/*

 * 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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 */

/*

 * @test

 * @bug 6458749

 * @summary  TypeParameterElement.getEnclosedElements() throws NPE within javac

 * @build T6458749

 * @compile -processor T6458749 -proc:only T6458749.java

 */

import java.util.Set;

import javax.annotation.processing.*;

import javax.lang.model.element.*;

import javax.lang.model.util.ElementFilter;

import javax.lang.model.SourceVersion;

@SupportedAnnotationTypes("*")

public class T6458749<T> extends AbstractProcessor {

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

        if (!renv.processingOver()) {

            for(TypeElement e : ElementFilter.typesIn(renv.getRootElements())) {

                System.out.printf("Element %s:%n", e.toString());

                try {

                    for (TypeParameterElement tp : e.getTypeParameters()) {

                        System.out.printf("Type param %s", tp.toString());

                        if (! tp.getEnclosedElements().isEmpty()) {

                            throw new AssertionError("TypeParameterElement.getEnclosedElements() should return empty list");

                        }

                    }

                } catch (NullPointerException npe) {

                    throw new AssertionError("NPE from TypeParameterElement.getEnclosedElements()", npe);

                }

            }

        }

        return true;

    }

    public SourceVersion getSupportedSourceVersion() {

        return SourceVersion.latest();

    }

}