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Java example source code file (InjectorOptionsProcessor.java)

This example Java source code file (InjectorOptionsProcessor.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

abstractprocessor, boolean, injectoroptions, injectoroptionsprocessor, override

The InjectorOptionsProcessor.java Java example source code

/*
 * Copyright (C) 2010 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 static com.google.common.base.Preconditions.checkState;

import com.google.inject.Stage;
import com.google.inject.internal.InjectorImpl.InjectorOptions;
import com.google.inject.spi.DisableCircularProxiesOption;
import com.google.inject.spi.RequireAtInjectOnConstructorsOption;
import com.google.inject.spi.RequireExactBindingAnnotationsOption;
import com.google.inject.spi.RequireExplicitBindingsOption;

/**
 * A processor to gather injector options.
 *
 * @author sameb@google.com (Sam Berlin)
 */
class InjectorOptionsProcessor extends AbstractProcessor {

  private boolean disableCircularProxies = false;
  private boolean jitDisabled = false;
  private boolean atInjectRequired = false;
  private boolean exactBindingAnnotationsRequired = false;

  InjectorOptionsProcessor(Errors errors) {
    super(errors);
  }

  @Override
  public Boolean visit(DisableCircularProxiesOption option) {
    disableCircularProxies = true;
    return true;
  }

  @Override
  public Boolean visit(RequireExplicitBindingsOption option) {
    jitDisabled = true;
    return true;
  }
  
  @Override
  public Boolean visit(RequireAtInjectOnConstructorsOption option) {
    atInjectRequired = true;
    return true;    
  }

  @Override
  public Boolean visit(RequireExactBindingAnnotationsOption option) {
    exactBindingAnnotationsRequired = true;
    return true;
  }

  InjectorOptions getOptions(Stage stage, InjectorOptions parentOptions) {
    checkNotNull(stage, "stage must be set");
    if(parentOptions == null) {
      return new InjectorOptions(
          stage,
          jitDisabled,
          disableCircularProxies,
          atInjectRequired,
          exactBindingAnnotationsRequired);
    } else {
      checkState(stage == parentOptions.stage, "child & parent stage don't match");
      return new InjectorOptions(
          stage,
          jitDisabled || parentOptions.jitDisabled,
          disableCircularProxies || parentOptions.disableCircularProxies,
          atInjectRequired || parentOptions.atInjectRequired,
          exactBindingAnnotationsRequired || parentOptions.exactBindingAnnotationsRequired);
    }
  }

}

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