Java example source code file (T6358024.java)

This example Java source code file (T6358024.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

abstractprocessor, arraylist, assertionerror, context, javacfilemanager, javactaskimpl, javafileobject, mytasklistener, option, roundenvironment, string, supportedannotationtypes, throwable, util, xoption

The T6358024.java Java example source code

/*
 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 6358024
 * @summary TaskListener should be propogated between processing rounds
 */

import java.io.*;
import java.util.*;
import java.util.List;
import javax.annotation.processing.*;
import javax.lang.model.element.*;
import javax.tools.*;
import com.sun.source.util.*;
import com.sun.tools.javac.api.*;
import com.sun.tools.javac.file.*;
import com.sun.tools.javac.file.JavacFileManager;
import com.sun.tools.javac.main.*;
import com.sun.tools.javac.util.*;


@SupportedAnnotationTypes("*")
public class T6358024 extends AbstractProcessor {
    static JavacFileManager fm;
    public static void main(String... args) throws Throwable {
        String self = T6358024.class.getName();

        String testSrc = System.getProperty("test.src");

        fm = new JavacFileManager(new Context(), false, null);
        JavaFileObject f = fm.getFileForInput(testSrc + File.separatorChar + self + ".java");

        test(fm, f,
             new Option[] { new Option("-d", ".")},
             7);

        test(fm, f,
             new Option[] { new XOption("-XprintRounds"),
                            new Option("-processorpath", "."),
                            new Option("-processor", self) },
             12);
    }

    static void test(JavacFileManager fm, JavaFileObject f, Option[] opts, int expect) throws Throwable {
        PrintWriter out = new PrintWriter(System.err, true);

        JavacTool tool = JavacTool.create();
        List<String> flags = new ArrayList();
        for (Option opt: opts) {
            flags.add(opt.name);
            for (Object arg : opt.args)
                flags.add(arg.toString());
        }

        JavacTaskImpl task = (JavacTaskImpl) tool.getTask(out,
                                                          fm,
                                                          null,
                                                          flags,
                                                          null,
                                                          Arrays.asList(f));
        MyTaskListener tl = new MyTaskListener();
        task.setTaskListener(tl);
        task.call();
        if (tl.started != expect)
            throw new AssertionError("Unexpected number of TaskListener events; "
                                     + "expected " + expect + ", found " + tl.started);
    }

    public boolean process(Set<? extends TypeElement> tes, RoundEnvironment renv) {
        return true;
    }

    static class MyTaskListener implements TaskListener {
        public void started(TaskEvent e) {
            System.err.println("Started: " + e);
            started++;
        }
        public void finished(TaskEvent e) {
        }

        int started = 0;
    }

    static class Option {
        Option(String name, String... args) {
            this.name = name;
            this.args = args;
        }
        public final String name;
        public final String[] args;
    }

    static class XOption extends Option {
        XOption(String name, String... args) {
            super(name, args);
        }
    }
}