src/org/apache/xpath/parser/RootOfRootPattern.java

/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2002-2003 The Apache Software Foundation.  All rights 
 * reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
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 * 2. Redistributions in binary form must reproduce the above copyright
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 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, Lotus
 * Development Corporation., http://www.lotus.com.  For more
 * information on the Apache Software Foundation, please see
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package org.apache.xpath.parser;

import java.util.Vector;

import org.apache.xpath.patterns.UnionPattern;

public class RootOfRootPattern extends RootOfRoot
{
  public RootOfRootPattern(XPath parser)
  {
	  super(parser);
  }

  public void jjtAddChild(Node n, int i) 
  {
    if(null == m_exprs)
    	m_exprs  = new Vector();
  	if(i >= m_exprs.size())
  	{
  		m_exprs.setSize(i+1);
  	}
  	if(n instanceof UnionPattern)
  	{
  		UnionPattern up = (UnionPattern)n;
  		if(1 == up.jjtGetNumChildren())
  		{
  			n = up.jjtGetChild(0);
  		}
  	}
    m_exprs.setElementAt(n, i);
  }

  public void jjtClose() 
  {
  	Node n = jjtGetChild(0);
  	if(n instanceof Pattern)
  	{
  		n.jjtSetParent(null);
  		m_exprs.setElementAt(n.jjtGetChild(0), 0);
  	}
  	super.jjtClose();
  }

}