forked from SerenityOS/serenity
-
Notifications
You must be signed in to change notification settings - Fork 0
/
EnumBits.h
101 lines (96 loc) 路 6.28 KB
/
EnumBits.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
/*
* Copyright (c) 2021, Brian Gianforcaro <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "AK/StdLibExtras.h"
// Enables bitwise operators for the specified Enum type.
//
#define AK_ENUM_BITWISE_OPERATORS(Enum) \
_AK_ENUM_BITWISE_OPERATORS_INTERNAL(Enum, )
// Enables bitwise operators for the specified Enum type, this
// version is meant for use on enums which are private to the
// containing type.
//
#define AK_ENUM_BITWISE_FRIEND_OPERATORS(Enum) \
_AK_ENUM_BITWISE_OPERATORS_INTERNAL(Enum, friend)
#define _AK_ENUM_BITWISE_OPERATORS_INTERNAL(Enum, Prefix) \
\
[[nodiscard]] Prefix constexpr inline Enum operator|(Enum lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Enum>( \
static_cast<Type>(lhs) | static_cast<Type>(rhs)); \
} \
\
[[nodiscard]] Prefix constexpr inline Enum operator&(Enum lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Enum>( \
static_cast<Type>(lhs) & static_cast<Type>(rhs)); \
} \
\
[[nodiscard]] Prefix constexpr inline Enum operator^(Enum lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Enum>( \
static_cast<Type>(lhs) ^ static_cast<Type>(rhs)); \
} \
\
[[nodiscard]] Prefix constexpr inline Enum operator~(Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Enum>( \
~static_cast<Type>(rhs)); \
} \
\
Prefix constexpr inline Enum& operator|=(Enum& lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
lhs = static_cast<Enum>( \
static_cast<Type>(lhs) | static_cast<Type>(rhs)); \
return lhs; \
} \
\
Prefix constexpr inline Enum& operator&=(Enum& lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
lhs = static_cast<Enum>( \
static_cast<Type>(lhs) & static_cast<Type>(rhs)); \
return lhs; \
} \
\
Prefix constexpr inline Enum& operator^=(Enum& lhs, Enum rhs) \
{ \
using Type = UnderlyingType<Enum>; \
lhs = static_cast<Enum>( \
static_cast<Type>(lhs) ^ static_cast<Type>(rhs)); \
return lhs; \
} \
\
Prefix constexpr inline bool has_flag(Enum value, Enum mask) \
{ \
using Type = UnderlyingType<Enum>; \
return static_cast<Type>(value & mask) != 0; \
}