clang  14.0.0git
ASTReaderDecl.cpp
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1 //===- ASTReaderDecl.cpp - Decl Deserialization ---------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the ASTReader::readDeclRecord method, which is the
10 // entrypoint for loading a decl.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "ASTCommon.h"
15 #include "ASTReaderInternals.h"
16 #include "clang/AST/ASTContext.h"
17 #include "clang/AST/Attr.h"
18 #include "clang/AST/AttrIterator.h"
19 #include "clang/AST/Decl.h"
20 #include "clang/AST/DeclBase.h"
21 #include "clang/AST/DeclCXX.h"
22 #include "clang/AST/DeclFriend.h"
23 #include "clang/AST/DeclObjC.h"
24 #include "clang/AST/DeclOpenMP.h"
25 #include "clang/AST/DeclTemplate.h"
26 #include "clang/AST/DeclVisitor.h"
28 #include "clang/AST/Expr.h"
32 #include "clang/AST/OpenMPClause.h"
33 #include "clang/AST/Redeclarable.h"
34 #include "clang/AST/Stmt.h"
35 #include "clang/AST/TemplateBase.h"
36 #include "clang/AST/Type.h"
38 #include "clang/Basic/AttrKinds.h"
41 #include "clang/Basic/LLVM.h"
42 #include "clang/Basic/Lambda.h"
44 #include "clang/Basic/Linkage.h"
45 #include "clang/Basic/Module.h"
48 #include "clang/Basic/Specifiers.h"
54 #include "llvm/ADT/DenseMap.h"
55 #include "llvm/ADT/FoldingSet.h"
56 #include "llvm/ADT/STLExtras.h"
57 #include "llvm/ADT/SmallPtrSet.h"
58 #include "llvm/ADT/SmallVector.h"
59 #include "llvm/ADT/iterator_range.h"
60 #include "llvm/Bitstream/BitstreamReader.h"
61 #include "llvm/Support/Casting.h"
62 #include "llvm/Support/ErrorHandling.h"
63 #include "llvm/Support/SaveAndRestore.h"
64 #include <algorithm>
65 #include <cassert>
66 #include <cstdint>
67 #include <cstring>
68 #include <string>
69 #include <utility>
70 
71 using namespace clang;
72 using namespace serialization;
73 
74 //===----------------------------------------------------------------------===//
75 // Declaration deserialization
76 //===----------------------------------------------------------------------===//
77 
78 namespace clang {
79 
80  class ASTDeclReader : public DeclVisitor<ASTDeclReader, void> {
81  ASTReader &Reader;
82  ASTRecordReader &Record;
83  ASTReader::RecordLocation Loc;
84  const DeclID ThisDeclID;
85  const SourceLocation ThisDeclLoc;
86 
88 
89  TypeID DeferredTypeID = 0;
90  unsigned AnonymousDeclNumber;
91  GlobalDeclID NamedDeclForTagDecl = 0;
92  IdentifierInfo *TypedefNameForLinkage = nullptr;
93 
94  bool HasPendingBody = false;
95 
96  ///A flag to carry the information for a decl from the entity is
97  /// used. We use it to delay the marking of the canonical decl as used until
98  /// the entire declaration is deserialized and merged.
99  bool IsDeclMarkedUsed = false;
100 
101  uint64_t GetCurrentCursorOffset();
102 
103  uint64_t ReadLocalOffset() {
104  uint64_t LocalOffset = Record.readInt();
105  assert(LocalOffset < Loc.Offset && "offset point after current record");
106  return LocalOffset ? Loc.Offset - LocalOffset : 0;
107  }
108 
109  uint64_t ReadGlobalOffset() {
110  uint64_t Local = ReadLocalOffset();
111  return Local ? Record.getGlobalBitOffset(Local) : 0;
112  }
113 
114  SourceLocation readSourceLocation() {
115  return Record.readSourceLocation();
116  }
117 
118  SourceRange readSourceRange() {
119  return Record.readSourceRange();
120  }
121 
122  TypeSourceInfo *readTypeSourceInfo() {
123  return Record.readTypeSourceInfo();
124  }
125 
126  serialization::DeclID readDeclID() {
127  return Record.readDeclID();
128  }
129 
130  std::string readString() {
131  return Record.readString();
132  }
133 
134  void readDeclIDList(SmallVectorImpl<DeclID> &IDs) {
135  for (unsigned I = 0, Size = Record.readInt(); I != Size; ++I)
136  IDs.push_back(readDeclID());
137  }
138 
139  Decl *readDecl() {
140  return Record.readDecl();
141  }
142 
143  template<typename T>
144  T *readDeclAs() {
145  return Record.readDeclAs<T>();
146  }
147 
148  serialization::SubmoduleID readSubmoduleID() {
149  if (Record.getIdx() == Record.size())
150  return 0;
151 
152  return Record.getGlobalSubmoduleID(Record.readInt());
153  }
154 
155  Module *readModule() {
156  return Record.getSubmodule(readSubmoduleID());
157  }
158 
159  void ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update);
160  void ReadCXXDefinitionData(struct CXXRecordDecl::DefinitionData &Data,
161  const CXXRecordDecl *D);
162  void MergeDefinitionData(CXXRecordDecl *D,
163  struct CXXRecordDecl::DefinitionData &&NewDD);
164  void ReadObjCDefinitionData(struct ObjCInterfaceDecl::DefinitionData &Data);
165  void MergeDefinitionData(ObjCInterfaceDecl *D,
166  struct ObjCInterfaceDecl::DefinitionData &&NewDD);
167  void ReadObjCDefinitionData(struct ObjCProtocolDecl::DefinitionData &Data);
168  void MergeDefinitionData(ObjCProtocolDecl *D,
169  struct ObjCProtocolDecl::DefinitionData &&NewDD);
170 
171  static DeclContext *getPrimaryDCForAnonymousDecl(DeclContext *LexicalDC);
172 
173  static NamedDecl *getAnonymousDeclForMerging(ASTReader &Reader,
174  DeclContext *DC,
175  unsigned Index);
176  static void setAnonymousDeclForMerging(ASTReader &Reader, DeclContext *DC,
177  unsigned Index, NamedDecl *D);
178 
179  /// Results from loading a RedeclarableDecl.
180  class RedeclarableResult {
181  Decl *MergeWith;
182  GlobalDeclID FirstID;
183  bool IsKeyDecl;
184 
185  public:
186  RedeclarableResult(Decl *MergeWith, GlobalDeclID FirstID, bool IsKeyDecl)
187  : MergeWith(MergeWith), FirstID(FirstID), IsKeyDecl(IsKeyDecl) {}
188 
189  /// Retrieve the first ID.
190  GlobalDeclID getFirstID() const { return FirstID; }
191 
192  /// Is this declaration a key declaration?
193  bool isKeyDecl() const { return IsKeyDecl; }
194 
195  /// Get a known declaration that this should be merged with, if
196  /// any.
197  Decl *getKnownMergeTarget() const { return MergeWith; }
198  };
199 
200  /// Class used to capture the result of searching for an existing
201  /// declaration of a specific kind and name, along with the ability
202  /// to update the place where this result was found (the declaration
203  /// chain hanging off an identifier or the DeclContext we searched in)
204  /// if requested.
205  class FindExistingResult {
206  ASTReader &Reader;
207  NamedDecl *New = nullptr;
208  NamedDecl *Existing = nullptr;
209  bool AddResult = false;
210  unsigned AnonymousDeclNumber = 0;
211  IdentifierInfo *TypedefNameForLinkage = nullptr;
212 
213  public:
214  FindExistingResult(ASTReader &Reader) : Reader(Reader) {}
215 
216  FindExistingResult(ASTReader &Reader, NamedDecl *New, NamedDecl *Existing,
217  unsigned AnonymousDeclNumber,
218  IdentifierInfo *TypedefNameForLinkage)
219  : Reader(Reader), New(New), Existing(Existing), AddResult(true),
220  AnonymousDeclNumber(AnonymousDeclNumber),
221  TypedefNameForLinkage(TypedefNameForLinkage) {}
222 
223  FindExistingResult(FindExistingResult &&Other)
224  : Reader(Other.Reader), New(Other.New), Existing(Other.Existing),
225  AddResult(Other.AddResult),
226  AnonymousDeclNumber(Other.AnonymousDeclNumber),
227  TypedefNameForLinkage(Other.TypedefNameForLinkage) {
228  Other.AddResult = false;
229  }
230 
231  FindExistingResult &operator=(FindExistingResult &&) = delete;
232  ~FindExistingResult();
233 
234  /// Suppress the addition of this result into the known set of
235  /// names.
236  void suppress() { AddResult = false; }
237 
238  operator NamedDecl*() const { return Existing; }
239 
240  template<typename T>
241  operator T*() const { return dyn_cast_or_null<T>(Existing); }
242  };
243 
244  static DeclContext *getPrimaryContextForMerging(ASTReader &Reader,
245  DeclContext *DC);
246  FindExistingResult findExisting(NamedDecl *D);
247 
248  public:
250  ASTReader::RecordLocation Loc,
251  DeclID thisDeclID, SourceLocation ThisDeclLoc)
252  : Reader(Reader), Record(Record), Loc(Loc), ThisDeclID(thisDeclID),
253  ThisDeclLoc(ThisDeclLoc) {}
254 
255  template <typename T> static
258  if (IDs.empty())
259  return;
260 
261  // FIXME: We should avoid this pattern of getting the ASTContext.
262  ASTContext &C = D->getASTContext();
263 
264  auto *&LazySpecializations = D->getCommonPtr()->LazySpecializations;
265 
266  if (auto &Old = LazySpecializations) {
267  IDs.insert(IDs.end(), Old + 1, Old + 1 + Old[0]);
268  llvm::sort(IDs);
269  IDs.erase(std::unique(IDs.begin(), IDs.end()), IDs.end());
270  }
271 
272  auto *Result = new (C) serialization::DeclID[1 + IDs.size()];
273  *Result = IDs.size();
274  std::copy(IDs.begin(), IDs.end(), Result + 1);
275 
276  LazySpecializations = Result;
277  }
278 
279  template <typename DeclT>
280  static Decl *getMostRecentDeclImpl(Redeclarable<DeclT> *D);
281  static Decl *getMostRecentDeclImpl(...);
282  static Decl *getMostRecentDecl(Decl *D);
283 
284  static void mergeInheritableAttributes(ASTReader &Reader, Decl *D,
285  Decl *Previous);
286 
287  template <typename DeclT>
288  static void attachPreviousDeclImpl(ASTReader &Reader,
290  Decl *Canon);
291  static void attachPreviousDeclImpl(ASTReader &Reader, ...);
292  static void attachPreviousDecl(ASTReader &Reader, Decl *D, Decl *Previous,
293  Decl *Canon);
294 
295  template <typename DeclT>
296  static void attachLatestDeclImpl(Redeclarable<DeclT> *D, Decl *Latest);
297  static void attachLatestDeclImpl(...);
298  static void attachLatestDecl(Decl *D, Decl *latest);
299 
300  template <typename DeclT>
301  static void markIncompleteDeclChainImpl(Redeclarable<DeclT> *D);
302  static void markIncompleteDeclChainImpl(...);
303 
304  /// Determine whether this declaration has a pending body.
305  bool hasPendingBody() const { return HasPendingBody; }
306 
307  void ReadFunctionDefinition(FunctionDecl *FD);
308  void Visit(Decl *D);
309 
310  void UpdateDecl(Decl *D, SmallVectorImpl<serialization::DeclID> &);
311 
313  ObjCCategoryDecl *Next) {
314  Cat->NextClassCategory = Next;
315  }
316 
317  void VisitDecl(Decl *D);
318  void VisitPragmaCommentDecl(PragmaCommentDecl *D);
319  void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D);
320  void VisitTranslationUnitDecl(TranslationUnitDecl *TU);
321  void VisitNamedDecl(NamedDecl *ND);
322  void VisitLabelDecl(LabelDecl *LD);
323  void VisitNamespaceDecl(NamespaceDecl *D);
324  void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
325  void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
326  void VisitTypeDecl(TypeDecl *TD);
327  RedeclarableResult VisitTypedefNameDecl(TypedefNameDecl *TD);
328  void VisitTypedefDecl(TypedefDecl *TD);
329  void VisitTypeAliasDecl(TypeAliasDecl *TD);
330  void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
331  void VisitUnresolvedUsingIfExistsDecl(UnresolvedUsingIfExistsDecl *D);
332  RedeclarableResult VisitTagDecl(TagDecl *TD);
333  void VisitEnumDecl(EnumDecl *ED);
334  RedeclarableResult VisitRecordDeclImpl(RecordDecl *RD);
335  void VisitRecordDecl(RecordDecl *RD);
336  RedeclarableResult VisitCXXRecordDeclImpl(CXXRecordDecl *D);
337  void VisitCXXRecordDecl(CXXRecordDecl *D) { VisitCXXRecordDeclImpl(D); }
338  RedeclarableResult VisitClassTemplateSpecializationDeclImpl(
340 
343  VisitClassTemplateSpecializationDeclImpl(D);
344  }
345 
346  void VisitClassTemplatePartialSpecializationDecl(
348  void VisitClassScopeFunctionSpecializationDecl(
350  RedeclarableResult
351  VisitVarTemplateSpecializationDeclImpl(VarTemplateSpecializationDecl *D);
352 
354  VisitVarTemplateSpecializationDeclImpl(D);
355  }
356 
357  void VisitVarTemplatePartialSpecializationDecl(
359  void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
360  void VisitValueDecl(ValueDecl *VD);
361  void VisitEnumConstantDecl(EnumConstantDecl *ECD);
362  void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
363  void VisitDeclaratorDecl(DeclaratorDecl *DD);
364  void VisitFunctionDecl(FunctionDecl *FD);
365  void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *GD);
366  void VisitCXXMethodDecl(CXXMethodDecl *D);
367  void VisitCXXConstructorDecl(CXXConstructorDecl *D);
368  void VisitCXXDestructorDecl(CXXDestructorDecl *D);
369  void VisitCXXConversionDecl(CXXConversionDecl *D);
370  void VisitFieldDecl(FieldDecl *FD);
371  void VisitMSPropertyDecl(MSPropertyDecl *FD);
372  void VisitMSGuidDecl(MSGuidDecl *D);
373  void VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D);
374  void VisitIndirectFieldDecl(IndirectFieldDecl *FD);
375  RedeclarableResult VisitVarDeclImpl(VarDecl *D);
376  void VisitVarDecl(VarDecl *VD) { VisitVarDeclImpl(VD); }
377  void VisitImplicitParamDecl(ImplicitParamDecl *PD);
378  void VisitParmVarDecl(ParmVarDecl *PD);
379  void VisitDecompositionDecl(DecompositionDecl *DD);
380  void VisitBindingDecl(BindingDecl *BD);
381  void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
382  DeclID VisitTemplateDecl(TemplateDecl *D);
383  void VisitConceptDecl(ConceptDecl *D);
384  void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D);
385  RedeclarableResult VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
386  void VisitClassTemplateDecl(ClassTemplateDecl *D);
387  void VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D);
388  void VisitVarTemplateDecl(VarTemplateDecl *D);
389  void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
390  void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
391  void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
392  void VisitUsingDecl(UsingDecl *D);
393  void VisitUsingEnumDecl(UsingEnumDecl *D);
394  void VisitUsingPackDecl(UsingPackDecl *D);
395  void VisitUsingShadowDecl(UsingShadowDecl *D);
396  void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
397  void VisitLinkageSpecDecl(LinkageSpecDecl *D);
398  void VisitExportDecl(ExportDecl *D);
399  void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
400  void VisitImportDecl(ImportDecl *D);
401  void VisitAccessSpecDecl(AccessSpecDecl *D);
402  void VisitFriendDecl(FriendDecl *D);
403  void VisitFriendTemplateDecl(FriendTemplateDecl *D);
404  void VisitStaticAssertDecl(StaticAssertDecl *D);
405  void VisitBlockDecl(BlockDecl *BD);
406  void VisitCapturedDecl(CapturedDecl *CD);
407  void VisitEmptyDecl(EmptyDecl *D);
408  void VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D);
409 
410  std::pair<uint64_t, uint64_t> VisitDeclContext(DeclContext *DC);
411 
412  template<typename T>
413  RedeclarableResult VisitRedeclarable(Redeclarable<T> *D);
414 
415  template<typename T>
416  void mergeRedeclarable(Redeclarable<T> *D, RedeclarableResult &Redecl,
417  DeclID TemplatePatternID = 0);
418 
419  template<typename T>
420  void mergeRedeclarable(Redeclarable<T> *D, T *Existing,
421  RedeclarableResult &Redecl,
422  DeclID TemplatePatternID = 0);
423 
424  template<typename T>
425  void mergeMergeable(Mergeable<T> *D);
426 
427  void mergeMergeable(LifetimeExtendedTemporaryDecl *D);
428 
429  void mergeTemplatePattern(RedeclarableTemplateDecl *D,
430  RedeclarableTemplateDecl *Existing,
431  DeclID DsID, bool IsKeyDecl);
432 
433  ObjCTypeParamList *ReadObjCTypeParamList();
434 
435  // FIXME: Reorder according to DeclNodes.td?
436  void VisitObjCMethodDecl(ObjCMethodDecl *D);
437  void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
438  void VisitObjCContainerDecl(ObjCContainerDecl *D);
439  void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
440  void VisitObjCIvarDecl(ObjCIvarDecl *D);
441  void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
442  void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
443  void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
444  void VisitObjCImplDecl(ObjCImplDecl *D);
445  void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
446  void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
447  void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
448  void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
449  void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
450  void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
451  void VisitOMPAllocateDecl(OMPAllocateDecl *D);
452  void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
453  void VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D);
454  void VisitOMPRequiresDecl(OMPRequiresDecl *D);
455  void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
456  };
457 
458 } // namespace clang
459 
460 namespace {
461 
462 /// Iterator over the redeclarations of a declaration that have already
463 /// been merged into the same redeclaration chain.
464 template<typename DeclT>
465 class MergedRedeclIterator {
466  DeclT *Start;
467  DeclT *Canonical = nullptr;
468  DeclT *Current = nullptr;
469 
470 public:
471  MergedRedeclIterator() = default;
472  MergedRedeclIterator(DeclT *Start) : Start(Start), Current(Start) {}
473 
474  DeclT *operator*() { return Current; }
475 
476  MergedRedeclIterator &operator++() {
477  if (Current->isFirstDecl()) {
478  Canonical = Current;
479  Current = Current->getMostRecentDecl();
480  } else
481  Current = Current->getPreviousDecl();
482 
483  // If we started in the merged portion, we'll reach our start position
484  // eventually. Otherwise, we'll never reach it, but the second declaration
485  // we reached was the canonical declaration, so stop when we see that one
486  // again.
487  if (Current == Start || Current == Canonical)
488  Current = nullptr;
489  return *this;
490  }
491 
492  friend bool operator!=(const MergedRedeclIterator &A,
493  const MergedRedeclIterator &B) {
494  return A.Current != B.Current;
495  }
496 };
497 
498 } // namespace
499 
500 template <typename DeclT>
501 static llvm::iterator_range<MergedRedeclIterator<DeclT>>
502 merged_redecls(DeclT *D) {
503  return llvm::make_range(MergedRedeclIterator<DeclT>(D),
504  MergedRedeclIterator<DeclT>());
505 }
506 
507 uint64_t ASTDeclReader::GetCurrentCursorOffset() {
508  return Loc.F->DeclsCursor.GetCurrentBitNo() + Loc.F->GlobalBitOffset;
509 }
510 
512  if (Record.readInt()) {
513  Reader.DefinitionSource[FD] =
514  Loc.F->Kind == ModuleKind::MK_MainFile ||
515  Reader.getContext().getLangOpts().BuildingPCHWithObjectFile;
516  }
517  if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
518  CD->setNumCtorInitializers(Record.readInt());
519  if (CD->getNumCtorInitializers())
520  CD->CtorInitializers = ReadGlobalOffset();
521  }
522  // Store the offset of the body so we can lazily load it later.
523  Reader.PendingBodies[FD] = GetCurrentCursorOffset();
524  HasPendingBody = true;
525 }
526 
529 
530  // At this point we have deserialized and merged the decl and it is safe to
531  // update its canonical decl to signal that the entire entity is used.
532  D->getCanonicalDecl()->Used |= IsDeclMarkedUsed;
533  IsDeclMarkedUsed = false;
534 
535  if (auto *DD = dyn_cast<DeclaratorDecl>(D)) {
536  if (auto *TInfo = DD->getTypeSourceInfo())
537  Record.readTypeLoc(TInfo->getTypeLoc());
538  }
539 
540  if (auto *TD = dyn_cast<TypeDecl>(D)) {
541  // We have a fully initialized TypeDecl. Read its type now.
542  TD->setTypeForDecl(Reader.GetType(DeferredTypeID).getTypePtrOrNull());
543 
544  // If this is a tag declaration with a typedef name for linkage, it's safe
545  // to load that typedef now.
546  if (NamedDeclForTagDecl)
547  cast<TagDecl>(D)->TypedefNameDeclOrQualifier =
548  cast<TypedefNameDecl>(Reader.GetDecl(NamedDeclForTagDecl));
549  } else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
550  // if we have a fully initialized TypeDecl, we can safely read its type now.
551  ID->TypeForDecl = Reader.GetType(DeferredTypeID).getTypePtrOrNull();
552  } else if (auto *FD = dyn_cast<FunctionDecl>(D)) {
553  // FunctionDecl's body was written last after all other Stmts/Exprs.
554  // We only read it if FD doesn't already have a body (e.g., from another
555  // module).
556  // FIXME: Can we diagnose ODR violations somehow?
557  if (Record.readInt())
558  ReadFunctionDefinition(FD);
559  }
560 }
561 
563  if (D->isTemplateParameter() || D->isTemplateParameterPack() ||
564  isa<ParmVarDecl>(D) || isa<ObjCTypeParamDecl>(D)) {
565  // We don't want to deserialize the DeclContext of a template
566  // parameter or of a parameter of a function template immediately. These
567  // entities might be used in the formulation of its DeclContext (for
568  // example, a function parameter can be used in decltype() in trailing
569  // return type of the function). Use the translation unit DeclContext as a
570  // placeholder.
571  GlobalDeclID SemaDCIDForTemplateParmDecl = readDeclID();
572  GlobalDeclID LexicalDCIDForTemplateParmDecl = readDeclID();
573  if (!LexicalDCIDForTemplateParmDecl)
574  LexicalDCIDForTemplateParmDecl = SemaDCIDForTemplateParmDecl;
575  Reader.addPendingDeclContextInfo(D,
576  SemaDCIDForTemplateParmDecl,
577  LexicalDCIDForTemplateParmDecl);
578  D->setDeclContext(Reader.getContext().getTranslationUnitDecl());
579  } else {
580  auto *SemaDC = readDeclAs<DeclContext>();
581  auto *LexicalDC = readDeclAs<DeclContext>();
582  if (!LexicalDC)
583  LexicalDC = SemaDC;
584  DeclContext *MergedSemaDC = Reader.MergedDeclContexts.lookup(SemaDC);
585  // Avoid calling setLexicalDeclContext() directly because it uses
586  // Decl::getASTContext() internally which is unsafe during derialization.
587  D->setDeclContextsImpl(MergedSemaDC ? MergedSemaDC : SemaDC, LexicalDC,
588  Reader.getContext());
589  }
590  D->setLocation(ThisDeclLoc);
591  D->InvalidDecl = Record.readInt();
592  if (Record.readInt()) { // hasAttrs
593  AttrVec Attrs;
594  Record.readAttributes(Attrs);
595  // Avoid calling setAttrs() directly because it uses Decl::getASTContext()
596  // internally which is unsafe during derialization.
597  D->setAttrsImpl(Attrs, Reader.getContext());
598  }
599  D->setImplicit(Record.readInt());
600  D->Used = Record.readInt();
601  IsDeclMarkedUsed |= D->Used;
602  D->setReferenced(Record.readInt());
603  D->setTopLevelDeclInObjCContainer(Record.readInt());
604  D->setAccess((AccessSpecifier)Record.readInt());
605  D->FromASTFile = true;
606  bool ModulePrivate = Record.readInt();
607 
608  // Determine whether this declaration is part of a (sub)module. If so, it
609  // may not yet be visible.
610  if (unsigned SubmoduleID = readSubmoduleID()) {
611  // Store the owning submodule ID in the declaration.
616 
617  if (ModulePrivate) {
618  // Module-private declarations are never visible, so there is no work to
619  // do.
620  } else if (Reader.getContext().getLangOpts().ModulesLocalVisibility) {
621  // If local visibility is being tracked, this declaration will become
622  // hidden and visible as the owning module does.
623  } else if (Module *Owner = Reader.getSubmodule(SubmoduleID)) {
624  // Mark the declaration as visible when its owning module becomes visible.
625  if (Owner->NameVisibility == Module::AllVisible)
627  else
628  Reader.HiddenNamesMap[Owner].push_back(D);
629  }
630  } else if (ModulePrivate) {
632  }
633 }
634 
636  VisitDecl(D);
637  D->setLocation(readSourceLocation());
638  D->CommentKind = (PragmaMSCommentKind)Record.readInt();
639  std::string Arg = readString();
640  memcpy(D->getTrailingObjects<char>(), Arg.data(), Arg.size());
641  D->getTrailingObjects<char>()[Arg.size()] = '\0';
642 }
643 
645  VisitDecl(D);
646  D->setLocation(readSourceLocation());
647  std::string Name = readString();
648  memcpy(D->getTrailingObjects<char>(), Name.data(), Name.size());
649  D->getTrailingObjects<char>()[Name.size()] = '\0';
650 
651  D->ValueStart = Name.size() + 1;
652  std::string Value = readString();
653  memcpy(D->getTrailingObjects<char>() + D->ValueStart, Value.data(),
654  Value.size());
655  D->getTrailingObjects<char>()[D->ValueStart + Value.size()] = '\0';
656 }
657 
659  llvm_unreachable("Translation units are not serialized");
660 }
661 
663  VisitDecl(ND);
664  ND->setDeclName(Record.readDeclarationName());
665  AnonymousDeclNumber = Record.readInt();
666 }
667 
669  VisitNamedDecl(TD);
670  TD->setLocStart(readSourceLocation());
671  // Delay type reading until after we have fully initialized the decl.
672  DeferredTypeID = Record.getGlobalTypeID(Record.readInt());
673 }
674 
675 ASTDeclReader::RedeclarableResult
677  RedeclarableResult Redecl = VisitRedeclarable(TD);
678  VisitTypeDecl(TD);
679  TypeSourceInfo *TInfo = readTypeSourceInfo();
680  if (Record.readInt()) { // isModed
681  QualType modedT = Record.readType();
682  TD->setModedTypeSourceInfo(TInfo, modedT);
683  } else
684  TD->setTypeSourceInfo(TInfo);
685  // Read and discard the declaration for which this is a typedef name for
686  // linkage, if it exists. We cannot rely on our type to pull in this decl,
687  // because it might have been merged with a type from another module and
688  // thus might not refer to our version of the declaration.
689  readDecl();
690  return Redecl;
691 }
692 
694  RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
695  mergeRedeclarable(TD, Redecl);
696 }
697 
699  RedeclarableResult Redecl = VisitTypedefNameDecl(TD);
700  if (auto *Template = readDeclAs<TypeAliasTemplateDecl>())
701  // Merged when we merge the template.
702  TD->setDescribedAliasTemplate(Template);
703  else
704  mergeRedeclarable(TD, Redecl);
705 }
706 
707 ASTDeclReader::RedeclarableResult ASTDeclReader::VisitTagDecl(TagDecl *TD) {
708  RedeclarableResult Redecl = VisitRedeclarable(TD);
709  VisitTypeDecl(TD);
710 
711  TD->IdentifierNamespace = Record.readInt();
712  TD->setTagKind((TagDecl::TagKind)Record.readInt());
713  if (!isa<CXXRecordDecl>(TD))
714  TD->setCompleteDefinition(Record.readInt());
715  TD->setEmbeddedInDeclarator(Record.readInt());
716  TD->setFreeStanding(Record.readInt());
717  TD->setCompleteDefinitionRequired(Record.readInt());
718  TD->setBraceRange(readSourceRange());
719 
720  switch (Record.readInt()) {
721  case 0:
722  break;
723  case 1: { // ExtInfo
724  auto *Info = new (Reader.getContext()) TagDecl::ExtInfo();
725  Record.readQualifierInfo(*Info);
726  TD->TypedefNameDeclOrQualifier = Info;
727  break;
728  }
729  case 2: // TypedefNameForAnonDecl
730  NamedDeclForTagDecl = readDeclID();
731  TypedefNameForLinkage = Record.readIdentifier();
732  break;
733  default:
734  llvm_unreachable("unexpected tag info kind");
735  }
736 
737  if (!isa<CXXRecordDecl>(TD))
738  mergeRedeclarable(TD, Redecl);
739  return Redecl;
740 }
741 
743  VisitTagDecl(ED);
744  if (TypeSourceInfo *TI = readTypeSourceInfo())
745  ED->setIntegerTypeSourceInfo(TI);
746  else
747  ED->setIntegerType(Record.readType());
748  ED->setPromotionType(Record.readType());
749  ED->setNumPositiveBits(Record.readInt());
750  ED->setNumNegativeBits(Record.readInt());
751  ED->setScoped(Record.readInt());
752  ED->setScopedUsingClassTag(Record.readInt());
753  ED->setFixed(Record.readInt());
754 
755  ED->setHasODRHash(true);
756  ED->ODRHash = Record.readInt();
757 
758  // If this is a definition subject to the ODR, and we already have a
759  // definition, merge this one into it.
760  if (ED->isCompleteDefinition() &&
761  Reader.getContext().getLangOpts().Modules &&
762  Reader.getContext().getLangOpts().CPlusPlus) {
763  EnumDecl *&OldDef = Reader.EnumDefinitions[ED->getCanonicalDecl()];
764  if (!OldDef) {
765  // This is the first time we've seen an imported definition. Look for a
766  // local definition before deciding that we are the first definition.
767  for (auto *D : merged_redecls(ED->getCanonicalDecl())) {
768  if (!D->isFromASTFile() && D->isCompleteDefinition()) {
769  OldDef = D;
770  break;
771  }
772  }
773  }
774  if (OldDef) {
775  Reader.MergedDeclContexts.insert(std::make_pair(ED, OldDef));
776  ED->setCompleteDefinition(false);
777  Reader.mergeDefinitionVisibility(OldDef, ED);
778  if (OldDef->getODRHash() != ED->getODRHash())
779  Reader.PendingEnumOdrMergeFailures[OldDef].push_back(ED);
780  } else {
781  OldDef = ED;
782  }
783  }
784 
785  if (auto *InstED = readDeclAs<EnumDecl>()) {
786  auto TSK = (TemplateSpecializationKind)Record.readInt();
787  SourceLocation POI = readSourceLocation();
788  ED->setInstantiationOfMemberEnum(Reader.getContext(), InstED, TSK);
790  }
791 }
792 
793 ASTDeclReader::RedeclarableResult
795  RedeclarableResult Redecl = VisitTagDecl(RD);
796  RD->setHasFlexibleArrayMember(Record.readInt());
797  RD->setAnonymousStructOrUnion(Record.readInt());
798  RD->setHasObjectMember(Record.readInt());
799  RD->setHasVolatileMember(Record.readInt());
800  RD->setNonTrivialToPrimitiveDefaultInitialize(Record.readInt());
801  RD->setNonTrivialToPrimitiveCopy(Record.readInt());
802  RD->setNonTrivialToPrimitiveDestroy(Record.readInt());
804  RD->setHasNonTrivialToPrimitiveDestructCUnion(Record.readInt());
805  RD->setHasNonTrivialToPrimitiveCopyCUnion(Record.readInt());
806  RD->setParamDestroyedInCallee(Record.readInt());
808  return Redecl;
809 }
810 
812  VisitRecordDeclImpl(RD);
813 
814  // Maintain the invariant of a redeclaration chain containing only
815  // a single definition.
816  if (RD->isCompleteDefinition()) {
817  RecordDecl *Canon = static_cast<RecordDecl *>(RD->getCanonicalDecl());
818  RecordDecl *&OldDef = Reader.RecordDefinitions[Canon];
819  if (!OldDef) {
820  // This is the first time we've seen an imported definition. Look for a
821  // local definition before deciding that we are the first definition.
822  for (auto *D : merged_redecls(Canon)) {
823  if (!D->isFromASTFile() && D->isCompleteDefinition()) {
824  OldDef = D;
825  break;
826  }
827  }
828  }
829  if (OldDef) {
830  Reader.MergedDeclContexts.insert(std::make_pair(RD, OldDef));
831  RD->setCompleteDefinition(false);
832  Reader.mergeDefinitionVisibility(OldDef, RD);
833  } else {
834  OldDef = RD;
835  }
836  }
837 }
838 
840  VisitNamedDecl(VD);
841  // For function declarations, defer reading the type in case the function has
842  // a deduced return type that references an entity declared within the
843  // function.
844  if (isa<FunctionDecl>(VD))
845  DeferredTypeID = Record.getGlobalTypeID(Record.readInt());
846  else
847  VD->setType(Record.readType());
848 }
849 
851  VisitValueDecl(ECD);
852  if (Record.readInt())
853  ECD->setInitExpr(Record.readExpr());
854  ECD->setInitVal(Record.readAPSInt());
855  mergeMergeable(ECD);
856 }
857 
859  VisitValueDecl(DD);
860  DD->setInnerLocStart(readSourceLocation());
861  if (Record.readInt()) { // hasExtInfo
862  auto *Info = new (Reader.getContext()) DeclaratorDecl::ExtInfo();
863  Record.readQualifierInfo(*Info);
864  Info->TrailingRequiresClause = Record.readExpr();
865  DD->DeclInfo = Info;
866  }
867  QualType TSIType = Record.readType();
868  DD->setTypeSourceInfo(
869  TSIType.isNull() ? nullptr
870  : Reader.getContext().CreateTypeSourceInfo(TSIType));
871 }
872 
874  RedeclarableResult Redecl = VisitRedeclarable(FD);
875  VisitDeclaratorDecl(FD);
876 
877  // Attach a type to this function. Use the real type if possible, but fall
878  // back to the type as written if it involves a deduced return type.
879  if (FD->getTypeSourceInfo() &&
882  // We'll set up the real type in Visit, once we've finished loading the
883  // function.
884  FD->setType(FD->getTypeSourceInfo()->getType());
885  Reader.PendingFunctionTypes.push_back({FD, DeferredTypeID});
886  } else {
887  FD->setType(Reader.GetType(DeferredTypeID));
888  }
889  DeferredTypeID = 0;
890 
891  FD->DNLoc = Record.readDeclarationNameLoc(FD->getDeclName());
892  FD->IdentifierNamespace = Record.readInt();
893 
894  // FunctionDecl's body is handled last at ASTDeclReader::Visit,
895  // after everything else is read.
896 
897  FD->setStorageClass(static_cast<StorageClass>(Record.readInt()));
898  FD->setInlineSpecified(Record.readInt());
899  FD->setImplicitlyInline(Record.readInt());
900  FD->setVirtualAsWritten(Record.readInt());
901  // We defer calling `FunctionDecl::setPure()` here as for methods of
902  // `CXXTemplateSpecializationDecl`s, we may not have connected up the
903  // definition (which is required for `setPure`).
904  const bool Pure = Record.readInt();
905  FD->setHasInheritedPrototype(Record.readInt());
906  FD->setHasWrittenPrototype(Record.readInt());
907  FD->setDeletedAsWritten(Record.readInt());
908  FD->setTrivial(Record.readInt());
909  FD->setTrivialForCall(Record.readInt());
910  FD->setDefaulted(Record.readInt());
911  FD->setExplicitlyDefaulted(Record.readInt());
912  FD->setHasImplicitReturnZero(Record.readInt());
913  FD->setConstexprKind(static_cast<ConstexprSpecKind>(Record.readInt()));
914  FD->setUsesSEHTry(Record.readInt());
915  FD->setHasSkippedBody(Record.readInt());
916  FD->setIsMultiVersion(Record.readInt());
917  FD->setLateTemplateParsed(Record.readInt());
918 
919  FD->setCachedLinkage(static_cast<Linkage>(Record.readInt()));
920  FD->EndRangeLoc = readSourceLocation();
921 
922  FD->ODRHash = Record.readInt();
923  FD->setHasODRHash(true);
924 
925  if (FD->isDefaulted()) {
926  if (unsigned NumLookups = Record.readInt()) {
928  for (unsigned I = 0; I != NumLookups; ++I) {
929  NamedDecl *ND = Record.readDeclAs<NamedDecl>();
930  AccessSpecifier AS = (AccessSpecifier)Record.readInt();
931  Lookups.push_back(DeclAccessPair::make(ND, AS));
932  }
934  Reader.getContext(), Lookups));
935  }
936  }
937 
938  switch ((FunctionDecl::TemplatedKind)Record.readInt()) {
940  mergeRedeclarable(FD, Redecl);
941  break;
943  // Merged when we merge the template.
944  FD->setDescribedFunctionTemplate(readDeclAs<FunctionTemplateDecl>());
945  break;
947  auto *InstFD = readDeclAs<FunctionDecl>();
948  auto TSK = (TemplateSpecializationKind)Record.readInt();
949  SourceLocation POI = readSourceLocation();
950  FD->setInstantiationOfMemberFunction(Reader.getContext(), InstFD, TSK);
952  mergeRedeclarable(FD, Redecl);
953  break;
954  }
956  auto *Template = readDeclAs<FunctionTemplateDecl>();
957  auto TSK = (TemplateSpecializationKind)Record.readInt();
958 
959  // Template arguments.
961  Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
962 
963  // Template args as written.
965  SourceLocation LAngleLoc, RAngleLoc;
966  bool HasTemplateArgumentsAsWritten = Record.readInt();
967  if (HasTemplateArgumentsAsWritten) {
968  unsigned NumTemplateArgLocs = Record.readInt();
969  TemplArgLocs.reserve(NumTemplateArgLocs);
970  for (unsigned i = 0; i != NumTemplateArgLocs; ++i)
971  TemplArgLocs.push_back(Record.readTemplateArgumentLoc());
972 
973  LAngleLoc = readSourceLocation();
974  RAngleLoc = readSourceLocation();
975  }
976 
977  SourceLocation POI = readSourceLocation();
978 
979  ASTContext &C = Reader.getContext();
980  TemplateArgumentList *TemplArgList
981  = TemplateArgumentList::CreateCopy(C, TemplArgs);
982  TemplateArgumentListInfo TemplArgsInfo(LAngleLoc, RAngleLoc);
983  for (unsigned i = 0, e = TemplArgLocs.size(); i != e; ++i)
984  TemplArgsInfo.addArgument(TemplArgLocs[i]);
985 
986  MemberSpecializationInfo *MSInfo = nullptr;
987  if (Record.readInt()) {
988  auto *FD = readDeclAs<FunctionDecl>();
989  auto TSK = (TemplateSpecializationKind)Record.readInt();
990  SourceLocation POI = readSourceLocation();
991 
992  MSInfo = new (C) MemberSpecializationInfo(FD, TSK);
993  MSInfo->setPointOfInstantiation(POI);
994  }
995 
998  C, FD, Template, TSK, TemplArgList,
999  HasTemplateArgumentsAsWritten ? &TemplArgsInfo : nullptr, POI,
1000  MSInfo);
1001  FD->TemplateOrSpecialization = FTInfo;
1002 
1003  if (FD->isCanonicalDecl()) { // if canonical add to template's set.
1004  // The template that contains the specializations set. It's not safe to
1005  // use getCanonicalDecl on Template since it may still be initializing.
1006  auto *CanonTemplate = readDeclAs<FunctionTemplateDecl>();
1007  // Get the InsertPos by FindNodeOrInsertPos() instead of calling
1008  // InsertNode(FTInfo) directly to avoid the getASTContext() call in
1009  // FunctionTemplateSpecializationInfo's Profile().
1010  // We avoid getASTContext because a decl in the parent hierarchy may
1011  // be initializing.
1012  llvm::FoldingSetNodeID ID;
1014  void *InsertPos = nullptr;
1015  FunctionTemplateDecl::Common *CommonPtr = CanonTemplate->getCommonPtr();
1016  FunctionTemplateSpecializationInfo *ExistingInfo =
1017  CommonPtr->Specializations.FindNodeOrInsertPos(ID, InsertPos);
1018  if (InsertPos)
1019  CommonPtr->Specializations.InsertNode(FTInfo, InsertPos);
1020  else {
1021  assert(Reader.getContext().getLangOpts().Modules &&
1022  "already deserialized this template specialization");
1023  mergeRedeclarable(FD, ExistingInfo->getFunction(), Redecl);
1024  }
1025  }
1026  break;
1027  }
1029  // Templates.
1030  UnresolvedSet<8> TemplDecls;
1031  unsigned NumTemplates = Record.readInt();
1032  while (NumTemplates--)
1033  TemplDecls.addDecl(readDeclAs<NamedDecl>());
1034 
1035  // Templates args.
1036  TemplateArgumentListInfo TemplArgs;
1037  unsigned NumArgs = Record.readInt();
1038  while (NumArgs--)
1039  TemplArgs.addArgument(Record.readTemplateArgumentLoc());
1040  TemplArgs.setLAngleLoc(readSourceLocation());
1041  TemplArgs.setRAngleLoc(readSourceLocation());
1042 
1043  FD->setDependentTemplateSpecialization(Reader.getContext(),
1044  TemplDecls, TemplArgs);
1045  // These are not merged; we don't need to merge redeclarations of dependent
1046  // template friends.
1047  break;
1048  }
1049  }
1050 
1051  // Defer calling `setPure` until merging above has guaranteed we've set
1052  // `DefinitionData` (as this will need to access it).
1053  FD->setPure(Pure);
1054 
1055  // Read in the parameters.
1056  unsigned NumParams = Record.readInt();
1058  Params.reserve(NumParams);
1059  for (unsigned I = 0; I != NumParams; ++I)
1060  Params.push_back(readDeclAs<ParmVarDecl>());
1061  FD->setParams(Reader.getContext(), Params);
1062 }
1063 
1065  VisitNamedDecl(MD);
1066  if (Record.readInt()) {
1067  // Load the body on-demand. Most clients won't care, because method
1068  // definitions rarely show up in headers.
1069  Reader.PendingBodies[MD] = GetCurrentCursorOffset();
1070  HasPendingBody = true;
1071  }
1072  MD->setSelfDecl(readDeclAs<ImplicitParamDecl>());
1073  MD->setCmdDecl(readDeclAs<ImplicitParamDecl>());
1074  MD->setInstanceMethod(Record.readInt());
1075  MD->setVariadic(Record.readInt());
1076  MD->setPropertyAccessor(Record.readInt());
1077  MD->setSynthesizedAccessorStub(Record.readInt());
1078  MD->setDefined(Record.readInt());
1079  MD->setOverriding(Record.readInt());
1080  MD->setHasSkippedBody(Record.readInt());
1081 
1082  MD->setIsRedeclaration(Record.readInt());
1083  MD->setHasRedeclaration(Record.readInt());
1084  if (MD->hasRedeclaration())
1085  Reader.getContext().setObjCMethodRedeclaration(MD,
1086  readDeclAs<ObjCMethodDecl>());
1087 
1089  MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record.readInt());
1090  MD->setRelatedResultType(Record.readInt());
1091  MD->setReturnType(Record.readType());
1092  MD->setReturnTypeSourceInfo(readTypeSourceInfo());
1093  MD->DeclEndLoc = readSourceLocation();
1094  unsigned NumParams = Record.readInt();
1096  Params.reserve(NumParams);
1097  for (unsigned I = 0; I != NumParams; ++I)
1098  Params.push_back(readDeclAs<ParmVarDecl>());
1099 
1100  MD->setSelLocsKind((SelectorLocationsKind)Record.readInt());
1101  unsigned NumStoredSelLocs = Record.readInt();
1103  SelLocs.reserve(NumStoredSelLocs);
1104  for (unsigned i = 0; i != NumStoredSelLocs; ++i)
1105  SelLocs.push_back(readSourceLocation());
1106 
1107  MD->setParamsAndSelLocs(Reader.getContext(), Params, SelLocs);
1108 }
1109 
1111  VisitTypedefNameDecl(D);
1112 
1113  D->Variance = Record.readInt();
1114  D->Index = Record.readInt();
1115  D->VarianceLoc = readSourceLocation();
1116  D->ColonLoc = readSourceLocation();
1117 }
1118 
1120  VisitNamedDecl(CD);
1121  CD->setAtStartLoc(readSourceLocation());
1122  CD->setAtEndRange(readSourceRange());
1123 }
1124 
1126  unsigned numParams = Record.readInt();
1127  if (numParams == 0)
1128  return nullptr;
1129 
1131  typeParams.reserve(numParams);
1132  for (unsigned i = 0; i != numParams; ++i) {
1133  auto *typeParam = readDeclAs<ObjCTypeParamDecl>();
1134  if (!typeParam)
1135  return nullptr;
1136 
1137  typeParams.push_back(typeParam);
1138  }
1139 
1140  SourceLocation lAngleLoc = readSourceLocation();
1141  SourceLocation rAngleLoc = readSourceLocation();
1142 
1143  return ObjCTypeParamList::create(Reader.getContext(), lAngleLoc,
1144  typeParams, rAngleLoc);
1145 }
1146 
1147 void ASTDeclReader::ReadObjCDefinitionData(
1148  struct ObjCInterfaceDecl::DefinitionData &Data) {
1149  // Read the superclass.
1150  Data.SuperClassTInfo = readTypeSourceInfo();
1151 
1152  Data.EndLoc = readSourceLocation();
1153  Data.HasDesignatedInitializers = Record.readInt();
1154 
1155  // Read the directly referenced protocols and their SourceLocations.
1156  unsigned NumProtocols = Record.readInt();
1158  Protocols.reserve(NumProtocols);
1159  for (unsigned I = 0; I != NumProtocols; ++I)
1160  Protocols.push_back(readDeclAs<ObjCProtocolDecl>());
1162  ProtoLocs.reserve(NumProtocols);
1163  for (unsigned I = 0; I != NumProtocols; ++I)
1164  ProtoLocs.push_back(readSourceLocation());
1165  Data.ReferencedProtocols.set(Protocols.data(), NumProtocols, ProtoLocs.data(),
1166  Reader.getContext());
1167 
1168  // Read the transitive closure of protocols referenced by this class.
1169  NumProtocols = Record.readInt();
1170  Protocols.clear();
1171  Protocols.reserve(NumProtocols);
1172  for (unsigned I = 0; I != NumProtocols; ++I)
1173  Protocols.push_back(readDeclAs<ObjCProtocolDecl>());
1174  Data.AllReferencedProtocols.set(Protocols.data(), NumProtocols,
1175  Reader.getContext());
1176 }
1177 
1178 void ASTDeclReader::MergeDefinitionData(ObjCInterfaceDecl *D,
1179  struct ObjCInterfaceDecl::DefinitionData &&NewDD) {
1180  struct ObjCInterfaceDecl::DefinitionData &DD = D->data();
1181  if (DD.Definition != NewDD.Definition) {
1182  Reader.MergedDeclContexts.insert(
1183  std::make_pair(NewDD.Definition, DD.Definition));
1184  Reader.mergeDefinitionVisibility(DD.Definition, NewDD.Definition);
1185  }
1186 
1187  // FIXME: odr checking?
1188 }
1189 
1191  RedeclarableResult Redecl = VisitRedeclarable(ID);
1192  VisitObjCContainerDecl(ID);
1193  DeferredTypeID = Record.getGlobalTypeID(Record.readInt());
1194  mergeRedeclarable(ID, Redecl);
1195 
1196  ID->TypeParamList = ReadObjCTypeParamList();
1197  if (Record.readInt()) {
1198  // Read the definition.
1199  ID->allocateDefinitionData();
1200 
1201  ReadObjCDefinitionData(ID->data());
1202  ObjCInterfaceDecl *Canon = ID->getCanonicalDecl();
1203  if (Canon->Data.getPointer()) {
1204  // If we already have a definition, keep the definition invariant and
1205  // merge the data.
1206  MergeDefinitionData(Canon, std::move(ID->data()));
1207  ID->Data = Canon->Data;
1208  } else {
1209  // Set the definition data of the canonical declaration, so other
1210  // redeclarations will see it.
1211  ID->getCanonicalDecl()->Data = ID->Data;
1212 
1213  // We will rebuild this list lazily.
1214  ID->setIvarList(nullptr);
1215  }
1216 
1217  // Note that we have deserialized a definition.
1218  Reader.PendingDefinitions.insert(ID);
1219 
1220  // Note that we've loaded this Objective-C class.
1221  Reader.ObjCClassesLoaded.push_back(ID);
1222  } else {
1223  ID->Data = ID->getCanonicalDecl()->Data;
1224  }
1225 }
1226 
1228  VisitFieldDecl(IVD);
1229  IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record.readInt());
1230  // This field will be built lazily.
1231  IVD->setNextIvar(nullptr);
1232  bool synth = Record.readInt();
1233  IVD->setSynthesize(synth);
1234 }
1235 
1236 void ASTDeclReader::ReadObjCDefinitionData(
1237  struct ObjCProtocolDecl::DefinitionData &Data) {
1238  unsigned NumProtoRefs = Record.readInt();
1240  ProtoRefs.reserve(NumProtoRefs);
1241  for (unsigned I = 0; I != NumProtoRefs; ++I)
1242  ProtoRefs.push_back(readDeclAs<ObjCProtocolDecl>());
1244  ProtoLocs.reserve(NumProtoRefs);
1245  for (unsigned I = 0; I != NumProtoRefs; ++I)
1246  ProtoLocs.push_back(readSourceLocation());
1247  Data.ReferencedProtocols.set(ProtoRefs.data(), NumProtoRefs,
1248  ProtoLocs.data(), Reader.getContext());
1249 }
1250 
1251 void ASTDeclReader::MergeDefinitionData(ObjCProtocolDecl *D,
1252  struct ObjCProtocolDecl::DefinitionData &&NewDD) {
1253  // FIXME: odr checking?
1254 }
1255 
1257  RedeclarableResult Redecl = VisitRedeclarable(PD);
1258  VisitObjCContainerDecl(PD);
1259  mergeRedeclarable(PD, Redecl);
1260 
1261  if (Record.readInt()) {
1262  // Read the definition.
1263  PD->allocateDefinitionData();
1264 
1265  ReadObjCDefinitionData(PD->data());
1266 
1267  ObjCProtocolDecl *Canon = PD->getCanonicalDecl();
1268  if (Canon->Data.getPointer()) {
1269  // If we already have a definition, keep the definition invariant and
1270  // merge the data.
1271  MergeDefinitionData(Canon, std::move(PD->data()));
1272  PD->Data = Canon->Data;
1273  } else {
1274  // Set the definition data of the canonical declaration, so other
1275  // redeclarations will see it.
1276  PD->getCanonicalDecl()->Data = PD->Data;
1277  }
1278  // Note that we have deserialized a definition.
1279  Reader.PendingDefinitions.insert(PD);
1280  } else {
1281  PD->Data = PD->getCanonicalDecl()->Data;
1282  }
1283 }
1284 
1286  VisitFieldDecl(FD);
1287 }
1288 
1290  VisitObjCContainerDecl(CD);
1291  CD->setCategoryNameLoc(readSourceLocation());
1292  CD->setIvarLBraceLoc(readSourceLocation());
1293  CD->setIvarRBraceLoc(readSourceLocation());
1294 
1295  // Note that this category has been deserialized. We do this before
1296  // deserializing the interface declaration, so that it will consider this
1297  /// category.
1298  Reader.CategoriesDeserialized.insert(CD);
1299 
1300  CD->ClassInterface = readDeclAs<ObjCInterfaceDecl>();
1301  CD->TypeParamList = ReadObjCTypeParamList();
1302  unsigned NumProtoRefs = Record.readInt();
1304  ProtoRefs.reserve(NumProtoRefs);
1305  for (unsigned I = 0; I != NumProtoRefs; ++I)
1306  ProtoRefs.push_back(readDeclAs<ObjCProtocolDecl>());
1308  ProtoLocs.reserve(NumProtoRefs);
1309  for (unsigned I = 0; I != NumProtoRefs; ++I)
1310  ProtoLocs.push_back(readSourceLocation());
1311  CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
1312  Reader.getContext());
1313 
1314  // Protocols in the class extension belong to the class.
1315  if (NumProtoRefs > 0 && CD->ClassInterface && CD->IsClassExtension())
1316  CD->ClassInterface->mergeClassExtensionProtocolList(
1317  (ObjCProtocolDecl *const *)ProtoRefs.data(), NumProtoRefs,
1318  Reader.getContext());
1319 }
1320 
1322  VisitNamedDecl(CAD);
1323  CAD->setClassInterface(readDeclAs<ObjCInterfaceDecl>());
1324 }
1325 
1327  VisitNamedDecl(D);
1328  D->setAtLoc(readSourceLocation());
1329  D->setLParenLoc(readSourceLocation());
1330  QualType T = Record.readType();
1331  TypeSourceInfo *TSI = readTypeSourceInfo();
1332  D->setType(T, TSI);
1333  D->setPropertyAttributes((ObjCPropertyAttribute::Kind)Record.readInt());
1335  (ObjCPropertyAttribute::Kind)Record.readInt());
1337  (ObjCPropertyDecl::PropertyControl)Record.readInt());
1338  DeclarationName GetterName = Record.readDeclarationName();
1339  SourceLocation GetterLoc = readSourceLocation();
1340  D->setGetterName(GetterName.getObjCSelector(), GetterLoc);
1341  DeclarationName SetterName = Record.readDeclarationName();
1342  SourceLocation SetterLoc = readSourceLocation();
1343  D->setSetterName(SetterName.getObjCSelector(), SetterLoc);
1344  D->setGetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1345  D->setSetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1346  D->setPropertyIvarDecl(readDeclAs<ObjCIvarDecl>());
1347 }
1348 
1350  VisitObjCContainerDecl(D);
1351  D->setClassInterface(readDeclAs<ObjCInterfaceDecl>());
1352 }
1353 
1355  VisitObjCImplDecl(D);
1356  D->CategoryNameLoc = readSourceLocation();
1357 }
1358 
1360  VisitObjCImplDecl(D);
1361  D->setSuperClass(readDeclAs<ObjCInterfaceDecl>());
1362  D->SuperLoc = readSourceLocation();
1363  D->setIvarLBraceLoc(readSourceLocation());
1364  D->setIvarRBraceLoc(readSourceLocation());
1365  D->setHasNonZeroConstructors(Record.readInt());
1366  D->setHasDestructors(Record.readInt());
1367  D->NumIvarInitializers = Record.readInt();
1368  if (D->NumIvarInitializers)
1369  D->IvarInitializers = ReadGlobalOffset();
1370 }
1371 
1373  VisitDecl(D);
1374  D->setAtLoc(readSourceLocation());
1375  D->setPropertyDecl(readDeclAs<ObjCPropertyDecl>());
1376  D->PropertyIvarDecl = readDeclAs<ObjCIvarDecl>();
1377  D->IvarLoc = readSourceLocation();
1378  D->setGetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1379  D->setSetterMethodDecl(readDeclAs<ObjCMethodDecl>());
1380  D->setGetterCXXConstructor(Record.readExpr());
1381  D->setSetterCXXAssignment(Record.readExpr());
1382 }
1383 
1385  VisitDeclaratorDecl(FD);
1386  FD->Mutable = Record.readInt();
1387 
1388  if (auto ISK = static_cast<FieldDecl::InitStorageKind>(Record.readInt())) {
1389  FD->InitStorage.setInt(ISK);
1390  FD->InitStorage.setPointer(ISK == FieldDecl::ISK_CapturedVLAType
1391  ? Record.readType().getAsOpaquePtr()
1392  : Record.readExpr());
1393  }
1394 
1395  if (auto *BW = Record.readExpr())
1396  FD->setBitWidth(BW);
1397 
1398  if (!FD->getDeclName()) {
1399  if (auto *Tmpl = readDeclAs<FieldDecl>())
1400  Reader.getContext().setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
1401  }
1402  mergeMergeable(FD);
1403 }
1404 
1406  VisitDeclaratorDecl(PD);
1407  PD->GetterId = Record.readIdentifier();
1408  PD->SetterId = Record.readIdentifier();
1409 }
1410 
1412  VisitValueDecl(D);
1413  D->PartVal.Part1 = Record.readInt();
1414  D->PartVal.Part2 = Record.readInt();
1415  D->PartVal.Part3 = Record.readInt();
1416  for (auto &C : D->PartVal.Part4And5)
1417  C = Record.readInt();
1418 
1419  // Add this GUID to the AST context's lookup structure, and merge if needed.
1420  if (MSGuidDecl *Existing = Reader.getContext().MSGuidDecls.GetOrInsertNode(D))
1421  Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());
1422 }
1423 
1425  VisitValueDecl(D);
1426  D->Value = Record.readAPValue();
1427 
1428  // Add this template parameter object to the AST context's lookup structure,
1429  // and merge if needed.
1430  if (TemplateParamObjectDecl *Existing =
1431  Reader.getContext().TemplateParamObjectDecls.GetOrInsertNode(D))
1432  Reader.getContext().setPrimaryMergedDecl(D, Existing->getCanonicalDecl());
1433 }
1434 
1436  VisitValueDecl(FD);
1437 
1438  FD->ChainingSize = Record.readInt();
1439  assert(FD->ChainingSize >= 2 && "Anonymous chaining must be >= 2");
1440  FD->Chaining = new (Reader.getContext())NamedDecl*[FD->ChainingSize];
1441 
1442  for (unsigned I = 0; I != FD->ChainingSize; ++I)
1443  FD->Chaining[I] = readDeclAs<NamedDecl>();
1444 
1445  mergeMergeable(FD);
1446 }
1447 
1448 ASTDeclReader::RedeclarableResult ASTDeclReader::VisitVarDeclImpl(VarDecl *VD) {
1449  RedeclarableResult Redecl = VisitRedeclarable(VD);
1450  VisitDeclaratorDecl(VD);
1451 
1452  VD->VarDeclBits.SClass = (StorageClass)Record.readInt();
1453  VD->VarDeclBits.TSCSpec = Record.readInt();
1454  VD->VarDeclBits.InitStyle = Record.readInt();
1455  VD->VarDeclBits.ARCPseudoStrong = Record.readInt();
1456  if (!isa<ParmVarDecl>(VD)) {
1457  VD->NonParmVarDeclBits.IsThisDeclarationADemotedDefinition =
1458  Record.readInt();
1459  VD->NonParmVarDeclBits.ExceptionVar = Record.readInt();
1460  VD->NonParmVarDeclBits.NRVOVariable = Record.readInt();
1461  VD->NonParmVarDeclBits.CXXForRangeDecl = Record.readInt();
1462  VD->NonParmVarDeclBits.ObjCForDecl = Record.readInt();
1463  VD->NonParmVarDeclBits.IsInline = Record.readInt();
1464  VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
1465  VD->NonParmVarDeclBits.IsConstexpr = Record.readInt();
1466  VD->NonParmVarDeclBits.IsInitCapture = Record.readInt();
1467  VD->NonParmVarDeclBits.PreviousDeclInSameBlockScope = Record.readInt();
1468  VD->NonParmVarDeclBits.ImplicitParamKind = Record.readInt();
1469  VD->NonParmVarDeclBits.EscapingByref = Record.readInt();
1470  }
1471  auto VarLinkage = Linkage(Record.readInt());
1472  VD->setCachedLinkage(VarLinkage);
1473 
1474  // Reconstruct the one piece of the IdentifierNamespace that we need.
1475  if (VD->getStorageClass() == SC_Extern && VarLinkage != NoLinkage &&
1477  VD->setLocalExternDecl();
1478 
1479  if (uint64_t Val = Record.readInt()) {
1480  VD->setInit(Record.readExpr());
1481  if (Val != 1) {
1482  EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
1483  Eval->HasConstantInitialization = (Val & 2) != 0;
1484  Eval->HasConstantDestruction = (Val & 4) != 0;
1485  }
1486  }
1487 
1488  if (VD->hasAttr<BlocksAttr>() && VD->getType()->getAsCXXRecordDecl()) {
1489  Expr *CopyExpr = Record.readExpr();
1490  if (CopyExpr)
1491  Reader.getContext().setBlockVarCopyInit(VD, CopyExpr, Record.readInt());
1492  }
1493 
1494  if (VD->getStorageDuration() == SD_Static && Record.readInt()) {
1495  Reader.DefinitionSource[VD] =
1496  Loc.F->Kind == ModuleKind::MK_MainFile ||
1497  Reader.getContext().getLangOpts().BuildingPCHWithObjectFile;
1498  }
1499 
1500  enum VarKind {
1501  VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
1502  };
1503  switch ((VarKind)Record.readInt()) {
1504  case VarNotTemplate:
1505  // Only true variables (not parameters or implicit parameters) can be
1506  // merged; the other kinds are not really redeclarable at all.
1507  if (!isa<ParmVarDecl>(VD) && !isa<ImplicitParamDecl>(VD) &&
1508  !isa<VarTemplateSpecializationDecl>(VD))
1509  mergeRedeclarable(VD, Redecl);
1510  break;
1511  case VarTemplate:
1512  // Merged when we merge the template.
1513  VD->setDescribedVarTemplate(readDeclAs<VarTemplateDecl>());
1514  break;
1515  case StaticDataMemberSpecialization: { // HasMemberSpecializationInfo.
1516  auto *Tmpl = readDeclAs<VarDecl>();
1517  auto TSK = (TemplateSpecializationKind)Record.readInt();
1518  SourceLocation POI = readSourceLocation();
1519  Reader.getContext().setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
1520  mergeRedeclarable(VD, Redecl);
1521  break;
1522  }
1523  }
1524 
1525  return Redecl;
1526 }
1527 
1529  VisitVarDecl(PD);
1530 }
1531 
1533  VisitVarDecl(PD);
1534  unsigned isObjCMethodParam = Record.readInt();
1535  unsigned scopeDepth = Record.readInt();
1536  unsigned scopeIndex = Record.readInt();
1537  unsigned declQualifier = Record.readInt();
1538  if (isObjCMethodParam) {
1539  assert(scopeDepth == 0);
1540  PD->setObjCMethodScopeInfo(scopeIndex);
1541  PD->ParmVarDeclBits.ScopeDepthOrObjCQuals = declQualifier;
1542  } else {
1543  PD->setScopeInfo(scopeDepth, scopeIndex);
1544  }
1545  PD->ParmVarDeclBits.IsKNRPromoted = Record.readInt();
1546  PD->ParmVarDeclBits.HasInheritedDefaultArg = Record.readInt();
1547  if (Record.readInt()) // hasUninstantiatedDefaultArg.
1548  PD->setUninstantiatedDefaultArg(Record.readExpr());
1549 
1550  // FIXME: If this is a redeclaration of a function from another module, handle
1551  // inheritance of default arguments.
1552 }
1553 
1555  VisitVarDecl(DD);
1556  auto **BDs = DD->getTrailingObjects<BindingDecl *>();
1557  for (unsigned I = 0; I != DD->NumBindings; ++I) {
1558  BDs[I] = readDeclAs<BindingDecl>();
1559  BDs[I]->setDecomposedDecl(DD);
1560  }
1561 }
1562 
1564  VisitValueDecl(BD);
1565  BD->Binding = Record.readExpr();
1566 }
1567 
1569  VisitDecl(AD);
1570  AD->setAsmString(cast<StringLiteral>(Record.readExpr()));
1571  AD->setRParenLoc(readSourceLocation());
1572 }
1573 
1575  VisitDecl(BD);
1576  BD->setBody(cast_or_null<CompoundStmt>(Record.readStmt()));
1577  BD->setSignatureAsWritten(readTypeSourceInfo());
1578  unsigned NumParams = Record.readInt();
1580  Params.reserve(NumParams);
1581  for (unsigned I = 0; I != NumParams; ++I)
1582  Params.push_back(readDeclAs<ParmVarDecl>());
1583  BD->setParams(Params);
1584 
1585  BD->setIsVariadic(Record.readInt());
1586  BD->setBlockMissingReturnType(Record.readInt());
1587  BD->setIsConversionFromLambda(Record.readInt());
1588  BD->setDoesNotEscape(Record.readInt());
1589  BD->setCanAvoidCopyToHeap(Record.readInt());
1590 
1591  bool capturesCXXThis = Record.readInt();
1592  unsigned numCaptures = Record.readInt();
1594  captures.reserve(numCaptures);
1595  for (unsigned i = 0; i != numCaptures; ++i) {
1596  auto *decl = readDeclAs<VarDecl>();
1597  unsigned flags = Record.readInt();
1598  bool byRef = (flags & 1);
1599  bool nested = (flags & 2);
1600  Expr *copyExpr = ((flags & 4) ? Record.readExpr() : nullptr);
1601 
1602  captures.push_back(BlockDecl::Capture(decl, byRef, nested, copyExpr));
1603  }
1604  BD->setCaptures(Reader.getContext(), captures, capturesCXXThis);
1605 }
1606 
1608  VisitDecl(CD);
1609  unsigned ContextParamPos = Record.readInt();
1610  CD->setNothrow(Record.readInt() != 0);
1611  // Body is set by VisitCapturedStmt.
1612  for (unsigned I = 0; I < CD->NumParams; ++I) {
1613  if (I != ContextParamPos)
1614  CD->setParam(I, readDeclAs<ImplicitParamDecl>());
1615  else
1616  CD->setContextParam(I, readDeclAs<ImplicitParamDecl>());
1617  }
1618 }
1619 
1621  VisitDecl(D);
1622  D->setLanguage((LinkageSpecDecl::LanguageIDs)Record.readInt());
1623  D->setExternLoc(readSourceLocation());
1624  D->setRBraceLoc(readSourceLocation());
1625 }
1626 
1628  VisitDecl(D);
1629  D->RBraceLoc = readSourceLocation();
1630 }
1631 
1633  VisitNamedDecl(D);
1634  D->setLocStart(readSourceLocation());
1635 }
1636 
1638  RedeclarableResult Redecl = VisitRedeclarable(D);
1639  VisitNamedDecl(D);
1640  D->setInline(Record.readInt());
1641  D->LocStart = readSourceLocation();
1642  D->RBraceLoc = readSourceLocation();
1643 
1644  // Defer loading the anonymous namespace until we've finished merging
1645  // this namespace; loading it might load a later declaration of the
1646  // same namespace, and we have an invariant that older declarations
1647  // get merged before newer ones try to merge.
1648  GlobalDeclID AnonNamespace = 0;
1649  if (Redecl.getFirstID() == ThisDeclID) {
1650  AnonNamespace = readDeclID();
1651  } else {
1652  // Link this namespace back to the first declaration, which has already
1653  // been deserialized.
1654  D->AnonOrFirstNamespaceAndInline.setPointer(D->getFirstDecl());
1655  }
1656 
1657  mergeRedeclarable(D, Redecl);
1658 
1659  if (AnonNamespace) {
1660  // Each module has its own anonymous namespace, which is disjoint from
1661  // any other module's anonymous namespaces, so don't attach the anonymous
1662  // namespace at all.
1663  auto *Anon = cast<NamespaceDecl>(Reader.GetDecl(AnonNamespace));
1664  if (!Record.isModule())
1665  D->setAnonymousNamespace(Anon);
1666  }
1667 }
1668 
1670  RedeclarableResult Redecl = VisitRedeclarable(D);
1671  VisitNamedDecl(D);
1672  D->NamespaceLoc = readSourceLocation();
1673  D->IdentLoc = readSourceLocation();
1674  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1675  D->Namespace = readDeclAs<NamedDecl>();
1676  mergeRedeclarable(D, Redecl);
1677 }
1678 
1680  VisitNamedDecl(D);
1681  D->setUsingLoc(readSourceLocation());
1682  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1683  D->DNLoc = Record.readDeclarationNameLoc(D->getDeclName());
1684  D->FirstUsingShadow.setPointer(readDeclAs<UsingShadowDecl>());
1685  D->setTypename(Record.readInt());
1686  if (auto *Pattern = readDeclAs<NamedDecl>())
1687  Reader.getContext().setInstantiatedFromUsingDecl(D, Pattern);
1688  mergeMergeable(D);
1689 }
1690 
1692  VisitNamedDecl(D);
1693  D->setUsingLoc(readSourceLocation());
1694  D->setEnumLoc(readSourceLocation());
1695  D->Enum = readDeclAs<EnumDecl>();
1696  D->FirstUsingShadow.setPointer(readDeclAs<UsingShadowDecl>());
1697  if (auto *Pattern = readDeclAs<UsingEnumDecl>())
1698  Reader.getContext().setInstantiatedFromUsingEnumDecl(D, Pattern);
1699  mergeMergeable(D);
1700 }
1701 
1703  VisitNamedDecl(D);
1704  D->InstantiatedFrom = readDeclAs<NamedDecl>();
1705  auto **Expansions = D->getTrailingObjects<NamedDecl *>();
1706  for (unsigned I = 0; I != D->NumExpansions; ++I)
1707  Expansions[I] = readDeclAs<NamedDecl>();
1708  mergeMergeable(D);
1709 }
1710 
1712  RedeclarableResult Redecl = VisitRedeclarable(D);
1713  VisitNamedDecl(D);
1714  D->Underlying = readDeclAs<NamedDecl>();
1715  D->IdentifierNamespace = Record.readInt();
1716  D->UsingOrNextShadow = readDeclAs<NamedDecl>();
1717  auto *Pattern = readDeclAs<UsingShadowDecl>();
1718  if (Pattern)
1719  Reader.getContext().setInstantiatedFromUsingShadowDecl(D, Pattern);
1720  mergeRedeclarable(D, Redecl);
1721 }
1722 
1725  VisitUsingShadowDecl(D);
1726  D->NominatedBaseClassShadowDecl = readDeclAs<ConstructorUsingShadowDecl>();
1727  D->ConstructedBaseClassShadowDecl = readDeclAs<ConstructorUsingShadowDecl>();
1728  D->IsVirtual = Record.readInt();
1729 }
1730 
1732  VisitNamedDecl(D);
1733  D->UsingLoc = readSourceLocation();
1734  D->NamespaceLoc = readSourceLocation();
1735  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1736  D->NominatedNamespace = readDeclAs<NamedDecl>();
1737  D->CommonAncestor = readDeclAs<DeclContext>();
1738 }
1739 
1741  VisitValueDecl(D);
1742  D->setUsingLoc(readSourceLocation());
1743  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1744  D->DNLoc = Record.readDeclarationNameLoc(D->getDeclName());
1745  D->EllipsisLoc = readSourceLocation();
1746  mergeMergeable(D);
1747 }
1748 
1751  VisitTypeDecl(D);
1752  D->TypenameLocation = readSourceLocation();
1753  D->QualifierLoc = Record.readNestedNameSpecifierLoc();
1754  D->EllipsisLoc = readSourceLocation();
1755  mergeMergeable(D);
1756 }
1757 
1760  VisitNamedDecl(D);
1761 }
1762 
1763 void ASTDeclReader::ReadCXXDefinitionData(
1764  struct CXXRecordDecl::DefinitionData &Data, const CXXRecordDecl *D) {
1765  #define FIELD(Name, Width, Merge) \
1766  Data.Name = Record.readInt();
1767  #include "clang/AST/CXXRecordDeclDefinitionBits.def"
1768 
1769  // Note: the caller has deserialized the IsLambda bit already.
1770  Data.ODRHash = Record.readInt();
1771  Data.HasODRHash = true;
1772 
1773  if (Record.readInt()) {
1774  Reader.DefinitionSource[D] =
1775  Loc.F->Kind == ModuleKind::MK_MainFile ||
1776  Reader.getContext().getLangOpts().BuildingPCHWithObjectFile;
1777  }
1778 
1779  Data.NumBases = Record.readInt();
1780  if (Data.NumBases)
1781  Data.Bases = ReadGlobalOffset();
1782  Data.NumVBases = Record.readInt();
1783  if (Data.NumVBases)
1784  Data.VBases = ReadGlobalOffset();
1785 
1786  Record.readUnresolvedSet(Data.Conversions);
1787  Data.ComputedVisibleConversions = Record.readInt();
1788  if (Data.ComputedVisibleConversions)
1789  Record.readUnresolvedSet(Data.VisibleConversions);
1790  assert(Data.Definition && "Data.Definition should be already set!");
1791  Data.FirstFriend = readDeclID();
1792 
1793  if (Data.IsLambda) {
1794  using Capture = LambdaCapture;
1795 
1796  auto &Lambda = static_cast<CXXRecordDecl::LambdaDefinitionData &>(Data);
1797  Lambda.Dependent = Record.readInt();
1798  Lambda.IsGenericLambda = Record.readInt();
1799  Lambda.CaptureDefault = Record.readInt();
1800  Lambda.NumCaptures = Record.readInt();
1801  Lambda.NumExplicitCaptures = Record.readInt();
1802  Lambda.HasKnownInternalLinkage = Record.readInt();
1803  Lambda.ManglingNumber = Record.readInt();
1804  D->setDeviceLambdaManglingNumber(Record.readInt());
1805  Lambda.ContextDecl = readDeclID();
1806  Lambda.Captures = (Capture *)Reader.getContext().Allocate(
1807  sizeof(Capture) * Lambda.NumCaptures);
1808  Capture *ToCapture = Lambda.Captures;
1809  Lambda.MethodTyInfo = readTypeSourceInfo();
1810  for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
1811  SourceLocation Loc = readSourceLocation();
1812  bool IsImplicit = Record.readInt();
1813  auto Kind = static_cast<LambdaCaptureKind>(Record.readInt());
1814  switch (Kind) {
1815  case LCK_StarThis:
1816  case LCK_This:
1817  case LCK_VLAType:
1818  *ToCapture++ = Capture(Loc, IsImplicit, Kind, nullptr,SourceLocation());
1819  break;
1820  case LCK_ByCopy:
1821  case LCK_ByRef:
1822  auto *Var = readDeclAs<VarDecl>();
1823  SourceLocation EllipsisLoc = readSourceLocation();
1824  *ToCapture++ = Capture(Loc, IsImplicit, Kind, Var, EllipsisLoc);
1825  break;
1826  }
1827  }
1828  }
1829 }
1830 
1831 void ASTDeclReader::MergeDefinitionData(
1832  CXXRecordDecl *D, struct CXXRecordDecl::DefinitionData &&MergeDD) {
1833  assert(D->DefinitionData &&
1834  "merging class definition into non-definition");
1835  auto &DD = *D->DefinitionData;
1836 
1837  if (DD.Definition != MergeDD.Definition) {
1838  // Track that we merged the definitions.
1839  Reader.MergedDeclContexts.insert(std::make_pair(MergeDD.Definition,
1840  DD.Definition));
1841  Reader.PendingDefinitions.erase(MergeDD.Definition);
1842  MergeDD.Definition->setCompleteDefinition(false);
1843  Reader.mergeDefinitionVisibility(DD.Definition, MergeDD.Definition);
1844  assert(Reader.Lookups.find(MergeDD.Definition) == Reader.Lookups.end() &&
1845  "already loaded pending lookups for merged definition");
1846  }
1847 
1848  auto PFDI = Reader.PendingFakeDefinitionData.find(&DD);
1849  if (PFDI != Reader.PendingFakeDefinitionData.end() &&
1850  PFDI->second == ASTReader::PendingFakeDefinitionKind::Fake) {
1851  // We faked up this definition data because we found a class for which we'd
1852  // not yet loaded the definition. Replace it with the real thing now.
1853  assert(!DD.IsLambda && !MergeDD.IsLambda && "faked up lambda definition?");
1854  PFDI->second = ASTReader::PendingFakeDefinitionKind::FakeLoaded;
1855 
1856  // Don't change which declaration is the definition; that is required
1857  // to be invariant once we select it.
1858  auto *Def = DD.Definition;
1859  DD = std::move(MergeDD);
1860  DD.Definition = Def;
1861  return;
1862  }
1863 
1864  bool DetectedOdrViolation = false;
1865 
1866  #define FIELD(Name, Width, Merge) Merge(Name)
1867  #define MERGE_OR(Field) DD.Field |= MergeDD.Field;
1868  #define NO_MERGE(Field) \
1869  DetectedOdrViolation |= DD.Field != MergeDD.Field; \
1870  MERGE_OR(Field)
1871  #include "clang/AST/CXXRecordDeclDefinitionBits.def"
1872  NO_MERGE(IsLambda)
1873  #undef NO_MERGE
1874  #undef MERGE_OR
1875 
1876  if (DD.NumBases != MergeDD.NumBases || DD.NumVBases != MergeDD.NumVBases)
1877  DetectedOdrViolation = true;
1878  // FIXME: Issue a diagnostic if the base classes don't match when we come
1879  // to lazily load them.
1880 
1881  // FIXME: Issue a diagnostic if the list of conversion functions doesn't
1882  // match when we come to lazily load them.
1883  if (MergeDD.ComputedVisibleConversions && !DD.ComputedVisibleConversions) {
1884  DD.VisibleConversions = std::move(MergeDD.VisibleConversions);
1885  DD.ComputedVisibleConversions = true;
1886  }
1887 
1888  // FIXME: Issue a diagnostic if FirstFriend doesn't match when we come to
1889  // lazily load it.
1890 
1891  if (DD.IsLambda) {
1892  // FIXME: ODR-checking for merging lambdas (this happens, for instance,
1893  // when they occur within the body of a function template specialization).
1894  }
1895 
1896  if (D->getODRHash() != MergeDD.ODRHash) {
1897  DetectedOdrViolation = true;
1898  }
1899 
1900  if (DetectedOdrViolation)
1901  Reader.PendingOdrMergeFailures[DD.Definition].push_back(
1902  {MergeDD.Definition, &MergeDD});
1903 }
1904 
1905 void ASTDeclReader::ReadCXXRecordDefinition(CXXRecordDecl *D, bool Update) {
1906  struct CXXRecordDecl::DefinitionData *DD;
1907  ASTContext &C = Reader.getContext();
1908 
1909  // Determine whether this is a lambda closure type, so that we can
1910  // allocate the appropriate DefinitionData structure.
1911  bool IsLambda = Record.readInt();
1912  if (IsLambda)
1913  DD = new (C) CXXRecordDecl::LambdaDefinitionData(D, nullptr, false, false,
1914  LCD_None);
1915  else
1916  DD = new (C) struct CXXRecordDecl::DefinitionData(D);
1917 
1918  CXXRecordDecl *Canon = D->getCanonicalDecl();
1919  // Set decl definition data before reading it, so that during deserialization
1920  // when we read CXXRecordDecl, it already has definition data and we don't
1921  // set fake one.
1922  if (!Canon->DefinitionData)
1923  Canon->DefinitionData = DD;
1924  D->DefinitionData = Canon->DefinitionData;
1925  ReadCXXDefinitionData(*DD, D);
1926 
1927  // We might already have a different definition for this record. This can
1928  // happen either because we're reading an update record, or because we've
1929  // already done some merging. Either way, just merge into it.
1930  if (Canon->DefinitionData != DD) {
1931  MergeDefinitionData(Canon, std::move(*DD));
1932  return;
1933  }
1934 
1935  // Mark this declaration as being a definition.
1936  D->setCompleteDefinition(true);
1937 
1938  // If this is not the first declaration or is an update record, we can have
1939  // other redeclarations already. Make a note that we need to propagate the
1940  // DefinitionData pointer onto them.
1941  if (Update || Canon != D)
1942  Reader.PendingDefinitions.insert(D);
1943 }
1944 
1945 ASTDeclReader::RedeclarableResult
1947  RedeclarableResult Redecl = VisitRecordDeclImpl(D);
1948 
1949  ASTContext &C = Reader.getContext();
1950 
1951  enum CXXRecKind {
1952  CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1953  };
1954  switch ((CXXRecKind)Record.readInt()) {
1955  case CXXRecNotTemplate:
1956  // Merged when we merge the folding set entry in the primary template.
1957  if (!isa<ClassTemplateSpecializationDecl>(D))
1958  mergeRedeclarable(D, Redecl);
1959  break;
1960  case CXXRecTemplate: {
1961  // Merged when we merge the template.
1962  auto *Template = readDeclAs<ClassTemplateDecl>();
1963  D->TemplateOrInstantiation = Template;
1964  if (!Template->getTemplatedDecl()) {
1965  // We've not actually loaded the ClassTemplateDecl yet, because we're
1966  // currently being loaded as its pattern. Rely on it to set up our
1967  // TypeForDecl (see VisitClassTemplateDecl).
1968  //
1969  // Beware: we do not yet know our canonical declaration, and may still
1970  // get merged once the surrounding class template has got off the ground.
1971  DeferredTypeID = 0;
1972  }
1973  break;
1974  }
1975  case CXXRecMemberSpecialization: {
1976  auto *RD = readDeclAs<CXXRecordDecl>();
1977  auto TSK = (TemplateSpecializationKind)Record.readInt();
1978  SourceLocation POI = readSourceLocation();
1979  MemberSpecializationInfo *MSI = new (C) MemberSpecializationInfo(RD, TSK);
1980  MSI->setPointOfInstantiation(POI);
1981  D->TemplateOrInstantiation = MSI;
1982  mergeRedeclarable(D, Redecl);
1983  break;
1984  }
1985  }
1986 
1987  bool WasDefinition = Record.readInt();
1988  if (WasDefinition)
1989  ReadCXXRecordDefinition(D, /*Update*/false);
1990  else
1991  // Propagate DefinitionData pointer from the canonical declaration.
1992  D->DefinitionData = D->getCanonicalDecl()->DefinitionData;
1993 
1994  // Lazily load the key function to avoid deserializing every method so we can
1995  // compute it.
1996  if (WasDefinition) {
1997  DeclID KeyFn = readDeclID();
1998  if (KeyFn && D->isCompleteDefinition())
1999  // FIXME: This is wrong for the ARM ABI, where some other module may have
2000  // made this function no longer be a key function. We need an update
2001  // record or similar for that case.
2002  C.KeyFunctions[D] = KeyFn;
2003  }
2004 
2005  return Redecl;
2006 }
2007 
2009  D->setExplicitSpecifier(Record.readExplicitSpec());
2010  D->Ctor = readDeclAs<CXXConstructorDecl>();
2011  VisitFunctionDecl(D);
2012  D->setIsCopyDeductionCandidate(Record.readInt());
2013 }
2014 
2016  VisitFunctionDecl(D);
2017 
2018  unsigned NumOverridenMethods = Record.readInt();
2019  if (D->isCanonicalDecl()) {
2020  while (NumOverridenMethods--) {
2021  // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
2022  // MD may be initializing.
2023  if (auto *MD = readDeclAs<CXXMethodDecl>())
2024  Reader.getContext().addOverriddenMethod(D, MD->getCanonicalDecl());
2025  }
2026  } else {
2027  // We don't care about which declarations this used to override; we get
2028  // the relevant information from the canonical declaration.
2029  Record.skipInts(NumOverridenMethods);
2030  }
2031 }
2032 
2034  // We need the inherited constructor information to merge the declaration,
2035  // so we have to read it before we call VisitCXXMethodDecl.
2036  D->setExplicitSpecifier(Record.readExplicitSpec());
2037  if (D->isInheritingConstructor()) {
2038  auto *Shadow = readDeclAs<ConstructorUsingShadowDecl>();
2039  auto *Ctor = readDeclAs<CXXConstructorDecl>();
2040  *D->getTrailingObjects<InheritedConstructor>() =
2041  InheritedConstructor(Shadow, Ctor);
2042  }
2043 
2044  VisitCXXMethodDecl(D);
2045 }
2046 
2048  VisitCXXMethodDecl(D);
2049 
2050  if (auto *OperatorDelete = readDeclAs<FunctionDecl>()) {
2051  CXXDestructorDecl *Canon = D->getCanonicalDecl();
2052  auto *ThisArg = Record.readExpr();
2053  // FIXME: Check consistency if we have an old and new operator delete.
2054  if (!Canon->OperatorDelete) {
2055  Canon->OperatorDelete = OperatorDelete;
2056  Canon->OperatorDeleteThisArg = ThisArg;
2057  }
2058  }
2059 }
2060 
2062  D->setExplicitSpecifier(Record.readExplicitSpec());
2063  VisitCXXMethodDecl(D);
2064 }
2065 
2067  VisitDecl(D);
2068  D->ImportedModule = readModule();
2069  D->setImportComplete(Record.readInt());
2070  auto *StoredLocs = D->getTrailingObjects<SourceLocation>();
2071  for (unsigned I = 0, N = Record.back(); I != N; ++I)
2072  StoredLocs[I] = readSourceLocation();
2073  Record.skipInts(1); // The number of stored source locations.
2074 }
2075 
2077  VisitDecl(D);
2078  D->setColonLoc(readSourceLocation());
2079 }
2080 
2082  VisitDecl(D);
2083  if (Record.readInt()) // hasFriendDecl
2084  D->Friend = readDeclAs<NamedDecl>();
2085  else
2086  D->Friend = readTypeSourceInfo();
2087  for (unsigned i = 0; i != D->NumTPLists; ++i)
2088  D->getTrailingObjects<TemplateParameterList *>()[i] =
2089  Record.readTemplateParameterList();
2090  D->NextFriend = readDeclID();
2091  D->UnsupportedFriend = (Record.readInt() != 0);
2092  D->FriendLoc = readSourceLocation();
2093 }
2094 
2096  VisitDecl(D);
2097  unsigned NumParams = Record.readInt();
2098  D->NumParams = NumParams;
2099  D->Params = new TemplateParameterList*[NumParams];
2100  for (unsigned i = 0; i != NumParams; ++i)
2101  D->Params[i] = Record.readTemplateParameterList();
2102  if (Record.readInt()) // HasFriendDecl
2103  D->Friend = readDeclAs<NamedDecl>();
2104  else
2105  D->Friend = readTypeSourceInfo();
2106  D->FriendLoc = readSourceLocation();
2107 }
2108 
2110  VisitNamedDecl(D);
2111 
2112  DeclID PatternID = readDeclID();
2113  auto *TemplatedDecl = cast_or_null<NamedDecl>(Reader.GetDecl(PatternID));
2114  TemplateParameterList *TemplateParams = Record.readTemplateParameterList();
2115  D->init(TemplatedDecl, TemplateParams);
2116 
2117  return PatternID;
2118 }
2119 
2121  VisitTemplateDecl(D);
2122  D->ConstraintExpr = Record.readExpr();
2123  mergeMergeable(D);
2124 }
2125 
2127 }
2128 
2129 ASTDeclReader::RedeclarableResult
2131  RedeclarableResult Redecl = VisitRedeclarable(D);
2132 
2133  // Make sure we've allocated the Common pointer first. We do this before
2134  // VisitTemplateDecl so that getCommonPtr() can be used during initialization.
2136  if (!CanonD->Common) {
2137  CanonD->Common = CanonD->newCommon(Reader.getContext());
2138  Reader.PendingDefinitions.insert(CanonD);
2139  }
2140  D->Common = CanonD->Common;
2141 
2142  // If this is the first declaration of the template, fill in the information
2143  // for the 'common' pointer.
2144  if (ThisDeclID == Redecl.getFirstID()) {
2145  if (auto *RTD = readDeclAs<RedeclarableTemplateDecl>()) {
2146  assert(RTD->getKind() == D->getKind() &&
2147  "InstantiatedFromMemberTemplate kind mismatch");
2149  if (Record.readInt())
2151  }
2152  }
2153 
2154  DeclID PatternID = VisitTemplateDecl(D);
2155  D->IdentifierNamespace = Record.readInt();
2156 
2157  mergeRedeclarable(D, Redecl, PatternID);
2158 
2159  // If we merged the template with a prior declaration chain, merge the common
2160  // pointer.
2161  // FIXME: Actually merge here, don't just overwrite.
2162  D->Common = D->getCanonicalDecl()->Common;
2163 
2164  return Redecl;
2165 }
2166 
2168  RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2169 
2170  if (ThisDeclID == Redecl.getFirstID()) {
2171  // This ClassTemplateDecl owns a CommonPtr; read it to keep track of all of
2172  // the specializations.
2174  readDeclIDList(SpecIDs);
2176  }
2177 
2178  if (D->getTemplatedDecl()->TemplateOrInstantiation) {
2179  // We were loaded before our templated declaration was. We've not set up
2180  // its corresponding type yet (see VisitCXXRecordDeclImpl), so reconstruct
2181  // it now.
2182  Reader.getContext().getInjectedClassNameType(
2184  }
2185 }
2186 
2188  llvm_unreachable("BuiltinTemplates are not serialized");
2189 }
2190 
2191 /// TODO: Unify with ClassTemplateDecl version?
2192 /// May require unifying ClassTemplateDecl and
2193 /// VarTemplateDecl beyond TemplateDecl...
2195  RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2196 
2197  if (ThisDeclID == Redecl.getFirstID()) {
2198  // This VarTemplateDecl owns a CommonPtr; read it to keep track of all of
2199  // the specializations.
2201  readDeclIDList(SpecIDs);
2203  }
2204 }
2205 
2206 ASTDeclReader::RedeclarableResult
2209  RedeclarableResult Redecl = VisitCXXRecordDeclImpl(D);
2210 
2211  ASTContext &C = Reader.getContext();
2212  if (Decl *InstD = readDecl()) {
2213  if (auto *CTD = dyn_cast<ClassTemplateDecl>(InstD)) {
2214  D->SpecializedTemplate = CTD;
2215  } else {
2217  Record.readTemplateArgumentList(TemplArgs);
2218  TemplateArgumentList *ArgList
2219  = TemplateArgumentList::CreateCopy(C, TemplArgs);
2220  auto *PS =
2222  SpecializedPartialSpecialization();
2223  PS->PartialSpecialization
2224  = cast<ClassTemplatePartialSpecializationDecl>(InstD);
2225  PS->TemplateArgs = ArgList;
2226  D->SpecializedTemplate = PS;
2227  }
2228  }
2229 
2231  Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2232  D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2233  D->PointOfInstantiation = readSourceLocation();
2234  D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2235 
2236  bool writtenAsCanonicalDecl = Record.readInt();
2237  if (writtenAsCanonicalDecl) {
2238  auto *CanonPattern = readDeclAs<ClassTemplateDecl>();
2239  if (D->isCanonicalDecl()) { // It's kept in the folding set.
2240  // Set this as, or find, the canonical declaration for this specialization
2242  if (auto *Partial = dyn_cast<ClassTemplatePartialSpecializationDecl>(D)) {
2243  CanonSpec = CanonPattern->getCommonPtr()->PartialSpecializations
2244  .GetOrInsertNode(Partial);
2245  } else {
2246  CanonSpec =
2247  CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2248  }
2249  // If there was already a canonical specialization, merge into it.
2250  if (CanonSpec != D) {
2251  mergeRedeclarable<TagDecl>(D, CanonSpec, Redecl);
2252 
2253  // This declaration might be a definition. Merge with any existing
2254  // definition.
2255  if (auto *DDD = D->DefinitionData) {
2256  if (CanonSpec->DefinitionData)
2257  MergeDefinitionData(CanonSpec, std::move(*DDD));
2258  else
2259  CanonSpec->DefinitionData = D->DefinitionData;
2260  }
2261  D->DefinitionData = CanonSpec->DefinitionData;
2262  }
2263  }
2264  }
2265 
2266  // Explicit info.
2267  if (TypeSourceInfo *TyInfo = readTypeSourceInfo()) {
2268  auto *ExplicitInfo =
2269  new (C) ClassTemplateSpecializationDecl::ExplicitSpecializationInfo;
2270  ExplicitInfo->TypeAsWritten = TyInfo;
2271  ExplicitInfo->ExternLoc = readSourceLocation();
2272  ExplicitInfo->TemplateKeywordLoc = readSourceLocation();
2273  D->ExplicitInfo = ExplicitInfo;
2274  }
2275 
2276  return Redecl;
2277 }
2278 
2281  // We need to read the template params first because redeclarable is going to
2282  // need them for profiling
2283  TemplateParameterList *Params = Record.readTemplateParameterList();
2284  D->TemplateParams = Params;
2285  D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2286 
2287  RedeclarableResult Redecl = VisitClassTemplateSpecializationDeclImpl(D);
2288 
2289  // These are read/set from/to the first declaration.
2290  if (ThisDeclID == Redecl.getFirstID()) {
2291  D->InstantiatedFromMember.setPointer(
2292  readDeclAs<ClassTemplatePartialSpecializationDecl>());
2293  D->InstantiatedFromMember.setInt(Record.readInt());
2294  }
2295 }
2296 
2299  VisitDecl(D);
2300  D->Specialization = readDeclAs<CXXMethodDecl>();
2301  if (Record.readInt())
2302  D->TemplateArgs = Record.readASTTemplateArgumentListInfo();
2303 }
2304 
2306  RedeclarableResult Redecl = VisitRedeclarableTemplateDecl(D);
2307 
2308  if (ThisDeclID == Redecl.getFirstID()) {
2309  // This FunctionTemplateDecl owns a CommonPtr; read it.
2311  readDeclIDList(SpecIDs);
2313  }
2314 }
2315 
2316 /// TODO: Unify with ClassTemplateSpecializationDecl version?
2317 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
2318 /// VarTemplate(Partial)SpecializationDecl with a new data
2319 /// structure Template(Partial)SpecializationDecl, and
2320 /// using Template(Partial)SpecializationDecl as input type.
2321 ASTDeclReader::RedeclarableResult
2324  RedeclarableResult Redecl = VisitVarDeclImpl(D);
2325 
2326  ASTContext &C = Reader.getContext();
2327  if (Decl *InstD = readDecl()) {
2328  if (auto *VTD = dyn_cast<VarTemplateDecl>(InstD)) {
2329  D->SpecializedTemplate = VTD;
2330  } else {
2332  Record.readTemplateArgumentList(TemplArgs);
2334  C, TemplArgs);
2335  auto *PS =
2336  new (C)
2337  VarTemplateSpecializationDecl::SpecializedPartialSpecialization();
2338  PS->PartialSpecialization =
2339  cast<VarTemplatePartialSpecializationDecl>(InstD);
2340  PS->TemplateArgs = ArgList;
2341  D->SpecializedTemplate = PS;
2342  }
2343  }
2344 
2345  // Explicit info.
2346  if (TypeSourceInfo *TyInfo = readTypeSourceInfo()) {
2347  auto *ExplicitInfo =
2348  new (C) VarTemplateSpecializationDecl::ExplicitSpecializationInfo;
2349  ExplicitInfo->TypeAsWritten = TyInfo;
2350  ExplicitInfo->ExternLoc = readSourceLocation();
2351  ExplicitInfo->TemplateKeywordLoc = readSourceLocation();
2352  D->ExplicitInfo = ExplicitInfo;
2353  }
2354 
2356  Record.readTemplateArgumentList(TemplArgs, /*Canonicalize*/ true);
2357  D->TemplateArgs = TemplateArgumentList::CreateCopy(C, TemplArgs);
2358  D->PointOfInstantiation = readSourceLocation();
2359  D->SpecializationKind = (TemplateSpecializationKind)Record.readInt();
2360  D->IsCompleteDefinition = Record.readInt();
2361 
2362  bool writtenAsCanonicalDecl = Record.readInt();
2363  if (writtenAsCanonicalDecl) {
2364  auto *CanonPattern = readDeclAs<VarTemplateDecl>();
2365  if (D->isCanonicalDecl()) { // It's kept in the folding set.
2366  // FIXME: If it's already present, merge it.
2367  if (auto *Partial = dyn_cast<VarTemplatePartialSpecializationDecl>(D)) {
2368  CanonPattern->getCommonPtr()->PartialSpecializations
2369  .GetOrInsertNode(Partial);
2370  } else {
2371  CanonPattern->getCommonPtr()->Specializations.GetOrInsertNode(D);
2372  }
2373  }
2374  }
2375 
2376  return Redecl;
2377 }
2378 
2379 /// TODO: Unify with ClassTemplatePartialSpecializationDecl version?
2380 /// May require unifying ClassTemplate(Partial)SpecializationDecl and
2381 /// VarTemplate(Partial)SpecializationDecl with a new data
2382 /// structure Template(Partial)SpecializationDecl, and
2383 /// using Template(Partial)SpecializationDecl as input type.
2386  TemplateParameterList *Params = Record.readTemplateParameterList();
2387  D->TemplateParams = Params;
2388  D->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2389 
2390  RedeclarableResult Redecl = VisitVarTemplateSpecializationDeclImpl(D);
2391 
2392  // These are read/set from/to the first declaration.
2393  if (ThisDeclID == Redecl.getFirstID()) {
2394  D->InstantiatedFromMember.setPointer(
2395  readDeclAs<VarTemplatePartialSpecializationDecl>());
2396  D->InstantiatedFromMember.setInt(Record.readInt());
2397  }
2398 }
2399 
2401  VisitTypeDecl(D);
2402 
2403  D->setDeclaredWithTypename(Record.readInt());
2404 
2405  if (Record.readBool()) {
2406  NestedNameSpecifierLoc NNS = Record.readNestedNameSpecifierLoc();
2407  DeclarationNameInfo DN = Record.readDeclarationNameInfo();
2408  ConceptDecl *NamedConcept = Record.readDeclAs<ConceptDecl>();
2409  const ASTTemplateArgumentListInfo *ArgsAsWritten = nullptr;
2410  if (Record.readBool())
2411  ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
2412  Expr *ImmediatelyDeclaredConstraint = Record.readExpr();
2413  D->setTypeConstraint(NNS, DN, /*FoundDecl=*/nullptr, NamedConcept,
2414  ArgsAsWritten, ImmediatelyDeclaredConstraint);
2415  if ((D->ExpandedParameterPack = Record.readInt()))
2416  D->NumExpanded = Record.readInt();
2417  }
2418 
2419  if (Record.readInt())
2420  D->setDefaultArgument(readTypeSourceInfo());
2421 }
2422 
2424  VisitDeclaratorDecl(D);
2425  // TemplateParmPosition.
2426  D->setDepth(Record.readInt());
2427  D->setPosition(Record.readInt());
2429  D->setPlaceholderTypeConstraint(Record.readExpr());
2430  if (D->isExpandedParameterPack()) {
2431  auto TypesAndInfos =
2432  D->getTrailingObjects<std::pair<QualType, TypeSourceInfo *>>();
2433  for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
2434  new (&TypesAndInfos[I].first) QualType(Record.readType());
2435  TypesAndInfos[I].second = readTypeSourceInfo();
2436  }
2437  } else {
2438  // Rest of NonTypeTemplateParmDecl.
2439  D->ParameterPack = Record.readInt();
2440  if (Record.readInt())
2441  D->setDefaultArgument(Record.readExpr());
2442  }
2443 }
2444 
2446  VisitTemplateDecl(D);
2447  // TemplateParmPosition.
2448  D->setDepth(Record.readInt());
2449  D->setPosition(Record.readInt());
2450  if (D->isExpandedParameterPack()) {
2451  auto **Data = D->getTrailingObjects<TemplateParameterList *>();
2452  for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
2453  I != N; ++I)
2454  Data[I] = Record.readTemplateParameterList();
2455  } else {
2456  // Rest of TemplateTemplateParmDecl.
2457  D->ParameterPack = Record.readInt();
2458  if (Record.readInt())
2459  D->setDefaultArgument(Reader.getContext(),
2460  Record.readTemplateArgumentLoc());
2461  }
2462 }
2463 
2465  VisitRedeclarableTemplateDecl(D);
2466 }
2467 
2469  VisitDecl(D);
2470  D->AssertExprAndFailed.setPointer(Record.readExpr());
2471  D->AssertExprAndFailed.setInt(Record.readInt());
2472  D->Message = cast_or_null<StringLiteral>(Record.readExpr());
2473  D->RParenLoc = readSourceLocation();
2474 }
2475 
2477  VisitDecl(D);
2478 }
2479 
2482  VisitDecl(D);
2483  D->ExtendingDecl = readDeclAs<ValueDecl>();
2484  D->ExprWithTemporary = Record.readStmt();
2485  if (Record.readInt()) {
2486  D->Value = new (D->getASTContext()) APValue(Record.readAPValue());
2487  D->getASTContext().addDestruction(D->Value);
2488  }
2489  D->ManglingNumber = Record.readInt();
2490  mergeMergeable(D);
2491 }
2492 
2493 std::pair<uint64_t, uint64_t>
2495  uint64_t LexicalOffset = ReadLocalOffset();
2496  uint64_t VisibleOffset = ReadLocalOffset();
2497  return std::make_pair(LexicalOffset, VisibleOffset);
2498 }
2499 
2500 template <typename T>
2501 ASTDeclReader::RedeclarableResult
2503  DeclID FirstDeclID = readDeclID();
2504  Decl *MergeWith = nullptr;
2505 
2506  bool IsKeyDecl = ThisDeclID == FirstDeclID;
2507  bool IsFirstLocalDecl = false;
2508 
2509  uint64_t RedeclOffset = 0;
2510 
2511  // 0 indicates that this declaration was the only declaration of its entity,
2512  // and is used for space optimization.
2513  if (FirstDeclID == 0) {
2514  FirstDeclID = ThisDeclID;
2515  IsKeyDecl = true;
2516  IsFirstLocalDecl = true;
2517  } else if (unsigned N = Record.readInt()) {
2518  // This declaration was the first local declaration, but may have imported
2519  // other declarations.
2520  IsKeyDecl = N == 1;
2521  IsFirstLocalDecl = true;
2522 
2523  // We have some declarations that must be before us in our redeclaration
2524  // chain. Read them now, and remember that we ought to merge with one of
2525  // them.
2526  // FIXME: Provide a known merge target to the second and subsequent such
2527  // declaration.
2528  for (unsigned I = 0; I != N - 1; ++I)
2529  MergeWith = readDecl();
2530 
2531  RedeclOffset = ReadLocalOffset();
2532  } else {
2533  // This declaration was not the first local declaration. Read the first
2534  // local declaration now, to trigger the import of other redeclarations.
2535  (void)readDecl();
2536  }
2537 
2538  auto *FirstDecl = cast_or_null<T>(Reader.GetDecl(FirstDeclID));
2539  if (FirstDecl != D) {
2540  // We delay loading of the redeclaration chain to avoid deeply nested calls.
2541  // We temporarily set the first (canonical) declaration as the previous one
2542  // which is the one that matters and mark the real previous DeclID to be
2543  // loaded & attached later on.
2545  D->First = FirstDecl->getCanonicalDecl();
2546  }
2547 
2548  auto *DAsT = static_cast<T *>(D);
2549 
2550  // Note that we need to load local redeclarations of this decl and build a
2551  // decl chain for them. This must happen *after* we perform the preloading
2552  // above; this ensures that the redeclaration chain is built in the correct
2553  // order.
2554  if (IsFirstLocalDecl)
2555  Reader.PendingDeclChains.push_back(std::make_pair(DAsT, RedeclOffset));
2556 
2557  return RedeclarableResult(MergeWith, FirstDeclID, IsKeyDecl);
2558 }
2559 
2560 /// Attempts to merge the given declaration (D) with another declaration
2561 /// of the same entity.
2562 template<typename T>
2564  RedeclarableResult &Redecl,
2565  DeclID TemplatePatternID) {
2566  // If modules are not available, there is no reason to perform this merge.
2567  if (!Reader.getContext().getLangOpts().Modules)
2568  return;
2569 
2570  // If we're not the canonical declaration, we don't need to merge.
2571  if (!DBase->isFirstDecl())
2572  return;
2573 
2574  auto *D = static_cast<T *>(DBase);
2575 
2576  if (auto *Existing = Redecl.getKnownMergeTarget())
2577  // We already know of an existing declaration we should merge with.
2578  mergeRedeclarable(D, cast<T>(Existing), Redecl, TemplatePatternID);
2579  else if (FindExistingResult ExistingRes = findExisting(D))
2580  if (T *Existing = ExistingRes)
2581  mergeRedeclarable(D, Existing, Redecl, TemplatePatternID);
2582 }
2583 
2584 /// "Cast" to type T, asserting if we don't have an implicit conversion.
2585 /// We use this to put code in a template that will only be valid for certain
2586 /// instantiations.
2587 template<typename T> static T assert_cast(T t) { return t; }
2588 template<typename T> static T assert_cast(...) {
2589  llvm_unreachable("bad assert_cast");
2590 }
2591 
2592 /// Merge together the pattern declarations from two template
2593 /// declarations.
2595  RedeclarableTemplateDecl *Existing,
2596  DeclID DsID, bool IsKeyDecl) {
2597  auto *DPattern = D->getTemplatedDecl();
2598  auto *ExistingPattern = Existing->getTemplatedDecl();
2599  RedeclarableResult Result(/*MergeWith*/ ExistingPattern,
2600  DPattern->getCanonicalDecl()->getGlobalID(),
2601  IsKeyDecl);
2602 
2603  if (auto *DClass = dyn_cast<CXXRecordDecl>(DPattern)) {
2604  // Merge with any existing definition.
2605  // FIXME: This is duplicated in several places. Refactor.
2606  auto *ExistingClass =
2607  cast<CXXRecordDecl>(ExistingPattern)->getCanonicalDecl();
2608  if (auto *DDD = DClass->DefinitionData) {
2609  if (ExistingClass->DefinitionData) {
2610  MergeDefinitionData(ExistingClass, std::move(*DDD));
2611  } else {
2612  ExistingClass->DefinitionData = DClass->DefinitionData;
2613  // We may have skipped this before because we thought that DClass
2614  // was the canonical declaration.
2615  Reader.PendingDefinitions.insert(DClass);
2616  }
2617  }
2618  DClass->DefinitionData = ExistingClass->DefinitionData;
2619 
2620  return mergeRedeclarable(DClass, cast<TagDecl>(ExistingPattern),
2621  Result);
2622  }
2623  if (auto *DFunction = dyn_cast<FunctionDecl>(DPattern))
2624  return mergeRedeclarable(DFunction, cast<FunctionDecl>(ExistingPattern),
2625  Result);
2626  if (auto *DVar = dyn_cast<VarDecl>(DPattern))
2627  return mergeRedeclarable(DVar, cast<VarDecl>(ExistingPattern), Result);
2628  if (auto *DAlias = dyn_cast<TypeAliasDecl>(DPattern))
2629  return mergeRedeclarable(DAlias, cast<TypedefNameDecl>(ExistingPattern),
2630  Result);
2631  llvm_unreachable("merged an unknown kind of redeclarable template");
2632 }
2633 
2634 /// Attempts to merge the given declaration (D) with another declaration
2635 /// of the same entity.
2636 template<typename T>
2638  RedeclarableResult &Redecl,
2639  DeclID TemplatePatternID) {
2640  auto *D = static_cast<T *>(DBase);
2641  T *ExistingCanon = Existing->getCanonicalDecl();
2642  T *DCanon = D->getCanonicalDecl();
2643  if (ExistingCanon != DCanon) {
2644  assert(DCanon->getGlobalID() == Redecl.getFirstID() &&
2645  "already merged this declaration");
2646 
2647  // Have our redeclaration link point back at the canonical declaration
2648  // of the existing declaration, so that this declaration has the
2649  // appropriate canonical declaration.
2650  D->RedeclLink = Redeclarable<T>::PreviousDeclLink(ExistingCanon);
2651  D->First = ExistingCanon;
2652  ExistingCanon->Used |= D->Used;
2653  D->Used = false;
2654 
2655  // When we merge a namespace, update its pointer to the first namespace.
2656  // We cannot have loaded any redeclarations of this declaration yet, so
2657  // there's nothing else that needs to be updated.
2658  if (auto *Namespace = dyn_cast<NamespaceDecl>(D))
2659  Namespace->AnonOrFirstNamespaceAndInline.setPointer(
2660  assert_cast<NamespaceDecl*>(ExistingCanon));
2661 
2662  // When we merge a template, merge its pattern.
2663  if (auto *DTemplate = dyn_cast<RedeclarableTemplateDecl>(D))
2664  mergeTemplatePattern(
2665  DTemplate, assert_cast<RedeclarableTemplateDecl*>(ExistingCanon),
2666  TemplatePatternID, Redecl.isKeyDecl());
2667 
2668  // If this declaration is a key declaration, make a note of that.
2669  if (Redecl.isKeyDecl())
2670  Reader.KeyDecls[ExistingCanon].push_back(Redecl.getFirstID());
2671  }
2672 }
2673 
2674 /// ODR-like semantics for C/ObjC allow us to merge tag types and a structural
2675 /// check in Sema guarantees the types can be merged (see C11 6.2.7/1 or C89
2676 /// 6.1.2.6/1). Although most merging is done in Sema, we need to guarantee
2677 /// that some types are mergeable during deserialization, otherwise name
2678 /// lookup fails. This is the case for EnumConstantDecl.
2680  if (!ND)
2681  return false;
2682  // TODO: implement merge for other necessary decls.
2683  if (isa<EnumConstantDecl, FieldDecl, IndirectFieldDecl>(ND))
2684  return true;
2685  return false;
2686 }
2687 
2688 /// Attempts to merge LifetimeExtendedTemporaryDecl with
2689 /// identical class definitions from two different modules.
2691  // If modules are not available, there is no reason to perform this merge.
2692  if (!Reader.getContext().getLangOpts().Modules)
2693  return;
2694 
2695  LifetimeExtendedTemporaryDecl *LETDecl = D;
2696 
2698  Reader.LETemporaryForMerging[std::make_pair(
2699  LETDecl->getExtendingDecl(), LETDecl->getManglingNumber())];
2700  if (LookupResult)
2701  Reader.getContext().setPrimaryMergedDecl(LETDecl,
2702  LookupResult->getCanonicalDecl());
2703  else
2704  LookupResult = LETDecl;
2705 }
2706 
2707 /// Attempts to merge the given declaration (D) with another declaration
2708 /// of the same entity, for the case where the entity is not actually
2709 /// redeclarable. This happens, for instance, when merging the fields of
2710 /// identical class definitions from two different modules.
2711 template<typename T>
2713  // If modules are not available, there is no reason to perform this merge.
2714  if (!Reader.getContext().getLangOpts().Modules)
2715  return;
2716 
2717  // ODR-based merging is performed in C++ and in some cases (tag types) in C.
2718  // Note that C identically-named things in different translation units are
2719  // not redeclarations, but may still have compatible types, where ODR-like
2720  // semantics may apply.
2721  if (!Reader.getContext().getLangOpts().CPlusPlus &&
2722  !allowODRLikeMergeInC(dyn_cast<NamedDecl>(static_cast<T*>(D))))
2723  return;
2724 
2725  if (FindExistingResult ExistingRes = findExisting(static_cast<T*>(D)))
2726  if (T *Existing = ExistingRes)
2727  Reader.getContext().setPrimaryMergedDecl(static_cast<T *>(D),
2728  Existing->getCanonicalDecl());
2729 }
2730 
2732  Record.readOMPChildren(D->Data);
2733  VisitDecl(D);
2734 }
2735 
2737  Record.readOMPChildren(D->Data);
2738  VisitDecl(D);
2739 }
2740 
2742  Record.readOMPChildren(D->Data);
2743  VisitDecl(D);
2744 }
2745 
2747  VisitValueDecl(D);
2748  D->setLocation(readSourceLocation());
2749  Expr *In = Record.readExpr();
2750  Expr *Out = Record.readExpr();
2751  D->setCombinerData(In, Out);
2752  Expr *Combiner = Record.readExpr();
2753  D->setCombiner(Combiner);
2754  Expr *Orig = Record.readExpr();
2755  Expr *Priv = Record.readExpr();
2756  D->setInitializerData(Orig, Priv);
2757  Expr *Init = Record.readExpr();
2758  auto IK = static_cast<OMPDeclareReductionDecl::InitKind>(Record.readInt());
2759  D->setInitializer(Init, IK);
2760  D->PrevDeclInScope = readDeclID();
2761 }
2762 
2764  Record.readOMPChildren(D->Data);
2765  VisitValueDecl(D);
2766  D->VarName = Record.readDeclarationName();
2767  D->PrevDeclInScope = readDeclID();
2768 }
2769 
2771  VisitVarDecl(D);
2772 }
2773 
2774 //===----------------------------------------------------------------------===//
2775 // Attribute Reading
2776 //===----------------------------------------------------------------------===//
2777 
2778 namespace {
2779 class AttrReader {
2780  ASTRecordReader &Reader;
2781 
2782 public:
2783  AttrReader(ASTRecordReader &Reader) : Reader(Reader) {}
2784 
2785  uint64_t readInt() {
2786  return Reader.readInt();
2787  }
2788 
2789  SourceRange readSourceRange() {
2790  return Reader.readSourceRange();
2791  }
2792 
2793  SourceLocation readSourceLocation() {
2794  return Reader.readSourceLocation();
2795  }
2796 
2797  Expr *readExpr() { return Reader.readExpr(); }
2798 
2799  std::string readString() {
2800  return Reader.readString();
2801  }
2802 
2803  TypeSourceInfo *readTypeSourceInfo() {
2804  return Reader.readTypeSourceInfo();
2805  }
2806 
2807  IdentifierInfo *readIdentifier() {
2808  return Reader.readIdentifier();
2809  }
2810 
2811  VersionTuple readVersionTuple() {
2812  return Reader.readVersionTuple();
2813  }
2814 
2815  OMPTraitInfo *readOMPTraitInfo() { return Reader.readOMPTraitInfo(); }
2816 
2817  template <typename T> T *GetLocalDeclAs(uint32_t LocalID) {
2818  return Reader.GetLocalDeclAs<T>(LocalID);
2819  }
2820 };
2821 }
2822 
2824  AttrReader Record(*this);
2825  auto V = Record.readInt();
2826  if (!V)
2827  return nullptr;
2828 
2829  Attr *New = nullptr;
2830  // Kind is stored as a 1-based integer because 0 is used to indicate a null
2831  // Attr pointer.
2832  auto Kind = static_cast<attr::Kind>(V - 1);
2833  ASTContext &Context = getContext();
2834 
2835  IdentifierInfo *AttrName = Record.readIdentifier();
2836  IdentifierInfo *ScopeName = Record.readIdentifier();
2837  SourceRange AttrRange = Record.readSourceRange();
2838  SourceLocation ScopeLoc = Record.readSourceLocation();
2839  unsigned ParsedKind = Record.readInt();
2840  unsigned Syntax = Record.readInt();
2841  unsigned SpellingIndex = Record.readInt();
2842 
2843  AttributeCommonInfo Info(AttrName, ScopeName, AttrRange, ScopeLoc,
2844  AttributeCommonInfo::Kind(ParsedKind),
2845  AttributeCommonInfo::Syntax(Syntax), SpellingIndex);
2846 
2847 #include "clang/Serialization/AttrPCHRead.inc"
2848 
2849  assert(New && "Unable to decode attribute?");
2850  return New;
2851 }
2852 
2853 /// Reads attributes from the current stream position.
2855  for (unsigned I = 0, E = readInt(); I != E; ++I)
2856  Attrs.push_back(readAttr());
2857 }
2858 
2859 //===----------------------------------------------------------------------===//
2860 // ASTReader Implementation
2861 //===----------------------------------------------------------------------===//
2862 
2863 /// Note that we have loaded the declaration with the given
2864 /// Index.
2865 ///
2866 /// This routine notes that this declaration has already been loaded,
2867 /// so that future GetDecl calls will return this declaration rather
2868 /// than trying to load a new declaration.
2869 inline void ASTReader::LoadedDecl(unsigned Index, Decl *D) {
2870  assert(!DeclsLoaded[Index] && "Decl loaded twice?");
2871  DeclsLoaded[Index] = D;
2872 }
2873 
2874 /// Determine whether the consumer will be interested in seeing
2875 /// this declaration (via HandleTopLevelDecl).
2876 ///
2877 /// This routine should return true for anything that might affect
2878 /// code generation, e.g., inline function definitions, Objective-C
2879 /// declarations with metadata, etc.
2880 static bool isConsumerInterestedIn(ASTContext &Ctx, Decl *D, bool HasBody) {
2881  // An ObjCMethodDecl is never considered as "interesting" because its
2882  // implementation container always is.
2883 
2884  // An ImportDecl or VarDecl imported from a module map module will get
2885  // emitted when we import the relevant module.
2887  auto *M = D->getImportedOwningModule();
2888  if (M && M->Kind == Module::ModuleMapModule &&
2889  Ctx.DeclMustBeEmitted(D))
2890  return false;
2891  }
2892 
2893  if (isa<FileScopeAsmDecl>(D) ||
2894  isa<ObjCProtocolDecl>(D) ||
2895  isa<ObjCImplDecl>(D) ||
2896  isa<ImportDecl>(D) ||
2897  isa<PragmaCommentDecl>(D) ||
2898  isa<PragmaDetectMismatchDecl>(D))
2899  return true;
2900  if (isa<OMPThreadPrivateDecl>(D) || isa<OMPDeclareReductionDecl>(D) ||
2901  isa<OMPDeclareMapperDecl>(D) || isa<OMPAllocateDecl>(D) ||
2902  isa<OMPRequiresDecl>(D))
2903  return !D->getDeclContext()->isFunctionOrMethod();
2904  if (const auto *Var = dyn_cast<VarDecl>(D))
2905  return Var->isFileVarDecl() &&
2906  (Var->isThisDeclarationADefinition() == VarDecl::Definition ||
2907  OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(Var));
2908  if (const auto *Func = dyn_cast<FunctionDecl>(D))
2909  return Func->doesThisDeclarationHaveABody() || HasBody;
2910 
2911  if (auto *ES = D->getASTContext().getExternalSource())
2912  if (ES->hasExternalDefinitions(D) == ExternalASTSource::EK_Never)
2913  return true;
2914 
2915  return false;
2916 }
2917 
2918 /// Get the correct cursor and offset for loading a declaration.
2919 ASTReader::RecordLocation
2920 ASTReader::DeclCursorForID(DeclID ID, SourceLocation &Loc) {
2921  GlobalDeclMapType::iterator I = GlobalDeclMap.find(ID);
2922  assert(I != GlobalDeclMap.end() && "Corrupted global declaration map");
2923  ModuleFile *M = I->second;
2924  const DeclOffset &DOffs =
2926  Loc = TranslateSourceLocation(*M, DOffs.getLocation());
2927  return RecordLocation(M, DOffs.getBitOffset(M->DeclsBlockStartOffset));
2928 }
2929 
2930 ASTReader::RecordLocation ASTReader::getLocalBitOffset(uint64_t GlobalOffset) {
2931  auto I = GlobalBitOffsetsMap.find(GlobalOffset);
2932 
2933  assert(I != GlobalBitOffsetsMap.end() && "Corrupted global bit offsets map");
2934  return RecordLocation(I->second, GlobalOffset - I->second->GlobalBitOffset);
2935 }
2936 
2937 uint64_t ASTReader::getGlobalBitOffset(ModuleFile &M, uint64_t LocalOffset) {
2938  return LocalOffset + M.GlobalBitOffset;
2939 }
2940 
2941 static bool isSameTemplateParameterList(const ASTContext &C,
2942  const TemplateParameterList *X,
2943  const TemplateParameterList *Y);
2944 
2945 /// Determine whether two template parameters are similar enough
2946 /// that they may be used in declarations of the same template.
2948  const NamedDecl *Y) {
2949  if (X->getKind() != Y->getKind())
2950  return false;
2951 
2952  if (const auto *TX = dyn_cast<TemplateTypeParmDecl>(X)) {
2953  const auto *TY = cast<TemplateTypeParmDecl>(Y);
2954  if (TX->isParameterPack() != TY->isParameterPack())
2955  return false;
2956  if (TX->hasTypeConstraint() != TY->hasTypeConstraint())
2957  return false;
2958  const TypeConstraint *TXTC = TX->getTypeConstraint();
2959  const TypeConstraint *TYTC = TY->getTypeConstraint();
2960  if (!TXTC != !TYTC)
2961  return false;
2962  if (TXTC && TYTC) {
2963  if (TXTC->getNamedConcept() != TYTC->getNamedConcept())
2964  return false;
2965  if (TXTC->hasExplicitTemplateArgs() != TYTC->hasExplicitTemplateArgs())
2966  return false;
2967  if (TXTC->hasExplicitTemplateArgs()) {
2968  const auto *TXTCArgs = TXTC->getTemplateArgsAsWritten();
2969  const auto *TYTCArgs = TYTC->getTemplateArgsAsWritten();
2970  if (TXTCArgs->NumTemplateArgs != TYTCArgs->NumTemplateArgs)
2971  return false;
2972  llvm::FoldingSetNodeID XID, YID;
2973  for (const auto &ArgLoc : TXTCArgs->arguments())
2974  ArgLoc.getArgument().Profile(XID, X->getASTContext());
2975  for (const auto &ArgLoc : TYTCArgs->arguments())
2976  ArgLoc.getArgument().Profile(YID, Y->getASTContext());
2977  if (XID != YID)
2978  return false;
2979  }
2980  }
2981  return true;
2982  }
2983 
2984  if (const auto *TX = dyn_cast<NonTypeTemplateParmDecl>(X)) {
2985  const auto *TY = cast<NonTypeTemplateParmDecl>(Y);
2986  return TX->isParameterPack() == TY->isParameterPack() &&
2987  TX->getASTContext().hasSameType(TX->getType(), TY->getType());
2988  }
2989 
2990  const auto *TX = cast<TemplateTemplateParmDecl>(X);
2991  const auto *TY = cast<TemplateTemplateParmDecl>(Y);
2992  return TX->isParameterPack() == TY->isParameterPack() &&
2993  isSameTemplateParameterList(TX->getASTContext(),
2994  TX->getTemplateParameters(),
2995  TY->getTemplateParameters());
2996 }
2997 
2999  if (auto *NS = X->getAsNamespace())
3000  return NS;
3001  if (auto *NAS = X->getAsNamespaceAlias())
3002  return NAS->getNamespace();
3003  return nullptr;
3004 }
3005 
3007  const NestedNameSpecifier *Y) {
3008  if (auto *NSX = getNamespace(X)) {
3009  auto *NSY = getNamespace(Y);
3010  if (!NSY || NSX->getCanonicalDecl() != NSY->getCanonicalDecl())
3011  return false;
3012  } else if (X->getKind() != Y->getKind())
3013  return false;
3014 
3015  // FIXME: For namespaces and types, we're permitted to check that the entity
3016  // is named via the same tokens. We should probably do so.
3017  switch (X->getKind()) {
3019  if (X->getAsIdentifier() != Y->getAsIdentifier())
3020  return false;
3021  break;
3024  // We've already checked that we named the same namespace.
3025  break;
3028  if (X->getAsType()->getCanonicalTypeInternal() !=
3030  return false;
3031  break;
3034  return true;
3035  }
3036 
3037  // Recurse into earlier portion of NNS, if any.
3038  auto *PX = X->getPrefix();
3039  auto *PY = Y->getPrefix();
3040  if (PX && PY)
3041  return isSameQualifier(PX, PY);
3042  return !PX && !PY;
3043 }
3044 
3045 /// Determine whether two template parameter lists are similar enough
3046 /// that they may be used in declarations of the same template.
3048  const TemplateParameterList *X,
3049  const TemplateParameterList *Y) {
3050  if (X->size() != Y->size())
3051  return false;
3052 
3053  for (unsigned I = 0, N = X->size(); I != N; ++I)
3054  if (!isSameTemplateParameter(X->getParam(I), Y->getParam(I)))
3055  return false;
3056 
3057  const Expr *XRC = X->getRequiresClause();
3058  const Expr *YRC = Y->getRequiresClause();
3059  if (!XRC != !YRC)
3060  return false;
3061  if (XRC) {
3062  llvm::FoldingSetNodeID XRCID, YRCID;
3063  XRC->Profile(XRCID, C, /*Canonical=*/true);
3064  YRC->Profile(YRCID, C, /*Canonical=*/true);
3065  if (XRCID != YRCID)
3066  return false;
3067  }
3068 
3069  return true;
3070 }
3071 
3072 /// Determine whether the attributes we can overload on are identical for A and
3073 /// B. Will ignore any overloadable attrs represented in the type of A and B.
3075  const FunctionDecl *B) {
3076  // Note that pass_object_size attributes are represented in the function's
3077  // ExtParameterInfo, so we don't need to check them here.
3078 
3079  llvm::FoldingSetNodeID Cand1ID, Cand2ID;
3080  auto AEnableIfAttrs = A->specific_attrs<EnableIfAttr>();
3081  auto BEnableIfAttrs = B->specific_attrs<EnableIfAttr>();
3082 
3083  for (auto Pair : zip_longest(AEnableIfAttrs, BEnableIfAttrs)) {
3084  Optional<EnableIfAttr *> Cand1A = std::get<0>(Pair);
3085  Optional<EnableIfAttr *> Cand2A = std::get<1>(Pair);
3086 
3087  // Return false if the number of enable_if attributes is different.
3088  if (!Cand1A || !Cand2A)
3089  return false;
3090 
3091  Cand1ID.clear();
3092  Cand2ID.clear();
3093 
3094  (*Cand1A)->getCond()->Profile(Cand1ID, A->getASTContext(), true);
3095  (*Cand2A)->getCond()->Profile(Cand2ID, B->getASTContext(), true);
3096 
3097  // Return false if any of the enable_if expressions of A and B are
3098  // different.
3099  if (Cand1ID != Cand2ID)
3100  return false;
3101  }
3102  return true;
3103 }
3104 
3105 /// Determine whether the two declarations refer to the same entity.
3106 static bool isSameEntity(NamedDecl *X, NamedDecl *Y) {
3107  assert(X->getDeclName() == Y->getDeclName() && "Declaration name mismatch!");
3108 
3109  if (X == Y)
3110  return true;
3111 
3112  // Must be in the same context.
3113  //
3114  // Note that we can't use DeclContext::Equals here, because the DeclContexts
3115  // could be two different declarations of the same function. (We will fix the
3116  // semantic DC to refer to the primary definition after merging.)
3117  if (!declaresSameEntity(cast<Decl>(X->getDeclContext()->getRedeclContext()),
3118  cast<Decl>(Y->getDeclContext()->getRedeclContext())))
3119  return false;
3120 
3121  // Two typedefs refer to the same entity if they have the same underlying
3122  // type.
3123  if (const auto *TypedefX = dyn_cast<TypedefNameDecl>(X))
3124  if (const auto *TypedefY = dyn_cast<TypedefNameDecl>(Y))
3125  return X->getASTContext().hasSameType(TypedefX->getUnderlyingType(),
3126  TypedefY->getUnderlyingType());
3127 
3128  // Must have the same kind.
3129  if (X->getKind() != Y->getKind())
3130  return false;
3131 
3132  // Objective-C classes and protocols with the same name always match.
3133  if (isa<ObjCInterfaceDecl>(X) || isa<ObjCProtocolDecl>(X))
3134  return true;
3135 
3136  if (isa<ClassTemplateSpecializationDecl>(X)) {
3137  // No need to handle these here: we merge them when adding them to the
3138  // template.
3139  return false;
3140  }
3141 
3142  // Compatible tags match.
3143  if (const auto *TagX = dyn_cast<TagDecl>(X)) {
3144  const auto *TagY = cast<TagDecl>(Y);
3145  return (TagX->getTagKind() == TagY->getTagKind()) ||
3146  ((TagX->getTagKind() == TTK_Struct || TagX->getTagKind() == TTK_Class ||
3147  TagX->getTagKind() == TTK_Interface) &&
3148  (TagY->getTagKind() == TTK_Struct || TagY->getTagKind() == TTK_Class ||
3149  TagY->getTagKind() == TTK_Interface));
3150  }
3151 
3152  // Functions with the same type and linkage match.
3153  // FIXME: This needs to cope with merging of prototyped/non-prototyped
3154  // functions, etc.
3155  if (const auto *FuncX = dyn_cast<FunctionDecl>(X)) {
3156  const auto *FuncY = cast<FunctionDecl>(Y);
3157  if (const auto *CtorX = dyn_cast<CXXConstructorDecl>(X)) {
3158  const auto *CtorY = cast<CXXConstructorDecl>(Y);
3159  if (CtorX->getInheritedConstructor() &&
3160  !isSameEntity(CtorX->getInheritedConstructor().getConstructor(),
3161  CtorY->getInheritedConstructor().getConstructor()))
3162  return false;
3163  }
3164 
3165  if (FuncX->isMultiVersion() != FuncY->isMultiVersion())
3166  return false;
3167 
3168  // Multiversioned functions with different feature strings are represented
3169  // as separate declarations.
3170  if (FuncX->isMultiVersion()) {
3171  const auto *TAX = FuncX->getAttr<TargetAttr>();
3172  const auto *TAY = FuncY->getAttr<TargetAttr>();
3173  assert(TAX && TAY && "Multiversion Function without target attribute");
3174 
3175  if (TAX->getFeaturesStr() != TAY->getFeaturesStr())
3176  return false;
3177  }
3178 
3179  ASTContext &C = FuncX->getASTContext();
3180 
3181  const Expr *XRC = FuncX->getTrailingRequiresClause();
3182  const Expr *YRC = FuncY->getTrailingRequiresClause();
3183  if (!XRC != !YRC)
3184  return false;
3185  if (XRC) {
3186  llvm::FoldingSetNodeID XRCID, YRCID;
3187  XRC->Profile(XRCID, C, /*Canonical=*/true);
3188  YRC->Profile(YRCID, C, /*Canonical=*/true);
3189  if (XRCID != YRCID)
3190  return false;
3191  }
3192 
3193  auto GetTypeAsWritten = [](const FunctionDecl *FD) {
3194  // Map to the first declaration that we've already merged into this one.
3195  // The TSI of redeclarations might not match (due to calling conventions
3196  // being inherited onto the type but not the TSI), but the TSI type of
3197  // the first declaration of the function should match across modules.
3198  FD = FD->getCanonicalDecl();
3199  return FD->getTypeSourceInfo() ? FD->getTypeSourceInfo()->getType()
3200  : FD->getType();
3201  };
3202  QualType XT = GetTypeAsWritten(FuncX), YT = GetTypeAsWritten(FuncY);
3203  if (!C.hasSameType(XT, YT)) {
3204  // We can get functions with different types on the redecl chain in C++17
3205  // if they have differing exception specifications and at least one of
3206  // the excpetion specs is unresolved.
3207  auto *XFPT = XT->getAs<FunctionProtoType>();
3208  auto *YFPT = YT->getAs<FunctionProtoType>();
3209  if (C.getLangOpts().CPlusPlus17 && XFPT && YFPT &&
3210  (isUnresolvedExceptionSpec(XFPT->getExceptionSpecType()) ||
3212  C.hasSameFunctionTypeIgnoringExceptionSpec(XT, YT))
3213  return true;
3214  return false;
3215  }
3216 
3217  return FuncX->getLinkageInternal() == FuncY->getLinkageInternal() &&
3218  hasSameOverloadableAttrs(FuncX, FuncY);
3219  }
3220 
3221  // Variables with the same type and linkage match.
3222  if (const auto *VarX = dyn_cast<VarDecl>(X)) {
3223  const auto *VarY = cast<VarDecl>(Y);
3224  if (VarX->getLinkageInternal() == VarY->getLinkageInternal()) {
3225  ASTContext &C = VarX->getASTContext();
3226  if (C.hasSameType(VarX->getType(), VarY->getType()))
3227  return true;
3228 
3229  // We can get decls with different types on the redecl chain. Eg.
3230  // template <typename T> struct S { static T Var[]; }; // #1
3231  // template <typename T> T S<T>::Var[sizeof(T)]; // #2
3232  // Only? happens when completing an incomplete array type. In this case
3233  // when comparing #1 and #2 we should go through their element type.
3234  const ArrayType *VarXTy = C.getAsArrayType(VarX->getType());
3235  const ArrayType *VarYTy = C.getAsArrayType(VarY->getType());
3236  if (!VarXTy || !VarYTy)
3237  return false;
3238  if (VarXTy->isIncompleteArrayType() || VarYTy->isIncompleteArrayType())
3239  return C.hasSameType(VarXTy->getElementType(), VarYTy->getElementType());
3240  }
3241  return false;
3242  }
3243 
3244  // Namespaces with the same name and inlinedness match.
3245  if (const auto *NamespaceX = dyn_cast<NamespaceDecl>(X)) {
3246  const auto *NamespaceY = cast<NamespaceDecl>(Y);
3247  return NamespaceX->isInline() == NamespaceY->isInline();
3248  }
3249 
3250  // Identical template names and kinds match if their template parameter lists
3251  // and patterns match.
3252  if (const auto *TemplateX = dyn_cast<TemplateDecl>(X)) {
3253  const auto *TemplateY = cast<TemplateDecl>(Y);
3254  return isSameEntity(TemplateX->getTemplatedDecl(),
3255  TemplateY->getTemplatedDecl()) &&
3256  isSameTemplateParameterList(TemplateX->getASTContext(),
3257  TemplateX->getTemplateParameters(),
3258  TemplateY->getTemplateParameters());
3259  }
3260 
3261  // Fields with the same name and the same type match.
3262  if (const auto *FDX = dyn_cast<FieldDecl>(X)) {
3263  const auto *FDY = cast<FieldDecl>(Y);
3264  // FIXME: Also check the bitwidth is odr-equivalent, if any.
3265  return X->getASTContext().hasSameType(FDX->getType(), FDY->getType());
3266  }
3267 
3268  // Indirect fields with the same target field match.
3269  if (const auto *IFDX = dyn_cast<IndirectFieldDecl>(X)) {
3270  const auto *IFDY = cast<IndirectFieldDecl>(Y);
3271  return IFDX->getAnonField()->getCanonicalDecl() ==
3272  IFDY->getAnonField()->getCanonicalDecl();
3273  }
3274 
3275  // Enumerators with the same name match.
3276  if (isa<EnumConstantDecl>(X))
3277  // FIXME: Also check the value is odr-equivalent.
3278  return true;
3279 
3280  // Using shadow declarations with the same target match.
3281  if (const auto *USX = dyn_cast<UsingShadowDecl>(X)) {
3282  const auto *USY = cast<UsingShadowDecl>(Y);
3283  return USX->getTargetDecl() == USY->getTargetDecl();
3284  }
3285 
3286  // Using declarations with the same qualifier match. (We already know that
3287  // the name matches.)
3288  if (const auto *UX = dyn_cast<UsingDecl>(X)) {
3289  const auto *UY = cast<UsingDecl>(Y);
3290  return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
3291  UX->hasTypename() == UY->hasTypename() &&
3292  UX->isAccessDeclaration() == UY->isAccessDeclaration();
3293  }
3294  if (const auto *UX = dyn_cast<UnresolvedUsingValueDecl>(X)) {
3295  const auto *UY = cast<UnresolvedUsingValueDecl>(Y);
3296  return isSameQualifier(UX->getQualifier(), UY->getQualifier()) &&
3297  UX->isAccessDeclaration() == UY->isAccessDeclaration();
3298  }
3299  if (const auto *UX = dyn_cast<UnresolvedUsingTypenameDecl>(X)) {
3300  return isSameQualifier(
3301  UX->getQualifier(),
3302  cast<UnresolvedUsingTypenameDecl>(Y)->getQualifier());
3303  }
3304 
3305  // Using-pack declarations are only created by instantiation, and match if
3306  // they're instantiated from matching UnresolvedUsing...Decls.
3307  if (const auto *UX = dyn_cast<UsingPackDecl>(X)) {
3308  return declaresSameEntity(
3309  UX->getInstantiatedFromUsingDecl(),
3310  cast<UsingPackDecl>(Y)->getInstantiatedFromUsingDecl());
3311  }
3312 
3313  // Namespace alias definitions with the same target match.
3314  if (const auto *NAX = dyn_cast<NamespaceAliasDecl>(X)) {
3315  const auto *NAY = cast<NamespaceAliasDecl>(Y);
3316  return NAX->getNamespace()->Equals(NAY->getNamespace());
3317  }
3318 
3319  return false;
3320 }
3321 
3322 /// Find the context in which we should search for previous declarations when
3323 /// looking for declarations to merge.
3324 DeclContext *ASTDeclReader::getPrimaryContextForMerging(ASTReader &Reader,
3325  DeclContext *DC) {
3326  if (auto *ND = dyn_cast<NamespaceDecl>(DC))
3327  return ND->getOriginalNamespace();
3328 
3329  if (auto *RD = dyn_cast<CXXRecordDecl>(DC)) {
3330  // Try to dig out the definition.
3331  auto *DD = RD->DefinitionData;
3332  if (!DD)
3333  DD = RD->getCanonicalDecl()->DefinitionData;
3334 
3335  // If there's no definition yet, then DC's definition is added by an update
3336  // record, but we've not yet loaded that update record. In this case, we
3337  // commit to DC being the canonical definition now, and will fix this when
3338  // we load the update record.
3339  if (!DD) {
3340  DD = new (Reader.getContext()) struct CXXRecordDecl::DefinitionData(RD);
3341  RD->setCompleteDefinition(true);
3342  RD->DefinitionData = DD;
3343  RD->getCanonicalDecl()->DefinitionData = DD;
3344 
3345  // Track that we did this horrible thing so that we can fix it later.
3346  Reader.PendingFakeDefinitionData.insert(
3347  std::make_pair(DD, ASTReader::PendingFakeDefinitionKind::Fake));
3348  }
3349 
3350  return DD->Definition;
3351  }
3352 
3353  if (auto *RD = dyn_cast<RecordDecl>(DC))
3354  return RD->getDefinition();
3355 
3356  if (auto *ED = dyn_cast<EnumDecl>(DC))
3357  return ED->getASTContext().getLangOpts().CPlusPlus? ED->getDefinition()
3358  : nullptr;
3359 
3360  if (auto *OID = dyn_cast<ObjCInterfaceDecl>(DC))
3361  return OID->getDefinition();
3362 
3363  // We can see the TU here only if we have no Sema object. In that case,
3364  // there's no TU scope to look in, so using the DC alone is sufficient.
3365  if (auto *TU = dyn_cast<TranslationUnitDecl>(DC))
3366  return TU;
3367 
3368  return nullptr;
3369 }
3370 
3371 ASTDeclReader::FindExistingResult::~FindExistingResult() {
3372  // Record that we had a typedef name for linkage whether or not we merge
3373  // with that declaration.
3374  if (TypedefNameForLinkage) {
3375  DeclContext *DC = New->getDeclContext()->getRedeclContext();
3376  Reader.ImportedTypedefNamesForLinkage.insert(
3377  std::make_pair(std::make_pair(DC, TypedefNameForLinkage), New));
3378  return;
3379  }
3380 
3381  if (!AddResult || Existing)
3382  return;
3383 
3384  DeclarationName Name = New->getDeclName();
3385  DeclContext *DC = New->getDeclContext()->getRedeclContext();
3387  setAnonymousDeclForMerging(Reader, New->getLexicalDeclContext(),
3388  AnonymousDeclNumber, New);
3389  } else if (DC->isTranslationUnit() &&
3390  !Reader.getContext().getLangOpts().CPlusPlus) {
3391  if (Reader.getIdResolver().tryAddTopLevelDecl(New, Name))
3392  Reader.PendingFakeLookupResults[Name.getAsIdentifierInfo()]
3393  .push_back(New);
3394  } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3395  // Add the declaration to its redeclaration context so later merging
3396  // lookups will find it.
3397  MergeDC->makeDeclVisibleInContextImpl(New, /*Internal*/true);
3398  }
3399 }
3400 
3401 /// Find the declaration that should be merged into, given the declaration found
3402 /// by name lookup. If we're merging an anonymous declaration within a typedef,
3403 /// we need a matching typedef, and we merge with the type inside it.
3405  bool IsTypedefNameForLinkage) {
3406  if (!IsTypedefNameForLinkage)
3407  return Found;
3408 
3409  // If we found a typedef declaration that gives a name to some other
3410  // declaration, then we want that inner declaration. Declarations from
3411  // AST files are handled via ImportedTypedefNamesForLinkage.
3412  if (Found->isFromASTFile())
3413  return nullptr;
3414 
3415  if (auto *TND = dyn_cast<TypedefNameDecl>(Found))
3416  return TND->getAnonDeclWithTypedefName(/*AnyRedecl*/true);
3417 
3418  return nullptr;
3419 }
3420 
3421 /// Find the declaration to use to populate the anonymous declaration table
3422 /// for the given lexical DeclContext. We only care about finding local
3423 /// definitions of the context; we'll merge imported ones as we go.
3424 DeclContext *
3425 ASTDeclReader::getPrimaryDCForAnonymousDecl(DeclContext *LexicalDC) {
3426  // For classes, we track the definition as we merge.
3427  if (auto *RD = dyn_cast<CXXRecordDecl>(LexicalDC)) {
3428  auto *DD = RD->getCanonicalDecl()->DefinitionData;
3429  return DD ? DD->Definition : nullptr;
3430  }
3431 
3432  // For anything else, walk its merged redeclarations looking for a definition.
3433  // Note that we can't just call getDefinition here because the redeclaration
3434  // chain isn't wired up.
3435  for (auto *D : merged_redecls(cast<Decl>(LexicalDC))) {
3436  if (auto *FD = dyn_cast<FunctionDecl>(D))
3437  if (FD->isThisDeclarationADefinition())
3438  return FD;
3439  if (auto *MD = dyn_cast<ObjCMethodDecl>(D))
3440  if (MD->isThisDeclarationADefinition())
3441  return MD;
3442  if (auto *RD = dyn_cast<RecordDecl>(D))
3443  if (RD->isThisDeclarationADefinition())
3444  return RD;
3445  }
3446 
3447  // No merged definition yet.
3448  return nullptr;
3449 }
3450 
3451 NamedDecl *ASTDeclReader::getAnonymousDeclForMerging(ASTReader &Reader,
3452  DeclContext *DC,
3453  unsigned Index) {
3454  // If the lexical context has been merged, look into the now-canonical
3455  // definition.
3456  auto *CanonDC = cast<Decl>(DC)->getCanonicalDecl();
3457 
3458  // If we've seen this before, return the canonical declaration.
3459  auto &Previous = Reader.AnonymousDeclarationsForMerging[CanonDC];
3460  if (Index < Previous.size() && Previous[Index])
3461  return Previous[Index];
3462 
3463  // If this is the first time, but we have parsed a declaration of the context,
3464  // build the anonymous declaration list from the parsed declaration.
3465  auto *PrimaryDC = getPrimaryDCForAnonymousDecl(DC);
3466  if (PrimaryDC && !cast<Decl>(PrimaryDC)->isFromASTFile()) {
3467  numberAnonymousDeclsWithin(PrimaryDC, [&](NamedDecl *ND, unsigned Number) {
3468  if (Previous.size() == Number)
3469  Previous.push_back(cast<NamedDecl>(ND->getCanonicalDecl()));
3470  else
3471  Previous[Number] = cast<NamedDecl>(ND->getCanonicalDecl());
3472  });
3473  }
3474 
3475  return Index < Previous.size() ? Previous[Index] : nullptr;
3476 }
3477 
3478 void ASTDeclReader::setAnonymousDeclForMerging(ASTReader &Reader,
3479  DeclContext *DC, unsigned Index,
3480  NamedDecl *D) {
3481  auto *CanonDC = cast<Decl>(DC)->getCanonicalDecl();
3482 
3483  auto &Previous = Reader.AnonymousDeclarationsForMerging[CanonDC];
3484  if (Index >= Previous.size())
3485  Previous.resize(Index + 1);
3486  if (!Previous[Index])
3487  Previous[Index] = D;
3488 }
3489 
3490 ASTDeclReader::FindExistingResult ASTDeclReader::findExisting(NamedDecl *D) {
3491  DeclarationName Name = TypedefNameForLinkage ? TypedefNameForLinkage
3492  : D->getDeclName();
3493 
3494  if (!Name && !needsAnonymousDeclarationNumber(D)) {
3495  // Don't bother trying to find unnamed declarations that are in
3496  // unmergeable contexts.
3497  FindExistingResult Result(Reader, D, /*Existing=*/nullptr,
3498  AnonymousDeclNumber, TypedefNameForLinkage);
3499  Result.suppress();
3500  return Result;
3501  }
3502 
3504  if (TypedefNameForLinkage) {
3505  auto It = Reader.ImportedTypedefNamesForLinkage.find(
3506  std::make_pair(DC, TypedefNameForLinkage));
3507  if (It != Reader.ImportedTypedefNamesForLinkage.end())
3508  if (isSameEntity(It->second, D))
3509  return FindExistingResult(Reader, D, It->second, AnonymousDeclNumber,
3510  TypedefNameForLinkage);
3511  // Go on to check in other places in case an existing typedef name
3512  // was not imported.
3513  }
3514 
3516  // This is an anonymous declaration that we may need to merge. Look it up
3517  // in its context by number.
3518  if (auto *Existing = getAnonymousDeclForMerging(
3519  Reader, D->getLexicalDeclContext(), AnonymousDeclNumber))
3520  if (isSameEntity(Existing, D))
3521  return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3522  TypedefNameForLinkage);
3523  } else if (DC->isTranslationUnit() &&
3524  !Reader.getContext().getLangOpts().CPlusPlus) {
3525  IdentifierResolver &IdResolver = Reader.getIdResolver();
3526 
3527  // Temporarily consider the identifier to be up-to-date. We don't want to
3528  // cause additional lookups here.
3529  class UpToDateIdentifierRAII {
3530  IdentifierInfo *II;
3531  bool WasOutToDate = false;
3532 
3533  public:
3534  explicit UpToDateIdentifierRAII(IdentifierInfo *II) : II(II) {
3535  if (II) {
3536  WasOutToDate = II->isOutOfDate();
3537  if (WasOutToDate)
3538  II->setOutOfDate(false);
3539  }
3540  }
3541 
3542  ~UpToDateIdentifierRAII() {
3543  if (WasOutToDate)
3544  II->setOutOfDate(true);
3545  }
3546  } UpToDate(Name.getAsIdentifierInfo());
3547 
3548  for (IdentifierResolver::iterator I = IdResolver.begin(Name),
3549  IEnd = IdResolver.end();
3550  I != IEnd; ++I) {
3551  if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3552  if (isSameEntity(Existing, D))
3553  return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3554  TypedefNameForLinkage);
3555  }
3556  } else if (DeclContext *MergeDC = getPrimaryContextForMerging(Reader, DC)) {
3557  DeclContext::lookup_result R = MergeDC->noload_lookup(Name);
3558  for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E; ++I) {
3559  if (NamedDecl *Existing = getDeclForMerging(*I, TypedefNameForLinkage))
3560  if (isSameEntity(Existing, D))
3561  return FindExistingResult(Reader, D, Existing, AnonymousDeclNumber,
3562  TypedefNameForLinkage);
3563  }
3564  } else {
3565  // Not in a mergeable context.
3566  return FindExistingResult(Reader);
3567  }
3568 
3569  // If this declaration is from a merged context, make a note that we need to
3570  // check that the canonical definition of that context contains the decl.
3571  //
3572  // FIXME: We should do something similar if we merge two definitions of the
3573  // same template specialization into the same CXXRecordDecl.
3574  auto MergedDCIt = Reader.MergedDeclContexts.find(D->getLexicalDeclContext());
3575  if (MergedDCIt != Reader.MergedDeclContexts.end() &&
3576  MergedDCIt->second == D->getDeclContext())
3577  Reader.PendingOdrMergeChecks.push_back(D);
3578 
3579  return FindExistingResult(Reader, D, /*Existing=*/nullptr,
3580  AnonymousDeclNumber, TypedefNameForLinkage);
3581 }
3582 
3583 template<typename DeclT>
3585  return D->RedeclLink.getLatestNotUpdated();
3586 }
3587 
3589  llvm_unreachable("getMostRecentDecl on non-redeclarable declaration");
3590 }
3591 
3593  assert(D);
3594 
3595  switch (D->getKind()) {
3596 #define ABSTRACT_DECL(TYPE)
3597 #define DECL(TYPE, BASE) \
3598  case Decl::TYPE: \
3599  return getMostRecentDeclImpl(cast<TYPE##Decl>(D));
3600 #include "clang/AST/DeclNodes.inc"
3601  }
3602  llvm_unreachable("unknown decl kind");
3603 }
3604 
3605 Decl *ASTReader::getMostRecentExistingDecl(Decl *D) {
3607 }
3608 
3610  Decl *Previous) {
3611  InheritableAttr *NewAttr = nullptr;
3612  ASTContext &Context = Reader.getContext();
3613  const auto *IA = Previous->getAttr<MSInheritanceAttr>();
3614 
3615  if (IA && !D->hasAttr<MSInheritanceAttr>()) {
3616  NewAttr = cast<InheritableAttr>(IA->clone(Context));
3617  NewAttr->setInherited(true);
3618  D->addAttr(NewAttr);
3619  }
3620 }
3621 
3622 template<typename DeclT>
3625  Decl *Previous, Decl *Canon) {
3626  D->RedeclLink.setPrevious(cast<DeclT>(Previous));
3627  D->First = cast<DeclT>(Previous)->First;
3628 }
3629 
3630 namespace clang {
3631 
3632 template<>
3635  Decl *Previous, Decl *Canon) {
3636  auto *VD = static_cast<VarDecl *>(D);
3637  auto *PrevVD = cast<VarDecl>(Previous);
3638  D->RedeclLink.setPrevious(PrevVD);
3639  D->First = PrevVD->First;
3640 
3641  // We should keep at most one definition on the chain.
3642  // FIXME: Cache the definition once we've found it. Building a chain with
3643  // N definitions currently takes O(N^2) time here.
3644  if (VD->isThisDeclarationADefinition() == VarDecl::Definition) {
3645  for (VarDecl *CurD = PrevVD; CurD; CurD = CurD->getPreviousDecl()) {
3646  if (CurD->isThisDeclarationADefinition() == VarDecl::Definition) {
3647  Reader.mergeDefinitionVisibility(CurD, VD);
3648  VD->demoteThisDefinitionToDeclaration();
3649  break;
3650  }
3651  }
3652  }
3653 }
3654 
3656  auto *DT = T->getContainedDeducedType();
3657  return DT && !DT->isDeduced();
3658 }
3659 
3660 template<>
3663  Decl *Previous, Decl *Canon) {
3664  auto *FD = static_cast<FunctionDecl *>(D);
3665  auto *PrevFD = cast<FunctionDecl>(Previous);
3666 
3667  FD->RedeclLink.setPrevious(PrevFD);
3668  FD->First = PrevFD->First;
3669 
3670  // If the previous declaration is an inline function declaration, then this
3671  // declaration is too.
3672  if (PrevFD->isInlined() != FD->isInlined()) {
3673  // FIXME: [dcl.fct.spec]p4:
3674  // If a function with external linkage is declared inline in one
3675  // translation unit, it shall be declared inline in all translation
3676  // units in which it appears.
3677  //
3678  // Be careful of this case:
3679  //
3680  // module A:
3681  // template<typename T> struct X { void f(); };
3682  // template<typename T> inline void X<T>::f() {}
3683  //
3684  // module B instantiates the declaration of X<int>::f
3685  // module C instantiates the definition of X<int>::f
3686  //
3687  // If module B and C are merged, we do not have a violation of this rule.
3688  FD->setImplicitlyInline(true);
3689  }
3690 
3691  auto *FPT = FD->getType()->getAs<FunctionProtoType>();
3692  auto *PrevFPT = PrevFD->getType()->getAs<FunctionProtoType>();
3693  if (FPT && PrevFPT) {
3694  // If we need to propagate an exception specification along the redecl
3695  // chain, make a note of that so that we can do so later.
3696  bool IsUnresolved = isUnresolvedExceptionSpec(FPT->getExceptionSpecType());
3697  bool WasUnresolved =
3699  if (IsUnresolved != WasUnresolved)
3700  Reader.PendingExceptionSpecUpdates.insert(
3701  {Canon, IsUnresolved ? PrevFD : FD});
3702 
3703  // If we need to propagate a deduced return type along the redecl chain,
3704  // make a note of that so that we can do it later.
3705  bool IsUndeduced = isUndeducedReturnType(FPT->getReturnType());
3706  bool WasUndeduced = isUndeducedReturnType(PrevFPT->getReturnType());
3707  if (IsUndeduced != WasUndeduced)
3708  Reader.PendingDeducedTypeUpdates.insert(
3709  {cast<FunctionDecl>(Canon),
3710  (IsUndeduced ? PrevFPT : FPT)->getReturnType()});
3711  }
3712 }
3713 
3714 } // namespace clang
3715 
3717  llvm_unreachable("attachPreviousDecl on non-redeclarable declaration");
3718 }
3719 
3720 /// Inherit the default template argument from \p From to \p To. Returns
3721 /// \c false if there is no default template for \p From.
3722 template <typename ParmDecl>
3723 static bool inheritDefaultTemplateArgument(ASTContext &Context, ParmDecl *From,
3724  Decl *ToD) {
3725  auto *To = cast<ParmDecl>(ToD);
3726  if (!From->hasDefaultArgument())
3727  return false;
3728  To->setInheritedDefaultArgument(Context, From);
3729  return true;
3730 }
3731 
3733  TemplateDecl *From,
3734  TemplateDecl *To) {
3735  auto *FromTP = From->getTemplateParameters();
3736  auto *ToTP = To->getTemplateParameters();
3737  assert(FromTP->size() == ToTP->size() && "merged mismatched templates?");
3738 
3739  for (unsigned I = 0, N = FromTP->size(); I != N; ++I) {
3740  NamedDecl *FromParam = FromTP->getParam(I);
3741  NamedDecl *ToParam = ToTP->getParam(I);
3742 
3743  if (auto *FTTP = dyn_cast<TemplateTypeParmDecl>(FromParam))
3744  inheritDefaultTemplateArgument(Context, FTTP, ToParam);
3745  else if (auto *FNTTP = dyn_cast<NonTypeTemplateParmDecl>(FromParam))
3746  inheritDefaultTemplateArgument(Context, FNTTP, ToParam);
3747  else
3749  Context, cast<TemplateTemplateParmDecl>(FromParam), ToParam);
3750  }
3751 }
3752 
3754  Decl *Previous, Decl *Canon) {
3755  assert(D && Previous);
3756 
3757  switch (D->getKind()) {
3758 #define ABSTRACT_DECL(TYPE)
3759 #define DECL(TYPE, BASE) \
3760  case Decl::TYPE: \
3761  attachPreviousDeclImpl(Reader, cast<TYPE##Decl>(D), Previous, Canon); \
3762  break;
3763 #include "clang/AST/DeclNodes.inc"
3764  }
3765 
3766  // If the declaration was visible in one module, a redeclaration of it in
3767  // another module remains visible even if it wouldn't be visible by itself.
3768  //
3769  // FIXME: In this case, the declaration should only be visible if a module
3770  // that makes it visible has been imported.
3771  D->IdentifierNamespace |=
3772  Previous->IdentifierNamespace &
3774 
3775  // If the declaration declares a template, it may inherit default arguments
3776  // from the previous declaration.
3777  if (auto *TD = dyn_cast<TemplateDecl>(D))
3779  cast<TemplateDecl>(Previous), TD);
3780 
3781  // If any of the declaration in the chain contains an Inheritable attribute,
3782  // it needs to be added to all the declarations in the redeclarable chain.
3783  // FIXME: Only the logic of merging MSInheritableAttr is present, it should
3784  // be extended for all inheritable attributes.
3785  mergeInheritableAttributes(Reader, D, Previous);
3786 }
3787 
3788 template<typename DeclT>
3790  D->RedeclLink.setLatest(cast<DeclT>(Latest));
3791 }
3792 
3794  llvm_unreachable("attachLatestDecl on non-redeclarable declaration");
3795 }
3796 
3798  assert(D && Latest);
3799 
3800  switch (D->getKind()) {
3801 #define ABSTRACT_DECL(TYPE)
3802 #define DECL(TYPE, BASE) \
3803  case Decl::TYPE: \
3804  attachLatestDeclImpl(cast<TYPE##Decl>(D), Latest); \
3805  break;
3806 #include "clang/AST/DeclNodes.inc"
3807  }
3808 }
3809 
3810 template<typename DeclT>
3812  D->RedeclLink.markIncomplete();
3813 }
3814 
3816  llvm_unreachable("markIncompleteDeclChain on non-redeclarable declaration");
3817 }
3818 
3819 void ASTReader::markIncompleteDeclChain(Decl *D) {
3820  switch (D->getKind()) {
3821 #define ABSTRACT_DECL(TYPE)
3822 #define DECL(TYPE, BASE) \
3823  case Decl::TYPE: \
3824  ASTDeclReader::markIncompleteDeclChainImpl(cast<TYPE##Decl>(D)); \
3825  break;
3826 #include "clang/AST/DeclNodes.inc"
3827  }
3828 }
3829 
3830 /// Read the declaration at the given offset from the AST file.
3831 Decl *ASTReader::ReadDeclRecord(DeclID ID) {
3832  unsigned Index = ID - NUM_PREDEF_DECL_IDS;
3833  SourceLocation DeclLoc;
3834  RecordLocation Loc = DeclCursorForID(ID, DeclLoc);
3835  llvm::BitstreamCursor &DeclsCursor = Loc.F->DeclsCursor;
3836  // Keep track of where we are in the stream, then jump back there
3837  // after reading this declaration.
3838  SavedStreamPosition SavedPosition(DeclsCursor);
3839 
3840  ReadingKindTracker ReadingKind(Read_Decl, *this);
3841 
3842  // Note that we are loading a declaration record.
3843  Deserializing ADecl(this);
3844 
3845  auto Fail = [](const char *what, llvm::Error &&Err) {
3846  llvm::report_fatal_error(Twine("ASTReader::readDeclRecord failed ") + what +
3847  ": " + toString(std::move(Err)));
3848  };
3849 
3850  if (llvm::Error JumpFailed = DeclsCursor.JumpToBit(Loc.Offset))
3851  Fail("jumping", std::move(JumpFailed));
3852  ASTRecordReader Record(*this, *Loc.F);
3853  ASTDeclReader Reader(*this, Record, Loc, ID, DeclLoc);
3854  Expected<unsigned> MaybeCode = DeclsCursor.ReadCode();
3855  if (!MaybeCode)
3856  Fail("reading code", MaybeCode.takeError());
3857  unsigned Code = MaybeCode.get();
3858 
3859  ASTContext &Context = getContext();
3860  Decl *D = nullptr;
3861  Expected<unsigned> MaybeDeclCode = Record.readRecord(DeclsCursor, Code);
3862  if (!MaybeDeclCode)
3863  llvm::report_fatal_error(
3864  Twine("ASTReader::readDeclRecord failed reading decl code: ") +
3865  toString(MaybeDeclCode.takeError()));
3866  switch ((DeclCode)MaybeDeclCode.get()) {
3867  case DECL_CONTEXT_LEXICAL:
3868  case DECL_CONTEXT_VISIBLE:
3869  llvm_unreachable("Record cannot be de-serialized with readDeclRecord");
3870  case DECL_TYPEDEF:
3871  D = TypedefDecl::CreateDeserialized(Context, ID);
3872  break;
3873  case DECL_TYPEALIAS:
3874  D = TypeAliasDecl::CreateDeserialized(Context, ID);
3875  break;
3876  case DECL_ENUM:
3877  D = EnumDecl::CreateDeserialized(Context, ID);
3878  break;
3879  case DECL_RECORD:
3880  D = RecordDecl::CreateDeserialized(Context, ID);
3881  break;
3882  case DECL_ENUM_CONSTANT:
3884  break;
3885  case DECL_FUNCTION:
3886  D = FunctionDecl::CreateDeserialized(Context, ID);
3887  break;
3888  case DECL_LINKAGE_SPEC:
3890  break;
3891  case DECL_EXPORT:
3892  D = ExportDecl::CreateDeserialized(Context, ID);
3893  break;
3894  case DECL_LABEL:
3895  D = LabelDecl::CreateDeserialized(Context, ID);
3896  break;
3897  case DECL_NAMESPACE:
3898  D = NamespaceDecl::CreateDeserialized(Context, ID);
3899  break;
3900  case DECL_NAMESPACE_ALIAS:
3902  break;
3903  case DECL_USING:
3904  D = UsingDecl::CreateDeserialized(Context, ID);
3905  break;
3906  case DECL_USING_PACK:
3907  D = UsingPackDecl::CreateDeserialized(Context, ID, Record.readInt());
3908  break;
3909  case DECL_USING_SHADOW:
3911  break;
3912  case DECL_USING_ENUM:
3913  D = UsingEnumDecl::CreateDeserialized(Context, ID);
3914  break;
3917  break;
3918  case DECL_USING_DIRECTIVE:
3920  break;
3923  break;
3926  break;
3929  break;
3930  case DECL_CXX_RECORD:
3931  D = CXXRecordDecl::CreateDeserialized(Context, ID);
3932  break;
3935  break;
3936  case DECL_CXX_METHOD:
3937  D = CXXMethodDecl::CreateDeserialized(Context, ID);
3938  break;
3939  case DECL_CXX_CONSTRUCTOR:
3940  D = CXXConstructorDecl::CreateDeserialized(Context, ID, Record.readInt());
3941  break;
3942  case DECL_CXX_DESTRUCTOR:
3944  break;
3945  case DECL_CXX_CONVERSION:
3947  break;
3948  case DECL_ACCESS_SPEC:
3949  D = AccessSpecDecl::CreateDeserialized(Context, ID);
3950  break;
3951  case DECL_FRIEND:
3952  D = FriendDecl::CreateDeserialized(Context, ID, Record.readInt());
3953  break;
3954  case DECL_FRIEND_TEMPLATE:
3956  break;
3957  case DECL_CLASS_TEMPLATE:
3959  break;
3962  break;
3965  break;
3966  case DECL_VAR_TEMPLATE:
3968  break;
3971  break;
3974  break;
3977  break;
3980  break;
3981  case DECL_TEMPLATE_TYPE_PARM: {
3982  bool HasTypeConstraint = Record.readInt();
3984  HasTypeConstraint);
3985  break;
3986  }
3988  bool HasTypeConstraint = Record.readInt();
3990  HasTypeConstraint);
3991  break;
3992  }
3994  bool HasTypeConstraint = Record.readInt();
3996  Record.readInt(),
3997  HasTypeConstraint);
3998  break;
3999  }
4002  break;
4005  Record.readInt());
4006  break;
4009  break;
4010  case DECL_CONCEPT:
4011  D = ConceptDecl::CreateDeserialized(Context, ID);
4012  break;
4015  break;
4016  case DECL_STATIC_ASSERT:
4018  break;
4019  case DECL_OBJC_METHOD:
4020  D = ObjCMethodDecl::CreateDeserialized(Context, ID);
4021  break;
4022  case DECL_OBJC_INTERFACE:
4024  break;
4025  case DECL_OBJC_IVAR:
4026  D = ObjCIvarDecl::CreateDeserialized(Context, ID);
4027  break;
4028  case DECL_OBJC_PROTOCOL:
4030  break;
4033  break;
4034  case DECL_OBJC_CATEGORY:
4036  break;
4039  break;
4042  break;
4045  break;
4046  case DECL_OBJC_PROPERTY:
4048  break;
4051  break;
4052  case DECL_FIELD:
4053  D = FieldDecl::CreateDeserialized(Context, ID);
4054  break;
4055  case DECL_INDIRECTFIELD:
4057  break;
4058  case DECL_VAR:
4059  D = VarDecl::CreateDeserialized(Context, ID);
4060  break;
4061  case DECL_IMPLICIT_PARAM:
4063  break;
4064  case DECL_PARM_VAR:
4065  D = ParmVarDecl::CreateDeserialized(Context, ID);
4066  break;
4067  case DECL_DECOMPOSITION:
4068  D = DecompositionDecl::CreateDeserialized(Context, ID, Record.readInt());
4069  break;
4070  case DECL_BINDING:
4071  D = BindingDecl::CreateDeserialized(Context, ID);
4072  break;
4073  case DECL_FILE_SCOPE_ASM:
4075  break;
4076  case DECL_BLOCK:
4077  D = BlockDecl::CreateDeserialized(Context, ID);
4078  break;
4079  case DECL_MS_PROPERTY:
4080  D = MSPropertyDecl::CreateDeserialized(Context, ID);
4081  break;
4082  case DECL_MS_GUID:
4083  D = MSGuidDecl::CreateDeserialized(Context, ID);
4084  break;
4086  D = TemplateParamObjectDecl::CreateDeserialized(Context, ID);
4087  break;
4088  case DECL_CAPTURED:
4089  D = CapturedDecl::CreateDeserialized(Context, ID, Record.readInt());
4090  break;
4092  Error("attempt to read a C++ base-specifier record as a declaration");
4093  return nullptr;
4095  Error("attempt to read a C++ ctor initializer record as a declaration");
4096  return nullptr;
4097  case DECL_IMPORT:
4098  // Note: last entry of the ImportDecl record is the number of stored source
4099  // locations.
4100  D = ImportDecl::CreateDeserialized(Context, ID, Record.back());
4101  break;
4102  case DECL_OMP_THREADPRIVATE: {
4103  Record.skipInts(1);
4104  unsigned NumChildren = Record.readInt();
4105  Record.skipInts(1);
4106  D = OMPThreadPrivateDecl::CreateDeserialized(Context, ID, NumChildren);
4107  break;
4108  }
4109  case DECL_OMP_ALLOCATE: {
4110  unsigned NumClauses = Record.readInt();
4111  unsigned NumVars = Record.readInt();
4112  Record.skipInts(1);
4113  D = OMPAllocateDecl::CreateDeserialized(Context, ID, NumVars, NumClauses);
4114  break;
4115  }
4116  case DECL_OMP_REQUIRES: {
4117  unsigned NumClauses = Record.readInt();
4118  Record.skipInts(2);
4119  D = OMPRequiresDecl::CreateDeserialized(Context, ID, NumClauses);
4120  break;
4121  }
4124  break;
4125  case DECL_OMP_DECLARE_MAPPER: {
4126  unsigned NumClauses = Record.readInt();
4127  Record.skipInts(2);
4128  D = OMPDeclareMapperDecl::CreateDeserialized(Context, ID, NumClauses);
4129  break;
4130  }
4131  case DECL_OMP_CAPTUREDEXPR:
4133  break;
4134  case DECL_PRAGMA_COMMENT:
4135  D = PragmaCommentDecl::CreateDeserialized(Context, ID, Record.readInt());
4136  break;
4139  Record.readInt());
4140  break;
4141  case DECL_EMPTY:
4142  D = EmptyDecl::CreateDeserialized(Context, ID);
4143  break;
4146  break;
4147  case DECL_OBJC_TYPE_PARAM:
4149  break;
4150  }
4151 
4152  assert(D && "Unknown declaration reading AST file");
4153  LoadedDecl(Index, D);
4154  // Set the DeclContext before doing any deserialization, to make sure internal
4155  // calls to Decl::getASTContext() by Decl's methods will find the
4156  // TranslationUnitDecl without crashing.
4157  D->setDeclContext(Context.getTranslationUnitDecl());
4158  Reader.Visit(D);
4159 
4160  // If this declaration is also a declaration context, get the
4161  // offsets for its tables of lexical and visible declarations.
4162  if (auto *DC = dyn_cast<DeclContext>(D)) {
4163  std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
4164  if (Offsets.first &&
4165  ReadLexicalDeclContextStorage(*Loc.F, DeclsCursor, Offsets.first, DC))
4166  return nullptr;
4167  if (Offsets.second &&
4168  ReadVisibleDeclContextStorage(*Loc.F, DeclsCursor, Offsets.second, ID))
4169  return nullptr;
4170  }
4171  assert(Record.getIdx() == Record.size());
4172 
4173  // Load any relevant update records.
4174  PendingUpdateRecords.push_back(
4175  PendingUpdateRecord(ID, D, /*JustLoaded=*/true));
4176 
4177  // Load the categories after recursive loading is finished.
4178  if (auto *Class = dyn_cast<ObjCInterfaceDecl>(D))
4179  // If we already have a definition when deserializing the ObjCInterfaceDecl,
4180  // we put the Decl in PendingDefinitions so we can pull the categories here.
4181  if (Class->isThisDeclarationADefinition() ||
4182  PendingDefinitions.count(Class))
4183  loadObjCCategories(ID, Class);
4184 
4185  // If we have deserialized a declaration that has a definition the
4186  // AST consumer might need to know about, queue it.
4187  // We don't pass it to the consumer immediately because we may be in recursive
4188  // loading, and some declarations may still be initializing.
4189  PotentiallyInterestingDecls.push_back(
4190  InterestingDecl(D, Reader.hasPendingBody()));
4191 
4192  return D;
4193 }
4194 
4195 void ASTReader::PassInterestingDeclsToConsumer() {
4196  assert(Consumer);
4197 
4198  if (PassingDeclsToConsumer)
4199  return;
4200 
4201  // Guard variable to avoid recursively redoing the process of passing
4202  // decls to consumer.
4203  SaveAndRestore<bool> GuardPassingDeclsToConsumer(PassingDeclsToConsumer,
4204  true);
4205 
4206  // Ensure that we've loaded all potentially-interesting declarations
4207  // that need to be eagerly loaded.
4208  for (auto ID : EagerlyDeserializedDecls)
4209  GetDecl(ID);
4210  EagerlyDeserializedDecls.clear();
4211 
4212  while (!PotentiallyInterestingDecls.empty()) {
4213  InterestingDecl D = PotentiallyInterestingDecls.front();
4214  PotentiallyInterestingDecls.pop_front();
4215  if (isConsumerInterestedIn(getContext(), D.getDecl(), D.hasPendingBody()))
4216  PassInterestingDeclToConsumer(D.getDecl());
4217  }
4218 }
4219 
4220 void ASTReader::loadDeclUpdateRecords(PendingUpdateRecord &Record) {
4221  // The declaration may have been modified by files later in the chain.
4222  // If this is the case, read the record containing the updates from each file
4223  // and pass it to ASTDeclReader to make the modifications.
4224  serialization::GlobalDeclID ID = Record.ID;
4225  Decl *D = Record.D;
4226  ProcessingUpdatesRAIIObj ProcessingUpdates(*this);
4227  DeclUpdateOffsetsMap::iterator UpdI = DeclUpdateOffsets.find(ID);
4228 
4229  SmallVector<serialization::DeclID, 8> PendingLazySpecializationIDs;
4230 
4231  if (UpdI != DeclUpdateOffsets.end()) {
4232  auto UpdateOffsets = std::move(UpdI->second);
4233  DeclUpdateOffsets.erase(UpdI);
4234 
4235  // Check if this decl was interesting to the consumer. If we just loaded
4236  // the declaration, then we know it was interesting and we skip the call
4237  // to isConsumerInterestedIn because it is unsafe to call in the
4238  // current ASTReader state.
4239  bool WasInteresting =
4240  Record.JustLoaded || isConsumerInterestedIn(getContext(), D, false);
4241  for (auto &FileAndOffset : UpdateOffsets) {
4242  ModuleFile *F = FileAndOffset.first;
4243  uint64_t Offset = FileAndOffset.second;
4244  llvm::BitstreamCursor &Cursor = F->DeclsCursor;
4245  SavedStreamPosition SavedPosition(Cursor);
4246  if (llvm::Error JumpFailed = Cursor.JumpToBit(Offset))
4247  // FIXME don't do a fatal error.
4248  llvm::report_fatal_error(
4249  Twine("ASTReader::loadDeclUpdateRecords failed jumping: ") +
4250  toString(std::move(JumpFailed)));
4251  Expected<unsigned> MaybeCode = Cursor.ReadCode();
4252  if (!MaybeCode)
4253  llvm::report_fatal_error(
4254  Twine("ASTReader::loadDeclUpdateRecords failed reading code: ") +
4255  toString(MaybeCode.takeError()));
4256  unsigned Code = MaybeCode.get();
4257  ASTRecordReader Record(*this, *F);
4258  if (Expected<unsigned> MaybeRecCode = Record.readRecord(Cursor, Code))
4259  assert(MaybeRecCode.get() == DECL_UPDATES &&
4260  "Expected DECL_UPDATES record!");
4261  else
4262  llvm::report_fatal_error(
4263  Twine("ASTReader::loadDeclUpdateRecords failed reading rec code: ") +
4264  toString(MaybeCode.takeError()));
4265 
4266  ASTDeclReader Reader(*this, Record, RecordLocation(F, Offset), ID,
4267  SourceLocation());
4268  Reader.UpdateDecl(D, PendingLazySpecializationIDs);
4269 
4270  // We might have made this declaration interesting. If so, remember that
4271  // we need to hand it off to the consumer.
4272  if (!WasInteresting &&
4273  isConsumerInterestedIn(getContext(), D, Reader.hasPendingBody())) {
4274  PotentiallyInterestingDecls.push_back(
4275  InterestingDecl(D, Reader.hasPendingBody()));
4276  WasInteresting = true;
4277  }
4278  }
4279  }
4280  // Add the lazy specializations to the template.
4281  assert((PendingLazySpecializationIDs.empty() || isa<ClassTemplateDecl>(D) ||
4282  isa<FunctionTemplateDecl>(D) || isa<VarTemplateDecl>(D)) &&
4283  "Must not have pending specializations");
4284  if (auto *CTD = dyn_cast<ClassTemplateDecl>(D))
4285  ASTDeclReader::AddLazySpecializations(CTD, PendingLazySpecializationIDs);
4286  else if (auto *FTD = dyn_cast<FunctionTemplateDecl>(D))
4287  ASTDeclReader::AddLazySpecializations(FTD, PendingLazySpecializationIDs);
4288  else if (auto *VTD = dyn_cast<VarTemplateDecl>(D))
4289  ASTDeclReader::AddLazySpecializations(VTD, PendingLazySpecializationIDs);
4290  PendingLazySpecializationIDs.clear();
4291 
4292  // Load the pending visible updates for this decl context, if it has any.
4293  auto I = PendingVisibleUpdates.find(ID);
4294  if (I != PendingVisibleUpdates.end()) {
4295  auto VisibleUpdates = std::move(I->second);
4296  PendingVisibleUpdates.erase(I);
4297 
4298  auto *DC = cast<DeclContext>(D)->getPrimaryContext();
4299  for (const auto &Update : VisibleUpdates)
4300  Lookups[DC].Table.add(
4301  Update.Mod, Update.Data,
4303  DC->setHasExternalVisibleStorage(true);
4304  }
4305 }
4306 
4307 void ASTReader::loadPendingDeclChain(Decl *FirstLocal, uint64_t LocalOffset) {
4308  // Attach FirstLocal to the end of the decl chain.
4309  Decl *CanonDecl = FirstLocal->getCanonicalDecl();
4310  if (FirstLocal != CanonDecl) {
4311  Decl *PrevMostRecent = ASTDeclReader::getMostRecentDecl(CanonDecl);
4313  *this, FirstLocal, PrevMostRecent ? PrevMostRecent : CanonDecl,
4314  CanonDecl);
4315  }
4316 
4317  if (!LocalOffset) {
4318  ASTDeclReader::attachLatestDecl(CanonDecl, FirstLocal);
4319  return;
4320  }
4321 
4322  // Load the list of other redeclarations from this module file.
4323  ModuleFile *M = getOwningModuleFile(FirstLocal);
4324  assert(M && "imported decl from no module file");
4325 
4326  llvm::BitstreamCursor &Cursor = M->DeclsCursor;
4327  SavedStreamPosition SavedPosition(Cursor);
4328  if (llvm::Error JumpFailed = Cursor.JumpToBit(LocalOffset))
4329  llvm::report_fatal_error(
4330  Twine("ASTReader::loadPendingDeclChain failed jumping: ") +
4331  toString(std::move(JumpFailed)));
4332 
4333  RecordData Record;
4334  Expected<unsigned> MaybeCode = Cursor.ReadCode();
4335  if (!MaybeCode)
4336  llvm::report_fatal_error(
4337  Twine("ASTReader::loadPendingDeclChain failed reading code: ") +
4338  toString(MaybeCode.takeError()));
4339  unsigned Code = MaybeCode.get();
4340  if (Expected<unsigned> MaybeRecCode = Cursor.readRecord(Code, Record))
4341  assert(MaybeRecCode.get() == LOCAL_REDECLARATIONS &&
4342  "expected LOCAL_REDECLARATIONS record!");
4343  else
4344  llvm::report_fatal_error(
4345  Twine("ASTReader::loadPendingDeclChain failed reading rec code: ") +
4346  toString(MaybeCode.takeError()));
4347 
4348  // FIXME: We have several different dispatches on decl kind here; maybe
4349  // we should instead generate one loop per kind and dispatch up-front?
4350  Decl *MostRecent = FirstLocal;
4351  for (unsigned I = 0, N = Record.size(); I != N; ++I) {
4352  auto *D = GetLocalDecl(*M, Record[N - I - 1]);
4353  ASTDeclReader::attachPreviousDecl(*this, D, MostRecent, CanonDecl);
4354  MostRecent = D;
4355  }
4356  ASTDeclReader::attachLatestDecl(CanonDecl, MostRecent);
4357 }
4358 
4359 namespace {
4360 
4361  /// Given an ObjC interface, goes through the modules and links to the
4362  /// interface all the categories for it.
4363  class ObjCCategoriesVisitor {
4364  ASTReader &Reader;
4365  ObjCInterfaceDecl *Interface;
4366  llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized;
4367  ObjCCategoryDecl *Tail = nullptr;
4368  llvm::DenseMap<DeclarationName, ObjCCategoryDecl *> NameCategoryMap;
4369  serialization::GlobalDeclID InterfaceID;
4370  unsigned PreviousGeneration;
4371 
4372  void add(ObjCCategoryDecl *Cat) {
4373  // Only process each category once.
4374  if (!Deserialized.erase(Cat))
4375  return;
4376 
4377  // Check for duplicate categories.
4378  if (Cat->getDeclName()) {
4379  ObjCCategoryDecl *&Existing = NameCategoryMap[Cat->getDeclName()];
4380  if (Existing &&
4381  Reader.getOwningModuleFile(Existing)
4382  != Reader.getOwningModuleFile(Cat)) {
4383  // FIXME: We should not warn for duplicates in diamond:
4384  //
4385  // MT //
4386  // / \ //
4387  // ML MR //
4388  // \ / //
4389  // MB //
4390  //
4391  // If there are duplicates in ML/MR, there will be warning when
4392  // creating MB *and* when importing MB. We should not warn when
4393  // importing.
4394  Reader.Diag(Cat->getLocation(), diag::warn_dup_category_def)
4395  << Interface->getDeclName() << Cat->getDeclName();
4396  Reader.Diag(Existing->getLocation(), diag::note_previous_definition);
4397  } else if (!Existing) {
4398  // Record this category.
4399  Existing = Cat;
4400  }
4401  }
4402 
4403  // Add this category to the end of the chain.
4404  if (Tail)
4406  else
4407  Interface->setCategoryListRaw(Cat);
4408  Tail = Cat;
4409  }
4410 
4411  public:
4412  ObjCCategoriesVisitor(ASTReader &Reader,
4413  ObjCInterfaceDecl *Interface,
4414  llvm::SmallPtrSetImpl<ObjCCategoryDecl *> &Deserialized,
4415  serialization::GlobalDeclID InterfaceID,
4416  unsigned PreviousGeneration)
4417  : Reader(Reader), Interface(Interface), Deserialized(Deserialized),
4418  InterfaceID(InterfaceID), PreviousGeneration(PreviousGeneration) {
4419  // Populate the name -> category map with the set of known categories.
4420  for (auto *Cat : Interface->known_categories()) {
4421  if (Cat->getDeclName())
4422  NameCategoryMap[Cat->getDeclName()] = Cat;
4423 
4424  // Keep track of the tail of the category list.
4425  Tail = Cat;
4426  }
4427  }
4428 
4429  bool operator()(ModuleFile &M) {
4430  // If we've loaded all of the category information we care about from
4431  // this module file, we're done.
4432  if (M.Generation <= PreviousGeneration)
4433  return true;
4434 
4435  // Map global ID of the definition down to the local ID used in this
4436  // module file. If there is no such mapping, we'll find nothing here
4437  // (or in any module it imports).
4438  DeclID LocalID = Reader.mapGlobalIDToModuleFileGlobalID(M, InterfaceID);
4439  if (!LocalID)
4440  return true;
4441 
4442  // Perform a binary search to find the local redeclarations for this
4443  // declaration (if any).
4444  const ObjCCategoriesInfo Compare = { LocalID, 0 };
4445  const ObjCCategoriesInfo *Result
4446  = std::lower_bound(M.ObjCCategoriesMap,
4448  Compare);
4449  if (Result == M.ObjCCategoriesMap + M.LocalNumObjCCategoriesInMap ||
4450  Result->DefinitionID != LocalID) {
4451  // We didn't find anything. If the class definition is in this module
4452  // file, then the module files it depends on cannot have any categories,
4453  // so suppress further lookup.
4454  return Reader.isDeclIDFromModule(InterfaceID, M);
4455  }
4456 
4457  // We found something. Dig out all of the categories.
4458  unsigned Offset = Result->Offset;
4459  unsigned N = M.ObjCCategories[Offset];
4460  M.ObjCCategories[Offset++] = 0; // Don't try to deserialize again
4461  for (unsigned I = 0; I != N; ++I)
4462  add(cast_or_null<ObjCCategoryDecl>(
4463  Reader.GetLocalDecl(M, M.ObjCCategories[Offset++])));
4464  return true;
4465  }
4466  };
4467 
4468 } // namespace
4469 
4470 void ASTReader::loadObjCCategories(serialization::GlobalDeclID ID,
4471  ObjCInterfaceDecl *D,
4472  unsigned PreviousGeneration) {
4473  ObjCCategoriesVisitor Visitor(*this, D, CategoriesDeserialized, ID,
4474  PreviousGeneration);
4475  ModuleMgr.visit(Visitor);
4476 }
4477 
4478 template<typename DeclT, typename Fn>
4479 static void forAllLaterRedecls(DeclT *D, Fn F) {
4480  F(D);
4481 
4482  // Check whether we've already merged D into its redeclaration chain.
4483  // MostRecent may or may not be nullptr if D has not been merged. If
4484  // not, walk the merged redecl chain and see if it's there.
4485  auto *MostRecent = D->getMostRecentDecl();
4486  bool Found = false;
4487  for (auto *Redecl = MostRecent; Redecl && !Found;
4488  Redecl = Redecl->getPreviousDecl())
4489  Found = (Redecl == D);
4490 
4491  // If this declaration is merged, apply the functor to all later decls.
4492  if (Found) {
4493  for (auto *Redecl = MostRecent; Redecl != D;
4494  Redecl = Redecl->getPreviousDecl())
4495  F(Redecl);
4496  }
4497 }
4498 
4500  llvm::SmallVectorImpl<serialization::DeclID> &PendingLazySpecializationIDs) {
4501  while (Record.getIdx() < Record.size()) {
4502  switch ((DeclUpdateKind)Record.readInt()) {
4504  auto *RD = cast<CXXRecordDecl>(D);
4505  // FIXME: If we also have an update record for instantiating the
4506  // definition of D, we need that to happen before we get here.
4507  Decl *MD = Record.readDecl();
4508  assert(MD && "couldn't read decl from update record");
4509  // FIXME: We should call addHiddenDecl instead, to add the member
4510  // to its DeclContext.
4511  RD->addedMember(MD);
4512  break;
4513  }
4514 
4516  // It will be added to the template's lazy specialization set.
4517  PendingLazySpecializationIDs.push_back(readDeclID());
4518  break;
4519 
4521  auto *Anon = readDeclAs<NamespaceDecl>();
4522 
4523  // Each module has its own anonymous namespace, which is disjoint from
4524  // any other module's anonymous namespaces, so don't attach the anonymous
4525  // namespace at all.
4526  if (!Record.isModule()) {
4527  if (auto *TU = dyn_cast<TranslationUnitDecl>(D))
4528  TU->setAnonymousNamespace(Anon);
4529  else
4530  cast<NamespaceDecl>(D)->setAnonymousNamespace(Anon);
4531  }
4532  break;
4533  }
4534 
4536  auto *VD = cast<VarDecl>(D);
4537  VD->NonParmVarDeclBits.IsInline = Record.readInt();
4538  VD->NonParmVarDeclBits.IsInlineSpecified = Record.readInt();
4539  uint64_t Val = Record.readInt();
4540  if (Val && !VD->getInit()) {
4541  VD->setInit(Record.readExpr());
4542  if (Val != 1) {
4543  EvaluatedStmt *Eval = VD->ensureEvaluatedStmt();
4544  Eval->HasConstantInitialization = (Val & 2) != 0;
4545  Eval->HasConstantDestruction = (Val & 4) != 0;
4546  }
4547  }
4548  break;
4549  }
4550 
4552  SourceLocation POI = Record.readSourceLocation();
4553  if (auto *VTSD = dyn_cast<VarTemplateSpecializationDecl>(D)) {
4554  VTSD->setPointOfInstantiation(POI);
4555  } else if (auto *VD = dyn_cast<VarDecl>(D)) {
4556  VD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
4557  } else {
4558  auto *FD = cast<FunctionDecl>(D);
4559  if (auto *FTSInfo = FD->TemplateOrSpecialization
4560  .dyn_cast<FunctionTemplateSpecializationInfo *>())
4561  FTSInfo->setPointOfInstantiation(POI);
4562  else
4563  FD->TemplateOrSpecialization.get<MemberSpecializationInfo *>()
4564  ->setPointOfInstantiation(POI);
4565  }
4566  break;
4567  }
4568 
4570  auto *Param = cast<ParmVarDecl>(D);
4571 
4572  // We have to read the default argument regardless of whether we use it
4573  // so that hypothetical further update records aren't messed up.
4574  // TODO: Add a function to skip over the next expr record.
4575  auto *DefaultArg = Record.readExpr();
4576 
4577  // Only apply the update if the parameter still has an uninstantiated
4578  // default argument.
4579  if (Param->hasUninstantiatedDefaultArg())
4580  Param->setDefaultArg(DefaultArg);
4581  break;
4582  }
4583 
4585  auto *FD = cast<FieldDecl>(D);
4586  auto *DefaultInit = Record.readExpr();
4587 
4588  // Only apply the update if the field still has an uninstantiated
4589  // default member initializer.
4590  if (FD->hasInClassInitializer() && !FD->getInClassInitializer()) {
4591  if (DefaultInit)
4592  FD->setInClassInitializer(DefaultInit);
4593  else
4594  // Instantiation failed. We can get here if we serialized an AST for
4595  // an invalid program.
4596  FD->removeInClassInitializer();
4597  }
4598  break;
4599  }
4600 
4602  auto *FD = cast<FunctionDecl>(D);
4603  if (Reader.PendingBodies[FD]) {
4604  // FIXME: Maybe check for ODR violations.
4605  // It's safe to stop now because this update record is always last.
4606  return;
4607  }
4608 
4609  if (Record.readInt()) {
4610  // Maintain AST consistency: any later redeclarations of this function
4611  // are inline if this one is. (We might have merged another declaration
4612  // into this one.)
4613  forAllLaterRedecls(FD, [](FunctionDecl *FD) {
4614  FD->setImplicitlyInline();
4615  });
4616  }
4617  FD->setInnerLocStart(readSourceLocation());
4618  ReadFunctionDefinition(FD);
4619  assert(Record.getIdx() == Record.size() && "lazy body must be last");
4620  break;
4621  }
4622 
4624  auto *RD = cast<CXXRecordDecl>(D);
4625  auto *OldDD = RD->getCanonicalDecl()->DefinitionData;
4626  bool HadRealDefinition =
4627  OldDD && (OldDD->Definition != RD ||
4628  !Reader.PendingFakeDefinitionData.count(OldDD));
4629  RD->setParamDestroyedInCallee(Record.readInt());
4630  RD->setArgPassingRestrictions(
4631  (RecordDecl::ArgPassingKind)Record.readInt());
4632  ReadCXXRecordDefinition(RD, /*Update*/true);
4633 
4634  // Visible update is handled separately.
4635  uint64_t LexicalOffset = ReadLocalOffset();
4636  if (!HadRealDefinition && LexicalOffset) {
4637  Record.readLexicalDeclContextStorage(LexicalOffset, RD);
4638  Reader.PendingFakeDefinitionData.erase(OldDD);
4639  }
4640 
4641  auto TSK = (TemplateSpecializationKind)Record.readInt();
4642  SourceLocation POI = readSourceLocation();
4643  if (MemberSpecializationInfo *MSInfo =
4644  RD->getMemberSpecializationInfo()) {
4645  MSInfo->setTemplateSpecializationKind(TSK);
4646  MSInfo->setPointOfInstantiation(POI);
4647  } else {
4648  auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
4649  Spec->setTemplateSpecializationKind(TSK);
4650  Spec->setPointOfInstantiation(POI);
4651 
4652  if (Record.readInt()) {
4653  auto *PartialSpec =
4654  readDeclAs<ClassTemplatePartialSpecializationDecl>();
4656  Record.readTemplateArgumentList(TemplArgs);
4657  auto *TemplArgList = TemplateArgumentList::CreateCopy(
4658  Reader.getContext(), TemplArgs);
4659 
4660  // FIXME: If we already have a partial specialization set,
4661  // check that it matches.
4662  if (!Spec->getSpecializedTemplateOrPartial()
4664  Spec->setInstantiationOf(PartialSpec, TemplArgList);
4665  }
4666  }
4667 
4668  RD->setTagKind((TagTypeKind)Record.readInt());
4669  RD->setLocation(readSourceLocation());
4670  RD->setLocStart(readSourceLocation());
4671  RD->setBraceRange(readSourceRange());
4672 
4673  if (Record.readInt()) {
4674  AttrVec Attrs;
4675  Record.readAttributes(Attrs);
4676  // If the declaration already has attributes, we assume that some other
4677  // AST file already loaded them.
4678  if (!D->hasAttrs())
4679  D->setAttrsImpl(Attrs, Reader.getContext());
4680  }
4681  break;
4682  }
4683 
4685  // Set the 'operator delete' directly to avoid emitting another update
4686  // record.
4687  auto *Del = readDeclAs<FunctionDecl>();
4688  auto *First = cast<CXXDestructorDecl>(D->getCanonicalDecl());
4689  auto *ThisArg = Record.readExpr();
4690  // FIXME: Check consistency if we have an old and new operator delete.
4691  if (!First->OperatorDelete) {
4692  First->OperatorDelete = Del;
4693  First->OperatorDeleteThisArg = ThisArg;
4694  }
4695  break;
4696  }
4697 
4699  SmallVector<QualType, 8> ExceptionStorage;
4700  auto ESI = Record.readExceptionSpecInfo(ExceptionStorage);
4701 
4702  // Update this declaration's exception specification, if needed.
4703  auto *FD = cast<FunctionDecl>(D);
4704  auto *FPT = FD->getType()->castAs<FunctionProtoType>();
4705  // FIXME: If the exception specification is already present, check that it
4706  // matches.
4707  if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) {
4708  FD->setType(Reader.getContext().getFunctionType(
4709  FPT->getReturnType(), FPT->getParamTypes(),
4710  FPT->getExtProtoInfo().withExceptionSpec(ESI)));
4711 
4712  // When we get to the end of deserializing, see if there are other decls
4713  // that we need to propagate this exception specification onto.
4714  Reader.PendingExceptionSpecUpdates.insert(
4715  std::make_pair(FD->getCanonicalDecl(), FD));
4716  }
4717  break;
4718  }
4719 
4721  auto *FD = cast<FunctionDecl>(D);
4722  QualType DeducedResultType = Record.readType();
4723  Reader.PendingDeducedTypeUpdates.insert(
4724  {FD->getCanonicalDecl(), DeducedResultType});
4725  break;
4726  }
4727 
4728  case UPD_DECL_MARKED_USED:
4729  // Maintain AST consistency: any later redeclarations are used too.
4730  D->markUsed(Reader.getContext());
4731  break;
4732 
4733  case UPD_MANGLING_NUMBER:
4734  Reader.getContext().setManglingNumber(cast<NamedDecl>(D),
4735  Record.readInt());
4736  break;
4737 
4739  Reader.getContext().setStaticLocalNumber(cast<VarDecl>(D),
4740  Record.readInt());
4741  break;
4742 
4744  D->addAttr(OMPThreadPrivateDeclAttr::CreateImplicit(
4745  Reader.getContext(), readSourceRange(),
4747  break;
4748 
4750  auto AllocatorKind =
4751  static_cast<OMPAllocateDeclAttr::AllocatorTypeTy>(Record.readInt());
4752  Expr *Allocator = Record.readExpr();
4753  SourceRange SR = readSourceRange();
4754  D->addAttr(OMPAllocateDeclAttr::CreateImplicit(
4755  Reader.getContext(), AllocatorKind, Allocator, SR,
4757  break;
4758  }
4759 
4760  case UPD_DECL_EXPORTED: {
4761  unsigned SubmoduleID = readSubmoduleID();
4762  auto *Exported = cast<NamedDecl>(D);
4763  Module *Owner = SubmoduleID ? Reader.getSubmodule(SubmoduleID) : nullptr;
4764  Reader.getContext().mergeDefinitionIntoModule(Exported, Owner);
4765  Reader.PendingMergedDefinitionsToDeduplicate.insert(Exported);
4766  break;
4767  }
4768 
4770  auto MapType = Record.readEnum<OMPDeclareTargetDeclAttr::MapTypeTy>();
4771  auto DevType = Record.readEnum<OMPDeclareTargetDeclAttr::DevTypeTy>();
4772  unsigned Level = Record.readInt();
4773  D->addAttr(OMPDeclareTargetDeclAttr::CreateImplicit(
4774  Reader.getContext(), MapType, DevType, Level, readSourceRange(),
4776  break;
4777  }
4778 
4780  AttrVec Attrs;
4781  Record.readAttributes(Attrs);
4782  assert(Attrs.size() == 1);
4783  D->addAttr(Attrs[0]);
4784  break;
4785  }
4786  }
4787 }
clang::ASTDeclReader::AddLazySpecializations
static void AddLazySpecializations(T *D, SmallVectorImpl< serialization::DeclID > &IDs)
Definition: ASTReaderDecl.cpp:256
clang::serialization::DECL_CXX_METHOD
@ DECL_CXX_METHOD
A CXXMethodDecl record.
Definition: ASTBitCodes.h:1382
clang::operator!=
bool operator!=(CanQual< T > x, CanQual< U > y)
Definition: CanonicalType.h:207
clang::EnumDecl::setIntegerTypeSourceInfo
void setIntegerTypeSourceInfo(TypeSourceInfo *TInfo)
Set the underlying integer type source info.
Definition: Decl.h:3758
clang::TemplateParameterList::getRequiresClause
Expr * getRequiresClause()
The constraint-expression of the associated requires-clause.
Definition: DeclTemplate.h:174
clang::serialization::DECL_NAMESPACE
@ DECL_NAMESPACE
A NamespaceDecl record.
Definition: ASTBitCodes.h:1340
clang::TemplateDecl::getTemplatedDecl
NamedDecl * getTemplatedDecl() const
Get the underlying, templated declaration.
Definition: DeclTemplate.h:431
clang::ObjCInterfaceDecl
Represents an ObjC class declaration.
Definition: DeclObjC.h:1151
clang::ObjCMethodDecl::setHasRedeclaration
void setHasRedeclaration(bool HRD) const
Definition: DeclObjC.h:275
clang::OMPAllocateDecl
This represents '#pragma omp allocate ...' directive.
Definition: DeclOpenMP.h:473
clang::EmptyDecl
Represents an empty-declaration.
Definition: Decl.h:4574
clang::ObjCImplementationDecl::setSuperClass
void setSuperClass(ObjCInterfaceDecl *superCls)
Definition: DeclObjC.h:2685
clang::ObjCInterfaceDecl::CreateDeserialized
static ObjCInterfaceDecl * CreateDeserialized(const ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:1511
clang::serialization::DECL_OMP_DECLARE_MAPPER
@ DECL_OMP_DECLARE_MAPPER
An OMPDeclareMapperDecl record.
Definition: ASTBitCodes.h:1499
clang::ASTRecordReader::getSubmodule
Module * getSubmodule(serialization::SubmoduleID GlobalID)
Retrieve the submodule that corresponds to a global submodule ID.
Definition: ASTRecordReader.h:93
clang::ObjCCompatibleAliasDecl
ObjCCompatibleAliasDecl - Represents alias of a class.
Definition: DeclObjC.h:2721
clang::Decl::getASTContext
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:414
clang::serialization::DECL_CAPTURED
@ DECL_CAPTURED
A CapturedDecl record.
Definition: ASTBitCodes.h:1315
clang::AccessSpecDecl
Represents an access specifier followed by colon ':'.
Definition: DeclCXX.h:87
clang::RedeclarableTemplateDecl::setInstantiatedFromMemberTemplate
void setInstantiatedFromMemberTemplate(RedeclarableTemplateDecl *TD)
Definition: DeclTemplate.h:940
clang::FunctionDecl::isDefaulted
bool isDefaulted() const
Whether this function is defaulted.
Definition: Decl.h:2215
clang::serialization::DECL_USING
@ DECL_USING
A UsingDecl record.
Definition: ASTBitCodes.h:1346
clang::ASTReader::getContext
ASTContext & getContext()
Retrieve the AST context that this AST reader supplements.
Definition: ASTReader.h:2263
clang::serialization::DECL_PARM_VAR
@ DECL_PARM_VAR
A ParmVarDecl record.
Definition: ASTBitCodes.h:1300
clang::serialization::DECL_USING_SHADOW
@ DECL_USING_SHADOW
A UsingShadowDecl record.
Definition: ASTBitCodes.h:1355
clang::Decl::IDNS_Type
@ IDNS_Type
Types, declared with 'struct foo', typedefs, etc.
Definition: DeclBase.h:133
clang::ObjCMethodDecl::hasRedeclaration
bool hasRedeclaration() const
True if redeclared in the same interface.
Definition: DeclObjC.h:274
clang::NestedNameSpecifier::Identifier
@ Identifier
An identifier, stored as an IdentifierInfo*.
Definition: NestedNameSpecifier.h:81
clang::serialization::ModuleFile::ObjCCategories
SmallVector< uint64_t, 1 > ObjCCategories
The Objective-C category lists for categories known to this module.
Definition: ModuleFile.h:471
clang::RecordDecl::setHasNonTrivialToPrimitiveCopyCUnion
void setHasNonTrivialToPrimitiveCopyCUnion(bool V)
Definition: Decl.h:4002
clang::CXXConstructorDecl
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2401
clang::VarDecl::getStorageDuration
StorageDuration getStorageDuration() const
Get the storage duration of this variable, per C++ [basic.stc].
Definition: Decl.h:1146
clang::ASTDeclReader::VisitUnresolvedUsingTypenameDecl
void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D)
Definition: ASTReaderDecl.cpp:1749
clang::ASTDeclReader::VisitObjCPropertyDecl
void VisitObjCPropertyDecl(ObjCPropertyDecl *D)
Definition: ASTReaderDecl.cpp:1326
clang::ASTDeclReader::VisitObjCContainerDecl
void VisitObjCContainerDecl(ObjCContainerDecl *D)
Definition: ASTReaderDecl.cpp:1119
clang::NestedNameSpecifier::Super
@ Super
Microsoft's '__super' specifier, stored as a CXXRecordDecl* of the class it appeared in.
Definition: NestedNameSpecifier.h:101
clang::RecordDecl::setArgPassingRestrictions
void setArgPassingRestrictions(ArgPassingKind Kind)
Definition: Decl.h:4017
clang::FriendTemplateDecl
Declaration of a friend template.
Definition: DeclTemplate.h:2444
clang::Decl::setDeclContext
void setDeclContext(DeclContext *DC)
setDeclContext - Set both the semantic and lexical DeclContext to DC.
Definition: DeclBase.cpp:327
Specifiers.h
clang::FunctionProtoType::getExceptionSpecType
ExceptionSpecificationType getExceptionSpecType() const
Get the kind of exception specification on this function.
Definition: Type.h:4120
clang::RedeclarableTemplateDecl::newCommon
virtual CommonBase * newCommon(ASTContext &C) const =0
clang::RecordDecl::setHasFlexibleArrayMember
void setHasFlexibleArrayMember(bool V)
Definition: Decl.h:3917
clang::LinkageSpecDecl::setLanguage
void setLanguage(LanguageIDs L)
Set the language specified by this linkage specification.
Definition: DeclCXX.h:2831
clang::TypeSourceInfo::getType
QualType getType() const
Return the type wrapped by this type source info.
Definition: Type.h:6406
clang::AttributeCommonInfo::Kind
Kind
Definition: AttributeCommonInfo.h:52
clang::index::SymbolKind::Class
@ Class
clang::serialization::DECL_UNRESOLVED_USING_IF_EXISTS
@ DECL_UNRESOLVED_USING_IF_EXISTS
An UnresolvedUsingIfExistsDecl record.
Definition: ASTBitCodes.h:1439
clang::UsingPackDecl::CreateDeserialized
static UsingPackDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NumExpansions)
Definition: DeclCXX.cpp:3089
clang::VarTemplatePartialSpecializationDecl::CreateDeserialized
static VarTemplatePartialSpecializationDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclTemplate.cpp:1376
clang::MemberSpecializationInfo
Provides information a specialization of a member of a class template, which may be a member function...
Definition: DeclTemplate.h:619
clang::ObjCPropertyDecl::setPropertyAttributesAsWritten
void setPropertyAttributesAsWritten(ObjCPropertyAttribute::Kind PRVal)
Definition: DeclObjC.h:831
clang::ASTDeclReader::VisitEnumDecl
void VisitEnumDecl(EnumDecl *ED)
Definition: ASTReaderDecl.cpp:742
clang::serialization::DECL_EMPTY
@ DECL_EMPTY
An EmptyDecl record.
Definition: ASTBitCodes.h:1478
clang::serialization::DECL_FRIEND_TEMPLATE
@ DECL_FRIEND_TEMPLATE
A FriendTemplateDecl record.
Definition: ASTBitCodes.h:1400
clang::BlockDecl::CreateDeserialized
static BlockDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4910
clang::TypeAliasTemplateDecl::CreateDeserialized
static TypeAliasTemplateDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Create an empty alias template node.
Definition: DeclTemplate.cpp:1123
clang::FunctionDecl::TK_MemberSpecialization
@ TK_MemberSpecialization
Definition: Decl.h:1870
Error
llvm::Error Error
Definition: ByteCodeEmitter.cpp:20
clang::ObjCMethodDecl::setPropertyAccessor
void setPropertyAccessor(bool isAccessor)
Definition: DeclObjC.h:445
clang::LinkageSpecDecl
Represents a linkage specification.
Definition: DeclCXX.h:2797
clang::TagDecl::setFreeStanding
void setFreeStanding(bool isFreeStanding=true)
True if this tag is free standing, e.g. "struct foo;".
Definition: Decl.h:3471
clang::SourceRange
A trivial tuple used to represent a source range.
Definition: SourceLocation.h:212
clang::Decl::getImportedOwningModule
Module * getImportedOwningModule() const
Get the imported owning module, if this decl is from an imported (non-local) module.
Definition: DeclBase.h:743
string
string(SUBSTRING ${CMAKE_CURRENT_BINARY_DIR} 0 ${PATH_LIB_START} PATH_HEAD) string(SUBSTRING $
Definition: CMakeLists.txt:22
clang::serialization::DECL_TYPE_ALIAS_TEMPLATE
@ DECL_TYPE_ALIAS_TEMPLATE
A TypeAliasTemplateDecl record.
Definition: ASTBitCodes.h:1433
clang::DeclContext
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1347
clang::NonTypeTemplateParmDecl::hasPlaceholderTypeConstraint
bool hasPlaceholderTypeConstraint() const
Determine whether this non-type template parameter's type has a placeholder with a type-constraint.
Definition: DeclTemplate.h:1573
clang::serialization::DECL_DECOMPOSITION
@ DECL_DECOMPOSITION
A DecompositionDecl record.
Definition: ASTBitCodes.h:1303
clang::ASTDeclReader::VisitVarTemplateSpecializationDeclImpl
RedeclarableResult VisitVarTemplateSpecializationDeclImpl(VarTemplateSpecializationDecl *D)
TODO: Unify with ClassTemplateSpecializationDecl version? May require unifying ClassTemplate(Partial)...
Definition: ASTReaderDecl.cpp:2322
clang::FunctionDecl::TK_FunctionTemplate
@ TK_FunctionTemplate
Definition: Decl.h:1867
clang::LambdaCapture
Describes the capture of a variable or of this, or of a C++1y init-capture.
Definition: LambdaCapture.h:25
clang::CXXConversionDecl
Represents a C++ conversion function within a class.
Definition: DeclCXX.h:2731
clang::Decl::hasAttr
bool hasAttr() const
Definition: DeclBase.h:547
clang::ImplicitParamDecl::CreateDeserialized
static ImplicitParamDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4881
clang::Redeclarable
Provides common interface for the Decls that can be redeclared.
Definition: Redeclarable.h:84
clang::ASTDeclReader::VisitTemplateDecl
DeclID VisitTemplateDecl(TemplateDecl *D)
Definition: ASTReaderDecl.cpp:2109
clang::ASTDeclReader::VisitObjCCategoryDecl
void VisitObjCCategoryDecl(ObjCCategoryDecl *D)
Definition: ASTReaderDecl.cpp:1289
clang::NamespaceAliasDecl
Represents a C++ namespace alias.
Definition: DeclCXX.h:2986
clang::ObjCImplementationDecl
ObjCImplementationDecl - Represents a class definition - this is where method definitions are specifi...
Definition: DeclObjC.h:2546
clang::serialization::DECL_USING_PACK
@ DECL_USING_PACK
A UsingPackDecl record.
Definition: ASTBitCodes.h:1352
clang::OMPRequiresDecl::CreateDeserialized
static OMPRequiresDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned N)
Create deserialized requires node.
Definition: DeclOpenMP.cpp:92
clang::OMPDeclareMapperDecl::CreateDeserialized
static OMPDeclareMapperDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned N)
Creates deserialized declare mapper node.
Definition: DeclOpenMP.cpp:150
clang::Decl::isTemplateParameter
bool isTemplateParameter() const
isTemplateParameter - Determines whether this declaration is a template parameter.
Definition: DeclBase.h:2540
clang::serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION
@ DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION
A ClassScopeFunctionSpecializationDecl record a class scope function specialization.
Definition: ASTBitCodes.h:1463
clang::IdentifierResolver::begin
iterator begin(DeclarationName Name)
begin - Returns an iterator for decls with the name 'Name'.
Definition: IdentifierResolver.cpp:230
clang::ASTDeclReader::VisitFriendTemplateDecl
void VisitFriendTemplateDecl(FriendTemplateDecl *D)
Definition: ASTReaderDecl.cpp:2095
clang::EnumConstantDecl::setInitVal
void setInitVal(const llvm::APSInt &V)
Definition: Decl.h:3074
clang::ASTDeclReader::VisitUsingDecl
void VisitUsingDecl(UsingDecl *D)
Definition: ASTReaderDecl.cpp:1679
clang::serialization::DeclOffset
Source location and bit offset of a declaration.
Definition: ASTBitCodes.h:241
clang::serialization::ModuleFile::ObjCCategoriesMap
const serialization::ObjCCategoriesInfo * ObjCCategoriesMap
Array of category list location information within this module file, sorted by the definition ID.
Definition: ModuleFile.h:464
clang::ASTDeclReader::VisitBindingDecl
void VisitBindingDecl(BindingDecl *BD)
Definition: ASTReaderDecl.cpp:1563
clang::UsingDirectiveDecl
Represents C++ using-directive.
Definition: DeclCXX.h:2882
clang::BindingDecl
A binding in a decomposition declaration.
Definition: DeclCXX.h:3959
clang::TemplateTypeParmDecl::CreateDeserialized
static TemplateTypeParmDecl * CreateDeserialized(const ASTContext &C, unsigned ID)
Definition: DeclTemplate.cpp:643
clang::serialization::DECL_OMP_THREADPRIVATE
@ DECL_OMP_THREADPRIVATE
An OMPThreadPrivateDecl record.
Definition: ASTBitCodes.h:1469
clang::ASTDeclReader::VisitObjCProtocolDecl
void VisitObjCProtocolDecl(ObjCProtocolDecl *D)
Definition: ASTReaderDecl.cpp:1256
llvm::SmallVector< uint64_t, 64 >
clang::NestedNameSpecifier::NamespaceAlias
@ NamespaceAlias
A namespace alias, stored as a NamespaceAliasDecl*.
Definition: NestedNameSpecifier.h:87
clang::UsingDirectiveDecl::CreateDeserialized
static UsingDirectiveDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2830
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:88
clang::ASTDeclReader::VisitEnumConstantDecl
void VisitEnumConstantDecl(EnumConstantDecl *ECD)
Definition: ASTReaderDecl.cpp:850
clang::ObjCImplementationDecl::setHasNonZeroConstructors
void setHasNonZeroConstructors(bool val)
Definition: DeclObjC.h:2649
clang::Redeclarable::PreviousDeclLink
static DeclLink PreviousDeclLink(decl_type *D)
Definition: Redeclarable.h:166
clang::OMPThreadPrivateDecl
This represents '#pragma omp threadprivate ...' directive.
Definition: DeclOpenMP.h:110
clang::serialization::DECL_PRAGMA_COMMENT
@ DECL_PRAGMA_COMMENT
A PragmaCommentDecl record.
Definition: ASTBitCodes.h:1493
clang::VarDecl::ParmVarDeclBits
ParmVarDeclBitfields ParmVarDeclBits
Definition: Decl.h:1041
clang::TTK_Struct
@ TTK_Struct
The "struct" keyword.
Definition: Type.h:5310
clang::ASTRecordReader
An object for streaming information from a record.
Definition: ASTRecordReader.h:30
clang::ASTRecordReader::readAttributes
void readAttributes(AttrVec &Attrs)
Reads attributes from the current stream position, advancing Idx.
Definition: ASTReaderDecl.cpp:2854
clang::NamespaceDecl::setInline
void setInline(bool Inline)
Set whether this is an inline namespace declaration.
Definition: Decl.h:608
clang::ASTReader::RecordData
SmallVector< uint64_t, 64 > RecordData
Definition: ASTReader.h:362
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:249
clang::DeclContext::getPrimaryContext
DeclContext * getPrimaryContext()
getPrimaryContext - There may be many different declarations of the same entity (including forward de...
Definition: DeclBase.cpp:1229
clang::Decl::ModuleOwnershipKind::ModulePrivate
@ ModulePrivate
This declaration has an owning module, but is only visible to lookups that occur within that module.
clang::VarDecl::setInit
void setInit(Expr *I)
Definition: Decl.cpp:2338
clang::serialization::ModuleFile::DeclsBlockStartOffset
uint64_t DeclsBlockStartOffset
The offset to the start of the DECLTYPES_BLOCK block.
Definition: ModuleFile.h:434
clang::UsingDecl::setTypename
void setTypename(bool TN)
Sets whether the using declaration has 'typename'.
Definition: DeclCXX.h:3431
clang::BlockDecl::setSignatureAsWritten
void setSignatureAsWritten(TypeSourceInfo *Sig)
Definition: Decl.h:4235
IdentifierResolver.h
clang::serialization::ModuleFile::Generation
unsigned Generation
The generation of which this module file is a part.
Definition: ModuleFile.h:185
clang::OMPThreadPrivateDecl::CreateDeserialized
static OMPThreadPrivateDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned N)
Definition: DeclOpenMP.cpp:38
clang::RecordDecl::setHasVolatileMember
void setHasVolatileMember(bool val)
Definition: Decl.h:3945
clang::TemplateTypeParmDecl::setDefaultArgument
void setDefaultArgument(TypeSourceInfo *DefArg)
Set the default argument for this template parameter.
Definition: DeclTemplate.h:1271
clang::ConceptReference::getNamedConcept
ConceptDecl * getNamedConcept() const
Definition: ASTConcept.h:154
clang::ObjCPropertyDecl::setSetterMethodDecl
void setSetterMethodDecl(ObjCMethodDecl *gDecl)
Definition: DeclObjC.h:905
getDeclForMerging
static NamedDecl * getDeclForMerging(NamedDecl *Found, bool IsTypedefNameForLinkage)
Find the declaration that should be merged into, given the declaration found by name lookup.
Definition: ASTReaderDecl.cpp:3404
clang::OMPTraitInfo
Helper data structure representing the traits in a match clause of an declare variant or metadirectiv...
Definition: OpenMPClause.h:8490
clang::QualType
A (possibly-)qualified type.
Definition: Type.h:673
clang::ASTRecordReader::GetLocalDeclAs
T * GetLocalDeclAs(uint32_t LocalID)
Reads a declaration with the given local ID in the given module.
Definition: ASTRecordReader.h:144
clang::NonTypeTemplateParmDecl
NonTypeTemplateParmDecl - Declares a non-type template parameter, e.g., "Size" in.
Definition: DeclTemplate.h:1384
clang::OMPDeclareReductionDecl::CreateDeserialized
static OMPDeclareReductionDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Create deserialized declare reduction node.
Definition: DeclOpenMP.cpp:120
Attr.h
AttributeLangSupport::C
@ C
Definition: SemaDeclAttr.cpp:54
clang::NestedNameSpecifier
Represents a C++ nested name specifier, such as "\::std::vector<int>::".
Definition: NestedNameSpecifier.h:50
clang::ASTDeclReader::VisitEmptyDecl
void VisitEmptyDecl(EmptyDecl *D)
Definition: ASTReaderDecl.cpp:2476
clang::VarDecl::NonParmVarDeclBits
NonParmVarDeclBitfields NonParmVarDeclBits
Definition: Decl.h:1042
Cursor
Cursor
Definition: SerializedDiagnosticReader.cpp:109
clang::serialization::DECL_USING_ENUM
@ DECL_USING_ENUM
A UsingEnumDecl record.
Definition: ASTBitCodes.h:1349
clang::ClassScopeFunctionSpecializationDecl
Declaration of a function specialization at template class scope.
Definition: DeclTemplate.h:2604
clang::TemplateTemplateParmDecl::setDefaultArgument
void setDefaultArgument(const ASTContext &C, const TemplateArgumentLoc &DefArg)
Set the default argument for this template parameter, and whether that default argument was inherited...
Definition: DeclTemplate.cpp:852
clang::FieldDecl
Represents a member of a struct/union/class.
Definition: Decl.h:2835
clang::TagDecl::setBraceRange
void setBraceRange(SourceRange R)
Definition: Decl.h:3410
clang::LookupResult
Represents the results of name lookup.
Definition: Lookup.h:46
clang::serialization::UPD_CXX_POINT_OF_INSTANTIATION
@ UPD_CXX_POINT_OF_INSTANTIATION
Definition: ASTCommon.h:30
clang::ExportDecl::CreateDeserialized
static ExportDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:5172
clang::ASTDeclReader::VisitObjCAtDefsFieldDecl
void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D)
Definition: ASTReaderDecl.cpp:1285
clang::DeclListNode::iterator
Definition: DeclBase.h:1244
clang::isUnresolvedExceptionSpec
bool isUnresolvedExceptionSpec(ExceptionSpecificationType ESpecType)
Definition: ExceptionSpecificationType.h:49
clang::ParmVarDecl
Represents a parameter to a function.
Definition: Decl.h:1665
clang::NamespaceAliasDecl::CreateDeserialized
static NamespaceAliasDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2926
clang::Redeclarable::getFirstDecl
decl_type * getFirstDecl()
Return the first declaration of this declaration or itself if this is the only declaration.
Definition: Redeclarable.h:216
clang::ObjCProtocolDecl::getCanonicalDecl
ObjCProtocolDecl * getCanonicalDecl() override
Retrieves the canonical declaration of this Objective-C protocol.
Definition: DeclObjC.h:2244
clang::ASTRecordReader::getGlobalBitOffset
uint64_t getGlobalBitOffset(uint64_t LocalOffset)
Read information about an exception specification (inherited).
Definition: ASTRecordReader.h:123
DeclCXX.h
memcpy
__DEVICE__ void * memcpy(void *__a, const void *__b, size_t __c)
Definition: __clang_cuda_device_functions.h:1549
clang::TagDecl::getCanonicalDecl
TagDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: Decl.cpp:4308
clang::ASTContext::getFunctionType
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:1522
clang::EnumDecl::getODRHash
unsigned getODRHash()
Definition: Decl.cpp:4516
clang::Type::getContainedDeducedType
DeducedType * getContainedDeducedType() const
Get the DeducedType whose type will be deduced for a variable with an initializer of this type.
Definition: Type.cpp:1889
clang::CXXMethodDecl::getCanonicalDecl
CXXMethodDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:2033
clang::ParmVarDecl::CreateDeserialized
static ParmVarDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:2770
clang::serialization::DECL_CONSTRUCTOR_USING_SHADOW
@ DECL_CONSTRUCTOR_USING_SHADOW
A ConstructorUsingShadowDecl record.
Definition: ASTBitCodes.h:1358
Module.h
clang::FunctionDecl::TK_FunctionTemplateSpecialization
@ TK_FunctionTemplateSpecialization
Definition: Decl.h:1874
AttrIterator.h
clang::IdentifierInfo::isOutOfDate
bool isOutOfDate() const
Determine whether the information for this identifier is out of date with respect to the external sou...
Definition: IdentifierTable.h:414
clang::ASTRecordReader::readSourceLocation
SourceLocation readSourceLocation()
Read a source location, advancing Idx.
Definition: ASTRecordReader.h:274
clang::serialization::UPD_CXX_RESOLVED_EXCEPTION_SPEC
@ UPD_CXX_RESOLVED_EXCEPTION_SPEC
Definition: ASTCommon.h:35
clang::UsingShadowDecl
Represents a shadow declaration implicitly introduced into a scope by a (resolved) using-declaration ...
Definition: DeclCXX.h:3187
clang::serialization::UPD_DECL_MARKED_OPENMP_DECLARETARGET
@ UPD_DECL_MARKED_OPENMP_DECLARETARGET
Definition: ASTCommon.h:42
DeclOpenMP.h
clang::Decl::isTemplateParameterPack
bool isTemplateParameterPack() const
isTemplateParameter - Determines whether this declaration is a template parameter pack.
Definition: DeclBase.cpp:201
clang::ASTDeclReader::VisitTemplateTemplateParmDecl
void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D)
Definition: ASTReaderDecl.cpp:2445
clang::Decl::setTopLevelDeclInObjCContainer
void setTopLevelDeclInObjCContainer(bool V=true)
Definition: DeclBase.h:602
clang::serialization::UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT
@ UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT
Definition: ASTCommon.h:32
clang::TemplateTemplateParmDecl::setDepth
void setDepth(unsigned D)
Definition: DeclTemplate.h:1162
clang::ASTDeclReader::mergeMergeable
void mergeMergeable(Mergeable< T > *D)
Attempts to merge the given declaration (D) with another declaration of the same entity,...
Definition: ASTReaderDecl.cpp:2712
clang::Module::ModuleMapModule
@ ModuleMapModule
This is a module that was defined by a module map and built out of header files.
Definition: Module.h:107
clang::ASTDeclReader::VisitTypeAliasTemplateDecl
void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D)
Definition: ASTReaderDecl.cpp:2464
clang::ObjCPropertyImplDecl
ObjCPropertyImplDecl - Represents implementation declaration of a property in a class or category imp...
Definition: DeclObjC.h:2751
clang::ASTRecordReader::readOMPTraitInfo
OMPTraitInfo * readOMPTraitInfo()
Read an OMPTraitInfo object, advancing Idx.
Definition: ASTReader.cpp:12963
clang::ASTDeclReader::VisitNamedDecl
void VisitNamedDecl(NamedDecl *ND)
Definition: ASTReaderDecl.cpp:662
clang::serialization::UPD_STATIC_LOCAL_NUMBER
@ UPD_STATIC_LOCAL_NUMBER
Definition: ASTCommon.h:39
assert_cast
static T assert_cast(T t)
"Cast" to type T, asserting if we don't have an implicit conversion.
Definition: ASTReaderDecl.cpp:2587
clang::serialization::DECL_IMPLICIT_PARAM
@ DECL_IMPLICIT_PARAM
An ImplicitParamDecl record.
Definition: ASTBitCodes.h:1297
llvm::Optional
Definition: LLVM.h:40
clang::ObjCCategoryDecl::IsClassExtension
bool IsClassExtension() const
Definition: DeclObjC.h:2384
clang::ASTRecordReader::readDeclID
serialization::DeclID readDeclID()
Reads a declaration ID from the given position in this record.
Definition: ASTRecordReader.h:186
clang::UnresolvedUsingValueDecl::CreateDeserialized
static UnresolvedUsingValueDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:3114
clang::ComparisonCategoryType::First
@ First
clang::ObjCImplementationDecl::setHasDestructors
void setHasDestructors(bool val)
Definition: DeclObjC.h:2654
clang::RedeclarableTemplateDecl::setMemberSpecialization
void setMemberSpecialization()
Note that this member template is a specialization.
Definition: DeclTemplate.h:894
ASTRecordReader.h
clang::OMPAllocateDecl::CreateDeserialized
static OMPAllocateDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NVars, unsigned NClauses)
Definition: DeclOpenMP.cpp:66
clang::ASTDeclReader::VisitImportDecl
void VisitImportDecl(ImportDecl *D)
Definition: ASTReaderDecl.cpp:2066
clang::serialization::DECL_UNRESOLVED_USING_TYPENAME
@ DECL_UNRESOLVED_USING_TYPENAME
An UnresolvedUsingTypenameDecl record.
Definition: ASTBitCodes.h:1367
clang::ASTRecordReader::readVersionTuple
VersionTuple readVersionTuple()
Read a version tuple, advancing Idx.
Definition: ASTRecordReader.h:319
clang::FunctionDecl::setInlineSpecified
void setInlineSpecified(bool I)
Set whether the "inline" keyword was specified for this function.
Definition: Decl.h:2594
clang::ASTDeclReader::Visit
void Visit(Decl *D)
Definition: ASTReaderDecl.cpp:527
clang::FunctionDecl::setDefaulted
void setDefaulted(bool D=true)
Definition: Decl.h:2216
clang::ASTDeclReader::VisitClassTemplateDecl
void VisitClassTemplateDecl(ClassTemplateDecl *D)
Definition: ASTReaderDecl.cpp:2167
clang::ObjCPropertyDecl::setPropertyAttributes
void setPropertyAttributes(ObjCPropertyAttribute::Kind PRVal)
Definition: DeclObjC.h:819
clang::ASTDeclReader::getMostRecentDeclImpl
static Decl * getMostRecentDeclImpl(Redeclarable< DeclT > *D)
Definition: ASTReaderDecl.cpp:3584
clang::serialization::ModuleFile::BaseDeclID
serialization::DeclID BaseDeclID
Base declaration ID for declarations local to this module.
Definition: ModuleFile.h:444
clang::ASTRecordReader::readIdentifier
IdentifierInfo * readIdentifier()
Definition: ASTRecordReader.h:209
clang::serialization::ModuleFile::GlobalBitOffset
uint64_t GlobalBitOffset
The global bit offset (or base) of this module.
Definition: ModuleFile.h:195
clang::ASTDeclReader::VisitObjCCompatibleAliasDecl
void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D)
Definition: ASTReaderDecl.cpp:1321
clang::serialization::DECL_CLASS_TEMPLATE
@ DECL_CLASS_TEMPLATE
A ClassTemplateDecl record.
Definition: ASTBitCodes.h:1403
clang::serialization::DECL_OBJC_PROPERTY_IMPL
@ DECL_OBJC_PROPERTY_IMPL
A ObjCPropertyImplDecl record.
Definition: ASTBitCodes.h:1279
clang::tooling::X
static ToolExecutorPluginRegistry::Add< AllTUsToolExecutorPlugin > X("all-TUs", "Runs FrontendActions on all TUs in the compilation database. " "Tool results are stored in memory.")
clang::ObjCCompatibleAliasDecl::CreateDeserialized
static ObjCCompatibleAliasDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:2268
clang::NonTypeTemplateParmDecl::setPosition
void setPosition(unsigned P)
Definition: DeclTemplate.h:1166
llvm::Expected
Definition: LLVM.h:41
clang::BlockDecl::setDoesNotEscape
void setDoesNotEscape(bool B=true)
Definition: Decl.h:4305
clang::ClassTemplatePartialSpecializationDecl
Definition: DeclTemplate.h:2075
clang::UsingPackDecl
Represents a pack of using declarations that a single using-declarator pack-expanded into.
Definition: DeclCXX.h:3644
clang::TypedefNameDecl::setModedTypeSourceInfo
void setModedTypeSourceInfo(TypeSourceInfo *unmodedTSI, QualType modedTy)
Definition: Decl.h:3246
clang::ASTDeclReader::VisitVarTemplatePartialSpecializationDecl
void VisitVarTemplatePartialSpecializationDecl(VarTemplatePartialSpecializationDecl *D)
TODO: Unify with ClassTemplatePartialSpecializationDecl version? May require unifying ClassTemplate(P...
Definition: ASTReaderDecl.cpp:2384
ContinuousRangeMap.h
clang::ObjCCategoryDecl::setIvarLBraceLoc
void setIvarLBraceLoc(SourceLocation Loc)
Definition: DeclObjC.h:2410
clang::sema::Capture
Definition: ScopeInfo.h:529
clang::ExportDecl
Represents a C++ Modules TS module export declaration.
Definition: Decl.h:4527
clang::RedeclarableTemplateDecl
Declaration of a redeclarable template.
Definition: DeclTemplate.h:752
clang::MSGuidDeclParts::Part1
uint32_t Part1
{01234567-...
Definition: DeclCXX.h:4118
clang::serialization::DECL_REQUIRES_EXPR_BODY
@ DECL_REQUIRES_EXPR_BODY
A RequiresExprBodyDecl record.
Definition: ASTBitCodes.h:1484
clang::FunctionDecl::setDeletedAsWritten
void setDeletedAsWritten(bool D=true)
Definition: Decl.h:2346
clang::TypeDecl::setLocStart
void setLocStart(SourceLocation L)
Definition: Decl.h:3166
clang::FunctionDecl::setStorageClass
void setStorageClass(StorageClass SClass)
Sets the storage class as written in the source.
Definition: Decl.h:2585
clang::LifetimeExtendedTemporaryDecl::getManglingNumber
unsigned getManglingNumber() const
Definition: DeclCXX.h:3145
clang::FunctionType
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3546
clang::FunctionDecl::setLateTemplateParsed
void setLateTemplateParsed(bool ILT=true)
State that this templated function will be late parsed.
Definition: Decl.h:2199
clang::VarTemplateSpecializationDecl
Represents a variable template specialization, which refers to a variable template with a given set o...
Definition: DeclTemplate.h:2664
clang::UsingDecl::setUsingLoc
void setUsingLoc(SourceLocation L)
Set the source location of the 'using' keyword.
Definition: DeclCXX.h:3409
clang::CapturedDecl
Represents the body of a CapturedStmt, and serves as its DeclContext.
Definition: Decl.h:4342
clang::serialization::DECL_FIELD
@ DECL_FIELD
A FieldDecl record.
Definition: ASTBitCodes.h:1282
clang::serialization::DECL_TYPEALIAS
@ DECL_TYPEALIAS
A TypeAliasDecl record.
Definition: ASTBitCodes.h:1234
clang::FunctionDecl::getMemberSpecializationInfo
MemberSpecializationInfo * getMemberSpecializationInfo() const
If this function is an instantiation of a member function of a class template specialization,...
Definition: Decl.cpp:3690
clang::TTK_Interface
@ TTK_Interface
The "__interface" keyword.
Definition: Type.h:5313
clang::DeclarationName
The name of a declaration.
Definition: DeclarationName.h:145
clang::serialization::isPartOfPerModuleInitializer
bool isPartOfPerModuleInitializer(const Decl *D)
Determine whether the given declaration will be included in the per-module initializer if it needs to...
Definition: ASTCommon.h:116
clang::AttributeCommonInfo::Syntax
Syntax
The style used to specify an attribute.
Definition: AttributeCommonInfo.h:25
clang::serialization::UPD_CXX_ADDED_VAR_DEFINITION
@ UPD_CXX_ADDED_VAR_DEFINITION
Definition: ASTCommon.h:29
clang::ASTContext::getTranslationUnitDecl
TranslationUnitDecl * getTranslationUnitDecl() const
Definition: ASTContext.h:1057
clang::ASTDeclReader::VisitOMPAllocateDecl
void VisitOMPAllocateDecl(OMPAllocateDecl *D)
Definition: ASTReaderDecl.cpp:2736
clang::ASTDeclReader::attachLatestDeclImpl
static void attachLatestDeclImpl(Redeclarable< DeclT > *D, Decl *Latest)
Definition: ASTReaderDecl.cpp:3789
clang::ClassTemplateDecl::CreateDeserialized
static ClassTemplateDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Create an empty class template node.
Definition: DeclTemplate.cpp:460
clang::serialization::DECL_RECORD
@ DECL_RECORD
A RecordDecl record.
Definition: ASTBitCodes.h:1240
clang::serialization::DECL_OBJC_INTERFACE
@ DECL_OBJC_INTERFACE
A ObjCInterfaceDecl record.
Definition: ASTBitCodes.h:1252
clang::serialization::DECL_FUNCTION_TEMPLATE
@ DECL_FUNCTION_TEMPLATE
A FunctionTemplateDecl record.
Definition: ASTBitCodes.h:1421
clang::DeclContextLookupResult::begin
iterator begin()
Definition: DeclBase.h:1306
clang::Decl::markUsed
void markUsed(ASTContext &C)
Mark the declaration used, in the sense of odr-use.
Definition: DeclBase.cpp:458
clang::ASTDeclReader::VisitValueDecl
void VisitValueDecl(ValueDecl *VD)
Definition: ASTReaderDecl.cpp:839
clang::FriendDecl::CreateDeserialized
static FriendDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned FriendTypeNumTPLists)
Definition: DeclFriend.cpp:65
clang::EnumDecl::setIntegerType
void setIntegerType(QualType T)
Set the underlying integer type.
Definition: Decl.h:3755
clang::ASTDeclReader::VisitTypedefNameDecl
RedeclarableResult VisitTypedefNameDecl(TypedefNameDecl *TD)
Definition: ASTReaderDecl.cpp:676
clang::RecordDecl::setHasNonTrivialToPrimitiveDefaultInitializeCUnion
void setHasNonTrivialToPrimitiveDefaultInitializeCUnion(bool V)
Definition: Decl.h:3986
clang::serialization::DeclUpdateKind
DeclUpdateKind
Definition: ASTCommon.h:24
clang::ASTDeclReader::VisitClassTemplateSpecializationDecl
void VisitClassTemplateSpecializationDecl(ClassTemplateSpecializationDecl *D)
Definition: ASTReaderDecl.cpp:341
clang::EnumDecl
Represents an enum.
Definition: Decl.h:3590
clang::ASTDeclReader::VisitObjCImplDecl
void VisitObjCImplDecl(ObjCImplDecl *D)
Definition: ASTReaderDecl.cpp:1349
clang::serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION
@ DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION
A ClassTemplatePartialSpecializationDecl record.
Definition: ASTBitCodes.h:1409
clang::TemplateTypeParmDecl::setTypeConstraint
void setTypeConstraint(NestedNameSpecifierLoc NNS, DeclarationNameInfo NameInfo, NamedDecl *FoundDecl, ConceptDecl *CD, const ASTTemplateArgumentListInfo *ArgsAsWritten, Expr *ImmediatelyDeclaredConstraint)
Definition: DeclTemplate.cpp:688
clang::TemplateDecl::init
void init(NamedDecl *templatedDecl, TemplateParameterList *templateParams)
Initialize the underlying templated declaration and template parameters.
Definition: DeclTemplate.h:456
clang::ObjCIvarDecl::AccessControl
AccessControl
Definition: DeclObjC.h:1928
Decl.h
clang::TypeAliasDecl::CreateDeserialized
static TypeAliasDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:5042
DeclObjC.h
Offset
unsigned Offset
Definition: Format.cpp:2335
clang::ASTDeclReader::VisitDecl
void VisitDecl(Decl *D)
Definition: ASTReaderDecl.cpp:562
clang::serialization::DECL_CXX_RECORD
@ DECL_CXX_RECORD
A CXXRecordDecl record.
Definition: ASTBitCodes.h:1376
clang::InheritableAttr
Definition: Attr.h:142
clang::IdentifierResolver::tryAddTopLevelDecl
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't alre...
Definition: IdentifierResolver.cpp:302
clang::RecordDecl::setHasObjectMember
void setHasObjectMember(bool val)
Definition: Decl.h:3941
clang::serialization::needsAnonymousDeclarationNumber
bool needsAnonymousDeclarationNumber(const NamedDecl *D)
Determine whether the given declaration needs an anonymous declaration number.
Definition: ASTCommon.cpp:448
forAllLaterRedecls
static void forAllLaterRedecls(DeclT *D, Fn F)
Definition: ASTReaderDecl.cpp:4479
clang::serialization::DECL_CXX_BASE_SPECIFIERS
@ DECL_CXX_BASE_SPECIFIERS
A record containing CXXBaseSpecifiers.
Definition: ASTBitCodes.h:1445
clang::PragmaDetectMismatchDecl::CreateDeserialized
static PragmaDetectMismatchDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned NameValueSize)
Definition: Decl.cpp:4820
clang::ASTDeclReader::VisitCXXDeductionGuideDecl
void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *GD)
Definition: ASTReaderDecl.cpp:2008
clang::CXXConstructorDecl::CreateDeserialized
static CXXConstructorDecl * CreateDeserialized(ASTContext &C, unsigned ID, uint64_t AllocKind)
Definition: DeclCXX.cpp:2583
clang::TagDecl::setTagKind
void setTagKind(TagKind TK)
Definition: Decl.h:3511
clang::UnresolvedUsingTypenameDecl
Represents a dependent using declaration which was marked with typename.
Definition: DeclCXX.h:3809
clang::ParmVarDecl::setScopeInfo
void setScopeInfo(unsigned scopeDepth, unsigned parameterIndex)
Definition: Decl.h:1698
clang::Decl::getLexicalDeclContext
DeclContext * getLexicalDeclContext()
getLexicalDeclContext - The declaration context where this Decl was lexically declared (LexicalDC).
Definition: DeclBase.h:843
clang::FunctionTemplateDecl
Declaration of a template function.
Definition: DeclTemplate.h:978
clang::serialization::DECL_FILE_SCOPE_ASM
@ DECL_FILE_SCOPE_ASM
A FileScopeAsmDecl record.
Definition: ASTBitCodes.h:1309
clang::serialization::DECL_OBJC_COMPATIBLE_ALIAS
@ DECL_OBJC_COMPATIBLE_ALIAS
A ObjCCompatibleAliasDecl record.
Definition: ASTBitCodes.h:1273
clang::FunctionDecl::setConstexprKind
void setConstexprKind(ConstexprSpecKind CSK)
Definition: Decl.h:2286
TemplateBase.h
clang::UnresolvedUsingTypenameDecl::CreateDeserialized
static UnresolvedUsingTypenameDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:3144
V
#define V(N, I)
Definition: ASTContext.h:3121
clang::ASTContext::getExternalSource
ExternalASTSource * getExternalSource() const
Retrieve a pointer to the external AST source associated with this AST context, if any.
Definition: ASTContext.h:1158
clang::serialization::SubmoduleID
uint32_t SubmoduleID
An ID number that refers to a submodule in a module file.
Definition: ASTBitCodes.h:171
clang::ObjCInterfaceDecl::mergeClassExtensionProtocolList
void mergeClassExtensionProtocolList(ObjCProtocolDecl *const *List, unsigned Num, ASTContext &C)
mergeClassExtensionProtocolList - Merge class extension's protocol list into the protocol list for th...
Definition: DeclObjC.cpp:434
clang::interp::Compare
ComparisonCategoryResult Compare(const T &X, const T &Y)
Helper to compare two comparable types.
Definition: Integral.h:32
clang::ASTReader::GetLocalDecl
Decl * GetLocalDecl(ModuleFile &F, uint32_t LocalID)
Reads a declaration with the given local ID in the given module.
Definition: ASTReader.h:1850
clang::TranslationUnitDecl
The top declaration context.
Definition: Decl.h:82
clang::ASTDeclReader::VisitOMPThreadPrivateDecl
void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D)
Definition: ASTReaderDecl.cpp:2731
clang::NestedNameSpecifier::Namespace
@ Namespace
A namespace, stored as a NamespaceDecl*.
Definition: NestedNameSpecifier.h:84
clang::ConceptReference::getTemplateArgsAsWritten
const ASTTemplateArgumentListInfo * getTemplateArgsAsWritten() const
Definition: ASTConcept.h:158
clang::ObjCMethodDecl::setSelfDecl
void setSelfDecl(ImplicitParamDecl *SD)
Definition: DeclObjC.h:424
clang::InheritableAttr::setInherited
void setInherited(bool I)
Definition: Attr.h:152
clang::TemplateArgumentList::CreateCopy
static TemplateArgumentList * CreateCopy(ASTContext &Context, ArrayRef< TemplateArgument > Args)
Create a new template argument list that copies the given set of template arguments.
Definition: DeclTemplate.cpp:871
clang::NestedNameSpecifier::getAsIdentifier
IdentifierInfo * getAsIdentifier() const
Retrieve the identifier stored in this nested name specifier.
Definition: NestedNameSpecifier.h:176
clang::ASTDeclReader::VisitExportDecl
void VisitExportDecl(ExportDecl *D)
Definition: ASTReaderDecl.cpp:1627
clang::serialization::DECL_TEMPLATE_TEMPLATE_PARM
@ DECL_TEMPLATE_TEMPLATE_PARM
A TemplateTemplateParmDecl record.
Definition: ASTBitCodes.h:1430
clang::DeclarationName::getObjCSelector
Selector getObjCSelector() const
Get the Objective-C selector stored in this declaration name.
Definition: DeclarationName.h:481
clang::ASTRecordReader::readTypeSourceInfo
TypeSourceInfo * readTypeSourceInfo()
Reads a declarator info from the given record, advancing Idx.
Definition: ASTReader.cpp:6790
clang::ObjCPropertyImplDecl::setGetterCXXConstructor
void setGetterCXXConstructor(Expr *getterCXXConstructor)
Definition: DeclObjC.h:2856
clang::ASTDeclReader::markIncompleteDeclChainImpl
static void markIncompleteDeclChainImpl(Redeclarable< DeclT > *D)
Definition: ASTReaderDecl.cpp:3811
clang::Module
Describes a module or submodule.
Definition: Module.h:96
clang::TemplateParameterList::getParam
NamedDecl * getParam(unsigned Idx)
Definition: DeclTemplate.h:138
DeclTemplate.h
clang::serialization::ModuleFile::DeclsCursor
llvm::BitstreamCursor DeclsCursor
DeclsCursor - This is a cursor to the start of the DECLTYPES_BLOCK block.
Definition: ModuleFile.h:431
clang::ASTDeclReader::VisitBuiltinTemplateDecl
void VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D)
Definition: ASTReaderDecl.cpp:2187
clang::NoLinkage
@ NoLinkage
No linkage, which means that the entity is unique and can only be referred to from within its scope.
Definition: Linkage.h:26
clang::NamespaceDecl::CreateDeserialized
static NamespaceDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2864
clang::FunctionDecl::CreateDeserialized
static FunctionDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: Decl.cpp:4900
clang::ASTDeclReader::VisitOMPDeclareReductionDecl
void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D)
Definition: ASTReaderDecl.cpp:2746
clang::VarDecl::ensureEvaluatedStmt
EvaluatedStmt * ensureEvaluatedStmt() const
Convert the initializer for this declaration to the elaborated EvaluatedStmt form,...
Definition: Decl.cpp:2412
clang::Decl::IdentifierNamespace
IdentifierNamespace
IdentifierNamespace - The different namespaces in which declarations may appear.
Definition: DeclBase.h:118
clang::FunctionTemplateSpecializationInfo::Profile
void Profile(llvm::FoldingSetNodeID &ID)
Definition: DeclTemplate.h:603
clang::OMPDeclareReductionDecl
This represents '#pragma omp declare reduction ...' directive.
Definition: DeclOpenMP.h:171
clang::RequiresExprBodyDecl
Represents the body of a requires-expression.
Definition: DeclCXX.h:1926
clang::TemplateArgumentListInfo
A convenient class for passing around template argument information.
Definition: TemplateBase.h:564
clang::serialization::NUM_PREDEF_DECL_IDS
const unsigned int NUM_PREDEF_DECL_IDS
The number of declaration IDs that are predefined.
Definition: ASTBitCodes.h:1213
clang::ObjCPropertyDecl::setPropertyImplementation
void setPropertyImplementation(PropertyControl pc)
Definition: DeclObjC.h:908
clang::Linkage
Linkage
Describes the different kinds of linkage (C++ [basic.link], C99 6.2.2) that an entity may have.
Definition: Linkage.h:23
clang::ImportDecl
Describes a module import declaration, which makes the contents of the named module visible in the cu...
Definition: Decl.h:4447
clang::DeclAccessPair::make
static DeclAccessPair make(NamedDecl *D, AccessSpecifier AS)
Definition: DeclAccessPair.h:35
clang::TagTypeKind
TagTypeKind
The kind of a tag type.
Definition: Type.h:5308
DeclFriend.h
clang::Decl::specific_attrs
llvm::iterator_range< specific_attr_iterator< T > > specific_attrs() const
Definition: DeclBase.h:529
clang::BlockDecl
Represents a block literal declaration, which is like an unnamed FunctionDecl.
Definition: Decl.h:4153
clang::serialization::UPD_DECL_EXPORTED
@ UPD_DECL_EXPORTED
Definition: ASTCommon.h:43
clang::serialization::UPD_ADDED_ATTR_TO_RECORD
@ UPD_ADDED_ATTR_TO_RECORD
Definition: ASTCommon.h:44
clang::Decl::getKind
Kind getKind() const
Definition: DeclBase.h:433
clang::ASTDeclReader::VisitMSPropertyDecl
void VisitMSPropertyDecl(MSPropertyDecl *FD)
Definition: ASTReaderDecl.cpp:1405
clang::Decl::ModuleOwnershipKind::VisibleWhenImported
@ VisibleWhenImported
This declaration has an owning module, and is visible when that module is imported.
clang::PragmaCommentDecl::CreateDeserialized
static PragmaCommentDecl * CreateDeserialized(ASTContext &C, unsigned ID, unsigned ArgSize)
Definition: Decl.cpp:4794
clang::Decl::setAccess
void setAccess(AccessSpecifier AS)
Definition: DeclBase.h:473
clang::NonTypeTemplateParmDecl::getNumExpansionTypes
unsigned getNumExpansionTypes() const
Retrieves the number of expansion types in an expanded parameter pack.
Definition: DeclTemplate.h:1537
ExceptionSpecificationType.h
clang::ObjCMethodDecl::setReturnType
void setReturnType(QualType T)
Definition: DeclObjC.h:333
ASTCommon.h
DeclBase.h
clang::TemplateArgumentListInfo::addArgument
void addArgument(const TemplateArgumentLoc &Loc)
Definition: TemplateBase.h:604
clang::ObjCCategoryImplDecl::CreateDeserialized
static ObjCCategoryImplDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:2117
clang::ConceptDecl
Declaration of a C++2a concept.
Definition: DeclTemplate.h:3235
clang::ASTDeclReader::VisitBlockDecl
void VisitBlockDecl(BlockDecl *BD)
Definition: ASTReaderDecl.cpp:1574
clang::serialization::DECL_VAR_TEMPLATE_SPECIALIZATION
@ DECL_VAR_TEMPLATE_SPECIALIZATION
A VarTemplateSpecializationDecl record.
Definition: ASTBitCodes.h:1415
clang::ASTDeclReader::VisitPragmaDetectMismatchDecl
void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D)
Definition: ASTReaderDecl.cpp:644
clang::serialization::DECL_CXX_DEDUCTION_GUIDE
@ DECL_CXX_DEDUCTION_GUIDE
A CXXDeductionGuideDecl record.
Definition: ASTBitCodes.h:1379
clang::Decl::setModuleOwnershipKind
void setModuleOwnershipKind(ModuleOwnershipKind MOK)
Set whether this declaration is hidden from name lookup.
Definition: DeclBase.h:806
clang::OMPDeclareReductionDecl::setInitializer
void setInitializer(Expr *E, InitKind IK)
Set initializer expression for the declare reduction construct.
Definition: DeclOpenMP.h:252
clang::UsingDecl::CreateDeserialized
static UsingDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:3051
clang::NonTypeTemplateParmDecl::CreateDeserialized
static NonTypeTemplateParmDecl * CreateDeserialized(ASTContext &C, unsigned ID, bool HasTypeConstraint)
Definition: DeclTemplate.cpp:754
clang::Decl::ObjCDeclQualifier
ObjCDeclQualifier
ObjCDeclQualifier - 'Qualifiers' written next to the return and parameter types in method declaration...
Definition: DeclBase.h:201
clang::VarDecl::VarDeclBits
VarDeclBitfields VarDeclBits
Definition: Decl.h:1040
clang::threadSafety::sx::toString
std::string toString(const til::SExpr *E)
Definition: ThreadSafetyCommon.h:89
clang::serialization::DECL_CXX_DESTRUCTOR
@ DECL_CXX_DESTRUCTOR
A CXXDestructorDecl record.
Definition: ASTBitCodes.h:1388
clang::FunctionTemplateDecl::Common
Data that is common to all of the declarations of a given function template.
Definition: DeclTemplate.h:984
clang::SC_Extern
@ SC_Extern
Definition: Specifiers.h:236
Redeclarable.h
clang::DeclContext::setHasExternalVisibleStorage
void setHasExternalVisibleStorage(bool ES=true) const
State whether this DeclContext has external storage for declarations visible in this context.
Definition: DeclBase.h:2448
clang::EvaluatedStmt::HasConstantInitialization
bool HasConstantInitialization
Whether this variable is known to have constant initialization.
Definition: Decl.h:852
clang::ASTContext
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:212
clang::BlockDecl::setBody
void setBody(CompoundStmt *B)
Definition: Decl.h:4233
clang::ASTDeclReader::VisitUsingEnumDecl
void VisitUsingEnumDecl(UsingEnumDecl *D)
Definition: ASTReaderDecl.cpp:1691
clang::ArrayType
Represents an array type, per C99 6.7.5.2 - Array Declarators.
Definition: Type.h:2883
clang::ObjCMethodDecl::setDeclImplementation
void setDeclImplementation(ImplementationControl ic)
Definition: DeclObjC.h:501
clang::ConstructorUsingShadowDecl::CreateDeserialized
static ConstructorUsingShadowDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:3003
clang::ASTDeclReader::VisitUsingDirectiveDecl
void VisitUsingDirectiveDecl(UsingDirectiveDecl *D)
Definition: ASTReaderDecl.cpp:1731
NestedNameSpecifier.h
LangOptions.h
clang::ClassTemplateSpecializationDecl::CreateDeserialized
static ClassTemplateSpecializationDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclTemplate.cpp:936
clang::CapturedDecl::setNothrow
void setNothrow(bool Nothrow=true)
Definition: Decl.cpp:4934
clang::ASTDeclReader::VisitVarTemplateDecl
void VisitVarTemplateDecl(VarTemplateDecl *D)
TODO: Unify with ClassTemplateDecl version? May require unifying ClassTemplateDecl and VarTemplateDec...
Definition: ASTReaderDecl.cpp:2194
clang::Decl::FromASTFile
unsigned FromASTFile
Whether this declaration was loaded from an AST file.
Definition: DeclBase.h:329
clang::ASTDeclReader::VisitRequiresExprBodyDecl
void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D)
Definition: ASTReaderDecl.cpp:2126
clang::DecompositionDecl
A decomposition declaration.
Definition: DeclCXX.h:4016
clang::LifetimeExtendedTemporaryDecl::CreateDeserialized
static LifetimeExtendedTemporaryDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.h:3126
clang::Type::getAs
const T * getAs() const
Member-template getAs<specific type>'.
Definition: Type.h:7161
clang::serialization::DECL_OBJC_CATEGORY
@ DECL_OBJC_CATEGORY
A ObjCCategoryDecl record.
Definition: ASTBitCodes.h:1264
clang::ObjCMethodDecl::setHasSkippedBody
void setHasSkippedBody(bool Skipped=true)
Definition: DeclObjC.h:483
clang::CXXConversionDecl::CreateDeserialized
static CXXConversionDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclCXX.cpp:2763
clang::serialization::DECL_OBJC_AT_DEFS_FIELD
@ DECL_OBJC_AT_DEFS_FIELD
A ObjCAtDefsFieldDecl record.
Definition: ASTBitCodes.h:1261
clang::ObjCMethodDecl::setIsRedeclaration
void setIsRedeclaration(bool RD)
Definition: DeclObjC.h:270
clang::ObjCCompatibleAliasDecl::setClassInterface
void setClassInterface(ObjCInterfaceDecl *D)
Definition: DeclObjC.h:2741
clang::serialization::DECL_LINKAGE_SPEC
@ DECL_LINKAGE_SPEC
A LinkageSpecDecl record.
Definition: ASTBitCodes.h:1370
clang::serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION
@ DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION
A VarTemplatePartialSpecializationDecl record.
Definition: ASTBitCodes.h:1418
clang::serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION
@ DECL_CLASS_TEMPLATE_SPECIALIZATION
A ClassTemplateSpecializationDecl record.
Definition: ASTBitCodes.h:1406
clang::ObjCMethodDecl::CreateDeserialized
static ObjCMethodDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:819
clang::RecordDecl::setHasNonTrivialToPrimitiveDestructCUnion
void setHasNonTrivialToPrimitiveDestructCUnion(bool V)
Definition: Decl.h:3994
clang::ASTRecordReader::readString
std::string readString()
Read a string, advancing Idx.
Definition: ASTRecordReader.h:309
isSameQualifier
static bool isSameQualifier(const NestedNameSpecifier *X, const NestedNameSpecifier *Y)
Definition: ASTReaderDecl.cpp:3006
clang::ASTDeclReader::UpdateDecl
void UpdateDecl(Decl *D, SmallVectorImpl< serialization::DeclID > &)
Definition: ASTReaderDecl.cpp:4499
clang::LabelDecl
Represents the declaration of a label.
Definition: Decl.h:496
clang::Module::AllVisible
@ AllVisible
All of the names in this module are visible.
Definition: Module.h:316
clang::serialization::DECL_VAR_TEMPLATE
@ DECL_VAR_TEMPLATE
A VarTemplateDecl record.
Definition: ASTBitCodes.h:1412
clang::Decl::getCanonicalDecl
virtual Decl * getCanonicalDecl()
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclBase.h:901
clang::ObjCAtDefsFieldDecl::CreateDeserialized
static ObjCAtDefsFieldDecl * CreateDeserialized(ASTContext &C, unsigned ID)
Definition: DeclObjC.cpp:1871
clang::EnumDecl::getMemberSpecializationInfo
MemberSpecializationInfo * getMemberSpecializationInfo() const
If this enumeration is an instantiation of a member enumeration of a class template specialization,...
Definition: Decl.h:3840
clang::serialization::UPD_DECL_MARKED_OPENMP_THREADPRIVATE
@ UPD_DECL_MARKED_OPENMP_THREADPRIVATE
Definition: ASTCommon.h:40
clang::MSGuidDecl
A global _GUID constant.
Definition: DeclCXX.h:4139
Linkage.h
clang::CXXDestructorDecl
Represents a C++ destructor within a class.
Definition: DeclCXX.h:2668
IdentifierTable.h
clang::DeclContext::isTranslationUnit
bool isTranslationUnit() const
Definition: DeclBase.h:1935
clang::ASTDeclReader::VisitConceptDecl
void VisitConceptDecl(ConceptDecl *D)
Definition: ASTReaderDecl.cpp:2120
clang::ASTDeclReader::VisitParmVarDecl
void VisitParmVarDecl(ParmVarDecl *PD)
Definition: ASTReaderDecl.cpp:1532
clang::NonTypeTemplateParmDecl::setPlaceholderTypeConstraint
void setPlaceholderTypeConstraint(Expr *E)
Definition: DeclTemplate.h:1567
clang::ASTReader::getSubmodule
Module * getSubmodule(serialization::SubmoduleID GlobalID)
Retrieve the submodule that corresponds to a global submodule ID.
Definition: ASTReader.cpp:8604
clang::ObjCMethodDecl::setDefined
void setDefined(bool isDefined)
Definition: DeclObjC.h:458
Type.h
clang::ImplicitParamDecl
Definition: Decl.h:1601
merged_redecls
static llvm::iterator_range< MergedRedeclIterator< DeclT > > merged_redecls(DeclT *D)
Definition: ASTReaderDecl.cpp:502
isConsumerInterestedIn
static bool isConsumerInterestedIn(ASTContext &Ctx, Decl *D, bool HasBody)
Determine whether the consumer will be interested in seeing this declaration (via HandleTopLevelDecl)...
Definition: ASTReaderDecl.cpp:2880
Expr.h
clang::diff::Update
@ Update
Definition: ASTDiff.h:30
clang::FriendDecl
FriendDecl - Represents the declaration of a friend entity, which can be a function,...
Definition: DeclFriend.h:53
clang::TemplateTemplateParmDecl
TemplateTemplateParmDecl - Declares a template template parameter, e.g., "T" in.
Definition: DeclTemplate.h:1601
clang::FunctionDecl::DefaultedFunctionInfo::Create
static DefaultedFunctionInfo * Create(ASTContext &Context, ArrayRef< DeclAccessPair > Lookups)
Definition: Decl.cpp:2930
clang::TemplateArgumentListInfo::setLAngleLoc
void setLAngleLoc(SourceLocation Loc)
Definition: TemplateBase.h:583
clang::TypeAliasDecl::setDescribedAliasTemplate
void setDescribedAliasTemplate(TypeAliasTemplateDecl *TAT)
Definition: Decl.h:3320
clang::NamespaceDecl::setAnonymousNamespace
void setAnonymousNamespace(NamespaceDecl *D)
Definition: Decl.h:641
ASTContext.h
clang::UnresolvedSet< 8 >
clang::TemplateTemplateParmDecl::getNumExpansionTemplateParameters
unsigned getNumExpansionTemplateParameters() const
Retrieves the number of expansion template parameters in an expanded parameter pack.
Definition: DeclTemplate.h:1703
clang::serialization::DECL_OBJC_PROPERTY
@ DECL_OBJC_PROPERTY
A ObjCPropertyDecl record.
Definition: ASTBitCodes.h:1276
clang::EnumConstantDecl::setInitExpr
void setInitExpr(Expr *E)
Definition: Decl.h:3073
clang::ParmVarDecl::setUninstantiatedDefaultArg
void setUninstantiatedDefaultArg(Expr *arg)
Definition: Decl.cpp:2843
clang::VarDecl
Represents a variable declaration or definition.
Definition: Decl.h:876
clang::serialization::DECL_OMP_REQUIRES
@ DECL_OMP_REQUIRES
An OMPRequiresDecl record.
Definition: ASTBitCodes.h:1472
clang::ASTDeclReader::getMostRecentDecl
static Decl * getMostRecentDecl(Decl *D)
Definition: ASTReaderDecl.cpp:3592