/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2022, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.core.joran.sanity;
  
  import ch.qos.logback.core.model.Model;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Interface for sanity checking Models.
   * @since 1.3.2/1.4.2
   * @author ceki
   */
  public interface SanityChecker {
  
      public void check(Model model);
  
      default void deepFindAllModelsOfType(Class<? extends Model> modelClass, List<Model> modelList, Model model) {
          if (modelClass.isInstance(model)) {
              modelList.add(model);
          }
  
          for (Model m : model.getSubModels()) {
              deepFindAllModelsOfType(modelClass, modelList, m);
          }
      }
  
      default List<Pair<Model, Model>> deepFindNestedSubModelsOfType(Class<? extends Model> modelClass, List<? extends Model> parentList) {
  
          List<Pair<Model, Model>> nestingPairs = new ArrayList<>();
  
          for (Model parent : parentList) {
              List<Model> nestedElements = new ArrayList<>();
              parent.getSubModels().stream().forEach(m -> deepFindAllModelsOfType(modelClass, nestedElements, m));
              nestedElements.forEach(n -> nestingPairs.add(new Pair(parent, n)));
          }
          return nestingPairs;
      }
  }