Wed, 27 Apr 2016 01:34:52 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 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 jdk; |
aoqi@0 | 27 | |
aoqi@0 | 28 | import java.lang.annotation.*; |
aoqi@0 | 29 | |
aoqi@0 | 30 | /** |
aoqi@0 | 31 | * Indicates whether or not a JDK specific type or package is an |
aoqi@0 | 32 | * exported part of the JDK suitable for use outside of the JDK |
aoqi@0 | 33 | * implementation itself. |
aoqi@0 | 34 | * |
aoqi@0 | 35 | * This annotation should only be applied to types and packages |
aoqi@0 | 36 | * <em>outside</em> of the Java SE namespaces of {@code java.*} and |
aoqi@0 | 37 | * {@code javax.*} packages. For example, certain portions of {@code |
aoqi@0 | 38 | * com.sun.*} are official parts of the JDK meant to be generally |
aoqi@0 | 39 | * usable while other portions of {@code com.sun.*} are not. This |
aoqi@0 | 40 | * annotation type allows those portions to be easily and |
aoqi@0 | 41 | * programmatically distinguished. |
aoqi@0 | 42 | * |
aoqi@0 | 43 | * <p>If in one release a type or package is |
aoqi@0 | 44 | * <code>@Exported(true)</code>, in a subsequent major release such a |
aoqi@0 | 45 | * type or package can transition to <code>@Exported(false)</code>. |
aoqi@0 | 46 | * |
aoqi@0 | 47 | * <p>If a type or package is <code>@Exported(false)</code> in a |
aoqi@0 | 48 | * release, it may be removed in a subsequent major release. |
aoqi@0 | 49 | * |
aoqi@0 | 50 | * <p>If a top-level type has an <code>@Exported</code> annotation, |
aoqi@0 | 51 | * any nested member types with the top-level type should have an |
aoqi@0 | 52 | * <code>@Exported</code> annotation with the same value. |
aoqi@0 | 53 | * |
aoqi@0 | 54 | * (In exceptional cases, if a nested type is going to be removed |
aoqi@0 | 55 | * before its enclosing type, the nested type's could be |
aoqi@0 | 56 | * <code>@Exported(false)</code> while its enclosing type was |
aoqi@0 | 57 | * <code>@Exported(true)</code>.) |
aoqi@0 | 58 | * |
aoqi@0 | 59 | * Likewise, if a package has an <code>@Exported</code> annotation, |
aoqi@0 | 60 | * top-level types within that package should also have an |
aoqi@0 | 61 | * <code>@Exported</code> annotation. |
aoqi@0 | 62 | * |
aoqi@0 | 63 | * Sometimes a top-level type may have a different |
aoqi@0 | 64 | * <code>@Exported</code> value than its package. |
aoqi@0 | 65 | * |
aoqi@0 | 66 | * @since 1.8 |
aoqi@0 | 67 | */ |
aoqi@0 | 68 | @Documented |
aoqi@0 | 69 | @Retention(RetentionPolicy.RUNTIME) |
aoqi@0 | 70 | @Target({ElementType.TYPE, ElementType.PACKAGE}) |
aoqi@0 | 71 | @Exported |
aoqi@0 | 72 | public @interface Exported { |
aoqi@0 | 73 | /** |
aoqi@0 | 74 | * Whether or not the annotated type or package is an exported part of the JDK. |
aoqi@0 | 75 | */ |
aoqi@0 | 76 | boolean value() default true; |
aoqi@0 | 77 | } |