src/share/classes/com/sun/source/util/Plugin.java

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1 /*
2 * Copyright (c) 2005, 2013, 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 package com.sun.source.util;
26
27 import java.util.ServiceLoader;
28 import javax.tools.StandardLocation;
29
30 /**
31 * The interface for a javac plug-in.
32 *
33 * <p>The javac plug-in mechanism allows a user to specify one or more plug-ins
34 * on the javac command line, to be started soon after the compilation
35 * has begun. Plug-ins are identified by a user-friendly name. Each plug-in that
36 * is started will be passed an array of strings, which may be used to
37 * provide the plug-in with values for any desired options or other arguments.
38 *
39 * <p>Plug-ins are located via a {@link ServiceLoader},
40 * using the same class path as annotation processors (i.e.
41 * {@link StandardLocation#ANNOTATION_PROCESSOR_PATH ANNOTATION_PROCESSOR_PATH} or
42 * {@code -processorpath}).
43 *
44 * <p>It is expected that a typical plug-in will simply register a
45 * {@link TaskListener} to be informed of events during the execution
46 * of the compilation, and that the rest of the work will be done
47 * by the task listener.
48 *
49 * @since 1.8
50 */
51 @jdk.Exported
52 public interface Plugin {
53 /**
54 * Get the user-friendly name of this plug-in.
55 * @return the user-friendly name of the plug-in
56 */
57 String getName();
58
59 /**
60 * Initialize the plug-in for a given compilation task.
61 * @param task The compilation task that has just been started
62 * @param args Arguments, if any, for the plug-in
63 */
64 void init(JavacTask task, String... args);
65 }

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