/* *******************************************************************
 * 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 Eclipse Public License v 2.0
 * which accompanies this distribution and is available at
 * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
 *
 * Contributors:
 *     PARC     initial implementation
 * ******************************************************************/

package answers;

import support.Log;

import figures.*;

aspect Answer3e {

    private 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;
        }
    }
}