forked from OSchip/llvm-project
74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
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#include "IndexAction.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Index/IndexDataConsumer.h"
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#include "clang/Index/IndexingAction.h"
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#include "clang/Tooling/Tooling.h"
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namespace clang {
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namespace clangd {
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namespace {
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// Wraps the index action and reports index data after each translation unit.
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class IndexAction : public WrapperFrontendAction {
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public:
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IndexAction(std::shared_ptr<SymbolCollector> C,
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std::unique_ptr<CanonicalIncludes> Includes,
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const index::IndexingOptions &Opts,
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std::function<void(SymbolSlab)> &SymbolsCallback)
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: WrapperFrontendAction(index::createIndexingAction(C, Opts, nullptr)),
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SymbolsCallback(SymbolsCallback), Collector(C),
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Includes(std::move(Includes)),
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PragmaHandler(collectIWYUHeaderMaps(this->Includes.get())) {}
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std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
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StringRef InFile) override {
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CI.getPreprocessor().addCommentHandler(PragmaHandler.get());
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return WrapperFrontendAction::CreateASTConsumer(CI, InFile);
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}
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bool BeginInvocation(CompilerInstance &CI) override {
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// We want all comments, not just the doxygen ones.
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CI.getLangOpts().CommentOpts.ParseAllComments = true;
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return WrapperFrontendAction::BeginInvocation(CI);
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}
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void EndSourceFileAction() override {
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WrapperFrontendAction::EndSourceFileAction();
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const auto &CI = getCompilerInstance();
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if (CI.hasDiagnostics() &&
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CI.getDiagnostics().hasUncompilableErrorOccurred()) {
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llvm::errs() << "Skipping TU due to uncompilable errors\n";
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return;
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}
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SymbolsCallback(Collector->takeSymbols());
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}
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private:
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std::function<void(SymbolSlab)> SymbolsCallback;
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std::shared_ptr<SymbolCollector> Collector;
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std::unique_ptr<CanonicalIncludes> Includes;
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std::unique_ptr<CommentHandler> PragmaHandler;
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};
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} // namespace
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std::unique_ptr<FrontendAction>
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createStaticIndexingAction(SymbolCollector::Options Opts,
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std::function<void(SymbolSlab)> SymbolsCallback) {
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index::IndexingOptions IndexOpts;
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IndexOpts.SystemSymbolFilter =
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index::IndexingOptions::SystemSymbolFilterKind::All;
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Opts.CollectIncludePath = true;
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Opts.CountReferences = true;
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Opts.Origin = SymbolOrigin::Static;
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auto Includes = llvm::make_unique<CanonicalIncludes>();
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addSystemHeadersMapping(Includes.get());
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Opts.Includes = Includes.get();
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return llvm::make_unique<IndexAction>(
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std::make_shared<SymbolCollector>(std::move(Opts)), std::move(Includes),
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IndexOpts, SymbolsCallback);
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};
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} // namespace clangd
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} // namespace clang
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