/*
 * Copyright (c) 2008, Heng Yuan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Heng Yuan nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Heng Yuan ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL Heng Yuan BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.yuanheng.cookcc.input.xml;

import org.yuanheng.cookcc.doc.GrammarDoc;
import org.yuanheng.cookcc.doc.ParserDoc;
import org.yuanheng.cookcc.doc.RhsDoc;

import cookxml.core.interfaces.NoAdd;

/**
 * @author Heng Yuan
 * @version $Id: GrammarHelper.java 297 2008-10-21 23:56:08Z superduperhengyuan $
 */
public class GrammarHelper implements NoAdd
{
	private final ParserDoc m_parser;
	private GrammarDoc m_grammar;

	public GrammarHelper (ParserDoc lexer)
	{
		m_parser = lexer;
	}

	public void setRule (String rule)
	{
		m_grammar = m_parser.getGrammar (rule);
	}

	public void add (RhsDoc rhs)
	{
		m_grammar.addRhs (rhs);
	}

	public GrammarDoc getGrammar ()
	{
		return m_grammar;
	}
}