content: /*
   * Copyright 2010 Proofpoint, 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 io.airlift.json;
  
  import com.google.inject.Binder;
  import com.google.inject.Key;
  import com.google.inject.Scopes;
  import com.google.inject.TypeLiteral;
  import com.google.inject.internal.MoreTypes.ParameterizedTypeImpl;
  
  import java.lang.reflect.Type;
  import java.util.List;
  import java.util.Map;
  
  import static java.util.Objects.requireNonNull;
  
  public class JsonCodecBinder
  {
      private final Binder binder;
  
      public static JsonCodecBinder jsonCodecBinder(Binder binder)
      {
          return new JsonCodecBinder(binder);
      }
  
      private JsonCodecBinder(Binder binder)
      {
          this.binder = requireNonNull(binder, "binder is null").skipSources(getClass());
      }
  
      public void bindJsonCodec(Class<?> type)
      {
          requireNonNull(type, "type is null");
  
          binder.bind(getJsonCodecKey(type)).toProvider(new JsonCodecProvider(type)).in(Scopes.SINGLETON);
      }
  
      public void bindJsonCodec(TypeLiteral<?> type)
      {
          requireNonNull(type, "type is null");
  
          binder.bind(getJsonCodecKey(type.getType())).toProvider(new JsonCodecProvider(type.getType())).in(Scopes.SINGLETON);
      }
  
      public void bindListJsonCodec(Class<?> type)
      {
          requireNonNull(type, "type is null");
  
          ParameterizedTypeImpl listType = new ParameterizedTypeImpl(null, List.class, type);
          binder.bind(getJsonCodecKey(listType)).toProvider(new JsonCodecProvider(listType)).in(Scopes.SINGLETON);
      }
  
      public void bindListJsonCodec(JsonCodec<?> type)
      {
          requireNonNull(type, "type is null");
  
          ParameterizedTypeImpl listType = new ParameterizedTypeImpl(null, List.class, type.getType());
          binder.bind(getJsonCodecKey(listType)).toProvider(new JsonCodecProvider(listType)).in(Scopes.SINGLETON);
      }
  
      public void bindMapJsonCodec(Class<?> keyType, Class<?> valueType)
      {
          requireNonNull(keyType, "keyType is null");
          requireNonNull(valueType, "valueType is null");
  
          ParameterizedTypeImpl mapType = new ParameterizedTypeImpl(null, Map.class, keyType, valueType);
          binder.bind(getJsonCodecKey(mapType)).toProvider(new JsonCodecProvider(mapType)).in(Scopes.SINGLETON);
      }
  
      public void bindMapJsonCodec(Class<?> keyType, JsonCodec<?> valueType)
      {
          requireNonNull(keyType, "keyType is null");
          requireNonNull(valueType, "valueType is null");
  
          ParameterizedTypeImpl mapType = new ParameterizedTypeImpl(null, Map.class, keyType, valueType.getType());
          binder.bind(getJsonCodecKey(mapType)).toProvider(new JsonCodecProvider(mapType)).in(Scopes.SINGLETON);
      }
  
      @SuppressWarnings("unchecked")
      private Key<JsonCodec<?>> getJsonCodecKey(Type type)
      {
          return (Key<JsonCodec<?>>) Key.get(new ParameterizedTypeImpl(null, JsonCodec.class, type));
      }
  }
  