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/*

 * 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,

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package com.sun.org.apache.xpath.internal.axes;

import com.sun.org.apache.xpath.internal.XPathContext;

/**

 * A class that implements this interface is a sub context node list, meaning it

 * is a node list for a location path step for a predicate.

 * @xsl.usage advanced

 */

public interface SubContextList

{

  /**

   * Get the number of nodes in the node list, which, in the XSLT 1 based

   * counting system, is the last index position.

   *

   *

   * @param xctxt The XPath runtime context.

   *

   * @return the number of nodes in the node list.

   */

  public int getLastPos(XPathContext xctxt);

  /**

   * Get the current sub-context position.

   *

   * @param xctxt The XPath runtime context.

   *

   * @return The position of the current node in the list.

   */

  public int getProximityPosition(XPathContext xctxt);

}