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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).

 *

 * 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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 */

import java.util.HashSet;

import java.util.Set;

import javax.annotation.processing.*;

import javax.lang.model.SourceVersion;

import javax.lang.model.element.*;

import javax.lang.model.util.ElementFilter;

import com.sun.source.util.JavacTask;

import com.sun.source.util.TaskEvent;

import com.sun.source.util.TaskListener;

import com.sun.tools.javac.main.JavaCompiler;

import com.sun.tools.javac.processing.JavacProcessingEnvironment;

import com.sun.tools.javac.util.Context;

/*

 * @test

 * @summary test that package annotations are available to type processors.

 * This class implements the functionality of a type processor, as previously

 * embodied by the AbstractTypeProcessor class.

 *

 * @author Mahmood Ali

 * @author Werner Dietl

 *

 * @compile PackageProcessor.java

 * @compile -cp . -processor PackageProcessor mypackage/Anno.java mypackage/MyClass.java mypackage/package-info.java

 */

@SupportedAnnotationTypes("*")

public class PackageProcessor extends AbstractProcessor {

    private final AttributionTaskListener listener = new AttributionTaskListener();

    private final Set<Name> elements = new HashSet<Name>();

    @Override

    public final void init(ProcessingEnvironment env) {

        super.init(env);

        JavacTask.instance(env).addTaskListener(listener);

        Context ctx = ((JavacProcessingEnvironment)processingEnv).getContext();

        JavaCompiler compiler = JavaCompiler.instance(ctx);

        compiler.shouldStopPolicyIfNoError = CompileState.max(compiler.shouldStopPolicyIfNoError,

                CompileState.FLOW);

    }

    @Override

    public final boolean process(Set<? extends TypeElement> annotations,

            RoundEnvironment roundEnv) {

        for (TypeElement elem : ElementFilter.typesIn(roundEnv.getRootElements())) {

            elements.add(elem.getQualifiedName());

        }

        return false;

    }

    @Override

    public SourceVersion getSupportedSourceVersion() {

        return SourceVersion.latest();

    }

    private final class AttributionTaskListener implements TaskListener {

        @Override

        public void started(TaskEvent e) { }

        @Override

        public void finished(TaskEvent e) {

            if (e.getKind() != TaskEvent.Kind.ANALYZE)

                return;

            if (!elements.remove(e.getTypeElement().getQualifiedName()))

                return;

            if (e.getTypeElement().getSimpleName().contentEquals("MyClass")) {

                Element owner = e.getTypeElement().getEnclosingElement();

                if (owner.getKind() != ElementKind.PACKAGE)

                    throw new RuntimeException("class owner should be a package: " + owner);

                if (owner.getAnnotationMirrors().size() != 1)

                    throw new RuntimeException("the owner package should have one annotation: " + owner);

            }

        }

    }

}