Bug Summary

File:tools/clang/lib/AST/DeclObjC.cpp
Warning:line 1651, column 11
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name DeclObjC.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-9/lib/clang/9.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST -I /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/include -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/include -I /build/llvm-toolchain-snapshot-9~svn362543/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/9.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-9/lib/clang/9.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-9~svn362543/build-llvm/tools/clang/lib/AST -fdebug-prefix-map=/build/llvm-toolchain-snapshot-9~svn362543=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2019-06-05-060531-1271-1 -x c++ /build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp -faddrsig
1//===- DeclObjC.cpp - ObjC Declaration AST Node Implementation ------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the Objective-C related Decl classes.
10//
11//===----------------------------------------------------------------------===//
12
13#include "clang/AST/DeclObjC.h"
14#include "clang/AST/ASTContext.h"
15#include "clang/AST/ASTMutationListener.h"
16#include "clang/AST/Attr.h"
17#include "clang/AST/Decl.h"
18#include "clang/AST/DeclBase.h"
19#include "clang/AST/Stmt.h"
20#include "clang/AST/Type.h"
21#include "clang/AST/TypeLoc.h"
22#include "clang/Basic/IdentifierTable.h"
23#include "clang/Basic/LLVM.h"
24#include "clang/Basic/LangOptions.h"
25#include "clang/Basic/SourceLocation.h"
26#include "llvm/ADT/None.h"
27#include "llvm/ADT/SmallString.h"
28#include "llvm/ADT/SmallVector.h"
29#include "llvm/Support/Casting.h"
30#include "llvm/Support/ErrorHandling.h"
31#include "llvm/Support/raw_ostream.h"
32#include <algorithm>
33#include <cassert>
34#include <cstdint>
35#include <cstring>
36#include <utility>
37
38using namespace clang;
39
40//===----------------------------------------------------------------------===//
41// ObjCListBase
42//===----------------------------------------------------------------------===//
43
44void ObjCListBase::set(void *const* InList, unsigned Elts, ASTContext &Ctx) {
45 List = nullptr;
46 if (Elts == 0) return; // Setting to an empty list is a noop.
47
48 List = new (Ctx) void*[Elts];
49 NumElts = Elts;
50 memcpy(List, InList, sizeof(void*)*Elts);
51}
52
53void ObjCProtocolList::set(ObjCProtocolDecl* const* InList, unsigned Elts,
54 const SourceLocation *Locs, ASTContext &Ctx) {
55 if (Elts == 0)
56 return;
57
58 Locations = new (Ctx) SourceLocation[Elts];
59 memcpy(Locations, Locs, sizeof(SourceLocation) * Elts);
60 set(InList, Elts, Ctx);
61}
62
63//===----------------------------------------------------------------------===//
64// ObjCInterfaceDecl
65//===----------------------------------------------------------------------===//
66
67ObjCContainerDecl::ObjCContainerDecl(Kind DK, DeclContext *DC,
68 IdentifierInfo *Id, SourceLocation nameLoc,
69 SourceLocation atStartLoc)
70 : NamedDecl(DK, DC, nameLoc, Id), DeclContext(DK) {
71 setAtStartLoc(atStartLoc);
72}
73
74void ObjCContainerDecl::anchor() {}
75
76/// getIvarDecl - This method looks up an ivar in this ContextDecl.
77///
78ObjCIvarDecl *
79ObjCContainerDecl::getIvarDecl(IdentifierInfo *Id) const {
80 lookup_result R = lookup(Id);
81 for (lookup_iterator Ivar = R.begin(), IvarEnd = R.end();
82 Ivar != IvarEnd; ++Ivar) {
83 if (auto *ivar = dyn_cast<ObjCIvarDecl>(*Ivar))
84 return ivar;
85 }
86 return nullptr;
87}
88
89// Get the local instance/class method declared in this interface.
90ObjCMethodDecl *
91ObjCContainerDecl::getMethod(Selector Sel, bool isInstance,
92 bool AllowHidden) const {
93 // If this context is a hidden protocol definition, don't find any
94 // methods there.
95 if (const auto *Proto = dyn_cast<ObjCProtocolDecl>(this)) {
96 if (const ObjCProtocolDecl *Def = Proto->getDefinition())
97 if (Def->isHidden() && !AllowHidden)
98 return nullptr;
99 }
100
101 // Since instance & class methods can have the same name, the loop below
102 // ensures we get the correct method.
103 //
104 // @interface Whatever
105 // - (int) class_method;
106 // + (float) class_method;
107 // @end
108 lookup_result R = lookup(Sel);
109 for (lookup_iterator Meth = R.begin(), MethEnd = R.end();
110 Meth != MethEnd; ++Meth) {
111 auto *MD = dyn_cast<ObjCMethodDecl>(*Meth);
112 if (MD && MD->isInstanceMethod() == isInstance)
113 return MD;
114 }
115 return nullptr;
116}
117
118/// This routine returns 'true' if a user declared setter method was
119/// found in the class, its protocols, its super classes or categories.
120/// It also returns 'true' if one of its categories has declared a 'readwrite'
121/// property. This is because, user must provide a setter method for the
122/// category's 'readwrite' property.
123bool ObjCContainerDecl::HasUserDeclaredSetterMethod(
124 const ObjCPropertyDecl *Property) const {
125 Selector Sel = Property->getSetterName();
126 lookup_result R = lookup(Sel);
127 for (lookup_iterator Meth = R.begin(), MethEnd = R.end();
128 Meth != MethEnd; ++Meth) {
129 auto *MD = dyn_cast<ObjCMethodDecl>(*Meth);
130 if (MD && MD->isInstanceMethod() && !MD->isImplicit())
131 return true;
132 }
133
134 if (const auto *ID = dyn_cast<ObjCInterfaceDecl>(this)) {
135 // Also look into categories, including class extensions, looking
136 // for a user declared instance method.
137 for (const auto *Cat : ID->visible_categories()) {
138 if (ObjCMethodDecl *MD = Cat->getInstanceMethod(Sel))
139 if (!MD->isImplicit())
140 return true;
141 if (Cat->IsClassExtension())
142 continue;
143 // Also search through the categories looking for a 'readwrite'
144 // declaration of this property. If one found, presumably a setter will
145 // be provided (properties declared in categories will not get
146 // auto-synthesized).
147 for (const auto *P : Cat->properties())
148 if (P->getIdentifier() == Property->getIdentifier()) {
149 if (P->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_readwrite)
150 return true;
151 break;
152 }
153 }
154
155 // Also look into protocols, for a user declared instance method.
156 for (const auto *Proto : ID->all_referenced_protocols())
157 if (Proto->HasUserDeclaredSetterMethod(Property))
158 return true;
159
160 // And in its super class.
161 ObjCInterfaceDecl *OSC = ID->getSuperClass();
162 while (OSC) {
163 if (OSC->HasUserDeclaredSetterMethod(Property))
164 return true;
165 OSC = OSC->getSuperClass();
166 }
167 }
168 if (const auto *PD = dyn_cast<ObjCProtocolDecl>(this))
169 for (const auto *PI : PD->protocols())
170 if (PI->HasUserDeclaredSetterMethod(Property))
171 return true;
172 return false;
173}
174
175ObjCPropertyDecl *
176ObjCPropertyDecl::findPropertyDecl(const DeclContext *DC,
177 const IdentifierInfo *propertyID,
178 ObjCPropertyQueryKind queryKind) {
179 // If this context is a hidden protocol definition, don't find any
180 // property.
181 if (const auto *Proto = dyn_cast<ObjCProtocolDecl>(DC)) {
182 if (const ObjCProtocolDecl *Def = Proto->getDefinition())
183 if (Def->isHidden())
184 return nullptr;
185 }
186
187 // If context is class, then lookup property in its visible extensions.
188 // This comes before property is looked up in primary class.
189 if (auto *IDecl = dyn_cast<ObjCInterfaceDecl>(DC)) {
190 for (const auto *Ext : IDecl->visible_extensions())
191 if (ObjCPropertyDecl *PD = ObjCPropertyDecl::findPropertyDecl(Ext,
192 propertyID,
193 queryKind))
194 return PD;
195 }
196
197 DeclContext::lookup_result R = DC->lookup(propertyID);
198 ObjCPropertyDecl *classProp = nullptr;
199 for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E;
200 ++I)
201 if (auto *PD = dyn_cast<ObjCPropertyDecl>(*I)) {
202 // If queryKind is unknown, we return the instance property if one
203 // exists; otherwise we return the class property.
204 if ((queryKind == ObjCPropertyQueryKind::OBJC_PR_query_unknown &&
205 !PD->isClassProperty()) ||
206 (queryKind == ObjCPropertyQueryKind::OBJC_PR_query_class &&
207 PD->isClassProperty()) ||
208 (queryKind == ObjCPropertyQueryKind::OBJC_PR_query_instance &&
209 !PD->isClassProperty()))
210 return PD;
211
212 if (PD->isClassProperty())
213 classProp = PD;
214 }
215
216 if (queryKind == ObjCPropertyQueryKind::OBJC_PR_query_unknown)
217 // We can't find the instance property, return the class property.
218 return classProp;
219
220 return nullptr;
221}
222
223IdentifierInfo *
224ObjCPropertyDecl::getDefaultSynthIvarName(ASTContext &Ctx) const {
225 SmallString<128> ivarName;
226 {
227 llvm::raw_svector_ostream os(ivarName);
228 os << '_' << getIdentifier()->getName();
229 }
230 return &Ctx.Idents.get(ivarName.str());
231}
232
233/// FindPropertyDeclaration - Finds declaration of the property given its name
234/// in 'PropertyId' and returns it. It returns 0, if not found.
235ObjCPropertyDecl *ObjCContainerDecl::FindPropertyDeclaration(
236 const IdentifierInfo *PropertyId,
237 ObjCPropertyQueryKind QueryKind) const {
238 // Don't find properties within hidden protocol definitions.
239 if (const auto *Proto = dyn_cast<ObjCProtocolDecl>(this)) {
240 if (const ObjCProtocolDecl *Def = Proto->getDefinition())
241 if (Def->isHidden())
242 return nullptr;
243 }
244
245 // Search the extensions of a class first; they override what's in
246 // the class itself.
247 if (const auto *ClassDecl = dyn_cast<ObjCInterfaceDecl>(this)) {
248 for (const auto *Ext : ClassDecl->visible_extensions()) {
249 if (auto *P = Ext->FindPropertyDeclaration(PropertyId, QueryKind))
250 return P;
251 }
252 }
253
254 if (ObjCPropertyDecl *PD =
255 ObjCPropertyDecl::findPropertyDecl(cast<DeclContext>(this), PropertyId,
256 QueryKind))
257 return PD;
258
259 switch (getKind()) {
260 default:
261 break;
262 case Decl::ObjCProtocol: {
263 const auto *PID = cast<ObjCProtocolDecl>(this);
264 for (const auto *I : PID->protocols())
265 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId,
266 QueryKind))
267 return P;
268 break;
269 }
270 case Decl::ObjCInterface: {
271 const auto *OID = cast<ObjCInterfaceDecl>(this);
272 // Look through categories (but not extensions; they were handled above).
273 for (const auto *Cat : OID->visible_categories()) {
274 if (!Cat->IsClassExtension())
275 if (ObjCPropertyDecl *P = Cat->FindPropertyDeclaration(
276 PropertyId, QueryKind))
277 return P;
278 }
279
280 // Look through protocols.
281 for (const auto *I : OID->all_referenced_protocols())
282 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId,
283 QueryKind))
284 return P;
285
286 // Finally, check the super class.
287 if (const ObjCInterfaceDecl *superClass = OID->getSuperClass())
288 return superClass->FindPropertyDeclaration(PropertyId, QueryKind);
289 break;
290 }
291 case Decl::ObjCCategory: {
292 const auto *OCD = cast<ObjCCategoryDecl>(this);
293 // Look through protocols.
294 if (!OCD->IsClassExtension())
295 for (const auto *I : OCD->protocols())
296 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId,
297 QueryKind))
298 return P;
299 break;
300 }
301 }
302 return nullptr;
303}
304
305void ObjCInterfaceDecl::anchor() {}
306
307ObjCTypeParamList *ObjCInterfaceDecl::getTypeParamList() const {
308 // If this particular declaration has a type parameter list, return it.
309 if (ObjCTypeParamList *written = getTypeParamListAsWritten())
310 return written;
311
312 // If there is a definition, return its type parameter list.
313 if (const ObjCInterfaceDecl *def = getDefinition())
314 return def->getTypeParamListAsWritten();
315
316 // Otherwise, look at previous declarations to determine whether any
317 // of them has a type parameter list, skipping over those
318 // declarations that do not.
319 for (const ObjCInterfaceDecl *decl = getMostRecentDecl(); decl;
320 decl = decl->getPreviousDecl()) {
321 if (ObjCTypeParamList *written = decl->getTypeParamListAsWritten())
322 return written;
323 }
324
325 return nullptr;
326}
327
328void ObjCInterfaceDecl::setTypeParamList(ObjCTypeParamList *TPL) {
329 TypeParamList = TPL;
330 if (!TPL)
331 return;
332 // Set the declaration context of each of the type parameters.
333 for (auto *typeParam : *TypeParamList)
334 typeParam->setDeclContext(this);
335}
336
337ObjCInterfaceDecl *ObjCInterfaceDecl::getSuperClass() const {
338 // FIXME: Should make sure no callers ever do this.
339 if (!hasDefinition())
340 return nullptr;
341
342 if (data().ExternallyCompleted)
343 LoadExternalDefinition();
344
345 if (const ObjCObjectType *superType = getSuperClassType()) {
346 if (ObjCInterfaceDecl *superDecl = superType->getInterface()) {
347 if (ObjCInterfaceDecl *superDef = superDecl->getDefinition())
348 return superDef;
349
350 return superDecl;
351 }
352 }
353
354 return nullptr;
355}
356
357SourceLocation ObjCInterfaceDecl::getSuperClassLoc() const {
358 if (TypeSourceInfo *superTInfo = getSuperClassTInfo())
359 return superTInfo->getTypeLoc().getBeginLoc();
360
361 return SourceLocation();
362}
363
364/// FindPropertyVisibleInPrimaryClass - Finds declaration of the property
365/// with name 'PropertyId' in the primary class; including those in protocols
366/// (direct or indirect) used by the primary class.
367ObjCPropertyDecl *
368ObjCInterfaceDecl::FindPropertyVisibleInPrimaryClass(
369 IdentifierInfo *PropertyId,
370 ObjCPropertyQueryKind QueryKind) const {
371 // FIXME: Should make sure no callers ever do this.
372 if (!hasDefinition())
373 return nullptr;
374
375 if (data().ExternallyCompleted)
376 LoadExternalDefinition();
377
378 if (ObjCPropertyDecl *PD =
379 ObjCPropertyDecl::findPropertyDecl(cast<DeclContext>(this), PropertyId,
380 QueryKind))
381 return PD;
382
383 // Look through protocols.
384 for (const auto *I : all_referenced_protocols())
385 if (ObjCPropertyDecl *P = I->FindPropertyDeclaration(PropertyId,
386 QueryKind))
387 return P;
388
389 return nullptr;
390}
391
392void ObjCInterfaceDecl::collectPropertiesToImplement(PropertyMap &PM,
393 PropertyDeclOrder &PO) const {
394 for (auto *Prop : properties()) {
395 PM[std::make_pair(Prop->getIdentifier(), Prop->isClassProperty())] = Prop;
396 PO.push_back(Prop);
397 }
398 for (const auto *Ext : known_extensions()) {
399 const ObjCCategoryDecl *ClassExt = Ext;
400 for (auto *Prop : ClassExt->properties()) {
401 PM[std::make_pair(Prop->getIdentifier(), Prop->isClassProperty())] = Prop;
402 PO.push_back(Prop);
403 }
404 }
405 for (const auto *PI : all_referenced_protocols())
406 PI->collectPropertiesToImplement(PM, PO);
407 // Note, the properties declared only in class extensions are still copied
408 // into the main @interface's property list, and therefore we don't
409 // explicitly, have to search class extension properties.
410}
411
412bool ObjCInterfaceDecl::isArcWeakrefUnavailable() const {
413 const ObjCInterfaceDecl *Class = this;
414 while (Class) {
415 if (Class->hasAttr<ArcWeakrefUnavailableAttr>())
416 return true;
417 Class = Class->getSuperClass();
418 }
419 return false;
420}
421
422const ObjCInterfaceDecl *ObjCInterfaceDecl::isObjCRequiresPropertyDefs() const {
423 const ObjCInterfaceDecl *Class = this;
424 while (Class) {
425 if (Class->hasAttr<ObjCRequiresPropertyDefsAttr>())
426 return Class;
427 Class = Class->getSuperClass();
428 }
429 return nullptr;
430}
431
432void ObjCInterfaceDecl::mergeClassExtensionProtocolList(
433 ObjCProtocolDecl *const* ExtList, unsigned ExtNum,
434 ASTContext &C) {
435 if (data().ExternallyCompleted)
436 LoadExternalDefinition();
437
438 if (data().AllReferencedProtocols.empty() &&
439 data().ReferencedProtocols.empty()) {
440 data().AllReferencedProtocols.set(ExtList, ExtNum, C);
441 return;
442 }
443
444 // Check for duplicate protocol in class's protocol list.
445 // This is O(n*m). But it is extremely rare and number of protocols in
446 // class or its extension are very few.
447 SmallVector<ObjCProtocolDecl *, 8> ProtocolRefs;
448 for (unsigned i = 0; i < ExtNum; i++) {
449 bool protocolExists = false;
450 ObjCProtocolDecl *ProtoInExtension = ExtList[i];
451 for (auto *Proto : all_referenced_protocols()) {
452 if (C.ProtocolCompatibleWithProtocol(ProtoInExtension, Proto)) {
453 protocolExists = true;
454 break;
455 }
456 }
457 // Do we want to warn on a protocol in extension class which
458 // already exist in the class? Probably not.
459 if (!protocolExists)
460 ProtocolRefs.push_back(ProtoInExtension);
461 }
462
463 if (ProtocolRefs.empty())
464 return;
465
466 // Merge ProtocolRefs into class's protocol list;
467 ProtocolRefs.append(all_referenced_protocol_begin(),
468 all_referenced_protocol_end());
469
470 data().AllReferencedProtocols.set(ProtocolRefs.data(), ProtocolRefs.size(),C);
471}
472
473const ObjCInterfaceDecl *
474ObjCInterfaceDecl::findInterfaceWithDesignatedInitializers() const {
475 const ObjCInterfaceDecl *IFace = this;
476 while (IFace) {
477 if (IFace->hasDesignatedInitializers())
478 return IFace;
479 if (!IFace->inheritsDesignatedInitializers())
480 break;
481 IFace = IFace->getSuperClass();
482 }
483 return nullptr;
484}
485
486static bool isIntroducingInitializers(const ObjCInterfaceDecl *D) {
487 for (const auto *MD : D->instance_methods()) {
488 if (MD->getMethodFamily() == OMF_init && !MD->isOverriding())
489 return true;
490 }
491 for (const auto *Ext : D->visible_extensions()) {
492 for (const auto *MD : Ext->instance_methods()) {
493 if (MD->getMethodFamily() == OMF_init && !MD->isOverriding())
494 return true;
495 }
496 }
497 if (const auto *ImplD = D->getImplementation()) {
498 for (const auto *MD : ImplD->instance_methods()) {
499 if (MD->getMethodFamily() == OMF_init && !MD->isOverriding())
500 return true;
501 }
502 }
503 return false;
504}
505
506bool ObjCInterfaceDecl::inheritsDesignatedInitializers() const {
507 switch (data().InheritedDesignatedInitializers) {
508 case DefinitionData::IDI_Inherited:
509 return true;
510 case DefinitionData::IDI_NotInherited:
511 return false;
512 case DefinitionData::IDI_Unknown:
513 // If the class introduced initializers we conservatively assume that we
514 // don't know if any of them is a designated initializer to avoid possible
515 // misleading warnings.
516 if (isIntroducingInitializers(this)) {
517 data().InheritedDesignatedInitializers = DefinitionData::IDI_NotInherited;
518 } else {
519 if (auto SuperD = getSuperClass()) {
520 data().InheritedDesignatedInitializers =
521 SuperD->declaresOrInheritsDesignatedInitializers() ?
522 DefinitionData::IDI_Inherited :
523 DefinitionData::IDI_NotInherited;
524 } else {
525 data().InheritedDesignatedInitializers =
526 DefinitionData::IDI_NotInherited;
527 }
528 }
529 assert(data().InheritedDesignatedInitializers((data().InheritedDesignatedInitializers != DefinitionData::IDI_Unknown
) ? static_cast<void> (0) : __assert_fail ("data().InheritedDesignatedInitializers != DefinitionData::IDI_Unknown"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 530, __PRETTY_FUNCTION__))
530 != DefinitionData::IDI_Unknown)((data().InheritedDesignatedInitializers != DefinitionData::IDI_Unknown
) ? static_cast<void> (0) : __assert_fail ("data().InheritedDesignatedInitializers != DefinitionData::IDI_Unknown"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 530, __PRETTY_FUNCTION__))
;
531 return data().InheritedDesignatedInitializers ==
532 DefinitionData::IDI_Inherited;
533 }
534
535 llvm_unreachable("unexpected InheritedDesignatedInitializers value")::llvm::llvm_unreachable_internal("unexpected InheritedDesignatedInitializers value"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 535)
;
536}
537
538void ObjCInterfaceDecl::getDesignatedInitializers(
539 llvm::SmallVectorImpl<const ObjCMethodDecl *> &Methods) const {
540 // Check for a complete definition and recover if not so.
541 if (!isThisDeclarationADefinition())
542 return;
543 if (data().ExternallyCompleted)
544 LoadExternalDefinition();
545
546 const ObjCInterfaceDecl *IFace= findInterfaceWithDesignatedInitializers();
547 if (!IFace)
548 return;
549
550 for (const auto *MD : IFace->instance_methods())
551 if (MD->isThisDeclarationADesignatedInitializer())
552 Methods.push_back(MD);
553 for (const auto *Ext : IFace->visible_extensions()) {
554 for (const auto *MD : Ext->instance_methods())
555 if (MD->isThisDeclarationADesignatedInitializer())
556 Methods.push_back(MD);
557 }
558}
559
560bool ObjCInterfaceDecl::isDesignatedInitializer(Selector Sel,
561 const ObjCMethodDecl **InitMethod) const {
562 bool HasCompleteDef = isThisDeclarationADefinition();
563 // During deserialization the data record for the ObjCInterfaceDecl could
564 // be made invariant by reusing the canonical decl. Take this into account
565 // when checking for the complete definition.
566 if (!HasCompleteDef && getCanonicalDecl()->hasDefinition() &&
567 getCanonicalDecl()->getDefinition() == getDefinition())
568 HasCompleteDef = true;
569
570 // Check for a complete definition and recover if not so.
571 if (!HasCompleteDef)
572 return false;
573
574 if (data().ExternallyCompleted)
575 LoadExternalDefinition();
576
577 const ObjCInterfaceDecl *IFace= findInterfaceWithDesignatedInitializers();
578 if (!IFace)
579 return false;
580
581 if (const ObjCMethodDecl *MD = IFace->getInstanceMethod(Sel)) {
582 if (MD->isThisDeclarationADesignatedInitializer()) {
583 if (InitMethod)
584 *InitMethod = MD;
585 return true;
586 }
587 }
588 for (const auto *Ext : IFace->visible_extensions()) {
589 if (const ObjCMethodDecl *MD = Ext->getInstanceMethod(Sel)) {
590 if (MD->isThisDeclarationADesignatedInitializer()) {
591 if (InitMethod)
592 *InitMethod = MD;
593 return true;
594 }
595 }
596 }
597 return false;
598}
599
600void ObjCInterfaceDecl::allocateDefinitionData() {
601 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\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 601, __PRETTY_FUNCTION__))
;
602 Data.setPointer(new (getASTContext()) DefinitionData());
603 Data.getPointer()->Definition = this;
604
605 // Make the type point at the definition, now that we have one.
606 if (TypeForDecl)
607 cast<ObjCInterfaceType>(TypeForDecl)->Decl = this;
608}
609
610void ObjCInterfaceDecl::startDefinition() {
611 allocateDefinitionData();
612
613 // Update all of the declarations with a pointer to the definition.
614 for (auto *RD : redecls()) {
615 if (RD != this)
616 RD->Data = Data;
617 }
618}
619
620ObjCIvarDecl *ObjCInterfaceDecl::lookupInstanceVariable(IdentifierInfo *ID,
621 ObjCInterfaceDecl *&clsDeclared) {
622 // FIXME: Should make sure no callers ever do this.
623 if (!hasDefinition())
624 return nullptr;
625
626 if (data().ExternallyCompleted)
627 LoadExternalDefinition();
628
629 ObjCInterfaceDecl* ClassDecl = this;
630 while (ClassDecl != nullptr) {
631 if (ObjCIvarDecl *I = ClassDecl->getIvarDecl(ID)) {
632 clsDeclared = ClassDecl;
633 return I;
634 }
635
636 for (const auto *Ext : ClassDecl->visible_extensions()) {
637 if (ObjCIvarDecl *I = Ext->getIvarDecl(ID)) {
638 clsDeclared = ClassDecl;
639 return I;
640 }
641 }
642
643 ClassDecl = ClassDecl->getSuperClass();
644 }
645 return nullptr;
646}
647
648/// lookupInheritedClass - This method returns ObjCInterfaceDecl * of the super
649/// class whose name is passed as argument. If it is not one of the super classes
650/// the it returns NULL.
651ObjCInterfaceDecl *ObjCInterfaceDecl::lookupInheritedClass(
652 const IdentifierInfo*ICName) {
653 // FIXME: Should make sure no callers ever do this.
654 if (!hasDefinition())
655 return nullptr;
656
657 if (data().ExternallyCompleted)
658 LoadExternalDefinition();
659
660 ObjCInterfaceDecl* ClassDecl = this;
661 while (ClassDecl != nullptr) {
662 if (ClassDecl->getIdentifier() == ICName)
663 return ClassDecl;
664 ClassDecl = ClassDecl->getSuperClass();
665 }
666 return nullptr;
667}
668
669ObjCProtocolDecl *
670ObjCInterfaceDecl::lookupNestedProtocol(IdentifierInfo *Name) {
671 for (auto *P : all_referenced_protocols())
672 if (P->lookupProtocolNamed(Name))
673 return P;
674 ObjCInterfaceDecl *SuperClass = getSuperClass();
675 return SuperClass ? SuperClass->lookupNestedProtocol(Name) : nullptr;
676}
677
678/// lookupMethod - This method returns an instance/class method by looking in
679/// the class, its categories, and its super classes (using a linear search).
680/// When argument category "C" is specified, any implicit method found
681/// in this category is ignored.
682ObjCMethodDecl *ObjCInterfaceDecl::lookupMethod(Selector Sel,
683 bool isInstance,
684 bool shallowCategoryLookup,
685 bool followSuper,
686 const ObjCCategoryDecl *C) const
687{
688 // FIXME: Should make sure no callers ever do this.
689 if (!hasDefinition())
690 return nullptr;
691
692 const ObjCInterfaceDecl* ClassDecl = this;
693 ObjCMethodDecl *MethodDecl = nullptr;
694
695 if (data().ExternallyCompleted)
696 LoadExternalDefinition();
697
698 while (ClassDecl) {
699 // 1. Look through primary class.
700 if ((MethodDecl = ClassDecl->getMethod(Sel, isInstance)))
701 return MethodDecl;
702
703 // 2. Didn't find one yet - now look through categories.
704 for (const auto *Cat : ClassDecl->visible_categories())
705 if ((MethodDecl = Cat->getMethod(Sel, isInstance)))
706 if (C != Cat || !MethodDecl->isImplicit())
707 return MethodDecl;
708
709 // 3. Didn't find one yet - look through primary class's protocols.
710 for (const auto *I : ClassDecl->protocols())
711 if ((MethodDecl = I->lookupMethod(Sel, isInstance)))
712 return MethodDecl;
713
714 // 4. Didn't find one yet - now look through categories' protocols
715 if (!shallowCategoryLookup)
716 for (const auto *Cat : ClassDecl->visible_categories()) {
717 // Didn't find one yet - look through protocols.
718 const ObjCList<ObjCProtocolDecl> &Protocols =
719 Cat->getReferencedProtocols();
720 for (auto *Protocol : Protocols)
721 if ((MethodDecl = Protocol->lookupMethod(Sel, isInstance)))
722 if (C != Cat || !MethodDecl->isImplicit())
723 return MethodDecl;
724 }
725
726
727 if (!followSuper)
728 return nullptr;
729
730 // 5. Get to the super class (if any).
731 ClassDecl = ClassDecl->getSuperClass();
732 }
733 return nullptr;
734}
735
736// Will search "local" class/category implementations for a method decl.
737// If failed, then we search in class's root for an instance method.
738// Returns 0 if no method is found.
739ObjCMethodDecl *ObjCInterfaceDecl::lookupPrivateMethod(
740 const Selector &Sel,
741 bool Instance) const {
742 // FIXME: Should make sure no callers ever do this.
743 if (!hasDefinition())
744 return nullptr;
745
746 if (data().ExternallyCompleted)
747 LoadExternalDefinition();
748
749 ObjCMethodDecl *Method = nullptr;
750 if (ObjCImplementationDecl *ImpDecl = getImplementation())
751 Method = Instance ? ImpDecl->getInstanceMethod(Sel)
752 : ImpDecl->getClassMethod(Sel);
753
754 // Look through local category implementations associated with the class.
755 if (!Method)
756 Method = getCategoryMethod(Sel, Instance);
757
758 // Before we give up, check if the selector is an instance method.
759 // But only in the root. This matches gcc's behavior and what the
760 // runtime expects.
761 if (!Instance && !Method && !getSuperClass()) {
762 Method = lookupInstanceMethod(Sel);
763 // Look through local category implementations associated
764 // with the root class.
765 if (!Method)
766 Method = lookupPrivateMethod(Sel, true);
767 }
768
769 if (!Method && getSuperClass())
770 return getSuperClass()->lookupPrivateMethod(Sel, Instance);
771 return Method;
772}
773
774//===----------------------------------------------------------------------===//
775// ObjCMethodDecl
776//===----------------------------------------------------------------------===//
777
778ObjCMethodDecl::ObjCMethodDecl(SourceLocation beginLoc, SourceLocation endLoc,
779 Selector SelInfo, QualType T,
780 TypeSourceInfo *ReturnTInfo,
781 DeclContext *contextDecl, bool isInstance,
782 bool isVariadic, bool isPropertyAccessor,
783 bool isImplicitlyDeclared, bool isDefined,
784 ImplementationControl impControl,
785 bool HasRelatedResultType)
786 : NamedDecl(ObjCMethod, contextDecl, beginLoc, SelInfo),
787 DeclContext(ObjCMethod), MethodDeclType(T), ReturnTInfo(ReturnTInfo),
788 DeclEndLoc(endLoc) {
789
790 // Initialized the bits stored in DeclContext.
791 ObjCMethodDeclBits.Family =
792 static_cast<ObjCMethodFamily>(InvalidObjCMethodFamily);
793 setInstanceMethod(isInstance);
794 setVariadic(isVariadic);
795 setPropertyAccessor(isPropertyAccessor);
796 setDefined(isDefined);
797 setIsRedeclaration(false);
798 setHasRedeclaration(false);
799 setDeclImplementation(impControl);
800 setObjCDeclQualifier(OBJC_TQ_None);
801 setRelatedResultType(HasRelatedResultType);
802 setSelLocsKind(SelLoc_StandardNoSpace);
803 setOverriding(false);
804 setHasSkippedBody(false);
805
806 setImplicit(isImplicitlyDeclared);
807}
808
809ObjCMethodDecl *ObjCMethodDecl::Create(
810 ASTContext &C, SourceLocation beginLoc, SourceLocation endLoc,
811 Selector SelInfo, QualType T, TypeSourceInfo *ReturnTInfo,
812 DeclContext *contextDecl, bool isInstance, bool isVariadic,
813 bool isPropertyAccessor, bool isImplicitlyDeclared, bool isDefined,
814 ImplementationControl impControl, bool HasRelatedResultType) {
815 return new (C, contextDecl) ObjCMethodDecl(
816 beginLoc, endLoc, SelInfo, T, ReturnTInfo, contextDecl, isInstance,
817 isVariadic, isPropertyAccessor, isImplicitlyDeclared, isDefined,
818 impControl, HasRelatedResultType);
819}
820
821ObjCMethodDecl *ObjCMethodDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
822 return new (C, ID) ObjCMethodDecl(SourceLocation(), SourceLocation(),
823 Selector(), QualType(), nullptr, nullptr);
824}
825
826bool ObjCMethodDecl::isThisDeclarationADesignatedInitializer() const {
827 return getMethodFamily() == OMF_init &&
828 hasAttr<ObjCDesignatedInitializerAttr>();
829}
830
831bool ObjCMethodDecl::definedInNSObject(const ASTContext &Ctx) const {
832 if (const auto *PD = dyn_cast<const ObjCProtocolDecl>(getDeclContext()))
833 return PD->getIdentifier() == Ctx.getNSObjectName();
834 if (const auto *ID = dyn_cast<const ObjCInterfaceDecl>(getDeclContext()))
835 return ID->getIdentifier() == Ctx.getNSObjectName();
836 return false;
837}
838
839bool ObjCMethodDecl::isDesignatedInitializerForTheInterface(
840 const ObjCMethodDecl **InitMethod) const {
841 if (getMethodFamily() != OMF_init)
842 return false;
843 const DeclContext *DC = getDeclContext();
844 if (isa<ObjCProtocolDecl>(DC))
845 return false;
846 if (const ObjCInterfaceDecl *ID = getClassInterface())
847 return ID->isDesignatedInitializer(getSelector(), InitMethod);
848 return false;
849}
850
851Stmt *ObjCMethodDecl::getBody() const {
852 return Body.get(getASTContext().getExternalSource());
853}
854
855void ObjCMethodDecl::setAsRedeclaration(const ObjCMethodDecl *PrevMethod) {
856 assert(PrevMethod)((PrevMethod) ? static_cast<void> (0) : __assert_fail (
"PrevMethod", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 856, __PRETTY_FUNCTION__))
;
857 getASTContext().setObjCMethodRedeclaration(PrevMethod, this);
858 setIsRedeclaration(true);
859 PrevMethod->setHasRedeclaration(true);
860}
861
862void ObjCMethodDecl::setParamsAndSelLocs(ASTContext &C,
863 ArrayRef<ParmVarDecl*> Params,
864 ArrayRef<SourceLocation> SelLocs) {
865 ParamsAndSelLocs = nullptr;
866 NumParams = Params.size();
867 if (Params.empty() && SelLocs.empty())
868 return;
869
870 static_assert(alignof(ParmVarDecl *) >= alignof(SourceLocation),
871 "Alignment not sufficient for SourceLocation");
872
873 unsigned Size = sizeof(ParmVarDecl *) * NumParams +
874 sizeof(SourceLocation) * SelLocs.size();
875 ParamsAndSelLocs = C.Allocate(Size);
876 std::copy(Params.begin(), Params.end(), getParams());
877 std::copy(SelLocs.begin(), SelLocs.end(), getStoredSelLocs());
878}
879
880void ObjCMethodDecl::getSelectorLocs(
881 SmallVectorImpl<SourceLocation> &SelLocs) const {
882 for (unsigned i = 0, e = getNumSelectorLocs(); i != e; ++i)
883 SelLocs.push_back(getSelectorLoc(i));
884}
885
886void ObjCMethodDecl::setMethodParams(ASTContext &C,
887 ArrayRef<ParmVarDecl*> Params,
888 ArrayRef<SourceLocation> SelLocs) {
889 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\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 890, __PRETTY_FUNCTION__))
890 "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\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 890, __PRETTY_FUNCTION__))
;
891 if (isImplicit())
892 return setParamsAndSelLocs(C, Params, llvm::None);
893
894 setSelLocsKind(hasStandardSelectorLocs(getSelector(), SelLocs, Params,
895 DeclEndLoc));
896 if (getSelLocsKind() != SelLoc_NonStandard)
897 return setParamsAndSelLocs(C, Params, llvm::None);
898
899 setParamsAndSelLocs(C, Params, SelLocs);
900}
901
902/// A definition will return its interface declaration.
903/// An interface declaration will return its definition.
904/// Otherwise it will return itself.
905ObjCMethodDecl *ObjCMethodDecl::getNextRedeclarationImpl() {
906 ASTContext &Ctx = getASTContext();
907 ObjCMethodDecl *Redecl = nullptr;
908 if (hasRedeclaration())
909 Redecl = const_cast<ObjCMethodDecl*>(Ctx.getObjCMethodRedeclaration(this));
910 if (Redecl)
911 return Redecl;
912
913 auto *CtxD = cast<Decl>(getDeclContext());
914
915 if (!CtxD->isInvalidDecl()) {
916 if (auto *IFD = dyn_cast<ObjCInterfaceDecl>(CtxD)) {
917 if (ObjCImplementationDecl *ImplD = Ctx.getObjCImplementation(IFD))
918 if (!ImplD->isInvalidDecl())
919 Redecl = ImplD->getMethod(getSelector(), isInstanceMethod());
920
921 } else if (auto *CD = dyn_cast<ObjCCategoryDecl>(CtxD)) {
922 if (ObjCCategoryImplDecl *ImplD = Ctx.getObjCImplementation(CD))
923 if (!ImplD->isInvalidDecl())
924 Redecl = ImplD->getMethod(getSelector(), isInstanceMethod());
925
926 } else if (auto *ImplD = dyn_cast<ObjCImplementationDecl>(CtxD)) {
927 if (ObjCInterfaceDecl *IFD = ImplD->getClassInterface())
928 if (!IFD->isInvalidDecl())
929 Redecl = IFD->getMethod(getSelector(), isInstanceMethod());
930
931 } else if (auto *CImplD = dyn_cast<ObjCCategoryImplDecl>(CtxD)) {
932 if (ObjCCategoryDecl *CatD = CImplD->getCategoryDecl())
933 if (!CatD->isInvalidDecl())
934 Redecl = CatD->getMethod(getSelector(), isInstanceMethod());
935 }
936 }
937
938 // Ensure that the discovered method redeclaration has a valid declaration
939 // context. Used to prevent infinite loops when iterating redeclarations in
940 // a partially invalid AST.
941 if (Redecl && cast<Decl>(Redecl->getDeclContext())->isInvalidDecl())
942 Redecl = nullptr;
943
944 if (!Redecl && isRedeclaration()) {
945 // This is the last redeclaration, go back to the first method.
946 return cast<ObjCContainerDecl>(CtxD)->getMethod(getSelector(),
947 isInstanceMethod());
948 }
949
950 return Redecl ? Redecl : this;
951}
952
953ObjCMethodDecl *ObjCMethodDecl::getCanonicalDecl() {
954 auto *CtxD = cast<Decl>(getDeclContext());
955
956 if (auto *ImplD = dyn_cast<ObjCImplementationDecl>(CtxD)) {
957 if (ObjCInterfaceDecl *IFD = ImplD->getClassInterface())
958 if (ObjCMethodDecl *MD = IFD->getMethod(getSelector(),
959 isInstanceMethod()))
960 return MD;
961 } else if (auto *CImplD = dyn_cast<ObjCCategoryImplDecl>(CtxD)) {
962 if (ObjCCategoryDecl *CatD = CImplD->getCategoryDecl())
963 if (ObjCMethodDecl *MD = CatD->getMethod(getSelector(),
964 isInstanceMethod()))
965 return MD;
966 }
967
968 if (isRedeclaration()) {
969 // It is possible that we have not done deserializing the ObjCMethod yet.
970 ObjCMethodDecl *MD =
971 cast<ObjCContainerDecl>(CtxD)->getMethod(getSelector(),
972 isInstanceMethod());
973 return MD ? MD : this;
974 }
975
976 return this;
977}
978
979SourceLocation ObjCMethodDecl::getEndLoc() const {
980 if (Stmt *Body = getBody())
981 return Body->getEndLoc();
982 return DeclEndLoc;
983}
984
985ObjCMethodFamily ObjCMethodDecl::getMethodFamily() const {
986 auto family = static_cast<ObjCMethodFamily>(ObjCMethodDeclBits.Family);
987 if (family != static_cast<unsigned>(InvalidObjCMethodFamily))
988 return family;
989
990 // Check for an explicit attribute.
991 if (const ObjCMethodFamilyAttr *attr = getAttr<ObjCMethodFamilyAttr>()) {
992 // The unfortunate necessity of mapping between enums here is due
993 // to the attributes framework.
994 switch (attr->getFamily()) {
995 case ObjCMethodFamilyAttr::OMF_None: family = OMF_None; break;
996 case ObjCMethodFamilyAttr::OMF_alloc: family = OMF_alloc; break;
997 case ObjCMethodFamilyAttr::OMF_copy: family = OMF_copy; break;
998 case ObjCMethodFamilyAttr::OMF_init: family = OMF_init; break;
999 case ObjCMethodFamilyAttr::OMF_mutableCopy: family = OMF_mutableCopy; break;
1000 case ObjCMethodFamilyAttr::OMF_new: family = OMF_new; break;
1001 }
1002 ObjCMethodDeclBits.Family = family;
1003 return family;
1004 }
1005
1006 family = getSelector().getMethodFamily();
1007 switch (family) {
1008 case OMF_None: break;
1009
1010 // init only has a conventional meaning for an instance method, and
1011 // it has to return an object.
1012 case OMF_init:
1013 if (!isInstanceMethod() || !getReturnType()->isObjCObjectPointerType())
1014 family = OMF_None;
1015 break;
1016
1017 // alloc/copy/new have a conventional meaning for both class and
1018 // instance methods, but they require an object return.
1019 case OMF_alloc:
1020 case OMF_copy:
1021 case OMF_mutableCopy:
1022 case OMF_new:
1023 if (!getReturnType()->isObjCObjectPointerType())
1024 family = OMF_None;
1025 break;
1026
1027 // These selectors have a conventional meaning only for instance methods.
1028 case OMF_dealloc:
1029 case OMF_finalize:
1030 case OMF_retain:
1031 case OMF_release:
1032 case OMF_autorelease:
1033 case OMF_retainCount:
1034 case OMF_self:
1035 if (!isInstanceMethod())
1036 family = OMF_None;
1037 break;
1038
1039 case OMF_initialize:
1040 if (isInstanceMethod() || !getReturnType()->isVoidType())
1041 family = OMF_None;
1042 break;
1043
1044 case OMF_performSelector:
1045 if (!isInstanceMethod() || !getReturnType()->isObjCIdType())
1046 family = OMF_None;
1047 else {
1048 unsigned noParams = param_size();
1049 if (noParams < 1 || noParams > 3)
1050 family = OMF_None;
1051 else {
1052 ObjCMethodDecl::param_type_iterator it = param_type_begin();
1053 QualType ArgT = (*it);
1054 if (!ArgT->isObjCSelType()) {
1055 family = OMF_None;
1056 break;
1057 }
1058 while (--noParams) {
1059 it++;
1060 ArgT = (*it);
1061 if (!ArgT->isObjCIdType()) {
1062 family = OMF_None;
1063 break;
1064 }
1065 }
1066 }
1067 }
1068 break;
1069
1070 }
1071
1072 // Cache the result.
1073 ObjCMethodDeclBits.Family = family;
1074 return family;
1075}
1076
1077QualType ObjCMethodDecl::getSelfType(ASTContext &Context,
1078 const ObjCInterfaceDecl *OID,
1079 bool &selfIsPseudoStrong,
1080 bool &selfIsConsumed) {
1081 QualType selfTy;
1082 selfIsPseudoStrong = false;
1083 selfIsConsumed = false;
1084 if (isInstanceMethod()) {
1085 // There may be no interface context due to error in declaration
1086 // of the interface (which has been reported). Recover gracefully.
1087 if (OID) {
1088 selfTy = Context.getObjCInterfaceType(OID);
1089 selfTy = Context.getObjCObjectPointerType(selfTy);
1090 } else {
1091 selfTy = Context.getObjCIdType();
1092 }
1093 } else // we have a factory method.
1094 selfTy = Context.getObjCClassType();
1095
1096 if (Context.getLangOpts().ObjCAutoRefCount) {
1097 if (isInstanceMethod()) {
1098 selfIsConsumed = hasAttr<NSConsumesSelfAttr>();
1099
1100 // 'self' is always __strong. It's actually pseudo-strong except
1101 // in init methods (or methods labeled ns_consumes_self), though.
1102 Qualifiers qs;
1103 qs.setObjCLifetime(Qualifiers::OCL_Strong);
1104 selfTy = Context.getQualifiedType(selfTy, qs);
1105
1106 // In addition, 'self' is const unless this is an init method.
1107 if (getMethodFamily() != OMF_init && !selfIsConsumed) {
1108 selfTy = selfTy.withConst();
1109 selfIsPseudoStrong = true;
1110 }
1111 }
1112 else {
1113 assert(isClassMethod())((isClassMethod()) ? static_cast<void> (0) : __assert_fail
("isClassMethod()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1113, __PRETTY_FUNCTION__))
;
1114 // 'self' is always const in class methods.
1115 selfTy = selfTy.withConst();
1116 selfIsPseudoStrong = true;
1117 }
1118 }
1119 return selfTy;
1120}
1121
1122void ObjCMethodDecl::createImplicitParams(ASTContext &Context,
1123 const ObjCInterfaceDecl *OID) {
1124 bool selfIsPseudoStrong, selfIsConsumed;
1125 QualType selfTy =
1126 getSelfType(Context, OID, selfIsPseudoStrong, selfIsConsumed);
1127 auto *Self = ImplicitParamDecl::Create(Context, this, SourceLocation(),
1128 &Context.Idents.get("self"), selfTy,
1129 ImplicitParamDecl::ObjCSelf);
1130 setSelfDecl(Self);
1131
1132 if (selfIsConsumed)
1133 Self->addAttr(NSConsumedAttr::CreateImplicit(Context));
1134
1135 if (selfIsPseudoStrong)
1136 Self->setARCPseudoStrong(true);
1137
1138 setCmdDecl(ImplicitParamDecl::Create(
1139 Context, this, SourceLocation(), &Context.Idents.get("_cmd"),
1140 Context.getObjCSelType(), ImplicitParamDecl::ObjCCmd));
1141}
1142
1143ObjCInterfaceDecl *ObjCMethodDecl::getClassInterface() {
1144 if (auto *ID = dyn_cast<ObjCInterfaceDecl>(getDeclContext()))
1145 return ID;
1146 if (auto *CD = dyn_cast<ObjCCategoryDecl>(getDeclContext()))
1147 return CD->getClassInterface();
1148 if (auto *IMD = dyn_cast<ObjCImplDecl>(getDeclContext()))
1149 return IMD->getClassInterface();
1150 if (isa<ObjCProtocolDecl>(getDeclContext()))
1151 return nullptr;
1152 llvm_unreachable("unknown method context")::llvm::llvm_unreachable_internal("unknown method context", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1152)
;
1153}
1154
1155SourceRange ObjCMethodDecl::getReturnTypeSourceRange() const {
1156 const auto *TSI = getReturnTypeSourceInfo();
1157 if (TSI)
1158 return TSI->getTypeLoc().getSourceRange();
1159 return SourceRange();
1160}
1161
1162QualType ObjCMethodDecl::getSendResultType() const {
1163 ASTContext &Ctx = getASTContext();
1164 return getReturnType().getNonLValueExprType(Ctx)
1165 .substObjCTypeArgs(Ctx, {}, ObjCSubstitutionContext::Result);
1166}
1167
1168QualType ObjCMethodDecl::getSendResultType(QualType receiverType) const {
1169 // FIXME: Handle related result types here.
1170
1171 return getReturnType().getNonLValueExprType(getASTContext())
1172 .substObjCMemberType(receiverType, getDeclContext(),
1173 ObjCSubstitutionContext::Result);
1174}
1175
1176static void CollectOverriddenMethodsRecurse(const ObjCContainerDecl *Container,
1177 const ObjCMethodDecl *Method,
1178 SmallVectorImpl<const ObjCMethodDecl *> &Methods,
1179 bool MovedToSuper) {
1180 if (!Container)
1181 return;
1182
1183 // In categories look for overridden methods from protocols. A method from
1184 // category is not "overridden" since it is considered as the "same" method
1185 // (same USR) as the one from the interface.
1186 if (const auto *Category = dyn_cast<ObjCCategoryDecl>(Container)) {
1187 // Check whether we have a matching method at this category but only if we
1188 // are at the super class level.
1189 if (MovedToSuper)
1190 if (ObjCMethodDecl *
1191 Overridden = Container->getMethod(Method->getSelector(),
1192 Method->isInstanceMethod(),
1193 /*AllowHidden=*/true))
1194 if (Method != Overridden) {
1195 // We found an override at this category; there is no need to look
1196 // into its protocols.
1197 Methods.push_back(Overridden);
1198 return;
1199 }
1200
1201 for (const auto *P : Category->protocols())
1202 CollectOverriddenMethodsRecurse(P, Method, Methods, MovedToSuper);
1203 return;
1204 }
1205
1206 // Check whether we have a matching method at this level.
1207 if (const ObjCMethodDecl *
1208 Overridden = Container->getMethod(Method->getSelector(),
1209 Method->isInstanceMethod(),
1210 /*AllowHidden=*/true))
1211 if (Method != Overridden) {
1212 // We found an override at this level; there is no need to look
1213 // into other protocols or categories.
1214 Methods.push_back(Overridden);
1215 return;
1216 }
1217
1218 if (const auto *Protocol = dyn_cast<ObjCProtocolDecl>(Container)){
1219 for (const auto *P : Protocol->protocols())
1220 CollectOverriddenMethodsRecurse(P, Method, Methods, MovedToSuper);
1221 }
1222
1223 if (const auto *Interface = dyn_cast<ObjCInterfaceDecl>(Container)) {
1224 for (const auto *P : Interface->protocols())
1225 CollectOverriddenMethodsRecurse(P, Method, Methods, MovedToSuper);
1226
1227 for (const auto *Cat : Interface->known_categories())
1228 CollectOverriddenMethodsRecurse(Cat, Method, Methods, MovedToSuper);
1229
1230 if (const ObjCInterfaceDecl *Super = Interface->getSuperClass())
1231 return CollectOverriddenMethodsRecurse(Super, Method, Methods,
1232 /*MovedToSuper=*/true);
1233 }
1234}
1235
1236static inline void CollectOverriddenMethods(const ObjCContainerDecl *Container,
1237 const ObjCMethodDecl *Method,
1238 SmallVectorImpl<const ObjCMethodDecl *> &Methods) {
1239 CollectOverriddenMethodsRecurse(Container, Method, Methods,
1240 /*MovedToSuper=*/false);
1241}
1242
1243static void collectOverriddenMethodsSlow(const ObjCMethodDecl *Method,
1244 SmallVectorImpl<const ObjCMethodDecl *> &overridden) {
1245 assert(Method->isOverriding())((Method->isOverriding()) ? static_cast<void> (0) : __assert_fail
("Method->isOverriding()", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1245, __PRETTY_FUNCTION__))
;
1246
1247 if (const auto *ProtD =
1248 dyn_cast<ObjCProtocolDecl>(Method->getDeclContext())) {
1249 CollectOverriddenMethods(ProtD, Method, overridden);
1250
1251 } else if (const auto *IMD =
1252 dyn_cast<ObjCImplDecl>(Method->getDeclContext())) {
1253 const ObjCInterfaceDecl *ID = IMD->getClassInterface();
1254 if (!ID)
1255 return;
1256 // Start searching for overridden methods using the method from the
1257 // interface as starting point.
1258 if (const ObjCMethodDecl *IFaceMeth = ID->getMethod(Method->getSelector(),
1259 Method->isInstanceMethod(),
1260 /*AllowHidden=*/true))
1261 Method = IFaceMeth;
1262 CollectOverriddenMethods(ID, Method, overridden);
1263
1264 } else if (const auto *CatD =
1265 dyn_cast<ObjCCategoryDecl>(Method->getDeclContext())) {
1266 const ObjCInterfaceDecl *ID = CatD->getClassInterface();
1267 if (!ID)
1268 return;
1269 // Start searching for overridden methods using the method from the
1270 // interface as starting point.
1271 if (const ObjCMethodDecl *IFaceMeth = ID->getMethod(Method->getSelector(),
1272 Method->isInstanceMethod(),
1273 /*AllowHidden=*/true))
1274 Method = IFaceMeth;
1275 CollectOverriddenMethods(ID, Method, overridden);
1276
1277 } else {
1278 CollectOverriddenMethods(
1279 dyn_cast_or_null<ObjCContainerDecl>(Method->getDeclContext()),
1280 Method, overridden);
1281 }
1282}
1283
1284void ObjCMethodDecl::getOverriddenMethods(
1285 SmallVectorImpl<const ObjCMethodDecl *> &Overridden) const {
1286 const ObjCMethodDecl *Method = this;
1287
1288 if (Method->isRedeclaration()) {
1289 Method = cast<ObjCContainerDecl>(Method->getDeclContext())->
1290 getMethod(Method->getSelector(), Method->isInstanceMethod());
1291 }
1292
1293 if (Method->isOverriding()) {
1294 collectOverriddenMethodsSlow(Method, Overridden);
1295 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\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1296, __PRETTY_FUNCTION__))
1296 "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\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1296, __PRETTY_FUNCTION__))
;
1297 }
1298}
1299
1300const ObjCPropertyDecl *
1301ObjCMethodDecl::findPropertyDecl(bool CheckOverrides) const {
1302 Selector Sel = getSelector();
1303 unsigned NumArgs = Sel.getNumArgs();
1304 if (NumArgs > 1)
1305 return nullptr;
1306
1307 if (isPropertyAccessor()) {
1308 const auto *Container = cast<ObjCContainerDecl>(getParent());
1309 bool IsGetter = (NumArgs == 0);
1310 bool IsInstance = isInstanceMethod();
1311
1312 /// Local function that attempts to find a matching property within the
1313 /// given Objective-C container.
1314 auto findMatchingProperty =
1315 [&](const ObjCContainerDecl *Container) -> const ObjCPropertyDecl * {
1316 if (IsInstance) {
1317 for (const auto *I : Container->instance_properties()) {
1318 Selector NextSel = IsGetter ? I->getGetterName()
1319 : I->getSetterName();
1320 if (NextSel == Sel)
1321 return I;
1322 }
1323 } else {
1324 for (const auto *I : Container->class_properties()) {
1325 Selector NextSel = IsGetter ? I->getGetterName()
1326 : I->getSetterName();
1327 if (NextSel == Sel)
1328 return I;
1329 }
1330 }
1331
1332 return nullptr;
1333 };
1334
1335 // Look in the container we were given.
1336 if (const auto *Found = findMatchingProperty(Container))
1337 return Found;
1338
1339 // If we're in a category or extension, look in the main class.
1340 const ObjCInterfaceDecl *ClassDecl = nullptr;
1341 if (const auto *Category = dyn_cast<ObjCCategoryDecl>(Container)) {
1342 ClassDecl = Category->getClassInterface();
1343 if (const auto *Found = findMatchingProperty(ClassDecl))
1344 return Found;
1345 } else {
1346 // Determine whether the container is a class.
1347 ClassDecl = dyn_cast<ObjCInterfaceDecl>(Container);
1348 }
1349
1350 // If we have a class, check its visible extensions.
1351 if (ClassDecl) {
1352 for (const auto *Ext : ClassDecl->visible_extensions()) {
1353 if (Ext == Container)
1354 continue;
1355
1356 if (const auto *Found = findMatchingProperty(Ext))
1357 return Found;
1358 }
1359 }
1360
1361 llvm_unreachable("Marked as a property accessor but no property found!")::llvm::llvm_unreachable_internal("Marked as a property accessor but no property found!"
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1361)
;
1362 }
1363
1364 if (!CheckOverrides)
1365 return nullptr;
1366
1367 using OverridesTy = SmallVector<const ObjCMethodDecl *, 8>;
1368
1369 OverridesTy Overrides;
1370 getOverriddenMethods(Overrides);
1371 for (const auto *Override : Overrides)
1372 if (const ObjCPropertyDecl *Prop = Override->findPropertyDecl(false))
1373 return Prop;
1374
1375 return nullptr;
1376}
1377
1378//===----------------------------------------------------------------------===//
1379// ObjCTypeParamDecl
1380//===----------------------------------------------------------------------===//
1381
1382void ObjCTypeParamDecl::anchor() {}
1383
1384ObjCTypeParamDecl *ObjCTypeParamDecl::Create(ASTContext &ctx, DeclContext *dc,
1385 ObjCTypeParamVariance variance,
1386 SourceLocation varianceLoc,
1387 unsigned index,
1388 SourceLocation nameLoc,
1389 IdentifierInfo *name,
1390 SourceLocation colonLoc,
1391 TypeSourceInfo *boundInfo) {
1392 auto *TPDecl =
1393 new (ctx, dc) ObjCTypeParamDecl(ctx, dc, variance, varianceLoc, index,
1394 nameLoc, name, colonLoc, boundInfo);
1395 QualType TPType = ctx.getObjCTypeParamType(TPDecl, {});
1396 TPDecl->setTypeForDecl(TPType.getTypePtr());
1397 return TPDecl;
1398}
1399
1400ObjCTypeParamDecl *ObjCTypeParamDecl::CreateDeserialized(ASTContext &ctx,
1401 unsigned ID) {
1402 return new (ctx, ID) ObjCTypeParamDecl(ctx, nullptr,
1403 ObjCTypeParamVariance::Invariant,
1404 SourceLocation(), 0, SourceLocation(),
1405 nullptr, SourceLocation(), nullptr);
1406}
1407
1408SourceRange ObjCTypeParamDecl::getSourceRange() const {
1409 SourceLocation startLoc = VarianceLoc;
1410 if (startLoc.isInvalid())
1411 startLoc = getLocation();
1412
1413 if (hasExplicitBound()) {
1414 return SourceRange(startLoc,
1415 getTypeSourceInfo()->getTypeLoc().getEndLoc());
1416 }
1417
1418 return SourceRange(startLoc);
1419}
1420
1421//===----------------------------------------------------------------------===//
1422// ObjCTypeParamList
1423//===----------------------------------------------------------------------===//
1424ObjCTypeParamList::ObjCTypeParamList(SourceLocation lAngleLoc,
1425 ArrayRef<ObjCTypeParamDecl *> typeParams,
1426 SourceLocation rAngleLoc)
1427 : NumParams(typeParams.size()) {
1428 Brackets.Begin = lAngleLoc.getRawEncoding();
1429 Brackets.End = rAngleLoc.getRawEncoding();
1430 std::copy(typeParams.begin(), typeParams.end(), begin());
1431}
1432
1433ObjCTypeParamList *ObjCTypeParamList::create(
1434 ASTContext &ctx,
1435 SourceLocation lAngleLoc,
1436 ArrayRef<ObjCTypeParamDecl *> typeParams,
1437 SourceLocation rAngleLoc) {
1438 void *mem =
1439 ctx.Allocate(totalSizeToAlloc<ObjCTypeParamDecl *>(typeParams.size()),
1440 alignof(ObjCTypeParamList));
1441 return new (mem) ObjCTypeParamList(lAngleLoc, typeParams, rAngleLoc);
1442}
1443
1444void ObjCTypeParamList::gatherDefaultTypeArgs(
1445 SmallVectorImpl<QualType> &typeArgs) const {
1446 typeArgs.reserve(size());
1447 for (auto typeParam : *this)
1448 typeArgs.push_back(typeParam->getUnderlyingType());
1449}
1450
1451//===----------------------------------------------------------------------===//
1452// ObjCInterfaceDecl
1453//===----------------------------------------------------------------------===//
1454
1455ObjCInterfaceDecl *ObjCInterfaceDecl::Create(const ASTContext &C,
1456 DeclContext *DC,
1457 SourceLocation atLoc,
1458 IdentifierInfo *Id,
1459 ObjCTypeParamList *typeParamList,
1460 ObjCInterfaceDecl *PrevDecl,
1461 SourceLocation ClassLoc,
1462 bool isInternal){
1463 auto *Result = new (C, DC)
1464 ObjCInterfaceDecl(C, DC, atLoc, Id, typeParamList, ClassLoc, PrevDecl,
1465 isInternal);
1466 Result->Data.setInt(!C.getLangOpts().Modules);
1467 C.getObjCInterfaceType(Result, PrevDecl);
1468 return Result;
1469}
1470
1471ObjCInterfaceDecl *ObjCInterfaceDecl::CreateDeserialized(const ASTContext &C,
1472 unsigned ID) {
1473 auto *Result = new (C, ID)
1474 ObjCInterfaceDecl(C, nullptr, SourceLocation(), nullptr, nullptr,
1475 SourceLocation(), nullptr, false);
1476 Result->Data.setInt(!C.getLangOpts().Modules);
1477 return Result;
1478}
1479
1480ObjCInterfaceDecl::ObjCInterfaceDecl(const ASTContext &C, DeclContext *DC,
1481 SourceLocation AtLoc, IdentifierInfo *Id,
1482 ObjCTypeParamList *typeParamList,
1483 SourceLocation CLoc,
1484 ObjCInterfaceDecl *PrevDecl,
1485 bool IsInternal)
1486 : ObjCContainerDecl(ObjCInterface, DC, Id, CLoc, AtLoc),
1487 redeclarable_base(C) {
1488 setPreviousDecl(PrevDecl);
1489
1490 // Copy the 'data' pointer over.
1491 if (PrevDecl)
1492 Data = PrevDecl->Data;
1493
1494 setImplicit(IsInternal);
1495
1496 setTypeParamList(typeParamList);
1497}
1498
1499void ObjCInterfaceDecl::LoadExternalDefinition() const {
1500 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\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1500, __PRETTY_FUNCTION__))
;
1501 data().ExternallyCompleted = false;
1502 getASTContext().getExternalSource()->CompleteType(
1503 const_cast<ObjCInterfaceDecl *>(this));
1504}
1505
1506void ObjCInterfaceDecl::setExternallyCompleted() {
1507 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\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1508, __PRETTY_FUNCTION__))
1508 "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\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1508, __PRETTY_FUNCTION__))
;
1509 assert(hasDefinition() &&((hasDefinition() && "Forward declarations can't be externally completed"
) ? static_cast<void> (0) : __assert_fail ("hasDefinition() && \"Forward declarations can't be externally completed\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1510, __PRETTY_FUNCTION__))
1510 "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\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1510, __PRETTY_FUNCTION__))
;
1511 data().ExternallyCompleted = true;
1512}
1513
1514void ObjCInterfaceDecl::setHasDesignatedInitializers() {
1515 // Check for a complete definition and recover if not so.
1516 if (!isThisDeclarationADefinition())
1517 return;
1518 data().HasDesignatedInitializers = true;
1519}
1520
1521bool ObjCInterfaceDecl::hasDesignatedInitializers() const {
1522 // Check for a complete definition and recover if not so.
1523 if (!isThisDeclarationADefinition())
1524 return false;
1525 if (data().ExternallyCompleted)
1526 LoadExternalDefinition();
1527
1528 return data().HasDesignatedInitializers;
1529}
1530
1531StringRef
1532ObjCInterfaceDecl::getObjCRuntimeNameAsString() const {
1533 if (const auto *ObjCRTName = getAttr<ObjCRuntimeNameAttr>())
1534 return ObjCRTName->getMetadataName();
1535
1536 return getName();
1537}
1538
1539StringRef
1540ObjCImplementationDecl::getObjCRuntimeNameAsString() const {
1541 if (ObjCInterfaceDecl *ID =
1542 const_cast<ObjCImplementationDecl*>(this)->getClassInterface())
1543 return ID->getObjCRuntimeNameAsString();
1544
1545 return getName();
1546}
1547
1548ObjCImplementationDecl *ObjCInterfaceDecl::getImplementation() const {
1549 if (const ObjCInterfaceDecl *Def = getDefinition()) {
1550 if (data().ExternallyCompleted)
1551 LoadExternalDefinition();
1552
1553 return getASTContext().getObjCImplementation(
1554 const_cast<ObjCInterfaceDecl*>(Def));
1555 }
1556
1557 // FIXME: Should make sure no callers ever do this.
1558 return nullptr;
1559}
1560
1561void ObjCInterfaceDecl::setImplementation(ObjCImplementationDecl *ImplD) {
1562 getASTContext().setObjCImplementation(getDefinition(), ImplD);
1563}
1564
1565namespace {
1566
1567struct SynthesizeIvarChunk {
1568 uint64_t Size;
1569 ObjCIvarDecl *Ivar;
1570
1571 SynthesizeIvarChunk(uint64_t size, ObjCIvarDecl *ivar)
1572 : Size(size), Ivar(ivar) {}
1573};
1574
1575bool operator<(const SynthesizeIvarChunk & LHS,
1576 const SynthesizeIvarChunk &RHS) {
1577 return LHS.Size < RHS.Size;
1578}
1579
1580} // namespace
1581
1582/// all_declared_ivar_begin - return first ivar declared in this class,
1583/// its extensions and its implementation. Lazily build the list on first
1584/// access.
1585///
1586/// Caveat: The list returned by this method reflects the current
1587/// state of the parser. The cache will be updated for every ivar
1588/// added by an extension or the implementation when they are
1589/// encountered.
1590/// See also ObjCIvarDecl::Create().
1591ObjCIvarDecl *ObjCInterfaceDecl::all_declared_ivar_begin() {
1592 // FIXME: Should make sure no callers ever do this.
1593 if (!hasDefinition())
1
Assuming the condition is false
2
Taking false branch
1594 return nullptr;
1595
1596 ObjCIvarDecl *curIvar = nullptr;
3
'curIvar' initialized to a null pointer value
1597 if (!data().IvarList) {
4
Assuming the condition is false
5
Taking false branch
1598 if (!ivar_empty()) {
1599 ObjCInterfaceDecl::ivar_iterator I = ivar_begin(), E = ivar_end();
1600 data().IvarList = *I; ++I;
1601 for (curIvar = data().IvarList; I != E; curIvar = *I, ++I)
1602 curIvar->setNextIvar(*I);
1603 }
1604
1605 for (const auto *Ext : known_extensions()) {
1606 if (!Ext->ivar_empty()) {
1607 ObjCCategoryDecl::ivar_iterator
1608 I = Ext->ivar_begin(),
1609 E = Ext->ivar_end();
1610 if (!data().IvarList) {
1611 data().IvarList = *I; ++I;
1612 curIvar = data().IvarList;
1613 }
1614 for ( ;I != E; curIvar = *I, ++I)
1615 curIvar->setNextIvar(*I);
1616 }
1617 }
1618 data().IvarListMissingImplementation = true;
1619 }
1620
1621 // cached and complete!
1622 if (!data().IvarListMissingImplementation)
6
Assuming the condition is false
7
Taking false branch
1623 return data().IvarList;
1624
1625 if (ObjCImplementationDecl *ImplDecl = getImplementation()) {
8
Assuming 'ImplDecl' is non-null
9
Taking true branch
1626 data().IvarListMissingImplementation = false;
1627 if (!ImplDecl->ivar_empty()) {
10
Taking true branch
1628 SmallVector<SynthesizeIvarChunk, 16> layout;
1629 for (auto *IV : ImplDecl->ivars()) {
1630 if (IV->getSynthesize() && !IV->isInvalidDecl()) {
1631 layout.push_back(SynthesizeIvarChunk(
1632 IV->getASTContext().getTypeSize(IV->getType()), IV));
1633 continue;
1634 }
1635 if (!data().IvarList)
1636 data().IvarList = IV;
1637 else
1638 curIvar->setNextIvar(IV);
1639 curIvar = IV;
1640 }
1641
1642 if (!layout.empty()) {
11
Taking true branch
1643 // Order synthesized ivars by their size.
1644 llvm::stable_sort(layout);
1645 unsigned Ix = 0, EIx = layout.size();
1646 if (!data().IvarList) {
12
Assuming the condition is false
13
Taking false branch
1647 data().IvarList = layout[0].Ivar; Ix++;
1648 curIvar = data().IvarList;
1649 }
1650 for ( ; Ix != EIx; curIvar = layout[Ix].Ivar, Ix++)
14
Assuming 'Ix' is not equal to 'EIx'
15
Loop condition is true. Entering loop body
1651 curIvar->setNextIvar(layout[Ix].Ivar);
16
Called C++ object pointer is null
1652 }
1653 }
1654 }
1655 return data().IvarList;
1656}
1657
1658/// FindCategoryDeclaration - Finds category declaration in the list of
1659/// categories for this class and returns it. Name of the category is passed
1660/// in 'CategoryId'. If category not found, return 0;
1661///
1662ObjCCategoryDecl *
1663ObjCInterfaceDecl::FindCategoryDeclaration(IdentifierInfo *CategoryId) const {
1664 // FIXME: Should make sure no callers ever do this.
1665 if (!hasDefinition())
1666 return nullptr;
1667
1668 if (data().ExternallyCompleted)
1669 LoadExternalDefinition();
1670
1671 for (auto *Cat : visible_categories())
1672 if (Cat->getIdentifier() == CategoryId)
1673 return Cat;
1674
1675 return nullptr;
1676}
1677
1678ObjCMethodDecl *
1679ObjCInterfaceDecl::getCategoryInstanceMethod(Selector Sel) const {
1680 for (const auto *Cat : visible_categories()) {
1681 if (ObjCCategoryImplDecl *Impl = Cat->getImplementation())
1682 if (ObjCMethodDecl *MD = Impl->getInstanceMethod(Sel))
1683 return MD;
1684 }
1685
1686 return nullptr;
1687}
1688
1689ObjCMethodDecl *ObjCInterfaceDecl::getCategoryClassMethod(Selector Sel) const {
1690 for (const auto *Cat : visible_categories()) {
1691 if (ObjCCategoryImplDecl *Impl = Cat->getImplementation())
1692 if (ObjCMethodDecl *MD = Impl->getClassMethod(Sel))
1693 return MD;
1694 }
1695
1696 return nullptr;
1697}
1698
1699/// ClassImplementsProtocol - Checks that 'lProto' protocol
1700/// has been implemented in IDecl class, its super class or categories (if
1701/// lookupCategory is true).
1702bool ObjCInterfaceDecl::ClassImplementsProtocol(ObjCProtocolDecl *lProto,
1703 bool lookupCategory,
1704 bool RHSIsQualifiedID) {
1705 if (!hasDefinition())
1706 return false;
1707
1708 ObjCInterfaceDecl *IDecl = this;
1709 // 1st, look up the class.
1710 for (auto *PI : IDecl->protocols()){
1711 if (getASTContext().ProtocolCompatibleWithProtocol(lProto, PI))
1712 return true;
1713 // This is dubious and is added to be compatible with gcc. In gcc, it is
1714 // also allowed assigning a protocol-qualified 'id' type to a LHS object
1715 // when protocol in qualified LHS is in list of protocols in the rhs 'id'
1716 // object. This IMO, should be a bug.
1717 // FIXME: Treat this as an extension, and flag this as an error when GCC
1718 // extensions are not enabled.
1719 if (RHSIsQualifiedID &&
1720 getASTContext().ProtocolCompatibleWithProtocol(PI, lProto))
1721 return true;
1722 }
1723
1724 // 2nd, look up the category.
1725 if (lookupCategory)
1726 for (const auto *Cat : visible_categories()) {
1727 for (auto *PI : Cat->protocols())
1728 if (getASTContext().ProtocolCompatibleWithProtocol(lProto, PI))
1729 return true;
1730 }
1731
1732 // 3rd, look up the super class(s)
1733 if (IDecl->getSuperClass())
1734 return
1735 IDecl->getSuperClass()->ClassImplementsProtocol(lProto, lookupCategory,
1736 RHSIsQualifiedID);
1737
1738 return false;
1739}
1740
1741//===----------------------------------------------------------------------===//
1742// ObjCIvarDecl
1743//===----------------------------------------------------------------------===//
1744
1745void ObjCIvarDecl::anchor() {}
1746
1747ObjCIvarDecl *ObjCIvarDecl::Create(ASTContext &C, ObjCContainerDecl *DC,
1748 SourceLocation StartLoc,
1749 SourceLocation IdLoc, IdentifierInfo *Id,
1750 QualType T, TypeSourceInfo *TInfo,
1751 AccessControl ac, Expr *BW,
1752 bool synthesized) {
1753 if (DC) {
1754 // Ivar's can only appear in interfaces, implementations (via synthesized
1755 // properties), and class extensions (via direct declaration, or synthesized
1756 // properties).
1757 //
1758 // FIXME: This should really be asserting this:
1759 // (isa<ObjCCategoryDecl>(DC) &&
1760 // cast<ObjCCategoryDecl>(DC)->IsClassExtension()))
1761 // but unfortunately we sometimes place ivars into non-class extension
1762 // categories on error. This breaks an AST invariant, and should not be
1763 // fixed.
1764 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!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1766, __PRETTY_FUNCTION__))
1765 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!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1766, __PRETTY_FUNCTION__))
1766 "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!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1766, __PRETTY_FUNCTION__))
;
1767 // Once a new ivar is created in any of class/class-extension/implementation
1768 // decl contexts, the previously built IvarList must be rebuilt.
1769 auto *ID = dyn_cast<ObjCInterfaceDecl>(DC);
1770 if (!ID) {
1771 if (auto *IM = dyn_cast<ObjCImplementationDecl>(DC))
1772 ID = IM->getClassInterface();
1773 else
1774 ID = cast<ObjCCategoryDecl>(DC)->getClassInterface();
1775 }
1776 ID->setIvarList(nullptr);
1777 }
1778
1779 return new (C, DC) ObjCIvarDecl(DC, StartLoc, IdLoc, Id, T, TInfo, ac, BW,
1780 synthesized);
1781}
1782
1783ObjCIvarDecl *ObjCIvarDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
1784 return new (C, ID) ObjCIvarDecl(nullptr, SourceLocation(), SourceLocation(),
1785 nullptr, QualType(), nullptr,
1786 ObjCIvarDecl::None, nullptr, false);
1787}
1788
1789const ObjCInterfaceDecl *ObjCIvarDecl::getContainingInterface() const {
1790 const auto *DC = cast<ObjCContainerDecl>(getDeclContext());
1791
1792 switch (DC->getKind()) {
1793 default:
1794 case ObjCCategoryImpl:
1795 case ObjCProtocol:
1796 llvm_unreachable("invalid ivar container!")::llvm::llvm_unreachable_internal("invalid ivar container!", "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1796)
;
1797
1798 // Ivars can only appear in class extension categories.
1799 case ObjCCategory: {
1800 const auto *CD = cast<ObjCCategoryDecl>(DC);
1801 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!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1801, __PRETTY_FUNCTION__))
;
1802 return CD->getClassInterface();
1803 }
1804
1805 case ObjCImplementation:
1806 return cast<ObjCImplementationDecl>(DC)->getClassInterface();
1807
1808 case ObjCInterface:
1809 return cast<ObjCInterfaceDecl>(DC);
1810 }
1811}
1812
1813QualType ObjCIvarDecl::getUsageType(QualType objectType) const {
1814 return getType().substObjCMemberType(objectType, getDeclContext(),
1815 ObjCSubstitutionContext::Property);
1816}
1817
1818//===----------------------------------------------------------------------===//
1819// ObjCAtDefsFieldDecl
1820//===----------------------------------------------------------------------===//
1821
1822void ObjCAtDefsFieldDecl::anchor() {}
1823
1824ObjCAtDefsFieldDecl
1825*ObjCAtDefsFieldDecl::Create(ASTContext &C, DeclContext *DC,
1826 SourceLocation StartLoc, SourceLocation IdLoc,
1827 IdentifierInfo *Id, QualType T, Expr *BW) {
1828 return new (C, DC) ObjCAtDefsFieldDecl(DC, StartLoc, IdLoc, Id, T, BW);
1829}
1830
1831ObjCAtDefsFieldDecl *ObjCAtDefsFieldDecl::CreateDeserialized(ASTContext &C,
1832 unsigned ID) {
1833 return new (C, ID) ObjCAtDefsFieldDecl(nullptr, SourceLocation(),
1834 SourceLocation(), nullptr, QualType(),
1835 nullptr);
1836}
1837
1838//===----------------------------------------------------------------------===//
1839// ObjCProtocolDecl
1840//===----------------------------------------------------------------------===//
1841
1842void ObjCProtocolDecl::anchor() {}
1843
1844ObjCProtocolDecl::ObjCProtocolDecl(ASTContext &C, DeclContext *DC,
1845 IdentifierInfo *Id, SourceLocation nameLoc,
1846 SourceLocation atStartLoc,
1847 ObjCProtocolDecl *PrevDecl)
1848 : ObjCContainerDecl(ObjCProtocol, DC, Id, nameLoc, atStartLoc),
1849 redeclarable_base(C) {
1850 setPreviousDecl(PrevDecl);
1851 if (PrevDecl)
1852 Data = PrevDecl->Data;
1853}
1854
1855ObjCProtocolDecl *ObjCProtocolDecl::Create(ASTContext &C, DeclContext *DC,
1856 IdentifierInfo *Id,
1857 SourceLocation nameLoc,
1858 SourceLocation atStartLoc,
1859 ObjCProtocolDecl *PrevDecl) {
1860 auto *Result =
1861 new (C, DC) ObjCProtocolDecl(C, DC, Id, nameLoc, atStartLoc, PrevDecl);
1862 Result->Data.setInt(!C.getLangOpts().Modules);
1863 return Result;
1864}
1865
1866ObjCProtocolDecl *ObjCProtocolDecl::CreateDeserialized(ASTContext &C,
1867 unsigned ID) {
1868 ObjCProtocolDecl *Result =
1869 new (C, ID) ObjCProtocolDecl(C, nullptr, nullptr, SourceLocation(),
1870 SourceLocation(), nullptr);
1871 Result->Data.setInt(!C.getLangOpts().Modules);
1872 return Result;
1873}
1874
1875ObjCProtocolDecl *ObjCProtocolDecl::lookupProtocolNamed(IdentifierInfo *Name) {
1876 ObjCProtocolDecl *PDecl = this;
1877
1878 if (Name == getIdentifier())
1879 return PDecl;
1880
1881 for (auto *I : protocols())
1882 if ((PDecl = I->lookupProtocolNamed(Name)))
1883 return PDecl;
1884
1885 return nullptr;
1886}
1887
1888// lookupMethod - Lookup a instance/class method in the protocol and protocols
1889// it inherited.
1890ObjCMethodDecl *ObjCProtocolDecl::lookupMethod(Selector Sel,
1891 bool isInstance) const {
1892 ObjCMethodDecl *MethodDecl = nullptr;
1893
1894 // If there is no definition or the definition is hidden, we don't find
1895 // anything.
1896 const ObjCProtocolDecl *Def = getDefinition();
1897 if (!Def || Def->isHidden())
1898 return nullptr;
1899
1900 if ((MethodDecl = getMethod(Sel, isInstance)))
1901 return MethodDecl;
1902
1903 for (const auto *I : protocols())
1904 if ((MethodDecl = I->lookupMethod(Sel, isInstance)))
1905 return MethodDecl;
1906 return nullptr;
1907}
1908
1909void ObjCProtocolDecl::allocateDefinitionData() {
1910 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!\""
, "/build/llvm-toolchain-snapshot-9~svn362543/tools/clang/lib/AST/DeclObjC.cpp"
, 1910, __PRETTY_FUNCTION__))
;
1911 Data.setPointer(new (getASTContext()) DefinitionData);
1912 Data.getPointer()->Definition = this;
1913}
1914
1915void ObjCProtocolDecl::startDefinition() {
1916 allocateDefinitionData();
1917
1918 // Update all of the declarations with a pointer to the definition.
1919 for (auto *RD : redecls())
1920 RD->Data = this->Data;
1921}
1922
1923void ObjCProtocolDecl::collectPropertiesToImplement(PropertyMap &PM,
1924 PropertyDeclOrder &PO) const {
1925 if (const ObjCProtocolDecl *PDecl = getDefinition()) {
1926 for (auto *Prop : PDecl->properties()) {
1927 // Insert into PM if not there already.
1928 PM.insert(std::make_pair(
1929 std::make_pair(Prop->getIdentifier(), Prop->isClassProperty()),
1930 Prop));
1931 PO.push_back(Prop);
1932 }
1933 // Scan through protocol's protocols.
1934 for (const auto *PI : PDecl->protocols())
1935 PI->collectPropertiesToImplement(PM, PO);
1936 }
1937}
1938
1939void ObjCProtocolDecl::collectInheritedProtocolProperties(
1940 const ObjCPropertyDecl *Property, ProtocolPropertySet &PS,
1941 PropertyDeclOrder &PO) const {
1942 if (const ObjCProtocolDecl *PDecl = getDefinition()) {
1943 if (!PS.insert(PDecl).second)
1944 return;
1945 for (auto *Prop : PDecl->properties()) {
1946 if (Prop == Property)
1947 continue;
1948 if (Prop->getIdentifier() == Property->getIdentifier()) {
1949 PO.push_back(Prop);
1950 return;
1951 }
1952 }
1953 // Scan through protocol's protocols which did not have a matching property.
1954 for (const auto *PI : PDecl->protocols())
1955 PI->collectInheritedProtocolProperties(Property, PS, PO);
1956 }
1957}
1958
1959StringRef
1960ObjCProtocolDecl::getObjCRuntimeNameAsString() const {
1961 if (const auto *ObjCRTName = getAttr<ObjCRuntimeNameAttr>())
1962 return ObjCRTName->getMetadataName();
1963
1964 return getName();
1965}
1966
1967//===----------------------------------------------------------------------===//
1968// ObjCCategoryDecl
1969//===----------------------------------------------------------------------===//
1970
1971void ObjCCategoryDecl::anchor() {}
1972
1973ObjCCategoryDecl::ObjCCategoryDecl(DeclContext *DC, SourceLocation AtLoc,
1974 SourceLocation ClassNameLoc,
1975 SourceLocation CategoryNameLoc,
1976 IdentifierInfo *Id, ObjCInterfaceDecl *IDecl,
1977 ObjCTypeParamList *typeParamList,
1978 SourceLocation IvarLBraceLoc,
1979 SourceLocation IvarRBraceLoc)
1980 : ObjCContainerDecl(ObjCCategory, DC, Id, ClassNameLoc, AtLoc),
1981 ClassInterface(IDecl), CategoryNameLoc(CategoryNameLoc),
1982 IvarLBraceLoc(IvarLBraceLoc), IvarRBraceLoc(IvarRBraceLoc) {
1983 setTypeParamList(typeParamList);
1984}
1985
1986ObjCCategoryDecl *ObjCCategoryDecl::Create(ASTContext &C, DeclContext *DC,
1987 SourceLocation AtLoc,
1988 SourceLocation ClassNameLoc,
1989 SourceLocation CategoryNameLoc,
1990 IdentifierInfo *Id,
1991 ObjCInterfaceDecl *IDecl,
1992 ObjCTypeParamList *typeParamList,
1993 SourceLocation IvarLBraceLoc,
1994 SourceLocation IvarRBraceLoc) {
1995 auto *CatDecl =
1996 new (C, DC) ObjCCategoryDecl(DC, AtLoc, ClassNameLoc, CategoryNameLoc, Id,
1997 IDecl, typeParamList, IvarLBraceLoc,
1998 IvarRBraceLoc);
1999 if (IDecl) {
2000 // Link this category into its class's category list.
2001 CatDecl->NextClassCategory = IDecl->getCategoryListRaw();
2002 if (IDecl->hasDefinition()) {
2003 IDecl->setCategoryListRaw(CatDecl);
2004 if (ASTMutationListener *L = C.getASTMutationListener())
2005 L->AddedObjCCategoryToInterface(CatDecl, IDecl);
2006 }
2007 }
2008
2009 return CatDecl;
2010}
2011
2012ObjCCategoryDecl *ObjCCategoryDecl::CreateDeserialized(ASTContext &C,
2013 unsigned ID) {
2014 return new (C, ID) ObjCCategoryDecl(nullptr, SourceLocation(),
2015 SourceLocation(), SourceLocation(),
2016 nullptr, nullptr, nullptr);
2017}
2018
2019ObjCCategoryImplDecl *ObjCCategoryDecl::getImplementation() const {
2020 return getASTContext().getObjCImplementation(
2021 const_cast<ObjCCategoryDecl*>(this));
2022}
2023
2024void ObjCCategoryDecl::setImplementation(ObjCCategoryImplDecl *ImplD) {
2025 getASTContext().setObjCImplementation(this, ImplD);
2026}
2027
2028void ObjCCategoryDecl::setTypeParamList(ObjCTypeParamList *TPL) {
2029 TypeParamList = TPL;
2030 if (!TPL)
2031 return;
2032 // Set the declaration context of each of the type parameters.
2033 for (auto *typeParam : *TypeParamList)
2034 typeParam->setDeclContext(this);
2035}
2036
2037//===----------------------------------------------------------------------===//
2038// ObjCCategoryImplDecl
2039//===----------------------------------------------------------------------===//
2040
2041void ObjCCategoryImplDecl::anchor() {}
2042
2043ObjCCategoryImplDecl *
2044ObjCCategoryImplDecl::Create(ASTContext &C, DeclContext *DC,
2045 IdentifierInfo *Id,
2046 ObjCInterfaceDecl *ClassInterface,
2047 SourceLocation nameLoc,
2048 SourceLocation atStartLoc,
2049 SourceLocation CategoryNameLoc) {
2050 if (ClassInterface && ClassInterface->hasDefinition())
2051 ClassInterface = ClassInterface->getDefinition();
2052 return new (C, DC) ObjCCategoryImplDecl(DC, Id, ClassInterface, nameLoc,
2053 atStartLoc, CategoryNameLoc);
2054}
2055
2056ObjCCategoryImplDecl *ObjCCategoryImplDecl::CreateDeserialized(ASTContext &C,
2057 unsigned ID) {
2058 return new (C, ID) ObjCCategoryImplDecl(nullptr, nullptr, nullptr,
2059 SourceLocation(), SourceLocation(),
2060 SourceLocation());
2061}
2062
2063ObjCCategoryDecl *ObjCCategoryImplDecl::getCategoryDecl() const {
2064 // The class interface might be NULL if we are working with invalid code.
2065 if (const ObjCInterfaceDecl *ID = getClassInterface())
2066 return ID->FindCategoryDeclaration(getIdentifier());
2067 return nullptr;
2068}
2069
2070void ObjCImplDecl::anchor() {}
2071
2072void ObjCImplDecl::addPropertyImplementation(ObjCPropertyImplDecl *property) {
2073 // FIXME: The context should be correct before we get here.
2074 property->setLexicalDeclContext(this);
2075 addDecl(property);
2076}
2077
2078void ObjCImplDecl::setClassInterface(ObjCInterfaceDecl *IFace) {
2079 ASTContext &Ctx = getASTContext();
2080
2081 if (auto *ImplD = dyn_cast_or_null<ObjCImplementationDecl>(this)) {
2082 if (IFace)
2083 Ctx.setObjCImplementation(IFace, ImplD);
2084
2085 } else if (auto *ImplD = dyn_cast_or_null<ObjCCategoryImplDecl>(this)) {
2086 if (ObjCCategoryDecl *CD = IFace->FindCategoryDeclaration(getIdentifier()))
2087 Ctx.setObjCImplementation(CD, ImplD);
2088 }
2089
2090 ClassInterface = IFace;
2091}
2092
2093/// FindPropertyImplIvarDecl - This method lookup the ivar in the list of
2094/// properties implemented in this \@implementation block and returns
2095/// the implemented property that uses it.
2096ObjCPropertyImplDecl *ObjCImplDecl::
2097FindPropertyImplIvarDecl(IdentifierInfo *ivarId) const {
2098 for (auto *PID : property_impls())
2099 if (PID->getPropertyIvarDecl() &&
2100 PID->getPropertyIvarDecl()->getIdentifier() == ivarId)
2101 return PID;
2102 return nullptr;
2103}
2104
2105/// FindPropertyImplDecl - This method looks up a previous ObjCPropertyImplDecl
2106/// added to the list of those properties \@synthesized/\@dynamic in this
2107/// category \@implementation block.
2108ObjCPropertyImplDecl *ObjCImplDecl::
2109FindPropertyImplDecl(IdentifierInfo *Id,
2110 ObjCPropertyQueryKind QueryKind) const {
2111 ObjCPropertyImplDecl *ClassPropImpl = nullptr;
2112 for (auto *PID : property_impls())
2113 // If queryKind is unknown, we return the instance property if one
2114 // exists; otherwise we return the class property.
2115 if (PID->getPropertyDecl()->getIdentifier() == Id) {
2116 if ((QueryKind == ObjCPropertyQueryKind::OBJC_PR_query_unknown &&
2117 !PID->getPropertyDecl()->isClassProperty()) ||
2118 (QueryKind == ObjCPropertyQueryKind::OBJC_PR_query_class &&
2119 PID->getPropertyDecl()->isClassProperty()) ||
2120 (QueryKind == ObjCPropertyQueryKind::OBJC_PR_query_instance &&
2121 !PID->getPropertyDecl()->isClassProperty()))
2122 return PID;
2123
2124 if (PID->getPropertyDecl()->isClassProperty())
2125 ClassPropImpl = PID;
2126 }
2127
2128 if (QueryKind == ObjCPropertyQueryKind::OBJC_PR_query_unknown)
2129 // We can't find the instance property, return the class property.
2130 return ClassPropImpl;
2131
2132 return nullptr;
2133}
2134
2135raw_ostream &clang::operator<<(raw_ostream &OS,
2136 const ObjCCategoryImplDecl &CID) {
2137 OS << CID.getName();
2138 return OS;
2139}
2140
2141//===----------------------------------------------------------------------===//
2142// ObjCImplementationDecl
2143//===----------------------------------------------------------------------===//
2144
2145void ObjCImplementationDecl::anchor() {}
2146
2147ObjCImplementationDecl *
2148ObjCImplementationDecl::Create(ASTContext &C, DeclContext *DC,
2149 ObjCInterfaceDecl *ClassInterface,
2150 ObjCInterfaceDecl *SuperDecl,
2151 SourceLocation nameLoc,
2152 SourceLocation atStartLoc,
2153 SourceLocation superLoc,
2154 SourceLocation IvarLBraceLoc,
2155 SourceLocation IvarRBraceLoc) {
2156 if (ClassInterface && ClassInterface->hasDefinition())
2157 ClassInterface = ClassInterface->getDefinition();
2158 return new (C, DC) ObjCImplementationDecl(DC, ClassInterface, SuperDecl,
2159 nameLoc, atStartLoc, superLoc,
2160 IvarLBraceLoc, IvarRBraceLoc);
2161}
2162
2163ObjCImplementationDecl *
2164ObjCImplementationDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2165 return new (C, ID) ObjCImplementationDecl(nullptr, nullptr, nullptr,
2166 SourceLocation(), SourceLocation());
2167}
2168
2169void ObjCImplementationDecl::setIvarInitializers(ASTContext &C,
2170 CXXCtorInitializer ** initializers,
2171 unsigned numInitializers) {
2172 if (numInitializers > 0) {
2173 NumIvarInitializers = numInitializers;
2174 auto **ivarInitializers = new (C) CXXCtorInitializer*[NumIvarInitializers];
2175 memcpy(ivarInitializers, initializers,
2176 numInitializers * sizeof(CXXCtorInitializer*));
2177 IvarInitializers = ivarInitializers;
2178 }
2179}
2180
2181ObjCImplementationDecl::init_const_iterator
2182ObjCImplementationDecl::init_begin() const {
2183 return IvarInitializers.get(getASTContext().getExternalSource());
2184}
2185
2186raw_ostream &clang::operator<<(raw_ostream &OS,
2187 const ObjCImplementationDecl &ID) {
2188 OS << ID.getName();
2189 return OS;
2190}
2191
2192//===----------------------------------------------------------------------===//
2193// ObjCCompatibleAliasDecl
2194//===----------------------------------------------------------------------===//
2195
2196void ObjCCompatibleAliasDecl::anchor() {}
2197
2198ObjCCompatibleAliasDecl *
2199ObjCCompatibleAliasDecl::Create(ASTContext &C, DeclContext *DC,
2200 SourceLocation L,
2201 IdentifierInfo *Id,
2202 ObjCInterfaceDecl* AliasedClass) {
2203 return new (C, DC) ObjCCompatibleAliasDecl(DC, L, Id, AliasedClass);
2204}
2205
2206ObjCCompatibleAliasDecl *
2207ObjCCompatibleAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
2208 return new (C, ID) ObjCCompatibleAliasDecl(nullptr, SourceLocation(),
2209 nullptr, nullptr);
2210}
2211
2212//===----------------------------------------------------------------------===//
2213// ObjCPropertyDecl
2214//===----------------------------------------------------------------------===//
2215
2216void ObjCPropertyDecl::anchor() {}
2217
2218ObjCPropertyDecl *ObjCPropertyDecl::Create(ASTContext &C, DeclContext *DC,
2219 SourceLocation L,
2220 IdentifierInfo *Id,
2221 SourceLocation AtLoc,
2222 SourceLocation LParenLoc,
2223 QualType T,
2224 TypeSourceInfo *TSI,
2225 PropertyControl propControl) {
2226 return new (C, DC) ObjCPropertyDecl(DC, L, Id, AtLoc, LParenLoc, T, TSI,
2227 propControl);
2228}
2229
2230ObjCPropertyDecl *ObjCPropertyDecl::CreateDeserialized(ASTContext &C,
2231 unsigned ID) {
2232 return new (C, ID) ObjCPropertyDecl(nullptr, SourceLocation(), nullptr,
2233 SourceLocation(), SourceLocation(),
2234 QualType(), nullptr, None);
2235}
2236
2237QualType ObjCPropertyDecl::getUsageType(QualType objectType) const {
2238 return DeclType.substObjCMemberType(objectType, getDeclContext(),
2239 ObjCSubstitutionContext::Property);
2240}
2241
2242//===----------------------------------------------------------------------===//
2243// ObjCPropertyImplDecl
2244//===----------------------------------------------------------------------===//
2245
2246ObjCPropertyImplDecl *ObjCPropertyImplDecl::Create(ASTContext &C,
2247 DeclContext *DC,
2248 SourceLocation atLoc,
2249 SourceLocation L,
2250 ObjCPropertyDecl *property,
2251 Kind PK,
2252 ObjCIvarDecl *ivar,
2253 SourceLocation ivarLoc) {
2254 return new (C, DC) ObjCPropertyImplDecl(DC, atLoc, L, property, PK, ivar,
2255 ivarLoc);
2256}
2257
2258ObjCPropertyImplDecl *ObjCPropertyImplDecl::CreateDeserialized(ASTContext &C,
2259 unsigned ID) {
2260 return new (C, ID) ObjCPropertyImplDecl(nullptr, SourceLocation(),
2261 SourceLocation(), nullptr, Dynamic,
2262 nullptr, SourceLocation());
2263}
2264
2265SourceRange ObjCPropertyImplDecl::getSourceRange() const {
2266 SourceLocation EndLoc = getLocation();
2267 if (IvarLoc.isValid())
2268 EndLoc = IvarLoc;
2269
2270 return SourceRange(AtLoc, EndLoc);
2271}