Bug Summary

File:tools/clang/lib/AST/DeclObjC.cpp
Warning:line 1603, column 11
Called C++ object pointer is null

Annotated Source Code

1//===--- DeclObjC.cpp - ObjC Declaration AST Node Implementation ----------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the Objective-C related Decl classes.
11//
12//===----------------------------------------------------------------------===//
13
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"
21using namespace clang;
22
23//===----------------------------------------------------------------------===//
24// ObjCListBase
25//===----------------------------------------------------------------------===//
26
27void ObjCListBase::set(void *const* InList, unsigned Elts, ASTContext &Ctx) {
28 List = nullptr;
29 if (Elts == 0) return; // Setting to an empty list is a noop.
30
31
32 List = new (Ctx) void*[Elts];
33 NumElts = Elts;
34 memcpy(List, InList, sizeof(void*)*Elts);
35}
36
37void ObjCProtocolList::set(ObjCProtocolDecl* const* InList, unsigned Elts,
38 const SourceLocation *Locs, ASTContext &Ctx) {
39 if (Elts == 0)
40 return;
41
42 Locations = new (Ctx) SourceLocation[Elts];
43 memcpy(Locations, Locs, sizeof(SourceLocation) * Elts);
44 set(InList, Elts, Ctx);
45}
46
47//===----------------------------------------------------------------------===//
48// ObjCInterfaceDecl
49//===----------------------------------------------------------------------===//
50
51void ObjCContainerDecl::anchor() { }
52
53/// getIvarDecl - This method looks up an ivar in this ContextDecl.
54///
55ObjCIvarDecl *
56ObjCContainerDecl::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))
61 return ivar;
62 }
63 return nullptr;
64}
65
66// Get the local instance/class method declared in this interface.
67ObjCMethodDecl *
68ObjCContainerDecl::getMethod(Selector Sel, bool isInstance,
69 bool AllowHidden) const {
70 // If this context is a hidden protocol definition, don't find any
71 // methods there.
72 if (const ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(this)) {
73 if (const ObjCProtocolDecl *Def = Proto->getDefinition())
74 if (Def->isHidden() && !AllowHidden)
75 return nullptr;
76 }
77
78 // Since instance & class methods can have the same name, the loop below
79 // ensures we get the correct method.
80 //
81 // @interface Whatever
82 // - (int) class_method;
83 // + (float) class_method;
84 // @end
85 //
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)
91 return MD;
92 }
93 return nullptr;
94}
95
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.
101bool 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())
109 return true;
110 }
111
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())
118 return true;
119 if (Cat->IsClassExtension())
120 continue;
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)
128 return true;
129 break;
130 }
131 }
132
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))
136 return true;
137
138 // And in its super class.
139 ObjCInterfaceDecl *OSC = ID->getSuperClass();
140 while (OSC) {
141 if (OSC->HasUserDeclaredSetterMethod(Property))
142 return true;
143 OSC = OSC->getSuperClass();
144 }
145 }
146 if (const ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(this))
147 for (const auto *PI : PD->protocols())
148 if (PI->HasUserDeclaredSetterMethod(Property))
149 return true;
150 return false;
151}
152
153ObjCPropertyDecl *
154ObjCPropertyDecl::findPropertyDecl(const DeclContext *DC,
155 const IdentifierInfo *propertyID,
156 ObjCPropertyQueryKind queryKind) {
157 // If this context is a hidden protocol definition, don't find any
158 // property.
159 if (const ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(DC)) {
160 if (const ObjCProtocolDecl *Def = Proto->getDefinition())
161 if (Def->isHidden())
162 return nullptr;
163 }
164
165 // If context is class, then lookup property in its visible extensions.
166 // This comes before property is looked up in primary class.
167 if (auto *IDecl = dyn_cast<ObjCInterfaceDecl>(DC)) {
168 for (const auto *Ext : IDecl->visible_extensions())
169 if (ObjCPropertyDecl *PD = ObjCPropertyDecl::findPropertyDecl(Ext,
170 propertyID,
171 queryKind))
172 return PD;
173 }
174
175 DeclContext::lookup_result R = DC->lookup(propertyID);
176 ObjCPropertyDecl *classProp = nullptr;
177 for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E;
178 ++I)
179 if (ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(*I)) {
180 // If queryKind is unknown, we return the instance property if one
181 // exists; otherwise we return the class property.
182 if ((queryKind == ObjCPropertyQueryKind::OBJC_PR_query_unknown &&
183 !PD->isClassProperty()) ||
184 (queryKind == ObjCPropertyQueryKind::OBJC_PR_query_class &&
185 PD->isClassProperty()) ||
186 (queryKind == ObjCPropertyQueryKind::OBJC_PR_query_instance &&
187 !PD->isClassProperty()))
188 return PD;
189
190 if (PD->isClassProperty())
191 classProp = PD;
192 }
193
194 if (queryKind == ObjCPropertyQueryKind::OBJC_PR_query_unknown)
195 // We can't find the instance property, return the class property.
196 return classProp;
197
198 return nullptr;
199}
200
201IdentifierInfo *
202ObjCPropertyDecl::getDefaultSynthIvarName(ASTContext &Ctx) const {
203 SmallString<128> ivarName;
204 {
205 llvm::raw_svector_ostream os(ivarName);
206 os << '_' << getIdentifier()->getName();
207 }
208 return &Ctx.Idents.get(ivarName.str());
209}
210
211/// FindPropertyDeclaration - Finds declaration of the property given its name
212/// in 'PropertyId' and returns it. It returns 0, if not found.
213ObjCPropertyDecl *ObjCContainerDecl::FindPropertyDeclaration(
214 const IdentifierInfo *PropertyId,
215 ObjCPropertyQueryKind QueryKind) const {
216 // Don't find properties within hidden protocol definitions.
217 if (const ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(this)) {
218 if (const ObjCProtocolDecl *Def = Proto->getDefinition())
219 if (Def->isHidden())
220 return nullptr;
221 }
222
223 // Search the extensions of a class first; they override what's in
224 // the class itself.
225 if (const auto *ClassDecl = dyn_cast<ObjCInterfaceDecl>(this)) {
226 for (const auto *Ext : ClassDecl->visible_extensions()) {
227 if (auto *P = Ext->FindPropertyDeclaration(PropertyId, QueryKind))
228 return P;
229 }
230 }
231
232 if (ObjCPropertyDecl *PD =
233 ObjCPropertyDecl::findPropertyDecl(cast<DeclContext>(this), PropertyId,
234 QueryKind))
235 return PD;
236
237 switch (getKind()) {
238 default:
239 break;
240 case Decl::ObjCProtocol: {
241 const ObjCProtocolDecl *PID = cast<ObjCProtocolDecl>(this);
242 for (const auto *I : PID->protocols())
243 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId,
244 QueryKind))
245 return P;
246 break;
247 }
248 case Decl::ObjCInterface: {
249 const ObjCInterfaceDecl *OID = cast<ObjCInterfaceDecl>(this);
250 // Look through categories (but not extensions; they were handled above).
251 for (const auto *Cat : OID->visible_categories()) {
252 if (!Cat->IsClassExtension())
253 if (ObjCPropertyDecl *P = Cat->FindPropertyDeclaration(
254 PropertyId, QueryKind))
255 return P;
256 }
257
258 // Look through protocols.
259 for (const auto *I : OID->all_referenced_protocols())
260 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId,
261 QueryKind))
262 return P;
263
264 // Finally, check the super class.
265 if (const ObjCInterfaceDecl *superClass = OID->getSuperClass())
266 return superClass->FindPropertyDeclaration(PropertyId, QueryKind);
267 break;
268 }
269 case Decl::ObjCCategory: {
270 const ObjCCategoryDecl *OCD = cast<ObjCCategoryDecl>(this);
271 // Look through protocols.
272 if (!OCD->IsClassExtension())
273 for (const auto *I : OCD->protocols())
274 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId,
275 QueryKind))
276 return P;
277 break;
278 }
279 }
280 return nullptr;
281}
282
283void ObjCInterfaceDecl::anchor() { }
284
285ObjCTypeParamList *ObjCInterfaceDecl::getTypeParamList() const {
286 // If this particular declaration has a type parameter list, return it.
287 if (ObjCTypeParamList *written = getTypeParamListAsWritten())
288 return written;
289
290 // If there is a definition, return its type parameter list.
291 if (const ObjCInterfaceDecl *def = getDefinition())
292 return def->getTypeParamListAsWritten();
293
294 // Otherwise, look at previous declarations to determine whether any
295 // of them has a type parameter list, skipping over those
296 // declarations that do not.
297 for (auto decl = getMostRecentDecl(); decl; decl = decl->getPreviousDecl()) {
298 if (ObjCTypeParamList *written = decl->getTypeParamListAsWritten())
299 return written;
300 }
301
302 return nullptr;
303}
304
305void ObjCInterfaceDecl::setTypeParamList(ObjCTypeParamList *TPL) {
306 TypeParamList = TPL;
307 if (!TPL)
308 return;
309 // Set the declaration context of each of the type parameters.
310 for (auto typeParam : *TypeParamList)
311 typeParam->setDeclContext(this);
312}
313
314ObjCInterfaceDecl *ObjCInterfaceDecl::getSuperClass() const {
315 // FIXME: Should make sure no callers ever do this.
316 if (!hasDefinition())
317 return nullptr;
318
319 if (data().ExternallyCompleted)
320 LoadExternalDefinition();
321
322 if (const ObjCObjectType *superType = getSuperClassType()) {
323 if (ObjCInterfaceDecl *superDecl = superType->getInterface()) {
324 if (ObjCInterfaceDecl *superDef = superDecl->getDefinition())
325 return superDef;
326
327 return superDecl;
328 }
329 }
330
331 return nullptr;
332}
333
334SourceLocation ObjCInterfaceDecl::getSuperClassLoc() const {
335 if (TypeSourceInfo *superTInfo = getSuperClassTInfo())
336 return superTInfo->getTypeLoc().getLocStart();
337
338 return SourceLocation();
339}
340
341/// FindPropertyVisibleInPrimaryClass - Finds declaration of the property
342/// with name 'PropertyId' in the primary class; including those in protocols
343/// (direct or indirect) used by the primary class.
344///
345ObjCPropertyDecl *
346ObjCInterfaceDecl::FindPropertyVisibleInPrimaryClass(
347 IdentifierInfo *PropertyId,
348 ObjCPropertyQueryKind QueryKind) const {
349 // FIXME: Should make sure no callers ever do this.
350 if (!hasDefinition())
351 return nullptr;
352
353 if (data().ExternallyCompleted)
354 LoadExternalDefinition();
355
356 if (ObjCPropertyDecl *PD =
357 ObjCPropertyDecl::findPropertyDecl(cast<DeclContext>(this), PropertyId,
358 QueryKind))
359 return PD;
360
361 // Look through protocols.
362 for (const auto *I : all_referenced_protocols())
363 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId,
364 QueryKind))
365 return P;
366
367 return nullptr;
368}
369
370void ObjCInterfaceDecl::collectPropertiesToImplement(PropertyMap &PM,
371 PropertyDeclOrder &PO) const {
372 for (auto *Prop : properties()) {
373 PM[std::make_pair(Prop->getIdentifier(), Prop->isClassProperty())] = Prop;
374 PO.push_back(Prop);
375 }
376 for (const auto *Ext : known_extensions()) {
377 const ObjCCategoryDecl *ClassExt = Ext;
378 for (auto *Prop : ClassExt->properties()) {
379 PM[std::make_pair(Prop->getIdentifier(), Prop->isClassProperty())] = Prop;
380 PO.push_back(Prop);
381 }
382 }
383 for (const auto *PI : all_referenced_protocols())
384 PI->collectPropertiesToImplement(PM, PO);
385 // Note, the properties declared only in class extensions are still copied
386 // into the main @interface's property list, and therefore we don't
387 // explicitly, have to search class extension properties.
388}
389
390bool ObjCInterfaceDecl::isArcWeakrefUnavailable() const {
391 const ObjCInterfaceDecl *Class = this;
392 while (Class) {
393 if (Class->hasAttr<ArcWeakrefUnavailableAttr>())
394 return true;
395 Class = Class->getSuperClass();
396 }
397 return false;
398}
399
400const ObjCInterfaceDecl *ObjCInterfaceDecl::isObjCRequiresPropertyDefs() const {
401 const ObjCInterfaceDecl *Class = this;
402 while (Class) {
403 if (Class->hasAttr<ObjCRequiresPropertyDefsAttr>())
404 return Class;
405 Class = Class->getSuperClass();
406 }
407 return nullptr;
408}
409
410void ObjCInterfaceDecl::mergeClassExtensionProtocolList(
411 ObjCProtocolDecl *const* ExtList, unsigned ExtNum,
412 ASTContext &C)
413{
414 if (data().ExternallyCompleted)
415 LoadExternalDefinition();
416
417 if (data().AllReferencedProtocols.empty() &&
418 data().ReferencedProtocols.empty()) {
419 data().AllReferencedProtocols.set(ExtList, ExtNum, C);
420 return;
421 }
422
423 // Check for duplicate protocol in class's protocol list.
424 // This is O(n*m). But it is extremely rare and number of protocols in
425 // class or its extension are very few.
426 SmallVector<ObjCProtocolDecl*, 8> ProtocolRefs;
427 for (unsigned i = 0; i < ExtNum; i++) {
428 bool protocolExists = false;
429 ObjCProtocolDecl *ProtoInExtension = ExtList[i];
430 for (auto *Proto : all_referenced_protocols()) {
431 if (C.ProtocolCompatibleWithProtocol(ProtoInExtension, Proto)) {
432 protocolExists = true;
433 break;
434 }
435 }
436 // Do we want to warn on a protocol in extension class which
437 // already exist in the class? Probably not.
438 if (!protocolExists)
439 ProtocolRefs.push_back(ProtoInExtension);
440 }
441
442 if (ProtocolRefs.empty())
443 return;
444
445 // Merge ProtocolRefs into class's protocol list;
446 ProtocolRefs.append(all_referenced_protocol_begin(),
447 all_referenced_protocol_end());
448
449 data().AllReferencedProtocols.set(ProtocolRefs.data(), ProtocolRefs.size(),C);
450}
451
452const ObjCInterfaceDecl *
453ObjCInterfaceDecl::findInterfaceWithDesignatedInitializers() const {
454 const ObjCInterfaceDecl *IFace = this;
455 while (IFace) {
456 if (IFace->hasDesignatedInitializers())
457 return IFace;
458 if (!IFace->inheritsDesignatedInitializers())
459 break;
460 IFace = IFace->getSuperClass();
461 }
462 return nullptr;
463}
464
465static bool isIntroducingInitializers(const ObjCInterfaceDecl *D) {
466 for (const auto *MD : D->instance_methods()) {
467 if (MD->getMethodFamily() == OMF_init && !MD->isOverriding())
468 return true;
469 }
470 for (const auto *Ext : D->visible_extensions()) {
471 for (const auto *MD : Ext->instance_methods()) {
472 if (MD->getMethodFamily() == OMF_init && !MD->isOverriding())
473 return true;
474 }
475 }
476 if (const auto *ImplD = D->getImplementation()) {
477 for (const auto *MD : ImplD->instance_methods()) {
478 if (MD->getMethodFamily() == OMF_init && !MD->isOverriding())
479 return true;
480 }
481 }
482 return false;
483}
484
485bool ObjCInterfaceDecl::inheritsDesignatedInitializers() const {
486 switch (data().InheritedDesignatedInitializers) {
487 case DefinitionData::IDI_Inherited:
488 return true;
489 case DefinitionData::IDI_NotInherited:
490 return false;
491 case DefinitionData::IDI_Unknown: {
492 // If the class introduced initializers we conservatively assume that we
493 // don't know if any of them is a designated initializer to avoid possible
494 // misleading warnings.
495 if (isIntroducingInitializers(this)) {
496 data().InheritedDesignatedInitializers = DefinitionData::IDI_NotInherited;
497 } else {
498 if (auto SuperD = getSuperClass()) {
499 data().InheritedDesignatedInitializers =
500 SuperD->declaresOrInheritsDesignatedInitializers() ?
501 DefinitionData::IDI_Inherited :
502 DefinitionData::IDI_NotInherited;
503 } else {
504 data().InheritedDesignatedInitializers =
505 DefinitionData::IDI_NotInherited;
506 }
507 }
508 assert(data().InheritedDesignatedInitializers((data().InheritedDesignatedInitializers != DefinitionData::IDI_Unknown
) ? static_cast<void> (0) : __assert_fail ("data().InheritedDesignatedInitializers != DefinitionData::IDI_Unknown"
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 509, __PRETTY_FUNCTION__))
509 != DefinitionData::IDI_Unknown)((data().InheritedDesignatedInitializers != DefinitionData::IDI_Unknown
) ? static_cast<void> (0) : __assert_fail ("data().InheritedDesignatedInitializers != DefinitionData::IDI_Unknown"
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 509, __PRETTY_FUNCTION__))
;
510 return data().InheritedDesignatedInitializers ==
511 DefinitionData::IDI_Inherited;
512 }
513 }
514
515 llvm_unreachable("unexpected InheritedDesignatedInitializers value")::llvm::llvm_unreachable_internal("unexpected InheritedDesignatedInitializers value"
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 515)
;
516}
517
518void ObjCInterfaceDecl::getDesignatedInitializers(
519 llvm::SmallVectorImpl<const ObjCMethodDecl *> &Methods) const {
520 // Check for a complete definition and recover if not so.
521 if (!isThisDeclarationADefinition())
522 return;
523 if (data().ExternallyCompleted)
524 LoadExternalDefinition();
525
526 const ObjCInterfaceDecl *IFace= findInterfaceWithDesignatedInitializers();
527 if (!IFace)
528 return;
529
530 for (const auto *MD : IFace->instance_methods())
531 if (MD->isThisDeclarationADesignatedInitializer())
532 Methods.push_back(MD);
533 for (const auto *Ext : IFace->visible_extensions()) {
534 for (const auto *MD : Ext->instance_methods())
535 if (MD->isThisDeclarationADesignatedInitializer())
536 Methods.push_back(MD);
537 }
538}
539
540bool ObjCInterfaceDecl::isDesignatedInitializer(Selector Sel,
541 const ObjCMethodDecl **InitMethod) const {
542 bool HasCompleteDef = isThisDeclarationADefinition();
543 // During deserialization the data record for the ObjCInterfaceDecl could
544 // be made invariant by reusing the canonical decl. Take this into account
545 // when checking for the complete definition.
546 if (!HasCompleteDef && getCanonicalDecl()->hasDefinition() &&
547 getCanonicalDecl()->getDefinition() == getDefinition())
548 HasCompleteDef = true;
549
550 // Check for a complete definition and recover if not so.
551 if (!HasCompleteDef)
552 return false;
553
554 if (data().ExternallyCompleted)
555 LoadExternalDefinition();
556
557 const ObjCInterfaceDecl *IFace= findInterfaceWithDesignatedInitializers();
558 if (!IFace)
559 return false;
560
561 if (const ObjCMethodDecl *MD = IFace->getInstanceMethod(Sel)) {
562 if (MD->isThisDeclarationADesignatedInitializer()) {
563 if (InitMethod)
564 *InitMethod = MD;
565 return true;
566 }
567 }
568 for (const auto *Ext : IFace->visible_extensions()) {
569 if (const ObjCMethodDecl *MD = Ext->getInstanceMethod(Sel)) {
570 if (MD->isThisDeclarationADesignatedInitializer()) {
571 if (InitMethod)
572 *InitMethod = MD;
573 return true;
574 }
575 }
576 }
577 return false;
578}
579
580void ObjCInterfaceDecl::allocateDefinitionData() {
581 assert(!hasDefinition() && "ObjC class already has a definition")((!hasDefinition() && "ObjC class already has a definition"
) ? static_cast<void> (0) : __assert_fail ("!hasDefinition() && \"ObjC class already has a definition\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 581, __PRETTY_FUNCTION__))
;
582 Data.setPointer(new (getASTContext()) DefinitionData());
583 Data.getPointer()->Definition = this;
584
585 // Make the type point at the definition, now that we have one.
586 if (TypeForDecl)
587 cast<ObjCInterfaceType>(TypeForDecl)->Decl = this;
588}
589
590void ObjCInterfaceDecl::startDefinition() {
591 allocateDefinitionData();
592
593 // Update all of the declarations with a pointer to the definition.
594 for (auto RD : redecls()) {
595 if (RD != this)
596 RD->Data = Data;
597 }
598}
599
600ObjCIvarDecl *ObjCInterfaceDecl::lookupInstanceVariable(IdentifierInfo *ID,
601 ObjCInterfaceDecl *&clsDeclared) {
602 // FIXME: Should make sure no callers ever do this.
603 if (!hasDefinition())
604 return nullptr;
605
606 if (data().ExternallyCompleted)
607 LoadExternalDefinition();
608
609 ObjCInterfaceDecl* ClassDecl = this;
610 while (ClassDecl != nullptr) {
611 if (ObjCIvarDecl *I = ClassDecl->getIvarDecl(ID)) {
612 clsDeclared = ClassDecl;
613 return I;
614 }
615
616 for (const auto *Ext : ClassDecl->visible_extensions()) {
617 if (ObjCIvarDecl *I = Ext->getIvarDecl(ID)) {
618 clsDeclared = ClassDecl;
619 return I;
620 }
621 }
622
623 ClassDecl = ClassDecl->getSuperClass();
624 }
625 return nullptr;
626}
627
628/// lookupInheritedClass - This method returns ObjCInterfaceDecl * of the super
629/// class whose name is passed as argument. If it is not one of the super classes
630/// the it returns NULL.
631ObjCInterfaceDecl *ObjCInterfaceDecl::lookupInheritedClass(
632 const IdentifierInfo*ICName) {
633 // FIXME: Should make sure no callers ever do this.
634 if (!hasDefinition())
635 return nullptr;
636
637 if (data().ExternallyCompleted)
638 LoadExternalDefinition();
639
640 ObjCInterfaceDecl* ClassDecl = this;
641 while (ClassDecl != nullptr) {
642 if (ClassDecl->getIdentifier() == ICName)
643 return ClassDecl;
644 ClassDecl = ClassDecl->getSuperClass();
645 }
646 return nullptr;
647}
648
649ObjCProtocolDecl *
650ObjCInterfaceDecl::lookupNestedProtocol(IdentifierInfo *Name) {
651 for (auto *P : all_referenced_protocols())
652 if (P->lookupProtocolNamed(Name))
653 return P;
654 ObjCInterfaceDecl *SuperClass = getSuperClass();
655 return SuperClass ? SuperClass->lookupNestedProtocol(Name) : nullptr;
656}
657
658/// lookupMethod - This method returns an instance/class method by looking in
659/// the class, its categories, and its super classes (using a linear search).
660/// When argument category "C" is specified, any implicit method found
661/// in this category is ignored.
662ObjCMethodDecl *ObjCInterfaceDecl::lookupMethod(Selector Sel,
663 bool isInstance,
664 bool shallowCategoryLookup,
665 bool followSuper,
666 const ObjCCategoryDecl *C) const
667{
668 // FIXME: Should make sure no callers ever do this.
669 if (!hasDefinition())
670 return nullptr;
671
672 const ObjCInterfaceDecl* ClassDecl = this;
673 ObjCMethodDecl *MethodDecl = nullptr;
674
675 if (data().ExternallyCompleted)
676 LoadExternalDefinition();
677
678 while (ClassDecl) {
679 // 1. Look through primary class.
680 if ((MethodDecl = ClassDecl->getMethod(Sel, isInstance)))
681 return MethodDecl;
682
683 // 2. Didn't find one yet - now look through categories.
684 for (const auto *Cat : ClassDecl->visible_categories())
685 if ((MethodDecl = Cat->getMethod(Sel, isInstance)))
686 if (C != Cat || !MethodDecl->isImplicit())
687 return MethodDecl;
688
689 // 3. Didn't find one yet - look through primary class's protocols.
690 for (const auto *I : ClassDecl->protocols())
691 if ((MethodDecl = I->lookupMethod(Sel, isInstance)))
692 return MethodDecl;
693
694 // 4. Didn't find one yet - now look through categories' protocols
695 if (!shallowCategoryLookup)
696 for (const auto *Cat : ClassDecl->visible_categories()) {
697 // Didn't find one yet - look through protocols.
698 const ObjCList<ObjCProtocolDecl> &Protocols =
699 Cat->getReferencedProtocols();
700 for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
701 E = Protocols.end(); I != E; ++I)
702 if ((MethodDecl = (*I)->lookupMethod(Sel, isInstance)))
703 if (C != Cat || !MethodDecl->isImplicit())
704 return MethodDecl;
705 }
706
707
708 if (!followSuper)
709 return nullptr;
710
711 // 5. Get to the super class (if any).
712 ClassDecl = ClassDecl->getSuperClass();
713 }
714 return nullptr;
715}
716
717// Will search "local" class/category implementations for a method decl.
718// If failed, then we search in class's root for an instance method.
719// Returns 0 if no method is found.
720ObjCMethodDecl *ObjCInterfaceDecl::lookupPrivateMethod(
721 const Selector &Sel,
722 bool Instance) const {
723 // FIXME: Should make sure no callers ever do this.
724 if (!hasDefinition())
725 return nullptr;
726
727 if (data().ExternallyCompleted)
728 LoadExternalDefinition();
729
730 ObjCMethodDecl *Method = nullptr;
731 if (ObjCImplementationDecl *ImpDecl = getImplementation())
732 Method = Instance ? ImpDecl->getInstanceMethod(Sel)
733 : ImpDecl->getClassMethod(Sel);
734
735 // Look through local category implementations associated with the class.
736 if (!Method)
737 Method = getCategoryMethod(Sel, Instance);
738
739 // Before we give up, check if the selector is an instance method.
740 // But only in the root. This matches gcc's behavior and what the
741 // runtime expects.
742 if (!Instance && !Method && !getSuperClass()) {
743 Method = lookupInstanceMethod(Sel);
744 // Look through local category implementations associated
745 // with the root class.
746 if (!Method)
747 Method = lookupPrivateMethod(Sel, true);
748 }
749
750 if (!Method && getSuperClass())
751 return getSuperClass()->lookupPrivateMethod(Sel, Instance);
752 return Method;
753}
754
755//===----------------------------------------------------------------------===//
756// ObjCMethodDecl
757//===----------------------------------------------------------------------===//
758
759ObjCMethodDecl *ObjCMethodDecl::Create(
760 ASTContext &C, SourceLocation beginLoc, SourceLocation endLoc,
761 Selector SelInfo, QualType T, TypeSourceInfo *ReturnTInfo,
762 DeclContext *contextDecl, bool isInstance, bool isVariadic,
763 bool isPropertyAccessor, bool isImplicitlyDeclared, bool isDefined,
764 ImplementationControl impControl, bool HasRelatedResultType) {
765 return new (C, contextDecl) ObjCMethodDecl(
766 beginLoc, endLoc, SelInfo, T, ReturnTInfo, contextDecl, isInstance,
767 isVariadic, isPropertyAccessor, isImplicitlyDeclared, isDefined,
768 impControl, HasRelatedResultType);
769}
770
771ObjCMethodDecl *ObjCMethodDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
772 return new (C, ID) ObjCMethodDecl(SourceLocation(), SourceLocation(),
773 Selector(), QualType(), nullptr, nullptr);
774}
775
776bool ObjCMethodDecl::isThisDeclarationADesignatedInitializer() const {
777 return getMethodFamily() == OMF_init &&
778 hasAttr<ObjCDesignatedInitializerAttr>();
779}
780
781bool ObjCMethodDecl::isDesignatedInitializerForTheInterface(
782 const ObjCMethodDecl **InitMethod) const {
783 if (getMethodFamily() != OMF_init)
784 return false;
785 const DeclContext *DC = getDeclContext();
786 if (isa<ObjCProtocolDecl>(DC))
787 return false;
788 if (const ObjCInterfaceDecl *ID = getClassInterface())
789 return ID->isDesignatedInitializer(getSelector(), InitMethod);
790 return false;
791}
792
793Stmt *ObjCMethodDecl::getBody() const {
794 return Body.get(getASTContext().getExternalSource());
795}
796
797void ObjCMethodDecl::setAsRedeclaration(const ObjCMethodDecl *PrevMethod) {
798 assert(PrevMethod)((PrevMethod) ? static_cast<void> (0) : __assert_fail (
"PrevMethod", "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 798, __PRETTY_FUNCTION__))
;
799 getASTContext().setObjCMethodRedeclaration(PrevMethod, this);
800 IsRedeclaration = true;
801 PrevMethod->HasRedeclaration = true;
802}
803
804void ObjCMethodDecl::setParamsAndSelLocs(ASTContext &C,
805 ArrayRef<ParmVarDecl*> Params,
806 ArrayRef<SourceLocation> SelLocs) {
807 ParamsAndSelLocs = nullptr;
808 NumParams = Params.size();
809 if (Params.empty() && SelLocs.empty())
810 return;
811
812 static_assert(alignof(ParmVarDecl *) >= alignof(SourceLocation),
813 "Alignment not sufficient for SourceLocation");
814
815 unsigned Size = sizeof(ParmVarDecl *) * NumParams +
816 sizeof(SourceLocation) * SelLocs.size();
817 ParamsAndSelLocs = C.Allocate(Size);
818 std::copy(Params.begin(), Params.end(), getParams());
819 std::copy(SelLocs.begin(), SelLocs.end(), getStoredSelLocs());
820}
821
822void ObjCMethodDecl::getSelectorLocs(
823 SmallVectorImpl<SourceLocation> &SelLocs) const {
824 for (unsigned i = 0, e = getNumSelectorLocs(); i != e; ++i)
825 SelLocs.push_back(getSelectorLoc(i));
826}
827
828void ObjCMethodDecl::setMethodParams(ASTContext &C,
829 ArrayRef<ParmVarDecl*> Params,
830 ArrayRef<SourceLocation> SelLocs) {
831 assert((!SelLocs.empty() || isImplicit()) &&(((!SelLocs.empty() || isImplicit()) && "No selector locs for non-implicit method"
) ? static_cast<void> (0) : __assert_fail ("(!SelLocs.empty() || isImplicit()) && \"No selector locs for non-implicit method\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 832, __PRETTY_FUNCTION__))
832 "No selector locs for non-implicit method")(((!SelLocs.empty() || isImplicit()) && "No selector locs for non-implicit method"
) ? static_cast<void> (0) : __assert_fail ("(!SelLocs.empty() || isImplicit()) && \"No selector locs for non-implicit method\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 832, __PRETTY_FUNCTION__))
;
833 if (isImplicit())
834 return setParamsAndSelLocs(C, Params, llvm::None);
835
836 SelLocsKind = hasStandardSelectorLocs(getSelector(), SelLocs, Params,
837 DeclEndLoc);
838 if (SelLocsKind != SelLoc_NonStandard)
839 return setParamsAndSelLocs(C, Params, llvm::None);
840
841 setParamsAndSelLocs(C, Params, SelLocs);
842}
843
844/// \brief A definition will return its interface declaration.
845/// An interface declaration will return its definition.
846/// Otherwise it will return itself.
847ObjCMethodDecl *ObjCMethodDecl::getNextRedeclarationImpl() {
848 ASTContext &Ctx = getASTContext();
849 ObjCMethodDecl *Redecl = nullptr;
850 if (HasRedeclaration)
851 Redecl = const_cast<ObjCMethodDecl*>(Ctx.getObjCMethodRedeclaration(this));
852 if (Redecl)
853 return Redecl;
854
855 Decl *CtxD = cast<Decl>(getDeclContext());
856
857 if (!CtxD->isInvalidDecl()) {
858 if (ObjCInterfaceDecl *IFD = dyn_cast<ObjCInterfaceDecl>(CtxD)) {
859 if (ObjCImplementationDecl *ImplD = Ctx.getObjCImplementation(IFD))
860 if (!ImplD->isInvalidDecl())
861 Redecl = ImplD->getMethod(getSelector(), isInstanceMethod());
862
863 } else if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(CtxD)) {
864 if (ObjCCategoryImplDecl *ImplD = Ctx.getObjCImplementation(CD))
865 if (!ImplD->isInvalidDecl())
866 Redecl = ImplD->getMethod(getSelector(), isInstanceMethod());
867
868 } else if (ObjCImplementationDecl *ImplD =
869 dyn_cast<ObjCImplementationDecl>(CtxD)) {
870 if (ObjCInterfaceDecl *IFD = ImplD->getClassInterface())
871 if (!IFD->isInvalidDecl())
872 Redecl = IFD->getMethod(getSelector(), isInstanceMethod());
873
874 } else if (ObjCCategoryImplDecl *CImplD =
875 dyn_cast<ObjCCategoryImplDecl>(CtxD)) {
876 if (ObjCCategoryDecl *CatD = CImplD->getCategoryDecl())
877 if (!CatD->isInvalidDecl())
878 Redecl = CatD->getMethod(getSelector(), isInstanceMethod());
879 }
880 }
881
882 // Ensure that the discovered method redeclaration has a valid declaration
883 // context. Used to prevent infinite loops when iterating redeclarations in
884 // a partially invalid AST.
885 if (Redecl && cast<Decl>(Redecl->getDeclContext())->isInvalidDecl())
886 Redecl = nullptr;
887
888 if (!Redecl && isRedeclaration()) {
889 // This is the last redeclaration, go back to the first method.
890 return cast<ObjCContainerDecl>(CtxD)->getMethod(getSelector(),
891 isInstanceMethod());
892 }
893
894 return Redecl ? Redecl : this;
895}
896
897ObjCMethodDecl *ObjCMethodDecl::getCanonicalDecl() {
898 Decl *CtxD = cast<Decl>(getDeclContext());
899
900 if (ObjCImplementationDecl *ImplD = dyn_cast<ObjCImplementationDecl>(CtxD)) {
901 if (ObjCInterfaceDecl *IFD = ImplD->getClassInterface())
902 if (ObjCMethodDecl *MD = IFD->getMethod(getSelector(),
903 isInstanceMethod()))
904 return MD;
905
906 } else if (ObjCCategoryImplDecl *CImplD =
907 dyn_cast<ObjCCategoryImplDecl>(CtxD)) {
908 if (ObjCCategoryDecl *CatD = CImplD->getCategoryDecl())
909 if (ObjCMethodDecl *MD = CatD->getMethod(getSelector(),
910 isInstanceMethod()))
911 return MD;
912 }
913
914 if (isRedeclaration()) {
915 // It is possible that we have not done deserializing the ObjCMethod yet.
916 ObjCMethodDecl *MD =
917 cast<ObjCContainerDecl>(CtxD)->getMethod(getSelector(),
918 isInstanceMethod());
919 return MD ? MD : this;
920 }
921
922 return this;
923}
924
925SourceLocation ObjCMethodDecl::getLocEnd() const {
926 if (Stmt *Body = getBody())
927 return Body->getLocEnd();
928 return DeclEndLoc;
929}
930
931ObjCMethodFamily ObjCMethodDecl::getMethodFamily() const {
932 ObjCMethodFamily family = static_cast<ObjCMethodFamily>(Family);
933 if (family != static_cast<unsigned>(InvalidObjCMethodFamily))
934 return family;
935
936 // Check for an explicit attribute.
937 if (const ObjCMethodFamilyAttr *attr = getAttr<ObjCMethodFamilyAttr>()) {
938 // The unfortunate necessity of mapping between enums here is due
939 // to the attributes framework.
940 switch (attr->getFamily()) {
941 case ObjCMethodFamilyAttr::OMF_None: family = OMF_None; break;
942 case ObjCMethodFamilyAttr::OMF_alloc: family = OMF_alloc; break;
943 case ObjCMethodFamilyAttr::OMF_copy: family = OMF_copy; break;
944 case ObjCMethodFamilyAttr::OMF_init: family = OMF_init; break;
945 case ObjCMethodFamilyAttr::OMF_mutableCopy: family = OMF_mutableCopy; break;
946 case ObjCMethodFamilyAttr::OMF_new: family = OMF_new; break;
947 }
948 Family = static_cast<unsigned>(family);
949 return family;
950 }
951
952 family = getSelector().getMethodFamily();
953 switch (family) {
954 case OMF_None: break;
955
956 // init only has a conventional meaning for an instance method, and
957 // it has to return an object.
958 case OMF_init:
959 if (!isInstanceMethod() || !getReturnType()->isObjCObjectPointerType())
960 family = OMF_None;
961 break;
962
963 // alloc/copy/new have a conventional meaning for both class and
964 // instance methods, but they require an object return.
965 case OMF_alloc:
966 case OMF_copy:
967 case OMF_mutableCopy:
968 case OMF_new:
969 if (!getReturnType()->isObjCObjectPointerType())
970 family = OMF_None;
971 break;
972
973 // These selectors have a conventional meaning only for instance methods.
974 case OMF_dealloc:
975 case OMF_finalize:
976 case OMF_retain:
977 case OMF_release:
978 case OMF_autorelease:
979 case OMF_retainCount:
980 case OMF_self:
981 if (!isInstanceMethod())
982 family = OMF_None;
983 break;
984
985 case OMF_initialize:
986 if (isInstanceMethod() || !getReturnType()->isVoidType())
987 family = OMF_None;
988 break;
989
990 case OMF_performSelector:
991 if (!isInstanceMethod() || !getReturnType()->isObjCIdType())
992 family = OMF_None;
993 else {
994 unsigned noParams = param_size();
995 if (noParams < 1 || noParams > 3)
996 family = OMF_None;
997 else {
998 ObjCMethodDecl::param_type_iterator it = param_type_begin();
999 QualType ArgT = (*it);
1000 if (!ArgT->isObjCSelType()) {
1001 family = OMF_None;
1002 break;
1003 }
1004 while (--noParams) {
1005 it++;
1006 ArgT = (*it);
1007 if (!ArgT->isObjCIdType()) {
1008 family = OMF_None;
1009 break;
1010 }
1011 }
1012 }
1013 }
1014 break;
1015
1016 }
1017
1018 // Cache the result.
1019 Family = static_cast<unsigned>(family);
1020 return family;
1021}
1022
1023QualType ObjCMethodDecl::getSelfType(ASTContext &Context,
1024 const ObjCInterfaceDecl *OID,
1025 bool &selfIsPseudoStrong,
1026 bool &selfIsConsumed) {
1027 QualType selfTy;
1028 selfIsPseudoStrong = false;
1029 selfIsConsumed = false;
1030 if (isInstanceMethod()) {
1031 // There may be no interface context due to error in declaration
1032 // of the interface (which has been reported). Recover gracefully.
1033 if (OID) {
1034 selfTy = Context.getObjCInterfaceType(OID);
1035 selfTy = Context.getObjCObjectPointerType(selfTy);
1036 } else {
1037 selfTy = Context.getObjCIdType();
1038 }
1039 } else // we have a factory method.
1040 selfTy = Context.getObjCClassType();
1041
1042 if (Context.getLangOpts().ObjCAutoRefCount) {
1043 if (isInstanceMethod()) {
1044 selfIsConsumed = hasAttr<NSConsumesSelfAttr>();
1045
1046 // 'self' is always __strong. It's actually pseudo-strong except
1047 // in init methods (or methods labeled ns_consumes_self), though.
1048 Qualifiers qs;
1049 qs.setObjCLifetime(Qualifiers::OCL_Strong);
1050 selfTy = Context.getQualifiedType(selfTy, qs);
1051
1052 // In addition, 'self' is const unless this is an init method.
1053 if (getMethodFamily() != OMF_init && !selfIsConsumed) {
1054 selfTy = selfTy.withConst();
1055 selfIsPseudoStrong = true;
1056 }
1057 }
1058 else {
1059 assert(isClassMethod())((isClassMethod()) ? static_cast<void> (0) : __assert_fail
("isClassMethod()", "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1059, __PRETTY_FUNCTION__))
;
1060 // 'self' is always const in class methods.
1061 selfTy = selfTy.withConst();
1062 selfIsPseudoStrong = true;
1063 }
1064 }
1065 return selfTy;
1066}
1067
1068void ObjCMethodDecl::createImplicitParams(ASTContext &Context,
1069 const ObjCInterfaceDecl *OID) {
1070 bool selfIsPseudoStrong, selfIsConsumed;
1071 QualType selfTy =
1072 getSelfType(Context, OID, selfIsPseudoStrong, selfIsConsumed);
1073 auto *Self = ImplicitParamDecl::Create(Context, this, SourceLocation(),
1074 &Context.Idents.get("self"), selfTy,
1075 ImplicitParamDecl::ObjCSelf);
1076 setSelfDecl(Self);
1077
1078 if (selfIsConsumed)
1079 Self->addAttr(NSConsumedAttr::CreateImplicit(Context));
1080
1081 if (selfIsPseudoStrong)
1082 Self->setARCPseudoStrong(true);
1083
1084 setCmdDecl(ImplicitParamDecl::Create(
1085 Context, this, SourceLocation(), &Context.Idents.get("_cmd"),
1086 Context.getObjCSelType(), ImplicitParamDecl::ObjCCmd));
1087}
1088
1089ObjCInterfaceDecl *ObjCMethodDecl::getClassInterface() {
1090 if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(getDeclContext()))
1091 return ID;
1092 if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(getDeclContext()))
1093 return CD->getClassInterface();
1094 if (ObjCImplDecl *IMD = dyn_cast<ObjCImplDecl>(getDeclContext()))
1095 return IMD->getClassInterface();
1096 if (isa<ObjCProtocolDecl>(getDeclContext()))
1097 return nullptr;
1098 llvm_unreachable("unknown method context")::llvm::llvm_unreachable_internal("unknown method context", "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1098)
;
1099}
1100
1101SourceRange ObjCMethodDecl::getReturnTypeSourceRange() const {
1102 const auto *TSI = getReturnTypeSourceInfo();
1103 if (TSI)
1104 return TSI->getTypeLoc().getSourceRange();
1105 return SourceRange();
1106}
1107
1108QualType ObjCMethodDecl::getSendResultType() const {
1109 ASTContext &Ctx = getASTContext();
1110 return getReturnType().getNonLValueExprType(Ctx)
1111 .substObjCTypeArgs(Ctx, {}, ObjCSubstitutionContext::Result);
1112}
1113
1114QualType ObjCMethodDecl::getSendResultType(QualType receiverType) const {
1115 // FIXME: Handle related result types here.
1116
1117 return getReturnType().getNonLValueExprType(getASTContext())
1118 .substObjCMemberType(receiverType, getDeclContext(),
1119 ObjCSubstitutionContext::Result);
1120}
1121
1122static void CollectOverriddenMethodsRecurse(const ObjCContainerDecl *Container,
1123 const ObjCMethodDecl *Method,
1124 SmallVectorImpl<const ObjCMethodDecl *> &Methods,
1125 bool MovedToSuper) {
1126 if (!Container)
1127 return;
1128
1129 // In categories look for overriden methods from protocols. A method from
1130 // category is not "overriden" since it is considered as the "same" method
1131 // (same USR) as the one from the interface.
1132 if (const ObjCCategoryDecl *
1133 Category = dyn_cast<ObjCCategoryDecl>(Container)) {
1134 // Check whether we have a matching method at this category but only if we
1135 // are at the super class level.
1136 if (MovedToSuper)
1137 if (ObjCMethodDecl *
1138 Overridden = Container->getMethod(Method->getSelector(),
1139 Method->isInstanceMethod(),
1140 /*AllowHidden=*/true))
1141 if (Method != Overridden) {
1142 // We found an override at this category; there is no need to look
1143 // into its protocols.
1144 Methods.push_back(Overridden);
1145 return;
1146 }
1147
1148 for (const auto *P : Category->protocols())
1149 CollectOverriddenMethodsRecurse(P, Method, Methods, MovedToSuper);
1150 return;
1151 }
1152
1153 // Check whether we have a matching method at this level.
1154 if (const ObjCMethodDecl *
1155 Overridden = Container->getMethod(Method->getSelector(),
1156 Method->isInstanceMethod(),
1157 /*AllowHidden=*/true))
1158 if (Method != Overridden) {
1159 // We found an override at this level; there is no need to look
1160 // into other protocols or categories.
1161 Methods.push_back(Overridden);
1162 return;
1163 }
1164
1165 if (const ObjCProtocolDecl *Protocol = dyn_cast<ObjCProtocolDecl>(Container)){
1166 for (const auto *P : Protocol->protocols())
1167 CollectOverriddenMethodsRecurse(P, Method, Methods, MovedToSuper);
1168 }
1169
1170 if (const ObjCInterfaceDecl *
1171 Interface = dyn_cast<ObjCInterfaceDecl>(Container)) {
1172 for (const auto *P : Interface->protocols())
1173 CollectOverriddenMethodsRecurse(P, Method, Methods, MovedToSuper);
1174
1175 for (const auto *Cat : Interface->known_categories())
1176 CollectOverriddenMethodsRecurse(Cat, Method, Methods, MovedToSuper);
1177
1178 if (const ObjCInterfaceDecl *Super = Interface->getSuperClass())
1179 return CollectOverriddenMethodsRecurse(Super, Method, Methods,
1180 /*MovedToSuper=*/true);
1181 }
1182}
1183
1184static inline void CollectOverriddenMethods(const ObjCContainerDecl *Container,
1185 const ObjCMethodDecl *Method,
1186 SmallVectorImpl<const ObjCMethodDecl *> &Methods) {
1187 CollectOverriddenMethodsRecurse(Container, Method, Methods,
1188 /*MovedToSuper=*/false);
1189}
1190
1191static void collectOverriddenMethodsSlow(const ObjCMethodDecl *Method,
1192 SmallVectorImpl<const ObjCMethodDecl *> &overridden) {
1193 assert(Method->isOverriding())((Method->isOverriding()) ? static_cast<void> (0) : __assert_fail
("Method->isOverriding()", "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1193, __PRETTY_FUNCTION__))
;
1194
1195 if (const ObjCProtocolDecl *
1196 ProtD = dyn_cast<ObjCProtocolDecl>(Method->getDeclContext())) {
1197 CollectOverriddenMethods(ProtD, Method, overridden);
1198
1199 } else if (const ObjCImplDecl *
1200 IMD = dyn_cast<ObjCImplDecl>(Method->getDeclContext())) {
1201 const ObjCInterfaceDecl *ID = IMD->getClassInterface();
1202 if (!ID)
1203 return;
1204 // Start searching for overridden methods using the method from the
1205 // interface as starting point.
1206 if (const ObjCMethodDecl *IFaceMeth = ID->getMethod(Method->getSelector(),
1207 Method->isInstanceMethod(),
1208 /*AllowHidden=*/true))
1209 Method = IFaceMeth;
1210 CollectOverriddenMethods(ID, Method, overridden);
1211
1212 } else if (const ObjCCategoryDecl *
1213 CatD = dyn_cast<ObjCCategoryDecl>(Method->getDeclContext())) {
1214 const ObjCInterfaceDecl *ID = CatD->getClassInterface();
1215 if (!ID)
1216 return;
1217 // Start searching for overridden methods using the method from the
1218 // interface as starting point.
1219 if (const ObjCMethodDecl *IFaceMeth = ID->getMethod(Method->getSelector(),
1220 Method->isInstanceMethod(),
1221 /*AllowHidden=*/true))
1222 Method = IFaceMeth;
1223 CollectOverriddenMethods(ID, Method, overridden);
1224
1225 } else {
1226 CollectOverriddenMethods(
1227 dyn_cast_or_null<ObjCContainerDecl>(Method->getDeclContext()),
1228 Method, overridden);
1229 }
1230}
1231
1232void ObjCMethodDecl::getOverriddenMethods(
1233 SmallVectorImpl<const ObjCMethodDecl *> &Overridden) const {
1234 const ObjCMethodDecl *Method = this;
1235
1236 if (Method->isRedeclaration()) {
1237 Method = cast<ObjCContainerDecl>(Method->getDeclContext())->
1238 getMethod(Method->getSelector(), Method->isInstanceMethod());
1239 }
1240
1241 if (Method->isOverriding()) {
1242 collectOverriddenMethodsSlow(Method, Overridden);
1243 assert(!Overridden.empty() &&((!Overridden.empty() && "ObjCMethodDecl's overriding bit is not as expected"
) ? static_cast<void> (0) : __assert_fail ("!Overridden.empty() && \"ObjCMethodDecl's overriding bit is not as expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1244, __PRETTY_FUNCTION__))
1244 "ObjCMethodDecl's overriding bit is not as expected")((!Overridden.empty() && "ObjCMethodDecl's overriding bit is not as expected"
) ? static_cast<void> (0) : __assert_fail ("!Overridden.empty() && \"ObjCMethodDecl's overriding bit is not as expected\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1244, __PRETTY_FUNCTION__))
;
1245 }
1246}
1247
1248const ObjCPropertyDecl *
1249ObjCMethodDecl::findPropertyDecl(bool CheckOverrides) const {
1250 Selector Sel = getSelector();
1251 unsigned NumArgs = Sel.getNumArgs();
1252 if (NumArgs > 1)
1253 return nullptr;
1254
1255 if (isPropertyAccessor()) {
1256 const ObjCContainerDecl *Container = cast<ObjCContainerDecl>(getParent());
1257 bool IsGetter = (NumArgs == 0);
1258 bool IsInstance = isInstanceMethod();
1259
1260 /// Local function that attempts to find a matching property within the
1261 /// given Objective-C container.
1262 auto findMatchingProperty =
1263 [&](const ObjCContainerDecl *Container) -> const ObjCPropertyDecl * {
1264 if (IsInstance) {
1265 for (const auto *I : Container->instance_properties()) {
1266 Selector NextSel = IsGetter ? I->getGetterName()
1267 : I->getSetterName();
1268 if (NextSel == Sel)
1269 return I;
1270 }
1271 } else {
1272 for (const auto *I : Container->class_properties()) {
1273 Selector NextSel = IsGetter ? I->getGetterName()
1274 : I->getSetterName();
1275 if (NextSel == Sel)
1276 return I;
1277 }
1278 }
1279
1280 return nullptr;
1281 };
1282
1283 // Look in the container we were given.
1284 if (const auto *Found = findMatchingProperty(Container))
1285 return Found;
1286
1287 // If we're in a category or extension, look in the main class.
1288 const ObjCInterfaceDecl *ClassDecl = nullptr;
1289 if (const auto *Category = dyn_cast<ObjCCategoryDecl>(Container)) {
1290 ClassDecl = Category->getClassInterface();
1291 if (const auto *Found = findMatchingProperty(ClassDecl))
1292 return Found;
1293 } else {
1294 // Determine whether the container is a class.
1295 ClassDecl = dyn_cast<ObjCInterfaceDecl>(Container);
1296 }
1297
1298 // If we have a class, check its visible extensions.
1299 if (ClassDecl) {
1300 for (const auto *Ext : ClassDecl->visible_extensions()) {
1301 if (Ext == Container)
1302 continue;
1303
1304 if (const auto *Found = findMatchingProperty(Ext))
1305 return Found;
1306 }
1307 }
1308
1309 llvm_unreachable("Marked as a property accessor but no property found!")::llvm::llvm_unreachable_internal("Marked as a property accessor but no property found!"
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1309)
;
1310 }
1311
1312 if (!CheckOverrides)
1313 return nullptr;
1314
1315 typedef SmallVector<const ObjCMethodDecl *, 8> OverridesTy;
1316 OverridesTy Overrides;
1317 getOverriddenMethods(Overrides);
1318 for (OverridesTy::const_iterator I = Overrides.begin(), E = Overrides.end();
1319 I != E; ++I) {
1320 if (const ObjCPropertyDecl *Prop = (*I)->findPropertyDecl(false))
1321 return Prop;
1322 }
1323
1324 return nullptr;
1325}
1326
1327//===----------------------------------------------------------------------===//
1328// ObjCTypeParamDecl
1329//===----------------------------------------------------------------------===//
1330
1331void ObjCTypeParamDecl::anchor() { }
1332
1333ObjCTypeParamDecl *ObjCTypeParamDecl::Create(ASTContext &ctx, DeclContext *dc,
1334 ObjCTypeParamVariance variance,
1335 SourceLocation varianceLoc,
1336 unsigned index,
1337 SourceLocation nameLoc,
1338 IdentifierInfo *name,
1339 SourceLocation colonLoc,
1340 TypeSourceInfo *boundInfo) {
1341 auto *TPDecl =
1342 new (ctx, dc) ObjCTypeParamDecl(ctx, dc, variance, varianceLoc, index,
1343 nameLoc, name, colonLoc, boundInfo);
1344 QualType TPType = ctx.getObjCTypeParamType(TPDecl, {});
1345 TPDecl->setTypeForDecl(TPType.getTypePtr());
1346 return TPDecl;
1347}
1348
1349ObjCTypeParamDecl *ObjCTypeParamDecl::CreateDeserialized(ASTContext &ctx,
1350 unsigned ID) {
1351 return new (ctx, ID) ObjCTypeParamDecl(ctx, nullptr,
1352 ObjCTypeParamVariance::Invariant,
1353 SourceLocation(), 0, SourceLocation(),
1354 nullptr, SourceLocation(), nullptr);
1355}
1356
1357SourceRange ObjCTypeParamDecl::getSourceRange() const {
1358 SourceLocation startLoc = VarianceLoc;
1359 if (startLoc.isInvalid())
1360 startLoc = getLocation();
1361
1362 if (hasExplicitBound()) {
1363 return SourceRange(startLoc,
1364 getTypeSourceInfo()->getTypeLoc().getEndLoc());
1365 }
1366
1367 return SourceRange(startLoc);
1368}
1369
1370//===----------------------------------------------------------------------===//
1371// ObjCTypeParamList
1372//===----------------------------------------------------------------------===//
1373ObjCTypeParamList::ObjCTypeParamList(SourceLocation lAngleLoc,
1374 ArrayRef<ObjCTypeParamDecl *> typeParams,
1375 SourceLocation rAngleLoc)
1376 : NumParams(typeParams.size())
1377{
1378 Brackets.Begin = lAngleLoc.getRawEncoding();
1379 Brackets.End = rAngleLoc.getRawEncoding();
1380 std::copy(typeParams.begin(), typeParams.end(), begin());
1381}
1382
1383
1384ObjCTypeParamList *ObjCTypeParamList::create(
1385 ASTContext &ctx,
1386 SourceLocation lAngleLoc,
1387 ArrayRef<ObjCTypeParamDecl *> typeParams,
1388 SourceLocation rAngleLoc) {
1389 void *mem =
1390 ctx.Allocate(totalSizeToAlloc<ObjCTypeParamDecl *>(typeParams.size()),
1391 alignof(ObjCTypeParamList));
1392 return new (mem) ObjCTypeParamList(lAngleLoc, typeParams, rAngleLoc);
1393}
1394
1395void ObjCTypeParamList::gatherDefaultTypeArgs(
1396 SmallVectorImpl<QualType> &typeArgs) const {
1397 typeArgs.reserve(size());
1398 for (auto typeParam : *this)
1399 typeArgs.push_back(typeParam->getUnderlyingType());
1400}
1401
1402//===----------------------------------------------------------------------===//
1403// ObjCInterfaceDecl
1404//===----------------------------------------------------------------------===//
1405
1406ObjCInterfaceDecl *ObjCInterfaceDecl::Create(const ASTContext &C,
1407 DeclContext *DC,
1408 SourceLocation atLoc,
1409 IdentifierInfo *Id,
1410 ObjCTypeParamList *typeParamList,
1411 ObjCInterfaceDecl *PrevDecl,
1412 SourceLocation ClassLoc,
1413 bool isInternal){
1414 ObjCInterfaceDecl *Result = new (C, DC)
1415 ObjCInterfaceDecl(C, DC, atLoc, Id, typeParamList, ClassLoc, PrevDecl,
1416 isInternal);
1417 Result->Data.setInt(!C.getLangOpts().Modules);
1418 C.getObjCInterfaceType(Result, PrevDecl);
1419 return Result;
1420}
1421
1422ObjCInterfaceDecl *ObjCInterfaceDecl::CreateDeserialized(const ASTContext &C,
1423 unsigned ID) {
1424 ObjCInterfaceDecl *Result = new (C, ID) ObjCInterfaceDecl(C, nullptr,
1425 SourceLocation(),
1426 nullptr,
1427 nullptr,
1428 SourceLocation(),
1429 nullptr, false);
1430 Result->Data.setInt(!C.getLangOpts().Modules);
1431 return Result;
1432}
1433
1434ObjCInterfaceDecl::ObjCInterfaceDecl(const ASTContext &C, DeclContext *DC,
1435 SourceLocation AtLoc, IdentifierInfo *Id,
1436 ObjCTypeParamList *typeParamList,
1437 SourceLocation CLoc,
1438 ObjCInterfaceDecl *PrevDecl,
1439 bool IsInternal)
1440 : ObjCContainerDecl(ObjCInterface, DC, Id, CLoc, AtLoc),
1441 redeclarable_base(C), TypeForDecl(nullptr), TypeParamList(nullptr),
1442 Data() {
1443 setPreviousDecl(PrevDecl);
1444
1445 // Copy the 'data' pointer over.
1446 if (PrevDecl)
1447 Data = PrevDecl->Data;
1448
1449 setImplicit(IsInternal);
1450
1451 setTypeParamList(typeParamList);
1452}
1453
1454void ObjCInterfaceDecl::LoadExternalDefinition() const {
1455 assert(data().ExternallyCompleted && "Class is not externally completed")((data().ExternallyCompleted && "Class is not externally completed"
) ? static_cast<void> (0) : __assert_fail ("data().ExternallyCompleted && \"Class is not externally completed\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1455, __PRETTY_FUNCTION__))
;
1456 data().ExternallyCompleted = false;
1457 getASTContext().getExternalSource()->CompleteType(
1458 const_cast<ObjCInterfaceDecl *>(this));
1459}
1460
1461void ObjCInterfaceDecl::setExternallyCompleted() {
1462 assert(getASTContext().getExternalSource() &&((getASTContext().getExternalSource() && "Class can't be externally completed without an external source"
) ? static_cast<void> (0) : __assert_fail ("getASTContext().getExternalSource() && \"Class can't be externally completed without an external source\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1463, __PRETTY_FUNCTION__))
1463 "Class can't be externally completed without an external source")((getASTContext().getExternalSource() && "Class can't be externally completed without an external source"
) ? static_cast<void> (0) : __assert_fail ("getASTContext().getExternalSource() && \"Class can't be externally completed without an external source\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1463, __PRETTY_FUNCTION__))
;
1464 assert(hasDefinition() &&((hasDefinition() && "Forward declarations can't be externally completed"
) ? static_cast<void> (0) : __assert_fail ("hasDefinition() && \"Forward declarations can't be externally completed\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1465, __PRETTY_FUNCTION__))
1465 "Forward declarations can't be externally completed")((hasDefinition() && "Forward declarations can't be externally completed"
) ? static_cast<void> (0) : __assert_fail ("hasDefinition() && \"Forward declarations can't be externally completed\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1465, __PRETTY_FUNCTION__))
;
1466 data().ExternallyCompleted = true;
1467}
1468
1469void ObjCInterfaceDecl::setHasDesignatedInitializers() {
1470 // Check for a complete definition and recover if not so.
1471 if (!isThisDeclarationADefinition())
1472 return;
1473 data().HasDesignatedInitializers = true;
1474}
1475
1476bool ObjCInterfaceDecl::hasDesignatedInitializers() const {
1477 // Check for a complete definition and recover if not so.
1478 if (!isThisDeclarationADefinition())
1479 return false;
1480 if (data().ExternallyCompleted)
1481 LoadExternalDefinition();
1482
1483 return data().HasDesignatedInitializers;
1484}
1485
1486StringRef
1487ObjCInterfaceDecl::getObjCRuntimeNameAsString() const {
1488 if (ObjCRuntimeNameAttr *ObjCRTName = getAttr<ObjCRuntimeNameAttr>())
1489 return ObjCRTName->getMetadataName();
1490
1491 return getName();
1492}
1493
1494StringRef
1495ObjCImplementationDecl::getObjCRuntimeNameAsString() const {
1496 if (ObjCInterfaceDecl *ID =
1497 const_cast<ObjCImplementationDecl*>(this)->getClassInterface())
1498 return ID->getObjCRuntimeNameAsString();
1499
1500 return getName();
1501}
1502
1503ObjCImplementationDecl *ObjCInterfaceDecl::getImplementation() const {
1504 if (const ObjCInterfaceDecl *Def = getDefinition()) {
1505 if (data().ExternallyCompleted)
1506 LoadExternalDefinition();
1507
1508 return getASTContext().getObjCImplementation(
1509 const_cast<ObjCInterfaceDecl*>(Def));
1510 }
1511
1512 // FIXME: Should make sure no callers ever do this.
1513 return nullptr;
1514}
1515
1516void ObjCInterfaceDecl::setImplementation(ObjCImplementationDecl *ImplD) {
1517 getASTContext().setObjCImplementation(getDefinition(), ImplD);
1518}
1519
1520namespace {
1521 struct SynthesizeIvarChunk {
1522 uint64_t Size;
1523 ObjCIvarDecl *Ivar;
1524 SynthesizeIvarChunk(uint64_t size, ObjCIvarDecl *ivar)
1525 : Size(size), Ivar(ivar) {}
1526 };
1527
1528 bool operator<(const SynthesizeIvarChunk & LHS,
1529 const SynthesizeIvarChunk &RHS) {
1530 return LHS.Size < RHS.Size;
1531 }
1532}
1533
1534/// all_declared_ivar_begin - return first ivar declared in this class,
1535/// its extensions and its implementation. Lazily build the list on first
1536/// access.
1537///
1538/// Caveat: The list returned by this method reflects the current
1539/// state of the parser. The cache will be updated for every ivar
1540/// added by an extension or the implementation when they are
1541/// encountered.
1542/// See also ObjCIvarDecl::Create().
1543ObjCIvarDecl *ObjCInterfaceDecl::all_declared_ivar_begin() {
1544 // FIXME: Should make sure no callers ever do this.
1545 if (!hasDefinition())
1
Assuming the condition is false
2
Taking false branch
1546 return nullptr;
1547
1548 ObjCIvarDecl *curIvar = nullptr;
3
'curIvar' initialized to a null pointer value
1549 if (!data().IvarList) {
4
Assuming the condition is false
5
Taking false branch
1550 if (!ivar_empty()) {
1551 ObjCInterfaceDecl::ivar_iterator I = ivar_begin(), E = ivar_end();
1552 data().IvarList = *I; ++I;
1553 for (curIvar = data().IvarList; I != E; curIvar = *I, ++I)
1554 curIvar->setNextIvar(*I);
1555 }
1556
1557 for (const auto *Ext : known_extensions()) {
1558 if (!Ext->ivar_empty()) {
1559 ObjCCategoryDecl::ivar_iterator
1560 I = Ext->ivar_begin(),
1561 E = Ext->ivar_end();
1562 if (!data().IvarList) {
1563 data().IvarList = *I; ++I;
1564 curIvar = data().IvarList;
1565 }
1566 for ( ;I != E; curIvar = *I, ++I)
1567 curIvar->setNextIvar(*I);
1568 }
1569 }
1570 data().IvarListMissingImplementation = true;
1571 }
1572
1573 // cached and complete!
1574 if (!data().IvarListMissingImplementation)
6
Assuming the condition is false
7
Taking false branch
1575 return data().IvarList;
1576
1577 if (ObjCImplementationDecl *ImplDecl = getImplementation()) {
8
Assuming 'ImplDecl' is non-null
9
Taking true branch
1578 data().IvarListMissingImplementation = false;
1579 if (!ImplDecl->ivar_empty()) {
10
Taking true branch
1580 SmallVector<SynthesizeIvarChunk, 16> layout;
1581 for (auto *IV : ImplDecl->ivars()) {
1582 if (IV->getSynthesize() && !IV->isInvalidDecl()) {
1583 layout.push_back(SynthesizeIvarChunk(
1584 IV->getASTContext().getTypeSize(IV->getType()), IV));
1585 continue;
1586 }
1587 if (!data().IvarList)
1588 data().IvarList = IV;
1589 else
1590 curIvar->setNextIvar(IV);
1591 curIvar = IV;
1592 }
1593
1594 if (!layout.empty()) {
11
Taking true branch
1595 // Order synthesized ivars by their size.
1596 std::stable_sort(layout.begin(), layout.end());
1597 unsigned Ix = 0, EIx = layout.size();
1598 if (!data().IvarList) {
12
Assuming the condition is false
13
Taking false branch
1599 data().IvarList = layout[0].Ivar; Ix++;
1600 curIvar = data().IvarList;
1601 }
1602 for ( ; Ix != EIx; curIvar = layout[Ix].Ivar, Ix++)
14
Assuming 'Ix' is not equal to 'EIx'
15
Loop condition is true. Entering loop body
1603 curIvar->setNextIvar(layout[Ix].Ivar);
16
Called C++ object pointer is null
1604 }
1605 }
1606 }
1607 return data().IvarList;
1608}
1609
1610/// FindCategoryDeclaration - Finds category declaration in the list of
1611/// categories for this class and returns it. Name of the category is passed
1612/// in 'CategoryId'. If category not found, return 0;
1613///
1614ObjCCategoryDecl *
1615ObjCInterfaceDecl::FindCategoryDeclaration(IdentifierInfo *CategoryId) const {
1616 // FIXME: Should make sure no callers ever do this.
1617 if (!hasDefinition())
1618 return nullptr;
1619
1620 if (data().ExternallyCompleted)
1621 LoadExternalDefinition();
1622
1623 for (auto *Cat : visible_categories())
1624 if (Cat->getIdentifier() == CategoryId)
1625 return Cat;
1626
1627 return nullptr;
1628}
1629
1630ObjCMethodDecl *
1631ObjCInterfaceDecl::getCategoryInstanceMethod(Selector Sel) const {
1632 for (const auto *Cat : visible_categories()) {
1633 if (ObjCCategoryImplDecl *Impl = Cat->getImplementation())
1634 if (ObjCMethodDecl *MD = Impl->getInstanceMethod(Sel))
1635 return MD;
1636 }
1637
1638 return nullptr;
1639}
1640
1641ObjCMethodDecl *ObjCInterfaceDecl::getCategoryClassMethod(Selector Sel) const {
1642 for (const auto *Cat : visible_categories()) {
1643 if (ObjCCategoryImplDecl *Impl = Cat->getImplementation())
1644 if (ObjCMethodDecl *MD = Impl->getClassMethod(Sel))
1645 return MD;
1646 }
1647
1648 return nullptr;
1649}
1650
1651/// ClassImplementsProtocol - Checks that 'lProto' protocol
1652/// has been implemented in IDecl class, its super class or categories (if
1653/// lookupCategory is true).
1654bool ObjCInterfaceDecl::ClassImplementsProtocol(ObjCProtocolDecl *lProto,
1655 bool lookupCategory,
1656 bool RHSIsQualifiedID) {
1657 if (!hasDefinition())
1658 return false;
1659
1660 ObjCInterfaceDecl *IDecl = this;
1661 // 1st, look up the class.
1662 for (auto *PI : IDecl->protocols()){
1663 if (getASTContext().ProtocolCompatibleWithProtocol(lProto, PI))
1664 return true;
1665 // This is dubious and is added to be compatible with gcc. In gcc, it is
1666 // also allowed assigning a protocol-qualified 'id' type to a LHS object
1667 // when protocol in qualified LHS is in list of protocols in the rhs 'id'
1668 // object. This IMO, should be a bug.
1669 // FIXME: Treat this as an extension, and flag this as an error when GCC
1670 // extensions are not enabled.
1671 if (RHSIsQualifiedID &&
1672 getASTContext().ProtocolCompatibleWithProtocol(PI, lProto))
1673 return true;
1674 }
1675
1676 // 2nd, look up the category.
1677 if (lookupCategory)
1678 for (const auto *Cat : visible_categories()) {
1679 for (auto *PI : Cat->protocols())
1680 if (getASTContext().ProtocolCompatibleWithProtocol(lProto, PI))
1681 return true;
1682 }
1683
1684 // 3rd, look up the super class(s)
1685 if (IDecl->getSuperClass())
1686 return
1687 IDecl->getSuperClass()->ClassImplementsProtocol(lProto, lookupCategory,
1688 RHSIsQualifiedID);
1689
1690 return false;
1691}
1692
1693//===----------------------------------------------------------------------===//
1694// ObjCIvarDecl
1695//===----------------------------------------------------------------------===//
1696
1697void ObjCIvarDecl::anchor() { }
1698
1699ObjCIvarDecl *ObjCIvarDecl::Create(ASTContext &C, ObjCContainerDecl *DC,
1700 SourceLocation StartLoc,
1701 SourceLocation IdLoc, IdentifierInfo *Id,
1702 QualType T, TypeSourceInfo *TInfo,
1703 AccessControl ac, Expr *BW,
1704 bool synthesized) {
1705 if (DC) {
1706 // Ivar's can only appear in interfaces, implementations (via synthesized
1707 // properties), and class extensions (via direct declaration, or synthesized
1708 // properties).
1709 //
1710 // FIXME: This should really be asserting this:
1711 // (isa<ObjCCategoryDecl>(DC) &&
1712 // cast<ObjCCategoryDecl>(DC)->IsClassExtension()))
1713 // but unfortunately we sometimes place ivars into non-class extension
1714 // categories on error. This breaks an AST invariant, and should not be
1715 // fixed.
1716 assert((isa<ObjCInterfaceDecl>(DC) || isa<ObjCImplementationDecl>(DC) ||(((isa<ObjCInterfaceDecl>(DC) || isa<ObjCImplementationDecl
>(DC) || isa<ObjCCategoryDecl>(DC)) && "Invalid ivar decl context!"
) ? static_cast<void> (0) : __assert_fail ("(isa<ObjCInterfaceDecl>(DC) || isa<ObjCImplementationDecl>(DC) || isa<ObjCCategoryDecl>(DC)) && \"Invalid ivar decl context!\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1718, __PRETTY_FUNCTION__))
1717 isa<ObjCCategoryDecl>(DC)) &&(((isa<ObjCInterfaceDecl>(DC) || isa<ObjCImplementationDecl
>(DC) || isa<ObjCCategoryDecl>(DC)) && "Invalid ivar decl context!"
) ? static_cast<void> (0) : __assert_fail ("(isa<ObjCInterfaceDecl>(DC) || isa<ObjCImplementationDecl>(DC) || isa<ObjCCategoryDecl>(DC)) && \"Invalid ivar decl context!\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1718, __PRETTY_FUNCTION__))
1718 "Invalid ivar decl context!")(((isa<ObjCInterfaceDecl>(DC) || isa<ObjCImplementationDecl
>(DC) || isa<ObjCCategoryDecl>(DC)) && "Invalid ivar decl context!"
) ? static_cast<void> (0) : __assert_fail ("(isa<ObjCInterfaceDecl>(DC) || isa<ObjCImplementationDecl>(DC) || isa<ObjCCategoryDecl>(DC)) && \"Invalid ivar decl context!\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1718, __PRETTY_FUNCTION__))
;
1719 // Once a new ivar is created in any of class/class-extension/implementation
1720 // decl contexts, the previously built IvarList must be rebuilt.
1721 ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(DC);
1722 if (!ID) {
1723 if (ObjCImplementationDecl *IM = dyn_cast<ObjCImplementationDecl>(DC))
1724 ID = IM->getClassInterface();
1725 else
1726 ID = cast<ObjCCategoryDecl>(DC)->getClassInterface();
1727 }
1728 ID->setIvarList(nullptr);
1729 }
1730
1731 return new (C, DC) ObjCIvarDecl(DC, StartLoc, IdLoc, Id, T, TInfo, ac, BW,
1732 synthesized);
1733}
1734
1735ObjCIvarDecl *ObjCIvarDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
1736 return new (C, ID) ObjCIvarDecl(nullptr, SourceLocation(), SourceLocation(),
1737 nullptr, QualType(), nullptr,
1738 ObjCIvarDecl::None, nullptr, false);
1739}
1740
1741const ObjCInterfaceDecl *ObjCIvarDecl::getContainingInterface() const {
1742 const ObjCContainerDecl *DC = cast<ObjCContainerDecl>(getDeclContext());
1743
1744 switch (DC->getKind()) {
1745 default:
1746 case ObjCCategoryImpl:
1747 case ObjCProtocol:
1748 llvm_unreachable("invalid ivar container!")::llvm::llvm_unreachable_internal("invalid ivar container!", "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1748)
;
1749
1750 // Ivars can only appear in class extension categories.
1751 case ObjCCategory: {
1752 const ObjCCategoryDecl *CD = cast<ObjCCategoryDecl>(DC);
1753 assert(CD->IsClassExtension() && "invalid container for ivar!")((CD->IsClassExtension() && "invalid container for ivar!"
) ? static_cast<void> (0) : __assert_fail ("CD->IsClassExtension() && \"invalid container for ivar!\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1753, __PRETTY_FUNCTION__))
;
1754 return CD->getClassInterface();
1755 }
1756
1757 case ObjCImplementation:
1758 return cast<ObjCImplementationDecl>(DC)->getClassInterface();
1759
1760 case ObjCInterface:
1761 return cast<ObjCInterfaceDecl>(DC);
1762 }
1763}
1764
1765QualType ObjCIvarDecl::getUsageType(QualType objectType) const {
1766 return getType().substObjCMemberType(objectType, getDeclContext(),
1767 ObjCSubstitutionContext::Property);
1768}
1769
1770//===----------------------------------------------------------------------===//
1771// ObjCAtDefsFieldDecl
1772//===----------------------------------------------------------------------===//
1773
1774void ObjCAtDefsFieldDecl::anchor() { }
1775
1776ObjCAtDefsFieldDecl
1777*ObjCAtDefsFieldDecl::Create(ASTContext &C, DeclContext *DC,
1778 SourceLocation StartLoc, SourceLocation IdLoc,
1779 IdentifierInfo *Id, QualType T, Expr *BW) {
1780 return new (C, DC) ObjCAtDefsFieldDecl(DC, StartLoc, IdLoc, Id, T, BW);
1781}
1782
1783ObjCAtDefsFieldDecl *ObjCAtDefsFieldDecl::CreateDeserialized(ASTContext &C,
1784 unsigned ID) {
1785 return new (C, ID) ObjCAtDefsFieldDecl(nullptr, SourceLocation(),
1786 SourceLocation(), nullptr, QualType(),
1787 nullptr);
1788}
1789
1790//===----------------------------------------------------------------------===//
1791// ObjCProtocolDecl
1792//===----------------------------------------------------------------------===//
1793
1794void ObjCProtocolDecl::anchor() { }
1795
1796ObjCProtocolDecl::ObjCProtocolDecl(ASTContext &C, DeclContext *DC,
1797 IdentifierInfo *Id, SourceLocation nameLoc,
1798 SourceLocation atStartLoc,
1799 ObjCProtocolDecl *PrevDecl)
1800 : ObjCContainerDecl(ObjCProtocol, DC, Id, nameLoc, atStartLoc),
1801 redeclarable_base(C), Data() {
1802 setPreviousDecl(PrevDecl);
1803 if (PrevDecl)
1804 Data = PrevDecl->Data;
1805}
1806
1807ObjCProtocolDecl *ObjCProtocolDecl::Create(ASTContext &C, DeclContext *DC,
1808 IdentifierInfo *Id,
1809 SourceLocation nameLoc,
1810 SourceLocation atStartLoc,
1811 ObjCProtocolDecl *PrevDecl) {
1812 ObjCProtocolDecl *Result =
1813 new (C, DC) ObjCProtocolDecl(C, DC, Id, nameLoc, atStartLoc, PrevDecl);
1814 Result->Data.setInt(!C.getLangOpts().Modules);
1815 return Result;
1816}
1817
1818ObjCProtocolDecl *ObjCProtocolDecl::CreateDeserialized(ASTContext &C,
1819 unsigned ID) {
1820 ObjCProtocolDecl *Result =
1821 new (C, ID) ObjCProtocolDecl(C, nullptr, nullptr, SourceLocation(),
1822 SourceLocation(), nullptr);
1823 Result->Data.setInt(!C.getLangOpts().Modules);
1824 return Result;
1825}
1826
1827ObjCProtocolDecl *ObjCProtocolDecl::lookupProtocolNamed(IdentifierInfo *Name) {
1828 ObjCProtocolDecl *PDecl = this;
1829
1830 if (Name == getIdentifier())
1831 return PDecl;
1832
1833 for (auto *I : protocols())
1834 if ((PDecl = I->lookupProtocolNamed(Name)))
1835 return PDecl;
1836
1837 return nullptr;
1838}
1839
1840// lookupMethod - Lookup a instance/class method in the protocol and protocols
1841// it inherited.
1842ObjCMethodDecl *ObjCProtocolDecl::lookupMethod(Selector Sel,
1843 bool isInstance) const {
1844 ObjCMethodDecl *MethodDecl = nullptr;
1845
1846 // If there is no definition or the definition is hidden, we don't find
1847 // anything.
1848 const ObjCProtocolDecl *Def = getDefinition();
1849 if (!Def || Def->isHidden())
1850 return nullptr;
1851
1852 if ((MethodDecl = getMethod(Sel, isInstance)))
1853 return MethodDecl;
1854
1855 for (const auto *I : protocols())
1856 if ((MethodDecl = I->lookupMethod(Sel, isInstance)))
1857 return MethodDecl;
1858 return nullptr;
1859}
1860
1861void ObjCProtocolDecl::allocateDefinitionData() {
1862 assert(!Data.getPointer() && "Protocol already has a definition!")((!Data.getPointer() && "Protocol already has a definition!"
) ? static_cast<void> (0) : __assert_fail ("!Data.getPointer() && \"Protocol already has a definition!\""
, "/tmp/buildd/llvm-toolchain-snapshot-5.0~svn306458/tools/clang/lib/AST/DeclObjC.cpp"
, 1862, __PRETTY_FUNCTION__))
;
1863 Data.setPointer(new (getASTContext()) DefinitionData);
1864 Data.getPointer()->Definition = this;
1865}
1866
1867void ObjCProtocolDecl::startDefinition() {
1868 allocateDefinitionData();
1869
1870 // Update all of the declarations with a pointer to the definition.
1871 for (auto RD : redecls())
1872 RD->Data = this->Data;
1873}
1874
1875void ObjCProtocolDecl::collectPropertiesToImplement(PropertyMap &PM,
1876 PropertyDeclOrder &PO) const {
1877
1878 if (const ObjCProtocolDecl *PDecl = getDefinition()) {
1879 for (auto *Prop : PDecl->properties()) {
1880 // Insert into PM if not there already.
1881 PM.insert(std::make_pair(
1882 std::make_pair(Prop->getIdentifier(), Prop->isClassProperty()),
1883 Prop));
1884 PO.push_back(Prop);
1885 }
1886 // Scan through protocol's protocols.
1887 for (const auto *PI : PDecl->protocols())
1888 PI->collectPropertiesToImplement(PM, PO);
1889 }
1890}
1891
1892
1893void ObjCProtocolDecl::collectInheritedProtocolProperties(
1894 const ObjCPropertyDecl *Property,
1895 ProtocolPropertyMap &PM) const {
1896 if (const ObjCProtocolDecl *PDecl = getDefinition()) {
1897 bool MatchFound = false;
1898 for (auto *Prop : PDecl->properties()) {
1899 if (Prop == Property)
1900 continue;
1901 if (Prop->getIdentifier() == Property->getIdentifier()) {
1902 PM[PDecl] = Prop;
1903 MatchFound = true;
1904 break;
1905 }
1906 }
1907 // Scan through protocol's protocols which did not have a matching property.
1908 if (!MatchFound)
1909 for (const auto *PI : PDecl->protocols())
1910 PI->collectInheritedProtocolProperties(Property, PM);
1911 }
1912}
1913
1914StringRef
1915ObjCProtocolDecl::getObjCRuntimeNameAsString() const {
1916 if (ObjCRuntimeNameAttr *ObjCRTName = getAttr<ObjCRuntimeNameAttr>())
1917 return ObjCRTName->getMetadataName();
1918
1919 return getName();
1920}
1921
1922//===----------------------------------------------------------------------===//
1923// ObjCCategoryDecl
1924//===----------------------------------------------------------------------===//
1925
1926void ObjCCategoryDecl::anchor() { }
1927
1928ObjCCategoryDecl::ObjCCategoryDecl(DeclContext *DC, SourceLocation AtLoc,
1929 SourceLocation ClassNameLoc,
1930 SourceLocation CategoryNameLoc,
1931 IdentifierInfo *Id, ObjCInterfaceDecl *IDecl,
1932 ObjCTypeParamList *typeParamList,
1933 SourceLocation IvarLBraceLoc,
1934 SourceLocation IvarRBraceLoc)
1935 : ObjCContainerDecl(ObjCCategory, DC, Id, ClassNameLoc, AtLoc),
1936 ClassInterface(IDecl), TypeParamList(nullptr),
1937 NextClassCategory(nullptr), CategoryNameLoc(CategoryNameLoc),
1938 IvarLBraceLoc(IvarLBraceLoc), IvarRBraceLoc(IvarRBraceLoc)
1939{
1940 setTypeParamList(typeParamList);
1941}
1942
1943ObjCCategoryDecl *ObjCCategoryDecl::Create(ASTContext &C, DeclContext *DC,
1944 SourceLocation AtLoc,
1945 SourceLocation ClassNameLoc,
1946 SourceLocation CategoryNameLoc,
1947 IdentifierInfo *Id,
1948 ObjCInterfaceDecl *IDecl,
1949 ObjCTypeParamList *typeParamList,
1950 SourceLocation IvarLBraceLoc,
1951 SourceLocation IvarRBraceLoc) {
1952 ObjCCategoryDecl *CatDecl =
1953 new (C, DC) ObjCCategoryDecl(DC, AtLoc, ClassNameLoc, CategoryNameLoc, Id,
1954 IDecl, typeParamList, IvarLBraceLoc,
1955 IvarRBraceLoc);
1956 if (IDecl) {
1957 // Link this category into its class's category list.
1958 CatDecl->NextClassCategory = IDecl->getCategoryListRaw();
1959 if (IDecl->hasDefinition()) {
1960 IDecl->setCategoryListRaw(CatDecl);
1961 if (ASTMutationListener *L = C.getASTMutationListener())
1962 L->AddedObjCCategoryToInterface(CatDecl, IDecl);
1963 }
1964 }
1965
1966 return CatDecl;
1967}
1968
1969ObjCCategoryDecl *ObjCCategoryDecl::CreateDeserialized(ASTContext &C,
1970 unsigned ID) {
1971 return new (C, ID) ObjCCategoryDecl(nullptr, SourceLocation(),
1972 SourceLocation(), SourceLocation(),
1973 nullptr, nullptr, nullptr);
1974}
1975
1976ObjCCategoryImplDecl *ObjCCategoryDecl::getImplementation() const {
1977 return getASTContext().getObjCImplementation(
1978 const_cast<ObjCCategoryDecl*>(this));
1979}
1980
1981void ObjCCategoryDecl::setImplementation(ObjCCategoryImplDecl *ImplD) {
1982 getASTContext().setObjCImplementation(this, ImplD);
1983}
1984
1985void ObjCCategoryDecl::setTypeParamList(ObjCTypeParamList *TPL) {
1986 TypeParamList = TPL;
1987 if (!TPL)
1988 return;
1989 // Set the declaration context of each of the type parameters.
1990 for (auto typeParam : *TypeParamList)
1991 typeParam->setDeclContext(this);
1992}
1993
1994
1995//===----------------------------------------------------------------------===//
1996// ObjCCategoryImplDecl
1997//===----------------------------------------------------------------------===//
1998
1999void ObjCCategoryImplDecl::anchor() { }
2000
2001ObjCCategoryImplDecl *
2002ObjCCategoryImplDecl::Create(ASTContext &C, DeclContext *DC,
2003 IdentifierInfo *Id,
2004 ObjCInterfaceDecl *ClassInterface,
2005 SourceLocation nameLoc,
2006 SourceLocation atStartLoc,
2007 SourceLocation CategoryNameLoc) {
2008 if (ClassInterface && ClassInterface->hasDefinition())
2009 ClassInterface = ClassInterface->getDefinition();
2010 return new (C, DC) ObjCCategoryImplDecl(DC, Id, ClassInterface, nameLoc,
2011 atStartLoc, CategoryNameLoc);
2012}
2013
2014ObjCCategoryImplDecl *ObjCCategoryImplDecl::CreateDeserialized(ASTContext &C,
2015 unsigned ID) {
2016 return new (C, ID) ObjCCategoryImplDecl(nullptr, nullptr, nullptr,
2017 SourceLocation(), SourceLocation(),
2018 SourceLocation());
2019}
2020
2021ObjCCategoryDecl *ObjCCategoryImplDecl::getCategoryDecl() const {
2022 // The class interface might be NULL if we are working with invalid code.
2023 if (const ObjCInterfaceDecl *ID = getClassInterface())
2024 return ID->FindCategoryDeclaration(getIdentifier());
2025 return nullptr;
2026}
2027
2028
2029void ObjCImplDecl::anchor() { }
2030
2031void ObjCImplDecl::addPropertyImplementation(ObjCPropertyImplDecl *property) {
2032 // FIXME: The context should be correct before we get here.
2033 property->setLexicalDeclContext(this);
2034 addDecl(property);
2035}
2036
2037void ObjCImplDecl::setClassInterface(ObjCInterfaceDecl *IFace) {
2038 ASTContext &Ctx = getASTContext();
2039
2040 if (ObjCImplementationDecl *ImplD
2041 = dyn_cast_or_null<ObjCImplementationDecl>(this)) {
2042 if (IFace)
2043 Ctx.setObjCImplementation(IFace, ImplD);
2044
2045 } else if (ObjCCategoryImplDecl *ImplD =
2046 dyn_cast_or_null<ObjCCategoryImplDecl>(this)) {
2047 if (ObjCCategoryDecl *CD = IFace->FindCategoryDeclaration(getIdentifier()))
2048 Ctx.setObjCImplementation(CD, ImplD);
2049 }
2050
2051 ClassInterface = IFace;
2052}
2053
2054/// FindPropertyImplIvarDecl - This method lookup the ivar in the list of
2055/// properties implemented in this \@implementation block and returns
2056/// the implemented property that uses it.
2057///
2058ObjCPropertyImplDecl *ObjCImplDecl::
2059FindPropertyImplIvarDecl(IdentifierInfo *ivarId) const {
2060 for (auto *PID : property_impls())
2061 if (PID->getPropertyIvarDecl() &&
2062 PID->getPropertyIvarDecl()->getIdentifier() == ivarId)
2063 return PID;
2064 return nullptr;
2065}
2066
2067/// FindPropertyImplDecl - This method looks up a previous ObjCPropertyImplDecl
2068/// added to the list of those properties \@synthesized/\@dynamic in this
2069/// category \@implementation block.
2070///
2071ObjCPropertyImplDecl *ObjCImplDecl::
2072FindPropertyImplDecl(IdentifierInfo *Id,
2073 ObjCPropertyQueryKind QueryKind) const {
2074 ObjCPropertyImplDecl *ClassPropImpl = nullptr;
2075 for (auto *PID : property_impls())
2076 // If queryKind is unknown, we return the instance property if one
2077 // exists; otherwise we return the class property.
2078 if (PID->getPropertyDecl()->getIdentifier() == Id) {
2079 if ((QueryKind == ObjCPropertyQueryKind::OBJC_PR_query_unknown &&
2080 !PID->getPropertyDecl()->isClassProperty()) ||
2081 (QueryKind == ObjCPropertyQueryKind::OBJC_PR_query_class &&
2082 PID->getPropertyDecl()->isClassProperty()) ||
2083 (QueryKind == ObjCPropertyQueryKind::OBJC_PR_query_instance &&
2084 !PID->getPropertyDecl()->isClassProperty()))
2085 return PID;
2086
2087 if (PID->getPropertyDecl()->isClassProperty())
2088 ClassPropImpl = PID;
2089 }
2090
2091 if (QueryKind == ObjCPropertyQueryKind::OBJC_PR_query_unknown)
2092 // We can't find the instance property, return the class property.
2093 return ClassPropImpl;
2094
2095 return nullptr;
2096}
2097
2098raw_ostream &clang::operator<<(raw_ostream &OS,
2099 const ObjCCategoryImplDecl &CID) {
2100 OS << CID.getName();
2101 return OS;
2102}
2103
2104//===----------------------------------------------------------------------===//
2105// ObjCImplementationDecl
2106//===----------------------------------------------------------------------===//
2107
2108void ObjCImplementationDecl::anchor() { }
2109
2110ObjCImplementationDecl *
2111ObjCImplementationDecl::Create(ASTContext &C, DeclContext *DC,
2112 ObjCInterfaceDecl *ClassInterface,
2113 ObjCInterfaceDecl *SuperDecl,
2114 SourceLocation nameLoc,
2115 SourceLocation atStartLoc,
2116 SourceLocation superLoc,
2117 SourceLocation IvarLBraceLoc,
2118 SourceLocation IvarRBraceLoc) {
2119 if (ClassInterface && ClassInterface->hasDefinition())
2120 ClassInterface = ClassInterface->getDefinition();
2121 return new (C, DC) ObjCImplementationDecl(DC, ClassInterface, SuperDecl,
2122 nameLoc, atStartLoc, superLoc,
2123 IvarLBraceLoc, IvarRBraceLoc);
2124}
2125
2126ObjCImplementationDecl *
2127ObjCImplementationDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2128 return new (C, ID) ObjCImplementationDecl(nullptr, nullptr, nullptr,
2129 SourceLocation(), SourceLocation());
2130}
2131
2132void ObjCImplementationDecl::setIvarInitializers(ASTContext &C,
2133 CXXCtorInitializer ** initializers,
2134 unsigned numInitializers) {
2135 if (numInitializers > 0) {
2136 NumIvarInitializers = numInitializers;
2137 CXXCtorInitializer **ivarInitializers =
2138 new (C) CXXCtorInitializer*[NumIvarInitializers];
2139 memcpy(ivarInitializers, initializers,
2140 numInitializers * sizeof(CXXCtorInitializer*));
2141 IvarInitializers = ivarInitializers;
2142 }
2143}
2144
2145ObjCImplementationDecl::init_const_iterator
2146ObjCImplementationDecl::init_begin() const {
2147 return IvarInitializers.get(getASTContext().getExternalSource());
2148}
2149
2150raw_ostream &clang::operator<<(raw_ostream &OS,
2151 const ObjCImplementationDecl &ID) {
2152 OS << ID.getName();
2153 return OS;
2154}
2155
2156//===----------------------------------------------------------------------===//
2157// ObjCCompatibleAliasDecl
2158//===----------------------------------------------------------------------===//
2159
2160void ObjCCompatibleAliasDecl::anchor() { }
2161
2162ObjCCompatibleAliasDecl *
2163ObjCCompatibleAliasDecl::Create(ASTContext &C, DeclContext *DC,
2164 SourceLocation L,
2165 IdentifierInfo *Id,
2166 ObjCInterfaceDecl* AliasedClass) {
2167 return new (C, DC) ObjCCompatibleAliasDecl(DC, L, Id, AliasedClass);
2168}
2169
2170ObjCCompatibleAliasDecl *
2171ObjCCompatibleAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2172 return new (C, ID) ObjCCompatibleAliasDecl(nullptr, SourceLocation(),
2173 nullptr, nullptr);
2174}
2175
2176//===----------------------------------------------------------------------===//
2177// ObjCPropertyDecl
2178//===----------------------------------------------------------------------===//
2179
2180void ObjCPropertyDecl::anchor() { }
2181
2182ObjCPropertyDecl *ObjCPropertyDecl::Create(ASTContext &C, DeclContext *DC,
2183 SourceLocation L,
2184 IdentifierInfo *Id,
2185 SourceLocation AtLoc,
2186 SourceLocation LParenLoc,
2187 QualType T,
2188 TypeSourceInfo *TSI,
2189 PropertyControl propControl) {
2190 return new (C, DC) ObjCPropertyDecl(DC, L, Id, AtLoc, LParenLoc, T, TSI,
2191 propControl);
2192}
2193
2194ObjCPropertyDecl *ObjCPropertyDecl::CreateDeserialized(ASTContext &C,
2195 unsigned ID) {
2196 return new (C, ID) ObjCPropertyDecl(nullptr, SourceLocation(), nullptr,
2197 SourceLocation(), SourceLocation(),
2198 QualType(), nullptr, None);
2199}
2200
2201QualType ObjCPropertyDecl::getUsageType(QualType objectType) const {
2202 return DeclType.substObjCMemberType(objectType, getDeclContext(),
2203 ObjCSubstitutionContext::Property);
2204}
2205
2206//===----------------------------------------------------------------------===//
2207// ObjCPropertyImplDecl
2208//===----------------------------------------------------------------------===//
2209
2210ObjCPropertyImplDecl *ObjCPropertyImplDecl::Create(ASTContext &C,
2211 DeclContext *DC,
2212 SourceLocation atLoc,
2213 SourceLocation L,
2214 ObjCPropertyDecl *property,
2215 Kind PK,
2216 ObjCIvarDecl *ivar,
2217 SourceLocation ivarLoc) {
2218 return new (C, DC) ObjCPropertyImplDecl(DC, atLoc, L, property, PK, ivar,
2219 ivarLoc);
2220}
2221
2222ObjCPropertyImplDecl *ObjCPropertyImplDecl::CreateDeserialized(ASTContext &C,
2223 unsigned ID) {
2224 return new (C, ID) ObjCPropertyImplDecl(nullptr, SourceLocation(),
2225 SourceLocation(), nullptr, Dynamic,
2226 nullptr, SourceLocation());
2227}
2228
2229SourceRange ObjCPropertyImplDecl::getSourceRange() const {
2230 SourceLocation EndLoc = getLocation();
2231 if (IvarLoc.isValid())
2232 EndLoc = IvarLoc;
2233
2234 return SourceRange(AtLoc, EndLoc);
2235}