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.base;
18  
19  import com.google.common.annotations.GwtCompatible;
20  
21  import java.util.Set;
22  
23  import javax.annotation.Nullable;
24  
25  /**
26   * Contains dummy collection implementations to convince GWT that part of
27   * serializing a collection is serializing its elements.
28   *
29   * <p>See {@linkplain com.google.common.collect.GwtSerializationDependencies the
30   * com.google.common.collect version} for more details.
31   *
32   * @author Chris Povirk
33   */
34  @GwtCompatible
35  final class GwtSerializationDependencies {
36    private GwtSerializationDependencies() {}
37  
38    static final class OptionalDependencies<T> extends Optional<T> {
39      T value;
40  
41      OptionalDependencies() {
42        super();
43      }
44  
45      @Override public boolean isPresent() {
46        throw new AssertionError();
47      }
48  
49      @Override public T get() {
50        throw new AssertionError();
51      }
52  
53      @Override public T or(T defaultValue) {
54        throw new AssertionError();
55      }
56  
57      @Override public Optional<T> or(Optional<? extends T> secondChoice) {
58        throw new AssertionError();
59      }
60  
61      @Override public T or(Supplier<? extends T> supplier) {
62        throw new AssertionError();
63      }
64  
65      @Override public T orNull() {
66        throw new AssertionError();
67      }
68  
69      @Override public Set<T> asSet() {
70        throw new AssertionError();
71      }
72  
73      @Override public <V> Optional<V> transform(
74          Function<? super T, V> function) {
75        throw new AssertionError();
76      }
77  
78      @Override public boolean equals(@Nullable Object object) {
79        throw new AssertionError();
80      }
81  
82      @Override public int hashCode() {
83        throw new AssertionError();
84      }
85  
86      @Override public String toString() {
87        throw new AssertionError();
88      }
89    }
90  }