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/**
* Copyright (C) 2009 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.internal;
import com.google.inject.Binder;
import com.google.inject.Key;
import com.google.inject.binder.AnnotatedElementBuilder;
import com.google.common.base.Preconditions;
import java.lang.annotation.Annotation;
/**
* For private binder's expose() method.
*/
public class ExposureBuilder<T> implements AnnotatedElementBuilder {
private final Binder binder;
private final Object source;
private Key<T> key;
public ExposureBuilder(Binder binder, Object source, Key<T> key) {
this.binder = binder;
this.source = source;
this.key = key;
}
protected void checkNotAnnotated() {
if (key.getAnnotationType() != null) {
binder.addError(AbstractBindingBuilder.ANNOTATION_ALREADY_SPECIFIED);
}
}
public void annotatedWith(Class<? extends Annotation> annotationType) {
Preconditions.checkNotNull(annotationType, "annotationType");
checkNotAnnotated();
key = Key.get(key.getTypeLiteral(), annotationType);
}
public void annotatedWith(Annotation annotation) {
Preconditions.checkNotNull(annotation, "annotation");
checkNotAnnotated();
key = Key.get(key.getTypeLiteral(), annotation);
}
public Key<?> getKey() {
return key;
}
public Object getSource() {
return source;
}
@Override public String toString() {
return "AnnotatedElementBuilder";
}
}
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