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 * Copyright (c) 2017, Google Inc. 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
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 * questions.
 */

/*
 * @test
 * @bug 8193216
 * @summary Filer should warn if processors redefine symbols from the classpath or sourcepath
 * @library /tools/javac/lib
 * @modules java.compiler
 *          jdk.compiler
 * @build JavacTestingAbstractProcessor TestProcTypeAlreadyExistsWarning
 * @compile A.java
 * @compile/ref=warn.out -XDrawDiagnostics -Xlint:processing -processor TestProcTypeAlreadyExistsWarning B.java
 */

import static java.nio.charset.StandardCharsets.UTF_8;

import java.io.IOError;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Set;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedAnnotationTypes;
import javax.lang.model.element.TypeElement;

@SupportedAnnotationTypes("*")
public class TestProcTypeAlreadyExistsWarning extends JavacTestingAbstractProcessor {

    int round = 0;

    @Override
    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
        round++;

        if (round == 1) {
            try (OutputStream os =
                    processingEnv.getFiler().createSourceFile("A").openOutputStream()) {
                os.write("class A {}".getBytes(UTF_8));
            } catch (IOException e) {
                throw new IOError(e);
            }
        }

        return false;
    }
}
