/*
 * Copyright (C) 2018 The Dagger Authors.
 *
 * 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 dagger.internal.codegen.validation;

import static com.google.common.collect.Maps.uniqueIndex;

import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.squareup.javapoet.ClassName;
import dagger.Module;
import dagger.Provides;

/**
 * Binds each {@link BindingMethodValidator} into a map, keyed by {@link
 * BindingMethodValidator#methodAnnotation()}.
 */
@Module
public interface BindingMethodValidatorsModule {
  @Provides
  static ImmutableMap<ClassName, BindingMethodValidator> indexValidators(
      ProvidesMethodValidator providesMethodValidator,
      ProducesMethodValidator producesMethodValidator,
      BindsMethodValidator bindsMethodValidator,
      MultibindsMethodValidator multibindsMethodValidator,
      BindsOptionalOfMethodValidator bindsOptionalOfMethodValidator) {
    return uniqueIndex(
        ImmutableSet.of(
            providesMethodValidator,
            producesMethodValidator,
            bindsMethodValidator,
            multibindsMethodValidator,
            bindsOptionalOfMethodValidator),
        BindingMethodValidator::methodAnnotation);
  }
}