clang  7.0.0
DeclCXX.h
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1 //===- DeclCXX.h - Classes for representing C++ declarations --*- C++ -*-=====//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 /// \file
11 /// Defines the C++ Decl subclasses, other than those for templates
12 /// (found in DeclTemplate.h) and friends (in DeclFriend.h).
13 //
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_CLANG_AST_DECLCXX_H
17 #define LLVM_CLANG_AST_DECLCXX_H
18 
19 #include "clang/AST/ASTContext.h"
21 #include "clang/AST/Attr.h"
22 #include "clang/AST/Decl.h"
23 #include "clang/AST/DeclBase.h"
25 #include "clang/AST/Expr.h"
29 #include "clang/AST/Redeclarable.h"
30 #include "clang/AST/Stmt.h"
31 #include "clang/AST/Type.h"
32 #include "clang/AST/TypeLoc.h"
34 #include "clang/Basic/LLVM.h"
35 #include "clang/Basic/Lambda.h"
39 #include "clang/Basic/Specifiers.h"
40 #include "llvm/ADT/ArrayRef.h"
41 #include "llvm/ADT/DenseMap.h"
42 #include "llvm/ADT/PointerIntPair.h"
43 #include "llvm/ADT/PointerUnion.h"
44 #include "llvm/ADT/STLExtras.h"
45 #include "llvm/ADT/iterator_range.h"
46 #include "llvm/Support/Casting.h"
47 #include "llvm/Support/Compiler.h"
48 #include "llvm/Support/PointerLikeTypeTraits.h"
49 #include "llvm/Support/TrailingObjects.h"
50 #include <cassert>
51 #include <cstddef>
52 #include <iterator>
53 #include <memory>
54 #include <vector>
55 
56 namespace clang {
57 
58 class ClassTemplateDecl;
59 class ConstructorUsingShadowDecl;
60 class CXXBasePath;
61 class CXXBasePaths;
62 class CXXConstructorDecl;
63 class CXXDestructorDecl;
64 class CXXFinalOverriderMap;
65 class CXXIndirectPrimaryBaseSet;
66 class CXXMethodDecl;
67 class DiagnosticBuilder;
68 class FriendDecl;
69 class FunctionTemplateDecl;
70 class IdentifierInfo;
71 class MemberSpecializationInfo;
72 class TemplateDecl;
73 class TemplateParameterList;
74 class UsingDecl;
75 
76 /// Represents any kind of function declaration, whether it is a
77 /// concrete function or a function template.
79  NamedDecl *Function;
80 
81  AnyFunctionDecl(NamedDecl *ND) : Function(ND) {}
82 
83 public:
84  AnyFunctionDecl(FunctionDecl *FD) : Function(FD) {}
86 
87  /// Implicily converts any function or function template into a
88  /// named declaration.
89  operator NamedDecl *() const { return Function; }
90 
91  /// Retrieve the underlying function or function template.
92  NamedDecl *get() const { return Function; }
93 
95  return AnyFunctionDecl(ND);
96  }
97 };
98 
99 } // namespace clang
100 
101 namespace llvm {
102 
103  // Provide PointerLikeTypeTraits for non-cvr pointers.
104  template<>
107  return F.get();
108  }
109 
110  static ::clang::AnyFunctionDecl getFromVoidPointer(void *P) {
111  return ::clang::AnyFunctionDecl::getFromNamedDecl(
112  static_cast< ::clang::NamedDecl*>(P));
113  }
114 
115  enum { NumLowBitsAvailable = 2 };
116  };
117 
118 } // namespace llvm
119 
120 namespace clang {
121 
122 /// Represents an access specifier followed by colon ':'.
123 ///
124 /// An objects of this class represents sugar for the syntactic occurrence
125 /// of an access specifier followed by a colon in the list of member
126 /// specifiers of a C++ class definition.
127 ///
128 /// Note that they do not represent other uses of access specifiers,
129 /// such as those occurring in a list of base specifiers.
130 /// Also note that this class has nothing to do with so-called
131 /// "access declarations" (C++98 11.3 [class.access.dcl]).
132 class AccessSpecDecl : public Decl {
133  /// The location of the ':'.
135 
137  SourceLocation ASLoc, SourceLocation ColonLoc)
138  : Decl(AccessSpec, DC, ASLoc), ColonLoc(ColonLoc) {
139  setAccess(AS);
140  }
141 
142  AccessSpecDecl(EmptyShell Empty) : Decl(AccessSpec, Empty) {}
143 
144  virtual void anchor();
145 
146 public:
147  /// The location of the access specifier.
148  SourceLocation getAccessSpecifierLoc() const { return getLocation(); }
149 
150  /// Sets the location of the access specifier.
151  void setAccessSpecifierLoc(SourceLocation ASLoc) { setLocation(ASLoc); }
152 
153  /// The location of the colon following the access specifier.
154  SourceLocation getColonLoc() const { return ColonLoc; }
155 
156  /// Sets the location of the colon.
157  void setColonLoc(SourceLocation CLoc) { ColonLoc = CLoc; }
158 
159  SourceRange getSourceRange() const override LLVM_READONLY {
160  return SourceRange(getAccessSpecifierLoc(), getColonLoc());
161  }
162 
164  DeclContext *DC, SourceLocation ASLoc,
165  SourceLocation ColonLoc) {
166  return new (C, DC) AccessSpecDecl(AS, DC, ASLoc, ColonLoc);
167  }
168 
169  static AccessSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID);
170 
171  // Implement isa/cast/dyncast/etc.
172  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
173  static bool classofKind(Kind K) { return K == AccessSpec; }
174 };
175 
176 /// Represents a base class of a C++ class.
177 ///
178 /// Each CXXBaseSpecifier represents a single, direct base class (or
179 /// struct) of a C++ class (or struct). It specifies the type of that
180 /// base class, whether it is a virtual or non-virtual base, and what
181 /// level of access (public, protected, private) is used for the
182 /// derivation. For example:
183 ///
184 /// \code
185 /// class A { };
186 /// class B { };
187 /// class C : public virtual A, protected B { };
188 /// \endcode
189 ///
190 /// In this code, C will have two CXXBaseSpecifiers, one for "public
191 /// virtual A" and the other for "protected B".
193  /// The source code range that covers the full base
194  /// specifier, including the "virtual" (if present) and access
195  /// specifier (if present).
196  SourceRange Range;
197 
198  /// The source location of the ellipsis, if this is a pack
199  /// expansion.
200  SourceLocation EllipsisLoc;
201 
202  /// Whether this is a virtual base class or not.
203  unsigned Virtual : 1;
204 
205  /// Whether this is the base of a class (true) or of a struct (false).
206  ///
207  /// This determines the mapping from the access specifier as written in the
208  /// source code to the access specifier used for semantic analysis.
209  unsigned BaseOfClass : 1;
210 
211  /// Access specifier as written in the source code (may be AS_none).
212  ///
213  /// The actual type of data stored here is an AccessSpecifier, but we use
214  /// "unsigned" here to work around a VC++ bug.
215  unsigned Access : 2;
216 
217  /// Whether the class contains a using declaration
218  /// to inherit the named class's constructors.
219  unsigned InheritConstructors : 1;
220 
221  /// The type of the base class.
222  ///
223  /// This will be a class or struct (or a typedef of such). The source code
224  /// range does not include the \c virtual or the access specifier.
225  TypeSourceInfo *BaseTypeInfo;
226 
227 public:
228  CXXBaseSpecifier() = default;
230  TypeSourceInfo *TInfo, SourceLocation EllipsisLoc)
231  : Range(R), EllipsisLoc(EllipsisLoc), Virtual(V), BaseOfClass(BC),
232  Access(A), InheritConstructors(false), BaseTypeInfo(TInfo) {}
233 
234  /// Retrieves the source range that contains the entire base specifier.
235  SourceRange getSourceRange() const LLVM_READONLY { return Range; }
236  SourceLocation getLocStart() const LLVM_READONLY { return getBeginLoc(); }
237  SourceLocation getBeginLoc() const LLVM_READONLY { return Range.getBegin(); }
238  SourceLocation getLocEnd() const LLVM_READONLY { return getEndLoc(); }
239  SourceLocation getEndLoc() const LLVM_READONLY { return Range.getEnd(); }
240 
241  /// Get the location at which the base class type was written.
242  SourceLocation getBaseTypeLoc() const LLVM_READONLY {
243  return BaseTypeInfo->getTypeLoc().getLocStart();
244  }
245 
246  /// Determines whether the base class is a virtual base class (or not).
247  bool isVirtual() const { return Virtual; }
248 
249  /// Determine whether this base class is a base of a class declared
250  /// with the 'class' keyword (vs. one declared with the 'struct' keyword).
251  bool isBaseOfClass() const { return BaseOfClass; }
252 
253  /// Determine whether this base specifier is a pack expansion.
254  bool isPackExpansion() const { return EllipsisLoc.isValid(); }
255 
256  /// Determine whether this base class's constructors get inherited.
257  bool getInheritConstructors() const { return InheritConstructors; }
258 
259  /// Set that this base class's constructors should be inherited.
260  void setInheritConstructors(bool Inherit = true) {
261  InheritConstructors = Inherit;
262  }
263 
264  /// For a pack expansion, determine the location of the ellipsis.
266  return EllipsisLoc;
267  }
268 
269  /// Returns the access specifier for this base specifier.
270  ///
271  /// This is the actual base specifier as used for semantic analysis, so
272  /// the result can never be AS_none. To retrieve the access specifier as
273  /// written in the source code, use getAccessSpecifierAsWritten().
275  if ((AccessSpecifier)Access == AS_none)
276  return BaseOfClass? AS_private : AS_public;
277  else
278  return (AccessSpecifier)Access;
279  }
280 
281  /// Retrieves the access specifier as written in the source code
282  /// (which may mean that no access specifier was explicitly written).
283  ///
284  /// Use getAccessSpecifier() to retrieve the access specifier for use in
285  /// semantic analysis.
287  return (AccessSpecifier)Access;
288  }
289 
290  /// Retrieves the type of the base class.
291  ///
292  /// This type will always be an unqualified class type.
293  QualType getType() const {
294  return BaseTypeInfo->getType().getUnqualifiedType();
295  }
296 
297  /// Retrieves the type and source location of the base class.
298  TypeSourceInfo *getTypeSourceInfo() const { return BaseTypeInfo; }
299 };
300 
301 /// Represents a C++ struct/union/class.
302 class CXXRecordDecl : public RecordDecl {
303  friend class ASTDeclReader;
304  friend class ASTDeclWriter;
305  friend class ASTNodeImporter;
306  friend class ASTReader;
307  friend class ASTRecordWriter;
308  friend class ASTWriter;
309  friend class DeclContext;
310  friend class LambdaExpr;
311 
312  friend void FunctionDecl::setPure(bool);
313  friend void TagDecl::startDefinition();
314 
315  /// Values used in DefinitionData fields to represent special members.
316  enum SpecialMemberFlags {
317  SMF_DefaultConstructor = 0x1,
318  SMF_CopyConstructor = 0x2,
319  SMF_MoveConstructor = 0x4,
320  SMF_CopyAssignment = 0x8,
321  SMF_MoveAssignment = 0x10,
322  SMF_Destructor = 0x20,
323  SMF_All = 0x3f
324  };
325 
326  struct DefinitionData {
327  /// True if this class has any user-declared constructors.
328  unsigned UserDeclaredConstructor : 1;
329 
330  /// The user-declared special members which this class has.
331  unsigned UserDeclaredSpecialMembers : 6;
332 
333  /// True when this class is an aggregate.
334  unsigned Aggregate : 1;
335 
336  /// True when this class is a POD-type.
337  unsigned PlainOldData : 1;
338 
339  /// true when this class is empty for traits purposes,
340  /// i.e. has no data members other than 0-width bit-fields, has no
341  /// virtual function/base, and doesn't inherit from a non-empty
342  /// class. Doesn't take union-ness into account.
343  unsigned Empty : 1;
344 
345  /// True when this class is polymorphic, i.e., has at
346  /// least one virtual member or derives from a polymorphic class.
347  unsigned Polymorphic : 1;
348 
349  /// True when this class is abstract, i.e., has at least
350  /// one pure virtual function, (that can come from a base class).
351  unsigned Abstract : 1;
352 
353  /// True when this class is standard-layout, per the applicable
354  /// language rules (including DRs).
355  unsigned IsStandardLayout : 1;
356 
357  /// True when this class was standard-layout under the C++11
358  /// definition.
359  ///
360  /// C++11 [class]p7. A standard-layout class is a class that:
361  /// * has no non-static data members of type non-standard-layout class (or
362  /// array of such types) or reference,
363  /// * has no virtual functions (10.3) and no virtual base classes (10.1),
364  /// * has the same access control (Clause 11) for all non-static data
365  /// members
366  /// * has no non-standard-layout base classes,
367  /// * either has no non-static data members in the most derived class and at
368  /// most one base class with non-static data members, or has no base
369  /// classes with non-static data members, and
370  /// * has no base classes of the same type as the first non-static data
371  /// member.
372  unsigned IsCXX11StandardLayout : 1;
373 
374  /// True when any base class has any declared non-static data
375  /// members or bit-fields.
376  /// This is a helper bit of state used to implement IsStandardLayout more
377  /// efficiently.
378  unsigned HasBasesWithFields : 1;
379 
380  /// True when any base class has any declared non-static data
381  /// members.
382  /// This is a helper bit of state used to implement IsCXX11StandardLayout
383  /// more efficiently.
384  unsigned HasBasesWithNonStaticDataMembers : 1;
385 
386  /// True when there are private non-static data members.
387  unsigned HasPrivateFields : 1;
388 
389  /// True when there are protected non-static data members.
390  unsigned HasProtectedFields : 1;
391 
392  /// True when there are private non-static data members.
393  unsigned HasPublicFields : 1;
394 
395  /// True if this class (or any subobject) has mutable fields.
396  unsigned HasMutableFields : 1;
397 
398  /// True if this class (or any nested anonymous struct or union)
399  /// has variant members.
400  unsigned HasVariantMembers : 1;
401 
402  /// True if there no non-field members declared by the user.
403  unsigned HasOnlyCMembers : 1;
404 
405  /// True if any field has an in-class initializer, including those
406  /// within anonymous unions or structs.
407  unsigned HasInClassInitializer : 1;
408 
409  /// True if any field is of reference type, and does not have an
410  /// in-class initializer.
411  ///
412  /// In this case, value-initialization of this class is illegal in C++98
413  /// even if the class has a trivial default constructor.
414  unsigned HasUninitializedReferenceMember : 1;
415 
416  /// True if any non-mutable field whose type doesn't have a user-
417  /// provided default ctor also doesn't have an in-class initializer.
418  unsigned HasUninitializedFields : 1;
419 
420  /// True if there are any member using-declarations that inherit
421  /// constructors from a base class.
422  unsigned HasInheritedConstructor : 1;
423 
424  /// True if there are any member using-declarations named
425  /// 'operator='.
426  unsigned HasInheritedAssignment : 1;
427 
428  /// These flags are \c true if a defaulted corresponding special
429  /// member can't be fully analyzed without performing overload resolution.
430  /// @{
431  unsigned NeedOverloadResolutionForCopyConstructor : 1;
432  unsigned NeedOverloadResolutionForMoveConstructor : 1;
433  unsigned NeedOverloadResolutionForMoveAssignment : 1;
434  unsigned NeedOverloadResolutionForDestructor : 1;
435  /// @}
436 
437  /// These flags are \c true if an implicit defaulted corresponding
438  /// special member would be defined as deleted.
439  /// @{
440  unsigned DefaultedCopyConstructorIsDeleted : 1;
441  unsigned DefaultedMoveConstructorIsDeleted : 1;
442  unsigned DefaultedMoveAssignmentIsDeleted : 1;
443  unsigned DefaultedDestructorIsDeleted : 1;
444  /// @}
445 
446  /// The trivial special members which this class has, per
447  /// C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25,
448  /// C++11 [class.dtor]p5, or would have if the member were not suppressed.
449  ///
450  /// This excludes any user-declared but not user-provided special members
451  /// which have been declared but not yet defined.
452  unsigned HasTrivialSpecialMembers : 6;
453 
454  /// These bits keep track of the triviality of special functions for the
455  /// purpose of calls. Only the bits corresponding to SMF_CopyConstructor,
456  /// SMF_MoveConstructor, and SMF_Destructor are meaningful here.
457  unsigned HasTrivialSpecialMembersForCall : 6;
458 
459  /// The declared special members of this class which are known to be
460  /// non-trivial.
461  ///
462  /// This excludes any user-declared but not user-provided special members
463  /// which have been declared but not yet defined, and any implicit special
464  /// members which have not yet been declared.
465  unsigned DeclaredNonTrivialSpecialMembers : 6;
466 
467  /// These bits keep track of the declared special members that are
468  /// non-trivial for the purpose of calls.
469  /// Only the bits corresponding to SMF_CopyConstructor,
470  /// SMF_MoveConstructor, and SMF_Destructor are meaningful here.
471  unsigned DeclaredNonTrivialSpecialMembersForCall : 6;
472 
473  /// True when this class has a destructor with no semantic effect.
474  unsigned HasIrrelevantDestructor : 1;
475 
476  /// True when this class has at least one user-declared constexpr
477  /// constructor which is neither the copy nor move constructor.
478  unsigned HasConstexprNonCopyMoveConstructor : 1;
479 
480  /// True if this class has a (possibly implicit) defaulted default
481  /// constructor.
482  unsigned HasDefaultedDefaultConstructor : 1;
483 
484  /// True if a defaulted default constructor for this class would
485  /// be constexpr.
486  unsigned DefaultedDefaultConstructorIsConstexpr : 1;
487 
488  /// True if this class has a constexpr default constructor.
489  ///
490  /// This is true for either a user-declared constexpr default constructor
491  /// or an implicitly declared constexpr default constructor.
492  unsigned HasConstexprDefaultConstructor : 1;
493 
494  /// True when this class contains at least one non-static data
495  /// member or base class of non-literal or volatile type.
496  unsigned HasNonLiteralTypeFieldsOrBases : 1;
497 
498  /// True when visible conversion functions are already computed
499  /// and are available.
500  unsigned ComputedVisibleConversions : 1;
501 
502  /// Whether we have a C++11 user-provided default constructor (not
503  /// explicitly deleted or defaulted).
504  unsigned UserProvidedDefaultConstructor : 1;
505 
506  /// The special members which have been declared for this class,
507  /// either by the user or implicitly.
508  unsigned DeclaredSpecialMembers : 6;
509 
510  /// Whether an implicit copy constructor could have a const-qualified
511  /// parameter, for initializing virtual bases and for other subobjects.
512  unsigned ImplicitCopyConstructorCanHaveConstParamForVBase : 1;
513  unsigned ImplicitCopyConstructorCanHaveConstParamForNonVBase : 1;
514 
515  /// Whether an implicit copy assignment operator would have a
516  /// const-qualified parameter.
517  unsigned ImplicitCopyAssignmentHasConstParam : 1;
518 
519  /// Whether any declared copy constructor has a const-qualified
520  /// parameter.
521  unsigned HasDeclaredCopyConstructorWithConstParam : 1;
522 
523  /// Whether any declared copy assignment operator has either a
524  /// const-qualified reference parameter or a non-reference parameter.
525  unsigned HasDeclaredCopyAssignmentWithConstParam : 1;
526 
527  /// Whether this class describes a C++ lambda.
528  unsigned IsLambda : 1;
529 
530  /// Whether we are currently parsing base specifiers.
531  unsigned IsParsingBaseSpecifiers : 1;
532 
533  unsigned HasODRHash : 1;
534 
535  /// A hash of parts of the class to help in ODR checking.
536  unsigned ODRHash = 0;
537 
538  /// The number of base class specifiers in Bases.
539  unsigned NumBases = 0;
540 
541  /// The number of virtual base class specifiers in VBases.
542  unsigned NumVBases = 0;
543 
544  /// Base classes of this class.
545  ///
546  /// FIXME: This is wasted space for a union.
548 
549  /// direct and indirect virtual base classes of this class.
551 
552  /// The conversion functions of this C++ class (but not its
553  /// inherited conversion functions).
554  ///
555  /// Each of the entries in this overload set is a CXXConversionDecl.
556  LazyASTUnresolvedSet Conversions;
557 
558  /// The conversion functions of this C++ class and all those
559  /// inherited conversion functions that are visible in this class.
560  ///
561  /// Each of the entries in this overload set is a CXXConversionDecl or a
562  /// FunctionTemplateDecl.
563  LazyASTUnresolvedSet VisibleConversions;
564 
565  /// The declaration which defines this record.
566  CXXRecordDecl *Definition;
567 
568  /// The first friend declaration in this class, or null if there
569  /// aren't any.
570  ///
571  /// This is actually currently stored in reverse order.
572  LazyDeclPtr FirstFriend;
573 
574  DefinitionData(CXXRecordDecl *D);
575 
576  /// Retrieve the set of direct base classes.
577  CXXBaseSpecifier *getBases() const {
578  if (!Bases.isOffset())
579  return Bases.get(nullptr);
580  return getBasesSlowCase();
581  }
582 
583  /// Retrieve the set of virtual base classes.
584  CXXBaseSpecifier *getVBases() const {
585  if (!VBases.isOffset())
586  return VBases.get(nullptr);
587  return getVBasesSlowCase();
588  }
589 
590  ArrayRef<CXXBaseSpecifier> bases() const {
591  return llvm::makeArrayRef(getBases(), NumBases);
592  }
593 
594  ArrayRef<CXXBaseSpecifier> vbases() const {
595  return llvm::makeArrayRef(getVBases(), NumVBases);
596  }
597 
598  private:
599  CXXBaseSpecifier *getBasesSlowCase() const;
600  CXXBaseSpecifier *getVBasesSlowCase() const;
601  };
602 
603  struct DefinitionData *DefinitionData;
604 
605  /// Describes a C++ closure type (generated by a lambda expression).
606  struct LambdaDefinitionData : public DefinitionData {
607  using Capture = LambdaCapture;
608 
609  /// Whether this lambda is known to be dependent, even if its
610  /// context isn't dependent.
611  ///
612  /// A lambda with a non-dependent context can be dependent if it occurs
613  /// within the default argument of a function template, because the
614  /// lambda will have been created with the enclosing context as its
615  /// declaration context, rather than function. This is an unfortunate
616  /// artifact of having to parse the default arguments before.
617  unsigned Dependent : 1;
618 
619  /// Whether this lambda is a generic lambda.
620  unsigned IsGenericLambda : 1;
621 
622  /// The Default Capture.
623  unsigned CaptureDefault : 2;
624 
625  /// The number of captures in this lambda is limited 2^NumCaptures.
626  unsigned NumCaptures : 15;
627 
628  /// The number of explicit captures in this lambda.
629  unsigned NumExplicitCaptures : 13;
630 
631  /// The number used to indicate this lambda expression for name
632  /// mangling in the Itanium C++ ABI.
633  unsigned ManglingNumber = 0;
634 
635  /// The declaration that provides context for this lambda, if the
636  /// actual DeclContext does not suffice. This is used for lambdas that
637  /// occur within default arguments of function parameters within the class
638  /// or within a data member initializer.
639  LazyDeclPtr ContextDecl;
640 
641  /// The list of captures, both explicit and implicit, for this
642  /// lambda.
643  Capture *Captures = nullptr;
644 
645  /// The type of the call method.
646  TypeSourceInfo *MethodTyInfo;
647 
648  LambdaDefinitionData(CXXRecordDecl *D, TypeSourceInfo *Info,
649  bool Dependent, bool IsGeneric,
650  LambdaCaptureDefault CaptureDefault)
651  : DefinitionData(D), Dependent(Dependent), IsGenericLambda(IsGeneric),
652  CaptureDefault(CaptureDefault), NumCaptures(0), NumExplicitCaptures(0),
653  MethodTyInfo(Info) {
654  IsLambda = true;
655 
656  // C++1z [expr.prim.lambda]p4:
657  // This class type is not an aggregate type.
658  Aggregate = false;
659  PlainOldData = false;
660  }
661  };
662 
663  struct DefinitionData *dataPtr() const {
664  // Complete the redecl chain (if necessary).
665  getMostRecentDecl();
666  return DefinitionData;
667  }
668 
669  struct DefinitionData &data() const {
670  auto *DD = dataPtr();
671  assert(DD && "queried property of class with no definition");
672  return *DD;
673  }
674 
675  struct LambdaDefinitionData &getLambdaData() const {
676  // No update required: a merged definition cannot change any lambda
677  // properties.
678  auto *DD = DefinitionData;
679  assert(DD && DD->IsLambda && "queried lambda property of non-lambda class");
680  return static_cast<LambdaDefinitionData&>(*DD);
681  }
682 
683  /// The template or declaration that this declaration
684  /// describes or was instantiated from, respectively.
685  ///
686  /// For non-templates, this value will be null. For record
687  /// declarations that describe a class template, this will be a
688  /// pointer to a ClassTemplateDecl. For member
689  /// classes of class template specializations, this will be the
690  /// MemberSpecializationInfo referring to the member class that was
691  /// instantiated or specialized.
692  llvm::PointerUnion<ClassTemplateDecl *, MemberSpecializationInfo *>
693  TemplateOrInstantiation;
694 
695  /// Called from setBases and addedMember to notify the class that a
696  /// direct or virtual base class or a member of class type has been added.
697  void addedClassSubobject(CXXRecordDecl *Base);
698 
699  /// Notify the class that member has been added.
700  ///
701  /// This routine helps maintain information about the class based on which
702  /// members have been added. It will be invoked by DeclContext::addDecl()
703  /// whenever a member is added to this record.
704  void addedMember(Decl *D);
705 
706  void markedVirtualFunctionPure();
707 
708  /// Get the head of our list of friend declarations, possibly
709  /// deserializing the friends from an external AST source.
710  FriendDecl *getFirstFriend() const;
711 
712  /// Determine whether this class has an empty base class subobject of type X
713  /// or of one of the types that might be at offset 0 within X (per the C++
714  /// "standard layout" rules).
715  bool hasSubobjectAtOffsetZeroOfEmptyBaseType(ASTContext &Ctx,
716  const CXXRecordDecl *X);
717 
718 protected:
719  CXXRecordDecl(Kind K, TagKind TK, const ASTContext &C, DeclContext *DC,
720  SourceLocation StartLoc, SourceLocation IdLoc,
721  IdentifierInfo *Id, CXXRecordDecl *PrevDecl);
722 
723 public:
724  /// Iterator that traverses the base classes of a class.
726 
727  /// Iterator that traverses the base classes of a class.
729 
731  return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl());
732  }
733 
735  return const_cast<CXXRecordDecl*>(this)->getCanonicalDecl();
736  }
737 
739  return cast_or_null<CXXRecordDecl>(
740  static_cast<RecordDecl *>(this)->getPreviousDecl());
741  }
742 
744  return const_cast<CXXRecordDecl*>(this)->getPreviousDecl();
745  }
746 
748  return cast<CXXRecordDecl>(
749  static_cast<RecordDecl *>(this)->getMostRecentDecl());
750  }
751 
753  return const_cast<CXXRecordDecl*>(this)->getMostRecentDecl();
754  }
755 
757  CXXRecordDecl *Recent =
758  static_cast<CXXRecordDecl *>(this)->getMostRecentDecl();
759  while (Recent->isInjectedClassName()) {
760  // FIXME: Does injected class name need to be in the redeclarations chain?
761  assert(Recent->getPreviousDecl());
762  Recent = Recent->getPreviousDecl();
763  }
764  return Recent;
765  }
766 
768  return const_cast<CXXRecordDecl*>(this)->getMostRecentNonInjectedDecl();
769  }
770 
772  // We only need an update if we don't already know which
773  // declaration is the definition.
774  auto *DD = DefinitionData ? DefinitionData : dataPtr();
775  return DD ? DD->Definition : nullptr;
776  }
777 
778  bool hasDefinition() const { return DefinitionData || dataPtr(); }
779 
780  static CXXRecordDecl *Create(const ASTContext &C, TagKind TK, DeclContext *DC,
781  SourceLocation StartLoc, SourceLocation IdLoc,
783  CXXRecordDecl *PrevDecl = nullptr,
784  bool DelayTypeCreation = false);
785  static CXXRecordDecl *CreateLambda(const ASTContext &C, DeclContext *DC,
786  TypeSourceInfo *Info, SourceLocation Loc,
787  bool DependentLambda, bool IsGeneric,
788  LambdaCaptureDefault CaptureDefault);
789  static CXXRecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID);
790 
791  bool isDynamicClass() const {
792  return data().Polymorphic || data().NumVBases != 0;
793  }
794 
795  /// @returns true if class is dynamic or might be dynamic because the
796  /// definition is incomplete of dependent.
797  bool mayBeDynamicClass() const {
798  return !hasDefinition() || isDynamicClass() || hasAnyDependentBases();
799  }
800 
801  /// @returns true if class is non dynamic or might be non dynamic because the
802  /// definition is incomplete of dependent.
803  bool mayBeNonDynamicClass() const {
804  return !hasDefinition() || !isDynamicClass() || hasAnyDependentBases();
805  }
806 
807  void setIsParsingBaseSpecifiers() { data().IsParsingBaseSpecifiers = true; }
808 
809  bool isParsingBaseSpecifiers() const {
810  return data().IsParsingBaseSpecifiers;
811  }
812 
813  unsigned getODRHash() const;
814 
815  /// Sets the base classes of this struct or class.
816  void setBases(CXXBaseSpecifier const * const *Bases, unsigned NumBases);
817 
818  /// Retrieves the number of base classes of this class.
819  unsigned getNumBases() const { return data().NumBases; }
820 
821  using base_class_range = llvm::iterator_range<base_class_iterator>;
822  using base_class_const_range =
823  llvm::iterator_range<base_class_const_iterator>;
824 
826  return base_class_range(bases_begin(), bases_end());
827  }
829  return base_class_const_range(bases_begin(), bases_end());
830  }
831 
832  base_class_iterator bases_begin() { return data().getBases(); }
833  base_class_const_iterator bases_begin() const { return data().getBases(); }
834  base_class_iterator bases_end() { return bases_begin() + data().NumBases; }
836  return bases_begin() + data().NumBases;
837  }
838 
839  /// Retrieves the number of virtual base classes of this class.
840  unsigned getNumVBases() const { return data().NumVBases; }
841 
843  return base_class_range(vbases_begin(), vbases_end());
844  }
846  return base_class_const_range(vbases_begin(), vbases_end());
847  }
848 
849  base_class_iterator vbases_begin() { return data().getVBases(); }
850  base_class_const_iterator vbases_begin() const { return data().getVBases(); }
851  base_class_iterator vbases_end() { return vbases_begin() + data().NumVBases; }
853  return vbases_begin() + data().NumVBases;
854  }
855 
856  /// Determine whether this class has any dependent base classes which
857  /// are not the current instantiation.
858  bool hasAnyDependentBases() const;
859 
860  /// Iterator access to method members. The method iterator visits
861  /// all method members of the class, including non-instance methods,
862  /// special methods, etc.
864  using method_range =
865  llvm::iterator_range<specific_decl_iterator<CXXMethodDecl>>;
866 
868  return method_range(method_begin(), method_end());
869  }
870 
871  /// Method begin iterator. Iterates in the order the methods
872  /// were declared.
874  return method_iterator(decls_begin());
875  }
876 
877  /// Method past-the-end iterator.
879  return method_iterator(decls_end());
880  }
881 
882  /// Iterator access to constructor members.
884  using ctor_range =
885  llvm::iterator_range<specific_decl_iterator<CXXConstructorDecl>>;
886 
887  ctor_range ctors() const { return ctor_range(ctor_begin(), ctor_end()); }
888 
890  return ctor_iterator(decls_begin());
891  }
892 
894  return ctor_iterator(decls_end());
895  }
896 
897  /// An iterator over friend declarations. All of these are defined
898  /// in DeclFriend.h.
899  class friend_iterator;
900  using friend_range = llvm::iterator_range<friend_iterator>;
901 
902  friend_range friends() const;
903  friend_iterator friend_begin() const;
904  friend_iterator friend_end() const;
905  void pushFriendDecl(FriendDecl *FD);
906 
907  /// Determines whether this record has any friends.
908  bool hasFriends() const {
909  return data().FirstFriend.isValid();
910  }
911 
912  /// \c true if a defaulted copy constructor for this class would be
913  /// deleted.
915  assert((!needsOverloadResolutionForCopyConstructor() ||
916  (data().DeclaredSpecialMembers & SMF_CopyConstructor)) &&
917  "this property has not yet been computed by Sema");
918  return data().DefaultedCopyConstructorIsDeleted;
919  }
920 
921  /// \c true if a defaulted move constructor for this class would be
922  /// deleted.
924  assert((!needsOverloadResolutionForMoveConstructor() ||
925  (data().DeclaredSpecialMembers & SMF_MoveConstructor)) &&
926  "this property has not yet been computed by Sema");
927  return data().DefaultedMoveConstructorIsDeleted;
928  }
929 
930  /// \c true if a defaulted destructor for this class would be deleted.
932  assert((!needsOverloadResolutionForDestructor() ||
933  (data().DeclaredSpecialMembers & SMF_Destructor)) &&
934  "this property has not yet been computed by Sema");
935  return data().DefaultedDestructorIsDeleted;
936  }
937 
938  /// \c true if we know for sure that this class has a single,
939  /// accessible, unambiguous copy constructor that is not deleted.
941  return !hasUserDeclaredCopyConstructor() &&
942  !data().DefaultedCopyConstructorIsDeleted;
943  }
944 
945  /// \c true if we know for sure that this class has a single,
946  /// accessible, unambiguous move constructor that is not deleted.
948  return !hasUserDeclaredMoveConstructor() && hasMoveConstructor() &&
949  !data().DefaultedMoveConstructorIsDeleted;
950  }
951 
952  /// \c true if we know for sure that this class has a single,
953  /// accessible, unambiguous move assignment operator that is not deleted.
954  bool hasSimpleMoveAssignment() const {
955  return !hasUserDeclaredMoveAssignment() && hasMoveAssignment() &&
956  !data().DefaultedMoveAssignmentIsDeleted;
957  }
958 
959  /// \c true if we know for sure that this class has an accessible
960  /// destructor that is not deleted.
961  bool hasSimpleDestructor() const {
962  return !hasUserDeclaredDestructor() &&
963  !data().DefaultedDestructorIsDeleted;
964  }
965 
966  /// Determine whether this class has any default constructors.
967  bool hasDefaultConstructor() const {
968  return (data().DeclaredSpecialMembers & SMF_DefaultConstructor) ||
969  needsImplicitDefaultConstructor();
970  }
971 
972  /// Determine if we need to declare a default constructor for
973  /// this class.
974  ///
975  /// This value is used for lazy creation of default constructors.
977  return !data().UserDeclaredConstructor &&
978  !(data().DeclaredSpecialMembers & SMF_DefaultConstructor) &&
979  // C++14 [expr.prim.lambda]p20:
980  // The closure type associated with a lambda-expression has no
981  // default constructor.
982  !isLambda();
983  }
984 
985  /// Determine whether this class has any user-declared constructors.
986  ///
987  /// When true, a default constructor will not be implicitly declared.
989  return data().UserDeclaredConstructor;
990  }
991 
992  /// Whether this class has a user-provided default constructor
993  /// per C++11.
995  return data().UserProvidedDefaultConstructor;
996  }
997 
998  /// Determine whether this class has a user-declared copy constructor.
999  ///
1000  /// When false, a copy constructor will be implicitly declared.
1002  return data().UserDeclaredSpecialMembers & SMF_CopyConstructor;
1003  }
1004 
1005  /// Determine whether this class needs an implicit copy
1006  /// constructor to be lazily declared.
1008  return !(data().DeclaredSpecialMembers & SMF_CopyConstructor);
1009  }
1010 
1011  /// Determine whether we need to eagerly declare a defaulted copy
1012  /// constructor for this class.
1014  // C++17 [class.copy.ctor]p6:
1015  // If the class definition declares a move constructor or move assignment
1016  // operator, the implicitly declared copy constructor is defined as
1017  // deleted.
1018  // In MSVC mode, sometimes a declared move assignment does not delete an
1019  // implicit copy constructor, so defer this choice to Sema.
1020  if (data().UserDeclaredSpecialMembers &
1021  (SMF_MoveConstructor | SMF_MoveAssignment))
1022  return true;
1023  return data().NeedOverloadResolutionForCopyConstructor;
1024  }
1025 
1026  /// Determine whether an implicit copy constructor for this type
1027  /// would have a parameter with a const-qualified reference type.
1029  return data().ImplicitCopyConstructorCanHaveConstParamForNonVBase &&
1030  (isAbstract() ||
1031  data().ImplicitCopyConstructorCanHaveConstParamForVBase);
1032  }
1033 
1034  /// Determine whether this class has a copy constructor with
1035  /// a parameter type which is a reference to a const-qualified type.
1037  return data().HasDeclaredCopyConstructorWithConstParam ||
1038  (needsImplicitCopyConstructor() &&
1039  implicitCopyConstructorHasConstParam());
1040  }
1041 
1042  /// Whether this class has a user-declared move constructor or
1043  /// assignment operator.
1044  ///
1045  /// When false, a move constructor and assignment operator may be
1046  /// implicitly declared.
1048  return data().UserDeclaredSpecialMembers &
1049  (SMF_MoveConstructor | SMF_MoveAssignment);
1050  }
1051 
1052  /// Determine whether this class has had a move constructor
1053  /// declared by the user.
1055  return data().UserDeclaredSpecialMembers & SMF_MoveConstructor;
1056  }
1057 
1058  /// Determine whether this class has a move constructor.
1059  bool hasMoveConstructor() const {
1060  return (data().DeclaredSpecialMembers & SMF_MoveConstructor) ||
1061  needsImplicitMoveConstructor();
1062  }
1063 
1064  /// Set that we attempted to declare an implicit copy
1065  /// constructor, but overload resolution failed so we deleted it.
1067  assert((data().DefaultedCopyConstructorIsDeleted ||
1068  needsOverloadResolutionForCopyConstructor()) &&
1069  "Copy constructor should not be deleted");
1070  data().DefaultedCopyConstructorIsDeleted = true;
1071  }
1072 
1073  /// Set that we attempted to declare an implicit move
1074  /// constructor, but overload resolution failed so we deleted it.
1076  assert((data().DefaultedMoveConstructorIsDeleted ||
1077  needsOverloadResolutionForMoveConstructor()) &&
1078  "move constructor should not be deleted");
1079  data().DefaultedMoveConstructorIsDeleted = true;
1080  }
1081 
1082  /// Set that we attempted to declare an implicit destructor,
1083  /// but overload resolution failed so we deleted it.
1085  assert((data().DefaultedDestructorIsDeleted ||
1086  needsOverloadResolutionForDestructor()) &&
1087  "destructor should not be deleted");
1088  data().DefaultedDestructorIsDeleted = true;
1089  }
1090 
1091  /// Determine whether this class should get an implicit move
1092  /// constructor or if any existing special member function inhibits this.
1094  return !(data().DeclaredSpecialMembers & SMF_MoveConstructor) &&
1095  !hasUserDeclaredCopyConstructor() &&
1096  !hasUserDeclaredCopyAssignment() &&
1097  !hasUserDeclaredMoveAssignment() &&
1098  !hasUserDeclaredDestructor();
1099  }
1100 
1101  /// Determine whether we need to eagerly declare a defaulted move
1102  /// constructor for this class.
1104  return data().NeedOverloadResolutionForMoveConstructor;
1105  }
1106 
1107  /// Determine whether this class has a user-declared copy assignment
1108  /// operator.
1109  ///
1110  /// When false, a copy assignment operator will be implicitly declared.
1112  return data().UserDeclaredSpecialMembers & SMF_CopyAssignment;
1113  }
1114 
1115  /// Determine whether this class needs an implicit copy
1116  /// assignment operator to be lazily declared.
1118  return !(data().DeclaredSpecialMembers & SMF_CopyAssignment);
1119  }
1120 
1121  /// Determine whether we need to eagerly declare a defaulted copy
1122  /// assignment operator for this class.
1124  return data().HasMutableFields;
1125  }
1126 
1127  /// Determine whether an implicit copy assignment operator for this
1128  /// type would have a parameter with a const-qualified reference type.
1130  return data().ImplicitCopyAssignmentHasConstParam;
1131  }
1132 
1133  /// Determine whether this class has a copy assignment operator with
1134  /// a parameter type which is a reference to a const-qualified type or is not
1135  /// a reference.
1137  return data().HasDeclaredCopyAssignmentWithConstParam ||
1138  (needsImplicitCopyAssignment() &&
1139  implicitCopyAssignmentHasConstParam());
1140  }
1141 
1142  /// Determine whether this class has had a move assignment
1143  /// declared by the user.
1145  return data().UserDeclaredSpecialMembers & SMF_MoveAssignment;
1146  }
1147 
1148  /// Determine whether this class has a move assignment operator.
1149  bool hasMoveAssignment() const {
1150  return (data().DeclaredSpecialMembers & SMF_MoveAssignment) ||
1151  needsImplicitMoveAssignment();
1152  }
1153 
1154  /// Set that we attempted to declare an implicit move assignment
1155  /// operator, but overload resolution failed so we deleted it.
1157  assert((data().DefaultedMoveAssignmentIsDeleted ||
1158  needsOverloadResolutionForMoveAssignment()) &&
1159  "move assignment should not be deleted");
1160  data().DefaultedMoveAssignmentIsDeleted = true;
1161  }
1162 
1163  /// Determine whether this class should get an implicit move
1164  /// assignment operator or if any existing special member function inhibits
1165  /// this.
1167  return !(data().DeclaredSpecialMembers & SMF_MoveAssignment) &&
1168  !hasUserDeclaredCopyConstructor() &&
1169  !hasUserDeclaredCopyAssignment() &&
1170  !hasUserDeclaredMoveConstructor() &&
1171  !hasUserDeclaredDestructor() &&
1172  // C++1z [expr.prim.lambda]p21: "the closure type has a deleted copy
1173  // assignment operator". The intent is that this counts as a user
1174  // declared copy assignment, but we do not model it that way.
1175  !isLambda();
1176  }
1177 
1178  /// Determine whether we need to eagerly declare a move assignment
1179  /// operator for this class.
1181  return data().NeedOverloadResolutionForMoveAssignment;
1182  }
1183 
1184  /// Determine whether this class has a user-declared destructor.
1185  ///
1186  /// When false, a destructor will be implicitly declared.
1188  return data().UserDeclaredSpecialMembers & SMF_Destructor;
1189  }
1190 
1191  /// Determine whether this class needs an implicit destructor to
1192  /// be lazily declared.
1194  return !(data().DeclaredSpecialMembers & SMF_Destructor);
1195  }
1196 
1197  /// Determine whether we need to eagerly declare a destructor for this
1198  /// class.
1200  return data().NeedOverloadResolutionForDestructor;
1201  }
1202 
1203  /// Determine whether this class describes a lambda function object.
1204  bool isLambda() const {
1205  // An update record can't turn a non-lambda into a lambda.
1206  auto *DD = DefinitionData;
1207  return DD && DD->IsLambda;
1208  }
1209 
1210  /// Determine whether this class describes a generic
1211  /// lambda function object (i.e. function call operator is
1212  /// a template).
1213  bool isGenericLambda() const;
1214 
1215  /// Retrieve the lambda call operator of the closure type
1216  /// if this is a closure type.
1217  CXXMethodDecl *getLambdaCallOperator() const;
1218 
1219  /// Retrieve the lambda static invoker, the address of which
1220  /// is returned by the conversion operator, and the body of which
1221  /// is forwarded to the lambda call operator.
1222  CXXMethodDecl *getLambdaStaticInvoker() const;
1223 
1224  /// Retrieve the generic lambda's template parameter list.
1225  /// Returns null if the class does not represent a lambda or a generic
1226  /// lambda.
1228 
1230  assert(isLambda());
1231  return static_cast<LambdaCaptureDefault>(getLambdaData().CaptureDefault);
1232  }
1233 
1234  /// For a closure type, retrieve the mapping from captured
1235  /// variables and \c this to the non-static data members that store the
1236  /// values or references of the captures.
1237  ///
1238  /// \param Captures Will be populated with the mapping from captured
1239  /// variables to the corresponding fields.
1240  ///
1241  /// \param ThisCapture Will be set to the field declaration for the
1242  /// \c this capture.
1243  ///
1244  /// \note No entries will be added for init-captures, as they do not capture
1245  /// variables.
1246  void getCaptureFields(llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures,
1247  FieldDecl *&ThisCapture) const;
1248 
1250  using capture_const_range = llvm::iterator_range<capture_const_iterator>;
1251 
1253  return capture_const_range(captures_begin(), captures_end());
1254  }
1255 
1257  return isLambda() ? getLambdaData().Captures : nullptr;
1258  }
1259 
1261  return isLambda() ? captures_begin() + getLambdaData().NumCaptures
1262  : nullptr;
1263  }
1264 
1266 
1268  return data().Conversions.get(getASTContext()).begin();
1269  }
1270 
1272  return data().Conversions.get(getASTContext()).end();
1273  }
1274 
1275  /// Removes a conversion function from this class. The conversion
1276  /// function must currently be a member of this class. Furthermore,
1277  /// this class must currently be in the process of being defined.
1278  void removeConversion(const NamedDecl *Old);
1279 
1280  /// Get all conversion functions visible in current class,
1281  /// including conversion function templates.
1282  llvm::iterator_range<conversion_iterator> getVisibleConversionFunctions();
1283 
1284  /// Determine whether this class is an aggregate (C++ [dcl.init.aggr]),
1285  /// which is a class with no user-declared constructors, no private
1286  /// or protected non-static data members, no base classes, and no virtual
1287  /// functions (C++ [dcl.init.aggr]p1).
1288  bool isAggregate() const { return data().Aggregate; }
1289 
1290  /// Whether this class has any in-class initializers
1291  /// for non-static data members (including those in anonymous unions or
1292  /// structs).
1293  bool hasInClassInitializer() const { return data().HasInClassInitializer; }
1294 
1295  /// Whether this class or any of its subobjects has any members of
1296  /// reference type which would make value-initialization ill-formed.
1297  ///
1298  /// Per C++03 [dcl.init]p5:
1299  /// - if T is a non-union class type without a user-declared constructor,
1300  /// then every non-static data member and base-class component of T is
1301  /// value-initialized [...] A program that calls for [...]
1302  /// value-initialization of an entity of reference type is ill-formed.
1304  return !isUnion() && !hasUserDeclaredConstructor() &&
1305  data().HasUninitializedReferenceMember;
1306  }
1307 
1308  /// Whether this class is a POD-type (C++ [class]p4)
1309  ///
1310  /// For purposes of this function a class is POD if it is an aggregate
1311  /// that has no non-static non-POD data members, no reference data
1312  /// members, no user-defined copy assignment operator and no
1313  /// user-defined destructor.
1314  ///
1315  /// Note that this is the C++ TR1 definition of POD.
1316  bool isPOD() const { return data().PlainOldData; }
1317 
1318  /// True if this class is C-like, without C++-specific features, e.g.
1319  /// it contains only public fields, no bases, tag kind is not 'class', etc.
1320  bool isCLike() const;
1321 
1322  /// Determine whether this is an empty class in the sense of
1323  /// (C++11 [meta.unary.prop]).
1324  ///
1325  /// The CXXRecordDecl is a class type, but not a union type,
1326  /// with no non-static data members other than bit-fields of length 0,
1327  /// no virtual member functions, no virtual base classes,
1328  /// and no base class B for which is_empty<B>::value is false.
1329  ///
1330  /// \note This does NOT include a check for union-ness.
1331  bool isEmpty() const { return data().Empty; }
1332 
1333  /// Determine whether this class has direct non-static data members.
1334  bool hasDirectFields() const {
1335  auto &D = data();
1336  return D.HasPublicFields || D.HasProtectedFields || D.HasPrivateFields;
1337  }
1338 
1339  /// Whether this class is polymorphic (C++ [class.virtual]),
1340  /// which means that the class contains or inherits a virtual function.
1341  bool isPolymorphic() const { return data().Polymorphic; }
1342 
1343  /// Determine whether this class has a pure virtual function.
1344  ///
1345  /// The class is is abstract per (C++ [class.abstract]p2) if it declares
1346  /// a pure virtual function or inherits a pure virtual function that is
1347  /// not overridden.
1348  bool isAbstract() const { return data().Abstract; }
1349 
1350  /// Determine whether this class is standard-layout per
1351  /// C++ [class]p7.
1352  bool isStandardLayout() const { return data().IsStandardLayout; }
1353 
1354  /// Determine whether this class was standard-layout per
1355  /// C++11 [class]p7, specifically using the C++11 rules without any DRs.
1356  bool isCXX11StandardLayout() const { return data().IsCXX11StandardLayout; }
1357 
1358  /// Determine whether this class, or any of its class subobjects,
1359  /// contains a mutable field.
1360  bool hasMutableFields() const { return data().HasMutableFields; }
1361 
1362  /// Determine whether this class has any variant members.
1363  bool hasVariantMembers() const { return data().HasVariantMembers; }
1364 
1365  /// Determine whether this class has a trivial default constructor
1366  /// (C++11 [class.ctor]p5).
1368  return hasDefaultConstructor() &&
1369  (data().HasTrivialSpecialMembers & SMF_DefaultConstructor);
1370  }
1371 
1372  /// Determine whether this class has a non-trivial default constructor
1373  /// (C++11 [class.ctor]p5).
1375  return (data().DeclaredNonTrivialSpecialMembers & SMF_DefaultConstructor) ||
1376  (needsImplicitDefaultConstructor() &&
1377  !(data().HasTrivialSpecialMembers & SMF_DefaultConstructor));
1378  }
1379 
1380  /// Determine whether this class has at least one constexpr constructor
1381  /// other than the copy or move constructors.
1383  return data().HasConstexprNonCopyMoveConstructor ||
1384  (needsImplicitDefaultConstructor() &&
1385  defaultedDefaultConstructorIsConstexpr());
1386  }
1387 
1388  /// Determine whether a defaulted default constructor for this class
1389  /// would be constexpr.
1391  return data().DefaultedDefaultConstructorIsConstexpr &&
1392  (!isUnion() || hasInClassInitializer() || !hasVariantMembers());
1393  }
1394 
1395  /// Determine whether this class has a constexpr default constructor.
1397  return data().HasConstexprDefaultConstructor ||
1398  (needsImplicitDefaultConstructor() &&
1399  defaultedDefaultConstructorIsConstexpr());
1400  }
1401 
1402  /// Determine whether this class has a trivial copy constructor
1403  /// (C++ [class.copy]p6, C++11 [class.copy]p12)
1405  return data().HasTrivialSpecialMembers & SMF_CopyConstructor;
1406  }
1407 
1409  return data().HasTrivialSpecialMembersForCall & SMF_CopyConstructor;
1410  }
1411 
1412  /// Determine whether this class has a non-trivial copy constructor
1413  /// (C++ [class.copy]p6, C++11 [class.copy]p12)
1415  return data().DeclaredNonTrivialSpecialMembers & SMF_CopyConstructor ||
1416  !hasTrivialCopyConstructor();
1417  }
1418 
1420  return (data().DeclaredNonTrivialSpecialMembersForCall &
1421  SMF_CopyConstructor) ||
1422  !hasTrivialCopyConstructorForCall();
1423  }
1424 
1425  /// Determine whether this class has a trivial move constructor
1426  /// (C++11 [class.copy]p12)
1428  return hasMoveConstructor() &&
1429  (data().HasTrivialSpecialMembers & SMF_MoveConstructor);
1430  }
1431 
1433  return hasMoveConstructor() &&
1434  (data().HasTrivialSpecialMembersForCall & SMF_MoveConstructor);
1435  }
1436 
1437  /// Determine whether this class has a non-trivial move constructor
1438  /// (C++11 [class.copy]p12)
1440  return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveConstructor) ||
1441  (needsImplicitMoveConstructor() &&
1442  !(data().HasTrivialSpecialMembers & SMF_MoveConstructor));
1443  }
1444 
1446  return (data().DeclaredNonTrivialSpecialMembersForCall &
1447  SMF_MoveConstructor) ||
1448  (needsImplicitMoveConstructor() &&
1449  !(data().HasTrivialSpecialMembersForCall & SMF_MoveConstructor));
1450  }
1451 
1452  /// Determine whether this class has a trivial copy assignment operator
1453  /// (C++ [class.copy]p11, C++11 [class.copy]p25)
1455  return data().HasTrivialSpecialMembers & SMF_CopyAssignment;
1456  }
1457 
1458  /// Determine whether this class has a non-trivial copy assignment
1459  /// operator (C++ [class.copy]p11, C++11 [class.copy]p25)
1461  return data().DeclaredNonTrivialSpecialMembers & SMF_CopyAssignment ||
1462  !hasTrivialCopyAssignment();
1463  }
1464 
1465  /// Determine whether this class has a trivial move assignment operator
1466  /// (C++11 [class.copy]p25)
1468  return hasMoveAssignment() &&
1469  (data().HasTrivialSpecialMembers & SMF_MoveAssignment);
1470  }
1471 
1472  /// Determine whether this class has a non-trivial move assignment
1473  /// operator (C++11 [class.copy]p25)
1475  return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveAssignment) ||
1476  (needsImplicitMoveAssignment() &&
1477  !(data().HasTrivialSpecialMembers & SMF_MoveAssignment));
1478  }
1479 
1480  /// Determine whether this class has a trivial destructor
1481  /// (C++ [class.dtor]p3)
1482  bool hasTrivialDestructor() const {
1483  return data().HasTrivialSpecialMembers & SMF_Destructor;
1484  }
1485 
1487  return data().HasTrivialSpecialMembersForCall & SMF_Destructor;
1488  }
1489 
1490  /// Determine whether this class has a non-trivial destructor
1491  /// (C++ [class.dtor]p3)
1493  return !(data().HasTrivialSpecialMembers & SMF_Destructor);
1494  }
1495 
1497  return !(data().HasTrivialSpecialMembersForCall & SMF_Destructor);
1498  }
1499 
1501  data().HasTrivialSpecialMembersForCall =
1502  (SMF_CopyConstructor | SMF_MoveConstructor | SMF_Destructor);
1503  }
1504 
1505  /// Determine whether declaring a const variable with this type is ok
1506  /// per core issue 253.
1507  bool allowConstDefaultInit() const {
1508  return !data().HasUninitializedFields ||
1509  !(data().HasDefaultedDefaultConstructor ||
1510  needsImplicitDefaultConstructor());
1511  }
1512 
1513  /// Determine whether this class has a destructor which has no
1514  /// semantic effect.
1515  ///
1516  /// Any such destructor will be trivial, public, defaulted and not deleted,
1517  /// and will call only irrelevant destructors.
1519  return data().HasIrrelevantDestructor;
1520  }
1521 
1522  /// Determine whether this class has a non-literal or/ volatile type
1523  /// non-static data member or base class.
1525  return data().HasNonLiteralTypeFieldsOrBases;
1526  }
1527 
1528  /// Determine whether this class has a using-declaration that names
1529  /// a user-declared base class constructor.
1531  return data().HasInheritedConstructor;
1532  }
1533 
1534  /// Determine whether this class has a using-declaration that names
1535  /// a base class assignment operator.
1536  bool hasInheritedAssignment() const {
1537  return data().HasInheritedAssignment;
1538  }
1539 
1540  /// Determine whether this class is considered trivially copyable per
1541  /// (C++11 [class]p6).
1542  bool isTriviallyCopyable() const;
1543 
1544  /// Determine whether this class is considered trivial.
1545  ///
1546  /// C++11 [class]p6:
1547  /// "A trivial class is a class that has a trivial default constructor and
1548  /// is trivially copiable."
1549  bool isTrivial() const {
1550  return isTriviallyCopyable() && hasTrivialDefaultConstructor();
1551  }
1552 
1553  /// Determine whether this class is a literal type.
1554  ///
1555  /// C++11 [basic.types]p10:
1556  /// A class type that has all the following properties:
1557  /// - it has a trivial destructor
1558  /// - every constructor call and full-expression in the
1559  /// brace-or-equal-intializers for non-static data members (if any) is
1560  /// a constant expression.
1561  /// - it is an aggregate type or has at least one constexpr constructor
1562  /// or constructor template that is not a copy or move constructor, and
1563  /// - all of its non-static data members and base classes are of literal
1564  /// types
1565  ///
1566  /// We resolve DR1361 by ignoring the second bullet. We resolve DR1452 by
1567  /// treating types with trivial default constructors as literal types.
1568  ///
1569  /// Only in C++17 and beyond, are lambdas literal types.
1570  bool isLiteral() const {
1571  return hasTrivialDestructor() &&
1572  (!isLambda() || getASTContext().getLangOpts().CPlusPlus17) &&
1573  !hasNonLiteralTypeFieldsOrBases() &&
1574  (isAggregate() || isLambda() ||
1575  hasConstexprNonCopyMoveConstructor() ||
1576  hasTrivialDefaultConstructor());
1577  }
1578 
1579  /// If this record is an instantiation of a member class,
1580  /// retrieves the member class from which it was instantiated.
1581  ///
1582  /// This routine will return non-null for (non-templated) member
1583  /// classes of class templates. For example, given:
1584  ///
1585  /// \code
1586  /// template<typename T>
1587  /// struct X {
1588  /// struct A { };
1589  /// };
1590  /// \endcode
1591  ///
1592  /// The declaration for X<int>::A is a (non-templated) CXXRecordDecl
1593  /// whose parent is the class template specialization X<int>. For
1594  /// this declaration, getInstantiatedFromMemberClass() will return
1595  /// the CXXRecordDecl X<T>::A. When a complete definition of
1596  /// X<int>::A is required, it will be instantiated from the
1597  /// declaration returned by getInstantiatedFromMemberClass().
1598  CXXRecordDecl *getInstantiatedFromMemberClass() const;
1599 
1600  /// If this class is an instantiation of a member class of a
1601  /// class template specialization, retrieves the member specialization
1602  /// information.
1603  MemberSpecializationInfo *getMemberSpecializationInfo() const;
1604 
1605  /// Specify that this record is an instantiation of the
1606  /// member class \p RD.
1607  void setInstantiationOfMemberClass(CXXRecordDecl *RD,
1609 
1610  /// Retrieves the class template that is described by this
1611  /// class declaration.
1612  ///
1613  /// Every class template is represented as a ClassTemplateDecl and a
1614  /// CXXRecordDecl. The former contains template properties (such as
1615  /// the template parameter lists) while the latter contains the
1616  /// actual description of the template's
1617  /// contents. ClassTemplateDecl::getTemplatedDecl() retrieves the
1618  /// CXXRecordDecl that from a ClassTemplateDecl, while
1619  /// getDescribedClassTemplate() retrieves the ClassTemplateDecl from
1620  /// a CXXRecordDecl.
1621  ClassTemplateDecl *getDescribedClassTemplate() const;
1622 
1623  void setDescribedClassTemplate(ClassTemplateDecl *Template);
1624 
1625  /// Determine whether this particular class is a specialization or
1626  /// instantiation of a class template or member class of a class template,
1627  /// and how it was instantiated or specialized.
1629 
1630  /// Set the kind of specialization or template instantiation this is.
1631  void setTemplateSpecializationKind(TemplateSpecializationKind TSK);
1632 
1633  /// Retrieve the record declaration from which this record could be
1634  /// instantiated. Returns null if this class is not a template instantiation.
1635  const CXXRecordDecl *getTemplateInstantiationPattern() const;
1636 
1638  return const_cast<CXXRecordDecl *>(const_cast<const CXXRecordDecl *>(this)
1639  ->getTemplateInstantiationPattern());
1640  }
1641 
1642  /// Returns the destructor decl for this class.
1643  CXXDestructorDecl *getDestructor() const;
1644 
1645  /// Returns true if the class destructor, or any implicitly invoked
1646  /// destructors are marked noreturn.
1647  bool isAnyDestructorNoReturn() const;
1648 
1649  /// If the class is a local class [class.local], returns
1650  /// the enclosing function declaration.
1651  const FunctionDecl *isLocalClass() const {
1652  if (const auto *RD = dyn_cast<CXXRecordDecl>(getDeclContext()))
1653  return RD->isLocalClass();
1654 
1655  return dyn_cast<FunctionDecl>(getDeclContext());
1656  }
1657 
1659  return const_cast<FunctionDecl*>(
1660  const_cast<const CXXRecordDecl*>(this)->isLocalClass());
1661  }
1662 
1663  /// Determine whether this dependent class is a current instantiation,
1664  /// when viewed from within the given context.
1665  bool isCurrentInstantiation(const DeclContext *CurContext) const;
1666 
1667  /// Determine whether this class is derived from the class \p Base.
1668  ///
1669  /// This routine only determines whether this class is derived from \p Base,
1670  /// but does not account for factors that may make a Derived -> Base class
1671  /// ill-formed, such as private/protected inheritance or multiple, ambiguous
1672  /// base class subobjects.
1673  ///
1674  /// \param Base the base class we are searching for.
1675  ///
1676  /// \returns true if this class is derived from Base, false otherwise.
1677  bool isDerivedFrom(const CXXRecordDecl *Base) const;
1678 
1679  /// Determine whether this class is derived from the type \p Base.
1680  ///
1681  /// This routine only determines whether this class is derived from \p Base,
1682  /// but does not account for factors that may make a Derived -> Base class
1683  /// ill-formed, such as private/protected inheritance or multiple, ambiguous
1684  /// base class subobjects.
1685  ///
1686  /// \param Base the base class we are searching for.
1687  ///
1688  /// \param Paths will contain the paths taken from the current class to the
1689  /// given \p Base class.
1690  ///
1691  /// \returns true if this class is derived from \p Base, false otherwise.
1692  ///
1693  /// \todo add a separate parameter to configure IsDerivedFrom, rather than
1694  /// tangling input and output in \p Paths
1695  bool isDerivedFrom(const CXXRecordDecl *Base, CXXBasePaths &Paths) const;
1696 
1697  /// Determine whether this class is virtually derived from
1698  /// the class \p Base.
1699  ///
1700  /// This routine only determines whether this class is virtually
1701  /// derived from \p Base, but does not account for factors that may
1702  /// make a Derived -> Base class ill-formed, such as
1703  /// private/protected inheritance or multiple, ambiguous base class
1704  /// subobjects.
1705  ///
1706  /// \param Base the base class we are searching for.
1707  ///
1708  /// \returns true if this class is virtually derived from Base,
1709  /// false otherwise.
1710  bool isVirtuallyDerivedFrom(const CXXRecordDecl *Base) const;
1711 
1712  /// Determine whether this class is provably not derived from
1713  /// the type \p Base.
1714  bool isProvablyNotDerivedFrom(const CXXRecordDecl *Base) const;
1715 
1716  /// Function type used by forallBases() as a callback.
1717  ///
1718  /// \param BaseDefinition the definition of the base class
1719  ///
1720  /// \returns true if this base matched the search criteria
1721  using ForallBasesCallback =
1722  llvm::function_ref<bool(const CXXRecordDecl *BaseDefinition)>;
1723 
1724  /// Determines if the given callback holds for all the direct
1725  /// or indirect base classes of this type.
1726  ///
1727  /// The class itself does not count as a base class. This routine
1728  /// returns false if the class has non-computable base classes.
1729  ///
1730  /// \param BaseMatches Callback invoked for each (direct or indirect) base
1731  /// class of this type, or if \p AllowShortCircuit is true then until a call
1732  /// returns false.
1733  ///
1734  /// \param AllowShortCircuit if false, forces the callback to be called
1735  /// for every base class, even if a dependent or non-matching base was
1736  /// found.
1737  bool forallBases(ForallBasesCallback BaseMatches,
1738  bool AllowShortCircuit = true) const;
1739 
1740  /// Function type used by lookupInBases() to determine whether a
1741  /// specific base class subobject matches the lookup criteria.
1742  ///
1743  /// \param Specifier the base-class specifier that describes the inheritance
1744  /// from the base class we are trying to match.
1745  ///
1746  /// \param Path the current path, from the most-derived class down to the
1747  /// base named by the \p Specifier.
1748  ///
1749  /// \returns true if this base matched the search criteria, false otherwise.
1750  using BaseMatchesCallback =
1751  llvm::function_ref<bool(const CXXBaseSpecifier *Specifier,
1752  CXXBasePath &Path)>;
1753 
1754  /// Look for entities within the base classes of this C++ class,
1755  /// transitively searching all base class subobjects.
1756  ///
1757  /// This routine uses the callback function \p BaseMatches to find base
1758  /// classes meeting some search criteria, walking all base class subobjects
1759  /// and populating the given \p Paths structure with the paths through the
1760  /// inheritance hierarchy that resulted in a match. On a successful search,
1761  /// the \p Paths structure can be queried to retrieve the matching paths and
1762  /// to determine if there were any ambiguities.
1763  ///
1764  /// \param BaseMatches callback function used to determine whether a given
1765  /// base matches the user-defined search criteria.
1766  ///
1767  /// \param Paths used to record the paths from this class to its base class
1768  /// subobjects that match the search criteria.
1769  ///
1770  /// \param LookupInDependent can be set to true to extend the search to
1771  /// dependent base classes.
1772  ///
1773  /// \returns true if there exists any path from this class to a base class
1774  /// subobject that matches the search criteria.
1775  bool lookupInBases(BaseMatchesCallback BaseMatches, CXXBasePaths &Paths,
1776  bool LookupInDependent = false) const;
1777 
1778  /// Base-class lookup callback that determines whether the given
1779  /// base class specifier refers to a specific class declaration.
1780  ///
1781  /// This callback can be used with \c lookupInBases() to determine whether
1782  /// a given derived class has is a base class subobject of a particular type.
1783  /// The base record pointer should refer to the canonical CXXRecordDecl of the
1784  /// base class that we are searching for.
1785  static bool FindBaseClass(const CXXBaseSpecifier *Specifier,
1786  CXXBasePath &Path, const CXXRecordDecl *BaseRecord);
1787 
1788  /// Base-class lookup callback that determines whether the
1789  /// given base class specifier refers to a specific class
1790  /// declaration and describes virtual derivation.
1791  ///
1792  /// This callback can be used with \c lookupInBases() to determine
1793  /// whether a given derived class has is a virtual base class
1794  /// subobject of a particular type. The base record pointer should
1795  /// refer to the canonical CXXRecordDecl of the base class that we
1796  /// are searching for.
1797  static bool FindVirtualBaseClass(const CXXBaseSpecifier *Specifier,
1798  CXXBasePath &Path,
1799  const CXXRecordDecl *BaseRecord);
1800 
1801  /// Base-class lookup callback that determines whether there exists
1802  /// a tag with the given name.
1803  ///
1804  /// This callback can be used with \c lookupInBases() to find tag members
1805  /// of the given name within a C++ class hierarchy.
1806  static bool FindTagMember(const CXXBaseSpecifier *Specifier,
1807  CXXBasePath &Path, DeclarationName Name);
1808 
1809  /// Base-class lookup callback that determines whether there exists
1810  /// a member with the given name.
1811  ///
1812  /// This callback can be used with \c lookupInBases() to find members
1813  /// of the given name within a C++ class hierarchy.
1814  static bool FindOrdinaryMember(const CXXBaseSpecifier *Specifier,
1815  CXXBasePath &Path, DeclarationName Name);
1816 
1817  /// Base-class lookup callback that determines whether there exists
1818  /// a member with the given name.
1819  ///
1820  /// This callback can be used with \c lookupInBases() to find members
1821  /// of the given name within a C++ class hierarchy, including dependent
1822  /// classes.
1823  static bool
1824  FindOrdinaryMemberInDependentClasses(const CXXBaseSpecifier *Specifier,
1825  CXXBasePath &Path, DeclarationName Name);
1826 
1827  /// Base-class lookup callback that determines whether there exists
1828  /// an OpenMP declare reduction member with the given name.
1829  ///
1830  /// This callback can be used with \c lookupInBases() to find members
1831  /// of the given name within a C++ class hierarchy.
1832  static bool FindOMPReductionMember(const CXXBaseSpecifier *Specifier,
1833  CXXBasePath &Path, DeclarationName Name);
1834 
1835  /// Base-class lookup callback that determines whether there exists
1836  /// a member with the given name that can be used in a nested-name-specifier.
1837  ///
1838  /// This callback can be used with \c lookupInBases() to find members of
1839  /// the given name within a C++ class hierarchy that can occur within
1840  /// nested-name-specifiers.
1841  static bool FindNestedNameSpecifierMember(const CXXBaseSpecifier *Specifier,
1842  CXXBasePath &Path,
1843  DeclarationName Name);
1844 
1845  /// Retrieve the final overriders for each virtual member
1846  /// function in the class hierarchy where this class is the
1847  /// most-derived class in the class hierarchy.
1848  void getFinalOverriders(CXXFinalOverriderMap &FinaOverriders) const;
1849 
1850  /// Get the indirect primary bases for this class.
1851  void getIndirectPrimaryBases(CXXIndirectPrimaryBaseSet& Bases) const;
1852 
1853  /// Performs an imprecise lookup of a dependent name in this class.
1854  ///
1855  /// This function does not follow strict semantic rules and should be used
1856  /// only when lookup rules can be relaxed, e.g. indexing.
1857  std::vector<const NamedDecl *>
1858  lookupDependentName(const DeclarationName &Name,
1859  llvm::function_ref<bool(const NamedDecl *ND)> Filter);
1860 
1861  /// Renders and displays an inheritance diagram
1862  /// for this C++ class and all of its base classes (transitively) using
1863  /// GraphViz.
1864  void viewInheritance(ASTContext& Context) const;
1865 
1866  /// Calculates the access of a decl that is reached
1867  /// along a path.
1869  AccessSpecifier DeclAccess) {
1870  assert(DeclAccess != AS_none);
1871  if (DeclAccess == AS_private) return AS_none;
1872  return (PathAccess > DeclAccess ? PathAccess : DeclAccess);
1873  }
1874 
1875  /// Indicates that the declaration of a defaulted or deleted special
1876  /// member function is now complete.
1877  void finishedDefaultedOrDeletedMember(CXXMethodDecl *MD);
1878 
1879  void setTrivialForCallFlags(CXXMethodDecl *MD);
1880 
1881  /// Indicates that the definition of this class is now complete.
1882  void completeDefinition() override;
1883 
1884  /// Indicates that the definition of this class is now complete,
1885  /// and provides a final overrider map to help determine
1886  ///
1887  /// \param FinalOverriders The final overrider map for this class, which can
1888  /// be provided as an optimization for abstract-class checking. If NULL,
1889  /// final overriders will be computed if they are needed to complete the
1890  /// definition.
1891  void completeDefinition(CXXFinalOverriderMap *FinalOverriders);
1892 
1893  /// Determine whether this class may end up being abstract, even though
1894  /// it is not yet known to be abstract.
1895  ///
1896  /// \returns true if this class is not known to be abstract but has any
1897  /// base classes that are abstract. In this case, \c completeDefinition()
1898  /// will need to compute final overriders to determine whether the class is
1899  /// actually abstract.
1900  bool mayBeAbstract() const;
1901 
1902  /// If this is the closure type of a lambda expression, retrieve the
1903  /// number to be used for name mangling in the Itanium C++ ABI.
1904  ///
1905  /// Zero indicates that this closure type has internal linkage, so the
1906  /// mangling number does not matter, while a non-zero value indicates which
1907  /// lambda expression this is in this particular context.
1908  unsigned getLambdaManglingNumber() const {
1909  assert(isLambda() && "Not a lambda closure type!");
1910  return getLambdaData().ManglingNumber;
1911  }
1912 
1913  /// Retrieve the declaration that provides additional context for a
1914  /// lambda, when the normal declaration context is not specific enough.
1915  ///
1916  /// Certain contexts (default arguments of in-class function parameters and
1917  /// the initializers of data members) have separate name mangling rules for
1918  /// lambdas within the Itanium C++ ABI. For these cases, this routine provides
1919  /// the declaration in which the lambda occurs, e.g., the function parameter
1920  /// or the non-static data member. Otherwise, it returns NULL to imply that
1921  /// the declaration context suffices.
1922  Decl *getLambdaContextDecl() const;
1923 
1924  /// Set the mangling number and context declaration for a lambda
1925  /// class.
1926  void setLambdaMangling(unsigned ManglingNumber, Decl *ContextDecl) {
1927  getLambdaData().ManglingNumber = ManglingNumber;
1928  getLambdaData().ContextDecl = ContextDecl;
1929  }
1930 
1931  /// Returns the inheritance model used for this record.
1932  MSInheritanceAttr::Spelling getMSInheritanceModel() const;
1933 
1934  /// Calculate what the inheritance model would be for this class.
1935  MSInheritanceAttr::Spelling calculateInheritanceModel() const;
1936 
1937  /// In the Microsoft C++ ABI, use zero for the field offset of a null data
1938  /// member pointer if we can guarantee that zero is not a valid field offset,
1939  /// or if the member pointer has multiple fields. Polymorphic classes have a
1940  /// vfptr at offset zero, so we can use zero for null. If there are multiple
1941  /// fields, we can use zero even if it is a valid field offset because
1942  /// null-ness testing will check the other fields.
1943  bool nullFieldOffsetIsZero() const {
1944  return !MSInheritanceAttr::hasOnlyOneField(/*IsMemberFunction=*/false,
1945  getMSInheritanceModel()) ||
1946  (hasDefinition() && isPolymorphic());
1947  }
1948 
1949  /// Controls when vtordisps will be emitted if this record is used as a
1950  /// virtual base.
1951  MSVtorDispAttr::Mode getMSVtorDispMode() const;
1952 
1953  /// Determine whether this lambda expression was known to be dependent
1954  /// at the time it was created, even if its context does not appear to be
1955  /// dependent.
1956  ///
1957  /// This flag is a workaround for an issue with parsing, where default
1958  /// arguments are parsed before their enclosing function declarations have
1959  /// been created. This means that any lambda expressions within those
1960  /// default arguments will have as their DeclContext the context enclosing
1961  /// the function declaration, which may be non-dependent even when the
1962  /// function declaration itself is dependent. This flag indicates when we
1963  /// know that the lambda is dependent despite that.
1964  bool isDependentLambda() const {
1965  return isLambda() && getLambdaData().Dependent;
1966  }
1967 
1969  return getLambdaData().MethodTyInfo;
1970  }
1971 
1972  // Determine whether this type is an Interface Like type for
1973  // __interface inheritance purposes.
1974  bool isInterfaceLike() const;
1975 
1976  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
1977  static bool classofKind(Kind K) {
1978  return K >= firstCXXRecord && K <= lastCXXRecord;
1979  }
1980 };
1981 
1982 /// Represents a C++ deduction guide declaration.
1983 ///
1984 /// \code
1985 /// template<typename T> struct A { A(); A(T); };
1986 /// A() -> A<int>;
1987 /// \endcode
1988 ///
1989 /// In this example, there will be an explicit deduction guide from the
1990 /// second line, and implicit deduction guide templates synthesized from
1991 /// the constructors of \c A.
1993  void anchor() override;
1994 
1995 private:
1997  bool IsExplicit, const DeclarationNameInfo &NameInfo,
1998  QualType T, TypeSourceInfo *TInfo,
1999  SourceLocation EndLocation)
2000  : FunctionDecl(CXXDeductionGuide, C, DC, StartLoc, NameInfo, T, TInfo,
2001  SC_None, false, false) {
2002  if (EndLocation.isValid())
2003  setRangeEnd(EndLocation);
2004  IsExplicitSpecified = IsExplicit;
2005  }
2006 
2007 public:
2008  friend class ASTDeclReader;
2009  friend class ASTDeclWriter;
2010 
2012  SourceLocation StartLoc, bool IsExplicit,
2013  const DeclarationNameInfo &NameInfo,
2014  QualType T, TypeSourceInfo *TInfo,
2015  SourceLocation EndLocation);
2016 
2017  static CXXDeductionGuideDecl *CreateDeserialized(ASTContext &C, unsigned ID);
2018 
2019  /// Whether this deduction guide is explicit.
2020  bool isExplicit() const { return IsExplicitSpecified; }
2021 
2022  /// Whether this deduction guide was declared with the 'explicit' specifier.
2023  bool isExplicitSpecified() const { return IsExplicitSpecified; }
2024 
2025  /// Get the template for which this guide performs deduction.
2027  return getDeclName().getCXXDeductionGuideTemplate();
2028  }
2029 
2031  IsCopyDeductionCandidate = true;
2032  }
2033 
2034  bool isCopyDeductionCandidate() const { return IsCopyDeductionCandidate; }
2035 
2036  // Implement isa/cast/dyncast/etc.
2037  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2038  static bool classofKind(Kind K) { return K == CXXDeductionGuide; }
2039 };
2040 
2041 /// Represents a static or instance method of a struct/union/class.
2042 ///
2043 /// In the terminology of the C++ Standard, these are the (static and
2044 /// non-static) member functions, whether virtual or not.
2045 class CXXMethodDecl : public FunctionDecl {
2046  void anchor() override;
2047 
2048 protected:
2050  SourceLocation StartLoc, const DeclarationNameInfo &NameInfo,
2051  QualType T, TypeSourceInfo *TInfo,
2052  StorageClass SC, bool isInline,
2053  bool isConstexpr, SourceLocation EndLocation)
2054  : FunctionDecl(DK, C, RD, StartLoc, NameInfo, T, TInfo,
2055  SC, isInline, isConstexpr) {
2056  if (EndLocation.isValid())
2057  setRangeEnd(EndLocation);
2058  }
2059 
2060 public:
2061  static CXXMethodDecl *Create(ASTContext &C, CXXRecordDecl *RD,
2062  SourceLocation StartLoc,
2063  const DeclarationNameInfo &NameInfo,
2064  QualType T, TypeSourceInfo *TInfo,
2065  StorageClass SC,
2066  bool isInline,
2067  bool isConstexpr,
2068  SourceLocation EndLocation);
2069 
2070  static CXXMethodDecl *CreateDeserialized(ASTContext &C, unsigned ID);
2071 
2072  bool isStatic() const;
2073  bool isInstance() const { return !isStatic(); }
2074 
2075  /// Returns true if the given operator is implicitly static in a record
2076  /// context.
2078  // [class.free]p1:
2079  // Any allocation function for a class T is a static member
2080  // (even if not explicitly declared static).
2081  // [class.free]p6 Any deallocation function for a class X is a static member
2082  // (even if not explicitly declared static).
2083  return OOK == OO_New || OOK == OO_Array_New || OOK == OO_Delete ||
2084  OOK == OO_Array_Delete;
2085  }
2086 
2087  bool isConst() const { return getType()->castAs<FunctionType>()->isConst(); }
2088  bool isVolatile() const { return getType()->castAs<FunctionType>()->isVolatile(); }
2089 
2090  bool isVirtual() const {
2091  CXXMethodDecl *CD = const_cast<CXXMethodDecl*>(this)->getCanonicalDecl();
2092 
2093  // Member function is virtual if it is marked explicitly so, or if it is
2094  // declared in __interface -- then it is automatically pure virtual.
2095  if (CD->isVirtualAsWritten() || CD->isPure())
2096  return true;
2097 
2098  return CD->size_overridden_methods() != 0;
2099  }
2100 
2101  /// If it's possible to devirtualize a call to this method, return the called
2102  /// function. Otherwise, return null.
2103 
2104  /// \param Base The object on which this virtual function is called.
2105  /// \param IsAppleKext True if we are compiling for Apple kext.
2106  CXXMethodDecl *getDevirtualizedMethod(const Expr *Base, bool IsAppleKext);
2107 
2109  bool IsAppleKext) const {
2110  return const_cast<CXXMethodDecl *>(this)->getDevirtualizedMethod(
2111  Base, IsAppleKext);
2112  }
2113 
2114  /// Determine whether this is a usual deallocation function
2115  /// (C++ [basic.stc.dynamic.deallocation]p2), which is an overloaded
2116  /// delete or delete[] operator with a particular signature.
2117  bool isUsualDeallocationFunction() const;
2118 
2119  /// Determine whether this is a copy-assignment operator, regardless
2120  /// of whether it was declared implicitly or explicitly.
2121  bool isCopyAssignmentOperator() const;
2122 
2123  /// Determine whether this is a move assignment operator.
2124  bool isMoveAssignmentOperator() const;
2125 
2127  return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl());
2128  }
2130  return const_cast<CXXMethodDecl*>(this)->getCanonicalDecl();
2131  }
2132 
2134  return cast<CXXMethodDecl>(
2135  static_cast<FunctionDecl *>(this)->getMostRecentDecl());
2136  }
2138  return const_cast<CXXMethodDecl*>(this)->getMostRecentDecl();
2139  }
2140 
2141  /// True if this method is user-declared and was not
2142  /// deleted or defaulted on its first declaration.
2143  bool isUserProvided() const {
2144  auto *DeclAsWritten = this;
2145  if (auto *Pattern = getTemplateInstantiationPattern())
2146  DeclAsWritten = cast<CXXMethodDecl>(Pattern);
2147  return !(DeclAsWritten->isDeleted() ||
2148  DeclAsWritten->getCanonicalDecl()->isDefaulted());
2149  }
2150 
2151  void addOverriddenMethod(const CXXMethodDecl *MD);
2152 
2153  using method_iterator = const CXXMethodDecl *const *;
2154 
2155  method_iterator begin_overridden_methods() const;
2156  method_iterator end_overridden_methods() const;
2157  unsigned size_overridden_methods() const;
2158 
2160 
2161  overridden_method_range overridden_methods() const;
2162 
2163  /// Returns the parent of this method declaration, which
2164  /// is the class in which this method is defined.
2165  const CXXRecordDecl *getParent() const {
2166  return cast<CXXRecordDecl>(FunctionDecl::getParent());
2167  }
2168 
2169  /// Returns the parent of this method declaration, which
2170  /// is the class in which this method is defined.
2172  return const_cast<CXXRecordDecl *>(
2173  cast<CXXRecordDecl>(FunctionDecl::getParent()));
2174  }
2175 
2176  /// Returns the type of the \c this pointer.
2177  ///
2178  /// Should only be called for instance (i.e., non-static) methods. Note
2179  /// that for the call operator of a lambda closure type, this returns the
2180  /// desugared 'this' type (a pointer to the closure type), not the captured
2181  /// 'this' type.
2182  QualType getThisType(ASTContext &C) const;
2183 
2184  unsigned getTypeQualifiers() const {
2185  return getType()->getAs<FunctionProtoType>()->getTypeQuals();
2186  }
2187 
2188  /// Retrieve the ref-qualifier associated with this method.
2189  ///
2190  /// In the following example, \c f() has an lvalue ref-qualifier, \c g()
2191  /// has an rvalue ref-qualifier, and \c h() has no ref-qualifier.
2192  /// @code
2193  /// struct X {
2194  /// void f() &;
2195  /// void g() &&;
2196  /// void h();
2197  /// };
2198  /// @endcode
2200  return getType()->getAs<FunctionProtoType>()->getRefQualifier();
2201  }
2202 
2203  bool hasInlineBody() const;
2204 
2205  /// Determine whether this is a lambda closure type's static member
2206  /// function that is used for the result of the lambda's conversion to
2207  /// function pointer (for a lambda with no captures).
2208  ///
2209  /// The function itself, if used, will have a placeholder body that will be
2210  /// supplied by IR generation to either forward to the function call operator
2211  /// or clone the function call operator.
2212  bool isLambdaStaticInvoker() const;
2213 
2214  /// Find the method in \p RD that corresponds to this one.
2215  ///
2216  /// Find if \p RD or one of the classes it inherits from override this method.
2217  /// If so, return it. \p RD is assumed to be a subclass of the class defining
2218  /// this method (or be the class itself), unless \p MayBeBase is set to true.
2219  CXXMethodDecl *
2220  getCorrespondingMethodInClass(const CXXRecordDecl *RD,
2221  bool MayBeBase = false);
2222 
2223  const CXXMethodDecl *
2225  bool MayBeBase = false) const {
2226  return const_cast<CXXMethodDecl *>(this)
2227  ->getCorrespondingMethodInClass(RD, MayBeBase);
2228  }
2229 
2230  // Implement isa/cast/dyncast/etc.
2231  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2232  static bool classofKind(Kind K) {
2233  return K >= firstCXXMethod && K <= lastCXXMethod;
2234  }
2235 };
2236 
2237 /// Represents a C++ base or member initializer.
2238 ///
2239 /// This is part of a constructor initializer that
2240 /// initializes one non-static member variable or one base class. For
2241 /// example, in the following, both 'A(a)' and 'f(3.14159)' are member
2242 /// initializers:
2243 ///
2244 /// \code
2245 /// class A { };
2246 /// class B : public A {
2247 /// float f;
2248 /// public:
2249 /// B(A& a) : A(a), f(3.14159) { }
2250 /// };
2251 /// \endcode
2252 class CXXCtorInitializer final {
2253  /// Either the base class name/delegating constructor type (stored as
2254  /// a TypeSourceInfo*), an normal field (FieldDecl), or an anonymous field
2255  /// (IndirectFieldDecl*) being initialized.
2256  llvm::PointerUnion3<TypeSourceInfo *, FieldDecl *, IndirectFieldDecl *>
2257  Initializee;
2258 
2259  /// The source location for the field name or, for a base initializer
2260  /// pack expansion, the location of the ellipsis.
2261  ///
2262  /// In the case of a delegating
2263  /// constructor, it will still include the type's source location as the
2264  /// Initializee points to the CXXConstructorDecl (to allow loop detection).
2265  SourceLocation MemberOrEllipsisLocation;
2266 
2267  /// The argument used to initialize the base or member, which may
2268  /// end up constructing an object (when multiple arguments are involved).
2269  Stmt *Init;
2270 
2271  /// Location of the left paren of the ctor-initializer.
2272  SourceLocation LParenLoc;
2273 
2274  /// Location of the right paren of the ctor-initializer.
2275  SourceLocation RParenLoc;
2276 
2277  /// If the initializee is a type, whether that type makes this
2278  /// a delegating initialization.
2279  unsigned IsDelegating : 1;
2280 
2281  /// If the initializer is a base initializer, this keeps track
2282  /// of whether the base is virtual or not.
2283  unsigned IsVirtual : 1;
2284 
2285  /// Whether or not the initializer is explicitly written
2286  /// in the sources.
2287  unsigned IsWritten : 1;
2288 
2289  /// If IsWritten is true, then this number keeps track of the textual order
2290  /// of this initializer in the original sources, counting from 0.
2291  unsigned SourceOrder : 13;
2292 
2293 public:
2294  /// Creates a new base-class initializer.
2295  explicit
2296  CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, bool IsVirtual,
2297  SourceLocation L, Expr *Init, SourceLocation R,
2298  SourceLocation EllipsisLoc);
2299 
2300  /// Creates a new member initializer.
2301  explicit
2302  CXXCtorInitializer(ASTContext &Context, FieldDecl *Member,
2303  SourceLocation MemberLoc, SourceLocation L, Expr *Init,
2304  SourceLocation R);
2305 
2306  /// Creates a new anonymous field initializer.
2307  explicit
2309  SourceLocation MemberLoc, SourceLocation L, Expr *Init,
2310  SourceLocation R);
2311 
2312  /// Creates a new delegating initializer.
2313  explicit
2314  CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo,
2315  SourceLocation L, Expr *Init, SourceLocation R);
2316 
2317  /// Determine whether this initializer is initializing a base class.
2318  bool isBaseInitializer() const {
2319  return Initializee.is<TypeSourceInfo*>() && !IsDelegating;
2320  }
2321 
2322  /// Determine whether this initializer is initializing a non-static
2323  /// data member.
2324  bool isMemberInitializer() const { return Initializee.is<FieldDecl*>(); }
2325 
2326  bool isAnyMemberInitializer() const {
2327  return isMemberInitializer() || isIndirectMemberInitializer();
2328  }
2329 
2331  return Initializee.is<IndirectFieldDecl*>();
2332  }
2333 
2334  /// Determine whether this initializer is an implicit initializer
2335  /// generated for a field with an initializer defined on the member
2336  /// declaration.
2337  ///
2338  /// In-class member initializers (also known as "non-static data member
2339  /// initializations", NSDMIs) were introduced in C++11.
2341  return Init->getStmtClass() == Stmt::CXXDefaultInitExprClass;
2342  }
2343 
2344  /// Determine whether this initializer is creating a delegating
2345  /// constructor.
2347  return Initializee.is<TypeSourceInfo*>() && IsDelegating;
2348  }
2349 
2350  /// Determine whether this initializer is a pack expansion.
2351  bool isPackExpansion() const {
2352  return isBaseInitializer() && MemberOrEllipsisLocation.isValid();
2353  }
2354 
2355  // For a pack expansion, returns the location of the ellipsis.
2357  assert(isPackExpansion() && "Initializer is not a pack expansion");
2358  return MemberOrEllipsisLocation;
2359  }
2360 
2361  /// If this is a base class initializer, returns the type of the
2362  /// base class with location information. Otherwise, returns an NULL
2363  /// type location.
2364  TypeLoc getBaseClassLoc() const;
2365 
2366  /// If this is a base class initializer, returns the type of the base class.
2367  /// Otherwise, returns null.
2368  const Type *getBaseClass() const;
2369 
2370  /// Returns whether the base is virtual or not.
2371  bool isBaseVirtual() const {
2372  assert(isBaseInitializer() && "Must call this on base initializer!");
2373 
2374  return IsVirtual;
2375  }
2376 
2377  /// Returns the declarator information for a base class or delegating
2378  /// initializer.
2380  return Initializee.dyn_cast<TypeSourceInfo *>();
2381  }
2382 
2383  /// If this is a member initializer, returns the declaration of the
2384  /// non-static data member being initialized. Otherwise, returns null.
2386  if (isMemberInitializer())
2387  return Initializee.get<FieldDecl*>();
2388  return nullptr;
2389  }
2390 
2392  if (isMemberInitializer())
2393  return Initializee.get<FieldDecl*>();
2394  if (isIndirectMemberInitializer())
2395  return Initializee.get<IndirectFieldDecl*>()->getAnonField();
2396  return nullptr;
2397  }
2398 
2400  if (isIndirectMemberInitializer())
2401  return Initializee.get<IndirectFieldDecl*>();
2402  return nullptr;
2403  }
2404 
2406  return MemberOrEllipsisLocation;
2407  }
2408 
2409  /// Determine the source location of the initializer.
2410  SourceLocation getSourceLocation() const;
2411 
2412  /// Determine the source range covering the entire initializer.
2413  SourceRange getSourceRange() const LLVM_READONLY;
2414 
2415  /// Determine whether this initializer is explicitly written
2416  /// in the source code.
2417  bool isWritten() const { return IsWritten; }
2418 
2419  /// Return the source position of the initializer, counting from 0.
2420  /// If the initializer was implicit, -1 is returned.
2421  int getSourceOrder() const {
2422  return IsWritten ? static_cast<int>(SourceOrder) : -1;
2423  }
2424 
2425  /// Set the source order of this initializer.
2426  ///
2427  /// This can only be called once for each initializer; it cannot be called
2428  /// on an initializer having a positive number of (implicit) array indices.
2429  ///
2430  /// This assumes that the initializer was written in the source code, and
2431  /// ensures that isWritten() returns true.
2432  void setSourceOrder(int Pos) {
2433  assert(!IsWritten &&
2434  "setSourceOrder() used on implicit initializer");
2435  assert(SourceOrder == 0 &&
2436  "calling twice setSourceOrder() on the same initializer");
2437  assert(Pos >= 0 &&
2438  "setSourceOrder() used to make an initializer implicit");
2439  IsWritten = true;
2440  SourceOrder = static_cast<unsigned>(Pos);
2441  }
2442 
2443  SourceLocation getLParenLoc() const { return LParenLoc; }
2444  SourceLocation getRParenLoc() const { return RParenLoc; }
2445 
2446  /// Get the initializer.
2447  Expr *getInit() const { return static_cast<Expr *>(Init); }
2448 };
2449 
2450 /// Description of a constructor that was inherited from a base class.
2452  ConstructorUsingShadowDecl *Shadow = nullptr;
2453  CXXConstructorDecl *BaseCtor = nullptr;
2454 
2455 public:
2456  InheritedConstructor() = default;
2458  CXXConstructorDecl *BaseCtor)
2459  : Shadow(Shadow), BaseCtor(BaseCtor) {}
2460 
2461  explicit operator bool() const { return Shadow; }
2462 
2463  ConstructorUsingShadowDecl *getShadowDecl() const { return Shadow; }
2464  CXXConstructorDecl *getConstructor() const { return BaseCtor; }
2465 };
2466 
2467 /// Represents a C++ constructor within a class.
2468 ///
2469 /// For example:
2470 ///
2471 /// \code
2472 /// class X {
2473 /// public:
2474 /// explicit X(int); // represented by a CXXConstructorDecl.
2475 /// };
2476 /// \endcode
2478  : public CXXMethodDecl,
2479  private llvm::TrailingObjects<CXXConstructorDecl, InheritedConstructor> {
2480  /// \name Support for base and member initializers.
2481  /// \{
2482  /// The arguments used to initialize the base or member.
2483  LazyCXXCtorInitializersPtr CtorInitializers;
2484  unsigned NumCtorInitializers : 31;
2485  /// \}
2486 
2487  /// Whether this constructor declaration is an implicitly-declared
2488  /// inheriting constructor.
2489  unsigned IsInheritingConstructor : 1;
2490 
2492  const DeclarationNameInfo &NameInfo,
2493  QualType T, TypeSourceInfo *TInfo,
2494  bool isExplicitSpecified, bool isInline,
2495  bool isImplicitlyDeclared, bool isConstexpr,
2496  InheritedConstructor Inherited)
2497  : CXXMethodDecl(CXXConstructor, C, RD, StartLoc, NameInfo, T, TInfo,
2498  SC_None, isInline, isConstexpr, SourceLocation()),
2499  NumCtorInitializers(0), IsInheritingConstructor((bool)Inherited) {
2500  setImplicit(isImplicitlyDeclared);
2501  if (Inherited)
2502  *getTrailingObjects<InheritedConstructor>() = Inherited;
2503  IsExplicitSpecified = isExplicitSpecified;
2504  }
2505 
2506  void anchor() override;
2507 
2508 public:
2509  friend class ASTDeclReader;
2510  friend class ASTDeclWriter;
2512 
2513  static CXXConstructorDecl *CreateDeserialized(ASTContext &C, unsigned ID,
2514  bool InheritsConstructor);
2515  static CXXConstructorDecl *
2516  Create(ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc,
2517  const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo,
2518  bool isExplicit, bool isInline, bool isImplicitlyDeclared,
2519  bool isConstexpr,
2521 
2522  /// Iterates through the member/base initializer list.
2524 
2525  /// Iterates through the member/base initializer list.
2527 
2528  using init_range = llvm::iterator_range<init_iterator>;
2529  using init_const_range = llvm::iterator_range<init_const_iterator>;
2530 
2531  init_range inits() { return init_range(init_begin(), init_end()); }
2533  return init_const_range(init_begin(), init_end());
2534  }
2535 
2536  /// Retrieve an iterator to the first initializer.
2538  const auto *ConstThis = this;
2539  return const_cast<init_iterator>(ConstThis->init_begin());
2540  }
2541 
2542  /// Retrieve an iterator to the first initializer.
2543  init_const_iterator init_begin() const;
2544 
2545  /// Retrieve an iterator past the last initializer.
2547  return init_begin() + NumCtorInitializers;
2548  }
2549 
2550  /// Retrieve an iterator past the last initializer.
2552  return init_begin() + NumCtorInitializers;
2553  }
2554 
2555  using init_reverse_iterator = std::reverse_iterator<init_iterator>;
2557  std::reverse_iterator<init_const_iterator>;
2558 
2560  return init_reverse_iterator(init_end());
2561  }
2563  return init_const_reverse_iterator(init_end());
2564  }
2565 
2567  return init_reverse_iterator(init_begin());
2568  }
2570  return init_const_reverse_iterator(init_begin());
2571  }
2572 
2573  /// Determine the number of arguments used to initialize the member
2574  /// or base.
2575  unsigned getNumCtorInitializers() const {
2576  return NumCtorInitializers;
2577  }
2578 
2579  void setNumCtorInitializers(unsigned numCtorInitializers) {
2580  NumCtorInitializers = numCtorInitializers;
2581  }
2582 
2584  CtorInitializers = Initializers;
2585  }
2586 
2587  /// Whether this function is marked as explicit explicitly.
2588  bool isExplicitSpecified() const { return IsExplicitSpecified; }
2589 
2590  /// Whether this function is explicit.
2591  bool isExplicit() const {
2592  return getCanonicalDecl()->isExplicitSpecified();
2593  }
2594 
2595  /// Determine whether this constructor is a delegating constructor.
2597  return (getNumCtorInitializers() == 1) &&
2598  init_begin()[0]->isDelegatingInitializer();
2599  }
2600 
2601  /// When this constructor delegates to another, retrieve the target.
2602  CXXConstructorDecl *getTargetConstructor() const;
2603 
2604  /// Whether this constructor is a default
2605  /// constructor (C++ [class.ctor]p5), which can be used to
2606  /// default-initialize a class of this type.
2607  bool isDefaultConstructor() const;
2608 
2609  /// Whether this constructor is a copy constructor (C++ [class.copy]p2,
2610  /// which can be used to copy the class.
2611  ///
2612  /// \p TypeQuals will be set to the qualifiers on the
2613  /// argument type. For example, \p TypeQuals would be set to \c
2614  /// Qualifiers::Const for the following copy constructor:
2615  ///
2616  /// \code
2617  /// class X {
2618  /// public:
2619  /// X(const X&);
2620  /// };
2621  /// \endcode
2622  bool isCopyConstructor(unsigned &TypeQuals) const;
2623 
2624  /// Whether this constructor is a copy
2625  /// constructor (C++ [class.copy]p2, which can be used to copy the
2626  /// class.
2627  bool isCopyConstructor() const {
2628  unsigned TypeQuals = 0;
2629  return isCopyConstructor(TypeQuals);
2630  }
2631 
2632  /// Determine whether this constructor is a move constructor
2633  /// (C++11 [class.copy]p3), which can be used to move values of the class.
2634  ///
2635  /// \param TypeQuals If this constructor is a move constructor, will be set
2636  /// to the type qualifiers on the referent of the first parameter's type.
2637  bool isMoveConstructor(unsigned &TypeQuals) const;
2638 
2639  /// Determine whether this constructor is a move constructor
2640  /// (C++11 [class.copy]p3), which can be used to move values of the class.
2641  bool isMoveConstructor() const {
2642  unsigned TypeQuals = 0;
2643  return isMoveConstructor(TypeQuals);
2644  }
2645 
2646  /// Determine whether this is a copy or move constructor.
2647  ///
2648  /// \param TypeQuals Will be set to the type qualifiers on the reference
2649  /// parameter, if in fact this is a copy or move constructor.
2650  bool isCopyOrMoveConstructor(unsigned &TypeQuals) const;
2651 
2652  /// Determine whether this a copy or move constructor.
2654  unsigned Quals;
2655  return isCopyOrMoveConstructor(Quals);
2656  }
2657 
2658  /// Whether this constructor is a
2659  /// converting constructor (C++ [class.conv.ctor]), which can be
2660  /// used for user-defined conversions.
2661  bool isConvertingConstructor(bool AllowExplicit) const;
2662 
2663  /// Determine whether this is a member template specialization that
2664  /// would copy the object to itself. Such constructors are never used to copy
2665  /// an object.
2666  bool isSpecializationCopyingObject() const;
2667 
2668  /// Determine whether this is an implicit constructor synthesized to
2669  /// model a call to a constructor inherited from a base class.
2670  bool isInheritingConstructor() const { return IsInheritingConstructor; }
2671 
2672  /// Get the constructor that this inheriting constructor is based on.
2674  return IsInheritingConstructor ? *getTrailingObjects<InheritedConstructor>()
2676  }
2677 
2679  return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl());
2680  }
2682  return const_cast<CXXConstructorDecl*>(this)->getCanonicalDecl();
2683  }
2684 
2685  // Implement isa/cast/dyncast/etc.
2686  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2687  static bool classofKind(Kind K) { return K == CXXConstructor; }
2688 };
2689 
2690 /// Represents a C++ destructor within a class.
2691 ///
2692 /// For example:
2693 ///
2694 /// \code
2695 /// class X {
2696 /// public:
2697 /// ~X(); // represented by a CXXDestructorDecl.
2698 /// };
2699 /// \endcode
2701  friend class ASTDeclReader;
2702  friend class ASTDeclWriter;
2703 
2704  // FIXME: Don't allocate storage for these except in the first declaration
2705  // of a virtual destructor.
2706  FunctionDecl *OperatorDelete = nullptr;
2707  Expr *OperatorDeleteThisArg = nullptr;
2708 
2710  const DeclarationNameInfo &NameInfo,
2711  QualType T, TypeSourceInfo *TInfo,
2712  bool isInline, bool isImplicitlyDeclared)
2713  : CXXMethodDecl(CXXDestructor, C, RD, StartLoc, NameInfo, T, TInfo,
2714  SC_None, isInline, /*isConstexpr=*/false, SourceLocation())
2715  {
2716  setImplicit(isImplicitlyDeclared);
2717  }
2718 
2719  void anchor() override;
2720 
2721 public:
2723  SourceLocation StartLoc,
2724  const DeclarationNameInfo &NameInfo,
2725  QualType T, TypeSourceInfo* TInfo,
2726  bool isInline,
2727  bool isImplicitlyDeclared);
2728  static CXXDestructorDecl *CreateDeserialized(ASTContext & C, unsigned ID);
2729 
2730  void setOperatorDelete(FunctionDecl *OD, Expr *ThisArg);
2731 
2733  return getCanonicalDecl()->OperatorDelete;
2734  }
2735 
2737  return getCanonicalDecl()->OperatorDeleteThisArg;
2738  }
2739 
2741  return cast<CXXDestructorDecl>(FunctionDecl::getCanonicalDecl());
2742  }
2744  return const_cast<CXXDestructorDecl*>(this)->getCanonicalDecl();
2745  }
2746 
2747  // Implement isa/cast/dyncast/etc.
2748  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2749  static bool classofKind(Kind K) { return K == CXXDestructor; }
2750 };
2751 
2752 /// Represents a C++ conversion function within a class.
2753 ///
2754 /// For example:
2755 ///
2756 /// \code
2757 /// class X {
2758 /// public:
2759 /// operator bool();
2760 /// };
2761 /// \endcode
2764  const DeclarationNameInfo &NameInfo, QualType T,
2765  TypeSourceInfo *TInfo, bool isInline,
2766  bool isExplicitSpecified, bool isConstexpr,
2767  SourceLocation EndLocation)
2768  : CXXMethodDecl(CXXConversion, C, RD, StartLoc, NameInfo, T, TInfo,
2769  SC_None, isInline, isConstexpr, EndLocation) {
2770  IsExplicitSpecified = isExplicitSpecified;
2771  }
2772 
2773  void anchor() override;
2774 
2775 public:
2776  friend class ASTDeclReader;
2777  friend class ASTDeclWriter;
2778 
2780  SourceLocation StartLoc,
2781  const DeclarationNameInfo &NameInfo,
2782  QualType T, TypeSourceInfo *TInfo,
2783  bool isInline, bool isExplicit,
2784  bool isConstexpr,
2785  SourceLocation EndLocation);
2786  static CXXConversionDecl *CreateDeserialized(ASTContext &C, unsigned ID);
2787 
2788  /// Whether this function is marked as explicit explicitly.
2789  bool isExplicitSpecified() const { return IsExplicitSpecified; }
2790 
2791  /// Whether this function is explicit.
2792  bool isExplicit() const {
2793  return getCanonicalDecl()->isExplicitSpecified();
2794  }
2795 
2796  /// Returns the type that this conversion function is converting to.
2798  return getType()->getAs<FunctionType>()->getReturnType();
2799  }
2800 
2801  /// Determine whether this conversion function is a conversion from
2802  /// a lambda closure type to a block pointer.
2803  bool isLambdaToBlockPointerConversion() const;
2804 
2806  return cast<CXXConversionDecl>(FunctionDecl::getCanonicalDecl());
2807  }
2809  return const_cast<CXXConversionDecl*>(this)->getCanonicalDecl();
2810  }
2811 
2812  // Implement isa/cast/dyncast/etc.
2813  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2814  static bool classofKind(Kind K) { return K == CXXConversion; }
2815 };
2816 
2817 /// Represents a linkage specification.
2818 ///
2819 /// For example:
2820 /// \code
2821 /// extern "C" void foo();
2822 /// \endcode
2823 class LinkageSpecDecl : public Decl, public DeclContext {
2824  virtual void anchor();
2825 
2826 public:
2827  /// Represents the language in a linkage specification.
2828  ///
2829  /// The values are part of the serialization ABI for
2830  /// ASTs and cannot be changed without altering that ABI. To help
2831  /// ensure a stable ABI for this, we choose the DW_LANG_ encodings
2832  /// from the dwarf standard.
2834  lang_c = /* DW_LANG_C */ 0x0002,
2835  lang_cxx = /* DW_LANG_C_plus_plus */ 0x0004
2836  };
2837 
2838 private:
2839  /// The language for this linkage specification.
2840  unsigned Language : 3;
2841 
2842  /// True if this linkage spec has braces.
2843  ///
2844  /// This is needed so that hasBraces() returns the correct result while the
2845  /// linkage spec body is being parsed. Once RBraceLoc has been set this is
2846  /// not used, so it doesn't need to be serialized.
2847  unsigned HasBraces : 1;
2848 
2849  /// The source location for the extern keyword.
2850  SourceLocation ExternLoc;
2851 
2852  /// The source location for the right brace (if valid).
2853  SourceLocation RBraceLoc;
2854 
2856  SourceLocation LangLoc, LanguageIDs lang, bool HasBraces)
2857  : Decl(LinkageSpec, DC, LangLoc), DeclContext(LinkageSpec),
2858  Language(lang), HasBraces(HasBraces), ExternLoc(ExternLoc),
2859  RBraceLoc(SourceLocation()) {}
2860 
2861 public:
2862  static LinkageSpecDecl *Create(ASTContext &C, DeclContext *DC,
2863  SourceLocation ExternLoc,
2864  SourceLocation LangLoc, LanguageIDs Lang,
2865  bool HasBraces);
2866  static LinkageSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID);
2867 
2868  /// Return the language specified by this linkage specification.
2869  LanguageIDs getLanguage() const { return LanguageIDs(Language); }
2870 
2871  /// Set the language specified by this linkage specification.
2872  void setLanguage(LanguageIDs L) { Language = L; }
2873 
2874  /// Determines whether this linkage specification had braces in
2875  /// its syntactic form.
2876  bool hasBraces() const {
2877  assert(!RBraceLoc.isValid() || HasBraces);
2878  return HasBraces;
2879  }
2880 
2881  SourceLocation getExternLoc() const { return ExternLoc; }
2882  SourceLocation getRBraceLoc() const { return RBraceLoc; }
2883  void setExternLoc(SourceLocation L) { ExternLoc = L; }
2885  RBraceLoc = L;
2886  HasBraces = RBraceLoc.isValid();
2887  }
2888 
2889  SourceLocation getLocEnd() const LLVM_READONLY { return getEndLoc(); }
2890  SourceLocation getEndLoc() const LLVM_READONLY {
2891  if (hasBraces())
2892  return getRBraceLoc();
2893  // No braces: get the end location of the (only) declaration in context
2894  // (if present).
2895  return decls_empty() ? getLocation() : decls_begin()->getLocEnd();
2896  }
2897 
2898  SourceRange getSourceRange() const override LLVM_READONLY {
2899  return SourceRange(ExternLoc, getLocEnd());
2900  }
2901 
2902  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
2903  static bool classofKind(Kind K) { return K == LinkageSpec; }
2904 
2906  return static_cast<DeclContext *>(const_cast<LinkageSpecDecl*>(D));
2907  }
2908 
2910  return static_cast<LinkageSpecDecl *>(const_cast<DeclContext*>(DC));
2911  }
2912 };
2913 
2914 /// Represents C++ using-directive.
2915 ///
2916 /// For example:
2917 /// \code
2918 /// using namespace std;
2919 /// \endcode
2920 ///
2921 /// \note UsingDirectiveDecl should be Decl not NamedDecl, but we provide
2922 /// artificial names for all using-directives in order to store
2923 /// them in DeclContext effectively.
2925  /// The location of the \c using keyword.
2926  SourceLocation UsingLoc;
2927 
2928  /// The location of the \c namespace keyword.
2929  SourceLocation NamespaceLoc;
2930 
2931  /// The nested-name-specifier that precedes the namespace.
2932  NestedNameSpecifierLoc QualifierLoc;
2933 
2934  /// The namespace nominated by this using-directive.
2935  NamedDecl *NominatedNamespace;
2936 
2937  /// Enclosing context containing both using-directive and nominated
2938  /// namespace.
2939  DeclContext *CommonAncestor;
2940 
2942  SourceLocation NamespcLoc,
2943  NestedNameSpecifierLoc QualifierLoc,
2944  SourceLocation IdentLoc,
2945  NamedDecl *Nominated,
2946  DeclContext *CommonAncestor)
2947  : NamedDecl(UsingDirective, DC, IdentLoc, getName()), UsingLoc(UsingLoc),
2948  NamespaceLoc(NamespcLoc), QualifierLoc(QualifierLoc),
2949  NominatedNamespace(Nominated), CommonAncestor(CommonAncestor) {}
2950 
2951  /// Returns special DeclarationName used by using-directives.
2952  ///
2953  /// This is only used by DeclContext for storing UsingDirectiveDecls in
2954  /// its lookup structure.
2955  static DeclarationName getName() {
2957  }
2958 
2959  void anchor() override;
2960 
2961 public:
2962  friend class ASTDeclReader;
2963 
2964  // Friend for getUsingDirectiveName.
2965  friend class DeclContext;
2966 
2967  /// Retrieve the nested-name-specifier that qualifies the
2968  /// name of the namespace, with source-location information.
2969  NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; }
2970 
2971  /// Retrieve the nested-name-specifier that qualifies the
2972  /// name of the namespace.
2974  return QualifierLoc.getNestedNameSpecifier();
2975  }
2976 
2977  NamedDecl *getNominatedNamespaceAsWritten() { return NominatedNamespace; }
2979  return NominatedNamespace;
2980  }
2981 
2982  /// Returns the namespace nominated by this using-directive.
2983  NamespaceDecl *getNominatedNamespace();
2984 
2986  return const_cast<UsingDirectiveDecl*>(this)->getNominatedNamespace();
2987  }
2988 
2989  /// Returns the common ancestor context of this using-directive and
2990  /// its nominated namespace.
2991  DeclContext *getCommonAncestor() { return CommonAncestor; }
2992  const DeclContext *getCommonAncestor() const { return CommonAncestor; }
2993 
2994  /// Return the location of the \c using keyword.
2995  SourceLocation getUsingLoc() const { return UsingLoc; }
2996 
2997  // FIXME: Could omit 'Key' in name.
2998  /// Returns the location of the \c namespace keyword.
2999  SourceLocation getNamespaceKeyLocation() const { return NamespaceLoc; }
3000 
3001  /// Returns the location of this using declaration's identifier.
3002  SourceLocation getIdentLocation() const { return getLocation(); }
3003 
3005  SourceLocation UsingLoc,
3006  SourceLocation NamespaceLoc,
3007  NestedNameSpecifierLoc QualifierLoc,
3008  SourceLocation IdentLoc,
3009  NamedDecl *Nominated,
3010  DeclContext *CommonAncestor);
3011  static UsingDirectiveDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3012 
3013  SourceRange getSourceRange() const override LLVM_READONLY {
3014  return SourceRange(UsingLoc, getLocation());
3015  }
3016 
3017  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3018  static bool classofKind(Kind K) { return K == UsingDirective; }
3019 };
3020 
3021 /// Represents a C++ namespace alias.
3022 ///
3023 /// For example:
3024 ///
3025 /// \code
3026 /// namespace Foo = Bar;
3027 /// \endcode
3029  public Redeclarable<NamespaceAliasDecl> {
3030  friend class ASTDeclReader;
3031 
3032  /// The location of the \c namespace keyword.
3033  SourceLocation NamespaceLoc;
3034 
3035  /// The location of the namespace's identifier.
3036  ///
3037  /// This is accessed by TargetNameLoc.
3038  SourceLocation IdentLoc;
3039 
3040  /// The nested-name-specifier that precedes the namespace.
3041  NestedNameSpecifierLoc QualifierLoc;
3042 
3043  /// The Decl that this alias points to, either a NamespaceDecl or
3044  /// a NamespaceAliasDecl.
3045  NamedDecl *Namespace;
3046 
3048  SourceLocation NamespaceLoc, SourceLocation AliasLoc,
3049  IdentifierInfo *Alias, NestedNameSpecifierLoc QualifierLoc,
3050  SourceLocation IdentLoc, NamedDecl *Namespace)
3051  : NamedDecl(NamespaceAlias, DC, AliasLoc, Alias), redeclarable_base(C),
3052  NamespaceLoc(NamespaceLoc), IdentLoc(IdentLoc),
3053  QualifierLoc(QualifierLoc), Namespace(Namespace) {}
3054 
3055  void anchor() override;
3056 
3058 
3059  NamespaceAliasDecl *getNextRedeclarationImpl() override;
3060  NamespaceAliasDecl *getPreviousDeclImpl() override;
3061  NamespaceAliasDecl *getMostRecentDeclImpl() override;
3062 
3063 public:
3065  SourceLocation NamespaceLoc,
3066  SourceLocation AliasLoc,
3067  IdentifierInfo *Alias,
3068  NestedNameSpecifierLoc QualifierLoc,
3069  SourceLocation IdentLoc,
3070  NamedDecl *Namespace);
3071 
3072  static NamespaceAliasDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3073 
3075  using redecl_iterator = redeclarable_base::redecl_iterator;
3076 
3077  using redeclarable_base::redecls_begin;
3078  using redeclarable_base::redecls_end;
3079  using redeclarable_base::redecls;
3080  using redeclarable_base::getPreviousDecl;
3081  using redeclarable_base::getMostRecentDecl;
3082 
3084  return getFirstDecl();
3085  }
3087  return getFirstDecl();
3088  }
3089 
3090  /// Retrieve the nested-name-specifier that qualifies the
3091  /// name of the namespace, with source-location information.
3092  NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; }
3093 
3094  /// Retrieve the nested-name-specifier that qualifies the
3095  /// name of the namespace.
3097  return QualifierLoc.getNestedNameSpecifier();
3098  }
3099 
3100  /// Retrieve the namespace declaration aliased by this directive.
3102  if (auto *AD = dyn_cast<NamespaceAliasDecl>(Namespace))
3103  return AD->getNamespace();
3104 
3105  return cast<NamespaceDecl>(Namespace);
3106  }
3107 
3108  const NamespaceDecl *getNamespace() const {
3109  return const_cast<NamespaceAliasDecl *>(this)->getNamespace();
3110  }
3111 
3112  /// Returns the location of the alias name, i.e. 'foo' in
3113  /// "namespace foo = ns::bar;".
3114  SourceLocation getAliasLoc() const { return getLocation(); }
3115 
3116  /// Returns the location of the \c namespace keyword.
3117  SourceLocation getNamespaceLoc() const { return NamespaceLoc; }
3118 
3119  /// Returns the location of the identifier in the named namespace.
3120  SourceLocation getTargetNameLoc() const { return IdentLoc; }
3121 
3122  /// Retrieve the namespace that this alias refers to, which
3123  /// may either be a NamespaceDecl or a NamespaceAliasDecl.
3124  NamedDecl *getAliasedNamespace() const { return Namespace; }
3125 
3126  SourceRange getSourceRange() const override LLVM_READONLY {
3127  return SourceRange(NamespaceLoc, IdentLoc);
3128  }
3129 
3130  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3131  static bool classofKind(Kind K) { return K == NamespaceAlias; }
3132 };
3133 
3134 /// Represents a shadow declaration introduced into a scope by a
3135 /// (resolved) using declaration.
3136 ///
3137 /// For example,
3138 /// \code
3139 /// namespace A {
3140 /// void foo();
3141 /// }
3142 /// namespace B {
3143 /// using A::foo; // <- a UsingDecl
3144 /// // Also creates a UsingShadowDecl for A::foo() in B
3145 /// }
3146 /// \endcode
3147 class UsingShadowDecl : public NamedDecl, public Redeclarable<UsingShadowDecl> {
3148  friend class UsingDecl;
3149 
3150  /// The referenced declaration.
3151  NamedDecl *Underlying = nullptr;
3152 
3153  /// The using declaration which introduced this decl or the next using
3154  /// shadow declaration contained in the aforementioned using declaration.
3155  NamedDecl *UsingOrNextShadow = nullptr;
3156 
3157  void anchor() override;
3158 
3160 
3161  UsingShadowDecl *getNextRedeclarationImpl() override {
3162  return getNextRedeclaration();
3163  }
3164 
3165  UsingShadowDecl *getPreviousDeclImpl() override {
3166  return getPreviousDecl();
3167  }
3168 
3169  UsingShadowDecl *getMostRecentDeclImpl() override {
3170  return getMostRecentDecl();
3171  }
3172 
3173 protected:
3175  UsingDecl *Using, NamedDecl *Target);
3177 
3178 public:
3179  friend class ASTDeclReader;
3180  friend class ASTDeclWriter;
3181 
3183  SourceLocation Loc, UsingDecl *Using,
3184  NamedDecl *Target) {
3185  return new (C, DC) UsingShadowDecl(UsingShadow, C, DC, Loc, Using, Target);
3186  }
3187 
3188  static UsingShadowDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3189 
3191  using redecl_iterator = redeclarable_base::redecl_iterator;
3192 
3193  using redeclarable_base::redecls_begin;
3194  using redeclarable_base::redecls_end;
3195  using redeclarable_base::redecls;
3196  using redeclarable_base::getPreviousDecl;
3197  using redeclarable_base::getMostRecentDecl;
3198  using redeclarable_base::isFirstDecl;
3199 
3201  return getFirstDecl();
3202  }
3204  return getFirstDecl();
3205  }
3206 
3207  /// Gets the underlying declaration which has been brought into the
3208  /// local scope.
3209  NamedDecl *getTargetDecl() const { return Underlying; }
3210 
3211  /// Sets the underlying declaration which has been brought into the
3212  /// local scope.
3214  assert(ND && "Target decl is null!");
3215  Underlying = ND;
3216  // A UsingShadowDecl is never a friend or local extern declaration, even
3217  // if it is a shadow declaration for one.
3219  ND->getIdentifierNamespace() &
3220  ~(IDNS_OrdinaryFriend | IDNS_TagFriend | IDNS_LocalExtern);
3221  }
3222 
3223  /// Gets the using declaration to which this declaration is tied.
3224  UsingDecl *getUsingDecl() const;
3225 
3226  /// The next using shadow declaration contained in the shadow decl
3227  /// chain of the using declaration which introduced this decl.
3229  return dyn_cast_or_null<UsingShadowDecl>(UsingOrNextShadow);
3230  }
3231 
3232  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3233  static bool classofKind(Kind K) {
3234  return K == Decl::UsingShadow || K == Decl::ConstructorUsingShadow;
3235  }
3236 };
3237 
3238 /// Represents a shadow constructor declaration introduced into a
3239 /// class by a C++11 using-declaration that names a constructor.
3240 ///
3241 /// For example:
3242 /// \code
3243 /// struct Base { Base(int); };
3244 /// struct Derived {
3245 /// using Base::Base; // creates a UsingDecl and a ConstructorUsingShadowDecl
3246 /// };
3247 /// \endcode
3249  /// If this constructor using declaration inherted the constructor
3250  /// from an indirect base class, this is the ConstructorUsingShadowDecl
3251  /// in the named direct base class from which the declaration was inherited.
3252  ConstructorUsingShadowDecl *NominatedBaseClassShadowDecl = nullptr;
3253 
3254  /// If this constructor using declaration inherted the constructor
3255  /// from an indirect base class, this is the ConstructorUsingShadowDecl
3256  /// that will be used to construct the unique direct or virtual base class
3257  /// that receives the constructor arguments.
3258  ConstructorUsingShadowDecl *ConstructedBaseClassShadowDecl = nullptr;
3259 
3260  /// \c true if the constructor ultimately named by this using shadow
3261  /// declaration is within a virtual base class subobject of the class that
3262  /// contains this declaration.
3263  unsigned IsVirtual : 1;
3264 
3266  UsingDecl *Using, NamedDecl *Target,
3267  bool TargetInVirtualBase)
3268  : UsingShadowDecl(ConstructorUsingShadow, C, DC, Loc, Using,
3269  Target->getUnderlyingDecl()),
3270  NominatedBaseClassShadowDecl(
3271  dyn_cast<ConstructorUsingShadowDecl>(Target)),
3272  ConstructedBaseClassShadowDecl(NominatedBaseClassShadowDecl),
3273  IsVirtual(TargetInVirtualBase) {
3274  // If we found a constructor that chains to a constructor for a virtual
3275  // base, we should directly call that virtual base constructor instead.
3276  // FIXME: This logic belongs in Sema.
3277  if (NominatedBaseClassShadowDecl &&
3278  NominatedBaseClassShadowDecl->constructsVirtualBase()) {
3279  ConstructedBaseClassShadowDecl =
3280  NominatedBaseClassShadowDecl->ConstructedBaseClassShadowDecl;
3281  IsVirtual = true;
3282  }
3283  }
3284 
3286  : UsingShadowDecl(ConstructorUsingShadow, C, Empty), IsVirtual(false) {}
3287 
3288  void anchor() override;
3289 
3290 public:
3291  friend class ASTDeclReader;
3292  friend class ASTDeclWriter;
3293 
3295  SourceLocation Loc,
3296  UsingDecl *Using, NamedDecl *Target,
3297  bool IsVirtual);
3298  static ConstructorUsingShadowDecl *CreateDeserialized(ASTContext &C,
3299  unsigned ID);
3300 
3301  /// Returns the parent of this using shadow declaration, which
3302  /// is the class in which this is declared.
3303  //@{
3304  const CXXRecordDecl *getParent() const {
3305  return cast<CXXRecordDecl>(getDeclContext());
3306  }
3308  return cast<CXXRecordDecl>(getDeclContext());
3309  }
3310  //@}
3311 
3312  /// Get the inheriting constructor declaration for the direct base
3313  /// class from which this using shadow declaration was inherited, if there is
3314  /// one. This can be different for each redeclaration of the same shadow decl.
3316  return NominatedBaseClassShadowDecl;
3317  }
3318 
3319  /// Get the inheriting constructor declaration for the base class
3320  /// for which we don't have an explicit initializer, if there is one.
3322  return ConstructedBaseClassShadowDecl;
3323  }
3324 
3325  /// Get the base class that was named in the using declaration. This
3326  /// can be different for each redeclaration of this same shadow decl.
3327  CXXRecordDecl *getNominatedBaseClass() const;
3328 
3329  /// Get the base class whose constructor or constructor shadow
3330  /// declaration is passed the constructor arguments.
3332  return cast<CXXRecordDecl>((ConstructedBaseClassShadowDecl
3333  ? ConstructedBaseClassShadowDecl
3334  : getTargetDecl())
3335  ->getDeclContext());
3336  }
3337 
3338  /// Returns \c true if the constructed base class is a virtual base
3339  /// class subobject of this declaration's class.
3340  bool constructsVirtualBase() const {
3341  return IsVirtual;
3342  }
3343 
3344  /// Get the constructor or constructor template in the derived class
3345  /// correspnding to this using shadow declaration, if it has been implicitly
3346  /// declared already.
3347  CXXConstructorDecl *getConstructor() const;
3348  void setConstructor(NamedDecl *Ctor);
3349 
3350  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3351  static bool classofKind(Kind K) { return K == ConstructorUsingShadow; }
3352 };
3353 
3354 /// Represents a C++ using-declaration.
3355 ///
3356 /// For example:
3357 /// \code
3358 /// using someNameSpace::someIdentifier;
3359 /// \endcode
3360 class UsingDecl : public NamedDecl, public Mergeable<UsingDecl> {
3361  /// The source location of the 'using' keyword itself.
3362  SourceLocation UsingLocation;
3363 
3364  /// The nested-name-specifier that precedes the name.
3365  NestedNameSpecifierLoc QualifierLoc;
3366 
3367  /// Provides source/type location info for the declaration name
3368  /// embedded in the ValueDecl base class.
3369  DeclarationNameLoc DNLoc;
3370 
3371  /// The first shadow declaration of the shadow decl chain associated
3372  /// with this using declaration.
3373  ///
3374  /// The bool member of the pair store whether this decl has the \c typename
3375  /// keyword.
3376  llvm::PointerIntPair<UsingShadowDecl *, 1, bool> FirstUsingShadow;
3377 
3379  NestedNameSpecifierLoc QualifierLoc,
3380  const DeclarationNameInfo &NameInfo, bool HasTypenameKeyword)
3381  : NamedDecl(Using, DC, NameInfo.getLoc(), NameInfo.getName()),
3382  UsingLocation(UL), QualifierLoc(QualifierLoc),
3383  DNLoc(NameInfo.getInfo()), FirstUsingShadow(nullptr, HasTypenameKeyword) {
3384  }
3385 
3386  void anchor() override;
3387 
3388 public:
3389  friend class ASTDeclReader;
3390  friend class ASTDeclWriter;
3391 
3392  /// Return the source location of the 'using' keyword.
3393  SourceLocation getUsingLoc() const { return UsingLocation; }
3394 
3395  /// Set the source location of the 'using' keyword.
3396  void setUsingLoc(SourceLocation L) { UsingLocation = L; }
3397 
3398  /// Retrieve the nested-name-specifier that qualifies the name,
3399  /// with source-location information.
3400  NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; }
3401 
3402  /// Retrieve the nested-name-specifier that qualifies the name.
3404  return QualifierLoc.getNestedNameSpecifier();
3405  }
3406 
3408  return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc);
3409  }
3410 
3411  /// Return true if it is a C++03 access declaration (no 'using').
3412  bool isAccessDeclaration() const { return UsingLocation.isInvalid(); }
3413 
3414  /// Return true if the using declaration has 'typename'.
3415  bool hasTypename() const { return FirstUsingShadow.getInt(); }
3416 
3417  /// Sets whether the using declaration has 'typename'.
3418  void setTypename(bool TN) { FirstUsingShadow.setInt(TN); }
3419 
3420  /// Iterates through the using shadow declarations associated with
3421  /// this using declaration.
3423  /// The current using shadow declaration.
3424  UsingShadowDecl *Current = nullptr;
3425 
3426  public:
3430  using iterator_category = std::forward_iterator_tag;
3432 
3433  shadow_iterator() = default;
3434  explicit shadow_iterator(UsingShadowDecl *C) : Current(C) {}
3435 
3436  reference operator*() const { return Current; }
3437  pointer operator->() const { return Current; }
3438 
3440  Current = Current->getNextUsingShadowDecl();
3441  return *this;
3442  }
3443 
3445  shadow_iterator tmp(*this);
3446  ++(*this);
3447  return tmp;
3448  }
3449 
3451  return x.Current == y.Current;
3452  }
3454  return x.Current != y.Current;
3455  }
3456  };
3457 
3458  using shadow_range = llvm::iterator_range<shadow_iterator>;
3459 
3461  return shadow_range(shadow_begin(), shadow_end());
3462  }
3463 
3465  return shadow_iterator(FirstUsingShadow.getPointer());
3466  }
3467 
3469 
3470  /// Return the number of shadowed declarations associated with this
3471  /// using declaration.
3472  unsigned shadow_size() const {
3473  return std::distance(shadow_begin(), shadow_end());
3474  }
3475 
3476  void addShadowDecl(UsingShadowDecl *S);
3477  void removeShadowDecl(UsingShadowDecl *S);
3478 
3479  static UsingDecl *Create(ASTContext &C, DeclContext *DC,
3480  SourceLocation UsingL,
3481  NestedNameSpecifierLoc QualifierLoc,
3482  const DeclarationNameInfo &NameInfo,
3483  bool HasTypenameKeyword);
3484 
3485  static UsingDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3486 
3487  SourceRange getSourceRange() const override LLVM_READONLY;
3488 
3489  /// Retrieves the canonical declaration of this declaration.
3490  UsingDecl *getCanonicalDecl() override { return getFirstDecl(); }
3491  const UsingDecl *getCanonicalDecl() const { return getFirstDecl(); }
3492 
3493  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3494  static bool classofKind(Kind K) { return K == Using; }
3495 };
3496 
3497 /// Represents a pack of using declarations that a single
3498 /// using-declarator pack-expanded into.
3499 ///
3500 /// \code
3501 /// template<typename ...T> struct X : T... {
3502 /// using T::operator()...;
3503 /// using T::operator T...;
3504 /// };
3505 /// \endcode
3506 ///
3507 /// In the second case above, the UsingPackDecl will have the name
3508 /// 'operator T' (which contains an unexpanded pack), but the individual
3509 /// UsingDecls and UsingShadowDecls will have more reasonable names.
3510 class UsingPackDecl final
3511  : public NamedDecl, public Mergeable<UsingPackDecl>,
3512  private llvm::TrailingObjects<UsingPackDecl, NamedDecl *> {
3513  /// The UnresolvedUsingValueDecl or UnresolvedUsingTypenameDecl from
3514  /// which this waas instantiated.
3515  NamedDecl *InstantiatedFrom;
3516 
3517  /// The number of using-declarations created by this pack expansion.
3518  unsigned NumExpansions;
3519 
3520  UsingPackDecl(DeclContext *DC, NamedDecl *InstantiatedFrom,
3521  ArrayRef<NamedDecl *> UsingDecls)
3522  : NamedDecl(UsingPack, DC,
3523  InstantiatedFrom ? InstantiatedFrom->getLocation()
3524  : SourceLocation(),
3525  InstantiatedFrom ? InstantiatedFrom->getDeclName()
3526  : DeclarationName()),
3527  InstantiatedFrom(InstantiatedFrom), NumExpansions(UsingDecls.size()) {
3528  std::uninitialized_copy(UsingDecls.begin(), UsingDecls.end(),
3529  getTrailingObjects<NamedDecl *>());
3530  }
3531 
3532  void anchor() override;
3533 
3534 public:
3535  friend class ASTDeclReader;
3536  friend class ASTDeclWriter;
3538 
3539  /// Get the using declaration from which this was instantiated. This will
3540  /// always be an UnresolvedUsingValueDecl or an UnresolvedUsingTypenameDecl
3541  /// that is a pack expansion.
3542  NamedDecl *getInstantiatedFromUsingDecl() const { return InstantiatedFrom; }
3543 
3544  /// Get the set of using declarations that this pack expanded into. Note that
3545  /// some of these may still be unresolved.
3547  return llvm::makeArrayRef(getTrailingObjects<NamedDecl *>(), NumExpansions);
3548  }
3549 
3550  static UsingPackDecl *Create(ASTContext &C, DeclContext *DC,
3551  NamedDecl *InstantiatedFrom,
3552  ArrayRef<NamedDecl *> UsingDecls);
3553 
3554  static UsingPackDecl *CreateDeserialized(ASTContext &C, unsigned ID,
3555  unsigned NumExpansions);
3556 
3557  SourceRange getSourceRange() const override LLVM_READONLY {
3558  return InstantiatedFrom->getSourceRange();
3559  }
3560 
3561  UsingPackDecl *getCanonicalDecl() override { return getFirstDecl(); }
3562  const UsingPackDecl *getCanonicalDecl() const { return getFirstDecl(); }
3563 
3564  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3565  static bool classofKind(Kind K) { return K == UsingPack; }
3566 };
3567 
3568 /// Represents a dependent using declaration which was not marked with
3569 /// \c typename.
3570 ///
3571 /// Unlike non-dependent using declarations, these *only* bring through
3572 /// non-types; otherwise they would break two-phase lookup.
3573 ///
3574 /// \code
3575 /// template <class T> class A : public Base<T> {
3576 /// using Base<T>::foo;
3577 /// };
3578 /// \endcode
3580  public Mergeable<UnresolvedUsingValueDecl> {
3581  /// The source location of the 'using' keyword
3582  SourceLocation UsingLocation;
3583 
3584  /// If this is a pack expansion, the location of the '...'.
3585  SourceLocation EllipsisLoc;
3586 
3587  /// The nested-name-specifier that precedes the name.
3588  NestedNameSpecifierLoc QualifierLoc;
3589 
3590  /// Provides source/type location info for the declaration name
3591  /// embedded in the ValueDecl base class.
3592  DeclarationNameLoc DNLoc;
3593 
3595  SourceLocation UsingLoc,
3596  NestedNameSpecifierLoc QualifierLoc,
3597  const DeclarationNameInfo &NameInfo,
3598  SourceLocation EllipsisLoc)
3599  : ValueDecl(UnresolvedUsingValue, DC,
3600  NameInfo.getLoc(), NameInfo.getName(), Ty),
3601  UsingLocation(UsingLoc), EllipsisLoc(EllipsisLoc),
3602  QualifierLoc(QualifierLoc), DNLoc(NameInfo.getInfo()) {}
3603 
3604  void anchor() override;
3605 
3606 public:
3607  friend class ASTDeclReader;
3608  friend class ASTDeclWriter;
3609 
3610  /// Returns the source location of the 'using' keyword.
3611  SourceLocation getUsingLoc() const { return UsingLocation; }
3612 
3613  /// Set the source location of the 'using' keyword.
3614  void setUsingLoc(SourceLocation L) { UsingLocation = L; }
3615 
3616  /// Return true if it is a C++03 access declaration (no 'using').
3617  bool isAccessDeclaration() const { return UsingLocation.isInvalid(); }
3618 
3619  /// Retrieve the nested-name-specifier that qualifies the name,
3620  /// with source-location information.
3621  NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; }
3622 
3623  /// Retrieve the nested-name-specifier that qualifies the name.
3625  return QualifierLoc.getNestedNameSpecifier();
3626  }
3627 
3629  return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc);
3630  }
3631 
3632  /// Determine whether this is a pack expansion.
3633  bool isPackExpansion() const {
3634  return EllipsisLoc.isValid();
3635  }
3636 
3637  /// Get the location of the ellipsis if this is a pack expansion.
3639  return EllipsisLoc;
3640  }
3641 
3642  static UnresolvedUsingValueDecl *
3643  Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc,
3644  NestedNameSpecifierLoc QualifierLoc,
3645  const DeclarationNameInfo &NameInfo, SourceLocation EllipsisLoc);
3646 
3647  static UnresolvedUsingValueDecl *
3648  CreateDeserialized(ASTContext &C, unsigned ID);
3649 
3650  SourceRange getSourceRange() const override LLVM_READONLY;
3651 
3652  /// Retrieves the canonical declaration of this declaration.
3654  return getFirstDecl();
3655  }
3657  return getFirstDecl();
3658  }
3659 
3660  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3661  static bool classofKind(Kind K) { return K == UnresolvedUsingValue; }
3662 };
3663 
3664 /// Represents a dependent using declaration which was marked with
3665 /// \c typename.
3666 ///
3667 /// \code
3668 /// template <class T> class A : public Base<T> {
3669 /// using typename Base<T>::foo;
3670 /// };
3671 /// \endcode
3672 ///
3673 /// The type associated with an unresolved using typename decl is
3674 /// currently always a typename type.
3676  : public TypeDecl,
3677  public Mergeable<UnresolvedUsingTypenameDecl> {
3678  friend class ASTDeclReader;
3679 
3680  /// The source location of the 'typename' keyword
3681  SourceLocation TypenameLocation;
3682 
3683  /// If this is a pack expansion, the location of the '...'.
3684  SourceLocation EllipsisLoc;
3685 
3686  /// The nested-name-specifier that precedes the name.
3687  NestedNameSpecifierLoc QualifierLoc;
3688 
3690  SourceLocation TypenameLoc,
3691  NestedNameSpecifierLoc QualifierLoc,
3692  SourceLocation TargetNameLoc,
3693  IdentifierInfo *TargetName,
3694  SourceLocation EllipsisLoc)
3695  : TypeDecl(UnresolvedUsingTypename, DC, TargetNameLoc, TargetName,
3696  UsingLoc),
3697  TypenameLocation(TypenameLoc), EllipsisLoc(EllipsisLoc),
3698  QualifierLoc(QualifierLoc) {}
3699 
3700  void anchor() override;
3701 
3702 public:
3703  /// Returns the source location of the 'using' keyword.
3704  SourceLocation getUsingLoc() const { return getLocStart(); }
3705 
3706  /// Returns the source location of the 'typename' keyword.
3707  SourceLocation getTypenameLoc() const { return TypenameLocation; }
3708 
3709  /// Retrieve the nested-name-specifier that qualifies the name,
3710  /// with source-location information.
3711  NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; }
3712 
3713  /// Retrieve the nested-name-specifier that qualifies the name.
3715  return QualifierLoc.getNestedNameSpecifier();
3716  }
3717 
3719  return DeclarationNameInfo(getDeclName(), getLocation());
3720  }
3721 
3722  /// Determine whether this is a pack expansion.
3723  bool isPackExpansion() const {
3724  return EllipsisLoc.isValid();
3725  }
3726 
3727  /// Get the location of the ellipsis if this is a pack expansion.
3729  return EllipsisLoc;
3730  }
3731 
3733  Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc,
3734  SourceLocation TypenameLoc, NestedNameSpecifierLoc QualifierLoc,
3735  SourceLocation TargetNameLoc, DeclarationName TargetName,
3736  SourceLocation EllipsisLoc);
3737 
3739  CreateDeserialized(ASTContext &C, unsigned ID);
3740 
3741  /// Retrieves the canonical declaration of this declaration.
3743  return getFirstDecl();
3744  }
3746  return getFirstDecl();
3747  }
3748 
3749  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3750  static bool classofKind(Kind K) { return K == UnresolvedUsingTypename; }
3751 };
3752 
3753 /// Represents a C++11 static_assert declaration.
3754 class StaticAssertDecl : public Decl {
3755  llvm::PointerIntPair<Expr *, 1, bool> AssertExprAndFailed;
3756  StringLiteral *Message;
3757  SourceLocation RParenLoc;
3758 
3759  StaticAssertDecl(DeclContext *DC, SourceLocation StaticAssertLoc,
3760  Expr *AssertExpr, StringLiteral *Message,
3761  SourceLocation RParenLoc, bool Failed)
3762  : Decl(StaticAssert, DC, StaticAssertLoc),
3763  AssertExprAndFailed(AssertExpr, Failed), Message(Message),
3764  RParenLoc(RParenLoc) {}
3765 
3766  virtual void anchor();
3767 
3768 public:
3769  friend class ASTDeclReader;
3770 
3772  SourceLocation StaticAssertLoc,
3773  Expr *AssertExpr, StringLiteral *Message,
3774  SourceLocation RParenLoc, bool Failed);
3775  static StaticAssertDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3776 
3777  Expr *getAssertExpr() { return AssertExprAndFailed.getPointer(); }
3778  const Expr *getAssertExpr() const { return AssertExprAndFailed.getPointer(); }
3779 
3780  StringLiteral *getMessage() { return Message; }
3781  const StringLiteral *getMessage() const { return Message; }
3782 
3783  bool isFailed() const { return AssertExprAndFailed.getInt(); }
3784 
3785  SourceLocation getRParenLoc() const { return RParenLoc; }
3786 
3787  SourceRange getSourceRange() const override LLVM_READONLY {
3788  return SourceRange(getLocation(), getRParenLoc());
3789  }
3790 
3791  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3792  static bool classofKind(Kind K) { return K == StaticAssert; }
3793 };
3794 
3795 /// A binding in a decomposition declaration. For instance, given:
3796 ///
3797 /// int n[3];
3798 /// auto &[a, b, c] = n;
3799 ///
3800 /// a, b, and c are BindingDecls, whose bindings are the expressions
3801 /// x[0], x[1], and x[2] respectively, where x is the implicit
3802 /// DecompositionDecl of type 'int (&)[3]'.
3803 class BindingDecl : public ValueDecl {
3804  /// The binding represented by this declaration. References to this
3805  /// declaration are effectively equivalent to this expression (except
3806  /// that it is only evaluated once at the point of declaration of the
3807  /// binding).
3808  Expr *Binding = nullptr;
3809 
3811  : ValueDecl(Decl::Binding, DC, IdLoc, Id, QualType()) {}
3812 
3813  void anchor() override;
3814 
3815 public:
3816  friend class ASTDeclReader;
3817 
3818  static BindingDecl *Create(ASTContext &C, DeclContext *DC,
3819  SourceLocation IdLoc, IdentifierInfo *Id);
3820  static BindingDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3821 
3822  /// Get the expression to which this declaration is bound. This may be null
3823  /// in two different cases: while parsing the initializer for the
3824  /// decomposition declaration, and when the initializer is type-dependent.
3825  Expr *getBinding() const { return Binding; }
3826 
3827  /// Get the variable (if any) that holds the value of evaluating the binding.
3828  /// Only present for user-defined bindings for tuple-like types.
3829  VarDecl *getHoldingVar() const;
3830 
3831  /// Set the binding for this BindingDecl, along with its declared type (which
3832  /// should be a possibly-cv-qualified form of the type of the binding, or a
3833  /// reference to such a type).
3834  void setBinding(QualType DeclaredType, Expr *Binding) {
3835  setType(DeclaredType);
3836  this->Binding = Binding;
3837  }
3838 
3839  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3840  static bool classofKind(Kind K) { return K == Decl::Binding; }
3841 };
3842 
3843 /// A decomposition declaration. For instance, given:
3844 ///
3845 /// int n[3];
3846 /// auto &[a, b, c] = n;
3847 ///
3848 /// the second line declares a DecompositionDecl of type 'int (&)[3]', and
3849 /// three BindingDecls (named a, b, and c). An instance of this class is always
3850 /// unnamed, but behaves in almost all other respects like a VarDecl.
3852  : public VarDecl,
3853  private llvm::TrailingObjects<DecompositionDecl, BindingDecl *> {
3854  /// The number of BindingDecl*s following this object.
3855  unsigned NumBindings;
3856 
3858  SourceLocation LSquareLoc, QualType T,
3859  TypeSourceInfo *TInfo, StorageClass SC,
3860  ArrayRef<BindingDecl *> Bindings)
3861  : VarDecl(Decomposition, C, DC, StartLoc, LSquareLoc, nullptr, T, TInfo,
3862  SC),
3863  NumBindings(Bindings.size()) {
3864  std::uninitialized_copy(Bindings.begin(), Bindings.end(),
3865  getTrailingObjects<BindingDecl *>());
3866  }
3867 
3868  void anchor() override;
3869 
3870 public:
3871  friend class ASTDeclReader;
3873 
3875  SourceLocation StartLoc,
3876  SourceLocation LSquareLoc,
3877  QualType T, TypeSourceInfo *TInfo,
3878  StorageClass S,
3879  ArrayRef<BindingDecl *> Bindings);
3880  static DecompositionDecl *CreateDeserialized(ASTContext &C, unsigned ID,
3881  unsigned NumBindings);
3882 
3884  return llvm::makeArrayRef(getTrailingObjects<BindingDecl *>(), NumBindings);
3885  }
3886 
3887  void printName(raw_ostream &os) const override;
3888 
3889  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
3890  static bool classofKind(Kind K) { return K == Decomposition; }
3891 };
3892 
3893 /// An instance of this class represents the declaration of a property
3894 /// member. This is a Microsoft extension to C++, first introduced in
3895 /// Visual Studio .NET 2003 as a parallel to similar features in C#
3896 /// and Managed C++.
3897 ///
3898 /// A property must always be a non-static class member.
3899 ///
3900 /// A property member superficially resembles a non-static data
3901 /// member, except preceded by a property attribute:
3902 /// __declspec(property(get=GetX, put=PutX)) int x;
3903 /// Either (but not both) of the 'get' and 'put' names may be omitted.
3904 ///
3905 /// A reference to a property is always an lvalue. If the lvalue
3906 /// undergoes lvalue-to-rvalue conversion, then a getter name is
3907 /// required, and that member is called with no arguments.
3908 /// If the lvalue is assigned into, then a setter name is required,
3909 /// and that member is called with one argument, the value assigned.
3910 /// Both operations are potentially overloaded. Compound assignments
3911 /// are permitted, as are the increment and decrement operators.
3912 ///
3913 /// The getter and putter methods are permitted to be overloaded,
3914 /// although their return and parameter types are subject to certain
3915 /// restrictions according to the type of the property.
3916 ///
3917 /// A property declared using an incomplete array type may
3918 /// additionally be subscripted, adding extra parameters to the getter
3919 /// and putter methods.
3921  IdentifierInfo *GetterId, *SetterId;
3922 
3924  QualType T, TypeSourceInfo *TInfo, SourceLocation StartL,
3925  IdentifierInfo *Getter, IdentifierInfo *Setter)
3926  : DeclaratorDecl(MSProperty, DC, L, N, T, TInfo, StartL),
3927  GetterId(Getter), SetterId(Setter) {}
3928 
3929 public:
3930  friend class ASTDeclReader;
3931 
3932  static MSPropertyDecl *Create(ASTContext &C, DeclContext *DC,
3934  TypeSourceInfo *TInfo, SourceLocation StartL,
3935  IdentifierInfo *Getter, IdentifierInfo *Setter);
3936  static MSPropertyDecl *CreateDeserialized(ASTContext &C, unsigned ID);
3937 
3938  static bool classof(const Decl *D) { return D->getKind() == MSProperty; }
3939 
3940  bool hasGetter() const { return GetterId != nullptr; }
3941  IdentifierInfo* getGetterId() const { return GetterId; }
3942  bool hasSetter() const { return SetterId != nullptr; }
3943  IdentifierInfo* getSetterId() const { return SetterId; }
3944 };
3945 
3946 /// Insertion operator for diagnostics. This allows sending an AccessSpecifier
3947 /// into a diagnostic with <<.
3949  AccessSpecifier AS);
3950 
3952  AccessSpecifier AS);
3953 
3954 } // namespace clang
3955 
3956 #endif // LLVM_CLANG_AST_DECLCXX_H
const CXXRecordDecl * getPreviousDecl() const
Definition: DeclCXX.h:743
bool isBaseInitializer() const
Determine whether this initializer is initializing a base class.
Definition: DeclCXX.h:2318
SourceLocation getLoc() const
getLoc - Returns the main location of the declaration name.
void setSourceOrder(int Pos)
Set the source order of this initializer.
Definition: DeclCXX.h:2432
Defines the clang::ASTContext interface.
NamedDecl * getTargetDecl() const
Gets the underlying declaration which has been brought into the local scope.
Definition: DeclCXX.h:3209
static const Decl * getCanonicalDecl(const Decl *D)
Represents a function declaration or definition.
Definition: Decl.h:1716
Expr * getInit() const
Get the initializer.
Definition: DeclCXX.h:2447
llvm::iterator_range< redecl_iterator > redecl_range
Definition: DeclBase.h:944
A (possibly-)qualified type.
Definition: Type.h:655
unsigned getNumCtorInitializers() const
Determine the number of arguments used to initialize the member or base.
Definition: DeclCXX.h:2575
bool hasUninitializedReferenceMember() const
Whether this class or any of its subobjects has any members of reference type which would make value-...
Definition: DeclCXX.h:1303
bool isStandardLayout() const
Determine whether this class is standard-layout per C++ [class]p7.
Definition: DeclCXX.h:1352
base_class_range bases()
Definition: DeclCXX.h:825
static bool classof(const Decl *D)
Definition: DeclCXX.h:3660
bool mayBeNonDynamicClass() const
Definition: DeclCXX.h:803
const CXXMethodDecl *const * method_iterator
Definition: DeclCXX.h:2153
const DeclarationNameLoc & getInfo() const
unsigned getNumBases() const
Retrieves the number of base classes of this class.
Definition: DeclCXX.h:819
SourceLocation getEllipsisLoc() const
Get the location of the ellipsis if this is a pack expansion.
Definition: DeclCXX.h:3638
SourceLocation getLParenLoc() const
Definition: DeclCXX.h:2443
DominatorTree GraphTraits specialization so the DominatorTree can be iterable by generic graph iterat...
Definition: Dominators.h:30
static bool classof(const Decl *D)
Definition: DeclCXX.h:2902
Iterates through the using shadow declarations associated with this using declaration.
Definition: DeclCXX.h:3422
Stmt - This represents one statement.
Definition: Stmt.h:66
static bool classofKind(Kind K)
Definition: DeclCXX.h:3233
FunctionType - C99 6.7.5.3 - Function Declarators.
Definition: Type.h:3211
bool isInClassMemberInitializer() const
Determine whether this initializer is an implicit initializer generated for a field with an initializ...
Definition: DeclCXX.h:2340
static bool classof(const Decl *D)
Definition: DeclCXX.h:2813
unsigned getNumVBases() const
Retrieves the number of virtual base classes of this class.
Definition: DeclCXX.h:840
C Language Family Type Representation.
bool hasNonTrivialCopyConstructor() const
Determine whether this class has a non-trivial copy constructor (C++ [class.copy]p6, C++11 [class.copy]p12)
Definition: DeclCXX.h:1414
bool allowConstDefaultInit() const
Determine whether declaring a const variable with this type is ok per core issue 253.
Definition: DeclCXX.h:1507
static TemplateSpecializationKind getTemplateSpecializationKind(Decl *D)
Determine what kind of template specialization the given declaration is.
bool hasIrrelevantDestructor() const
Determine whether this class has a destructor which has no semantic effect.
Definition: DeclCXX.h:1518
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:86
bool needsOverloadResolutionForDestructor() const
Determine whether we need to eagerly declare a destructor for this class.
Definition: DeclCXX.h:1199
void setAccessSpecifierLoc(SourceLocation ASLoc)
Sets the location of the access specifier.
Definition: DeclCXX.h:151
IdentifierInfo * getGetterId() const
Definition: DeclCXX.h:3941
bool isVirtual() const
Definition: DeclCXX.h:2090
LambdaCaptureDefault
The default, if any, capture method for a lambda expression.
Definition: Lambda.h:23
bool isVirtual() const
Determines whether the base class is a virtual base class (or not).
Definition: DeclCXX.h:247
bool hasUserDeclaredCopyAssignment() const
Determine whether this class has a user-declared copy assignment operator.
Definition: DeclCXX.h:1111
init_const_reverse_iterator init_rend() const
Definition: DeclCXX.h:2569
shadow_iterator shadow_end() const
Definition: DeclCXX.h:3468
bool isPOD() const
Whether this class is a POD-type (C++ [class]p4)
Definition: DeclCXX.h:1316
bool isWritten() const
Determine whether this initializer is explicitly written in the source code.
Definition: DeclCXX.h:2417
StringRef P
void setPure(bool P=true)
Definition: Decl.cpp:2678
init_reverse_iterator init_rend()
Definition: DeclCXX.h:2566
bool isPackExpansion() const
Determine whether this is a pack expansion.
Definition: DeclCXX.h:3723
const DiagnosticBuilder & operator<<(const DiagnosticBuilder &DB, const Attr *At)
Definition: Attr.h:322
SourceLocation getColonLoc() const
The location of the colon following the access specifier.
Definition: DeclCXX.h:154
The base class of the type hierarchy.
Definition: Type.h:1428
static bool classof(const Decl *D)
Definition: DeclCXX.h:3493
Expr * getOperatorDeleteThisArg() const
Definition: DeclCXX.h:2736
const CXXMethodDecl * getDevirtualizedMethod(const Expr *Base, bool IsAppleKext) const
Definition: DeclCXX.h:2108
Represent a C++ namespace.
Definition: Decl.h:514
std::reverse_iterator< init_iterator > init_reverse_iterator
Definition: DeclCXX.h:2555
NestedNameSpecifier * getQualifier() const
Retrieve the nested-name-specifier that qualifies the name of the namespace.
Definition: DeclCXX.h:2973
const NamedDecl * getNominatedNamespaceAsWritten() const
Definition: DeclCXX.h:2978
bool hasTrivialMoveConstructor() const
Determine whether this class has a trivial move constructor (C++11 [class.copy]p12) ...
Definition: DeclCXX.h:1427
AccessSpecifier
A C++ access specifier (public, private, protected), plus the special value "none" which means differ...
Definition: Specifiers.h:98
const NestedNameSpecifier * Specifier
A container of type source information.
Definition: Decl.h:86
bool hasConstexprNonCopyMoveConstructor() const
Determine whether this class has at least one constexpr constructor other than the copy or move const...
Definition: DeclCXX.h:1382
capture_const_range captures() const
Definition: DeclCXX.h:1252
static bool classof(const Decl *D)
Definition: DeclCXX.h:2037
base_class_const_iterator vbases_end() const
Definition: DeclCXX.h:852
bool needsImplicitMoveAssignment() const
Determine whether this class should get an implicit move assignment operator or if any existing speci...
Definition: DeclCXX.h:1166
QualType getConversionType() const
Returns the type that this conversion function is converting to.
Definition: DeclCXX.h:2797
static bool classofKind(Kind K)
Definition: DeclCXX.h:3131
bool hasFriends() const
Determines whether this record has any friends.
Definition: DeclCXX.h:908
Describes the capture of a variable or of this, or of a C++1y init-capture.
Definition: LambdaCapture.h:26
Represents a path from a specific derived class (which is not represented as part of the path) to a p...
bool hasUserDeclaredMoveOperation() const
Whether this class has a user-declared move constructor or assignment operator.
Definition: DeclCXX.h:1047
unsigned getIdentifierNamespace() const
Definition: DeclBase.h:799
static bool classof(const Decl *D)
Definition: DeclCXX.h:3839
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2477
bool implicitCopyAssignmentHasConstParam() const
Determine whether an implicit copy assignment operator for this type would have a parameter with a co...
Definition: DeclCXX.h:1129
float __ovld __cnfn distance(float p0, float p1)
Returns the distance between p0 and p1.
bool isVirtualAsWritten() const
Whether this function is marked as virtual explicitly.
Definition: Decl.h:2036
bool needsOverloadResolutionForCopyConstructor() const
Determine whether we need to eagerly declare a defaulted copy constructor for this class...
Definition: DeclCXX.h:1013
bool isPackExpansion() const
Determine whether this initializer is a pack expansion.
Definition: DeclCXX.h:2351
SourceLocation getTargetNameLoc() const
Returns the location of the identifier in the named namespace.
Definition: DeclCXX.h:3120
friend bool operator!=(shadow_iterator x, shadow_iterator y)
Definition: DeclCXX.h:3453
bool isIndirectMemberInitializer() const
Definition: DeclCXX.h:2330
const Expr * getAssertExpr() const
Definition: DeclCXX.h:3778
FriendDecl - Represents the declaration of a friend entity, which can be a function, a type, or a templated function or type.
Definition: DeclFriend.h:54
Represents a variable declaration or definition.
Definition: Decl.h:814
static bool classof(const Decl *D)
Definition: DeclCXX.h:1976
const T * getAs() const
Member-template getAs<specific type>&#39;.
Definition: Type.h:6526
bool needsImplicitCopyAssignment() const
Determine whether this class needs an implicit copy assignment operator to be lazily declared...
Definition: DeclCXX.h:1117
NamedDecl * getUnderlyingDecl()
Looks through UsingDecls and ObjCCompatibleAliasDecls for the underlying named decl.
Definition: Decl.h:431
bool hasTrivialDefaultConstructor() const
Determine whether this class has a trivial default constructor (C++11 [class.ctor]p5).
Definition: DeclCXX.h:1367
Stores a list of template parameters for a TemplateDecl and its derived classes.
Definition: DeclTemplate.h:68
bool isMemberInitializer() const
Determine whether this initializer is initializing a non-static data member.
Definition: DeclCXX.h:2324
SourceLocation getEllipsisLoc() const
Definition: DeclCXX.h:2356
bool hasDefinition() const
Definition: DeclCXX.h:778
UsingShadowDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:3200
static AccessSpecDecl * Create(ASTContext &C, AccessSpecifier AS, DeclContext *DC, SourceLocation ASLoc, SourceLocation ColonLoc)
Definition: DeclCXX.h:163
Represents any kind of function declaration, whether it is a concrete function or a function template...
Definition: DeclCXX.h:78
DeclarationNameInfo getNameInfo() const
Definition: DeclCXX.h:3628
bool isExplicitSpecified() const
Whether this function is marked as explicit explicitly.
Definition: DeclCXX.h:2588
SourceLocation getRParenLoc() const
Definition: DeclCXX.h:2444
reference operator*() const
Definition: DeclCXX.h:3436
std::string getName(ArrayRef< StringRef > Parts) const
Get the platform-specific name separator.
bool isExplicitSpecified() const
Whether this deduction guide was declared with the &#39;explicit&#39; specifier.
Definition: DeclCXX.h:2023
static bool classof(const Decl *D)
Definition: DeclCXX.h:3791
An UnresolvedSet-like class that might not have been loaded from the external AST source yet...
const FunctionDecl * isLocalClass() const
If the class is a local class [class.local], returns the enclosing function declaration.
Definition: DeclCXX.h:1651
bool hasNonTrivialDefaultConstructor() const
Determine whether this class has a non-trivial default constructor (C++11 [class.ctor]p5).
Definition: DeclCXX.h:1374
Base wrapper for a particular "section" of type source info.
Definition: TypeLoc.h:56
Represents a struct/union/class.
Definition: Decl.h:3570
bool hasTrivialCopyConstructorForCall() const
Definition: DeclCXX.h:1408
LanguageIDs getLanguage() const
Return the language specified by this linkage specification.
Definition: DeclCXX.h:2869
An iterator over the friend declarations of a class.
Definition: DeclFriend.h:188
bool isEmpty() const
Determine whether this is an empty class in the sense of (C++11 [meta.unary.prop]).
Definition: DeclCXX.h:1331
Description of a constructor that was inherited from a base class.
Definition: DeclCXX.h:2451
DeclarationName getDeclName() const
Get the actual, stored name of the declaration, which may be a special name.
Definition: Decl.h:297
Provides common interface for the Decls that can be redeclared.
Definition: Redeclarable.h:85
SourceLocation getLocEnd() const LLVM_READONLY
Definition: DeclCXX.h:2889
One of these records is kept for each identifier that is lexed.
CXXRecordDecl * getParent()
Returns the parent of this method declaration, which is the class in which this method is defined...
Definition: DeclCXX.h:2171
bool isConst() const
Definition: DeclCXX.h:2087
StringLiteral * getMessage()
Definition: DeclCXX.h:3780
static bool classof(const Decl *D)
Definition: DeclCXX.h:3017
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
Definition: DeclCXX.h:3013
CXXRecordDecl * getPreviousDecl()
Definition: DeclCXX.h:738
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:150
A C++ nested-name-specifier augmented with source location information.
SourceLocation getColonLoc() const
Returns the location of &#39;:&#39;.
NamespaceDecl * getNamespace()
Retrieve the namespace declaration aliased by this directive.
Definition: DeclCXX.h:3101
static bool classofKind(Kind K)
Definition: DeclCXX.h:3661
bool defaultedDefaultConstructorIsConstexpr() const
Determine whether a defaulted default constructor for this class would be constexpr.
Definition: DeclCXX.h:1390
bool mayBeDynamicClass() const
Definition: DeclCXX.h:797
void setLanguage(LanguageIDs L)
Set the language specified by this linkage specification.
Definition: DeclCXX.h:2872
static bool classof(const Decl *D)
Definition: DeclCXX.h:3350
SourceLocation getLocStart() const LLVM_READONLY
Definition: DeclCXX.h:236
Represents a member of a struct/union/class.
Definition: Decl.h:2534
bool isVolatile() const
Definition: DeclCXX.h:2088
TypeSourceInfo * getTypeSourceInfo() const
Returns the declarator information for a base class or delegating initializer.
Definition: DeclCXX.h:2379
llvm::iterator_range< capture_const_iterator > capture_const_range
Definition: DeclCXX.h:1250
conversion_iterator conversion_end() const
Definition: DeclCXX.h:1271
void startDefinition()
Starts the definition of this tag declaration.
Definition: Decl.cpp:3791
CXXMethodDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:2126
bool isCopyOrMoveConstructor() const
Determine whether this a copy or move constructor.
Definition: DeclCXX.h:2653
static bool classofKind(Kind K)
Definition: DeclCXX.h:3494
bool hasTrivialMoveAssignment() const
Determine whether this class has a trivial move assignment operator (C++11 [class.copy]p25)
Definition: DeclCXX.h:1467
InheritedConstructor getInheritedConstructor() const
Get the constructor that this inheriting constructor is based on.
Definition: DeclCXX.h:2673
The iterator over UnresolvedSets.
Definition: UnresolvedSet.h:32
static NamespaceDecl * getNamespace(const NestedNameSpecifier *X)
virtual SourceRange getSourceRange() const LLVM_READONLY
Source range that this declaration covers.
Definition: DeclBase.h:405
static bool classof(const Decl *D)
Definition: DeclCXX.h:3130
FieldDecl * getAnonField() const
Definition: Decl.h:2810
bool hasUserDeclaredDestructor() const
Determine whether this class has a user-declared destructor.
Definition: DeclCXX.h:1187
unsigned getTypeQualifiers() const
Definition: DeclCXX.h:2184
method_iterator method_begin() const
Method begin iterator.
Definition: DeclCXX.h:873
static bool classofKind(Kind K)
Definition: DeclCXX.h:3351
Represents an access specifier followed by colon &#39;:&#39;.
Definition: DeclCXX.h:132
bool hasGetter() const
Definition: DeclCXX.h:3940
llvm::iterator_range< init_iterator > init_range
Definition: DeclCXX.h:2528
TypeSourceInfo * getLambdaTypeInfo() const
Definition: DeclCXX.h:1968
NamespaceAliasDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:3083
llvm::iterator_range< friend_iterator > friend_range
Definition: DeclCXX.h:900
void setImplicitCopyConstructorIsDeleted()
Set that we attempted to declare an implicit copy constructor, but overload resolution failed so we d...
Definition: DeclCXX.h:1066
static bool classofKind(Kind K)
Definition: DeclCXX.h:3890
Represents a C++ using-declaration.
Definition: DeclCXX.h:3360
UnresolvedUsingValueDecl * getCanonicalDecl() override
Retrieves the canonical declaration of this declaration.
Definition: DeclCXX.h:3653
void setUsingLoc(SourceLocation L)
Set the source location of the &#39;using&#39; keyword.
Definition: DeclCXX.h:3396
ArrayRef< BindingDecl * > bindings() const
Definition: DeclCXX.h:3883
bool hasNonLiteralTypeFieldsOrBases() const
Determine whether this class has a non-literal or/ volatile type non-static data member or base class...
Definition: DeclCXX.h:1524
friend TrailingObjects
Definition: DeclCXX.h:3537
RefQualifierKind getRefQualifier() const
Retrieve the ref-qualifier associated with this method.
Definition: DeclCXX.h:2199
bool isDelegatingConstructor() const
Determine whether this constructor is a delegating constructor.
Definition: DeclCXX.h:2596
CXXMethodDecl(Kind DK, ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc, const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo, StorageClass SC, bool isInline, bool isConstexpr, SourceLocation EndLocation)
Definition: DeclCXX.h:2049
bool isBaseVirtual() const
Returns whether the base is virtual or not.
Definition: DeclCXX.h:2371
bool hasMoveAssignment() const
Determine whether this class has a move assignment operator.
Definition: DeclCXX.h:1149
AccessSpecifier getAccessSpecifier() const
Returns the access specifier for this base specifier.
Definition: DeclCXX.h:274
const CXXRecordDecl * getMostRecentNonInjectedDecl() const
Definition: DeclCXX.h:767
bool getInheritConstructors() const
Determine whether this base class&#39;s constructors get inherited.
Definition: DeclCXX.h:257
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified...
bool needsOverloadResolutionForCopyAssignment() const
Determine whether we need to eagerly declare a defaulted copy assignment operator for this class...
Definition: DeclCXX.h:1123
NamedDecl * getNominatedNamespaceAsWritten()
Definition: DeclCXX.h:2977
bool hasNonTrivialDestructorForCall() const
Definition: DeclCXX.h:1496
FunctionDecl * isLocalClass()
Definition: DeclCXX.h:1658
static bool classof(const Decl *D)
Definition: DeclCXX.h:2748
Represents a declaration of a type.
Definition: Decl.h:2829
void setLambdaMangling(unsigned ManglingNumber, Decl *ContextDecl)
Set the mangling number and context declaration for a lambda class.
Definition: DeclCXX.h:1926
bool isAccessDeclaration() const
Return true if it is a C++03 access declaration (no &#39;using&#39;).
Definition: DeclCXX.h:3412
bool isLambda() const
Determine whether this class describes a lambda function object.
Definition: DeclCXX.h:1204
static DeclContext * castToDeclContext(const LinkageSpecDecl *D)
Definition: DeclCXX.h:2905
base_class_const_iterator bases_begin() const
Definition: DeclCXX.h:833
CXXRecordDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:730
llvm::iterator_range< init_const_iterator > init_const_range
Definition: DeclCXX.h:2529
CXXConversionDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:2805
bool isAnyMemberInitializer() const
Definition: DeclCXX.h:2326
base_class_iterator bases_begin()
Definition: DeclCXX.h:832
SourceLocation getExternLoc() const
Definition: DeclCXX.h:2881
SourceLocation getLocEnd() const LLVM_READONLY
Definition: DeclCXX.h:238
void setNumCtorInitializers(unsigned numCtorInitializers)
Definition: DeclCXX.h:2579
FieldDecl * getAnyMember() const
Definition: DeclCXX.h:2391
A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked l...
Definition: ExprCXX.h:1649
bool hasTrivialDestructor() const
Determine whether this class has a trivial destructor (C++ [class.dtor]p3)
Definition: DeclCXX.h:1482
bool isInstance() const
Definition: DeclCXX.h:2073
bool hasSimpleCopyConstructor() const
true if we know for sure that this class has a single, accessible, unambiguous copy constructor that ...
Definition: DeclCXX.h:940
FieldDecl * getMember() const
If this is a member initializer, returns the declaration of the non-static data member being initiali...
Definition: DeclCXX.h:2385
Represents a linkage specification.
Definition: DeclCXX.h:2823
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
Definition: DeclCXX.h:3787
shadow_iterator shadow_begin() const
Definition: DeclCXX.h:3464
bool hasConstexprDefaultConstructor() const
Determine whether this class has a constexpr default constructor.
Definition: DeclCXX.h:1396
bool isAbstract() const
Determine whether this class has a pure virtual function.
Definition: DeclCXX.h:1348
A binding in a decomposition declaration.
Definition: DeclCXX.h:3803
init_iterator init_begin()
Retrieve an iterator to the first initializer.
Definition: DeclCXX.h:2537
llvm::iterator_range< overridden_cxx_method_iterator > overridden_method_range
Definition: ASTContext.h:926
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
Definition: DeclCXX.h:3557
CXXRecordDecl * getMostRecentNonInjectedDecl()
Definition: DeclCXX.h:756
SourceLocation getRParenLoc() const
Definition: DeclCXX.h:3785
llvm::iterator_range< specific_decl_iterator< CXXConstructorDecl > > ctor_range
Definition: DeclCXX.h:885
bool hasBraces() const
Determines whether this linkage specification had braces in its syntactic form.
Definition: DeclCXX.h:2876
unsigned getLambdaManglingNumber() const
If this is the closure type of a lambda expression, retrieve the number to be used for name mangling ...
Definition: DeclCXX.h:1908
bool hasCopyAssignmentWithConstParam() const
Determine whether this class has a copy assignment operator with a parameter type which is a referenc...
Definition: DeclCXX.h:1136
CXXConstructorDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:2678
bool hasUserProvidedDefaultConstructor() const
Whether this class has a user-provided default constructor per C++11.
Definition: DeclCXX.h:994
InheritedConstructor(ConstructorUsingShadowDecl *Shadow, CXXConstructorDecl *BaseCtor)
Definition: DeclCXX.h:2457
A placeholder type used to construct an empty shell of a decl-derived type that will be filled in lat...
Definition: DeclBase.h:102
CXXRecordDecl * getMostRecentDecl()
Definition: DeclCXX.h:747
NestedNameSpecifier * getQualifier() const
Retrieve the nested-name-specifier that qualifies the name of the namespace.
Definition: DeclCXX.h:3096
A little helper class used to produce diagnostics.
Definition: Diagnostic.h:1042
init_const_range inits() const
Definition: DeclCXX.h:2532
Represents a prototype with parameter type info, e.g.
Definition: Type.h:3432
bool isDynamicClass() const
Definition: DeclCXX.h:791
CXXDestructorDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:2740
static bool classofKind(Kind K)
Definition: DeclCXX.h:3750
SourceLocation getTypenameLoc() const
Returns the source location of the &#39;typename&#39; keyword.
Definition: DeclCXX.h:3707
Represents a ValueDecl that came out of a declarator.
Definition: Decl.h:689
static bool classof(const Decl *D)
Definition: DeclCXX.h:3564
bool isDelegatingInitializer() const
Determine whether this initializer is creating a delegating constructor.
Definition: DeclCXX.h:2346
init_reverse_iterator init_rbegin()
Definition: DeclCXX.h:2559
bool hasTrivialMoveConstructorForCall() const
Definition: DeclCXX.h:1432
std::forward_iterator_tag iterator_category
Definition: DeclCXX.h:3430
bool isLiteral() const
Determine whether this class is a literal type.
Definition: DeclCXX.h:1570
const CXXRecordDecl * getParent() const
Returns the parent of this using shadow declaration, which is the class in which this is declared...
Definition: DeclCXX.h:3304
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: DeclCXX.h:237
CXXCtorInitializer *const * init_const_iterator
Iterates through the member/base initializer list.
Definition: DeclCXX.h:2526
bool hasInheritedConstructor() const
Determine whether this class has a using-declaration that names a user-declared base class constructo...
Definition: DeclCXX.h:1530
capture_const_iterator captures_end() const
Definition: DeclCXX.h:1260
static bool classof(const Decl *D)
Definition: DeclCXX.h:3749
static bool classofKind(Kind K)
Definition: DeclCXX.h:3018
const UnresolvedUsingValueDecl * getCanonicalDecl() const
Definition: DeclCXX.h:3656
bool hasUserDeclaredCopyConstructor() const
Determine whether this class has a user-declared copy constructor.
Definition: DeclCXX.h:1001
Represents a shadow constructor declaration introduced into a class by a C++11 using-declaration that...
Definition: DeclCXX.h:3248
Represent the declaration of a variable (in which case it is an lvalue) a function (in which case it ...
Definition: Decl.h:637
Expr - This represents one expression.
Definition: Expr.h:106
NestedNameSpecifierLoc getQualifierLoc() const
Retrieve the nested-name-specifier that qualifies the name, with source-location information.
Definition: DeclCXX.h:3400
Defines the clang::LangOptions interface.
const NamespaceDecl * getNominatedNamespace() const
Definition: DeclCXX.h:2985
SourceLocation getAliasLoc() const
Returns the location of the alias name, i.e.
Definition: DeclCXX.h:3114
ctor_iterator ctor_end() const
Definition: DeclCXX.h:893
const CXXConversionDecl * getCanonicalDecl() const
Definition: DeclCXX.h:2808
static bool classofKind(Kind K)
Definition: DeclCXX.h:2903
int Id
Definition: ASTDiff.cpp:191
base_class_const_range bases() const
Definition: DeclCXX.h:828
bool defaultedMoveConstructorIsDeleted() const
true if a defaulted move constructor for this class would be deleted.
Definition: DeclCXX.h:923
DeclarationNameInfo getNameInfo() const
Definition: DeclCXX.h:3407
CXXRecordDecl * getTemplateInstantiationPattern()
Definition: DeclCXX.h:1637
const CXXRecordDecl * getCanonicalDecl() const
Definition: DeclCXX.h:734
Represents a C++ destructor within a class.
Definition: DeclCXX.h:2700
init_const_reverse_iterator init_rbegin() const
Definition: DeclCXX.h:2562
bool isCopyConstructor() const
Whether this constructor is a copy constructor (C++ [class.copy]p2, which can be used to copy the cla...
Definition: DeclCXX.h:2627
const UsingDecl * getCanonicalDecl() const
Definition: DeclCXX.h:3491
bool isCopyDeductionCandidate() const
Definition: DeclCXX.h:2034
Defines an enumeration for C++ overloaded operators.
void setRBraceLoc(SourceLocation L)
Definition: DeclCXX.h:2884
bool hasUserDeclaredMoveAssignment() const
Determine whether this class has had a move assignment declared by the user.
Definition: DeclCXX.h:1144
#define bool
Definition: stdbool.h:31
bool isPackExpansion() const
Determine whether this is a pack expansion.
Definition: DeclCXX.h:3633
CXXRecordDecl * getDefinition() const
Definition: DeclCXX.h:771
bool isExplicit() const
Whether this deduction guide is explicit.
Definition: DeclCXX.h:2020
base_class_iterator vbases_end()
Definition: DeclCXX.h:851
llvm::iterator_range< specific_decl_iterator< CXXMethodDecl > > method_range
Definition: DeclCXX.h:865
static TemplateParameterList * getGenericLambdaTemplateParameterList(LambdaScopeInfo *LSI, Sema &SemaRef)
Definition: SemaLambda.cpp:228
ConstructorUsingShadowDecl * getNominatedBaseClassShadowDecl() const
Get the inheriting constructor declaration for the direct base class from which this using shadow dec...
Definition: DeclCXX.h:3315
bool hasMoveConstructor() const
Determine whether this class has a move constructor.
Definition: DeclCXX.h:1059
const CXXConstructorDecl * getCanonicalDecl() const
Definition: DeclCXX.h:2681
bool needsImplicitDestructor() const
Determine whether this class needs an implicit destructor to be lazily declared.
Definition: DeclCXX.h:1193
Defines the clang::TypeLoc interface and its subclasses.
bool isTrivial() const
Determine whether this class is considered trivial.
Definition: DeclCXX.h:1549
init_const_iterator init_end() const
Retrieve an iterator past the last initializer.
Definition: DeclCXX.h:2551
CXXRecordDecl * getConstructedBaseClass() const
Get the base class whose constructor or constructor shadow declaration is passed the constructor argu...
Definition: DeclCXX.h:3331
bool isPolymorphic() const
Whether this class is polymorphic (C++ [class.virtual]), which means that the class contains or inher...
Definition: DeclCXX.h:1341
const CXXMethodDecl * getCanonicalDecl() const
Definition: DeclCXX.h:2129
void setInheritConstructors(bool Inherit=true)
Set that this base class&#39;s constructors should be inherited.
Definition: DeclCXX.h:260
StorageClass
Storage classes.
Definition: Specifiers.h:206
const UnresolvedUsingTypenameDecl * getCanonicalDecl() const
Definition: DeclCXX.h:3745
bool hasNonTrivialDestructor() const
Determine whether this class has a non-trivial destructor (C++ [class.dtor]p3)
Definition: DeclCXX.h:1492
IdentifierInfo * getSetterId() const
Definition: DeclCXX.h:3943
void setTypename(bool TN)
Sets whether the using declaration has &#39;typename&#39;.
Definition: DeclCXX.h:3418
DeclContext * getParent()
getParent - Returns the containing DeclContext.
Definition: DeclBase.h:1343
method_iterator method_end() const
Method past-the-end iterator.
Definition: DeclCXX.h:878
SourceLocation getEnd() const
static bool hasDefinition(const ObjCObjectPointerType *ObjPtr)
void setHasTrivialSpecialMemberForCall()
Definition: DeclCXX.h:1500
bool isBaseOfClass() const
Determine whether this base class is a base of a class declared with the &#39;class&#39; keyword (vs...
Definition: DeclCXX.h:251
bool hasSimpleMoveConstructor() const
true if we know for sure that this class has a single, accessible, unambiguous move constructor that ...
Definition: DeclCXX.h:947
bool hasTrivialCopyConstructor() const
Determine whether this class has a trivial copy constructor (C++ [class.copy]p6, C++11 [class...
Definition: DeclCXX.h:1404
Represents a C++ deduction guide declaration.
Definition: DeclCXX.h:1992
bool needsImplicitDefaultConstructor() const
Determine if we need to declare a default constructor for this class.
Definition: DeclCXX.h:976
Represents a C++ conversion function within a class.
Definition: DeclCXX.h:2762
bool hasNonTrivialMoveAssignment() const
Determine whether this class has a non-trivial move assignment operator (C++11 [class.copy]p25)
Definition: DeclCXX.h:1474
bool nullFieldOffsetIsZero() const
In the Microsoft C++ ABI, use zero for the field offset of a null data member pointer if we can guara...
Definition: DeclCXX.h:1943
UsingPackDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: DeclCXX.h:3561
llvm::function_ref< bool(const CXXBaseSpecifier *Specifier, CXXBasePath &Path)> BaseMatchesCallback
Function type used by lookupInBases() to determine whether a specific base class subobject matches th...
Definition: DeclCXX.h:1752
bool hasNonTrivialMoveConstructor() const
Determine whether this class has a non-trivial move constructor (C++11 [class.copy]p12) ...
Definition: DeclCXX.h:1439
CXXMethodDecl * getMostRecentDecl()
Definition: DeclCXX.h:2133
const CXXRecordDecl * getMostRecentDecl() const
Definition: DeclCXX.h:752
llvm::iterator_range< shadow_iterator > shadow_range
Definition: DeclCXX.h:3458
NestedNameSpecifier * getQualifier() const
Retrieve the nested-name-specifier that qualifies the name.
Definition: DeclCXX.h:3714
bool hasVariantMembers() const
Determine whether this class has any variant members.
Definition: DeclCXX.h:1363
bool isExplicit() const
Whether this function is explicit.
Definition: DeclCXX.h:2792
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
Definition: DeclCXX.h:3126
bool isInjectedClassName() const
Determines whether this declaration represents the injected class name.
Definition: Decl.cpp:4021
SourceLocation getUsingLoc() const
Return the location of the using keyword.
Definition: DeclCXX.h:2995
unsigned size_overridden_methods() const
Definition: DeclCXX.cpp:2126
SourceLocation getUsingLoc() const
Returns the source location of the &#39;using&#39; keyword.
Definition: DeclCXX.h:3611
const UsingPackDecl * getCanonicalDecl() const
Definition: DeclCXX.h:3562
void setColonLoc(SourceLocation CLoc)
Sets the location of the colon.
Definition: DeclCXX.h:157
#define false
Definition: stdbool.h:33
UnresolvedUsingTypenameDecl * getCanonicalDecl() override
Retrieves the canonical declaration of this declaration.
Definition: DeclCXX.h:3742
const NamespaceAliasDecl * getCanonicalDecl() const
Definition: DeclCXX.h:3086
NamedDecl * getInstantiatedFromUsingDecl() const
Get the using declaration from which this was instantiated.
Definition: DeclCXX.h:3542
shadow_iterator(UsingShadowDecl *C)
Definition: DeclCXX.h:3434
bool hasTrivialCopyAssignment() const
Determine whether this class has a trivial copy assignment operator (C++ [class.copy]p11, C++11 [class.copy]p25)
Definition: DeclCXX.h:1454
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
Definition: DeclCXX.h:2898
Encodes a location in the source.
bool isPure() const
Whether this virtual function is pure, i.e.
Definition: Decl.h:2041
static bool classofKind(Kind K)
Definition: DeclCXX.h:2749
redeclarable_base::redecl_iterator redecl_iterator
Definition: DeclCXX.h:3075
const CXXMethodDecl * getCorrespondingMethodInClass(const CXXRecordDecl *RD, bool MayBeBase=false) const
Definition: DeclCXX.h:2224
NestedNameSpecifier * getQualifier() const
Retrieve the nested-name-specifier that qualifies the name.
Definition: DeclCXX.h:3624
A set of all the primary bases for a class.
const StringLiteral * getMessage() const
Definition: DeclCXX.h:3781
SourceLocation getNamespaceKeyLocation() const
Returns the location of the namespace keyword.
Definition: DeclCXX.h:2999
DeclarationName getName() const
getName - Returns the embedded declaration name.
SourceLocation getUsingLoc() const
Return the source location of the &#39;using&#39; keyword.
Definition: DeclCXX.h:3393
std::reverse_iterator< init_const_iterator > init_const_reverse_iterator
Definition: DeclCXX.h:2557
Defines several types used to describe C++ lambda expressions that are shared between the parser and ...
Represents a dependent using declaration which was not marked with typename.
Definition: DeclCXX.h:3579
TagDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: Decl.cpp:3780
init_iterator init_end()
Retrieve an iterator past the last initializer.
Definition: DeclCXX.h:2546
NestedNameSpecifierLoc getQualifierLoc() const
Retrieve the nested-name-specifier that qualifies the name, with source-location information.
Definition: DeclCXX.h:3621
llvm::iterator_range< base_class_iterator > base_class_range
Definition: DeclCXX.h:821
void setCtorInitializers(CXXCtorInitializer **Initializers)
Definition: DeclCXX.h:2583
Represents a static or instance method of a struct/union/class.
Definition: DeclCXX.h:2045
Represents a C++ nested name specifier, such as "\::std::vector<int>::".
static bool classofKind(Kind K)
Definition: DeclCXX.h:3840
SourceLocation getIdentLocation() const
Returns the location of this using declaration&#39;s identifier.
Definition: DeclCXX.h:3002
bool isPackExpansion() const
Determine whether this base specifier is a pack expansion.
Definition: DeclCXX.h:254
void setImplicitMoveConstructorIsDeleted()
Set that we attempted to declare an implicit move constructor, but overload resolution failed so we d...
Definition: DeclCXX.h:1075
static bool classofKind(Kind K)
Definition: DeclCXX.h:2232
NestedNameSpecifierLoc getQualifierLoc() const
Retrieve the nested-name-specifier that qualifies the name of the namespace, with source-location inf...
Definition: DeclCXX.h:2969
llvm::function_ref< bool(const CXXRecordDecl *BaseDefinition)> ForallBasesCallback
Function type used by forallBases() as a callback.
Definition: DeclCXX.h:1722
UsingDecl * getCanonicalDecl() override
Retrieves the canonical declaration of this declaration.
Definition: DeclCXX.h:3490
bool isExplicitSpecified() const
Whether this function is marked as explicit explicitly.
Definition: DeclCXX.h:2789
static bool classof(const Decl *D)
Definition: DeclCXX.h:172
RefQualifierKind
The kind of C++11 ref-qualifier associated with a function type.
Definition: Type.h:1379
static bool classof(const Decl *D)
Definition: DeclCXX.h:3232
ConstructorUsingShadowDecl * getConstructedBaseClassShadowDecl() const
Get the inheriting constructor declaration for the base class for which we don&#39;t have an explicit ini...
Definition: DeclCXX.h:3321
void setIsParsingBaseSpecifiers()
Definition: DeclCXX.h:807
static void * getAsVoidPointer(::clang::AnyFunctionDecl F)
Definition: DeclCXX.h:106
bool hasNonTrivialMoveConstructorForCall() const
Definition: DeclCXX.h:1445
void setImplicitDestructorIsDeleted()
Set that we attempted to declare an implicit destructor, but overload resolution failed so we deleted...
Definition: DeclCXX.h:1084
const CXXDestructorDecl * getCanonicalDecl() const
Definition: DeclCXX.h:2743
SourceLocation getMemberLocation() const
Definition: DeclCXX.h:2405
::clang::AnyFunctionDecl getFromVoidPointer(void *P)
Definition: DeclCXX.h:110
Represents a C++11 static_assert declaration.
Definition: DeclCXX.h:3754
SourceLocation getEndLoc() const LLVM_READONLY
Definition: DeclCXX.h:2890
SourceLocation getRBraceLoc() const
Definition: DeclCXX.h:2882
TypeSourceInfo * getTypeSourceInfo() const
Retrieves the type and source location of the base class.
Definition: DeclCXX.h:298
SourceLocation getAccessSpecifierLoc() const
The location of the access specifier.
Definition: DeclCXX.h:148
bool defaultedCopyConstructorIsDeleted() const
true if a defaulted copy constructor for this class would be deleted.
Definition: DeclCXX.h:914
__PTRDIFF_TYPE__ ptrdiff_t
A signed integer type that is the result of subtracting two pointers.
Definition: opencl-c.h:68
int getSourceOrder() const
Return the source position of the initializer, counting from 0.
Definition: DeclCXX.h:2421
bool hasSetter() const
Definition: DeclCXX.h:3942
CXXBaseSpecifier(SourceRange R, bool V, bool BC, AccessSpecifier A, TypeSourceInfo *TInfo, SourceLocation EllipsisLoc)
Definition: DeclCXX.h:229
bool hasInClassInitializer() const
Whether this class has any in-class initializers for non-static data members (including those in anon...
Definition: DeclCXX.h:1293
Defines various enumerations that describe declaration and type specifiers.
DeclarationNameLoc - Additional source/type location info for a declaration name. ...
CXXConstructorDecl * getConstructor() const
Definition: DeclCXX.h:2464
bool hasSimpleDestructor() const
true if we know for sure that this class has an accessible destructor that is not deleted...
Definition: DeclCXX.h:961
TagTypeKind
The kind of a tag type.
Definition: Type.h:4847
static bool isStaticOverloadedOperator(OverloadedOperatorKind OOK)
Returns true if the given operator is implicitly static in a record context.
Definition: DeclCXX.h:2077
bool hasNonTrivialCopyConstructorForCall() const
Definition: DeclCXX.h:1419
Dataflow Directional Tag Classes.
bool isExplicit() const
Whether this function is explicit.
Definition: DeclCXX.h:2591
NestedNameSpecifier * getNestedNameSpecifier() const
Retrieve the nested-name-specifier to which this instance refers.
bool isValid() const
Return true if this is a valid SourceLocation object.
static bool classof(const Decl *D)
Definition: DeclCXX.h:2231
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1264
The base class of all kinds of template declarations (e.g., class, function, etc.).
Definition: DeclTemplate.h:399
OverloadedOperatorKind
Enumeration specifying the different kinds of C++ overloaded operators.
Definition: OperatorKinds.h:22
static AnyFunctionDecl getFromNamedDecl(NamedDecl *ND)
Definition: DeclCXX.h:94
SourceLocation getLocStart() const LLVM_READONLY
Definition: TypeLoc.h:154
SourceRange getSourceRange(const SourceRange &Range)
Returns the SourceRange of a SourceRange.
Definition: FixIt.h:34
base_class_const_range vbases() const
Definition: DeclCXX.h:845
bool hasTrivialDestructorForCall() const
Definition: DeclCXX.h:1486
Reads an AST files chain containing the contents of a translation unit.
Definition: ASTReader.h:354
SourceLocation getBaseTypeLoc() const LLVM_READONLY
Get the location at which the base class type was written.
Definition: DeclCXX.h:242
bool isAccessDeclaration() const
Return true if it is a C++03 access declaration (no &#39;using&#39;).
Definition: DeclCXX.h:3617
Represents a field injected from an anonymous union/struct into the parent scope. ...
Definition: Decl.h:2780
void setUsingLoc(SourceLocation L)
Set the source location of the &#39;using&#39; keyword.
Definition: DeclCXX.h:3614
NestedNameSpecifierLoc getQualifierLoc() const
Retrieve the nested-name-specifier that qualifies the name of the namespace, with source-location inf...
Definition: DeclCXX.h:3092
DeclContext * getCommonAncestor()
Returns the common ancestor context of this using-directive and its nominated namespace.
Definition: DeclCXX.h:2991
llvm::iterator_range< base_class_const_iterator > base_class_const_range
Definition: DeclCXX.h:823
A decomposition declaration.
Definition: DeclCXX.h:3851
bool hasUserDeclaredConstructor() const
Determine whether this class has any user-declared constructors.
Definition: DeclCXX.h:988
IdentifierNamespace
IdentifierNamespace - The different namespaces in which declarations may appear.
Definition: DeclBase.h:115
Represents a dependent using declaration which was marked with typename.
Definition: DeclCXX.h:3675
conversion_iterator conversion_begin() const
Definition: DeclCXX.h:1267
DeclarationName - The name of a declaration.
StmtClass getStmtClass() const
Definition: Stmt.h:391
bool isCXX11StandardLayout() const
Determine whether this class was standard-layout per C++11 [class]p7, specifically using the C++11 ru...
Definition: DeclCXX.h:1356
const CXXRecordDecl * getParent() const
Returns the parent of this method declaration, which is the class in which this method is defined...
Definition: DeclCXX.h:2165
Kind getKind() const
Definition: DeclBase.h:422
NestedNameSpecifierLoc getQualifierLoc() const
Retrieve the nested-name-specifier that qualifies the name, with source-location information.
Definition: DeclCXX.h:3711
DeclarationNameInfo getNameInfo() const
Definition: DeclCXX.h:3718
unsigned shadow_size() const
Return the number of shadowed declarations associated with this using declaration.
Definition: DeclCXX.h:3472
const NamespaceDecl * getNamespace() const
Definition: DeclCXX.h:3108
A mapping from each virtual member function to its set of final overriders.
llvm::iterator_range< redecl_iterator > redecl_range
Definition: Redeclarable.h:291
base_class_const_iterator bases_end() const
Definition: DeclCXX.h:835
base_class_iterator vbases_begin()
Definition: DeclCXX.h:849
TemplateSpecializationKind
Describes the kind of template specialization that a particular template specialization declaration r...
Definition: Specifiers.h:146
void setExternLoc(SourceLocation L)
Definition: DeclCXX.h:2883
bool isUserProvided() const
True if this method is user-declared and was not deleted or defaulted on its first declaration...
Definition: DeclCXX.h:2143
DeclarationNameInfo - A collector data type for bundling together a DeclarationName and the correspnd...
T * get(ExternalASTSource *Source) const
Retrieve the pointer to the AST node that this lazy pointer points to.
specific_decl_iterator - Iterates over a subrange of declarations stored in a DeclContext, providing only those that are of type SpecificDecl (or a class derived from it).
Definition: DeclBase.h:1608
bool hasNonTrivialCopyAssignment() const
Determine whether this class has a non-trivial copy assignment operator (C++ [class.copy]p11, C++11 [class.copy]p25)
Definition: DeclCXX.h:1460
bool isMoveConstructor() const
Determine whether this constructor is a move constructor (C++11 [class.copy]p3), which can be used to...
Definition: DeclCXX.h:2641
const FunctionDecl * getOperatorDelete() const
Definition: DeclCXX.h:2732
bool needsOverloadResolutionForMoveConstructor() const
Determine whether we need to eagerly declare a defaulted move constructor for this class...
Definition: DeclCXX.h:1103
static AccessSpecifier MergeAccess(AccessSpecifier PathAccess, AccessSpecifier DeclAccess)
Calculates the access of a decl that is reached along a path.
Definition: DeclCXX.h:1868
Provides common interface for the Decls that cannot be redeclared, but can be merged if the same decl...
Definition: Redeclarable.h:313
static bool classofKind(Kind K)
Definition: DeclCXX.h:2687
static bool classof(const Decl *D)
Definition: DeclCXX.h:3889
const CXXMethodDecl * getMostRecentDecl() const
Definition: DeclCXX.h:2137
Represents a C++ base or member initializer.
Definition: DeclCXX.h:2252
bool isParsingBaseSpecifiers() const
Definition: DeclCXX.h:809
LanguageIDs
Represents the language in a linkage specification.
Definition: DeclCXX.h:2833
bool needsOverloadResolutionForMoveAssignment() const
Determine whether we need to eagerly declare a move assignment operator for this class.
Definition: DeclCXX.h:1180
IndirectFieldDecl * getIndirectMember() const
Definition: DeclCXX.h:2399
friend TrailingObjects
Definition: OpenMPClause.h:93
static bool classofKind(Kind K)
Definition: DeclCXX.h:3792
base_class_const_iterator vbases_begin() const
Definition: DeclCXX.h:850
static LinkageSpecDecl * castFromDeclContext(const DeclContext *DC)
Definition: DeclCXX.h:2909
static UsingShadowDecl * Create(ASTContext &C, DeclContext *DC, SourceLocation Loc, UsingDecl *Using, NamedDecl *Target)
Definition: DeclCXX.h:3182
const DeclContext * getCommonAncestor() const
Definition: DeclCXX.h:2992
AnyFunctionDecl(FunctionDecl *FD)
Definition: DeclCXX.h:84
Represents a base class of a C++ class.
Definition: DeclCXX.h:192
bool hasTypename() const
Return true if the using declaration has &#39;typename&#39;.
Definition: DeclCXX.h:3415
static bool classofKind(Kind K)
Definition: DeclCXX.h:1977
SourceLocation getEndLoc() const LLVM_READONLY
Definition: DeclCXX.h:239
bool needsImplicitCopyConstructor() const
Determine whether this class needs an implicit copy constructor to be lazily declared.
Definition: DeclCXX.h:1007
TypeLoc getTypeLoc() const
Return the TypeLoc wrapper for the type source info.
Definition: TypeLoc.h:239
X
Add a minimal nested name specifier fixit hint to allow lookup of a tag name from an outer enclosing ...
Definition: SemaDecl.cpp:13820
bool hasMutableFields() const
Determine whether this class, or any of its class subobjects, contains a mutable field.
Definition: DeclCXX.h:1360
shadow_range shadows() const
Definition: DeclCXX.h:3460
static bool classofKind(Kind K)
Definition: DeclCXX.h:173
Defines the clang::SourceLocation class and associated facilities.
void setImplicitMoveAssignmentIsDeleted()
Set that we attempted to declare an implicit move assignment operator, but overload resolution failed...
Definition: DeclCXX.h:1156
QualType getUnqualifiedType() const
Retrieve the unqualified variant of the given type, removing as little sugar as possible.
Definition: Type.h:5969
Represents a C++ struct/union/class.
Definition: DeclCXX.h:302
void setBinding(QualType DeclaredType, Expr *Binding)
Set the binding for this BindingDecl, along with its declared type (which should be a possibly-cv-qua...
Definition: DeclCXX.h:3834
bool hasUserDeclaredMoveConstructor() const
Determine whether this class has had a move constructor declared by the user.
Definition: DeclCXX.h:1054
bool hasSimpleMoveAssignment() const
true if we know for sure that this class has a single, accessible, unambiguous move assignment operat...
Definition: DeclCXX.h:954
static bool classof(const Decl *D)
Definition: DeclCXX.h:2686
SourceLocation getEllipsisLoc() const
For a pack expansion, determine the location of the ellipsis.
Definition: DeclCXX.h:265
UsingShadowDecl * getNextUsingShadowDecl() const
The next using shadow declaration contained in the shadow decl chain of the using declaration which i...
Definition: DeclCXX.h:3228
An object for streaming information to a record.
Definition: ASTWriter.h:746
static bool classofKind(Kind K)
Definition: DeclCXX.h:3565
Provides information a specialization of a member of a class template, which may be a member function...
Definition: DeclTemplate.h:608
LambdaCaptureDefault getLambdaCaptureDefault() const
Definition: DeclCXX.h:1229
bool isDependentLambda() const
Determine whether this lambda expression was known to be dependent at the time it was created...
Definition: DeclCXX.h:1964
base_class_iterator bases_end()
Definition: DeclCXX.h:834
friend bool operator==(shadow_iterator x, shadow_iterator y)
Definition: DeclCXX.h:3450
shadow_iterator & operator++()
Definition: DeclCXX.h:3439
bool isFailed() const
Definition: DeclCXX.h:3783
Declaration of a class template.
Writes an AST file containing the contents of a translation unit.
Definition: ASTWriter.h:103
bool hasInheritedAssignment() const
Determine whether this class has a using-declaration that names a base class assignment operator...
Definition: DeclCXX.h:1536
bool isOffset() const
Whether this pointer is currently stored as an offset.
StringLiteral - This represents a string literal expression, e.g.
Definition: Expr.h:1585
Kind
Lists the kind of concrete classes of Decl.
Definition: DeclBase.h:89
NestedNameSpecifier * getQualifier() const
Retrieve the nested-name-specifier that qualifies the name.
Definition: DeclCXX.h:3403
SourceLocation getEllipsisLoc() const
Get the location of the ellipsis if this is a pack expansion.
Definition: DeclCXX.h:3728
bool constructsVirtualBase() const
Returns true if the constructed base class is a virtual base class subobject of this declaration&#39;s cl...
Definition: DeclCXX.h:3340
Expr * getBinding() const
Get the expression to which this declaration is bound.
Definition: DeclCXX.h:3825
static bool classof(const Decl *D)
Definition: DeclCXX.h:3938
SourceLocation getUsingLoc() const
Returns the source location of the &#39;using&#39; keyword.
Definition: DeclCXX.h:3704
bool implicitCopyConstructorHasConstParam() const
Determine whether an implicit copy constructor for this type would have a parameter with a const-qual...
Definition: DeclCXX.h:1028
ASTContext::overridden_method_range overridden_method_range
Definition: DeclCXX.h:2159
BasePaths - Represents the set of paths from a derived class to one of its (direct or indirect) bases...
capture_const_iterator captures_begin() const
Definition: DeclCXX.h:1256
bool needsImplicitMoveConstructor() const
Determine whether this class should get an implicit move constructor or if any existing special membe...
Definition: DeclCXX.h:1093
bool hasDirectFields() const
Determine whether this class has direct non-static data members.
Definition: DeclCXX.h:1334
An instance of this class represents the declaration of a property member.
Definition: DeclCXX.h:3920
SourceLocation getNamespaceLoc() const
Returns the location of the namespace keyword.
Definition: DeclCXX.h:3117
AccessSpecifier getAccessSpecifierAsWritten() const
Retrieves the access specifier as written in the source code (which may mean that no access specifier...
Definition: DeclCXX.h:286
shadow_iterator operator++(int)
Definition: DeclCXX.h:3444
NamedDecl * get() const
Retrieve the underlying function or function template.
Definition: DeclCXX.h:92
A trivial tuple used to represent a source range.
static bool classofKind(Kind K)
Definition: DeclCXX.h:2814
FunctionDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: Decl.cpp:2899
static bool classofKind(Kind K)
Definition: DeclCXX.h:2038
This represents a decl that may have a name.
Definition: Decl.h:248
bool hasCopyConstructorWithConstParam() const
Determine whether this class has a copy constructor with a parameter type which is a reference to a c...
Definition: DeclCXX.h:1036
static DeclarationName getUsingDirectiveName()
getUsingDirectiveName - Return name for all using-directives.
redeclarable_base::redecl_iterator redecl_iterator
Definition: DeclCXX.h:3191
Represents a C++ namespace alias.
Definition: DeclCXX.h:3028
SourceRange getSourceRange() const LLVM_READONLY
Retrieves the source range that contains the entire base specifier.
Definition: DeclCXX.h:235
ArrayRef< NamedDecl * > expansions() const
Get the set of using declarations that this pack expanded into.
Definition: DeclCXX.h:3546
Represents C++ using-directive.
Definition: DeclCXX.h:2924
bool isAggregate() const
Determine whether this class is an aggregate (C++ [dcl.init.aggr]), which is a class with no user-dec...
Definition: DeclCXX.h:1288
ctor_range ctors() const
Definition: DeclCXX.h:887
SourceLocation getBegin() const
SourceLocation ColonLoc
Location of &#39;:&#39;.
Definition: OpenMPClause.h:102
TemplateDecl * getDeducedTemplate() const
Get the template for which this guide performs deduction.
Definition: DeclCXX.h:2026
bool hasDefaultConstructor() const
Determine whether this class has any default constructors.
Definition: DeclCXX.h:967
ctor_iterator ctor_begin() const
Definition: DeclCXX.h:889
base_class_range vbases()
Definition: DeclCXX.h:842
Declaration of a template function.
Definition: DeclTemplate.h:968
void setTargetDecl(NamedDecl *ND)
Sets the underlying declaration which has been brought into the local scope.
Definition: DeclCXX.h:3213
SourceLocation getLocation() const
Definition: DeclBase.h:419
Represents a shadow declaration introduced into a scope by a (resolved) using declaration.
Definition: DeclCXX.h:3147
Represents a pack of using declarations that a single using-declarator pack-expanded into...
Definition: DeclCXX.h:3510
QualType getType() const
Return the type wrapped by this type source info.
Definition: Decl.h:97
static bool isProvablyNotDerivedFrom(Sema &SemaRef, CXXRecordDecl *Record, const BaseSet &Bases)
Determines if the given class is provably not derived from all of the prospective base classes...
const UsingShadowDecl * getCanonicalDecl() const
Definition: DeclCXX.h:3203
ConstructorUsingShadowDecl * getShadowDecl() const
Definition: DeclCXX.h:2463
Defines the LambdaCapture class.
NamedDecl * getAliasedNamespace() const
Retrieve the namespace that this alias refers to, which may either be a NamespaceDecl or a NamespaceA...
Definition: DeclCXX.h:3124
SourceRange getSourceRange() const override LLVM_READONLY
Source range that this declaration covers.
Definition: DeclCXX.h:159
CXXRecordDecl * getParent()
Definition: DeclCXX.h:3307
static OMPLinearClause * Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, OpenMPLinearClauseKind Modifier, SourceLocation ModifierLoc, SourceLocation ColonLoc, SourceLocation EndLoc, ArrayRef< Expr *> VL, ArrayRef< Expr *> PL, ArrayRef< Expr *> IL, Expr *Step, Expr *CalcStep, Stmt *PreInit, Expr *PostUpdate)
Creates clause with a list of variables VL and a linear step Step.
bool isInheritingConstructor() const
Determine whether this is an implicit constructor synthesized to model a call to a constructor inheri...
Definition: DeclCXX.h:2670
method_range methods() const
Definition: DeclCXX.h:867
QualType getType() const
Retrieves the type of the base class.
Definition: DeclCXX.h:293
bool defaultedDestructorIsDeleted() const
true if a defaulted destructor for this class would be deleted.
Definition: DeclCXX.h:931