001 /*
002 * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package com.sun.tools.apt;
027
028 import java.io.PrintWriter;
029 import com.sun.mirror.apt.AnnotationProcessorFactory;
030
031 /**
032 * The main program for the command-line tool apt.
033 *
034 * <p>Nothing described in this source file is part of any supported
035 * API. If you write code that depends on this, you do so at your own
036 * risk. This code and its internal interfaces are subject to change
037 * or deletion without notice.
038 */
039 public class Main {
040
041 static {
042 ClassLoader loader = Main.class.getClassLoader();
043 if (loader != null)
044 loader.setPackageAssertionStatus("com.sun.tools.apt", true);
045 }
046
047 /** Command line interface. If args is <tt>null</tt>, a
048 * <tt>NullPointerException</tt> is thrown.
049 * @param args The command line parameters.
050 */
051 public static void main(String... args) {
052 System.exit(process(args));
053 }
054
055 /** Programatic interface. If args is <tt>null</tt>, a
056 * <tt>NullPointerException</tt> is thrown.
057 * Output is directed to <tt>System.err</tt>.
058 * @param args The command line parameters.
059 */
060 public static int process(String... args) {
061 return processing(null, null, args);
062 }
063
064 /** Programmatic interface. If any argument
065 * is <tt>null</tt>, a <tt>NullPointerException</tt> is thrown.
066 * @param args The command line parameters.
067 * @param out Where the tool's output is directed.
068 */
069 public static int process(PrintWriter out, String... args) {
070 if (out == null)
071 throw new NullPointerException("Parameter out cannot be null.");
072 return processing(null, out, args);
073 }
074
075 /** Programmatic interface. If <tt>factory</tt> or <tt>args</tt>
076 * is <tt>null</tt>, a <tt>NullPointerException</tt> is thrown.
077 * The "<tt>-factory</tt>" and "<tt>-factorypath</tt>"
078 * command line parameters are ignored by this entry point.
079 * Output is directed to <tt>System.err</tt>.
080 *
081 * @param factory The annotation processor factory to use
082 * @param args The command line parameters.
083 */
084 public static int process(AnnotationProcessorFactory factory, String... args) {
085 return process(factory, new PrintWriter(System.err, true), args);
086 }
087
088 /** Programmatic interface. If any argument
089 * is <tt>null</tt>, a <tt>NullPointerException</tt> is thrown.
090 * The "<tt>-factory</tt>" and "<tt>-factorypath</tt>"
091 * command line parameters are ignored by this entry point.
092 *
093 * @param factory The annotation processor factory to use
094 * @param args The command line parameters.
095 * @param out Where the tool's output is directed.
096 */
097 public static int process(AnnotationProcessorFactory factory, PrintWriter out,
098 String... args) {
099 if (out == null)
100 throw new NullPointerException("Parameter out cannot be null.");
101 if (factory == null)
102 throw new NullPointerException("Parameter factory cannot be null");
103 return processing(factory, out, args);
104 }
105
106 private static int processing(AnnotationProcessorFactory factory,
107 PrintWriter out,
108 String... args) {
109 if (out == null)
110 out = new PrintWriter(System.err, true);
111 com.sun.tools.apt.main.Main compiler =
112 new com.sun.tools.apt.main.Main("apt", out);
113 return compiler.compile(args, factory);
114 }
115 }