forked from OSchip/llvm-project
777 lines
29 KiB
C++
777 lines
29 KiB
C++
//===- IndexDecl.cpp - Indexing declarations ------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "IndexingContext.h"
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#include "clang/AST/Attr.h"
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#include "clang/AST/DeclVisitor.h"
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#include "clang/Index/IndexDataConsumer.h"
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using namespace clang;
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using namespace index;
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#define TRY_DECL(D,CALL_EXPR) \
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do { \
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if (!IndexCtx.shouldIndex(D)) return true; \
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if (!CALL_EXPR) \
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return false; \
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} while (0)
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#define TRY_TO(CALL_EXPR) \
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do { \
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if (!CALL_EXPR) \
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return false; \
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} while (0)
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namespace {
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class IndexingDeclVisitor : public ConstDeclVisitor<IndexingDeclVisitor, bool> {
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IndexingContext &IndexCtx;
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public:
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explicit IndexingDeclVisitor(IndexingContext &indexCtx)
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: IndexCtx(indexCtx) { }
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bool Handled = true;
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bool VisitDecl(const Decl *D) {
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Handled = false;
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return true;
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}
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void handleTemplateArgumentLoc(const TemplateArgumentLoc &TALoc,
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const NamedDecl *Parent,
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const DeclContext *DC) {
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const TemplateArgumentLocInfo &LocInfo = TALoc.getLocInfo();
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switch (TALoc.getArgument().getKind()) {
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case TemplateArgument::Expression:
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IndexCtx.indexBody(LocInfo.getAsExpr(), Parent, DC);
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break;
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case TemplateArgument::Type:
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IndexCtx.indexTypeSourceInfo(LocInfo.getAsTypeSourceInfo(), Parent, DC);
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break;
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case TemplateArgument::Template:
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case TemplateArgument::TemplateExpansion:
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IndexCtx.indexNestedNameSpecifierLoc(TALoc.getTemplateQualifierLoc(),
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Parent, DC);
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if (const TemplateDecl *TD = TALoc.getArgument()
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.getAsTemplateOrTemplatePattern()
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.getAsTemplateDecl()) {
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if (const NamedDecl *TTD = TD->getTemplatedDecl())
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IndexCtx.handleReference(TTD, TALoc.getTemplateNameLoc(), Parent, DC);
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}
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break;
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default:
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break;
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}
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}
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/// Returns true if the given method has been defined explicitly by the
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/// user.
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static bool hasUserDefined(const ObjCMethodDecl *D,
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const ObjCImplDecl *Container) {
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const ObjCMethodDecl *MD = Container->getMethod(D->getSelector(),
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D->isInstanceMethod());
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return MD && !MD->isImplicit() && MD->isThisDeclarationADefinition() &&
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!MD->isSynthesizedAccessorStub();
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}
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void handleDeclarator(const DeclaratorDecl *D,
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const NamedDecl *Parent = nullptr,
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bool isIBType = false) {
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if (!Parent) Parent = D;
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IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), Parent,
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Parent->getLexicalDeclContext(),
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/*isBase=*/false, isIBType);
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IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), Parent);
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auto IndexDefaultParmeterArgument = [&](const ParmVarDecl *Parm,
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const NamedDecl *Parent) {
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if (Parm->hasDefaultArg() && !Parm->hasUninstantiatedDefaultArg() &&
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!Parm->hasUnparsedDefaultArg())
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IndexCtx.indexBody(Parm->getDefaultArg(), Parent);
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};
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if (IndexCtx.shouldIndexFunctionLocalSymbols()) {
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if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
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auto *DC = Parm->getDeclContext();
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if (auto *FD = dyn_cast<FunctionDecl>(DC)) {
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if (IndexCtx.shouldIndexParametersInDeclarations() ||
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FD->isThisDeclarationADefinition())
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IndexCtx.handleDecl(Parm);
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} else if (auto *MD = dyn_cast<ObjCMethodDecl>(DC)) {
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if (MD->isThisDeclarationADefinition())
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IndexCtx.handleDecl(Parm);
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} else {
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IndexCtx.handleDecl(Parm);
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}
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} else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
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if (IndexCtx.shouldIndexParametersInDeclarations() ||
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FD->isThisDeclarationADefinition()) {
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for (const auto *PI : FD->parameters()) {
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IndexDefaultParmeterArgument(PI, D);
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IndexCtx.handleDecl(PI);
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}
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}
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}
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} else {
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// Index the default parameter value for function definitions.
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if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
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if (FD->isThisDeclarationADefinition()) {
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for (const auto *PV : FD->parameters()) {
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IndexDefaultParmeterArgument(PV, D);
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}
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}
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}
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}
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}
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bool handleObjCMethod(const ObjCMethodDecl *D,
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const ObjCPropertyDecl *AssociatedProp = nullptr) {
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SmallVector<SymbolRelation, 4> Relations;
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SmallVector<const ObjCMethodDecl*, 4> Overriden;
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D->getOverriddenMethods(Overriden);
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for(auto overridden: Overriden) {
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Relations.emplace_back((unsigned) SymbolRole::RelationOverrideOf,
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overridden);
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}
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if (AssociatedProp)
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Relations.emplace_back((unsigned)SymbolRole::RelationAccessorOf,
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AssociatedProp);
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// getLocation() returns beginning token of a method declaration, but for
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// indexing purposes we want to point to the base name.
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SourceLocation MethodLoc = D->getSelectorStartLoc();
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if (MethodLoc.isInvalid())
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MethodLoc = D->getLocation();
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SourceLocation AttrLoc;
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// check for (getter=/setter=)
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if (AssociatedProp) {
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bool isGetter = !D->param_size();
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AttrLoc = isGetter ?
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AssociatedProp->getGetterNameLoc():
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AssociatedProp->getSetterNameLoc();
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}
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SymbolRoleSet Roles = (SymbolRoleSet)SymbolRole::Dynamic;
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if (D->isImplicit()) {
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if (AttrLoc.isValid()) {
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MethodLoc = AttrLoc;
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} else {
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Roles |= (SymbolRoleSet)SymbolRole::Implicit;
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}
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} else if (AttrLoc.isValid()) {
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IndexCtx.handleReference(D, AttrLoc, cast<NamedDecl>(D->getDeclContext()),
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D->getDeclContext(), 0);
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}
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TRY_DECL(D, IndexCtx.handleDecl(D, MethodLoc, Roles, Relations));
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IndexCtx.indexTypeSourceInfo(D->getReturnTypeSourceInfo(), D);
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bool hasIBActionAndFirst = D->hasAttr<IBActionAttr>();
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for (const auto *I : D->parameters()) {
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handleDeclarator(I, D, /*isIBType=*/hasIBActionAndFirst);
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hasIBActionAndFirst = false;
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}
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if (D->isThisDeclarationADefinition()) {
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const Stmt *Body = D->getBody();
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if (Body) {
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IndexCtx.indexBody(Body, D, D);
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}
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}
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return true;
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}
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/// Gather the declarations which the given declaration \D overrides in a
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/// pseudo-override manner.
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///
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/// Pseudo-overrides occur when a class template specialization declares
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/// a declaration that has the same name as a similar declaration in the
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/// non-specialized template.
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void
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gatherTemplatePseudoOverrides(const NamedDecl *D,
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SmallVectorImpl<SymbolRelation> &Relations) {
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if (!IndexCtx.getLangOpts().CPlusPlus)
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return;
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const auto *CTSD =
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dyn_cast<ClassTemplateSpecializationDecl>(D->getLexicalDeclContext());
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if (!CTSD)
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return;
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llvm::PointerUnion<ClassTemplateDecl *,
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ClassTemplatePartialSpecializationDecl *>
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Template = CTSD->getSpecializedTemplateOrPartial();
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if (const auto *CTD = Template.dyn_cast<ClassTemplateDecl *>()) {
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const CXXRecordDecl *Pattern = CTD->getTemplatedDecl();
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bool TypeOverride = isa<TypeDecl>(D);
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for (const NamedDecl *ND : Pattern->lookup(D->getDeclName())) {
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if (const auto *CTD = dyn_cast<ClassTemplateDecl>(ND))
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ND = CTD->getTemplatedDecl();
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if (ND->isImplicit())
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continue;
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// Types can override other types.
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if (!TypeOverride) {
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if (ND->getKind() != D->getKind())
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continue;
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} else if (!isa<TypeDecl>(ND))
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continue;
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if (const auto *FD = dyn_cast<FunctionDecl>(ND)) {
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const auto *DFD = cast<FunctionDecl>(D);
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// Function overrides are approximated using the number of parameters.
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if (FD->getStorageClass() != DFD->getStorageClass() ||
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FD->getNumParams() != DFD->getNumParams())
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continue;
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}
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Relations.emplace_back(
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SymbolRoleSet(SymbolRole::RelationSpecializationOf), ND);
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}
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}
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}
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bool VisitFunctionDecl(const FunctionDecl *D) {
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SymbolRoleSet Roles{};
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SmallVector<SymbolRelation, 4> Relations;
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if (auto *CXXMD = dyn_cast<CXXMethodDecl>(D)) {
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if (CXXMD->isVirtual())
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Roles |= (unsigned)SymbolRole::Dynamic;
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for (const CXXMethodDecl *O : CXXMD->overridden_methods()) {
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Relations.emplace_back((unsigned)SymbolRole::RelationOverrideOf, O);
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}
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}
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gatherTemplatePseudoOverrides(D, Relations);
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if (const auto *Base = D->getPrimaryTemplate())
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Relations.push_back(
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SymbolRelation(SymbolRoleSet(SymbolRole::RelationSpecializationOf),
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Base->getTemplatedDecl()));
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TRY_DECL(D, IndexCtx.handleDecl(D, Roles, Relations));
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handleDeclarator(D);
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if (const CXXConstructorDecl *Ctor = dyn_cast<CXXConstructorDecl>(D)) {
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IndexCtx.handleReference(Ctor->getParent(), Ctor->getLocation(),
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Ctor->getParent(), Ctor->getDeclContext(),
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(unsigned)SymbolRole::NameReference);
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// Constructor initializers.
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for (const auto *Init : Ctor->inits()) {
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if (Init->isWritten()) {
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IndexCtx.indexTypeSourceInfo(Init->getTypeSourceInfo(), D);
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if (const FieldDecl *Member = Init->getAnyMember())
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IndexCtx.handleReference(Member, Init->getMemberLocation(), D, D,
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(unsigned)SymbolRole::Write);
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IndexCtx.indexBody(Init->getInit(), D, D);
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}
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}
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} else if (const CXXDestructorDecl *Dtor = dyn_cast<CXXDestructorDecl>(D)) {
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if (auto TypeNameInfo = Dtor->getNameInfo().getNamedTypeInfo()) {
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IndexCtx.handleReference(Dtor->getParent(),
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TypeNameInfo->getTypeLoc().getBeginLoc(),
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Dtor->getParent(), Dtor->getDeclContext(),
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(unsigned)SymbolRole::NameReference);
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}
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} else if (const auto *Guide = dyn_cast<CXXDeductionGuideDecl>(D)) {
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IndexCtx.handleReference(Guide->getDeducedTemplate()->getTemplatedDecl(),
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Guide->getLocation(), Guide,
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Guide->getDeclContext());
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}
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// Template specialization arguments.
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if (const ASTTemplateArgumentListInfo *TemplateArgInfo =
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D->getTemplateSpecializationArgsAsWritten()) {
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for (const auto &Arg : TemplateArgInfo->arguments())
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handleTemplateArgumentLoc(Arg, D, D->getLexicalDeclContext());
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}
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if (D->isThisDeclarationADefinition()) {
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const Stmt *Body = D->getBody();
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if (Body) {
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IndexCtx.indexBody(Body, D, D);
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}
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}
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return true;
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}
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bool VisitVarDecl(const VarDecl *D) {
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SmallVector<SymbolRelation, 4> Relations;
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gatherTemplatePseudoOverrides(D, Relations);
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TRY_DECL(D, IndexCtx.handleDecl(D, SymbolRoleSet(), Relations));
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handleDeclarator(D);
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IndexCtx.indexBody(D->getInit(), D);
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return true;
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}
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bool VisitDecompositionDecl(const DecompositionDecl *D) {
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for (const auto *Binding : D->bindings())
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TRY_DECL(Binding, IndexCtx.handleDecl(Binding));
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return Base::VisitDecompositionDecl(D);
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}
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bool VisitFieldDecl(const FieldDecl *D) {
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SmallVector<SymbolRelation, 4> Relations;
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gatherTemplatePseudoOverrides(D, Relations);
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TRY_DECL(D, IndexCtx.handleDecl(D, SymbolRoleSet(), Relations));
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handleDeclarator(D);
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if (D->isBitField())
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IndexCtx.indexBody(D->getBitWidth(), D);
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else if (D->hasInClassInitializer())
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IndexCtx.indexBody(D->getInClassInitializer(), D);
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return true;
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}
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bool VisitObjCIvarDecl(const ObjCIvarDecl *D) {
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if (D->getSynthesize()) {
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// handled in VisitObjCPropertyImplDecl
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return true;
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}
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TRY_DECL(D, IndexCtx.handleDecl(D));
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handleDeclarator(D);
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return true;
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}
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bool VisitMSPropertyDecl(const MSPropertyDecl *D) {
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TRY_DECL(D, IndexCtx.handleDecl(D));
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handleDeclarator(D);
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return true;
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}
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bool VisitEnumConstantDecl(const EnumConstantDecl *D) {
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TRY_DECL(D, IndexCtx.handleDecl(D));
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IndexCtx.indexBody(D->getInitExpr(), D);
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return true;
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}
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bool VisitTypedefNameDecl(const TypedefNameDecl *D) {
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if (!D->isTransparentTag()) {
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SmallVector<SymbolRelation, 4> Relations;
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gatherTemplatePseudoOverrides(D, Relations);
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TRY_DECL(D, IndexCtx.handleDecl(D, SymbolRoleSet(), Relations));
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IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), D);
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}
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return true;
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}
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bool VisitTagDecl(const TagDecl *D) {
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// Non-free standing tags are handled in indexTypeSourceInfo.
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if (D->isFreeStanding()) {
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if (D->isThisDeclarationADefinition()) {
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SmallVector<SymbolRelation, 4> Relations;
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gatherTemplatePseudoOverrides(D, Relations);
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IndexCtx.indexTagDecl(D, Relations);
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} else {
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SmallVector<SymbolRelation, 1> Relations;
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gatherTemplatePseudoOverrides(D, Relations);
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return IndexCtx.handleDecl(D, D->getLocation(), SymbolRoleSet(),
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Relations, D->getLexicalDeclContext());
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}
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}
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return true;
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}
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bool handleReferencedProtocols(const ObjCProtocolList &ProtList,
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const ObjCContainerDecl *ContD,
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SourceLocation SuperLoc) {
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ObjCInterfaceDecl::protocol_loc_iterator LI = ProtList.loc_begin();
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for (ObjCInterfaceDecl::protocol_iterator
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I = ProtList.begin(), E = ProtList.end(); I != E; ++I, ++LI) {
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SourceLocation Loc = *LI;
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ObjCProtocolDecl *PD = *I;
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SymbolRoleSet roles{};
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if (Loc == SuperLoc)
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roles |= (SymbolRoleSet)SymbolRole::Implicit;
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TRY_TO(IndexCtx.handleReference(PD, Loc, ContD, ContD, roles,
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SymbolRelation{(unsigned)SymbolRole::RelationBaseOf, ContD}));
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}
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return true;
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}
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bool VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D) {
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if (D->isThisDeclarationADefinition()) {
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TRY_DECL(D, IndexCtx.handleDecl(D));
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SourceLocation SuperLoc = D->getSuperClassLoc();
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if (auto *SuperD = D->getSuperClass()) {
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bool hasSuperTypedef = false;
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if (auto *TInfo = D->getSuperClassTInfo()) {
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if (auto *TT = TInfo->getType()->getAs<TypedefType>()) {
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if (auto *TD = TT->getDecl()) {
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hasSuperTypedef = true;
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TRY_TO(IndexCtx.handleReference(TD, SuperLoc, D, D,
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SymbolRoleSet()));
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}
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}
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}
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SymbolRoleSet superRoles{};
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if (hasSuperTypedef)
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superRoles |= (SymbolRoleSet)SymbolRole::Implicit;
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TRY_TO(IndexCtx.handleReference(SuperD, SuperLoc, D, D, superRoles,
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SymbolRelation{(unsigned)SymbolRole::RelationBaseOf, D}));
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}
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TRY_TO(handleReferencedProtocols(D->getReferencedProtocols(), D,
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SuperLoc));
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TRY_TO(IndexCtx.indexDeclContext(D));
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} else {
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return IndexCtx.handleReference(D, D->getLocation(), nullptr,
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D->getDeclContext(), SymbolRoleSet());
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}
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return true;
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}
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bool VisitObjCProtocolDecl(const ObjCProtocolDecl *D) {
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if (D->isThisDeclarationADefinition()) {
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TRY_DECL(D, IndexCtx.handleDecl(D));
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TRY_TO(handleReferencedProtocols(D->getReferencedProtocols(), D,
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/*SuperLoc=*/SourceLocation()));
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TRY_TO(IndexCtx.indexDeclContext(D));
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} else {
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return IndexCtx.handleReference(D, D->getLocation(), nullptr,
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D->getDeclContext(), SymbolRoleSet());
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}
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return true;
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}
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bool VisitObjCImplementationDecl(const ObjCImplementationDecl *D) {
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const ObjCInterfaceDecl *Class = D->getClassInterface();
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if (!Class)
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return true;
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if (Class->isImplicitInterfaceDecl())
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IndexCtx.handleDecl(Class);
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TRY_DECL(D, IndexCtx.handleDecl(D));
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// Visit implicit @synthesize property implementations first as their
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// location is reported at the name of the @implementation block. This
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// serves no purpose other than to simplify the FileCheck-based tests.
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for (const auto *I : D->property_impls()) {
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if (I->getLocation().isInvalid())
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IndexCtx.indexDecl(I);
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}
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for (const auto *I : D->decls()) {
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if (!isa<ObjCPropertyImplDecl>(I) ||
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cast<ObjCPropertyImplDecl>(I)->getLocation().isValid())
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IndexCtx.indexDecl(I);
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}
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return true;
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}
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bool VisitObjCCategoryDecl(const ObjCCategoryDecl *D) {
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if (!IndexCtx.shouldIndex(D))
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return true;
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const ObjCInterfaceDecl *C = D->getClassInterface();
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if (!C)
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return true;
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TRY_TO(IndexCtx.handleReference(C, D->getLocation(), D, D, SymbolRoleSet(),
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SymbolRelation{
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(unsigned)SymbolRole::RelationExtendedBy, D
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}));
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SourceLocation CategoryLoc = D->getCategoryNameLoc();
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if (!CategoryLoc.isValid())
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CategoryLoc = D->getLocation();
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TRY_TO(IndexCtx.handleDecl(D, CategoryLoc));
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TRY_TO(handleReferencedProtocols(D->getReferencedProtocols(), D,
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/*SuperLoc=*/SourceLocation()));
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TRY_TO(IndexCtx.indexDeclContext(D));
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return true;
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}
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bool VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D) {
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const ObjCCategoryDecl *Cat = D->getCategoryDecl();
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if (!Cat)
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return true;
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const ObjCInterfaceDecl *C = D->getClassInterface();
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if (C)
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TRY_TO(IndexCtx.handleReference(C, D->getLocation(), D, D,
|
|
SymbolRoleSet()));
|
|
SourceLocation CategoryLoc = D->getCategoryNameLoc();
|
|
if (!CategoryLoc.isValid())
|
|
CategoryLoc = D->getLocation();
|
|
TRY_DECL(D, IndexCtx.handleDecl(D, CategoryLoc));
|
|
IndexCtx.indexDeclContext(D);
|
|
return true;
|
|
}
|
|
|
|
bool VisitObjCMethodDecl(const ObjCMethodDecl *D) {
|
|
// Methods associated with a property, even user-declared ones, are
|
|
// handled when we handle the property.
|
|
if (D->isPropertyAccessor())
|
|
return true;
|
|
|
|
handleObjCMethod(D);
|
|
return true;
|
|
}
|
|
|
|
bool VisitObjCPropertyDecl(const ObjCPropertyDecl *D) {
|
|
if (ObjCMethodDecl *MD = D->getGetterMethodDecl())
|
|
if (MD->getLexicalDeclContext() == D->getLexicalDeclContext())
|
|
handleObjCMethod(MD, D);
|
|
if (ObjCMethodDecl *MD = D->getSetterMethodDecl())
|
|
if (MD->getLexicalDeclContext() == D->getLexicalDeclContext())
|
|
handleObjCMethod(MD, D);
|
|
TRY_DECL(D, IndexCtx.handleDecl(D));
|
|
if (IBOutletCollectionAttr *attr = D->getAttr<IBOutletCollectionAttr>())
|
|
IndexCtx.indexTypeSourceInfo(attr->getInterfaceLoc(), D,
|
|
D->getLexicalDeclContext(), false, true);
|
|
IndexCtx.indexTypeSourceInfo(D->getTypeSourceInfo(), D);
|
|
return true;
|
|
}
|
|
|
|
bool VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D) {
|
|
ObjCPropertyDecl *PD = D->getPropertyDecl();
|
|
auto *Container = cast<ObjCImplDecl>(D->getDeclContext());
|
|
SourceLocation Loc = D->getLocation();
|
|
SymbolRoleSet Roles = 0;
|
|
SmallVector<SymbolRelation, 1> Relations;
|
|
|
|
if (ObjCIvarDecl *ID = D->getPropertyIvarDecl())
|
|
Relations.push_back({(SymbolRoleSet)SymbolRole::RelationAccessorOf, ID});
|
|
if (Loc.isInvalid()) {
|
|
Loc = Container->getLocation();
|
|
Roles |= (SymbolRoleSet)SymbolRole::Implicit;
|
|
}
|
|
TRY_DECL(D, IndexCtx.handleDecl(D, Loc, Roles, Relations));
|
|
|
|
if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
|
|
return true;
|
|
|
|
assert(D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize);
|
|
SymbolRoleSet AccessorMethodRoles =
|
|
SymbolRoleSet(SymbolRole::Dynamic) | SymbolRoleSet(SymbolRole::Implicit);
|
|
if (ObjCMethodDecl *MD = PD->getGetterMethodDecl()) {
|
|
if (MD->isPropertyAccessor() && !hasUserDefined(MD, Container))
|
|
IndexCtx.handleDecl(MD, Loc, AccessorMethodRoles, {}, Container);
|
|
}
|
|
if (ObjCMethodDecl *MD = PD->getSetterMethodDecl()) {
|
|
if (MD->isPropertyAccessor() && !hasUserDefined(MD, Container))
|
|
IndexCtx.handleDecl(MD, Loc, AccessorMethodRoles, {}, Container);
|
|
}
|
|
if (ObjCIvarDecl *IvarD = D->getPropertyIvarDecl()) {
|
|
if (IvarD->getSynthesize()) {
|
|
// For synthesized ivars, use the location of its name in the
|
|
// corresponding @synthesize. If there isn't one, use the containing
|
|
// @implementation's location, rather than the property's location,
|
|
// otherwise the header file containing the @interface will have different
|
|
// indexing contents based on whether the @implementation was present or
|
|
// not in the translation unit.
|
|
SymbolRoleSet IvarRoles = 0;
|
|
SourceLocation IvarLoc = D->getPropertyIvarDeclLoc();
|
|
if (D->getLocation().isInvalid()) {
|
|
IvarLoc = Container->getLocation();
|
|
IvarRoles = (SymbolRoleSet)SymbolRole::Implicit;
|
|
} else if (D->getLocation() == IvarLoc) {
|
|
IvarRoles = (SymbolRoleSet)SymbolRole::Implicit;
|
|
}
|
|
TRY_DECL(IvarD, IndexCtx.handleDecl(IvarD, IvarLoc, IvarRoles));
|
|
} else {
|
|
IndexCtx.handleReference(IvarD, D->getPropertyIvarDeclLoc(), nullptr,
|
|
D->getDeclContext(), SymbolRoleSet());
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool VisitNamespaceDecl(const NamespaceDecl *D) {
|
|
TRY_DECL(D, IndexCtx.handleDecl(D));
|
|
IndexCtx.indexDeclContext(D);
|
|
return true;
|
|
}
|
|
|
|
bool VisitNamespaceAliasDecl(const NamespaceAliasDecl *D) {
|
|
TRY_DECL(D, IndexCtx.handleDecl(D));
|
|
IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), D);
|
|
IndexCtx.handleReference(D->getAliasedNamespace(), D->getTargetNameLoc(), D,
|
|
D->getLexicalDeclContext());
|
|
return true;
|
|
}
|
|
|
|
bool VisitUsingDecl(const UsingDecl *D) {
|
|
IndexCtx.handleDecl(D);
|
|
|
|
const DeclContext *DC = D->getDeclContext()->getRedeclContext();
|
|
const NamedDecl *Parent = dyn_cast<NamedDecl>(DC);
|
|
IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), Parent,
|
|
D->getLexicalDeclContext());
|
|
for (const auto *I : D->shadows())
|
|
IndexCtx.handleReference(I->getUnderlyingDecl(), D->getLocation(), Parent,
|
|
D->getLexicalDeclContext(), SymbolRoleSet());
|
|
return true;
|
|
}
|
|
|
|
bool VisitUsingDirectiveDecl(const UsingDirectiveDecl *D) {
|
|
const DeclContext *DC = D->getDeclContext()->getRedeclContext();
|
|
const NamedDecl *Parent = dyn_cast<NamedDecl>(DC);
|
|
|
|
// NNS for the local 'using namespace' directives is visited by the body
|
|
// visitor.
|
|
if (!D->getParentFunctionOrMethod())
|
|
IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), Parent,
|
|
D->getLexicalDeclContext());
|
|
|
|
return IndexCtx.handleReference(D->getNominatedNamespaceAsWritten(),
|
|
D->getLocation(), Parent,
|
|
D->getLexicalDeclContext(),
|
|
SymbolRoleSet());
|
|
}
|
|
|
|
bool VisitUnresolvedUsingValueDecl(const UnresolvedUsingValueDecl *D) {
|
|
TRY_DECL(D, IndexCtx.handleDecl(D));
|
|
const DeclContext *DC = D->getDeclContext()->getRedeclContext();
|
|
const NamedDecl *Parent = dyn_cast<NamedDecl>(DC);
|
|
IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), Parent,
|
|
D->getLexicalDeclContext());
|
|
return true;
|
|
}
|
|
|
|
bool VisitUnresolvedUsingTypenameDecl(const UnresolvedUsingTypenameDecl *D) {
|
|
TRY_DECL(D, IndexCtx.handleDecl(D));
|
|
const DeclContext *DC = D->getDeclContext()->getRedeclContext();
|
|
const NamedDecl *Parent = dyn_cast<NamedDecl>(DC);
|
|
IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), Parent,
|
|
D->getLexicalDeclContext());
|
|
return true;
|
|
}
|
|
|
|
bool VisitClassTemplateSpecializationDecl(const
|
|
ClassTemplateSpecializationDecl *D) {
|
|
// FIXME: Notify subsequent callbacks if info comes from implicit
|
|
// instantiation.
|
|
llvm::PointerUnion<ClassTemplateDecl *,
|
|
ClassTemplatePartialSpecializationDecl *>
|
|
Template = D->getSpecializedTemplateOrPartial();
|
|
const Decl *SpecializationOf =
|
|
Template.is<ClassTemplateDecl *>()
|
|
? (Decl *)Template.get<ClassTemplateDecl *>()
|
|
: Template.get<ClassTemplatePartialSpecializationDecl *>();
|
|
if (!D->isThisDeclarationADefinition())
|
|
IndexCtx.indexNestedNameSpecifierLoc(D->getQualifierLoc(), D);
|
|
IndexCtx.indexTagDecl(
|
|
D, SymbolRelation(SymbolRoleSet(SymbolRole::RelationSpecializationOf),
|
|
SpecializationOf));
|
|
if (TypeSourceInfo *TSI = D->getTypeAsWritten())
|
|
IndexCtx.indexTypeSourceInfo(TSI, /*Parent=*/nullptr,
|
|
D->getLexicalDeclContext());
|
|
return true;
|
|
}
|
|
|
|
static bool shouldIndexTemplateParameterDefaultValue(const NamedDecl *D) {
|
|
// We want to index the template parameters only once when indexing the
|
|
// canonical declaration.
|
|
if (!D)
|
|
return false;
|
|
if (const auto *FD = dyn_cast<FunctionDecl>(D))
|
|
return FD->getCanonicalDecl() == FD;
|
|
else if (const auto *TD = dyn_cast<TagDecl>(D))
|
|
return TD->getCanonicalDecl() == TD;
|
|
else if (const auto *VD = dyn_cast<VarDecl>(D))
|
|
return VD->getCanonicalDecl() == VD;
|
|
return true;
|
|
}
|
|
|
|
bool VisitTemplateDecl(const TemplateDecl *D) {
|
|
|
|
const NamedDecl *Parent = D->getTemplatedDecl();
|
|
if (!Parent)
|
|
return true;
|
|
|
|
// Index the default values for the template parameters.
|
|
if (D->getTemplateParameters() &&
|
|
shouldIndexTemplateParameterDefaultValue(Parent)) {
|
|
const TemplateParameterList *Params = D->getTemplateParameters();
|
|
for (const NamedDecl *TP : *Params) {
|
|
if (IndexCtx.shouldIndexTemplateParameters())
|
|
IndexCtx.handleDecl(TP);
|
|
if (const auto *TTP = dyn_cast<TemplateTypeParmDecl>(TP)) {
|
|
if (TTP->hasDefaultArgument())
|
|
IndexCtx.indexTypeSourceInfo(TTP->getDefaultArgumentInfo(), Parent);
|
|
} else if (const auto *NTTP = dyn_cast<NonTypeTemplateParmDecl>(TP)) {
|
|
if (NTTP->hasDefaultArgument())
|
|
IndexCtx.indexBody(NTTP->getDefaultArgument(), Parent);
|
|
} else if (const auto *TTPD = dyn_cast<TemplateTemplateParmDecl>(TP)) {
|
|
if (TTPD->hasDefaultArgument())
|
|
handleTemplateArgumentLoc(TTPD->getDefaultArgument(), Parent,
|
|
TP->getLexicalDeclContext());
|
|
}
|
|
}
|
|
}
|
|
|
|
return Visit(Parent);
|
|
}
|
|
|
|
bool VisitFriendDecl(const FriendDecl *D) {
|
|
if (auto ND = D->getFriendDecl()) {
|
|
// FIXME: Ignore a class template in a dependent context, these are not
|
|
// linked properly with their redeclarations, ending up with duplicate
|
|
// USRs.
|
|
// See comment "Friend templates are visible in fairly strange ways." in
|
|
// SemaTemplate.cpp which precedes code that prevents the friend template
|
|
// from becoming visible from the enclosing context.
|
|
if (isa<ClassTemplateDecl>(ND) && D->getDeclContext()->isDependentContext())
|
|
return true;
|
|
return Visit(ND);
|
|
}
|
|
if (auto Ty = D->getFriendType()) {
|
|
IndexCtx.indexTypeSourceInfo(Ty, cast<NamedDecl>(D->getDeclContext()));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool VisitImportDecl(const ImportDecl *D) {
|
|
return IndexCtx.importedModule(D);
|
|
}
|
|
|
|
bool VisitStaticAssertDecl(const StaticAssertDecl *D) {
|
|
IndexCtx.indexBody(D->getAssertExpr(),
|
|
dyn_cast<NamedDecl>(D->getDeclContext()),
|
|
D->getLexicalDeclContext());
|
|
return true;
|
|
}
|
|
};
|
|
|
|
} // anonymous namespace
|
|
|
|
bool IndexingContext::indexDecl(const Decl *D) {
|
|
if (D->isImplicit() && shouldIgnoreIfImplicit(D))
|
|
return true;
|
|
|
|
if (isTemplateImplicitInstantiation(D) && !shouldIndexImplicitInstantiation())
|
|
return true;
|
|
|
|
IndexingDeclVisitor Visitor(*this);
|
|
bool ShouldContinue = Visitor.Visit(D);
|
|
if (!ShouldContinue)
|
|
return false;
|
|
|
|
if (!Visitor.Handled && isa<DeclContext>(D))
|
|
return indexDeclContext(cast<DeclContext>(D));
|
|
|
|
return true;
|
|
}
|
|
|
|
bool IndexingContext::indexDeclContext(const DeclContext *DC) {
|
|
for (const auto *I : DC->decls())
|
|
if (!indexDecl(I))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool IndexingContext::indexTopLevelDecl(const Decl *D) {
|
|
if (D->getLocation().isInvalid())
|
|
return true;
|
|
|
|
if (isa<ObjCMethodDecl>(D))
|
|
return true; // Wait for the objc container.
|
|
|
|
return indexDecl(D);
|
|
}
|
|
|
|
bool IndexingContext::indexDeclGroupRef(DeclGroupRef DG) {
|
|
for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I)
|
|
if (!indexTopLevelDecl(*I))
|
|
return false;
|
|
return true;
|
|
}
|