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 17 package com.google.common.collect.testing.features; 18 19 import com.google.common.collect.testing.Helpers; 20 21 import java.lang.annotation.Inherited; 22 import java.lang.annotation.Retention; 23 import java.lang.annotation.RetentionPolicy; 24 import java.util.List; 25 import java.util.Set; 26 27 /** 28 * Optional features of classes derived from {@code List}. 29 * 30 * <p>This class is GWT compatible. 31 * 32 * @author George van den Driessche 33 */ 34 // Enum values use constructors with generic varargs. 35 @SuppressWarnings("unchecked") 36 public enum ListFeature implements Feature<List> { 37 SUPPORTS_SET, 38 SUPPORTS_ADD_WITH_INDEX, 39 SUPPORTS_ADD_ALL_WITH_INDEX, 40 SUPPORTS_REMOVE_WITH_INDEX, 41 42 GENERAL_PURPOSE( 43 CollectionFeature.GENERAL_PURPOSE, 44 SUPPORTS_SET, 45 SUPPORTS_ADD_WITH_INDEX, 46 SUPPORTS_ADD_ALL_WITH_INDEX, 47 SUPPORTS_REMOVE_WITH_INDEX 48 ), 49 50 /** Features supported by lists where only removal is allowed. */ 51 REMOVE_OPERATIONS( 52 CollectionFeature.REMOVE_OPERATIONS, 53 SUPPORTS_REMOVE_WITH_INDEX 54 ); 55 56 private final Set<Feature<? super List>> implied; 57 58 ListFeature(Feature<? super List> ... implied) { 59 this.implied = Helpers.copyToSet(implied); 60 } 61 62 @Override 63 public Set<Feature<? super List>> getImpliedFeatures() { 64 return implied; 65 } 66 67 @Retention(RetentionPolicy.RUNTIME) 68 @Inherited 69 @TesterAnnotation 70 public @interface Require { 71 ListFeature[] value() default {}; 72 ListFeature[] absent() default {}; 73 } 74 } 75
