| /* |
| * Copyright (C) 2008 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.common.collect.testing; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import java.util.Collections; |
| import java.util.EnumSet; |
| import java.util.Iterator; |
| import java.util.ListIterator; |
| import java.util.Set; |
| |
| /** |
| * A method supported by implementations of the {@link Iterator} or {@link ListIterator} interface. |
| * |
| * <p>This enum is GWT compatible. |
| * |
| * @author Chris Povirk |
| */ |
| @GwtCompatible |
| public enum IteratorFeature { |
| /** Support for {@link Iterator#remove()}. */ |
| SUPPORTS_REMOVE, |
| /** |
| * Support for {@link ListIterator#add(Object)}; ignored for plain {@link Iterator} |
| * implementations. |
| */ |
| SUPPORTS_ADD, |
| /** |
| * Support for {@link ListIterator#set(Object)}; ignored for plain {@link Iterator} |
| * implementations. |
| */ |
| SUPPORTS_SET; |
| |
| /** |
| * A set containing none of the optional features of the {@link Iterator} or {@link ListIterator} |
| * interfaces. |
| */ |
| public static final Set<IteratorFeature> UNMODIFIABLE = Collections.emptySet(); |
| |
| /** |
| * A set containing all of the optional features of the {@link Iterator} and {@link ListIterator} |
| * interfaces. |
| */ |
| public static final Set<IteratorFeature> MODIFIABLE = |
| Collections.unmodifiableSet(EnumSet.allOf(IteratorFeature.class)); |
| } |