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 }