1 //===--- DeclObjC.cpp - ObjC 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 Objective-C related Decl classes.
12 //===----------------------------------------------------------------------===//
14 #include "clang/AST/DeclObjC.h"
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/ASTMutationListener.h"
17 #include "clang/AST/Attr.h"
18 #include "clang/AST/Stmt.h"
19 #include "llvm/ADT/STLExtras.h"
20 #include "llvm/ADT/SmallString.h"
21 using namespace clang;
23 //===----------------------------------------------------------------------===//
25 //===----------------------------------------------------------------------===//
27 void ObjCListBase::set(void *const* InList, unsigned Elts, ASTContext &Ctx) {
29 if (Elts == 0) return; // Setting to an empty list is a noop.
32 List = new (Ctx) void*[Elts];
34 memcpy(List, InList, sizeof(void*)*Elts);
37 void ObjCProtocolList::set(ObjCProtocolDecl* const* InList, unsigned Elts,
38 const SourceLocation *Locs, ASTContext &Ctx) {
42 Locations = new (Ctx) SourceLocation[Elts];
43 memcpy(Locations, Locs, sizeof(SourceLocation) * Elts);
44 set(InList, Elts, Ctx);
47 //===----------------------------------------------------------------------===//
49 //===----------------------------------------------------------------------===//
51 void ObjCContainerDecl::anchor() { }
53 /// getIvarDecl - This method looks up an ivar in this ContextDecl.
56 ObjCContainerDecl::getIvarDecl(IdentifierInfo *Id) const {
57 lookup_result R = lookup(Id);
58 for (lookup_iterator Ivar = R.begin(), IvarEnd = R.end();
59 Ivar != IvarEnd; ++Ivar) {
60 if (ObjCIvarDecl *ivar = dyn_cast<ObjCIvarDecl>(*Ivar))
66 // Get the local instance/class method declared in this interface.
68 ObjCContainerDecl::getMethod(Selector Sel, bool isInstance,
69 bool AllowHidden) const {
70 // If this context is a hidden protocol definition, don't find any
72 if (const ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(this)) {
73 if (const ObjCProtocolDecl *Def = Proto->getDefinition())
74 if (Def->isHidden() && !AllowHidden)
78 // Since instance & class methods can have the same name, the loop below
79 // ensures we get the correct method.
81 // @interface Whatever
82 // - (int) class_method;
83 // + (float) class_method;
86 lookup_result R = lookup(Sel);
87 for (lookup_iterator Meth = R.begin(), MethEnd = R.end();
88 Meth != MethEnd; ++Meth) {
89 ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(*Meth);
90 if (MD && MD->isInstanceMethod() == isInstance)
96 /// \brief This routine returns 'true' if a user declared setter method was
97 /// found in the class, its protocols, its super classes or categories.
98 /// It also returns 'true' if one of its categories has declared a 'readwrite'
99 /// property. This is because, user must provide a setter method for the
100 /// category's 'readwrite' property.
101 bool ObjCContainerDecl::HasUserDeclaredSetterMethod(
102 const ObjCPropertyDecl *Property) const {
103 Selector Sel = Property->getSetterName();
104 lookup_result R = lookup(Sel);
105 for (lookup_iterator Meth = R.begin(), MethEnd = R.end();
106 Meth != MethEnd; ++Meth) {
107 ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(*Meth);
108 if (MD && MD->isInstanceMethod() && !MD->isImplicit())
112 if (const ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(this)) {
113 // Also look into categories, including class extensions, looking
114 // for a user declared instance method.
115 for (const auto *Cat : ID->visible_categories()) {
116 if (ObjCMethodDecl *MD = Cat->getInstanceMethod(Sel))
117 if (!MD->isImplicit())
119 if (Cat->IsClassExtension())
121 // Also search through the categories looking for a 'readwrite'
122 // declaration of this property. If one found, presumably a setter will
123 // be provided (properties declared in categories will not get
124 // auto-synthesized).
125 for (const auto *P : Cat->properties())
126 if (P->getIdentifier() == Property->getIdentifier()) {
127 if (P->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_readwrite)
133 // Also look into protocols, for a user declared instance method.
134 for (const auto *Proto : ID->all_referenced_protocols())
135 if (Proto->HasUserDeclaredSetterMethod(Property))
138 // And in its super class.
139 ObjCInterfaceDecl *OSC = ID->getSuperClass();
141 if (OSC->HasUserDeclaredSetterMethod(Property))
143 OSC = OSC->getSuperClass();
146 if (const ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(this))
147 for (const auto *PI : PD->protocols())
148 if (PI->HasUserDeclaredSetterMethod(Property))
154 ObjCPropertyDecl::findPropertyDecl(const DeclContext *DC,
155 const IdentifierInfo *propertyID) {
156 // If this context is a hidden protocol definition, don't find any
158 if (const ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(DC)) {
159 if (const ObjCProtocolDecl *Def = Proto->getDefinition())
164 DeclContext::lookup_result R = DC->lookup(propertyID);
165 for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E;
167 if (ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(*I))
174 ObjCPropertyDecl::getDefaultSynthIvarName(ASTContext &Ctx) const {
175 SmallString<128> ivarName;
177 llvm::raw_svector_ostream os(ivarName);
178 os << '_' << getIdentifier()->getName();
180 return &Ctx.Idents.get(ivarName.str());
183 /// FindPropertyDeclaration - Finds declaration of the property given its name
184 /// in 'PropertyId' and returns it. It returns 0, if not found.
185 ObjCPropertyDecl *ObjCContainerDecl::FindPropertyDeclaration(
186 const IdentifierInfo *PropertyId) const {
187 // Don't find properties within hidden protocol definitions.
188 if (const ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(this)) {
189 if (const ObjCProtocolDecl *Def = Proto->getDefinition())
194 if (ObjCPropertyDecl *PD =
195 ObjCPropertyDecl::findPropertyDecl(cast<DeclContext>(this), PropertyId))
201 case Decl::ObjCProtocol: {
202 const ObjCProtocolDecl *PID = cast<ObjCProtocolDecl>(this);
203 for (const auto *I : PID->protocols())
204 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId))
208 case Decl::ObjCInterface: {
209 const ObjCInterfaceDecl *OID = cast<ObjCInterfaceDecl>(this);
210 // Look through categories (but not extensions).
211 for (const auto *Cat : OID->visible_categories()) {
212 if (!Cat->IsClassExtension())
213 if (ObjCPropertyDecl *P = Cat->FindPropertyDeclaration(PropertyId))
217 // Look through protocols.
218 for (const auto *I : OID->all_referenced_protocols())
219 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId))
222 // Finally, check the super class.
223 if (const ObjCInterfaceDecl *superClass = OID->getSuperClass())
224 return superClass->FindPropertyDeclaration(PropertyId);
227 case Decl::ObjCCategory: {
228 const ObjCCategoryDecl *OCD = cast<ObjCCategoryDecl>(this);
229 // Look through protocols.
230 if (!OCD->IsClassExtension())
231 for (const auto *I : OCD->protocols())
232 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId))
240 void ObjCInterfaceDecl::anchor() { }
242 /// FindPropertyVisibleInPrimaryClass - Finds declaration of the property
243 /// with name 'PropertyId' in the primary class; including those in protocols
244 /// (direct or indirect) used by the primary class.
247 ObjCInterfaceDecl::FindPropertyVisibleInPrimaryClass(
248 IdentifierInfo *PropertyId) const {
249 // FIXME: Should make sure no callers ever do this.
250 if (!hasDefinition())
253 if (data().ExternallyCompleted)
254 LoadExternalDefinition();
256 if (ObjCPropertyDecl *PD =
257 ObjCPropertyDecl::findPropertyDecl(cast<DeclContext>(this), PropertyId))
260 // Look through protocols.
261 for (const auto *I : all_referenced_protocols())
262 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId))
268 void ObjCInterfaceDecl::collectPropertiesToImplement(PropertyMap &PM,
269 PropertyDeclOrder &PO) const {
270 for (auto *Prop : properties()) {
271 PM[Prop->getIdentifier()] = Prop;
274 for (const auto *PI : all_referenced_protocols())
275 PI->collectPropertiesToImplement(PM, PO);
276 // Note, the properties declared only in class extensions are still copied
277 // into the main @interface's property list, and therefore we don't
278 // explicitly, have to search class extension properties.
281 bool ObjCInterfaceDecl::isArcWeakrefUnavailable() const {
282 const ObjCInterfaceDecl *Class = this;
284 if (Class->hasAttr<ArcWeakrefUnavailableAttr>())
286 Class = Class->getSuperClass();
291 const ObjCInterfaceDecl *ObjCInterfaceDecl::isObjCRequiresPropertyDefs() const {
292 const ObjCInterfaceDecl *Class = this;
294 if (Class->hasAttr<ObjCRequiresPropertyDefsAttr>())
296 Class = Class->getSuperClass();
301 void ObjCInterfaceDecl::mergeClassExtensionProtocolList(
302 ObjCProtocolDecl *const* ExtList, unsigned ExtNum,
305 if (data().ExternallyCompleted)
306 LoadExternalDefinition();
308 if (data().AllReferencedProtocols.empty() &&
309 data().ReferencedProtocols.empty()) {
310 data().AllReferencedProtocols.set(ExtList, ExtNum, C);
314 // Check for duplicate protocol in class's protocol list.
315 // This is O(n*m). But it is extremely rare and number of protocols in
316 // class or its extension are very few.
317 SmallVector<ObjCProtocolDecl*, 8> ProtocolRefs;
318 for (unsigned i = 0; i < ExtNum; i++) {
319 bool protocolExists = false;
320 ObjCProtocolDecl *ProtoInExtension = ExtList[i];
321 for (auto *Proto : all_referenced_protocols()) {
322 if (C.ProtocolCompatibleWithProtocol(ProtoInExtension, Proto)) {
323 protocolExists = true;
327 // Do we want to warn on a protocol in extension class which
328 // already exist in the class? Probably not.
330 ProtocolRefs.push_back(ProtoInExtension);
333 if (ProtocolRefs.empty())
336 // Merge ProtocolRefs into class's protocol list;
337 ProtocolRefs.append(all_referenced_protocol_begin(),
338 all_referenced_protocol_end());
340 data().AllReferencedProtocols.set(ProtocolRefs.data(), ProtocolRefs.size(),C);
343 const ObjCInterfaceDecl *
344 ObjCInterfaceDecl::findInterfaceWithDesignatedInitializers() const {
345 const ObjCInterfaceDecl *IFace = this;
347 if (IFace->hasDesignatedInitializers())
349 if (!IFace->inheritsDesignatedInitializers())
351 IFace = IFace->getSuperClass();
356 static bool isIntroducingInitializers(const ObjCInterfaceDecl *D) {
357 for (const auto *MD : D->instance_methods()) {
358 if (MD->getMethodFamily() == OMF_init && !MD->isOverriding())
361 for (const auto *Ext : D->visible_extensions()) {
362 for (const auto *MD : Ext->instance_methods()) {
363 if (MD->getMethodFamily() == OMF_init && !MD->isOverriding())
367 if (const auto *ImplD = D->getImplementation()) {
368 for (const auto *MD : ImplD->instance_methods()) {
369 if (MD->getMethodFamily() == OMF_init && !MD->isOverriding())
376 bool ObjCInterfaceDecl::inheritsDesignatedInitializers() const {
377 switch (data().InheritedDesignatedInitializers) {
378 case DefinitionData::IDI_Inherited:
380 case DefinitionData::IDI_NotInherited:
382 case DefinitionData::IDI_Unknown: {
383 // If the class introduced initializers we conservatively assume that we
384 // don't know if any of them is a designated initializer to avoid possible
385 // misleading warnings.
386 if (isIntroducingInitializers(this)) {
387 data().InheritedDesignatedInitializers = DefinitionData::IDI_NotInherited;
389 if (auto SuperD = getSuperClass()) {
390 data().InheritedDesignatedInitializers =
391 SuperD->declaresOrInheritsDesignatedInitializers() ?
392 DefinitionData::IDI_Inherited :
393 DefinitionData::IDI_NotInherited;
395 data().InheritedDesignatedInitializers =
396 DefinitionData::IDI_NotInherited;
399 assert(data().InheritedDesignatedInitializers
400 != DefinitionData::IDI_Unknown);
401 return data().InheritedDesignatedInitializers ==
402 DefinitionData::IDI_Inherited;
406 llvm_unreachable("unexpected InheritedDesignatedInitializers value");
409 void ObjCInterfaceDecl::getDesignatedInitializers(
410 llvm::SmallVectorImpl<const ObjCMethodDecl *> &Methods) const {
411 // Check for a complete definition and recover if not so.
412 if (!isThisDeclarationADefinition())
414 if (data().ExternallyCompleted)
415 LoadExternalDefinition();
417 const ObjCInterfaceDecl *IFace= findInterfaceWithDesignatedInitializers();
421 for (const auto *MD : IFace->instance_methods())
422 if (MD->isThisDeclarationADesignatedInitializer())
423 Methods.push_back(MD);
424 for (const auto *Ext : IFace->visible_extensions()) {
425 for (const auto *MD : Ext->instance_methods())
426 if (MD->isThisDeclarationADesignatedInitializer())
427 Methods.push_back(MD);
431 bool ObjCInterfaceDecl::isDesignatedInitializer(Selector Sel,
432 const ObjCMethodDecl **InitMethod) const {
433 // Check for a complete definition and recover if not so.
434 if (!isThisDeclarationADefinition())
436 if (data().ExternallyCompleted)
437 LoadExternalDefinition();
439 const ObjCInterfaceDecl *IFace= findInterfaceWithDesignatedInitializers();
443 if (const ObjCMethodDecl *MD = IFace->getInstanceMethod(Sel)) {
444 if (MD->isThisDeclarationADesignatedInitializer()) {
450 for (const auto *Ext : IFace->visible_extensions()) {
451 if (const ObjCMethodDecl *MD = Ext->getInstanceMethod(Sel)) {
452 if (MD->isThisDeclarationADesignatedInitializer()) {
462 void ObjCInterfaceDecl::allocateDefinitionData() {
463 assert(!hasDefinition() && "ObjC class already has a definition");
464 Data.setPointer(new (getASTContext()) DefinitionData());
465 Data.getPointer()->Definition = this;
467 // Make the type point at the definition, now that we have one.
469 cast<ObjCInterfaceType>(TypeForDecl)->Decl = this;
472 void ObjCInterfaceDecl::startDefinition() {
473 allocateDefinitionData();
475 // Update all of the declarations with a pointer to the definition.
476 for (auto RD : redecls()) {
482 ObjCIvarDecl *ObjCInterfaceDecl::lookupInstanceVariable(IdentifierInfo *ID,
483 ObjCInterfaceDecl *&clsDeclared) {
484 // FIXME: Should make sure no callers ever do this.
485 if (!hasDefinition())
488 if (data().ExternallyCompleted)
489 LoadExternalDefinition();
491 ObjCInterfaceDecl* ClassDecl = this;
492 while (ClassDecl != nullptr) {
493 if (ObjCIvarDecl *I = ClassDecl->getIvarDecl(ID)) {
494 clsDeclared = ClassDecl;
498 for (const auto *Ext : ClassDecl->visible_extensions()) {
499 if (ObjCIvarDecl *I = Ext->getIvarDecl(ID)) {
500 clsDeclared = ClassDecl;
505 ClassDecl = ClassDecl->getSuperClass();
510 /// lookupInheritedClass - This method returns ObjCInterfaceDecl * of the super
511 /// class whose name is passed as argument. If it is not one of the super classes
512 /// the it returns NULL.
513 ObjCInterfaceDecl *ObjCInterfaceDecl::lookupInheritedClass(
514 const IdentifierInfo*ICName) {
515 // FIXME: Should make sure no callers ever do this.
516 if (!hasDefinition())
519 if (data().ExternallyCompleted)
520 LoadExternalDefinition();
522 ObjCInterfaceDecl* ClassDecl = this;
523 while (ClassDecl != nullptr) {
524 if (ClassDecl->getIdentifier() == ICName)
526 ClassDecl = ClassDecl->getSuperClass();
532 ObjCInterfaceDecl::lookupNestedProtocol(IdentifierInfo *Name) {
533 for (auto *P : all_referenced_protocols())
534 if (P->lookupProtocolNamed(Name))
536 ObjCInterfaceDecl *SuperClass = getSuperClass();
537 return SuperClass ? SuperClass->lookupNestedProtocol(Name) : nullptr;
540 /// lookupMethod - This method returns an instance/class method by looking in
541 /// the class, its categories, and its super classes (using a linear search).
542 /// When argument category "C" is specified, any implicit method found
543 /// in this category is ignored.
544 ObjCMethodDecl *ObjCInterfaceDecl::lookupMethod(Selector Sel,
546 bool shallowCategoryLookup,
548 const ObjCCategoryDecl *C) const
550 // FIXME: Should make sure no callers ever do this.
551 if (!hasDefinition())
554 const ObjCInterfaceDecl* ClassDecl = this;
555 ObjCMethodDecl *MethodDecl = nullptr;
557 if (data().ExternallyCompleted)
558 LoadExternalDefinition();
561 // 1. Look through primary class.
562 if ((MethodDecl = ClassDecl->getMethod(Sel, isInstance)))
565 // 2. Didn't find one yet - now look through categories.
566 for (const auto *Cat : ClassDecl->visible_categories())
567 if ((MethodDecl = Cat->getMethod(Sel, isInstance)))
568 if (C != Cat || !MethodDecl->isImplicit())
571 // 3. Didn't find one yet - look through primary class's protocols.
572 for (const auto *I : ClassDecl->protocols())
573 if ((MethodDecl = I->lookupMethod(Sel, isInstance)))
576 // 4. Didn't find one yet - now look through categories' protocols
577 if (!shallowCategoryLookup)
578 for (const auto *Cat : ClassDecl->visible_categories()) {
579 // Didn't find one yet - look through protocols.
580 const ObjCList<ObjCProtocolDecl> &Protocols =
581 Cat->getReferencedProtocols();
582 for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
583 E = Protocols.end(); I != E; ++I)
584 if ((MethodDecl = (*I)->lookupMethod(Sel, isInstance)))
585 if (C != Cat || !MethodDecl->isImplicit())
593 // 5. Get to the super class (if any).
594 ClassDecl = ClassDecl->getSuperClass();
599 // Will search "local" class/category implementations for a method decl.
600 // If failed, then we search in class's root for an instance method.
601 // Returns 0 if no method is found.
602 ObjCMethodDecl *ObjCInterfaceDecl::lookupPrivateMethod(
604 bool Instance) const {
605 // FIXME: Should make sure no callers ever do this.
606 if (!hasDefinition())
609 if (data().ExternallyCompleted)
610 LoadExternalDefinition();
612 ObjCMethodDecl *Method = nullptr;
613 if (ObjCImplementationDecl *ImpDecl = getImplementation())
614 Method = Instance ? ImpDecl->getInstanceMethod(Sel)
615 : ImpDecl->getClassMethod(Sel);
617 // Look through local category implementations associated with the class.
619 Method = getCategoryMethod(Sel, Instance);
621 // Before we give up, check if the selector is an instance method.
622 // But only in the root. This matches gcc's behavior and what the
624 if (!Instance && !Method && !getSuperClass()) {
625 Method = lookupInstanceMethod(Sel);
626 // Look through local category implementations associated
627 // with the root class.
629 Method = lookupPrivateMethod(Sel, true);
632 if (!Method && getSuperClass())
633 return getSuperClass()->lookupPrivateMethod(Sel, Instance);
637 //===----------------------------------------------------------------------===//
639 //===----------------------------------------------------------------------===//
641 ObjCMethodDecl *ObjCMethodDecl::Create(
642 ASTContext &C, SourceLocation beginLoc, SourceLocation endLoc,
643 Selector SelInfo, QualType T, TypeSourceInfo *ReturnTInfo,
644 DeclContext *contextDecl, bool isInstance, bool isVariadic,
645 bool isPropertyAccessor, bool isImplicitlyDeclared, bool isDefined,
646 ImplementationControl impControl, bool HasRelatedResultType) {
647 return new (C, contextDecl) ObjCMethodDecl(
648 beginLoc, endLoc, SelInfo, T, ReturnTInfo, contextDecl, isInstance,
649 isVariadic, isPropertyAccessor, isImplicitlyDeclared, isDefined,
650 impControl, HasRelatedResultType);
653 ObjCMethodDecl *ObjCMethodDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
654 return new (C, ID) ObjCMethodDecl(SourceLocation(), SourceLocation(),
655 Selector(), QualType(), nullptr, nullptr);
658 bool ObjCMethodDecl::isThisDeclarationADesignatedInitializer() const {
659 return getMethodFamily() == OMF_init &&
660 hasAttr<ObjCDesignatedInitializerAttr>();
663 bool ObjCMethodDecl::isDesignatedInitializerForTheInterface(
664 const ObjCMethodDecl **InitMethod) const {
665 if (getMethodFamily() != OMF_init)
667 const DeclContext *DC = getDeclContext();
668 if (isa<ObjCProtocolDecl>(DC))
670 if (const ObjCInterfaceDecl *ID = getClassInterface())
671 return ID->isDesignatedInitializer(getSelector(), InitMethod);
675 Stmt *ObjCMethodDecl::getBody() const {
676 return Body.get(getASTContext().getExternalSource());
679 void ObjCMethodDecl::setAsRedeclaration(const ObjCMethodDecl *PrevMethod) {
681 getASTContext().setObjCMethodRedeclaration(PrevMethod, this);
682 IsRedeclaration = true;
683 PrevMethod->HasRedeclaration = true;
686 void ObjCMethodDecl::setParamsAndSelLocs(ASTContext &C,
687 ArrayRef<ParmVarDecl*> Params,
688 ArrayRef<SourceLocation> SelLocs) {
689 ParamsAndSelLocs = nullptr;
690 NumParams = Params.size();
691 if (Params.empty() && SelLocs.empty())
694 unsigned Size = sizeof(ParmVarDecl *) * NumParams +
695 sizeof(SourceLocation) * SelLocs.size();
696 ParamsAndSelLocs = C.Allocate(Size);
697 std::copy(Params.begin(), Params.end(), getParams());
698 std::copy(SelLocs.begin(), SelLocs.end(), getStoredSelLocs());
701 void ObjCMethodDecl::getSelectorLocs(
702 SmallVectorImpl<SourceLocation> &SelLocs) const {
703 for (unsigned i = 0, e = getNumSelectorLocs(); i != e; ++i)
704 SelLocs.push_back(getSelectorLoc(i));
707 void ObjCMethodDecl::setMethodParams(ASTContext &C,
708 ArrayRef<ParmVarDecl*> Params,
709 ArrayRef<SourceLocation> SelLocs) {
710 assert((!SelLocs.empty() || isImplicit()) &&
711 "No selector locs for non-implicit method");
713 return setParamsAndSelLocs(C, Params, llvm::None);
715 SelLocsKind = hasStandardSelectorLocs(getSelector(), SelLocs, Params,
717 if (SelLocsKind != SelLoc_NonStandard)
718 return setParamsAndSelLocs(C, Params, llvm::None);
720 setParamsAndSelLocs(C, Params, SelLocs);
723 /// \brief A definition will return its interface declaration.
724 /// An interface declaration will return its definition.
725 /// Otherwise it will return itself.
726 ObjCMethodDecl *ObjCMethodDecl::getNextRedeclarationImpl() {
727 ASTContext &Ctx = getASTContext();
728 ObjCMethodDecl *Redecl = nullptr;
729 if (HasRedeclaration)
730 Redecl = const_cast<ObjCMethodDecl*>(Ctx.getObjCMethodRedeclaration(this));
734 Decl *CtxD = cast<Decl>(getDeclContext());
736 if (!CtxD->isInvalidDecl()) {
737 if (ObjCInterfaceDecl *IFD = dyn_cast<ObjCInterfaceDecl>(CtxD)) {
738 if (ObjCImplementationDecl *ImplD = Ctx.getObjCImplementation(IFD))
739 if (!ImplD->isInvalidDecl())
740 Redecl = ImplD->getMethod(getSelector(), isInstanceMethod());
742 } else if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(CtxD)) {
743 if (ObjCCategoryImplDecl *ImplD = Ctx.getObjCImplementation(CD))
744 if (!ImplD->isInvalidDecl())
745 Redecl = ImplD->getMethod(getSelector(), isInstanceMethod());
747 } else if (ObjCImplementationDecl *ImplD =
748 dyn_cast<ObjCImplementationDecl>(CtxD)) {
749 if (ObjCInterfaceDecl *IFD = ImplD->getClassInterface())
750 if (!IFD->isInvalidDecl())
751 Redecl = IFD->getMethod(getSelector(), isInstanceMethod());
753 } else if (ObjCCategoryImplDecl *CImplD =
754 dyn_cast<ObjCCategoryImplDecl>(CtxD)) {
755 if (ObjCCategoryDecl *CatD = CImplD->getCategoryDecl())
756 if (!CatD->isInvalidDecl())
757 Redecl = CatD->getMethod(getSelector(), isInstanceMethod());
761 if (!Redecl && isRedeclaration()) {
762 // This is the last redeclaration, go back to the first method.
763 return cast<ObjCContainerDecl>(CtxD)->getMethod(getSelector(),
767 return Redecl ? Redecl : this;
770 ObjCMethodDecl *ObjCMethodDecl::getCanonicalDecl() {
771 Decl *CtxD = cast<Decl>(getDeclContext());
773 if (ObjCImplementationDecl *ImplD = dyn_cast<ObjCImplementationDecl>(CtxD)) {
774 if (ObjCInterfaceDecl *IFD = ImplD->getClassInterface())
775 if (ObjCMethodDecl *MD = IFD->getMethod(getSelector(),
779 } else if (ObjCCategoryImplDecl *CImplD =
780 dyn_cast<ObjCCategoryImplDecl>(CtxD)) {
781 if (ObjCCategoryDecl *CatD = CImplD->getCategoryDecl())
782 if (ObjCMethodDecl *MD = CatD->getMethod(getSelector(),
787 if (isRedeclaration())
788 return cast<ObjCContainerDecl>(CtxD)->getMethod(getSelector(),
794 SourceLocation ObjCMethodDecl::getLocEnd() const {
795 if (Stmt *Body = getBody())
796 return Body->getLocEnd();
800 ObjCMethodFamily ObjCMethodDecl::getMethodFamily() const {
801 ObjCMethodFamily family = static_cast<ObjCMethodFamily>(Family);
802 if (family != static_cast<unsigned>(InvalidObjCMethodFamily))
805 // Check for an explicit attribute.
806 if (const ObjCMethodFamilyAttr *attr = getAttr<ObjCMethodFamilyAttr>()) {
807 // The unfortunate necessity of mapping between enums here is due
808 // to the attributes framework.
809 switch (attr->getFamily()) {
810 case ObjCMethodFamilyAttr::OMF_None: family = OMF_None; break;
811 case ObjCMethodFamilyAttr::OMF_alloc: family = OMF_alloc; break;
812 case ObjCMethodFamilyAttr::OMF_copy: family = OMF_copy; break;
813 case ObjCMethodFamilyAttr::OMF_init: family = OMF_init; break;
814 case ObjCMethodFamilyAttr::OMF_mutableCopy: family = OMF_mutableCopy; break;
815 case ObjCMethodFamilyAttr::OMF_new: family = OMF_new; break;
817 Family = static_cast<unsigned>(family);
821 family = getSelector().getMethodFamily();
823 case OMF_None: break;
825 // init only has a conventional meaning for an instance method, and
826 // it has to return an object.
828 if (!isInstanceMethod() || !getReturnType()->isObjCObjectPointerType())
832 // alloc/copy/new have a conventional meaning for both class and
833 // instance methods, but they require an object return.
836 case OMF_mutableCopy:
838 if (!getReturnType()->isObjCObjectPointerType())
842 // These selectors have a conventional meaning only for instance methods.
847 case OMF_autorelease:
848 case OMF_retainCount:
850 if (!isInstanceMethod())
855 if (isInstanceMethod() || !getReturnType()->isVoidType())
859 case OMF_performSelector:
860 if (!isInstanceMethod() || !getReturnType()->isObjCIdType())
863 unsigned noParams = param_size();
864 if (noParams < 1 || noParams > 3)
867 ObjCMethodDecl::param_type_iterator it = param_type_begin();
868 QualType ArgT = (*it);
869 if (!ArgT->isObjCSelType()) {
876 if (!ArgT->isObjCIdType()) {
888 Family = static_cast<unsigned>(family);
892 void ObjCMethodDecl::createImplicitParams(ASTContext &Context,
893 const ObjCInterfaceDecl *OID) {
895 if (isInstanceMethod()) {
896 // There may be no interface context due to error in declaration
897 // of the interface (which has been reported). Recover gracefully.
899 selfTy = Context.getObjCInterfaceType(OID);
900 selfTy = Context.getObjCObjectPointerType(selfTy);
902 selfTy = Context.getObjCIdType();
904 } else // we have a factory method.
905 selfTy = Context.getObjCClassType();
907 bool selfIsPseudoStrong = false;
908 bool selfIsConsumed = false;
910 if (Context.getLangOpts().ObjCAutoRefCount) {
911 if (isInstanceMethod()) {
912 selfIsConsumed = hasAttr<NSConsumesSelfAttr>();
914 // 'self' is always __strong. It's actually pseudo-strong except
915 // in init methods (or methods labeled ns_consumes_self), though.
917 qs.setObjCLifetime(Qualifiers::OCL_Strong);
918 selfTy = Context.getQualifiedType(selfTy, qs);
920 // In addition, 'self' is const unless this is an init method.
921 if (getMethodFamily() != OMF_init && !selfIsConsumed) {
922 selfTy = selfTy.withConst();
923 selfIsPseudoStrong = true;
927 assert(isClassMethod());
928 // 'self' is always const in class methods.
929 selfTy = selfTy.withConst();
930 selfIsPseudoStrong = true;
934 ImplicitParamDecl *self
935 = ImplicitParamDecl::Create(Context, this, SourceLocation(),
936 &Context.Idents.get("self"), selfTy);
940 self->addAttr(NSConsumedAttr::CreateImplicit(Context));
942 if (selfIsPseudoStrong)
943 self->setARCPseudoStrong(true);
945 setCmdDecl(ImplicitParamDecl::Create(Context, this, SourceLocation(),
946 &Context.Idents.get("_cmd"),
947 Context.getObjCSelType()));
950 ObjCInterfaceDecl *ObjCMethodDecl::getClassInterface() {
951 if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(getDeclContext()))
953 if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(getDeclContext()))
954 return CD->getClassInterface();
955 if (ObjCImplDecl *IMD = dyn_cast<ObjCImplDecl>(getDeclContext()))
956 return IMD->getClassInterface();
957 if (isa<ObjCProtocolDecl>(getDeclContext()))
959 llvm_unreachable("unknown method context");
962 SourceRange ObjCMethodDecl::getReturnTypeSourceRange() const {
963 const auto *TSI = getReturnTypeSourceInfo();
965 return TSI->getTypeLoc().getSourceRange();
966 return SourceRange();
969 static void CollectOverriddenMethodsRecurse(const ObjCContainerDecl *Container,
970 const ObjCMethodDecl *Method,
971 SmallVectorImpl<const ObjCMethodDecl *> &Methods,
976 // In categories look for overriden methods from protocols. A method from
977 // category is not "overriden" since it is considered as the "same" method
978 // (same USR) as the one from the interface.
979 if (const ObjCCategoryDecl *
980 Category = dyn_cast<ObjCCategoryDecl>(Container)) {
981 // Check whether we have a matching method at this category but only if we
982 // are at the super class level.
985 Overridden = Container->getMethod(Method->getSelector(),
986 Method->isInstanceMethod(),
987 /*AllowHidden=*/true))
988 if (Method != Overridden) {
989 // We found an override at this category; there is no need to look
990 // into its protocols.
991 Methods.push_back(Overridden);
995 for (const auto *P : Category->protocols())
996 CollectOverriddenMethodsRecurse(P, Method, Methods, MovedToSuper);
1000 // Check whether we have a matching method at this level.
1001 if (const ObjCMethodDecl *
1002 Overridden = Container->getMethod(Method->getSelector(),
1003 Method->isInstanceMethod(),
1004 /*AllowHidden=*/true))
1005 if (Method != Overridden) {
1006 // We found an override at this level; there is no need to look
1007 // into other protocols or categories.
1008 Methods.push_back(Overridden);
1012 if (const ObjCProtocolDecl *Protocol = dyn_cast<ObjCProtocolDecl>(Container)){
1013 for (const auto *P : Protocol->protocols())
1014 CollectOverriddenMethodsRecurse(P, Method, Methods, MovedToSuper);
1017 if (const ObjCInterfaceDecl *
1018 Interface = dyn_cast<ObjCInterfaceDecl>(Container)) {
1019 for (const auto *P : Interface->protocols())
1020 CollectOverriddenMethodsRecurse(P, Method, Methods, MovedToSuper);
1022 for (const auto *Cat : Interface->known_categories())
1023 CollectOverriddenMethodsRecurse(Cat, Method, Methods, MovedToSuper);
1025 if (const ObjCInterfaceDecl *Super = Interface->getSuperClass())
1026 return CollectOverriddenMethodsRecurse(Super, Method, Methods,
1027 /*MovedToSuper=*/true);
1031 static inline void CollectOverriddenMethods(const ObjCContainerDecl *Container,
1032 const ObjCMethodDecl *Method,
1033 SmallVectorImpl<const ObjCMethodDecl *> &Methods) {
1034 CollectOverriddenMethodsRecurse(Container, Method, Methods,
1035 /*MovedToSuper=*/false);
1038 static void collectOverriddenMethodsSlow(const ObjCMethodDecl *Method,
1039 SmallVectorImpl<const ObjCMethodDecl *> &overridden) {
1040 assert(Method->isOverriding());
1042 if (const ObjCProtocolDecl *
1043 ProtD = dyn_cast<ObjCProtocolDecl>(Method->getDeclContext())) {
1044 CollectOverriddenMethods(ProtD, Method, overridden);
1046 } else if (const ObjCImplDecl *
1047 IMD = dyn_cast<ObjCImplDecl>(Method->getDeclContext())) {
1048 const ObjCInterfaceDecl *ID = IMD->getClassInterface();
1051 // Start searching for overridden methods using the method from the
1052 // interface as starting point.
1053 if (const ObjCMethodDecl *IFaceMeth = ID->getMethod(Method->getSelector(),
1054 Method->isInstanceMethod(),
1055 /*AllowHidden=*/true))
1057 CollectOverriddenMethods(ID, Method, overridden);
1059 } else if (const ObjCCategoryDecl *
1060 CatD = dyn_cast<ObjCCategoryDecl>(Method->getDeclContext())) {
1061 const ObjCInterfaceDecl *ID = CatD->getClassInterface();
1064 // Start searching for overridden methods using the method from the
1065 // interface as starting point.
1066 if (const ObjCMethodDecl *IFaceMeth = ID->getMethod(Method->getSelector(),
1067 Method->isInstanceMethod(),
1068 /*AllowHidden=*/true))
1070 CollectOverriddenMethods(ID, Method, overridden);
1073 CollectOverriddenMethods(
1074 dyn_cast_or_null<ObjCContainerDecl>(Method->getDeclContext()),
1075 Method, overridden);
1079 void ObjCMethodDecl::getOverriddenMethods(
1080 SmallVectorImpl<const ObjCMethodDecl *> &Overridden) const {
1081 const ObjCMethodDecl *Method = this;
1083 if (Method->isRedeclaration()) {
1084 Method = cast<ObjCContainerDecl>(Method->getDeclContext())->
1085 getMethod(Method->getSelector(), Method->isInstanceMethod());
1088 if (Method->isOverriding()) {
1089 collectOverriddenMethodsSlow(Method, Overridden);
1090 assert(!Overridden.empty() &&
1091 "ObjCMethodDecl's overriding bit is not as expected");
1095 const ObjCPropertyDecl *
1096 ObjCMethodDecl::findPropertyDecl(bool CheckOverrides) const {
1097 Selector Sel = getSelector();
1098 unsigned NumArgs = Sel.getNumArgs();
1102 if (!isInstanceMethod())
1105 if (isPropertyAccessor()) {
1106 const ObjCContainerDecl *Container = cast<ObjCContainerDecl>(getParent());
1107 // If container is class extension, find its primary class.
1108 if (const ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(Container))
1109 if (CatDecl->IsClassExtension())
1110 Container = CatDecl->getClassInterface();
1112 bool IsGetter = (NumArgs == 0);
1114 for (const auto *I : Container->properties()) {
1115 Selector NextSel = IsGetter ? I->getGetterName()
1116 : I->getSetterName();
1121 llvm_unreachable("Marked as a property accessor but no property found!");
1124 if (!CheckOverrides)
1127 typedef SmallVector<const ObjCMethodDecl *, 8> OverridesTy;
1128 OverridesTy Overrides;
1129 getOverriddenMethods(Overrides);
1130 for (OverridesTy::const_iterator I = Overrides.begin(), E = Overrides.end();
1132 if (const ObjCPropertyDecl *Prop = (*I)->findPropertyDecl(false))
1139 //===----------------------------------------------------------------------===//
1140 // ObjCInterfaceDecl
1141 //===----------------------------------------------------------------------===//
1143 ObjCInterfaceDecl *ObjCInterfaceDecl::Create(const ASTContext &C,
1145 SourceLocation atLoc,
1147 ObjCInterfaceDecl *PrevDecl,
1148 SourceLocation ClassLoc,
1150 ObjCInterfaceDecl *Result = new (C, DC)
1151 ObjCInterfaceDecl(C, DC, atLoc, Id, ClassLoc, PrevDecl, isInternal);
1152 Result->Data.setInt(!C.getLangOpts().Modules);
1153 C.getObjCInterfaceType(Result, PrevDecl);
1157 ObjCInterfaceDecl *ObjCInterfaceDecl::CreateDeserialized(const ASTContext &C,
1159 ObjCInterfaceDecl *Result = new (C, ID) ObjCInterfaceDecl(C, nullptr,
1164 Result->Data.setInt(!C.getLangOpts().Modules);
1168 ObjCInterfaceDecl::ObjCInterfaceDecl(const ASTContext &C, DeclContext *DC,
1169 SourceLocation AtLoc, IdentifierInfo *Id,
1170 SourceLocation CLoc,
1171 ObjCInterfaceDecl *PrevDecl,
1173 : ObjCContainerDecl(ObjCInterface, DC, Id, CLoc, AtLoc),
1174 redeclarable_base(C), TypeForDecl(nullptr), Data() {
1175 setPreviousDecl(PrevDecl);
1177 // Copy the 'data' pointer over.
1179 Data = PrevDecl->Data;
1181 setImplicit(IsInternal);
1184 void ObjCInterfaceDecl::LoadExternalDefinition() const {
1185 assert(data().ExternallyCompleted && "Class is not externally completed");
1186 data().ExternallyCompleted = false;
1187 getASTContext().getExternalSource()->CompleteType(
1188 const_cast<ObjCInterfaceDecl *>(this));
1191 void ObjCInterfaceDecl::setExternallyCompleted() {
1192 assert(getASTContext().getExternalSource() &&
1193 "Class can't be externally completed without an external source");
1194 assert(hasDefinition() &&
1195 "Forward declarations can't be externally completed");
1196 data().ExternallyCompleted = true;
1199 void ObjCInterfaceDecl::setHasDesignatedInitializers() {
1200 // Check for a complete definition and recover if not so.
1201 if (!isThisDeclarationADefinition())
1203 data().HasDesignatedInitializers = true;
1206 bool ObjCInterfaceDecl::hasDesignatedInitializers() const {
1207 // Check for a complete definition and recover if not so.
1208 if (!isThisDeclarationADefinition())
1210 if (data().ExternallyCompleted)
1211 LoadExternalDefinition();
1213 return data().HasDesignatedInitializers;
1217 ObjCInterfaceDecl::getObjCRuntimeNameAsString() const {
1218 if (ObjCRuntimeNameAttr *ObjCRTName = getAttr<ObjCRuntimeNameAttr>())
1219 return ObjCRTName->getMetadataName();
1225 ObjCImplementationDecl::getObjCRuntimeNameAsString() const {
1226 if (ObjCInterfaceDecl *ID =
1227 const_cast<ObjCImplementationDecl*>(this)->getClassInterface())
1228 return ID->getObjCRuntimeNameAsString();
1233 ObjCImplementationDecl *ObjCInterfaceDecl::getImplementation() const {
1234 if (const ObjCInterfaceDecl *Def = getDefinition()) {
1235 if (data().ExternallyCompleted)
1236 LoadExternalDefinition();
1238 return getASTContext().getObjCImplementation(
1239 const_cast<ObjCInterfaceDecl*>(Def));
1242 // FIXME: Should make sure no callers ever do this.
1246 void ObjCInterfaceDecl::setImplementation(ObjCImplementationDecl *ImplD) {
1247 getASTContext().setObjCImplementation(getDefinition(), ImplD);
1251 struct SynthesizeIvarChunk {
1254 SynthesizeIvarChunk(uint64_t size, ObjCIvarDecl *ivar)
1255 : Size(size), Ivar(ivar) {}
1258 bool operator<(const SynthesizeIvarChunk & LHS,
1259 const SynthesizeIvarChunk &RHS) {
1260 return LHS.Size < RHS.Size;
1264 /// all_declared_ivar_begin - return first ivar declared in this class,
1265 /// its extensions and its implementation. Lazily build the list on first
1268 /// Caveat: The list returned by this method reflects the current
1269 /// state of the parser. The cache will be updated for every ivar
1270 /// added by an extension or the implementation when they are
1272 /// See also ObjCIvarDecl::Create().
1273 ObjCIvarDecl *ObjCInterfaceDecl::all_declared_ivar_begin() {
1274 // FIXME: Should make sure no callers ever do this.
1275 if (!hasDefinition())
1278 ObjCIvarDecl *curIvar = nullptr;
1279 if (!data().IvarList) {
1280 if (!ivar_empty()) {
1281 ObjCInterfaceDecl::ivar_iterator I = ivar_begin(), E = ivar_end();
1282 data().IvarList = *I; ++I;
1283 for (curIvar = data().IvarList; I != E; curIvar = *I, ++I)
1284 curIvar->setNextIvar(*I);
1287 for (const auto *Ext : known_extensions()) {
1288 if (!Ext->ivar_empty()) {
1289 ObjCCategoryDecl::ivar_iterator
1290 I = Ext->ivar_begin(),
1291 E = Ext->ivar_end();
1292 if (!data().IvarList) {
1293 data().IvarList = *I; ++I;
1294 curIvar = data().IvarList;
1296 for ( ;I != E; curIvar = *I, ++I)
1297 curIvar->setNextIvar(*I);
1300 data().IvarListMissingImplementation = true;
1303 // cached and complete!
1304 if (!data().IvarListMissingImplementation)
1305 return data().IvarList;
1307 if (ObjCImplementationDecl *ImplDecl = getImplementation()) {
1308 data().IvarListMissingImplementation = false;
1309 if (!ImplDecl->ivar_empty()) {
1310 SmallVector<SynthesizeIvarChunk, 16> layout;
1311 for (auto *IV : ImplDecl->ivars()) {
1312 if (IV->getSynthesize() && !IV->isInvalidDecl()) {
1313 layout.push_back(SynthesizeIvarChunk(
1314 IV->getASTContext().getTypeSize(IV->getType()), IV));
1317 if (!data().IvarList)
1318 data().IvarList = IV;
1320 curIvar->setNextIvar(IV);
1324 if (!layout.empty()) {
1325 // Order synthesized ivars by their size.
1326 std::stable_sort(layout.begin(), layout.end());
1327 unsigned Ix = 0, EIx = layout.size();
1328 if (!data().IvarList) {
1329 data().IvarList = layout[0].Ivar; Ix++;
1330 curIvar = data().IvarList;
1332 for ( ; Ix != EIx; curIvar = layout[Ix].Ivar, Ix++)
1333 curIvar->setNextIvar(layout[Ix].Ivar);
1337 return data().IvarList;
1340 /// FindCategoryDeclaration - Finds category declaration in the list of
1341 /// categories for this class and returns it. Name of the category is passed
1342 /// in 'CategoryId'. If category not found, return 0;
1345 ObjCInterfaceDecl::FindCategoryDeclaration(IdentifierInfo *CategoryId) const {
1346 // FIXME: Should make sure no callers ever do this.
1347 if (!hasDefinition())
1350 if (data().ExternallyCompleted)
1351 LoadExternalDefinition();
1353 for (auto *Cat : visible_categories())
1354 if (Cat->getIdentifier() == CategoryId)
1361 ObjCInterfaceDecl::getCategoryInstanceMethod(Selector Sel) const {
1362 for (const auto *Cat : visible_categories()) {
1363 if (ObjCCategoryImplDecl *Impl = Cat->getImplementation())
1364 if (ObjCMethodDecl *MD = Impl->getInstanceMethod(Sel))
1371 ObjCMethodDecl *ObjCInterfaceDecl::getCategoryClassMethod(Selector Sel) const {
1372 for (const auto *Cat : visible_categories()) {
1373 if (ObjCCategoryImplDecl *Impl = Cat->getImplementation())
1374 if (ObjCMethodDecl *MD = Impl->getClassMethod(Sel))
1381 /// ClassImplementsProtocol - Checks that 'lProto' protocol
1382 /// has been implemented in IDecl class, its super class or categories (if
1383 /// lookupCategory is true).
1384 bool ObjCInterfaceDecl::ClassImplementsProtocol(ObjCProtocolDecl *lProto,
1385 bool lookupCategory,
1386 bool RHSIsQualifiedID) {
1387 if (!hasDefinition())
1390 ObjCInterfaceDecl *IDecl = this;
1391 // 1st, look up the class.
1392 for (auto *PI : IDecl->protocols()){
1393 if (getASTContext().ProtocolCompatibleWithProtocol(lProto, PI))
1395 // This is dubious and is added to be compatible with gcc. In gcc, it is
1396 // also allowed assigning a protocol-qualified 'id' type to a LHS object
1397 // when protocol in qualified LHS is in list of protocols in the rhs 'id'
1398 // object. This IMO, should be a bug.
1399 // FIXME: Treat this as an extension, and flag this as an error when GCC
1400 // extensions are not enabled.
1401 if (RHSIsQualifiedID &&
1402 getASTContext().ProtocolCompatibleWithProtocol(PI, lProto))
1406 // 2nd, look up the category.
1408 for (const auto *Cat : visible_categories()) {
1409 for (auto *PI : Cat->protocols())
1410 if (getASTContext().ProtocolCompatibleWithProtocol(lProto, PI))
1414 // 3rd, look up the super class(s)
1415 if (IDecl->getSuperClass())
1417 IDecl->getSuperClass()->ClassImplementsProtocol(lProto, lookupCategory,
1423 //===----------------------------------------------------------------------===//
1425 //===----------------------------------------------------------------------===//
1427 void ObjCIvarDecl::anchor() { }
1429 ObjCIvarDecl *ObjCIvarDecl::Create(ASTContext &C, ObjCContainerDecl *DC,
1430 SourceLocation StartLoc,
1431 SourceLocation IdLoc, IdentifierInfo *Id,
1432 QualType T, TypeSourceInfo *TInfo,
1433 AccessControl ac, Expr *BW,
1436 // Ivar's can only appear in interfaces, implementations (via synthesized
1437 // properties), and class extensions (via direct declaration, or synthesized
1440 // FIXME: This should really be asserting this:
1441 // (isa<ObjCCategoryDecl>(DC) &&
1442 // cast<ObjCCategoryDecl>(DC)->IsClassExtension()))
1443 // but unfortunately we sometimes place ivars into non-class extension
1444 // categories on error. This breaks an AST invariant, and should not be
1446 assert((isa<ObjCInterfaceDecl>(DC) || isa<ObjCImplementationDecl>(DC) ||
1447 isa<ObjCCategoryDecl>(DC)) &&
1448 "Invalid ivar decl context!");
1449 // Once a new ivar is created in any of class/class-extension/implementation
1450 // decl contexts, the previously built IvarList must be rebuilt.
1451 ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(DC);
1453 if (ObjCImplementationDecl *IM = dyn_cast<ObjCImplementationDecl>(DC))
1454 ID = IM->getClassInterface();
1456 ID = cast<ObjCCategoryDecl>(DC)->getClassInterface();
1458 ID->setIvarList(nullptr);
1461 return new (C, DC) ObjCIvarDecl(DC, StartLoc, IdLoc, Id, T, TInfo, ac, BW,
1465 ObjCIvarDecl *ObjCIvarDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
1466 return new (C, ID) ObjCIvarDecl(nullptr, SourceLocation(), SourceLocation(),
1467 nullptr, QualType(), nullptr,
1468 ObjCIvarDecl::None, nullptr, false);
1471 const ObjCInterfaceDecl *ObjCIvarDecl::getContainingInterface() const {
1472 const ObjCContainerDecl *DC = cast<ObjCContainerDecl>(getDeclContext());
1474 switch (DC->getKind()) {
1476 case ObjCCategoryImpl:
1478 llvm_unreachable("invalid ivar container!");
1480 // Ivars can only appear in class extension categories.
1481 case ObjCCategory: {
1482 const ObjCCategoryDecl *CD = cast<ObjCCategoryDecl>(DC);
1483 assert(CD->IsClassExtension() && "invalid container for ivar!");
1484 return CD->getClassInterface();
1487 case ObjCImplementation:
1488 return cast<ObjCImplementationDecl>(DC)->getClassInterface();
1491 return cast<ObjCInterfaceDecl>(DC);
1495 //===----------------------------------------------------------------------===//
1496 // ObjCAtDefsFieldDecl
1497 //===----------------------------------------------------------------------===//
1499 void ObjCAtDefsFieldDecl::anchor() { }
1502 *ObjCAtDefsFieldDecl::Create(ASTContext &C, DeclContext *DC,
1503 SourceLocation StartLoc, SourceLocation IdLoc,
1504 IdentifierInfo *Id, QualType T, Expr *BW) {
1505 return new (C, DC) ObjCAtDefsFieldDecl(DC, StartLoc, IdLoc, Id, T, BW);
1508 ObjCAtDefsFieldDecl *ObjCAtDefsFieldDecl::CreateDeserialized(ASTContext &C,
1510 return new (C, ID) ObjCAtDefsFieldDecl(nullptr, SourceLocation(),
1511 SourceLocation(), nullptr, QualType(),
1515 //===----------------------------------------------------------------------===//
1517 //===----------------------------------------------------------------------===//
1519 void ObjCProtocolDecl::anchor() { }
1521 ObjCProtocolDecl::ObjCProtocolDecl(ASTContext &C, DeclContext *DC,
1522 IdentifierInfo *Id, SourceLocation nameLoc,
1523 SourceLocation atStartLoc,
1524 ObjCProtocolDecl *PrevDecl)
1525 : ObjCContainerDecl(ObjCProtocol, DC, Id, nameLoc, atStartLoc),
1526 redeclarable_base(C), Data() {
1527 setPreviousDecl(PrevDecl);
1529 Data = PrevDecl->Data;
1532 ObjCProtocolDecl *ObjCProtocolDecl::Create(ASTContext &C, DeclContext *DC,
1534 SourceLocation nameLoc,
1535 SourceLocation atStartLoc,
1536 ObjCProtocolDecl *PrevDecl) {
1537 ObjCProtocolDecl *Result =
1538 new (C, DC) ObjCProtocolDecl(C, DC, Id, nameLoc, atStartLoc, PrevDecl);
1539 Result->Data.setInt(!C.getLangOpts().Modules);
1543 ObjCProtocolDecl *ObjCProtocolDecl::CreateDeserialized(ASTContext &C,
1545 ObjCProtocolDecl *Result =
1546 new (C, ID) ObjCProtocolDecl(C, nullptr, nullptr, SourceLocation(),
1547 SourceLocation(), nullptr);
1548 Result->Data.setInt(!C.getLangOpts().Modules);
1552 ObjCProtocolDecl *ObjCProtocolDecl::lookupProtocolNamed(IdentifierInfo *Name) {
1553 ObjCProtocolDecl *PDecl = this;
1555 if (Name == getIdentifier())
1558 for (auto *I : protocols())
1559 if ((PDecl = I->lookupProtocolNamed(Name)))
1565 // lookupMethod - Lookup a instance/class method in the protocol and protocols
1567 ObjCMethodDecl *ObjCProtocolDecl::lookupMethod(Selector Sel,
1568 bool isInstance) const {
1569 ObjCMethodDecl *MethodDecl = nullptr;
1571 // If there is no definition or the definition is hidden, we don't find
1573 const ObjCProtocolDecl *Def = getDefinition();
1574 if (!Def || Def->isHidden())
1577 if ((MethodDecl = getMethod(Sel, isInstance)))
1580 for (const auto *I : protocols())
1581 if ((MethodDecl = I->lookupMethod(Sel, isInstance)))
1586 void ObjCProtocolDecl::allocateDefinitionData() {
1587 assert(!Data.getPointer() && "Protocol already has a definition!");
1588 Data.setPointer(new (getASTContext()) DefinitionData);
1589 Data.getPointer()->Definition = this;
1592 void ObjCProtocolDecl::startDefinition() {
1593 allocateDefinitionData();
1595 // Update all of the declarations with a pointer to the definition.
1596 for (auto RD : redecls())
1597 RD->Data = this->Data;
1600 void ObjCProtocolDecl::collectPropertiesToImplement(PropertyMap &PM,
1601 PropertyDeclOrder &PO) const {
1603 if (const ObjCProtocolDecl *PDecl = getDefinition()) {
1604 for (auto *Prop : PDecl->properties()) {
1605 // Insert into PM if not there already.
1606 PM.insert(std::make_pair(Prop->getIdentifier(), Prop));
1609 // Scan through protocol's protocols.
1610 for (const auto *PI : PDecl->protocols())
1611 PI->collectPropertiesToImplement(PM, PO);
1616 void ObjCProtocolDecl::collectInheritedProtocolProperties(
1617 const ObjCPropertyDecl *Property,
1618 ProtocolPropertyMap &PM) const {
1619 if (const ObjCProtocolDecl *PDecl = getDefinition()) {
1620 bool MatchFound = false;
1621 for (auto *Prop : PDecl->properties()) {
1622 if (Prop == Property)
1624 if (Prop->getIdentifier() == Property->getIdentifier()) {
1630 // Scan through protocol's protocols which did not have a matching property.
1632 for (const auto *PI : PDecl->protocols())
1633 PI->collectInheritedProtocolProperties(Property, PM);
1638 ObjCProtocolDecl::getObjCRuntimeNameAsString() const {
1639 if (ObjCRuntimeNameAttr *ObjCRTName = getAttr<ObjCRuntimeNameAttr>())
1640 return ObjCRTName->getMetadataName();
1645 //===----------------------------------------------------------------------===//
1647 //===----------------------------------------------------------------------===//
1649 void ObjCCategoryDecl::anchor() { }
1651 ObjCCategoryDecl *ObjCCategoryDecl::Create(ASTContext &C, DeclContext *DC,
1652 SourceLocation AtLoc,
1653 SourceLocation ClassNameLoc,
1654 SourceLocation CategoryNameLoc,
1656 ObjCInterfaceDecl *IDecl,
1657 SourceLocation IvarLBraceLoc,
1658 SourceLocation IvarRBraceLoc) {
1659 ObjCCategoryDecl *CatDecl =
1660 new (C, DC) ObjCCategoryDecl(DC, AtLoc, ClassNameLoc, CategoryNameLoc, Id,
1661 IDecl, IvarLBraceLoc, IvarRBraceLoc);
1663 // Link this category into its class's category list.
1664 CatDecl->NextClassCategory = IDecl->getCategoryListRaw();
1665 if (IDecl->hasDefinition()) {
1666 IDecl->setCategoryListRaw(CatDecl);
1667 if (ASTMutationListener *L = C.getASTMutationListener())
1668 L->AddedObjCCategoryToInterface(CatDecl, IDecl);
1675 ObjCCategoryDecl *ObjCCategoryDecl::CreateDeserialized(ASTContext &C,
1677 return new (C, ID) ObjCCategoryDecl(nullptr, SourceLocation(),
1678 SourceLocation(), SourceLocation(),
1682 ObjCCategoryImplDecl *ObjCCategoryDecl::getImplementation() const {
1683 return getASTContext().getObjCImplementation(
1684 const_cast<ObjCCategoryDecl*>(this));
1687 void ObjCCategoryDecl::setImplementation(ObjCCategoryImplDecl *ImplD) {
1688 getASTContext().setObjCImplementation(this, ImplD);
1692 //===----------------------------------------------------------------------===//
1693 // ObjCCategoryImplDecl
1694 //===----------------------------------------------------------------------===//
1696 void ObjCCategoryImplDecl::anchor() { }
1698 ObjCCategoryImplDecl *
1699 ObjCCategoryImplDecl::Create(ASTContext &C, DeclContext *DC,
1701 ObjCInterfaceDecl *ClassInterface,
1702 SourceLocation nameLoc,
1703 SourceLocation atStartLoc,
1704 SourceLocation CategoryNameLoc) {
1705 if (ClassInterface && ClassInterface->hasDefinition())
1706 ClassInterface = ClassInterface->getDefinition();
1707 return new (C, DC) ObjCCategoryImplDecl(DC, Id, ClassInterface, nameLoc,
1708 atStartLoc, CategoryNameLoc);
1711 ObjCCategoryImplDecl *ObjCCategoryImplDecl::CreateDeserialized(ASTContext &C,
1713 return new (C, ID) ObjCCategoryImplDecl(nullptr, nullptr, nullptr,
1714 SourceLocation(), SourceLocation(),
1718 ObjCCategoryDecl *ObjCCategoryImplDecl::getCategoryDecl() const {
1719 // The class interface might be NULL if we are working with invalid code.
1720 if (const ObjCInterfaceDecl *ID = getClassInterface())
1721 return ID->FindCategoryDeclaration(getIdentifier());
1726 void ObjCImplDecl::anchor() { }
1728 void ObjCImplDecl::addPropertyImplementation(ObjCPropertyImplDecl *property) {
1729 // FIXME: The context should be correct before we get here.
1730 property->setLexicalDeclContext(this);
1734 void ObjCImplDecl::setClassInterface(ObjCInterfaceDecl *IFace) {
1735 ASTContext &Ctx = getASTContext();
1737 if (ObjCImplementationDecl *ImplD
1738 = dyn_cast_or_null<ObjCImplementationDecl>(this)) {
1740 Ctx.setObjCImplementation(IFace, ImplD);
1742 } else if (ObjCCategoryImplDecl *ImplD =
1743 dyn_cast_or_null<ObjCCategoryImplDecl>(this)) {
1744 if (ObjCCategoryDecl *CD = IFace->FindCategoryDeclaration(getIdentifier()))
1745 Ctx.setObjCImplementation(CD, ImplD);
1748 ClassInterface = IFace;
1751 /// FindPropertyImplIvarDecl - This method lookup the ivar in the list of
1752 /// properties implemented in this \@implementation block and returns
1753 /// the implemented property that uses it.
1755 ObjCPropertyImplDecl *ObjCImplDecl::
1756 FindPropertyImplIvarDecl(IdentifierInfo *ivarId) const {
1757 for (auto *PID : property_impls())
1758 if (PID->getPropertyIvarDecl() &&
1759 PID->getPropertyIvarDecl()->getIdentifier() == ivarId)
1764 /// FindPropertyImplDecl - This method looks up a previous ObjCPropertyImplDecl
1765 /// added to the list of those properties \@synthesized/\@dynamic in this
1766 /// category \@implementation block.
1768 ObjCPropertyImplDecl *ObjCImplDecl::
1769 FindPropertyImplDecl(IdentifierInfo *Id) const {
1770 for (auto *PID : property_impls())
1771 if (PID->getPropertyDecl()->getIdentifier() == Id)
1776 raw_ostream &clang::operator<<(raw_ostream &OS,
1777 const ObjCCategoryImplDecl &CID) {
1778 OS << CID.getName();
1782 //===----------------------------------------------------------------------===//
1783 // ObjCImplementationDecl
1784 //===----------------------------------------------------------------------===//
1786 void ObjCImplementationDecl::anchor() { }
1788 ObjCImplementationDecl *
1789 ObjCImplementationDecl::Create(ASTContext &C, DeclContext *DC,
1790 ObjCInterfaceDecl *ClassInterface,
1791 ObjCInterfaceDecl *SuperDecl,
1792 SourceLocation nameLoc,
1793 SourceLocation atStartLoc,
1794 SourceLocation superLoc,
1795 SourceLocation IvarLBraceLoc,
1796 SourceLocation IvarRBraceLoc) {
1797 if (ClassInterface && ClassInterface->hasDefinition())
1798 ClassInterface = ClassInterface->getDefinition();
1799 return new (C, DC) ObjCImplementationDecl(DC, ClassInterface, SuperDecl,
1800 nameLoc, atStartLoc, superLoc,
1801 IvarLBraceLoc, IvarRBraceLoc);
1804 ObjCImplementationDecl *
1805 ObjCImplementationDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
1806 return new (C, ID) ObjCImplementationDecl(nullptr, nullptr, nullptr,
1807 SourceLocation(), SourceLocation());
1810 void ObjCImplementationDecl::setIvarInitializers(ASTContext &C,
1811 CXXCtorInitializer ** initializers,
1812 unsigned numInitializers) {
1813 if (numInitializers > 0) {
1814 NumIvarInitializers = numInitializers;
1815 CXXCtorInitializer **ivarInitializers =
1816 new (C) CXXCtorInitializer*[NumIvarInitializers];
1817 memcpy(ivarInitializers, initializers,
1818 numInitializers * sizeof(CXXCtorInitializer*));
1819 IvarInitializers = ivarInitializers;
1823 ObjCImplementationDecl::init_const_iterator
1824 ObjCImplementationDecl::init_begin() const {
1825 return IvarInitializers.get(getASTContext().getExternalSource());
1828 raw_ostream &clang::operator<<(raw_ostream &OS,
1829 const ObjCImplementationDecl &ID) {
1834 //===----------------------------------------------------------------------===//
1835 // ObjCCompatibleAliasDecl
1836 //===----------------------------------------------------------------------===//
1838 void ObjCCompatibleAliasDecl::anchor() { }
1840 ObjCCompatibleAliasDecl *
1841 ObjCCompatibleAliasDecl::Create(ASTContext &C, DeclContext *DC,
1844 ObjCInterfaceDecl* AliasedClass) {
1845 return new (C, DC) ObjCCompatibleAliasDecl(DC, L, Id, AliasedClass);
1848 ObjCCompatibleAliasDecl *
1849 ObjCCompatibleAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
1850 return new (C, ID) ObjCCompatibleAliasDecl(nullptr, SourceLocation(),
1854 //===----------------------------------------------------------------------===//
1856 //===----------------------------------------------------------------------===//
1858 void ObjCPropertyDecl::anchor() { }
1860 ObjCPropertyDecl *ObjCPropertyDecl::Create(ASTContext &C, DeclContext *DC,
1863 SourceLocation AtLoc,
1864 SourceLocation LParenLoc,
1866 PropertyControl propControl) {
1867 return new (C, DC) ObjCPropertyDecl(DC, L, Id, AtLoc, LParenLoc, T);
1870 ObjCPropertyDecl *ObjCPropertyDecl::CreateDeserialized(ASTContext &C,
1872 return new (C, ID) ObjCPropertyDecl(nullptr, SourceLocation(), nullptr,
1873 SourceLocation(), SourceLocation(),
1877 //===----------------------------------------------------------------------===//
1878 // ObjCPropertyImplDecl
1879 //===----------------------------------------------------------------------===//
1881 ObjCPropertyImplDecl *ObjCPropertyImplDecl::Create(ASTContext &C,
1883 SourceLocation atLoc,
1885 ObjCPropertyDecl *property,
1888 SourceLocation ivarLoc) {
1889 return new (C, DC) ObjCPropertyImplDecl(DC, atLoc, L, property, PK, ivar,
1893 ObjCPropertyImplDecl *ObjCPropertyImplDecl::CreateDeserialized(ASTContext &C,
1895 return new (C, ID) ObjCPropertyImplDecl(nullptr, SourceLocation(),
1896 SourceLocation(), nullptr, Dynamic,
1897 nullptr, SourceLocation());
1900 SourceRange ObjCPropertyImplDecl::getSourceRange() const {
1901 SourceLocation EndLoc = getLocation();
1902 if (IvarLoc.isValid())
1905 return SourceRange(AtLoc, EndLoc);