com.google.inject.internal.ScopeBindingProcessor Maven / Gradle / Ivy
/*
* 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.internal;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.inject.Scope;
import com.google.inject.spi.ScopeBinding;
import java.lang.annotation.Annotation;
/**
* Handles {@code Binder.bindScope} commands.
*
* @author [email protected] (Bob Lee)
* @author [email protected] (Jesse Wilson)
*/
final class ScopeBindingProcessor extends AbstractProcessor {
ScopeBindingProcessor(Errors errors) {
super(errors);
}
@Override
public Boolean visit(ScopeBinding command) {
Scope scope = checkNotNull(command.getScope(), "scope");
Class annotationType =
checkNotNull(command.getAnnotationType(), "annotation type");
if (!Annotations.isScopeAnnotation(annotationType)) {
errors.missingScopeAnnotation(annotationType);
// Go ahead and bind anyway so we don't get collateral errors.
}
if (!Annotations.isRetainedAtRuntime(annotationType)) {
errors.missingRuntimeRetention(annotationType);
// Go ahead and bind anyway so we don't get collateral errors.
}
ScopeBinding existing = injector.state.getScopeBinding(annotationType);
if (existing != null) {
if (!scope.equals(existing.getScope())) {
errors.duplicateScopes(existing, annotationType, scope);
}
} else {
injector.state.putScopeBinding(annotationType, command);
}
return true;
}
}