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
10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
11 * express or implied. See the License for the specific language governing permissions and
12 * limitations under the License.
13 */
14
15package com.google.common.collect;
16
17import com.google.common.annotations.GwtCompatible;
18
19/**
20 * A side of a binary search tree node, used to index its children.
21 *
22 * @author Louis Wasserman
23 */
24@GwtCompatible
25enum BstSide {
26  LEFT {
27    @Override
28    public BstSide other() {
29      return RIGHT;
30    }
31  },
32  RIGHT {
33    @Override
34    public BstSide other() {
35      return LEFT;
36    }
37  };
38
39  abstract BstSide other();
40}
41