1 //===--- DeclCXX.cpp - C++ Declaration AST Node Implementation ------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the C++ related Decl classes.
12 //===----------------------------------------------------------------------===//
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/CXXInheritance.h"
18 #include "clang/AST/DeclTemplate.h"
19 #include "clang/AST/Expr.h"
20 #include "clang/AST/ExprCXX.h"
21 #include "clang/AST/ODRHash.h"
22 #include "clang/AST/TypeLoc.h"
23 #include "clang/Basic/IdentifierTable.h"
24 #include "llvm/ADT/STLExtras.h"
25 #include "llvm/ADT/SmallPtrSet.h"
26 using namespace clang;
28 //===----------------------------------------------------------------------===//
29 // Decl Allocation/Deallocation Method Implementations
30 //===----------------------------------------------------------------------===//
32 void AccessSpecDecl::anchor() { }
34 AccessSpecDecl *AccessSpecDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
35 return new (C, ID) AccessSpecDecl(EmptyShell());
38 void LazyASTUnresolvedSet::getFromExternalSource(ASTContext &C) const {
39 ExternalASTSource *Source = C.getExternalSource();
40 assert(Impl.Decls.isLazy() && "getFromExternalSource for non-lazy set");
41 assert(Source && "getFromExternalSource with no external source");
43 for (ASTUnresolvedSet::iterator I = Impl.begin(); I != Impl.end(); ++I)
44 I.setDecl(cast<NamedDecl>(Source->GetExternalDecl(
45 reinterpret_cast<uintptr_t>(I.getDecl()) >> 2)));
46 Impl.Decls.setLazy(false);
49 CXXRecordDecl::DefinitionData::DefinitionData(CXXRecordDecl *D)
50 : UserDeclaredConstructor(false), UserDeclaredSpecialMembers(0),
51 Aggregate(true), PlainOldData(true), Empty(true), Polymorphic(false),
52 Abstract(false), IsStandardLayout(true), HasNoNonEmptyBases(true),
53 HasPrivateFields(false), HasProtectedFields(false),
54 HasPublicFields(false), HasMutableFields(false), HasVariantMembers(false),
55 HasOnlyCMembers(true), HasInClassInitializer(false),
56 HasUninitializedReferenceMember(false), HasUninitializedFields(false),
57 HasInheritedConstructor(false), HasInheritedAssignment(false),
58 NeedOverloadResolutionForCopyConstructor(false),
59 NeedOverloadResolutionForMoveConstructor(false),
60 NeedOverloadResolutionForMoveAssignment(false),
61 NeedOverloadResolutionForDestructor(false),
62 DefaultedCopyConstructorIsDeleted(false),
63 DefaultedMoveConstructorIsDeleted(false),
64 DefaultedMoveAssignmentIsDeleted(false),
65 DefaultedDestructorIsDeleted(false), HasTrivialSpecialMembers(SMF_All),
66 DeclaredNonTrivialSpecialMembers(0), HasIrrelevantDestructor(true),
67 HasConstexprNonCopyMoveConstructor(false),
68 HasDefaultedDefaultConstructor(false),
69 CanPassInRegisters(true),
70 DefaultedDefaultConstructorIsConstexpr(true),
71 HasConstexprDefaultConstructor(false),
72 HasNonLiteralTypeFieldsOrBases(false), ComputedVisibleConversions(false),
73 UserProvidedDefaultConstructor(false), DeclaredSpecialMembers(0),
74 ImplicitCopyConstructorCanHaveConstParamForVBase(true),
75 ImplicitCopyConstructorCanHaveConstParamForNonVBase(true),
76 ImplicitCopyAssignmentHasConstParam(true),
77 HasDeclaredCopyConstructorWithConstParam(false),
78 HasDeclaredCopyAssignmentWithConstParam(false), IsLambda(false),
79 IsParsingBaseSpecifiers(false), HasODRHash(false), ODRHash(0),
80 NumBases(0), NumVBases(0), Bases(), VBases(), Definition(D),
83 CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getBasesSlowCase() const {
84 return Bases.get(Definition->getASTContext().getExternalSource());
87 CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getVBasesSlowCase() const {
88 return VBases.get(Definition->getASTContext().getExternalSource());
91 CXXRecordDecl::CXXRecordDecl(Kind K, TagKind TK, const ASTContext &C,
92 DeclContext *DC, SourceLocation StartLoc,
93 SourceLocation IdLoc, IdentifierInfo *Id,
94 CXXRecordDecl *PrevDecl)
95 : RecordDecl(K, TK, C, DC, StartLoc, IdLoc, Id, PrevDecl),
96 DefinitionData(PrevDecl ? PrevDecl->DefinitionData
98 TemplateOrInstantiation() {}
100 CXXRecordDecl *CXXRecordDecl::Create(const ASTContext &C, TagKind TK,
101 DeclContext *DC, SourceLocation StartLoc,
102 SourceLocation IdLoc, IdentifierInfo *Id,
103 CXXRecordDecl* PrevDecl,
104 bool DelayTypeCreation) {
105 CXXRecordDecl *R = new (C, DC) CXXRecordDecl(CXXRecord, TK, C, DC, StartLoc,
106 IdLoc, Id, PrevDecl);
107 R->MayHaveOutOfDateDef = C.getLangOpts().Modules;
109 // FIXME: DelayTypeCreation seems like such a hack
110 if (!DelayTypeCreation)
111 C.getTypeDeclType(R, PrevDecl);
116 CXXRecordDecl::CreateLambda(const ASTContext &C, DeclContext *DC,
117 TypeSourceInfo *Info, SourceLocation Loc,
118 bool Dependent, bool IsGeneric,
119 LambdaCaptureDefault CaptureDefault) {
121 new (C, DC) CXXRecordDecl(CXXRecord, TTK_Class, C, DC, Loc, Loc,
123 R->IsBeingDefined = true;
125 new (C) struct LambdaDefinitionData(R, Info, Dependent, IsGeneric,
127 R->MayHaveOutOfDateDef = false;
128 R->setImplicit(true);
129 C.getTypeDeclType(R, /*PrevDecl=*/nullptr);
134 CXXRecordDecl::CreateDeserialized(const ASTContext &C, unsigned ID) {
135 CXXRecordDecl *R = new (C, ID) CXXRecordDecl(
136 CXXRecord, TTK_Struct, C, nullptr, SourceLocation(), SourceLocation(),
138 R->MayHaveOutOfDateDef = false;
143 CXXRecordDecl::setBases(CXXBaseSpecifier const * const *Bases,
145 ASTContext &C = getASTContext();
147 if (!data().Bases.isOffset() && data().NumBases > 0)
148 C.Deallocate(data().getBases());
151 if (!C.getLangOpts().CPlusPlus1z) {
152 // C++ [dcl.init.aggr]p1:
153 // An aggregate is [...] a class with [...] no base classes [...].
154 data().Aggregate = false;
158 // A POD-struct is an aggregate class...
159 data().PlainOldData = false;
162 // The set of seen virtual base types.
163 llvm::SmallPtrSet<CanQualType, 8> SeenVBaseTypes;
165 // The virtual bases of this class.
166 SmallVector<const CXXBaseSpecifier *, 8> VBases;
168 data().Bases = new(C) CXXBaseSpecifier [NumBases];
169 data().NumBases = NumBases;
170 for (unsigned i = 0; i < NumBases; ++i) {
171 data().getBases()[i] = *Bases[i];
172 // Keep track of inherited vbases for this base class.
173 const CXXBaseSpecifier *Base = Bases[i];
174 QualType BaseType = Base->getType();
175 // Skip dependent types; we can't do any checking on them now.
176 if (BaseType->isDependentType())
178 CXXRecordDecl *BaseClassDecl
179 = cast<CXXRecordDecl>(BaseType->getAs<RecordType>()->getDecl());
181 if (!BaseClassDecl->isEmpty()) {
184 // A standard-layout class is a class that:
186 // -- either has no non-static data members in the most derived
187 // class and at most one base class with non-static data members,
188 // or has no base classes with non-static data members, and
189 // If this is the second non-empty base, then neither of these two
190 // clauses can be true.
191 data().IsStandardLayout = false;
194 // C++14 [meta.unary.prop]p4:
195 // T is a class type [...] with [...] no base class B for which
196 // is_empty<B>::value is false.
197 data().Empty = false;
198 data().HasNoNonEmptyBases = false;
201 // C++1z [dcl.init.agg]p1:
202 // An aggregate is a class with [...] no private or protected base classes
203 if (Base->getAccessSpecifier() != AS_public)
204 data().Aggregate = false;
206 // C++ [class.virtual]p1:
207 // A class that declares or inherits a virtual function is called a
208 // polymorphic class.
209 if (BaseClassDecl->isPolymorphic())
210 data().Polymorphic = true;
213 // A standard-layout class is a class that: [...]
214 // -- has no non-standard-layout base classes
215 if (!BaseClassDecl->isStandardLayout())
216 data().IsStandardLayout = false;
218 // Record if this base is the first non-literal field or base.
219 if (!hasNonLiteralTypeFieldsOrBases() && !BaseType->isLiteralType(C))
220 data().HasNonLiteralTypeFieldsOrBases = true;
222 // Now go through all virtual bases of this base and add them.
223 for (const auto &VBase : BaseClassDecl->vbases()) {
224 // Add this base if it's not already in the list.
225 if (SeenVBaseTypes.insert(C.getCanonicalType(VBase.getType())).second) {
226 VBases.push_back(&VBase);
228 // C++11 [class.copy]p8:
229 // The implicitly-declared copy constructor for a class X will have
230 // the form 'X::X(const X&)' if each [...] virtual base class B of X
231 // has a copy constructor whose first parameter is of type
232 // 'const B&' or 'const volatile B&' [...]
233 if (CXXRecordDecl *VBaseDecl = VBase.getType()->getAsCXXRecordDecl())
234 if (!VBaseDecl->hasCopyConstructorWithConstParam())
235 data().ImplicitCopyConstructorCanHaveConstParamForVBase = false;
237 // C++1z [dcl.init.agg]p1:
238 // An aggregate is a class with [...] no virtual base classes
239 data().Aggregate = false;
243 if (Base->isVirtual()) {
244 // Add this base if it's not already in the list.
245 if (SeenVBaseTypes.insert(C.getCanonicalType(BaseType)).second)
246 VBases.push_back(Base);
248 // C++14 [meta.unary.prop] is_empty:
249 // T is a class type, but not a union type, with ... no virtual base
251 data().Empty = false;
253 // C++1z [dcl.init.agg]p1:
254 // An aggregate is a class with [...] no virtual base classes
255 data().Aggregate = false;
257 // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25:
258 // A [default constructor, copy/move constructor, or copy/move assignment
259 // operator for a class X] is trivial [...] if:
260 // -- class X has [...] no virtual base classes
261 data().HasTrivialSpecialMembers &= SMF_Destructor;
264 // A standard-layout class is a class that: [...]
265 // -- has [...] no virtual base classes
266 data().IsStandardLayout = false;
268 // C++11 [dcl.constexpr]p4:
269 // In the definition of a constexpr constructor [...]
270 // -- the class shall not have any virtual base classes
271 data().DefaultedDefaultConstructorIsConstexpr = false;
273 // C++1z [class.copy]p8:
274 // The implicitly-declared copy constructor for a class X will have
275 // the form 'X::X(const X&)' if each potentially constructed subobject
276 // has a copy constructor whose first parameter is of type
277 // 'const B&' or 'const volatile B&' [...]
278 if (!BaseClassDecl->hasCopyConstructorWithConstParam())
279 data().ImplicitCopyConstructorCanHaveConstParamForVBase = false;
281 // C++ [class.ctor]p5:
282 // A default constructor is trivial [...] if:
283 // -- all the direct base classes of its class have trivial default
285 if (!BaseClassDecl->hasTrivialDefaultConstructor())
286 data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor;
288 // C++0x [class.copy]p13:
289 // A copy/move constructor for class X is trivial if [...]
291 // -- the constructor selected to copy/move each direct base class
292 // subobject is trivial, and
293 if (!BaseClassDecl->hasTrivialCopyConstructor())
294 data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor;
295 // If the base class doesn't have a simple move constructor, we'll eagerly
296 // declare it and perform overload resolution to determine which function
297 // it actually calls. If it does have a simple move constructor, this
299 if (!BaseClassDecl->hasTrivialMoveConstructor())
300 data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor;
302 // C++0x [class.copy]p27:
303 // A copy/move assignment operator for class X is trivial if [...]
305 // -- the assignment operator selected to copy/move each direct base
306 // class subobject is trivial, and
307 if (!BaseClassDecl->hasTrivialCopyAssignment())
308 data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment;
309 // If the base class doesn't have a simple move assignment, we'll eagerly
310 // declare it and perform overload resolution to determine which function
311 // it actually calls. If it does have a simple move assignment, this
313 if (!BaseClassDecl->hasTrivialMoveAssignment())
314 data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment;
316 // C++11 [class.ctor]p6:
317 // If that user-written default constructor would satisfy the
318 // requirements of a constexpr constructor, the implicitly-defined
319 // default constructor is constexpr.
320 if (!BaseClassDecl->hasConstexprDefaultConstructor())
321 data().DefaultedDefaultConstructorIsConstexpr = false;
323 // C++1z [class.copy]p8:
324 // The implicitly-declared copy constructor for a class X will have
325 // the form 'X::X(const X&)' if each potentially constructed subobject
326 // has a copy constructor whose first parameter is of type
327 // 'const B&' or 'const volatile B&' [...]
328 if (!BaseClassDecl->hasCopyConstructorWithConstParam())
329 data().ImplicitCopyConstructorCanHaveConstParamForNonVBase = false;
332 // C++ [class.ctor]p3:
333 // A destructor is trivial if all the direct base classes of its class
334 // have trivial destructors.
335 if (!BaseClassDecl->hasTrivialDestructor())
336 data().HasTrivialSpecialMembers &= ~SMF_Destructor;
338 if (!BaseClassDecl->hasIrrelevantDestructor())
339 data().HasIrrelevantDestructor = false;
341 // C++11 [class.copy]p18:
342 // The implicitly-declared copy assignment oeprator for a class X will
343 // have the form 'X& X::operator=(const X&)' if each direct base class B
344 // of X has a copy assignment operator whose parameter is of type 'const
345 // B&', 'const volatile B&', or 'B' [...]
346 if (!BaseClassDecl->hasCopyAssignmentWithConstParam())
347 data().ImplicitCopyAssignmentHasConstParam = false;
349 // A class has an Objective-C object member if... or any of its bases
350 // has an Objective-C object member.
351 if (BaseClassDecl->hasObjectMember())
352 setHasObjectMember(true);
354 if (BaseClassDecl->hasVolatileMember())
355 setHasVolatileMember(true);
357 // Keep track of the presence of mutable fields.
358 if (BaseClassDecl->hasMutableFields()) {
359 data().HasMutableFields = true;
360 data().NeedOverloadResolutionForCopyConstructor = true;
363 if (BaseClassDecl->hasUninitializedReferenceMember())
364 data().HasUninitializedReferenceMember = true;
366 if (!BaseClassDecl->allowConstDefaultInit())
367 data().HasUninitializedFields = true;
369 addedClassSubobject(BaseClassDecl);
372 if (VBases.empty()) {
373 data().IsParsingBaseSpecifiers = false;
377 // Create base specifier for any direct or indirect virtual bases.
378 data().VBases = new (C) CXXBaseSpecifier[VBases.size()];
379 data().NumVBases = VBases.size();
380 for (int I = 0, E = VBases.size(); I != E; ++I) {
381 QualType Type = VBases[I]->getType();
382 if (!Type->isDependentType())
383 addedClassSubobject(Type->getAsCXXRecordDecl());
384 data().getVBases()[I] = *VBases[I];
387 data().IsParsingBaseSpecifiers = false;
390 unsigned CXXRecordDecl::getODRHash() const {
391 assert(hasDefinition() && "ODRHash only for records with definitions");
393 // Previously calculated hash is stored in DefinitionData.
394 if (DefinitionData->HasODRHash)
395 return DefinitionData->ODRHash;
397 // Only calculate hash on first call of getODRHash per record.
399 Hash.AddCXXRecordDecl(getDefinition());
400 DefinitionData->HasODRHash = true;
401 DefinitionData->ODRHash = Hash.CalculateHash();
403 return DefinitionData->ODRHash;
407 void CXXRecordDecl::addedClassSubobject(CXXRecordDecl *Subobj) {
408 // C++11 [class.copy]p11:
409 // A defaulted copy/move constructor for a class X is defined as
411 // -- a direct or virtual base class B that cannot be copied/moved [...]
412 // -- a non-static data member of class type M (or array thereof)
413 // that cannot be copied or moved [...]
414 if (!Subobj->hasSimpleCopyConstructor())
415 data().NeedOverloadResolutionForCopyConstructor = true;
416 if (!Subobj->hasSimpleMoveConstructor())
417 data().NeedOverloadResolutionForMoveConstructor = true;
419 // C++11 [class.copy]p23:
420 // A defaulted copy/move assignment operator for a class X is defined as
422 // -- a direct or virtual base class B that cannot be copied/moved [...]
423 // -- a non-static data member of class type M (or array thereof)
424 // that cannot be copied or moved [...]
425 if (!Subobj->hasSimpleMoveAssignment())
426 data().NeedOverloadResolutionForMoveAssignment = true;
428 // C++11 [class.ctor]p5, C++11 [class.copy]p11, C++11 [class.dtor]p5:
429 // A defaulted [ctor or dtor] for a class X is defined as
431 // -- any direct or virtual base class [...] has a type with a destructor
432 // that is deleted or inaccessible from the defaulted [ctor or dtor].
433 // -- any non-static data member has a type with a destructor
434 // that is deleted or inaccessible from the defaulted [ctor or dtor].
435 if (!Subobj->hasSimpleDestructor()) {
436 data().NeedOverloadResolutionForCopyConstructor = true;
437 data().NeedOverloadResolutionForMoveConstructor = true;
438 data().NeedOverloadResolutionForDestructor = true;
442 bool CXXRecordDecl::hasAnyDependentBases() const {
443 if (!isDependentContext())
446 return !forallBases([](const CXXRecordDecl *) { return true; });
449 bool CXXRecordDecl::isTriviallyCopyable() const {
451 // A trivially copyable class is a class that:
452 // -- has no non-trivial copy constructors,
453 if (hasNonTrivialCopyConstructor()) return false;
454 // -- has no non-trivial move constructors,
455 if (hasNonTrivialMoveConstructor()) return false;
456 // -- has no non-trivial copy assignment operators,
457 if (hasNonTrivialCopyAssignment()) return false;
458 // -- has no non-trivial move assignment operators, and
459 if (hasNonTrivialMoveAssignment()) return false;
460 // -- has a trivial destructor.
461 if (!hasTrivialDestructor()) return false;
466 void CXXRecordDecl::markedVirtualFunctionPure() {
467 // C++ [class.abstract]p2:
468 // A class is abstract if it has at least one pure virtual function.
469 data().Abstract = true;
472 void CXXRecordDecl::addedMember(Decl *D) {
473 if (!D->isImplicit() &&
474 !isa<FieldDecl>(D) &&
475 !isa<IndirectFieldDecl>(D) &&
476 (!isa<TagDecl>(D) || cast<TagDecl>(D)->getTagKind() == TTK_Class ||
477 cast<TagDecl>(D)->getTagKind() == TTK_Interface))
478 data().HasOnlyCMembers = false;
480 // Ignore friends and invalid declarations.
481 if (D->getFriendObjectKind() || D->isInvalidDecl())
484 FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(D);
486 D = FunTmpl->getTemplatedDecl();
488 // FIXME: Pass NamedDecl* to addedMember?
489 Decl *DUnderlying = D;
490 if (auto *ND = dyn_cast<NamedDecl>(DUnderlying)) {
491 DUnderlying = ND->getUnderlyingDecl();
492 if (FunctionTemplateDecl *UnderlyingFunTmpl =
493 dyn_cast<FunctionTemplateDecl>(DUnderlying))
494 DUnderlying = UnderlyingFunTmpl->getTemplatedDecl();
497 if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
498 if (Method->isVirtual()) {
499 // C++ [dcl.init.aggr]p1:
500 // An aggregate is an array or a class with [...] no virtual functions.
501 data().Aggregate = false;
504 // A POD-struct is an aggregate class...
505 data().PlainOldData = false;
507 // C++14 [meta.unary.prop]p4:
508 // T is a class type [...] with [...] no virtual member functions...
509 data().Empty = false;
511 // C++ [class.virtual]p1:
512 // A class that declares or inherits a virtual function is called a
513 // polymorphic class.
514 data().Polymorphic = true;
516 // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25:
517 // A [default constructor, copy/move constructor, or copy/move
518 // assignment operator for a class X] is trivial [...] if:
519 // -- class X has no virtual functions [...]
520 data().HasTrivialSpecialMembers &= SMF_Destructor;
523 // A standard-layout class is a class that: [...]
524 // -- has no virtual functions
525 data().IsStandardLayout = false;
529 // Notify the listener if an implicit member was added after the definition
531 if (!isBeingDefined() && D->isImplicit())
532 if (ASTMutationListener *L = getASTMutationListener())
533 L->AddedCXXImplicitMember(data().Definition, D);
535 // The kind of special member this declaration is, if any.
538 // Handle constructors.
539 if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) {
540 if (!Constructor->isImplicit()) {
541 // Note that we have a user-declared constructor.
542 data().UserDeclaredConstructor = true;
545 // A POD-struct is an aggregate class [...]
546 // Since the POD bit is meant to be C++03 POD-ness, clear it even if the
547 // type is technically an aggregate in C++0x since it wouldn't be in 03.
548 data().PlainOldData = false;
551 if (Constructor->isDefaultConstructor()) {
552 SMKind |= SMF_DefaultConstructor;
554 if (Constructor->isUserProvided())
555 data().UserProvidedDefaultConstructor = true;
556 if (Constructor->isConstexpr())
557 data().HasConstexprDefaultConstructor = true;
558 if (Constructor->isDefaulted())
559 data().HasDefaultedDefaultConstructor = true;
564 if (Constructor->isCopyConstructor(Quals)) {
565 SMKind |= SMF_CopyConstructor;
567 if (Quals & Qualifiers::Const)
568 data().HasDeclaredCopyConstructorWithConstParam = true;
569 } else if (Constructor->isMoveConstructor())
570 SMKind |= SMF_MoveConstructor;
573 // C++11 [dcl.init.aggr]p1: DR1518
574 // An aggregate is an array or a class with no user-provided, explicit, or
575 // inherited constructors
576 if (Constructor->isUserProvided() || Constructor->isExplicit())
577 data().Aggregate = false;
580 // Handle constructors, including those inherited from base classes.
581 if (CXXConstructorDecl *Constructor =
582 dyn_cast<CXXConstructorDecl>(DUnderlying)) {
583 // Record if we see any constexpr constructors which are neither copy
584 // nor move constructors.
585 // C++1z [basic.types]p10:
586 // [...] has at least one constexpr constructor or constructor template
587 // (possibly inherited from a base class) that is not a copy or move
589 if (Constructor->isConstexpr() && !Constructor->isCopyOrMoveConstructor())
590 data().HasConstexprNonCopyMoveConstructor = true;
593 // Handle destructors.
594 if (CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(D)) {
595 SMKind |= SMF_Destructor;
597 if (DD->isUserProvided())
598 data().HasIrrelevantDestructor = false;
599 // If the destructor is explicitly defaulted and not trivial or not public
600 // or if the destructor is deleted, we clear HasIrrelevantDestructor in
601 // finishedDefaultedOrDeletedMember.
603 // C++11 [class.dtor]p5:
604 // A destructor is trivial if [...] the destructor is not virtual.
606 data().HasTrivialSpecialMembers &= ~SMF_Destructor;
609 // Handle member functions.
610 if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
611 if (Method->isCopyAssignmentOperator()) {
612 SMKind |= SMF_CopyAssignment;
614 const ReferenceType *ParamTy =
615 Method->getParamDecl(0)->getType()->getAs<ReferenceType>();
616 if (!ParamTy || ParamTy->getPointeeType().isConstQualified())
617 data().HasDeclaredCopyAssignmentWithConstParam = true;
620 if (Method->isMoveAssignmentOperator())
621 SMKind |= SMF_MoveAssignment;
623 // Keep the list of conversion functions up-to-date.
624 if (CXXConversionDecl *Conversion = dyn_cast<CXXConversionDecl>(D)) {
625 // FIXME: We use the 'unsafe' accessor for the access specifier here,
626 // because Sema may not have set it yet. That's really just a misdesign
627 // in Sema. However, LLDB *will* have set the access specifier correctly,
628 // and adds declarations after the class is technically completed,
629 // so completeDefinition()'s overriding of the access specifiers doesn't
631 AccessSpecifier AS = Conversion->getAccessUnsafe();
633 if (Conversion->getPrimaryTemplate()) {
634 // We don't record specializations.
636 ASTContext &Ctx = getASTContext();
637 ASTUnresolvedSet &Conversions = data().Conversions.get(Ctx);
639 FunTmpl ? cast<NamedDecl>(FunTmpl) : cast<NamedDecl>(Conversion);
640 if (Primary->getPreviousDecl())
641 Conversions.replace(cast<NamedDecl>(Primary->getPreviousDecl()),
644 Conversions.addDecl(Ctx, Primary, AS);
649 // If this is the first declaration of a special member, we no longer have
650 // an implicit trivial special member.
651 data().HasTrivialSpecialMembers &=
652 data().DeclaredSpecialMembers | ~SMKind;
654 if (!Method->isImplicit() && !Method->isUserProvided()) {
655 // This method is user-declared but not user-provided. We can't work out
656 // whether it's trivial yet (not until we get to the end of the class).
657 // We'll handle this method in finishedDefaultedOrDeletedMember.
658 } else if (Method->isTrivial())
659 data().HasTrivialSpecialMembers |= SMKind;
661 data().DeclaredNonTrivialSpecialMembers |= SMKind;
663 // Note when we have declared a declared special member, and suppress the
664 // implicit declaration of this special member.
665 data().DeclaredSpecialMembers |= SMKind;
667 if (!Method->isImplicit()) {
668 data().UserDeclaredSpecialMembers |= SMKind;
671 // A POD-struct is an aggregate class that has [...] no user-defined
672 // copy assignment operator and no user-defined destructor.
674 // Since the POD bit is meant to be C++03 POD-ness, and in C++03,
675 // aggregates could not have any constructors, clear it even for an
676 // explicitly defaulted or deleted constructor.
677 // type is technically an aggregate in C++0x since it wouldn't be in 03.
679 // Also, a user-declared move assignment operator makes a class non-POD.
680 // This is an extension in C++03.
681 data().PlainOldData = false;
688 // Handle non-static data members.
689 if (FieldDecl *Field = dyn_cast<FieldDecl>(D)) {
690 // C++ [class.bit]p2:
691 // A declaration for a bit-field that omits the identifier declares an
692 // unnamed bit-field. Unnamed bit-fields are not members and cannot be
694 if (Field->isUnnamedBitfield())
697 // C++ [dcl.init.aggr]p1:
698 // An aggregate is an array or a class (clause 9) with [...] no
699 // private or protected non-static data members (clause 11).
701 // A POD must be an aggregate.
702 if (D->getAccess() == AS_private || D->getAccess() == AS_protected) {
703 data().Aggregate = false;
704 data().PlainOldData = false;
708 // A standard-layout class is a class that:
710 // -- has the same access control for all non-static data members,
711 switch (D->getAccess()) {
712 case AS_private: data().HasPrivateFields = true; break;
713 case AS_protected: data().HasProtectedFields = true; break;
714 case AS_public: data().HasPublicFields = true; break;
715 case AS_none: llvm_unreachable("Invalid access specifier");
717 if ((data().HasPrivateFields + data().HasProtectedFields +
718 data().HasPublicFields) > 1)
719 data().IsStandardLayout = false;
721 // Keep track of the presence of mutable fields.
722 if (Field->isMutable()) {
723 data().HasMutableFields = true;
724 data().NeedOverloadResolutionForCopyConstructor = true;
727 // C++11 [class.union]p8, DR1460:
728 // If X is a union, a non-static data member of X that is not an anonymous
729 // union is a variant member of X.
730 if (isUnion() && !Field->isAnonymousStructOrUnion())
731 data().HasVariantMembers = true;
734 // A POD struct is a class that is both a trivial class and a
735 // standard-layout class, and has no non-static data members of type
736 // non-POD struct, non-POD union (or array of such types).
738 // Automatic Reference Counting: the presence of a member of Objective-C pointer type
739 // that does not explicitly have no lifetime makes the class a non-POD.
740 ASTContext &Context = getASTContext();
741 QualType T = Context.getBaseElementType(Field->getType());
742 if (T->isObjCRetainableType() || T.isObjCGCStrong()) {
743 if (T.hasNonTrivialObjCLifetime()) {
744 // Objective-C Automatic Reference Counting:
745 // If a class has a non-static data member of Objective-C pointer
746 // type (or array thereof), it is a non-POD type and its
747 // default constructor (if any), copy constructor, move constructor,
748 // copy assignment operator, move assignment operator, and destructor are
750 setHasObjectMember(true);
751 struct DefinitionData &Data = data();
752 Data.PlainOldData = false;
753 Data.HasTrivialSpecialMembers = 0;
754 Data.HasIrrelevantDestructor = false;
755 } else if (!Context.getLangOpts().ObjCAutoRefCount) {
756 setHasObjectMember(true);
758 } else if (!T.isCXX98PODType(Context))
759 data().PlainOldData = false;
761 if (T->isReferenceType()) {
762 if (!Field->hasInClassInitializer())
763 data().HasUninitializedReferenceMember = true;
766 // A standard-layout class is a class that:
767 // -- has no non-static data members of type [...] reference,
768 data().IsStandardLayout = false;
770 // C++1z [class.copy.ctor]p10:
771 // A defaulted copy constructor for a class X is defined as deleted if X has:
772 // -- a non-static data member of rvalue reference type
773 if (T->isRValueReferenceType())
774 data().DefaultedCopyConstructorIsDeleted = true;
777 if (!Field->hasInClassInitializer() && !Field->isMutable()) {
778 if (CXXRecordDecl *FieldType = T->getAsCXXRecordDecl()) {
779 if (FieldType->hasDefinition() && !FieldType->allowConstDefaultInit())
780 data().HasUninitializedFields = true;
782 data().HasUninitializedFields = true;
786 // Record if this field is the first non-literal or volatile field or base.
787 if (!T->isLiteralType(Context) || T.isVolatileQualified())
788 data().HasNonLiteralTypeFieldsOrBases = true;
790 if (Field->hasInClassInitializer() ||
791 (Field->isAnonymousStructOrUnion() &&
792 Field->getType()->getAsCXXRecordDecl()->hasInClassInitializer())) {
793 data().HasInClassInitializer = true;
796 // A default constructor is trivial if [...] no non-static data member
797 // of its class has a brace-or-equal-initializer.
798 data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor;
800 // C++11 [dcl.init.aggr]p1:
801 // An aggregate is a [...] class with [...] no
802 // brace-or-equal-initializers for non-static data members.
804 // This rule was removed in C++14.
805 if (!getASTContext().getLangOpts().CPlusPlus14)
806 data().Aggregate = false;
809 // A POD struct is [...] a trivial class.
810 data().PlainOldData = false;
813 // C++11 [class.copy]p23:
814 // A defaulted copy/move assignment operator for a class X is defined
815 // as deleted if X has:
816 // -- a non-static data member of reference type
817 if (T->isReferenceType())
818 data().DefaultedMoveAssignmentIsDeleted = true;
820 if (const RecordType *RecordTy = T->getAs<RecordType>()) {
821 CXXRecordDecl* FieldRec = cast<CXXRecordDecl>(RecordTy->getDecl());
822 if (FieldRec->getDefinition()) {
823 addedClassSubobject(FieldRec);
825 // We may need to perform overload resolution to determine whether a
826 // field can be moved if it's const or volatile qualified.
827 if (T.getCVRQualifiers() & (Qualifiers::Const | Qualifiers::Volatile)) {
828 // We need to care about 'const' for the copy constructor because an
829 // implicit copy constructor might be declared with a non-const
831 data().NeedOverloadResolutionForCopyConstructor = true;
832 data().NeedOverloadResolutionForMoveConstructor = true;
833 data().NeedOverloadResolutionForMoveAssignment = true;
836 // C++11 [class.ctor]p5, C++11 [class.copy]p11:
837 // A defaulted [special member] for a class X is defined as
839 // -- X is a union-like class that has a variant member with a
840 // non-trivial [corresponding special member]
842 if (FieldRec->hasNonTrivialCopyConstructor())
843 data().DefaultedCopyConstructorIsDeleted = true;
844 if (FieldRec->hasNonTrivialMoveConstructor())
845 data().DefaultedMoveConstructorIsDeleted = true;
846 if (FieldRec->hasNonTrivialMoveAssignment())
847 data().DefaultedMoveAssignmentIsDeleted = true;
848 if (FieldRec->hasNonTrivialDestructor())
849 data().DefaultedDestructorIsDeleted = true;
852 // For an anonymous union member, our overload resolution will perform
853 // overload resolution for its members.
854 if (Field->isAnonymousStructOrUnion()) {
855 data().NeedOverloadResolutionForCopyConstructor |=
856 FieldRec->data().NeedOverloadResolutionForCopyConstructor;
857 data().NeedOverloadResolutionForMoveConstructor |=
858 FieldRec->data().NeedOverloadResolutionForMoveConstructor;
859 data().NeedOverloadResolutionForMoveAssignment |=
860 FieldRec->data().NeedOverloadResolutionForMoveAssignment;
861 data().NeedOverloadResolutionForDestructor |=
862 FieldRec->data().NeedOverloadResolutionForDestructor;
865 // C++0x [class.ctor]p5:
866 // A default constructor is trivial [...] if:
867 // -- for all the non-static data members of its class that are of
868 // class type (or array thereof), each such class has a trivial
869 // default constructor.
870 if (!FieldRec->hasTrivialDefaultConstructor())
871 data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor;
873 // C++0x [class.copy]p13:
874 // A copy/move constructor for class X is trivial if [...]
876 // -- for each non-static data member of X that is of class type (or
877 // an array thereof), the constructor selected to copy/move that
878 // member is trivial;
879 if (!FieldRec->hasTrivialCopyConstructor())
880 data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor;
881 // If the field doesn't have a simple move constructor, we'll eagerly
882 // declare the move constructor for this class and we'll decide whether
883 // it's trivial then.
884 if (!FieldRec->hasTrivialMoveConstructor())
885 data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor;
887 // C++0x [class.copy]p27:
888 // A copy/move assignment operator for class X is trivial if [...]
890 // -- for each non-static data member of X that is of class type (or
891 // an array thereof), the assignment operator selected to
892 // copy/move that member is trivial;
893 if (!FieldRec->hasTrivialCopyAssignment())
894 data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment;
895 // If the field doesn't have a simple move assignment, we'll eagerly
896 // declare the move assignment for this class and we'll decide whether
897 // it's trivial then.
898 if (!FieldRec->hasTrivialMoveAssignment())
899 data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment;
901 if (!FieldRec->hasTrivialDestructor())
902 data().HasTrivialSpecialMembers &= ~SMF_Destructor;
903 if (!FieldRec->hasIrrelevantDestructor())
904 data().HasIrrelevantDestructor = false;
905 if (FieldRec->hasObjectMember())
906 setHasObjectMember(true);
907 if (FieldRec->hasVolatileMember())
908 setHasVolatileMember(true);
911 // A standard-layout class is a class that:
912 // -- has no non-static data members of type non-standard-layout
913 // class (or array of such types) [...]
914 if (!FieldRec->isStandardLayout())
915 data().IsStandardLayout = false;
918 // A standard-layout class is a class that:
920 // -- has no base classes of the same type as the first non-static
922 // We don't want to expend bits in the state of the record decl
923 // tracking whether this is the first non-static data member so we
924 // cheat a bit and use some of the existing state: the empty bit.
925 // Virtual bases and virtual methods make a class non-empty, but they
926 // also make it non-standard-layout so we needn't check here.
927 // A non-empty base class may leave the class standard-layout, but not
928 // if we have arrived here, and have at least one non-static data
929 // member. If IsStandardLayout remains true, then the first non-static
930 // data member must come through here with Empty still true, and Empty
931 // will subsequently be set to false below.
932 if (data().IsStandardLayout && data().Empty) {
933 for (const auto &BI : bases()) {
934 if (Context.hasSameUnqualifiedType(BI.getType(), T)) {
935 data().IsStandardLayout = false;
941 // Keep track of the presence of mutable fields.
942 if (FieldRec->hasMutableFields()) {
943 data().HasMutableFields = true;
944 data().NeedOverloadResolutionForCopyConstructor = true;
947 // C++11 [class.copy]p13:
948 // If the implicitly-defined constructor would satisfy the
949 // requirements of a constexpr constructor, the implicitly-defined
950 // constructor is constexpr.
951 // C++11 [dcl.constexpr]p4:
952 // -- every constructor involved in initializing non-static data
953 // members [...] shall be a constexpr constructor
954 if (!Field->hasInClassInitializer() &&
955 !FieldRec->hasConstexprDefaultConstructor() && !isUnion())
956 // The standard requires any in-class initializer to be a constant
957 // expression. We consider this to be a defect.
958 data().DefaultedDefaultConstructorIsConstexpr = false;
960 // C++11 [class.copy]p8:
961 // The implicitly-declared copy constructor for a class X will have
962 // the form 'X::X(const X&)' if each potentially constructed subobject
963 // of a class type M (or array thereof) has a copy constructor whose
964 // first parameter is of type 'const M&' or 'const volatile M&'.
965 if (!FieldRec->hasCopyConstructorWithConstParam())
966 data().ImplicitCopyConstructorCanHaveConstParamForNonVBase = false;
968 // C++11 [class.copy]p18:
969 // The implicitly-declared copy assignment oeprator for a class X will
970 // have the form 'X& X::operator=(const X&)' if [...] for all the
971 // non-static data members of X that are of a class type M (or array
972 // thereof), each such class type has a copy assignment operator whose
973 // parameter is of type 'const M&', 'const volatile M&' or 'M'.
974 if (!FieldRec->hasCopyAssignmentWithConstParam())
975 data().ImplicitCopyAssignmentHasConstParam = false;
977 if (FieldRec->hasUninitializedReferenceMember() &&
978 !Field->hasInClassInitializer())
979 data().HasUninitializedReferenceMember = true;
981 // C++11 [class.union]p8, DR1460:
982 // a non-static data member of an anonymous union that is a member of
983 // X is also a variant member of X.
984 if (FieldRec->hasVariantMembers() &&
985 Field->isAnonymousStructOrUnion())
986 data().HasVariantMembers = true;
989 // Base element type of field is a non-class type.
990 if (!T->isLiteralType(Context) ||
991 (!Field->hasInClassInitializer() && !isUnion()))
992 data().DefaultedDefaultConstructorIsConstexpr = false;
994 // C++11 [class.copy]p23:
995 // A defaulted copy/move assignment operator for a class X is defined
996 // as deleted if X has:
997 // -- a non-static data member of const non-class type (or array
999 if (T.isConstQualified())
1000 data().DefaultedMoveAssignmentIsDeleted = true;
1004 // A standard-layout class is a class that:
1006 // -- either has no non-static data members in the most derived
1007 // class and at most one base class with non-static data members,
1008 // or has no base classes with non-static data members, and
1009 // At this point we know that we have a non-static data member, so the last
1011 if (!data().HasNoNonEmptyBases)
1012 data().IsStandardLayout = false;
1014 // C++14 [meta.unary.prop]p4:
1015 // T is a class type [...] with [...] no non-static data members other
1016 // than bit-fields of length 0...
1018 if (!Field->isBitField() ||
1019 (!Field->getBitWidth()->isTypeDependent() &&
1020 !Field->getBitWidth()->isValueDependent() &&
1021 Field->getBitWidthValue(Context) != 0))
1022 data().Empty = false;
1026 // Handle using declarations of conversion functions.
1027 if (UsingShadowDecl *Shadow = dyn_cast<UsingShadowDecl>(D)) {
1028 if (Shadow->getDeclName().getNameKind()
1029 == DeclarationName::CXXConversionFunctionName) {
1030 ASTContext &Ctx = getASTContext();
1031 data().Conversions.get(Ctx).addDecl(Ctx, Shadow, Shadow->getAccess());
1035 if (UsingDecl *Using = dyn_cast<UsingDecl>(D)) {
1036 if (Using->getDeclName().getNameKind() ==
1037 DeclarationName::CXXConstructorName) {
1038 data().HasInheritedConstructor = true;
1039 // C++1z [dcl.init.aggr]p1:
1040 // An aggregate is [...] a class [...] with no inherited constructors
1041 data().Aggregate = false;
1044 if (Using->getDeclName().getCXXOverloadedOperator() == OO_Equal)
1045 data().HasInheritedAssignment = true;
1049 void CXXRecordDecl::finishedDefaultedOrDeletedMember(CXXMethodDecl *D) {
1050 assert(!D->isImplicit() && !D->isUserProvided());
1052 // The kind of special member this declaration is, if any.
1053 unsigned SMKind = 0;
1055 if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) {
1056 if (Constructor->isDefaultConstructor()) {
1057 SMKind |= SMF_DefaultConstructor;
1058 if (Constructor->isConstexpr())
1059 data().HasConstexprDefaultConstructor = true;
1061 if (Constructor->isCopyConstructor())
1062 SMKind |= SMF_CopyConstructor;
1063 else if (Constructor->isMoveConstructor())
1064 SMKind |= SMF_MoveConstructor;
1065 else if (Constructor->isConstexpr())
1066 // We may now know that the constructor is constexpr.
1067 data().HasConstexprNonCopyMoveConstructor = true;
1068 } else if (isa<CXXDestructorDecl>(D)) {
1069 SMKind |= SMF_Destructor;
1070 if (!D->isTrivial() || D->getAccess() != AS_public || D->isDeleted())
1071 data().HasIrrelevantDestructor = false;
1072 } else if (D->isCopyAssignmentOperator())
1073 SMKind |= SMF_CopyAssignment;
1074 else if (D->isMoveAssignmentOperator())
1075 SMKind |= SMF_MoveAssignment;
1077 // Update which trivial / non-trivial special members we have.
1078 // addedMember will have skipped this step for this member.
1080 data().HasTrivialSpecialMembers |= SMKind;
1082 data().DeclaredNonTrivialSpecialMembers |= SMKind;
1085 bool CXXRecordDecl::isCLike() const {
1086 if (getTagKind() == TTK_Class || getTagKind() == TTK_Interface ||
1087 !TemplateOrInstantiation.isNull())
1089 if (!hasDefinition())
1092 return isPOD() && data().HasOnlyCMembers;
1095 bool CXXRecordDecl::isGenericLambda() const {
1096 if (!isLambda()) return false;
1097 return getLambdaData().IsGenericLambda;
1100 CXXMethodDecl* CXXRecordDecl::getLambdaCallOperator() const {
1101 if (!isLambda()) return nullptr;
1102 DeclarationName Name =
1103 getASTContext().DeclarationNames.getCXXOperatorName(OO_Call);
1104 DeclContext::lookup_result Calls = lookup(Name);
1106 assert(!Calls.empty() && "Missing lambda call operator!");
1107 assert(Calls.size() == 1 && "More than one lambda call operator!");
1109 NamedDecl *CallOp = Calls.front();
1110 if (FunctionTemplateDecl *CallOpTmpl =
1111 dyn_cast<FunctionTemplateDecl>(CallOp))
1112 return cast<CXXMethodDecl>(CallOpTmpl->getTemplatedDecl());
1114 return cast<CXXMethodDecl>(CallOp);
1117 CXXMethodDecl* CXXRecordDecl::getLambdaStaticInvoker() const {
1118 if (!isLambda()) return nullptr;
1119 DeclarationName Name =
1120 &getASTContext().Idents.get(getLambdaStaticInvokerName());
1121 DeclContext::lookup_result Invoker = lookup(Name);
1122 if (Invoker.empty()) return nullptr;
1123 assert(Invoker.size() == 1 && "More than one static invoker operator!");
1124 NamedDecl *InvokerFun = Invoker.front();
1125 if (FunctionTemplateDecl *InvokerTemplate =
1126 dyn_cast<FunctionTemplateDecl>(InvokerFun))
1127 return cast<CXXMethodDecl>(InvokerTemplate->getTemplatedDecl());
1129 return cast<CXXMethodDecl>(InvokerFun);
1132 void CXXRecordDecl::getCaptureFields(
1133 llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures,
1134 FieldDecl *&ThisCapture) const {
1136 ThisCapture = nullptr;
1138 LambdaDefinitionData &Lambda = getLambdaData();
1139 RecordDecl::field_iterator Field = field_begin();
1140 for (const LambdaCapture *C = Lambda.Captures, *CEnd = C + Lambda.NumCaptures;
1141 C != CEnd; ++C, ++Field) {
1142 if (C->capturesThis())
1143 ThisCapture = *Field;
1144 else if (C->capturesVariable())
1145 Captures[C->getCapturedVar()] = *Field;
1147 assert(Field == field_end());
1150 TemplateParameterList *
1151 CXXRecordDecl::getGenericLambdaTemplateParameterList() const {
1152 if (!isLambda()) return nullptr;
1153 CXXMethodDecl *CallOp = getLambdaCallOperator();
1154 if (FunctionTemplateDecl *Tmpl = CallOp->getDescribedFunctionTemplate())
1155 return Tmpl->getTemplateParameters();
1159 Decl *CXXRecordDecl::getLambdaContextDecl() const {
1160 assert(isLambda() && "Not a lambda closure type!");
1161 ExternalASTSource *Source = getParentASTContext().getExternalSource();
1162 return getLambdaData().ContextDecl.get(Source);
1165 static CanQualType GetConversionType(ASTContext &Context, NamedDecl *Conv) {
1167 cast<CXXConversionDecl>(Conv->getUnderlyingDecl()->getAsFunction())
1168 ->getConversionType();
1169 return Context.getCanonicalType(T);
1172 /// Collect the visible conversions of a base class.
1174 /// \param Record a base class of the class we're considering
1175 /// \param InVirtual whether this base class is a virtual base (or a base
1176 /// of a virtual base)
1177 /// \param Access the access along the inheritance path to this base
1178 /// \param ParentHiddenTypes the conversions provided by the inheritors
1180 /// \param Output the set to which to add conversions from non-virtual bases
1181 /// \param VOutput the set to which to add conversions from virtual bases
1182 /// \param HiddenVBaseCs the set of conversions which were hidden in a
1183 /// virtual base along some inheritance path
1184 static void CollectVisibleConversions(ASTContext &Context,
1185 CXXRecordDecl *Record,
1187 AccessSpecifier Access,
1188 const llvm::SmallPtrSet<CanQualType, 8> &ParentHiddenTypes,
1189 ASTUnresolvedSet &Output,
1190 UnresolvedSetImpl &VOutput,
1191 llvm::SmallPtrSet<NamedDecl*, 8> &HiddenVBaseCs) {
1192 // The set of types which have conversions in this class or its
1193 // subclasses. As an optimization, we don't copy the derived set
1194 // unless it might change.
1195 const llvm::SmallPtrSet<CanQualType, 8> *HiddenTypes = &ParentHiddenTypes;
1196 llvm::SmallPtrSet<CanQualType, 8> HiddenTypesBuffer;
1198 // Collect the direct conversions and figure out which conversions
1199 // will be hidden in the subclasses.
1200 CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin();
1201 CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end();
1202 if (ConvI != ConvE) {
1203 HiddenTypesBuffer = ParentHiddenTypes;
1204 HiddenTypes = &HiddenTypesBuffer;
1206 for (CXXRecordDecl::conversion_iterator I = ConvI; I != ConvE; ++I) {
1207 CanQualType ConvType(GetConversionType(Context, I.getDecl()));
1208 bool Hidden = ParentHiddenTypes.count(ConvType);
1210 HiddenTypesBuffer.insert(ConvType);
1212 // If this conversion is hidden and we're in a virtual base,
1213 // remember that it's hidden along some inheritance path.
1214 if (Hidden && InVirtual)
1215 HiddenVBaseCs.insert(cast<NamedDecl>(I.getDecl()->getCanonicalDecl()));
1217 // If this conversion isn't hidden, add it to the appropriate output.
1219 AccessSpecifier IAccess
1220 = CXXRecordDecl::MergeAccess(Access, I.getAccess());
1223 VOutput.addDecl(I.getDecl(), IAccess);
1225 Output.addDecl(Context, I.getDecl(), IAccess);
1230 // Collect information recursively from any base classes.
1231 for (const auto &I : Record->bases()) {
1232 const RecordType *RT = I.getType()->getAs<RecordType>();
1235 AccessSpecifier BaseAccess
1236 = CXXRecordDecl::MergeAccess(Access, I.getAccessSpecifier());
1237 bool BaseInVirtual = InVirtual || I.isVirtual();
1239 CXXRecordDecl *Base = cast<CXXRecordDecl>(RT->getDecl());
1240 CollectVisibleConversions(Context, Base, BaseInVirtual, BaseAccess,
1241 *HiddenTypes, Output, VOutput, HiddenVBaseCs);
1245 /// Collect the visible conversions of a class.
1247 /// This would be extremely straightforward if it weren't for virtual
1248 /// bases. It might be worth special-casing that, really.
1249 static void CollectVisibleConversions(ASTContext &Context,
1250 CXXRecordDecl *Record,
1251 ASTUnresolvedSet &Output) {
1252 // The collection of all conversions in virtual bases that we've
1253 // found. These will be added to the output as long as they don't
1254 // appear in the hidden-conversions set.
1255 UnresolvedSet<8> VBaseCs;
1257 // The set of conversions in virtual bases that we've determined to
1259 llvm::SmallPtrSet<NamedDecl*, 8> HiddenVBaseCs;
1261 // The set of types hidden by classes derived from this one.
1262 llvm::SmallPtrSet<CanQualType, 8> HiddenTypes;
1264 // Go ahead and collect the direct conversions and add them to the
1265 // hidden-types set.
1266 CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin();
1267 CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end();
1268 Output.append(Context, ConvI, ConvE);
1269 for (; ConvI != ConvE; ++ConvI)
1270 HiddenTypes.insert(GetConversionType(Context, ConvI.getDecl()));
1272 // Recursively collect conversions from base classes.
1273 for (const auto &I : Record->bases()) {
1274 const RecordType *RT = I.getType()->getAs<RecordType>();
1277 CollectVisibleConversions(Context, cast<CXXRecordDecl>(RT->getDecl()),
1278 I.isVirtual(), I.getAccessSpecifier(),
1279 HiddenTypes, Output, VBaseCs, HiddenVBaseCs);
1282 // Add any unhidden conversions provided by virtual bases.
1283 for (UnresolvedSetIterator I = VBaseCs.begin(), E = VBaseCs.end();
1285 if (!HiddenVBaseCs.count(cast<NamedDecl>(I.getDecl()->getCanonicalDecl())))
1286 Output.addDecl(Context, I.getDecl(), I.getAccess());
1290 /// getVisibleConversionFunctions - get all conversion functions visible
1291 /// in current class; including conversion function templates.
1292 llvm::iterator_range<CXXRecordDecl::conversion_iterator>
1293 CXXRecordDecl::getVisibleConversionFunctions() {
1294 ASTContext &Ctx = getASTContext();
1296 ASTUnresolvedSet *Set;
1297 if (bases_begin() == bases_end()) {
1298 // If root class, all conversions are visible.
1299 Set = &data().Conversions.get(Ctx);
1301 Set = &data().VisibleConversions.get(Ctx);
1302 // If visible conversion list is not evaluated, evaluate it.
1303 if (!data().ComputedVisibleConversions) {
1304 CollectVisibleConversions(Ctx, this, *Set);
1305 data().ComputedVisibleConversions = true;
1308 return llvm::make_range(Set->begin(), Set->end());
1311 void CXXRecordDecl::removeConversion(const NamedDecl *ConvDecl) {
1312 // This operation is O(N) but extremely rare. Sema only uses it to
1313 // remove UsingShadowDecls in a class that were followed by a direct
1314 // declaration, e.g.:
1316 // using B::operator int;
1319 // This is uncommon by itself and even more uncommon in conjunction
1320 // with sufficiently large numbers of directly-declared conversions
1321 // that asymptotic behavior matters.
1323 ASTUnresolvedSet &Convs = data().Conversions.get(getASTContext());
1324 for (unsigned I = 0, E = Convs.size(); I != E; ++I) {
1325 if (Convs[I].getDecl() == ConvDecl) {
1327 assert(std::find(Convs.begin(), Convs.end(), ConvDecl) == Convs.end()
1328 && "conversion was found multiple times in unresolved set");
1333 llvm_unreachable("conversion not found in set!");
1336 CXXRecordDecl *CXXRecordDecl::getInstantiatedFromMemberClass() const {
1337 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
1338 return cast<CXXRecordDecl>(MSInfo->getInstantiatedFrom());
1343 MemberSpecializationInfo *CXXRecordDecl::getMemberSpecializationInfo() const {
1344 return TemplateOrInstantiation.dyn_cast<MemberSpecializationInfo *>();
1348 CXXRecordDecl::setInstantiationOfMemberClass(CXXRecordDecl *RD,
1349 TemplateSpecializationKind TSK) {
1350 assert(TemplateOrInstantiation.isNull() &&
1351 "Previous template or instantiation?");
1352 assert(!isa<ClassTemplatePartialSpecializationDecl>(this));
1353 TemplateOrInstantiation
1354 = new (getASTContext()) MemberSpecializationInfo(RD, TSK);
1357 ClassTemplateDecl *CXXRecordDecl::getDescribedClassTemplate() const {
1358 return TemplateOrInstantiation.dyn_cast<ClassTemplateDecl *>();
1361 void CXXRecordDecl::setDescribedClassTemplate(ClassTemplateDecl *Template) {
1362 TemplateOrInstantiation = Template;
1365 TemplateSpecializationKind CXXRecordDecl::getTemplateSpecializationKind() const{
1366 if (const ClassTemplateSpecializationDecl *Spec
1367 = dyn_cast<ClassTemplateSpecializationDecl>(this))
1368 return Spec->getSpecializationKind();
1370 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
1371 return MSInfo->getTemplateSpecializationKind();
1373 return TSK_Undeclared;
1377 CXXRecordDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK) {
1378 if (ClassTemplateSpecializationDecl *Spec
1379 = dyn_cast<ClassTemplateSpecializationDecl>(this)) {
1380 Spec->setSpecializationKind(TSK);
1384 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) {
1385 MSInfo->setTemplateSpecializationKind(TSK);
1389 llvm_unreachable("Not a class template or member class specialization");
1392 const CXXRecordDecl *CXXRecordDecl::getTemplateInstantiationPattern() const {
1393 auto GetDefinitionOrSelf =
1394 [](const CXXRecordDecl *D) -> const CXXRecordDecl * {
1395 if (auto *Def = D->getDefinition())
1400 // If it's a class template specialization, find the template or partial
1401 // specialization from which it was instantiated.
1402 if (auto *TD = dyn_cast<ClassTemplateSpecializationDecl>(this)) {
1403 auto From = TD->getInstantiatedFrom();
1404 if (auto *CTD = From.dyn_cast<ClassTemplateDecl *>()) {
1405 while (auto *NewCTD = CTD->getInstantiatedFromMemberTemplate()) {
1406 if (NewCTD->isMemberSpecialization())
1410 return GetDefinitionOrSelf(CTD->getTemplatedDecl());
1413 From.dyn_cast<ClassTemplatePartialSpecializationDecl *>()) {
1414 while (auto *NewCTPSD = CTPSD->getInstantiatedFromMember()) {
1415 if (NewCTPSD->isMemberSpecialization())
1419 return GetDefinitionOrSelf(CTPSD);
1423 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) {
1424 if (isTemplateInstantiation(MSInfo->getTemplateSpecializationKind())) {
1425 const CXXRecordDecl *RD = this;
1426 while (auto *NewRD = RD->getInstantiatedFromMemberClass())
1428 return GetDefinitionOrSelf(RD);
1432 assert(!isTemplateInstantiation(this->getTemplateSpecializationKind()) &&
1433 "couldn't find pattern for class template instantiation");
1437 CXXDestructorDecl *CXXRecordDecl::getDestructor() const {
1438 ASTContext &Context = getASTContext();
1439 QualType ClassType = Context.getTypeDeclType(this);
1441 DeclarationName Name
1442 = Context.DeclarationNames.getCXXDestructorName(
1443 Context.getCanonicalType(ClassType));
1445 DeclContext::lookup_result R = lookup(Name);
1447 return R.empty() ? nullptr : dyn_cast<CXXDestructorDecl>(R.front());
1450 bool CXXRecordDecl::isAnyDestructorNoReturn() const {
1451 // Destructor is noreturn.
1452 if (const CXXDestructorDecl *Destructor = getDestructor())
1453 if (Destructor->isNoReturn())
1456 // Check base classes destructor for noreturn.
1457 for (const auto &Base : bases())
1458 if (const CXXRecordDecl *RD = Base.getType()->getAsCXXRecordDecl())
1459 if (RD->isAnyDestructorNoReturn())
1462 // Check fields for noreturn.
1463 for (const auto *Field : fields())
1464 if (const CXXRecordDecl *RD =
1465 Field->getType()->getBaseElementTypeUnsafe()->getAsCXXRecordDecl())
1466 if (RD->isAnyDestructorNoReturn())
1469 // All destructors are not noreturn.
1473 void CXXRecordDecl::completeDefinition() {
1474 completeDefinition(nullptr);
1477 void CXXRecordDecl::completeDefinition(CXXFinalOverriderMap *FinalOverriders) {
1478 RecordDecl::completeDefinition();
1480 // If the class may be abstract (but hasn't been marked as such), check for
1481 // any pure final overriders.
1482 if (mayBeAbstract()) {
1483 CXXFinalOverriderMap MyFinalOverriders;
1484 if (!FinalOverriders) {
1485 getFinalOverriders(MyFinalOverriders);
1486 FinalOverriders = &MyFinalOverriders;
1490 for (CXXFinalOverriderMap::iterator M = FinalOverriders->begin(),
1491 MEnd = FinalOverriders->end();
1492 M != MEnd && !Done; ++M) {
1493 for (OverridingMethods::iterator SO = M->second.begin(),
1494 SOEnd = M->second.end();
1495 SO != SOEnd && !Done; ++SO) {
1496 assert(SO->second.size() > 0 &&
1497 "All virtual functions have overridding virtual functions");
1499 // C++ [class.abstract]p4:
1500 // A class is abstract if it contains or inherits at least one
1501 // pure virtual function for which the final overrider is pure
1503 if (SO->second.front().Method->isPure()) {
1504 data().Abstract = true;
1512 // Set access bits correctly on the directly-declared conversions.
1513 for (conversion_iterator I = conversion_begin(), E = conversion_end();
1515 I.setAccess((*I)->getAccess());
1518 bool CXXRecordDecl::mayBeAbstract() const {
1519 if (data().Abstract || isInvalidDecl() || !data().Polymorphic ||
1520 isDependentContext())
1523 for (const auto &B : bases()) {
1524 CXXRecordDecl *BaseDecl
1525 = cast<CXXRecordDecl>(B.getType()->getAs<RecordType>()->getDecl());
1526 if (BaseDecl->isAbstract())
1533 void CXXDeductionGuideDecl::anchor() { }
1535 CXXDeductionGuideDecl *CXXDeductionGuideDecl::Create(
1536 ASTContext &C, DeclContext *DC, SourceLocation StartLoc, bool IsExplicit,
1537 const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo,
1538 SourceLocation EndLocation) {
1539 return new (C, DC) CXXDeductionGuideDecl(C, DC, StartLoc, IsExplicit,
1540 NameInfo, T, TInfo, EndLocation);
1543 CXXDeductionGuideDecl *CXXDeductionGuideDecl::CreateDeserialized(ASTContext &C,
1545 return new (C, ID) CXXDeductionGuideDecl(C, nullptr, SourceLocation(), false,
1546 DeclarationNameInfo(), QualType(),
1547 nullptr, SourceLocation());
1550 void CXXMethodDecl::anchor() { }
1552 bool CXXMethodDecl::isStatic() const {
1553 const CXXMethodDecl *MD = getCanonicalDecl();
1555 if (MD->getStorageClass() == SC_Static)
1558 OverloadedOperatorKind OOK = getDeclName().getCXXOverloadedOperator();
1559 return isStaticOverloadedOperator(OOK);
1562 static bool recursivelyOverrides(const CXXMethodDecl *DerivedMD,
1563 const CXXMethodDecl *BaseMD) {
1564 for (CXXMethodDecl::method_iterator I = DerivedMD->begin_overridden_methods(),
1565 E = DerivedMD->end_overridden_methods(); I != E; ++I) {
1566 const CXXMethodDecl *MD = *I;
1567 if (MD->getCanonicalDecl() == BaseMD->getCanonicalDecl())
1569 if (recursivelyOverrides(MD, BaseMD))
1576 CXXMethodDecl::getCorrespondingMethodInClass(const CXXRecordDecl *RD,
1578 if (this->getParent()->getCanonicalDecl() == RD->getCanonicalDecl())
1581 // Lookup doesn't work for destructors, so handle them separately.
1582 if (isa<CXXDestructorDecl>(this)) {
1583 CXXMethodDecl *MD = RD->getDestructor();
1585 if (recursivelyOverrides(MD, this))
1587 if (MayBeBase && recursivelyOverrides(this, MD))
1593 for (auto *ND : RD->lookup(getDeclName())) {
1594 CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(ND);
1597 if (recursivelyOverrides(MD, this))
1599 if (MayBeBase && recursivelyOverrides(this, MD))
1603 for (const auto &I : RD->bases()) {
1604 const RecordType *RT = I.getType()->getAs<RecordType>();
1607 const CXXRecordDecl *Base = cast<CXXRecordDecl>(RT->getDecl());
1608 CXXMethodDecl *T = this->getCorrespondingMethodInClass(Base);
1617 CXXMethodDecl::Create(ASTContext &C, CXXRecordDecl *RD,
1618 SourceLocation StartLoc,
1619 const DeclarationNameInfo &NameInfo,
1620 QualType T, TypeSourceInfo *TInfo,
1621 StorageClass SC, bool isInline,
1622 bool isConstexpr, SourceLocation EndLocation) {
1623 return new (C, RD) CXXMethodDecl(CXXMethod, C, RD, StartLoc, NameInfo,
1624 T, TInfo, SC, isInline, isConstexpr,
1628 CXXMethodDecl *CXXMethodDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
1629 return new (C, ID) CXXMethodDecl(CXXMethod, C, nullptr, SourceLocation(),
1630 DeclarationNameInfo(), QualType(), nullptr,
1631 SC_None, false, false, SourceLocation());
1634 CXXMethodDecl *CXXMethodDecl::getDevirtualizedMethod(const Expr *Base,
1636 assert(isVirtual() && "this method is expected to be virtual");
1638 // When building with -fapple-kext, all calls must go through the vtable since
1639 // the kernel linker can do runtime patching of vtables.
1643 // If the member function is marked 'final', we know that it can't be
1644 // overridden and can therefore devirtualize it unless it's pure virtual.
1645 if (hasAttr<FinalAttr>())
1646 return isPure() ? nullptr : this;
1648 // If Base is unknown, we cannot devirtualize.
1652 // If the base expression (after skipping derived-to-base conversions) is a
1653 // class prvalue, then we can devirtualize.
1654 Base = Base->getBestDynamicClassTypeExpr();
1655 if (Base->isRValue() && Base->getType()->isRecordType())
1658 // If we don't even know what we would call, we can't devirtualize.
1659 const CXXRecordDecl *BestDynamicDecl = Base->getBestDynamicClassType();
1660 if (!BestDynamicDecl)
1663 // There may be a method corresponding to MD in a derived class.
1664 CXXMethodDecl *DevirtualizedMethod =
1665 getCorrespondingMethodInClass(BestDynamicDecl);
1667 // If that method is pure virtual, we can't devirtualize. If this code is
1668 // reached, the result would be UB, not a direct call to the derived class
1669 // function, and we can't assume the derived class function is defined.
1670 if (DevirtualizedMethod->isPure())
1673 // If that method is marked final, we can devirtualize it.
1674 if (DevirtualizedMethod->hasAttr<FinalAttr>())
1675 return DevirtualizedMethod;
1677 // Similarly, if the class itself is marked 'final' it can't be overridden
1678 // and we can therefore devirtualize the member function call.
1679 if (BestDynamicDecl->hasAttr<FinalAttr>())
1680 return DevirtualizedMethod;
1682 if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Base)) {
1683 if (const VarDecl *VD = dyn_cast<VarDecl>(DRE->getDecl()))
1684 if (VD->getType()->isRecordType())
1685 // This is a record decl. We know the type and can devirtualize it.
1686 return DevirtualizedMethod;
1691 // We can devirtualize calls on an object accessed by a class member access
1692 // expression, since by C++11 [basic.life]p6 we know that it can't refer to
1693 // a derived class object constructed in the same location.
1694 if (const MemberExpr *ME = dyn_cast<MemberExpr>(Base))
1695 if (const ValueDecl *VD = dyn_cast<ValueDecl>(ME->getMemberDecl()))
1696 return VD->getType()->isRecordType() ? DevirtualizedMethod : nullptr;
1698 // Likewise for calls on an object accessed by a (non-reference) pointer to
1700 if (auto *BO = dyn_cast<BinaryOperator>(Base)) {
1701 if (BO->isPtrMemOp()) {
1702 auto *MPT = BO->getRHS()->getType()->castAs<MemberPointerType>();
1703 if (MPT->getPointeeType()->isRecordType())
1704 return DevirtualizedMethod;
1708 // We can't devirtualize the call.
1712 bool CXXMethodDecl::isUsualDeallocationFunction() const {
1713 if (getOverloadedOperator() != OO_Delete &&
1714 getOverloadedOperator() != OO_Array_Delete)
1717 // C++ [basic.stc.dynamic.deallocation]p2:
1718 // A template instance is never a usual deallocation function,
1719 // regardless of its signature.
1720 if (getPrimaryTemplate())
1723 // C++ [basic.stc.dynamic.deallocation]p2:
1724 // If a class T has a member deallocation function named operator delete
1725 // with exactly one parameter, then that function is a usual (non-placement)
1726 // deallocation function. [...]
1727 if (getNumParams() == 1)
1729 unsigned UsualParams = 1;
1731 // C++ <=14 [basic.stc.dynamic.deallocation]p2:
1732 // [...] If class T does not declare such an operator delete but does
1733 // declare a member deallocation function named operator delete with
1734 // exactly two parameters, the second of which has type std::size_t (18.1),
1735 // then this function is a usual deallocation function.
1737 // C++17 says a usual deallocation function is one with the signature
1738 // (void* [, size_t] [, std::align_val_t] [, ...])
1739 // and all such functions are usual deallocation functions. It's not clear
1740 // that allowing varargs functions was intentional.
1741 ASTContext &Context = getASTContext();
1742 if (UsualParams < getNumParams() &&
1743 Context.hasSameUnqualifiedType(getParamDecl(UsualParams)->getType(),
1744 Context.getSizeType()))
1747 if (UsualParams < getNumParams() &&
1748 getParamDecl(UsualParams)->getType()->isAlignValT())
1751 if (UsualParams != getNumParams())
1754 // In C++17 onwards, all potential usual deallocation functions are actual
1755 // usual deallocation functions.
1756 if (Context.getLangOpts().AlignedAllocation)
1759 // This function is a usual deallocation function if there are no
1760 // single-parameter deallocation functions of the same kind.
1761 DeclContext::lookup_result R = getDeclContext()->lookup(getDeclName());
1762 for (DeclContext::lookup_result::iterator I = R.begin(), E = R.end();
1764 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*I))
1765 if (FD->getNumParams() == 1)
1772 bool CXXMethodDecl::isCopyAssignmentOperator() const {
1773 // C++0x [class.copy]p17:
1774 // A user-declared copy assignment operator X::operator= is a non-static
1775 // non-template member function of class X with exactly one parameter of
1776 // type X, X&, const X&, volatile X& or const volatile X&.
1777 if (/*operator=*/getOverloadedOperator() != OO_Equal ||
1778 /*non-static*/ isStatic() ||
1779 /*non-template*/getPrimaryTemplate() || getDescribedFunctionTemplate() ||
1780 getNumParams() != 1)
1783 QualType ParamType = getParamDecl(0)->getType();
1784 if (const LValueReferenceType *Ref = ParamType->getAs<LValueReferenceType>())
1785 ParamType = Ref->getPointeeType();
1787 ASTContext &Context = getASTContext();
1789 = Context.getCanonicalType(Context.getTypeDeclType(getParent()));
1790 return Context.hasSameUnqualifiedType(ClassType, ParamType);
1793 bool CXXMethodDecl::isMoveAssignmentOperator() const {
1794 // C++0x [class.copy]p19:
1795 // A user-declared move assignment operator X::operator= is a non-static
1796 // non-template member function of class X with exactly one parameter of type
1797 // X&&, const X&&, volatile X&&, or const volatile X&&.
1798 if (getOverloadedOperator() != OO_Equal || isStatic() ||
1799 getPrimaryTemplate() || getDescribedFunctionTemplate() ||
1800 getNumParams() != 1)
1803 QualType ParamType = getParamDecl(0)->getType();
1804 if (!isa<RValueReferenceType>(ParamType))
1806 ParamType = ParamType->getPointeeType();
1808 ASTContext &Context = getASTContext();
1810 = Context.getCanonicalType(Context.getTypeDeclType(getParent()));
1811 return Context.hasSameUnqualifiedType(ClassType, ParamType);
1814 void CXXMethodDecl::addOverriddenMethod(const CXXMethodDecl *MD) {
1815 assert(MD->isCanonicalDecl() && "Method is not canonical!");
1816 assert(!MD->getParent()->isDependentContext() &&
1817 "Can't add an overridden method to a class template!");
1818 assert(MD->isVirtual() && "Method is not virtual!");
1820 getASTContext().addOverriddenMethod(this, MD);
1823 CXXMethodDecl::method_iterator CXXMethodDecl::begin_overridden_methods() const {
1824 if (isa<CXXConstructorDecl>(this)) return nullptr;
1825 return getASTContext().overridden_methods_begin(this);
1828 CXXMethodDecl::method_iterator CXXMethodDecl::end_overridden_methods() const {
1829 if (isa<CXXConstructorDecl>(this)) return nullptr;
1830 return getASTContext().overridden_methods_end(this);
1833 unsigned CXXMethodDecl::size_overridden_methods() const {
1834 if (isa<CXXConstructorDecl>(this)) return 0;
1835 return getASTContext().overridden_methods_size(this);
1838 CXXMethodDecl::overridden_method_range
1839 CXXMethodDecl::overridden_methods() const {
1840 if (isa<CXXConstructorDecl>(this))
1841 return overridden_method_range(nullptr, nullptr);
1842 return getASTContext().overridden_methods(this);
1845 QualType CXXMethodDecl::getThisType(ASTContext &C) const {
1846 // C++ 9.3.2p1: The type of this in a member function of a class X is X*.
1847 // If the member function is declared const, the type of this is const X*,
1848 // if the member function is declared volatile, the type of this is
1849 // volatile X*, and if the member function is declared const volatile,
1850 // the type of this is const volatile X*.
1852 assert(isInstance() && "No 'this' for static methods!");
1854 QualType ClassTy = C.getTypeDeclType(getParent());
1855 ClassTy = C.getQualifiedType(ClassTy,
1856 Qualifiers::fromCVRUMask(getTypeQualifiers()));
1857 return C.getPointerType(ClassTy);
1860 bool CXXMethodDecl::hasInlineBody() const {
1861 // If this function is a template instantiation, look at the template from
1862 // which it was instantiated.
1863 const FunctionDecl *CheckFn = getTemplateInstantiationPattern();
1867 const FunctionDecl *fn;
1868 return CheckFn->isDefined(fn) && !fn->isOutOfLine() &&
1869 (fn->doesThisDeclarationHaveABody() || fn->willHaveBody());
1872 bool CXXMethodDecl::isLambdaStaticInvoker() const {
1873 const CXXRecordDecl *P = getParent();
1874 if (P->isLambda()) {
1875 if (const CXXMethodDecl *StaticInvoker = P->getLambdaStaticInvoker()) {
1876 if (StaticInvoker == this) return true;
1877 if (P->isGenericLambda() && this->isFunctionTemplateSpecialization())
1878 return StaticInvoker == this->getPrimaryTemplate()->getTemplatedDecl();
1884 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
1885 TypeSourceInfo *TInfo, bool IsVirtual,
1886 SourceLocation L, Expr *Init,
1888 SourceLocation EllipsisLoc)
1889 : Initializee(TInfo), MemberOrEllipsisLocation(EllipsisLoc), Init(Init),
1890 LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(IsVirtual),
1891 IsWritten(false), SourceOrder(0)
1895 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
1897 SourceLocation MemberLoc,
1898 SourceLocation L, Expr *Init,
1900 : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init),
1901 LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false),
1902 IsWritten(false), SourceOrder(0)
1906 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
1907 IndirectFieldDecl *Member,
1908 SourceLocation MemberLoc,
1909 SourceLocation L, Expr *Init,
1911 : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init),
1912 LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false),
1913 IsWritten(false), SourceOrder(0)
1917 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
1918 TypeSourceInfo *TInfo,
1919 SourceLocation L, Expr *Init,
1921 : Initializee(TInfo), MemberOrEllipsisLocation(), Init(Init),
1922 LParenLoc(L), RParenLoc(R), IsDelegating(true), IsVirtual(false),
1923 IsWritten(false), SourceOrder(0)
1927 TypeLoc CXXCtorInitializer::getBaseClassLoc() const {
1928 if (isBaseInitializer())
1929 return Initializee.get<TypeSourceInfo*>()->getTypeLoc();
1934 const Type *CXXCtorInitializer::getBaseClass() const {
1935 if (isBaseInitializer())
1936 return Initializee.get<TypeSourceInfo*>()->getType().getTypePtr();
1941 SourceLocation CXXCtorInitializer::getSourceLocation() const {
1942 if (isInClassMemberInitializer())
1943 return getAnyMember()->getLocation();
1945 if (isAnyMemberInitializer())
1946 return getMemberLocation();
1948 if (TypeSourceInfo *TSInfo = Initializee.get<TypeSourceInfo*>())
1949 return TSInfo->getTypeLoc().getLocalSourceRange().getBegin();
1951 return SourceLocation();
1954 SourceRange CXXCtorInitializer::getSourceRange() const {
1955 if (isInClassMemberInitializer()) {
1956 FieldDecl *D = getAnyMember();
1957 if (Expr *I = D->getInClassInitializer())
1958 return I->getSourceRange();
1959 return SourceRange();
1962 return SourceRange(getSourceLocation(), getRParenLoc());
1965 void CXXConstructorDecl::anchor() { }
1967 CXXConstructorDecl *CXXConstructorDecl::CreateDeserialized(ASTContext &C,
1970 unsigned Extra = additionalSizeToAlloc<InheritedConstructor>(Inherited);
1971 auto *Result = new (C, ID, Extra) CXXConstructorDecl(
1972 C, nullptr, SourceLocation(), DeclarationNameInfo(), QualType(), nullptr,
1973 false, false, false, false, InheritedConstructor());
1974 Result->IsInheritingConstructor = Inherited;
1978 CXXConstructorDecl *
1979 CXXConstructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
1980 SourceLocation StartLoc,
1981 const DeclarationNameInfo &NameInfo,
1982 QualType T, TypeSourceInfo *TInfo,
1983 bool isExplicit, bool isInline,
1984 bool isImplicitlyDeclared, bool isConstexpr,
1985 InheritedConstructor Inherited) {
1986 assert(NameInfo.getName().getNameKind()
1987 == DeclarationName::CXXConstructorName &&
1988 "Name must refer to a constructor");
1990 additionalSizeToAlloc<InheritedConstructor>(Inherited ? 1 : 0);
1991 return new (C, RD, Extra) CXXConstructorDecl(
1992 C, RD, StartLoc, NameInfo, T, TInfo, isExplicit, isInline,
1993 isImplicitlyDeclared, isConstexpr, Inherited);
1996 CXXConstructorDecl::init_const_iterator CXXConstructorDecl::init_begin() const {
1997 return CtorInitializers.get(getASTContext().getExternalSource());
2000 CXXConstructorDecl *CXXConstructorDecl::getTargetConstructor() const {
2001 assert(isDelegatingConstructor() && "Not a delegating constructor!");
2002 Expr *E = (*init_begin())->getInit()->IgnoreImplicit();
2003 if (CXXConstructExpr *Construct = dyn_cast<CXXConstructExpr>(E))
2004 return Construct->getConstructor();
2009 bool CXXConstructorDecl::isDefaultConstructor() const {
2010 // C++ [class.ctor]p5:
2011 // A default constructor for a class X is a constructor of class
2012 // X that can be called without an argument.
2013 return (getNumParams() == 0) ||
2014 (getNumParams() > 0 && getParamDecl(0)->hasDefaultArg());
2018 CXXConstructorDecl::isCopyConstructor(unsigned &TypeQuals) const {
2019 return isCopyOrMoveConstructor(TypeQuals) &&
2020 getParamDecl(0)->getType()->isLValueReferenceType();
2023 bool CXXConstructorDecl::isMoveConstructor(unsigned &TypeQuals) const {
2024 return isCopyOrMoveConstructor(TypeQuals) &&
2025 getParamDecl(0)->getType()->isRValueReferenceType();
2028 /// \brief Determine whether this is a copy or move constructor.
2029 bool CXXConstructorDecl::isCopyOrMoveConstructor(unsigned &TypeQuals) const {
2030 // C++ [class.copy]p2:
2031 // A non-template constructor for class X is a copy constructor
2032 // if its first parameter is of type X&, const X&, volatile X& or
2033 // const volatile X&, and either there are no other parameters
2034 // or else all other parameters have default arguments (8.3.6).
2035 // C++0x [class.copy]p3:
2036 // A non-template constructor for class X is a move constructor if its
2037 // first parameter is of type X&&, const X&&, volatile X&&, or
2038 // const volatile X&&, and either there are no other parameters or else
2039 // all other parameters have default arguments.
2040 if ((getNumParams() < 1) ||
2041 (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
2042 (getPrimaryTemplate() != nullptr) ||
2043 (getDescribedFunctionTemplate() != nullptr))
2046 const ParmVarDecl *Param = getParamDecl(0);
2048 // Do we have a reference type?
2049 const ReferenceType *ParamRefType = Param->getType()->getAs<ReferenceType>();
2053 // Is it a reference to our class type?
2054 ASTContext &Context = getASTContext();
2056 CanQualType PointeeType
2057 = Context.getCanonicalType(ParamRefType->getPointeeType());
2059 = Context.getCanonicalType(Context.getTagDeclType(getParent()));
2060 if (PointeeType.getUnqualifiedType() != ClassTy)
2063 // FIXME: other qualifiers?
2065 // We have a copy or move constructor.
2066 TypeQuals = PointeeType.getCVRQualifiers();
2070 bool CXXConstructorDecl::isConvertingConstructor(bool AllowExplicit) const {
2071 // C++ [class.conv.ctor]p1:
2072 // A constructor declared without the function-specifier explicit
2073 // that can be called with a single parameter specifies a
2074 // conversion from the type of its first parameter to the type of
2075 // its class. Such a constructor is called a converting
2077 if (isExplicit() && !AllowExplicit)
2080 return (getNumParams() == 0 &&
2081 getType()->getAs<FunctionProtoType>()->isVariadic()) ||
2082 (getNumParams() == 1) ||
2083 (getNumParams() > 1 &&
2084 (getParamDecl(1)->hasDefaultArg() ||
2085 getParamDecl(1)->isParameterPack()));
2088 bool CXXConstructorDecl::isSpecializationCopyingObject() const {
2089 if ((getNumParams() < 1) ||
2090 (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
2091 (getDescribedFunctionTemplate() != nullptr))
2094 const ParmVarDecl *Param = getParamDecl(0);
2096 ASTContext &Context = getASTContext();
2097 CanQualType ParamType = Context.getCanonicalType(Param->getType());
2099 // Is it the same as our our class type?
2101 = Context.getCanonicalType(Context.getTagDeclType(getParent()));
2102 if (ParamType.getUnqualifiedType() != ClassTy)
2108 void CXXDestructorDecl::anchor() { }
2111 CXXDestructorDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2113 CXXDestructorDecl(C, nullptr, SourceLocation(), DeclarationNameInfo(),
2114 QualType(), nullptr, false, false);
2118 CXXDestructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
2119 SourceLocation StartLoc,
2120 const DeclarationNameInfo &NameInfo,
2121 QualType T, TypeSourceInfo *TInfo,
2122 bool isInline, bool isImplicitlyDeclared) {
2123 assert(NameInfo.getName().getNameKind()
2124 == DeclarationName::CXXDestructorName &&
2125 "Name must refer to a destructor");
2126 return new (C, RD) CXXDestructorDecl(C, RD, StartLoc, NameInfo, T, TInfo,
2127 isInline, isImplicitlyDeclared);
2130 void CXXDestructorDecl::setOperatorDelete(FunctionDecl *OD) {
2131 auto *First = cast<CXXDestructorDecl>(getFirstDecl());
2132 if (OD && !First->OperatorDelete) {
2133 First->OperatorDelete = OD;
2134 if (auto *L = getASTMutationListener())
2135 L->ResolvedOperatorDelete(First, OD);
2139 void CXXConversionDecl::anchor() { }
2142 CXXConversionDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2143 return new (C, ID) CXXConversionDecl(C, nullptr, SourceLocation(),
2144 DeclarationNameInfo(), QualType(),
2145 nullptr, false, false, false,
2150 CXXConversionDecl::Create(ASTContext &C, CXXRecordDecl *RD,
2151 SourceLocation StartLoc,
2152 const DeclarationNameInfo &NameInfo,
2153 QualType T, TypeSourceInfo *TInfo,
2154 bool isInline, bool isExplicit,
2155 bool isConstexpr, SourceLocation EndLocation) {
2156 assert(NameInfo.getName().getNameKind()
2157 == DeclarationName::CXXConversionFunctionName &&
2158 "Name must refer to a conversion function");
2159 return new (C, RD) CXXConversionDecl(C, RD, StartLoc, NameInfo, T, TInfo,
2160 isInline, isExplicit, isConstexpr,
2164 bool CXXConversionDecl::isLambdaToBlockPointerConversion() const {
2165 return isImplicit() && getParent()->isLambda() &&
2166 getConversionType()->isBlockPointerType();
2169 void LinkageSpecDecl::anchor() { }
2171 LinkageSpecDecl *LinkageSpecDecl::Create(ASTContext &C,
2173 SourceLocation ExternLoc,
2174 SourceLocation LangLoc,
2177 return new (C, DC) LinkageSpecDecl(DC, ExternLoc, LangLoc, Lang, HasBraces);
2180 LinkageSpecDecl *LinkageSpecDecl::CreateDeserialized(ASTContext &C,
2182 return new (C, ID) LinkageSpecDecl(nullptr, SourceLocation(),
2183 SourceLocation(), lang_c, false);
2186 void UsingDirectiveDecl::anchor() { }
2188 UsingDirectiveDecl *UsingDirectiveDecl::Create(ASTContext &C, DeclContext *DC,
2190 SourceLocation NamespaceLoc,
2191 NestedNameSpecifierLoc QualifierLoc,
2192 SourceLocation IdentLoc,
2194 DeclContext *CommonAncestor) {
2195 if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Used))
2196 Used = NS->getOriginalNamespace();
2197 return new (C, DC) UsingDirectiveDecl(DC, L, NamespaceLoc, QualifierLoc,
2198 IdentLoc, Used, CommonAncestor);
2201 UsingDirectiveDecl *UsingDirectiveDecl::CreateDeserialized(ASTContext &C,
2203 return new (C, ID) UsingDirectiveDecl(nullptr, SourceLocation(),
2205 NestedNameSpecifierLoc(),
2206 SourceLocation(), nullptr, nullptr);
2209 NamespaceDecl *UsingDirectiveDecl::getNominatedNamespace() {
2210 if (NamespaceAliasDecl *NA =
2211 dyn_cast_or_null<NamespaceAliasDecl>(NominatedNamespace))
2212 return NA->getNamespace();
2213 return cast_or_null<NamespaceDecl>(NominatedNamespace);
2216 NamespaceDecl::NamespaceDecl(ASTContext &C, DeclContext *DC, bool Inline,
2217 SourceLocation StartLoc, SourceLocation IdLoc,
2218 IdentifierInfo *Id, NamespaceDecl *PrevDecl)
2219 : NamedDecl(Namespace, DC, IdLoc, Id), DeclContext(Namespace),
2220 redeclarable_base(C), LocStart(StartLoc), RBraceLoc(),
2221 AnonOrFirstNamespaceAndInline(nullptr, Inline) {
2222 setPreviousDecl(PrevDecl);
2225 AnonOrFirstNamespaceAndInline.setPointer(PrevDecl->getOriginalNamespace());
2228 NamespaceDecl *NamespaceDecl::Create(ASTContext &C, DeclContext *DC,
2229 bool Inline, SourceLocation StartLoc,
2230 SourceLocation IdLoc, IdentifierInfo *Id,
2231 NamespaceDecl *PrevDecl) {
2232 return new (C, DC) NamespaceDecl(C, DC, Inline, StartLoc, IdLoc, Id,
2236 NamespaceDecl *NamespaceDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2237 return new (C, ID) NamespaceDecl(C, nullptr, false, SourceLocation(),
2238 SourceLocation(), nullptr, nullptr);
2241 NamespaceDecl *NamespaceDecl::getOriginalNamespace() {
2245 return AnonOrFirstNamespaceAndInline.getPointer();
2248 const NamespaceDecl *NamespaceDecl::getOriginalNamespace() const {
2252 return AnonOrFirstNamespaceAndInline.getPointer();
2255 bool NamespaceDecl::isOriginalNamespace() const { return isFirstDecl(); }
2257 NamespaceDecl *NamespaceDecl::getNextRedeclarationImpl() {
2258 return getNextRedeclaration();
2260 NamespaceDecl *NamespaceDecl::getPreviousDeclImpl() {
2261 return getPreviousDecl();
2263 NamespaceDecl *NamespaceDecl::getMostRecentDeclImpl() {
2264 return getMostRecentDecl();
2267 void NamespaceAliasDecl::anchor() { }
2269 NamespaceAliasDecl *NamespaceAliasDecl::getNextRedeclarationImpl() {
2270 return getNextRedeclaration();
2272 NamespaceAliasDecl *NamespaceAliasDecl::getPreviousDeclImpl() {
2273 return getPreviousDecl();
2275 NamespaceAliasDecl *NamespaceAliasDecl::getMostRecentDeclImpl() {
2276 return getMostRecentDecl();
2279 NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC,
2280 SourceLocation UsingLoc,
2281 SourceLocation AliasLoc,
2282 IdentifierInfo *Alias,
2283 NestedNameSpecifierLoc QualifierLoc,
2284 SourceLocation IdentLoc,
2285 NamedDecl *Namespace) {
2286 // FIXME: Preserve the aliased namespace as written.
2287 if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Namespace))
2288 Namespace = NS->getOriginalNamespace();
2289 return new (C, DC) NamespaceAliasDecl(C, DC, UsingLoc, AliasLoc, Alias,
2290 QualifierLoc, IdentLoc, Namespace);
2293 NamespaceAliasDecl *
2294 NamespaceAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2295 return new (C, ID) NamespaceAliasDecl(C, nullptr, SourceLocation(),
2296 SourceLocation(), nullptr,
2297 NestedNameSpecifierLoc(),
2298 SourceLocation(), nullptr);
2301 void UsingShadowDecl::anchor() { }
2303 UsingShadowDecl::UsingShadowDecl(Kind K, ASTContext &C, DeclContext *DC,
2304 SourceLocation Loc, UsingDecl *Using,
2306 : NamedDecl(K, DC, Loc, Using ? Using->getDeclName() : DeclarationName()),
2307 redeclarable_base(C), Underlying(Target),
2308 UsingOrNextShadow(cast<NamedDecl>(Using)) {
2310 IdentifierNamespace = Target->getIdentifierNamespace();
2314 UsingShadowDecl::UsingShadowDecl(Kind K, ASTContext &C, EmptyShell Empty)
2315 : NamedDecl(K, nullptr, SourceLocation(), DeclarationName()),
2316 redeclarable_base(C), Underlying(), UsingOrNextShadow() {}
2319 UsingShadowDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2320 return new (C, ID) UsingShadowDecl(UsingShadow, C, EmptyShell());
2323 UsingDecl *UsingShadowDecl::getUsingDecl() const {
2324 const UsingShadowDecl *Shadow = this;
2325 while (const UsingShadowDecl *NextShadow =
2326 dyn_cast<UsingShadowDecl>(Shadow->UsingOrNextShadow))
2327 Shadow = NextShadow;
2328 return cast<UsingDecl>(Shadow->UsingOrNextShadow);
2331 void ConstructorUsingShadowDecl::anchor() { }
2333 ConstructorUsingShadowDecl *
2334 ConstructorUsingShadowDecl::Create(ASTContext &C, DeclContext *DC,
2335 SourceLocation Loc, UsingDecl *Using,
2336 NamedDecl *Target, bool IsVirtual) {
2337 return new (C, DC) ConstructorUsingShadowDecl(C, DC, Loc, Using, Target,
2341 ConstructorUsingShadowDecl *
2342 ConstructorUsingShadowDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2343 return new (C, ID) ConstructorUsingShadowDecl(C, EmptyShell());
2346 CXXRecordDecl *ConstructorUsingShadowDecl::getNominatedBaseClass() const {
2347 return getUsingDecl()->getQualifier()->getAsRecordDecl();
2350 void UsingDecl::anchor() { }
2352 void UsingDecl::addShadowDecl(UsingShadowDecl *S) {
2353 assert(std::find(shadow_begin(), shadow_end(), S) == shadow_end() &&
2354 "declaration already in set");
2355 assert(S->getUsingDecl() == this);
2357 if (FirstUsingShadow.getPointer())
2358 S->UsingOrNextShadow = FirstUsingShadow.getPointer();
2359 FirstUsingShadow.setPointer(S);
2362 void UsingDecl::removeShadowDecl(UsingShadowDecl *S) {
2363 assert(std::find(shadow_begin(), shadow_end(), S) != shadow_end() &&
2364 "declaration not in set");
2365 assert(S->getUsingDecl() == this);
2367 // Remove S from the shadow decl chain. This is O(n) but hopefully rare.
2369 if (FirstUsingShadow.getPointer() == S) {
2370 FirstUsingShadow.setPointer(
2371 dyn_cast<UsingShadowDecl>(S->UsingOrNextShadow));
2372 S->UsingOrNextShadow = this;
2376 UsingShadowDecl *Prev = FirstUsingShadow.getPointer();
2377 while (Prev->UsingOrNextShadow != S)
2378 Prev = cast<UsingShadowDecl>(Prev->UsingOrNextShadow);
2379 Prev->UsingOrNextShadow = S->UsingOrNextShadow;
2380 S->UsingOrNextShadow = this;
2383 UsingDecl *UsingDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation UL,
2384 NestedNameSpecifierLoc QualifierLoc,
2385 const DeclarationNameInfo &NameInfo,
2387 return new (C, DC) UsingDecl(DC, UL, QualifierLoc, NameInfo, HasTypename);
2390 UsingDecl *UsingDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2391 return new (C, ID) UsingDecl(nullptr, SourceLocation(),
2392 NestedNameSpecifierLoc(), DeclarationNameInfo(),
2396 SourceRange UsingDecl::getSourceRange() const {
2397 SourceLocation Begin = isAccessDeclaration()
2398 ? getQualifierLoc().getBeginLoc() : UsingLocation;
2399 return SourceRange(Begin, getNameInfo().getEndLoc());
2402 void UsingPackDecl::anchor() { }
2404 UsingPackDecl *UsingPackDecl::Create(ASTContext &C, DeclContext *DC,
2405 NamedDecl *InstantiatedFrom,
2406 ArrayRef<NamedDecl *> UsingDecls) {
2407 size_t Extra = additionalSizeToAlloc<NamedDecl *>(UsingDecls.size());
2408 return new (C, DC, Extra) UsingPackDecl(DC, InstantiatedFrom, UsingDecls);
2411 UsingPackDecl *UsingPackDecl::CreateDeserialized(ASTContext &C, unsigned ID,
2412 unsigned NumExpansions) {
2413 size_t Extra = additionalSizeToAlloc<NamedDecl *>(NumExpansions);
2414 auto *Result = new (C, ID, Extra) UsingPackDecl(nullptr, nullptr, None);
2415 Result->NumExpansions = NumExpansions;
2416 auto *Trail = Result->getTrailingObjects<NamedDecl *>();
2417 for (unsigned I = 0; I != NumExpansions; ++I)
2418 new (Trail + I) NamedDecl*(nullptr);
2422 void UnresolvedUsingValueDecl::anchor() { }
2424 UnresolvedUsingValueDecl *
2425 UnresolvedUsingValueDecl::Create(ASTContext &C, DeclContext *DC,
2426 SourceLocation UsingLoc,
2427 NestedNameSpecifierLoc QualifierLoc,
2428 const DeclarationNameInfo &NameInfo,
2429 SourceLocation EllipsisLoc) {
2430 return new (C, DC) UnresolvedUsingValueDecl(DC, C.DependentTy, UsingLoc,
2431 QualifierLoc, NameInfo,
2435 UnresolvedUsingValueDecl *
2436 UnresolvedUsingValueDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2437 return new (C, ID) UnresolvedUsingValueDecl(nullptr, QualType(),
2439 NestedNameSpecifierLoc(),
2440 DeclarationNameInfo(),
2444 SourceRange UnresolvedUsingValueDecl::getSourceRange() const {
2445 SourceLocation Begin = isAccessDeclaration()
2446 ? getQualifierLoc().getBeginLoc() : UsingLocation;
2447 return SourceRange(Begin, getNameInfo().getEndLoc());
2450 void UnresolvedUsingTypenameDecl::anchor() { }
2452 UnresolvedUsingTypenameDecl *
2453 UnresolvedUsingTypenameDecl::Create(ASTContext &C, DeclContext *DC,
2454 SourceLocation UsingLoc,
2455 SourceLocation TypenameLoc,
2456 NestedNameSpecifierLoc QualifierLoc,
2457 SourceLocation TargetNameLoc,
2458 DeclarationName TargetName,
2459 SourceLocation EllipsisLoc) {
2460 return new (C, DC) UnresolvedUsingTypenameDecl(
2461 DC, UsingLoc, TypenameLoc, QualifierLoc, TargetNameLoc,
2462 TargetName.getAsIdentifierInfo(), EllipsisLoc);
2465 UnresolvedUsingTypenameDecl *
2466 UnresolvedUsingTypenameDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2467 return new (C, ID) UnresolvedUsingTypenameDecl(
2468 nullptr, SourceLocation(), SourceLocation(), NestedNameSpecifierLoc(),
2469 SourceLocation(), nullptr, SourceLocation());
2472 void StaticAssertDecl::anchor() { }
2474 StaticAssertDecl *StaticAssertDecl::Create(ASTContext &C, DeclContext *DC,
2475 SourceLocation StaticAssertLoc,
2477 StringLiteral *Message,
2478 SourceLocation RParenLoc,
2480 return new (C, DC) StaticAssertDecl(DC, StaticAssertLoc, AssertExpr, Message,
2484 StaticAssertDecl *StaticAssertDecl::CreateDeserialized(ASTContext &C,
2486 return new (C, ID) StaticAssertDecl(nullptr, SourceLocation(), nullptr,
2487 nullptr, SourceLocation(), false);
2490 void BindingDecl::anchor() {}
2492 BindingDecl *BindingDecl::Create(ASTContext &C, DeclContext *DC,
2493 SourceLocation IdLoc, IdentifierInfo *Id) {
2494 return new (C, DC) BindingDecl(DC, IdLoc, Id);
2497 BindingDecl *BindingDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2498 return new (C, ID) BindingDecl(nullptr, SourceLocation(), nullptr);
2501 VarDecl *BindingDecl::getHoldingVar() const {
2502 Expr *B = getBinding();
2505 auto *DRE = dyn_cast<DeclRefExpr>(B->IgnoreImplicit());
2509 auto *VD = dyn_cast<VarDecl>(DRE->getDecl());
2510 assert(VD->isImplicit() && "holding var for binding decl not implicit");
2514 void DecompositionDecl::anchor() {}
2516 DecompositionDecl *DecompositionDecl::Create(ASTContext &C, DeclContext *DC,
2517 SourceLocation StartLoc,
2518 SourceLocation LSquareLoc,
2519 QualType T, TypeSourceInfo *TInfo,
2521 ArrayRef<BindingDecl *> Bindings) {
2522 size_t Extra = additionalSizeToAlloc<BindingDecl *>(Bindings.size());
2523 return new (C, DC, Extra)
2524 DecompositionDecl(C, DC, StartLoc, LSquareLoc, T, TInfo, SC, Bindings);
2527 DecompositionDecl *DecompositionDecl::CreateDeserialized(ASTContext &C,
2529 unsigned NumBindings) {
2530 size_t Extra = additionalSizeToAlloc<BindingDecl *>(NumBindings);
2531 auto *Result = new (C, ID, Extra)
2532 DecompositionDecl(C, nullptr, SourceLocation(), SourceLocation(),
2533 QualType(), nullptr, StorageClass(), None);
2534 // Set up and clean out the bindings array.
2535 Result->NumBindings = NumBindings;
2536 auto *Trail = Result->getTrailingObjects<BindingDecl *>();
2537 for (unsigned I = 0; I != NumBindings; ++I)
2538 new (Trail + I) BindingDecl*(nullptr);
2542 void DecompositionDecl::printName(llvm::raw_ostream &os) const {
2545 for (auto *B : bindings()) {
2554 MSPropertyDecl *MSPropertyDecl::Create(ASTContext &C, DeclContext *DC,
2555 SourceLocation L, DeclarationName N,
2556 QualType T, TypeSourceInfo *TInfo,
2557 SourceLocation StartL,
2558 IdentifierInfo *Getter,
2559 IdentifierInfo *Setter) {
2560 return new (C, DC) MSPropertyDecl(DC, L, N, T, TInfo, StartL, Getter, Setter);
2563 MSPropertyDecl *MSPropertyDecl::CreateDeserialized(ASTContext &C,
2565 return new (C, ID) MSPropertyDecl(nullptr, SourceLocation(),
2566 DeclarationName(), QualType(), nullptr,
2567 SourceLocation(), nullptr, nullptr);
2570 static const char *getAccessName(AccessSpecifier AS) {
2573 llvm_unreachable("Invalid access specifier!");
2581 llvm_unreachable("Invalid access specifier!");
2584 const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
2585 AccessSpecifier AS) {
2586 return DB << getAccessName(AS);
2589 const PartialDiagnostic &clang::operator<<(const PartialDiagnostic &DB,
2590 AccessSpecifier AS) {
2591 return DB << getAccessName(AS);