/*******************************************************************************
 * Copyright (c) 2008, 2009 Wind River Systems and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Wind River Systems - initial API and implementation
 *******************************************************************************/
package org.eclipse.debug.examples.core.pda.protocol;

/**
 * Unimplemented Instruction event generated when the PDA program encounters 
 * an instruction that it does not recognize.  This event is usually followed
 * by a VM Suspended event.
 * 
 * <pre>
 *    E: unimplemented instruction {label}
 * </pre>
 */
public class PDAUnimplementedInstructionEvent extends PDAEvent {
    
    public final String fOperation;
    
    public PDAUnimplementedInstructionEvent(String message) {
        super(message);
        fOperation = message.substring(getName(message).length() + 1);
    }
    
    public static boolean isEventMessage(String message) {
        return message.startsWith("unimplemented instruction");
    }
    
    protected String getName(String message) {
        if (isEventMessage(message)) {
            return "unimplemented instruction";
        }
        throw new IllegalArgumentException("Invalid event: " + message);
    }
}