content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.cassandra.simulator;
  
  import java.util.AbstractCollection;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Iterator;
  import java.util.function.Consumer;
  import java.util.function.Function;
  import java.util.function.Predicate;
  import java.util.stream.Collectors;
  import java.util.stream.Stream;
  
  import com.google.common.collect.Iterators;
  
  import org.apache.cassandra.simulator.OrderOn.StrictSequential;
  import org.apache.cassandra.utils.Throwables;
  
  import static java.util.Arrays.copyOf;
  
  public class ActionList extends AbstractCollection<Action>
  {
      private static final ActionList EMPTY = new ActionList(new Action[0]);
      public static ActionList empty() { return EMPTY; }
      public static ActionList of(Action action) { return new ActionList(new Action[] { action }); }
      public static ActionList of(Stream<Action> action) { return new ActionList(action.toArray(Action[]::new)); }
      public static ActionList of(Stream<Action> action, Stream<Action>... actions)
      {
          return new ActionList(Stream.concat(action, Stream.of(actions).flatMap(a -> a)).toArray(Action[]::new));
      }
      public static ActionList of(Collection<Action> actions) { return actions.isEmpty() ? EMPTY : new ActionList(actions.toArray(new Action[0])); }
      public static ActionList of(Action ... actions) { return new ActionList(actions); }
  
      private final Action[] actions;
  
      ActionList(Action[] actions)
      {
          this.actions = actions;
      }
  
      public int size()
      {
          return actions.length;
      }
  
      public boolean isEmpty()
      {
          return 0 == actions.length;
      }
  
      public Action get(int i)
      {
          return actions[i];
      }
  
      public Action asAction(Action.Modifiers self, Action.Modifiers children, String description)
      {
          return Actions.of(self, children, description, () -> this);
      }
  
      public Iterator<Action> iterator()
      {
          return Iterators.forArray(actions);
      }
  
      public Stream<Action> stream()
      {
          return Stream.of(actions);
      }
  
      public ActionList transform(Function<Action, Action> apply)
      {
          return ActionList.of(stream().map(apply));
      }
  
      public ActionList filter(Predicate<Action> apply)
      {
          return ActionList.of(stream().filter(apply));
      }
  
      public boolean anyMatch(Predicate<Action> test)
      {
          for (int i = 0 ; i < actions.length ; ++i)
              if (test.test(actions[i])) return true;
          return false;
      }
  
      public ActionList andThen(Action andThen)
      {
          return andThen(ActionList.of(andThen));
      }
  
      public ActionList andThen(ActionList andThen)
      {
          Action[] result = copyOf(actions, size() + andThen.size());
          System.arraycopy(andThen.actions, 0, result, size(), andThen.size());
          return new ActionList(result);
      }
  
      public ActionList setStrictlySequential()
      {
          return setStrictlySequentialOn(this);
      }
  
      public ActionList setStrictlySequentialOn(Object on)
      {
          if (isEmpty()) return this;
          StrictSequential orderOn = new StrictSequential(on);
          forEach(a -> a.orderOn(orderOn));
          return this;
      }
  
      public ActionList orderOn(OrderOn orderOn)
      {
          if (isEmpty()) return this;
          forEach(a -> a.orderOn(orderOn));
          return this;
      }
  
      public Throwable safeForEach(Consumer<Action> forEach)
      {
          Throwable result = null;
          for (Action action : actions)
          {
              try
              {
                  forEach.accept(action);
              }
              catch (Throwable t)
              {
                  result = Throwables.merge(result, t);
              }
          }
          return result;
      }
  
      public String toString()
      {
          return Arrays.toString(actions);
      }
  
      public String toReconcileString()
      {
          return Arrays.stream(actions).map(Action::toReconcileString).collect(Collectors.joining(",", "[", "]"));
      }
  }
  
  