1 /*
2 * Copyright 2005-2006 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package javax.lang.model.type;
27
28 /**
29 * Indicates that an unknown kind of type was encountered. This can
30 * occur if the language evolves and new kinds of types are added to
31 * the {@code TypeMirror} hierarchy. May be thrown by a {@linkplain
32 * TypeVisitor type visitor} to indicate that the visitor was created
33 * for a prior version of the language.
34 *
35 * @author Joseph D. Darcy
36 * @author Scott Seligman
37 * @author Peter von der Ahé
38 * @see TypeVisitor#visitUnknown
39 * @since 1.6
40 */
41 public class UnknownTypeException extends RuntimeException {
42
43 private static final long serialVersionUID = 269L;
44
45 private transient TypeMirror type;
46 private transient Object parameter;
47
48 /**
49 * Creates a new {@code UnknownTypeException}.The {@code p}
50 * parameter may be used to pass in an additional argument with
51 * information about the context in which the unknown type was
52 * encountered; for example, the visit methods of {@link
53 * TypeVisitor} may pass in their additional parameter.
54 *
55 * @param t the unknown type, may be {@code null}
56 * @param p an additional parameter, may be {@code null}
57 */
58 public UnknownTypeException(TypeMirror t, Object p) {
59 super("Unknown type: " + t);
60 type = t;
61 this.parameter = p;
62 }
63
64 /**
65 * Returns the unknown type.
66 * The value may be unavailable if this exception has been
67 * serialized and then read back in.
68 *
69 * @return the unknown type, or {@code null} if unavailable
70 */
71 public TypeMirror getUnknownType() {
72 return type;
73 }
74
75 /**
76 * Returns the additional argument.
77 *
78 * @return the additional argument
79 */
80 public Object getArgument() {
81 return parameter;
82 }
83 }
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