Immutable byte list
/*
* 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.
*/
/**
*
* @xerces.internal
*
* @author Ankit Pasricha, IBM
*
* @version $Id: ByteListImpl.java 446747 2006-09-15 21:46:20Z mrglavas $
*/
public class ByteListImpl {
// actually data stored in a byte array
protected final byte[] data;
// canonical representation of the data
protected String canonical;
public ByteListImpl(byte[] data) {
this.data = data;
}
/**
* The number of <code>byte</code>s in the list. The range of
* valid child object indices is 0 to <code>length-1</code> inclusive.
*/
public int getLength() {
return data.length;
}
/**
* Checks if the <code>byte</code> <code>item</code> is a
* member of this list.
* @param item <code>byte</code> whose presence in this list
* is to be tested.
* @return True if this list contains the <code>byte</code>
* <code>item</code>.
*/
public boolean contains(byte item) {
for (int i = 0; i < data.length; ++i) {
if (data[i] == item) {
return true;
}
}
return false;
}
/**
* Returns the <code>index</code>th item in the collection. The index
* starts at 0.
* @param index index into the collection.
* @return The <code>byte</code> at the <code>index</code>th
* position in the <code>ByteList</code>.
* @exception XSException
* INDEX_SIZE_ERR: if <code>index</code> is greater than or equal to the
* number of objects in the list.
*/
public byte item(int index)
throws Exception {
if(index < 0 || index > data.length - 1) {
throw new RuntimeException("INDEX SIZE ERR");
}
return data[index];
}
}
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