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1   /*
2    * Copyright (C) 2012 The Guava Authors
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package com.google.common.collect;
18  
19  import com.google.gwt.user.client.rpc.SerializationException;
20  import com.google.gwt.user.client.rpc.SerializationStreamReader;
21  import com.google.gwt.user.client.rpc.SerializationStreamWriter;
22  import com.google.gwt.user.client.rpc.core.java.util.Map_CustomFieldSerializerBase;
23  import java.util.Map;
24  
25  /**
26   * This class implements the GWT serialization of {@link ImmutableEnumMap}.
27   *
28   * @author Louis Wasserman
29   */
30  public class ImmutableEnumMap_CustomFieldSerializer {
31  
32    public static void deserialize(
33        SerializationStreamReader reader, ImmutableEnumMap<?, ?> instance) {}
34  
35    public static <K extends Enum<K>, V> ImmutableEnumMap<?, ?> instantiate(
36        SerializationStreamReader reader) throws SerializationException {
37      Map<K, V> deserialized = Maps.newHashMap();
38      Map_CustomFieldSerializerBase.deserialize(reader, deserialized);
39      /*
40       * It is safe to cast to ImmutableEnumSet because in order for it to be
41       * serialized as an ImmutableEnumSet, it must be non-empty to start
42       * with.
43       */
44      return (ImmutableEnumMap<?, ?>) Maps.immutableEnumMap(deserialized);
45    }
46  
47    public static void serialize(SerializationStreamWriter writer, ImmutableEnumMap<?, ?> instance)
48        throws SerializationException {
49      Map_CustomFieldSerializerBase.serialize(writer, instance);
50    }
51  }