/*
* 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.guiceberry.controllable;
import com.google.inject.Binder;
import com.google.inject.Binding;
import com.google.inject.Key;
import com.google.inject.Scope;
import com.google.inject.binder.ScopedBindingBuilder;
import com.google.inject.spi.BindingScopingVisitor;
import com.google.inject.spi.DefaultBindingTargetVisitor;
import com.google.inject.spi.DefaultElementVisitor;
import com.google.inject.spi.Element;
import com.google.inject.spi.InstanceBinding;
import com.google.inject.spi.LinkedKeyBinding;
import com.google.inject.spi.ProviderInstanceBinding;
import com.google.inject.spi.ProviderKeyBinding;
import com.google.inject.spi.UntargettedBinding;
import java.lang.annotation.Annotation;
/**
* @author Jesse Wilson
* @author Luiz-Otavio Zorzella
*/
//TODO: document and move to Guice?
class ModuleWriter extends DefaultElementVisitor<Void> {
protected final Binder binder;
ModuleWriter(Binder binder) {
this.binder = binder;
}
@Override protected Void visitOther(Element element) {
element.applyTo(binder);
return null;
}
void writeAll(Iterable<? extends Element> elements) {
for (Element element : elements) {
element.acceptVisitor(this);
}
}
/**
* Execute this target against the linked binding builder.
*/
<T> ScopedBindingBuilder bindKeyToTarget(
final Binding<T> binding, final Binder binder, final Key<T> key) {
return binding.acceptTargetVisitor(new DefaultBindingTargetVisitor<T, ScopedBindingBuilder>() {
@Override
public ScopedBindingBuilder visit(InstanceBinding<? extends T> binding) {
binder.bind(key).toInstance(binding.getInstance());
return null;
}
@Override
public ScopedBindingBuilder visit(
ProviderInstanceBinding<? extends T> binding) {
return binder.bind(key).toProvider(binding.getProviderInstance());
}
@Override
public ScopedBindingBuilder visit(ProviderKeyBinding<? extends T> binding) {
return binder.bind(key).toProvider(binding.getProviderKey());
}
@Override
public ScopedBindingBuilder visit(LinkedKeyBinding<? extends T> binding) {
return binder.bind(key).to(binding.getLinkedKey());
}
@Override
public ScopedBindingBuilder visit(UntargettedBinding<? extends T> binding) {
return binder.bind(key);
}
});
}
protected void applyScoping(Binding<?> binding, final ScopedBindingBuilder scopedBindingBuilder) {
binding.acceptScopingVisitor(new BindingScopingVisitor<Void>() {
public Void visitEagerSingleton() {
if (scopedBindingBuilder != null) {
scopedBindingBuilder.asEagerSingleton();
}
return null;
}
public Void visitScope(Scope scope) {
scopedBindingBuilder.in(scope);
return null;
}
public Void visitScopeAnnotation(Class<? extends Annotation> scopeAnnotation) {
scopedBindingBuilder.in(scopeAnnotation);
return null;
}
public Void visitNoScoping() {
// do nothing
return null;
}
});
}
}