/*
 * Leavitt - Source base todo manager for C family of languages
 *
 * Copyright (c) 2019-2022 Sameer Rahmani <lxsameer@gnu.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 2.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include <clang/Frontend/FrontendActions.h>
#include <clang/Tooling/CommonOptionsParser.h>
#include <clang/Tooling/Tooling.h>
#include <llvm/Support/CommandLine.h>

using namespace clang::tooling;

// Apply a custom category to all command-line options so that they are the
// only ones displayed.
static llvm::cl::OptionCategory LeavittCategory("Leavitt options");

// CommonOptionsParser declares HelpMessage with a description of the common
// command-line options related to the compilation database and input files.
// It's nice to have this help message in all tools.
static llvm::cl::extrahelp CommonHelp(CommonOptionsParser::HelpMessage);

// A help message for this specific tool can be added afterwards.
static llvm::cl::extrahelp MoreHelp("\nMore help text...\n");

int main(int argc, const char *argv[]) {
  auto ExpectedParser =
      CommonOptionsParser::create(argc, argv, LeavittCategory);
  if (!ExpectedParser) {
    // Fail gracefully for unsupported options.
    llvm::errs() << ExpectedParser.takeError();
    return 1;
  }

  CommonOptionsParser &OptionsParser = ExpectedParser.get();
  // Use OptionsParser.getCompilations() and OptionsParser.getSourcePathList()
  // to retrieve CompilationDatabase and the list of input file paths.
  ClangTool Tool(OptionsParser.getCompilations(),
                 OptionsParser.getSourcePathList());
  return Tool.run(newFrontendActionFactory<clang::SyntaxOnlyAction>().get());
}