/*
 * @(#)$Id: InlineTagState.java,v 1.2 2001/05/01 18:13:09 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.TagClause;
import com.sun.msv.grammar.SimpleNameClass;

/**
 * parses <tag> element inlined in <elementRule>
 * 
 * @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
 */
public class InlineTagState extends ClauseState
{
	protected void endSelf()
	{
		super.endSelf();
		
		String name = startTag.getAttribute("name");
		
		if(name==null)
		{// then it defaults to the label of parent state
			
			name = parentState.getStartTag().getAttribute("label");
			if(name==null)	// label attribute of the parent itself defaults to role attribute.
				name = parentState.getStartTag().getAttribute("role");
			
			if(name==null)
				// this is an error of elementRule.
				// so user will receive an error by ElementRuleBaseState.
				// silently ignore this error here.
				name = "<undefined>";
		}
		
		
		if(!(parentState instanceof ElementRuleBaseState ))
			// inline element must be used as a child of elementRule
			throw new Error();	// assertion failed.
		
		TagClause c = new TagClause();
		
		c.nameClass = new SimpleNameClass(
			getReader().module.targetNamespace,
			name );
		c.exp = exp;	// exp holds a sequence of AttributeExp
		
		((ElementRuleBaseState)parentState).onEndInlineClause(c);
		
		return;
	}
}