guava
55 строк · 1.6 Кб
1/*
2* Copyright (C) 2008 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.testing.features;
18
19import com.google.common.annotations.GwtCompatible;
20import com.google.common.collect.testing.Helpers;
21import java.lang.annotation.Inherited;
22import java.lang.annotation.Retention;
23import java.lang.annotation.RetentionPolicy;
24import java.util.Set;
25
26/**
27* Optional features of classes derived from {@code Set}.
28*
29* @author George van den Driessche
30*/
31@SuppressWarnings("rawtypes") // maybe avoidable if we rework the whole package?
32@GwtCompatible
33public enum SetFeature implements Feature<Set> {
34GENERAL_PURPOSE(CollectionFeature.GENERAL_PURPOSE);
35
36private final Set<Feature<? super Set>> implied;
37
38SetFeature(Feature<? super Set>... implied) {
39this.implied = Helpers.copyToSet(implied);
40}
41
42@Override
43public Set<Feature<? super Set>> getImpliedFeatures() {
44return implied;
45}
46
47@Retention(RetentionPolicy.RUNTIME)
48@Inherited
49@TesterAnnotation
50public @interface Require {
51public abstract SetFeature[] value() default {};
52
53public abstract SetFeature[] absent() default {};
54}
55}
56