001/*
002 * Copyright (C) 2013 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.google.common.collect.testing.google;
018
019import com.google.common.annotations.GwtCompatible;
020import com.google.common.collect.Multimap;
021import com.google.common.collect.testing.Helpers;
022import com.google.common.collect.testing.features.Feature;
023import com.google.common.collect.testing.features.TesterAnnotation;
024import java.lang.annotation.Inherited;
025import java.lang.annotation.Retention;
026import java.lang.annotation.RetentionPolicy;
027import java.util.Set;
028
029/**
030 * Optional features of classes derived from {@code Multimap}.
031 *
032 * @author Louis Wasserman
033 */
034@SuppressWarnings("rawtypes") // maybe avoidable if we rework the whole package?
035@GwtCompatible
036public enum MultimapFeature implements Feature<Multimap> {
037  VALUE_COLLECTIONS_SUPPORT_ITERATOR_REMOVE;
038
039  private final Set<Feature<? super Multimap>> implied;
040
041  MultimapFeature(Feature<? super Multimap>... implied) {
042    this.implied = Helpers.copyToSet(implied);
043  }
044
045  @Override
046  public Set<Feature<? super Multimap>> getImpliedFeatures() {
047    return implied;
048  }
049
050  @Retention(RetentionPolicy.RUNTIME)
051  @Inherited
052  @TesterAnnotation
053  public @interface Require {
054    public abstract MultimapFeature[] value() default {};
055
056    public abstract MultimapFeature[] absent() default {};
057  }
058}