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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 *
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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 8228988 8266598
 * @summary An annotation-typed property of an annotation that is represented as an
 *          incompatible property of another type should yield an AnnotationTypeMismatchException.
 * @run main AnnotationTypeMismatchTest
 */

import java.lang.annotation.AnnotationTypeMismatchException;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.classfile.Annotation;
import java.lang.classfile.AnnotationElement;
import java.lang.classfile.AnnotationValue;
import java.lang.classfile.ClassFile;
import java.lang.classfile.attribute.RuntimeVisibleAnnotationsAttribute;
import java.lang.constant.ClassDesc;

import static java.lang.constant.ConstantDescs.CD_Object;

public class AnnotationTypeMismatchTest {

    public static void main(String[] args) throws Exception {
        /*
         * @AnAnnotation(value = AnEnum.VALUE) // would now be: value = @Value
         * class Carrier { }
         */
        byte[] b = ClassFile.of().build(ClassDesc.of("sample", "Carrier"), clb -> {
            clb.withSuperclass(CD_Object);
            clb.with(RuntimeVisibleAnnotationsAttribute.of(
                    Annotation.of(
                            AnAnnotation.class.describeConstable().orElseThrow(),
                            AnnotationElement.of("value", AnnotationValue.of(AnEnum.VALUE))
                    )
            ));
        });
        ByteArrayClassLoader cl = new ByteArrayClassLoader(AnnotationTypeMismatchTest.class.getClassLoader());
        cl.init(b);
        AnAnnotation sample = cl.loadClass("sample.Carrier").getAnnotation(AnAnnotation.class);
        try {
            Value value = sample.value();
            throw new IllegalStateException("Found value: " + value);
        } catch (AnnotationTypeMismatchException e) {
            if (!e.element().getName().equals("value")) {
                throw new IllegalStateException("Unexpected element: " + e.element());
            } else if (!e.foundType().equals(AnEnum.class.getName() + "." + AnEnum.VALUE.name())) {
                throw new IllegalStateException("Unexpected type: " + e.foundType());
            }
        }
    }

    public enum AnEnum {
        VALUE
    }

    @Retention(RetentionPolicy.RUNTIME)
    public @interface AnAnnotation {
        Value value() default @Value;
    }

    public @interface Value { }

    public static class ByteArrayClassLoader extends ClassLoader {

        public ByteArrayClassLoader(ClassLoader parent) {
            super(parent);
        }

        public void init(byte[] b) {
            defineClass("sample.Carrier", b, 0, b.length);
        }
    }
}