1 //===- DeclCXX.cpp - C++ Declaration AST Node Implementation --------------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file implements the C++ related Decl classes.
11 //===----------------------------------------------------------------------===//
13 #include "clang/AST/DeclCXX.h"
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/ASTLambda.h"
16 #include "clang/AST/ASTMutationListener.h"
17 #include "clang/AST/ASTUnresolvedSet.h"
18 #include "clang/AST/CXXInheritance.h"
19 #include "clang/AST/DeclBase.h"
20 #include "clang/AST/DeclTemplate.h"
21 #include "clang/AST/DeclarationName.h"
22 #include "clang/AST/Expr.h"
23 #include "clang/AST/ExprCXX.h"
24 #include "clang/AST/LambdaCapture.h"
25 #include "clang/AST/NestedNameSpecifier.h"
26 #include "clang/AST/ODRHash.h"
27 #include "clang/AST/Type.h"
28 #include "clang/AST/TypeLoc.h"
29 #include "clang/AST/UnresolvedSet.h"
30 #include "clang/Basic/Diagnostic.h"
31 #include "clang/Basic/IdentifierTable.h"
32 #include "clang/Basic/LLVM.h"
33 #include "clang/Basic/LangOptions.h"
34 #include "clang/Basic/OperatorKinds.h"
35 #include "clang/Basic/PartialDiagnostic.h"
36 #include "clang/Basic/SourceLocation.h"
37 #include "clang/Basic/Specifiers.h"
38 #include "llvm/ADT/None.h"
39 #include "llvm/ADT/SmallPtrSet.h"
40 #include "llvm/ADT/SmallVector.h"
41 #include "llvm/ADT/iterator_range.h"
42 #include "llvm/Support/Casting.h"
43 #include "llvm/Support/ErrorHandling.h"
44 #include "llvm/Support/raw_ostream.h"
50 using namespace clang;
52 //===----------------------------------------------------------------------===//
53 // Decl Allocation/Deallocation Method Implementations
54 //===----------------------------------------------------------------------===//
56 void AccessSpecDecl::anchor() {}
58 AccessSpecDecl *AccessSpecDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
59 return new (C, ID) AccessSpecDecl(EmptyShell());
62 void LazyASTUnresolvedSet::getFromExternalSource(ASTContext &C) const {
63 ExternalASTSource *Source = C.getExternalSource();
64 assert(Impl.Decls.isLazy() && "getFromExternalSource for non-lazy set");
65 assert(Source && "getFromExternalSource with no external source");
67 for (ASTUnresolvedSet::iterator I = Impl.begin(); I != Impl.end(); ++I)
68 I.setDecl(cast<NamedDecl>(Source->GetExternalDecl(
69 reinterpret_cast<uintptr_t>(I.getDecl()) >> 2)));
70 Impl.Decls.setLazy(false);
73 CXXRecordDecl::DefinitionData::DefinitionData(CXXRecordDecl *D)
74 : UserDeclaredConstructor(false), UserDeclaredSpecialMembers(0),
75 Aggregate(true), PlainOldData(true), Empty(true), Polymorphic(false),
76 Abstract(false), IsStandardLayout(true), IsCXX11StandardLayout(true),
77 HasBasesWithFields(false), HasBasesWithNonStaticDataMembers(false),
78 HasPrivateFields(false), HasProtectedFields(false),
79 HasPublicFields(false), HasMutableFields(false), HasVariantMembers(false),
80 HasOnlyCMembers(true), HasInClassInitializer(false),
81 HasUninitializedReferenceMember(false), HasUninitializedFields(false),
82 HasInheritedConstructor(false), HasInheritedAssignment(false),
83 NeedOverloadResolutionForCopyConstructor(false),
84 NeedOverloadResolutionForMoveConstructor(false),
85 NeedOverloadResolutionForMoveAssignment(false),
86 NeedOverloadResolutionForDestructor(false),
87 DefaultedCopyConstructorIsDeleted(false),
88 DefaultedMoveConstructorIsDeleted(false),
89 DefaultedMoveAssignmentIsDeleted(false),
90 DefaultedDestructorIsDeleted(false), HasTrivialSpecialMembers(SMF_All),
91 HasTrivialSpecialMembersForCall(SMF_All),
92 DeclaredNonTrivialSpecialMembers(0),
93 DeclaredNonTrivialSpecialMembersForCall(0), HasIrrelevantDestructor(true),
94 HasConstexprNonCopyMoveConstructor(false),
95 HasDefaultedDefaultConstructor(false),
96 DefaultedDefaultConstructorIsConstexpr(true),
97 HasConstexprDefaultConstructor(false),
98 HasNonLiteralTypeFieldsOrBases(false), ComputedVisibleConversions(false),
99 UserProvidedDefaultConstructor(false), DeclaredSpecialMembers(0),
100 ImplicitCopyConstructorCanHaveConstParamForVBase(true),
101 ImplicitCopyConstructorCanHaveConstParamForNonVBase(true),
102 ImplicitCopyAssignmentHasConstParam(true),
103 HasDeclaredCopyConstructorWithConstParam(false),
104 HasDeclaredCopyAssignmentWithConstParam(false), IsLambda(false),
105 IsParsingBaseSpecifiers(false), HasODRHash(false), Definition(D) {}
107 CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getBasesSlowCase() const {
108 return Bases.get(Definition->getASTContext().getExternalSource());
111 CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getVBasesSlowCase() const {
112 return VBases.get(Definition->getASTContext().getExternalSource());
115 CXXRecordDecl::CXXRecordDecl(Kind K, TagKind TK, const ASTContext &C,
116 DeclContext *DC, SourceLocation StartLoc,
117 SourceLocation IdLoc, IdentifierInfo *Id,
118 CXXRecordDecl *PrevDecl)
119 : RecordDecl(K, TK, C, DC, StartLoc, IdLoc, Id, PrevDecl),
120 DefinitionData(PrevDecl ? PrevDecl->DefinitionData
123 CXXRecordDecl *CXXRecordDecl::Create(const ASTContext &C, TagKind TK,
124 DeclContext *DC, SourceLocation StartLoc,
125 SourceLocation IdLoc, IdentifierInfo *Id,
126 CXXRecordDecl *PrevDecl,
127 bool DelayTypeCreation) {
128 auto *R = new (C, DC) CXXRecordDecl(CXXRecord, TK, C, DC, StartLoc, IdLoc, Id,
130 R->setMayHaveOutOfDateDef(C.getLangOpts().Modules);
132 // FIXME: DelayTypeCreation seems like such a hack
133 if (!DelayTypeCreation)
134 C.getTypeDeclType(R, PrevDecl);
139 CXXRecordDecl::CreateLambda(const ASTContext &C, DeclContext *DC,
140 TypeSourceInfo *Info, SourceLocation Loc,
141 bool Dependent, bool IsGeneric,
142 LambdaCaptureDefault CaptureDefault) {
143 auto *R = new (C, DC) CXXRecordDecl(CXXRecord, TTK_Class, C, DC, Loc, Loc,
145 R->setBeingDefined(true);
147 new (C) struct LambdaDefinitionData(R, Info, Dependent, IsGeneric,
149 R->setMayHaveOutOfDateDef(false);
150 R->setImplicit(true);
151 C.getTypeDeclType(R, /*PrevDecl=*/nullptr);
156 CXXRecordDecl::CreateDeserialized(const ASTContext &C, unsigned ID) {
157 auto *R = new (C, ID) CXXRecordDecl(
158 CXXRecord, TTK_Struct, C, nullptr, SourceLocation(), SourceLocation(),
160 R->setMayHaveOutOfDateDef(false);
164 /// Determine whether a class has a repeated base class. This is intended for
165 /// use when determining if a class is standard-layout, so makes no attempt to
166 /// handle virtual bases.
167 static bool hasRepeatedBaseClass(const CXXRecordDecl *StartRD) {
168 llvm::SmallPtrSet<const CXXRecordDecl*, 8> SeenBaseTypes;
169 SmallVector<const CXXRecordDecl*, 8> WorkList = {StartRD};
170 while (!WorkList.empty()) {
171 const CXXRecordDecl *RD = WorkList.pop_back_val();
172 for (const CXXBaseSpecifier &BaseSpec : RD->bases()) {
173 if (const CXXRecordDecl *B = BaseSpec.getType()->getAsCXXRecordDecl()) {
174 if (!SeenBaseTypes.insert(B).second)
176 WorkList.push_back(B);
184 CXXRecordDecl::setBases(CXXBaseSpecifier const * const *Bases,
186 ASTContext &C = getASTContext();
188 if (!data().Bases.isOffset() && data().NumBases > 0)
189 C.Deallocate(data().getBases());
192 if (!C.getLangOpts().CPlusPlus17) {
193 // C++ [dcl.init.aggr]p1:
194 // An aggregate is [...] a class with [...] no base classes [...].
195 data().Aggregate = false;
199 // A POD-struct is an aggregate class...
200 data().PlainOldData = false;
203 // The set of seen virtual base types.
204 llvm::SmallPtrSet<CanQualType, 8> SeenVBaseTypes;
206 // The virtual bases of this class.
207 SmallVector<const CXXBaseSpecifier *, 8> VBases;
209 data().Bases = new(C) CXXBaseSpecifier [NumBases];
210 data().NumBases = NumBases;
211 for (unsigned i = 0; i < NumBases; ++i) {
212 data().getBases()[i] = *Bases[i];
213 // Keep track of inherited vbases for this base class.
214 const CXXBaseSpecifier *Base = Bases[i];
215 QualType BaseType = Base->getType();
216 // Skip dependent types; we can't do any checking on them now.
217 if (BaseType->isDependentType())
219 auto *BaseClassDecl =
220 cast<CXXRecordDecl>(BaseType->getAs<RecordType>()->getDecl());
223 // A standard-layout class is a class that:
225 // -- has all non-static data members and bit-fields in the class and
226 // its base classes first declared in the same class
227 if (BaseClassDecl->data().HasBasesWithFields ||
228 !BaseClassDecl->field_empty()) {
229 if (data().HasBasesWithFields)
230 // Two bases have members or bit-fields: not standard-layout.
231 data().IsStandardLayout = false;
232 data().HasBasesWithFields = true;
236 // A standard-layout class is a class that:
237 // -- [...] has [...] at most one base class with non-static data
239 if (BaseClassDecl->data().HasBasesWithNonStaticDataMembers ||
240 BaseClassDecl->hasDirectFields()) {
241 if (data().HasBasesWithNonStaticDataMembers)
242 data().IsCXX11StandardLayout = false;
243 data().HasBasesWithNonStaticDataMembers = true;
246 if (!BaseClassDecl->isEmpty()) {
247 // C++14 [meta.unary.prop]p4:
248 // T is a class type [...] with [...] no base class B for which
249 // is_empty<B>::value is false.
250 data().Empty = false;
253 // C++1z [dcl.init.agg]p1:
254 // An aggregate is a class with [...] no private or protected base classes
255 if (Base->getAccessSpecifier() != AS_public)
256 data().Aggregate = false;
258 // C++ [class.virtual]p1:
259 // A class that declares or inherits a virtual function is called a
260 // polymorphic class.
261 if (BaseClassDecl->isPolymorphic()) {
262 data().Polymorphic = true;
264 // An aggregate is a class with [...] no virtual functions.
265 data().Aggregate = false;
269 // A standard-layout class is a class that: [...]
270 // -- has no non-standard-layout base classes
271 if (!BaseClassDecl->isStandardLayout())
272 data().IsStandardLayout = false;
273 if (!BaseClassDecl->isCXX11StandardLayout())
274 data().IsCXX11StandardLayout = false;
276 // Record if this base is the first non-literal field or base.
277 if (!hasNonLiteralTypeFieldsOrBases() && !BaseType->isLiteralType(C))
278 data().HasNonLiteralTypeFieldsOrBases = true;
280 // Now go through all virtual bases of this base and add them.
281 for (const auto &VBase : BaseClassDecl->vbases()) {
282 // Add this base if it's not already in the list.
283 if (SeenVBaseTypes.insert(C.getCanonicalType(VBase.getType())).second) {
284 VBases.push_back(&VBase);
286 // C++11 [class.copy]p8:
287 // The implicitly-declared copy constructor for a class X will have
288 // the form 'X::X(const X&)' if each [...] virtual base class B of X
289 // has a copy constructor whose first parameter is of type
290 // 'const B&' or 'const volatile B&' [...]
291 if (CXXRecordDecl *VBaseDecl = VBase.getType()->getAsCXXRecordDecl())
292 if (!VBaseDecl->hasCopyConstructorWithConstParam())
293 data().ImplicitCopyConstructorCanHaveConstParamForVBase = false;
295 // C++1z [dcl.init.agg]p1:
296 // An aggregate is a class with [...] no virtual base classes
297 data().Aggregate = false;
301 if (Base->isVirtual()) {
302 // Add this base if it's not already in the list.
303 if (SeenVBaseTypes.insert(C.getCanonicalType(BaseType)).second)
304 VBases.push_back(Base);
306 // C++14 [meta.unary.prop] is_empty:
307 // T is a class type, but not a union type, with ... no virtual base
309 data().Empty = false;
311 // C++1z [dcl.init.agg]p1:
312 // An aggregate is a class with [...] no virtual base classes
313 data().Aggregate = false;
315 // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25:
316 // A [default constructor, copy/move constructor, or copy/move assignment
317 // operator for a class X] is trivial [...] if:
318 // -- class X has [...] no virtual base classes
319 data().HasTrivialSpecialMembers &= SMF_Destructor;
320 data().HasTrivialSpecialMembersForCall &= SMF_Destructor;
323 // A standard-layout class is a class that: [...]
324 // -- has [...] no virtual base classes
325 data().IsStandardLayout = false;
326 data().IsCXX11StandardLayout = false;
328 // C++11 [dcl.constexpr]p4:
329 // In the definition of a constexpr constructor [...]
330 // -- the class shall not have any virtual base classes
331 data().DefaultedDefaultConstructorIsConstexpr = false;
333 // C++1z [class.copy]p8:
334 // The implicitly-declared copy constructor for a class X will have
335 // the form 'X::X(const X&)' if each potentially constructed subobject
336 // has a copy constructor whose first parameter is of type
337 // 'const B&' or 'const volatile B&' [...]
338 if (!BaseClassDecl->hasCopyConstructorWithConstParam())
339 data().ImplicitCopyConstructorCanHaveConstParamForVBase = false;
341 // C++ [class.ctor]p5:
342 // A default constructor is trivial [...] if:
343 // -- all the direct base classes of its class have trivial default
345 if (!BaseClassDecl->hasTrivialDefaultConstructor())
346 data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor;
348 // C++0x [class.copy]p13:
349 // A copy/move constructor for class X is trivial if [...]
351 // -- the constructor selected to copy/move each direct base class
352 // subobject is trivial, and
353 if (!BaseClassDecl->hasTrivialCopyConstructor())
354 data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor;
356 if (!BaseClassDecl->hasTrivialCopyConstructorForCall())
357 data().HasTrivialSpecialMembersForCall &= ~SMF_CopyConstructor;
359 // If the base class doesn't have a simple move constructor, we'll eagerly
360 // declare it and perform overload resolution to determine which function
361 // it actually calls. If it does have a simple move constructor, this
363 if (!BaseClassDecl->hasTrivialMoveConstructor())
364 data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor;
366 if (!BaseClassDecl->hasTrivialMoveConstructorForCall())
367 data().HasTrivialSpecialMembersForCall &= ~SMF_MoveConstructor;
369 // C++0x [class.copy]p27:
370 // A copy/move assignment operator for class X is trivial if [...]
372 // -- the assignment operator selected to copy/move each direct base
373 // class subobject is trivial, and
374 if (!BaseClassDecl->hasTrivialCopyAssignment())
375 data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment;
376 // If the base class doesn't have a simple move assignment, we'll eagerly
377 // declare it and perform overload resolution to determine which function
378 // it actually calls. If it does have a simple move assignment, this
380 if (!BaseClassDecl->hasTrivialMoveAssignment())
381 data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment;
383 // C++11 [class.ctor]p6:
384 // If that user-written default constructor would satisfy the
385 // requirements of a constexpr constructor, the implicitly-defined
386 // default constructor is constexpr.
387 if (!BaseClassDecl->hasConstexprDefaultConstructor())
388 data().DefaultedDefaultConstructorIsConstexpr = false;
390 // C++1z [class.copy]p8:
391 // The implicitly-declared copy constructor for a class X will have
392 // the form 'X::X(const X&)' if each potentially constructed subobject
393 // has a copy constructor whose first parameter is of type
394 // 'const B&' or 'const volatile B&' [...]
395 if (!BaseClassDecl->hasCopyConstructorWithConstParam())
396 data().ImplicitCopyConstructorCanHaveConstParamForNonVBase = false;
399 // C++ [class.ctor]p3:
400 // A destructor is trivial if all the direct base classes of its class
401 // have trivial destructors.
402 if (!BaseClassDecl->hasTrivialDestructor())
403 data().HasTrivialSpecialMembers &= ~SMF_Destructor;
405 if (!BaseClassDecl->hasTrivialDestructorForCall())
406 data().HasTrivialSpecialMembersForCall &= ~SMF_Destructor;
408 if (!BaseClassDecl->hasIrrelevantDestructor())
409 data().HasIrrelevantDestructor = false;
411 // C++11 [class.copy]p18:
412 // The implicitly-declared copy assignment oeprator for a class X will
413 // have the form 'X& X::operator=(const X&)' if each direct base class B
414 // of X has a copy assignment operator whose parameter is of type 'const
415 // B&', 'const volatile B&', or 'B' [...]
416 if (!BaseClassDecl->hasCopyAssignmentWithConstParam())
417 data().ImplicitCopyAssignmentHasConstParam = false;
419 // A class has an Objective-C object member if... or any of its bases
420 // has an Objective-C object member.
421 if (BaseClassDecl->hasObjectMember())
422 setHasObjectMember(true);
424 if (BaseClassDecl->hasVolatileMember())
425 setHasVolatileMember(true);
427 if (BaseClassDecl->getArgPassingRestrictions() ==
428 RecordDecl::APK_CanNeverPassInRegs)
429 setArgPassingRestrictions(RecordDecl::APK_CanNeverPassInRegs);
431 // Keep track of the presence of mutable fields.
432 if (BaseClassDecl->hasMutableFields()) {
433 data().HasMutableFields = true;
434 data().NeedOverloadResolutionForCopyConstructor = true;
437 if (BaseClassDecl->hasUninitializedReferenceMember())
438 data().HasUninitializedReferenceMember = true;
440 if (!BaseClassDecl->allowConstDefaultInit())
441 data().HasUninitializedFields = true;
443 addedClassSubobject(BaseClassDecl);
447 // A class S is a standard-layout class if it:
448 // -- has at most one base class subobject of any given type
450 // Note that we only need to check this for classes with more than one base
451 // class. If there's only one base class, and it's standard layout, then
452 // we know there are no repeated base classes.
453 if (data().IsStandardLayout && NumBases > 1 && hasRepeatedBaseClass(this))
454 data().IsStandardLayout = false;
456 if (VBases.empty()) {
457 data().IsParsingBaseSpecifiers = false;
461 // Create base specifier for any direct or indirect virtual bases.
462 data().VBases = new (C) CXXBaseSpecifier[VBases.size()];
463 data().NumVBases = VBases.size();
464 for (int I = 0, E = VBases.size(); I != E; ++I) {
465 QualType Type = VBases[I]->getType();
466 if (!Type->isDependentType())
467 addedClassSubobject(Type->getAsCXXRecordDecl());
468 data().getVBases()[I] = *VBases[I];
471 data().IsParsingBaseSpecifiers = false;
474 unsigned CXXRecordDecl::getODRHash() const {
475 assert(hasDefinition() && "ODRHash only for records with definitions");
477 // Previously calculated hash is stored in DefinitionData.
478 if (DefinitionData->HasODRHash)
479 return DefinitionData->ODRHash;
481 // Only calculate hash on first call of getODRHash per record.
483 Hash.AddCXXRecordDecl(getDefinition());
484 DefinitionData->HasODRHash = true;
485 DefinitionData->ODRHash = Hash.CalculateHash();
487 return DefinitionData->ODRHash;
490 void CXXRecordDecl::addedClassSubobject(CXXRecordDecl *Subobj) {
491 // C++11 [class.copy]p11:
492 // A defaulted copy/move constructor for a class X is defined as
494 // -- a direct or virtual base class B that cannot be copied/moved [...]
495 // -- a non-static data member of class type M (or array thereof)
496 // that cannot be copied or moved [...]
497 if (!Subobj->hasSimpleCopyConstructor())
498 data().NeedOverloadResolutionForCopyConstructor = true;
499 if (!Subobj->hasSimpleMoveConstructor())
500 data().NeedOverloadResolutionForMoveConstructor = true;
502 // C++11 [class.copy]p23:
503 // A defaulted copy/move assignment operator for a class X is defined as
505 // -- a direct or virtual base class B that cannot be copied/moved [...]
506 // -- a non-static data member of class type M (or array thereof)
507 // that cannot be copied or moved [...]
508 if (!Subobj->hasSimpleMoveAssignment())
509 data().NeedOverloadResolutionForMoveAssignment = true;
511 // C++11 [class.ctor]p5, C++11 [class.copy]p11, C++11 [class.dtor]p5:
512 // A defaulted [ctor or dtor] for a class X is defined as
514 // -- any direct or virtual base class [...] has a type with a destructor
515 // that is deleted or inaccessible from the defaulted [ctor or dtor].
516 // -- any non-static data member has a type with a destructor
517 // that is deleted or inaccessible from the defaulted [ctor or dtor].
518 if (!Subobj->hasSimpleDestructor()) {
519 data().NeedOverloadResolutionForCopyConstructor = true;
520 data().NeedOverloadResolutionForMoveConstructor = true;
521 data().NeedOverloadResolutionForDestructor = true;
525 bool CXXRecordDecl::hasAnyDependentBases() const {
526 if (!isDependentContext())
529 return !forallBases([](const CXXRecordDecl *) { return true; });
532 bool CXXRecordDecl::isTriviallyCopyable() const {
534 // A trivially copyable class is a class that:
535 // -- has no non-trivial copy constructors,
536 if (hasNonTrivialCopyConstructor()) return false;
537 // -- has no non-trivial move constructors,
538 if (hasNonTrivialMoveConstructor()) return false;
539 // -- has no non-trivial copy assignment operators,
540 if (hasNonTrivialCopyAssignment()) return false;
541 // -- has no non-trivial move assignment operators, and
542 if (hasNonTrivialMoveAssignment()) return false;
543 // -- has a trivial destructor.
544 if (!hasTrivialDestructor()) return false;
549 void CXXRecordDecl::markedVirtualFunctionPure() {
550 // C++ [class.abstract]p2:
551 // A class is abstract if it has at least one pure virtual function.
552 data().Abstract = true;
555 bool CXXRecordDecl::hasSubobjectAtOffsetZeroOfEmptyBaseType(
556 ASTContext &Ctx, const CXXRecordDecl *XFirst) {
560 llvm::SmallPtrSet<const CXXRecordDecl*, 8> Bases;
561 llvm::SmallPtrSet<const CXXRecordDecl*, 8> M;
562 SmallVector<const CXXRecordDecl*, 8> WorkList;
564 // Visit a type that we have determined is an element of M(S).
565 auto Visit = [&](const CXXRecordDecl *RD) -> bool {
566 RD = RD->getCanonicalDecl();
569 // A class S is a standard-layout class if it [...] has no element of the
570 // set M(S) of types as a base class.
572 // If we find a subobject of an empty type, it might also be a base class,
573 // so we'll need to walk the base classes to check.
574 if (!RD->data().HasBasesWithFields) {
575 // Walk the bases the first time, stopping if we find the type. Build a
576 // set of them so we don't need to walk them again.
578 bool RDIsBase = !forallBases([&](const CXXRecordDecl *Base) -> bool {
579 Base = Base->getCanonicalDecl();
593 if (M.insert(RD).second)
594 WorkList.push_back(RD);
601 while (!WorkList.empty()) {
602 const CXXRecordDecl *X = WorkList.pop_back_val();
604 // FIXME: We don't check the bases of X. That matches the standard, but
605 // that sure looks like a wording bug.
607 // -- If X is a non-union class type with a non-static data member
608 // [recurse to each field] that is either of zero size or is the
609 // first non-static data member of X
610 // -- If X is a union type, [recurse to union members]
611 bool IsFirstField = true;
612 for (auto *FD : X->fields()) {
613 // FIXME: Should we really care about the type of the first non-static
614 // data member of a non-union if there are preceding unnamed bit-fields?
615 if (FD->isUnnamedBitfield())
618 if (!IsFirstField && !FD->isZeroSize(Ctx))
621 // -- If X is n array type, [visit the element type]
622 QualType T = Ctx.getBaseElementType(FD->getType());
623 if (auto *RD = T->getAsCXXRecordDecl())
628 IsFirstField = false;
635 bool CXXRecordDecl::lambdaIsDefaultConstructibleAndAssignable() const {
636 assert(isLambda() && "not a lambda");
638 // C++2a [expr.prim.lambda.capture]p11:
639 // The closure type associated with a lambda-expression has no default
640 // constructor if the lambda-expression has a lambda-capture and a
641 // defaulted default constructor otherwise. It has a deleted copy
642 // assignment operator if the lambda-expression has a lambda-capture and
643 // defaulted copy and move assignment operators otherwise.
645 // C++17 [expr.prim.lambda]p21:
646 // The closure type associated with a lambda-expression has no default
647 // constructor and a deleted copy assignment operator.
648 if (getLambdaCaptureDefault() != LCD_None ||
649 getLambdaData().NumCaptures != 0)
651 return getASTContext().getLangOpts().CPlusPlus2a;
654 void CXXRecordDecl::addedMember(Decl *D) {
655 if (!D->isImplicit() &&
656 !isa<FieldDecl>(D) &&
657 !isa<IndirectFieldDecl>(D) &&
658 (!isa<TagDecl>(D) || cast<TagDecl>(D)->getTagKind() == TTK_Class ||
659 cast<TagDecl>(D)->getTagKind() == TTK_Interface))
660 data().HasOnlyCMembers = false;
662 // Ignore friends and invalid declarations.
663 if (D->getFriendObjectKind() || D->isInvalidDecl())
666 auto *FunTmpl = dyn_cast<FunctionTemplateDecl>(D);
668 D = FunTmpl->getTemplatedDecl();
670 // FIXME: Pass NamedDecl* to addedMember?
671 Decl *DUnderlying = D;
672 if (auto *ND = dyn_cast<NamedDecl>(DUnderlying)) {
673 DUnderlying = ND->getUnderlyingDecl();
674 if (auto *UnderlyingFunTmpl = dyn_cast<FunctionTemplateDecl>(DUnderlying))
675 DUnderlying = UnderlyingFunTmpl->getTemplatedDecl();
678 if (const auto *Method = dyn_cast<CXXMethodDecl>(D)) {
679 if (Method->isVirtual()) {
680 // C++ [dcl.init.aggr]p1:
681 // An aggregate is an array or a class with [...] no virtual functions.
682 data().Aggregate = false;
685 // A POD-struct is an aggregate class...
686 data().PlainOldData = false;
688 // C++14 [meta.unary.prop]p4:
689 // T is a class type [...] with [...] no virtual member functions...
690 data().Empty = false;
692 // C++ [class.virtual]p1:
693 // A class that declares or inherits a virtual function is called a
694 // polymorphic class.
695 data().Polymorphic = true;
697 // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25:
698 // A [default constructor, copy/move constructor, or copy/move
699 // assignment operator for a class X] is trivial [...] if:
700 // -- class X has no virtual functions [...]
701 data().HasTrivialSpecialMembers &= SMF_Destructor;
702 data().HasTrivialSpecialMembersForCall &= SMF_Destructor;
705 // A standard-layout class is a class that: [...]
706 // -- has no virtual functions
707 data().IsStandardLayout = false;
708 data().IsCXX11StandardLayout = false;
712 // Notify the listener if an implicit member was added after the definition
714 if (!isBeingDefined() && D->isImplicit())
715 if (ASTMutationListener *L = getASTMutationListener())
716 L->AddedCXXImplicitMember(data().Definition, D);
718 // The kind of special member this declaration is, if any.
721 // Handle constructors.
722 if (const auto *Constructor = dyn_cast<CXXConstructorDecl>(D)) {
723 if (!Constructor->isImplicit()) {
724 // Note that we have a user-declared constructor.
725 data().UserDeclaredConstructor = true;
728 // A POD-struct is an aggregate class [...]
729 // Since the POD bit is meant to be C++03 POD-ness, clear it even if the
730 // type is technically an aggregate in C++0x since it wouldn't be in 03.
731 data().PlainOldData = false;
734 if (Constructor->isDefaultConstructor()) {
735 SMKind |= SMF_DefaultConstructor;
737 if (Constructor->isUserProvided())
738 data().UserProvidedDefaultConstructor = true;
739 if (Constructor->isConstexpr())
740 data().HasConstexprDefaultConstructor = true;
741 if (Constructor->isDefaulted())
742 data().HasDefaultedDefaultConstructor = true;
747 if (Constructor->isCopyConstructor(Quals)) {
748 SMKind |= SMF_CopyConstructor;
750 if (Quals & Qualifiers::Const)
751 data().HasDeclaredCopyConstructorWithConstParam = true;
752 } else if (Constructor->isMoveConstructor())
753 SMKind |= SMF_MoveConstructor;
756 // C++11 [dcl.init.aggr]p1: DR1518
757 // An aggregate is an array or a class with no user-provided [or]
758 // explicit [...] constructors
759 // C++20 [dcl.init.aggr]p1:
760 // An aggregate is an array or a class with no user-declared [...]
762 if (getASTContext().getLangOpts().CPlusPlus2a
763 ? !Constructor->isImplicit()
764 : (Constructor->isUserProvided() || Constructor->isExplicit()))
765 data().Aggregate = false;
768 // Handle constructors, including those inherited from base classes.
769 if (const auto *Constructor = dyn_cast<CXXConstructorDecl>(DUnderlying)) {
770 // Record if we see any constexpr constructors which are neither copy
771 // nor move constructors.
772 // C++1z [basic.types]p10:
773 // [...] has at least one constexpr constructor or constructor template
774 // (possibly inherited from a base class) that is not a copy or move
776 if (Constructor->isConstexpr() && !Constructor->isCopyOrMoveConstructor())
777 data().HasConstexprNonCopyMoveConstructor = true;
780 // Handle destructors.
781 if (const auto *DD = dyn_cast<CXXDestructorDecl>(D)) {
782 SMKind |= SMF_Destructor;
784 if (DD->isUserProvided())
785 data().HasIrrelevantDestructor = false;
786 // If the destructor is explicitly defaulted and not trivial or not public
787 // or if the destructor is deleted, we clear HasIrrelevantDestructor in
788 // finishedDefaultedOrDeletedMember.
790 // C++11 [class.dtor]p5:
791 // A destructor is trivial if [...] the destructor is not virtual.
792 if (DD->isVirtual()) {
793 data().HasTrivialSpecialMembers &= ~SMF_Destructor;
794 data().HasTrivialSpecialMembersForCall &= ~SMF_Destructor;
798 // Handle member functions.
799 if (const auto *Method = dyn_cast<CXXMethodDecl>(D)) {
800 if (Method->isCopyAssignmentOperator()) {
801 SMKind |= SMF_CopyAssignment;
803 const auto *ParamTy =
804 Method->getParamDecl(0)->getType()->getAs<ReferenceType>();
805 if (!ParamTy || ParamTy->getPointeeType().isConstQualified())
806 data().HasDeclaredCopyAssignmentWithConstParam = true;
809 if (Method->isMoveAssignmentOperator())
810 SMKind |= SMF_MoveAssignment;
812 // Keep the list of conversion functions up-to-date.
813 if (auto *Conversion = dyn_cast<CXXConversionDecl>(D)) {
814 // FIXME: We use the 'unsafe' accessor for the access specifier here,
815 // because Sema may not have set it yet. That's really just a misdesign
816 // in Sema. However, LLDB *will* have set the access specifier correctly,
817 // and adds declarations after the class is technically completed,
818 // so completeDefinition()'s overriding of the access specifiers doesn't
820 AccessSpecifier AS = Conversion->getAccessUnsafe();
822 if (Conversion->getPrimaryTemplate()) {
823 // We don't record specializations.
825 ASTContext &Ctx = getASTContext();
826 ASTUnresolvedSet &Conversions = data().Conversions.get(Ctx);
828 FunTmpl ? cast<NamedDecl>(FunTmpl) : cast<NamedDecl>(Conversion);
829 if (Primary->getPreviousDecl())
830 Conversions.replace(cast<NamedDecl>(Primary->getPreviousDecl()),
833 Conversions.addDecl(Ctx, Primary, AS);
838 // If this is the first declaration of a special member, we no longer have
839 // an implicit trivial special member.
840 data().HasTrivialSpecialMembers &=
841 data().DeclaredSpecialMembers | ~SMKind;
842 data().HasTrivialSpecialMembersForCall &=
843 data().DeclaredSpecialMembers | ~SMKind;
845 if (!Method->isImplicit() && !Method->isUserProvided()) {
846 // This method is user-declared but not user-provided. We can't work out
847 // whether it's trivial yet (not until we get to the end of the class).
848 // We'll handle this method in finishedDefaultedOrDeletedMember.
849 } else if (Method->isTrivial()) {
850 data().HasTrivialSpecialMembers |= SMKind;
851 data().HasTrivialSpecialMembersForCall |= SMKind;
852 } else if (Method->isTrivialForCall()) {
853 data().HasTrivialSpecialMembersForCall |= SMKind;
854 data().DeclaredNonTrivialSpecialMembers |= SMKind;
856 data().DeclaredNonTrivialSpecialMembers |= SMKind;
857 // If this is a user-provided function, do not set
858 // DeclaredNonTrivialSpecialMembersForCall here since we don't know
859 // yet whether the method would be considered non-trivial for the
860 // purpose of calls (attribute "trivial_abi" can be dropped from the
861 // class later, which can change the special method's triviality).
862 if (!Method->isUserProvided())
863 data().DeclaredNonTrivialSpecialMembersForCall |= SMKind;
866 // Note when we have declared a declared special member, and suppress the
867 // implicit declaration of this special member.
868 data().DeclaredSpecialMembers |= SMKind;
870 if (!Method->isImplicit()) {
871 data().UserDeclaredSpecialMembers |= SMKind;
874 // A POD-struct is an aggregate class that has [...] no user-defined
875 // copy assignment operator and no user-defined destructor.
877 // Since the POD bit is meant to be C++03 POD-ness, and in C++03,
878 // aggregates could not have any constructors, clear it even for an
879 // explicitly defaulted or deleted constructor.
880 // type is technically an aggregate in C++0x since it wouldn't be in 03.
882 // Also, a user-declared move assignment operator makes a class non-POD.
883 // This is an extension in C++03.
884 data().PlainOldData = false;
891 // Handle non-static data members.
892 if (const auto *Field = dyn_cast<FieldDecl>(D)) {
893 ASTContext &Context = getASTContext();
896 // A standard-layout class is a class that:
898 // -- has all non-static data members and bit-fields in the class and
899 // its base classes first declared in the same class
900 if (data().HasBasesWithFields)
901 data().IsStandardLayout = false;
903 // C++ [class.bit]p2:
904 // A declaration for a bit-field that omits the identifier declares an
905 // unnamed bit-field. Unnamed bit-fields are not members and cannot be
907 if (Field->isUnnamedBitfield()) {
908 // C++ [meta.unary.prop]p4: [LWG2358]
909 // T is a class type [...] with [...] no unnamed bit-fields of non-zero
911 if (data().Empty && !Field->isZeroLengthBitField(Context) &&
912 Context.getLangOpts().getClangABICompat() >
913 LangOptions::ClangABI::Ver6)
914 data().Empty = false;
919 // A standard-layout class is a class that:
920 // -- either has no non-static data members in the most derived class
921 // [...] or has no base classes with non-static data members
922 if (data().HasBasesWithNonStaticDataMembers)
923 data().IsCXX11StandardLayout = false;
925 // C++ [dcl.init.aggr]p1:
926 // An aggregate is an array or a class (clause 9) with [...] no
927 // private or protected non-static data members (clause 11).
929 // A POD must be an aggregate.
930 if (D->getAccess() == AS_private || D->getAccess() == AS_protected) {
931 data().Aggregate = false;
932 data().PlainOldData = false;
935 // Track whether this is the first field. We use this when checking
936 // whether the class is standard-layout below.
937 bool IsFirstField = !data().HasPrivateFields &&
938 !data().HasProtectedFields && !data().HasPublicFields;
941 // A standard-layout class is a class that:
943 // -- has the same access control for all non-static data members,
944 switch (D->getAccess()) {
945 case AS_private: data().HasPrivateFields = true; break;
946 case AS_protected: data().HasProtectedFields = true; break;
947 case AS_public: data().HasPublicFields = true; break;
948 case AS_none: llvm_unreachable("Invalid access specifier");
950 if ((data().HasPrivateFields + data().HasProtectedFields +
951 data().HasPublicFields) > 1) {
952 data().IsStandardLayout = false;
953 data().IsCXX11StandardLayout = false;
956 // Keep track of the presence of mutable fields.
957 if (Field->isMutable()) {
958 data().HasMutableFields = true;
959 data().NeedOverloadResolutionForCopyConstructor = true;
962 // C++11 [class.union]p8, DR1460:
963 // If X is a union, a non-static data member of X that is not an anonymous
964 // union is a variant member of X.
965 if (isUnion() && !Field->isAnonymousStructOrUnion())
966 data().HasVariantMembers = true;
969 // A POD struct is a class that is both a trivial class and a
970 // standard-layout class, and has no non-static data members of type
971 // non-POD struct, non-POD union (or array of such types).
973 // Automatic Reference Counting: the presence of a member of Objective-C pointer type
974 // that does not explicitly have no lifetime makes the class a non-POD.
975 QualType T = Context.getBaseElementType(Field->getType());
976 if (T->isObjCRetainableType() || T.isObjCGCStrong()) {
977 if (T.hasNonTrivialObjCLifetime()) {
978 // Objective-C Automatic Reference Counting:
979 // If a class has a non-static data member of Objective-C pointer
980 // type (or array thereof), it is a non-POD type and its
981 // default constructor (if any), copy constructor, move constructor,
982 // copy assignment operator, move assignment operator, and destructor are
984 setHasObjectMember(true);
985 struct DefinitionData &Data = data();
986 Data.PlainOldData = false;
987 Data.HasTrivialSpecialMembers = 0;
989 // __strong or __weak fields do not make special functions non-trivial
990 // for the purpose of calls.
991 Qualifiers::ObjCLifetime LT = T.getQualifiers().getObjCLifetime();
992 if (LT != Qualifiers::OCL_Strong && LT != Qualifiers::OCL_Weak)
993 data().HasTrivialSpecialMembersForCall = 0;
995 // Structs with __weak fields should never be passed directly.
996 if (LT == Qualifiers::OCL_Weak)
997 setArgPassingRestrictions(RecordDecl::APK_CanNeverPassInRegs);
999 Data.HasIrrelevantDestructor = false;
1002 data().DefaultedCopyConstructorIsDeleted = true;
1003 data().DefaultedMoveConstructorIsDeleted = true;
1004 data().DefaultedMoveAssignmentIsDeleted = true;
1005 data().DefaultedDestructorIsDeleted = true;
1006 data().NeedOverloadResolutionForCopyConstructor = true;
1007 data().NeedOverloadResolutionForMoveConstructor = true;
1008 data().NeedOverloadResolutionForMoveAssignment = true;
1009 data().NeedOverloadResolutionForDestructor = true;
1011 } else if (!Context.getLangOpts().ObjCAutoRefCount) {
1012 setHasObjectMember(true);
1014 } else if (!T.isCXX98PODType(Context))
1015 data().PlainOldData = false;
1017 if (T->isReferenceType()) {
1018 if (!Field->hasInClassInitializer())
1019 data().HasUninitializedReferenceMember = true;
1022 // A standard-layout class is a class that:
1023 // -- has no non-static data members of type [...] reference,
1024 data().IsStandardLayout = false;
1025 data().IsCXX11StandardLayout = false;
1027 // C++1z [class.copy.ctor]p10:
1028 // A defaulted copy constructor for a class X is defined as deleted if X has:
1029 // -- a non-static data member of rvalue reference type
1030 if (T->isRValueReferenceType())
1031 data().DefaultedCopyConstructorIsDeleted = true;
1034 if (!Field->hasInClassInitializer() && !Field->isMutable()) {
1035 if (CXXRecordDecl *FieldType = T->getAsCXXRecordDecl()) {
1036 if (FieldType->hasDefinition() && !FieldType->allowConstDefaultInit())
1037 data().HasUninitializedFields = true;
1039 data().HasUninitializedFields = true;
1043 // Record if this field is the first non-literal or volatile field or base.
1044 if (!T->isLiteralType(Context) || T.isVolatileQualified())
1045 data().HasNonLiteralTypeFieldsOrBases = true;
1047 if (Field->hasInClassInitializer() ||
1048 (Field->isAnonymousStructOrUnion() &&
1049 Field->getType()->getAsCXXRecordDecl()->hasInClassInitializer())) {
1050 data().HasInClassInitializer = true;
1053 // A default constructor is trivial if [...] no non-static data member
1054 // of its class has a brace-or-equal-initializer.
1055 data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor;
1057 // C++11 [dcl.init.aggr]p1:
1058 // An aggregate is a [...] class with [...] no
1059 // brace-or-equal-initializers for non-static data members.
1061 // This rule was removed in C++14.
1062 if (!getASTContext().getLangOpts().CPlusPlus14)
1063 data().Aggregate = false;
1065 // C++11 [class]p10:
1066 // A POD struct is [...] a trivial class.
1067 data().PlainOldData = false;
1070 // C++11 [class.copy]p23:
1071 // A defaulted copy/move assignment operator for a class X is defined
1072 // as deleted if X has:
1073 // -- a non-static data member of reference type
1074 if (T->isReferenceType())
1075 data().DefaultedMoveAssignmentIsDeleted = true;
1077 // Bitfields of length 0 are also zero-sized, but we already bailed out for
1078 // those because they are always unnamed.
1079 bool IsZeroSize = Field->isZeroSize(Context);
1081 if (const auto *RecordTy = T->getAs<RecordType>()) {
1082 auto *FieldRec = cast<CXXRecordDecl>(RecordTy->getDecl());
1083 if (FieldRec->getDefinition()) {
1084 addedClassSubobject(FieldRec);
1086 // We may need to perform overload resolution to determine whether a
1087 // field can be moved if it's const or volatile qualified.
1088 if (T.getCVRQualifiers() & (Qualifiers::Const | Qualifiers::Volatile)) {
1089 // We need to care about 'const' for the copy constructor because an
1090 // implicit copy constructor might be declared with a non-const
1092 data().NeedOverloadResolutionForCopyConstructor = true;
1093 data().NeedOverloadResolutionForMoveConstructor = true;
1094 data().NeedOverloadResolutionForMoveAssignment = true;
1097 // C++11 [class.ctor]p5, C++11 [class.copy]p11:
1098 // A defaulted [special member] for a class X is defined as
1100 // -- X is a union-like class that has a variant member with a
1101 // non-trivial [corresponding special member]
1103 if (FieldRec->hasNonTrivialCopyConstructor())
1104 data().DefaultedCopyConstructorIsDeleted = true;
1105 if (FieldRec->hasNonTrivialMoveConstructor())
1106 data().DefaultedMoveConstructorIsDeleted = true;
1107 if (FieldRec->hasNonTrivialMoveAssignment())
1108 data().DefaultedMoveAssignmentIsDeleted = true;
1109 if (FieldRec->hasNonTrivialDestructor())
1110 data().DefaultedDestructorIsDeleted = true;
1113 // For an anonymous union member, our overload resolution will perform
1114 // overload resolution for its members.
1115 if (Field->isAnonymousStructOrUnion()) {
1116 data().NeedOverloadResolutionForCopyConstructor |=
1117 FieldRec->data().NeedOverloadResolutionForCopyConstructor;
1118 data().NeedOverloadResolutionForMoveConstructor |=
1119 FieldRec->data().NeedOverloadResolutionForMoveConstructor;
1120 data().NeedOverloadResolutionForMoveAssignment |=
1121 FieldRec->data().NeedOverloadResolutionForMoveAssignment;
1122 data().NeedOverloadResolutionForDestructor |=
1123 FieldRec->data().NeedOverloadResolutionForDestructor;
1126 // C++0x [class.ctor]p5:
1127 // A default constructor is trivial [...] if:
1128 // -- for all the non-static data members of its class that are of
1129 // class type (or array thereof), each such class has a trivial
1130 // default constructor.
1131 if (!FieldRec->hasTrivialDefaultConstructor())
1132 data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor;
1134 // C++0x [class.copy]p13:
1135 // A copy/move constructor for class X is trivial if [...]
1137 // -- for each non-static data member of X that is of class type (or
1138 // an array thereof), the constructor selected to copy/move that
1139 // member is trivial;
1140 if (!FieldRec->hasTrivialCopyConstructor())
1141 data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor;
1143 if (!FieldRec->hasTrivialCopyConstructorForCall())
1144 data().HasTrivialSpecialMembersForCall &= ~SMF_CopyConstructor;
1146 // If the field doesn't have a simple move constructor, we'll eagerly
1147 // declare the move constructor for this class and we'll decide whether
1148 // it's trivial then.
1149 if (!FieldRec->hasTrivialMoveConstructor())
1150 data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor;
1152 if (!FieldRec->hasTrivialMoveConstructorForCall())
1153 data().HasTrivialSpecialMembersForCall &= ~SMF_MoveConstructor;
1155 // C++0x [class.copy]p27:
1156 // A copy/move assignment operator for class X is trivial if [...]
1158 // -- for each non-static data member of X that is of class type (or
1159 // an array thereof), the assignment operator selected to
1160 // copy/move that member is trivial;
1161 if (!FieldRec->hasTrivialCopyAssignment())
1162 data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment;
1163 // If the field doesn't have a simple move assignment, we'll eagerly
1164 // declare the move assignment for this class and we'll decide whether
1165 // it's trivial then.
1166 if (!FieldRec->hasTrivialMoveAssignment())
1167 data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment;
1169 if (!FieldRec->hasTrivialDestructor())
1170 data().HasTrivialSpecialMembers &= ~SMF_Destructor;
1171 if (!FieldRec->hasTrivialDestructorForCall())
1172 data().HasTrivialSpecialMembersForCall &= ~SMF_Destructor;
1173 if (!FieldRec->hasIrrelevantDestructor())
1174 data().HasIrrelevantDestructor = false;
1175 if (FieldRec->hasObjectMember())
1176 setHasObjectMember(true);
1177 if (FieldRec->hasVolatileMember())
1178 setHasVolatileMember(true);
1179 if (FieldRec->getArgPassingRestrictions() ==
1180 RecordDecl::APK_CanNeverPassInRegs)
1181 setArgPassingRestrictions(RecordDecl::APK_CanNeverPassInRegs);
1184 // A standard-layout class is a class that:
1185 // -- has no non-static data members of type non-standard-layout
1186 // class (or array of such types) [...]
1187 if (!FieldRec->isStandardLayout())
1188 data().IsStandardLayout = false;
1189 if (!FieldRec->isCXX11StandardLayout())
1190 data().IsCXX11StandardLayout = false;
1193 // A standard-layout class is a class that:
1195 // -- has no element of the set M(S) of types as a base class.
1196 if (data().IsStandardLayout &&
1197 (isUnion() || IsFirstField || IsZeroSize) &&
1198 hasSubobjectAtOffsetZeroOfEmptyBaseType(Context, FieldRec))
1199 data().IsStandardLayout = false;
1202 // A standard-layout class is a class that:
1203 // -- has no base classes of the same type as the first non-static
1205 if (data().IsCXX11StandardLayout && IsFirstField) {
1206 // FIXME: We should check all base classes here, not just direct
1208 for (const auto &BI : bases()) {
1209 if (Context.hasSameUnqualifiedType(BI.getType(), T)) {
1210 data().IsCXX11StandardLayout = false;
1216 // Keep track of the presence of mutable fields.
1217 if (FieldRec->hasMutableFields()) {
1218 data().HasMutableFields = true;
1219 data().NeedOverloadResolutionForCopyConstructor = true;
1222 // C++11 [class.copy]p13:
1223 // If the implicitly-defined constructor would satisfy the
1224 // requirements of a constexpr constructor, the implicitly-defined
1225 // constructor is constexpr.
1226 // C++11 [dcl.constexpr]p4:
1227 // -- every constructor involved in initializing non-static data
1228 // members [...] shall be a constexpr constructor
1229 if (!Field->hasInClassInitializer() &&
1230 !FieldRec->hasConstexprDefaultConstructor() && !isUnion())
1231 // The standard requires any in-class initializer to be a constant
1232 // expression. We consider this to be a defect.
1233 data().DefaultedDefaultConstructorIsConstexpr = false;
1235 // C++11 [class.copy]p8:
1236 // The implicitly-declared copy constructor for a class X will have
1237 // the form 'X::X(const X&)' if each potentially constructed subobject
1238 // of a class type M (or array thereof) has a copy constructor whose
1239 // first parameter is of type 'const M&' or 'const volatile M&'.
1240 if (!FieldRec->hasCopyConstructorWithConstParam())
1241 data().ImplicitCopyConstructorCanHaveConstParamForNonVBase = false;
1243 // C++11 [class.copy]p18:
1244 // The implicitly-declared copy assignment oeprator for a class X will
1245 // have the form 'X& X::operator=(const X&)' if [...] for all the
1246 // non-static data members of X that are of a class type M (or array
1247 // thereof), each such class type has a copy assignment operator whose
1248 // parameter is of type 'const M&', 'const volatile M&' or 'M'.
1249 if (!FieldRec->hasCopyAssignmentWithConstParam())
1250 data().ImplicitCopyAssignmentHasConstParam = false;
1252 if (FieldRec->hasUninitializedReferenceMember() &&
1253 !Field->hasInClassInitializer())
1254 data().HasUninitializedReferenceMember = true;
1256 // C++11 [class.union]p8, DR1460:
1257 // a non-static data member of an anonymous union that is a member of
1258 // X is also a variant member of X.
1259 if (FieldRec->hasVariantMembers() &&
1260 Field->isAnonymousStructOrUnion())
1261 data().HasVariantMembers = true;
1264 // Base element type of field is a non-class type.
1265 if (!T->isLiteralType(Context) ||
1266 (!Field->hasInClassInitializer() && !isUnion()))
1267 data().DefaultedDefaultConstructorIsConstexpr = false;
1269 // C++11 [class.copy]p23:
1270 // A defaulted copy/move assignment operator for a class X is defined
1271 // as deleted if X has:
1272 // -- a non-static data member of const non-class type (or array
1274 if (T.isConstQualified())
1275 data().DefaultedMoveAssignmentIsDeleted = true;
1278 // C++14 [meta.unary.prop]p4:
1279 // T is a class type [...] with [...] no non-static data members other
1280 // than subobjects of zero size
1281 if (data().Empty && !IsZeroSize)
1282 data().Empty = false;
1285 // Handle using declarations of conversion functions.
1286 if (auto *Shadow = dyn_cast<UsingShadowDecl>(D)) {
1287 if (Shadow->getDeclName().getNameKind()
1288 == DeclarationName::CXXConversionFunctionName) {
1289 ASTContext &Ctx = getASTContext();
1290 data().Conversions.get(Ctx).addDecl(Ctx, Shadow, Shadow->getAccess());
1294 if (const auto *Using = dyn_cast<UsingDecl>(D)) {
1295 if (Using->getDeclName().getNameKind() ==
1296 DeclarationName::CXXConstructorName) {
1297 data().HasInheritedConstructor = true;
1298 // C++1z [dcl.init.aggr]p1:
1299 // An aggregate is [...] a class [...] with no inherited constructors
1300 data().Aggregate = false;
1303 if (Using->getDeclName().getCXXOverloadedOperator() == OO_Equal)
1304 data().HasInheritedAssignment = true;
1308 void CXXRecordDecl::finishedDefaultedOrDeletedMember(CXXMethodDecl *D) {
1309 assert(!D->isImplicit() && !D->isUserProvided());
1311 // The kind of special member this declaration is, if any.
1312 unsigned SMKind = 0;
1314 if (const auto *Constructor = dyn_cast<CXXConstructorDecl>(D)) {
1315 if (Constructor->isDefaultConstructor()) {
1316 SMKind |= SMF_DefaultConstructor;
1317 if (Constructor->isConstexpr())
1318 data().HasConstexprDefaultConstructor = true;
1320 if (Constructor->isCopyConstructor())
1321 SMKind |= SMF_CopyConstructor;
1322 else if (Constructor->isMoveConstructor())
1323 SMKind |= SMF_MoveConstructor;
1324 else if (Constructor->isConstexpr())
1325 // We may now know that the constructor is constexpr.
1326 data().HasConstexprNonCopyMoveConstructor = true;
1327 } else if (isa<CXXDestructorDecl>(D)) {
1328 SMKind |= SMF_Destructor;
1329 if (!D->isTrivial() || D->getAccess() != AS_public || D->isDeleted())
1330 data().HasIrrelevantDestructor = false;
1331 } else if (D->isCopyAssignmentOperator())
1332 SMKind |= SMF_CopyAssignment;
1333 else if (D->isMoveAssignmentOperator())
1334 SMKind |= SMF_MoveAssignment;
1336 // Update which trivial / non-trivial special members we have.
1337 // addedMember will have skipped this step for this member.
1339 data().HasTrivialSpecialMembers |= SMKind;
1341 data().DeclaredNonTrivialSpecialMembers |= SMKind;
1344 void CXXRecordDecl::setTrivialForCallFlags(CXXMethodDecl *D) {
1345 unsigned SMKind = 0;
1347 if (const auto *Constructor = dyn_cast<CXXConstructorDecl>(D)) {
1348 if (Constructor->isCopyConstructor())
1349 SMKind = SMF_CopyConstructor;
1350 else if (Constructor->isMoveConstructor())
1351 SMKind = SMF_MoveConstructor;
1352 } else if (isa<CXXDestructorDecl>(D))
1353 SMKind = SMF_Destructor;
1355 if (D->isTrivialForCall())
1356 data().HasTrivialSpecialMembersForCall |= SMKind;
1358 data().DeclaredNonTrivialSpecialMembersForCall |= SMKind;
1361 bool CXXRecordDecl::isCLike() const {
1362 if (getTagKind() == TTK_Class || getTagKind() == TTK_Interface ||
1363 !TemplateOrInstantiation.isNull())
1365 if (!hasDefinition())
1368 return isPOD() && data().HasOnlyCMembers;
1371 bool CXXRecordDecl::isGenericLambda() const {
1372 if (!isLambda()) return false;
1373 return getLambdaData().IsGenericLambda;
1377 static bool allLookupResultsAreTheSame(const DeclContext::lookup_result &R) {
1379 if (!declaresSameEntity(D, R.front()))
1385 CXXMethodDecl* CXXRecordDecl::getLambdaCallOperator() const {
1386 if (!isLambda()) return nullptr;
1387 DeclarationName Name =
1388 getASTContext().DeclarationNames.getCXXOperatorName(OO_Call);
1389 DeclContext::lookup_result Calls = lookup(Name);
1391 assert(!Calls.empty() && "Missing lambda call operator!");
1392 assert(allLookupResultsAreTheSame(Calls) &&
1393 "More than one lambda call operator!");
1395 NamedDecl *CallOp = Calls.front();
1396 if (const auto *CallOpTmpl = dyn_cast<FunctionTemplateDecl>(CallOp))
1397 return cast<CXXMethodDecl>(CallOpTmpl->getTemplatedDecl());
1399 return cast<CXXMethodDecl>(CallOp);
1402 CXXMethodDecl* CXXRecordDecl::getLambdaStaticInvoker() const {
1403 if (!isLambda()) return nullptr;
1404 DeclarationName Name =
1405 &getASTContext().Idents.get(getLambdaStaticInvokerName());
1406 DeclContext::lookup_result Invoker = lookup(Name);
1407 if (Invoker.empty()) return nullptr;
1408 assert(allLookupResultsAreTheSame(Invoker) &&
1409 "More than one static invoker operator!");
1410 NamedDecl *InvokerFun = Invoker.front();
1411 if (const auto *InvokerTemplate = dyn_cast<FunctionTemplateDecl>(InvokerFun))
1412 return cast<CXXMethodDecl>(InvokerTemplate->getTemplatedDecl());
1414 return cast<CXXMethodDecl>(InvokerFun);
1417 void CXXRecordDecl::getCaptureFields(
1418 llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures,
1419 FieldDecl *&ThisCapture) const {
1421 ThisCapture = nullptr;
1423 LambdaDefinitionData &Lambda = getLambdaData();
1424 RecordDecl::field_iterator Field = field_begin();
1425 for (const LambdaCapture *C = Lambda.Captures, *CEnd = C + Lambda.NumCaptures;
1426 C != CEnd; ++C, ++Field) {
1427 if (C->capturesThis())
1428 ThisCapture = *Field;
1429 else if (C->capturesVariable())
1430 Captures[C->getCapturedVar()] = *Field;
1432 assert(Field == field_end());
1435 TemplateParameterList *
1436 CXXRecordDecl::getGenericLambdaTemplateParameterList() const {
1437 if (!isGenericLambda()) return nullptr;
1438 CXXMethodDecl *CallOp = getLambdaCallOperator();
1439 if (FunctionTemplateDecl *Tmpl = CallOp->getDescribedFunctionTemplate())
1440 return Tmpl->getTemplateParameters();
1444 ArrayRef<NamedDecl *>
1445 CXXRecordDecl::getLambdaExplicitTemplateParameters() const {
1446 TemplateParameterList *List = getGenericLambdaTemplateParameterList();
1450 assert(std::is_partitioned(List->begin(), List->end(),
1451 [](const NamedDecl *D) { return !D->isImplicit(); })
1452 && "Explicit template params should be ordered before implicit ones");
1454 const auto ExplicitEnd = llvm::partition_point(
1455 *List, [](const NamedDecl *D) { return !D->isImplicit(); });
1456 return llvm::makeArrayRef(List->begin(), ExplicitEnd);
1459 Decl *CXXRecordDecl::getLambdaContextDecl() const {
1460 assert(isLambda() && "Not a lambda closure type!");
1461 ExternalASTSource *Source = getParentASTContext().getExternalSource();
1462 return getLambdaData().ContextDecl.get(Source);
1465 static CanQualType GetConversionType(ASTContext &Context, NamedDecl *Conv) {
1467 cast<CXXConversionDecl>(Conv->getUnderlyingDecl()->getAsFunction())
1468 ->getConversionType();
1469 return Context.getCanonicalType(T);
1472 /// Collect the visible conversions of a base class.
1474 /// \param Record a base class of the class we're considering
1475 /// \param InVirtual whether this base class is a virtual base (or a base
1476 /// of a virtual base)
1477 /// \param Access the access along the inheritance path to this base
1478 /// \param ParentHiddenTypes the conversions provided by the inheritors
1480 /// \param Output the set to which to add conversions from non-virtual bases
1481 /// \param VOutput the set to which to add conversions from virtual bases
1482 /// \param HiddenVBaseCs the set of conversions which were hidden in a
1483 /// virtual base along some inheritance path
1484 static void CollectVisibleConversions(ASTContext &Context,
1485 CXXRecordDecl *Record,
1487 AccessSpecifier Access,
1488 const llvm::SmallPtrSet<CanQualType, 8> &ParentHiddenTypes,
1489 ASTUnresolvedSet &Output,
1490 UnresolvedSetImpl &VOutput,
1491 llvm::SmallPtrSet<NamedDecl*, 8> &HiddenVBaseCs) {
1492 // The set of types which have conversions in this class or its
1493 // subclasses. As an optimization, we don't copy the derived set
1494 // unless it might change.
1495 const llvm::SmallPtrSet<CanQualType, 8> *HiddenTypes = &ParentHiddenTypes;
1496 llvm::SmallPtrSet<CanQualType, 8> HiddenTypesBuffer;
1498 // Collect the direct conversions and figure out which conversions
1499 // will be hidden in the subclasses.
1500 CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin();
1501 CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end();
1502 if (ConvI != ConvE) {
1503 HiddenTypesBuffer = ParentHiddenTypes;
1504 HiddenTypes = &HiddenTypesBuffer;
1506 for (CXXRecordDecl::conversion_iterator I = ConvI; I != ConvE; ++I) {
1507 CanQualType ConvType(GetConversionType(Context, I.getDecl()));
1508 bool Hidden = ParentHiddenTypes.count(ConvType);
1510 HiddenTypesBuffer.insert(ConvType);
1512 // If this conversion is hidden and we're in a virtual base,
1513 // remember that it's hidden along some inheritance path.
1514 if (Hidden && InVirtual)
1515 HiddenVBaseCs.insert(cast<NamedDecl>(I.getDecl()->getCanonicalDecl()));
1517 // If this conversion isn't hidden, add it to the appropriate output.
1519 AccessSpecifier IAccess
1520 = CXXRecordDecl::MergeAccess(Access, I.getAccess());
1523 VOutput.addDecl(I.getDecl(), IAccess);
1525 Output.addDecl(Context, I.getDecl(), IAccess);
1530 // Collect information recursively from any base classes.
1531 for (const auto &I : Record->bases()) {
1532 const RecordType *RT = I.getType()->getAs<RecordType>();
1535 AccessSpecifier BaseAccess
1536 = CXXRecordDecl::MergeAccess(Access, I.getAccessSpecifier());
1537 bool BaseInVirtual = InVirtual || I.isVirtual();
1539 auto *Base = cast<CXXRecordDecl>(RT->getDecl());
1540 CollectVisibleConversions(Context, Base, BaseInVirtual, BaseAccess,
1541 *HiddenTypes, Output, VOutput, HiddenVBaseCs);
1545 /// Collect the visible conversions of a class.
1547 /// This would be extremely straightforward if it weren't for virtual
1548 /// bases. It might be worth special-casing that, really.
1549 static void CollectVisibleConversions(ASTContext &Context,
1550 CXXRecordDecl *Record,
1551 ASTUnresolvedSet &Output) {
1552 // The collection of all conversions in virtual bases that we've
1553 // found. These will be added to the output as long as they don't
1554 // appear in the hidden-conversions set.
1555 UnresolvedSet<8> VBaseCs;
1557 // The set of conversions in virtual bases that we've determined to
1559 llvm::SmallPtrSet<NamedDecl*, 8> HiddenVBaseCs;
1561 // The set of types hidden by classes derived from this one.
1562 llvm::SmallPtrSet<CanQualType, 8> HiddenTypes;
1564 // Go ahead and collect the direct conversions and add them to the
1565 // hidden-types set.
1566 CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin();
1567 CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end();
1568 Output.append(Context, ConvI, ConvE);
1569 for (; ConvI != ConvE; ++ConvI)
1570 HiddenTypes.insert(GetConversionType(Context, ConvI.getDecl()));
1572 // Recursively collect conversions from base classes.
1573 for (const auto &I : Record->bases()) {
1574 const RecordType *RT = I.getType()->getAs<RecordType>();
1577 CollectVisibleConversions(Context, cast<CXXRecordDecl>(RT->getDecl()),
1578 I.isVirtual(), I.getAccessSpecifier(),
1579 HiddenTypes, Output, VBaseCs, HiddenVBaseCs);
1582 // Add any unhidden conversions provided by virtual bases.
1583 for (UnresolvedSetIterator I = VBaseCs.begin(), E = VBaseCs.end();
1585 if (!HiddenVBaseCs.count(cast<NamedDecl>(I.getDecl()->getCanonicalDecl())))
1586 Output.addDecl(Context, I.getDecl(), I.getAccess());
1590 /// getVisibleConversionFunctions - get all conversion functions visible
1591 /// in current class; including conversion function templates.
1592 llvm::iterator_range<CXXRecordDecl::conversion_iterator>
1593 CXXRecordDecl::getVisibleConversionFunctions() {
1594 ASTContext &Ctx = getASTContext();
1596 ASTUnresolvedSet *Set;
1597 if (bases_begin() == bases_end()) {
1598 // If root class, all conversions are visible.
1599 Set = &data().Conversions.get(Ctx);
1601 Set = &data().VisibleConversions.get(Ctx);
1602 // If visible conversion list is not evaluated, evaluate it.
1603 if (!data().ComputedVisibleConversions) {
1604 CollectVisibleConversions(Ctx, this, *Set);
1605 data().ComputedVisibleConversions = true;
1608 return llvm::make_range(Set->begin(), Set->end());
1611 void CXXRecordDecl::removeConversion(const NamedDecl *ConvDecl) {
1612 // This operation is O(N) but extremely rare. Sema only uses it to
1613 // remove UsingShadowDecls in a class that were followed by a direct
1614 // declaration, e.g.:
1616 // using B::operator int;
1619 // This is uncommon by itself and even more uncommon in conjunction
1620 // with sufficiently large numbers of directly-declared conversions
1621 // that asymptotic behavior matters.
1623 ASTUnresolvedSet &Convs = data().Conversions.get(getASTContext());
1624 for (unsigned I = 0, E = Convs.size(); I != E; ++I) {
1625 if (Convs[I].getDecl() == ConvDecl) {
1627 assert(llvm::find(Convs, ConvDecl) == Convs.end() &&
1628 "conversion was found multiple times in unresolved set");
1633 llvm_unreachable("conversion not found in set!");
1636 CXXRecordDecl *CXXRecordDecl::getInstantiatedFromMemberClass() const {
1637 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
1638 return cast<CXXRecordDecl>(MSInfo->getInstantiatedFrom());
1643 MemberSpecializationInfo *CXXRecordDecl::getMemberSpecializationInfo() const {
1644 return TemplateOrInstantiation.dyn_cast<MemberSpecializationInfo *>();
1648 CXXRecordDecl::setInstantiationOfMemberClass(CXXRecordDecl *RD,
1649 TemplateSpecializationKind TSK) {
1650 assert(TemplateOrInstantiation.isNull() &&
1651 "Previous template or instantiation?");
1652 assert(!isa<ClassTemplatePartialSpecializationDecl>(this));
1653 TemplateOrInstantiation
1654 = new (getASTContext()) MemberSpecializationInfo(RD, TSK);
1657 ClassTemplateDecl *CXXRecordDecl::getDescribedClassTemplate() const {
1658 return TemplateOrInstantiation.dyn_cast<ClassTemplateDecl *>();
1661 void CXXRecordDecl::setDescribedClassTemplate(ClassTemplateDecl *Template) {
1662 TemplateOrInstantiation = Template;
1665 TemplateSpecializationKind CXXRecordDecl::getTemplateSpecializationKind() const{
1666 if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(this))
1667 return Spec->getSpecializationKind();
1669 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
1670 return MSInfo->getTemplateSpecializationKind();
1672 return TSK_Undeclared;
1676 CXXRecordDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK) {
1677 if (auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(this)) {
1678 Spec->setSpecializationKind(TSK);
1682 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) {
1683 MSInfo->setTemplateSpecializationKind(TSK);
1687 llvm_unreachable("Not a class template or member class specialization");
1690 const CXXRecordDecl *CXXRecordDecl::getTemplateInstantiationPattern() const {
1691 auto GetDefinitionOrSelf =
1692 [](const CXXRecordDecl *D) -> const CXXRecordDecl * {
1693 if (auto *Def = D->getDefinition())
1698 // If it's a class template specialization, find the template or partial
1699 // specialization from which it was instantiated.
1700 if (auto *TD = dyn_cast<ClassTemplateSpecializationDecl>(this)) {
1701 auto From = TD->getInstantiatedFrom();
1702 if (auto *CTD = From.dyn_cast<ClassTemplateDecl *>()) {
1703 while (auto *NewCTD = CTD->getInstantiatedFromMemberTemplate()) {
1704 if (NewCTD->isMemberSpecialization())
1708 return GetDefinitionOrSelf(CTD->getTemplatedDecl());
1711 From.dyn_cast<ClassTemplatePartialSpecializationDecl *>()) {
1712 while (auto *NewCTPSD = CTPSD->getInstantiatedFromMember()) {
1713 if (NewCTPSD->isMemberSpecialization())
1717 return GetDefinitionOrSelf(CTPSD);
1721 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) {
1722 if (isTemplateInstantiation(MSInfo->getTemplateSpecializationKind())) {
1723 const CXXRecordDecl *RD = this;
1724 while (auto *NewRD = RD->getInstantiatedFromMemberClass())
1726 return GetDefinitionOrSelf(RD);
1730 assert(!isTemplateInstantiation(this->getTemplateSpecializationKind()) &&
1731 "couldn't find pattern for class template instantiation");
1735 CXXDestructorDecl *CXXRecordDecl::getDestructor() const {
1736 ASTContext &Context = getASTContext();
1737 QualType ClassType = Context.getTypeDeclType(this);
1739 DeclarationName Name
1740 = Context.DeclarationNames.getCXXDestructorName(
1741 Context.getCanonicalType(ClassType));
1743 DeclContext::lookup_result R = lookup(Name);
1745 return R.empty() ? nullptr : dyn_cast<CXXDestructorDecl>(R.front());
1748 bool CXXRecordDecl::isAnyDestructorNoReturn() const {
1749 // Destructor is noreturn.
1750 if (const CXXDestructorDecl *Destructor = getDestructor())
1751 if (Destructor->isNoReturn())
1754 // Check base classes destructor for noreturn.
1755 for (const auto &Base : bases())
1756 if (const CXXRecordDecl *RD = Base.getType()->getAsCXXRecordDecl())
1757 if (RD->isAnyDestructorNoReturn())
1760 // Check fields for noreturn.
1761 for (const auto *Field : fields())
1762 if (const CXXRecordDecl *RD =
1763 Field->getType()->getBaseElementTypeUnsafe()->getAsCXXRecordDecl())
1764 if (RD->isAnyDestructorNoReturn())
1767 // All destructors are not noreturn.
1771 static bool isDeclContextInNamespace(const DeclContext *DC) {
1772 while (!DC->isTranslationUnit()) {
1773 if (DC->isNamespace())
1775 DC = DC->getParent();
1780 bool CXXRecordDecl::isInterfaceLike() const {
1781 assert(hasDefinition() && "checking for interface-like without a definition");
1782 // All __interfaces are inheritently interface-like.
1786 // Interface-like types cannot have a user declared constructor, destructor,
1787 // friends, VBases, conversion functions, or fields. Additionally, lambdas
1788 // cannot be interface types.
1789 if (isLambda() || hasUserDeclaredConstructor() ||
1790 hasUserDeclaredDestructor() || !field_empty() || hasFriends() ||
1791 getNumVBases() > 0 || conversion_end() - conversion_begin() > 0)
1794 // No interface-like type can have a method with a definition.
1795 for (const auto *const Method : methods())
1796 if (Method->isDefined() && !Method->isImplicit())
1799 // Check "Special" types.
1800 const auto *Uuid = getAttr<UuidAttr>();
1801 // MS SDK declares IUnknown/IDispatch both in the root of a TU, or in an
1802 // extern C++ block directly in the TU. These are only valid if in one
1803 // of these two situations.
1804 if (Uuid && isStruct() && !getDeclContext()->isExternCContext() &&
1805 !isDeclContextInNamespace(getDeclContext()) &&
1806 ((getName() == "IUnknown" &&
1807 Uuid->getGuid() == "00000000-0000-0000-C000-000000000046") ||
1808 (getName() == "IDispatch" &&
1809 Uuid->getGuid() == "00020400-0000-0000-C000-000000000046"))) {
1810 if (getNumBases() > 0)
1815 // FIXME: Any access specifiers is supposed to make this no longer interface
1818 // If this isn't a 'special' type, it must have a single interface-like base.
1819 if (getNumBases() != 1)
1822 const auto BaseSpec = *bases_begin();
1823 if (BaseSpec.isVirtual() || BaseSpec.getAccessSpecifier() != AS_public)
1825 const auto *Base = BaseSpec.getType()->getAsCXXRecordDecl();
1826 if (Base->isInterface() || !Base->isInterfaceLike())
1831 void CXXRecordDecl::completeDefinition() {
1832 completeDefinition(nullptr);
1835 void CXXRecordDecl::completeDefinition(CXXFinalOverriderMap *FinalOverriders) {
1836 RecordDecl::completeDefinition();
1838 // If the class may be abstract (but hasn't been marked as such), check for
1839 // any pure final overriders.
1840 if (mayBeAbstract()) {
1841 CXXFinalOverriderMap MyFinalOverriders;
1842 if (!FinalOverriders) {
1843 getFinalOverriders(MyFinalOverriders);
1844 FinalOverriders = &MyFinalOverriders;
1848 for (CXXFinalOverriderMap::iterator M = FinalOverriders->begin(),
1849 MEnd = FinalOverriders->end();
1850 M != MEnd && !Done; ++M) {
1851 for (OverridingMethods::iterator SO = M->second.begin(),
1852 SOEnd = M->second.end();
1853 SO != SOEnd && !Done; ++SO) {
1854 assert(SO->second.size() > 0 &&
1855 "All virtual functions have overriding virtual functions");
1857 // C++ [class.abstract]p4:
1858 // A class is abstract if it contains or inherits at least one
1859 // pure virtual function for which the final overrider is pure
1861 if (SO->second.front().Method->isPure()) {
1862 data().Abstract = true;
1870 // Set access bits correctly on the directly-declared conversions.
1871 for (conversion_iterator I = conversion_begin(), E = conversion_end();
1873 I.setAccess((*I)->getAccess());
1876 bool CXXRecordDecl::mayBeAbstract() const {
1877 if (data().Abstract || isInvalidDecl() || !data().Polymorphic ||
1878 isDependentContext())
1881 for (const auto &B : bases()) {
1882 const auto *BaseDecl =
1883 cast<CXXRecordDecl>(B.getType()->getAs<RecordType>()->getDecl());
1884 if (BaseDecl->isAbstract())
1891 void CXXDeductionGuideDecl::anchor() {}
1893 bool ExplicitSpecifier::isEquivalent(const ExplicitSpecifier Other) const {
1894 if ((getKind() != Other.getKind() ||
1895 getKind() == ExplicitSpecKind::Unresolved)) {
1896 if (getKind() == ExplicitSpecKind::Unresolved &&
1897 Other.getKind() == ExplicitSpecKind::Unresolved) {
1898 ODRHash SelfHash, OtherHash;
1899 SelfHash.AddStmt(getExpr());
1900 OtherHash.AddStmt(Other.getExpr());
1901 return SelfHash.CalculateHash() == OtherHash.CalculateHash();
1908 ExplicitSpecifier ExplicitSpecifier::getFromDecl(FunctionDecl *Function) {
1909 switch (Function->getDeclKind()) {
1910 case Decl::Kind::CXXConstructor:
1911 return cast<CXXConstructorDecl>(Function)->getExplicitSpecifier();
1912 case Decl::Kind::CXXConversion:
1913 return cast<CXXConversionDecl>(Function)->getExplicitSpecifier();
1914 case Decl::Kind::CXXDeductionGuide:
1915 return cast<CXXDeductionGuideDecl>(Function)->getExplicitSpecifier();
1921 CXXDeductionGuideDecl *CXXDeductionGuideDecl::Create(
1922 ASTContext &C, DeclContext *DC, SourceLocation StartLoc,
1923 ExplicitSpecifier ES, const DeclarationNameInfo &NameInfo, QualType T,
1924 TypeSourceInfo *TInfo, SourceLocation EndLocation) {
1925 return new (C, DC) CXXDeductionGuideDecl(C, DC, StartLoc, ES, NameInfo, T,
1926 TInfo, EndLocation);
1929 CXXDeductionGuideDecl *CXXDeductionGuideDecl::CreateDeserialized(ASTContext &C,
1931 return new (C, ID) CXXDeductionGuideDecl(
1932 C, nullptr, SourceLocation(), ExplicitSpecifier(), DeclarationNameInfo(),
1933 QualType(), nullptr, SourceLocation());
1936 void CXXMethodDecl::anchor() {}
1938 bool CXXMethodDecl::isStatic() const {
1939 const CXXMethodDecl *MD = getCanonicalDecl();
1941 if (MD->getStorageClass() == SC_Static)
1944 OverloadedOperatorKind OOK = getDeclName().getCXXOverloadedOperator();
1945 return isStaticOverloadedOperator(OOK);
1948 static bool recursivelyOverrides(const CXXMethodDecl *DerivedMD,
1949 const CXXMethodDecl *BaseMD) {
1950 for (const CXXMethodDecl *MD : DerivedMD->overridden_methods()) {
1951 if (MD->getCanonicalDecl() == BaseMD->getCanonicalDecl())
1953 if (recursivelyOverrides(MD, BaseMD))
1960 CXXMethodDecl::getCorrespondingMethodDeclaredInClass(const CXXRecordDecl *RD,
1962 if (this->getParent()->getCanonicalDecl() == RD->getCanonicalDecl())
1965 // Lookup doesn't work for destructors, so handle them separately.
1966 if (isa<CXXDestructorDecl>(this)) {
1967 CXXMethodDecl *MD = RD->getDestructor();
1969 if (recursivelyOverrides(MD, this))
1971 if (MayBeBase && recursivelyOverrides(this, MD))
1977 for (auto *ND : RD->lookup(getDeclName())) {
1978 auto *MD = dyn_cast<CXXMethodDecl>(ND);
1981 if (recursivelyOverrides(MD, this))
1983 if (MayBeBase && recursivelyOverrides(this, MD))
1991 CXXMethodDecl::getCorrespondingMethodInClass(const CXXRecordDecl *RD,
1993 if (auto *MD = getCorrespondingMethodDeclaredInClass(RD, MayBeBase))
1996 for (const auto &I : RD->bases()) {
1997 const RecordType *RT = I.getType()->getAs<RecordType>();
2000 const auto *Base = cast<CXXRecordDecl>(RT->getDecl());
2001 CXXMethodDecl *T = this->getCorrespondingMethodInClass(Base);
2009 CXXMethodDecl *CXXMethodDecl::Create(ASTContext &C, CXXRecordDecl *RD,
2010 SourceLocation StartLoc,
2011 const DeclarationNameInfo &NameInfo,
2012 QualType T, TypeSourceInfo *TInfo,
2013 StorageClass SC, bool isInline,
2014 ConstexprSpecKind ConstexprKind,
2015 SourceLocation EndLocation) {
2017 CXXMethodDecl(CXXMethod, C, RD, StartLoc, NameInfo, T, TInfo, SC,
2018 isInline, ConstexprKind, EndLocation);
2021 CXXMethodDecl *CXXMethodDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2022 return new (C, ID) CXXMethodDecl(
2023 CXXMethod, C, nullptr, SourceLocation(), DeclarationNameInfo(),
2024 QualType(), nullptr, SC_None, false, CSK_unspecified, SourceLocation());
2027 CXXMethodDecl *CXXMethodDecl::getDevirtualizedMethod(const Expr *Base,
2029 assert(isVirtual() && "this method is expected to be virtual");
2031 // When building with -fapple-kext, all calls must go through the vtable since
2032 // the kernel linker can do runtime patching of vtables.
2036 // If the member function is marked 'final', we know that it can't be
2037 // overridden and can therefore devirtualize it unless it's pure virtual.
2038 if (hasAttr<FinalAttr>())
2039 return isPure() ? nullptr : this;
2041 // If Base is unknown, we cannot devirtualize.
2045 // If the base expression (after skipping derived-to-base conversions) is a
2046 // class prvalue, then we can devirtualize.
2047 Base = Base->getBestDynamicClassTypeExpr();
2048 if (Base->isRValue() && Base->getType()->isRecordType())
2051 // If we don't even know what we would call, we can't devirtualize.
2052 const CXXRecordDecl *BestDynamicDecl = Base->getBestDynamicClassType();
2053 if (!BestDynamicDecl)
2056 // There may be a method corresponding to MD in a derived class.
2057 CXXMethodDecl *DevirtualizedMethod =
2058 getCorrespondingMethodInClass(BestDynamicDecl);
2060 // If that method is pure virtual, we can't devirtualize. If this code is
2061 // reached, the result would be UB, not a direct call to the derived class
2062 // function, and we can't assume the derived class function is defined.
2063 if (DevirtualizedMethod->isPure())
2066 // If that method is marked final, we can devirtualize it.
2067 if (DevirtualizedMethod->hasAttr<FinalAttr>())
2068 return DevirtualizedMethod;
2070 // Similarly, if the class itself is marked 'final' it can't be overridden
2071 // and we can therefore devirtualize the member function call.
2072 if (BestDynamicDecl->hasAttr<FinalAttr>())
2073 return DevirtualizedMethod;
2075 if (const auto *DRE = dyn_cast<DeclRefExpr>(Base)) {
2076 if (const auto *VD = dyn_cast<VarDecl>(DRE->getDecl()))
2077 if (VD->getType()->isRecordType())
2078 // This is a record decl. We know the type and can devirtualize it.
2079 return DevirtualizedMethod;
2084 // We can devirtualize calls on an object accessed by a class member access
2085 // expression, since by C++11 [basic.life]p6 we know that it can't refer to
2086 // a derived class object constructed in the same location.
2087 if (const auto *ME = dyn_cast<MemberExpr>(Base)) {
2088 const ValueDecl *VD = ME->getMemberDecl();
2089 return VD->getType()->isRecordType() ? DevirtualizedMethod : nullptr;
2092 // Likewise for calls on an object accessed by a (non-reference) pointer to
2094 if (auto *BO = dyn_cast<BinaryOperator>(Base)) {
2095 if (BO->isPtrMemOp()) {
2096 auto *MPT = BO->getRHS()->getType()->castAs<MemberPointerType>();
2097 if (MPT->getPointeeType()->isRecordType())
2098 return DevirtualizedMethod;
2102 // We can't devirtualize the call.
2106 bool CXXMethodDecl::isUsualDeallocationFunction(
2107 SmallVectorImpl<const FunctionDecl *> &PreventedBy) const {
2108 assert(PreventedBy.empty() && "PreventedBy is expected to be empty");
2109 if (getOverloadedOperator() != OO_Delete &&
2110 getOverloadedOperator() != OO_Array_Delete)
2113 // C++ [basic.stc.dynamic.deallocation]p2:
2114 // A template instance is never a usual deallocation function,
2115 // regardless of its signature.
2116 if (getPrimaryTemplate())
2119 // C++ [basic.stc.dynamic.deallocation]p2:
2120 // If a class T has a member deallocation function named operator delete
2121 // with exactly one parameter, then that function is a usual (non-placement)
2122 // deallocation function. [...]
2123 if (getNumParams() == 1)
2125 unsigned UsualParams = 1;
2128 // A destroying operator delete is a usual deallocation function if
2129 // removing the std::destroying_delete_t parameter and changing the
2130 // first parameter type from T* to void* results in the signature of
2131 // a usual deallocation function.
2132 if (isDestroyingOperatorDelete())
2135 // C++ <=14 [basic.stc.dynamic.deallocation]p2:
2136 // [...] If class T does not declare such an operator delete but does
2137 // declare a member deallocation function named operator delete with
2138 // exactly two parameters, the second of which has type std::size_t (18.1),
2139 // then this function is a usual deallocation function.
2141 // C++17 says a usual deallocation function is one with the signature
2142 // (void* [, size_t] [, std::align_val_t] [, ...])
2143 // and all such functions are usual deallocation functions. It's not clear
2144 // that allowing varargs functions was intentional.
2145 ASTContext &Context = getASTContext();
2146 if (UsualParams < getNumParams() &&
2147 Context.hasSameUnqualifiedType(getParamDecl(UsualParams)->getType(),
2148 Context.getSizeType()))
2151 if (UsualParams < getNumParams() &&
2152 getParamDecl(UsualParams)->getType()->isAlignValT())
2155 if (UsualParams != getNumParams())
2158 // In C++17 onwards, all potential usual deallocation functions are actual
2159 // usual deallocation functions. Honor this behavior when post-C++14
2160 // deallocation functions are offered as extensions too.
2161 // FIXME(EricWF): Destrying Delete should be a language option. How do we
2162 // handle when destroying delete is used prior to C++17?
2163 if (Context.getLangOpts().CPlusPlus17 ||
2164 Context.getLangOpts().AlignedAllocation ||
2165 isDestroyingOperatorDelete())
2168 // This function is a usual deallocation function if there are no
2169 // single-parameter deallocation functions of the same kind.
2170 DeclContext::lookup_result R = getDeclContext()->lookup(getDeclName());
2172 for (const auto *D : R) {
2173 if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
2174 if (FD->getNumParams() == 1) {
2175 PreventedBy.push_back(FD);
2183 bool CXXMethodDecl::isCopyAssignmentOperator() const {
2184 // C++0x [class.copy]p17:
2185 // A user-declared copy assignment operator X::operator= is a non-static
2186 // non-template member function of class X with exactly one parameter of
2187 // type X, X&, const X&, volatile X& or const volatile X&.
2188 if (/*operator=*/getOverloadedOperator() != OO_Equal ||
2189 /*non-static*/ isStatic() ||
2190 /*non-template*/getPrimaryTemplate() || getDescribedFunctionTemplate() ||
2191 getNumParams() != 1)
2194 QualType ParamType = getParamDecl(0)->getType();
2195 if (const auto *Ref = ParamType->getAs<LValueReferenceType>())
2196 ParamType = Ref->getPointeeType();
2198 ASTContext &Context = getASTContext();
2200 = Context.getCanonicalType(Context.getTypeDeclType(getParent()));
2201 return Context.hasSameUnqualifiedType(ClassType, ParamType);
2204 bool CXXMethodDecl::isMoveAssignmentOperator() const {
2205 // C++0x [class.copy]p19:
2206 // A user-declared move assignment operator X::operator= is a non-static
2207 // non-template member function of class X with exactly one parameter of type
2208 // X&&, const X&&, volatile X&&, or const volatile X&&.
2209 if (getOverloadedOperator() != OO_Equal || isStatic() ||
2210 getPrimaryTemplate() || getDescribedFunctionTemplate() ||
2211 getNumParams() != 1)
2214 QualType ParamType = getParamDecl(0)->getType();
2215 if (!isa<RValueReferenceType>(ParamType))
2217 ParamType = ParamType->getPointeeType();
2219 ASTContext &Context = getASTContext();
2221 = Context.getCanonicalType(Context.getTypeDeclType(getParent()));
2222 return Context.hasSameUnqualifiedType(ClassType, ParamType);
2225 void CXXMethodDecl::addOverriddenMethod(const CXXMethodDecl *MD) {
2226 assert(MD->isCanonicalDecl() && "Method is not canonical!");
2227 assert(!MD->getParent()->isDependentContext() &&
2228 "Can't add an overridden method to a class template!");
2229 assert(MD->isVirtual() && "Method is not virtual!");
2231 getASTContext().addOverriddenMethod(this, MD);
2234 CXXMethodDecl::method_iterator CXXMethodDecl::begin_overridden_methods() const {
2235 if (isa<CXXConstructorDecl>(this)) return nullptr;
2236 return getASTContext().overridden_methods_begin(this);
2239 CXXMethodDecl::method_iterator CXXMethodDecl::end_overridden_methods() const {
2240 if (isa<CXXConstructorDecl>(this)) return nullptr;
2241 return getASTContext().overridden_methods_end(this);
2244 unsigned CXXMethodDecl::size_overridden_methods() const {
2245 if (isa<CXXConstructorDecl>(this)) return 0;
2246 return getASTContext().overridden_methods_size(this);
2249 CXXMethodDecl::overridden_method_range
2250 CXXMethodDecl::overridden_methods() const {
2251 if (isa<CXXConstructorDecl>(this))
2252 return overridden_method_range(nullptr, nullptr);
2253 return getASTContext().overridden_methods(this);
2256 static QualType getThisObjectType(ASTContext &C, const FunctionProtoType *FPT,
2257 const CXXRecordDecl *Decl) {
2258 QualType ClassTy = C.getTypeDeclType(Decl);
2259 return C.getQualifiedType(ClassTy, FPT->getMethodQuals());
2262 QualType CXXMethodDecl::getThisType(const FunctionProtoType *FPT,
2263 const CXXRecordDecl *Decl) {
2264 ASTContext &C = Decl->getASTContext();
2265 QualType ObjectTy = ::getThisObjectType(C, FPT, Decl);
2266 return C.getPointerType(ObjectTy);
2269 QualType CXXMethodDecl::getThisObjectType(const FunctionProtoType *FPT,
2270 const CXXRecordDecl *Decl) {
2271 ASTContext &C = Decl->getASTContext();
2272 return ::getThisObjectType(C, FPT, Decl);
2275 QualType CXXMethodDecl::getThisType() const {
2276 // C++ 9.3.2p1: The type of this in a member function of a class X is X*.
2277 // If the member function is declared const, the type of this is const X*,
2278 // if the member function is declared volatile, the type of this is
2279 // volatile X*, and if the member function is declared const volatile,
2280 // the type of this is const volatile X*.
2281 assert(isInstance() && "No 'this' for static methods!");
2283 return CXXMethodDecl::getThisType(getType()->getAs<FunctionProtoType>(),
2287 QualType CXXMethodDecl::getThisObjectType() const {
2288 // Ditto getThisType.
2289 assert(isInstance() && "No 'this' for static methods!");
2291 return CXXMethodDecl::getThisObjectType(getType()->getAs<FunctionProtoType>(),
2295 bool CXXMethodDecl::hasInlineBody() const {
2296 // If this function is a template instantiation, look at the template from
2297 // which it was instantiated.
2298 const FunctionDecl *CheckFn = getTemplateInstantiationPattern();
2302 const FunctionDecl *fn;
2303 return CheckFn->isDefined(fn) && !fn->isOutOfLine() &&
2304 (fn->doesThisDeclarationHaveABody() || fn->willHaveBody());
2307 bool CXXMethodDecl::isLambdaStaticInvoker() const {
2308 const CXXRecordDecl *P = getParent();
2309 if (P->isLambda()) {
2310 if (const CXXMethodDecl *StaticInvoker = P->getLambdaStaticInvoker()) {
2311 if (StaticInvoker == this) return true;
2312 if (P->isGenericLambda() && this->isFunctionTemplateSpecialization())
2313 return StaticInvoker == this->getPrimaryTemplate()->getTemplatedDecl();
2319 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
2320 TypeSourceInfo *TInfo, bool IsVirtual,
2321 SourceLocation L, Expr *Init,
2323 SourceLocation EllipsisLoc)
2324 : Initializee(TInfo), MemberOrEllipsisLocation(EllipsisLoc), Init(Init),
2325 LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(IsVirtual),
2326 IsWritten(false), SourceOrder(0) {}
2328 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
2330 SourceLocation MemberLoc,
2331 SourceLocation L, Expr *Init,
2333 : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init),
2334 LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false),
2335 IsWritten(false), SourceOrder(0) {}
2337 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
2338 IndirectFieldDecl *Member,
2339 SourceLocation MemberLoc,
2340 SourceLocation L, Expr *Init,
2342 : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init),
2343 LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false),
2344 IsWritten(false), SourceOrder(0) {}
2346 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
2347 TypeSourceInfo *TInfo,
2348 SourceLocation L, Expr *Init,
2350 : Initializee(TInfo), Init(Init), LParenLoc(L), RParenLoc(R),
2351 IsDelegating(true), IsVirtual(false), IsWritten(false), SourceOrder(0) {}
2353 int64_t CXXCtorInitializer::getID(const ASTContext &Context) const {
2354 return Context.getAllocator()
2355 .identifyKnownAlignedObject<CXXCtorInitializer>(this);
2358 TypeLoc CXXCtorInitializer::getBaseClassLoc() const {
2359 if (isBaseInitializer())
2360 return Initializee.get<TypeSourceInfo*>()->getTypeLoc();
2365 const Type *CXXCtorInitializer::getBaseClass() const {
2366 if (isBaseInitializer())
2367 return Initializee.get<TypeSourceInfo*>()->getType().getTypePtr();
2372 SourceLocation CXXCtorInitializer::getSourceLocation() const {
2373 if (isInClassMemberInitializer())
2374 return getAnyMember()->getLocation();
2376 if (isAnyMemberInitializer())
2377 return getMemberLocation();
2379 if (const auto *TSInfo = Initializee.get<TypeSourceInfo *>())
2380 return TSInfo->getTypeLoc().getLocalSourceRange().getBegin();
2385 SourceRange CXXCtorInitializer::getSourceRange() const {
2386 if (isInClassMemberInitializer()) {
2387 FieldDecl *D = getAnyMember();
2388 if (Expr *I = D->getInClassInitializer())
2389 return I->getSourceRange();
2393 return SourceRange(getSourceLocation(), getRParenLoc());
2396 CXXConstructorDecl::CXXConstructorDecl(
2397 ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc,
2398 const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo,
2399 ExplicitSpecifier ES, bool isInline, bool isImplicitlyDeclared,
2400 ConstexprSpecKind ConstexprKind, InheritedConstructor Inherited)
2401 : CXXMethodDecl(CXXConstructor, C, RD, StartLoc, NameInfo, T, TInfo,
2402 SC_None, isInline, ConstexprKind, SourceLocation()) {
2403 setNumCtorInitializers(0);
2404 setInheritingConstructor(static_cast<bool>(Inherited));
2405 setImplicit(isImplicitlyDeclared);
2406 CXXConstructorDeclBits.HasTrailingExplicitSpecifier = ES.getExpr() ? 1 : 0;
2408 *getTrailingObjects<InheritedConstructor>() = Inherited;
2409 setExplicitSpecifier(ES);
2412 void CXXConstructorDecl::anchor() {}
2414 CXXConstructorDecl *CXXConstructorDecl::CreateDeserialized(ASTContext &C,
2416 uint64_t AllocKind) {
2417 bool hasTraillingExplicit = static_cast<bool>(AllocKind & TAKHasTailExplicit);
2418 bool isInheritingConstructor =
2419 static_cast<bool>(AllocKind & TAKInheritsConstructor);
2421 additionalSizeToAlloc<InheritedConstructor, ExplicitSpecifier>(
2422 isInheritingConstructor, hasTraillingExplicit);
2423 auto *Result = new (C, ID, Extra)
2424 CXXConstructorDecl(C, nullptr, SourceLocation(), DeclarationNameInfo(),
2425 QualType(), nullptr, ExplicitSpecifier(), false, false,
2426 CSK_unspecified, InheritedConstructor());
2427 Result->setInheritingConstructor(isInheritingConstructor);
2428 Result->CXXConstructorDeclBits.HasTrailingExplicitSpecifier =
2429 hasTraillingExplicit;
2430 Result->setExplicitSpecifier(ExplicitSpecifier());
2434 CXXConstructorDecl *CXXConstructorDecl::Create(
2435 ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc,
2436 const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo,
2437 ExplicitSpecifier ES, bool isInline, bool isImplicitlyDeclared,
2438 ConstexprSpecKind ConstexprKind, InheritedConstructor Inherited) {
2439 assert(NameInfo.getName().getNameKind()
2440 == DeclarationName::CXXConstructorName &&
2441 "Name must refer to a constructor");
2443 additionalSizeToAlloc<InheritedConstructor, ExplicitSpecifier>(
2444 Inherited ? 1 : 0, ES.getExpr() ? 1 : 0);
2445 return new (C, RD, Extra)
2446 CXXConstructorDecl(C, RD, StartLoc, NameInfo, T, TInfo, ES, isInline,
2447 isImplicitlyDeclared, ConstexprKind, Inherited);
2450 CXXConstructorDecl::init_const_iterator CXXConstructorDecl::init_begin() const {
2451 return CtorInitializers.get(getASTContext().getExternalSource());
2454 CXXConstructorDecl *CXXConstructorDecl::getTargetConstructor() const {
2455 assert(isDelegatingConstructor() && "Not a delegating constructor!");
2456 Expr *E = (*init_begin())->getInit()->IgnoreImplicit();
2457 if (const auto *Construct = dyn_cast<CXXConstructExpr>(E))
2458 return Construct->getConstructor();
2463 bool CXXConstructorDecl::isDefaultConstructor() const {
2464 // C++ [class.ctor]p5:
2465 // A default constructor for a class X is a constructor of class
2466 // X that can be called without an argument.
2467 return (getNumParams() == 0) ||
2468 (getNumParams() > 0 && getParamDecl(0)->hasDefaultArg());
2472 CXXConstructorDecl::isCopyConstructor(unsigned &TypeQuals) const {
2473 return isCopyOrMoveConstructor(TypeQuals) &&
2474 getParamDecl(0)->getType()->isLValueReferenceType();
2477 bool CXXConstructorDecl::isMoveConstructor(unsigned &TypeQuals) const {
2478 return isCopyOrMoveConstructor(TypeQuals) &&
2479 getParamDecl(0)->getType()->isRValueReferenceType();
2482 /// Determine whether this is a copy or move constructor.
2483 bool CXXConstructorDecl::isCopyOrMoveConstructor(unsigned &TypeQuals) const {
2484 // C++ [class.copy]p2:
2485 // A non-template constructor for class X is a copy constructor
2486 // if its first parameter is of type X&, const X&, volatile X& or
2487 // const volatile X&, and either there are no other parameters
2488 // or else all other parameters have default arguments (8.3.6).
2489 // C++0x [class.copy]p3:
2490 // A non-template constructor for class X is a move constructor if its
2491 // first parameter is of type X&&, const X&&, volatile X&&, or
2492 // const volatile X&&, and either there are no other parameters or else
2493 // all other parameters have default arguments.
2494 if ((getNumParams() < 1) ||
2495 (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
2496 (getPrimaryTemplate() != nullptr) ||
2497 (getDescribedFunctionTemplate() != nullptr))
2500 const ParmVarDecl *Param = getParamDecl(0);
2502 // Do we have a reference type?
2503 const auto *ParamRefType = Param->getType()->getAs<ReferenceType>();
2507 // Is it a reference to our class type?
2508 ASTContext &Context = getASTContext();
2510 CanQualType PointeeType
2511 = Context.getCanonicalType(ParamRefType->getPointeeType());
2513 = Context.getCanonicalType(Context.getTagDeclType(getParent()));
2514 if (PointeeType.getUnqualifiedType() != ClassTy)
2517 // FIXME: other qualifiers?
2519 // We have a copy or move constructor.
2520 TypeQuals = PointeeType.getCVRQualifiers();
2524 bool CXXConstructorDecl::isConvertingConstructor(bool AllowExplicit) const {
2525 // C++ [class.conv.ctor]p1:
2526 // A constructor declared without the function-specifier explicit
2527 // that can be called with a single parameter specifies a
2528 // conversion from the type of its first parameter to the type of
2529 // its class. Such a constructor is called a converting
2531 if (isExplicit() && !AllowExplicit)
2534 return (getNumParams() == 0 &&
2535 getType()->getAs<FunctionProtoType>()->isVariadic()) ||
2536 (getNumParams() == 1) ||
2537 (getNumParams() > 1 &&
2538 (getParamDecl(1)->hasDefaultArg() ||
2539 getParamDecl(1)->isParameterPack()));
2542 bool CXXConstructorDecl::isSpecializationCopyingObject() const {
2543 if ((getNumParams() < 1) ||
2544 (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
2545 (getDescribedFunctionTemplate() != nullptr))
2548 const ParmVarDecl *Param = getParamDecl(0);
2550 ASTContext &Context = getASTContext();
2551 CanQualType ParamType = Context.getCanonicalType(Param->getType());
2553 // Is it the same as our class type?
2555 = Context.getCanonicalType(Context.getTagDeclType(getParent()));
2556 if (ParamType.getUnqualifiedType() != ClassTy)
2562 void CXXDestructorDecl::anchor() {}
2565 CXXDestructorDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2567 CXXDestructorDecl(C, nullptr, SourceLocation(), DeclarationNameInfo(),
2568 QualType(), nullptr, false, false);
2572 CXXDestructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
2573 SourceLocation StartLoc,
2574 const DeclarationNameInfo &NameInfo,
2575 QualType T, TypeSourceInfo *TInfo,
2576 bool isInline, bool isImplicitlyDeclared) {
2577 assert(NameInfo.getName().getNameKind()
2578 == DeclarationName::CXXDestructorName &&
2579 "Name must refer to a destructor");
2580 return new (C, RD) CXXDestructorDecl(C, RD, StartLoc, NameInfo, T, TInfo,
2581 isInline, isImplicitlyDeclared);
2584 void CXXDestructorDecl::setOperatorDelete(FunctionDecl *OD, Expr *ThisArg) {
2585 auto *First = cast<CXXDestructorDecl>(getFirstDecl());
2586 if (OD && !First->OperatorDelete) {
2587 First->OperatorDelete = OD;
2588 First->OperatorDeleteThisArg = ThisArg;
2589 if (auto *L = getASTMutationListener())
2590 L->ResolvedOperatorDelete(First, OD, ThisArg);
2594 void CXXConversionDecl::anchor() {}
2597 CXXConversionDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2598 return new (C, ID) CXXConversionDecl(
2599 C, nullptr, SourceLocation(), DeclarationNameInfo(), QualType(), nullptr,
2600 false, ExplicitSpecifier(), CSK_unspecified, SourceLocation());
2603 CXXConversionDecl *CXXConversionDecl::Create(
2604 ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc,
2605 const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo,
2606 bool isInline, ExplicitSpecifier ES, ConstexprSpecKind ConstexprKind,
2607 SourceLocation EndLocation) {
2608 assert(NameInfo.getName().getNameKind()
2609 == DeclarationName::CXXConversionFunctionName &&
2610 "Name must refer to a conversion function");
2612 CXXConversionDecl(C, RD, StartLoc, NameInfo, T, TInfo, isInline, ES,
2613 ConstexprKind, EndLocation);
2616 bool CXXConversionDecl::isLambdaToBlockPointerConversion() const {
2617 return isImplicit() && getParent()->isLambda() &&
2618 getConversionType()->isBlockPointerType();
2621 LinkageSpecDecl::LinkageSpecDecl(DeclContext *DC, SourceLocation ExternLoc,
2622 SourceLocation LangLoc, LanguageIDs lang,
2624 : Decl(LinkageSpec, DC, LangLoc), DeclContext(LinkageSpec),
2625 ExternLoc(ExternLoc), RBraceLoc(SourceLocation()) {
2627 LinkageSpecDeclBits.HasBraces = HasBraces;
2630 void LinkageSpecDecl::anchor() {}
2632 LinkageSpecDecl *LinkageSpecDecl::Create(ASTContext &C,
2634 SourceLocation ExternLoc,
2635 SourceLocation LangLoc,
2638 return new (C, DC) LinkageSpecDecl(DC, ExternLoc, LangLoc, Lang, HasBraces);
2641 LinkageSpecDecl *LinkageSpecDecl::CreateDeserialized(ASTContext &C,
2643 return new (C, ID) LinkageSpecDecl(nullptr, SourceLocation(),
2644 SourceLocation(), lang_c, false);
2647 void UsingDirectiveDecl::anchor() {}
2649 UsingDirectiveDecl *UsingDirectiveDecl::Create(ASTContext &C, DeclContext *DC,
2651 SourceLocation NamespaceLoc,
2652 NestedNameSpecifierLoc QualifierLoc,
2653 SourceLocation IdentLoc,
2655 DeclContext *CommonAncestor) {
2656 if (auto *NS = dyn_cast_or_null<NamespaceDecl>(Used))
2657 Used = NS->getOriginalNamespace();
2658 return new (C, DC) UsingDirectiveDecl(DC, L, NamespaceLoc, QualifierLoc,
2659 IdentLoc, Used, CommonAncestor);
2662 UsingDirectiveDecl *UsingDirectiveDecl::CreateDeserialized(ASTContext &C,
2664 return new (C, ID) UsingDirectiveDecl(nullptr, SourceLocation(),
2666 NestedNameSpecifierLoc(),
2667 SourceLocation(), nullptr, nullptr);
2670 NamespaceDecl *UsingDirectiveDecl::getNominatedNamespace() {
2671 if (auto *NA = dyn_cast_or_null<NamespaceAliasDecl>(NominatedNamespace))
2672 return NA->getNamespace();
2673 return cast_or_null<NamespaceDecl>(NominatedNamespace);
2676 NamespaceDecl::NamespaceDecl(ASTContext &C, DeclContext *DC, bool Inline,
2677 SourceLocation StartLoc, SourceLocation IdLoc,
2678 IdentifierInfo *Id, NamespaceDecl *PrevDecl)
2679 : NamedDecl(Namespace, DC, IdLoc, Id), DeclContext(Namespace),
2680 redeclarable_base(C), LocStart(StartLoc),
2681 AnonOrFirstNamespaceAndInline(nullptr, Inline) {
2682 setPreviousDecl(PrevDecl);
2685 AnonOrFirstNamespaceAndInline.setPointer(PrevDecl->getOriginalNamespace());
2688 NamespaceDecl *NamespaceDecl::Create(ASTContext &C, DeclContext *DC,
2689 bool Inline, SourceLocation StartLoc,
2690 SourceLocation IdLoc, IdentifierInfo *Id,
2691 NamespaceDecl *PrevDecl) {
2692 return new (C, DC) NamespaceDecl(C, DC, Inline, StartLoc, IdLoc, Id,
2696 NamespaceDecl *NamespaceDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2697 return new (C, ID) NamespaceDecl(C, nullptr, false, SourceLocation(),
2698 SourceLocation(), nullptr, nullptr);
2701 NamespaceDecl *NamespaceDecl::getOriginalNamespace() {
2705 return AnonOrFirstNamespaceAndInline.getPointer();
2708 const NamespaceDecl *NamespaceDecl::getOriginalNamespace() const {
2712 return AnonOrFirstNamespaceAndInline.getPointer();
2715 bool NamespaceDecl::isOriginalNamespace() const { return isFirstDecl(); }
2717 NamespaceDecl *NamespaceDecl::getNextRedeclarationImpl() {
2718 return getNextRedeclaration();
2721 NamespaceDecl *NamespaceDecl::getPreviousDeclImpl() {
2722 return getPreviousDecl();
2725 NamespaceDecl *NamespaceDecl::getMostRecentDeclImpl() {
2726 return getMostRecentDecl();
2729 void NamespaceAliasDecl::anchor() {}
2731 NamespaceAliasDecl *NamespaceAliasDecl::getNextRedeclarationImpl() {
2732 return getNextRedeclaration();
2735 NamespaceAliasDecl *NamespaceAliasDecl::getPreviousDeclImpl() {
2736 return getPreviousDecl();
2739 NamespaceAliasDecl *NamespaceAliasDecl::getMostRecentDeclImpl() {
2740 return getMostRecentDecl();
2743 NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC,
2744 SourceLocation UsingLoc,
2745 SourceLocation AliasLoc,
2746 IdentifierInfo *Alias,
2747 NestedNameSpecifierLoc QualifierLoc,
2748 SourceLocation IdentLoc,
2749 NamedDecl *Namespace) {
2750 // FIXME: Preserve the aliased namespace as written.
2751 if (auto *NS = dyn_cast_or_null<NamespaceDecl>(Namespace))
2752 Namespace = NS->getOriginalNamespace();
2753 return new (C, DC) NamespaceAliasDecl(C, DC, UsingLoc, AliasLoc, Alias,
2754 QualifierLoc, IdentLoc, Namespace);
2757 NamespaceAliasDecl *
2758 NamespaceAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2759 return new (C, ID) NamespaceAliasDecl(C, nullptr, SourceLocation(),
2760 SourceLocation(), nullptr,
2761 NestedNameSpecifierLoc(),
2762 SourceLocation(), nullptr);
2765 void UsingShadowDecl::anchor() {}
2767 UsingShadowDecl::UsingShadowDecl(Kind K, ASTContext &C, DeclContext *DC,
2768 SourceLocation Loc, UsingDecl *Using,
2770 : NamedDecl(K, DC, Loc, Using ? Using->getDeclName() : DeclarationName()),
2771 redeclarable_base(C), UsingOrNextShadow(cast<NamedDecl>(Using)) {
2773 setTargetDecl(Target);
2777 UsingShadowDecl::UsingShadowDecl(Kind K, ASTContext &C, EmptyShell Empty)
2778 : NamedDecl(K, nullptr, SourceLocation(), DeclarationName()),
2779 redeclarable_base(C) {}
2782 UsingShadowDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2783 return new (C, ID) UsingShadowDecl(UsingShadow, C, EmptyShell());
2786 UsingDecl *UsingShadowDecl::getUsingDecl() const {
2787 const UsingShadowDecl *Shadow = this;
2788 while (const auto *NextShadow =
2789 dyn_cast<UsingShadowDecl>(Shadow->UsingOrNextShadow))
2790 Shadow = NextShadow;
2791 return cast<UsingDecl>(Shadow->UsingOrNextShadow);
2794 void ConstructorUsingShadowDecl::anchor() {}
2796 ConstructorUsingShadowDecl *
2797 ConstructorUsingShadowDecl::Create(ASTContext &C, DeclContext *DC,
2798 SourceLocation Loc, UsingDecl *Using,
2799 NamedDecl *Target, bool IsVirtual) {
2800 return new (C, DC) ConstructorUsingShadowDecl(C, DC, Loc, Using, Target,
2804 ConstructorUsingShadowDecl *
2805 ConstructorUsingShadowDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2806 return new (C, ID) ConstructorUsingShadowDecl(C, EmptyShell());
2809 CXXRecordDecl *ConstructorUsingShadowDecl::getNominatedBaseClass() const {
2810 return getUsingDecl()->getQualifier()->getAsRecordDecl();
2813 void UsingDecl::anchor() {}
2815 void UsingDecl::addShadowDecl(UsingShadowDecl *S) {
2816 assert(std::find(shadow_begin(), shadow_end(), S) == shadow_end() &&
2817 "declaration already in set");
2818 assert(S->getUsingDecl() == this);
2820 if (FirstUsingShadow.getPointer())
2821 S->UsingOrNextShadow = FirstUsingShadow.getPointer();
2822 FirstUsingShadow.setPointer(S);
2825 void UsingDecl::removeShadowDecl(UsingShadowDecl *S) {
2826 assert(std::find(shadow_begin(), shadow_end(), S) != shadow_end() &&
2827 "declaration not in set");
2828 assert(S->getUsingDecl() == this);
2830 // Remove S from the shadow decl chain. This is O(n) but hopefully rare.
2832 if (FirstUsingShadow.getPointer() == S) {
2833 FirstUsingShadow.setPointer(
2834 dyn_cast<UsingShadowDecl>(S->UsingOrNextShadow));
2835 S->UsingOrNextShadow = this;
2839 UsingShadowDecl *Prev = FirstUsingShadow.getPointer();
2840 while (Prev->UsingOrNextShadow != S)
2841 Prev = cast<UsingShadowDecl>(Prev->UsingOrNextShadow);
2842 Prev->UsingOrNextShadow = S->UsingOrNextShadow;
2843 S->UsingOrNextShadow = this;
2846 UsingDecl *UsingDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation UL,
2847 NestedNameSpecifierLoc QualifierLoc,
2848 const DeclarationNameInfo &NameInfo,
2850 return new (C, DC) UsingDecl(DC, UL, QualifierLoc, NameInfo, HasTypename);
2853 UsingDecl *UsingDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2854 return new (C, ID) UsingDecl(nullptr, SourceLocation(),
2855 NestedNameSpecifierLoc(), DeclarationNameInfo(),
2859 SourceRange UsingDecl::getSourceRange() const {
2860 SourceLocation Begin = isAccessDeclaration()
2861 ? getQualifierLoc().getBeginLoc() : UsingLocation;
2862 return SourceRange(Begin, getNameInfo().getEndLoc());
2865 void UsingPackDecl::anchor() {}
2867 UsingPackDecl *UsingPackDecl::Create(ASTContext &C, DeclContext *DC,
2868 NamedDecl *InstantiatedFrom,
2869 ArrayRef<NamedDecl *> UsingDecls) {
2870 size_t Extra = additionalSizeToAlloc<NamedDecl *>(UsingDecls.size());
2871 return new (C, DC, Extra) UsingPackDecl(DC, InstantiatedFrom, UsingDecls);
2874 UsingPackDecl *UsingPackDecl::CreateDeserialized(ASTContext &C, unsigned ID,
2875 unsigned NumExpansions) {
2876 size_t Extra = additionalSizeToAlloc<NamedDecl *>(NumExpansions);
2877 auto *Result = new (C, ID, Extra) UsingPackDecl(nullptr, nullptr, None);
2878 Result->NumExpansions = NumExpansions;
2879 auto *Trail = Result->getTrailingObjects<NamedDecl *>();
2880 for (unsigned I = 0; I != NumExpansions; ++I)
2881 new (Trail + I) NamedDecl*(nullptr);
2885 void UnresolvedUsingValueDecl::anchor() {}
2887 UnresolvedUsingValueDecl *
2888 UnresolvedUsingValueDecl::Create(ASTContext &C, DeclContext *DC,
2889 SourceLocation UsingLoc,
2890 NestedNameSpecifierLoc QualifierLoc,
2891 const DeclarationNameInfo &NameInfo,
2892 SourceLocation EllipsisLoc) {
2893 return new (C, DC) UnresolvedUsingValueDecl(DC, C.DependentTy, UsingLoc,
2894 QualifierLoc, NameInfo,
2898 UnresolvedUsingValueDecl *
2899 UnresolvedUsingValueDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2900 return new (C, ID) UnresolvedUsingValueDecl(nullptr, QualType(),
2902 NestedNameSpecifierLoc(),
2903 DeclarationNameInfo(),
2907 SourceRange UnresolvedUsingValueDecl::getSourceRange() const {
2908 SourceLocation Begin = isAccessDeclaration()
2909 ? getQualifierLoc().getBeginLoc() : UsingLocation;
2910 return SourceRange(Begin, getNameInfo().getEndLoc());
2913 void UnresolvedUsingTypenameDecl::anchor() {}
2915 UnresolvedUsingTypenameDecl *
2916 UnresolvedUsingTypenameDecl::Create(ASTContext &C, DeclContext *DC,
2917 SourceLocation UsingLoc,
2918 SourceLocation TypenameLoc,
2919 NestedNameSpecifierLoc QualifierLoc,
2920 SourceLocation TargetNameLoc,
2921 DeclarationName TargetName,
2922 SourceLocation EllipsisLoc) {
2923 return new (C, DC) UnresolvedUsingTypenameDecl(
2924 DC, UsingLoc, TypenameLoc, QualifierLoc, TargetNameLoc,
2925 TargetName.getAsIdentifierInfo(), EllipsisLoc);
2928 UnresolvedUsingTypenameDecl *
2929 UnresolvedUsingTypenameDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2930 return new (C, ID) UnresolvedUsingTypenameDecl(
2931 nullptr, SourceLocation(), SourceLocation(), NestedNameSpecifierLoc(),
2932 SourceLocation(), nullptr, SourceLocation());
2935 void StaticAssertDecl::anchor() {}
2937 StaticAssertDecl *StaticAssertDecl::Create(ASTContext &C, DeclContext *DC,
2938 SourceLocation StaticAssertLoc,
2940 StringLiteral *Message,
2941 SourceLocation RParenLoc,
2943 return new (C, DC) StaticAssertDecl(DC, StaticAssertLoc, AssertExpr, Message,
2947 StaticAssertDecl *StaticAssertDecl::CreateDeserialized(ASTContext &C,
2949 return new (C, ID) StaticAssertDecl(nullptr, SourceLocation(), nullptr,
2950 nullptr, SourceLocation(), false);
2953 void BindingDecl::anchor() {}
2955 BindingDecl *BindingDecl::Create(ASTContext &C, DeclContext *DC,
2956 SourceLocation IdLoc, IdentifierInfo *Id) {
2957 return new (C, DC) BindingDecl(DC, IdLoc, Id);
2960 BindingDecl *BindingDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2961 return new (C, ID) BindingDecl(nullptr, SourceLocation(), nullptr);
2964 ValueDecl *BindingDecl::getDecomposedDecl() const {
2965 ExternalASTSource *Source =
2966 Decomp.isOffset() ? getASTContext().getExternalSource() : nullptr;
2967 return cast_or_null<ValueDecl>(Decomp.get(Source));
2970 VarDecl *BindingDecl::getHoldingVar() const {
2971 Expr *B = getBinding();
2974 auto *DRE = dyn_cast<DeclRefExpr>(B->IgnoreImplicit());
2978 auto *VD = dyn_cast<VarDecl>(DRE->getDecl());
2979 assert(VD->isImplicit() && "holding var for binding decl not implicit");
2983 void DecompositionDecl::anchor() {}
2985 DecompositionDecl *DecompositionDecl::Create(ASTContext &C, DeclContext *DC,
2986 SourceLocation StartLoc,
2987 SourceLocation LSquareLoc,
2988 QualType T, TypeSourceInfo *TInfo,
2990 ArrayRef<BindingDecl *> Bindings) {
2991 size_t Extra = additionalSizeToAlloc<BindingDecl *>(Bindings.size());
2992 return new (C, DC, Extra)
2993 DecompositionDecl(C, DC, StartLoc, LSquareLoc, T, TInfo, SC, Bindings);
2996 DecompositionDecl *DecompositionDecl::CreateDeserialized(ASTContext &C,
2998 unsigned NumBindings) {
2999 size_t Extra = additionalSizeToAlloc<BindingDecl *>(NumBindings);
3000 auto *Result = new (C, ID, Extra)
3001 DecompositionDecl(C, nullptr, SourceLocation(), SourceLocation(),
3002 QualType(), nullptr, StorageClass(), None);
3003 // Set up and clean out the bindings array.
3004 Result->NumBindings = NumBindings;
3005 auto *Trail = Result->getTrailingObjects<BindingDecl *>();
3006 for (unsigned I = 0; I != NumBindings; ++I)
3007 new (Trail + I) BindingDecl*(nullptr);
3011 void DecompositionDecl::printName(llvm::raw_ostream &os) const {
3014 for (const auto *B : bindings()) {
3023 void MSPropertyDecl::anchor() {}
3025 MSPropertyDecl *MSPropertyDecl::Create(ASTContext &C, DeclContext *DC,
3026 SourceLocation L, DeclarationName N,
3027 QualType T, TypeSourceInfo *TInfo,
3028 SourceLocation StartL,
3029 IdentifierInfo *Getter,
3030 IdentifierInfo *Setter) {
3031 return new (C, DC) MSPropertyDecl(DC, L, N, T, TInfo, StartL, Getter, Setter);
3034 MSPropertyDecl *MSPropertyDecl::CreateDeserialized(ASTContext &C,
3036 return new (C, ID) MSPropertyDecl(nullptr, SourceLocation(),
3037 DeclarationName(), QualType(), nullptr,
3038 SourceLocation(), nullptr, nullptr);
3041 static const char *getAccessName(AccessSpecifier AS) {
3044 llvm_unreachable("Invalid access specifier!");
3052 llvm_unreachable("Invalid access specifier!");
3055 const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
3056 AccessSpecifier AS) {
3057 return DB << getAccessName(AS);
3060 const PartialDiagnostic &clang::operator<<(const PartialDiagnostic &DB,
3061 AccessSpecifier AS) {
3062 return DB << getAccessName(AS);