61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
|
#ifndef AL_BYTE_H
|
||
|
|
#define AL_BYTE_H
|
||
|
|
|
||
|
|
#include <type_traits>
|
||
|
|
|
||
|
|
namespace al {
|
||
|
|
|
||
|
|
/* The "canonical" way to store raw byte data. Like C++17's std::byte, it's not
|
||
|
|
* treated as a character type and does not work with arithmatic ops. Only
|
||
|
|
* bitwise ops are allowed.
|
||
|
|
*/
|
||
|
|
enum class byte : unsigned char { };
|
||
|
|
|
||
|
|
template<typename T, typename std::enable_if<std::is_integral<T>::value,int>::type = 0>
|
||
|
|
inline constexpr T to_integer(al::byte b) noexcept { return T(b); }
|
||
|
|
|
||
|
|
|
||
|
|
template<typename T, typename std::enable_if<std::is_integral<T>::value,int>::type = 0>
|
||
|
|
inline constexpr al::byte operator<<(al::byte lhs, T rhs) noexcept
|
||
|
|
{ return al::byte(to_integer<unsigned int>(lhs) << rhs); }
|
||
|
|
|
||
|
|
template<typename T, typename std::enable_if<std::is_integral<T>::value,int>::type = 0>
|
||
|
|
inline constexpr al::byte operator>>(al::byte lhs, T rhs) noexcept
|
||
|
|
{ return al::byte(to_integer<unsigned int>(lhs) >> rhs); }
|
||
|
|
|
||
|
|
#define AL_DECL_OP(op) \
|
||
|
|
inline constexpr al::byte operator op (al::byte lhs, al::byte rhs) noexcept \
|
||
|
|
{ return al::byte(to_integer<unsigned int>(lhs) op to_integer<unsigned int>(rhs)); }
|
||
|
|
|
||
|
|
AL_DECL_OP(|)
|
||
|
|
AL_DECL_OP(&)
|
||
|
|
AL_DECL_OP(^)
|
||
|
|
|
||
|
|
#undef AL_DECL_OP
|
||
|
|
|
||
|
|
inline constexpr al::byte operator~(al::byte b) noexcept
|
||
|
|
{ return al::byte(~to_integer<unsigned int>(b)); }
|
||
|
|
|
||
|
|
|
||
|
|
template<typename T, typename std::enable_if<std::is_integral<T>::value,int>::type = 0>
|
||
|
|
inline al::byte& operator<<=(al::byte &lhs, T rhs) noexcept
|
||
|
|
{ lhs = lhs << rhs; return lhs; }
|
||
|
|
|
||
|
|
template<typename T, typename std::enable_if<std::is_integral<T>::value,int>::type = 0>
|
||
|
|
inline al::byte& operator>>=(al::byte &lhs, T rhs) noexcept
|
||
|
|
{ lhs = lhs >> rhs; return lhs; }
|
||
|
|
|
||
|
|
#define AL_DECL_OP(op) \
|
||
|
|
inline al::byte& operator op##= (al::byte &lhs, al::byte rhs) noexcept \
|
||
|
|
{ lhs = lhs op rhs; return lhs; }
|
||
|
|
|
||
|
|
AL_DECL_OP(|)
|
||
|
|
AL_DECL_OP(&)
|
||
|
|
AL_DECL_OP(^)
|
||
|
|
|
||
|
|
#undef AL_DECL_OP
|
||
|
|
|
||
|
|
} // namespace al
|
||
|
|
|
||
|
|
#endif /* AL_BYTE_H */
|