/*
 * @(#)$Id: CompAttributeState.java,v 1.2 2001/10/18 23:52:14 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.trex.ng.comp;

import com.sun.msv.grammar.Expression;
import com.sun.msv.grammar.AttributeExp;
//import com.sun.msv.grammar.SimpleNameClass;
import com.sun.msv.reader.trex.ng.AttributeState;

/**
 * parses <attribute> pattern.
 * 
 * @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
 */
public class CompAttributeState extends AttributeState {
	protected Expression annealExpression( Expression contentModel ) {
		
		final Expression exp = super.annealExpression(contentModel);
		
		String defaultValue = startTag.getAttribute(
			RELAXNGCompReader.AnnotationNamespace, "defaultValue" );
		if(defaultValue!=null && (exp instanceof AttributeExp)) {
//			if(!nameClass instanceof SimpleNameClass)
//				// attribute with a:defaultValue must be a simple name.
//				reader.reportError(
//					RELAXNGCompReader.ERR_NAME_IS_NOT_SIMPLE_FOR_DEFAULTEDATTRIBUTE );
//		
			// remember that a default value is specified for this attribute.
			// Since AttributeExps are not unified, it is safe to use it as a key.
			// all checks are performed later.
			RELAXNGCompReader reader = (RELAXNGCompReader)this.reader;
			reader.addDefaultValue((AttributeExp)exp,defaultValue);
		}
				
		return exp;
	}
}