Mercurial > jdk8-mips64-public > langtools / annotate
src/share/classes/javax/lang/model/util/SimpleTypeVisitor8.java@959103a6100f (annotated)
src/share/classes/javax/lang/model/util/SimpleTypeVisitor8.java
Wed, 27 Apr 2016 01:34:52 +0800
- author
- aoqi
- date
- Wed, 27 Apr 2016 01:34:52 +0800
- changeset 0
- 959103a6100f
- child 2525
- 2eb010b6cb22
- permissions
- -rw-r--r--
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
| aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
| aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
| aoqi@0 | 10 | * |
| aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 15 | * accompanied this code). |
| aoqi@0 | 16 | * |
| aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 20 | * |
| aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 23 | * questions. |
| aoqi@0 | 24 | */ |
| aoqi@0 | 25 | |
| aoqi@0 | 26 | package javax.lang.model.util; |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | import javax.annotation.processing.SupportedSourceVersion; |
| aoqi@0 | 29 | import javax.lang.model.SourceVersion; |
| aoqi@0 | 30 | import javax.lang.model.type.IntersectionType; |
| aoqi@0 | 31 | import static javax.lang.model.SourceVersion.*; |
| aoqi@0 | 32 | |
| aoqi@0 | 33 | /** |
| aoqi@0 | 34 | * A simple visitor of types with default behavior appropriate for the |
| aoqi@0 | 35 | * {@link SourceVersion#RELEASE_7 RELEASE_7} source version. |
| aoqi@0 | 36 | * |
| aoqi@0 | 37 | * Visit methods corresponding to {@code RELEASE_8} and earlier |
| aoqi@0 | 38 | * language constructs call {@link #defaultAction defaultAction}, |
| aoqi@0 | 39 | * passing their arguments to {@code defaultAction}'s corresponding |
| aoqi@0 | 40 | * parameters. |
| aoqi@0 | 41 | * |
| aoqi@0 | 42 | * <p> Methods in this class may be overridden subject to their |
| aoqi@0 | 43 | * general contract. Note that annotating methods in concrete |
| aoqi@0 | 44 | * subclasses with {@link java.lang.Override @Override} will help |
| aoqi@0 | 45 | * ensure that methods are overridden as intended. |
| aoqi@0 | 46 | * |
| aoqi@0 | 47 | * <p> <b>WARNING:</b> The {@code TypeVisitor} interface implemented |
| aoqi@0 | 48 | * by this class may have methods added to it in the future to |
| aoqi@0 | 49 | * accommodate new, currently unknown, language structures added to |
| aoqi@0 | 50 | * future versions of the Java™ programming language. |
| aoqi@0 | 51 | * Therefore, methods whose names begin with {@code "visit"} may be |
| aoqi@0 | 52 | * added to this class in the future; to avoid incompatibilities, |
| aoqi@0 | 53 | * classes which extend this class should not declare any instance |
| aoqi@0 | 54 | * methods with names beginning with {@code "visit"}. |
| aoqi@0 | 55 | * |
| aoqi@0 | 56 | * <p>When such a new visit method is added, the default |
| aoqi@0 | 57 | * implementation in this class will be to call the {@link |
| aoqi@0 | 58 | * #visitUnknown visitUnknown} method. A new simple type visitor |
| aoqi@0 | 59 | * class will also be introduced to correspond to the new language |
| aoqi@0 | 60 | * level; this visitor will have different default behavior for the |
| aoqi@0 | 61 | * visit method in question. When the new visitor is introduced, all |
| aoqi@0 | 62 | * or portions of this visitor may be deprecated. |
| aoqi@0 | 63 | * |
| aoqi@0 | 64 | * <p>Note that adding a default implementation of a new visit method |
| aoqi@0 | 65 | * in a visitor class will occur instead of adding a <em>default |
| aoqi@0 | 66 | * method</em> directly in the visitor interface since a Java SE 8 |
| aoqi@0 | 67 | * language feature cannot be used to this version of the API since |
| aoqi@0 | 68 | * this version is required to be runnable on Java SE 7 |
| aoqi@0 | 69 | * implementations. Future versions of the API that are only required |
| aoqi@0 | 70 | * to run on Java SE 8 and later may take advantage of default methods |
| aoqi@0 | 71 | * in this situation. |
| aoqi@0 | 72 | * |
| aoqi@0 | 73 | * @param <R> the return type of this visitor's methods. Use {@link |
| aoqi@0 | 74 | * Void} for visitors that do not need to return results. |
| aoqi@0 | 75 | * @param <P> the type of the additional parameter to this visitor's |
| aoqi@0 | 76 | * methods. Use {@code Void} for visitors that do not need an |
| aoqi@0 | 77 | * additional parameter. |
| aoqi@0 | 78 | * |
| aoqi@0 | 79 | * @see SimpleTypeVisitor6 |
| aoqi@0 | 80 | * @see SimpleTypeVisitor7 |
| aoqi@0 | 81 | * @since 1.8 |
| aoqi@0 | 82 | */ |
| aoqi@0 | 83 | @SupportedSourceVersion(RELEASE_8) |
| aoqi@0 | 84 | public class SimpleTypeVisitor8<R, P> extends SimpleTypeVisitor7<R, P> { |
| aoqi@0 | 85 | /** |
| aoqi@0 | 86 | * Constructor for concrete subclasses; uses {@code null} for the |
| aoqi@0 | 87 | * default value. |
| aoqi@0 | 88 | */ |
| aoqi@0 | 89 | protected SimpleTypeVisitor8(){ |
| aoqi@0 | 90 | super(null); |
| aoqi@0 | 91 | } |
| aoqi@0 | 92 | |
| aoqi@0 | 93 | /** |
| aoqi@0 | 94 | * Constructor for concrete subclasses; uses the argument for the |
| aoqi@0 | 95 | * default value. |
| aoqi@0 | 96 | * |
| aoqi@0 | 97 | * @param defaultValue the value to assign to {@link #DEFAULT_VALUE} |
| aoqi@0 | 98 | */ |
| aoqi@0 | 99 | protected SimpleTypeVisitor8(R defaultValue){ |
| aoqi@0 | 100 | super(defaultValue); |
| aoqi@0 | 101 | } |
| aoqi@0 | 102 | |
| aoqi@0 | 103 | /** |
| aoqi@0 | 104 | * This implementation visits an {@code IntersectionType} by calling |
| aoqi@0 | 105 | * {@code defaultAction}. |
| aoqi@0 | 106 | * |
| aoqi@0 | 107 | * @param t {@inheritDoc} |
| aoqi@0 | 108 | * @param p {@inheritDoc} |
| aoqi@0 | 109 | * @return the result of {@code defaultAction} |
| aoqi@0 | 110 | */ |
| aoqi@0 | 111 | @Override |
| aoqi@0 | 112 | public R visitIntersection(IntersectionType t, P p){ |
| aoqi@0 | 113 | return defaultAction(t, p); |
| aoqi@0 | 114 | } |
| aoqi@0 | 115 | } |
