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