/*

 * 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.  Sun designates this

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

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

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 */

package javax.lang.model.element;

/**

 * Indicates that an unknown kind of annotation value was encountered.

 * This can occur if the language evolves and new kinds of annotation

 * values can be stored in an annotation.  May be thrown by an

 * {@linkplain AnnotationValueVisitor annotation value visitor} to

 * indicate that the visitor was created for a prior version of the

 * language.

 *

 * @author Joseph D. Darcy

 * @author Scott Seligman

 * @author Peter von der Ahé

 * @see AnnotationValueVisitor#visitUnknown

 * @since 1.6

 */

    private static final long serialVersionUID = 269L;

    private transient AnnotationValue av;

    private transient Object parameter;

    /**

     * Creates a new {@code UnknownAnnotationValueException}.  The

     * {@code p} parameter may be used to pass in an additional

     * argument with information about the context in which the

     * unknown annotation value was encountered; for example, the

     * visit methods of {@link AnnotationValueVisitor} may pass in

     * their additional parameter.

     *

     * @param av the unknown annotation value, may be {@code null}

     * @param p an additional parameter, may be {@code null}

     */

    public UnknownAnnotationValueException(AnnotationValue av, Object p) {

        super("Unknown annotation value: " + av);

        this.av = av;

        this.parameter = p;

    }

    /**

     * Returns the unknown annotation value.

     * The value may be unavailable if this exception has been

     * serialized and then read back in.

     *

     * @return the unknown element, or {@code null} if unavailable

     */

    public AnnotationValue getUnknownAnnotationValue() {

        return av;

    }

    /**

     * Returns the additional argument.

     *

     * @return the additional argument

     */

    public Object getArgument() {

        return parameter;

    }

}