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 NeedOverloadResolutionForMoveConstructor(false),
59 NeedOverloadResolutionForMoveAssignment(false),
60 NeedOverloadResolutionForDestructor(false),
61 DefaultedMoveConstructorIsDeleted(false),
62 DefaultedMoveAssignmentIsDeleted(false),
63 DefaultedDestructorIsDeleted(false), HasTrivialSpecialMembers(SMF_All),
64 DeclaredNonTrivialSpecialMembers(0), HasIrrelevantDestructor(true),
65 HasConstexprNonCopyMoveConstructor(false),
66 HasDefaultedDefaultConstructor(false),
67 DefaultedDefaultConstructorIsConstexpr(true),
68 HasConstexprDefaultConstructor(false),
69 HasNonLiteralTypeFieldsOrBases(false), ComputedVisibleConversions(false),
70 UserProvidedDefaultConstructor(false), DeclaredSpecialMembers(0),
71 ImplicitCopyConstructorCanHaveConstParamForVBase(true),
72 ImplicitCopyConstructorCanHaveConstParamForNonVBase(true),
73 ImplicitCopyAssignmentHasConstParam(true),
74 HasDeclaredCopyConstructorWithConstParam(false),
75 HasDeclaredCopyAssignmentWithConstParam(false), IsLambda(false),
76 IsParsingBaseSpecifiers(false), HasODRHash(false), ODRHash(0),
77 NumBases(0), NumVBases(0), Bases(), VBases(), Definition(D),
80 CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getBasesSlowCase() const {
81 return Bases.get(Definition->getASTContext().getExternalSource());
84 CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getVBasesSlowCase() const {
85 return VBases.get(Definition->getASTContext().getExternalSource());
88 CXXRecordDecl::CXXRecordDecl(Kind K, TagKind TK, const ASTContext &C,
89 DeclContext *DC, SourceLocation StartLoc,
90 SourceLocation IdLoc, IdentifierInfo *Id,
91 CXXRecordDecl *PrevDecl)
92 : RecordDecl(K, TK, C, DC, StartLoc, IdLoc, Id, PrevDecl),
93 DefinitionData(PrevDecl ? PrevDecl->DefinitionData
95 TemplateOrInstantiation() {}
97 CXXRecordDecl *CXXRecordDecl::Create(const ASTContext &C, TagKind TK,
98 DeclContext *DC, SourceLocation StartLoc,
99 SourceLocation IdLoc, IdentifierInfo *Id,
100 CXXRecordDecl* PrevDecl,
101 bool DelayTypeCreation) {
102 CXXRecordDecl *R = new (C, DC) CXXRecordDecl(CXXRecord, TK, C, DC, StartLoc,
103 IdLoc, Id, PrevDecl);
104 R->MayHaveOutOfDateDef = C.getLangOpts().Modules;
106 // FIXME: DelayTypeCreation seems like such a hack
107 if (!DelayTypeCreation)
108 C.getTypeDeclType(R, PrevDecl);
113 CXXRecordDecl::CreateLambda(const ASTContext &C, DeclContext *DC,
114 TypeSourceInfo *Info, SourceLocation Loc,
115 bool Dependent, bool IsGeneric,
116 LambdaCaptureDefault CaptureDefault) {
118 new (C, DC) CXXRecordDecl(CXXRecord, TTK_Class, C, DC, Loc, Loc,
120 R->IsBeingDefined = true;
122 new (C) struct LambdaDefinitionData(R, Info, Dependent, IsGeneric,
124 R->MayHaveOutOfDateDef = false;
125 R->setImplicit(true);
126 C.getTypeDeclType(R, /*PrevDecl=*/nullptr);
131 CXXRecordDecl::CreateDeserialized(const ASTContext &C, unsigned ID) {
132 CXXRecordDecl *R = new (C, ID) CXXRecordDecl(
133 CXXRecord, TTK_Struct, C, nullptr, SourceLocation(), SourceLocation(),
135 R->MayHaveOutOfDateDef = false;
140 CXXRecordDecl::setBases(CXXBaseSpecifier const * const *Bases,
142 ASTContext &C = getASTContext();
144 if (!data().Bases.isOffset() && data().NumBases > 0)
145 C.Deallocate(data().getBases());
148 if (!C.getLangOpts().CPlusPlus1z) {
149 // C++ [dcl.init.aggr]p1:
150 // An aggregate is [...] a class with [...] no base classes [...].
151 data().Aggregate = false;
155 // A POD-struct is an aggregate class...
156 data().PlainOldData = false;
159 // The set of seen virtual base types.
160 llvm::SmallPtrSet<CanQualType, 8> SeenVBaseTypes;
162 // The virtual bases of this class.
163 SmallVector<const CXXBaseSpecifier *, 8> VBases;
165 data().Bases = new(C) CXXBaseSpecifier [NumBases];
166 data().NumBases = NumBases;
167 for (unsigned i = 0; i < NumBases; ++i) {
168 data().getBases()[i] = *Bases[i];
169 // Keep track of inherited vbases for this base class.
170 const CXXBaseSpecifier *Base = Bases[i];
171 QualType BaseType = Base->getType();
172 // Skip dependent types; we can't do any checking on them now.
173 if (BaseType->isDependentType())
175 CXXRecordDecl *BaseClassDecl
176 = cast<CXXRecordDecl>(BaseType->getAs<RecordType>()->getDecl());
178 if (!BaseClassDecl->isEmpty()) {
181 // A standard-layout class is a class that:
183 // -- either has no non-static data members in the most derived
184 // class and at most one base class with non-static data members,
185 // or has no base classes with non-static data members, and
186 // If this is the second non-empty base, then neither of these two
187 // clauses can be true.
188 data().IsStandardLayout = false;
191 // C++14 [meta.unary.prop]p4:
192 // T is a class type [...] with [...] no base class B for which
193 // is_empty<B>::value is false.
194 data().Empty = false;
195 data().HasNoNonEmptyBases = false;
198 // C++1z [dcl.init.agg]p1:
199 // An aggregate is a class with [...] no private or protected base classes
200 if (Base->getAccessSpecifier() != AS_public)
201 data().Aggregate = false;
203 // C++ [class.virtual]p1:
204 // A class that declares or inherits a virtual function is called a
205 // polymorphic class.
206 if (BaseClassDecl->isPolymorphic())
207 data().Polymorphic = true;
210 // A standard-layout class is a class that: [...]
211 // -- has no non-standard-layout base classes
212 if (!BaseClassDecl->isStandardLayout())
213 data().IsStandardLayout = false;
215 // Record if this base is the first non-literal field or base.
216 if (!hasNonLiteralTypeFieldsOrBases() && !BaseType->isLiteralType(C))
217 data().HasNonLiteralTypeFieldsOrBases = true;
219 // Now go through all virtual bases of this base and add them.
220 for (const auto &VBase : BaseClassDecl->vbases()) {
221 // Add this base if it's not already in the list.
222 if (SeenVBaseTypes.insert(C.getCanonicalType(VBase.getType())).second) {
223 VBases.push_back(&VBase);
225 // C++11 [class.copy]p8:
226 // The implicitly-declared copy constructor for a class X will have
227 // the form 'X::X(const X&)' if each [...] virtual base class B of X
228 // has a copy constructor whose first parameter is of type
229 // 'const B&' or 'const volatile B&' [...]
230 if (CXXRecordDecl *VBaseDecl = VBase.getType()->getAsCXXRecordDecl())
231 if (!VBaseDecl->hasCopyConstructorWithConstParam())
232 data().ImplicitCopyConstructorCanHaveConstParamForVBase = false;
234 // C++1z [dcl.init.agg]p1:
235 // An aggregate is a class with [...] no virtual base classes
236 data().Aggregate = false;
240 if (Base->isVirtual()) {
241 // Add this base if it's not already in the list.
242 if (SeenVBaseTypes.insert(C.getCanonicalType(BaseType)).second)
243 VBases.push_back(Base);
245 // C++14 [meta.unary.prop] is_empty:
246 // T is a class type, but not a union type, with ... no virtual base
248 data().Empty = false;
250 // C++1z [dcl.init.agg]p1:
251 // An aggregate is a class with [...] no virtual base classes
252 data().Aggregate = false;
254 // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25:
255 // A [default constructor, copy/move constructor, or copy/move assignment
256 // operator for a class X] is trivial [...] if:
257 // -- class X has [...] no virtual base classes
258 data().HasTrivialSpecialMembers &= SMF_Destructor;
261 // A standard-layout class is a class that: [...]
262 // -- has [...] no virtual base classes
263 data().IsStandardLayout = false;
265 // C++11 [dcl.constexpr]p4:
266 // In the definition of a constexpr constructor [...]
267 // -- the class shall not have any virtual base classes
268 data().DefaultedDefaultConstructorIsConstexpr = false;
270 // C++1z [class.copy]p8:
271 // The implicitly-declared copy constructor for a class X will have
272 // the form 'X::X(const X&)' if each potentially constructed subobject
273 // has a copy constructor whose first parameter is of type
274 // 'const B&' or 'const volatile B&' [...]
275 if (!BaseClassDecl->hasCopyConstructorWithConstParam())
276 data().ImplicitCopyConstructorCanHaveConstParamForVBase = false;
278 // C++ [class.ctor]p5:
279 // A default constructor is trivial [...] if:
280 // -- all the direct base classes of its class have trivial default
282 if (!BaseClassDecl->hasTrivialDefaultConstructor())
283 data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor;
285 // C++0x [class.copy]p13:
286 // A copy/move constructor for class X is trivial if [...]
288 // -- the constructor selected to copy/move each direct base class
289 // subobject is trivial, and
290 if (!BaseClassDecl->hasTrivialCopyConstructor())
291 data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor;
292 // If the base class doesn't have a simple move constructor, we'll eagerly
293 // declare it and perform overload resolution to determine which function
294 // it actually calls. If it does have a simple move constructor, this
296 if (!BaseClassDecl->hasTrivialMoveConstructor())
297 data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor;
299 // C++0x [class.copy]p27:
300 // A copy/move assignment operator for class X is trivial if [...]
302 // -- the assignment operator selected to copy/move each direct base
303 // class subobject is trivial, and
304 if (!BaseClassDecl->hasTrivialCopyAssignment())
305 data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment;
306 // If the base class doesn't have a simple move assignment, we'll eagerly
307 // declare it and perform overload resolution to determine which function
308 // it actually calls. If it does have a simple move assignment, this
310 if (!BaseClassDecl->hasTrivialMoveAssignment())
311 data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment;
313 // C++11 [class.ctor]p6:
314 // If that user-written default constructor would satisfy the
315 // requirements of a constexpr constructor, the implicitly-defined
316 // default constructor is constexpr.
317 if (!BaseClassDecl->hasConstexprDefaultConstructor())
318 data().DefaultedDefaultConstructorIsConstexpr = false;
320 // C++1z [class.copy]p8:
321 // The implicitly-declared copy constructor for a class X will have
322 // the form 'X::X(const X&)' if each potentially constructed subobject
323 // has a copy constructor whose first parameter is of type
324 // 'const B&' or 'const volatile B&' [...]
325 if (!BaseClassDecl->hasCopyConstructorWithConstParam())
326 data().ImplicitCopyConstructorCanHaveConstParamForNonVBase = false;
329 // C++ [class.ctor]p3:
330 // A destructor is trivial if all the direct base classes of its class
331 // have trivial destructors.
332 if (!BaseClassDecl->hasTrivialDestructor())
333 data().HasTrivialSpecialMembers &= ~SMF_Destructor;
335 if (!BaseClassDecl->hasIrrelevantDestructor())
336 data().HasIrrelevantDestructor = false;
338 // C++11 [class.copy]p18:
339 // The implicitly-declared copy assignment oeprator for a class X will
340 // have the form 'X& X::operator=(const X&)' if each direct base class B
341 // of X has a copy assignment operator whose parameter is of type 'const
342 // B&', 'const volatile B&', or 'B' [...]
343 if (!BaseClassDecl->hasCopyAssignmentWithConstParam())
344 data().ImplicitCopyAssignmentHasConstParam = false;
346 // A class has an Objective-C object member if... or any of its bases
347 // has an Objective-C object member.
348 if (BaseClassDecl->hasObjectMember())
349 setHasObjectMember(true);
351 if (BaseClassDecl->hasVolatileMember())
352 setHasVolatileMember(true);
354 // Keep track of the presence of mutable fields.
355 if (BaseClassDecl->hasMutableFields())
356 data().HasMutableFields = true;
358 if (BaseClassDecl->hasUninitializedReferenceMember())
359 data().HasUninitializedReferenceMember = true;
361 if (!BaseClassDecl->allowConstDefaultInit())
362 data().HasUninitializedFields = true;
364 addedClassSubobject(BaseClassDecl);
367 if (VBases.empty()) {
368 data().IsParsingBaseSpecifiers = false;
372 // Create base specifier for any direct or indirect virtual bases.
373 data().VBases = new (C) CXXBaseSpecifier[VBases.size()];
374 data().NumVBases = VBases.size();
375 for (int I = 0, E = VBases.size(); I != E; ++I) {
376 QualType Type = VBases[I]->getType();
377 if (!Type->isDependentType())
378 addedClassSubobject(Type->getAsCXXRecordDecl());
379 data().getVBases()[I] = *VBases[I];
382 data().IsParsingBaseSpecifiers = false;
385 unsigned CXXRecordDecl::getODRHash() const {
386 assert(hasDefinition() && "ODRHash only for records with definitions");
388 // Previously calculated hash is stored in DefinitionData.
389 if (DefinitionData->HasODRHash)
390 return DefinitionData->ODRHash;
392 // Only calculate hash on first call of getODRHash per record.
394 Hash.AddCXXRecordDecl(getDefinition());
395 DefinitionData->HasODRHash = true;
396 DefinitionData->ODRHash = Hash.CalculateHash();
398 return DefinitionData->ODRHash;
402 void CXXRecordDecl::addedClassSubobject(CXXRecordDecl *Subobj) {
403 // C++11 [class.copy]p11:
404 // A defaulted copy/move constructor for a class X is defined as
406 // -- a direct or virtual base class B that cannot be copied/moved [...]
407 // -- a non-static data member of class type M (or array thereof)
408 // that cannot be copied or moved [...]
409 if (!Subobj->hasSimpleMoveConstructor())
410 data().NeedOverloadResolutionForMoveConstructor = true;
412 // C++11 [class.copy]p23:
413 // A defaulted copy/move assignment operator for a class X is defined as
415 // -- a direct or virtual base class B that cannot be copied/moved [...]
416 // -- a non-static data member of class type M (or array thereof)
417 // that cannot be copied or moved [...]
418 if (!Subobj->hasSimpleMoveAssignment())
419 data().NeedOverloadResolutionForMoveAssignment = true;
421 // C++11 [class.ctor]p5, C++11 [class.copy]p11, C++11 [class.dtor]p5:
422 // A defaulted [ctor or dtor] for a class X is defined as
424 // -- any direct or virtual base class [...] has a type with a destructor
425 // that is deleted or inaccessible from the defaulted [ctor or dtor].
426 // -- any non-static data member has a type with a destructor
427 // that is deleted or inaccessible from the defaulted [ctor or dtor].
428 if (!Subobj->hasSimpleDestructor()) {
429 data().NeedOverloadResolutionForMoveConstructor = true;
430 data().NeedOverloadResolutionForDestructor = true;
434 bool CXXRecordDecl::hasAnyDependentBases() const {
435 if (!isDependentContext())
438 return !forallBases([](const CXXRecordDecl *) { return true; });
441 bool CXXRecordDecl::isTriviallyCopyable() const {
443 // A trivially copyable class is a class that:
444 // -- has no non-trivial copy constructors,
445 if (hasNonTrivialCopyConstructor()) return false;
446 // -- has no non-trivial move constructors,
447 if (hasNonTrivialMoveConstructor()) return false;
448 // -- has no non-trivial copy assignment operators,
449 if (hasNonTrivialCopyAssignment()) return false;
450 // -- has no non-trivial move assignment operators, and
451 if (hasNonTrivialMoveAssignment()) return false;
452 // -- has a trivial destructor.
453 if (!hasTrivialDestructor()) return false;
458 void CXXRecordDecl::markedVirtualFunctionPure() {
459 // C++ [class.abstract]p2:
460 // A class is abstract if it has at least one pure virtual function.
461 data().Abstract = true;
464 void CXXRecordDecl::addedMember(Decl *D) {
465 if (!D->isImplicit() &&
466 !isa<FieldDecl>(D) &&
467 !isa<IndirectFieldDecl>(D) &&
468 (!isa<TagDecl>(D) || cast<TagDecl>(D)->getTagKind() == TTK_Class ||
469 cast<TagDecl>(D)->getTagKind() == TTK_Interface))
470 data().HasOnlyCMembers = false;
472 // Ignore friends and invalid declarations.
473 if (D->getFriendObjectKind() || D->isInvalidDecl())
476 FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(D);
478 D = FunTmpl->getTemplatedDecl();
480 // FIXME: Pass NamedDecl* to addedMember?
481 Decl *DUnderlying = D;
482 if (auto *ND = dyn_cast<NamedDecl>(DUnderlying)) {
483 DUnderlying = ND->getUnderlyingDecl();
484 if (FunctionTemplateDecl *UnderlyingFunTmpl =
485 dyn_cast<FunctionTemplateDecl>(DUnderlying))
486 DUnderlying = UnderlyingFunTmpl->getTemplatedDecl();
489 if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
490 if (Method->isVirtual()) {
491 // C++ [dcl.init.aggr]p1:
492 // An aggregate is an array or a class with [...] no virtual functions.
493 data().Aggregate = false;
496 // A POD-struct is an aggregate class...
497 data().PlainOldData = false;
499 // C++14 [meta.unary.prop]p4:
500 // T is a class type [...] with [...] no virtual member functions...
501 data().Empty = false;
503 // C++ [class.virtual]p1:
504 // A class that declares or inherits a virtual function is called a
505 // polymorphic class.
506 data().Polymorphic = true;
508 // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25:
509 // A [default constructor, copy/move constructor, or copy/move
510 // assignment operator for a class X] is trivial [...] if:
511 // -- class X has no virtual functions [...]
512 data().HasTrivialSpecialMembers &= SMF_Destructor;
515 // A standard-layout class is a class that: [...]
516 // -- has no virtual functions
517 data().IsStandardLayout = false;
521 // Notify the listener if an implicit member was added after the definition
523 if (!isBeingDefined() && D->isImplicit())
524 if (ASTMutationListener *L = getASTMutationListener())
525 L->AddedCXXImplicitMember(data().Definition, D);
527 // The kind of special member this declaration is, if any.
530 // Handle constructors.
531 if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) {
532 if (!Constructor->isImplicit()) {
533 // Note that we have a user-declared constructor.
534 data().UserDeclaredConstructor = true;
537 // A POD-struct is an aggregate class [...]
538 // Since the POD bit is meant to be C++03 POD-ness, clear it even if the
539 // type is technically an aggregate in C++0x since it wouldn't be in 03.
540 data().PlainOldData = false;
543 if (Constructor->isDefaultConstructor()) {
544 SMKind |= SMF_DefaultConstructor;
546 if (Constructor->isUserProvided())
547 data().UserProvidedDefaultConstructor = true;
548 if (Constructor->isConstexpr())
549 data().HasConstexprDefaultConstructor = true;
550 if (Constructor->isDefaulted())
551 data().HasDefaultedDefaultConstructor = true;
556 if (Constructor->isCopyConstructor(Quals)) {
557 SMKind |= SMF_CopyConstructor;
559 if (Quals & Qualifiers::Const)
560 data().HasDeclaredCopyConstructorWithConstParam = true;
561 } else if (Constructor->isMoveConstructor())
562 SMKind |= SMF_MoveConstructor;
565 // C++11 [dcl.init.aggr]p1: DR1518
566 // An aggregate is an array or a class with no user-provided, explicit, or
567 // inherited constructors
568 if (Constructor->isUserProvided() || Constructor->isExplicit())
569 data().Aggregate = false;
572 // Handle constructors, including those inherited from base classes.
573 if (CXXConstructorDecl *Constructor =
574 dyn_cast<CXXConstructorDecl>(DUnderlying)) {
575 // Record if we see any constexpr constructors which are neither copy
576 // nor move constructors.
577 // C++1z [basic.types]p10:
578 // [...] has at least one constexpr constructor or constructor template
579 // (possibly inherited from a base class) that is not a copy or move
581 if (Constructor->isConstexpr() && !Constructor->isCopyOrMoveConstructor())
582 data().HasConstexprNonCopyMoveConstructor = true;
585 // Handle destructors.
586 if (CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(D)) {
587 SMKind |= SMF_Destructor;
589 if (DD->isUserProvided())
590 data().HasIrrelevantDestructor = false;
591 // If the destructor is explicitly defaulted and not trivial or not public
592 // or if the destructor is deleted, we clear HasIrrelevantDestructor in
593 // finishedDefaultedOrDeletedMember.
595 // C++11 [class.dtor]p5:
596 // A destructor is trivial if [...] the destructor is not virtual.
598 data().HasTrivialSpecialMembers &= ~SMF_Destructor;
601 // Handle member functions.
602 if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
603 if (Method->isCopyAssignmentOperator()) {
604 SMKind |= SMF_CopyAssignment;
606 const ReferenceType *ParamTy =
607 Method->getParamDecl(0)->getType()->getAs<ReferenceType>();
608 if (!ParamTy || ParamTy->getPointeeType().isConstQualified())
609 data().HasDeclaredCopyAssignmentWithConstParam = true;
612 if (Method->isMoveAssignmentOperator())
613 SMKind |= SMF_MoveAssignment;
615 // Keep the list of conversion functions up-to-date.
616 if (CXXConversionDecl *Conversion = dyn_cast<CXXConversionDecl>(D)) {
617 // FIXME: We use the 'unsafe' accessor for the access specifier here,
618 // because Sema may not have set it yet. That's really just a misdesign
619 // in Sema. However, LLDB *will* have set the access specifier correctly,
620 // and adds declarations after the class is technically completed,
621 // so completeDefinition()'s overriding of the access specifiers doesn't
623 AccessSpecifier AS = Conversion->getAccessUnsafe();
625 if (Conversion->getPrimaryTemplate()) {
626 // We don't record specializations.
628 ASTContext &Ctx = getASTContext();
629 ASTUnresolvedSet &Conversions = data().Conversions.get(Ctx);
631 FunTmpl ? cast<NamedDecl>(FunTmpl) : cast<NamedDecl>(Conversion);
632 if (Primary->getPreviousDecl())
633 Conversions.replace(cast<NamedDecl>(Primary->getPreviousDecl()),
636 Conversions.addDecl(Ctx, Primary, AS);
641 // If this is the first declaration of a special member, we no longer have
642 // an implicit trivial special member.
643 data().HasTrivialSpecialMembers &=
644 data().DeclaredSpecialMembers | ~SMKind;
646 if (!Method->isImplicit() && !Method->isUserProvided()) {
647 // This method is user-declared but not user-provided. We can't work out
648 // whether it's trivial yet (not until we get to the end of the class).
649 // We'll handle this method in finishedDefaultedOrDeletedMember.
650 } else if (Method->isTrivial())
651 data().HasTrivialSpecialMembers |= SMKind;
653 data().DeclaredNonTrivialSpecialMembers |= SMKind;
655 // Note when we have declared a declared special member, and suppress the
656 // implicit declaration of this special member.
657 data().DeclaredSpecialMembers |= SMKind;
659 if (!Method->isImplicit()) {
660 data().UserDeclaredSpecialMembers |= SMKind;
663 // A POD-struct is an aggregate class that has [...] no user-defined
664 // copy assignment operator and no user-defined destructor.
666 // Since the POD bit is meant to be C++03 POD-ness, and in C++03,
667 // aggregates could not have any constructors, clear it even for an
668 // explicitly defaulted or deleted constructor.
669 // type is technically an aggregate in C++0x since it wouldn't be in 03.
671 // Also, a user-declared move assignment operator makes a class non-POD.
672 // This is an extension in C++03.
673 data().PlainOldData = false;
680 // Handle non-static data members.
681 if (FieldDecl *Field = dyn_cast<FieldDecl>(D)) {
682 // C++ [class.bit]p2:
683 // A declaration for a bit-field that omits the identifier declares an
684 // unnamed bit-field. Unnamed bit-fields are not members and cannot be
686 if (Field->isUnnamedBitfield())
689 // C++ [dcl.init.aggr]p1:
690 // An aggregate is an array or a class (clause 9) with [...] no
691 // private or protected non-static data members (clause 11).
693 // A POD must be an aggregate.
694 if (D->getAccess() == AS_private || D->getAccess() == AS_protected) {
695 data().Aggregate = false;
696 data().PlainOldData = false;
700 // A standard-layout class is a class that:
702 // -- has the same access control for all non-static data members,
703 switch (D->getAccess()) {
704 case AS_private: data().HasPrivateFields = true; break;
705 case AS_protected: data().HasProtectedFields = true; break;
706 case AS_public: data().HasPublicFields = true; break;
707 case AS_none: llvm_unreachable("Invalid access specifier");
709 if ((data().HasPrivateFields + data().HasProtectedFields +
710 data().HasPublicFields) > 1)
711 data().IsStandardLayout = false;
713 // Keep track of the presence of mutable fields.
714 if (Field->isMutable())
715 data().HasMutableFields = true;
717 // C++11 [class.union]p8, DR1460:
718 // If X is a union, a non-static data member of X that is not an anonymous
719 // union is a variant member of X.
720 if (isUnion() && !Field->isAnonymousStructOrUnion())
721 data().HasVariantMembers = true;
724 // A POD struct is a class that is both a trivial class and a
725 // standard-layout class, and has no non-static data members of type
726 // non-POD struct, non-POD union (or array of such types).
728 // Automatic Reference Counting: the presence of a member of Objective-C pointer type
729 // that does not explicitly have no lifetime makes the class a non-POD.
730 ASTContext &Context = getASTContext();
731 QualType T = Context.getBaseElementType(Field->getType());
732 if (T->isObjCRetainableType() || T.isObjCGCStrong()) {
733 if (T.hasNonTrivialObjCLifetime()) {
734 // Objective-C Automatic Reference Counting:
735 // If a class has a non-static data member of Objective-C pointer
736 // type (or array thereof), it is a non-POD type and its
737 // default constructor (if any), copy constructor, move constructor,
738 // copy assignment operator, move assignment operator, and destructor are
740 setHasObjectMember(true);
741 struct DefinitionData &Data = data();
742 Data.PlainOldData = false;
743 Data.HasTrivialSpecialMembers = 0;
744 Data.HasIrrelevantDestructor = false;
745 } else if (!Context.getLangOpts().ObjCAutoRefCount) {
746 setHasObjectMember(true);
748 } else if (!T.isCXX98PODType(Context))
749 data().PlainOldData = false;
751 if (T->isReferenceType()) {
752 if (!Field->hasInClassInitializer())
753 data().HasUninitializedReferenceMember = true;
756 // A standard-layout class is a class that:
757 // -- has no non-static data members of type [...] reference,
758 data().IsStandardLayout = false;
761 if (!Field->hasInClassInitializer() && !Field->isMutable()) {
762 if (CXXRecordDecl *FieldType = T->getAsCXXRecordDecl()) {
763 if (FieldType->hasDefinition() && !FieldType->allowConstDefaultInit())
764 data().HasUninitializedFields = true;
766 data().HasUninitializedFields = true;
770 // Record if this field is the first non-literal or volatile field or base.
771 if (!T->isLiteralType(Context) || T.isVolatileQualified())
772 data().HasNonLiteralTypeFieldsOrBases = true;
774 if (Field->hasInClassInitializer() ||
775 (Field->isAnonymousStructOrUnion() &&
776 Field->getType()->getAsCXXRecordDecl()->hasInClassInitializer())) {
777 data().HasInClassInitializer = true;
780 // A default constructor is trivial if [...] no non-static data member
781 // of its class has a brace-or-equal-initializer.
782 data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor;
784 // C++11 [dcl.init.aggr]p1:
785 // An aggregate is a [...] class with [...] no
786 // brace-or-equal-initializers for non-static data members.
788 // This rule was removed in C++14.
789 if (!getASTContext().getLangOpts().CPlusPlus14)
790 data().Aggregate = false;
793 // A POD struct is [...] a trivial class.
794 data().PlainOldData = false;
797 // C++11 [class.copy]p23:
798 // A defaulted copy/move assignment operator for a class X is defined
799 // as deleted if X has:
800 // -- a non-static data member of reference type
801 if (T->isReferenceType())
802 data().DefaultedMoveAssignmentIsDeleted = true;
804 if (const RecordType *RecordTy = T->getAs<RecordType>()) {
805 CXXRecordDecl* FieldRec = cast<CXXRecordDecl>(RecordTy->getDecl());
806 if (FieldRec->getDefinition()) {
807 addedClassSubobject(FieldRec);
809 // We may need to perform overload resolution to determine whether a
810 // field can be moved if it's const or volatile qualified.
811 if (T.getCVRQualifiers() & (Qualifiers::Const | Qualifiers::Volatile)) {
812 data().NeedOverloadResolutionForMoveConstructor = true;
813 data().NeedOverloadResolutionForMoveAssignment = true;
816 // C++11 [class.ctor]p5, C++11 [class.copy]p11:
817 // A defaulted [special member] for a class X is defined as
819 // -- X is a union-like class that has a variant member with a
820 // non-trivial [corresponding special member]
822 if (FieldRec->hasNonTrivialMoveConstructor())
823 data().DefaultedMoveConstructorIsDeleted = true;
824 if (FieldRec->hasNonTrivialMoveAssignment())
825 data().DefaultedMoveAssignmentIsDeleted = true;
826 if (FieldRec->hasNonTrivialDestructor())
827 data().DefaultedDestructorIsDeleted = true;
830 // For an anonymous union member, our overload resolution will perform
831 // overload resolution for its members.
832 if (Field->isAnonymousStructOrUnion()) {
833 data().NeedOverloadResolutionForMoveConstructor |=
834 FieldRec->data().NeedOverloadResolutionForMoveConstructor;
835 data().NeedOverloadResolutionForMoveAssignment |=
836 FieldRec->data().NeedOverloadResolutionForMoveAssignment;
837 data().NeedOverloadResolutionForDestructor |=
838 FieldRec->data().NeedOverloadResolutionForDestructor;
841 // C++0x [class.ctor]p5:
842 // A default constructor is trivial [...] if:
843 // -- for all the non-static data members of its class that are of
844 // class type (or array thereof), each such class has a trivial
845 // default constructor.
846 if (!FieldRec->hasTrivialDefaultConstructor())
847 data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor;
849 // C++0x [class.copy]p13:
850 // A copy/move constructor for class X is trivial if [...]
852 // -- for each non-static data member of X that is of class type (or
853 // an array thereof), the constructor selected to copy/move that
854 // member is trivial;
855 if (!FieldRec->hasTrivialCopyConstructor())
856 data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor;
857 // If the field doesn't have a simple move constructor, we'll eagerly
858 // declare the move constructor for this class and we'll decide whether
859 // it's trivial then.
860 if (!FieldRec->hasTrivialMoveConstructor())
861 data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor;
863 // C++0x [class.copy]p27:
864 // A copy/move assignment operator for class X is trivial if [...]
866 // -- for each non-static data member of X that is of class type (or
867 // an array thereof), the assignment operator selected to
868 // copy/move that member is trivial;
869 if (!FieldRec->hasTrivialCopyAssignment())
870 data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment;
871 // If the field doesn't have a simple move assignment, we'll eagerly
872 // declare the move assignment for this class and we'll decide whether
873 // it's trivial then.
874 if (!FieldRec->hasTrivialMoveAssignment())
875 data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment;
877 if (!FieldRec->hasTrivialDestructor())
878 data().HasTrivialSpecialMembers &= ~SMF_Destructor;
879 if (!FieldRec->hasIrrelevantDestructor())
880 data().HasIrrelevantDestructor = false;
881 if (FieldRec->hasObjectMember())
882 setHasObjectMember(true);
883 if (FieldRec->hasVolatileMember())
884 setHasVolatileMember(true);
887 // A standard-layout class is a class that:
888 // -- has no non-static data members of type non-standard-layout
889 // class (or array of such types) [...]
890 if (!FieldRec->isStandardLayout())
891 data().IsStandardLayout = false;
894 // A standard-layout class is a class that:
896 // -- has no base classes of the same type as the first non-static
898 // We don't want to expend bits in the state of the record decl
899 // tracking whether this is the first non-static data member so we
900 // cheat a bit and use some of the existing state: the empty bit.
901 // Virtual bases and virtual methods make a class non-empty, but they
902 // also make it non-standard-layout so we needn't check here.
903 // A non-empty base class may leave the class standard-layout, but not
904 // if we have arrived here, and have at least one non-static data
905 // member. If IsStandardLayout remains true, then the first non-static
906 // data member must come through here with Empty still true, and Empty
907 // will subsequently be set to false below.
908 if (data().IsStandardLayout && data().Empty) {
909 for (const auto &BI : bases()) {
910 if (Context.hasSameUnqualifiedType(BI.getType(), T)) {
911 data().IsStandardLayout = false;
917 // Keep track of the presence of mutable fields.
918 if (FieldRec->hasMutableFields())
919 data().HasMutableFields = true;
921 // C++11 [class.copy]p13:
922 // If the implicitly-defined constructor would satisfy the
923 // requirements of a constexpr constructor, the implicitly-defined
924 // constructor is constexpr.
925 // C++11 [dcl.constexpr]p4:
926 // -- every constructor involved in initializing non-static data
927 // members [...] shall be a constexpr constructor
928 if (!Field->hasInClassInitializer() &&
929 !FieldRec->hasConstexprDefaultConstructor() && !isUnion())
930 // The standard requires any in-class initializer to be a constant
931 // expression. We consider this to be a defect.
932 data().DefaultedDefaultConstructorIsConstexpr = false;
934 // C++11 [class.copy]p8:
935 // The implicitly-declared copy constructor for a class X will have
936 // the form 'X::X(const X&)' if each potentially constructed subobject
937 // of a class type M (or array thereof) has a copy constructor whose
938 // first parameter is of type 'const M&' or 'const volatile M&'.
939 if (!FieldRec->hasCopyConstructorWithConstParam())
940 data().ImplicitCopyConstructorCanHaveConstParamForNonVBase = false;
942 // C++11 [class.copy]p18:
943 // The implicitly-declared copy assignment oeprator for a class X will
944 // have the form 'X& X::operator=(const X&)' if [...] for all the
945 // non-static data members of X that are of a class type M (or array
946 // thereof), each such class type has a copy assignment operator whose
947 // parameter is of type 'const M&', 'const volatile M&' or 'M'.
948 if (!FieldRec->hasCopyAssignmentWithConstParam())
949 data().ImplicitCopyAssignmentHasConstParam = false;
951 if (FieldRec->hasUninitializedReferenceMember() &&
952 !Field->hasInClassInitializer())
953 data().HasUninitializedReferenceMember = true;
955 // C++11 [class.union]p8, DR1460:
956 // a non-static data member of an anonymous union that is a member of
957 // X is also a variant member of X.
958 if (FieldRec->hasVariantMembers() &&
959 Field->isAnonymousStructOrUnion())
960 data().HasVariantMembers = true;
963 // Base element type of field is a non-class type.
964 if (!T->isLiteralType(Context) ||
965 (!Field->hasInClassInitializer() && !isUnion()))
966 data().DefaultedDefaultConstructorIsConstexpr = false;
968 // C++11 [class.copy]p23:
969 // A defaulted copy/move assignment operator for a class X is defined
970 // as deleted if X has:
971 // -- a non-static data member of const non-class type (or array
973 if (T.isConstQualified())
974 data().DefaultedMoveAssignmentIsDeleted = true;
978 // A standard-layout class is a class that:
980 // -- either has no non-static data members in the most derived
981 // class and at most one base class with non-static data members,
982 // or has no base classes with non-static data members, and
983 // At this point we know that we have a non-static data member, so the last
985 if (!data().HasNoNonEmptyBases)
986 data().IsStandardLayout = false;
988 // C++14 [meta.unary.prop]p4:
989 // T is a class type [...] with [...] no non-static data members other
990 // than bit-fields of length 0...
992 if (!Field->isBitField() ||
993 (!Field->getBitWidth()->isTypeDependent() &&
994 !Field->getBitWidth()->isValueDependent() &&
995 Field->getBitWidthValue(Context) != 0))
996 data().Empty = false;
1000 // Handle using declarations of conversion functions.
1001 if (UsingShadowDecl *Shadow = dyn_cast<UsingShadowDecl>(D)) {
1002 if (Shadow->getDeclName().getNameKind()
1003 == DeclarationName::CXXConversionFunctionName) {
1004 ASTContext &Ctx = getASTContext();
1005 data().Conversions.get(Ctx).addDecl(Ctx, Shadow, Shadow->getAccess());
1009 if (UsingDecl *Using = dyn_cast<UsingDecl>(D)) {
1010 if (Using->getDeclName().getNameKind() ==
1011 DeclarationName::CXXConstructorName) {
1012 data().HasInheritedConstructor = true;
1013 // C++1z [dcl.init.aggr]p1:
1014 // An aggregate is [...] a class [...] with no inherited constructors
1015 data().Aggregate = false;
1018 if (Using->getDeclName().getCXXOverloadedOperator() == OO_Equal)
1019 data().HasInheritedAssignment = true;
1023 void CXXRecordDecl::finishedDefaultedOrDeletedMember(CXXMethodDecl *D) {
1024 assert(!D->isImplicit() && !D->isUserProvided());
1026 // The kind of special member this declaration is, if any.
1027 unsigned SMKind = 0;
1029 if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) {
1030 if (Constructor->isDefaultConstructor()) {
1031 SMKind |= SMF_DefaultConstructor;
1032 if (Constructor->isConstexpr())
1033 data().HasConstexprDefaultConstructor = true;
1035 if (Constructor->isCopyConstructor())
1036 SMKind |= SMF_CopyConstructor;
1037 else if (Constructor->isMoveConstructor())
1038 SMKind |= SMF_MoveConstructor;
1039 else if (Constructor->isConstexpr())
1040 // We may now know that the constructor is constexpr.
1041 data().HasConstexprNonCopyMoveConstructor = true;
1042 } else if (isa<CXXDestructorDecl>(D)) {
1043 SMKind |= SMF_Destructor;
1044 if (!D->isTrivial() || D->getAccess() != AS_public || D->isDeleted())
1045 data().HasIrrelevantDestructor = false;
1046 } else if (D->isCopyAssignmentOperator())
1047 SMKind |= SMF_CopyAssignment;
1048 else if (D->isMoveAssignmentOperator())
1049 SMKind |= SMF_MoveAssignment;
1051 // Update which trivial / non-trivial special members we have.
1052 // addedMember will have skipped this step for this member.
1054 data().HasTrivialSpecialMembers |= SMKind;
1056 data().DeclaredNonTrivialSpecialMembers |= SMKind;
1059 bool CXXRecordDecl::isCLike() const {
1060 if (getTagKind() == TTK_Class || getTagKind() == TTK_Interface ||
1061 !TemplateOrInstantiation.isNull())
1063 if (!hasDefinition())
1066 return isPOD() && data().HasOnlyCMembers;
1069 bool CXXRecordDecl::isGenericLambda() const {
1070 if (!isLambda()) return false;
1071 return getLambdaData().IsGenericLambda;
1074 CXXMethodDecl* CXXRecordDecl::getLambdaCallOperator() const {
1075 if (!isLambda()) return nullptr;
1076 DeclarationName Name =
1077 getASTContext().DeclarationNames.getCXXOperatorName(OO_Call);
1078 DeclContext::lookup_result Calls = lookup(Name);
1080 assert(!Calls.empty() && "Missing lambda call operator!");
1081 assert(Calls.size() == 1 && "More than one lambda call operator!");
1083 NamedDecl *CallOp = Calls.front();
1084 if (FunctionTemplateDecl *CallOpTmpl =
1085 dyn_cast<FunctionTemplateDecl>(CallOp))
1086 return cast<CXXMethodDecl>(CallOpTmpl->getTemplatedDecl());
1088 return cast<CXXMethodDecl>(CallOp);
1091 CXXMethodDecl* CXXRecordDecl::getLambdaStaticInvoker() const {
1092 if (!isLambda()) return nullptr;
1093 DeclarationName Name =
1094 &getASTContext().Idents.get(getLambdaStaticInvokerName());
1095 DeclContext::lookup_result Invoker = lookup(Name);
1096 if (Invoker.empty()) return nullptr;
1097 assert(Invoker.size() == 1 && "More than one static invoker operator!");
1098 NamedDecl *InvokerFun = Invoker.front();
1099 if (FunctionTemplateDecl *InvokerTemplate =
1100 dyn_cast<FunctionTemplateDecl>(InvokerFun))
1101 return cast<CXXMethodDecl>(InvokerTemplate->getTemplatedDecl());
1103 return cast<CXXMethodDecl>(InvokerFun);
1106 void CXXRecordDecl::getCaptureFields(
1107 llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures,
1108 FieldDecl *&ThisCapture) const {
1110 ThisCapture = nullptr;
1112 LambdaDefinitionData &Lambda = getLambdaData();
1113 RecordDecl::field_iterator Field = field_begin();
1114 for (const LambdaCapture *C = Lambda.Captures, *CEnd = C + Lambda.NumCaptures;
1115 C != CEnd; ++C, ++Field) {
1116 if (C->capturesThis())
1117 ThisCapture = *Field;
1118 else if (C->capturesVariable())
1119 Captures[C->getCapturedVar()] = *Field;
1121 assert(Field == field_end());
1124 TemplateParameterList *
1125 CXXRecordDecl::getGenericLambdaTemplateParameterList() const {
1126 if (!isLambda()) return nullptr;
1127 CXXMethodDecl *CallOp = getLambdaCallOperator();
1128 if (FunctionTemplateDecl *Tmpl = CallOp->getDescribedFunctionTemplate())
1129 return Tmpl->getTemplateParameters();
1133 Decl *CXXRecordDecl::getLambdaContextDecl() const {
1134 assert(isLambda() && "Not a lambda closure type!");
1135 ExternalASTSource *Source = getParentASTContext().getExternalSource();
1136 return getLambdaData().ContextDecl.get(Source);
1139 static CanQualType GetConversionType(ASTContext &Context, NamedDecl *Conv) {
1141 cast<CXXConversionDecl>(Conv->getUnderlyingDecl()->getAsFunction())
1142 ->getConversionType();
1143 return Context.getCanonicalType(T);
1146 /// Collect the visible conversions of a base class.
1148 /// \param Record a base class of the class we're considering
1149 /// \param InVirtual whether this base class is a virtual base (or a base
1150 /// of a virtual base)
1151 /// \param Access the access along the inheritance path to this base
1152 /// \param ParentHiddenTypes the conversions provided by the inheritors
1154 /// \param Output the set to which to add conversions from non-virtual bases
1155 /// \param VOutput the set to which to add conversions from virtual bases
1156 /// \param HiddenVBaseCs the set of conversions which were hidden in a
1157 /// virtual base along some inheritance path
1158 static void CollectVisibleConversions(ASTContext &Context,
1159 CXXRecordDecl *Record,
1161 AccessSpecifier Access,
1162 const llvm::SmallPtrSet<CanQualType, 8> &ParentHiddenTypes,
1163 ASTUnresolvedSet &Output,
1164 UnresolvedSetImpl &VOutput,
1165 llvm::SmallPtrSet<NamedDecl*, 8> &HiddenVBaseCs) {
1166 // The set of types which have conversions in this class or its
1167 // subclasses. As an optimization, we don't copy the derived set
1168 // unless it might change.
1169 const llvm::SmallPtrSet<CanQualType, 8> *HiddenTypes = &ParentHiddenTypes;
1170 llvm::SmallPtrSet<CanQualType, 8> HiddenTypesBuffer;
1172 // Collect the direct conversions and figure out which conversions
1173 // will be hidden in the subclasses.
1174 CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin();
1175 CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end();
1176 if (ConvI != ConvE) {
1177 HiddenTypesBuffer = ParentHiddenTypes;
1178 HiddenTypes = &HiddenTypesBuffer;
1180 for (CXXRecordDecl::conversion_iterator I = ConvI; I != ConvE; ++I) {
1181 CanQualType ConvType(GetConversionType(Context, I.getDecl()));
1182 bool Hidden = ParentHiddenTypes.count(ConvType);
1184 HiddenTypesBuffer.insert(ConvType);
1186 // If this conversion is hidden and we're in a virtual base,
1187 // remember that it's hidden along some inheritance path.
1188 if (Hidden && InVirtual)
1189 HiddenVBaseCs.insert(cast<NamedDecl>(I.getDecl()->getCanonicalDecl()));
1191 // If this conversion isn't hidden, add it to the appropriate output.
1193 AccessSpecifier IAccess
1194 = CXXRecordDecl::MergeAccess(Access, I.getAccess());
1197 VOutput.addDecl(I.getDecl(), IAccess);
1199 Output.addDecl(Context, I.getDecl(), IAccess);
1204 // Collect information recursively from any base classes.
1205 for (const auto &I : Record->bases()) {
1206 const RecordType *RT = I.getType()->getAs<RecordType>();
1209 AccessSpecifier BaseAccess
1210 = CXXRecordDecl::MergeAccess(Access, I.getAccessSpecifier());
1211 bool BaseInVirtual = InVirtual || I.isVirtual();
1213 CXXRecordDecl *Base = cast<CXXRecordDecl>(RT->getDecl());
1214 CollectVisibleConversions(Context, Base, BaseInVirtual, BaseAccess,
1215 *HiddenTypes, Output, VOutput, HiddenVBaseCs);
1219 /// Collect the visible conversions of a class.
1221 /// This would be extremely straightforward if it weren't for virtual
1222 /// bases. It might be worth special-casing that, really.
1223 static void CollectVisibleConversions(ASTContext &Context,
1224 CXXRecordDecl *Record,
1225 ASTUnresolvedSet &Output) {
1226 // The collection of all conversions in virtual bases that we've
1227 // found. These will be added to the output as long as they don't
1228 // appear in the hidden-conversions set.
1229 UnresolvedSet<8> VBaseCs;
1231 // The set of conversions in virtual bases that we've determined to
1233 llvm::SmallPtrSet<NamedDecl*, 8> HiddenVBaseCs;
1235 // The set of types hidden by classes derived from this one.
1236 llvm::SmallPtrSet<CanQualType, 8> HiddenTypes;
1238 // Go ahead and collect the direct conversions and add them to the
1239 // hidden-types set.
1240 CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin();
1241 CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end();
1242 Output.append(Context, ConvI, ConvE);
1243 for (; ConvI != ConvE; ++ConvI)
1244 HiddenTypes.insert(GetConversionType(Context, ConvI.getDecl()));
1246 // Recursively collect conversions from base classes.
1247 for (const auto &I : Record->bases()) {
1248 const RecordType *RT = I.getType()->getAs<RecordType>();
1251 CollectVisibleConversions(Context, cast<CXXRecordDecl>(RT->getDecl()),
1252 I.isVirtual(), I.getAccessSpecifier(),
1253 HiddenTypes, Output, VBaseCs, HiddenVBaseCs);
1256 // Add any unhidden conversions provided by virtual bases.
1257 for (UnresolvedSetIterator I = VBaseCs.begin(), E = VBaseCs.end();
1259 if (!HiddenVBaseCs.count(cast<NamedDecl>(I.getDecl()->getCanonicalDecl())))
1260 Output.addDecl(Context, I.getDecl(), I.getAccess());
1264 /// getVisibleConversionFunctions - get all conversion functions visible
1265 /// in current class; including conversion function templates.
1266 llvm::iterator_range<CXXRecordDecl::conversion_iterator>
1267 CXXRecordDecl::getVisibleConversionFunctions() {
1268 ASTContext &Ctx = getASTContext();
1270 ASTUnresolvedSet *Set;
1271 if (bases_begin() == bases_end()) {
1272 // If root class, all conversions are visible.
1273 Set = &data().Conversions.get(Ctx);
1275 Set = &data().VisibleConversions.get(Ctx);
1276 // If visible conversion list is not evaluated, evaluate it.
1277 if (!data().ComputedVisibleConversions) {
1278 CollectVisibleConversions(Ctx, this, *Set);
1279 data().ComputedVisibleConversions = true;
1282 return llvm::make_range(Set->begin(), Set->end());
1285 void CXXRecordDecl::removeConversion(const NamedDecl *ConvDecl) {
1286 // This operation is O(N) but extremely rare. Sema only uses it to
1287 // remove UsingShadowDecls in a class that were followed by a direct
1288 // declaration, e.g.:
1290 // using B::operator int;
1293 // This is uncommon by itself and even more uncommon in conjunction
1294 // with sufficiently large numbers of directly-declared conversions
1295 // that asymptotic behavior matters.
1297 ASTUnresolvedSet &Convs = data().Conversions.get(getASTContext());
1298 for (unsigned I = 0, E = Convs.size(); I != E; ++I) {
1299 if (Convs[I].getDecl() == ConvDecl) {
1301 assert(std::find(Convs.begin(), Convs.end(), ConvDecl) == Convs.end()
1302 && "conversion was found multiple times in unresolved set");
1307 llvm_unreachable("conversion not found in set!");
1310 CXXRecordDecl *CXXRecordDecl::getInstantiatedFromMemberClass() const {
1311 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
1312 return cast<CXXRecordDecl>(MSInfo->getInstantiatedFrom());
1317 MemberSpecializationInfo *CXXRecordDecl::getMemberSpecializationInfo() const {
1318 return TemplateOrInstantiation.dyn_cast<MemberSpecializationInfo *>();
1322 CXXRecordDecl::setInstantiationOfMemberClass(CXXRecordDecl *RD,
1323 TemplateSpecializationKind TSK) {
1324 assert(TemplateOrInstantiation.isNull() &&
1325 "Previous template or instantiation?");
1326 assert(!isa<ClassTemplatePartialSpecializationDecl>(this));
1327 TemplateOrInstantiation
1328 = new (getASTContext()) MemberSpecializationInfo(RD, TSK);
1331 ClassTemplateDecl *CXXRecordDecl::getDescribedClassTemplate() const {
1332 return TemplateOrInstantiation.dyn_cast<ClassTemplateDecl *>();
1335 void CXXRecordDecl::setDescribedClassTemplate(ClassTemplateDecl *Template) {
1336 TemplateOrInstantiation = Template;
1339 TemplateSpecializationKind CXXRecordDecl::getTemplateSpecializationKind() const{
1340 if (const ClassTemplateSpecializationDecl *Spec
1341 = dyn_cast<ClassTemplateSpecializationDecl>(this))
1342 return Spec->getSpecializationKind();
1344 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
1345 return MSInfo->getTemplateSpecializationKind();
1347 return TSK_Undeclared;
1351 CXXRecordDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK) {
1352 if (ClassTemplateSpecializationDecl *Spec
1353 = dyn_cast<ClassTemplateSpecializationDecl>(this)) {
1354 Spec->setSpecializationKind(TSK);
1358 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) {
1359 MSInfo->setTemplateSpecializationKind(TSK);
1363 llvm_unreachable("Not a class template or member class specialization");
1366 const CXXRecordDecl *CXXRecordDecl::getTemplateInstantiationPattern() const {
1367 auto GetDefinitionOrSelf =
1368 [](const CXXRecordDecl *D) -> const CXXRecordDecl * {
1369 if (auto *Def = D->getDefinition())
1374 // If it's a class template specialization, find the template or partial
1375 // specialization from which it was instantiated.
1376 if (auto *TD = dyn_cast<ClassTemplateSpecializationDecl>(this)) {
1377 auto From = TD->getInstantiatedFrom();
1378 if (auto *CTD = From.dyn_cast<ClassTemplateDecl *>()) {
1379 while (auto *NewCTD = CTD->getInstantiatedFromMemberTemplate()) {
1380 if (NewCTD->isMemberSpecialization())
1384 return GetDefinitionOrSelf(CTD->getTemplatedDecl());
1387 From.dyn_cast<ClassTemplatePartialSpecializationDecl *>()) {
1388 while (auto *NewCTPSD = CTPSD->getInstantiatedFromMember()) {
1389 if (NewCTPSD->isMemberSpecialization())
1393 return GetDefinitionOrSelf(CTPSD);
1397 if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) {
1398 if (isTemplateInstantiation(MSInfo->getTemplateSpecializationKind())) {
1399 const CXXRecordDecl *RD = this;
1400 while (auto *NewRD = RD->getInstantiatedFromMemberClass())
1402 return GetDefinitionOrSelf(RD);
1406 assert(!isTemplateInstantiation(this->getTemplateSpecializationKind()) &&
1407 "couldn't find pattern for class template instantiation");
1411 CXXDestructorDecl *CXXRecordDecl::getDestructor() const {
1412 ASTContext &Context = getASTContext();
1413 QualType ClassType = Context.getTypeDeclType(this);
1415 DeclarationName Name
1416 = Context.DeclarationNames.getCXXDestructorName(
1417 Context.getCanonicalType(ClassType));
1419 DeclContext::lookup_result R = lookup(Name);
1421 return R.empty() ? nullptr : dyn_cast<CXXDestructorDecl>(R.front());
1424 bool CXXRecordDecl::isAnyDestructorNoReturn() const {
1425 // Destructor is noreturn.
1426 if (const CXXDestructorDecl *Destructor = getDestructor())
1427 if (Destructor->isNoReturn())
1430 // Check base classes destructor for noreturn.
1431 for (const auto &Base : bases())
1432 if (const CXXRecordDecl *RD = Base.getType()->getAsCXXRecordDecl())
1433 if (RD->isAnyDestructorNoReturn())
1436 // Check fields for noreturn.
1437 for (const auto *Field : fields())
1438 if (const CXXRecordDecl *RD =
1439 Field->getType()->getBaseElementTypeUnsafe()->getAsCXXRecordDecl())
1440 if (RD->isAnyDestructorNoReturn())
1443 // All destructors are not noreturn.
1447 void CXXRecordDecl::completeDefinition() {
1448 completeDefinition(nullptr);
1451 void CXXRecordDecl::completeDefinition(CXXFinalOverriderMap *FinalOverriders) {
1452 RecordDecl::completeDefinition();
1454 // If the class may be abstract (but hasn't been marked as such), check for
1455 // any pure final overriders.
1456 if (mayBeAbstract()) {
1457 CXXFinalOverriderMap MyFinalOverriders;
1458 if (!FinalOverriders) {
1459 getFinalOverriders(MyFinalOverriders);
1460 FinalOverriders = &MyFinalOverriders;
1464 for (CXXFinalOverriderMap::iterator M = FinalOverriders->begin(),
1465 MEnd = FinalOverriders->end();
1466 M != MEnd && !Done; ++M) {
1467 for (OverridingMethods::iterator SO = M->second.begin(),
1468 SOEnd = M->second.end();
1469 SO != SOEnd && !Done; ++SO) {
1470 assert(SO->second.size() > 0 &&
1471 "All virtual functions have overridding virtual functions");
1473 // C++ [class.abstract]p4:
1474 // A class is abstract if it contains or inherits at least one
1475 // pure virtual function for which the final overrider is pure
1477 if (SO->second.front().Method->isPure()) {
1478 data().Abstract = true;
1486 // Set access bits correctly on the directly-declared conversions.
1487 for (conversion_iterator I = conversion_begin(), E = conversion_end();
1489 I.setAccess((*I)->getAccess());
1492 bool CXXRecordDecl::mayBeAbstract() const {
1493 if (data().Abstract || isInvalidDecl() || !data().Polymorphic ||
1494 isDependentContext())
1497 for (const auto &B : bases()) {
1498 CXXRecordDecl *BaseDecl
1499 = cast<CXXRecordDecl>(B.getType()->getAs<RecordType>()->getDecl());
1500 if (BaseDecl->isAbstract())
1507 void CXXDeductionGuideDecl::anchor() { }
1509 CXXDeductionGuideDecl *CXXDeductionGuideDecl::Create(
1510 ASTContext &C, DeclContext *DC, SourceLocation StartLoc, bool IsExplicit,
1511 const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo,
1512 SourceLocation EndLocation) {
1513 return new (C, DC) CXXDeductionGuideDecl(C, DC, StartLoc, IsExplicit,
1514 NameInfo, T, TInfo, EndLocation);
1517 CXXDeductionGuideDecl *CXXDeductionGuideDecl::CreateDeserialized(ASTContext &C,
1519 return new (C, ID) CXXDeductionGuideDecl(C, nullptr, SourceLocation(), false,
1520 DeclarationNameInfo(), QualType(),
1521 nullptr, SourceLocation());
1524 void CXXMethodDecl::anchor() { }
1526 bool CXXMethodDecl::isStatic() const {
1527 const CXXMethodDecl *MD = getCanonicalDecl();
1529 if (MD->getStorageClass() == SC_Static)
1532 OverloadedOperatorKind OOK = getDeclName().getCXXOverloadedOperator();
1533 return isStaticOverloadedOperator(OOK);
1536 static bool recursivelyOverrides(const CXXMethodDecl *DerivedMD,
1537 const CXXMethodDecl *BaseMD) {
1538 for (CXXMethodDecl::method_iterator I = DerivedMD->begin_overridden_methods(),
1539 E = DerivedMD->end_overridden_methods(); I != E; ++I) {
1540 const CXXMethodDecl *MD = *I;
1541 if (MD->getCanonicalDecl() == BaseMD->getCanonicalDecl())
1543 if (recursivelyOverrides(MD, BaseMD))
1550 CXXMethodDecl::getCorrespondingMethodInClass(const CXXRecordDecl *RD,
1552 if (this->getParent()->getCanonicalDecl() == RD->getCanonicalDecl())
1555 // Lookup doesn't work for destructors, so handle them separately.
1556 if (isa<CXXDestructorDecl>(this)) {
1557 CXXMethodDecl *MD = RD->getDestructor();
1559 if (recursivelyOverrides(MD, this))
1561 if (MayBeBase && recursivelyOverrides(this, MD))
1567 for (auto *ND : RD->lookup(getDeclName())) {
1568 CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(ND);
1571 if (recursivelyOverrides(MD, this))
1573 if (MayBeBase && recursivelyOverrides(this, MD))
1577 for (const auto &I : RD->bases()) {
1578 const RecordType *RT = I.getType()->getAs<RecordType>();
1581 const CXXRecordDecl *Base = cast<CXXRecordDecl>(RT->getDecl());
1582 CXXMethodDecl *T = this->getCorrespondingMethodInClass(Base);
1591 CXXMethodDecl::Create(ASTContext &C, CXXRecordDecl *RD,
1592 SourceLocation StartLoc,
1593 const DeclarationNameInfo &NameInfo,
1594 QualType T, TypeSourceInfo *TInfo,
1595 StorageClass SC, bool isInline,
1596 bool isConstexpr, SourceLocation EndLocation) {
1597 return new (C, RD) CXXMethodDecl(CXXMethod, C, RD, StartLoc, NameInfo,
1598 T, TInfo, SC, isInline, isConstexpr,
1602 CXXMethodDecl *CXXMethodDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
1603 return new (C, ID) CXXMethodDecl(CXXMethod, C, nullptr, SourceLocation(),
1604 DeclarationNameInfo(), QualType(), nullptr,
1605 SC_None, false, false, SourceLocation());
1608 CXXMethodDecl *CXXMethodDecl::getDevirtualizedMethod(const Expr *Base,
1610 assert(isVirtual() && "this method is expected to be virtual");
1612 // When building with -fapple-kext, all calls must go through the vtable since
1613 // the kernel linker can do runtime patching of vtables.
1617 // If the member function is marked 'final', we know that it can't be
1618 // overridden and can therefore devirtualize it unless it's pure virtual.
1619 if (hasAttr<FinalAttr>())
1620 return isPure() ? nullptr : this;
1622 // If Base is unknown, we cannot devirtualize.
1626 // If the base expression (after skipping derived-to-base conversions) is a
1627 // class prvalue, then we can devirtualize.
1628 Base = Base->getBestDynamicClassTypeExpr();
1629 if (Base->isRValue() && Base->getType()->isRecordType())
1632 // If we don't even know what we would call, we can't devirtualize.
1633 const CXXRecordDecl *BestDynamicDecl = Base->getBestDynamicClassType();
1634 if (!BestDynamicDecl)
1637 // There may be a method corresponding to MD in a derived class.
1638 CXXMethodDecl *DevirtualizedMethod =
1639 getCorrespondingMethodInClass(BestDynamicDecl);
1641 // If that method is pure virtual, we can't devirtualize. If this code is
1642 // reached, the result would be UB, not a direct call to the derived class
1643 // function, and we can't assume the derived class function is defined.
1644 if (DevirtualizedMethod->isPure())
1647 // If that method is marked final, we can devirtualize it.
1648 if (DevirtualizedMethod->hasAttr<FinalAttr>())
1649 return DevirtualizedMethod;
1651 // Similarly, if the class itself is marked 'final' it can't be overridden
1652 // and we can therefore devirtualize the member function call.
1653 if (BestDynamicDecl->hasAttr<FinalAttr>())
1654 return DevirtualizedMethod;
1656 if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Base)) {
1657 if (const VarDecl *VD = dyn_cast<VarDecl>(DRE->getDecl()))
1658 if (VD->getType()->isRecordType())
1659 // This is a record decl. We know the type and can devirtualize it.
1660 return DevirtualizedMethod;
1665 // We can devirtualize calls on an object accessed by a class member access
1666 // expression, since by C++11 [basic.life]p6 we know that it can't refer to
1667 // a derived class object constructed in the same location.
1668 if (const MemberExpr *ME = dyn_cast<MemberExpr>(Base))
1669 if (const ValueDecl *VD = dyn_cast<ValueDecl>(ME->getMemberDecl()))
1670 return VD->getType()->isRecordType() ? DevirtualizedMethod : nullptr;
1672 // Likewise for calls on an object accessed by a (non-reference) pointer to
1674 if (auto *BO = dyn_cast<BinaryOperator>(Base)) {
1675 if (BO->isPtrMemOp()) {
1676 auto *MPT = BO->getRHS()->getType()->castAs<MemberPointerType>();
1677 if (MPT->getPointeeType()->isRecordType())
1678 return DevirtualizedMethod;
1682 // We can't devirtualize the call.
1686 bool CXXMethodDecl::isUsualDeallocationFunction() const {
1687 if (getOverloadedOperator() != OO_Delete &&
1688 getOverloadedOperator() != OO_Array_Delete)
1691 // C++ [basic.stc.dynamic.deallocation]p2:
1692 // A template instance is never a usual deallocation function,
1693 // regardless of its signature.
1694 if (getPrimaryTemplate())
1697 // C++ [basic.stc.dynamic.deallocation]p2:
1698 // If a class T has a member deallocation function named operator delete
1699 // with exactly one parameter, then that function is a usual (non-placement)
1700 // deallocation function. [...]
1701 if (getNumParams() == 1)
1703 unsigned UsualParams = 1;
1705 // C++ <=14 [basic.stc.dynamic.deallocation]p2:
1706 // [...] If class T does not declare such an operator delete but does
1707 // declare a member deallocation function named operator delete with
1708 // exactly two parameters, the second of which has type std::size_t (18.1),
1709 // then this function is a usual deallocation function.
1711 // C++17 says a usual deallocation function is one with the signature
1712 // (void* [, size_t] [, std::align_val_t] [, ...])
1713 // and all such functions are usual deallocation functions. It's not clear
1714 // that allowing varargs functions was intentional.
1715 ASTContext &Context = getASTContext();
1716 if (UsualParams < getNumParams() &&
1717 Context.hasSameUnqualifiedType(getParamDecl(UsualParams)->getType(),
1718 Context.getSizeType()))
1721 if (UsualParams < getNumParams() &&
1722 getParamDecl(UsualParams)->getType()->isAlignValT())
1725 if (UsualParams != getNumParams())
1728 // In C++17 onwards, all potential usual deallocation functions are actual
1729 // usual deallocation functions.
1730 if (Context.getLangOpts().AlignedAllocation)
1733 // This function is a usual deallocation function if there are no
1734 // single-parameter deallocation functions of the same kind.
1735 DeclContext::lookup_result R = getDeclContext()->lookup(getDeclName());
1736 for (DeclContext::lookup_result::iterator I = R.begin(), E = R.end();
1738 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*I))
1739 if (FD->getNumParams() == 1)
1746 bool CXXMethodDecl::isCopyAssignmentOperator() const {
1747 // C++0x [class.copy]p17:
1748 // A user-declared copy assignment operator X::operator= is a non-static
1749 // non-template member function of class X with exactly one parameter of
1750 // type X, X&, const X&, volatile X& or const volatile X&.
1751 if (/*operator=*/getOverloadedOperator() != OO_Equal ||
1752 /*non-static*/ isStatic() ||
1753 /*non-template*/getPrimaryTemplate() || getDescribedFunctionTemplate() ||
1754 getNumParams() != 1)
1757 QualType ParamType = getParamDecl(0)->getType();
1758 if (const LValueReferenceType *Ref = ParamType->getAs<LValueReferenceType>())
1759 ParamType = Ref->getPointeeType();
1761 ASTContext &Context = getASTContext();
1763 = Context.getCanonicalType(Context.getTypeDeclType(getParent()));
1764 return Context.hasSameUnqualifiedType(ClassType, ParamType);
1767 bool CXXMethodDecl::isMoveAssignmentOperator() const {
1768 // C++0x [class.copy]p19:
1769 // A user-declared move assignment operator X::operator= is a non-static
1770 // non-template member function of class X with exactly one parameter of type
1771 // X&&, const X&&, volatile X&&, or const volatile X&&.
1772 if (getOverloadedOperator() != OO_Equal || isStatic() ||
1773 getPrimaryTemplate() || getDescribedFunctionTemplate() ||
1774 getNumParams() != 1)
1777 QualType ParamType = getParamDecl(0)->getType();
1778 if (!isa<RValueReferenceType>(ParamType))
1780 ParamType = ParamType->getPointeeType();
1782 ASTContext &Context = getASTContext();
1784 = Context.getCanonicalType(Context.getTypeDeclType(getParent()));
1785 return Context.hasSameUnqualifiedType(ClassType, ParamType);
1788 void CXXMethodDecl::addOverriddenMethod(const CXXMethodDecl *MD) {
1789 assert(MD->isCanonicalDecl() && "Method is not canonical!");
1790 assert(!MD->getParent()->isDependentContext() &&
1791 "Can't add an overridden method to a class template!");
1792 assert(MD->isVirtual() && "Method is not virtual!");
1794 getASTContext().addOverriddenMethod(this, MD);
1797 CXXMethodDecl::method_iterator CXXMethodDecl::begin_overridden_methods() const {
1798 if (isa<CXXConstructorDecl>(this)) return nullptr;
1799 return getASTContext().overridden_methods_begin(this);
1802 CXXMethodDecl::method_iterator CXXMethodDecl::end_overridden_methods() const {
1803 if (isa<CXXConstructorDecl>(this)) return nullptr;
1804 return getASTContext().overridden_methods_end(this);
1807 unsigned CXXMethodDecl::size_overridden_methods() const {
1808 if (isa<CXXConstructorDecl>(this)) return 0;
1809 return getASTContext().overridden_methods_size(this);
1812 CXXMethodDecl::overridden_method_range
1813 CXXMethodDecl::overridden_methods() const {
1814 if (isa<CXXConstructorDecl>(this))
1815 return overridden_method_range(nullptr, nullptr);
1816 return getASTContext().overridden_methods(this);
1819 QualType CXXMethodDecl::getThisType(ASTContext &C) const {
1820 // C++ 9.3.2p1: The type of this in a member function of a class X is X*.
1821 // If the member function is declared const, the type of this is const X*,
1822 // if the member function is declared volatile, the type of this is
1823 // volatile X*, and if the member function is declared const volatile,
1824 // the type of this is const volatile X*.
1826 assert(isInstance() && "No 'this' for static methods!");
1828 QualType ClassTy = C.getTypeDeclType(getParent());
1829 ClassTy = C.getQualifiedType(ClassTy,
1830 Qualifiers::fromCVRUMask(getTypeQualifiers()));
1831 return C.getPointerType(ClassTy);
1834 bool CXXMethodDecl::hasInlineBody() const {
1835 // If this function is a template instantiation, look at the template from
1836 // which it was instantiated.
1837 const FunctionDecl *CheckFn = getTemplateInstantiationPattern();
1841 const FunctionDecl *fn;
1842 return CheckFn->hasBody(fn) && !fn->isOutOfLine();
1845 bool CXXMethodDecl::isLambdaStaticInvoker() const {
1846 const CXXRecordDecl *P = getParent();
1847 if (P->isLambda()) {
1848 if (const CXXMethodDecl *StaticInvoker = P->getLambdaStaticInvoker()) {
1849 if (StaticInvoker == this) return true;
1850 if (P->isGenericLambda() && this->isFunctionTemplateSpecialization())
1851 return StaticInvoker == this->getPrimaryTemplate()->getTemplatedDecl();
1857 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
1858 TypeSourceInfo *TInfo, bool IsVirtual,
1859 SourceLocation L, Expr *Init,
1861 SourceLocation EllipsisLoc)
1862 : Initializee(TInfo), MemberOrEllipsisLocation(EllipsisLoc), Init(Init),
1863 LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(IsVirtual),
1864 IsWritten(false), SourceOrder(0)
1868 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
1870 SourceLocation MemberLoc,
1871 SourceLocation L, Expr *Init,
1873 : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init),
1874 LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false),
1875 IsWritten(false), SourceOrder(0)
1879 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
1880 IndirectFieldDecl *Member,
1881 SourceLocation MemberLoc,
1882 SourceLocation L, Expr *Init,
1884 : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init),
1885 LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false),
1886 IsWritten(false), SourceOrder(0)
1890 CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
1891 TypeSourceInfo *TInfo,
1892 SourceLocation L, Expr *Init,
1894 : Initializee(TInfo), MemberOrEllipsisLocation(), Init(Init),
1895 LParenLoc(L), RParenLoc(R), IsDelegating(true), IsVirtual(false),
1896 IsWritten(false), SourceOrder(0)
1900 TypeLoc CXXCtorInitializer::getBaseClassLoc() const {
1901 if (isBaseInitializer())
1902 return Initializee.get<TypeSourceInfo*>()->getTypeLoc();
1907 const Type *CXXCtorInitializer::getBaseClass() const {
1908 if (isBaseInitializer())
1909 return Initializee.get<TypeSourceInfo*>()->getType().getTypePtr();
1914 SourceLocation CXXCtorInitializer::getSourceLocation() const {
1915 if (isInClassMemberInitializer())
1916 return getAnyMember()->getLocation();
1918 if (isAnyMemberInitializer())
1919 return getMemberLocation();
1921 if (TypeSourceInfo *TSInfo = Initializee.get<TypeSourceInfo*>())
1922 return TSInfo->getTypeLoc().getLocalSourceRange().getBegin();
1924 return SourceLocation();
1927 SourceRange CXXCtorInitializer::getSourceRange() const {
1928 if (isInClassMemberInitializer()) {
1929 FieldDecl *D = getAnyMember();
1930 if (Expr *I = D->getInClassInitializer())
1931 return I->getSourceRange();
1932 return SourceRange();
1935 return SourceRange(getSourceLocation(), getRParenLoc());
1938 void CXXConstructorDecl::anchor() { }
1940 CXXConstructorDecl *CXXConstructorDecl::CreateDeserialized(ASTContext &C,
1943 unsigned Extra = additionalSizeToAlloc<InheritedConstructor>(Inherited);
1944 auto *Result = new (C, ID, Extra) CXXConstructorDecl(
1945 C, nullptr, SourceLocation(), DeclarationNameInfo(), QualType(), nullptr,
1946 false, false, false, false, InheritedConstructor());
1947 Result->IsInheritingConstructor = Inherited;
1951 CXXConstructorDecl *
1952 CXXConstructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
1953 SourceLocation StartLoc,
1954 const DeclarationNameInfo &NameInfo,
1955 QualType T, TypeSourceInfo *TInfo,
1956 bool isExplicit, bool isInline,
1957 bool isImplicitlyDeclared, bool isConstexpr,
1958 InheritedConstructor Inherited) {
1959 assert(NameInfo.getName().getNameKind()
1960 == DeclarationName::CXXConstructorName &&
1961 "Name must refer to a constructor");
1963 additionalSizeToAlloc<InheritedConstructor>(Inherited ? 1 : 0);
1964 return new (C, RD, Extra) CXXConstructorDecl(
1965 C, RD, StartLoc, NameInfo, T, TInfo, isExplicit, isInline,
1966 isImplicitlyDeclared, isConstexpr, Inherited);
1969 CXXConstructorDecl::init_const_iterator CXXConstructorDecl::init_begin() const {
1970 return CtorInitializers.get(getASTContext().getExternalSource());
1973 CXXConstructorDecl *CXXConstructorDecl::getTargetConstructor() const {
1974 assert(isDelegatingConstructor() && "Not a delegating constructor!");
1975 Expr *E = (*init_begin())->getInit()->IgnoreImplicit();
1976 if (CXXConstructExpr *Construct = dyn_cast<CXXConstructExpr>(E))
1977 return Construct->getConstructor();
1982 bool CXXConstructorDecl::isDefaultConstructor() const {
1983 // C++ [class.ctor]p5:
1984 // A default constructor for a class X is a constructor of class
1985 // X that can be called without an argument.
1986 return (getNumParams() == 0) ||
1987 (getNumParams() > 0 && getParamDecl(0)->hasDefaultArg());
1991 CXXConstructorDecl::isCopyConstructor(unsigned &TypeQuals) const {
1992 return isCopyOrMoveConstructor(TypeQuals) &&
1993 getParamDecl(0)->getType()->isLValueReferenceType();
1996 bool CXXConstructorDecl::isMoveConstructor(unsigned &TypeQuals) const {
1997 return isCopyOrMoveConstructor(TypeQuals) &&
1998 getParamDecl(0)->getType()->isRValueReferenceType();
2001 /// \brief Determine whether this is a copy or move constructor.
2002 bool CXXConstructorDecl::isCopyOrMoveConstructor(unsigned &TypeQuals) const {
2003 // C++ [class.copy]p2:
2004 // A non-template constructor for class X is a copy constructor
2005 // if its first parameter is of type X&, const X&, volatile X& or
2006 // const volatile X&, and either there are no other parameters
2007 // or else all other parameters have default arguments (8.3.6).
2008 // C++0x [class.copy]p3:
2009 // A non-template constructor for class X is a move constructor if its
2010 // first parameter is of type X&&, const X&&, volatile X&&, or
2011 // const volatile X&&, and either there are no other parameters or else
2012 // all other parameters have default arguments.
2013 if ((getNumParams() < 1) ||
2014 (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
2015 (getPrimaryTemplate() != nullptr) ||
2016 (getDescribedFunctionTemplate() != nullptr))
2019 const ParmVarDecl *Param = getParamDecl(0);
2021 // Do we have a reference type?
2022 const ReferenceType *ParamRefType = Param->getType()->getAs<ReferenceType>();
2026 // Is it a reference to our class type?
2027 ASTContext &Context = getASTContext();
2029 CanQualType PointeeType
2030 = Context.getCanonicalType(ParamRefType->getPointeeType());
2032 = Context.getCanonicalType(Context.getTagDeclType(getParent()));
2033 if (PointeeType.getUnqualifiedType() != ClassTy)
2036 // FIXME: other qualifiers?
2038 // We have a copy or move constructor.
2039 TypeQuals = PointeeType.getCVRQualifiers();
2043 bool CXXConstructorDecl::isConvertingConstructor(bool AllowExplicit) const {
2044 // C++ [class.conv.ctor]p1:
2045 // A constructor declared without the function-specifier explicit
2046 // that can be called with a single parameter specifies a
2047 // conversion from the type of its first parameter to the type of
2048 // its class. Such a constructor is called a converting
2050 if (isExplicit() && !AllowExplicit)
2053 return (getNumParams() == 0 &&
2054 getType()->getAs<FunctionProtoType>()->isVariadic()) ||
2055 (getNumParams() == 1) ||
2056 (getNumParams() > 1 &&
2057 (getParamDecl(1)->hasDefaultArg() ||
2058 getParamDecl(1)->isParameterPack()));
2061 bool CXXConstructorDecl::isSpecializationCopyingObject() const {
2062 if ((getNumParams() < 1) ||
2063 (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
2064 (getDescribedFunctionTemplate() != nullptr))
2067 const ParmVarDecl *Param = getParamDecl(0);
2069 ASTContext &Context = getASTContext();
2070 CanQualType ParamType = Context.getCanonicalType(Param->getType());
2072 // Is it the same as our our class type?
2074 = Context.getCanonicalType(Context.getTagDeclType(getParent()));
2075 if (ParamType.getUnqualifiedType() != ClassTy)
2081 void CXXDestructorDecl::anchor() { }
2084 CXXDestructorDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2086 CXXDestructorDecl(C, nullptr, SourceLocation(), DeclarationNameInfo(),
2087 QualType(), nullptr, false, false);
2091 CXXDestructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
2092 SourceLocation StartLoc,
2093 const DeclarationNameInfo &NameInfo,
2094 QualType T, TypeSourceInfo *TInfo,
2095 bool isInline, bool isImplicitlyDeclared) {
2096 assert(NameInfo.getName().getNameKind()
2097 == DeclarationName::CXXDestructorName &&
2098 "Name must refer to a destructor");
2099 return new (C, RD) CXXDestructorDecl(C, RD, StartLoc, NameInfo, T, TInfo,
2100 isInline, isImplicitlyDeclared);
2103 void CXXDestructorDecl::setOperatorDelete(FunctionDecl *OD) {
2104 auto *First = cast<CXXDestructorDecl>(getFirstDecl());
2105 if (OD && !First->OperatorDelete) {
2106 First->OperatorDelete = OD;
2107 if (auto *L = getASTMutationListener())
2108 L->ResolvedOperatorDelete(First, OD);
2112 void CXXConversionDecl::anchor() { }
2115 CXXConversionDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2116 return new (C, ID) CXXConversionDecl(C, nullptr, SourceLocation(),
2117 DeclarationNameInfo(), QualType(),
2118 nullptr, false, false, false,
2123 CXXConversionDecl::Create(ASTContext &C, CXXRecordDecl *RD,
2124 SourceLocation StartLoc,
2125 const DeclarationNameInfo &NameInfo,
2126 QualType T, TypeSourceInfo *TInfo,
2127 bool isInline, bool isExplicit,
2128 bool isConstexpr, SourceLocation EndLocation) {
2129 assert(NameInfo.getName().getNameKind()
2130 == DeclarationName::CXXConversionFunctionName &&
2131 "Name must refer to a conversion function");
2132 return new (C, RD) CXXConversionDecl(C, RD, StartLoc, NameInfo, T, TInfo,
2133 isInline, isExplicit, isConstexpr,
2137 bool CXXConversionDecl::isLambdaToBlockPointerConversion() const {
2138 return isImplicit() && getParent()->isLambda() &&
2139 getConversionType()->isBlockPointerType();
2142 void LinkageSpecDecl::anchor() { }
2144 LinkageSpecDecl *LinkageSpecDecl::Create(ASTContext &C,
2146 SourceLocation ExternLoc,
2147 SourceLocation LangLoc,
2150 return new (C, DC) LinkageSpecDecl(DC, ExternLoc, LangLoc, Lang, HasBraces);
2153 LinkageSpecDecl *LinkageSpecDecl::CreateDeserialized(ASTContext &C,
2155 return new (C, ID) LinkageSpecDecl(nullptr, SourceLocation(),
2156 SourceLocation(), lang_c, false);
2159 void UsingDirectiveDecl::anchor() { }
2161 UsingDirectiveDecl *UsingDirectiveDecl::Create(ASTContext &C, DeclContext *DC,
2163 SourceLocation NamespaceLoc,
2164 NestedNameSpecifierLoc QualifierLoc,
2165 SourceLocation IdentLoc,
2167 DeclContext *CommonAncestor) {
2168 if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Used))
2169 Used = NS->getOriginalNamespace();
2170 return new (C, DC) UsingDirectiveDecl(DC, L, NamespaceLoc, QualifierLoc,
2171 IdentLoc, Used, CommonAncestor);
2174 UsingDirectiveDecl *UsingDirectiveDecl::CreateDeserialized(ASTContext &C,
2176 return new (C, ID) UsingDirectiveDecl(nullptr, SourceLocation(),
2178 NestedNameSpecifierLoc(),
2179 SourceLocation(), nullptr, nullptr);
2182 NamespaceDecl *UsingDirectiveDecl::getNominatedNamespace() {
2183 if (NamespaceAliasDecl *NA =
2184 dyn_cast_or_null<NamespaceAliasDecl>(NominatedNamespace))
2185 return NA->getNamespace();
2186 return cast_or_null<NamespaceDecl>(NominatedNamespace);
2189 NamespaceDecl::NamespaceDecl(ASTContext &C, DeclContext *DC, bool Inline,
2190 SourceLocation StartLoc, SourceLocation IdLoc,
2191 IdentifierInfo *Id, NamespaceDecl *PrevDecl)
2192 : NamedDecl(Namespace, DC, IdLoc, Id), DeclContext(Namespace),
2193 redeclarable_base(C), LocStart(StartLoc), RBraceLoc(),
2194 AnonOrFirstNamespaceAndInline(nullptr, Inline) {
2195 setPreviousDecl(PrevDecl);
2198 AnonOrFirstNamespaceAndInline.setPointer(PrevDecl->getOriginalNamespace());
2201 NamespaceDecl *NamespaceDecl::Create(ASTContext &C, DeclContext *DC,
2202 bool Inline, SourceLocation StartLoc,
2203 SourceLocation IdLoc, IdentifierInfo *Id,
2204 NamespaceDecl *PrevDecl) {
2205 return new (C, DC) NamespaceDecl(C, DC, Inline, StartLoc, IdLoc, Id,
2209 NamespaceDecl *NamespaceDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2210 return new (C, ID) NamespaceDecl(C, nullptr, false, SourceLocation(),
2211 SourceLocation(), nullptr, nullptr);
2214 NamespaceDecl *NamespaceDecl::getOriginalNamespace() {
2218 return AnonOrFirstNamespaceAndInline.getPointer();
2221 const NamespaceDecl *NamespaceDecl::getOriginalNamespace() const {
2225 return AnonOrFirstNamespaceAndInline.getPointer();
2228 bool NamespaceDecl::isOriginalNamespace() const { return isFirstDecl(); }
2230 NamespaceDecl *NamespaceDecl::getNextRedeclarationImpl() {
2231 return getNextRedeclaration();
2233 NamespaceDecl *NamespaceDecl::getPreviousDeclImpl() {
2234 return getPreviousDecl();
2236 NamespaceDecl *NamespaceDecl::getMostRecentDeclImpl() {
2237 return getMostRecentDecl();
2240 void NamespaceAliasDecl::anchor() { }
2242 NamespaceAliasDecl *NamespaceAliasDecl::getNextRedeclarationImpl() {
2243 return getNextRedeclaration();
2245 NamespaceAliasDecl *NamespaceAliasDecl::getPreviousDeclImpl() {
2246 return getPreviousDecl();
2248 NamespaceAliasDecl *NamespaceAliasDecl::getMostRecentDeclImpl() {
2249 return getMostRecentDecl();
2252 NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC,
2253 SourceLocation UsingLoc,
2254 SourceLocation AliasLoc,
2255 IdentifierInfo *Alias,
2256 NestedNameSpecifierLoc QualifierLoc,
2257 SourceLocation IdentLoc,
2258 NamedDecl *Namespace) {
2259 // FIXME: Preserve the aliased namespace as written.
2260 if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Namespace))
2261 Namespace = NS->getOriginalNamespace();
2262 return new (C, DC) NamespaceAliasDecl(C, DC, UsingLoc, AliasLoc, Alias,
2263 QualifierLoc, IdentLoc, Namespace);
2266 NamespaceAliasDecl *
2267 NamespaceAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2268 return new (C, ID) NamespaceAliasDecl(C, nullptr, SourceLocation(),
2269 SourceLocation(), nullptr,
2270 NestedNameSpecifierLoc(),
2271 SourceLocation(), nullptr);
2274 void UsingShadowDecl::anchor() { }
2276 UsingShadowDecl::UsingShadowDecl(Kind K, ASTContext &C, DeclContext *DC,
2277 SourceLocation Loc, UsingDecl *Using,
2279 : NamedDecl(K, DC, Loc, Using ? Using->getDeclName() : DeclarationName()),
2280 redeclarable_base(C), Underlying(Target),
2281 UsingOrNextShadow(cast<NamedDecl>(Using)) {
2283 IdentifierNamespace = Target->getIdentifierNamespace();
2287 UsingShadowDecl::UsingShadowDecl(Kind K, ASTContext &C, EmptyShell Empty)
2288 : NamedDecl(K, nullptr, SourceLocation(), DeclarationName()),
2289 redeclarable_base(C), Underlying(), UsingOrNextShadow() {}
2292 UsingShadowDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2293 return new (C, ID) UsingShadowDecl(UsingShadow, C, EmptyShell());
2296 UsingDecl *UsingShadowDecl::getUsingDecl() const {
2297 const UsingShadowDecl *Shadow = this;
2298 while (const UsingShadowDecl *NextShadow =
2299 dyn_cast<UsingShadowDecl>(Shadow->UsingOrNextShadow))
2300 Shadow = NextShadow;
2301 return cast<UsingDecl>(Shadow->UsingOrNextShadow);
2304 void ConstructorUsingShadowDecl::anchor() { }
2306 ConstructorUsingShadowDecl *
2307 ConstructorUsingShadowDecl::Create(ASTContext &C, DeclContext *DC,
2308 SourceLocation Loc, UsingDecl *Using,
2309 NamedDecl *Target, bool IsVirtual) {
2310 return new (C, DC) ConstructorUsingShadowDecl(C, DC, Loc, Using, Target,
2314 ConstructorUsingShadowDecl *
2315 ConstructorUsingShadowDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2316 return new (C, ID) ConstructorUsingShadowDecl(C, EmptyShell());
2319 CXXRecordDecl *ConstructorUsingShadowDecl::getNominatedBaseClass() const {
2320 return getUsingDecl()->getQualifier()->getAsRecordDecl();
2323 void UsingDecl::anchor() { }
2325 void UsingDecl::addShadowDecl(UsingShadowDecl *S) {
2326 assert(std::find(shadow_begin(), shadow_end(), S) == shadow_end() &&
2327 "declaration already in set");
2328 assert(S->getUsingDecl() == this);
2330 if (FirstUsingShadow.getPointer())
2331 S->UsingOrNextShadow = FirstUsingShadow.getPointer();
2332 FirstUsingShadow.setPointer(S);
2335 void UsingDecl::removeShadowDecl(UsingShadowDecl *S) {
2336 assert(std::find(shadow_begin(), shadow_end(), S) != shadow_end() &&
2337 "declaration not in set");
2338 assert(S->getUsingDecl() == this);
2340 // Remove S from the shadow decl chain. This is O(n) but hopefully rare.
2342 if (FirstUsingShadow.getPointer() == S) {
2343 FirstUsingShadow.setPointer(
2344 dyn_cast<UsingShadowDecl>(S->UsingOrNextShadow));
2345 S->UsingOrNextShadow = this;
2349 UsingShadowDecl *Prev = FirstUsingShadow.getPointer();
2350 while (Prev->UsingOrNextShadow != S)
2351 Prev = cast<UsingShadowDecl>(Prev->UsingOrNextShadow);
2352 Prev->UsingOrNextShadow = S->UsingOrNextShadow;
2353 S->UsingOrNextShadow = this;
2356 UsingDecl *UsingDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation UL,
2357 NestedNameSpecifierLoc QualifierLoc,
2358 const DeclarationNameInfo &NameInfo,
2360 return new (C, DC) UsingDecl(DC, UL, QualifierLoc, NameInfo, HasTypename);
2363 UsingDecl *UsingDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2364 return new (C, ID) UsingDecl(nullptr, SourceLocation(),
2365 NestedNameSpecifierLoc(), DeclarationNameInfo(),
2369 SourceRange UsingDecl::getSourceRange() const {
2370 SourceLocation Begin = isAccessDeclaration()
2371 ? getQualifierLoc().getBeginLoc() : UsingLocation;
2372 return SourceRange(Begin, getNameInfo().getEndLoc());
2375 void UsingPackDecl::anchor() { }
2377 UsingPackDecl *UsingPackDecl::Create(ASTContext &C, DeclContext *DC,
2378 NamedDecl *InstantiatedFrom,
2379 ArrayRef<NamedDecl *> UsingDecls) {
2380 size_t Extra = additionalSizeToAlloc<NamedDecl *>(UsingDecls.size());
2381 return new (C, DC, Extra) UsingPackDecl(DC, InstantiatedFrom, UsingDecls);
2384 UsingPackDecl *UsingPackDecl::CreateDeserialized(ASTContext &C, unsigned ID,
2385 unsigned NumExpansions) {
2386 size_t Extra = additionalSizeToAlloc<NamedDecl *>(NumExpansions);
2387 auto *Result = new (C, ID, Extra) UsingPackDecl(nullptr, nullptr, None);
2388 Result->NumExpansions = NumExpansions;
2389 auto *Trail = Result->getTrailingObjects<NamedDecl *>();
2390 for (unsigned I = 0; I != NumExpansions; ++I)
2391 new (Trail + I) NamedDecl*(nullptr);
2395 void UnresolvedUsingValueDecl::anchor() { }
2397 UnresolvedUsingValueDecl *
2398 UnresolvedUsingValueDecl::Create(ASTContext &C, DeclContext *DC,
2399 SourceLocation UsingLoc,
2400 NestedNameSpecifierLoc QualifierLoc,
2401 const DeclarationNameInfo &NameInfo,
2402 SourceLocation EllipsisLoc) {
2403 return new (C, DC) UnresolvedUsingValueDecl(DC, C.DependentTy, UsingLoc,
2404 QualifierLoc, NameInfo,
2408 UnresolvedUsingValueDecl *
2409 UnresolvedUsingValueDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2410 return new (C, ID) UnresolvedUsingValueDecl(nullptr, QualType(),
2412 NestedNameSpecifierLoc(),
2413 DeclarationNameInfo(),
2417 SourceRange UnresolvedUsingValueDecl::getSourceRange() const {
2418 SourceLocation Begin = isAccessDeclaration()
2419 ? getQualifierLoc().getBeginLoc() : UsingLocation;
2420 return SourceRange(Begin, getNameInfo().getEndLoc());
2423 void UnresolvedUsingTypenameDecl::anchor() { }
2425 UnresolvedUsingTypenameDecl *
2426 UnresolvedUsingTypenameDecl::Create(ASTContext &C, DeclContext *DC,
2427 SourceLocation UsingLoc,
2428 SourceLocation TypenameLoc,
2429 NestedNameSpecifierLoc QualifierLoc,
2430 SourceLocation TargetNameLoc,
2431 DeclarationName TargetName,
2432 SourceLocation EllipsisLoc) {
2433 return new (C, DC) UnresolvedUsingTypenameDecl(
2434 DC, UsingLoc, TypenameLoc, QualifierLoc, TargetNameLoc,
2435 TargetName.getAsIdentifierInfo(), EllipsisLoc);
2438 UnresolvedUsingTypenameDecl *
2439 UnresolvedUsingTypenameDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2440 return new (C, ID) UnresolvedUsingTypenameDecl(
2441 nullptr, SourceLocation(), SourceLocation(), NestedNameSpecifierLoc(),
2442 SourceLocation(), nullptr, SourceLocation());
2445 void StaticAssertDecl::anchor() { }
2447 StaticAssertDecl *StaticAssertDecl::Create(ASTContext &C, DeclContext *DC,
2448 SourceLocation StaticAssertLoc,
2450 StringLiteral *Message,
2451 SourceLocation RParenLoc,
2453 return new (C, DC) StaticAssertDecl(DC, StaticAssertLoc, AssertExpr, Message,
2457 StaticAssertDecl *StaticAssertDecl::CreateDeserialized(ASTContext &C,
2459 return new (C, ID) StaticAssertDecl(nullptr, SourceLocation(), nullptr,
2460 nullptr, SourceLocation(), false);
2463 void BindingDecl::anchor() {}
2465 BindingDecl *BindingDecl::Create(ASTContext &C, DeclContext *DC,
2466 SourceLocation IdLoc, IdentifierInfo *Id) {
2467 return new (C, DC) BindingDecl(DC, IdLoc, Id);
2470 BindingDecl *BindingDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2471 return new (C, ID) BindingDecl(nullptr, SourceLocation(), nullptr);
2474 VarDecl *BindingDecl::getHoldingVar() const {
2475 Expr *B = getBinding();
2478 auto *DRE = dyn_cast<DeclRefExpr>(B->IgnoreImplicit());
2482 auto *VD = dyn_cast<VarDecl>(DRE->getDecl());
2483 assert(VD->isImplicit() && "holding var for binding decl not implicit");
2487 void DecompositionDecl::anchor() {}
2489 DecompositionDecl *DecompositionDecl::Create(ASTContext &C, DeclContext *DC,
2490 SourceLocation StartLoc,
2491 SourceLocation LSquareLoc,
2492 QualType T, TypeSourceInfo *TInfo,
2494 ArrayRef<BindingDecl *> Bindings) {
2495 size_t Extra = additionalSizeToAlloc<BindingDecl *>(Bindings.size());
2496 return new (C, DC, Extra)
2497 DecompositionDecl(C, DC, StartLoc, LSquareLoc, T, TInfo, SC, Bindings);
2500 DecompositionDecl *DecompositionDecl::CreateDeserialized(ASTContext &C,
2502 unsigned NumBindings) {
2503 size_t Extra = additionalSizeToAlloc<BindingDecl *>(NumBindings);
2504 auto *Result = new (C, ID, Extra)
2505 DecompositionDecl(C, nullptr, SourceLocation(), SourceLocation(),
2506 QualType(), nullptr, StorageClass(), None);
2507 // Set up and clean out the bindings array.
2508 Result->NumBindings = NumBindings;
2509 auto *Trail = Result->getTrailingObjects<BindingDecl *>();
2510 for (unsigned I = 0; I != NumBindings; ++I)
2511 new (Trail + I) BindingDecl*(nullptr);
2515 void DecompositionDecl::printName(llvm::raw_ostream &os) const {
2518 for (auto *B : bindings()) {
2527 MSPropertyDecl *MSPropertyDecl::Create(ASTContext &C, DeclContext *DC,
2528 SourceLocation L, DeclarationName N,
2529 QualType T, TypeSourceInfo *TInfo,
2530 SourceLocation StartL,
2531 IdentifierInfo *Getter,
2532 IdentifierInfo *Setter) {
2533 return new (C, DC) MSPropertyDecl(DC, L, N, T, TInfo, StartL, Getter, Setter);
2536 MSPropertyDecl *MSPropertyDecl::CreateDeserialized(ASTContext &C,
2538 return new (C, ID) MSPropertyDecl(nullptr, SourceLocation(),
2539 DeclarationName(), QualType(), nullptr,
2540 SourceLocation(), nullptr, nullptr);
2543 static const char *getAccessName(AccessSpecifier AS) {
2546 llvm_unreachable("Invalid access specifier!");
2554 llvm_unreachable("Invalid access specifier!");
2557 const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
2558 AccessSpecifier AS) {
2559 return DB << getAccessName(AS);
2562 const PartialDiagnostic &clang::operator<<(const PartialDiagnostic &DB,
2563 AccessSpecifier AS) {
2564 return DB << getAccessName(AS);