src/java.xml/share/classes/com/sun/org/apache/xpath/internal/axes/SubContextList.java

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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
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 * 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);
}