jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 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
29#include <AK/FlyString.h>
30
31namespace JS {
32
33class PropertyName {
34public:
35 enum class Type {
36 Invalid,
37 Number,
38 String,
39 };
40
41 PropertyName() {}
42
43 explicit PropertyName(i32 index)
44 : m_type(Type::Number)
45 , m_number(index)
46 {
47 ASSERT(m_number >= 0);
48 }
49
50 explicit PropertyName(const FlyString& string)
51 : m_type(Type::String)
52 , m_string(string)
53 {
54 }
55
56 bool is_valid() const { return m_type != Type::Invalid; }
57 bool is_number() const { return m_type == Type::Number; }
58 bool is_string() const { return m_type == Type::String; }
59
60 i32 as_number() const { return m_number; }
61 const FlyString& as_string() const { return m_string; }
62
63private:
64 Type m_type { Type::Invalid };
65 FlyString m_string;
66 i32 m_number { 0 };
67};
68
69}