com.google.inject.internal.ProcessedBindingData Maven / Gradle / Ivy
/*
* Copyright (C) 2011 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.common.collect.Lists;
import java.util.List;
/**
* Keeps track of creation listeners & uninitialized bindings, so they can be processed after
* bindings are recorded.
*
* @author [email protected] (Sam Berlin)
*/
class ProcessedBindingData {
private final List creationListeners = Lists.newArrayList();
private final List uninitializedBindings = Lists.newArrayList();
private final List delayedUninitializedBindings = Lists.newArrayList();
void addCreationListener(CreationListener listener) {
creationListeners.add(listener);
}
void addUninitializedBinding(Runnable runnable) {
uninitializedBindings.add(runnable);
}
void addDelayedUninitializedBinding(Runnable runnable) {
delayedUninitializedBindings.add(runnable);
}
/** Initialize bindings. This may be done eagerly */
void initializeBindings() {
for (Runnable initializer : uninitializedBindings) {
initializer.run();
}
}
/**
* Runs creation listeners.
*
* TODO(lukes): figure out exactly why this case exists.
*/
void runCreationListeners(Errors errors) {
for (CreationListener creationListener : creationListeners) {
creationListener.notify(errors);
}
}
/**
* Initialized bindings that need to be delayed until after all injection points and other
* bindings are processed. The main current usecase for this is resolving Optional dependencies
* for OptionalBinder bindings.
*/
void initializeDelayedBindings() {
for (Runnable initializer : delayedUninitializedBindings) {
initializer.run();
}
}
}