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1   /*
2    * Copyright (C) 2009 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.Collection_CustomFieldSerializerBase;
23  import java.util.List;
24  
25  /**
26   * This class implements the GWT serialization of {@link ImmutableEnumSet}.
27   *
28   * @author Hayward Chan
29   */
30  public class ImmutableEnumSet_CustomFieldSerializer {
31  
32    public static void deserialize(SerializationStreamReader reader, ImmutableEnumSet<?> instance) {}
33  
34    public static <E extends Enum<E>> ImmutableEnumSet<?> instantiate(
35        SerializationStreamReader reader) throws SerializationException {
36      List<E> deserialized = Lists.newArrayList();
37      Collection_CustomFieldSerializerBase.deserialize(reader, deserialized);
38      /*
39       * It is safe to cast to ImmutableEnumSet because in order for it to be
40       * serialized as an ImmutableEnumSet, it must be non-empty to start
41       * with.
42       */
43      return (ImmutableEnumSet<?>) Sets.immutableEnumSet(deserialized);
44    }
45  
46    public static void serialize(SerializationStreamWriter writer, ImmutableEnumSet<?> instance)
47        throws SerializationException {
48      Collection_CustomFieldSerializerBase.serialize(writer, instance);
49    }
50  }