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
17package com.google.common.collect;
18
19import com.google.gwt.user.client.rpc.SerializationException;
20import com.google.gwt.user.client.rpc.SerializationStreamReader;
21import com.google.gwt.user.client.rpc.SerializationStreamWriter;
22import com.google.gwt.user.client.rpc.core.java.util.Map_CustomFieldSerializerBase;
23
24import java.util.Comparator;
25import java.util.SortedMap;
26import java.util.TreeMap;
27
28/**
29 * This class contains static utility methods for writing {@code ImmutableSortedMap} GWT field
30 * serializers.
31 *
32 * @author Chris Povirk
33 */
34final class ImmutableSortedMap_CustomFieldSerializerBase {
35  static ImmutableSortedMap<Object, Object> instantiate(SerializationStreamReader reader)
36      throws SerializationException {
37    /*
38     * Nothing we can do, but we're already assuming the serialized form is
39     * correctly typed, anyway.
40     */
41    @SuppressWarnings("unchecked")
42    Comparator<Object> comparator = (Comparator<Object>) reader.readObject();
43
44    SortedMap<Object, Object> entries = new TreeMap<Object, Object>(comparator);
45    Map_CustomFieldSerializerBase.deserialize(reader, entries);
46
47    return ImmutableSortedMap.orderedBy(comparator).putAll(entries).build();
48  }
49
50  static void serialize(SerializationStreamWriter writer, ImmutableSortedMap<?, ?> instance)
51      throws SerializationException {
52    writer.writeObject(instance.comparator());
53
54    Map_CustomFieldSerializerBase.serialize(writer, instance);
55  }
56
57  private ImmutableSortedMap_CustomFieldSerializerBase() {}
58}
59