1 //===- IndexDecl.cpp - Indexing declarations ------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "IndexingContext.h"
11 #include "clang/Index/IndexDataConsumer.h"
12 #include "clang/AST/DeclVisitor.h"
14 using namespace clang;
15 using namespace index;
17 #define TRY_DECL(D,CALL_EXPR) \
19 if (!IndexCtx.shouldIndex(D)) return true; \
24 #define TRY_TO(CALL_EXPR) \
32 class IndexingDeclVisitor : public ConstDeclVisitor<IndexingDeclVisitor, bool> {
33 IndexingContext &IndexCtx;
36 explicit IndexingDeclVisitor(IndexingContext &indexCtx)
37 : IndexCtx(indexCtx) { }
41 bool VisitDecl(const Decl *D) {
46 /// \brief Returns true if the given method has been defined explicitly by the
48 static bool hasUserDefined(const ObjCMethodDecl *D,
49 const ObjCImplDecl *Container) {
50 const ObjCMethodDecl *MD = Container->getMethod(D->getSelector(),
51 D->isInstanceMethod());
52 return MD && !MD->isImplicit() && MD->isThisDeclarationADefinition();
55 void handleTemplateArgumentLoc(const TemplateArgumentLoc &TALoc,
56 const NamedDecl *Parent,
57 const DeclContext *DC) {
58 const TemplateArgumentLocInfo &LocInfo = TALoc.getLocInfo();
59 switch (TALoc.getArgument().getKind()) {
60 case TemplateArgument::Expression:
61 IndexCtx.indexBody(LocInfo.getAsExpr(), Parent, DC);
63 case TemplateArgument::Type:
64 IndexCtx.indexTypeSourceInfo(LocInfo.getAsTypeSourceInfo(), Parent, DC);
66 case TemplateArgument::Template:
67 case TemplateArgument::TemplateExpansion:
68 IndexCtx.indexNestedNameSpecifierLoc(TALoc.getTemplateQualifierLoc(),
70 if (const TemplateDecl *TD = TALoc.getArgument()
71 .getAsTemplateOrTemplatePattern()
72 .getAsTemplateDecl()) {
73 if (const NamedDecl *TTD = TD->getTemplatedDecl())
74 IndexCtx.handleReference(TTD, TALoc.getTemplateNameLoc(), Parent, DC);
82 void handleDeclarator(const DeclaratorDecl *D,
83 const NamedDecl *Parent = nullptr,
84 bool isIBType = false) {
85 if (!Parent) Parent = D;
87 IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), Parent,
88 Parent->getLexicalDeclContext(),
89 /*isBase=*/false, isIBType);
90 IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), Parent);
91 if (IndexCtx.shouldIndexFunctionLocalSymbols()) {
92 // Only index parameters in definitions, parameters in declarations are
94 if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
95 auto *DC = Parm->getDeclContext();
96 if (auto *FD = dyn_cast<FunctionDecl>(DC)) {
97 if (FD->isThisDeclarationADefinition())
98 IndexCtx.handleDecl(Parm);
99 } else if (auto *MD = dyn_cast<ObjCMethodDecl>(DC)) {
100 if (MD->isThisDeclarationADefinition())
101 IndexCtx.handleDecl(Parm);
103 IndexCtx.handleDecl(Parm);
105 } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
106 if (FD->isThisDeclarationADefinition()) {
107 for (auto PI : FD->parameters()) {
108 IndexCtx.handleDecl(PI);
113 // Index the default parameter value for function definitions.
114 if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
115 if (FD->isThisDeclarationADefinition()) {
116 for (const auto *PV : FD->parameters()) {
117 if (PV->hasDefaultArg() && !PV->hasUninstantiatedDefaultArg() &&
118 !PV->hasUnparsedDefaultArg())
119 IndexCtx.indexBody(PV->getDefaultArg(), D);
126 bool handleObjCMethod(const ObjCMethodDecl *D,
127 const ObjCPropertyDecl *AssociatedProp = nullptr) {
128 SmallVector<SymbolRelation, 4> Relations;
129 SmallVector<const ObjCMethodDecl*, 4> Overriden;
131 D->getOverriddenMethods(Overriden);
132 for(auto overridden: Overriden) {
133 Relations.emplace_back((unsigned) SymbolRole::RelationOverrideOf,
137 Relations.emplace_back((unsigned)SymbolRole::RelationAccessorOf,
140 // getLocation() returns beginning token of a method declaration, but for
141 // indexing purposes we want to point to the base name.
142 SourceLocation MethodLoc = D->getSelectorStartLoc();
143 if (MethodLoc.isInvalid())
144 MethodLoc = D->getLocation();
146 SourceLocation AttrLoc;
148 // check for (getter=/setter=)
149 if (AssociatedProp) {
150 bool isGetter = !D->param_size();
152 AssociatedProp->getGetterNameLoc():
153 AssociatedProp->getSetterNameLoc();
156 SymbolRoleSet Roles = (SymbolRoleSet)SymbolRole::Dynamic;
157 if (D->isImplicit()) {
158 if (AttrLoc.isValid()) {
161 Roles |= (SymbolRoleSet)SymbolRole::Implicit;
163 } else if (AttrLoc.isValid()) {
164 IndexCtx.handleReference(D, AttrLoc, cast<NamedDecl>(D->getDeclContext()),
165 D->getDeclContext(), 0);
168 TRY_DECL(D, IndexCtx.handleDecl(D, MethodLoc, Roles, Relations));
169 IndexCtx.indexTypeSourceInfo(D->getReturnTypeSourceInfo(), D);
170 bool hasIBActionAndFirst = D->hasAttr<IBActionAttr>();
171 for (const auto *I : D->parameters()) {
172 handleDeclarator(I, D, /*isIBType=*/hasIBActionAndFirst);
173 hasIBActionAndFirst = false;
176 if (D->isThisDeclarationADefinition()) {
177 const Stmt *Body = D->getBody();
179 IndexCtx.indexBody(Body, D, D);
185 /// Gather the declarations which the given declaration \D overrides in a
186 /// pseudo-override manner.
188 /// Pseudo-overrides occur when a class template specialization declares
189 /// a declaration that has the same name as a similar declaration in the
190 /// non-specialized template.
192 gatherTemplatePseudoOverrides(const NamedDecl *D,
193 SmallVectorImpl<SymbolRelation> &Relations) {
194 if (!IndexCtx.getLangOpts().CPlusPlus)
197 dyn_cast<ClassTemplateSpecializationDecl>(D->getLexicalDeclContext());
200 llvm::PointerUnion<ClassTemplateDecl *,
201 ClassTemplatePartialSpecializationDecl *>
202 Template = CTSD->getSpecializedTemplateOrPartial();
203 if (const auto *CTD = Template.dyn_cast<ClassTemplateDecl *>()) {
204 const CXXRecordDecl *Pattern = CTD->getTemplatedDecl();
205 bool TypeOverride = isa<TypeDecl>(D);
206 for (const NamedDecl *ND : Pattern->lookup(D->getDeclName())) {
207 if (const auto *CTD = dyn_cast<ClassTemplateDecl>(ND))
208 ND = CTD->getTemplatedDecl();
209 if (ND->isImplicit())
211 // Types can override other types.
213 if (ND->getKind() != D->getKind())
215 } else if (!isa<TypeDecl>(ND))
217 if (const auto *FD = dyn_cast<FunctionDecl>(ND)) {
218 const auto *DFD = cast<FunctionDecl>(D);
219 // Function overrides are approximated using the number of parameters.
220 if (FD->getStorageClass() != DFD->getStorageClass() ||
221 FD->getNumParams() != DFD->getNumParams())
224 Relations.emplace_back(
225 SymbolRoleSet(SymbolRole::RelationSpecializationOf), ND);
230 bool VisitFunctionDecl(const FunctionDecl *D) {
231 SymbolRoleSet Roles{};
232 SmallVector<SymbolRelation, 4> Relations;
233 if (auto *CXXMD = dyn_cast<CXXMethodDecl>(D)) {
234 if (CXXMD->isVirtual())
235 Roles |= (unsigned)SymbolRole::Dynamic;
236 for (auto I = CXXMD->begin_overridden_methods(),
237 E = CXXMD->end_overridden_methods(); I != E; ++I) {
238 Relations.emplace_back((unsigned)SymbolRole::RelationOverrideOf, *I);
241 gatherTemplatePseudoOverrides(D, Relations);
242 if (const auto *Base = D->getPrimaryTemplate())
244 SymbolRelation(SymbolRoleSet(SymbolRole::RelationSpecializationOf),
245 Base->getTemplatedDecl()));
247 TRY_DECL(D, IndexCtx.handleDecl(D, Roles, Relations));
250 if (const CXXConstructorDecl *Ctor = dyn_cast<CXXConstructorDecl>(D)) {
251 IndexCtx.handleReference(Ctor->getParent(), Ctor->getLocation(),
252 Ctor->getParent(), Ctor->getDeclContext());
254 // Constructor initializers.
255 for (const auto *Init : Ctor->inits()) {
256 if (Init->isWritten()) {
257 IndexCtx.indexTypeSourceInfo(Init->getTypeSourceInfo(), D);
258 if (const FieldDecl *Member = Init->getAnyMember())
259 IndexCtx.handleReference(Member, Init->getMemberLocation(), D, D,
260 (unsigned)SymbolRole::Write);
261 IndexCtx.indexBody(Init->getInit(), D, D);
264 } else if (const CXXDestructorDecl *Dtor = dyn_cast<CXXDestructorDecl>(D)) {
265 if (auto TypeNameInfo = Dtor->getNameInfo().getNamedTypeInfo()) {
266 IndexCtx.handleReference(Dtor->getParent(),
267 TypeNameInfo->getTypeLoc().getLocStart(),
268 Dtor->getParent(), Dtor->getDeclContext());
271 // Template specialization arguments.
272 if (const ASTTemplateArgumentListInfo *TemplateArgInfo =
273 D->getTemplateSpecializationArgsAsWritten()) {
274 for (const auto &Arg : TemplateArgInfo->arguments())
275 handleTemplateArgumentLoc(Arg, D, D->getLexicalDeclContext());
278 if (D->isThisDeclarationADefinition()) {
279 const Stmt *Body = D->getBody();
281 IndexCtx.indexBody(Body, D, D);
287 bool VisitVarDecl(const VarDecl *D) {
288 SmallVector<SymbolRelation, 4> Relations;
289 gatherTemplatePseudoOverrides(D, Relations);
290 TRY_DECL(D, IndexCtx.handleDecl(D, SymbolRoleSet(), Relations));
292 IndexCtx.indexBody(D->getInit(), D);
296 bool VisitFieldDecl(const FieldDecl *D) {
297 SmallVector<SymbolRelation, 4> Relations;
298 gatherTemplatePseudoOverrides(D, Relations);
299 TRY_DECL(D, IndexCtx.handleDecl(D, SymbolRoleSet(), Relations));
302 IndexCtx.indexBody(D->getBitWidth(), D);
303 else if (D->hasInClassInitializer())
304 IndexCtx.indexBody(D->getInClassInitializer(), D);
308 bool VisitObjCIvarDecl(const ObjCIvarDecl *D) {
309 if (D->getSynthesize()) {
310 // handled in VisitObjCPropertyImplDecl
313 TRY_DECL(D, IndexCtx.handleDecl(D));
318 bool VisitMSPropertyDecl(const MSPropertyDecl *D) {
323 bool VisitEnumConstantDecl(const EnumConstantDecl *D) {
324 TRY_DECL(D, IndexCtx.handleDecl(D));
325 IndexCtx.indexBody(D->getInitExpr(), D);
329 bool VisitTypedefNameDecl(const TypedefNameDecl *D) {
330 if (!D->isTransparentTag()) {
331 SmallVector<SymbolRelation, 4> Relations;
332 gatherTemplatePseudoOverrides(D, Relations);
333 TRY_DECL(D, IndexCtx.handleDecl(D, SymbolRoleSet(), Relations));
334 IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), D);
339 bool VisitTagDecl(const TagDecl *D) {
340 // Non-free standing tags are handled in indexTypeSourceInfo.
341 if (D->isFreeStanding()) {
342 if (D->isThisDeclarationADefinition()) {
343 SmallVector<SymbolRelation, 4> Relations;
344 gatherTemplatePseudoOverrides(D, Relations);
345 IndexCtx.indexTagDecl(D, Relations);
347 auto *Parent = dyn_cast<NamedDecl>(D->getDeclContext());
348 return IndexCtx.handleReference(D, D->getLocation(), Parent,
349 D->getLexicalDeclContext(),
356 bool handleReferencedProtocols(const ObjCProtocolList &ProtList,
357 const ObjCContainerDecl *ContD,
358 SourceLocation SuperLoc) {
359 ObjCInterfaceDecl::protocol_loc_iterator LI = ProtList.loc_begin();
360 for (ObjCInterfaceDecl::protocol_iterator
361 I = ProtList.begin(), E = ProtList.end(); I != E; ++I, ++LI) {
362 SourceLocation Loc = *LI;
363 ObjCProtocolDecl *PD = *I;
364 SymbolRoleSet roles{};
366 roles |= (SymbolRoleSet)SymbolRole::Implicit;
367 TRY_TO(IndexCtx.handleReference(PD, Loc, ContD, ContD, roles,
368 SymbolRelation{(unsigned)SymbolRole::RelationBaseOf, ContD}));
373 bool VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D) {
374 if (D->isThisDeclarationADefinition()) {
375 TRY_DECL(D, IndexCtx.handleDecl(D));
376 SourceLocation SuperLoc = D->getSuperClassLoc();
377 if (auto *SuperD = D->getSuperClass()) {
378 bool hasSuperTypedef = false;
379 if (auto *TInfo = D->getSuperClassTInfo()) {
380 if (auto *TT = TInfo->getType()->getAs<TypedefType>()) {
381 if (auto *TD = TT->getDecl()) {
382 hasSuperTypedef = true;
383 TRY_TO(IndexCtx.handleReference(TD, SuperLoc, D, D,
388 SymbolRoleSet superRoles{};
390 superRoles |= (SymbolRoleSet)SymbolRole::Implicit;
391 TRY_TO(IndexCtx.handleReference(SuperD, SuperLoc, D, D, superRoles,
392 SymbolRelation{(unsigned)SymbolRole::RelationBaseOf, D}));
394 TRY_TO(handleReferencedProtocols(D->getReferencedProtocols(), D,
396 TRY_TO(IndexCtx.indexDeclContext(D));
398 return IndexCtx.handleReference(D, D->getLocation(), nullptr,
399 D->getDeclContext(), SymbolRoleSet());
404 bool VisitObjCProtocolDecl(const ObjCProtocolDecl *D) {
405 if (D->isThisDeclarationADefinition()) {
406 TRY_DECL(D, IndexCtx.handleDecl(D));
407 TRY_TO(handleReferencedProtocols(D->getReferencedProtocols(), D,
408 /*superLoc=*/SourceLocation()));
409 TRY_TO(IndexCtx.indexDeclContext(D));
411 return IndexCtx.handleReference(D, D->getLocation(), nullptr,
412 D->getDeclContext(), SymbolRoleSet());
417 bool VisitObjCImplementationDecl(const ObjCImplementationDecl *D) {
418 const ObjCInterfaceDecl *Class = D->getClassInterface();
422 if (Class->isImplicitInterfaceDecl())
423 IndexCtx.handleDecl(Class);
425 TRY_DECL(D, IndexCtx.handleDecl(D));
427 // Visit implicit @synthesize property implementations first as their
428 // location is reported at the name of the @implementation block. This
429 // serves no purpose other than to simplify the FileCheck-based tests.
430 for (const auto *I : D->property_impls()) {
431 if (I->getLocation().isInvalid())
432 IndexCtx.indexDecl(I);
434 for (const auto *I : D->decls()) {
435 if (!isa<ObjCPropertyImplDecl>(I) ||
436 cast<ObjCPropertyImplDecl>(I)->getLocation().isValid())
437 IndexCtx.indexDecl(I);
443 bool VisitObjCCategoryDecl(const ObjCCategoryDecl *D) {
444 if (!IndexCtx.shouldIndex(D))
446 const ObjCInterfaceDecl *C = D->getClassInterface();
449 TRY_TO(IndexCtx.handleReference(C, D->getLocation(), D, D, SymbolRoleSet(),
451 (unsigned)SymbolRole::RelationExtendedBy, D
453 SourceLocation CategoryLoc = D->getCategoryNameLoc();
454 if (!CategoryLoc.isValid())
455 CategoryLoc = D->getLocation();
456 TRY_TO(IndexCtx.handleDecl(D, CategoryLoc));
457 TRY_TO(handleReferencedProtocols(D->getReferencedProtocols(), D,
458 /*superLoc=*/SourceLocation()));
459 TRY_TO(IndexCtx.indexDeclContext(D));
463 bool VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D) {
464 const ObjCCategoryDecl *Cat = D->getCategoryDecl();
467 const ObjCInterfaceDecl *C = D->getClassInterface();
469 TRY_TO(IndexCtx.handleReference(C, D->getLocation(), D, D,
471 SourceLocation CategoryLoc = D->getCategoryNameLoc();
472 if (!CategoryLoc.isValid())
473 CategoryLoc = D->getLocation();
474 TRY_DECL(D, IndexCtx.handleDecl(D, CategoryLoc));
475 IndexCtx.indexDeclContext(D);
479 bool VisitObjCMethodDecl(const ObjCMethodDecl *D) {
480 // Methods associated with a property, even user-declared ones, are
481 // handled when we handle the property.
482 if (D->isPropertyAccessor())
489 bool VisitObjCPropertyDecl(const ObjCPropertyDecl *D) {
490 if (ObjCMethodDecl *MD = D->getGetterMethodDecl())
491 if (MD->getLexicalDeclContext() == D->getLexicalDeclContext())
492 handleObjCMethod(MD, D);
493 if (ObjCMethodDecl *MD = D->getSetterMethodDecl())
494 if (MD->getLexicalDeclContext() == D->getLexicalDeclContext())
495 handleObjCMethod(MD, D);
496 TRY_DECL(D, IndexCtx.handleDecl(D));
497 if (IBOutletCollectionAttr *attr = D->getAttr<IBOutletCollectionAttr>())
498 IndexCtx.indexTypeSourceInfo(attr->getInterfaceLoc(), D,
499 D->getLexicalDeclContext(), false, true);
500 IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), D);
504 bool VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D) {
505 ObjCPropertyDecl *PD = D->getPropertyDecl();
506 auto *Container = cast<ObjCImplDecl>(D->getDeclContext());
507 SourceLocation Loc = D->getLocation();
508 SymbolRoleSet Roles = 0;
509 SmallVector<SymbolRelation, 1> Relations;
511 if (ObjCIvarDecl *ID = D->getPropertyIvarDecl())
512 Relations.push_back({(SymbolRoleSet)SymbolRole::RelationAccessorOf, ID});
513 if (Loc.isInvalid()) {
514 Loc = Container->getLocation();
515 Roles |= (SymbolRoleSet)SymbolRole::Implicit;
517 TRY_DECL(D, IndexCtx.handleDecl(D, Loc, Roles, Relations));
519 if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
522 assert(D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize);
523 SymbolRoleSet AccessorMethodRoles =
524 SymbolRoleSet(SymbolRole::Dynamic) | SymbolRoleSet(SymbolRole::Implicit);
525 if (ObjCMethodDecl *MD = PD->getGetterMethodDecl()) {
526 if (MD->isPropertyAccessor() &&
527 !hasUserDefined(MD, Container))
528 IndexCtx.handleDecl(MD, Loc, AccessorMethodRoles, {}, Container);
530 if (ObjCMethodDecl *MD = PD->getSetterMethodDecl()) {
531 if (MD->isPropertyAccessor() &&
532 !hasUserDefined(MD, Container))
533 IndexCtx.handleDecl(MD, Loc, AccessorMethodRoles, {}, Container);
535 if (ObjCIvarDecl *IvarD = D->getPropertyIvarDecl()) {
536 if (IvarD->getSynthesize()) {
537 // For synthesized ivars, use the location of its name in the
538 // corresponding @synthesize. If there isn't one, use the containing
539 // @implementation's location, rather than the property's location,
540 // otherwise the header file containing the @interface will have different
541 // indexing contents based on whether the @implementation was present or
542 // not in the translation unit.
543 SymbolRoleSet IvarRoles = 0;
544 SourceLocation IvarLoc = D->getPropertyIvarDeclLoc();
545 if (D->getLocation().isInvalid()) {
546 IvarLoc = Container->getLocation();
547 IvarRoles = (SymbolRoleSet)SymbolRole::Implicit;
548 } else if (D->getLocation() == IvarLoc) {
549 IvarRoles = (SymbolRoleSet)SymbolRole::Implicit;
551 TRY_DECL(IvarD, IndexCtx.handleDecl(IvarD, IvarLoc, IvarRoles));
553 IndexCtx.handleReference(IvarD, D->getPropertyIvarDeclLoc(), nullptr,
554 D->getDeclContext(), SymbolRoleSet());
560 bool VisitNamespaceDecl(const NamespaceDecl *D) {
561 TRY_DECL(D, IndexCtx.handleDecl(D));
562 IndexCtx.indexDeclContext(D);
566 bool VisitNamespaceAliasDecl(const NamespaceAliasDecl *D) {
567 TRY_DECL(D, IndexCtx.handleDecl(D));
568 IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), D);
569 IndexCtx.handleReference(D->getAliasedNamespace(), D->getTargetNameLoc(), D,
570 D->getLexicalDeclContext());
574 bool VisitUsingDecl(const UsingDecl *D) {
575 const DeclContext *DC = D->getDeclContext()->getRedeclContext();
576 const NamedDecl *Parent = dyn_cast<NamedDecl>(DC);
578 IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), Parent,
579 D->getLexicalDeclContext());
580 for (const auto *I : D->shadows())
581 IndexCtx.handleReference(I->getUnderlyingDecl(), D->getLocation(), Parent,
582 D->getLexicalDeclContext(), SymbolRoleSet());
586 bool VisitUsingDirectiveDecl(const UsingDirectiveDecl *D) {
587 const DeclContext *DC = D->getDeclContext()->getRedeclContext();
588 const NamedDecl *Parent = dyn_cast<NamedDecl>(DC);
590 // NNS for the local 'using namespace' directives is visited by the body
592 if (!D->getParentFunctionOrMethod())
593 IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), Parent,
594 D->getLexicalDeclContext());
596 return IndexCtx.handleReference(D->getNominatedNamespaceAsWritten(),
597 D->getLocation(), Parent,
598 D->getLexicalDeclContext(),
602 bool VisitClassTemplateSpecializationDecl(const
603 ClassTemplateSpecializationDecl *D) {
604 // FIXME: Notify subsequent callbacks if info comes from implicit
606 if (D->isThisDeclarationADefinition()) {
607 llvm::PointerUnion<ClassTemplateDecl *,
608 ClassTemplatePartialSpecializationDecl *>
609 Template = D->getSpecializedTemplateOrPartial();
610 const Decl *SpecializationOf =
611 Template.is<ClassTemplateDecl *>()
612 ? (Decl *)Template.get<ClassTemplateDecl *>()
613 : Template.get<ClassTemplatePartialSpecializationDecl *>();
614 IndexCtx.indexTagDecl(
615 D, SymbolRelation(SymbolRoleSet(SymbolRole::RelationSpecializationOf),
618 if (TypeSourceInfo *TSI = D->getTypeAsWritten())
619 IndexCtx.indexTypeSourceInfo(TSI, /*Parent=*/nullptr,
620 D->getLexicalDeclContext());
624 static bool shouldIndexTemplateParameterDefaultValue(const NamedDecl *D) {
627 // We want to index the template parameters only once when indexing the
628 // canonical declaration.
629 if (const auto *FD = dyn_cast<FunctionDecl>(D))
630 return FD->getCanonicalDecl() == FD;
631 else if (const auto *TD = dyn_cast<TagDecl>(D))
632 return TD->getCanonicalDecl() == TD;
633 else if (const auto *VD = dyn_cast<VarDecl>(D))
634 return VD->getCanonicalDecl() == VD;
638 bool VisitTemplateDecl(const TemplateDecl *D) {
639 // FIXME: Template parameters.
641 // Index the default values for the template parameters.
642 const NamedDecl *Parent = D->getTemplatedDecl();
643 if (D->getTemplateParameters() &&
644 shouldIndexTemplateParameterDefaultValue(Parent)) {
645 const TemplateParameterList *Params = D->getTemplateParameters();
646 for (const NamedDecl *TP : *Params) {
647 if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(TP)) {
648 if (TTP->hasDefaultArgument())
649 IndexCtx.indexTypeSourceInfo(TTP->getDefaultArgumentInfo(), Parent);
650 } else if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(TP)) {
651 if (NTTP->hasDefaultArgument())
652 IndexCtx.indexBody(NTTP->getDefaultArgument(), Parent);
653 } else if (const auto *TTPD = dyn_cast<TemplateTemplateParmDecl>(TP)) {
654 if (TTPD->hasDefaultArgument())
655 handleTemplateArgumentLoc(TTPD->getDefaultArgument(), Parent,
661 return Visit(D->getTemplatedDecl());
664 bool VisitFriendDecl(const FriendDecl *D) {
665 if (auto ND = D->getFriendDecl()) {
666 // FIXME: Ignore a class template in a dependent context, these are not
667 // linked properly with their redeclarations, ending up with duplicate
669 // See comment "Friend templates are visible in fairly strange ways." in
670 // SemaTemplate.cpp which precedes code that prevents the friend template
671 // from becoming visible from the enclosing context.
672 if (isa<ClassTemplateDecl>(ND) && D->getDeclContext()->isDependentContext())
676 if (auto Ty = D->getFriendType()) {
677 IndexCtx.indexTypeSourceInfo(Ty, cast<NamedDecl>(D->getDeclContext()));
682 bool VisitImportDecl(const ImportDecl *D) {
683 return IndexCtx.importedModule(D);
687 } // anonymous namespace
689 bool IndexingContext::indexDecl(const Decl *D) {
690 if (D->isImplicit() && shouldIgnoreIfImplicit(D))
693 if (isTemplateImplicitInstantiation(D))
696 IndexingDeclVisitor Visitor(*this);
697 bool ShouldContinue = Visitor.Visit(D);
701 if (!Visitor.Handled && isa<DeclContext>(D))
702 return indexDeclContext(cast<DeclContext>(D));
707 bool IndexingContext::indexDeclContext(const DeclContext *DC) {
708 for (const auto *I : DC->decls())
714 bool IndexingContext::indexTopLevelDecl(const Decl *D) {
715 if (D->getLocation().isInvalid())
718 if (isa<ObjCMethodDecl>(D))
719 return true; // Wait for the objc container.
724 bool IndexingContext::indexDeclGroupRef(DeclGroupRef DG) {
725 for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I)
726 if (!indexTopLevelDecl(*I))