clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp

//===--- tools/extra/clang-tidy/ClangTidyMain.cpp - Clang tidy tool -------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
///  \file This file implements a clang-tidy tool.
///
///  This tool uses the Clang Tooling infrastructure, see
///    http://clang.llvm.org/docs/HowToSetupToolingForLLVM.html
///  for details on setting it up with LLVM source tree.
///
//===----------------------------------------------------------------------===//

#include "../ClangTidy.h"
#include "clang/Tooling/CommonOptionsParser.h"

using namespace clang::ast_matchers;
using namespace clang::driver;
using namespace clang::tooling;
using namespace llvm;

static cl::OptionCategory ClangTidyCategory("clang-tidy options");

static cl::extrahelp CommonHelp(CommonOptionsParser::HelpMessage);

static cl::opt<std::string> Checks(
    "checks",
    cl::desc("Regular expression matching the names of the checks to be run."),
    cl::init(".*"), cl::cat(ClangTidyCategory));
static cl::opt<std::string> DisableChecks(
    "disable-checks",
    cl::desc("Regular expression matching the names of the checks to disable."),
    cl::init("(clang-analyzer-alpha.*" // Too many false positives.
             "|llvm-include-order"     // Not implemented yet.
             "|llvm-namespace-comment" // Not complete.
             "|google-.*)"),           // Doesn't apply to LLVM.
    cl::cat(ClangTidyCategory));
static cl::opt<bool> Fix("fix", cl::desc("Fix detected errors if possible."),
                         cl::init(false), cl::cat(ClangTidyCategory));

static cl::opt<bool> ListChecks("list-checks",
                                cl::desc("List all enabled checks and exit."),
                                cl::init(false), cl::cat(ClangTidyCategory));

int main(int argc, const char **argv) {
  CommonOptionsParser OptionsParser(argc, argv, ClangTidyCategory);

  clang::tidy::ClangTidyOptions Options;
  Options.EnableChecksRegex = Checks;
  Options.DisableChecksRegex = DisableChecks;

  // FIXME: Allow using --list-checks without positional arguments.
  if (ListChecks) {
    llvm::outs() << "Enabled checks:";
    for (auto CheckName : clang::tidy::getCheckNames(Options))
      llvm::outs() << "\n    " << CheckName;
    llvm::outs() << "\n\n";
    return 0;
  }

  SmallVector<clang::tidy::ClangTidyError, 16> Errors;
  clang::tidy::runClangTidy(Options, OptionsParser.getCompilations(),
                            OptionsParser.getSourcePathList(), &Errors);
  clang::tidy::handleErrors(Errors, Fix);

  return 0;
}

namespace clang {
namespace tidy {

// This anchor is used to force the linker to link the LLVMModule.
extern volatile int LLVMModuleAnchorSource;
static int LLVMModuleAnchorDestination = LLVMModuleAnchorSource;

// This anchor is used to force the linker to link the GoogleModule.
extern volatile int GoogleModuleAnchorSource;
static int GoogleModuleAnchorDestination = GoogleModuleAnchorSource;

// This anchor is used to force the linker to link the MiscModule.
extern volatile int MiscModuleAnchorSource;
static int MiscModuleAnchorDestination = MiscModuleAnchorSource;

} // namespace tidy
} // namespace clang