86 lines
3.0 KiB
Java
86 lines
3.0 KiB
Java
/*
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* Copyright (c) 2005, 2009, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.lang.model.element;
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import javax.lang.model.UnknownEntityException;
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/**
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* Indicates that an unknown kind of element was encountered. This
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* can occur if the language evolves and new kinds of elements are
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* added to the {@code Element} hierarchy. May be thrown by an
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* {@linkplain ElementVisitor element visitor} to indicate that the
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* visitor was created for a prior version of the language.
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*
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* @author Joseph D. Darcy
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* @author Scott Seligman
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* @author Peter von der Ahé
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* @see ElementVisitor#visitUnknown
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* @since 1.6
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*/
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public class UnknownElementException extends UnknownEntityException {
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private static final long serialVersionUID = 269L;
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private transient Element element;
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private transient Object parameter;
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/**
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* Creates a new {@code UnknownElementException}. The {@code p}
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* parameter may be used to pass in an additional argument with
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* information about the context in which the unknown element was
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* encountered; for example, the visit methods of {@link
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* ElementVisitor} may pass in their additional parameter.
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*
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* @param e the unknown element, may be {@code null}
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* @param p an additional parameter, may be {@code null}
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*/
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public UnknownElementException(Element e, Object p) {
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super("Unknown element: " + e);
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element = e;
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this.parameter = p;
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}
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/**
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* Returns the unknown element.
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* The value may be unavailable if this exception has been
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* serialized and then read back in.
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*
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* @return the unknown element, or {@code null} if unavailable
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*/
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public Element getUnknownElement() {
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return element;
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}
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/**
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* Returns the additional argument.
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*
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* @return the additional argument
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*/
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public Object getArgument() {
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return parameter;
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}
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}
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