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.calcite.util;
  
  import com.google.common.primitives.Ints;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  
  /**
   * Extension to {@link ArrayList} to help build an array of <code>int</code>
   * values.
   */
  @Deprecated // to be removed before 2.0
  public class IntList extends ArrayList<Integer> {
    //~ Methods ----------------------------------------------------------------
  
    public int[] toIntArray() {
      return Ints.toArray(this);
    }
  
    /**
     * Converts a list of {@link Integer} objects to an array of primitive
     * <code>int</code>s.
     *
     * @param integers List of Integer objects
     * @return Array of primitive <code>int</code>s
     *
     * @deprecated Use {@link Ints#toArray(java.util.Collection)}
     */
    @Deprecated // to be removed before 2.0
    public static int[] toArray(List<Integer> integers) {
      return Ints.toArray(integers);
    }
  
    /**
     * Returns a list backed by an array of primitive <code>int</code> values.
     *
     * <p>The behavior is analogous to {@link Arrays#asList(Object[])}. Changes
     * to the list are reflected in the array. The list cannot be extended.
     *
     * @param args Array of primitive <code>int</code> values
     * @return List backed by array
     */
    @Deprecated // to be removed before 2.0
    public static List<Integer> asList(final int[] args) {
      return Ints.asList(args);
    }
  
    public ImmutableIntList asImmutable() {
      return ImmutableIntList.copyOf(this);
    }
  }
  