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//===- IndexingAction.cpp - Frontend index action -------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Index/IndexingAction.h"
#include "clang/Index/IndexDataConsumer.h"
#include "IndexingContext.h"
#include "clang/Frontend/FrontendAction.h"
#include "clang/Frontend/MultiplexConsumer.h"
#include "clang/Lex/Preprocessor.h"
using namespace clang;
using namespace clang::index;
void IndexDataConsumer::_anchor() {}
bool IndexDataConsumer::handleDeclOccurence(const Decl *D, SymbolRoleSet Roles,
ArrayRef<SymbolRelation> Relations,
FileID FID, unsigned Offset,
ASTNodeInfo ASTNode) {
return true;
}
bool IndexDataConsumer::handleMacroOccurence(const IdentifierInfo *Name,
const MacroInfo *MI, SymbolRoleSet Roles,
FileID FID, unsigned Offset) {
return true;
}
bool IndexDataConsumer::handleModuleOccurence(const ImportDecl *ImportD,
SymbolRoleSet Roles,
FileID FID, unsigned Offset) {
return true;
}
namespace {
class IndexASTConsumer : public ASTConsumer {
IndexingContext &IndexCtx;
public:
IndexASTConsumer(IndexingContext &IndexCtx)
: IndexCtx(IndexCtx) {}
protected:
void Initialize(ASTContext &Context) override {
IndexCtx.setASTContext(Context);
}
bool HandleTopLevelDecl(DeclGroupRef DG) override {
return IndexCtx.indexDeclGroupRef(DG);
}
void HandleInterestingDecl(DeclGroupRef DG) override {
// Ignore deserialized decls.
}
void HandleTopLevelDeclInObjCContainer(DeclGroupRef DG) override {
IndexCtx.indexDeclGroupRef(DG);
}
void HandleTranslationUnit(ASTContext &Ctx) override {
}
};
class IndexAction : public WrapperFrontendAction {
IndexingOptions IndexOpts;
std::shared_ptr<IndexDataConsumer> DataConsumer;
std::unique_ptr<IndexingContext> IndexCtx;
public:
IndexAction(std::unique_ptr<FrontendAction> WrappedAction,
std::shared_ptr<IndexDataConsumer> DataConsumer,
IndexingOptions Opts)
: WrapperFrontendAction(std::move(WrappedAction)),
IndexOpts(Opts),
DataConsumer(std::move(DataConsumer)) {}
protected:
std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
StringRef InFile) override;
void EndSourceFileAction() override;
};
} // anonymous namespace
void IndexAction::EndSourceFileAction() {
// Invoke wrapped action's method.
WrapperFrontendAction::EndSourceFileAction();
bool IndexActionFailed = !IndexCtx;
if (!IndexActionFailed)
DataConsumer->finish();
}
std::unique_ptr<ASTConsumer>
IndexAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
auto OtherConsumer = WrapperFrontendAction::CreateASTConsumer(CI, InFile);
if (!OtherConsumer)
return nullptr;
IndexCtx.reset(new IndexingContext(IndexOpts, *DataConsumer));
std::vector<std::unique_ptr<ASTConsumer>> Consumers;
Consumers.push_back(std::move(OtherConsumer));
Consumers.push_back(llvm::make_unique<IndexASTConsumer>(*IndexCtx));
return llvm::make_unique<MultiplexConsumer>(std::move(Consumers));
}
std::unique_ptr<FrontendAction>
index::createIndexingAction(std::unique_ptr<FrontendAction> WrappedAction,
std::shared_ptr<IndexDataConsumer> DataConsumer,
IndexingOptions Opts) {
return llvm::make_unique<IndexAction>(std::move(WrappedAction),
std::move(DataConsumer),
Opts);
}
static bool topLevelDeclVisitor(void *context, const Decl *D) {
IndexingContext &IndexCtx = *static_cast<IndexingContext*>(context);
return IndexCtx.indexTopLevelDecl(D);
}
static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IndexCtx) {
Unit.visitLocalTopLevelDecls(&IndexCtx, topLevelDeclVisitor);
}
void index::indexASTUnit(ASTUnit &Unit,
std::shared_ptr<IndexDataConsumer> DataConsumer,
IndexingOptions Opts) {
IndexingContext IndexCtx(Opts, *DataConsumer);
IndexCtx.setASTContext(Unit.getASTContext());
indexTranslationUnit(Unit, IndexCtx);
}
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