/*

 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * This source code is provided to illustrate the usage of a given feature

 * or technique and has been deliberately simplified. Additional steps

 * required for a production-quality application, such as security checks,

 * input validation and proper error handling, might not be present in

 * this sample code.

 */

package com.sun.tools.example.debug.event;

import com.sun.jdi.*;

import com.sun.jdi.event.*;

public class ExceptionEventSet extends LocatableEventSet {

    private static final long serialVersionUID = 5328140167954640711L;

    ExceptionEventSet(EventSet jdiEventSet) {

        super(jdiEventSet);

    }

    /**

     * Gets the thrown exception object. The exception object is

     * an instance of java.lang.Throwable or a subclass in the

     * target VM.

     *

     * @return an {@link ObjectReference} which mirrors the thrown object in

     * the target VM.

     */

    public ObjectReference getException() {

        return ((ExceptionEvent)oneEvent).exception();

    }

    /**

     * Gets the location where the exception will be caught. An exception

     * is considered to be caught if, at the point of the throw, the

     * current location is dynamically enclosed in a try statement that

     * handles the exception. (See the JVM specification for details).

     * If there is such a try statement, the catch location is the

     * first code index of the appropriate catch clause.

     * <p>

     * If there are native methods in the call stack at the time of the

     * exception, there are important restrictions to note about the

     * returned catch location. In such cases,

     * it is not possible to predict whether an exception will be handled

     * by some native method on the call stack.

     * Thus, it is possible that exceptions considered uncaught

     * here will, in fact, be handled by a native method and not cause

     * termination of the target VM. Also, it cannot be assumed that the

     * catch location returned here will ever be reached by the throwing

     * thread. If there is

     * a native frame between the current location and the catch location,

     * the exception might be handled and cleared in that native method

     * instead.

     *

     * @return the {@link Location} where the exception will be caught or null if

     * the exception is uncaught.

     */

    public Location getCatchLocation() {

        return ((ExceptionEvent)oneEvent).catchLocation();

    }

    @Override

    public void notify(JDIListener listener) {

        listener.exception(this);

    }

}