001package ball.annotation.processing;
002/*-
003 * ##########################################################################
004 * Utilities
005 * $Id: TargetMustHaveConstructor.java 6104 2020-06-03 18:26:30Z ball $
006 * $HeadURL: svn+ssh://svn.hcf.dev/var/spool/scm/repository.svn/ball-util/trunk/src/main/java/ball/annotation/processing/TargetMustHaveConstructor.java $
007 * %%
008 * Copyright (C) 2008 - 2020 Allen D. Ball
009 * %%
010 * Licensed under the Apache License, Version 2.0 (the "License");
011 * you may not use this file except in compliance with the License.
012 * You may obtain a copy of the License at
013 *
014 *      http://www.apache.org/licenses/LICENSE-2.0
015 *
016 * Unless required by applicable law or agreed to in writing, software
017 * distributed under the License is distributed on an "AS IS" BASIS,
018 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
019 * See the License for the specific language governing permissions and
020 * limitations under the License.
021 * ##########################################################################
022 */
023import ball.annotation.ServiceProviderFor;
024import java.lang.annotation.Documented;
025import java.lang.annotation.Retention;
026import java.lang.annotation.Target;
027import javax.annotation.processing.Processor;
028import javax.lang.model.element.Modifier;
029import lombok.NoArgsConstructor;
030import lombok.ToString;
031
032import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
033import static java.lang.annotation.RetentionPolicy.RUNTIME;
034import static javax.lang.model.element.Modifier.PUBLIC;
035
036/**
037 * {@link java.lang.annotation.Annotation} to specify annotated
038 * {@link Class} must have a corresponding constructor.  The default values
039 * correspond to a public no-argument constructor.
040 *
041 * @see AnnotatedProcessor
042 *
043 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball}
044 * @version $Revision: 6104 $
045 */
046@Documented
047@Retention(RUNTIME)
048@Target(ANNOTATION_TYPE)
049public @interface TargetMustHaveConstructor {
050    Modifier value() default PUBLIC;
051    Class<?>[] parameters() default { };
052
053    /**
054     * {@link Processor} implementation.
055     */
056    @ServiceProviderFor({ Processor.class })
057    @For({ TargetMustHaveConstructor.class })
058    @NoArgsConstructor @ToString
059    public static class ProcessorImpl extends AnnotatedProcessor {
060    }
061}