/* *******************************************************************
 * Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
 * All rights reserved.
 * This program and the accompanying materials are made available
 * under the terms of the Common Public License v1.0
 * which accompanies this distribution and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 *
 * Contributors:
 *     PARC     initial implementation
 * ******************************************************************/

package answers;

import support.Log;

import figures.*;

aspect Answer3e {

    Group Point.containingGroup = null;

    before(Group g, Point p): execution(void Group.add(FigureElement)) && this(g) && args(p) {
	if (p.containingGroup != null) {
	    throw new IllegalStateException(p.containingGroup.toString());
	} else {
	    p.containingGroup = g;
	}
    }
}
