com.google.common.collect.testing.IteratorFeature Maven / Gradle / Ivy
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/*
* 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.
*
* 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 UNMODIFIABLE =
Collections.emptySet();
/**
* A set containing all of the optional features of the {@link Iterator} and
* {@link ListIterator} interfaces.
*/
public static final Set MODIFIABLE =
Collections.unmodifiableSet(EnumSet.allOf(IteratorFeature.class));
}