mirror of https://gitlab.freedesktop.org/mesa/mesa
75 lines
3.2 KiB
C++
75 lines
3.2 KiB
C++
/*
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* Copyright © 2020 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifdef __cplusplus
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#include "macros.h"
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#include <type_traits>
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// some enum helpers
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#define MESA_DEFINE_CPP_ENUM_BINARY_OPERATOR(Enum, op) \
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extern "C++" { \
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UNUSED static constexpr \
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Enum operator op (Enum a, Enum b) \
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{ \
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using IntType = std::underlying_type_t<Enum>; \
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IntType ua = static_cast<IntType>(a); \
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IntType ub = static_cast<IntType>(b); \
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return static_cast<Enum>(ua op ub); \
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} \
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\
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UNUSED static constexpr \
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Enum& operator op##= (Enum &a, Enum b) \
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{ \
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using IntType = std::underlying_type_t<Enum>; \
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IntType ua = static_cast<IntType>(a); \
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IntType ub = static_cast<IntType>(b); \
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ua op##= ub; \
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a = static_cast<Enum>(ua); \
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return a; \
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} \
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}
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#define MESA_DEFINE_CPP_ENUM_UNARY_OPERATOR(Enum, op) \
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extern "C++" { \
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UNUSED static constexpr \
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Enum operator op (Enum a) \
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{ \
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using IntType = std::underlying_type_t<Enum>; \
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IntType ua = static_cast<IntType>(a); \
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return static_cast<Enum>(op ua); \
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} \
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}
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#define MESA_DEFINE_CPP_ENUM_BITFIELD_OPERATORS(Enum) \
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MESA_DEFINE_CPP_ENUM_BINARY_OPERATOR(Enum, |) \
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MESA_DEFINE_CPP_ENUM_BINARY_OPERATOR(Enum, &) \
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MESA_DEFINE_CPP_ENUM_BINARY_OPERATOR(Enum, ^) \
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MESA_DEFINE_CPP_ENUM_UNARY_OPERATOR(Enum, ~)
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#else
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#define MESA_DEFINE_CPP_ENUM_BITFIELD_OPERATORS(Enum)
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#endif
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