       1 /*
       2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
       3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       4  *
       5  * This code is free software; you can redistribute it and/or modify it
       6  * under the terms of the GNU General Public License version 2 only, as
       7  * published by the Free Software Foundation.  Oracle designates this
       8  * particular file as subject to the "Classpath" exception as provided
       9  * by Oracle in the LICENSE file that accompanied this code.
      10  *
      11  * This code is distributed in the hope that it will be useful, but WITHOUT
      12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14  * version 2 for more details (a copy is included in the LICENSE file that
      15  * accompanied this code).
      16  *
      17  * You should have received a copy of the GNU General Public License version
      18  * 2 along with this work; if not, write to the Free Software Foundation,
      19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
      20  *
      21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
      22  * or visit www.oracle.com if you need additional information or have any
      23  * questions.
      24  */
      25
      26 package jdk.nashorn.api.tree;
      27
      28
      29 /**
      30  * Indicates that an unknown kind of Tree was encountered.  This
      31  * can occur if the language evolves and new kinds of Trees are
      32  * added to the {@code Tree} hierarchy.  May be thrown by a
      33  * {@linkplain TreeVisitor tree visitor} to indicate that the
      34  * visitor was created for a prior version of the language.
      35  *
      36  * @deprecated Nashorn JavaScript script engine and APIs, and the jjs tool
      37  * are deprecated with the intent to remove them in a future release.
      38  *
      39  * @since 9
      40  */
      41 @Deprecated(since="11", forRemoval=true)
      42 public class UnknownTreeException extends RuntimeException {
      43
      44     private static final long serialVersionUID = 1L;
      45
      46     private transient final Tree tree;
      47     private transient final Object parameter;
      48
      49     /**
      50      * Creates a new {@code UnknownTreeException}.  The {@code p}
      51      * parameter may be used to pass in an additional argument with
      52      * information about the context in which the unknown element was
      53      * encountered; for example, the visit methods of {@link
      54      * TreeVisitor} may pass in their additional parameter.
      55      *
      56      * @param t the unknown tree, may be {@code null}
      57      * @param p an additional parameter, may be {@code null}
      58      */
      59     public UnknownTreeException(final Tree t, final Object p) {
      60         super("Unknown tree: " + t);
      61         this.tree = t;
      62         this.parameter = p;
      63     }
      64
      65     /**
      66      * Returns the unknown tree.
      67      * The value may be unavailable if this exception has been
      68      * serialized and then read back in.
      69      *
      70      * @return the unknown element, or {@code null} if unavailable
      71      */
      72     public Tree getUnknownTree() {
      73         return tree;
      74     }
      75
      76     /**
      77      * Returns the additional argument.
      78      * The value may be unavailable if this exception has been
      79      * serialized and then read back in.
      80      *
      81      * @return the additional argument
      82      */
      83     public Object getArgument() {
      84         return parameter;
      85     }
      86 }
    --- EOF ---