src/org/apache/xalan/xsltc/dom/ArrayNodeListIterator.java

/*
 * 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.
 */
/*
 * $Id$
 */

package org.apache.xalan.xsltc.dom;

import org.apache.xml.dtm.DTMAxisIterator;

public class ArrayNodeListIterator implements DTMAxisIterator  {

    private int _pos = 0;

    private int _mark = 0;

    private int _nodes[];

    private static final int[] EMPTY = { };

    public ArrayNodeListIterator(int[] nodes) {
	_nodes = nodes;
    }

    public int next() {
	return _pos < _nodes.length ? _nodes[_pos++] : END;
    }

    public DTMAxisIterator reset() {
	_pos = 0;
	return this;
    }

    public int getLast() {
	return _nodes.length;
    }

    public int getPosition() {
	return _pos;
    }

    public void setMark() {
	_mark = _pos;
    }

    public void gotoMark() {
	_pos = _mark;
    }

    public DTMAxisIterator setStartNode(int node) {
	if (node == END) _nodes = EMPTY;
	return this;
    }

    public int getStartNode() {
	return END;
    }

    public boolean isReverse() {
	return false;
    }

    public DTMAxisIterator cloneIterator() {
	return new ArrayNodeListIterator(_nodes);
    }

    public void setRestartable(boolean isRestartable) {
    }

    public int getNodeByPosition(int position) {
	return _nodes[position - 1];
    }

}