AbstractAnnotationValueVisitor9.java revision 3189:70ac078df098 
1/*
2 * Copyright (c) 2011, 2014, 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
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24 */
25
26package javax.lang.model.util;
27
28import static javax.lang.model.SourceVersion.*;
29import javax.lang.model.SourceVersion;
30import javax.annotation.processing.SupportedSourceVersion;
31
32/**
33 * A skeletal visitor for annotation values with default behavior
34 * appropriate for the {@link SourceVersion#RELEASE_9 RELEASE_9}
35 * source version.
36 *
37 * <p> <b>WARNING:</b> The {@code AnnotationValueVisitor} interface
38 * implemented by this class may have methods added to it in the
39 * future to accommodate new, currently unknown, language structures
40 * added to future versions of the Java&trade; programming language.
41 * Therefore, methods whose names begin with {@code "visit"} may be
42 * added to this class in the future; to avoid incompatibilities,
43 * classes which extend this class should not declare any instance
44 * methods with names beginning with {@code "visit"}.
45 *
46 * <p>When such a new visit method is added, the default
47 * implementation in this class will be to call the {@link
48 * #visitUnknown visitUnknown} method.  A new abstract annotation
49 * value visitor class will also be introduced to correspond to the
50 * new language level; this visitor will have different default
51 * behavior for the visit method in question.  When the new visitor is
52 * introduced, all or portions of this visitor may be deprecated.
53 *
54 * @param <R> the return type of this visitor's methods
55 * @param <P> the type of the additional parameter to this visitor's methods.
56 *
57 * @see AbstractAnnotationValueVisitor6
58 * @see AbstractAnnotationValueVisitor7
59 * @see AbstractAnnotationValueVisitor8
60 * @since 9
61 */
62@SupportedSourceVersion(RELEASE_9)
63public abstract class AbstractAnnotationValueVisitor9<R, P> extends AbstractAnnotationValueVisitor8<R, P> {
64
65    /**
66     * Constructor for concrete subclasses to call.
67     */
68    protected AbstractAnnotationValueVisitor9() {
69        super();
70    }
71}
72