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/*
 * Copyright (C) 2015 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.spi;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.inject.Binder;
import com.google.inject.internal.Errors;

/**
 * Represents a call to {@link Binder#scanModulesForAnnotatedMethods} in a module.
 *
 * @author [email protected] (Sam Berlin)
 * @since 4.0
 */
public final class ModuleAnnotatedMethodScannerBinding implements Element {
  private final Object source;
  private final ModuleAnnotatedMethodScanner scanner;

  public ModuleAnnotatedMethodScannerBinding(Object source, ModuleAnnotatedMethodScanner scanner) {
    this.source = checkNotNull(source, "source");
    this.scanner = checkNotNull(scanner, "scanner");
  }

  @Override
  public Object getSource() {
    return source;
  }

  public ModuleAnnotatedMethodScanner getScanner() {
    return scanner;
  }

  @Override
  public  T acceptVisitor(ElementVisitor visitor) {
    return visitor.visit(this);
  }

  @Override
  public void applyTo(Binder binder) {
    binder.withSource(getSource()).scanModulesForAnnotatedMethods(scanner);
  }

  @Override
  public String toString() {
    return scanner
        + " which scans for "
        + scanner.annotationClasses()
        + " (bound at "
        + Errors.convert(source)
        + ")";
  }
}