1/*
2 * Copyright © 2020 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#ifdef __cplusplus
25
26#include "macros.h"
27#include <type_traits>
28
29// some enum helpers
30#define MESA_DEFINE_CPP_ENUM_BINARY_OPERATOR(Enum, op) \
31extern "C++" {                                         \
32UNUSED static constexpr                                \
33Enum operator op (Enum a, Enum b)                      \
34{                                                      \
35   using IntType = std::underlying_type_t<Enum>;       \
36   IntType ua = static_cast<IntType>(a);               \
37   IntType ub = static_cast<IntType>(b);               \
38   return static_cast<Enum>(ua op ub);                 \
39}                                                      \
40                                                       \
41UNUSED static constexpr                                \
42Enum& operator op##= (Enum &a, Enum b)                 \
43{                                                      \
44   using IntType = std::underlying_type_t<Enum>;       \
45   IntType ua = static_cast<IntType>(a);               \
46   IntType ub = static_cast<IntType>(b);               \
47   ua op##= ub;                                        \
48   a = static_cast<Enum>(ua);                          \
49   return a;                                           \
50}                                                      \
51}
52
53#define MESA_DEFINE_CPP_ENUM_UNARY_OPERATOR(Enum, op) \
54extern "C++" {                                        \
55UNUSED static constexpr                               \
56Enum operator op (Enum a)                             \
57{                                                     \
58   using IntType = std::underlying_type_t<Enum>;      \
59   IntType ua = static_cast<IntType>(a);              \
60   return static_cast<Enum>(op ua);                   \
61}                                                     \
62}
63
64#define MESA_DEFINE_CPP_ENUM_BITFIELD_OPERATORS(Enum) \
65MESA_DEFINE_CPP_ENUM_BINARY_OPERATOR(Enum, |)         \
66MESA_DEFINE_CPP_ENUM_BINARY_OPERATOR(Enum, &)         \
67MESA_DEFINE_CPP_ENUM_BINARY_OPERATOR(Enum, ^)         \
68MESA_DEFINE_CPP_ENUM_UNARY_OPERATOR(Enum, ~)
69
70#else
71
72#define MESA_DEFINE_CPP_ENUM_BITFIELD_OPERATORS(Enum)
73
74#endif
75