alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (T6358168.java)

This example Java source code file (T6358168.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, assertionerror, context, javacfilemanager, javacompiler, javafileobject, linkedhashset, main, net, network, roundenvironment, string, supportedannotationtypes, throwable, typeelement, util, xprintrounds

The T6358168.java Java example source code

/*
 * Copyright (c) 2006, 2011, 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 6358168
 * @summary JavaCompiler.hasBeenUsed is not set in delegateCompiler
 */

import java.io.*;
import java.net.*;
import java.util.*;
import javax.annotation.processing.*;
import javax.lang.model.element.*;
import javax.tools.*;
import com.sun.tools.javac.file.*;
import com.sun.tools.javac.file.JavacFileManager;
import com.sun.tools.javac.main.JavaCompiler;
import com.sun.tools.javac.main.*;
import com.sun.tools.javac.util.*;
import com.sun.tools.javac.util.List; // disambiguate


@SupportedAnnotationTypes("*")
public class T6358168 extends AbstractProcessor {
    private static String testClasses = System.getProperty("test.classes");
    private static String testSrc = System.getProperty("test.src");
    private static String self = T6358168.class.getName();

    public static void main(String... args) throws Throwable {

        JavacFileManager fm = new JavacFileManager(new Context(), false, null);
        JavaFileObject f = fm.getFileForInput(testSrc + File.separatorChar + T6358168.class.getName() + ".java");

        try {
            // first, test case with no annotation processing
            testNoAnnotationProcessing(fm, f);

            // now, test case with annotation processing
            testAnnotationProcessing(fm, f);
        }
        catch (Throwable t) {
            AssertionError e = new AssertionError();
            e.initCause(t);
            throw e;
        }
    }

    static void testNoAnnotationProcessing(JavacFileManager fm, JavaFileObject f) throws Throwable {
        Context context = new Context();
        fm.setContext(context);

        Main compilerMain = new Main("javac", new PrintWriter(System.err, true));
        compilerMain.setOptions(Options.instance(context));
        compilerMain.filenames = new LinkedHashSet<File>();
        compilerMain.processArgs(new String[] { "-d", "." });

        JavaCompiler compiler = JavaCompiler.instance(context);
        compiler.compile(List.of(f));
        try {
            compiler.compile(List.of(f));
            throw new Error("Error: AssertionError not thrown after second call of compile");
        } catch (AssertionError e) {
            System.err.println("Exception from compiler (expected): " + e);
        }
    }

    static void testAnnotationProcessing(JavacFileManager fm, JavaFileObject f) throws Throwable {
        Context context = new Context();
        fm.setContext(context);

        Main compilerMain = new Main("javac", new PrintWriter(System.err, true));
        compilerMain.setOptions(Options.instance(context));
        compilerMain.filenames = new LinkedHashSet<File>();
        compilerMain.processArgs(new String[] {
                                     "-XprintRounds",
                                     "-processorpath", testClasses,
                                     "-processor", self,
                                     "-d", "."});

        JavaCompiler compiler = JavaCompiler.instance(context);
        compiler.initProcessAnnotations(null);
        JavaCompiler compiler2 = compiler.processAnnotations(compiler.enterTrees(compiler.parseFiles(List.of(f))));
        try {
            compiler2.compile(List.of(f));
            throw new Error("Error: AssertionError not thrown after second call of compile");
        } catch (AssertionError e) {
            System.err.println("Exception from compiler (expected): " + e);
        }
    }

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

Other Java examples (source code examples)

Here is a short list of links related to this Java T6358168.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.