1 /*
2  * Copyright (C) 2013 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.testing.google;
18 
19 import com.google.common.annotations.GwtCompatible;
20 import com.google.common.collect.Multimap;
21 import com.google.common.collect.testing.Helpers;
22 import com.google.common.collect.testing.features.Feature;
23 import com.google.common.collect.testing.features.TesterAnnotation;
24 
25 import java.lang.annotation.Inherited;
26 import java.lang.annotation.Retention;
27 import java.lang.annotation.RetentionPolicy;
28 import java.util.Set;
29 
30 /**
31  * Optional features of classes derived from {@code Multimap}.
32  *
33  * @author Louis Wasserman
34  */
35 // Enum values use constructors with generic varargs.
36 @SuppressWarnings("unchecked")
37 @GwtCompatible
38 public enum MultimapFeature implements Feature<Multimap> {
39   VALUE_COLLECTIONS_SUPPORT_ITERATOR_REMOVE;
40 
41   private final Set<Feature<? super Multimap>> implied;
42 
MultimapFeature(Feature<? super Multimap> .... implied)43   MultimapFeature(Feature<? super Multimap> ... implied) {
44     this.implied = Helpers.copyToSet(implied);
45   }
46 
47   @Override
getImpliedFeatures()48   public Set<Feature<? super Multimap>> getImpliedFeatures() {
49     return implied;
50   }
51 
52   @Retention(RetentionPolicy.RUNTIME)
53   @Inherited
54   @TesterAnnotation
55   public @interface Require {
value()56     public abstract MultimapFeature[] value() default {};
absent()57     public abstract MultimapFeature[] absent() default {};
58   }
59 }
60