Coverage Report

Created: 2019-02-21 13:17

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/clang/include/clang/AST/Decl.h
Line
Count
Source (jump to first uncovered line)
1
//===- Decl.h - Classes for representing declarations -----------*- C++ -*-===//
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 defines the Decl subclasses.
10
//
11
//===----------------------------------------------------------------------===//
12
13
#ifndef LLVM_CLANG_AST_DECL_H
14
#define LLVM_CLANG_AST_DECL_H
15
16
#include "clang/AST/APValue.h"
17
#include "clang/AST/ASTContextAllocate.h"
18
#include "clang/AST/DeclBase.h"
19
#include "clang/AST/DeclarationName.h"
20
#include "clang/AST/ExternalASTSource.h"
21
#include "clang/AST/NestedNameSpecifier.h"
22
#include "clang/AST/Redeclarable.h"
23
#include "clang/AST/Type.h"
24
#include "clang/Basic/AddressSpaces.h"
25
#include "clang/Basic/Diagnostic.h"
26
#include "clang/Basic/IdentifierTable.h"
27
#include "clang/Basic/LLVM.h"
28
#include "clang/Basic/Linkage.h"
29
#include "clang/Basic/OperatorKinds.h"
30
#include "clang/Basic/PartialDiagnostic.h"
31
#include "clang/Basic/PragmaKinds.h"
32
#include "clang/Basic/SourceLocation.h"
33
#include "clang/Basic/Specifiers.h"
34
#include "clang/Basic/Visibility.h"
35
#include "llvm/ADT/APSInt.h"
36
#include "llvm/ADT/ArrayRef.h"
37
#include "llvm/ADT/Optional.h"
38
#include "llvm/ADT/PointerIntPair.h"
39
#include "llvm/ADT/PointerUnion.h"
40
#include "llvm/ADT/StringRef.h"
41
#include "llvm/ADT/iterator_range.h"
42
#include "llvm/Support/Casting.h"
43
#include "llvm/Support/Compiler.h"
44
#include "llvm/Support/TrailingObjects.h"
45
#include <cassert>
46
#include <cstddef>
47
#include <cstdint>
48
#include <string>
49
#include <utility>
50
51
namespace clang {
52
53
class ASTContext;
54
struct ASTTemplateArgumentListInfo;
55
class Attr;
56
class CompoundStmt;
57
class DependentFunctionTemplateSpecializationInfo;
58
class EnumDecl;
59
class Expr;
60
class FunctionTemplateDecl;
61
class FunctionTemplateSpecializationInfo;
62
class LabelStmt;
63
class MemberSpecializationInfo;
64
class Module;
65
class NamespaceDecl;
66
class ParmVarDecl;
67
class RecordDecl;
68
class Stmt;
69
class StringLiteral;
70
class TagDecl;
71
class TemplateArgumentList;
72
class TemplateArgumentListInfo;
73
class TemplateParameterList;
74
class TypeAliasTemplateDecl;
75
class TypeLoc;
76
class UnresolvedSetImpl;
77
class VarTemplateDecl;
78
79
/// A container of type source information.
80
///
81
/// A client can read the relevant info using TypeLoc wrappers, e.g:
82
/// @code
83
/// TypeLoc TL = TypeSourceInfo->getTypeLoc();
84
/// TL.getBeginLoc().print(OS, SrcMgr);
85
/// @endcode
86
class alignas(8) TypeSourceInfo {
87
  // Contains a memory block after the class, used for type source information,
88
  // allocated by ASTContext.
89
  friend class ASTContext;
90
91
  QualType Ty;
92
93
50.3M
  TypeSourceInfo(QualType ty) : Ty(ty) {}
94
95
public:
96
  /// Return the type wrapped by this type source info.
97
199M
  QualType getType() const { return Ty; }
98
99
  /// Return the TypeLoc wrapper for the type source info.
100
  TypeLoc getTypeLoc() const; // implemented in TypeLoc.h
101
102
  /// Override the type stored in this TypeSourceInfo. Use with caution!
103
47.3k
  void overrideType(QualType T) { Ty = T; }
104
};
105
106
/// The top declaration context.
107
class TranslationUnitDecl : public Decl, public DeclContext {
108
  ASTContext &Ctx;
109
110
  /// The (most recently entered) anonymous namespace for this
111
  /// translation unit, if one has been created.
112
  NamespaceDecl *AnonymousNamespace = nullptr;
113
114
  explicit TranslationUnitDecl(ASTContext &ctx);
115
116
  virtual void anchor();
117
118
public:
119
735M
  ASTContext &getASTContext() const { return Ctx; }
120
121
4.19k
  NamespaceDecl *getAnonymousNamespace() const { return AnonymousNamespace; }
122
642
  void setAnonymousNamespace(NamespaceDecl *D) { AnonymousNamespace = D; }
123
124
  static TranslationUnitDecl *Create(ASTContext &C);
125
126
  // Implement isa/cast/dyncast/etc.
127
713M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
128
774M
  static bool classofKind(Kind K) { return K == TranslationUnit; }
129
13.2k
  static DeclContext *castToDeclContext(const TranslationUnitDecl *D) {
130
13.2k
    return static_cast<DeclContext *>(const_cast<TranslationUnitDecl*>(D));
131
13.2k
  }
132
0
  static TranslationUnitDecl *castFromDeclContext(const DeclContext *DC) {
133
0
    return static_cast<TranslationUnitDecl *>(const_cast<DeclContext*>(DC));
134
0
  }
135
};
136
137
/// Represents a `#pragma comment` line. Always a child of
138
/// TranslationUnitDecl.
139
class PragmaCommentDecl final
140
    : public Decl,
141
      private llvm::TrailingObjects<PragmaCommentDecl, char> {
142
  friend class ASTDeclReader;
143
  friend class ASTDeclWriter;
144
  friend TrailingObjects;
145
146
  PragmaMSCommentKind CommentKind;
147
148
  PragmaCommentDecl(TranslationUnitDecl *TU, SourceLocation CommentLoc,
149
                    PragmaMSCommentKind CommentKind)
150
53
      : Decl(PragmaComment, TU, CommentLoc), CommentKind(CommentKind) {}
151
152
  virtual void anchor();
153
154
public:
155
  static PragmaCommentDecl *Create(const ASTContext &C, TranslationUnitDecl *DC,
156
                                   SourceLocation CommentLoc,
157
                                   PragmaMSCommentKind CommentKind,
158
                                   StringRef Arg);
159
  static PragmaCommentDecl *CreateDeserialized(ASTContext &C, unsigned ID,
160
                                               unsigned ArgSize);
161
162
43
  PragmaMSCommentKind getCommentKind() const { return CommentKind; }
163
164
43
  StringRef getArg() const { return getTrailingObjects<char>(); }
165
166
  // Implement isa/cast/dyncast/etc.
167
356k
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
168
356k
  static bool classofKind(Kind K) { return K == PragmaComment; }
169
};
170
171
/// Represents a `#pragma detect_mismatch` line. Always a child of
172
/// TranslationUnitDecl.
173
class PragmaDetectMismatchDecl final
174
    : public Decl,
175
      private llvm::TrailingObjects<PragmaDetectMismatchDecl, char> {
176
  friend class ASTDeclReader;
177
  friend class ASTDeclWriter;
178
  friend TrailingObjects;
179
180
  size_t ValueStart;
181
182
  PragmaDetectMismatchDecl(TranslationUnitDecl *TU, SourceLocation Loc,
183
                           size_t ValueStart)
184
12
      : Decl(PragmaDetectMismatch, TU, Loc), ValueStart(ValueStart) {}
185
186
  virtual void anchor();
187
188
public:
189
  static PragmaDetectMismatchDecl *Create(const ASTContext &C,
190
                                          TranslationUnitDecl *DC,
191
                                          SourceLocation Loc, StringRef Name,
192
                                          StringRef Value);
193
  static PragmaDetectMismatchDecl *
194
  CreateDeserialized(ASTContext &C, unsigned ID, unsigned NameValueSize);
195
196
10
  StringRef getName() const { return getTrailingObjects<char>(); }
197
10
  StringRef getValue() const { return getTrailingObjects<char>() + ValueStart; }
198
199
  // Implement isa/cast/dyncast/etc.
200
356k
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
201
356k
  static bool classofKind(Kind K) { return K == PragmaDetectMismatch; }
202
};
203
204
/// Declaration context for names declared as extern "C" in C++. This
205
/// is neither the semantic nor lexical context for such declarations, but is
206
/// used to check for conflicts with other extern "C" declarations. Example:
207
///
208
/// \code
209
///   namespace N { extern "C" void f(); } // #1
210
///   void N::f() {}                       // #2
211
///   namespace M { extern "C" void f(); } // #3
212
/// \endcode
213
///
214
/// The semantic context of #1 is namespace N and its lexical context is the
215
/// LinkageSpecDecl; the semantic context of #2 is namespace N and its lexical
216
/// context is the TU. However, both declarations are also visible in the
217
/// extern "C" context.
218
///
219
/// The declaration at #3 finds it is a redeclaration of \c N::f through
220
/// lookup in the extern "C" context.
221
class ExternCContextDecl : public Decl, public DeclContext {
222
  explicit ExternCContextDecl(TranslationUnitDecl *TU)
223
    : Decl(ExternCContext, TU, SourceLocation()),
224
29.7k
      DeclContext(ExternCContext) {}
225
226
  virtual void anchor();
227
228
public:
229
  static ExternCContextDecl *Create(const ASTContext &C,
230
                                    TranslationUnitDecl *TU);
231
232
  // Implement isa/cast/dyncast/etc.
233
0
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
234
0
  static bool classofKind(Kind K) { return K == ExternCContext; }
235
0
  static DeclContext *castToDeclContext(const ExternCContextDecl *D) {
236
0
    return static_cast<DeclContext *>(const_cast<ExternCContextDecl*>(D));
237
0
  }
238
0
  static ExternCContextDecl *castFromDeclContext(const DeclContext *DC) {
239
0
    return static_cast<ExternCContextDecl *>(const_cast<DeclContext*>(DC));
240
0
  }
241
};
242
243
/// This represents a decl that may have a name.  Many decls have names such
244
/// as ObjCMethodDecl, but not \@class, etc.
245
///
246
/// Note that not every NamedDecl is actually named (e.g., a struct might
247
/// be anonymous), and not every name is an identifier.
248
class NamedDecl : public Decl {
249
  /// The name of this declaration, which is typically a normal
250
  /// identifier but may also be a special kind of name (C++
251
  /// constructor, Objective-C selector, etc.)
252
  DeclarationName Name;
253
254
  virtual void anchor();
255
256
private:
257
  NamedDecl *getUnderlyingDeclImpl() LLVM_READONLY;
258
259
protected:
260
  NamedDecl(Kind DK, DeclContext *DC, SourceLocation L, DeclarationName N)
261
41.0M
      : Decl(DK, DC, L), Name(N) {}
262
263
public:
264
  /// Get the identifier that names this declaration, if there is one.
265
  ///
266
  /// This will return NULL if this declaration has no name (e.g., for
267
  /// an unnamed class) or if the name is a special name (C++ constructor,
268
  /// Objective-C selector, etc.).
269
176M
  IdentifierInfo *getIdentifier() const { return Name.getAsIdentifierInfo(); }
270
271
  /// Get the name of identifier for this declaration as a StringRef.
272
  ///
273
  /// This requires that the declaration have a name and that it be a simple
274
  /// identifier.
275
4.11M
  StringRef getName() const {
276
4.11M
    assert(Name.isIdentifier() && "Name is not a simple identifier");
277
4.11M
    return getIdentifier() ? 
getIdentifier()->getName()4.01M
:
""98.1k
;
278
4.11M
  }
279
280
  /// Get a human-readable name for the declaration, even if it is one of the
281
  /// special kinds of names (C++ constructor, Objective-C selector, etc).
282
  ///
283
  /// Creating this name requires expensive string manipulation, so it should
284
  /// be called only when performance doesn't matter. For simple declarations,
285
  /// getNameAsCString() should suffice.
286
  //
287
  // FIXME: This function should be renamed to indicate that it is not just an
288
  // alternate form of getName(), and clients should move as appropriate.
289
  //
290
  // FIXME: Deprecated, move clients to getName().
291
32.3k
  std::string getNameAsString() const { return Name.getAsString(); }
292
293
  virtual void printName(raw_ostream &os) const;
294
295
  /// Get the actual, stored name of the declaration, which may be a special
296
  /// name.
297
473M
  DeclarationName getDeclName() const { return Name; }
298
299
  /// Set the name of this declaration.
300
536k
  void setDeclName(DeclarationName N) { Name = N; }
301
302
  /// Returns a human-readable qualified name for this declaration, like
303
  /// A::B::i, for i being member of namespace A::B.
304
  ///
305
  /// If the declaration is not a member of context which can be named (record,
306
  /// namespace), it will return the same result as printName().
307
  ///
308
  /// Creating this name is expensive, so it should be called only when
309
  /// performance doesn't matter.
310
  void printQualifiedName(raw_ostream &OS) const;
311
  void printQualifiedName(raw_ostream &OS, const PrintingPolicy &Policy) const;
312
313
  // FIXME: Remove string version.
314
  std::string getQualifiedNameAsString() const;
315
316
  /// Appends a human-readable name for this declaration into the given stream.
317
  ///
318
  /// This is the method invoked by Sema when displaying a NamedDecl
319
  /// in a diagnostic.  It does not necessarily produce the same
320
  /// result as printName(); for example, class template
321
  /// specializations are printed with their template arguments.
322
  virtual void getNameForDiagnostic(raw_ostream &OS,
323
                                    const PrintingPolicy &Policy,
324
                                    bool Qualified) const;
325
326
  /// Determine whether this declaration, if known to be well-formed within
327
  /// its context, will replace the declaration OldD if introduced into scope.
328
  ///
329
  /// A declaration will replace another declaration if, for example, it is
330
  /// a redeclaration of the same variable or function, but not if it is a
331
  /// declaration of a different kind (function vs. class) or an overloaded
332
  /// function.
333
  ///
334
  /// \param IsKnownNewer \c true if this declaration is known to be newer
335
  /// than \p OldD (for instance, if this declaration is newly-created).
336
  bool declarationReplaces(NamedDecl *OldD, bool IsKnownNewer = true) const;
337
338
  /// Determine whether this declaration has linkage.
339
  bool hasLinkage() const;
340
341
  using Decl::isModulePrivate;
342
  using Decl::setModulePrivate;
343
344
  /// Determine whether this declaration is a C++ class member.
345
32.7M
  bool isCXXClassMember() const {
346
32.7M
    const DeclContext *DC = getDeclContext();
347
32.7M
348
32.7M
    // C++0x [class.mem]p1:
349
32.7M
    //   The enumerators of an unscoped enumeration defined in
350
32.7M
    //   the class are members of the class.
351
32.7M
    if (isa<EnumDecl>(DC))
352
310k
      DC = DC->getRedeclContext();
353
32.7M
354
32.7M
    return DC->isRecord();
355
32.7M
  }
356
357
  /// Determine whether the given declaration is an instance member of
358
  /// a C++ class.
359
  bool isCXXInstanceMember() const;
360
361
  /// Determine what kind of linkage this entity has.
362
  ///
363
  /// This is not the linkage as defined by the standard or the codegen notion
364
  /// of linkage. It is just an implementation detail that is used to compute
365
  /// those.
366
  Linkage getLinkageInternal() const;
367
368
  /// Get the linkage from a semantic point of view. Entities in
369
  /// anonymous namespaces are external (in c++98).
370
7.24M
  Linkage getFormalLinkage() const {
371
7.24M
    return clang::getFormalLinkage(getLinkageInternal());
372
7.24M
  }
373
374
  /// True if this decl has external linkage.
375
20.6M
  bool hasExternalFormalLinkage() const {
376
20.6M
    return isExternalFormalLinkage(getLinkageInternal());
377
20.6M
  }
378
379
24.6M
  bool isExternallyVisible() const {
380
24.6M
    return clang::isExternallyVisible(getLinkageInternal());
381
24.6M
  }
382
383
  /// Determine whether this declaration can be redeclared in a
384
  /// different translation unit.
385
2.79k
  bool isExternallyDeclarable() const {
386
2.79k
    return isExternallyVisible() && 
!getOwningModuleForLinkage()2.69k
;
387
2.79k
  }
388
389
  /// Determines the visibility of this entity.
390
31.0k
  Visibility getVisibility() const {
391
31.0k
    return getLinkageAndVisibility().getVisibility();
392
31.0k
  }
393
394
  /// Determines the linkage and visibility of this entity.
395
  LinkageInfo getLinkageAndVisibility() const;
396
397
  /// Kinds of explicit visibility.
398
  enum ExplicitVisibilityKind {
399
    /// Do an LV computation for, ultimately, a type.
400
    /// Visibility may be restricted by type visibility settings and
401
    /// the visibility of template arguments.
402
    VisibilityForType,
403
404
    /// Do an LV computation for, ultimately, a non-type declaration.
405
    /// Visibility may be restricted by value visibility settings and
406
    /// the visibility of template arguments.
407
    VisibilityForValue
408
  };
409
410
  /// If visibility was explicitly specified for this
411
  /// declaration, return that visibility.
412
  Optional<Visibility>
413
  getExplicitVisibility(ExplicitVisibilityKind kind) const;
414
415
  /// True if the computed linkage is valid. Used for consistency
416
  /// checking. Should always return true.
417
  bool isLinkageValid() const;
418
419
  /// True if something has required us to compute the linkage
420
  /// of this declaration.
421
  ///
422
  /// Language features which can retroactively change linkage (like a
423
  /// typedef name for linkage purposes) may need to consider this,
424
  /// but hopefully only in transitory ways during parsing.
425
93.9k
  bool hasLinkageBeenComputed() const {
426
93.9k
    return hasCachedLinkage();
427
93.9k
  }
428
429
  /// Looks through UsingDecls and ObjCCompatibleAliasDecls for
430
  /// the underlying named decl.
431
247M
  NamedDecl *getUnderlyingDecl() {
432
247M
    // Fast-path the common case.
433
247M
    if (this->getKind() != UsingShadow &&
434
247M
        
this->getKind() != ConstructorUsingShadow245M
&&
435
247M
        
this->getKind() != ObjCCompatibleAlias245M
&&
436
247M
        
this->getKind() != NamespaceAlias245M
)
437
245M
      return this;
438
2.36M
439
2.36M
    return getUnderlyingDeclImpl();
440
2.36M
  }
441
2.19M
  const NamedDecl *getUnderlyingDecl() const {
442
2.19M
    return const_cast<NamedDecl*>(this)->getUnderlyingDecl();
443
2.19M
  }
444
445
26.2M
  NamedDecl *getMostRecentDecl() {
446
26.2M
    return cast<NamedDecl>(static_cast<Decl *>(this)->getMostRecentDecl());
447
26.2M
  }
448
18.2M
  const NamedDecl *getMostRecentDecl() const {
449
18.2M
    return const_cast<NamedDecl*>(this)->getMostRecentDecl();
450
18.2M
  }
451
452
  ObjCStringFormatFamily getObjCFStringFormattingFamily() const;
453
454
51.2M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
455
54.0M
  static bool classofKind(Kind K) { return K >= firstNamed && 
K <= lastNamed52.5M
; }
456
};
457
458
308k
inline raw_ostream &operator<<(raw_ostream &OS, const NamedDecl &ND) {
459
308k
  ND.printName(OS);
460
308k
  return OS;
461
308k
}
462
463
/// Represents the declaration of a label.  Labels also have a
464
/// corresponding LabelStmt, which indicates the position that the label was
465
/// defined at.  For normal labels, the location of the decl is the same as the
466
/// location of the statement.  For GNU local labels (__label__), the decl
467
/// location is where the __label__ is.
468
class LabelDecl : public NamedDecl {
469
  LabelStmt *TheStmt;
470
  StringRef MSAsmName;
471
  bool MSAsmNameResolved = false;
472
473
  /// For normal labels, this is the same as the main declaration
474
  /// label, i.e., the location of the identifier; for GNU local labels,
475
  /// this is the location of the __label__ keyword.
476
  SourceLocation LocStart;
477
478
  LabelDecl(DeclContext *DC, SourceLocation IdentL, IdentifierInfo *II,
479
            LabelStmt *S, SourceLocation StartL)
480
4.28k
      : NamedDecl(Label, DC, IdentL, II), TheStmt(S), LocStart(StartL) {}
481
482
  void anchor() override;
483
484
public:
485
  static LabelDecl *Create(ASTContext &C, DeclContext *DC,
486
                           SourceLocation IdentL, IdentifierInfo *II);
487
  static LabelDecl *Create(ASTContext &C, DeclContext *DC,
488
                           SourceLocation IdentL, IdentifierInfo *II,
489
                           SourceLocation GnuLabelL);
490
  static LabelDecl *CreateDeserialized(ASTContext &C, unsigned ID);
491
492
21.3k
  LabelStmt *getStmt() const { return TheStmt; }
493
4.02k
  void setStmt(LabelStmt *T) { TheStmt = T; }
494
495
7.98k
  bool isGnuLocal() const { return LocStart != getLocation(); }
496
4.00k
  void setLocStart(SourceLocation L) { LocStart = L; }
497
498
420
  SourceRange getSourceRange() const override LLVM_READONLY {
499
420
    return SourceRange(LocStart, getLocation());
500
420
  }
501
502
11.6k
  bool isMSAsmLabel() const { return !MSAsmName.empty(); }
503
28
  bool isResolvedMSAsmLabel() const { return isMSAsmLabel() && MSAsmNameResolved; }
504
  void setMSAsmLabel(StringRef Name);
505
43
  StringRef getMSAsmLabel() const { return MSAsmName; }
506
18
  void setMSAsmLabelResolved() { MSAsmNameResolved = true; }
507
508
  // Implement isa/cast/dyncast/etc.
509
56.6M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
510
56.6M
  static bool classofKind(Kind K) { return K == Label; }
511
};
512
513
/// Represent a C++ namespace.
514
class NamespaceDecl : public NamedDecl, public DeclContext,
515
                      public Redeclarable<NamespaceDecl>
516
{
517
  /// The starting location of the source range, pointing
518
  /// to either the namespace or the inline keyword.
519
  SourceLocation LocStart;
520
521
  /// The ending location of the source range.
522
  SourceLocation RBraceLoc;
523
524
  /// A pointer to either the anonymous namespace that lives just inside
525
  /// this namespace or to the first namespace in the chain (the latter case
526
  /// only when this is not the first in the chain), along with a
527
  /// boolean value indicating whether this is an inline namespace.
528
  llvm::PointerIntPair<NamespaceDecl *, 1, bool> AnonOrFirstNamespaceAndInline;
529
530
  NamespaceDecl(ASTContext &C, DeclContext *DC, bool Inline,
531
                SourceLocation StartLoc, SourceLocation IdLoc,
532
                IdentifierInfo *Id, NamespaceDecl *PrevDecl);
533
534
  using redeclarable_base = Redeclarable<NamespaceDecl>;
535
536
  NamespaceDecl *getNextRedeclarationImpl() override;
537
  NamespaceDecl *getPreviousDeclImpl() override;
538
  NamespaceDecl *getMostRecentDeclImpl() override;
539
540
public:
541
  friend class ASTDeclReader;
542
  friend class ASTDeclWriter;
543
544
  static NamespaceDecl *Create(ASTContext &C, DeclContext *DC,
545
                               bool Inline, SourceLocation StartLoc,
546
                               SourceLocation IdLoc, IdentifierInfo *Id,
547
                               NamespaceDecl *PrevDecl);
548
549
  static NamespaceDecl *CreateDeserialized(ASTContext &C, unsigned ID);
550
551
  using redecl_range = redeclarable_base::redecl_range;
552
  using redecl_iterator = redeclarable_base::redecl_iterator;
553
554
  using redeclarable_base::redecls_begin;
555
  using redeclarable_base::redecls_end;
556
  using redeclarable_base::redecls;
557
  using redeclarable_base::getPreviousDecl;
558
  using redeclarable_base::getMostRecentDecl;
559
  using redeclarable_base::isFirstDecl;
560
561
  /// Returns true if this is an anonymous namespace declaration.
562
  ///
563
  /// For example:
564
  /// \code
565
  ///   namespace {
566
  ///     ...
567
  ///   };
568
  /// \endcode
569
  /// q.v. C++ [namespace.unnamed]
570
4.99M
  bool isAnonymousNamespace() const {
571
4.99M
    return !getIdentifier();
572
4.99M
  }
573
574
  /// Returns true if this is an inline namespace declaration.
575
3.96M
  bool isInline() const {
576
3.96M
    return AnonOrFirstNamespaceAndInline.getInt();
577
3.96M
  }
578
579
  /// Set whether this is an inline namespace declaration.
580
962
  void setInline(bool Inline) {
581
962
    AnonOrFirstNamespaceAndInline.setInt(Inline);
582
962
  }
583
584
  /// Get the original (first) namespace declaration.
585
  NamespaceDecl *getOriginalNamespace();
586
587
  /// Get the original (first) namespace declaration.
588
  const NamespaceDecl *getOriginalNamespace() const;
589
590
  /// Return true if this declaration is an original (first) declaration
591
  /// of the namespace. This is false for non-original (subsequent) namespace
592
  /// declarations and anonymous namespaces.
593
  bool isOriginalNamespace() const;
594
595
  /// Retrieve the anonymous namespace nested inside this namespace,
596
  /// if any.
597
1.23k
  NamespaceDecl *getAnonymousNamespace() const {
598
1.23k
    return getOriginalNamespace()->AnonOrFirstNamespaceAndInline.getPointer();
599
1.23k
  }
600
601
652
  void setAnonymousNamespace(NamespaceDecl *D) {
602
652
    getOriginalNamespace()->AnonOrFirstNamespaceAndInline.setPointer(D);
603
652
  }
604
605
  /// Retrieves the canonical declaration of this namespace.
606
9.21M
  NamespaceDecl *getCanonicalDecl() override {
607
9.21M
    return getOriginalNamespace();
608
9.21M
  }
609
0
  const NamespaceDecl *getCanonicalDecl() const {
610
0
    return getOriginalNamespace();
611
0
  }
612
613
740
  SourceRange getSourceRange() const override LLVM_READONLY {
614
740
    return SourceRange(LocStart, RBraceLoc);
615
740
  }
616
617
915
  SourceLocation getBeginLoc() const LLVM_READONLY { return LocStart; }
618
718
  SourceLocation getRBraceLoc() const { return RBraceLoc; }
619
0
  void setLocStart(SourceLocation L) { LocStart = L; }
620
118k
  void setRBraceLoc(SourceLocation L) { RBraceLoc = L; }
621
622
  // Implement isa/cast/dyncast/etc.
623
68.3M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
624
83.6M
  static bool classofKind(Kind K) { return K == Namespace; }
625
5.18k
  static DeclContext *castToDeclContext(const NamespaceDecl *D) {
626
5.18k
    return static_cast<DeclContext *>(const_cast<NamespaceDecl*>(D));
627
5.18k
  }
628
0
  static NamespaceDecl *castFromDeclContext(const DeclContext *DC) {
629
0
    return static_cast<NamespaceDecl *>(const_cast<DeclContext*>(DC));
630
0
  }
631
};
632
633
/// Represent the declaration of a variable (in which case it is
634
/// an lvalue) a function (in which case it is a function designator) or
635
/// an enum constant.
636
class ValueDecl : public NamedDecl {
637
  QualType DeclType;
638
639
  void anchor() override;
640
641
protected:
642
  ValueDecl(Kind DK, DeclContext *DC, SourceLocation L,
643
            DeclarationName N, QualType T)
644
30.1M
    : NamedDecl(DK, DC, L, N), DeclType(T) {}
645
646
public:
647
553M
  QualType getType() const { return DeclType; }
648
2.18M
  void setType(QualType newType) { DeclType = newType; }
649
650
  /// Determine whether this symbol is weakly-imported,
651
  ///        or declared with the weak or weak-ref attr.
652
  bool isWeak() const;
653
654
  // Implement isa/cast/dyncast/etc.
655
24.5M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
656
24.5M
  static bool classofKind(Kind K) { return K >= firstValue && 
K <= lastValue24.2M
; }
657
};
658
659
/// A struct with extended info about a syntactic
660
/// name qualifier, to be used for the case of out-of-line declarations.
661
struct QualifierInfo {
662
  NestedNameSpecifierLoc QualifierLoc;
663
664
  /// The number of "outer" template parameter lists.
665
  /// The count includes all of the template parameter lists that were matched
666
  /// against the template-ids occurring into the NNS and possibly (in the
667
  /// case of an explicit specialization) a final "template <>".
668
  unsigned NumTemplParamLists = 0;
669
670
  /// A new-allocated array of size NumTemplParamLists,
671
  /// containing pointers to the "outer" template parameter lists.
672
  /// It includes all of the template parameter lists that were matched
673
  /// against the template-ids occurring into the NNS and possibly (in the
674
  /// case of an explicit specialization) a final "template <>".
675
  TemplateParameterList** TemplParamLists = nullptr;
676
677
376k
  QualifierInfo() = default;
678
  QualifierInfo(const QualifierInfo &) = delete;
679
  QualifierInfo& operator=(const QualifierInfo &) = delete;
680
681
  /// Sets info about "outer" template parameter lists.
682
  void setTemplateParameterListsInfo(ASTContext &Context,
683
                                     ArrayRef<TemplateParameterList *> TPLists);
684
};
685
686
/// Represents a ValueDecl that came out of a declarator.
687
/// Contains type source information through TypeSourceInfo.
688
class DeclaratorDecl : public ValueDecl {
689
  // A struct representing both a TInfo and a syntactic qualifier,
690
  // to be used for the (uncommon) case of out-of-line declarations.
691
  struct ExtInfo : public QualifierInfo {
692
    TypeSourceInfo *TInfo;
693
  };
694
695
  llvm::PointerUnion<TypeSourceInfo *, ExtInfo *> DeclInfo;
696
697
  /// The start of the source range for this declaration,
698
  /// ignoring outer template declarations.
699
  SourceLocation InnerLocStart;
700
701
49.3M
  bool hasExtInfo() const { return DeclInfo.is<ExtInfo*>(); }
702
880k
  ExtInfo *getExtInfo() { return DeclInfo.get<ExtInfo*>(); }
703
1.40M
  const ExtInfo *getExtInfo() const { return DeclInfo.get<ExtInfo*>(); }
704
705
protected:
706
  DeclaratorDecl(Kind DK, DeclContext *DC, SourceLocation L,
707
                 DeclarationName N, QualType T, TypeSourceInfo *TInfo,
708
                 SourceLocation StartL)
709
29.7M
      : ValueDecl(DK, DC, L, N, T), DeclInfo(TInfo), InnerLocStart(StartL) {}
710
711
public:
712
  friend class ASTDeclReader;
713
  friend class ASTDeclWriter;
714
715
37.2M
  TypeSourceInfo *getTypeSourceInfo() const {
716
37.2M
    return hasExtInfo()
717
37.2M
      ? 
getExtInfo()->TInfo687k
718
37.2M
      : 
DeclInfo.get<TypeSourceInfo*>()36.5M
;
719
37.2M
  }
720
721
180k
  void setTypeSourceInfo(TypeSourceInfo *TI) {
722
180k
    if (hasExtInfo())
723
468
      getExtInfo()->TInfo = TI;
724
180k
    else
725
180k
      DeclInfo = TI;
726
180k
  }
727
728
  /// Return start of source range ignoring outer template declarations.
729
11.4M
  SourceLocation getInnerLocStart() const { return InnerLocStart; }
730
474k
  void setInnerLocStart(SourceLocation L) { InnerLocStart = L; }
731
732
  /// Return start of source range taking into account any outer template
733
  /// declarations.
734
  SourceLocation getOuterLocStart() const;
735
736
  SourceRange getSourceRange() const override LLVM_READONLY;
737
738
85.8k
  SourceLocation getBeginLoc() const LLVM_READONLY {
739
85.8k
    return getOuterLocStart();
740
85.8k
  }
741
742
  /// Retrieve the nested-name-specifier that qualifies the name of this
743
  /// declaration, if it was present in the source.
744
1.17M
  NestedNameSpecifier *getQualifier() const {
745
1.17M
    return hasExtInfo() ? 
getExtInfo()->QualifierLoc.getNestedNameSpecifier()509k
746
1.17M
                        : 
nullptr664k
;
747
1.17M
  }
748
749
  /// Retrieve the nested-name-specifier (with source-location
750
  /// information) that qualifies the name of this declaration, if it was
751
  /// present in the source.
752
2.61M
  NestedNameSpecifierLoc getQualifierLoc() const {
753
2.61M
    return hasExtInfo() ? 
getExtInfo()->QualifierLoc65.2k
754
2.61M
                        : 
NestedNameSpecifierLoc()2.54M
;
755
2.61M
  }
756
757
  void setQualifierInfo(NestedNameSpecifierLoc QualifierLoc);
758
759
6.59M
  unsigned getNumTemplateParameterLists() const {
760
6.59M
    return hasExtInfo() ? 
getExtInfo()->NumTemplParamLists123k
:
06.46M
;
761
6.59M
  }
762
763
18.6k
  TemplateParameterList *getTemplateParameterList(unsigned index) const {
764
18.6k
    assert(index < getNumTemplateParameterLists());
765
18.6k
    return getExtInfo()->TemplParamLists[index];
766
18.6k
  }
767
768
  void setTemplateParameterListsInfo(ASTContext &Context,
769
                                     ArrayRef<TemplateParameterList *> TPLists);
770
771
  SourceLocation getTypeSpecStartLoc() const;
772
773
  // Implement isa/cast/dyncast/etc.
774
8.56M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
775
8.56M
  static bool classofKind(Kind K) {
776
8.56M
    return K >= firstDeclarator && 
K <= lastDeclarator6.93M
;
777
8.56M
  }
778
};
779
780
/// Structure used to store a statement, the constant value to
781
/// which it was evaluated (if any), and whether or not the statement
782
/// is an integral constant expression (if known).
783
struct EvaluatedStmt {
784
  /// Whether this statement was already evaluated.
785
  bool WasEvaluated : 1;
786
787
  /// Whether this statement is being evaluated.
788
  bool IsEvaluating : 1;
789
790
  /// Whether we already checked whether this statement was an
791
  /// integral constant expression.
792
  bool CheckedICE : 1;
793
794
  /// Whether we are checking whether this statement is an
795
  /// integral constant expression.
796
  bool CheckingICE : 1;
797
798
  /// Whether this statement is an integral constant expression,
799
  /// or in C++11, whether the statement is a constant expression. Only
800
  /// valid if CheckedICE is true.
801
  bool IsICE : 1;
802
803
  Stmt *Value;
804
  APValue Evaluated;
805
806
  EvaluatedStmt() : WasEvaluated(false), IsEvaluating(false), CheckedICE(false),
807
457k
                    CheckingICE(false), IsICE(false) {}
808
809
};
810
811
/// Represents a variable declaration or definition.
812
class VarDecl : public DeclaratorDecl, public Redeclarable<VarDecl> {
813
public:
814
  /// Initialization styles.
815
  enum InitializationStyle {
816
    /// C-style initialization with assignment
817
    CInit,
818
819
    /// Call-style initialization (C++98)
820
    CallInit,
821
822
    /// Direct list-initialization (C++11)
823
    ListInit
824
  };
825
826
  /// Kinds of thread-local storage.
827
  enum TLSKind {
828
    /// Not a TLS variable.
829
    TLS_None,
830
831
    /// TLS with a known-constant initializer.
832
    TLS_Static,
833
834
    /// TLS with a dynamic initializer.
835
    TLS_Dynamic
836
  };
837
838
  /// Return the string used to specify the storage class \p SC.
839
  ///
840
  /// It is illegal to call this function with SC == None.
841
  static const char *getStorageClassSpecifierString(StorageClass SC);
842
843
protected:
844
  // A pointer union of Stmt * and EvaluatedStmt *. When an EvaluatedStmt, we
845
  // have allocated the auxiliary struct of information there.
846
  //
847
  // TODO: It is a bit unfortunate to use a PointerUnion inside the VarDecl for
848
  // this as *many* VarDecls are ParmVarDecls that don't have default
849
  // arguments. We could save some space by moving this pointer union to be
850
  // allocated in trailing space when necessary.
851
  using InitType = llvm::PointerUnion<Stmt *, EvaluatedStmt *>;
852
853
  /// The initializer for this variable or, for a ParmVarDecl, the
854
  /// C++ default argument.
855
  mutable InitType Init;
856
857
private:
858
  friend class ASTDeclReader;
859
  friend class ASTNodeImporter;
860
  friend class StmtIteratorBase;
861
862
  class VarDeclBitfields {
863
    friend class ASTDeclReader;
864
    friend class VarDecl;
865
866
    unsigned SClass : 3;
867
    unsigned TSCSpec : 2;
868
    unsigned InitStyle : 2;
869
870
    /// Whether this variable is an ARC pseudo-__strong variable; see
871
    /// isARCPseudoStrong() for details.
872
    unsigned ARCPseudoStrong : 1;
873
  };
874
  enum { NumVarDeclBits = 8 };
875
876
protected:
877
  enum { NumParameterIndexBits = 8 };
878
879
  enum DefaultArgKind {
880
    DAK_None,
881
    DAK_Unparsed,
882
    DAK_Uninstantiated,
883
    DAK_Normal
884
  };
885
886
  class ParmVarDeclBitfields {
887
    friend class ASTDeclReader;
888
    friend class ParmVarDecl;
889
890
    unsigned : NumVarDeclBits;
891
892
    /// Whether this parameter inherits a default argument from a
893
    /// prior declaration.
894
    unsigned HasInheritedDefaultArg : 1;
895
896
    /// Describes the kind of default argument for this parameter. By default
897
    /// this is none. If this is normal, then the default argument is stored in
898
    /// the \c VarDecl initializer expression unless we were unable to parse
899
    /// (even an invalid) expression for the default argument.
900
    unsigned DefaultArgKind : 2;
901
902
    /// Whether this parameter undergoes K&R argument promotion.
903
    unsigned IsKNRPromoted : 1;
904
905
    /// Whether this parameter is an ObjC method parameter or not.
906
    unsigned IsObjCMethodParam : 1;
907
908
    /// If IsObjCMethodParam, a Decl::ObjCDeclQualifier.
909
    /// Otherwise, the number of function parameter scopes enclosing
910
    /// the function parameter scope in which this parameter was
911
    /// declared.
912
    unsigned ScopeDepthOrObjCQuals : 7;
913
914
    /// The number of parameters preceding this parameter in the
915
    /// function parameter scope in which it was declared.
916
    unsigned ParameterIndex : NumParameterIndexBits;
917
  };
918
919
  class NonParmVarDeclBitfields {
920
    friend class ASTDeclReader;
921
    friend class ImplicitParamDecl;
922
    friend class VarDecl;
923
924
    unsigned : NumVarDeclBits;
925
926
    // FIXME: We need something similar to CXXRecordDecl::DefinitionData.
927
    /// Whether this variable is a definition which was demoted due to
928
    /// module merge.
929
    unsigned IsThisDeclarationADemotedDefinition : 1;
930
931
    /// Whether this variable is the exception variable in a C++ catch
932
    /// or an Objective-C @catch statement.
933
    unsigned ExceptionVar : 1;
934
935
    /// Whether this local variable could be allocated in the return
936
    /// slot of its function, enabling the named return value optimization
937
    /// (NRVO).
938
    unsigned NRVOVariable : 1;
939
940
    /// Whether this variable is the for-range-declaration in a C++0x
941
    /// for-range statement.
942
    unsigned CXXForRangeDecl : 1;
943
944
    /// Whether this variable is the for-in loop declaration in Objective-C.
945
    unsigned ObjCForDecl : 1;
946
947
    /// Whether this variable is (C++1z) inline.
948
    unsigned IsInline : 1;
949
950
    /// Whether this variable has (C++1z) inline explicitly specified.
951
    unsigned IsInlineSpecified : 1;
952
953
    /// Whether this variable is (C++0x) constexpr.
954
    unsigned IsConstexpr : 1;
955
956
    /// Whether this variable is the implicit variable for a lambda
957
    /// init-capture.
958
    unsigned IsInitCapture : 1;
959
960
    /// Whether this local extern variable's previous declaration was
961
    /// declared in the same block scope. This controls whether we should merge
962
    /// the type of this declaration with its previous declaration.
963
    unsigned PreviousDeclInSameBlockScope : 1;
964
965
    /// Defines kind of the ImplicitParamDecl: 'this', 'self', 'vtt', '_cmd' or
966
    /// something else.
967
    unsigned ImplicitParamKind : 3;
968
969
    unsigned EscapingByref : 1;
970
  };
971
972
  union {
973
    unsigned AllBits;
974
    VarDeclBitfields VarDeclBits;
975
    ParmVarDeclBitfields ParmVarDeclBits;
976
    NonParmVarDeclBitfields NonParmVarDeclBits;
977
  };
978
979
  VarDecl(Kind DK, ASTContext &C, DeclContext *DC, SourceLocation StartLoc,
980
          SourceLocation IdLoc, IdentifierInfo *Id, QualType T,
981
          TypeSourceInfo *TInfo, StorageClass SC);
982
983
  using redeclarable_base = Redeclarable<VarDecl>;
984
985
8.44M
  VarDecl *getNextRedeclarationImpl() override {
986
8.44M
    return getNextRedeclaration();
987
8.44M
  }
988
989
21.7k
  VarDecl *getPreviousDeclImpl() override {
990
21.7k
    return getPreviousDecl();
991
21.7k
  }
992
993
38.6M
  VarDecl *getMostRecentDeclImpl() override {
994
38.6M
    return getMostRecentDecl();
995
38.6M
  }
996
997
public:
998
  using redecl_range = redeclarable_base::redecl_range;
999
  using redecl_iterator = redeclarable_base::redecl_iterator;
1000
1001
  using redeclarable_base::redecls_begin;
1002
  using redeclarable_base::redecls_end;
1003
  using redeclarable_base::redecls;
1004
  using redeclarable_base::getPreviousDecl;
1005
  using redeclarable_base::getMostRecentDecl;
1006
  using redeclarable_base::isFirstDecl;
1007
1008
  static VarDecl *Create(ASTContext &C, DeclContext *DC,
1009
                         SourceLocation StartLoc, SourceLocation IdLoc,
1010
                         IdentifierInfo *Id, QualType T, TypeSourceInfo *TInfo,
1011
                         StorageClass S);
1012
1013
  static VarDecl *CreateDeserialized(ASTContext &C, unsigned ID);
1014
1015
  SourceRange getSourceRange() const override LLVM_READONLY;
1016
1017
  /// Returns the storage class as written in the source. For the
1018
  /// computed linkage of symbol, see getLinkage.
1019
127M
  StorageClass getStorageClass() const {
1020
127M
    return (StorageClass) VarDeclBits.SClass;
1021
127M
  }
1022
  void setStorageClass(StorageClass SC);
1023
1024
327k
  void setTSCSpec(ThreadStorageClassSpecifier TSC) {
1025
327k
    VarDeclBits.TSCSpec = TSC;
1026
327k
    assert(VarDeclBits.TSCSpec == TSC && "truncation");
1027
327k
  }
1028
42.1M
  ThreadStorageClassSpecifier getTSCSpec() const {
1029
42.1M
    return static_cast<ThreadStorageClassSpecifier>(VarDeclBits.TSCSpec);
1030
42.1M
  }
1031
  TLSKind getTLSKind() const;
1032
1033
  /// Returns true if a variable with function scope is a non-static local
1034
  /// variable.
1035
48.8M
  bool hasLocalStorage() const {
1036
48.8M
    if (getStorageClass() == SC_None) {
1037
40.5M
      // OpenCL v1.2 s6.5.3: The __constant or constant address space name is
1038
40.5M
      // used to describe variables allocated in global memory and which are
1039
40.5M
      // accessed inside a kernel(s) as read-only variables. As such, variables
1040
40.5M
      // in constant address space cannot have local storage.
1041
40.5M
      if (getType().getAddressSpace() == LangAS::opencl_constant)
1042
1.12k
        return false;
1043
40.5M
      // Second check is for C++11 [dcl.stc]p4.
1044
40.5M
      return !isFileVarDecl() && 
getTSCSpec() == TSCS_unspecified34.8M
;
1045
40.5M
    }
1046
8.31M
1047
8.31M
    // Global Named Register (GNU extension)
1048
8.31M
    if (getStorageClass() == SC_Register && 
!isLocalVarDeclOrParm()103k
)
1049
814
      return false;
1050
8.31M
1051
8.31M
    // Return true for:  Auto, Register.
1052
8.31M
    // Return false for: Extern, Static, PrivateExtern, OpenCLWorkGroupLocal.
1053
8.31M
1054
8.31M
    return getStorageClass() >= SC_Auto;
1055
8.31M
  }
1056
1057
  /// Returns true if a variable with function scope is a static local
1058
  /// variable.
1059
8.25M
  bool isStaticLocal() const {
1060
8.25M
    return (getStorageClass() == SC_Static ||
1061
8.25M
            // C++11 [dcl.stc]p4
1062
8.25M
            
(7.01M
getStorageClass() == SC_None7.01M
&&
getTSCSpec() == TSCS_thread_local6.69M
))
1063
8.25M
      && 
!isFileVarDecl()1.23M
;
1064
8.25M
  }
1065
1066
  /// Returns true if a variable has extern or __private_extern__
1067
  /// storage.
1068
18.3M
  bool hasExternalStorage() const {
1069
18.3M
    return getStorageClass() == SC_Extern ||
1070
18.3M
           
getStorageClass() == SC_PrivateExtern17.5M
;
1071
18.3M
  }
1072
1073
  /// Returns true for all variables that do not have local storage.
1074
  ///
1075
  /// This includes all global variables as well as static variables declared
1076
  /// within a function.
1077
13.7M
  bool hasGlobalStorage() const { return !hasLocalStorage(); }
1078
1079
  /// Get the storage duration of this variable, per C++ [basic.stc].
1080
844k
  StorageDuration getStorageDuration() const {
1081
844k
    return hasLocalStorage() ? 
SD_Automatic824k
:
1082
844k
           
getTSCSpec() 20.6k
?
SD_Thread422
:
SD_Static20.2k
;
1083
844k
  }
1084
1085
  /// Compute the language linkage.
1086
  LanguageLinkage getLanguageLinkage() const;
1087
1088
  /// Determines whether this variable is a variable with external, C linkage.
1089
  bool isExternC() const;
1090
1091
  /// Determines whether this variable's context is, or is nested within,
1092
  /// a C++ extern "C" linkage spec.
1093
  bool isInExternCContext() const;
1094
1095
  /// Determines whether this variable's context is, or is nested within,
1096
  /// a C++ extern "C++" linkage spec.
1097
  bool isInExternCXXContext() const;
1098
1099
  /// Returns true for local variable declarations other than parameters.
1100
  /// Note that this includes static variables inside of functions. It also
1101
  /// includes variables inside blocks.
1102
  ///
1103
  ///   void foo() { int x; static int y; extern int z; }
1104
9.33M
  bool isLocalVarDecl() const {
1105
9.33M
    if (getKind() != Decl::Var && 
getKind() != Decl::Decomposition976k
)
1106
976k
      return false;
1107
8.35M
    if (const DeclContext *DC = getLexicalDeclContext())
1108
8.35M
      return DC->getRedeclContext()->isFunctionOrMethod();
1109
0
    return false;
1110
0
  }
1111
1112
  /// Similar to isLocalVarDecl but also includes parameters.
1113
186k
  bool isLocalVarDeclOrParm() const {
1114
186k
    return isLocalVarDecl() || 
getKind() == Decl::ParmVar87.9k
;
1115
186k
  }
1116
1117
  /// Similar to isLocalVarDecl, but excludes variables declared in blocks.
1118
1.98M
  bool isFunctionOrMethodVarDecl() const {
1119
1.98M
    if (getKind() != Decl::Var && 
getKind() != Decl::Decomposition65.4k
)
1120
65.4k
      return false;
1121
1.92M
    const DeclContext *DC = getLexicalDeclContext()->getRedeclContext();
1122
1.92M
    return DC->isFunctionOrMethod() && 
DC->getDeclKind() != Decl::Block97.7k
;
1123
1.92M
  }
1124
1125
  /// Determines whether this is a static data member.
1126
  ///
1127
  /// This will only be true in C++, and applies to, e.g., the
1128
  /// variable 'x' in:
1129
  /// \code
1130
  /// struct S {
1131
  ///   static int x;
1132
  /// };
1133
  /// \endcode
1134
213M
  bool isStaticDataMember() const {
1135
213M
    // If it wasn't static, it would be a FieldDecl.
1136
213M
    return getKind() != Decl::ParmVar && 
getDeclContext()->isRecord()191M
;
1137
213M
  }
1138
1139
  VarDecl *getCanonicalDecl() override;
1140
17.2M
  const VarDecl *getCanonicalDecl() const {
1141
17.2M
    return const_cast<VarDecl*>(this)->getCanonicalDecl();
1142
17.2M
  }
1143
1144
  enum DefinitionKind {
1145
    /// This declaration is only a declaration.
1146
    DeclarationOnly,
1147
1148
    /// This declaration is a tentative definition.
1149
    TentativeDefinition,
1150
1151
    /// This declaration is definitely a definition.
1152
    Definition
1153
  };
1154
1155
  /// Check whether this declaration is a definition. If this could be
1156
  /// a tentative definition (in C), don't check whether there's an overriding
1157
  /// definition.
1158
  DefinitionKind isThisDeclarationADefinition(ASTContext &) const;
1159
13.6M
  DefinitionKind isThisDeclarationADefinition() const {
1160
13.6M
    return isThisDeclarationADefinition(getASTContext());
1161
13.6M
  }
1162
1163
  /// Check whether this variable is defined in this translation unit.
1164
  DefinitionKind hasDefinition(ASTContext &) const;
1165
39.9k
  DefinitionKind hasDefinition() const {
1166
39.9k
    return hasDefinition(getASTContext());
1167
39.9k
  }
1168
1169
  /// Get the tentative definition that acts as the real definition in a TU.
1170
  /// Returns null if there is a proper definition available.
1171
  VarDecl *getActingDefinition();
1172
582
  const VarDecl *getActingDefinition() const {
1173
582
    return const_cast<VarDecl*>(this)->getActingDefinition();
1174
582
  }
1175
1176
  /// Get the real (not just tentative) definition for this declaration.
1177
  VarDecl *getDefinition(ASTContext &);
1178
6.83M
  const VarDecl *getDefinition(ASTContext &C) const {
1179
6.83M
    return const_cast<VarDecl*>(this)->getDefinition(C);
1180
6.83M
  }
1181
4.70M
  VarDecl *getDefinition() {
1182
4.70M
    return getDefinition(getASTContext());
1183
4.70M
  }
1184
4.83k
  const VarDecl *getDefinition() const {
1185
4.83k
    return const_cast<VarDecl*>(this)->getDefinition();
1186
4.83k
  }
1187
1188
  /// Determine whether this is or was instantiated from an out-of-line
1189
  /// definition of a static data member.
1190
  bool isOutOfLine() const override;
1191
1192
  /// Returns true for file scoped variable declaration.
1193
54.2M
  bool isFileVarDecl() const {
1194
54.2M
    Kind K = getKind();
1195
54.2M
    if (K == ParmVar || 
K == ImplicitParam45.7M
)
1196
9.14M
      return false;
1197
45.1M
1198
45.1M
    if (getLexicalDeclContext()->getRedeclContext()->isFileContext())
1199
8.53M
      return true;
1200
36.5M
1201
36.5M
    if (isStaticDataMember())
1202
1.82M
      return true;
1203
34.7M
1204
34.7M
    return false;
1205
34.7M
  }
1206
1207
  /// Get the initializer for this variable, no matter which
1208
  /// declaration it is attached to.
1209
2.13M
  const Expr *getAnyInitializer() const {
1210
2.13M
    const VarDecl *D;
1211
2.13M
    return getAnyInitializer(D);
1212
2.13M
  }
1213
1214
  /// Get the initializer for this variable, no matter which
1215
  /// declaration it is attached to. Also get that declaration.
1216
  const Expr *getAnyInitializer(const VarDecl *&D) const;
1217
1218
  bool hasInit() const;
1219
3.44M
  const Expr *getInit() const {
1220
3.44M
    return const_cast<VarDecl *>(this)->getInit();
1221
3.44M
  }
1222
  Expr *getInit();
1223
1224
  /// Retrieve the address of the initializer expression.
1225
  Stmt **getInitAddress();
1226
1227
  void setInit(Expr *I);
1228
1229
  /// Determine whether this variable's value can be used in a
1230
  /// constant expression, according to the relevant language standard.
1231
  /// This only checks properties of the declaration, and does not check
1232
  /// whether the initializer is in fact a constant expression.
1233
  bool isUsableInConstantExpressions(ASTContext &C) const;
1234
1235
  EvaluatedStmt *ensureEvaluatedStmt() const;
1236
1237
  /// Attempt to evaluate the value of the initializer attached to this
1238
  /// declaration, and produce notes explaining why it cannot be evaluated or is
1239
  /// not a constant expression. Returns a pointer to the value if evaluation
1240
  /// succeeded, 0 otherwise.
1241
  APValue *evaluateValue() const;
1242
  APValue *evaluateValue(SmallVectorImpl<PartialDiagnosticAt> &Notes) const;
1243
1244
  /// Return the already-evaluated value of this variable's
1245
  /// initializer, or NULL if the value is not yet known. Returns pointer
1246
  /// to untyped APValue if the value could not be evaluated.
1247
  APValue *getEvaluatedValue() const;
1248
1249
  /// Determines whether it is already known whether the
1250
  /// initializer is an integral constant expression or not.
1251
  bool isInitKnownICE() const;
1252
1253
  /// Determines whether the initializer is an integral constant
1254
  /// expression, or in C++11, whether the initializer is a constant
1255
  /// expression.
1256
  ///
1257
  /// \pre isInitKnownICE()
1258
  bool isInitICE() const;
1259
1260
  /// Determine whether the value of the initializer attached to this
1261
  /// declaration is an integral constant expression.
1262
  bool checkInitIsICE() const;
1263
1264
492k
  void setInitStyle(InitializationStyle Style) {
1265
492k
    VarDeclBits.InitStyle = Style;
1266
492k
  }
1267
1268
  /// The style of initialization for this declaration.
1269
  ///
1270
  /// C-style initialization is "int x = 1;". Call-style initialization is
1271
  /// a C++98 direct-initializer, e.g. "int x(1);". The Init expression will be
1272
  /// the expression inside the parens or a "ClassType(a,b,c)" class constructor
1273
  /// expression for class types. List-style initialization is C++11 syntax,
1274
  /// e.g. "int x{1};". Clients can distinguish between different forms of
1275
  /// initialization by checking this value. In particular, "int x = {1};" is
1276
  /// C-style, "int x({1})" is call-style, and "int x{1};" is list-style; the
1277
  /// Init expression in all three cases is an InitListExpr.
1278
1.45M
  InitializationStyle getInitStyle() const {
1279
1.45M
    return static_cast<InitializationStyle>(VarDeclBits.InitStyle);
1280
1.45M
  }
1281
1282
  /// Whether the initializer is a direct-initializer (list or call).
1283
294k
  bool isDirectInit() const {
1284
294k
    return getInitStyle() != CInit;
1285
294k
  }
1286
1287
  /// If this definition should pretend to be a declaration.
1288
36.3M
  bool isThisDeclarationADemotedDefinition() const {
1289
36.3M
    return isa<ParmVarDecl>(this) ? 
false6.18M
:
1290
36.3M
      
NonParmVarDeclBits.IsThisDeclarationADemotedDefinition30.1M
;
1291
36.3M
  }
1292
1293
  /// This is a definition which should be demoted to a declaration.
1294
  ///
1295
  /// In some cases (mostly module merging) we can end up with two visible
1296
  /// definitions one of which needs to be demoted to a declaration to keep
1297
  /// the AST invariants.
1298
26
  void demoteThisDefinitionToDeclaration() {
1299
26
    assert(isThisDeclarationADefinition() && "Not a definition!");
1300
26
    assert(!isa<ParmVarDecl>(this) && "Cannot demote ParmVarDecls!");
1301
26
    NonParmVarDeclBits.IsThisDeclarationADemotedDefinition = 1;
1302
26
  }
1303
1304
  /// Determine whether this variable is the exception variable in a
1305
  /// C++ catch statememt or an Objective-C \@catch statement.
1306
2.24M
  bool isExceptionVariable() const {
1307
2.24M
    return isa<ParmVarDecl>(this) ? 
false3.55k
:
NonParmVarDeclBits.ExceptionVar2.24M
;
1308
2.24M
  }
1309
916
  void setExceptionVariable(bool EV) {
1310
916
    assert(!isa<ParmVarDecl>(this));
1311
916
    NonParmVarDeclBits.ExceptionVar = EV;
1312
916
  }
1313
1314
  /// Determine whether this local variable can be used with the named
1315
  /// return value optimization (NRVO).
1316
  ///
1317
  /// The named return value optimization (NRVO) works by marking certain
1318
  /// non-volatile local variables of class type as NRVO objects. These
1319
  /// locals can be allocated within the return slot of their containing
1320
  /// function, in which case there is no need to copy the object to the
1321
  /// return slot when returning from the function. Within the function body,
1322
  /// each return that returns the NRVO object will have this variable as its
1323
  /// NRVO candidate.
1324
899k
  bool isNRVOVariable() const {
1325
899k
    return isa<ParmVarDecl>(this) ? 
false1.17k
:
NonParmVarDeclBits.NRVOVariable898k
;
1326
899k
  }
1327
38.6k
  void setNRVOVariable(bool NRVO) {
1328
38.6k
    assert(!isa<ParmVarDecl>(this));
1329
38.6k
    NonParmVarDeclBits.NRVOVariable = NRVO;
1330
38.6k
  }
1331
1332
  /// Determine whether this variable is the for-range-declaration in
1333
  /// a C++0x for-range statement.
1334
509k
  bool isCXXForRangeDecl() const {
1335
509k
    return isa<ParmVarDecl>(this) ? 
false0
: NonParmVarDeclBits.CXXForRangeDecl;
1336
509k
  }
1337
329k
  void setCXXForRangeDecl(bool FRD) {
1338
329k
    assert(!isa<ParmVarDecl>(this));
1339
329k
    NonParmVarDeclBits.CXXForRangeDecl = FRD;
1340
329k
  }
1341
1342
  /// Determine whether this variable is a for-loop declaration for a
1343
  /// for-in statement in Objective-C.
1344
475k
  bool isObjCForDecl() const {
1345
475k
    return NonParmVarDeclBits.ObjCForDecl;
1346
475k
  }
1347
1348
326k
  void setObjCForDecl(bool FRD) {
1349
326k
    NonParmVarDeclBits.ObjCForDecl = FRD;
1350
326k
  }
1351
1352
  /// Determine whether this variable is an ARC pseudo-__strong variable. A
1353
  /// pseudo-__strong variable has a __strong-qualified type but does not
1354
  /// actually retain the object written into it. Generally such variables are
1355
  /// also 'const' for safety. There are 3 cases where this will be set, 1) if
1356
  /// the variable is annotated with the objc_externally_retained attribute, 2)
1357
  /// if its 'self' in a non-init method, or 3) if its the variable in an for-in
1358
  /// loop.
1359
275k
  bool isARCPseudoStrong() const { return VarDeclBits.ARCPseudoStrong; }
1360
2.09k
  void setARCPseudoStrong(bool PS) { VarDeclBits.ARCPseudoStrong = PS; }
1361
1362
  /// Whether this variable is (C++1z) inline.
1363
19.7M
  bool isInline() const {
1364
19.7M
    return isa<ParmVarDecl>(this) ? 
false1.17k
:
NonParmVarDeclBits.IsInline19.7M
;
1365
19.7M
  }
1366
455k
  bool isInlineSpecified() const {
1367
455k
    return isa<ParmVarDecl>(this) ? 
false0
1368
455k
                                  : NonParmVarDeclBits.IsInlineSpecified;
1369
455k
  }
1370
243
  void setInlineSpecified() {
1371
243
    assert(!isa<ParmVarDecl>(this));
1372
243
    NonParmVarDeclBits.IsInline = true;
1373
243
    NonParmVarDeclBits.IsInlineSpecified = true;
1374
243
  }
1375
194
  void setImplicitlyInline() {
1376
194
    assert(!isa<ParmVarDecl>(this));
1377
194
    NonParmVarDeclBits.IsInline = true;
1378
194
  }
1379
1380
  /// Whether this variable is (C++11) constexpr.
1381
18.7M
  bool isConstexpr() const {
1382
18.7M
    return isa<ParmVarDecl>(this) ? 
false1.71M
:
NonParmVarDeclBits.IsConstexpr17.0M
;
1383
18.7M
  }
1384
504k
  void setConstexpr(bool IC) {
1385
504k
    assert(!isa<ParmVarDecl>(this));
1386
504k
    NonParmVarDeclBits.IsConstexpr = IC;
1387
504k
  }
1388
1389
  /// Whether this variable is the implicit variable for a lambda init-capture.
1390
39.0M
  bool isInitCapture() const {
1391
39.0M
    return isa<ParmVarDecl>(this) ? 
false19.4M
:
NonParmVarDeclBits.IsInitCapture19.5M
;
1392
39.0M
  }
1393
327k
  void setInitCapture(bool IC) {
1394
327k
    assert(!isa<ParmVarDecl>(this));
1395
327k
    NonParmVarDeclBits.IsInitCapture = IC;
1396
327k
  }
1397
1398
  /// Whether this local extern variable declaration's previous declaration
1399
  /// was declared in the same block scope. Only correct in C++.
1400
530k
  bool isPreviousDeclInSameBlockScope() const {
1401
530k
    return isa<ParmVarDecl>(this)
1402
530k
               ? 
false0
1403
530k
               : NonParmVarDeclBits.PreviousDeclInSameBlockScope;
1404
530k
  }
1405
327k
  void setPreviousDeclInSameBlockScope(bool Same) {
1406
327k
    assert(!isa<ParmVarDecl>(this));
1407
327k
    NonParmVarDeclBits.PreviousDeclInSameBlockScope = Same;
1408
327k
  }
1409
1410
  /// Indicates the capture is a __block variable that is captured by a block
1411
  /// that can potentially escape (a block for which BlockDecl::doesNotEscape
1412
  /// returns false).
1413
  bool isEscapingByref() const;
1414
1415
  /// Indicates the capture is a __block variable that is never captured by an
1416
  /// escaping block.
1417
  bool isNonEscapingByref() const;
1418
1419
678
  void setEscapingByref() {
1420
678
    NonParmVarDeclBits.EscapingByref = true;
1421
678
  }
1422
1423
  /// Retrieve the variable declaration from which this variable could
1424
  /// be instantiated, if it is an instantiation (rather than a non-template).
1425
  VarDecl *getTemplateInstantiationPattern() const;
1426
1427
  /// If this variable is an instantiated static data member of a
1428
  /// class template specialization, returns the templated static data member
1429
  /// from which it was instantiated.
1430
  VarDecl *getInstantiatedFromStaticDataMember() const;
1431
1432
  /// If this variable is an instantiation of a variable template or a
1433
  /// static data member of a class template, determine what kind of
1434
  /// template specialization or instantiation this is.
1435
  TemplateSpecializationKind getTemplateSpecializationKind() const;
1436
1437
  /// If this variable is an instantiation of a variable template or a
1438
  /// static data member of a class template, determine its point of
1439
  /// instantiation.
1440
  SourceLocation getPointOfInstantiation() const;
1441
1442
  /// If this variable is an instantiation of a static data member of a
1443
  /// class template specialization, retrieves the member specialization
1444
  /// information.
1445
  MemberSpecializationInfo *getMemberSpecializationInfo() const;
1446
1447
  /// For a static data member that was instantiated from a static
1448
  /// data member of a class template, set the template specialiation kind.
1449
  void setTemplateSpecializationKind(TemplateSpecializationKind TSK,
1450
                        SourceLocation PointOfInstantiation = SourceLocation());
1451
1452
  /// Specify that this variable is an instantiation of the
1453
  /// static data member VD.
1454
  void setInstantiationOfStaticDataMember(VarDecl *VD,
1455
                                          TemplateSpecializationKind TSK);
1456
1457
  /// Retrieves the variable template that is described by this
1458
  /// variable declaration.
1459
  ///
1460
  /// Every variable template is represented as a VarTemplateDecl and a
1461
  /// VarDecl. The former contains template properties (such as
1462
  /// the template parameter lists) while the latter contains the
1463
  /// actual description of the template's
1464
  /// contents. VarTemplateDecl::getTemplatedDecl() retrieves the
1465
  /// VarDecl that from a VarTemplateDecl, while
1466
  /// getDescribedVarTemplate() retrieves the VarTemplateDecl from
1467
  /// a VarDecl.
1468
  VarTemplateDecl *getDescribedVarTemplate() const;
1469
1470
  void setDescribedVarTemplate(VarTemplateDecl *Template);
1471
1472
  // Is this variable known to have a definition somewhere in the complete
1473
  // program? This may be true even if the declaration has internal linkage and
1474
  // has no definition within this source file.
1475
  bool isKnownToBeDefined() const;
1476
1477
  /// Do we need to emit an exit-time destructor for this variable?
1478
  bool isNoDestroy(const ASTContext &) const;
1479
1480
  // Implement isa/cast/dyncast/etc.
1481
243M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
1482
243M
  static bool classofKind(Kind K) { return K >= firstVar && 
K <= lastVar125M
; }
1483
};
1484
1485
class ImplicitParamDecl : public VarDecl {
1486
  void anchor() override;
1487
1488
public:
1489
  /// Defines the kind of the implicit parameter: is this an implicit parameter
1490
  /// with pointer to 'this', 'self', '_cmd', virtual table pointers, captured
1491
  /// context or something else.
1492
  enum ImplicitParamKind : unsigned {
1493
    /// Parameter for Objective-C 'self' argument
1494
    ObjCSelf,
1495
1496
    /// Parameter for Objective-C '_cmd' argument
1497
    ObjCCmd,
1498
1499
    /// Parameter for C++ 'this' argument
1500
    CXXThis,
1501
1502
    /// Parameter for C++ virtual table pointers
1503
    CXXVTT,
1504
1505
    /// Parameter for captured context
1506
    CapturedContext,
1507
1508
    /// Other implicit parameter
1509
    Other,
1510
  };
1511
1512
  /// Create implicit parameter.
1513
  static ImplicitParamDecl *Create(ASTContext &C, DeclContext *DC,
1514
                                   SourceLocation IdLoc, IdentifierInfo *Id,
1515
                                   QualType T, ImplicitParamKind ParamKind);
1516
  static ImplicitParamDecl *Create(ASTContext &C, QualType T,
1517
                                   ImplicitParamKind ParamKind);
1518
1519
  static ImplicitParamDecl *CreateDeserialized(ASTContext &C, unsigned ID);
1520
1521
  ImplicitParamDecl(ASTContext &C, DeclContext *DC, SourceLocation IdLoc,
1522
                    IdentifierInfo *Id, QualType Type,
1523
                    ImplicitParamKind ParamKind)
1524
      : VarDecl(ImplicitParam, C, DC, IdLoc, IdLoc, Id, Type,
1525
1.24M
                /*TInfo=*/nullptr, SC_None) {
1526
1.24M
    NonParmVarDeclBits.ImplicitParamKind = ParamKind;
1527
1.24M
    setImplicit();
1528
1.24M
  }
1529
1530
  ImplicitParamDecl(ASTContext &C, QualType Type, ImplicitParamKind ParamKind)
1531
      : VarDecl(ImplicitParam, C, /*DC=*/nullptr, SourceLocation(),
1532
                SourceLocation(), /*Id=*/nullptr, Type,
1533
68.8k
                /*TInfo=*/nullptr, SC_None) {
1534
68.8k
    NonParmVarDeclBits.ImplicitParamKind = ParamKind;
1535
68.8k
    setImplicit();
1536
68.8k
  }
1537
1538
  /// Returns the implicit parameter kind.
1539
69.6k
  ImplicitParamKind getParameterKind() const {
1540
69.6k
    return static_cast<ImplicitParamKind>(NonParmVarDeclBits.ImplicitParamKind);
1541
69.6k
  }
1542
1543
  // Implement isa/cast/dyncast/etc.
1544
1.07M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
1545
1.07M
  static bool classofKind(Kind K) { return K == ImplicitParam; }
1546
};
1547
1548
/// Represents a parameter to a function.
1549
class ParmVarDecl : public VarDecl {
1550
public:
1551
  enum { MaxFunctionScopeDepth = 255 };
1552
  enum { MaxFunctionScopeIndex = 255 };
1553
1554
protected:
1555
  ParmVarDecl(Kind DK, ASTContext &C, DeclContext *DC, SourceLocation StartLoc,
1556
              SourceLocation IdLoc, IdentifierInfo *Id, QualType T,
1557
              TypeSourceInfo *TInfo, StorageClass S, Expr *DefArg)
1558
13.6M
      : VarDecl(DK, C, DC, StartLoc, IdLoc, Id, T, TInfo, S) {
1559
13.6M
    assert(ParmVarDeclBits.HasInheritedDefaultArg == false);
1560
13.6M
    assert(ParmVarDeclBits.DefaultArgKind == DAK_None);
1561
13.6M
    assert(ParmVarDeclBits.IsKNRPromoted == false);
1562
13.6M
    assert(ParmVarDeclBits.IsObjCMethodParam == false);
1563
13.6M
    setDefaultArg(DefArg);
1564
13.6M
  }
1565
1566
public:
1567
  static ParmVarDecl *Create(ASTContext &C, DeclContext *DC,
1568
                             SourceLocation StartLoc,
1569
                             SourceLocation IdLoc, IdentifierInfo *Id,
1570
                             QualType T, TypeSourceInfo *TInfo,
1571
                             StorageClass S, Expr *DefArg);
1572
1573
  static ParmVarDecl *CreateDeserialized(ASTContext &C, unsigned ID);
1574
1575
  SourceRange getSourceRange() const override LLVM_READONLY;
1576
1577
65.7k
  void setObjCMethodScopeInfo(unsigned parameterIndex) {
1578
65.7k
    ParmVarDeclBits.IsObjCMethodParam = true;
1579
65.7k
    setParameterIndex(parameterIndex);
1580
65.7k
  }
1581
1582
13.2M
  void setScopeInfo(unsigned scopeDepth, unsigned parameterIndex) {
1583
13.2M
    assert(!ParmVarDeclBits.IsObjCMethodParam);
1584
13.2M
1585
13.2M
    ParmVarDeclBits.ScopeDepthOrObjCQuals = scopeDepth;
1586
13.2M
    assert(ParmVarDeclBits.ScopeDepthOrObjCQuals == scopeDepth
1587
13.2M
           && "truncation!");
1588
13.2M
1589
13.2M
    setParameterIndex(parameterIndex);
1590
13.2M
  }
1591
1592
146k
  bool isObjCMethodParameter() const {
1593
146k
    return ParmVarDeclBits.IsObjCMethodParam;
1594
146k
  }
1595
1596
2.69M
  unsigned getFunctionScopeDepth() const {
1597
2.69M
    if (ParmVarDeclBits.IsObjCMethodParam) 
return 0263
;
1598
2.69M
    return ParmVarDeclBits.ScopeDepthOrObjCQuals;
1599
2.69M
  }
1600
1601
  /// Returns the index of this parameter in its prototype or method scope.
1602
8.44M
  unsigned getFunctionScopeIndex() const {
1603
8.44M
    return getParameterIndex();
1604
8.44M
  }
1605
1606
248k
  ObjCDeclQualifier getObjCDeclQualifier() const {
1607
248k
    if (!ParmVarDeclBits.IsObjCMethodParam) 
return OBJC_TQ_None241k
;
1608
7.43k
    return ObjCDeclQualifier(ParmVarDeclBits.ScopeDepthOrObjCQuals);
1609
7.43k
  }
1610
65.6k
  void setObjCDeclQualifier(ObjCDeclQualifier QTVal) {
1611
65.6k
    assert(ParmVarDeclBits.IsObjCMethodParam);
1612
65.6k
    ParmVarDeclBits.ScopeDepthOrObjCQuals = QTVal;
1613
65.6k
  }
1614
1615
  /// True if the value passed to this parameter must undergo
1616
  /// K&R-style default argument promotion:
1617
  ///
1618
  /// C99 6.5.2.2.
1619
  ///   If the expression that denotes the called function has a type
1620
  ///   that does not include a prototype, the integer promotions are
1621
  ///   performed on each argument, and arguments that have type float
1622
  ///   are promoted to double.
1623
654k
  bool isKNRPromoted() const {
1624
654k
    return ParmVarDeclBits.IsKNRPromoted;
1625
654k
  }
1626
599
  void setKNRPromoted(bool promoted) {
1627
599
    ParmVarDeclBits.IsKNRPromoted = promoted;
1628
599
  }
1629
1630
  Expr *getDefaultArg();
1631
4.16k
  const Expr *getDefaultArg() const {
1632
4.16k
    return const_cast<ParmVarDecl *>(this)->getDefaultArg();
1633
4.16k
  }
1634
1635
  void setDefaultArg(Expr *defarg);
1636
1637
  /// Retrieve the source range that covers the entire default
1638
  /// argument.
1639
  SourceRange getDefaultArgRange() const;
1640
  void setUninstantiatedDefaultArg(Expr *arg);
1641
  Expr *getUninstantiatedDefaultArg();
1642
1
  const Expr *getUninstantiatedDefaultArg() const {
1643
1
    return const_cast<ParmVarDecl *>(this)->getUninstantiatedDefaultArg();
1644
1
  }
1645
1646
  /// Determines whether this parameter has a default argument,
1647
  /// either parsed or not.
1648
  bool hasDefaultArg() const;
1649
1650
  /// Determines whether this parameter has a default argument that has not
1651
  /// yet been parsed. This will occur during the processing of a C++ class
1652
  /// whose member functions have default arguments, e.g.,
1653
  /// @code
1654
  ///   class X {
1655
  ///   public:
1656
  ///     void f(int x = 17); // x has an unparsed default argument now
1657
  ///   }; // x has a regular default argument now
1658
  /// @endcode
1659
45.5M
  bool hasUnparsedDefaultArg() const {
1660
45.5M
    return ParmVarDeclBits.DefaultArgKind == DAK_Unparsed;
1661
45.5M
  }
1662
1663
43.6M
  bool hasUninstantiatedDefaultArg() const {
1664
43.6M
    return ParmVarDeclBits.DefaultArgKind == DAK_Uninstantiated;
1665
43.6M
  }
1666
1667
  /// Specify that this parameter has an unparsed default argument.
1668
  /// The argument will be replaced with a real default argument via
1669
  /// setDefaultArg when the class definition enclosing the function
1670
  /// declaration that owns this default argument is completed.
1671
89.8k
  void setUnparsedDefaultArg() {
1672
89.8k
    ParmVarDeclBits.DefaultArgKind = DAK_Unparsed;
1673
89.8k
  }
1674
1675
2.64M
  bool hasInheritedDefaultArg() const {
1676
2.64M
    return ParmVarDeclBits.HasInheritedDefaultArg;
1677
2.64M
  }
1678
1679
2.39M
  void setHasInheritedDefaultArg(bool I = true) {
1680
2.39M
    ParmVarDeclBits.HasInheritedDefaultArg = I;
1681
2.39M
  }
1682
1683
  QualType getOriginalType() const;
1684
1685
  /// Determine whether this parameter is actually a function
1686
  /// parameter pack.
1687
  bool isParameterPack() const;
1688
1689
  /// Sets the function declaration that owns this
1690
  /// ParmVarDecl. Since ParmVarDecls are often created before the
1691
  /// FunctionDecls that own them, this routine is required to update
1692
  /// the DeclContext appropriately.
1693
7.07M
  void setOwningFunction(DeclContext *FD) { setDeclContext(FD); }
1694
1695
  // Implement isa/cast/dyncast/etc.
1696
267M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
1697
267M
  static bool classofKind(Kind K) { return K == ParmVar; }
1698
1699
private:
1700
  enum { ParameterIndexSentinel = (1 << NumParameterIndexBits) - 1 };
1701
1702
13.2M
  void setParameterIndex(unsigned parameterIndex) {
1703
13.2M
    if (parameterIndex >= ParameterIndexSentinel) {
1704
47
      setParameterIndexLarge(parameterIndex);
1705
47
      return;
1706
47
    }
1707
13.2M
1708
13.2M
    ParmVarDeclBits.ParameterIndex = parameterIndex;
1709
13.2M
    assert(ParmVarDeclBits.ParameterIndex == parameterIndex && "truncation!");
1710
13.2M
  }
1711
8.44M
  unsigned getParameterIndex() const {
1712
8.44M
    unsigned d = ParmVarDeclBits.ParameterIndex;
1713
8.44M
    return d == ParameterIndexSentinel ? 
getParameterIndexLarge()2
:
d8.44M
;
1714
8.44M
  }
1715
1716
  void setParameterIndexLarge(unsigned parameterIndex);
1717
  unsigned getParameterIndexLarge() const;
1718
};
1719
1720
enum class MultiVersionKind {
1721
  None,
1722
  Target,
1723
  CPUSpecific,
1724
  CPUDispatch
1725
};
1726
1727
/// Represents a function declaration or definition.
1728
///
1729
/// Since a given function can be declared several times in a program,
1730
/// there may be several FunctionDecls that correspond to that
1731
/// function. Only one of those FunctionDecls will be found when
1732
/// traversing the list of declarations in the context of the
1733
/// FunctionDecl (e.g., the translation unit); this FunctionDecl
1734
/// contains all of the information known about the function. Other,
1735
/// previous declarations of the function are available via the
1736
/// getPreviousDecl() chain.
1737
class FunctionDecl : public DeclaratorDecl,
1738
                     public DeclContext,
1739
                     public Redeclarable<FunctionDecl> {
1740
  // This class stores some data in DeclContext::FunctionDeclBits
1741
  // to save some space. Use the provided accessors to access it.
1742
public:
1743
  /// The kind of templated function a FunctionDecl can be.
1744
  enum TemplatedKind {
1745
    TK_NonTemplate,
1746
    TK_FunctionTemplate,
1747
    TK_MemberSpecialization,
1748
    TK_FunctionTemplateSpecialization,
1749
    TK_DependentFunctionTemplateSpecialization
1750
  };
1751
1752
private:
1753
  /// A new[]'d array of pointers to VarDecls for the formal
1754
  /// parameters of this function.  This is null if a prototype or if there are
1755
  /// no formals.
1756
  ParmVarDecl **ParamInfo = nullptr;
1757
1758
  LazyDeclStmtPtr Body;
1759
1760
  unsigned ODRHash;
1761
1762
  /// End part of this FunctionDecl's source range.
1763
  ///
1764
  /// We could compute the full range in getSourceRange(). However, when we're
1765
  /// dealing with a function definition deserialized from a PCH/AST file,
1766
  /// we can only compute the full range once the function body has been
1767
  /// de-serialized, so it's far better to have the (sometimes-redundant)
1768
  /// EndRangeLoc.
1769
  SourceLocation EndRangeLoc;
1770
1771
  /// The template or declaration that this declaration
1772
  /// describes or was instantiated from, respectively.
1773
  ///
1774
  /// For non-templates, this value will be NULL. For function
1775
  /// declarations that describe a function template, this will be a
1776
  /// pointer to a FunctionTemplateDecl. For member functions
1777
  /// of class template specializations, this will be a MemberSpecializationInfo
1778
  /// pointer containing information about the specialization.
1779
  /// For function template specializations, this will be a
1780
  /// FunctionTemplateSpecializationInfo, which contains information about
1781
  /// the template being specialized and the template arguments involved in
1782
  /// that specialization.
1783
  llvm::PointerUnion4<FunctionTemplateDecl *,
1784
                      MemberSpecializationInfo *,
1785
                      FunctionTemplateSpecializationInfo *,
1786
                      DependentFunctionTemplateSpecializationInfo *>
1787
    TemplateOrSpecialization;
1788
1789
  /// Provides source/type location info for the declaration name embedded in
1790
  /// the DeclaratorDecl base class.
1791
  DeclarationNameLoc DNLoc;
1792
1793
  /// Specify that this function declaration is actually a function
1794
  /// template specialization.
1795
  ///
1796
  /// \param C the ASTContext.
1797
  ///
1798
  /// \param Template the function template that this function template
1799
  /// specialization specializes.
1800
  ///
1801
  /// \param TemplateArgs the template arguments that produced this
1802
  /// function template specialization from the template.
1803
  ///
1804
  /// \param InsertPos If non-NULL, the position in the function template
1805
  /// specialization set where the function template specialization data will
1806
  /// be inserted.
1807
  ///
1808
  /// \param TSK the kind of template specialization this is.
1809
  ///
1810
  /// \param TemplateArgsAsWritten location info of template arguments.
1811
  ///
1812
  /// \param PointOfInstantiation point at which the function template
1813
  /// specialization was first instantiated.
1814
  void setFunctionTemplateSpecialization(ASTContext &C,
1815
                                         FunctionTemplateDecl *Template,
1816
                                       const TemplateArgumentList *TemplateArgs,
1817
                                         void *InsertPos,
1818
                                         TemplateSpecializationKind TSK,
1819
                          const TemplateArgumentListInfo *TemplateArgsAsWritten,
1820
                                         SourceLocation PointOfInstantiation);
1821
1822
  /// Specify that this record is an instantiation of the
1823
  /// member function FD.
1824
  void setInstantiationOfMemberFunction(ASTContext &C, FunctionDecl *FD,
1825
                                        TemplateSpecializationKind TSK);
1826
1827
  void setParams(ASTContext &C, ArrayRef<ParmVarDecl *> NewParamInfo);
1828
1829
  // This is unfortunately needed because ASTDeclWriter::VisitFunctionDecl
1830
  // need to access this bit but we want to avoid making ASTDeclWriter
1831
  // a friend of FunctionDeclBitfields just for this.
1832
95.6k
  bool isDeletedBit() const { return FunctionDeclBits.IsDeleted; }
1833
1834
  /// Whether an ODRHash has been stored.
1835
104k
  bool hasODRHash() const { return FunctionDeclBits.HasODRHash; }
1836
1837
  /// State that an ODRHash has been stored.
1838
118k
  void setHasODRHash(bool B = true) { FunctionDeclBits.HasODRHash = B; }
1839
1840
protected:
1841
  FunctionDecl(Kind DK, ASTContext &C, DeclContext *DC, SourceLocation StartLoc,
1842
               const DeclarationNameInfo &NameInfo, QualType T,
1843
               TypeSourceInfo *TInfo, StorageClass S, bool isInlineSpecified,
1844
               bool isConstexprSpecified);
1845
1846
  using redeclarable_base = Redeclarable<FunctionDecl>;
1847
1848
1.96M
  FunctionDecl *getNextRedeclarationImpl() override {
1849
1.96M
    return getNextRedeclaration();
1850
1.96M
  }
1851
1852
3.85M
  FunctionDecl *getPreviousDeclImpl() override {
1853
3.85M
    return getPreviousDecl();
1854
3.85M
  }
1855
1856
25.8M
  FunctionDecl *getMostRecentDeclImpl() override {
1857
25.8M
    return getMostRecentDecl();
1858
25.8M
  }
1859
1860
public:
1861
  friend class ASTDeclReader;
1862
  friend class ASTDeclWriter;
1863
1864
  using redecl_range = redeclarable_base::redecl_range;
1865
  using redecl_iterator = redeclarable_base::redecl_iterator;
1866
1867
  using redeclarable_base::redecls_begin;
1868
  using redeclarable_base::redecls_end;
1869
  using redeclarable_base::redecls;
1870
  using redeclarable_base::getPreviousDecl;
1871
  using redeclarable_base::getMostRecentDecl;
1872
  using redeclarable_base::isFirstDecl;
1873
1874
  static FunctionDecl *Create(ASTContext &C, DeclContext *DC,
1875
                              SourceLocation StartLoc, SourceLocation NLoc,
1876
                              DeclarationName N, QualType T,
1877
                              TypeSourceInfo *TInfo,
1878
                              StorageClass SC,
1879
                              bool isInlineSpecified = false,
1880
                              bool hasWrittenPrototype = true,
1881
546k
                              bool isConstexprSpecified = false) {
1882
546k
    DeclarationNameInfo NameInfo(N, NLoc);
1883
546k
    return FunctionDecl::Create(C, DC, StartLoc, NameInfo, T, TInfo,
1884
546k
                                SC,
1885
546k
                                isInlineSpecified, hasWrittenPrototype,
1886
546k
                                isConstexprSpecified);
1887
546k
  }
1888
1889
  static FunctionDecl *Create(ASTContext &C, DeclContext *DC,
1890
                              SourceLocation StartLoc,
1891
                              const DeclarationNameInfo &NameInfo,
1892
                              QualType T, TypeSourceInfo *TInfo,
1893
                              StorageClass SC,
1894
                              bool isInlineSpecified,
1895
                              bool hasWrittenPrototype,
1896
                              bool isConstexprSpecified = false);
1897
1898
  static FunctionDecl *CreateDeserialized(ASTContext &C, unsigned ID);
1899
1900
1.80M
  DeclarationNameInfo getNameInfo() const {
1901
1.80M
    return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc);
1902
1.80M
  }
1903
1904
  void getNameForDiagnostic(raw_ostream &OS, const PrintingPolicy &Policy,
1905
                            bool Qualified) const override;
1906
1907
7.31M
  void setRangeEnd(SourceLocation E) { EndRangeLoc = E; }
1908
1909
  SourceRange getSourceRange() const override LLVM_READONLY;
1910
1911
  // Function definitions.
1912
  //
1913
  // A function declaration may be:
1914
  // - a non defining declaration,
1915
  // - a definition. A function may be defined because:
1916
  //   - it has a body, or will have it in the case of late parsing.
1917
  //   - it has an uninstantiated body. The body does not exist because the
1918
  //     function is not used yet, but the declaration is considered a
1919
  //     definition and does not allow other definition of this function.
1920
  //   - it does not have a user specified body, but it does not allow
1921
  //     redefinition, because it is deleted/defaulted or is defined through
1922
  //     some other mechanism (alias, ifunc).
1923
1924
  /// Returns true if the function has a body.
1925
  ///
1926
  /// The function body might be in any of the (re-)declarations of this
1927
  /// function. The variant that accepts a FunctionDecl pointer will set that
1928
  /// function declaration to the actual declaration containing the body (if
1929
  /// there is one).
1930
  bool hasBody(const FunctionDecl *&Definition) const;
1931
1932
909k
  bool hasBody() const override {
1933
909k
    const FunctionDecl* Definition;
1934
909k
    return hasBody(Definition);
1935
909k
  }
1936
1937
  /// Returns whether the function has a trivial body that does not require any
1938
  /// specific codegen.
1939
  bool hasTrivialBody() const;
1940
1941
  /// Returns true if the function has a definition that does not need to be
1942
  /// instantiated.
1943
  ///
1944
  /// The variant that accepts a FunctionDecl pointer will set that function
1945
  /// declaration to the declaration that is a definition (if there is one).
1946
  bool isDefined(const FunctionDecl *&Definition) const;
1947
1948
3.46M
  virtual bool isDefined() const {
1949
3.46M
    const FunctionDecl* Definition;
1950
3.46M
    return isDefined(Definition);
1951
3.46M
  }
1952
1953
  /// Get the definition for this declaration.
1954
4.59M
  FunctionDecl *getDefinition() {
1955
4.59M
    const FunctionDecl *Definition;
1956
4.59M
    if (isDefined(Definition))
1957
4.36M
      return const_cast<FunctionDecl *>(Definition);
1958
229k
    return nullptr;
1959
229k
  }
1960
418k
  const FunctionDecl *getDefinition() const {
1961
418k
    return const_cast<FunctionDecl *>(this)->getDefinition();
1962
418k
  }
1963
1964
  /// Retrieve the body (definition) of the function. The function body might be
1965
  /// in any of the (re-)declarations of this function. The variant that accepts
1966
  /// a FunctionDecl pointer will set that function declaration to the actual
1967
  /// declaration containing the body (if there is one).
1968
  /// NOTE: For checking if there is a body, use hasBody() instead, to avoid
1969
  /// unnecessary AST de-serialization of the body.
1970
  Stmt *getBody(const FunctionDecl *&Definition) const;
1971
1972
5.73M
  Stmt *getBody() const override {
1973
5.73M
    const FunctionDecl* Definition;
1974
5.73M
    return getBody(Definition);
1975
5.73M
  }
1976
1977
  /// Returns whether this specific declaration of the function is also a
1978
  /// definition that does not contain uninstantiated body.
1979
  ///
1980
  /// This does not determine whether the function has been defined (e.g., in a
1981
  /// previous definition); for that information, use isDefined.
1982
15.4M
  bool isThisDeclarationADefinition() const {
1983
15.4M
    return isDeletedAsWritten() || 
isDefaulted()15.4M
||
Body15.2M
||
hasSkippedBody()8.55M
||
1984
15.4M
           
isLateTemplateParsed()8.55M
||
willHaveBody()8.55M
||
hasDefiningAttr()8.53M
;
1985
15.4M
  }
1986
1987
  /// Returns whether this specific declaration of the function has a body.
1988
20.4M
  bool doesThisDeclarationHaveABody() const {
1989
20.4M
    return Body || 
isLateTemplateParsed()8.11M
;
1990
20.4M
  }
1991
1992
  void setBody(Stmt *B);
1993
10.4k
  void setLazyBody(uint64_t Offset) { Body = Offset; }
1994
1995
  /// Whether this function is variadic.
1996
  bool isVariadic() const;
1997
1998
  /// Whether this function is marked as virtual explicitly.
1999
11.1M
  bool isVirtualAsWritten() const {
2000
11.1M
    return FunctionDeclBits.IsVirtualAsWritten;
2001
11.1M
  }
2002
2003
  /// State that this function is marked as virtual explicitly.
2004
164k
  void setVirtualAsWritten(bool V) { FunctionDeclBits.IsVirtualAsWritten = V; }
2005
2006
  /// Whether this virtual function is pure, i.e. makes the containing class
2007
  /// abstract.
2008
12.1M
  bool isPure() const { return FunctionDeclBits.IsPure; }
2009
  void setPure(bool P = true);
2010
2011
  /// Whether this templated function will be late parsed.
2012
19.3M
  bool isLateTemplateParsed() const {
2013
19.3M
    return FunctionDeclBits.IsLateTemplateParsed;
2014
19.3M
  }
2015
2016
  /// State that this templated function will be late parsed.
2017
23.3k
  void setLateTemplateParsed(bool ILT = true) {
2018
23.3k
    FunctionDeclBits.IsLateTemplateParsed = ILT;
2019
23.3k
  }
2020
2021
  /// Whether this function is "trivial" in some specialized C++ senses.
2022
  /// Can only be true for default constructors, copy constructors,
2023
  /// copy assignment operators, and destructors.  Not meaningful until
2024
  /// the class has been fully built by Sema.
2025
2.43M
  bool isTrivial() const { return FunctionDeclBits.IsTrivial; }
2026
843k
  void setTrivial(bool IT) { FunctionDeclBits.IsTrivial = IT; }
2027
2028
799k
  bool isTrivialForCall() const { return FunctionDeclBits.IsTrivialForCall; }
2029
534k
  void setTrivialForCall(bool IT) { FunctionDeclBits.IsTrivialForCall = IT; }
2030
2031
  /// Whether this function is defaulted per C++0x. Only valid for
2032
  /// special member functions.
2033
36.7M
  bool isDefaulted() const { return FunctionDeclBits.IsDefaulted; }
2034
620k
  void setDefaulted(bool D = true) { FunctionDeclBits.IsDefaulted = D; }
2035
2036
  /// Whether this function is explicitly defaulted per C++0x. Only valid
2037
  /// for special member functions.
2038
5.76M
  bool isExplicitlyDefaulted() const {
2039
5.76M
    return FunctionDeclBits.IsExplicitlyDefaulted;
2040
5.76M
  }
2041
2042
  /// State that this function is explicitly defaulted per C++0x. Only valid
2043
  /// for special member functions.
2044
45.4k
  void setExplicitlyDefaulted(bool ED = true) {
2045
45.4k
    FunctionDeclBits.IsExplicitlyDefaulted = ED;
2046
45.4k
  }
2047
2048
  /// Whether falling off this function implicitly returns null/zero.
2049
  /// If a more specific implicit return value is required, front-ends
2050
  /// should synthesize the appropriate return statements.
2051
3.90M
  bool hasImplicitReturnZero() const {
2052
3.90M
    return FunctionDeclBits.HasImplicitReturnZero;
2053
3.90M
  }
2054
2055
  /// State that falling off this function implicitly returns null/zero.
2056
  /// If a more specific implicit return value is required, front-ends
2057
  /// should synthesize the appropriate return statements.
2058
28.0k
  void setHasImplicitReturnZero(bool IRZ) {
2059
28.0k
    FunctionDeclBits.HasImplicitReturnZero = IRZ;
2060
28.0k
  }
2061
2062
  /// Whether this function has a prototype, either because one
2063
  /// was explicitly written or because it was "inherited" by merging
2064
  /// a declaration without a prototype with a declaration that has a
2065
  /// prototype.
2066
1.35M
  bool hasPrototype() const {
2067
1.35M
    return hasWrittenPrototype() || 
hasInheritedPrototype()39.8k
;
2068
1.35M
  }
2069
2070
  /// Whether this function has a written prototype.
2071
1.75M
  bool hasWrittenPrototype() const {
2072
1.75M
    return FunctionDeclBits.HasWrittenPrototype;
2073
1.75M
  }
2074
2075
  /// State that this function has a written prototype.
2076
4.56M
  void setHasWrittenPrototype(bool P = true) {
2077
4.56M
    FunctionDeclBits.HasWrittenPrototype = P;
2078
4.56M
  }
2079
2080
  /// Whether this function inherited its prototype from a
2081
  /// previous declaration.
2082
137k
  bool hasInheritedPrototype() const {
2083
137k
    return FunctionDeclBits.HasInheritedPrototype;
2084
137k
  }
2085
2086
  /// State that this function inherited its prototype from a
2087
  /// previous declaration.
2088
23.4k
  void setHasInheritedPrototype(bool P = true) {
2089
23.4k
    FunctionDeclBits.HasInheritedPrototype = P;
2090
23.4k
  }
2091
2092
  /// Whether this is a (C++11) constexpr function or constexpr constructor.
2093
11.3M
  bool isConstexpr() const { return FunctionDeclBits.IsConstexpr; }
2094
45.6k
  void setConstexpr(bool IC) { FunctionDeclBits.IsConstexpr = IC; }
2095
2096
  /// Whether the instantiation of this function is pending.
2097
  /// This bit is set when the decision to instantiate this function is made
2098
  /// and unset if and when the function body is created. That leaves out
2099
  /// cases where instantiation did not happen because the template definition
2100
  /// was not seen in this TU. This bit remains set in those cases, under the
2101
  /// assumption that the instantiation will happen in some other TU.
2102
0
  bool instantiationIsPending() const {
2103
0
    return FunctionDeclBits.InstantiationIsPending;
2104
0
  }
2105
2106
  /// State that the instantiation of this function is pending.
2107
  /// (see instantiationIsPending)
2108
546k
  void setInstantiationIsPending(bool IC) {
2109
546k
    FunctionDeclBits.InstantiationIsPending = IC;
2110
546k
  }
2111
2112
  /// Indicates the function uses __try.
2113
550k
  bool usesSEHTry() const { return FunctionDeclBits.UsesSEHTry; }
2114
22.9k
  void setUsesSEHTry(bool UST) { FunctionDeclBits.UsesSEHTry = UST; }
2115
2116
  /// Whether this function has been deleted.
2117
  ///
2118
  /// A function that is "deleted" (via the C++0x "= delete" syntax)
2119
  /// acts like a normal function, except that it cannot actually be
2120
  /// called or have its address taken. Deleted functions are
2121
  /// typically used in C++ overload resolution to attract arguments
2122
  /// whose type or lvalue/rvalue-ness would permit the use of a
2123
  /// different overload that would behave incorrectly. For example,
2124
  /// one might use deleted functions to ban implicit conversion from
2125
  /// a floating-point number to an Integer type:
2126
  ///
2127
  /// @code
2128
  /// struct Integer {
2129
  ///   Integer(long); // construct from a long
2130
  ///   Integer(double) = delete; // no construction from float or double
2131
  ///   Integer(long double) = delete; // no construction from long double
2132
  /// };
2133
  /// @endcode
2134
  // If a function is deleted, its first declaration must be.
2135
23.7M
  bool isDeleted() const {
2136
23.7M
    return getCanonicalDecl()->FunctionDeclBits.IsDeleted;
2137
23.7M
  }
2138
2139
17.0M
  bool isDeletedAsWritten() const {
2140
17.0M
    return FunctionDeclBits.IsDeleted && 
!isDefaulted()99.7k
;
2141
17.0M
  }
2142
2143
112k
  void setDeletedAsWritten(bool D = true) { FunctionDeclBits.IsDeleted = D; }
2144
2145
  /// Determines whether this function is "main", which is the
2146
  /// entry point into an executable program.
2147
  bool isMain() const;
2148
2149
  /// Determines whether this function is a MSVCRT user defined entry
2150
  /// point.
2151
  bool isMSVCRTEntryPoint() const;
2152
2153
  /// Determines whether this operator new or delete is one
2154
  /// of the reserved global placement operators:
2155
  ///    void *operator new(size_t, void *);
2156
  ///    void *operator new[](size_t, void *);
2157
  ///    void operator delete(void *, void *);
2158
  ///    void operator delete[](void *, void *);
2159
  /// These functions have special behavior under [new.delete.placement]:
2160
  ///    These functions are reserved, a C++ program may not define
2161
  ///    functions that displace the versions in the Standard C++ library.
2162
  ///    The provisions of [basic.stc.dynamic] do not apply to these
2163
  ///    reserved placement forms of operator new and operator delete.
2164
  ///
2165
  /// This function must be an allocation or deallocation function.
2166
  bool isReservedGlobalPlacementOperator() const;
2167
2168
  /// Determines whether this function is one of the replaceable
2169
  /// global allocation functions:
2170
  ///    void *operator new(size_t);
2171
  ///    void *operator new(size_t, const std::nothrow_t &) noexcept;
2172
  ///    void *operator new[](size_t);
2173
  ///    void *operator new[](size_t, const std::nothrow_t &) noexcept;
2174
  ///    void operator delete(void *) noexcept;
2175
  ///    void operator delete(void *, std::size_t) noexcept;      [C++1y]
2176
  ///    void operator delete(void *, const std::nothrow_t &) noexcept;
2177
  ///    void operator delete[](void *) noexcept;
2178
  ///    void operator delete[](void *, std::size_t) noexcept;    [C++1y]
2179
  ///    void operator delete[](void *, const std::nothrow_t &) noexcept;
2180
  /// These functions have special behavior under C++1y [expr.new]:
2181
  ///    An implementation is allowed to omit a call to a replaceable global
2182
  ///    allocation function. [...]
2183
  ///
2184
  /// If this function is an aligned allocation/deallocation function, return
2185
  /// true through IsAligned.
2186
  bool isReplaceableGlobalAllocationFunction(bool *IsAligned = nullptr) const;
2187
2188
  /// Determine whether this is a destroying operator delete.
2189
  bool isDestroyingOperatorDelete() const;
2190
2191
  /// Compute the language linkage.
2192
  LanguageLinkage getLanguageLinkage() const;
2193
2194
  /// Determines whether this function is a function with
2195
  /// external, C linkage.
2196
  bool isExternC() const;
2197
2198
  /// Determines whether this function's context is, or is nested within,
2199
  /// a C++ extern "C" linkage spec.
2200
  bool isInExternCContext() const;
2201
2202
  /// Determines whether this function's context is, or is nested within,
2203
  /// a C++ extern "C++" linkage spec.
2204
  bool isInExternCXXContext() const;
2205
2206
  /// Determines whether this is a global function.
2207
  bool isGlobal() const;
2208
2209
  /// Determines whether this function is known to be 'noreturn', through
2210
  /// an attribute on its declaration or its type.
2211
  bool isNoReturn() const;
2212
2213
  /// True if the function was a definition but its body was skipped.
2214
12.1M
  bool hasSkippedBody() const { return FunctionDeclBits.HasSkippedBody; }
2215
23.5k
  void setHasSkippedBody(bool Skipped = true) {
2216
23.5k
    FunctionDeclBits.HasSkippedBody = Skipped;
2217
23.5k
  }
2218
2219
  /// True if this function will eventually have a body, once it's fully parsed.
2220
12.1M
  bool willHaveBody() const { return FunctionDeclBits.WillHaveBody; }
2221
7.69M
  void setWillHaveBody(bool V = true) { FunctionDeclBits.WillHaveBody = V; }
2222
2223
  /// True if this function is considered a multiversioned function.
2224
24.9M
  bool isMultiVersion() const {
2225
24.9M
    return getCanonicalDecl()->FunctionDeclBits.IsMultiVersion;
2226
24.9M
  }
2227
2228
  /// Sets the multiversion state for this declaration and all of its
2229
  /// redeclarations.
2230
23.1k
  void setIsMultiVersion(bool V = true) {
2231
23.1k
    getCanonicalDecl()->FunctionDeclBits.IsMultiVersion = V;
2232
23.1k
  }
2233
2234
  /// Gets the kind of multiversioning attribute this declaration has. Note that
2235
  /// this can return a value even if the function is not multiversion, such as
2236
  /// the case of 'target'.
2237
  MultiVersionKind getMultiVersionKind() const;
2238
2239
2240
  /// True if this function is a multiversioned dispatch function as a part of
2241
  /// the cpu_specific/cpu_dispatch functionality.
2242
  bool isCPUDispatchMultiVersion() const;
2243
  /// True if this function is a multiversioned processor specific function as a
2244
  /// part of the cpu_specific/cpu_dispatch functionality.
2245
  bool isCPUSpecificMultiVersion() const;
2246
2247
  /// True if this function is a multiversioned dispatch function as a part of
2248
  /// the target functionality.
2249
  bool isTargetMultiVersion() const;
2250
2251
  void setPreviousDeclaration(FunctionDecl * PrevDecl);
2252
2253
  FunctionDecl *getCanonicalDecl() override;
2254
66.5M
  const FunctionDecl *getCanonicalDecl() const {
2255
66.5M
    return const_cast<FunctionDecl*>(this)->getCanonicalDecl();
2256
66.5M
  }
2257
2258
  unsigned getBuiltinID() const;
2259
2260
  // ArrayRef interface to parameters.
2261
23.1M
  ArrayRef<ParmVarDecl *> parameters() const {
2262
23.1M
    return {ParamInfo, getNumParams()};
2263
23.1M
  }
2264
19.1M
  MutableArrayRef<ParmVarDecl *> parameters() {
2265
19.1M
    return {ParamInfo, getNumParams()};
2266
19.1M
  }
2267
2268
  // Iterator access to formal parameters.
2269
  using param_iterator = MutableArrayRef<ParmVarDecl *>::iterator;
2270
  using param_const_iterator = ArrayRef<ParmVarDecl *>::const_iterator;
2271
2272
2.00k
  bool param_empty() const { return parameters().empty(); }
2273
973
  param_iterator param_begin() { return parameters().begin(); }
2274
0
  param_iterator param_end() { return parameters().end(); }
2275
985k
  param_const_iterator param_begin() const { return parameters().begin(); }
2276
534k
  param_const_iterator param_end() const { return parameters().end(); }
2277
200k
  size_t param_size() const { return parameters().size(); }
2278
2279
  /// Return the number of parameters this function must have based on its
2280
  /// FunctionType.  This is the length of the ParamInfo array after it has been
2281
  /// created.
2282
  unsigned getNumParams() const;
2283
2284
23.8M
  const ParmVarDecl *getParamDecl(unsigned i) const {
2285
23.8M
    assert(i < getNumParams() && "Illegal param #");
2286
23.8M
    return ParamInfo[i];
2287
23.8M
  }
2288
18.4M
  ParmVarDecl *getParamDecl(unsigned i) {
2289
18.4M
    assert(i < getNumParams() && "Illegal param #");
2290
18.4M
    return ParamInfo[i];
2291
18.4M
  }
2292
8.19M
  void setParams(ArrayRef<ParmVarDecl *> NewParamInfo) {
2293
8.19M
    setParams(getASTContext(), NewParamInfo);
2294
8.19M
  }
2295
2296
  /// Returns the minimum number of arguments needed to call this function. This
2297
  /// may be fewer than the number of function parameters, if some of the
2298
  /// parameters have default arguments (in C++).
2299
  unsigned getMinRequiredArguments() const;
2300
2301
25.7M
  QualType getReturnType() const {
2302
25.7M
    return getType()->castAs<FunctionType>()->getReturnType();
2303
25.7M
  }
2304
2305
  /// Attempt to compute an informative source range covering the
2306
  /// function return type. This may omit qualifiers and other information with
2307
  /// limited representation in the AST.
2308
  SourceRange getReturnTypeSourceRange() const;
2309
2310
  /// Get the declared return type, which may differ from the actual return
2311
  /// type if the return type is deduced.
2312
797k
  QualType getDeclaredReturnType() const {
2313
797k
    auto *TSI = getTypeSourceInfo();
2314
797k
    QualType T = TSI ? 
TSI->getType()794k
:
getType()2.32k
;
2315
797k
    return T->castAs<FunctionType>()->getReturnType();
2316
797k
  }
2317
2318
  /// Attempt to compute an informative source range covering the
2319
  /// function exception specification, if any.
2320
  SourceRange getExceptionSpecSourceRange() const;
2321
2322
  /// Determine the type of an expression that calls this function.
2323
1.11M
  QualType getCallResultType() const {
2324
1.11M
    return getType()->castAs<FunctionType>()->getCallResultType(
2325
1.11M
        getASTContext());
2326
1.11M
  }
2327
2328
  /// Returns the storage class as written in the source. For the
2329
  /// computed linkage of symbol, see getLinkage.
2330
41.6M
  StorageClass getStorageClass() const {
2331
41.6M
    return static_cast<StorageClass>(FunctionDeclBits.SClass);
2332
41.6M
  }
2333
2334
  /// Sets the storage class as written in the source.
2335
22.7k
  void setStorageClass(StorageClass SClass) {
2336
22.7k
    FunctionDeclBits.SClass = SClass;
2337
22.7k
  }
2338
2339
  /// Determine whether the "inline" keyword was specified for this
2340
  /// function.
2341
3.37M
  bool isInlineSpecified() const { return FunctionDeclBits.IsInlineSpecified; }
2342
2343
  /// Set whether the "inline" keyword was specified for this function.
2344
32.4k
  void setInlineSpecified(bool I) {
2345
32.4k
    FunctionDeclBits.IsInlineSpecified = I;
2346
32.4k
    FunctionDeclBits.IsInline = I;
2347
32.4k
  }
2348
2349
  /// Flag that this function is implicitly inline.
2350
2.73M
  void setImplicitlyInline(bool I = true) { FunctionDeclBits.IsInline = I; }
2351
2352
  /// Determine whether this function should be inlined, because it is
2353
  /// either marked "inline" or "constexpr" or is a member function of a class
2354
  /// that was defined in the class body.
2355
23.4M
  bool isInlined() const { return FunctionDeclBits.IsInline; }
2356
2357
  /// Whether this function is marked as explicit explicitly.
2358
6.29M
  bool isExplicitSpecified() const {
2359
6.29M
    return FunctionDeclBits.IsExplicitSpecified;
2360
6.29M
  }
2361
2362
  /// State that this function is marked as explicit explicitly.
2363
946k
  void setExplicitSpecified(bool ExpSpec = true) {
2364
946k
    FunctionDeclBits.IsExplicitSpecified = ExpSpec;
2365
946k
  }
2366
2367
  bool isInlineDefinitionExternallyVisible() const;
2368
2369
  bool isMSExternInline() const;
2370
2371
  bool doesDeclarationForceExternallyVisibleDefinition() const;
2372
2373
  /// Whether this function declaration represents an C++ overloaded
2374
  /// operator, e.g., "operator+".
2375
10.0M
  bool isOverloadedOperator() const {
2376
10.0M
    return getOverloadedOperator() != OO_None;
2377
10.0M
  }
2378
2379
  OverloadedOperatorKind getOverloadedOperator() const;
2380
2381
  const IdentifierInfo *getLiteralIdentifier() const;
2382
2383
  /// If this function is an instantiation of a member function
2384
  /// of a class template specialization, retrieves the function from
2385
  /// which it was instantiated.
2386
  ///
2387
  /// This routine will return non-NULL for (non-templated) member
2388
  /// functions of class templates and for instantiations of function
2389
  /// templates. For example, given:
2390
  ///
2391
  /// \code
2392
  /// template<typename T>
2393
  /// struct X {
2394
  ///   void f(T);
2395
  /// };
2396
  /// \endcode
2397
  ///
2398
  /// The declaration for X<int>::f is a (non-templated) FunctionDecl
2399
  /// whose parent is the class template specialization X<int>. For
2400
  /// this declaration, getInstantiatedFromFunction() will return
2401
  /// the FunctionDecl X<T>::A. When a complete definition of
2402
  /// X<int>::A is required, it will be instantiated from the
2403
  /// declaration returned by getInstantiatedFromMemberFunction().
2404
  FunctionDecl *getInstantiatedFromMemberFunction() const;
2405
2406
  /// What kind of templated function this is.
2407
  TemplatedKind getTemplatedKind() const;
2408
2409
  /// If this function is an instantiation of a member function of a
2410
  /// class template specialization, retrieves the member specialization
2411
  /// information.
2412
  MemberSpecializationInfo *getMemberSpecializationInfo() const;
2413
2414
  /// Specify that this record is an instantiation of the
2415
  /// member function FD.
2416
  void setInstantiationOfMemberFunction(FunctionDecl *FD,
2417
1.15M
                                        TemplateSpecializationKind TSK) {
2418
1.15M
    setInstantiationOfMemberFunction(getASTContext(), FD, TSK);
2419
1.15M
  }
2420
2421
  /// Retrieves the function template that is described by this
2422
  /// function declaration.
2423
  ///
2424
  /// Every function template is represented as a FunctionTemplateDecl
2425
  /// and a FunctionDecl (or something derived from FunctionDecl). The
2426
  /// former contains template properties (such as the template
2427
  /// parameter lists) while the latter contains the actual
2428
  /// description of the template's
2429
  /// contents. FunctionTemplateDecl::getTemplatedDecl() retrieves the
2430
  /// FunctionDecl that describes the function template,
2431
  /// getDescribedFunctionTemplate() retrieves the
2432
  /// FunctionTemplateDecl from a FunctionDecl.
2433
  FunctionTemplateDecl *getDescribedFunctionTemplate() const;
2434
2435
  void setDescribedFunctionTemplate(FunctionTemplateDecl *Template);
2436
2437
  /// Determine whether this function is a function template
2438
  /// specialization.
2439
17.9M
  bool isFunctionTemplateSpecialization() const {
2440
17.9M
    return getPrimaryTemplate() != nullptr;
2441
17.9M
  }
2442
2443
  /// Retrieve the class scope template pattern that this function
2444
  ///  template specialization is instantiated from.
2445
  FunctionDecl *getClassScopeSpecializationPattern() const;
2446
2447
  /// If this function is actually a function template specialization,
2448
  /// retrieve information about this function template specialization.
2449
  /// Otherwise, returns NULL.
2450
  FunctionTemplateSpecializationInfo *getTemplateSpecializationInfo() const;
2451
2452
  /// Determines whether this function is a function template
2453
  /// specialization or a member of a class template specialization that can
2454
  /// be implicitly instantiated.
2455
  bool isImplicitlyInstantiable() const;
2456
2457
  /// Determines if the given function was instantiated from a
2458
  /// function template.
2459
  bool isTemplateInstantiation() const;
2460
2461
  /// Retrieve the function declaration from which this function could
2462
  /// be instantiated, if it is an instantiation (rather than a non-template
2463
  /// or a specialization, for example).
2464
  FunctionDecl *getTemplateInstantiationPattern() const;
2465
2466
  /// Retrieve the primary template that this function template
2467
  /// specialization either specializes or was instantiated from.
2468
  ///
2469
  /// If this function declaration is not a function template specialization,
2470
  /// returns NULL.
2471
  FunctionTemplateDecl *getPrimaryTemplate() const;
2472
2473
  /// Retrieve the template arguments used to produce this function
2474
  /// template specialization from the primary template.
2475
  ///
2476
  /// If this function declaration is not a function template specialization,
2477
  /// returns NULL.
2478
  const TemplateArgumentList *getTemplateSpecializationArgs() const;
2479
2480
  /// Retrieve the template argument list as written in the sources,
2481
  /// if any.
2482
  ///
2483
  /// If this function declaration is not a function template specialization
2484
  /// or if it had no explicit template argument list, returns NULL.
2485
  /// Note that it an explicit template argument list may be written empty,
2486
  /// e.g., template<> void foo<>(char* s);
2487
  const ASTTemplateArgumentListInfo*
2488
  getTemplateSpecializationArgsAsWritten() const;
2489
2490
  /// Specify that this function declaration is actually a function
2491
  /// template specialization.
2492
  ///
2493
  /// \param Template the function template that this function template
2494
  /// specialization specializes.
2495
  ///
2496
  /// \param TemplateArgs the template arguments that produced this
2497
  /// function template specialization from the template.
2498
  ///
2499
  /// \param InsertPos If non-NULL, the position in the function template
2500
  /// specialization set where the function template specialization data will
2501
  /// be inserted.
2502
  ///
2503
  /// \param TSK the kind of template specialization this is.
2504
  ///
2505
  /// \param TemplateArgsAsWritten location info of template arguments.
2506
  ///
2507
  /// \param PointOfInstantiation point at which the function template
2508
  /// specialization was first instantiated.
2509
  void setFunctionTemplateSpecialization(FunctionTemplateDecl *Template,
2510
                const TemplateArgumentList *TemplateArgs,
2511
                void *InsertPos,
2512
                TemplateSpecializationKind TSK = TSK_ImplicitInstantiation,
2513
                const TemplateArgumentListInfo *TemplateArgsAsWritten = nullptr,
2514
284k
                SourceLocation PointOfInstantiation = SourceLocation()) {
2515
284k
    setFunctionTemplateSpecialization(getASTContext(), Template, TemplateArgs,
2516
284k
                                      InsertPos, TSK, TemplateArgsAsWritten,
2517
284k
                                      PointOfInstantiation);
2518
284k
  }
2519
2520
  /// Specifies that this function declaration is actually a
2521
  /// dependent function template specialization.
2522
  void setDependentTemplateSpecialization(ASTContext &Context,
2523
                             const UnresolvedSetImpl &Templates,
2524
                      const TemplateArgumentListInfo &TemplateArgs);
2525
2526
  DependentFunctionTemplateSpecializationInfo *
2527
  getDependentSpecializationInfo() const;
2528
2529
  /// Determine what kind of template instantiation this function
2530
  /// represents.
2531
  TemplateSpecializationKind getTemplateSpecializationKind() const;
2532
2533
  /// Determine what kind of template instantiation this function
2534
  /// represents.
2535
  void setTemplateSpecializationKind(TemplateSpecializationKind TSK,
2536
                        SourceLocation PointOfInstantiation = SourceLocation());
2537
2538
  /// Retrieve the (first) point of instantiation of a function template
2539
  /// specialization or a member of a class template specialization.
2540
  ///
2541
  /// \returns the first point of instantiation, if this function was
2542
  /// instantiated from a template; otherwise, returns an invalid source
2543
  /// location.
2544
  SourceLocation getPointOfInstantiation() const;
2545
2546
  /// Determine whether this is or was instantiated from an out-of-line
2547
  /// definition of a member function.
2548
  bool isOutOfLine() const override;
2549
2550
  /// Identify a memory copying or setting function.
2551
  /// If the given function is a memory copy or setting function, returns
2552
  /// the corresponding Builtin ID. If the function is not a memory function,
2553
  /// returns 0.
2554
  unsigned getMemoryFunctionKind() const;
2555
2556
  /// Returns ODRHash of the function.  This value is calculated and
2557
  /// stored on first call, then the stored value returned on the other calls.
2558
  unsigned getODRHash();
2559
2560
  /// Returns cached ODRHash of the function.  This must have been previously
2561
  /// computed and stored.
2562
  unsigned getODRHash() const;
2563
2564
  // Implement isa/cast/dyncast/etc.
2565
393M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2566
570M
  static bool classofKind(Kind K) {
2567
570M
    return K >= firstFunction && 
K <= lastFunction336M
;
2568
570M
  }
2569
0
  static DeclContext *castToDeclContext(const FunctionDecl *D) {
2570
0
    return static_cast<DeclContext *>(const_cast<FunctionDecl*>(D));
2571
0
  }
2572
0
  static FunctionDecl *castFromDeclContext(const DeclContext *DC) {
2573
0
    return static_cast<FunctionDecl *>(const_cast<DeclContext*>(DC));
2574
0
  }
2575
};
2576
2577
/// Represents a member of a struct/union/class.
2578
class FieldDecl : public DeclaratorDecl, public Mergeable<FieldDecl> {
2579
  unsigned BitField : 1;
2580
  unsigned Mutable : 1;
2581
  mutable unsigned CachedFieldIndex : 30;
2582
2583
  /// The kinds of value we can store in InitializerOrBitWidth.
2584
  ///
2585
  /// Note that this is compatible with InClassInitStyle except for
2586
  /// ISK_CapturedVLAType.
2587
  enum InitStorageKind {
2588
    /// If the pointer is null, there's nothing special.  Otherwise,
2589
    /// this is a bitfield and the pointer is the Expr* storing the
2590
    /// bit-width.
2591
    ISK_NoInit = (unsigned) ICIS_NoInit,
2592
2593
    /// The pointer is an (optional due to delayed parsing) Expr*
2594
    /// holding the copy-initializer.
2595
    ISK_InClassCopyInit = (unsigned) ICIS_CopyInit,
2596
2597
    /// The pointer is an (optional due to delayed parsing) Expr*
2598
    /// holding the list-initializer.
2599
    ISK_InClassListInit = (unsigned) ICIS_ListInit,
2600
2601
    /// The pointer is a VariableArrayType* that's been captured;
2602
    /// the enclosing context is a lambda or captured statement.
2603
    ISK_CapturedVLAType,
2604
  };
2605
2606
  /// If this is a bitfield with a default member initializer, this
2607
  /// structure is used to represent the two expressions.
2608
  struct InitAndBitWidth {
2609
    Expr *Init;
2610
    Expr *BitWidth;
2611
  };
2612
2613
  /// Storage for either the bit-width, the in-class initializer, or
2614
  /// both (via InitAndBitWidth), or the captured variable length array bound.
2615
  ///
2616
  /// If the storage kind is ISK_InClassCopyInit or
2617
  /// ISK_InClassListInit, but the initializer is null, then this
2618
  /// field has an in-class initializer that has not yet been parsed
2619
  /// and attached.
2620
  // FIXME: Tail-allocate this to reduce the size of FieldDecl in the
2621
  // overwhelmingly common case that we have none of these things.
2622
  llvm::PointerIntPair<void *, 2, InitStorageKind> InitStorage;
2623
2624
protected:
2625
  FieldDecl(Kind DK, DeclContext *DC, SourceLocation StartLoc,
2626
            SourceLocation IdLoc, IdentifierInfo *Id,
2627
            QualType T, TypeSourceInfo *TInfo, Expr *BW, bool Mutable,
2628
            InClassInitStyle InitStyle)
2629
    : DeclaratorDecl(DK, DC, IdLoc, Id, T, TInfo, StartLoc),
2630
      BitField(false), Mutable(Mutable), CachedFieldIndex(0),
2631
2.77M
      InitStorage(nullptr, (InitStorageKind) InitStyle) {
2632
2.77M
    if (BW)
2633
35.9k
      setBitWidth(BW);
2634
2.77M
  }
2635
2636
public:
2637
  friend class ASTDeclReader;
2638
  friend class ASTDeclWriter;
2639
2640
  static FieldDecl *Create(const ASTContext &C, DeclContext *DC,
2641
                           SourceLocation StartLoc, SourceLocation IdLoc,
2642
                           IdentifierInfo *Id, QualType T,
2643
                           TypeSourceInfo *TInfo, Expr *BW, bool Mutable,
2644
                           InClassInitStyle InitStyle);
2645
2646
  static FieldDecl *CreateDeserialized(ASTContext &C, unsigned ID);
2647
2648
  /// Returns the index of this field within its record,
2649
  /// as appropriate for passing to ASTRecordLayout::getFieldOffset.
2650
  unsigned getFieldIndex() const;
2651
2652
  /// Determines whether this field is mutable (C++ only).
2653
6.25M
  bool isMutable() const { return Mutable; }
2654
2655
  /// Determines whether this field is a bitfield.
2656
9.64M
  bool isBitField() const { return BitField; }
2657
2658
  /// Determines whether this is an unnamed bitfield.
2659
4.43M
  bool isUnnamedBitfield() const { return isBitField() && 
!getDeclName()37.9k
; }
2660
2661
  /// Determines whether this field is a
2662
  /// representative for an anonymous struct or union. Such fields are
2663
  /// unnamed and are implicitly generated by the implementation to
2664
  /// store the data for the anonymous union or struct.
2665
  bool isAnonymousStructOrUnion() const;
2666
2667
226k
  Expr *getBitWidth() const {
2668
226k
    if (!BitField)
2669
171k
      return nullptr;
2670
54.8k
    void *Ptr = InitStorage.getPointer();
2671
54.8k
    if (getInClassInitStyle())
2672
76
      return static_cast<InitAndBitWidth*>(Ptr)->BitWidth;
2673
54.7k
    return static_cast<Expr*>(Ptr);
2674
54.7k
  }
2675
2676
  unsigned getBitWidthValue(const ASTContext &Ctx) const;
2677
2678
  /// Set the bit-field width for this member.
2679
  // Note: used by some clients (i.e., do not remove it).
2680
36.1k
  void setBitWidth(Expr *Width) {
2681
36.1k
    assert(!hasCapturedVLAType() && !BitField &&
2682
36.1k
           "bit width or captured type already set");
2683
36.1k
    assert(Width && "no bit width specified");
2684
36.1k
    InitStorage.setPointer(
2685
36.1k
        InitStorage.getInt()
2686
36.1k
            ? new (getASTContext())
2687
9
                  InitAndBitWidth{getInClassInitializer(), Width}
2688
36.1k
            : 
static_cast<void*>(Width)36.1k
);
2689
36.1k
    BitField = true;
2690
36.1k
  }
2691
2692
  /// Remove the bit-field width from this member.
2693
  // Note: used by some clients (i.e., do not remove it).
2694
0
  void removeBitWidth() {
2695
0
    assert(isBitField() && "no bitfield width to remove");
2696
0
    InitStorage.setPointer(getInClassInitializer());
2697
0
    BitField = false;
2698
0
  }
2699
2700
  /// Is this a zero-length bit-field? Such bit-fields aren't really bit-fields
2701
  /// at all and instead act as a separator between contiguous runs of other
2702
  /// bit-fields.
2703
  bool isZeroLengthBitField(const ASTContext &Ctx) const;
2704
2705
  /// Get the kind of (C++11) default member initializer that this field has.
2706
6.34M
  InClassInitStyle getInClassInitStyle() const {
2707
6.34M
    InitStorageKind storageKind = InitStorage.getInt();
2708
6.34M
    return (storageKind == ISK_CapturedVLAType
2709
6.34M
              ? 
ICIS_NoInit16.6k
:
(InClassInitStyle) storageKind6.32M
);
2710
6.34M
  }
2711
2712
  /// Determine whether this member has a C++11 default member initializer.
2713
6.15M
  bool hasInClassInitializer() const {
2714
6.15M
    return getInClassInitStyle() != ICIS_NoInit;
2715
6.15M
  }
2716
2717
  /// Get the C++11 default member initializer for this member, or null if one
2718
  /// has not been set. If a valid declaration has a default member initializer,
2719
  /// but this returns null, then we have not parsed and attached it yet.
2720
23.8k
  Expr *getInClassInitializer() const {
2721
23.8k
    if (!hasInClassInitializer())
2722
9.27k
      return nullptr;
2723
14.6k
    void *Ptr = InitStorage.getPointer();
2724
14.6k
    if (BitField)
2725
99
      return static_cast<InitAndBitWidth*>(Ptr)->Init;
2726
14.5k
    return static_cast<Expr*>(Ptr);
2727
14.5k
  }
2728
2729
  /// Set the C++11 in-class initializer for this member.
2730
5.74k
  void setInClassInitializer(Expr *Init) {
2731
5.74k
    assert(hasInClassInitializer() && !getInClassInitializer());
2732
5.74k
    if (BitField)
2733
8
      static_cast<InitAndBitWidth*>(InitStorage.getPointer())->Init = Init;
2734
5.74k
    else
2735
5.74k
      InitStorage.setPointer(Init);
2736
5.74k
  }
2737
2738
  /// Remove the C++11 in-class initializer from this member.
2739
39
  void removeInClassInitializer() {
2740
39
    assert(hasInClassInitializer() && "no initializer to remove");
2741
39
    InitStorage.setPointerAndInt(getBitWidth(), ISK_NoInit);
2742
39
  }
2743
2744
  /// Determine whether this member captures the variable length array
2745
  /// type.
2746
127k
  bool hasCapturedVLAType() const {
2747
127k
    return InitStorage.getInt() == ISK_CapturedVLAType;
2748
127k
  }
2749
2750
  /// Get the captured variable length array type.
2751
24.6k
  const VariableArrayType *getCapturedVLAType() const {
2752
24.6k
    return hasCapturedVLAType() ? static_cast<const VariableArrayType *>(
2753
24.6k
                                      InitStorage.getPointer())
2754
24.6k
                                : 
nullptr0
;
2755
24.6k
  }
2756
2757
  /// Set the captured variable length array type for this field.
2758
  void setCapturedVLAType(const VariableArrayType *VLAType);
2759
2760
  /// Returns the parent of this field declaration, which
2761
  /// is the struct in which this field is defined.
2762
2.29M
  const RecordDecl *getParent() const {
2763
2.29M
    return cast<RecordDecl>(getDeclContext());
2764
2.29M
  }
2765
2766
890k
  RecordDecl *getParent() {
2767
890k
    return cast<RecordDecl>(getDeclContext());
2768
890k
  }
2769
2770
  SourceRange getSourceRange() const override LLVM_READONLY;
2771
2772
  /// Retrieves the canonical declaration of this field.
2773
5.30M
  FieldDecl *getCanonicalDecl() override { return getFirstDecl(); }
2774
2.73M
  const FieldDecl *getCanonicalDecl() const { return getFirstDecl(); }
2775
2776
  // Implement isa/cast/dyncast/etc.
2777
127M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2778
127M
  static bool classofKind(Kind K) { return K >= firstField && 
K <= lastField99.5M
; }
2779
};
2780
2781
/// An instance of this object exists for each enum constant
2782
/// that is defined.  For example, in "enum X {a,b}", each of a/b are
2783
/// EnumConstantDecl's, X is an instance of EnumDecl, and the type of a/b is a
2784
/// TagType for the X EnumDecl.
2785
class EnumConstantDecl : public ValueDecl, public Mergeable<EnumConstantDecl> {
2786
  Stmt *Init; // an integer constant expression
2787
  llvm::APSInt Val; // The value.
2788
2789
protected:
2790
  EnumConstantDecl(DeclContext *DC, SourceLocation L,
2791
                   IdentifierInfo *Id, QualType T, Expr *E,
2792
                   const llvm::APSInt &V)
2793
363k
    : ValueDecl(EnumConstant, DC, L, Id, T), Init((Stmt*)E), Val(V) {}
2794
2795
public:
2796
  friend class StmtIteratorBase;
2797
2798
  static EnumConstantDecl *Create(ASTContext &C, EnumDecl *DC,
2799
                                  SourceLocation L, IdentifierInfo *Id,
2800
                                  QualType T, Expr *E,
2801
                                  const llvm::APSInt &V);
2802
  static EnumConstantDecl *CreateDeserialized(ASTContext &C, unsigned ID);
2803
2804
1.59k
  const Expr *getInitExpr() const { return (const Expr*) Init; }
2805
486k
  Expr *getInitExpr() { return (Expr*) Init; }
2806
3.03M
  const llvm::APSInt &getInitVal() const { return Val; }
2807
2808
60.0k
  void setInitExpr(Expr *E) { Init = (Stmt*) E; }
2809
289k
  void setInitVal(const llvm::APSInt &V) { Val = V; }
2810
2811
  SourceRange getSourceRange() const override LLVM_READONLY;
2812
2813
  /// Retrieves the canonical declaration of this enumerator.
2814
627k
  EnumConstantDecl *getCanonicalDecl() override { return getFirstDecl(); }
2815
0
  const EnumConstantDecl *getCanonicalDecl() const { return getFirstDecl(); }
2816
2817
  // Implement isa/cast/dyncast/etc.
2818
51.3M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2819
51.3M
  static bool classofKind(Kind K) { return K == EnumConstant; }
2820
};
2821
2822
/// Represents a field injected from an anonymous union/struct into the parent
2823
/// scope. These are always implicit.
2824
class IndirectFieldDecl : public ValueDecl,
2825
                          public Mergeable<IndirectFieldDecl> {
2826
  NamedDecl **Chaining;
2827
  unsigned ChainingSize;
2828
2829
  IndirectFieldDecl(ASTContext &C, DeclContext *DC, SourceLocation L,
2830
                    DeclarationName N, QualType T,
2831
                    MutableArrayRef<NamedDecl *> CH);
2832
2833
  void anchor() override;
2834
2835
public:
2836
  friend class ASTDeclReader;
2837
2838
  static IndirectFieldDecl *Create(ASTContext &C, DeclContext *DC,
2839
                                   SourceLocation L, IdentifierInfo *Id,
2840
                                   QualType T, llvm::MutableArrayRef<NamedDecl *> CH);
2841
2842
  static IndirectFieldDecl *CreateDeserialized(ASTContext &C, unsigned ID);
2843
2844
  using chain_iterator = ArrayRef<NamedDecl *>::const_iterator;
2845
2846
87.3k
  ArrayRef<NamedDecl *> chain() const {
2847
87.3k
    return llvm::makeArrayRef(Chaining, ChainingSize);
2848
87.3k
  }
2849
12.7k
  chain_iterator chain_begin() const { return chain().begin(); }
2850
12.7k
  chain_iterator chain_end() const { return chain().end(); }
2851
2852
7.50k
  unsigned getChainingSize() const { return ChainingSize; }
2853
2854
31.4k
  FieldDecl *getAnonField() const {
2855
31.4k
    assert(chain().size() >= 2);
2856
31.4k
    return cast<FieldDecl>(chain().back());
2857
31.4k
  }
2858
2859
12.3k
  VarDecl *getVarDecl() const {
2860
12.3k
    assert(chain().size() >= 2);
2861
12.3k
    return dyn_cast<VarDecl>(chain().front());
2862
12.3k
  }
2863
2864
21.7k
  IndirectFieldDecl *getCanonicalDecl() override { return getFirstDecl(); }
2865
0
  const IndirectFieldDecl *getCanonicalDecl() const { return getFirstDecl(); }
2866
2867
  // Implement isa/cast/dyncast/etc.
2868
63.8M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2869
63.8M
  static bool classofKind(Kind K) { return K == IndirectField; }
2870
};
2871
2872
/// Represents a declaration of a type.
2873
class TypeDecl : public NamedDecl {
2874
  friend class ASTContext;
2875
2876
  /// This indicates the Type object that represents
2877
  /// this TypeDecl.  It is a cache maintained by
2878
  /// ASTContext::getTypedefType, ASTContext::getTagDeclType, and
2879
  /// ASTContext::getTemplateTypeParmType, and TemplateTypeParmDecl.
2880
  mutable const Type *TypeForDecl = nullptr;
2881
2882
  /// The start of the source range for this declaration.
2883
  SourceLocation LocStart;
2884
2885
  void anchor() override;
2886
2887
protected:
2888
  TypeDecl(Kind DK, DeclContext *DC, SourceLocation L, IdentifierInfo *Id,
2889
           SourceLocation StartL = SourceLocation())
2890
9.25M
    : NamedDecl(DK, DC, L, Id), LocStart(StartL) {}
2891
2892
public:
2893
  // Low-level accessor. If you just want the type defined by this node,
2894
  // check out ASTContext::getTypeDeclType or one of
2895
  // ASTContext::getTypedefType, ASTContext::getRecordType, etc. if you
2896
  // already know the specific kind of node this is.
2897
34.4M
  const Type *getTypeForDecl() const { return TypeForDecl; }
2898
2.44M
  void setTypeForDecl(const Type *TD) { TypeForDecl = TD; }
2899
2900
5.52M
  SourceLocation getBeginLoc() const LLVM_READONLY { return LocStart; }
2901
1.06M
  void setLocStart(SourceLocation L) { LocStart = L; }
2902
2.03k
  SourceRange getSourceRange() const override LLVM_READONLY {
2903
2.03k
    if (LocStart.isValid())
2904
2.03k
      return SourceRange(LocStart, getLocation());
2905
3
    else
2906
3
      return SourceRange(getLocation());
2907
2.03k
  }
2908
2909
  // Implement isa/cast/dyncast/etc.
2910
91.8M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2911
92.1M
  static bool classofKind(Kind K) { return K >= firstType && 
K <= lastType55.8M
; }
2912
};
2913
2914
/// Base class for declarations which introduce a typedef-name.
2915
class TypedefNameDecl : public TypeDecl, public Redeclarable<TypedefNameDecl> {
2916
  struct alignas(8) ModedTInfo {
2917
    TypeSourceInfo *first;
2918
    QualType second;
2919
  };
2920
2921
  /// If int part is 0, we have not computed IsTransparentTag.
2922
  /// Otherwise, IsTransparentTag is (getInt() >> 1).
2923
  mutable llvm::PointerIntPair<
2924
      llvm::PointerUnion<TypeSourceInfo *, ModedTInfo *>, 2>
2925
      MaybeModedTInfo;
2926
2927
  void anchor() override;
2928
2929
protected:
2930
  TypedefNameDecl(Kind DK, ASTContext &C, DeclContext *DC,
2931
                  SourceLocation StartLoc, SourceLocation IdLoc,
2932
                  IdentifierInfo *Id, TypeSourceInfo *TInfo)
2933
      : TypeDecl(DK, DC, IdLoc, Id, StartLoc), redeclarable_base(C),
2934
2.42M
        MaybeModedTInfo(TInfo, 0) {}
2935
2936
  using redeclarable_base = Redeclarable<TypedefNameDecl>;
2937
2938
305k
  TypedefNameDecl *getNextRedeclarationImpl() override {
2939
305k
    return getNextRedeclaration();
2940
305k
  }
2941
2942
12.5k
  TypedefNameDecl *getPreviousDeclImpl() override {
2943
12.5k
    return getPreviousDecl();
2944
12.5k
  }
2945
2946
624k
  TypedefNameDecl *getMostRecentDeclImpl() override {
2947
624k
    return getMostRecentDecl();
2948
624k
  }
2949
2950
public:
2951
  using redecl_range = redeclarable_base::redecl_range;
2952
  using redecl_iterator = redeclarable_base::redecl_iterator;
2953
2954
  using redeclarable_base::redecls_begin;
2955
  using redeclarable_base::redecls_end;
2956
  using redeclarable_base::redecls;
2957
  using redeclarable_base::getPreviousDecl;
2958
  using redeclarable_base::getMostRecentDecl;
2959
  using redeclarable_base::isFirstDecl;
2960
2961
55.5M
  bool isModed() const {
2962
55.5M
    return MaybeModedTInfo.getPointer().is<ModedTInfo *>();
2963
55.5M
  }
2964
2965
2.30M
  TypeSourceInfo *getTypeSourceInfo() const {
2966
2.30M
    return isModed() ? 
MaybeModedTInfo.getPointer().get<ModedTInfo *>()->first2.35k
2967
2.30M
                     : 
MaybeModedTInfo.getPointer().get<TypeSourceInfo *>()2.30M
;
2968
2.30M
  }
2969
2970
53.2M
  QualType getUnderlyingType() const {
2971
53.2M
    return isModed() ? 
MaybeModedTInfo.getPointer().get<ModedTInfo *>()->second26.4k
2972
53.2M
                     : MaybeModedTInfo.getPointer()
2973
53.2M
                           .get<TypeSourceInfo *>()
2974
53.2M
                           ->getType();
2975
53.2M
  }
2976
2977
7.84k
  void setTypeSourceInfo(TypeSourceInfo *newType) {
2978
7.84k
    MaybeModedTInfo.setPointer(newType);
2979
7.84k
  }
2980
2981
2.39k
  void setModedTypeSourceInfo(TypeSourceInfo *unmodedTSI, QualType modedTy) {
2982
2.39k
    MaybeModedTInfo.setPointer(new (getASTContext(), 8)
2983
2.39k
                                   ModedTInfo({unmodedTSI, modedTy}));
2984
2.39k
  }
2985
2986
  /// Retrieves the canonical declaration of this typedef-name.
2987
10.5M
  TypedefNameDecl *getCanonicalDecl() override { return getFirstDecl(); }
2988
67
  const TypedefNameDecl *getCanonicalDecl() const { return getFirstDecl(); }
2989
2990
  /// Retrieves the tag declaration for which this is the typedef name for
2991
  /// linkage purposes, if any.
2992
  ///
2993
  /// \param AnyRedecl Look for the tag declaration in any redeclaration of
2994
  /// this typedef declaration.
2995
  TagDecl *getAnonDeclWithTypedefName(bool AnyRedecl = false) const;
2996
2997
  /// Determines if this typedef shares a name and spelling location with its
2998
  /// underlying tag type, as is the case with the NS_ENUM macro.
2999
  bool isTransparentTag() const {
3000
    if (MaybeModedTInfo.getInt())
3001
      return MaybeModedTInfo.getInt() & 0x2;
3002
    return isTransparentTagSlow();
3003
  }
3004
3005
  // Implement isa/cast/dyncast/etc.
3006
76.1M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3007
76.1M
  static bool classofKind(Kind K) {
3008
76.1M
    return K >= firstTypedefName && 
K <= lastTypedefName59.7M
;
3009
76.1M
  }
3010
3011
private:
3012
  bool isTransparentTagSlow() const;
3013
};
3014
3015
/// Represents the declaration of a typedef-name via the 'typedef'
3016
/// type specifier.
3017
class TypedefDecl : public TypedefNameDecl {
3018
  TypedefDecl(ASTContext &C, DeclContext *DC, SourceLocation StartLoc,
3019
              SourceLocation IdLoc, IdentifierInfo *Id, TypeSourceInfo *TInfo)
3020
2.34M
      : TypedefNameDecl(Typedef, C, DC, StartLoc, IdLoc, Id, TInfo) {}
3021
3022
public:
3023
  static TypedefDecl *Create(ASTContext &C, DeclContext *DC,
3024
                             SourceLocation StartLoc, SourceLocation IdLoc,
3025
                             IdentifierInfo *Id, TypeSourceInfo *TInfo);
3026
  static TypedefDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3027
3028
  SourceRange getSourceRange() const override LLVM_READONLY;
3029
3030
  // Implement isa/cast/dyncast/etc.
3031
1.96k
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3032
1.96k
  static bool classofKind(Kind K) { return K == Typedef; }
3033
};
3034
3035
/// Represents the declaration of a typedef-name via a C++11
3036
/// alias-declaration.
3037
class TypeAliasDecl : public TypedefNameDecl {
3038
  /// The template for which this is the pattern, if any.
3039
  TypeAliasTemplateDecl *Template;
3040
3041
  TypeAliasDecl(ASTContext &C, DeclContext *DC, SourceLocation StartLoc,
3042
                SourceLocation IdLoc, IdentifierInfo *Id, TypeSourceInfo *TInfo)
3043
      : TypedefNameDecl(TypeAlias, C, DC, StartLoc, IdLoc, Id, TInfo),
3044
76.4k
        Template(nullptr) {}
3045
3046
public:
3047
  static TypeAliasDecl *Create(ASTContext &C, DeclContext *DC,
3048
                               SourceLocation StartLoc, SourceLocation IdLoc,
3049
                               IdentifierInfo *Id, TypeSourceInfo *TInfo);
3050
  static TypeAliasDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3051
3052
  SourceRange getSourceRange() const override LLVM_READONLY;
3053
3054
3.45k
  TypeAliasTemplateDecl *getDescribedAliasTemplate() const { return Template; }
3055
54.5k
  void setDescribedAliasTemplate(TypeAliasTemplateDecl *TAT) { Template = TAT; }
3056
3057
  // Implement isa/cast/dyncast/etc.
3058
1.15M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3059
1.15M
  static bool classofKind(Kind K) { return K == TypeAlias; }
3060
};
3061
3062
/// Represents the declaration of a struct/union/class/enum.
3063
class TagDecl : public TypeDecl,
3064
                public DeclContext,
3065
                public Redeclarable<TagDecl> {
3066
  // This class stores some data in DeclContext::TagDeclBits
3067
  // to save some space. Use the provided accessors to access it.
3068
public:
3069
  // This is really ugly.
3070
  using TagKind = TagTypeKind;
3071
3072
private:
3073
  SourceRange BraceRange;
3074
3075
  // A struct representing syntactic qualifier info,
3076
  // to be used for the (uncommon) case of out-of-line declarations.
3077
  using ExtInfo = QualifierInfo;
3078
3079
  /// If the (out-of-line) tag declaration name
3080
  /// is qualified, it points to the qualifier info (nns and range);
3081
  /// otherwise, if the tag declaration is anonymous and it is part of
3082
  /// a typedef or alias, it points to the TypedefNameDecl (used for mangling);
3083
  /// otherwise, if the tag declaration is anonymous and it is used as a
3084
  /// declaration specifier for variables, it points to the first VarDecl (used
3085
  /// for mangling);
3086
  /// otherwise, it is a null (TypedefNameDecl) pointer.
3087
  llvm::PointerUnion<TypedefNameDecl *, ExtInfo *> TypedefNameDeclOrQualifier;
3088
3089
1.94M
  bool hasExtInfo() const { return TypedefNameDeclOrQualifier.is<ExtInfo *>(); }
3090
61.0k
  ExtInfo *getExtInfo() { return TypedefNameDeclOrQualifier.get<ExtInfo *>(); }
3091
401
  const ExtInfo *getExtInfo() const {
3092
401
    return TypedefNameDeclOrQualifier.get<ExtInfo *>();
3093
401
  }
3094
3095
protected:
3096
  TagDecl(Kind DK, TagKind TK, const ASTContext &C, DeclContext *DC,
3097
          SourceLocation L, IdentifierInfo *Id, TagDecl *PrevDecl,
3098
          SourceLocation StartL);
3099
3100
  using redeclarable_base = Redeclarable<TagDecl>;
3101
3102
737k
  TagDecl *getNextRedeclarationImpl() override {
3103
737k
    return getNextRedeclaration();
3104
737k
  }
3105
3106
16.0k
  TagDecl *getPreviousDeclImpl() override {
3107
16.0k
    return getPreviousDecl();
3108
16.0k
  }
3109
3110
2.20M
  TagDecl *getMostRecentDeclImpl() override {
3111
2.20M
    return getMostRecentDecl();
3112
2.20M
  }
3113
3114
  /// Completes the definition of this tag declaration.
3115
  ///
3116
  /// This is a helper function for derived classes.
3117
  void completeDefinition();
3118
3119
  /// True if this decl is currently being defined.
3120
9.24M
  void setBeingDefined(bool V = true) { TagDeclBits.IsBeingDefined = V; }
3121
3122
  /// Indicates whether it is possible for declarations of this kind
3123
  /// to have an out-of-date definition.
3124
  ///
3125
  /// This option is only enabled when modules are enabled.
3126
4.42M
  void setMayHaveOutOfDateDef(bool V = true) {
3127
4.42M
    TagDeclBits.MayHaveOutOfDateDef = V;
3128
4.42M
  }
3129
3130
public:
3131
  friend class ASTDeclReader;
3132
  friend class ASTDeclWriter;
3133
3134
  using redecl_range = redeclarable_base::redecl_range;
3135
  using redecl_iterator = redeclarable_base::redecl_iterator;
3136
3137
  using redeclarable_base::redecls_begin;
3138
  using redeclarable_base::redecls_end;
3139
  using redeclarable_base::redecls;
3140
  using redeclarable_base::getPreviousDecl;
3141
  using redeclarable_base::getMostRecentDecl;
3142
  using redeclarable_base::isFirstDecl;
3143
3144
1.52M
  SourceRange getBraceRange() const { return BraceRange; }
3145
2.06M
  void setBraceRange(SourceRange R) { BraceRange = R; }
3146
3147
  /// Return SourceLocation representing start of source
3148
  /// range ignoring outer template declarations.
3149
1.39M
  SourceLocation getInnerLocStart() const { return getBeginLoc(); }
3150
3151
  /// Return SourceLocation representing start of source
3152
  /// range taking into account any outer template declarations.
3153
  SourceLocation getOuterLocStart() const;
3154
  SourceRange getSourceRange() const override LLVM_READONLY;
3155
3156
  TagDecl *getCanonicalDecl() override;
3157
15.3k
  const TagDecl *getCanonicalDecl() const {
3158
15.3k
    return const_cast<TagDecl*>(this)->getCanonicalDecl();
3159
15.3k
  }
3160
3161
  /// Return true if this declaration is a completion definition of the type.
3162
  /// Provided for consistency.
3163
71.5k
  bool isThisDeclarationADefinition() const {
3164
71.5k
    return isCompleteDefinition();
3165
71.5k
  }
3166
3167
  /// Return true if this decl has its body fully specified.
3168
538M
  bool isCompleteDefinition() const { return TagDeclBits.IsCompleteDefinition; }
3169
3170
  /// True if this decl has its body fully specified.
3171
6.86M
  void setCompleteDefinition(bool V = true) {
3172
6.86M
    TagDeclBits.IsCompleteDefinition = V;
3173
6.86M
  }
3174
3175
  /// Return true if this complete decl is
3176
  /// required to be complete for some existing use.
3177
7.87M
  bool isCompleteDefinitionRequired() const {
3178
7.87M
    return TagDeclBits.IsCompleteDefinitionRequired;
3179
7.87M
  }
3180
3181
  /// True if this complete decl is
3182
  /// required to be complete for some existing use.
3183
5.78M
  void setCompleteDefinitionRequired(bool V = true) {
3184
5.78M
    TagDeclBits.IsCompleteDefinitionRequired = V;
3185
5.78M
  }
3186
3187
  /// Return true if this decl is currently being defined.
3188
55.9M
  bool isBeingDefined() const { return TagDeclBits.IsBeingDefined; }
3189
3190
  /// True if this tag declaration is "embedded" (i.e., defined or declared
3191
  /// for the very first time) in the syntax of a declarator.
3192
36.9k
  bool isEmbeddedInDeclarator() const {
3193
36.9k
    return TagDeclBits.IsEmbeddedInDeclarator;
3194
36.9k
  }
3195
3196
  /// True if this tag declaration is "embedded" (i.e., defined or declared
3197
  /// for the very first time) in the syntax of a declarator.
3198
4.64M
  void setEmbeddedInDeclarator(bool isInDeclarator) {
3199
4.64M
    TagDeclBits.IsEmbeddedInDeclarator = isInDeclarator;
3200
4.64M
  }
3201
3202
  /// True if this tag is free standing, e.g. "struct foo;".
3203
36.9k
  bool isFreeStanding() const { return TagDeclBits.IsFreeStanding; }
3204
3205
  /// True if this tag is free standing, e.g. "struct foo;".
3206
5.39M
  void setFreeStanding(bool isFreeStanding = true) {
3207
5.39M
    TagDeclBits.IsFreeStanding = isFreeStanding;
3208
5.39M
  }
3209
3210
  /// Indicates whether it is possible for declarations of this kind
3211
  /// to have an out-of-date definition.
3212
  ///
3213
  /// This option is only enabled when modules are enabled.
3214
64.7M
  bool mayHaveOutOfDateDef() const { return TagDeclBits.MayHaveOutOfDateDef; }
3215
3216
  /// Whether this declaration declares a type that is
3217
  /// dependent, i.e., a type that somehow depends on template
3218
  /// parameters.
3219
14.5M
  bool isDependentType() const { return isDependentContext(); }
3220
3221
  /// Starts the definition of this tag declaration.
3222
  ///
3223
  /// This method should be invoked at the beginning of the definition
3224
  /// of this tag declaration. It will set the tag type into a state
3225
  /// where it is in the process of being defined.
3226
  void startDefinition();
3227
3228
  /// Returns the TagDecl that actually defines this
3229
  ///  struct/union/class/enum.  When determining whether or not a
3230
  ///  struct/union/class/enum has a definition, one should use this
3231
  ///  method as opposed to 'isDefinition'.  'isDefinition' indicates
3232
  ///  whether or not a specific TagDecl is defining declaration, not
3233
  ///  whether or not the struct/union/class/enum type is defined.
3234
  ///  This method returns NULL if there is no TagDecl that defines
3235
  ///  the struct/union/class/enum.
3236
  TagDecl *getDefinition() const;
3237
3238
143k
  StringRef getKindName() const {
3239
143k
    return TypeWithKeyword::getTagTypeKindName(getTagKind());
3240
143k
  }
3241
3242
30.7M
  TagKind getTagKind() const {
3243
30.7M
    return static_cast<TagKind>(TagDeclBits.TagDeclKind);
3244
30.7M
  }
3245
3246
5.49M
  void setTagKind(TagKind TK) { TagDeclBits.TagDeclKind = TK; }
3247
3248
2.61M
  bool isStruct() const { return getTagKind() == TTK_Struct; }
3249
6.00M
  bool isInterface() const { return getTagKind() == TTK_Interface; }
3250
1.33M
  bool isClass()  const { return getTagKind() == TTK_Class; }
3251
14.3M
  bool isUnion()  const { return getTagKind() == TTK_Union; }
3252
0
  bool isEnum()   const { return getTagKind() == TTK_Enum; }
3253
3254
  /// Is this tag type named, either directly or via being defined in
3255
  /// a typedef of this type?
3256
  ///
3257
  /// C++11 [basic.link]p8:
3258
  ///   A type is said to have linkage if and only if:
3259
  ///     - it is a class or enumeration type that is named (or has a
3260
  ///       name for linkage purposes) and the name has linkage; ...
3261
  /// C++11 [dcl.typedef]p9:
3262
  ///   If the typedef declaration defines an unnamed class (or enum),
3263
  ///   the first typedef-name declared by the declaration to be that
3264
  ///   class type (or enum type) is used to denote the class type (or
3265
  ///   enum type) for linkage purposes only.
3266
  ///
3267
  /// C does not have an analogous rule, but the same concept is
3268
  /// nonetheless useful in some places.
3269
7.36M
  bool hasNameForLinkage() const {
3270
7.36M
    return (getDeclName() || 
getTypedefNameForAnonDecl()137k
);
3271
7.36M
  }
3272
3273
284k
  TypedefNameDecl *getTypedefNameForAnonDecl() const {
3274
284k
    return hasExtInfo() ? 
nullptr273
3275
284k
                        : 
TypedefNameDeclOrQualifier.get<TypedefNameDecl *>()283k
;
3276
284k
  }
3277
3278
  void setTypedefNameForAnonDecl(TypedefNameDecl *TDD);
3279
3280
  /// Retrieve the nested-name-specifier that qualifies the name of this
3281
  /// declaration, if it was present in the source.
3282
0
  NestedNameSpecifier *getQualifier() const {
3283
0
    return hasExtInfo() ? getExtInfo()->QualifierLoc.getNestedNameSpecifier()
3284
0
                        : nullptr;
3285
0
  }
3286
3287
  /// Retrieve the nested-name-specifier (with source-location
3288
  /// information) that qualifies the name of this declaration, if it was
3289
  /// present in the source.
3290
1.13M
  NestedNameSpecifierLoc getQualifierLoc() const {
3291
1.13M
    return hasExtInfo() ? 
getExtInfo()->QualifierLoc279
3292
1.13M
                        : 
NestedNameSpecifierLoc()1.13M
;
3293
1.13M
  }
3294
3295
  void setQualifierInfo(NestedNameSpecifierLoc QualifierLoc);
3296
3297
425k
  unsigned getNumTemplateParameterLists() const {
3298
425k
    return hasExtInfo() ? 
getExtInfo()->NumTemplParamLists96
:
0425k
;
3299
425k
  }
3300
3301
26
  TemplateParameterList *getTemplateParameterList(unsigned i) const {
3302
26
    assert(i < getNumTemplateParameterLists());
3303
26
    return getExtInfo()->TemplParamLists[i];
3304
26
  }
3305
3306
  void setTemplateParameterListsInfo(ASTContext &Context,
3307
                                     ArrayRef<TemplateParameterList *> TPLists);
3308
3309
  // Implement isa/cast/dyncast/etc.
3310
87.3M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3311
93.4M
  static bool classofKind(Kind K) { return K >= firstTag && 
K <= lastTag53.9M
; }
3312
3313
39.1k
  static DeclContext *castToDeclContext(const TagDecl *D) {
3314
39.1k
    return static_cast<DeclContext *>(const_cast<TagDecl*>(D));
3315
39.1k
  }
3316
3317
12
  static TagDecl *castFromDeclContext(const DeclContext *DC) {
3318
12
    return static_cast<TagDecl *>(const_cast<DeclContext*>(DC));
3319
12
  }
3320
};
3321
3322
/// Represents an enum.  In C++11, enums can be forward-declared
3323
/// with a fixed underlying type, and in C we allow them to be forward-declared
3324
/// with no underlying type as an extension.
3325
class EnumDecl : public TagDecl {
3326
  // This class stores some data in DeclContext::EnumDeclBits
3327
  // to save some space. Use the provided accessors to access it.
3328
3329
  /// This represent the integer type that the enum corresponds
3330
  /// to for code generation purposes.  Note that the enumerator constants may
3331
  /// have a different type than this does.
3332
  ///
3333
  /// If the underlying integer type was explicitly stated in the source
3334
  /// code, this is a TypeSourceInfo* for that type. Otherwise this type
3335
  /// was automatically deduced somehow, and this is a Type*.
3336
  ///
3337
  /// Normally if IsFixed(), this would contain a TypeSourceInfo*, but in
3338
  /// some cases it won't.
3339
  ///
3340
  /// The underlying type of an enumeration never has any qualifiers, so
3341
  /// we can get away with just storing a raw Type*, and thus save an
3342
  /// extra pointer when TypeSourceInfo is needed.
3343
  llvm::PointerUnion<const Type *, TypeSourceInfo *> IntegerType;
3344
3345
  /// The integer type that values of this type should
3346
  /// promote to.  In C, enumerators are generally of an integer type
3347
  /// directly, but gcc-style large enumerators (and all enumerators
3348
  /// in C++) are of the enum type instead.
3349
  QualType PromotionType;
3350
3351
  /// If this enumeration is an instantiation of a member enumeration
3352
  /// of a class template specialization, this is the member specialization
3353
  /// information.
3354
  MemberSpecializationInfo *SpecializationInfo = nullptr;
3355
3356
  /// Store the ODRHash after first calculation.
3357
  /// The corresponding flag HasODRHash is in EnumDeclBits
3358
  /// and can be accessed with the provided accessors.
3359
  unsigned ODRHash;
3360
3361
  EnumDecl(ASTContext &C, DeclContext *DC, SourceLocation StartLoc,
3362
           SourceLocation IdLoc, IdentifierInfo *Id, EnumDecl *PrevDecl,
3363
           bool Scoped, bool ScopedUsingClassTag, bool Fixed);
3364
3365
  void anchor() override;
3366
3367
  void setInstantiationOfMemberEnum(ASTContext &C, EnumDecl *ED,
3368
                                    TemplateSpecializationKind TSK);
3369
3370
  /// Sets the width in bits required to store all the
3371
  /// non-negative enumerators of this enum.
3372
106k
  void setNumPositiveBits(unsigned Num) {
3373
106k
    EnumDeclBits.NumPositiveBits = Num;
3374
106k
    assert(EnumDeclBits.NumPositiveBits == Num && "can't store this bitcount");
3375
106k
  }
3376
3377
  /// Returns the width in bits required to store all the
3378
  /// negative enumerators of this enum. (see getNumNegativeBits)
3379
106k
  void setNumNegativeBits(unsigned Num) { EnumDeclBits.NumNegativeBits = Num; }
3380
3381
  /// True if this tag declaration is a scoped enumeration. Only
3382
  /// possible in C++11 mode.
3383
55.2k
  void setScoped(bool Scoped = true) { EnumDeclBits.IsScoped = Scoped; }
3384
3385
  /// If this tag declaration is a scoped enum,
3386
  /// then this is true if the scoped enum was declared using the class
3387
  /// tag, false if it was declared with the struct tag. No meaning is
3388
  /// associated if this tag declaration is not a scoped enum.
3389
55.2k
  void setScopedUsingClassTag(bool ScopedUCT = true) {
3390
55.2k
    EnumDeclBits.IsScopedUsingClassTag = ScopedUCT;
3391
55.2k
  }
3392
3393
  /// True if this is an Objective-C, C++11, or
3394
  /// Microsoft-style enumeration with a fixed underlying type.
3395
55.2k
  void setFixed(bool Fixed = true) { EnumDeclBits.IsFixed = Fixed; }
3396
3397
  /// True if a valid hash is stored in ODRHash.
3398
421
  bool hasODRHash() const { return EnumDeclBits.HasODRHash; }
3399
55.5k
  void setHasODRHash(bool Hash = true) { EnumDeclBits.HasODRHash = Hash; }
3400
3401
public:
3402
  friend class ASTDeclReader;
3403
3404
480k
  EnumDecl *getCanonicalDecl() override {
3405
480k
    return cast<EnumDecl>(TagDecl::getCanonicalDecl());
3406
480k
  }
3407
0
  const EnumDecl *getCanonicalDecl() const {
3408
0
    return const_cast<EnumDecl*>(this)->getCanonicalDecl();
3409
0
  }
3410
3411
57.6k
  EnumDecl *getPreviousDecl() {
3412
57.6k
    return cast_or_null<EnumDecl>(
3413
57.6k
            static_cast<TagDecl *>(this)->getPreviousDecl());
3414
57.6k
  }
3415
52.2k
  const EnumDecl *getPreviousDecl() const {
3416
52.2k
    return const_cast<EnumDecl*>(this)->getPreviousDecl();
3417
52.2k
  }
3418
3419
394
  EnumDecl *getMostRecentDecl() {
3420
394
    return cast<EnumDecl>(static_cast<TagDecl *>(this)->getMostRecentDecl());
3421
394
  }
3422
0
  const EnumDecl *getMostRecentDecl() const {
3423
0
    return const_cast<EnumDecl*>(this)->getMostRecentDecl();
3424
0
  }
3425
3426
90.9k
  EnumDecl *getDefinition() const {
3427
90.9k
    return cast_or_null<EnumDecl>(TagDecl::getDefinition());
3428
90.9k
  }
3429
3430
  static EnumDecl *Create(ASTContext &C, DeclContext *DC,
3431
                          SourceLocation StartLoc, SourceLocation IdLoc,
3432
                          IdentifierInfo *Id, EnumDecl *PrevDecl,
3433
                          bool IsScoped, bool IsScopedUsingClassTag,
3434
                          bool IsFixed);
3435
  static EnumDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3436
3437
  /// When created, the EnumDecl corresponds to a
3438
  /// forward-declared enum. This method is used to mark the
3439
  /// declaration as being defined; its enumerators have already been
3440
  /// added (via DeclContext::addDecl). NewType is the new underlying
3441
  /// type of the enumeration type.
3442
  void completeDefinition(QualType NewType,
3443
                          QualType PromotionType,
3444
                          unsigned NumPositiveBits,
3445
                          unsigned NumNegativeBits);
3446
3447
  // Iterates through the enumerators of this enumeration.
3448
  using enumerator_iterator = specific_decl_iterator<EnumConstantDecl>;
3449
  using enumerator_range =
3450
      llvm::iterator_range<specific_decl_iterator<EnumConstantDecl>>;
3451
3452
9.30k
  enumerator_range enumerators() const {
3453
9.30k
    return enumerator_range(enumerator_begin(), enumerator_end());
3454
9.30k
  }
3455
3456
37.9k
  enumerator_iterator enumerator_begin() const {
3457
37.9k
    const EnumDecl *E = getDefinition();
3458
37.9k
    if (!E)
3459
208
      E = this;
3460
37.9k
    return enumerator_iterator(E->decls_begin());
3461
37.9k
  }
3462
3463
37.9k
  enumerator_iterator enumerator_end() const {
3464
37.9k
    const EnumDecl *E = getDefinition();
3465
37.9k
    if (!E)
3466
208
      E = this;
3467
37.9k
    return enumerator_iterator(E->decls_end());
3468
37.9k
  }
3469
3470
  /// Return the integer type that enumerators should promote to.
3471
26.4M
  QualType getPromotionType() const { return PromotionType; }
3472
3473
  /// Set the promotion type.
3474
9.81k
  void setPromotionType(QualType T) { PromotionType = T; }
3475
3476
  /// Return the integer type this enum decl corresponds to.
3477
  /// This returns a null QualType for an enum forward definition with no fixed
3478
  /// underlying type.
3479
1.77M
  QualType getIntegerType() const {
3480
1.77M
    if (!IntegerType)
3481
32
      return QualType();
3482
1.77M
    if (const Type *T = IntegerType.dyn_cast<const Type*>())
3483
1.56M
      return QualType(T, 0);
3484
206k
    return IntegerType.get<TypeSourceInfo*>()->getType().getUnqualifiedType();
3485
206k
  }
3486
3487
  /// Set the underlying integer type.
3488
2.19k
  void setIntegerType(QualType T) { IntegerType = T.getTypePtrOrNull(); }
3489
3490
  /// Set the underlying integer type source info.
3491
7.87k
  void setIntegerTypeSourceInfo(TypeSourceInfo *TInfo) { IntegerType = TInfo; }
3492
3493
  /// Return the type source info for the underlying integer type,
3494
  /// if no type source info exists, return 0.
3495
2.06k
  TypeSourceInfo *getIntegerTypeSourceInfo() const {
3496
2.06k
    return IntegerType.dyn_cast<TypeSourceInfo*>();
3497
2.06k
  }
3498
3499
  /// Retrieve the source range that covers the underlying type if
3500
  /// specified.
3501
  SourceRange getIntegerTypeRange() const LLVM_READONLY;
3502
3503
  /// Returns the width in bits required to store all the
3504
  /// non-negative enumerators of this enum.
3505
78.6k
  unsigned getNumPositiveBits() const { return EnumDeclBits.NumPositiveBits; }
3506
3507
  /// Returns the width in bits required to store all the
3508
  /// negative enumerators of this enum.  These widths include
3509
  /// the rightmost leading 1;  that is:
3510
  ///
3511
  /// MOST NEGATIVE ENUMERATOR     PATTERN     NUM NEGATIVE BITS
3512
  /// ------------------------     -------     -----------------
3513
  ///                       -1     1111111                     1
3514
  ///                      -10     1110110                     5
3515
  ///                     -101     1001011                     8
3516
78.5k
  unsigned getNumNegativeBits() const { return EnumDeclBits.NumNegativeBits; }
3517
3518
  /// Returns true if this is a C++11 scoped enumeration.
3519
50.7M
  bool isScoped() const { return EnumDeclBits.IsScoped; }
3520
3521
  /// Returns true if this is a C++11 scoped enumeration.
3522
5.74k
  bool isScopedUsingClassTag() const {
3523
5.74k
    return EnumDeclBits.IsScopedUsingClassTag;
3524
5.74k
  }
3525
3526
  /// Returns true if this is an Objective-C, C++11, or
3527
  /// Microsoft-style enumeration with a fixed underlying type.
3528
15.2M
  bool isFixed() const { return EnumDeclBits.IsFixed; }
3529
3530
  unsigned getODRHash();
3531
3532
  /// Returns true if this can be considered a complete type.
3533
35.7M
  bool isComplete() const {
3534
35.7M
    // IntegerType is set for fixed type enums and non-fixed but implicitly
3535
35.7M
    // int-sized Microsoft enums.
3536
35.7M
    return isCompleteDefinition() || 
IntegerType206k
;
3537
35.7M
  }
3538
3539
  /// Returns true if this enum is either annotated with
3540
  /// enum_extensibility(closed) or isn't annotated with enum_extensibility.
3541
  bool isClosed() const;
3542
3543
  /// Returns true if this enum is annotated with flag_enum and isn't annotated
3544
  /// with enum_extensibility(open).
3545
  bool isClosedFlag() const;
3546
3547
  /// Returns true if this enum is annotated with neither flag_enum nor
3548
  /// enum_extensibility(open).
3549
  bool isClosedNonFlag() const;
3550
3551
  /// Retrieve the enum definition from which this enumeration could
3552
  /// be instantiated, if it is an instantiation (rather than a non-template).
3553
  EnumDecl *getTemplateInstantiationPattern() const;
3554
3555
  /// Returns the enumeration (declared within the template)
3556
  /// from which this enumeration type was instantiated, or NULL if
3557
  /// this enumeration was not instantiated from any template.
3558
  EnumDecl *getInstantiatedFromMemberEnum() const;
3559
3560
  /// If this enumeration is a member of a specialization of a
3561
  /// templated class, determine what kind of template specialization
3562
  /// or instantiation this is.
3563
  TemplateSpecializationKind getTemplateSpecializationKind() const;
3564
3565
  /// For an enumeration member that was instantiated from a member
3566
  /// enumeration of a templated class, set the template specialiation kind.
3567
  void setTemplateSpecializationKind(TemplateSpecializationKind TSK,
3568
                        SourceLocation PointOfInstantiation = SourceLocation());
3569
3570
  /// If this enumeration is an instantiation of a member enumeration of
3571
  /// a class template specialization, retrieves the member specialization
3572
  /// information.
3573
10.4k
  MemberSpecializationInfo *getMemberSpecializationInfo() const {
3574
10.4k
    return SpecializationInfo;
3575
10.4k
  }
3576
3577
  /// Specify that this enumeration is an instantiation of the
3578
  /// member enumeration ED.
3579
  void setInstantiationOfMemberEnum(EnumDecl *ED,
3580
5.38k
                                    TemplateSpecializationKind TSK) {
3581
5.38k
    setInstantiationOfMemberEnum(getASTContext(), ED, TSK);
3582
5.38k
  }
3583
3584
43.2M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3585
134M
  static bool classofKind(Kind K) { return K == Enum; }
3586
};
3587
3588
/// Represents a struct/union/class.  For example:
3589
///   struct X;                  // Forward declaration, no "body".
3590
///   union Y { int A, B; };     // Has body with members A and B (FieldDecls).
3591
/// This decl will be marked invalid if *any* members are invalid.
3592
class RecordDecl : public TagDecl {
3593
  // This class stores some data in DeclContext::RecordDeclBits
3594
  // to save some space. Use the provided accessors to access it.
3595
public:
3596
  friend class DeclContext;
3597
  /// Enum that represents the different ways arguments are passed to and
3598
  /// returned from function calls. This takes into account the target-specific
3599
  /// and version-specific rules along with the rules determined by the
3600
  /// language.
3601
  enum ArgPassingKind : unsigned {
3602
    /// The argument of this type can be passed directly in registers.
3603
    APK_CanPassInRegs,
3604
3605
    /// The argument of this type cannot be passed directly in registers.
3606
    /// Records containing this type as a subobject are not forced to be passed
3607
    /// indirectly. This value is used only in C++. This value is required by
3608
    /// C++ because, in uncommon situations, it is possible for a class to have
3609
    /// only trivial copy/move constructors even when one of its subobjects has
3610
    /// a non-trivial copy/move constructor (if e.g. the corresponding copy/move
3611
    /// constructor in the derived class is deleted).
3612
    APK_CannotPassInRegs,
3613
3614
    /// The argument of this type cannot be passed directly in registers.
3615
    /// Records containing this type as a subobject are forced to be passed
3616
    /// indirectly.
3617
    APK_CanNeverPassInRegs
3618
  };
3619
3620
protected:
3621
  RecordDecl(Kind DK, TagKind TK, const ASTContext &C, DeclContext *DC,
3622
             SourceLocation StartLoc, SourceLocation IdLoc,
3623
             IdentifierInfo *Id, RecordDecl *PrevDecl);
3624
3625
public:
3626
  static RecordDecl *Create(const ASTContext &C, TagKind TK, DeclContext *DC,
3627
                            SourceLocation StartLoc, SourceLocation IdLoc,
3628
                            IdentifierInfo *Id, RecordDecl* PrevDecl = nullptr);
3629
  static RecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID);
3630
3631
5.16M
  RecordDecl *getPreviousDecl() {
3632
5.16M
    return cast_or_null<RecordDecl>(
3633
5.16M
            static_cast<TagDecl *>(this)->getPreviousDecl());
3634
5.16M
  }
3635
2.12M
  const RecordDecl *getPreviousDecl() const {
3636
2.12M
    return const_cast<RecordDecl*>(this)->getPreviousDecl();
3637
2.12M
  }
3638
3639
320M
  RecordDecl *getMostRecentDecl() {
3640
320M
    return cast<RecordDecl>(static_cast<TagDecl *>(this)->getMostRecentDecl());
3641
320M
  }
3642
0
  const RecordDecl *getMostRecentDecl() const {
3643
0
    return const_cast<RecordDecl*>(this)->getMostRecentDecl();
3644
0
  }
3645
3646
3.75M
  bool hasFlexibleArrayMember() const {
3647
3.75M
    return RecordDeclBits.HasFlexibleArrayMember;
3648
3.75M
  }
3649
3650
4.40M
  void setHasFlexibleArrayMember(bool V) {
3651
4.40M
    RecordDeclBits.HasFlexibleArrayMember = V;
3652
4.40M
  }
3653
3654
  /// Whether this is an anonymous struct or union. To be an anonymous
3655
  /// struct or union, it must have been declared without a name and
3656
  /// there must be no objects of this type declared, e.g.,
3657
  /// @code
3658
  ///   union { int i; float f; };
3659
  /// @endcode
3660
  /// is an anonymous union but neither of the following are:
3661
  /// @code
3662
  ///  union X { int i; float f; };
3663
  ///  union { int i; float f; } obj;
3664
  /// @endcode
3665
6.88M
  bool isAnonymousStructOrUnion() const {
3666
6.88M
    return RecordDeclBits.AnonymousStructOrUnion;
3667
6.88M
  }
3668
3669
4.40M
  void setAnonymousStructOrUnion(bool Anon) {
3670
4.40M
    RecordDeclBits.AnonymousStructOrUnion = Anon;
3671
4.40M
  }
3672
3673
1.40M
  bool hasObjectMember() const { return RecordDeclBits.HasObjectMember; }
3674
4.40M
  void setHasObjectMember(bool val) { RecordDeclBits.HasObjectMember = val; }
3675
3676
1.40M
  bool hasVolatileMember() const { return RecordDeclBits.HasVolatileMember; }
3677
3678
4.45M
  void setHasVolatileMember(bool val) {
3679
4.45M
    RecordDeclBits.HasVolatileMember = val;
3680
4.45M
  }
3681
3682
30.7k
  bool hasLoadedFieldsFromExternalStorage() const {
3683
30.7k
    return RecordDeclBits.LoadedFieldsFromExternalStorage;
3684
30.7k
  }
3685
3686
4.37M
  void setHasLoadedFieldsFromExternalStorage(bool val) const {
3687
4.37M
    RecordDeclBits.LoadedFieldsFromExternalStorage = val;
3688
4.37M
  }
3689
3690
  /// Functions to query basic properties of non-trivial C structs.
3691
169k
  bool isNonTrivialToPrimitiveDefaultInitialize() const {
3692
169k
    return RecordDeclBits.NonTrivialToPrimitiveDefaultInitialize;
3693
169k
  }
3694
3695
4.40M
  void setNonTrivialToPrimitiveDefaultInitialize(bool V) {
3696
4.40M
    RecordDeclBits.NonTrivialToPrimitiveDefaultInitialize = V;
3697
4.40M
  }
3698
3699
233k
  bool isNonTrivialToPrimitiveCopy() const {
3700
233k
    return RecordDeclBits.NonTrivialToPrimitiveCopy;
3701
233k
  }
3702
3703
4.40M
  void setNonTrivialToPrimitiveCopy(bool V) {
3704
4.40M
    RecordDeclBits.NonTrivialToPrimitiveCopy = V;
3705
4.40M
  }
3706
3707
153k
  bool isNonTrivialToPrimitiveDestroy() const {
3708
153k
    return RecordDeclBits.NonTrivialToPrimitiveDestroy;
3709
153k
  }
3710
3711
4.40M
  void setNonTrivialToPrimitiveDestroy(bool V) {
3712
4.40M
    RecordDeclBits.NonTrivialToPrimitiveDestroy = V;
3713
4.40M
  }
3714
3715
  /// Determine whether this class can be passed in registers. In C++ mode,
3716
  /// it must have at least one trivial, non-deleted copy or move constructor.
3717
  /// FIXME: This should be set as part of completeDefinition.
3718
26.9k
  bool canPassInRegisters() const {
3719
26.9k
    return getArgPassingRestrictions() == APK_CanPassInRegs;
3720
26.9k
  }
3721
3722
2.94M
  ArgPassingKind getArgPassingRestrictions() const {
3723
2.94M
    return static_cast<ArgPassingKind>(RecordDeclBits.ArgPassingRestrictions);
3724
2.94M
  }
3725
3726
6.22M
  void setArgPassingRestrictions(ArgPassingKind Kind) {
3727
6.22M
    RecordDeclBits.ArgPassingRestrictions = Kind;
3728
6.22M
  }
3729
3730
68.4k
  bool isParamDestroyedInCallee() const {
3731
68.4k
    return RecordDeclBits.ParamDestroyedInCallee;
3732
68.4k
  }
3733
3734
4.50M
  void setParamDestroyedInCallee(bool V) {
3735
4.50M
    RecordDeclBits.ParamDestroyedInCallee = V;
3736
4.50M
  }
3737
3738
  /// Determines whether this declaration represents the
3739
  /// injected class name.
3740
  ///
3741
  /// The injected class name in C++ is the name of the class that
3742
  /// appears inside the class itself. For example:
3743
  ///
3744
  /// \code
3745
  /// struct C {
3746
  ///   // C is implicitly declared here as a synonym for the class name.
3747
  /// };
3748
  ///
3749
  /// C::C c; // same as "C c;"
3750
  /// \endcode
3751
  bool isInjectedClassName() const;
3752
3753
  /// Determine whether this record is a class describing a lambda
3754
  /// function object.
3755
  bool isLambda() const;
3756
3757
  /// Determine whether this record is a record for captured variables in
3758
  /// CapturedStmt construct.
3759
  bool isCapturedRecord() const;
3760
3761
  /// Mark the record as a record for captured variables in CapturedStmt
3762
  /// construct.
3763
  void setCapturedRecord();
3764
3765
  /// Returns the RecordDecl that actually defines
3766
  ///  this struct/union/class.  When determining whether or not a
3767
  ///  struct/union/class is completely defined, one should use this
3768
  ///  method as opposed to 'isCompleteDefinition'.
3769
  ///  'isCompleteDefinition' indicates whether or not a specific
3770
  ///  RecordDecl is a completed definition, not whether or not the
3771
  ///  record type is defined.  This method returns NULL if there is
3772
  ///  no RecordDecl that defines the struct/union/tag.
3773
8.06M
  RecordDecl *getDefinition() const {
3774
8.06M
    return cast_or_null<RecordDecl>(TagDecl::getDefinition());
3775
8.06M
  }
3776
3777
  // Iterator access to field members. The field iterator only visits
3778
  // the non-static data members of this class, ignoring any static
3779
  // data members, functions, constructors, destructors, etc.
3780
  using field_iterator = specific_decl_iterator<FieldDecl>;
3781
  using field_range = llvm::iterator_range<specific_decl_iterator<FieldDecl>>;
3782
3783
3.27M
  field_range fields() const { return field_range(field_begin(), field_end()); }
3784
  field_iterator field_begin() const;
3785
3786
5.88M
  field_iterator field_end() const {
3787
5.88M
    return field_iterator(decl_iterator());
3788
5.88M
  }
3789
3790
  // Whether there are any fields (non-static data members) in this record.
3791
692k
  bool field_empty() const {
3792
692k
    return field_begin() == field_end();
3793
692k
  }
3794
3795
  /// Note that the definition of this type is now complete.
3796
  virtual void completeDefinition();
3797
3798
34.2M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3799
62.0M
  static bool classofKind(Kind K) {
3800
62.0M
    return K >= firstRecord && 
K <= lastRecord54.7M
;
3801
62.0M
  }
3802
3803
  /// Get whether or not this is an ms_struct which can
3804
  /// be turned on with an attribute, pragma, or -mms-bitfields
3805
  /// commandline option.
3806
  bool isMsStruct(const ASTContext &C) const;
3807
3808
  /// Whether we are allowed to insert extra padding between fields.
3809
  /// These padding are added to help AddressSanitizer detect
3810
  /// intra-object-overflow bugs.
3811
  bool mayInsertExtraPadding(bool EmitRemark = false) const;
3812
3813
  /// Finds the first data member which has a name.
3814
  /// nullptr is returned if no named data member exists.
3815
  const FieldDecl *findFirstNamedDataMember() const;
3816
3817
private:
3818
  /// Deserialize just the fields.
3819
  void LoadFieldsFromExternalStorage() const;
3820
};
3821
3822
class FileScopeAsmDecl : public Decl {
3823
  StringLiteral *AsmString;
3824
  SourceLocation RParenLoc;
3825
3826
  FileScopeAsmDecl(DeclContext *DC, StringLiteral *asmstring,
3827
                   SourceLocation StartL, SourceLocation EndL)
3828
1.09k
    : Decl(FileScopeAsm, DC, StartL), AsmString(asmstring), RParenLoc(EndL) {}
3829
3830
  virtual void anchor();
3831
3832
public:
3833
  static FileScopeAsmDecl *Create(ASTContext &C, DeclContext *DC,
3834
                                  StringLiteral *Str, SourceLocation AsmLoc,
3835
                                  SourceLocation RParenLoc);
3836
3837
  static FileScopeAsmDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3838
3839
3
  SourceLocation getAsmLoc() const { return getLocation(); }
3840
62
  SourceLocation getRParenLoc() const { return RParenLoc; }
3841
113
  void setRParenLoc(SourceLocation L) { RParenLoc = L; }
3842
3
  SourceRange getSourceRange() const override LLVM_READONLY {
3843
3
    return SourceRange(getAsmLoc(), getRParenLoc());
3844
3
  }
3845
3846
3
  const StringLiteral *getAsmString() const { return AsmString; }
3847
979
  StringLiteral *getAsmString() { return AsmString; }
3848
113
  void setAsmString(StringLiteral *Asm) { AsmString = Asm; }
3849
3850
729k
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3851
729k
  static bool classofKind(Kind K) { return K == FileScopeAsm; }
3852
};
3853
3854
/// Represents a block literal declaration, which is like an
3855
/// unnamed FunctionDecl.  For example:
3856
/// ^{ statement-body }   or   ^(int arg1, float arg2){ statement-body }
3857
class BlockDecl : public Decl, public DeclContext {
3858
  // This class stores some data in DeclContext::BlockDeclBits
3859
  // to save some space. Use the provided accessors to access it.
3860
public:
3861
  /// A class which contains all the information about a particular
3862
  /// captured value.
3863
  class Capture {
3864
    enum {
3865
      flag_isByRef = 0x1,
3866
      flag_isNested = 0x2
3867
    };
3868
3869
    /// The variable being captured.
3870
    llvm::PointerIntPair<VarDecl*, 2> VariableAndFlags;
3871
3872
    /// The copy expression, expressed in terms of a DeclRef (or
3873
    /// BlockDeclRef) to the captured variable.  Only required if the
3874
    /// variable has a C++ class type.
3875
    Expr *CopyExpr;
3876
3877
  public:
3878
    Capture(VarDecl *variable, bool byRef, bool nested, Expr *copy)
3879
      : VariableAndFlags(variable,
3880
                  (byRef ? flag_isByRef : 0) | (nested ? flag_isNested : 0)),
3881
2.82k
        CopyExpr(copy) {}
3882
3883
    /// The variable being captured.
3884
39.1k
    VarDecl *getVariable() const { return VariableAndFlags.getPointer(); }
3885
3886
    /// Whether this is a "by ref" capture, i.e. a capture of a __block
3887
    /// variable.
3888
8.01k
    bool isByRef() const { return VariableAndFlags.getInt() & flag_isByRef; }
3889
3890
10.8k
    bool isEscapingByref() const {
3891
10.8k
      return getVariable()->isEscapingByref();
3892
10.8k
    }
3893
3894
0
    bool isNonEscapingByref() const {
3895
0
      return getVariable()->isNonEscapingByref();
3896
0
    }
3897
3898
    /// Whether this is a nested capture, i.e. the variable captured
3899
    /// is not from outside the immediately enclosing function/block.
3900
3.41k
    bool isNested() const { return VariableAndFlags.getInt() & flag_isNested; }
3901
3902
1.59k
    bool hasCopyExpr() const { return CopyExpr != nullptr; }
3903
6.17k
    Expr *getCopyExpr() const { return CopyExpr; }
3904
0
    void setCopyExpr(Expr *e) { CopyExpr = e; }
3905
  };
3906
3907
private:
3908
  /// A new[]'d array of pointers to ParmVarDecls for the formal
3909
  /// parameters of this function.  This is null if a prototype or if there are
3910
  /// no formals.
3911
  ParmVarDecl **ParamInfo = nullptr;
3912
  unsigned NumParams = 0;
3913
3914
  Stmt *Body = nullptr;
3915
  TypeSourceInfo *SignatureAsWritten = nullptr;
3916
3917
  const Capture *Captures = nullptr;
3918
  unsigned NumCaptures = 0;
3919
3920
  unsigned ManglingNumber = 0;
3921
  Decl *ManglingContextDecl = nullptr;
3922
3923
protected:
3924
  BlockDecl(DeclContext *DC, SourceLocation CaretLoc);
3925
3926
public:
3927
  static BlockDecl *Create(ASTContext &C, DeclContext *DC, SourceLocation L);
3928
  static BlockDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3929
3930
21.2k
  SourceLocation getCaretLocation() const { return getLocation(); }
3931
3932
207
  bool isVariadic() const { return BlockDeclBits.IsVariadic; }
3933
5.42k
  void setIsVariadic(bool value) { BlockDeclBits.IsVariadic = value; }
3934
3935
0
  CompoundStmt *getCompoundBody() const { return (CompoundStmt*) Body; }
3936
22.7k
  Stmt *getBody() const override { return (Stmt*) Body; }
3937
2.70k
  void setBody(CompoundStmt *B) { Body = (Stmt*) B; }
3938
3939
2.67k
  void setSignatureAsWritten(TypeSourceInfo *Sig) { SignatureAsWritten = Sig; }
3940
983
  TypeSourceInfo *getSignatureAsWritten() const { return SignatureAsWritten; }
3941
3942
  // ArrayRef access to formal parameters.
3943
5.82k
  ArrayRef<ParmVarDecl *> parameters() const {
3944
5.82k
    return {ParamInfo, getNumParams()};
3945
5.82k
  }
3946
5.97k
  MutableArrayRef<ParmVarDecl *> parameters() {
3947
5.97k
    return {ParamInfo, getNumParams()};
3948
5.97k
  }
3949
3950
  // Iterator access to formal parameters.
3951
  using param_iterator = MutableArrayRef<ParmVarDecl *>::iterator;
3952
  using param_const_iterator = ArrayRef<ParmVarDecl *>::const_iterator;
3953
3954
157
  bool param_empty() const { return parameters().empty(); }
3955
55
  param_iterator param_begin() { return parameters().begin(); }
3956
23
  param_iterator param_end() { return parameters().end(); }
3957
1.17k
  param_const_iterator param_begin() const { return parameters().begin(); }
3958
1.17k
  param_const_iterator param_end() const { return parameters().end(); }
3959
16
  size_t param_size() const { return parameters().size(); }
3960
3961
11.8k
  unsigned getNumParams() const { return NumParams; }
3962
3963
20
  const ParmVarDecl *getParamDecl(unsigned i) const {
3964
20
    assert(i < getNumParams() && "Illegal param #");
3965
20
    return ParamInfo[i];
3966
20
  }
3967
16
  ParmVarDecl *getParamDecl(unsigned i) {
3968
16
    assert(i < getNumParams() && "Illegal param #");
3969
16
    return ParamInfo[i];
3970
16
  }
3971
3972
  void setParams(ArrayRef<ParmVarDecl *> NewParamInfo);
3973
3974
  /// True if this block (or its nested blocks) captures
3975
  /// anything of local storage from its enclosing scopes.
3976
6.99k
  bool hasCaptures() const { return NumCaptures || 
capturesCXXThis()2.72k
; }
3977
3978
  /// Returns the number of captured variables.
3979
  /// Does not include an entry for 'this'.
3980
16
  unsigned getNumCaptures() const { return NumCaptures; }
3981
3982
  using capture_const_iterator = ArrayRef<Capture>::const_iterator;
3983
3984
15.6k
  ArrayRef<Capture> captures() const { return {Captures, NumCaptures}; }
3985
3986
1.24k
  capture_const_iterator capture_begin() const { return captures().begin(); }
3987
1.23k
  capture_const_iterator capture_end() const { return captures().end(); }
3988
3989
6.53k
  bool capturesCXXThis() const { return BlockDeclBits.CapturesCXXThis; }
3990
5.42k
  void setCapturesCXXThis(bool B = true) { BlockDeclBits.CapturesCXXThis = B; }
3991
3992
98
  bool blockMissingReturnType() const {
3993
98
    return BlockDeclBits.BlockMissingReturnType;
3994
98
  }
3995
3996
2.93k
  void setBlockMissingReturnType(bool val = true) {
3997
2.93k
    BlockDeclBits.BlockMissingReturnType = val;
3998
2.93k
  }
3999
4000
3.41k
  bool isConversionFromLambda() const {
4001
3.41k
    return BlockDeclBits.IsConversionFromLambda;
4002
3.41k
  }
4003
4004
2.75k
  void setIsConversionFromLambda(bool val = true) {
4005
2.75k
    BlockDeclBits.IsConversionFromLambda = val;
4006
2.75k
  }
4007
4008
5.74k
  bool doesNotEscape() const { return BlockDeclBits.DoesNotEscape; }
4009
2.76k
  void setDoesNotEscape(bool B = true) { BlockDeclBits.DoesNotEscape = B; }
4010
4011
  bool capturesVariable(const VarDecl *var) const;
4012
4013
  void setCaptures(ASTContext &Context, ArrayRef<Capture> Captures,
4014
                   bool CapturesCXXThis);
4015
4016
144
   unsigned getBlockManglingNumber() const {
4017
144
     return ManglingNumber;
4018
144
   }
4019
4020
468
   Decl *getBlockManglingContextDecl() const {
4021
468
     return ManglingContextDecl;
4022
468
   }
4023
4024
204
  void setBlockMangling(unsigned Number, Decl *Ctx) {
4025
204
    ManglingNumber = Number;
4026
204
    ManglingContextDecl = Ctx;
4027
204
  }
4028
4029
  SourceRange getSourceRange() const override LLVM_READONLY;
4030
4031
  // Implement isa/cast/dyncast/etc.
4032
25.2M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
4033
90.4M
  static bool classofKind(Kind K) { return K == Block; }
4034
36
  static DeclContext *castToDeclContext(const BlockDecl *D) {
4035
36
    return static_cast<DeclContext *>(const_cast<BlockDecl*>(D));
4036
36
  }
4037
0
  static BlockDecl *castFromDeclContext(const DeclContext *DC) {
4038
0
    return static_cast<BlockDecl *>(const_cast<DeclContext*>(DC));
4039
0
  }
4040
};
4041
4042
/// Represents the body of a CapturedStmt, and serves as its DeclContext.
4043
class CapturedDecl final
4044
    : public Decl,
4045
      public DeclContext,
4046
      private llvm::TrailingObjects<CapturedDecl, ImplicitParamDecl *> {
4047
protected:
4048
0
  size_t numTrailingObjects(OverloadToken<ImplicitParamDecl>) {
4049
0
    return NumParams;
4050
0
  }
4051
4052
private:
4053
  /// The number of parameters to the outlined function.
4054
  unsigned NumParams;
4055
4056
  /// The position of context parameter in list of parameters.
4057
  unsigned ContextParam;
4058
4059
  /// The body of the outlined function.
4060
  llvm::PointerIntPair<Stmt *, 1, bool> BodyAndNothrow;
4061
4062
  explicit CapturedDecl(DeclContext *DC, unsigned NumParams);
4063
4064
510k
  ImplicitParamDecl *const *getParams() const {
4065
510k
    return getTrailingObjects<ImplicitParamDecl *>();
4066
510k
  }
4067
4068
1.08M
  ImplicitParamDecl **getParams() {
4069
1.08M
    return getTrailingObjects<ImplicitParamDecl *>();
4070
1.08M
  }
4071
4072
public:
4073
  friend class ASTDeclReader;
4074
  friend class ASTDeclWriter;
4075
  friend TrailingObjects;
4076
4077
  static CapturedDecl *Create(ASTContext &C, DeclContext *DC,
4078
                              unsigned NumParams);
4079
  static CapturedDecl *CreateDeserialized(ASTContext &C, unsigned ID,
4080
                                          unsigned NumParams);
4081
4082
  Stmt *getBody() const override;
4083
  void setBody(Stmt *B);
4084
4085
  bool isNothrow() const;
4086
  void setNothrow(bool Nothrow = true);
4087
4088
107k
  unsigned getNumParams() const { return NumParams; }
4089
4090
392k
  ImplicitParamDecl *getParam(unsigned i) const {
4091
392k
    assert(i < NumParams);
4092
392k
    return getParams()[i];
4093
392k
  }
4094
1.08M
  void setParam(unsigned i, ImplicitParamDecl *P) {
4095
1.08M
    assert(i < NumParams);
4096
1.08M
    getParams()[i] = P;
4097
1.08M
  }
4098
4099
  // ArrayRef interface to parameters.
4100
0
  ArrayRef<ImplicitParamDecl *> parameters() const {
4101
0
    return {getParams(), getNumParams()};
4102
0
  }
4103
0
  MutableArrayRef<ImplicitParamDecl *> parameters() {
4104
0
    return {getParams(), getNumParams()};
4105
0
  }
4106
4107
  /// Retrieve the parameter containing captured variables.
4108
293k
  ImplicitParamDecl *getContextParam() const {
4109
293k
    assert(ContextParam < NumParams);
4110
293k
    return getParam(ContextParam);
4111
293k
  }
4112
312k
  void setContextParam(unsigned i, ImplicitParamDecl *P) {
4113
312k
    assert(i < NumParams);
4114
312k
    ContextParam = i;
4115
312k
    setParam(i, P);
4116
312k
  }
4117
88.1k
  unsigned getContextParamPosition() const { return ContextParam; }
4118
4119
  using param_iterator = ImplicitParamDecl *const *;
4120
  using param_range = llvm::iterator_range<param_iterator>;
4121
4122
  /// Retrieve an iterator pointing to the first parameter decl.
4123
90.1k
  param_iterator param_begin() const { return getParams(); }
4124
  /// Retrieve an iterator one past the last parameter decl.
4125
27.7k
  param_iterator param_end() const { return getParams() + NumParams; }
4126
4127
  // Implement isa/cast/dyncast/etc.
4128
313k
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
4129
87.6M
  static bool classofKind(Kind K) { return K == Captured; }
4130
293k
  static DeclContext *castToDeclContext(const CapturedDecl *D) {
4131
293k
    return static_cast<DeclContext *>(const_cast<CapturedDecl *>(D));
4132
293k
  }
4133
0
  static CapturedDecl *castFromDeclContext(const DeclContext *DC) {
4134
0
    return static_cast<CapturedDecl *>(const_cast<DeclContext *>(DC));
4135
0
  }
4136
};
4137
4138
/// Describes a module import declaration, which makes the contents
4139
/// of the named module visible in the current translation unit.
4140
///
4141
/// An import declaration imports the named module (or submodule). For example:
4142
/// \code
4143
///   @import std.vector;
4144
/// \endcode
4145
///
4146
/// Import declarations can also be implicitly generated from
4147
/// \#include/\#import directives.
4148
class ImportDecl final : public Decl,
4149
                         llvm::TrailingObjects<ImportDecl, SourceLocation> {
4150
  friend class ASTContext;
4151
  friend class ASTDeclReader;
4152
  friend class ASTReader;
4153
  friend TrailingObjects;
4154
4155
  /// The imported module, along with a bit that indicates whether
4156
  /// we have source-location information for each identifier in the module
4157
  /// name.
4158
  ///
4159
  /// When the bit is false, we only have a single source location for the
4160
  /// end of the import declaration.
4161
  llvm::PointerIntPair<Module *, 1, bool> ImportedAndComplete;
4162
4163
  /// The next import in the list of imports local to the translation
4164
  /// unit being parsed (not loaded from an AST file).
4165
  ImportDecl *NextLocalImport = nullptr;
4166
4167
  ImportDecl(DeclContext *DC, SourceLocation StartLoc, Module *Imported,
4168
             ArrayRef<SourceLocation> IdentifierLocs);
4169
4170
  ImportDecl(DeclContext *DC, SourceLocation StartLoc, Module *Imported,
4171
             SourceLocation EndLoc);
4172
4173
152
  ImportDecl(EmptyShell Empty) : Decl(Import, Empty) {}
4174
4175
public:
4176
  /// Create a new module import declaration.
4177
  static ImportDecl *Create(ASTContext &C, DeclContext *DC,
4178
                            SourceLocation StartLoc, Module *Imported,
4179
                            ArrayRef<SourceLocation> IdentifierLocs);
4180
4181
  /// Create a new module import declaration for an implicitly-generated
4182
  /// import.
4183
  static ImportDecl *CreateImplicit(ASTContext &C, DeclContext *DC,
4184
                                    SourceLocation StartLoc, Module *Imported,
4185
                                    SourceLocation EndLoc);
4186
4187
  /// Create a new, deserialized module import declaration.
4188
  static ImportDecl *CreateDeserialized(ASTContext &C, unsigned ID,
4189
                                        unsigned NumLocations);
4190
4191
  /// Retrieve the module that was imported by the import declaration.
4192
5.12k
  Module *getImportedModule() const { return ImportedAndComplete.getPointer(); }
4193
4194
  /// Retrieves the locations of each of the identifiers that make up
4195
  /// the complete module name in the import declaration.
4196
  ///
4197
  /// This will return an empty array if the locations of the individual
4198
  /// identifiers aren't available.
4199
  ArrayRef<SourceLocation> getIdentifierLocs() const;
4200
4201
  SourceRange getSourceRange() const override LLVM_READONLY;
4202
4203
27.7M
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
4204
27.7M
  static bool classofKind(Kind K) { return K == Import; }
4205
};
4206
4207
/// Represents a C++ Modules TS module export declaration.
4208
///
4209
/// For example:
4210
/// \code
4211
///   export void foo();
4212
/// \endcode
4213
class ExportDecl final : public Decl, public DeclContext {
4214
  virtual void anchor();
4215
4216
private:
4217
  friend class ASTDeclReader;
4218
4219
  /// The source location for the right brace (if valid).
4220
  SourceLocation RBraceLoc;
4221
4222
  ExportDecl(DeclContext *DC, SourceLocation ExportLoc)
4223
      : Decl(Export, DC, ExportLoc), DeclContext(Export),
4224
82
        RBraceLoc(SourceLocation()) {}
4225
4226
public:
4227
  static ExportDecl *Create(ASTContext &C, DeclContext *DC,
4228
                            SourceLocation ExportLoc);
4229
  static ExportDecl *CreateDeserialized(ASTContext &C, unsigned ID);
4230
4231
0
  SourceLocation getExportLoc() const { return getLocation(); }
4232
29
  SourceLocation getRBraceLoc() const { return RBraceLoc; }
4233
16
  void setRBraceLoc(SourceLocation L) { RBraceLoc = L; }
4234
4235
0
  SourceLocation getEndLoc() const LLVM_READONLY {
4236
0
    if (RBraceLoc.isValid())
4237
0
      return RBraceLoc;
4238
0
    // No braces: get the end location of the (only) declaration in context
4239
0
    // (if present).
4240
0
    return decls_empty() ? getLocation() : decls_begin()->getEndLoc();
4241
0
  }
4242
4243
0
  SourceRange getSourceRange() const override LLVM_READONLY {
4244
0
    return SourceRange(getLocation(), getEndLoc());
4245
0
  }
4246
4247
0
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
4248
7.21k
  static bool classofKind(Kind K) { return K == Export; }
4249
0
  static DeclContext *castToDeclContext(const ExportDecl *D) {
4250
0
    return static_cast<DeclContext *>(const_cast<ExportDecl*>(D));
4251
0
  }
4252
0
  static ExportDecl *castFromDeclContext(const DeclContext *DC) {
4253
0
    return static_cast<ExportDecl *>(const_cast<DeclContext*>(DC));
4254
0
  }
4255
};
4256
4257
/// Represents an empty-declaration.
4258
class EmptyDecl : public Decl {
4259
2.54k
  EmptyDecl(DeclContext *DC, SourceLocation L) : Decl(Empty, DC, L) {}
4260
4261
  virtual void anchor();
4262
4263
public:
4264
  static EmptyDecl *Create(ASTContext &C, DeclContext *DC,
4265
                           SourceLocation L);
4266
  static EmptyDecl *CreateDeserialized(ASTContext &C, unsigned ID);
4267
4268
126
  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
4269
126
  static bool classofKind(Kind K) { return K == Empty; }
4270
};
4271
4272
/// Insertion operator for diagnostics.  This allows sending NamedDecl's
4273
/// into a diagnostic with <<.
4274
inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
4275
167k
                                           const NamedDecl* ND) {
4276
167k
  DB.AddTaggedVal(reinterpret_cast<intptr_t>(ND),
4277
167k
                  DiagnosticsEngine::ak_nameddecl);
4278
167k
  return DB;
4279
167k
}
4280
inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD,
4281
815k
                                           const NamedDecl* ND) {
4282
815k
  PD.AddTaggedVal(reinterpret_cast<intptr_t>(ND),
4283
815k
                  DiagnosticsEngine::ak_nameddecl);
4284
815k
  return PD;
4285
815k
}
4286
4287
template<typename decl_type>
4288
5.70M
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
5.70M
  // Note: This routine is implemented here because we need both NamedDecl
4290
5.70M
  // and Redeclarable to be defined.
4291
5.70M
  assert(RedeclLink.isFirst() &&
4292
5.70M
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
5.70M
4294
5.70M
  if (PrevDecl) {
4295
1.88M
    // Point to previous. Make sure that this is actually the most recent
4296
1.88M
    // redeclaration, or we can build invalid chains. If the most recent
4297
1.88M
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
1.88M
    First = PrevDecl->getFirstDecl();
4299
1.88M
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
1.88M
    decl_type *MostRecent = First->getNextRedeclaration();
4301
1.88M
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
1.88M
4303
1.88M
    // If the declaration was previously visible, a redeclaration of it remains
4304
1.88M
    // visible even if it wouldn't be visible by itself.
4305
1.88M
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
1.88M
      MostRecent->getIdentifierNamespace() &
4307
1.88M
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
3.82M
  } else {
4309
3.82M
    // Make this first.
4310
3.82M
    First = static_cast<decl_type*>(this);
4311
3.82M
  }
4312
5.70M
4313
5.70M
  // First one will point to this one as latest.
4314
5.70M
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
5.70M
4316
5.70M
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
5.70M
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
5.70M
}
clang::Redeclarable<clang::TypedefNameDecl>::setPreviousDecl(clang::TypedefNameDecl*)
Line
Count
Source
4288
6.71k
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
6.71k
  // Note: This routine is implemented here because we need both NamedDecl
4290
6.71k
  // and Redeclarable to be defined.
4291
6.71k
  assert(RedeclLink.isFirst() &&
4292
6.71k
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
6.71k
4294
6.71k
  if (PrevDecl) {
4295
6.71k
    // Point to previous. Make sure that this is actually the most recent
4296
6.71k
    // redeclaration, or we can build invalid chains. If the most recent
4297
6.71k
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
6.71k
    First = PrevDecl->getFirstDecl();
4299
6.71k
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
6.71k
    decl_type *MostRecent = First->getNextRedeclaration();
4301
6.71k
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
6.71k
4303
6.71k
    // If the declaration was previously visible, a redeclaration of it remains
4304
6.71k
    // visible even if it wouldn't be visible by itself.
4305
6.71k
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
6.71k
      MostRecent->getIdentifierNamespace() &
4307
6.71k
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
6.71k
  } else {
4309
0
    // Make this first.
4310
0
    First = static_cast<decl_type*>(this);
4311
0
  }
4312
6.71k
4313
6.71k
  // First one will point to this one as latest.
4314
6.71k
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
6.71k
4316
6.71k
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
6.71k
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
6.71k
}
clang::Redeclarable<clang::VarDecl>::setPreviousDecl(clang::VarDecl*)
Line
Count
Source
4288
74.9k
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
74.9k
  // Note: This routine is implemented here because we need both NamedDecl
4290
74.9k
  // and Redeclarable to be defined.
4291
74.9k
  assert(RedeclLink.isFirst() &&
4292
74.9k
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
74.9k
4294
74.9k
  if (PrevDecl) {
4295
74.9k
    // Point to previous. Make sure that this is actually the most recent
4296
74.9k
    // redeclaration, or we can build invalid chains. If the most recent
4297
74.9k
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
74.9k
    First = PrevDecl->getFirstDecl();
4299
74.9k
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
74.9k
    decl_type *MostRecent = First->getNextRedeclaration();
4301
74.9k
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
74.9k
4303
74.9k
    // If the declaration was previously visible, a redeclaration of it remains
4304
74.9k
    // visible even if it wouldn't be visible by itself.
4305
74.9k
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
74.9k
      MostRecent->getIdentifierNamespace() &
4307
74.9k
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
74.9k
  } else {
4309
0
    // Make this first.
4310
0
    First = static_cast<decl_type*>(this);
4311
0
  }
4312
74.9k
4313
74.9k
  // First one will point to this one as latest.
4314
74.9k
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
74.9k
4316
74.9k
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
74.9k
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
74.9k
}
clang::Redeclarable<clang::RedeclarableTemplateDecl>::setPreviousDecl(clang::RedeclarableTemplateDecl*)
Line
Count
Source
4288
346k
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
346k
  // Note: This routine is implemented here because we need both NamedDecl
4290
346k
  // and Redeclarable to be defined.
4291
346k
  assert(RedeclLink.isFirst() &&
4292
346k
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
346k
4294
346k
  if (PrevDecl) {
4295
88.8k
    // Point to previous. Make sure that this is actually the most recent
4296
88.8k
    // redeclaration, or we can build invalid chains. If the most recent
4297
88.8k
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
88.8k
    First = PrevDecl->getFirstDecl();
4299
88.8k
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
88.8k
    decl_type *MostRecent = First->getNextRedeclaration();
4301
88.8k
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
88.8k
4303
88.8k
    // If the declaration was previously visible, a redeclaration of it remains
4304
88.8k
    // visible even if it wouldn't be visible by itself.
4305
88.8k
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
88.8k
      MostRecent->getIdentifierNamespace() &
4307
88.8k
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
257k
  } else {
4309
257k
    // Make this first.
4310
257k
    First = static_cast<decl_type*>(this);
4311
257k
  }
4312
346k
4313
346k
  // First one will point to this one as latest.
4314
346k
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
346k
4316
346k
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
346k
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
346k
}
clang::Redeclarable<clang::UsingShadowDecl>::setPreviousDecl(clang::UsingShadowDecl*)
Line
Count
Source
4288
160k
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
160k
  // Note: This routine is implemented here because we need both NamedDecl
4290
160k
  // and Redeclarable to be defined.
4291
160k
  assert(RedeclLink.isFirst() &&
4292
160k
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
160k
4294
160k
  if (PrevDecl) {
4295
3.10k
    // Point to previous. Make sure that this is actually the most recent
4296
3.10k
    // redeclaration, or we can build invalid chains. If the most recent
4297
3.10k
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
3.10k
    First = PrevDecl->getFirstDecl();
4299
3.10k
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
3.10k
    decl_type *MostRecent = First->getNextRedeclaration();
4301
3.10k
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
3.10k
4303
3.10k
    // If the declaration was previously visible, a redeclaration of it remains
4304
3.10k
    // visible even if it wouldn't be visible by itself.
4305
3.10k
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
3.10k
      MostRecent->getIdentifierNamespace() &
4307
3.10k
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
157k
  } else {
4309
157k
    // Make this first.
4310
157k
    First = static_cast<decl_type*>(this);
4311
157k
  }
4312
160k
4313
160k
  // First one will point to this one as latest.
4314
160k
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
160k
4316
160k
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
160k
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
160k
}
clang::Redeclarable<clang::NamespaceAliasDecl>::setPreviousDecl(clang::NamespaceAliasDecl*)
Line
Count
Source
4288
12
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
12
  // Note: This routine is implemented here because we need both NamedDecl
4290
12
  // and Redeclarable to be defined.
4291
12
  assert(RedeclLink.isFirst() &&
4292
12
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
12
4294
12
  if (PrevDecl) {
4295
12
    // Point to previous. Make sure that this is actually the most recent
4296
12
    // redeclaration, or we can build invalid chains. If the most recent
4297
12
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
12
    First = PrevDecl->getFirstDecl();
4299
12
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
12
    decl_type *MostRecent = First->getNextRedeclaration();
4301
12
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
12
4303
12
    // If the declaration was previously visible, a redeclaration of it remains
4304
12
    // visible even if it wouldn't be visible by itself.
4305
12
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
12
      MostRecent->getIdentifierNamespace() &
4307
12
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
12
  } else {
4309
0
    // Make this first.
4310
0
    First = static_cast<decl_type*>(this);
4311
0
  }
4312
12
4313
12
  // First one will point to this one as latest.
4314
12
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
12
4316
12
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
12
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
12
}
clang::Redeclarable<clang::FunctionDecl>::setPreviousDecl(clang::FunctionDecl*)
Line
Count
Source
4288
542k
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
542k
  // Note: This routine is implemented here because we need both NamedDecl
4290
542k
  // and Redeclarable to be defined.
4291
542k
  assert(RedeclLink.isFirst() &&
4292
542k
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
542k
4294
542k
  if (PrevDecl) {
4295
542k
    // Point to previous. Make sure that this is actually the most recent
4296
542k
    // redeclaration, or we can build invalid chains. If the most recent
4297
542k
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
542k
    First = PrevDecl->getFirstDecl();
4299
542k
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
542k
    decl_type *MostRecent = First->getNextRedeclaration();
4301
542k
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
542k
4303
542k
    // If the declaration was previously visible, a redeclaration of it remains
4304
542k
    // visible even if it wouldn't be visible by itself.
4305
542k
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
542k
      MostRecent->getIdentifierNamespace() &
4307
542k
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
542k
  } else {
4309
0
    // Make this first.
4310
0
    First = static_cast<decl_type*>(this);
4311
0
  }
4312
542k
4313
542k
  // First one will point to this one as latest.
4314
542k
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
542k
4316
542k
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
542k
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
542k
}
clang::Redeclarable<clang::TagDecl>::setPreviousDecl(clang::TagDecl*)
Line
Count
Source
4288
4.42M
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
4.42M
  // Note: This routine is implemented here because we need both NamedDecl
4290
4.42M
  // and Redeclarable to be defined.
4291
4.42M
  assert(RedeclLink.isFirst() &&
4292
4.42M
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
4.42M
4294
4.42M
  if (PrevDecl) {
4295
1.08M
    // Point to previous. Make sure that this is actually the most recent
4296
1.08M
    // redeclaration, or we can build invalid chains. If the most recent
4297
1.08M
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
1.08M
    First = PrevDecl->getFirstDecl();
4299
1.08M
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
1.08M
    decl_type *MostRecent = First->getNextRedeclaration();
4301
1.08M
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
1.08M
4303
1.08M
    // If the declaration was previously visible, a redeclaration of it remains
4304
1.08M
    // visible even if it wouldn't be visible by itself.
4305
1.08M
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
1.08M
      MostRecent->getIdentifierNamespace() &
4307
1.08M
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
3.33M
  } else {
4309
3.33M
    // Make this first.
4310
3.33M
    First = static_cast<decl_type*>(this);
4311
3.33M
  }
4312
4.42M
4313
4.42M
  // First one will point to this one as latest.
4314
4.42M
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
4.42M
4316
4.42M
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
4.42M
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
4.42M
}
clang::Redeclarable<clang::NamespaceDecl>::setPreviousDecl(clang::NamespaceDecl*)
Line
Count
Source
4288
119k
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
119k
  // Note: This routine is implemented here because we need both NamedDecl
4290
119k
  // and Redeclarable to be defined.
4291
119k
  assert(RedeclLink.isFirst() &&
4292
119k
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
119k
4294
119k
  if (PrevDecl) {
4295
74.2k
    // Point to previous. Make sure that this is actually the most recent
4296
74.2k
    // redeclaration, or we can build invalid chains. If the most recent
4297
74.2k
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
74.2k
    First = PrevDecl->getFirstDecl();
4299
74.2k
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
74.2k
    decl_type *MostRecent = First->getNextRedeclaration();
4301
74.2k
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
74.2k
4303
74.2k
    // If the declaration was previously visible, a redeclaration of it remains
4304
74.2k
    // visible even if it wouldn't be visible by itself.
4305
74.2k
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
74.2k
      MostRecent->getIdentifierNamespace() &
4307
74.2k
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
74.2k
  } else {
4309
45.3k
    // Make this first.
4310
45.3k
    First = static_cast<decl_type*>(this);
4311
45.3k
  }
4312
119k
4313
119k
  // First one will point to this one as latest.
4314
119k
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
119k
4316
119k
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
119k
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
119k
}
clang::Redeclarable<clang::ObjCInterfaceDecl>::setPreviousDecl(clang::ObjCInterfaceDecl*)
Line
Count
Source
4288
30.4k
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
30.4k
  // Note: This routine is implemented here because we need both NamedDecl
4290
30.4k
  // and Redeclarable to be defined.
4291
30.4k
  assert(RedeclLink.isFirst() &&
4292
30.4k
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
30.4k
4294
30.4k
  if (PrevDecl) {
4295
6.77k
    // Point to previous. Make sure that this is actually the most recent
4296
6.77k
    // redeclaration, or we can build invalid chains. If the most recent
4297
6.77k
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
6.77k
    First = PrevDecl->getFirstDecl();
4299
6.77k
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
6.77k
    decl_type *MostRecent = First->getNextRedeclaration();
4301
6.77k
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
6.77k
4303
6.77k
    // If the declaration was previously visible, a redeclaration of it remains
4304
6.77k
    // visible even if it wouldn't be visible by itself.
4305
6.77k
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
6.77k
      MostRecent->getIdentifierNamespace() &
4307
6.77k
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
23.6k
  } else {
4309
23.6k
    // Make this first.
4310
23.6k
    First = static_cast<decl_type*>(this);
4311
23.6k
  }
4312
30.4k
4313
30.4k
  // First one will point to this one as latest.
4314
30.4k
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
30.4k
4316
30.4k
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
30.4k
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
30.4k
}
clang::Redeclarable<clang::ObjCProtocolDecl>::setPreviousDecl(clang::ObjCProtocolDecl*)
Line
Count
Source
4288
4.00k
void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
4289
4.00k
  // Note: This routine is implemented here because we need both NamedDecl
4290
4.00k
  // and Redeclarable to be defined.
4291
4.00k
  assert(RedeclLink.isFirst() &&
4292
4.00k
         "setPreviousDecl on a decl already in a redeclaration chain");
4293
4.00k
4294
4.00k
  if (PrevDecl) {
4295
386
    // Point to previous. Make sure that this is actually the most recent
4296
386
    // redeclaration, or we can build invalid chains. If the most recent
4297
386
    // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
4298
386
    First = PrevDecl->getFirstDecl();
4299
386
    assert(First->RedeclLink.isFirst() && "Expected first");
4300
386
    decl_type *MostRecent = First->getNextRedeclaration();
4301
386
    RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
4302
386
4303
386
    // If the declaration was previously visible, a redeclaration of it remains
4304
386
    // visible even if it wouldn't be visible by itself.
4305
386
    static_cast<decl_type*>(this)->IdentifierNamespace |=
4306
386
      MostRecent->getIdentifierNamespace() &
4307
386
      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
4308
3.61k
  } else {
4309
3.61k
    // Make this first.
4310
3.61k
    First = static_cast<decl_type*>(this);
4311
3.61k
  }
4312
4.00k
4313
4.00k
  // First one will point to this one as latest.
4314
4.00k
  First->RedeclLink.setLatest(static_cast<decl_type*>(this));
4315
4.00k
4316
4.00k
  assert(!isa<NamedDecl>(static_cast<decl_type*>(this)) ||
4317
4.00k
         cast<NamedDecl>(static_cast<decl_type*>(this))->isLinkageValid());
4318
4.00k
}
4319
4320
// Inline function definitions.
4321
4322
/// Check if the given decl is complete.
4323
///
4324
/// We use this function to break a cycle between the inline definitions in
4325
/// Type.h and Decl.h.
4326
1.71M
inline bool IsEnumDeclComplete(EnumDecl *ED) {
4327
1.71M
  return ED->isComplete();
4328
1.71M
}
4329
4330
/// Check if the given decl is scoped.
4331
///
4332
/// We use this function to break a cycle between the inline definitions in
4333
/// Type.h and Decl.h.
4334
588k
inline bool IsEnumDeclScoped(EnumDecl *ED) {
4335
588k
  return ED->isScoped();
4336
588k
}
4337
4338
} // namespace clang
4339
4340
#endif // LLVM_CLANG_AST_DECL_H