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/**
* Copyright (C) 2008 Google Inc.
*
* 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 com.google.inject.spi;
import com.google.inject.Scope;
import java.lang.annotation.Annotation;
/**
* No-op visitor for subclassing. All interface methods simply delegate to
* {@link #visitOther()}, returning its result.
*
* @param <V> any type to be returned by the visit method. Use {@link Void} with
* {@code return null} if no return type is needed.
*
* @author jessewilson@google.com (Jesse Wilson)
* @since 2.0
*/
public class DefaultBindingScopingVisitor<V> implements BindingScopingVisitor<V> {
/**
* Default visit implementation. Returns {@code null}.
*/
protected V visitOther() {
return null;
}
public V visitEagerSingleton() {
return visitOther();
}
public V visitScope(Scope scope) {
return visitOther();
}
public V visitScopeAnnotation(Class<? extends Annotation> scopeAnnotation) {
return visitOther();
}
public V visitNoScoping() {
return visitOther();
}
}
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