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
|
/*
* Copyright (C) 2019 Apple Inc. 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 APPLE INC. ``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 APPLE INC. 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 <type_traits>
#define OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, op, enableExpression) \
template<typename T> \
constexpr auto operator op(enumName enumEntry, T value) -> std::enable_if_t<(enableExpression), T> \
{ \
return static_cast<T>(enumEntry) op value; \
} \
\
template<typename T> \
constexpr auto operator op(T value, enumName enumEntry) -> std::enable_if_t<(enableExpression), T> \
{ \
return value op static_cast<T>(enumEntry); \
} \
#define OVERLOAD_MATH_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, +, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, -, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, *, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, /, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, %, enableExpression) \
#define OVERLOAD_MATH_OPERATORS_FOR_ENUM_CLASS_WITH_INTEGRALS(enumName) OVERLOAD_MATH_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, std::is_integral_v<T>)
#define OVERLOAD_RELATIONAL_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, ==, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, !=, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, <, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, <=, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, >, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, >=, enableExpression) \
#define OVERLOAD_RELATIONAL_OPERATORS_FOR_ENUM_CLASS_WITH_INTEGRALS(enumName) OVERLOAD_RELATIONAL_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, std::is_integral_v<T>)
#define OVERLOAD_BITWISE_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, |, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, &, enableExpression) \
OVERLOAD_OPERATOR_FOR_ENUM_CLASS_WHEN(enumName, ^, enableExpression) \
#define OVERLOAD_BITWISE_OPERATORS_FOR_ENUM_CLASS_WITH_INTERGRALS(enumName) OVERLOAD_BITWISE_OPERATORS_FOR_ENUM_CLASS_WHEN(enumName, std::is_integral_v<T>)
|
