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 {
GwtSerializationDependencies()36   private GwtSerializationDependencies() {}
37 
38   static final class OptionalDependencies<T> extends Optional<T> {
39     T value;
40 
OptionalDependencies()41     OptionalDependencies() {
42       super();
43     }
44 
isPresent()45     @Override public boolean isPresent() {
46       throw new AssertionError();
47     }
48 
get()49     @Override public T get() {
50       throw new AssertionError();
51     }
52 
or(T defaultValue)53     @Override public T or(T defaultValue) {
54       throw new AssertionError();
55     }
56 
or(Optional<? extends T> secondChoice)57     @Override public Optional<T> or(Optional<? extends T> secondChoice) {
58       throw new AssertionError();
59     }
60 
or(Supplier<? extends T> supplier)61     @Override public T or(Supplier<? extends T> supplier) {
62       throw new AssertionError();
63     }
64 
orNull()65     @Override public T orNull() {
66       throw new AssertionError();
67     }
68 
asSet()69     @Override public Set<T> asSet() {
70       throw new AssertionError();
71     }
72 
transform( Function<? super T, V> function)73     @Override public <V> Optional<V> transform(
74         Function<? super T, V> function) {
75       throw new AssertionError();
76     }
77 
equals(@ullable Object object)78     @Override public boolean equals(@Nullable Object object) {
79       throw new AssertionError();
80     }
81 
hashCode()82     @Override public int hashCode() {
83       throw new AssertionError();
84     }
85 
toString()86     @Override public String toString() {
87       throw new AssertionError();
88     }
89   }
90 }
91