C++ CompilerInstance::getASTContext方法代码示例

bool WebCLValidatorAction::initialize(clang::CompilerInstance &instance)
{
    if (!WebCLAction::initialize(instance))
        return false;

    rewriter_ = new clang::Rewriter(
        instance.getSourceManager(), instance.getLangOpts());
    if (!rewriter_) {
        reporter_->fatal("Internal error. Can't create rewriter.\n");
        return false;
    }

    transformer_ = new WebCLTransformer(instance, *rewriter_);
    if (!transformer_) {
        reporter_->fatal("Internal error. Can't create AST transformer.\n");
        return false;
    }

    // Consumer must be allocated dynamically. The framework deletes
    // it.
    consumer_ = new WebCLConsumer(instance, *rewriter_, *transformer_);
    if (!consumer_) {
        reporter_->fatal("Internal error. Can't create AST consumer.\n");
        return false;
    }

    sema_ = new clang::Sema(
        instance.getPreprocessor(), instance.getASTContext(), *consumer_);
    if (!sema_) {
        reporter_->fatal("Internal error. Can't create semantic actions.\n");
        return false;
    }

    return true;
}

int TypeUtils::sizeOfPointer(const clang::CompilerInstance &ci, clang::QualType qt)
{
    if (!qt.getTypePtrOrNull())
        return -1;
    // HACK: What's a better way of getting the size of a pointer ?
    auto &astContext = ci.getASTContext();
    return astContext.getTypeSize(astContext.getPointerType(qt));
}

std::unique_ptr<clang::ASTConsumer>
ClangTidyASTConsumerFactory::CreateASTConsumer(
    clang::CompilerInstance &Compiler, StringRef File) {
  // FIXME: Move this to a separate method, so that CreateASTConsumer doesn't
  // modify Compiler.
  Context.setSourceManager(&Compiler.getSourceManager());
  Context.setCurrentFile(File);
  Context.setASTContext(&Compiler.getASTContext());

  std::vector<std::unique_ptr<ClangTidyCheck>> Checks;
  CheckFactories->createChecks(&Context, Checks);

  ast_matchers::MatchFinder::MatchFinderOptions FinderOptions;
  if (auto *P = Context.getCheckProfileData())
    FinderOptions.CheckProfiling.emplace(P->Records);

  std::unique_ptr<ast_matchers::MatchFinder> Finder(
      new ast_matchers::MatchFinder(std::move(FinderOptions)));

  for (auto &Check : Checks) {
    Check->registerMatchers(&*Finder);
    Check->registerPPCallbacks(Compiler);
  }

  std::vector<std::unique_ptr<ASTConsumer>> Consumers;
  if (!Checks.empty())
    Consumers.push_back(Finder->newASTConsumer());

  AnalyzerOptionsRef AnalyzerOptions = Compiler.getAnalyzerOpts();
  // FIXME: Remove this option once clang's cfg-temporary-dtors option defaults
  // to true.
  AnalyzerOptions->Config["cfg-temporary-dtors"] =
      Context.getOptions().AnalyzeTemporaryDtors ? "true" : "false";

  GlobList &Filter = Context.getChecksFilter();
  AnalyzerOptions->CheckersControlList = getCheckersControlList(Filter);
  if (!AnalyzerOptions->CheckersControlList.empty()) {
    setStaticAnalyzerCheckerOpts(Context.getOptions(), AnalyzerOptions);
    AnalyzerOptions->AnalysisStoreOpt = RegionStoreModel;
    AnalyzerOptions->AnalysisDiagOpt = PD_NONE;
    AnalyzerOptions->AnalyzeNestedBlocks = true;
    AnalyzerOptions->eagerlyAssumeBinOpBifurcation = true;
    std::unique_ptr<ento::AnalysisASTConsumer> AnalysisConsumer =
        ento::CreateAnalysisConsumer(Compiler);
    AnalysisConsumer->AddDiagnosticConsumer(
        new AnalyzerDiagnosticConsumer(Context));
    Consumers.push_back(std::move(AnalysisConsumer));
  }
  return llvm::make_unique<ClangTidyASTConsumer>(
      std::move(Consumers), std::move(Finder), std::move(Checks));
}

	bool parseAST(const char* szSourceCodeFilePath, clang::ast_matchers::MatchFinder finder)
	{
		// create the compiler instance setup for this file as main file
		prepareCompilerforFile(szSourceCodeFilePath);

		std::unique_ptr<clang::ASTConsumer> pAstConsumer (finder.newASTConsumer());
		
		clang::DiagnosticConsumer& diagConsumer = m_CompilerInstance.getDiagnosticClient();
		diagConsumer.BeginSourceFile(m_CompilerInstance.getLangOpts(), &m_CompilerInstance.getPreprocessor());
		clang::ParseAST(m_CompilerInstance.getPreprocessor(), pAstConsumer.get(), m_CompilerInstance.getASTContext());
		diagConsumer.EndSourceFile();

		return diagConsumer.getNumErrors() != 0;
	}

 virtual std::unique_ptr<clang::ASTConsumer> CreateASTConsumer(
     clang::CompilerInstance &Compiler, llvm::StringRef InFile)
 {
    return std::unique_ptr<clang::ASTConsumer>(
        new FindNamedClassConsumer(&Compiler.getASTContext()));
 }

	virtual std::unique_ptr<clang::ASTConsumer> CreateASTConsumer(
		clang::CompilerInstance &Compiler, llvm::StringRef InFile) 
	{
		return std::unique_ptr<clang::ASTConsumer>(new fxc::Driver(Compiler.getASTContext(), Compiler.getDiagnostics()));
	}

 std::unique_ptr< clang::ASTConsumer > CreateASTConsumer(clang::CompilerInstance & compiler, llvm::StringRef inFile )
 {
   return std::unique_ptr< clang::ASTConsumer >( new MetricsCalculatorASTConsumer( &compiler.getASTContext() ) );
 }

bool QtUtils::isTooBigForQList(clang::QualType qt, const clang::CompilerInstance &ci)
{
    return (int)ci.getASTContext().getTypeSize(qt) <= TypeUtils::sizeOfPointer(ci, qt);
}

	clang::ASTContext& GetASTContext() { return m_CompilerInstance.getASTContext(); }