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 mf.org.apache.xerces.impl.xs.util;
  
  import java.lang.reflect.Array;
  import java.util.AbstractList;
  
  import mf.org.apache.xerces.xs.datatypes.ObjectList;
  
  /**
   * Contains a list of Objects.
   *
   * @version $Id: ObjectListImpl.java 789785 2009-06-30 15:10:26Z knoaman $
   * @xerces.internal
   */
  public final class ObjectListImpl extends AbstractList implements ObjectList {
  
      /**
       * An immutable empty list.
       */
      public static final ObjectListImpl EMPTY_LIST = new ObjectListImpl(new Object[0], 0);
  
      // The array to hold all data
      private final Object[] fArray;
  
      // Number of elements in this list
      private final int fLength;
  
      public ObjectListImpl(Object[] array, int length) {
          fArray = array;
          fLength = length;
      }
  
      @Override
      public int getLength() {
          return fLength;
      }
  
      @Override
      public boolean contains(Object item) {
          if (item == null) {
              for (int i = 0; i < fLength; i++) {
                  if (fArray[i] == null)
                      return true;
              }
          } else {
              for (int i = 0; i < fLength; i++) {
                  if (item.equals(fArray[i]))
                      return true;
              }
          }
          return false;
      }
  
      @Override
      public Object item(int index) {
          if (index < 0 || index >= fLength) {
              return null;
          }
          return fArray[index];
      }
  
      /*
       * List methods
       */
      @Override
      public Object get(int index) {
          if (index >= 0 && index < fLength) {
              return fArray[index];
          }
          throw new IndexOutOfBoundsException("Index: " + index);
      }
  
      @Override
      public int size() {
          return getLength();
      }
  
      @Override
      public Object[] toArray() {
          Object[] a = new Object[fLength];
          toArray0(a);
          return a;
      }
  
      @Override
      public Object[] toArray(Object[] a) {
          if (a.length < fLength) {
              Class arrayClass = a.getClass();
              Class componentType = arrayClass.getComponentType();
              a = (Object[]) Array.newInstance(componentType, fLength);
          }
          toArray0(a);
          if (a.length > fLength) {
              a[fLength] = null;
          }
          return a;
      }
  
      private void toArray0(Object[] a) {
          if (fLength > 0) {
              System.arraycopy(fArray, 0, a, 0, fLength);
          }
      }
  }
  