/*
* 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.util.AbstractList;
import mf.org.apache.xerces.xs.ShortList;
import mf.org.apache.xerces.xs.XSException;
/**
* Contains a list of shorts.
*
* @xerces.internal
*
* @author Sandy Gao, IBM
*
* @version $Id: ShortListImpl.java 725840 2008-12-11 22:19:06Z mrglavas $
*/
public final class ShortListImpl extends AbstractList implements ShortList {
/**
* An immutable empty list.
*/
public static final ShortListImpl EMPTY_LIST = new ShortListImpl(new short[0], 0);
// The array to hold all data
private final short[] fArray;
// Number of elements in this list
private final int fLength;
/**
* Construct an XSObjectList implementation
*
* @param array the data array
* @param length the number of elements
*/
public ShortListImpl(short[] array, int length) {
fArray = array;
fLength = length;
}
/**
* The number of <code>Objects</code> in the list. The range of valid
* child node indices is 0 to <code>length-1</code> inclusive.
*/
public int getLength() {
return fLength;
}
/**
* Checks if the <code>unsigned short</code> <code>item</code> is a
* member of this list.
* @param item <code>unsigned short</code> whose presence in this list
* is to be tested.
* @return True if this list contains the <code>unsigned short</code>
* <code>item</code>.
*/
public boolean contains(short item) {
for (int i = 0; i < fLength; i++) {
if (fArray[i] == item) {
return true;
}
}
return false;
}
public short item(int index) throws XSException {
if (index < 0 || index >= fLength) {
throw new XSException(XSException.INDEX_SIZE_ERR, null);
}
return fArray[index];
}
public boolean equals(Object obj) {
if (obj == null || !(obj instanceof ShortList)) {
return false;
}
ShortList rhs = (ShortList)obj;
if (fLength != rhs.getLength()) {
return false;
}
for (int i = 0;i < fLength; ++i) {
if (fArray[i] != rhs.item(i)) {
return false;
}
}
return true;
}
/*
* List methods
*/
public Object get(int index) {
if (index >= 0 && index < fLength) {
return new Short(fArray[index]);
}
throw new IndexOutOfBoundsException("Index: " + index);
}
public int size() {
return getLength();
}
} // class ShortListImpl