/*
 * @(#)$Id: HedgeRuleState.java,v 1.2 2001/05/01 18:13:08 Bear Exp $
 *
 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the proprietary information of Sun Microsystems, Inc.  
 * Use is subject to license terms.
 * 
 */
package com.sun.msv.reader.relax.core;

import com.sun.msv.grammar.Expression;
import com.sun.msv.grammar.relax.HedgeRules;
import com.sun.msv.reader.relax.HedgeRuleBaseState;

/**
 * parses <hedgeRule> element
 * 
 * this class is used as the base class of TopLevelState
 * 
 * @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
 */
public class HedgeRuleState extends HedgeRuleBaseState
{
	protected void endSelf( Expression contentModel )
	{
		final String label = startTag.getAttribute("label");
		if( label==null )
		{
			reader.reportError( reader.ERR_MISSING_ATTRIBUTE, "hedgeRule", "label" );
			return;	// recover by ignoring this hedgeRule
		}
		
		final RELAXCoreReader reader = (RELAXCoreReader)this.reader;
		
		HedgeRules hr = reader.module.hedgeRules.getOrCreate(label);
		reader.setDeclaredLocationOf(hr); // remember where this hedgeRule is defined.
		hr.addHedge(contentModel,reader.pool);
	}
}