code: ///////////////////////////////////////////////////////////////////////////////////////////////
  // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
  // Copyright (C) 2001-2023 the original author or authors.
  //
  // This library is free software; you can redistribute it and/or
  // modify it under the terms of the GNU Lesser General Public
  // License as published by the Free Software Foundation; either
  // version 2.1 of the License, or (at your option) any later version.
  //
  // This library 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
  // Lesser General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public
  // License along with this library; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  ///////////////////////////////////////////////////////////////////////////////////////////////
  
  package com.puppycrawl.tools.checkstyle.internal.testmodules;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import com.puppycrawl.tools.checkstyle.api.AuditListener;
  import com.puppycrawl.tools.checkstyle.api.CheckstyleException;
  import com.puppycrawl.tools.checkstyle.api.Configuration;
  import com.puppycrawl.tools.checkstyle.api.RootModule;
  
  public class TestRootModuleChecker implements RootModule {
  
      private static boolean processed;
      private static List<File> filesToCheck;
      private static Configuration config;
      private static boolean destroyed;
      private static String property;
  
      @Override
      public void configure(Configuration configuration) throws CheckstyleException {
          config = configuration;
          property = configuration.getProperty("property");
      }
  
      @Override
      public void destroy() {
          destroyed = true;
      }
  
      @Override
      public int process(List<File> files) {
          processed = true;
          filesToCheck = new ArrayList<>(files);
          return 0;
      }
  
      @Override
      public void addListener(AuditListener listener) {
          // not used
      }
  
      @Override
      public void setModuleClassLoader(ClassLoader moduleClassLoader) {
          // not used
      }
  
      public static boolean isProcessed() {
          return processed;
      }
  
      public static boolean isDestroyed() {
          return destroyed;
      }
  
      public static String getProperty() {
          return property;
      }
  
      public static void reset() {
          processed = false;
          destroyed = false;
          filesToCheck = null;
          config = null;
          property = null;
      }
  
      public static List<File> getFilesToCheck() {
          return Collections.unmodifiableList(filesToCheck);
      }
  
      public static Configuration getConfig() {
          return config;
      }
  
  }
  