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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29namespace VT {
30
31class Position {
32public:
33 Position() {}
34 Position(int row, int column)
35 : m_row(row)
36 , m_column(column)
37 {
38 }
39
40 bool is_valid() const { return m_row >= 0 && m_column >= 0; }
41 int row() const { return m_row; }
42 int column() const { return m_column; }
43
44 bool operator<(const Position& other) const
45 {
46 return m_row < other.m_row || (m_row == other.m_row && m_column < other.m_column);
47 }
48
49 bool operator<=(const Position& other) const
50 {
51 return *this < other || *this == other;
52 }
53
54 bool operator>=(const Position& other) const
55 {
56 return !(*this < other);
57 }
58
59 bool operator==(const Position& other) const
60 {
61 return m_row == other.m_row && m_column == other.m_column;
62 }
63
64 bool operator!=(const Position& other) const
65 {
66 return !(*this == other);
67 }
68
69private:
70 int m_row { -1 };
71 int m_column { -1 };
72};
73
74}