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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.ArrayList;
24  import java.util.Comparator;
25  import java.util.List;
26  
27  /**
28   * This class implements the GWT serialization of
29   * {@link RegularImmutableSortedSet}.
30   *
31   * @author Chris Povirk
32   */
33  public class RegularImmutableSortedSet_CustomFieldSerializer {
34    public static void deserialize(
35        SerializationStreamReader reader, RegularImmutableSortedSet<?> instance) {}
36  
37    public static RegularImmutableSortedSet<Object> instantiate(SerializationStreamReader reader)
38        throws SerializationException {
39      /*
40       * Nothing we can do, but we're already assuming the serialized form is
41       * correctly typed, anyway.
42       */
43      @SuppressWarnings("unchecked")
44      Comparator<Object> comparator = (Comparator<Object>) reader.readObject();
45  
46      List<Object> elements = new ArrayList<>();
47      Collection_CustomFieldSerializerBase.deserialize(reader, elements);
48      /*
49       * For this custom field serializer to be invoked, the set must have been
50       * RegularImmutableSortedSet before it's serialized. Since
51       * RegularImmutableSortedSet always have one or more elements,
52       * ImmutableSortedSet.copyOf always return a RegularImmutableSortedSet back.
53       */
54      return (RegularImmutableSortedSet<Object>) ImmutableSortedSet.copyOf(comparator, elements);
55    }
56  
57    public static void serialize(
58        SerializationStreamWriter writer, RegularImmutableSortedSet<?> instance)
59        throws SerializationException {
60      writer.writeObject(instance.comparator());
61  
62      Collection_CustomFieldSerializerBase.serialize(writer, instance);
63    }
64  }