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1//===---------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===---------------------------------------------------------------------===//8 9#ifndef _LIBCPP___CSTDDEF_BYTE_H10#define _LIBCPP___CSTDDEF_BYTE_H11 12#include <__config>13#include <__fwd/byte.h>14#include <__type_traits/enable_if.h>15#include <__type_traits/is_integral.h>16 17#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)18# pragma GCC system_header19#endif20 21#if _LIBCPP_STD_VER >= 1722_LIBCPP_BEGIN_UNVERSIONED_NAMESPACE_STD23 24enum class byte : unsigned char {};25 26_LIBCPP_HIDE_FROM_ABI inline constexpr byte operator|(byte __lhs, byte __rhs) noexcept {27 return static_cast<byte>(28 static_cast<unsigned char>(static_cast<unsigned int>(__lhs) | static_cast<unsigned int>(__rhs)));29}30 31_LIBCPP_HIDE_FROM_ABI inline constexpr byte& operator|=(byte& __lhs, byte __rhs) noexcept {32 return __lhs = __lhs | __rhs;33}34 35_LIBCPP_HIDE_FROM_ABI inline constexpr byte operator&(byte __lhs, byte __rhs) noexcept {36 return static_cast<byte>(37 static_cast<unsigned char>(static_cast<unsigned int>(__lhs) & static_cast<unsigned int>(__rhs)));38}39 40_LIBCPP_HIDE_FROM_ABI inline constexpr byte& operator&=(byte& __lhs, byte __rhs) noexcept {41 return __lhs = __lhs & __rhs;42}43 44_LIBCPP_HIDE_FROM_ABI inline constexpr byte operator^(byte __lhs, byte __rhs) noexcept {45 return static_cast<byte>(46 static_cast<unsigned char>(static_cast<unsigned int>(__lhs) ^ static_cast<unsigned int>(__rhs)));47}48 49_LIBCPP_HIDE_FROM_ABI inline constexpr byte& operator^=(byte& __lhs, byte __rhs) noexcept {50 return __lhs = __lhs ^ __rhs;51}52 53_LIBCPP_HIDE_FROM_ABI inline constexpr byte operator~(byte __b) noexcept {54 return static_cast<byte>(static_cast<unsigned char>(~static_cast<unsigned int>(__b)));55}56 57template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>58_LIBCPP_HIDE_FROM_ABI constexpr byte& operator<<=(byte& __lhs, _Integer __shift) noexcept {59 return __lhs = __lhs << __shift;60}61 62template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>63_LIBCPP_HIDE_FROM_ABI constexpr byte operator<<(byte __lhs, _Integer __shift) noexcept {64 return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) << __shift));65}66 67template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>68_LIBCPP_HIDE_FROM_ABI constexpr byte& operator>>=(byte& __lhs, _Integer __shift) noexcept {69 return __lhs = __lhs >> __shift;70}71 72template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>73_LIBCPP_HIDE_FROM_ABI constexpr byte operator>>(byte __lhs, _Integer __shift) noexcept {74 return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) >> __shift));75}76 77template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>78[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Integer to_integer(byte __b) noexcept {79 return static_cast<_Integer>(__b);80}81 82_LIBCPP_END_UNVERSIONED_NAMESPACE_STD83#endif // _LIBCPP_STD_VER >= 1784 85#endif // _LIBCPP___CSTDDEF_BYTE_H86