1/*
2 * Copyright (C) 2011 The Guava Authors
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5 * in compliance with the License. You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the License
10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11 * or implied. See the License for the specific language governing permissions and limitations under
12 * the License.
13 */
14
15package com.google.common.collect;
16
17import com.google.common.annotations.Beta;
18import com.google.common.annotations.GwtCompatible;
19
20/**
21 * Indicates whether an endpoint of some range is contained in the range itself ("closed") or not
22 * ("open"). If a range is unbounded on a side, it is neither open nor closed on that side; the
23 * bound simply does not exist.
24 *
25 * @since 10.0
26 */
27@Beta
28@GwtCompatible
29public enum BoundType {
30  /**
31   * The endpoint value <i>is not</i> considered part of the set ("exclusive").
32   */
33  OPEN,
34
35  /**
36   * The endpoint value <i>is</i> considered part of the set ("inclusive").
37   */
38  CLOSED;
39
40  /**
41   * Returns the bound type corresponding to a boolean value for inclusivity.
42   */
43  static BoundType forBoolean(boolean inclusive) {
44    return inclusive ? CLOSED : OPEN;
45  }
46}
47