001package ball.annotation;
002/*-
003 * ##########################################################################
004 * Utilities
005 * $Id: ConstantValueMustConvertTo.java 5881 2020-05-06 04:14:12Z ball $
006 * $HeadURL: svn+ssh://svn.hcf.dev/var/spool/scm/repository.svn/ball-util/trunk/src/main/java/ball/annotation/ConstantValueMustConvertTo.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 java.lang.annotation.Documented;
024import java.lang.annotation.Retention;
025import java.lang.annotation.Target;
026
027import static java.lang.annotation.ElementType.FIELD;
028import static java.lang.annotation.ElementType.LOCAL_VARIABLE;
029import static java.lang.annotation.RetentionPolicy.RUNTIME;
030
031/**
032 * Annotation to specify a field constant expression must convert to the
033 * specified type.  The test is made at compile time during annotation
034 * processing.
035 *
036 * @see ball.annotation.processing.ConstantValueMustConvertToProcessor
037 *
038 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball}
039 * @version $Revision: 5881 $
040 */
041@Documented
042@Retention(RUNTIME)
043@Target({ FIELD, LOCAL_VARIABLE })
044public @interface ConstantValueMustConvertTo {
045    Class<?> value();
046    String method() default "";
047}