javax.lang.model.util.SimpleAnnotationValueVisitor8 Maven / Gradle / Ivy
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/*
* Copyright (C) 2021 ZeoFlow SRL
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package javax.lang.model.util;
import javax.lang.model.SourceVersion;
import javax.annotation.processing.SupportedSourceVersion;
/**
* A simple visitor for annotation values with default behavior
* appropriate for the {@link SourceVersion#RELEASE_8 RELEASE_8}
* source version. Visit methods call {@link #defaultAction
* defaultAction} passing their arguments to {@code defaultAction}'s
* corresponding parameters.
*
* Methods in this class may be overridden subject to their
* general contract. Note that annotating methods in concrete
* subclasses with {@link java.lang.Override @Override} will help
* ensure that methods are overridden as intended.
*
*
WARNING: The {@code AnnotationValueVisitor} interface
* implemented by this class may have methods added to it in the
* future to accommodate new, currently unknown, language structures
* added to future versions of the Java™ programming language.
* Therefore, methods whose names begin with {@code "visit"} may be
* added to this class in the future; to avoid incompatibilities,
* classes which extend this class should not declare any instance
* methods with names beginning with {@code "visit"}.
*
*
When such a new visit method is added, the default
* implementation in this class will be to call the {@link
* #visitUnknown visitUnknown} method. A new simple annotation
* value visitor class will also be introduced to correspond to the
* new language level; this visitor will have different default
* behavior for the visit method in question. When the new visitor is
* introduced, all or portions of this visitor may be deprecated.
*
*
Note that adding a default implementation of a new visit method
* in a visitor class will occur instead of adding a default
* method directly in the visitor interface since a Java SE 8
* language feature cannot be used to this version of the API since
* this version is required to be runnable on Java SE 7
* implementations. Future versions of the API that are only required
* to run on Java SE 8 and later may take advantage of default methods
* in this situation.
*
* @param the return type of this visitor's methods
* @param the type of the additional parameter to this visitor's methods.
*
* @see SimpleAnnotationValueVisitor6
* @see javax.lang.model.util.SimpleAnnotationValueVisitor7
* @since 1.8
*/
@SupportedSourceVersion(SourceVersion.RELEASE_8)
public class SimpleAnnotationValueVisitor8 extends SimpleAnnotationValueVisitor7
{
/**
* Constructor for concrete subclasses; uses {@code null} for the
* default value.
*/
protected SimpleAnnotationValueVisitor8()
{
super(null);
}
/**
* Constructor for concrete subclasses; uses the argument for the
* default value.
*
* @param defaultValue the value to assign to {@link #DEFAULT_VALUE}
*/
protected SimpleAnnotationValueVisitor8(R defaultValue)
{
super(defaultValue);
}
}