclReader::MergeDefinitionData(
1649  CXXRecordDecl *D, struct CXXRecordDecl::DefinitionData &&MergeDD) {
1650  assert(D->DefinitionData &&
1651  "merging class definition into non-definition");
1652  auto &DD = *D->DefinitionData;
1653 
1654  if (DD.Definition != MergeDD.Definition) {
1655  // Track that we merged the definitions.
1656  Reader.MergedDeclContexts.insert(std::make_pair(MergeDD.Definition,
1657  DD.Definition));
1658  Reader.PendingDefinitions.erase(MergeDD.Definition);
1659  MergeDD.Definition->IsCompleteDefinition = false;
1660  Reader.mergeDefinitionVisibility(DD.Definition, MergeDD.Definition);
1661  assert(Reader.Lookups.find(MergeDD.Definition) == Reader.Lookups.end() &&
1662  "already loaded pending lookups for merged definition");
1663  }
1664 
1665  auto PFDI = Reader.PendingFakeDefinitionData.find(&DD);
1666  if (PFDI != Reader.PendingFakeDefinitionData.end() &&
1667  PFDI->second == ASTReader::PendingFakeDefinitionKind::Fake) {
1668  // We faked up this definition data because we found a class for which we'd
1669  // not yet loaded the definition. Replace it with the real thing now.
1670  assert(!DD.IsLambda && !MergeDD.IsLambda && "faked up lambda definition?");
1671  PFDI->second = ASTReader::PendingFakeDefinitionKind::FakeLoaded;
1672 
1673  // Don't change which declaration is the definition; that is required
1674  // to be invariant once we select it.
1675  auto *Def = DD.Definition;
1676  DD = std::move(MergeDD);
1677  DD.Definition = Def;
1678  return;
1679  }
1680 
1681  // FIXME: Move this out into a .def file?
1682  bool DetectedOdrViolation = false;
1683 #define OR_FIELD(Field) DD.Field |= MergeDD.Field;
1684 #define MATCH_FIELD(Field) \
1685  DetectedOdrViolation |= DD.Field != MergeDD.Field; \
1686  OR_FIELD(Field)
1687  MATCH_FIELD(UserDeclaredConstructor)
1688  MATCH_FIELD(UserDeclaredSpecialMembers)
1689  MATCH_FIELD(Aggregate)
1690  MATCH_FIELD(PlainOldData)
1691  MATCH_FIELD(Empty)
1692  MATCH_FIELD(Polymorphic)
1693  MATCH_FIELD(Abstract)
1694  MATCH_FIELD(IsStandardLayout)
1695  MATCH_FIELD(HasNoNonEmptyBases)
1696  MATCH_FIELD(HasPrivateFields)
1697  MATCH_FIELD(HasProtectedFields)
1698  MATCH_FIELD(HasPublicFields)
1699  MATCH_FIELD(HasMutableFields)
1700  MATCH_FIELD(HasVariantMembers)
1701  MATCH_FIELD(HasOnlyCMembers)
1702  MATCH_FIELD(HasInClassInitializer)
1703  MATCH_FIELD(HasUninitializedReferenceMember)
1704  MATCH_FIELD(HasUninitializedFields)
1705  MATCH_FIELD(HasInheritedConstructor)
1706  MATCH_FIELD(HasInheritedAssignment)
1707  MATCH_FIELD(NeedOverloadResolutionForCopyConstructor)
1708  MATCH_FIELD(NeedOverloadResolutionForMoveConstructor)
1709  MATCH_FIELD(NeedOverloadResolutionForMoveAssignment)
1710  MATCH_FIELD(NeedOverloadResolutionForDestructor)
1711  MATCH_FIELD(DefaultedCopyConstructorIsDeleted)
1712  MATCH_FIELD(DefaultedMoveConstructorIsDeleted)
1713  MATCH_FIELD(DefaultedMoveAssignmentIsDeleted)
1714  MATCH_FIELD(DefaultedDestructorIsDeleted)
1715  OR_FIELD(HasTrivialSpecialMembers)
1716  OR_FIELD(DeclaredNonTrivialSpecialMembers)
1717  MATCH_FIELD(HasIrrelevantDestructor)
1718  OR_FIELD(HasConstexprNonCopyMoveConstructor)
1719  OR_FIELD(HasDefaultedDefaultConstructor)
1720  MATCH_FIELD(CanPassInRegisters)
1721  MATCH_FIELD(DefaultedDefaultConstructorIsConstexpr)
1722  OR_FIELD(HasConstexprDefaultConstructor)
1723  MATCH_FIELD(HasNonLiteralTypeFieldsOrBases)
1724  // ComputedVisibleConversions is handled below.
1725  MATCH_FIELD(UserProvidedDefaultConstructor)
1726  OR_FIELD(DeclaredSpecialMembers)
1727  MATCH_FIELD(ImplicitCopyConstructorCanHaveConstParamForVBase)
1728  MATCH_FIELD(ImplicitCopyConstructorCanHaveConstParamForNonVBase)
1729  MATCH_FIELD(ImplicitCopyAssignmentHasConstParam)
1730  OR_FIELD(HasDeclaredCopyConstructorWithConstParam)
1731  OR_FIELD(HasDeclaredCopyAssignmentWithConstParam)
1732  MATCH_FIELD(IsLambda)
1733 #undef OR_FIELD
1734 #undef MATCH_FIELD
1735 
1736  if (DD.NumBases != MergeDD.NumBases || DD.NumVBases != MergeDD.NumVBases)
1737  DetectedOdrViolation = true;
1738  // FIXME: Issue a diagnostic if the base classes don't match when we come
1739  // to lazily load them.
1740 
1741  // FIXME: Issue a diagnostic if the list of conversion functions doesn't
1742  // match when we come to lazily load them.
1743  if (MergeDD.ComputedVisibleConversions && !DD.ComputedVisibleConversions) {
1744  DD.VisibleConversions = std::move(MergeDD.VisibleConversions);
1745  DD.ComputedVisibleConversions = true;
1746  }
1747 
1748  // FIXME: Issue a diagnostic if FirstFriend doesn't match when we come to
1749  // lazily load it.
1750 
1751  if (DD.IsLambda) {
1752  // FIXME: ODR-checking for merging lambdas (this happens, for instance,
1753  // when they occur within the body of a function template specialization).
1754  }
1755 
1756  if (D->getODRHash() != MergeDD.ODRHash) {
1757  DetectedOdrViolation = true;
1758  }
1759 
1760  if (DetectedOdrViolation)
1761  Reader.PendingOdrMergeFailures[DD.Definition].push_back(
1762  {MergeDD.Definition, &MergeDD});
1763 }
1764 
1765 void ASTDeclReader::ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update) {
1766  struct CXXRecordDecl::DefinitionData *DD;
1767  ASTContext &C = Reader.getContext();
1768 
1769  // Determine whether this is a lambda closure type, so that we can
1770  // allocate the appropriate DefinitionData structure.
1771  bool IsLambda = Record.readInt();
1772  if (IsLambda)
1773  DD = new (C) CXXRecordDecl::LambdaDefinitionData(D, nullptr, false, false,
1774  LCD_None);
1775  else
1776  DD = new (C) struct CXXRecordDecl::DefinitionData(D);
1777 
1778  ReadCXXDefinitionData(*DD, D);
1779 
1780  // We might already have a definition for this record. This can happen either
1781  // because we're reading an update record, or because we've already done some
1782  // merging. Either way, just merge into it.
1783  CXXRecordDecl *Canon = D->getCanonicalDecl();
1784  if (Canon->DefinitionData) {
1785  MergeDefinitionData(Canon, std::move(*DD));
1786  D->DefinitionData = Canon->DefinitionData;
1787  return;
1788  }
1789 
1790  // Mark this declaration as being a definition.
1791  D->IsCompleteDefinition = true;
1792  D->DefinitionData = DD;
1793 
1794  // If this is not the first declaration or is an update record, we can have
1795  // other redeclarations already. Make a note that we need to propagate the
1796  // DefinitionData pointer onto them.
1797  if (Update || Canon != D) {
1798  Canon->DefinitionData = D->DefinitionData;
1799  Reader.PendingDefinitions.insert(D);
1800  }
1801 }
1802 
1803 ASTDeclReader::RedeclarableResult
1805  RedeclarableResult Redecl = VisitRecordDeclImpl(D);
1806 
1807  ASTContext &C = Reader.getContext();
1808 
1809  enum CXXRecKind {
1810  CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1811  };
1812  switch ((CXXRecKind)Record.readInt()) {
1813  case CXXRecNotTemplate:
1814  // Merged when we merge the folding set entry in the primary template.
1815  if (!isa<ClassTemplateSpecializationDecl>(D))
1816  mergeRedeclarable(D, Redecl);
1817  break;
1818  case CXXRecTemplate: {
1819  // Merged when we merge the template.
1820  ClassTemplateDecl *Template = ReadDeclAs<ClassTemplateDecl>();
1821  D->TemplateOrInstantiation = Template;
1822  if (!Template->getTemplatedDecl()) {
1823  // We've not actually loaded the ClassTemplateDecl yet, because we're
1824  // currently being loaded as its pattern. Rely on it to set up our
1825  // TypeForDecl (see VisitClassTemplateDecl).
1826  //
1827  // Beware: we do not yet know our canonical declaration, and may still
1828  // get merged once the surrounding class template has got off the ground.
1829  TypeIDForTypeDecl = 0;
1830  }
1831  break;
1832  }
1833  case CXXRecMemberSpecialization: {
1834  CXXRecordDecl *RD = ReadDeclAs<CXXRecordDecl>();
1836  (TemplateSpecializationKind)Record.readInt();
1837  SourceLocation POI = ReadSourceLocation();
1838  MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
1839  MSI->setPointOfInstantiation(POI);
1840  D->TemplateOrInstantiation = MSI;
1841  mergeRedeclarable(D, Redecl);
1842  break;
1843  }
1844  }
1845 
1846  bool WasDefinition = Record.readInt();
1847  if (WasDefinition)
1848  ReadCXXRecordDefinition(D, /*Update*/false);
1849  else
1850  // Propagate DefinitionData pointer from the canonical declaration.
1851  D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
1852 
1853  // Lazily load the key function to avoid deserializing every method so we can
1854  // compute it.
1855  if (WasDefinition) {
1856  DeclID KeyFn = ReadDeclID();
1857  if (KeyFn && D->IsCompleteDefinition)
1858  // FIXME: This is wrong for the ARM ABI, where some other module may have
1859  // made this function no longer be a key function. We need an update
1860  // record or similar for that case.
1861  C.KeyFunctions[D] = KeyFn;
1862  }
1863 
1864  return Redecl;
1865 }
1866 
1868  VisitFunctionDecl(D);
1869  D->IsCopyDeductionCandidate = Record.readInt();
1870 }
1871 
1873  VisitFunctionDecl(D);
1874 
1875  unsigned NumOverridenMethods = Record.readInt();
1876  if (D->isCanonicalDecl()) {
1877  while (NumOverridenMethods--) {
1878  // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
1879  // MD may be initializing.
1880  if (CXXMethodDecl *MD = ReadDeclAs<CXXMethodDecl>())
1881  Reader.getContext().addOverriddenMethod(D, MD->getCanonicalDecl());
1882  }
1883  } else {
1884  // We don't care about which declarations this used to override; we get
1885  // the relevant information from the canonical declaration.
1886  Record.skipInts(NumOverridenMethods);
1887  }
1888 }
1889 
1891  // We need the inherited constructor information to merge the declaration,
1892  // so we have to read it before we call VisitCXXMethodDecl.
1893  if (D->isInheritingConstructor()) {
1894  auto *Shadow = ReadDeclAs<ConstructorUsingShadowDecl>();
1895  auto *Ctor = ReadDeclAs<CXXConstructorDecl>();
1896  *D->getTrailingObjects<InheritedConstructor>() =
1897  InheritedConstructor(Shadow, Ctor);
1898  }
1899 
1900  VisitCXXMethodDecl(D);
1901 }
1902 
1904  VisitCXXMethodDecl(D);
1905 
1906  if (auto *OperatorDelete = ReadDeclAs<FunctionDecl>()) {
1907  auto *Canon = cast<CXXDestructorDecl>(D->getCanonicalDecl());
1908  auto *ThisArg = Record.readExpr();
1909  // FIXME: Check consistency if we have an old and new operator delete.
1910  if (!Canon->OperatorDelete) {
1911  Canon->OperatorDelete = OperatorDelete;
1912  Canon->OperatorDeleteThisArg = ThisArg;
1913  }
1914  }
1915 }
1916 
1918  VisitCXXMethodDecl(D);
1919 }
1920 
1922  VisitDecl(D);
1923  D->ImportedAndComplete.setPointer(readModule());
1924  D->ImportedAndComplete.setInt(Record.readInt());
1925  SourceLocation *StoredLocs = D->getTrailingObjects<SourceLocation>();
1926  for (unsigned I = 0, N = Record.back(); I != N; ++I)
1927  StoredLocs[I] = ReadSourceLocation();
1928  Record.skipInts(1); // The number of stored source locations.
1929 }
1930 
1932  VisitDecl(D);
1933  D->setColonLoc(ReadSourceLocation());
1934 }
1935 
1937  VisitDecl(D);
1938  if (Record.readInt()) // hasFriendDecl
1939  D->Friend = ReadDeclAs<NamedDecl>();
1940  else
1941  D->Friend = GetTypeSourceInfo();
1942  for (unsigned i = 0; i != D->NumTPLists; ++i)
1943  D->getTrailingObjects<TemplateParameterList *>()[i] =
1944  Record.readTemplateParameterList();
1945  D->NextFriend = ReadDeclID();
1946  D->UnsupportedFriend = (Record.readInt() != 0);
1947  D->FriendLoc = ReadSourceLocation();
1948 }
1949 
1951  VisitDecl(D);
1952  unsigned NumParams = Record.readInt();
1953  D->NumParams = NumParams;
1954  D->Params = new TemplateParameterList*[NumParams];
1955  for (unsigned i = 0; i != NumParams; ++i)
1956  D->Params[i] = Record.readTemplateParameterList();
1957  if (Record.readInt()) // HasFriendDecl
1958  D->Friend = ReadDeclAs<NamedDecl>();
1959  else
1960  D->Friend = GetTypeSourceInfo();
1961  D->FriendLoc = ReadSourceLocation();
1962 }
1963 
1965  VisitNamedDecl(D);
1966 
1967  DeclID PatternID = ReadDeclID();
1968  NamedDecl *TemplatedDecl = cast_or_null<NamedDecl>(Reader.GetDecl(PatternID));
1969  TemplateParameterList *TemplateParams = Record.readTemplateParameterList();
1970  // FIXME handle associated constraints
1971  D->init(TemplatedDecl, TemplateParams);
1972 
1973  return PatternID;
1974 }
1975 
1976 ASTDeclReader::RedeclarableResult
1978  RedeclarableResult Redecl = VisitRedeclarable(D);
1979 
1980  // Make sure we've allocated the Common pointer first. We do this before
1981  // VisitTemplateDecl so that getCommonPtr() can be used during initialization.
1983  if (!CanonD->Common) {
1984  CanonD->Common = CanonD->newCommon(Reader.getContext());
1985  Reader.PendingDefinitions.insert(CanonD);
1986  }
1987  D->Common = CanonD->Common;
1988 
1989  // If this is the first declaration of the template, fill in the information
1990  // for the 'common' pointer.
1991  if (ThisDeclID == Redecl.getFirstID()) {
1992  if (RedeclarableTemplateDecl *RTD
1993  = ReadDeclAs<RedeclarableTemplateDecl>()) {
1994  assert(RTD->getKind() == D->getKind() &&
1995  "InstantiatedFromMemberTemplate kind mismatch");
1997  if (Record.readInt())
1999  }
2000  }
2001 
2002  DeclID PatternID = VisitTemplateDecl(D);
2003  D->IdentifierNamespace = Record.readInt();
2004 
2005  mergeRedeclarable(D, Redecl, PatternID);
2006 
2007  // If we merged the template with a prior declaration chain, merge the common
2008  // pointer.
2009  // FIXME: Actually merge here, don't just overwrite.
2010  D->Common = D->getCanonicalDecl()->Common;
2011 
2012  return Redecl;
2013 }
2014 
2016  RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2017 
2018  if (ThisDeclID == Redecl.getFirstID()) {
2019  // This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of
2020  // the specializations.
2022  ReadDeclIDList(SpecIDs);
2024  }
2025 
2026  if (D->getTemplatedDecl()->TemplateOrInstantiation) {
2027  // We were loaded before our templated declaration was. We've not set up
2028  // its corresponding type yet (see VisitCXXRecordDeclImpl), so reconstruct
2029  // it now.
2030  Reader.getContext().getInjectedClassNameType(
2032  }
2033 }
2034 
2036  llvm_unreachable("BuiltinTemplates are not serialized");
2037 }
2038 
2039 /// TODO: Unify with ClassTemplateDecl version?
2040 /// May require unifying ClassTemplateDecl and
2041 /// VarTemplateDecl beyond TemplateDecl...
2043  RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2044 
2045  if (ThisDeclID == Redecl.getFirstID()) {
2046  // This VarTemplateDecl owns a CommonPtr; read it to keep track of all of
2047  // the specializations.
2049  ReadDeclIDList(SpecIDs);
2051  }
2052 }
2053 
2054 ASTDeclReader::RedeclarableResult
2057  RedeclarableResult Redecl = VisitCXXRecordDeclImpl(D);
2058 
2059  ASTContext &C = Reader.getContext();
2060  if (Decl *InstD = ReadDecl()) {
2061  if (ClassTemplateDecl *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
2062  D->SpecializedTemplate = CTD;
2063  } else {
2065  Record.readTemplateArgumentList(TemplArgs);
2066  TemplateArgumentList *ArgList
2067  = TemplateArgumentList::CreateCopy(C, TemplArgs);
2068  ClassTemplateSpecializationDecl::SpecializedPartialSpecialization *PS
2070  SpecializedPartialSpecialization();
2071  PS->PartialSpecialization
2072  = cast<ClassTemplatePartialSpecializationDecl>(InstD);
2073  PS->TemplateArgs = ArgList;
2074  D->SpecializedTemplate = PS;
2075  }
2076  }
2077 
2079  Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2080  D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2081  D->PointOfInstantiation = ReadSourceLocation();
2082  D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2083 
2084  bool writtenAsCanonicalDecl = Record.readInt();
2085  if (writtenAsCanonicalDecl) {
2086  ClassTemplateDecl *CanonPattern = ReadDeclAs<ClassTemplateDecl>();
2087  if (D->isCanonicalDecl()) { // It's kept in the folding set.
2088  // Set this as, or find, the canonical declaration for this specialization
2091  dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
2092  CanonSpec = CanonPattern->getCommonPtr()->PartialSpecializations
2093  .GetOrInsertNode(Partial);
2094  } else {
2095  CanonSpec =
2096  CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2097  }
2098  // If there was already a canonical specialization, merge into it.
2099  if (CanonSpec != D) {
2100  mergeRedeclarable<TagDecl>(D, CanonSpec, Redecl);
2101 
2102  // This declaration might be a definition. Merge with any existing
2103  // definition.
2104  if (auto *DDD = D->DefinitionData) {
2105  if (CanonSpec->DefinitionData)
2106  MergeDefinitionData(CanonSpec, std::move(*DDD));
2107  else
2108  CanonSpec->DefinitionData = D->DefinitionData;
2109  }
2110  D->DefinitionData = CanonSpec->DefinitionData;
2111  }
2112  }
2113  }
2114 
2115  // Explicit info.
2116  if (TypeSourceInfo *TyInfo = GetTypeSourceInfo()) {
2117  ClassTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo
2118  = new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
2119  ExplicitInfo->TypeAsWritten = TyInfo;
2120  ExplicitInfo->ExternLoc = ReadSourceLocation();
2121  ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation();
2122  D->ExplicitInfo = ExplicitInfo;
2123  }
2124 
2125  return Redecl;
2126 }
2127 
2130  RedeclarableResult Redecl = VisitClassTemplateSpecializationDeclImpl(D);
2131 
2132  D->TemplateParams = Record.readTemplateParameterList();
2133  D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2134 
2135  // These are read/set from/to the first declaration.
2136  if (ThisDeclID == Redecl.getFirstID()) {
2137  D->InstantiatedFromMember.setPointer(
2138  ReadDeclAs<ClassTemplatePartialSpecializationDecl>());
2139  D->InstantiatedFromMember.setInt(Record.readInt());
2140  }
2141 }
2142 
2145  VisitDecl(D);
2146  D->Specialization = ReadDeclAs<CXXMethodDecl>();
2147 }
2148 
2150  RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2151 
2152  if (ThisDeclID == Redecl.getFirstID()) {
2153  // This FunctionTemplateDecl owns a CommonPtr; read it.
2155  ReadDeclIDList(SpecIDs);
2157  }
2158 }
2159 
2160 /// TODO: Unify with ClassTemplateSpecializationDecl version?
2161 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
2162 /// VarTemplate(Partial)SpecializationDecl with a new data
2163 /// structure Template(Partial)SpecializationDecl, and
2164 /// using Template(Partial)SpecializationDecl as input type.
2165 ASTDeclReader::RedeclarableResult
2168  RedeclarableResult Redecl = VisitVarDeclImpl(D);
2169 
2170  ASTContext &C = Reader.getContext();
2171  if (Decl *InstD = ReadDecl()) {
2172  if (VarTemplateDecl *VTD = dyn_cast<VarTemplateDecl>(InstD)) {
2173  D->SpecializedTemplate = VTD;
2174  } else {
2176  Record.readTemplateArgumentList(TemplArgs);
2178  C, TemplArgs);
2179  VarTemplateSpecializationDecl::SpecializedPartialSpecialization *PS =
2180  new (C)
2181  VarTemplateSpecializationDecl::SpecializedPartialSpecialization();
2182  PS->PartialSpecialization =
2183  cast<VarTemplatePartialSpecializationDecl>(InstD);
2184  PS->TemplateArgs = ArgList;
2185  D->SpecializedTemplate = PS;
2186  }
2187  }
2188 
2189  // Explicit info.
2190  if (TypeSourceInfo *TyInfo = GetTypeSourceInfo()) {
2191  VarTemplateSpecializationDecl::ExplicitSpecializationInfo *ExplicitInfo =
2192  new (C) VarTemplateSpecializationDecl::ExplicitSpecializationInfo;
2193  ExplicitInfo->TypeAsWritten = TyInfo;
2194  ExplicitInfo->ExternLoc = ReadSourceLocation();
2195  ExplicitInfo->TemplateKeywordLoc = ReadSourceLocation();
2196  D->ExplicitInfo = ExplicitInfo;
2197  }
2198 
2200  Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2201  D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2202  D->PointOfInstantiation = ReadSourceLocation();
2203  D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2204  D->IsCompleteDefinition = Record.readInt();
2205 
2206  bool writtenAsCanonicalDecl = Record.readInt();
2207  if (writtenAsCanonicalDecl) {
2208  VarTemplateDecl *CanonPattern = ReadDeclAs<VarTemplateDecl>();
2209  if (D->isCanonicalDecl()) { // It's kept in the folding set.
2210  // FIXME: If it's already present, merge it.
2212  dyn_cast<VarTemplatePartialSpecializationDecl>(D)) {
2213  CanonPattern->getCommonPtr()->PartialSpecializations
2214  .GetOrInsertNode(Partial);
2215  } else {
2216  CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2217  }
2218  }
2219  }
2220 
2221  return Redecl;
2222 }
2223 
2224 /// TODO: Unify with ClassTemplatePartialSpecializationDecl version?
2225 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
2226 /// VarTemplate(Partial)SpecializationDecl with a new data
2227 /// structure Template(Partial)SpecializationDecl, and
2228 /// using Template(Partial)SpecializationDecl as input type.
2231  RedeclarableResult Redecl = VisitVarTemplateSpecializationDeclImpl(D);
2232 
2233  D->TemplateParams = Record.readTemplateParameterList();
2234  D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2235 
2236  // These are read/set from/to the first declaration.
2237  if (ThisDeclID == Redecl.getFirstID()) {
2238  D->InstantiatedFromMember.setPointer(
2239  ReadDeclAs<VarTemplatePartialSpecializationDecl>());
2240  D->InstantiatedFromMember.setInt(Record.readInt());
2241  }
2242 }
2243 
2245  VisitTypeDecl(D);
2246 
2247  D->setDeclaredWithTypename(Record.readInt());
2248 
2249  if (Record.readInt())
2250  D->setDefaultArgument(GetTypeSourceInfo());
2251 }
2252 
2254  VisitDeclaratorDecl(D);
2255  // TemplateParmPosition.
2256  D->setDepth(Record.readInt());
2257  D->setPosition(Record.readInt());
2258  if (D->isExpandedParameterPack()) {
2259  auto TypesAndInfos =
2260  D->getTrailingObjects<std::pair<QualType, TypeSourceInfo *>>();
2261  for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
2262  new (&TypesAndInfos[I].first) QualType(Record.readType());
2263  TypesAndInfos[I].second = GetTypeSourceInfo();
2264  }
2265  } else {
2266  // Rest of NonTypeTemplateParmDecl.
2267  D->ParameterPack = Record.readInt();
2268  if (Record.readInt())
2269  D->setDefaultArgument(Record.readExpr());
2270  }
2271 }
2272 
2274  VisitTemplateDecl(D);
2275  // TemplateParmPosition.
2276  D->setDepth(Record.readInt());
2277  D->setPosition(Record.readInt());
2278  if (D->isExpandedParameterPack()) {
2279  TemplateParameterList **Data =
2280  D->getTrailingObjects<TemplateParameterList *>();
2281  for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
2282  I != N; ++I)
2283  Data[I] = Record.readTemplateParameterList();
2284  } else {
2285  // Rest of TemplateTemplateParmDecl.
2286  D->ParameterPack = Record.readInt();
2287  if (Record.readInt())
2288  D->setDefaultArgument(Reader.getContext(),
2289  Record.readTemplateArgumentLoc());
2290  }
2291 }
2292 
2294  VisitRedeclarableTemplateDecl(D);
2295 }
2296 
2298  VisitDecl(D);
2299  D->AssertExprAndFailed.setPointer(Record.readExpr());
2300  D->AssertExprAndFailed.setInt(Record.readInt());
2301  D->Message = cast_or_null<StringLiteral>(Record.readExpr());
2302  D->RParenLoc = ReadSourceLocation();
2303 }
2304 
2306  VisitDecl(D);
2307 }
2308 
2309 std::pair<uint64_t, uint64_t>
2311  uint64_t LexicalOffset = ReadLocalOffset();
2312  uint64_t VisibleOffset = ReadLocalOffset();
2313  return std::make_pair(LexicalOffset, VisibleOffset);
2314 }
2315 
2316 template <typename T>
2317 ASTDeclReader::RedeclarableResult
2319  DeclID FirstDeclID = ReadDeclID();
2320  Decl *MergeWith = nullptr;
2321 
2322  bool IsKeyDecl = ThisDeclID == FirstDeclID;
2323  bool IsFirstLocalDecl = false;
2324 
2325  uint64_t RedeclOffset = 0;
2326 
2327  // 0 indicates that this declaration was the only declaration of its entity,
2328  // and is used for space optimization.
2329  if (FirstDeclID == 0) {
2330  FirstDeclID = ThisDeclID;
2331  IsKeyDecl = true;
2332  IsFirstLocalDecl = true;
2333  } else if (unsigned N = Record.readInt()) {
2334  // This declaration was the first local declaration, but may have imported
2335  // other declarations.
2336  IsKeyDecl = N == 1;
2337  IsFirstLocalDecl = true;
2338 
2339  // We have some declarations that must be before us in our redeclaration
2340  // chain. Read them now, and remember that we ought to merge with one of
2341  // them.
2342  // FIXME: Provide a known merge target to the second and subsequent such
2343  // declaration.
2344  for (unsigned I = 0; I != N - 1; ++I)
2345  MergeWith = ReadDecl();
2346 
2347  RedeclOffset = ReadLocalOffset();
2348  } else {
2349  // This declaration was not the first local declaration. Read the first
2350  // local declaration now, to trigger the import of other redeclarations.
2351  (void)ReadDecl();
2352  }
2353 
2354  T *FirstDecl = cast_or_null<T>(Reader.GetDecl(FirstDeclID));
2355  if (FirstDecl != D) {
2356  // We delay loading of the redeclaration chain to avoid deeply nested calls.
2357  // We temporarily set the first (canonical) declaration as the previous one
2358  // which is the one that matters and mark the real previous DeclID to be
2359  // loaded & attached later on.
2361  D->First = FirstDecl->getCanonicalDecl();
2362  }
2363 
2364  T *DAsT = static_cast<T*>(D);
2365 
2366  // Note that we need to load local redeclarations of this decl and build a
2367  // decl chain for them. This must happen *after* we perform the preloading
2368  // above; this ensures that the redeclaration chain is built in the correct
2369  // order.
2370  if (IsFirstLocalDecl)
2371  Reader.PendingDeclChains.push_back(std::make_pair(DAsT, RedeclOffset));
2372 
2373  return RedeclarableResult(MergeWith, FirstDeclID, IsKeyDecl);
2374 }
2375 
2376 /// \brief Attempts to merge the given declaration (D) with another declaration
2377 /// of the same entity.
2378 template<typename T>
2380  RedeclarableResult &Redecl,
2381  DeclID TemplatePatternID) {
2382  // If modules are not available, there is no reason to perform this merge.
2383  if (!Reader.getContext().getLangOpts().Modules)
2384  return;
2385 
2386  // If we're not the canonical declaration, we don't need to merge.
2387  if (!DBase->isFirstDecl())
2388  return;
2389 
2390  T *D = static_cast<T*>(DBase);
2391 
2392  if (auto *Existing = Redecl.getKnownMergeTarget())
2393  // We already know of an existing declaration we should merge with.
2394  mergeRedeclarable(D, cast<T>(Existing), Redecl, TemplatePatternID);
2395  else if (FindExistingResult ExistingRes = findExisting(D))
2396  if (T *Existing = ExistingRes)
2397  mergeRedeclarable(D, Existing, Redecl, TemplatePatternID);
2398 }
2399 
2400 /// \brief "Cast" to type T, asserting if we don't have an implicit conversion.
2401 /// We use this to put code in a template that will only be valid for certain
2402 /// instantiations.
2403 template<typename T> static T assert_cast(T t) { return t; }
2404 template<typename T> static T assert_cast(...) {
2405  llvm_unreachable("bad assert_cast");
2406 }
2407 
2408 /// \brief Merge together the pattern declarations from two template
2409 /// declarations.
2411  RedeclarableTemplateDecl *Existing,
2412  DeclID DsID, bool IsKeyDecl) {
2413  auto *DPattern = D->getTemplatedDecl();
2414  auto *ExistingPattern = Existing->getTemplatedDecl();
2415  RedeclarableResult Result(/*MergeWith*/ ExistingPattern,
2416  DPattern->getCanonicalDecl()->getGlobalID(),
2417  IsKeyDecl);
2418 
2419  if (auto *DClass = dyn_cast<CXXRecordDecl>(DPattern)) {
2420  // Merge with any existing definition.
2421  // FIXME: This is duplicated in several places. Refactor.
2422  auto *ExistingClass =
2423  cast<CXXRecordDecl>(ExistingPattern)->getCanonicalDecl();
2424  if (auto *DDD = DClass->DefinitionData) {
2425  if (ExistingClass->DefinitionData) {
2426  MergeDefinitionData(ExistingClass, std::move(*DDD));
2427  } else {
2428  ExistingClass->DefinitionData = DClass->DefinitionData;
2429  // We may have skipped this before because we thought that DClass
2430  // was the canonical declaration.
2431  Reader.PendingDefinitions.insert(DClass);
2432  }
2433  }
2434  DClass->DefinitionData = ExistingClass->DefinitionData;
2435 
2436  return mergeRedeclarable(DClass, cast<TagDecl>(ExistingPattern),
2437  Result);
2438  }
2439  if (auto *DFunction = dyn_cast<FunctionDecl>(DPattern))
2440  return mergeRedeclarable(DFunction, cast<FunctionDecl>(ExistingPattern),
2441  Result);
2442  if (auto *DVar = dyn_cast<VarDecl>(DPattern))
2443  return mergeRedeclarable(DVar, cast<VarDecl>(ExistingPattern), Result);
2444  if (auto *DAlias = dyn_cast<TypeAliasDecl>(DPattern))
2445  return mergeRedeclarable(DAlias, cast<TypedefNameDecl>(ExistingPattern),
2446  Result);
2447  llvm_unreachable("merged an unknown kind of redeclarable template");
2448 }
2449 
2450 /// \brief Attempts to merge the given declaration (D) with another declaration
2451 /// of the same entity.
2452 template<typename T>
2454  RedeclarableResult &Redecl,
2455  DeclID TemplatePatternID) {
2456  T *D = static_cast<T*>(DBase);
2457  T *ExistingCanon = Existing->getCanonicalDecl();
2458  T *DCanon = D->getCanonicalDecl();
2459  if (ExistingCanon != DCanon) {
2460  assert(DCanon->getGlobalID() == Redecl.getFirstID() &&
2461  "already merged this declaration");
2462 
2463  // Have our redeclaration link point back at the canonical declaration
2464  // of the existing declaration, so that this declaration has the
2465  // appropriate canonical declaration.
2466  D->RedeclLink = Redeclarable<T>::PreviousDeclLink(ExistingCanon);
2467  D->First = ExistingCanon;
2468  ExistingCanon->Used |= D->Used;
2469  D->Used = false;
2470 
2471  // When we merge a namespace, update its pointer to the first namespace.
2472  // We cannot have loaded any redeclarations of this declaration yet, so
2473  // there's nothing else that needs to be updated.
2474  if (auto *Namespace = dyn_cast<NamespaceDecl>(D))
2475  Namespace->AnonOrFirstNamespaceAndInline.setPointer(
2476  assert_cast<NamespaceDecl*>(ExistingCanon));
2477 
2478  // When we merge a template, merge its pattern.
2479  if (auto *DTemplate = dyn_cast<RedeclarableTemplateDecl>(D))
2480  mergeTemplatePattern(
2481  DTemplate, assert_cast<RedeclarableTemplateDecl*>(ExistingCanon),
2482  TemplatePatternID, Redecl.isKeyDecl());
2483 
2484  // If this declaration is a key declaration, make a note of that.
2485  if (Redecl.isKeyDecl())
2486  Reader.KeyDecls[ExistingCanon].push_back(Redecl.getFirstID());
2487  }
2488 }
2489 
2490 /// \brief Attempts to merge the given declaration (D) with another declaration
2491 /// of the same entity, for the case where the entity is not actually
2492 /// redeclarable. This happens, for instance, when merging the fields of
2493 /// identical class definitions from two different modules.
2494 template<typename T>
2496  // If modules are not available, there is no reason to perform this merge.
2497  if (!Reader.getContext().getLangOpts().Modules)
2498  return;
2499 
2500  // ODR-based merging is only performed in C++. In C, identically-named things
2501  // in different translation units are not redeclarations (but may still have
2502  // compatible types).
2503  if (!Reader.getContext().getLangOpts().CPlusPlus)
2504  return;
2505 
2506  if (FindExistingResult ExistingRes = findExisting(static_cast<T*>(D)))
2507  if (T *Existing = ExistingRes)
2508  Reader.getContext().setPrimaryMergedDecl(static_cast<T *>(D),
2509  Existing->getCanonicalDecl());
2510 }
2511 
2513  VisitDecl(D);
2514  unsigned NumVars = D->varlist_size();
2516  Vars.reserve(NumVars);
2517  for (unsigned i = 0; i != NumVars; ++i) {
2518  Vars.push_back(Record.readExpr());
2519  }
2520  D->setVars(Vars);
2521 }
2522 
2524  VisitValueDecl(D);
2525  D->setLocation(ReadSourceLocation());
2526  D->setCombiner(Record.readExpr());
2527  D->setInitializer(
2528  Record.readExpr(),
2529  static_cast<OMPDeclareReductionDecl::InitKind>(Record.readInt()));
2530  D->PrevDeclInScope = ReadDeclID();
2531 }
2532 
2534  VisitVarDecl(D);
2535 }
2536 
2537 //===----------------------------------------------------------------------===//
2538 // Attribute Reading
2539 //===----------------------------------------------------------------------===//
2540 
2541 /// \brief Reads attributes from the current stream position.
2543  for (unsigned i = 0, e = Record.readInt(); i != e; ++i) {
2544  Attr *New = nullptr;
2545  attr::Kind Kind = (attr::Kind)Record.readInt();
2546  SourceRange Range = Record.readSourceRange();
2547  ASTContext &Context = getContext();
2548 
2549 #include "clang/Serialization/AttrPCHRead.inc"
2550 
2551  assert(New && "Unable to decode attribute?");
2552  Attrs.push_back(New);
2553  }
2554 }
2555 
2556 //===----------------------------------------------------------------------===//
2557 // ASTReader Implementation
2558 //===----------------------------------------------------------------------===//
2559 
2560 /// \brief Note that we have loaded the declaration with the given
2561 /// Index.
2562 ///
2563 /// This routine notes that this declaration has already been loaded,
2564 /// so that future GetDecl calls will return this declaration rather
2565 /// than trying to load a new declaration.
2566 inline void ASTReader::LoadedDecl(unsigned Index, Decl *D) {
2567  assert(!DeclsLoaded[Index] && "Decl loaded twice?");
2568  DeclsLoaded[Index] = D;
2569 }
2570 
2571 
2572 /// \brief Determine whether the consumer will be interested in seeing
2573 /// this declaration (via HandleTopLevelDecl).
2574 ///
2575 /// This routine should return true for anything that might affect
2576 /// code generation, e.g., inline function definitions, Objective-C
2577 /// declarations with metadata, etc.
2578 static bool isConsumerInterestedIn(ASTContext &Ctx, Decl *D, bool HasBody) {
2579  // An ObjCMethodDecl is never considered as "interesting" because its
2580  // implementation container always is.
2581 
2582  // An ImportDecl or VarDecl imported from a module map module will get
2583  // emitted when we import the relevant module.
2584  if (isa<ImportDecl>(D) || isa<VarDecl>(D)) {
2585  auto *M = D->getImportedOwningModule();
2586  if (M && M->Kind == Module::ModuleMapModule &&
2587  Ctx.DeclMustBeEmitted(D))
2588  return false;
2589  }
2590 
2591  if (isa<FileScopeAsmDecl>(D) ||
2592  isa<ObjCProtocolDecl>(D) ||
2593  isa<ObjCImplDecl>(D) ||
2594  isa<ImportDecl>(D) ||
2595  isa<PragmaCommentDecl>(D) ||
2596  isa<PragmaDetectMismatchDecl>(D))
2597  return true;
2598  if (isa<OMPThreadPrivateDecl>(D) || isa<OMPDeclareReductionDecl>(D))
2599  return !D->getDeclContext()->isFunctionOrMethod();
2600  if (VarDecl *Var = dyn_cast<VarDecl>(D))
2601  return Var->isFileVarDecl() &&
2602  Var->isThisDeclarationADefinition() == VarDecl::Definition;
2603  if (FunctionDecl *Func = dyn_cast<FunctionDecl>(D))
2604  return Func->doesThisDeclarationHaveABody() || HasBody;
2605 
2606  if (auto *ES = D->getASTContext().getExternalSource())
2607  if (ES->hasExternalDefinitions(D) == ExternalASTSource::EK_Never)
2608  return true;
2609 
2610  return false;
2611 }
2612 
2613 /// \brief Get the correct cursor and offset for loading a declaration.
2614 ASTReader::RecordLocation
2615 ASTReader::DeclCursorForID(DeclID ID, SourceLocation &Loc) {
2616  GlobalDeclMapType::iterator I = GlobalDeclMap.find(ID);
2617  assert(I != GlobalDeclMap.end() && "Corrupted global declaration map");
2618  ModuleFile *M = I->second;
2619  const DeclOffset &DOffs =
2620  M->DeclOffsets[ID - M->BaseDeclID - NUM_PREDEF_DECL_IDS];
2621  Loc = TranslateSourceLocation(*M, DOffs.getLocation());
2622  return RecordLocation(M, DOffs.BitOffset);
2623 }
2624 
2625 ASTReader::RecordLocation ASTReader::getLocalBitOffset(uint64_t GlobalOffset) {
2627  = GlobalBitOffsetsMap.find(GlobalOffset);
2628 
2629  assert(I != GlobalBitOffsetsMap.end() && "Corrupted global bit offsets map");
2630  return RecordLocation(I->second, GlobalOffset - I->second->GlobalBitOffset);
2631 }
2632 
2633 uint64_t ASTReader::getGlobalBitOffset(ModuleFile &M, uint32_t LocalOffset) {
2634  return LocalOffset + M.GlobalBitOffset;
2635 }
2636 
2638  const TemplateParameterList *Y);
2639 
2640 /// \brief Determine whether two template parameters are similar enough
2641 /// that they may be used in declarations of the same template.
2642 static bool isSameTemplateParameter(const NamedDecl *X,
2643  const NamedDecl *Y) {
2644  if (X->getKind() != Y->getKind())
2645  return false;
2646 
2647  if (const TemplateTypeParmDecl *TX = dyn_cast<TemplateTypeParmDecl>(X)) {
2648  const TemplateTypeParmDecl *TY = cast<TemplateTypeParmDecl>(Y);
2649  return TX->isParameterPack() == TY->isParameterPack();
2650  }
2651 
2652  if (const NonTypeTemplateParmDecl *TX = dyn_cast<NonTypeTemplateParmDecl>(X)) {
2653  const NonTypeTemplateParmDecl *TY = cast<NonTypeTemplateParmDecl>(Y);
2654  return TX->isParameterPack() == TY->isParameterPack() &&
2655  TX->getASTContext().hasSameType(TX->getType(), TY->getType());
2656  }
2657 
2658  const TemplateTemplateParmDecl *TX = cast<TemplateTemplateParmDecl>(X);
2659  const TemplateTemplateParmDecl *TY = cast<TemplateTemplateParmDecl>(Y);
2660  return TX->isParameterPack() == TY->isParameterPack() &&
2662  TY->getTemplateParameters());
2663 }
2664 
2666  if (auto *NS = X->getAsNamespace())
2667  return NS;
2668  if (auto *NAS = X->getAsNamespaceAlias())
2669  return NAS->getNamespace();
2670  return nullptr;
2671 }
2672 
2674  const NestedNameSpecifier *Y) {
2675  if (auto *NSX = getNamespace(X)) {
2676  auto *NSY = getNamespace(Y);
2677  if (!NSY || NSX->getCanonicalDecl() != NSY->getCanonicalDecl())
2678  return false;
2679  } else if (X->getKind() != Y->getKind())
2680  return false;
2681 
2682  // FIXME: For namespaces and types, we're permitted to check that the entity
2683  // is named via the same tokens. We should probably do so.
2684  switch (X->getKind()) {
2686  if (X->getAsIdentifier() != Y->getAsIdentifier())
2687  return false;
2688  break;
2691  // We've already checked that we named the same namespace.
2692  break;
2695  if (X->getAsType()->getCanonicalTypeInternal() !=
2697  return false;
2698  break;
2701  return true;
2702  }
2703 
2704  // Recurse into earlier portion of NNS, if any.
2705  auto *PX = X->getPrefix();
2706  auto *PY = Y->getPrefix();
2707  if (PX && PY)
2708  return isSameQualifier(PX, PY);
2709  return !PX && !PY;
2710 }
2711 
2712 /// \brief Determine whether two template parameter lists are similar enough
2713 /// that they may be used in declarations of the same template.
2715  const TemplateParameterList *Y) {
2716  if (X->size() != Y->size())
2717  return false;
2718 
2719  for (unsigned I = 0, N = X->size(); I != N; ++I)
2720  if (!isSameTemplateParameter(X->getParam(I), Y->getParam(I)))
2721  return false;
2722 
2723  return true;
2724 }
2725 
2726 /// Determine whether the attributes we can overload on are identical for A and
2727 /// B. Will ignore any overloadable attrs represented in the type of A and B.
2729  const FunctionDecl *B) {
2730  // Note that pass_object_size attributes are represented in the function's
2731  // ExtParameterInfo, so we don't need to check them here.
2732 
2734  // Since this is an equality check, we can ignore that enable_if attrs show up
2735  // in reverse order.
2736  for (const auto *EIA : A->specific_attrs<EnableIfAttr>())
2737  AEnableIfs.push_back(EIA);
2738 
2740  for (const auto *EIA : B->specific_attrs<EnableIfAttr>())
2741  BEnableIfs.push_back(EIA);
2742 
2743  // Two very common cases: either we have 0 enable_if attrs, or we have an
2744  // unequal number of enable_if attrs.
2745  if (AEnableIfs.empty() && BEnableIfs.empty())
2746  return true;
2747 
2748  if (AEnableIfs.size() != BEnableIfs.size())
2749  return false;
2750 
2751  llvm::FoldingSetNodeID Cand1ID, Cand2ID;
2752  for (unsigned I = 0, E = AEnableIfs.size(); I != E; ++I) {
2753  Cand1ID.clear();
2754  Cand2ID.clear();
2755 
2756  AEnableIfs[I]->getCond()->Profile(Cand1ID, A->getASTContext(), true);
2757  BEnableIfs[I]->getCond()->Profile(Cand2ID, B->getASTContext(), true);
2758  if (Cand1ID != Cand2ID)
2759  return false;
2760  }
2761 
2762  return true;
2763 }
2764 
2765 /// \brief Determine whether the two declarations refer to the same entity.
2766 static bool isSameEntity(NamedDecl *X, NamedDecl *Y) {
2767  assert(X->getDeclName() == Y->getDeclName() && "Declaration name mismatch!");
2768 
2769  if (X == Y)
2770  return true;
2771 
2772  // Must be in the same context.
2773  if (!X->getDeclContext()->getRedeclContext()->Equals(
2775  return false;
2776 
2777  // Two typedefs refer to the same entity if they have the same underlying
2778  // type.
2779  if (TypedefNameDecl *TypedefX = dyn_cast<TypedefNameDecl>(X))
2780  if (TypedefNameDecl *TypedefY = dyn_cast<TypedefNameDecl>(Y))
2781  return X->getASTContext().hasSameType(TypedefX->getUnderlyingType(),
2782  TypedefY->getUnderlyingType());
2783 
2784  // Must have the same kind.
2785  if (X->getKind() != Y->getKind())
2786  return false;
2787 
2788  // Objective-C classes and protocols with the same name always match.
2789  if (isa<ObjCInterfaceDecl>(X) || isa<ObjCProtocolDecl>(X))
2790  return true;
2791 
2792  if (isa<ClassTemplateSpecializationDecl>(X)) {
2793  // No need to handle these here: we merge them when adding them to the
2794  // template.
2795  return false;
2796  }
2797 
2798  // Compatible tags match.
2799  if (TagDecl *TagX = dyn_cast<TagDecl>(X)) {
2800  TagDecl *TagY = cast<TagDecl>(Y);
2801  return (TagX->getTagKind() == TagY->getTagKind()) ||
2802  ((TagX->getTagKind() == TTK_Struct || TagX->getTagKind() == TTK_Class ||
2803  TagX->getTagKind() == TTK_Interface) &&
2804  (TagY->getTagKind() == TTK_Struct || TagY->getTagKind() == TTK_Class ||
2805  TagY->getTagKind() == TTK_Interface));
2806  }
2807 
2808  // Functions with the same type and linkage match.
2809  // FIXME: This needs to cope with merging of prototyped/non-prototyped
2810  // functions, etc.
2811  if (FunctionDecl *FuncX = dyn_cast<FunctionDecl>(X)) {
2812  FunctionDecl *FuncY = cast<FunctionDecl>(Y);
2813  if (CXXConstructorDecl *CtorX = dyn_cast<CXXConstructorDecl>(X)) {
2814  CXXConstructorDecl *CtorY = cast<CXXConstructorDecl>(Y);
2815  if (CtorX->getInheritedConstructor() &&
2816  !isSameEntity(CtorX->getInheritedConstructor().getConstructor(),
2818  return false;
2819  }
2820  ASTContext &C = FuncX->getASTContext();
2821  if (!C.hasSameType(FuncX->getType(), FuncY->getType())) {
2822  // We can get functions with different types on the redecl chain in C++17
2823  // if they have differing exception specifications and at least one of
2824  // the excpetion specs is unresolved.
2825  // FIXME: Do we need to check for C++14 deduced return types here too?
2826  auto *XFPT = FuncX->getType()->getAs<FunctionProtoType>();
2827  auto *YFPT = FuncY->getType()->getAs<FunctionProtoType>();
2828  if (C.getLangOpts().CPlusPlus17 && XFPT && YFPT &&
2829  (isUnresolvedExceptionSpec(XFPT->getExceptionSpecType()) ||
2831  C.hasSameFunctionTypeIgnoringExceptionSpec(FuncX->getType(),
2832  FuncY->getType()))
2833  return true;
2834  return false;
2835  }
2836  return FuncX->getLinkageInternal() == FuncY->getLinkageInternal() &&
2837  hasSameOverloadableAttrs(FuncX, FuncY);
2838  }
2839 
2840  // Variables with the same type and linkage match.
2841  if (VarDecl *VarX = dyn_cast<VarDecl>(X)) {
2842  VarDecl *VarY = cast<VarDecl>(Y);
2843  if (VarX->getLinkageInternal() == VarY->getLinkageInternal()) {
2844  ASTContext &C = VarX->getASTContext();
2845  if (C.hasSameType(VarX->getType(), VarY->getType()))
2846  return true;
2847 
2848  // We can get decls with different types on the redecl chain. Eg.
2849  // template <typename T> struct S { static T Var[]; }; // #1
2850  // template <typename T> T S<T>::Var[sizeof(T)]; // #2
2851  // Only? happens when completing an incomplete array type. In this case
2852  // when comparing #1 and #2 we should go through their element type.
2853  const ArrayType *VarXTy = C.getAsArrayType(VarX->getType());
2854  const ArrayType *VarYTy = C.getAsArrayType(VarY->getType());
2855  if (!VarXTy || !VarYTy)
2856  return false;
2857  if (VarXTy->isIncompleteArrayType() || VarYTy->isIncompleteArrayType())
2858  return C.hasSameType(VarXTy->getElementType(), VarYTy->getElementType());
2859  }
2860  return false;
2861  }
2862 
2863  // Namespaces with the same name and inlinedness match.
2864  if (NamespaceDecl *NamespaceX = dyn_cast<NamespaceDecl>(X)) {
2865  NamespaceDecl *NamespaceY = cast<NamespaceDecl>(Y);
2866  return NamespaceX->isInline() == NamespaceY->isInline();
2867  }
2868 
2869  // Identical template names and kinds match if their template parameter lists
2870  // and patterns match.
2871  if (TemplateDecl *TemplateX = dyn_cast<TemplateDecl>(X)) {
2872  TemplateDecl *TemplateY = cast<TemplateDecl>(Y);
2873  return isSameEntity(TemplateX->getTemplatedDecl(),
2874  TemplateY->getTemplatedDecl()) &&
2875  isSameTemplateParameterList(TemplateX->getTemplateParameters(),
2876  TemplateY->getTemplateParameters());
2877  }
2878 
2879  // Fields with the same name and the same type match.
2880  if (FieldDecl *FDX = dyn_cast<FieldDecl>(X)) {
2881  FieldDecl *FDY = cast<FieldDecl>(Y);
2882  // FIXME: Also check the bitwidth is odr-equivalent, if any.
2883  return X->getASTContext().hasSameType(FDX->getType(), FDY->getType());
2884  }
2885 
2886  // Indirect fields with the same target field match.
2887  if (auto *IFDX = dyn_cast<IndirectFieldDecl>(X)) {
2888  auto *IFDY = cast<IndirectFieldDecl>(Y);
2889  return IFDX->getAnonField()->getCanonicalDecl() ==
2890  IFDY->getAnonField()->getCanonicalDecl();
2891  }
2892 
2893  // Enumerators with the same name match.
2894  if (isa<EnumConstantDecl>(X))
2895  // FIXME: Also check the value is odr-equivalent.
2896  return true;
2897 
2898  // Using shadow declarations with the same target match.
2899  if (UsingShadowDecl *USX = dyn_cast<UsingShadowDecl>(X)) {
2900  UsingShadowDecl *USY = cast<UsingShadowDecl>(Y);
2901  return USX->getTargetDecl() == USY->getTargetDecl();
2902  }
2903 
2904  // Using declarations with the same qualifier match. (We already know that
2905  // the name matches.)
2906  if (auto *UX = dyn_cast<UsingDecl>(X)) {
2907  auto *UY = cast<UsingDecl>(Y);
2908  return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
2909  UX->hasTypename() == UY->hasTypename() &&
2910  UX->isAccessDeclaration() == UY->isAccessDeclaration();
2911  }
2912  if (auto *UX = dyn_cast<UnresolvedUsingValueDecl>(X)) {
2913  auto *UY = cast<UnresolvedUsingValueDecl>(Y);
2914  return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
2915  UX->isAccessDeclaration() == UY->isAccessDeclaration();
2916  }
2917  if (auto *UX = dyn_cast<UnresolvedUsingTypenameDecl>(X))
2918  return isSameQualifier(
2919  UX->getQualifier(),
2920  cast<UnresolvedUsingTypenameDecl>(Y)->getQualifier());
2921 
2922  // Namespace alias definitions with the same target match.
2923  if (auto *NAX = dyn_cast<NamespaceAliasDecl>(X)) {
2924  auto *NAY = cast<NamespaceAliasDecl>(Y);
2925  return NAX->getNamespace()->Equals(NAY->getNamespace());
2926  }
2927 
2928  return false;
2929 }
2930 
2931 /// Find the context in which we should search for previous declarations when
2932 /// looking for declarations to merge.
2933 DeclContext *ASTDeclReader::getPrimaryContextForMerging(ASTReader &Reader,
2934  DeclContext *DC) {
2935  if (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(DC))
2936  return ND->getOriginalNamespace();
2937 
2938  if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(DC)) {
2939  // Try to dig out the definition.
2940  auto *DD = RD->DefinitionData;
2941  if (!DD)
2942  DD = RD->getCanonicalDecl()->DefinitionData;
2943 
2944  // If there's no definition yet, then DC's definition is added by an update
2945  // record, but we've not yet loaded that update record. In this case, we
2946  // commit to DC being the canonical definition now, and will fix this when
2947  // we load the update record.
2948  if (!DD) {
2949  DD = new (Reader.getContext()) struct CXXRecordDecl::DefinitionData(RD);
2950  RD->IsCompleteDefinition = true;
2951  RD->DefinitionData = DD;
2952  RD->getCanonicalDecl()->DefinitionData = DD;
2953 
2954  // Track that we did this horrible thing so that we can fix it later.
2955  Reader.PendingFakeDefinitionData.insert(
2956  std::make_pair(DD, ASTReader::PendingFakeDefinitionKind::Fake));
2957  }
2958 
2959  return DD->Definition;
2960  }
2961 
2962  if (EnumDecl *ED = dyn_cast<EnumDecl>(DC))
2963  return ED->getASTContext().getLangOpts().CPlusPlus? ED->getDefinition()
2964  : nullptr;
2965 
2966  // We can see the TU here only if we have no Sema object. In that case,
2967  // there's no TU scope to look in, so using the DC alone is sufficient.
2968  if (auto *TU = dyn_cast<TranslationUnitDecl>(DC))
2969  return TU;
2970 
2971  return nullptr;
2972 }
2973 
2974 ASTDeclReader::FindExistingResult::~FindExistingResult() {
2975  // Record that we had a typedef name for linkage whether or not we merge
2976  // with that declaration.
2977  if (TypedefNameForLinkage) {
2978  DeclContext *DC = New->getDeclContext()->getRedeclContext();
2979  Reader.ImportedTypedefNamesForLinkage.insert(
2980  std::make_pair(std::make_pair(DC, TypedefNameForLinkage), New));
2981  return;
2982  }
2983 
2984  if (!AddResult || Existing)
2985  return;
2986 
2987  DeclarationName Name = New->getDeclName();
2988  DeclContext *DC = New->getDeclContext()->getRedeclContext();
2990  setAnonymousDeclForMerging(Reader, New->getLexicalDeclContext(),
2991  AnonymousDeclNumber, New);
2992  } else if (DC->isTranslationUnit() &&
2993  !Reader.getContext().getLangOpts().CPlusPlus) {
2994  if (Reader.getIdResolver().tryAddTopLevelDecl(New, Name))
2995  Reader.PendingFakeLookupResults[Name.getAsIdentifierInfo()]
2996  .push_back(New);
2997  } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
2998  // Add the declaration to its redeclaration context so later merging
2999  // lookups will find it.
3000  MergeDC->makeDeclVisibleInContextImpl(New, /*Internal*/true);
3001  }
3002 }
3003 
3004 /// Find the declaration that should be merged into, given the declaration found
3005 /// by name lookup. If we're merging an anonymous declaration within a typedef,
3006 /// we need a matching typedef, and we merge with the type inside it.
3008  bool IsTypedefNameForLinkage) {
3009  if (!IsTypedefNameForLinkage)
3010  return Found;
3011 
3012  // If we found a typedef declaration that gives a name to some other
3013  // declaration, then we want that inner declaration. Declarations from
3014  // AST files are handled via ImportedTypedefNamesForLinkage.
3015  if (Found->isFromASTFile())
3016  return nullptr;
3017 
3018  if (auto *TND = dyn_cast<TypedefNameDecl>(Found))
3019  return TND->getAnonDeclWithTypedefName(/*AnyRedecl*/true);
3020 
3021  return nullptr;
3022 }
3023 
3024 NamedDecl *ASTDeclReader::getAnonymousDeclForMerging(ASTReader &Reader,
3025  DeclContext *DC,
3026  unsigned Index) {
3027  // If the lexical context has been merged, look into the now-canonical
3028  // definition.
3029  if (auto *Merged = Reader.MergedDeclContexts.lookup(DC))
3030  DC = Merged;
3031 
3032  // If we've seen this before, return the canonical declaration.
3033  auto &Previous = Reader.AnonymousDeclarationsForMerging[DC];
3034  if (Index < Previous.size() && Previous[Index])
3035  return Previous[Index];
3036 
3037  // If this is the first time, but we have parsed a declaration of the context,
3038  // build the anonymous declaration list from the parsed declaration.
3039  if (!cast<Decl>(DC)->isFromASTFile()) {
3040  numberAnonymousDeclsWithin(DC, [&](NamedDecl *ND, unsigned Number) {
3041  if (Previous.size() == Number)
3042  Previous.push_back(cast<NamedDecl>(ND->getCanonicalDecl()));
3043  else
3044  Previous[Number] = cast<NamedDecl>(ND->getCanonicalDecl());
3045  });
3046  }
3047 
3048  return Index < Previous.size() ? Previous[Index] : nullptr;
3049 }
3050 
3051 void ASTDeclReader::setAnonymousDeclForMerging(ASTReader &Reader,
3052  DeclContext *DC, unsigned Index,
3053  NamedDecl *D) {
3054  if (auto *Merged = Reader.MergedDeclContexts.lookup(DC))
3055  DC = Merged;
3056 
3057  auto &Previous = Reader.AnonymousDeclarationsForMerging[DC];
3058  if (Index >= Previous.size())
3059  Previous.resize(Index + 1);
3060  if (!Previous[Index])
3061  Previous[Index] = D;
3062 }
3063 
3064 ASTDeclReader::FindExistingResult ASTDeclReader::findExisting(NamedDecl *D) {
3065  DeclarationName Name = TypedefNameForLinkage ? TypedefNameForLinkage
3066  : D->getDeclName();
3067 
3068  if (!Name && !needsAnonymousDeclarationNumber(D)) {
3069  // Don't bother trying to find unnamed declarations that are in
3070  // unmergeable contexts.
3071  FindExistingResult Result(Reader, D, /*Existing=*/nullptr,
3072  AnonymousDeclNumber, TypedefNameForLinkage);
3073  Result.suppress();
3074  return Result;
3075  }
3076 
3078  if (TypedefNameForLinkage) {
3079  auto It = Reader.ImportedTypedefNamesForLinkage.find(
3080  std::make_pair(DC, TypedefNameForLinkage));
3081  if (It != Reader.ImportedTypedefNamesForLinkage.end())
3082  if (isSameEntity(It->second, D))
3083  return FindExistingResult(Reader, D, It->second, AnonymousDeclNumber,
3084  TypedefNameForLinkage);
3085  // Go on to check in other places in case an existing typedef name
3086  // was not imported.
3087  }
3088 
3090  // This is an anonymous declaration that we may need to merge. Look it up
3091  // in its context by number.
3092  if (auto *Existing = getAnonymousDeclForMerging(
3093  Reader, D->getLexicalDeclContext(), AnonymousDeclNumber))
3094  if (isSameEntity(Existing, D))
3095  return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3096  TypedefNameForLinkage);
3097  } else if (DC->isTranslationUnit() &&
3098  !Reader.getContext().getLangOpts().CPlusPlus) {
3099  IdentifierResolver &IdResolver = Reader.getIdResolver();
3100 
3101  // Temporarily consider the identifier to be up-to-date. We don't want to
3102  // cause additional lookups here.
3103  class UpToDateIdentifierRAII {
3104  IdentifierInfo *II;
3105  bool WasOutToDate;
3106 
3107  public:
3108  explicit UpToDateIdentifierRAII(IdentifierInfo *II)
3109  : II(II), WasOutToDate(false)
3110  {
3111  if (II) {
3112  WasOutToDate = II->isOutOfDate();
3113  if (WasOutToDate)
3114  II->setOutOfDate(false);
3115  }
3116  }
3117 
3118  ~UpToDateIdentifierRAII() {
3119  if (WasOutToDate)
3120  II->setOutOfDate(true);
3121  }
3122  } UpToDate(Name.getAsIdentifierInfo());
3123 
3124  for (IdentifierResolver::iterator I = IdResolver.begin(Name),
3125  IEnd = IdResolver.end();
3126  I != IEnd; ++I) {
3127  if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3128  if (isSameEntity(Existing, D))
3129  return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3130  TypedefNameForLinkage);
3131  }
3132  } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3133  DeclContext::lookup_result R = MergeDC->noload_lookup(Name);
3134  for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E; ++I) {
3135  if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3136  if (isSameEntity(Existing, D))
3137  return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3138  TypedefNameForLinkage);
3139  }
3140  } else {
3141  // Not in a mergeable context.
3142  return FindExistingResult(Reader);
3143  }
3144 
3145  // If this declaration is from a merged context, make a note that we need to
3146  // check that the canonical definition of that context contains the decl.
3147  //
3148  // FIXME: We should do something similar if we merge two definitions of the
3149  // same template specialization into the same CXXRecordDecl.
3150  auto MergedDCIt = Reader.MergedDeclContexts.find(D->getLexicalDeclContext());
3151  if (MergedDCIt != Reader.MergedDeclContexts.end() &&
3152  MergedDCIt->second == D->getDeclContext())
3153  Reader.PendingOdrMergeChecks.push_back(D);
3154 
3155  return FindExistingResult(Reader, D, /*Existing=*/nullptr,
3156  AnonymousDeclNumber, TypedefNameForLinkage);
3157 }
3158 
3159 template<typename DeclT>
3161  return D->RedeclLink.getLatestNotUpdated();
3162 }
3164  llvm_unreachable("getMostRecentDecl on non-redeclarable declaration");
3165 }
3166 
3168  assert(D);
3169 
3170  switch (D->getKind()) {
3171 #define ABSTRACT_DECL(TYPE)
3172 #define DECL(TYPE, BASE) \
3173  case Decl::TYPE: \
3174  return getMostRecentDeclImpl(cast<TYPE##Decl>(D));
3175 #include "clang/AST/DeclNodes.inc"
3176  }
3177  llvm_unreachable("unknown decl kind");
3178 }
3179 
3180 Decl *ASTReader::getMostRecentExistingDecl(Decl *D) {
3182 }
3183 
3184 template<typename DeclT>
3187  Decl *Previous, Decl *Canon) {
3188  D->RedeclLink.setPrevious(cast<DeclT>(Previous));
3189  D->First = cast<DeclT>(Previous)->First;
3190 }
3191 
3192 namespace clang {
3193 template<>
3196  Decl *Previous, Decl *Canon) {
3197  VarDecl *VD = static_cast<VarDecl*>(D);
3198  VarDecl *PrevVD = cast<VarDecl>(Previous);
3199  D->RedeclLink.setPrevious(PrevVD);
3200  D->First = PrevVD->First;
3201 
3202  // We should keep at most one definition on the chain.
3203  // FIXME: Cache the definition once we've found it. Building a chain with
3204  // N definitions currently takes O(N^2) time here.
3206  for (VarDecl *CurD = PrevVD; CurD; CurD = CurD->getPreviousDecl()) {
3207  if (CurD->isThisDeclarationADefinition() == VarDecl::Definition) {
3208  Reader.mergeDefinitionVisibility(CurD, VD);
3210  break;
3211  }
3212  }
3213  }
3214 }
3215 
3216 template<>
3219  Decl *Previous, Decl *Canon) {
3220  FunctionDecl *FD = static_cast<FunctionDecl*>(D);
3221  FunctionDecl *PrevFD = cast<FunctionDecl>(Previous);
3222 
3223  FD->RedeclLink.setPrevious(PrevFD);
3224  FD->First = PrevFD->First;
3225 
3226  // If the previous declaration is an inline function declaration, then this
3227  // declaration is too.
3228  if (PrevFD->IsInline != FD->IsInline) {
3229  // FIXME: [dcl.fct.spec]p4:
3230  // If a function with external linkage is declared inline in one
3231  // translation unit, it shall be declared inline in all translation
3232  // units in which it appears.
3233  //
3234  // Be careful of this case:
3235  //
3236  // module A:
3237  // template<typename T> struct X { void f(); };
3238  // template<typename T> inline void X<T>::f() {}
3239  //
3240  // module B instantiates the declaration of X<int>::f
3241  // module C instantiates the definition of X<int>::f
3242  //
3243  // If module B and C are merged, we do not have a violation of this rule.
3244  FD->IsInline = true;
3245  }
3246 
3247  // If we need to propagate an exception specification along the redecl
3248  // chain, make a note of that so that we can do so later.
3249  auto *FPT = FD->getType()->getAs<FunctionProtoType>();
3250  auto *PrevFPT = PrevFD->getType()->getAs<FunctionProtoType>();
3251  if (FPT && PrevFPT) {
3252  bool IsUnresolved = isUnresolvedExceptionSpec(FPT->getExceptionSpecType());
3253  bool WasUnresolved =
3255  if (IsUnresolved != WasUnresolved)
3256  Reader.PendingExceptionSpecUpdates.insert(
3257  std::make_pair(Canon, IsUnresolved ? PrevFD : FD));
3258  }
3259 }
3260 } // end namespace clang
3261 
3263  llvm_unreachable("attachPreviousDecl on non-redeclarable declaration");
3264 }
3265 
3266 /// Inherit the default template argument from \p From to \p To. Returns
3267 /// \c false if there is no default template for \p From.
3268 template <typename ParmDecl>
3269 static bool inheritDefaultTemplateArgument(ASTContext &Context, ParmDecl *From,
3270  Decl *ToD) {
3271  auto *To = cast<ParmDecl>(ToD);
3272  if (!From->hasDefaultArgument())
3273  return false;
3274  To->setInheritedDefaultArgument(Context, From);
3275  return true;
3276 }
3277 
3279  TemplateDecl *From,
3280  TemplateDecl *To) {
3281  auto *FromTP = From->getTemplateParameters();
3282  auto *ToTP = To->getTemplateParameters();
3283  assert(FromTP->size() == ToTP->size() && "merged mismatched templates?");
3284 
3285  for (unsigned I = 0, N = FromTP->size(); I != N; ++I) {
3286  NamedDecl *FromParam = FromTP->getParam(N - I - 1);
3287  if (FromParam->isParameterPack())
3288  continue;
3289  NamedDecl *ToParam = ToTP->getParam(N - I - 1);
3290 
3291  if (auto *FTTP = dyn_cast<TemplateTypeParmDecl>(FromParam)) {
3292  if (!inheritDefaultTemplateArgument(Context, FTTP, ToParam))
3293  break;
3294  } else if (auto *FNTTP = dyn_cast<NonTypeTemplateParmDecl>(FromParam)) {
3295  if (!inheritDefaultTemplateArgument(Context, FNTTP, ToParam))
3296  break;
3297  } else {
3299  Context, cast<TemplateTemplateParmDecl>(FromParam), ToParam))
3300  break;
3301  }
3302  }
3303 }
3304 
3306  Decl *Previous, Decl *Canon) {
3307  assert(D && Previous);
3308 
3309  switch (D->getKind()) {
3310 #define ABSTRACT_DECL(TYPE)
3311 #define DECL(TYPE, BASE) \
3312  case Decl::TYPE: \
3313  attachPreviousDeclImpl(Reader, cast<TYPE##Decl>(D), Previous, Canon); \
3314  break;
3315 #include "clang/AST/DeclNodes.inc"
3316  }
3317 
3318  // If the declaration was visible in one module, a redeclaration of it in
3319  // another module remains visible even if it wouldn't be visible by itself.
3320  //
3321  // FIXME: In this case, the declaration should only be visible if a module
3322  // that makes it visible has been imported.
3323  D->IdentifierNamespace |=
3324  Previous->IdentifierNamespace &
3326 
3327  // If the declaration declares a template, it may inherit default arguments
3328  // from the previous declaration.
3329  if (TemplateDecl *TD = dyn_cast<TemplateDecl>(D))
3331  cast<TemplateDecl>(Previous), TD);
3332 }
3333 
3334 template<typename DeclT>
3336  D->RedeclLink.setLatest(cast<DeclT>(Latest));
3337 }
3339  llvm_unreachable("attachLatestDecl on non-redeclarable declaration");
3340 }
3341 
3343  assert(D && Latest);
3344 
3345  switch (D->getKind()) {
3346 #define ABSTRACT_DECL(TYPE)
3347 #define DECL(TYPE, BASE) \
3348  case Decl::TYPE: \
3349  attachLatestDeclImpl(cast<TYPE##Decl>(D), Latest); \
3350  break;
3351 #include "clang/AST/DeclNodes.inc"
3352  }
3353 }
3354 
3355 template<typename DeclT>
3357  D->RedeclLink.markIncomplete();
3358 }
3360  llvm_unreachable("markIncompleteDeclChain on non-redeclarable declaration");
3361 }
3362 
3363 void ASTReader::markIncompleteDeclChain(Decl *D) {
3364  switch (D->getKind()) {
3365 #define ABSTRACT_DECL(TYPE)
3366 #define DECL(TYPE, BASE) \
3367  case Decl::TYPE: \
3368  ASTDeclReader::markIncompleteDeclChainImpl(cast<TYPE##Decl>(D)); \
3369  break;
3370 #include "clang/AST/DeclNodes.inc"
3371  }
3372 }
3373 
3374 /// \brief Read the declaration at the given offset from the AST file.
3375 Decl *ASTReader::ReadDeclRecord(DeclID ID) {
3376  unsigned Index = ID - NUM_PREDEF_DECL_IDS;
3377  SourceLocation DeclLoc;
3378  RecordLocation Loc = DeclCursorForID(ID, DeclLoc);
3379  llvm::BitstreamCursor &DeclsCursor = Loc.F->DeclsCursor;
3380  // Keep track of where we are in the stream, then jump back there
3381  // after reading this declaration.
3382  SavedStreamPosition SavedPosition(DeclsCursor);
3383 
3384  ReadingKindTracker ReadingKind(Read_Decl, *this);
3385 
3386  // Note that we are loading a declaration record.
3387  Deserializing ADecl(this);
3388 
3389  DeclsCursor.JumpToBit(Loc.Offset);
3390  ASTRecordReader Record(*this, *Loc.F);
3391  ASTDeclReader Reader(*this, Record, Loc, ID, DeclLoc);
3392  unsigned Code = DeclsCursor.ReadCode();
3393 
3394  ASTContext &Context = getContext();
3395  Decl *D = nullptr;
3396  switch ((DeclCode)Record.readRecord(DeclsCursor, Code)) {
3397  case DECL_CONTEXT_LEXICAL:
3398  case DECL_CONTEXT_VISIBLE:
3399  llvm_unreachable("Record cannot be de-serialized with ReadDeclRecord");
3400  case DECL_TYPEDEF:
3401  D = TypedefDecl::CreateDeserialized(Context, ID);
3402  break;
3403  case DECL_TYPEALIAS:
3404  D = TypeAliasDecl::CreateDeserialized(Context, ID);
3405  break;
3406  case DECL_ENUM:
3407  D = EnumDecl::CreateDeserialized(Context, ID);
3408  break;
3409  case DECL_RECORD:
3410  D = RecordDecl::CreateDeserialized(Context, ID);
3411  break;
3412  case DECL_ENUM_CONSTANT:
3413  D = EnumConstantDecl::CreateDeserialized(Context, ID);
3414  break;
3415  case DECL_FUNCTION:
3416  D = FunctionDecl::CreateDeserialized(Context, ID);
3417  break;
3418  case DECL_LINKAGE_SPEC:
3419  D = LinkageSpecDecl::CreateDeserialized(Context, ID);
3420  break;
3421  case DECL_EXPORT:
3422  D = ExportDecl::CreateDeserialized(Context, ID);
3423  break;
3424  case DECL_LABEL:
3425  D = LabelDecl::CreateDeserialized(Context, ID);
3426  break;
3427  case DECL_NAMESPACE:
3428  D = NamespaceDecl::CreateDeserialized(Context, ID);
3429  break;
3430  case DECL_NAMESPACE_ALIAS:
3431  D = NamespaceAliasDecl::CreateDeserialized(Context, ID);
3432  break;
3433  case DECL_USING:
3434  D = UsingDecl::CreateDeserialized(Context, ID);
3435  break;
3436  case DECL_USING_PACK:
3437  D = UsingPackDecl::CreateDeserialized(Context, ID, Record.readInt());
3438  break;
3439  case DECL_USING_SHADOW:
3440  D = UsingShadowDecl::CreateDeserialized(Context, ID);
3441  break;
3444  break;
3445  case DECL_USING_DIRECTIVE:
3446  D = UsingDirectiveDecl::CreateDeserialized(Context, ID);
3447  break;
3450  break;
3453  break;
3454  case DECL_CXX_RECORD:
3455  D = CXXRecordDecl::CreateDeserialized(Context, ID);
3456  break;
3459  break;
3460  case DECL_CXX_METHOD:
3461  D = CXXMethodDecl::CreateDeserialized(Context, ID);
3462  break;
3463  case DECL_CXX_CONSTRUCTOR:
3464  D = CXXConstructorDecl::CreateDeserialized(Context, ID, false);
3465  break;
3467  D = CXXConstructorDecl::CreateDeserialized(Context, ID, true);
3468  break;
3469  case DECL_CXX_DESTRUCTOR:
3470  D = CXXDestructorDecl::CreateDeserialized(Context, ID);
3471  break;
3472  case DECL_CXX_CONVERSION:
3473  D = CXXConversionDecl::CreateDeserialized(Context, ID);
3474  break;
3475  case DECL_ACCESS_SPEC:
3476  D = AccessSpecDecl::CreateDeserialized(Context, ID);
3477  break;
3478  case DECL_FRIEND:
3479  D = FriendDecl::CreateDeserialized(Context, ID, Record.readInt());
3480  break;
3481  case DECL_FRIEND_TEMPLATE:
3482  D = FriendTemplateDecl::CreateDeserialized(Context, ID);
3483  break;
3484  case DECL_CLASS_TEMPLATE:
3485  D = ClassTemplateDecl::CreateDeserialized(Context, ID);
3486  break;
3489  break;
3492  break;
3493  case DECL_VAR_TEMPLATE:
3494  D = VarTemplateDecl::CreateDeserialized(Context, ID);
3495  break;
3498  break;
3501  break;
3504  break;
3507  break;
3510  break;
3513  break;
3516  Record.readInt());
3517  break;
3520  break;
3523  Record.readInt());
3524  break;
3527  break;
3528  case DECL_STATIC_ASSERT:
3529  D = StaticAssertDecl::CreateDeserialized(Context, ID);
3530  break;
3531  case DECL_OBJC_METHOD:
3532  D = ObjCMethodDecl::CreateDeserialized(Context, ID);
3533  break;
3534  case DECL_OBJC_INTERFACE:
3535  D = ObjCInterfaceDecl::CreateDeserialized(Context, ID);
3536  break;
3537  case DECL_OBJC_IVAR:
3538  D = ObjCIvarDecl::CreateDeserialized(Context, ID);
3539  break;
3540  case DECL_OBJC_PROTOCOL:
3541  D = ObjCProtocolDecl::CreateDeserialized(Context, ID);
3542  break;
3544  D = ObjCAtDefsFieldDecl::CreateDeserialized(Context, ID);
3545  break;
3546  case DECL_OBJC_CATEGORY:
3547  D = ObjCCategoryDecl::CreateDeserialized(Context, ID);
3548  break;
3551  break;
3554  break;
3557  break;
3558  case DECL_OBJC_PROPERTY:
3559  D = ObjCPropertyDecl::CreateDeserialized(Context, ID);
3560  break;
3563  break;
3564  case DECL_FIELD:
3565  D = FieldDecl::CreateDeserialized(Context, ID);
3566  break;
3567  case DECL_INDIRECTFIELD:
3568  D = IndirectFieldDecl::CreateDeserialized(Context, ID);
3569  break;
3570  case DECL_VAR:
3571  D = VarDecl::CreateDeserialized(Context, ID);
3572  break;
3573  case DECL_IMPLICIT_PARAM:
3574  D = ImplicitParamDecl::CreateDeserialized(Context, ID);
3575  break;
3576  case DECL_PARM_VAR:
3577  D = ParmVarDecl::CreateDeserialized(Context, ID);
3578  break;
3579  case DECL_DECOMPOSITION:
3580  D = DecompositionDecl::CreateDeserialized(Context, ID, Record.readInt());
3581  break;
3582  case DECL_BINDING:
3583  D = BindingDecl::CreateDeserialized(Context, ID);
3584  break;
3585  case DECL_FILE_SCOPE_ASM:
3586  D = FileScopeAsmDecl::CreateDeserialized(Context, ID);
3587  break;
3588  case DECL_BLOCK:
3589  D = BlockDecl::CreateDeserialized(Context, ID);
3590  break;
3591  case DECL_MS_PROPERTY:
3592  D = MSPropertyDecl::CreateDeserialized(Context, ID);
3593  break;
3594  case DECL_CAPTURED:
3595  D = CapturedDecl::CreateDeserialized(Context, ID, Record.readInt());
3596  break;
3598  Error("attempt to read a C++ base-specifier record as a declaration");
3599  return nullptr;
3601  Error("attempt to read a C++ ctor initializer record as a declaration");
3602  return nullptr;
3603  case DECL_IMPORT:
3604  // Note: last entry of the ImportDecl record is the number of stored source
3605  // locations.
3606  D = ImportDecl::CreateDeserialized(Context, ID, Record.back());
3607  break;
3609  D = OMPThreadPrivateDecl::CreateDeserialized(Context, ID, Record.readInt());
3610  break;
3613  break;
3614  case DECL_OMP_CAPTUREDEXPR:
3615  D = OMPCapturedExprDecl::CreateDeserialized(Context, ID);
3616  break;
3617  case DECL_PRAGMA_COMMENT:
3618  D = PragmaCommentDecl::CreateDeserialized(Context, ID, Record.readInt());
3619  break;
3622  Record.readInt());
3623  break;
3624  case DECL_EMPTY:
3625  D = EmptyDecl::CreateDeserialized(Context, ID);
3626  break;
3627  case DECL_OBJC_TYPE_PARAM:
3628  D = ObjCTypeParamDecl::CreateDeserialized(Context, ID);
3629  break;
3630  }
3631 
3632  assert(D && "Unknown declaration reading AST file");
3633  LoadedDecl(Index, D);
3634  // Set the DeclContext before doing any deserialization, to make sure internal
3635  // calls to Decl::getASTContext() by Decl's methods will find the
3636  // TranslationUnitDecl without crashing.
3637  D->setDeclContext(Context.getTranslationUnitDecl());
3638  Reader.Visit(D);
3639 
3640  // If this declaration is also a declaration context, get the
3641  // offsets for its tables of lexical and visible declarations.
3642  if (DeclContext *DC = dyn_cast<DeclContext>(D)) {
3643  std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
3644  if (Offsets.first &&
3645  ReadLexicalDeclContextStorage(*Loc.F, DeclsCursor, Offsets.first, DC))
3646  return nullptr;
3647  if (Offsets.second &&
3648  ReadVisibleDeclContextStorage(*Loc.F, DeclsCursor, Offsets.second, ID))
3649  return nullptr;
3650  }
3651  assert(Record.getIdx() == Record.size());
3652 
3653  // Load any relevant update records.
3654  PendingUpdateRecords.push_back(
3655  PendingUpdateRecord(ID, D, /*JustLoaded=*/true));
3656 
3657  // Load the categories after recursive loading is finished.
3658  if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(D))
3659  // If we already have a definition when deserializing the ObjCInterfaceDecl,
3660  // we put the Decl in PendingDefinitions so we can pull the categories here.
3661  if (Class->isThisDeclarationADefinition() ||
3662  PendingDefinitions.count(Class))
3663  loadObjCCategories(ID, Class);
3664 
3665  // If we have deserialized a declaration that has a definition the
3666  // AST consumer might need to know about, queue it.
3667  // We don't pass it to the consumer immediately because we may be in recursive
3668  // loading, and some declarations may still be initializing.
3669  PotentiallyInterestingDecls.push_back(
3670  InterestingDecl(D, Reader.hasPendingBody()));
3671 
3672  return D;
3673 }
3674 
3675 void ASTReader::PassInterestingDeclsToConsumer() {
3676  assert(Consumer);
3677 
3678  if (PassingDeclsToConsumer)
3679  return;
3680 
3681  // Guard variable to avoid recursively redoing the process of passing
3682  // decls to consumer.
3683  SaveAndRestore<bool> GuardPassingDeclsToConsumer(PassingDeclsToConsumer,
3684  true);
3685 
3686  // Ensure that we've loaded all potentially-interesting declarations
3687  // that need to be eagerly loaded.
3688  for (auto ID : EagerlyDeserializedDecls)
3689  GetDecl(ID);
3690  EagerlyDeserializedDecls.clear();
3691 
3692  while (!PotentiallyInterestingDecls.empty()) {
3693  InterestingDecl D = PotentiallyInterestingDecls.front();
3694  PotentiallyInterestingDecls.pop_front();
3695  if (isConsumerInterestedIn(getContext(), D.getDecl(), D.hasPendingBody()))
3696  PassInterestingDeclToConsumer(D.getDecl());
3697  }
3698 }
3699 
3700 void ASTReader::loadDeclUpdateRecords(PendingUpdateRecord &Record) {
3701  // The declaration may have been modified by files later in the chain.
3702  // If this is the case, read the record containing the updates from each file
3703  // and pass it to ASTDeclReader to make the modifications.
3704  serialization::GlobalDeclID ID = Record.ID;
3705  Decl *D = Record.D;
3706  ProcessingUpdatesRAIIObj ProcessingUpdates(*this);
3707  DeclUpdateOffsetsMap::iterator UpdI = DeclUpdateOffsets.find(ID);
3708 
3709  llvm::SmallVector<serialization::DeclID, 8> PendingLazySpecializationIDs;
3710 
3711  if (UpdI != DeclUpdateOffsets.end()) {
3712  auto UpdateOffsets = std::move(UpdI->second);
3713  DeclUpdateOffsets.erase(UpdI);
3714 
3715  // Check if this decl was interesting to the consumer. If we just loaded
3716  // the declaration, then we know it was interesting and we skip the call
3717  // to isConsumerInterestedIn because it is unsafe to call in the
3718  // current ASTReader state.
3719  bool WasInteresting =
3720  Record.JustLoaded || isConsumerInterestedIn(getContext(), D, false);
3721  for (auto &FileAndOffset : UpdateOffsets) {
3722  ModuleFile *F = FileAndOffset.first;
3723  uint64_t Offset = FileAndOffset.second;
3724  llvm::BitstreamCursor &Cursor = F->DeclsCursor;
3725  SavedStreamPosition SavedPosition(Cursor);
3726  Cursor.JumpToBit(Offset);
3727  unsigned Code = Cursor.ReadCode();
3728  ASTRecordReader Record(*this, *F);
3729  unsigned RecCode = Record.readRecord(Cursor, Code);
3730  (void)RecCode;
3731  assert(RecCode == DECL_UPDATES && "Expected DECL_UPDATES record!");
3732 
3733  ASTDeclReader Reader(*this, Record, RecordLocation(F, Offset), ID,
3734  SourceLocation());
3735  Reader.UpdateDecl(D, PendingLazySpecializationIDs);
3736 
3737  // We might have made this declaration interesting. If so, remember that
3738  // we need to hand it off to the consumer.
3739  if (!WasInteresting &&
3740  isConsumerInterestedIn(getContext(), D, Reader.hasPendingBody())) {
3741  PotentiallyInterestingDecls.push_back(
3742  InterestingDecl(D, Reader.hasPendingBody()));
3743  WasInteresting = true;
3744  }
3745  }
3746  }
3747  // Add the lazy specializations to the template.
3748  assert((PendingLazySpecializationIDs.empty() || isa<ClassTemplateDecl>(D) ||
3749  isa<FunctionTemplateDecl>(D) || isa<VarTemplateDecl>(D)) &&
3750  "Must not have pending specializations");
3751  if (auto *CTD = dyn_cast<ClassTemplateDecl>(D))
3752  ASTDeclReader::AddLazySpecializations(CTD, PendingLazySpecializationIDs);
3753  else if (auto *FTD = dyn_cast<FunctionTemplateDecl>(D))
3754  ASTDeclReader::AddLazySpecializations(FTD, PendingLazySpecializationIDs);
3755  else if (auto *VTD = dyn_cast<VarTemplateDecl>(D))
3756  ASTDeclReader::AddLazySpecializations(VTD, PendingLazySpecializationIDs);
3757  PendingLazySpecializationIDs.clear();
3758 
3759  // Load the pending visible updates for this decl context, if it has any.
3760  auto I = PendingVisibleUpdates.find(ID);
3761  if (I != PendingVisibleUpdates.end()) {
3762  auto VisibleUpdates = std::move(I->second);
3763  PendingVisibleUpdates.erase(I);
3764 
3765  auto *DC = cast<DeclContext>(D)->getPrimaryContext();
3766  for (const PendingVisibleUpdate &Update : VisibleUpdates)
3767  Lookups[DC].Table.add(
3768  Update.Mod, Update.Data,
3770  DC->setHasExternalVisibleStorage(true);
3771  }
3772 }
3773 
3774 void ASTReader::loadPendingDeclChain(Decl *FirstLocal, uint64_t LocalOffset) {
3775  // Attach FirstLocal to the end of the decl chain.
3776  Decl *CanonDecl = FirstLocal->getCanonicalDecl();
3777  if (FirstLocal != CanonDecl) {
3778  Decl *PrevMostRecent = ASTDeclReader::getMostRecentDecl(CanonDecl);
3780  *this, FirstLocal, PrevMostRecent ? PrevMostRecent : CanonDecl,
3781  CanonDecl);
3782  }
3783 
3784  if (!LocalOffset) {
3785  ASTDeclReader::attachLatestDecl(CanonDecl, FirstLocal);
3786  return;
3787  }
3788 
3789  // Load the list of other redeclarations from this module file.
3790  ModuleFile *M = getOwningModuleFile(FirstLocal);
3791  assert(M && "imported decl from no module file");
3792 
3793  llvm::BitstreamCursor &Cursor = M->DeclsCursor;
3794  SavedStreamPosition SavedPosition(Cursor);
3795  Cursor.JumpToBit(LocalOffset);
3796 
3797  RecordData Record;
3798  unsigned Code = Cursor.ReadCode();
3799  unsigned RecCode = Cursor.readRecord(Code, Record);
3800  (void)RecCode;
3801  assert(RecCode == LOCAL_REDECLARATIONS && "expected LOCAL_REDECLARATIONS record!");
3802 
3803  // FIXME: We have several different dispatches on decl kind here; maybe
3804  // we should instead generate one loop per kind and dispatch up-front?
3805  Decl *MostRecent = FirstLocal;
3806  for (unsigned I = 0, N = Record.size(); I != N; ++I) {
3807  auto *D = GetLocalDecl(*M, Record[N - I - 1]);
3808  ASTDeclReader::attachPreviousDecl(*this, D, MostRecent, CanonDecl);
3809  MostRecent = D;
3810  }
3811  ASTDeclReader::attachLatestDecl(CanonDecl, MostRecent);
3812 }
3813 
3814 namespace {
3815  /// \brief Given an ObjC interface, goes through the modules and links to the
3816  /// interface all the categories for it.
3817  class ObjCCategoriesVisitor {
3818  ASTReader &Reader;
3819  ObjCInterfaceDecl *Interface;
3820  llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized;
3821  ObjCCategoryDecl *Tail;
3822  llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap;
3823  serialization::GlobalDeclID InterfaceID;
3824  unsigned PreviousGeneration;
3825 
3826  void add(ObjCCategoryDecl *Cat) {
3827  // Only process each category once.
3828  if (!Deserialized.erase(Cat))
3829  return;
3830 
3831  // Check for duplicate categories.
3832  if (Cat->getDeclName()) {
3833  ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];
3834  if (Existing &&
3835  Reader.getOwningModuleFile(Existing)
3836  != Reader.getOwningModuleFile(Cat)) {
3837  // FIXME: We should not warn for duplicates in diamond:
3838  //
3839  // MT //
3840  // / \ //
3841  // ML MR //
3842  // \ / //
3843  // MB //
3844  //
3845  // If there are duplicates in ML/MR, there will be warning when
3846  // creating MB *and* when importing MB. We should not warn when
3847  // importing.
3848  Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def)
3849  << Interface->getDeclName() << Cat->getDeclName();
3850  Reader.Diag(Existing->getLocation(), diag::note_previous_definition);
3851  } else if (!Existing) {
3852  // Record this category.
3853  Existing = Cat;
3854  }
3855  }
3856 
3857  // Add this category to the end of the chain.
3858  if (Tail)
3860  else
3861  Interface->setCategoryListRaw(Cat);
3862  Tail = Cat;
3863  }
3864 
3865  public:
3866  ObjCCategoriesVisitor(ASTReader &Reader,
3867  ObjCInterfaceDecl *Interface,
3868  llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized,
3869  serialization::GlobalDeclID InterfaceID,
3870  unsigned PreviousGeneration)
3871  : Reader(Reader), Interface(Interface), Deserialized(Deserialized),
3872  Tail(nullptr), InterfaceID(InterfaceID),
3873  PreviousGeneration(PreviousGeneration)
3874  {
3875  // Populate the name -> category map with the set of known categories.
3876  for (auto *Cat : Interface->known_categories()) {
3877  if (Cat->getDeclName())
3878  NameCategoryMap[Cat->getDeclName()] = Cat;
3879 
3880  // Keep track of the tail of the category list.
3881  Tail = Cat;
3882  }
3883  }
3884 
3885  bool operator()(ModuleFile &M) {
3886  // If we've loaded all of the category information we care about from
3887  // this module file, we're done.
3888  if (M.Generation <= PreviousGeneration)
3889  return true;
3890 
3891  // Map global ID of the definition down to the local ID used in this
3892  // module file. If there is no such mapping, we'll find nothing here
3893  // (or in any module it imports).
3894  DeclID LocalID = Reader.mapGlobalIDToModuleFileGlobalID(M, InterfaceID);
3895  if (!LocalID)
3896  return true;
3897 
3898  // Perform a binary search to find the local redeclarations for this
3899  // declaration (if any).
3900  const ObjCCategoriesInfo Compare = { LocalID, 0 };
3901  const ObjCCategoriesInfo *Result
3902  = std::lower_bound(M.ObjCCategoriesMap,
3904  Compare);
3905  if (Result == M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap ||
3906  Result->DefinitionID != LocalID) {
3907  // We didn't find anything. If the class definition is in this module
3908  // file, then the module files it depends on cannot have any categories,
3909  // so suppress further lookup.
3910  return Reader.isDeclIDFromModule(InterfaceID, M);
3911  }
3912 
3913  // We found something. Dig out all of the categories.
3914  unsigned Offset = Result->Offset;
3915  unsigned N = M.ObjCCategories[Offset];
3916  M.ObjCCategories[Offset++] = 0; // Don't try to deserialize again
3917  for (unsigned I = 0; I != N; ++I)
3918  add(cast_or_null<ObjCCategoryDecl>(
3919  Reader.GetLocalDecl(M, M.ObjCCategories[Offset++])));
3920  return true;
3921  }
3922  };
3923 } // end anonymous namespace
3924 
3925 void ASTReader::loadObjCCategories(serialization::GlobalDeclID ID,
3926  ObjCInterfaceDecl *D,
3927  unsigned PreviousGeneration) {
3928  ObjCCategoriesVisitor Visitor(*this, D, CategoriesDeserialized, ID,
3929  PreviousGeneration);
3930  ModuleMgr.visit(Visitor);
3931 }
3932 
3933 template<typename DeclT, typename Fn>
3934 static void forAllLaterRedecls(DeclT *D, Fn F) {
3935  F(D);
3936 
3937  // Check whether we've already merged D into its redeclaration chain.
3938  // MostRecent may or may not be nullptr if D has not been merged. If
3939  // not, walk the merged redecl chain and see if it's there.
3940  auto *MostRecent = D->getMostRecentDecl();
3941  bool Found = false;
3942  for (auto *Redecl = MostRecent; Redecl && !Found;
3943  Redecl = Redecl->getPreviousDecl())
3944  Found = (Redecl == D);
3945 
3946  // If this declaration is merged, apply the functor to all later decls.
3947  if (Found) {
3948  for (auto *Redecl = MostRecent; Redecl != D;
3949  Redecl = Redecl->getPreviousDecl())
3950  F(Redecl);
3951  }
3952 }
3953 
3955  llvm::SmallVectorImpl<serialization::DeclID> &PendingLazySpecializationIDs) {
3956  while (Record.getIdx() < Record.size()) {
3957  switch ((DeclUpdateKind)Record.readInt()) {
3959  auto *RD = cast<CXXRecordDecl>(D);
3960  // FIXME: If we also have an update record for instantiating the
3961  // definition of D, we need that to happen before we get here.
3962  Decl *MD = Record.readDecl();
3963  assert(MD && "couldn't read decl from update record");
3964  // FIXME: We should call addHiddenDecl instead, to add the member
3965  // to its DeclContext.
3966  RD->addedMember(MD);
3967  break;
3968  }
3969 
3971  // It will be added to the template's lazy specialization set.
3972  PendingLazySpecializationIDs.push_back(ReadDeclID());
3973  break;
3974 
3976  NamespaceDecl *Anon = ReadDeclAs<NamespaceDecl>();
3977 
3978  // Each module has its own anonymous namespace, which is disjoint from
3979  // any other module's anonymous namespaces, so don't attach the anonymous
3980  // namespace at all.
3981  if (!Record.isModule()) {
3982  if (TranslationUnitDecl *TU = dyn_cast<TranslationUnitDecl>(D))
3983  TU->setAnonymousNamespace(Anon);
3984  else
3985  cast<NamespaceDecl>(D)->setAnonymousNamespace(Anon);
3986  }
3987  break;
3988  }
3989 
3991  VarDecl *VD = cast<VarDecl>(D);
3992  VD->NonParmVarDeclBits.IsInline = Record.readInt();
3993  VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
3994  uint64_t Val = Record.readInt();
3995  if (Val && !VD->getInit()) {
3996  VD->setInit(Record.readExpr());
3997  if (Val > 1) { // IsInitKnownICE = 1, IsInitNotICE = 2, IsInitICE = 3
3998  EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
3999  Eval->CheckedICE = true;
4000  Eval->IsICE = Val == 3;
4001  }
4002  }
4003  break;
4004  }
4005 
4007  SourceLocation POI = Record.readSourceLocation();
4008  if (VarTemplateSpecializationDecl *VTSD =
4009  dyn_cast<VarTemplateSpecializationDecl>(D)) {
4010  VTSD->setPointOfInstantiation(POI);
4011  } else if (auto *VD = dyn_cast<VarDecl>(D)) {
4012  VD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
4013  } else {
4014  auto *FD = cast<FunctionDecl>(D);
4015  if (auto *FTSInfo = FD->TemplateOrSpecialization
4016  .dyn_cast<FunctionTemplateSpecializationInfo *>())
4017  FTSInfo->setPointOfInstantiation(POI);
4018  else
4019  FD->TemplateOrSpecialization.get<MemberSpecializationInfo *>()
4020  ->setPointOfInstantiation(POI);
4021  }
4022  break;
4023  }
4024 
4026  auto Param = cast<ParmVarDecl>(D);
4027 
4028  // We have to read the default argument regardless of whether we use it
4029  // so that hypothetical further update records aren't messed up.
4030  // TODO: Add a function to skip over the next expr record.
4031  auto DefaultArg = Record.readExpr();
4032 
4033  // Only apply the update if the parameter still has an uninstantiated
4034  // default argument.
4035  if (Param->hasUninstantiatedDefaultArg())
4036  Param->setDefaultArg(DefaultArg);
4037  break;
4038  }
4039 
4041  auto FD = cast<FieldDecl>(D);
4042  auto DefaultInit = Record.readExpr();
4043 
4044  // Only apply the update if the field still has an uninstantiated
4045  // default member initializer.
4046  if (FD->hasInClassInitializer() && !FD->getInClassInitializer()) {
4047  if (DefaultInit)
4048  FD->setInClassInitializer(DefaultInit);
4049  else
4050  // Instantiation failed. We can get here if we serialized an AST for
4051  // an invalid program.
4052  FD->removeInClassInitializer();
4053  }
4054  break;
4055  }
4056 
4058  FunctionDecl *FD = cast<FunctionDecl>(D);
4059  if (Reader.PendingBodies[FD]) {
4060  // FIXME: Maybe check for ODR violations.
4061  // It's safe to stop now because this update record is always last.
4062  return;
4063  }
4064 
4065  if (Record.readInt()) {
4066  // Maintain AST consistency: any later redeclarations of this function
4067  // are inline if this one is. (We might have merged another declaration
4068  // into this one.)
4069  forAllLaterRedecls(FD, [](FunctionDecl *FD) {
4070  FD->setImplicitlyInline();
4071  });
4072  }
4073  FD->setInnerLocStart(ReadSourceLocation());
4074  ReadFunctionDefinition(FD);
4075  assert(Record.getIdx() == Record.size() && "lazy body must be last");
4076  break;
4077  }
4078 
4080  auto *RD = cast<CXXRecordDecl>(D);
4081  auto *OldDD = RD->getCanonicalDecl()->DefinitionData;
4082  bool HadRealDefinition =
4083  OldDD && (OldDD->Definition != RD ||
4084  !Reader.PendingFakeDefinitionData.count(OldDD));
4085  ReadCXXRecordDefinition(RD, /*Update*/true);
4086 
4087  // Visible update is handled separately.
4088  uint64_t LexicalOffset = ReadLocalOffset();
4089  if (!HadRealDefinition && LexicalOffset) {
4090  Record.readLexicalDeclContextStorage(LexicalOffset, RD);
4091  Reader.PendingFakeDefinitionData.erase(OldDD);
4092  }
4093 
4094  auto TSK = (TemplateSpecializationKind)Record.readInt();
4095  SourceLocation POI = ReadSourceLocation();
4096  if (MemberSpecializationInfo *MSInfo =
4097  RD->getMemberSpecializationInfo()) {
4098  MSInfo->setTemplateSpecializationKind(TSK);
4099  MSInfo->setPointOfInstantiation(POI);
4100  } else {
4102  cast<ClassTemplateSpecializationDecl>(RD);
4103  Spec->setTemplateSpecializationKind(TSK);
4104  Spec->setPointOfInstantiation(POI);
4105 
4106  if (Record.readInt()) {
4107  auto PartialSpec =
4108  ReadDeclAs<ClassTemplatePartialSpecializationDecl>();
4110  Record.readTemplateArgumentList(TemplArgs);
4111  auto *TemplArgList = TemplateArgumentList::CreateCopy(
4112  Reader.getContext(), TemplArgs);
4113 
4114  // FIXME: If we already have a partial specialization set,
4115  // check that it matches.
4116  if (!Spec->getSpecializedTemplateOrPartial()
4118  Spec->setInstantiationOf(PartialSpec, TemplArgList);
4119  }
4120  }
4121 
4122  RD->setTagKind((TagTypeKind)Record.readInt());
4123  RD->setLocation(ReadSourceLocation());
4124  RD->setLocStart(ReadSourceLocation());
4125  RD->setBraceRange(ReadSourceRange());
4126 
4127  if (Record.readInt()) {
4128  AttrVec Attrs;
4129  Record.readAttributes(Attrs);
4130  // If the declaration already has attributes, we assume that some other
4131  // AST file already loaded them.
4132  if (!D->hasAttrs())
4133  D->setAttrsImpl(Attrs, Reader.getContext());
4134  }
4135  break;
4136  }
4137 
4139  // Set the 'operator delete' directly to avoid emitting another update
4140  // record.
4141  auto *Del = ReadDeclAs<FunctionDecl>();
4142  auto *First = cast<CXXDestructorDecl>(D->getCanonicalDecl());
4143  auto *ThisArg = Record.readExpr();
4144  // FIXME: Check consistency if we have an old and new operator delete.
4145  if (!First->OperatorDelete) {
4146  First->OperatorDelete = Del;
4147  First->OperatorDeleteThisArg = ThisArg;
4148  }
4149  break;
4150  }
4151 
4154  SmallVector<QualType, 8> ExceptionStorage;
4155  Record.readExceptionSpec(ExceptionStorage, ESI);
4156 
4157  // Update this declaration's exception specification, if needed.
4158  auto *FD = cast<FunctionDecl>(D);
4159  auto *FPT = FD->getType()->castAs<FunctionProtoType>();
4160  // FIXME: If the exception specification is already present, check that it
4161  // matches.
4162  if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) {
4163  FD->setType(Reader.getContext().getFunctionType(
4164  FPT->getReturnType(), FPT->getParamTypes(),
4165  FPT->getExtProtoInfo().withExceptionSpec(ESI)));
4166 
4167  // When we get to the end of deserializing, see if there are other decls
4168  // that we need to propagate this exception specification onto.
4169  Reader.PendingExceptionSpecUpdates.insert(
4170  std::make_pair(FD->getCanonicalDecl(), FD));
4171  }
4172  break;
4173  }
4174 
4176  // FIXME: Also do this when merging redecls.
4177  QualType DeducedResultType = Record.readType();
4178  for (auto *Redecl : merged_redecls(D)) {
4179  // FIXME: If the return type is already deduced, check that it matches.
4180  FunctionDecl *FD = cast<FunctionDecl>(Redecl);
4182  DeducedResultType);
4183  }
4184  break;
4185  }
4186 
4187  case UPD_DECL_MARKED_USED: {
4188  // Maintain AST consistency: any later redeclarations are used too.
4189  D->markUsed(Reader.getContext());
4190  break;
4191  }
4192 
4193  case UPD_MANGLING_NUMBER:
4194  Reader.getContext().setManglingNumber(cast<NamedDecl>(D),
4195  Record.readInt());
4196  break;
4197 
4199  Reader.getContext().setStaticLocalNumber(cast<VarDecl>(D),
4200  Record.readInt());
4201  break;
4202 
4204  D->addAttr(OMPThreadPrivateDeclAttr::CreateImplicit(Reader.getContext(),
4205  ReadSourceRange()));
4206  break;
4207 
4208  case UPD_DECL_EXPORTED: {
4209  unsigned SubmoduleID = readSubmoduleID();
4210  auto *Exported = cast<NamedDecl>(D);
4211  if (auto *TD = dyn_cast<TagDecl>(Exported))
4212  Exported = TD->getDefinition();
4213  Module *Owner = SubmoduleID ? Reader.getSubmodule(SubmoduleID) : nullptr;
4214  if (Reader.getContext().getLangOpts().ModulesLocalVisibility) {
4215  Reader.getContext().mergeDefinitionIntoModule(cast<NamedDecl>(Exported),
4216  Owner);
4217  Reader.PendingMergedDefinitionsToDeduplicate.insert(
4218  cast<NamedDecl>(Exported));
4219  } else if (Owner && Owner->NameVisibility != Module::AllVisible) {
4220  // If Owner is made visible at some later point, make this declaration
4221  // visible too.
4222  Reader.HiddenNamesMap[Owner].push_back(Exported);
4223  } else {
4224  // The declaration is now visible.
4225  Exported->setVisibleDespiteOwningModule();
4226  }
4227  break;
4228  }
4229 
4232  AttrVec Attrs;
4233  Record.readAttributes(Attrs);
4234  assert(Attrs.size() == 1);
4235  D->addAttr(Attrs[0]);
4236  break;
4237  }
4238  }
4239 }
const uint64_t & readInt()
Returns the current value in this record, and advances to the next value.
Definition: ASTReader.h:2366
RedeclarableResult VisitTypedefNameDecl(TypedefNameDecl *TD)
void VisitTypeDecl(TypeDecl *TD)
void setCategoryNameLoc(SourceLocation Loc)
Definition: DeclObjC.h:2433
A FriendTemplateDecl record.
Definition: ASTBitCodes.h:1354
Defines the clang::ASTContext interface.
A NonTypeTemplateParmDecl record.
Definition: ASTBitCodes.h:1381
void setScopeInfo(unsigned scopeDepth, unsigned parameterIndex)
Definition: Decl.h:1546
Decl * GetLocalDecl(ModuleFile &F, uint32_t LocalID)
Reads a declaration with the given local ID in the given module.
Definition: ASTReader.h:1812
SourceLocation readSourceLocation()
Read a source location, advancing Idx.
Definition: ASTReader.h:2558
NamedDecl * getTargetDecl() const
Gets the underlying declaration which has been brought into the local scope.
Definition: DeclCXX.h:3128
void VisitClassScopeFunctionSpecializationDecl(ClassScopeFunctionSpecializationDecl *D)
static const Decl * getCanonicalDecl(const Decl *D)
void setImplicit(bool I=true)
Definition: DeclBase.h:552
An instance of this class is created to represent a function declaration or definition.
Definition: Decl.h:1697
void VisitVarDecl(VarDecl *VD)
#define MATCH_FIELD(Field)
void setAnonymousStructOrUnion(bool Anon)
Definition: Decl.h:3557
A class which contains all the information about a particular captured value.
Definition: Decl.h:3699
static ImportDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NumLocations)
Create a new, deserialized module import declaration.
Definition: Decl.cpp:4481
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:2519
static VarDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:1876
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:1417
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:794
RedeclarableResult VisitClassTemplateSpecializationDeclImpl(ClassTemplateSpecializationDecl *D)
EnumConstantDecl - An instance of this object exists for each enum constant that is defined...
Definition: Decl.h:2671
void setEmbeddedInDeclarator(bool isInDeclarator)
Definition: Decl.h:3115
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:1009
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
TypedefDecl - Represents the declaration of a typedef-name via the &#39;typedef&#39; type specifier...
Definition: Decl.h:2898
void setParam(unsigned i, ImplicitParamDecl *P)
Definition: Decl.h:3917
Microsoft&#39;s &#39;__super&#39; specifier, stored as a CXXRecordDecl* of the class it appeared in...
An OMPDeclareReductionDecl record.
Definition: ASTBitCodes.h:1435
void VisitEnumConstantDecl(EnumConstantDecl *ECD)
static PragmaCommentDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned ArgSize)
Definition: Decl.cpp:4133
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:8313
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:1372
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:1279
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:4081
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:4071
unsigned LocalNumObjCCategoriesInMap
The number of redeclaration info entries in ObjCCategoriesMap.
Definition: Module.h:420
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:2558
Declaration of a variable template.
NamespaceDecl - Represent a C++ namespace.
Definition: Decl.h:505
A ObjCPropertyDecl record.
Definition: ASTBitCodes.h:1236
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:2504
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:2397
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:4266
QualType getElementType() const
Definition: Type.h:2593
Represents a #pragma comment line.
Definition: Decl.h:139
A ClassTemplateDecl record.
Definition: ASTBitCodes.h:1357
void VisitStaticAssertDecl(StaticAssertDecl *D)
A PragmaDetectMismatchDecl record.
Definition: ASTBitCodes.h:1432
An UnresolvedUsingTypenameDecl record.
Definition: ASTBitCodes.h:1318
An identifier, stored as an IdentifierInfo*.
void setNothrow(bool Nothrow=true)
Definition: Decl.cpp:4276
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
VarDecl - An instance of this class is created to represent a variable declaration or definition...
Definition: Decl.h:806
void VisitNamedDecl(NamedDecl *ND)
Declaration of a redeclarable template.
Definition: DeclTemplate.h:736
An OMPCapturedExprDecl record.
Definition: ASTBitCodes.h:1426
const T * getAs() const
Member-template getAs<specific type>&#39;.
Definition: Type.h:6305
A UsingShadowDecl record.
Definition: ASTBitCodes.h:1306
const unsigned int NUM_PREDEF_DECL_IDS
The number of declaration IDs that are predefined.
Definition: ASTBitCodes.h:1173
The "__interface" keyword.
Definition: Type.h:4691
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:1407
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:412
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:1726
A TemplateTemplateParmDecl record.
Definition: ASTBitCodes.h:1384
ParmVarDecl - Represents a parameter to a function.
Definition: Decl.h:1513
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:1212
void setHasExternalVisibleStorage(bool ES=true)
State whether this DeclContext has external storage for declarations visible in this context...
Definition: DeclBase.h:1903
Module * getSubmodule(serialization::SubmoduleID GlobalID)
Retrieve the submodule that corresponds to a global submodule ID.
Definition: ASTReader.h:2381
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:1398
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:1339
RecordDecl - Represents a struct/union/class.
Definition: Decl.h:3488
Description of a constructor that was inherited from a base class.
Definition: DeclCXX.h:2371
DeclarationName getDeclName() const
getDeclName - Get the actual, stored name of the declaration, which may be a special name...
Definition: Decl.h:291
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:3373
T * readDeclAs()
Reads a declaration from the given position in the record, advancing Idx.
Definition: ASTReader.h:2480
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:3146
void setUninstantiatedDefaultArg(Expr *arg)
Definition: Decl.cpp:2530
static IndirectFieldDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4312
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:566
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:785
void VisitFriendTemplateDecl(FriendTemplateDecl *D)
void setLanguage(LanguageIDs L)
Set the language specified by this linkage specification.
Definition: DeclCXX.h:2792
LambdaCaptureKind
The different capture forms in a lambda introducer.
Definition: Lambda.h:34
FieldDecl - An instance of this class is created by Sema::ActOnField to represent a member of a struc...
Definition: Decl.h:2467
void setBlockMissingReturnType(bool val)
Definition: Decl.h:3828
const Type * getAsType() const
Retrieve the type stored in this nested name specifier.
void setLocStart(SourceLocation L)
Definition: Decl.h:487
static CXXRecordDecl * CreateDeserialized(const ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:156
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:2046
Helper class that saves the current stream position and then restores it when destroyed.
Definition: ASTReader.h:2619
InheritedConstructor getInheritedConstructor() const
Get the constructor that this inheriting constructor is based on.
Definition: DeclCXX.h:2593
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:1144
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:3393
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:2567
TypeSourceInfo * getTypeSourceInfo()
Reads a declarator info from the given record, advancing Idx.
Definition: ASTReader.h:2447
void VisitLabelDecl(LabelDecl *LD)
for(const auto &A :T->param_types())
static NamespaceDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2315
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:1399
size_t size() const
The length of this record.
Definition: ASTReader.h:2356
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:3275
Common * getCommonPtr() const
Definition: DeclTemplate.h:998
void setUsingLoc(SourceLocation L)
Set the source location of the &#39;using&#39; keyword.
Definition: DeclCXX.h:3311
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:3156
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:1348
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:1309
A UsingDirecitveDecl record.
Definition: ASTBitCodes.h:1312
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:2549
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:1257
TypeDecl - Represents a declaration of a type.
Definition: Decl.h:2760
void setHasObjectMember(bool val)
Definition: Decl.h:3562
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:2272
MemberSpecializationInfo * getMemberSpecializationInfo() const
If this enumeration is an instantiation of a member enumeration of a class template specialization...
Definition: Decl.h:3469
DeclID VisitTemplateDecl(TemplateDecl *D)
SourceRange readSourceRange()
Read a source range, advancing Idx.
Definition: ASTReader.h:2563
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:705
static FileScopeAsmDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4416
void VisitCXXMethodDecl(CXXMethodDecl *D)
static TypeAliasDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4386
A ClassTemplateSpecializationDecl record.
Definition: ASTBitCodes.h:1360
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:3410
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)
This represents the body of a CapturedStmt, and serves as its DeclContext.
Definition: Decl.h:3866
Represents an ObjC class declaration.
Definition: DeclObjC.h:1191
Represents a linkage specification.
Definition: DeclCXX.h:2743
static ParmVarDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:2472
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:3718
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:3211
void setInitVal(const llvm::APSInt &V)
Definition: Decl.h:2695
Ordinary names.
Definition: DeclBase.h:144
void setInitExpr(Expr *E)
Definition: Decl.h:2694
void setCachedLinkage(Linkage L) const
Definition: DeclBase.h:394
void setLocStart(SourceLocation L)
Definition: Decl.h:2788
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:1070
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:571
static CXXDeductionGuideDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:1624
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
TypeAliasDecl - Represents the declaration of a typedef-name via a C++0x alias-declaration.
Definition: Decl.h:2918
Represents a prototype with parameter type info, e.g.
Definition: Type.h:3268
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:2660
Represents a ValueDecl that came out of a declarator.
Definition: Decl.h:680
A CXXDeductionGuideDecl record.
Definition: ASTBitCodes.h:1330
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:1390
llvm::FoldingSetVector< ClassTemplatePartialSpecializationDecl > PartialSpecializations
The class template partial specializations for this class template.
A VarTemplateSpecializationDecl record.
Definition: ASTBitCodes.h:1369
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:1423
void VisitDecl(Decl *D)
A record containing CXXBaseSpecifiers.
Definition: ASTBitCodes.h:1393
DiagnosticBuilder Diag(unsigned DiagID) const
Report a diagnostic.
Definition: ASTReader.cpp:8962
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:3163
BlockDecl - This represents a block literal declaration, which is like an unnamed FunctionDecl...
Definition: Decl.h:3695
NamespaceDecl * getAsNamespace() const
Retrieve the namespace stored in this nested name specifier.
ValueDecl - Represent the declaration of a variable (in which case it is an lvalue) a function (in wh...
Definition: Decl.h:627
Expr - This represents one expression.
Definition: Expr.h:106
A ObjCCategoryImplDecl record.
Definition: ASTBitCodes.h:1227
void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *GD)
void setBitWidth(Expr *Width)
setBitWidth - Set the bit-field width for this member.
Definition: Decl.h:2569
llvm::FoldingSetVector< VarTemplatePartialSpecializationDecl > PartialSpecializations
The variable template partial specializations for this variable template.
static LinkageSpecDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2259
A ObjCPropertyImplDecl record.
Definition: ASTBitCodes.h:1239
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:2620
const internal::VariadicAllOfMatcher< Decl > decl
Matches declarations.
void setInit(Expr *I)
Definition: Decl.cpp:2156
void setInvalidDecl(bool Invalid=true)
setInvalidDecl - Indicates the Decl had a semantic error.
Definition: DeclBase.cpp:132
A CXXConstructorDecl record.
Definition: ASTBitCodes.h:1336
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:3935
void setAtEndRange(SourceRange atEnd)
Definition: DeclObjC.h:1141
void setRBraceLoc(SourceLocation L)
Definition: DeclCXX.h:2804
static DeclLink PreviousDeclLink(decl_type *D)
Definition: Redeclarable.h:171
DeclContext * getDeclContext()
Definition: DeclBase.h:425
A record containing CXXCtorInitializers.
Definition: ASTBitCodes.h:1396
A VarTemplateDecl record.
Definition: ASTBitCodes.h:1366
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:2470
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:1956
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:3148
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:2362
A CXXDestructorDecl record.
Definition: ASTBitCodes.h:1342
SmallVector< uint64_t, 1 > ObjCCategories
The Objective-C category lists for categories known to this module.
Definition: Module.h:424
unsigned IsCopyDeductionCandidate
[C++17] Only used by CXXDeductionGuideDecl.
Definition: Decl.h:1759
A NonTypeTemplateParmDecl record that stores an expanded non-type template parameter pack...
Definition: ASTBitCodes.h:1403
static NamespaceAliasDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2377
static CXXConstructorDecl * CreateDeserialized(ASTContext &C, unsigned ID, bool InheritsConstructor)
Definition: DeclCXX.cpp:2045
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:1297
void setTypename(bool TN)
Sets whether the using declaration has &#39;typename&#39;.
Definition: DeclCXX.h:3333
Declaration of an alias template.
unsigned IsScopedUsingClassTag
IsScopedUsingClassTag - If this tag declaration is a scoped enum, then this is true if the scoped enu...
Definition: Decl.h:2986
void setModedTypeSourceInfo(TypeSourceInfo *unmodedTSI, QualType modedTy)
Definition: Decl.h:2863
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:1333
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:1251
void setIvarRBraceLoc(SourceLocation Loc)
Definition: DeclObjC.h:2437
void VisitDecompositionDecl(DecompositionDecl *DD)
Represents a C++ deduction guide declaration.
Definition: DeclCXX.h:1911
Represents a C++ conversion function within a class.
Definition: DeclCXX.h:2682
static UsingDirectiveDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2280
An EnumConstantDecl record.
Definition: ASTBitCodes.h:1203
static ObjCTypeParamDecl * CreateDeserialized(ASTContext &ctx, unsigned ID)
Definition: DeclObjC.cpp:1362
std::string readString()
Read a string, advancing Idx.
Definition: ASTReader.h:2583
void VisitNamespaceAliasDecl(NamespaceAliasDecl *D)
An ImportDecl recording a module import.
Definition: ASTBitCodes.h:1414
A ObjCCategoryDecl record.
Definition: ASTBitCodes.h:1224
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:1233
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:3743
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:3770
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:4159
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:4036
QualifierInfo - A struct with extended info about a syntactic name qualifier, to be used for the case...
Definition: Decl.h:652
void setColonLoc(SourceLocation CLoc)
Sets the location of the colon.
Definition: DeclCXX.h:156
An UnresolvedUsingValueDecl record.
Definition: ASTBitCodes.h:1315
#define false
Definition: stdbool.h:33
The "struct" keyword.
Definition: Type.h:4688
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:4286
Kind
static UsingShadowDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2402
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:3831
static void markIncompleteDeclChainImpl(Redeclarable< DeclT > *D)
static CXXDestructorDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2189
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:4428
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:1288
Pseudo declaration for capturing expressions.
Definition: DeclOpenMP.h:187
void setIvarLBraceLoc(SourceLocation Loc)
Definition: DeclObjC.h:2435
void setBraceRange(SourceRange R)
Definition: Decl.h:3073
void setAtStartLoc(SourceLocation Loc)
Definition: DeclObjC.h:1134
void VisitEmptyDecl(EmptyDecl *D)
void setAnonymousNamespace(NamespaceDecl *D)
Definition: Decl.h:592
NameVisibilityKind NameVisibility
The visibility of names within this particular module.
Definition: Module.h:268
void setFreeStanding(bool isFreeStanding=true)
Definition: Decl.h:3120
void setObjCDeclQualifier(ObjCDeclQualifier QV)
Definition: DeclObjC.h:302
TagDecl - Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:2944
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:378
static DecompositionDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NumBindings)
Definition: DeclCXX.cpp:2610
void setReferenced(bool R=true)
Definition: DeclBase.h:581
LabelDecl - Represents the declaration of a label.
Definition: Decl.h:459
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:3494
void setPosition(unsigned P)
void VisitObjCImplDecl(ObjCImplDecl *D)
Represents a static or instance method of a struct/union/class.
Definition: DeclCXX.h:1964
void setHasFlexibleArrayMember(bool V)
Definition: Decl.h:3542
EnumDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: Decl.h:3287
Represents a C++ nested name specifier, such as "\::std::vector<int>::".
void VisitBindingDecl(BindingDecl *BD)
A TemplateTypeParmDecl record.
Definition: ASTBitCodes.h:1378
void demoteThisDefinitionToDeclaration()
This is a definition which should be demoted to a declaration.
Definition: Decl.h:1291
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:2497
void addDecl(NamedDecl *D)
Definition: UnresolvedSet.h:89
void setDeclName(DeclarationName N)
Set the name of this declaration.
Definition: Decl.h:294
static MSPropertyDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2646
SourceLocation getLocation() const
Definition: ASTBitCodes.h:217
Common * getCommonPtr() const
static ConstructorUsingShadowDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2425
Describes the categories of an Objective-C class.
Definition: ASTBitCodes.h:1924
bool isDeclIDFromModule(serialization::GlobalDeclID ID, ModuleFile &M) const
Returns true if global DeclID ID originated from module M.
Definition: ASTReader.cpp:7075
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:3160
unsigned getIdx() const
The current position in this record.
Definition: ASTReader.h:2353
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:4242
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:1177
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:2376
static VarTemplateDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Create an empty variable template node.
A NamespaceDecl record.
Definition: ASTBitCodes.h:1294
Represents a C++11 static_assert declaration.
Definition: DeclCXX.h:3669
uint32_t BitOffset
Offset in the AST file.
Definition: ASTBitCodes.h:207
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:3524
Describes a module import declaration, which makes the contents of the named module visible in the cu...
Definition: Decl.h:3971
serialization::DeclID readDeclID()
Reads a declaration ID from the given position in this record.
Definition: ASTReader.h:2464
void VisitValueDecl(ValueDecl *VD)
A ObjCProtocolDecl record.
Definition: ASTBitCodes.h:1215
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:2384
void setSetterCXXAssignment(Expr *setterCXXAssignment)
Definition: DeclObjC.h:2880
void VisitEnumDecl(EnumDecl *ED)
static TypedefDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4374
Base class for declarations which introduce a typedef-name.
Definition: Decl.h:2802
void setPropertyDecl(ObjCPropertyDecl *Prop)
Definition: DeclObjC.h:2840
A CXXConversionDecl record.
Definition: ASTBitCodes.h:1345
TagTypeKind
The kind of a tag type.
Definition: Type.h:4686
ObjCTypeParamList * ReadObjCTypeParamList()
Dataflow Directional Tag Classes.
void VisitCXXConversionDecl(CXXConversionDecl *D)
void setDescribedAliasTemplate(TypeAliasTemplateDecl *TAT)
Definition: Decl.h:2936
void setBody(CompoundStmt *B)
Definition: Decl.h:3774
void setImplicitlyInline()
Flag that this function is implicitly inline.
Definition: Decl.h:2250
static CXXConversionDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2221
llvm::BitstreamCursor DeclsCursor
DeclsCursor - This is a cursor to the start of the DECLS_BLOCK block.
Definition: Module.h:387
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:3565
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
IndirectFieldDecl - An instance of this class is created to represent a field injected from an anonym...
Definition: Decl.h:2711
A ClassTemplatePartialSpecializationDecl record.
Definition: ASTBitCodes.h:1363
void setUsingLoc(SourceLocation L)
Set the source location of the &#39;using&#39; keyword.
Definition: DeclCXX.h:3529
DeclCode
Record codes for each kind of declaration.
Definition: ASTBitCodes.h:1189
const Expr * getInit() const
Definition: Decl.h:1212
unsigned IsScoped
IsScoped - True if this tag declaration is a scoped enumeration.
Definition: Decl.h:2980
A decomposition declaration.
Definition: DeclCXX.h:3766
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:3590
A ClassScopeFunctionSpecializationDecl record a class scope function specialization.
Definition: ASTBitCodes.h:1411
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:3388
A LinkageSpecDecl record.
Definition: ASTBitCodes.h:1321
RedeclarableResult VisitRecordDeclImpl(RecordDecl *RD)
static NonTypeTemplateParmDecl * CreateDeserialized(ASTContext &C, unsigned ID)
ParmVarDeclBitfields ParmVarDeclBits
Definition: Decl.h:965
static ObjCCategoryDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:1977
void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D)
void VisitObjCImplementationDecl(ObjCImplementationDecl *D)
EnumDecl - Represents an enum.
Definition: Decl.h:3239
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:2803
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:4186
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:264
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:1429
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:5999
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:4514
NonParmVarDeclBitfields NonParmVarDeclBits
Definition: Decl.h:966
void UpdateDecl(Decl *D, llvm::SmallVectorImpl< serialization::DeclID > &)
void setInstantiatedFromMemberTemplate(RedeclarableTemplateDecl *TD)
Definition: DeclTemplate.h:929
QualType getCanonicalTypeInternal() const
Definition: Type.h:2107
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:2753
uint64_t getGlobalBitOffset(uint32_t LocalOffset)
Get the global offset corresponding to a local offset.
Definition: ASTReader.h:2404
static ImplicitParamDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4222
static RecordDecl * CreateDeserialized(const ASTContext &C, unsigned ID)
Definition: Decl.cpp:3933
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:1707
RedeclarableTemplateDecl * getCanonicalDecl() override
Retrieves the canonical declaration of this template.
Definition: DeclTemplate.h:853
static EnumDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:3820
DeclContext * getRedeclContext()
getRedeclContext - Retrieve the context in which an entity conflicts with other entities of the same ...
Definition: DeclBase.cpp:1663
bool hasSameType(QualType T1, QualType T2) const
Determine whether the given types T1 and T2 are equivalent.
Definition: ASTContext.h:2190
void VisitNamespaceDecl(NamespaceDecl *D)
static FunctionTemplateDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Create an empty function template node.
ObjCInterfaceDecl * getCanonicalDecl() override
Retrieves the canonical declaration of this Objective-C class.
Definition: DeclObjC.h:1934
void setCategoryListRaw(ObjCCategoryDecl *category)
Set the raw pointer to the start of the category/extension list.
Definition: DeclObjC.h:1816
void setSetterName(Selector Sel, SourceLocation Loc=SourceLocation())
Definition: DeclObjC.h:934
The "class" keyword.
Definition: Type.h:4697
Capturing the *this object by reference.
Definition: Lambda.h:35
void VisitUsingDirectiveDecl(UsingDirectiveDecl *D)
void markUsed(ASTContext &C)
Mark the declaration used, in the sense of odr-use.
Definition: DeclBase.cpp:414
void setInnerLocStart(SourceLocation L)
Definition: Decl.h:723
void setObjCMethodScopeInfo(unsigned parameterIndex)
Definition: Decl.h:1541
llvm::iterator_range< specific_attr_iterator< T > > specific_attrs() const
Definition: DeclBase.h:517
void setSignatureAsWritten(TypeSourceInfo *Sig)
Definition: Decl.h:3776
void setPromotionType(QualType T)
Set the promotion type.
Definition: Decl.h:3359
static bool isSameTemplateParameter(const NamedDecl *X, const NamedDecl *Y)
Determine whether two template parameters are similar enough that they may be used in declarations of...
unsigned IsFixed
IsFixed - True if this is an enumeration with fixed underlying type.
Definition: Decl.h:2990
void setAsmString(StringLiteral *Asm)
Definition: Decl.h:3686
static VarTemplateSpecializationDecl * CreateDeserialized(ASTContext &C, unsigned ID)
void setRParenLoc(SourceLocation L)
Definition: Decl.h:3679
A template argument list.
Definition: DeclTemplate.h:210
void mergeDefinitionIntoModule(NamedDecl *ND, Module *M, bool NotifyListeners=true)
Note that the definition ND has been merged into module M, and should be visible whenever M is visibl...
Definition: ASTContext.cpp:924
X
Add a minimal nested name specifier fixit hint to allow lookup of a tag name from an outer enclosing ...
Definition: SemaDecl.cpp:13020
static FieldDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:3640
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate.h) and friends (in DeclFriend.h).
void VisitCapturedDecl(CapturedDecl *CD)
Represents a field declaration created by an @defs(...).
Definition: DeclObjC.h:2031
TranslationUnitDecl * getTranslationUnitDecl() const
Definition: ASTContext.h:989
static Decl * getMostRecentDeclImpl(Redeclarable< DeclT > *D)
Represents a C++ struct/union/class.
Definition: DeclCXX.h:299
static OMPDeclareReductionDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Create deserialized declare reduction node.
Definition: DeclOpenMP.cpp:70
static ObjCImplementationDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:2132
ObjCDeclQualifier
ObjCDeclQualifier - &#39;Qualifiers&#39; written next to the return and parameter types in method declaration...
Definition: DeclBase.h:195
void setInstanceMethod(bool isInst)
Definition: DeclObjC.h:453
void SetRelatedResultType(bool RRT=true)
Note whether this method has a related result type.
Definition: DeclObjC.h:309
void setClassInterface(ObjCInterfaceDecl *IFace)
Definition: DeclObjC.cpp:2044
ObjCIvarDecl - Represents an ObjC instance variable.
Definition: DeclObjC.h:1964
bool operator!=(CanQual< T > x, CanQual< U > y)
bool needsAnonymousDeclarationNumber(const NamedDecl *D)
Determine whether the given declaration needs an anonymous declaration number.
Definition: ASTCommon.cpp:329
Provides information a specialization of a member of a class template, which may be a member function...
Definition: DeclTemplate.h:607
A ObjCImplementationDecl record.
Definition: ASTBitCodes.h:1230
Capturing by reference.
Definition: Lambda.h:38
void setOutOfDate(bool OOD)
Set whether the information for this identifier is out of date with respect to the external source...
void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D)
void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D)
void setReturnTypeSourceInfo(TypeSourceInfo *TInfo)
Definition: DeclObjC.h:376
A ObjCAtDefsFieldDecl record.
Definition: ASTBitCodes.h:1221
Declaration of a class template.
void setIvarLBraceLoc(SourceLocation Loc)
Definition: DeclObjC.h:2714
Stores a list of Objective-C type parameters for a parameterized class or a category/extension thereo...
Definition: DeclObjC.h:654
void VisitAccessSpecDecl(AccessSpecDecl *D)
void setPropertyAttributes(PropertyAttributeKind PRVal)
Definition: DeclObjC.h:861
static BlockDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4252
const unsigned int LOCAL_REDECLARATIONS
Record code for a list of local redeclarations of a declaration.
Definition: ASTBitCodes.h:1181
A TypeAliasDecl record.
Definition: ASTBitCodes.h:1194
void VisitClassTemplatePartialSpecializationDecl(ClassTemplatePartialSpecializationDecl *D)
bool hasSameFunctionTypeIgnoringExceptionSpec(QualType T, QualType U)
Determine whether two function types are the same, ignoring exception specifications in cases where t...
An object for streaming information from a record.
Definition: ASTReader.h:2327
void VisitBlockDecl(BlockDecl *BD)
llvm::FoldingSetVector< VarTemplateSpecializationDecl > Specializations
The variable template specializations for this variable template, including explicit specializations ...
void setDescribedFunctionTemplate(FunctionTemplateDecl *Template)
Definition: Decl.cpp:3230
An ExportDecl record.
Definition: ASTBitCodes.h:1324
void VisitIndirectFieldDecl(IndirectFieldDecl *FD)
unsigned varlist_size() const
Definition: DeclOpenMP.h:74
VarDeclBitfields VarDeclBits
Definition: Decl.h:964
static UsingPackDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NumExpansions)
Definition: DeclCXX.cpp:2494
llvm::FoldingSetVector< ClassTemplateSpecializationDecl > Specializations
The class template specializations for this class template, including explicit specializations and in...
virtual CommonBase * newCommon(ASTContext &C) const =0
TranslationUnitDecl - The top declaration context.
Definition: Decl.h:107
static ObjCInterfaceDecl * CreateDeserialized(const ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:1433
void ReadAttributes(ASTRecordReader &Record, AttrVec &Attrs)
Reads attributes from the current stream position.
void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D)
void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D)
Common * getCommonPtr() const
A FunctionTemplateDecl record.
Definition: ASTBitCodes.h:1375
std::pair< uint64_t, uint64_t > VisitDeclContext(DeclContext *DC)
static ObjCPropertyImplDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:2227
ModuleFile * getOwningModuleFile(const Decl *D)
Retrieve the module file that owns the given declaration, or NULL if the declaration is not from a mo...
Definition: ASTReader.cpp:7085
A TypeAliasTemplateDecl record.
Definition: ASTBitCodes.h:1387
DefinitionKind isThisDeclarationADefinition(ASTContext &) const
Check whether this declaration is a definition.
Definition: Decl.cpp:1980
An instance of this class represents the declaration of a property member.
Definition: DeclCXX.h:3835
void setAtLoc(SourceLocation Loc)
Definition: DeclObjC.h:2835
QualType getType() const
Definition: Decl.h:638
void VisitFunctionTemplateDecl(FunctionTemplateDecl *D)
bool isUnresolvedExceptionSpec(ExceptionSpecificationType ESpecType)
void setCaptures(ASTContext &Context, ArrayRef< Capture > Captures, bool CapturesCXXThis)
Definition: Decl.cpp:4082
A trivial tuple used to represent a source range.
void setIntegerTypeSourceInfo(TypeSourceInfo *TInfo)
Set the underlying integer type source info.
Definition: Decl.h:3376
NamedDecl - This represents a decl with a name.
Definition: Decl.h:245
void VisitVarTemplateDecl(VarTemplateDecl *D)
TODO: Unify with ClassTemplateDecl version? May require unifying ClassTemplateDecl and VarTemplateDec...
bool isTranslationUnit() const
Definition: DeclBase.h:1405
void setTypeSourceInfo(TypeSourceInfo *newType)
Definition: Decl.h:2859
void setAccess(AccessSpecifier AS)
Definition: DeclBase.h:455
void numberAnonymousDeclsWithin(const DeclContext *DC, Fn Visit)
Visit each declaration within DC that needs an anonymous declaration number and call Visit with the d...
Definition: ASTCommon.h:96
Represents a C++ namespace alias.
Definition: DeclCXX.h:2947
bool DeclMustBeEmitted(const Decl *D)
Determines if the decl can be CodeGen&#39;ed or deserialized from PCH lazily, only when used; this is onl...
static UsingDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2473
serialization::DeclID mapGlobalIDToModuleFileGlobalID(ModuleFile &M, serialization::DeclID GlobalID)
Map a global declaration ID into the declaration ID used to refer to this declaration within the give...
Definition: ASTReader.cpp:7214
Declaration of a friend template.
Represents C++ using-directive.
Definition: DeclCXX.h:2843
Represents a #pragma detect_mismatch line.
Definition: Decl.h:173
static ObjCPropertyDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:2199
void setPointOfInstantiation(SourceLocation POI)
Set the first point of instantiation.
Definition: DeclTemplate.h:652
The global specifier &#39;::&#39;. There is no stored value.
void VisitTranslationUnitDecl(TranslationUnitDecl *TU)
static BindingDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2580
void setType(QualType newType)
Definition: Decl.h:639
const LangOptions & getLangOpts() const
Definition: ASTContext.h:688
void setCmdDecl(ImplicitParamDecl *CD)
Definition: DeclObjC.h:447
This represents &#39;#pragma omp threadprivate ...&#39; directive.
Definition: DeclOpenMP.h:39
ObjCCategoryImplDecl - An object of this class encapsulates a category @implementation declaration...
Definition: DeclObjC.h:2518
Declaration of a template function.
Definition: DeclTemplate.h:967
iterator - Iterate over the decls of a specified declaration name.
void setTargetDecl(NamedDecl *ND)
Sets the underlying declaration which has been brought into the local scope.
Definition: DeclCXX.h:3132
void setPropertyIvarDecl(ObjCIvarDecl *Ivar)
Definition: DeclObjC.h:958
Source range/offset of a preprocessed entity.
Definition: ASTBitCodes.h:202
Attr - This represents one attribute.
Definition: Attr.h:43
SourceLocation getLocation() const
Definition: DeclBase.h:416
const serialization::ObjCCategoriesInfo * ObjCCategoriesMap
Array of category list location information within this module file, sorted by the definition ID...
Definition: Module.h:417
Represents a shadow declaration introduced into a scope by a (resolved) using declaration.
Definition: DeclCXX.h:3066
Represents a pack of using declarations that a single using-declarator pack-expanded into...
Definition: DeclCXX.h:3425
ObjCCompatibleAliasDecl - Represents alias of a class.
Definition: DeclObjC.h:2748
EvaluatedStmt * ensureEvaluatedStmt() const
Convert the initializer for this declaration to the elaborated EvaluatedStmt form, which contains extra information on the evaluated value of the initializer.
Definition: Decl.cpp:2195
bool isInheritingConstructor() const
Determine whether this is an implicit constructor synthesized to model a call to a constructor inheri...
Definition: DeclCXX.h:2590
Structure used to store a statement, the constant value to which it was evaluated (if any)...
Definition: Decl.h:776
void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D)
TemplatedKind
The kind of templated function a FunctionDecl can be.
Definition: Decl.h:1701