test/langtools/tools/javac/processing/warnings/TestSourceVersionWarnings.java

/*
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 * 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).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @bug 6376083 6376084 6458819 7025784 7025786 7025789
 * @summary Test that warnings about source versions are output as expected.
 * @author  Joseph D. Darcy
 * @modules java.compiler
 *          jdk.compiler
 * @compile TestSourceVersionWarnings.java
 * @compile/ref=gold_0.out             -XDrawDiagnostics -processor TestSourceVersionWarnings -proc:only                            -source  8 -Xlint:-options HelloWorld.java
 * @compile/ref=gold_sv_warn_5_6.out   -XDrawDiagnostics -processor TestSourceVersionWarnings -proc:only -ASourceVersion=RELEASE_5  -source  8 -Xlint:-options HelloWorld.java
 * @compile/ref=gold_unsp_warn.out     -XDrawDiagnostics -processor TestSourceVersionWarnings -proc:only -ASourceVersion=RELEASE_8  -source  8 -Xlint:-options -Aunsupported HelloWorld.java
 * @compile/ref=gold_sv_none.out       -XDrawDiagnostics -processor TestSourceVersionWarnings -proc:only -ASourceVersion=RELEASE_10 -source 10 -Xlint:-options HelloWorld.java
 * @compile/ref=gold_sv_none.out       -XDrawDiagnostics -processor TestSourceVersionWarnings -proc:only -ASourceVersion=RELEASE_11 -source 11 -Xlint:-options HelloWorld.java
 * @compile/ref=gold_sv_none.out       -XDrawDiagnostics -processor TestSourceVersionWarnings -proc:only -ASourceVersion=RELEASE_12 -source 12 -Xlint:-options HelloWorld.java
 */

import java.util.Set;
import java.util.HashSet;
import java.util.Arrays;
import javax.annotation.processing.*;
import javax.lang.model.SourceVersion;
import static javax.lang.model.SourceVersion.*;
import javax.lang.model.element.*;
import javax.lang.model.util.*;


/**
 * This processor returns the supported source level as indicated by
 * the "SourceLevel" option; therefore, don't use
 * JavacTestingAbstractProcessor which returns the latest source
 * level.
 */
@SupportedAnnotationTypes("*")
@SupportedOptions("SourceVersion")
public class TestSourceVersionWarnings extends AbstractProcessor {

    @Override
    public SourceVersion getSupportedSourceVersion() {
        String sourceVersion = processingEnv.getOptions().get("SourceVersion");
        if (sourceVersion == null) {
            processingEnv.getMessager().printWarning("No SourceVersion option given");
            return SourceVersion.RELEASE_8;
        } else {
            return SourceVersion.valueOf(sourceVersion);
        }
    }

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