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namespace Direction { constexpr uint8_t north = 1 <<0; constexpr uint8_t east = 1 << 1; } int main() { uint8_t WhereCanIGo = Direction::north | Direction::east; } |
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template<typename T = typename std::enable_if<std::is_enum<T>, T>> class EnumAsFlag { private: std::underlying_type<T>::type _val public: // Alle Operatoren und Konstruktoren }; namespace x { enum class Direction : uint8_t { north = 1 << 0, east = 1 << 1 }; } int main() { EnumAsFlag<x::Direction> WherCanIGo = x::Direction::north; } |
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#define BITOPS_ENUM(T) \ static_assert(static_cast<::std::underlying_type<T>::type>(T::None) == 0, "Enum " #T " must have \"None\" entry."); \ FORCEINLINE static constexpr bool Has(T Value, T Requirement) noexcept { return (static_cast<::std::underlying_type<T>::type>(Value) & static_cast<::std::underlying_type<T>::type>(Requirement)) != 0; } \ FORCEINLINE static constexpr T operator |(T First, T Second) noexcept { return static_cast<T>(static_cast<::std::underlying_type<T>::type>(First) | static_cast<::std::underlying_type<T>::type>(Second)); } \ FORCEINLINE static constexpr T operator ^(T First, T Second) noexcept { return static_cast<T>(static_cast<::std::underlying_type<T>::type>(First) ^ static_cast<::std::underlying_type<T>::type>(Second)); } \ FORCEINLINE static constexpr T operator &(T First, T Second) noexcept { return static_cast<T>(static_cast<::std::underlying_type<T>::type>(First) & static_cast<::std::underlying_type<T>::type>(Second)); } \ FORCEINLINE static constexpr T operator ~(T Value) noexcept { return static_cast<T>(~static_cast<::std::underlying_type<T>::type>(Value)); } \ FORCEINLINE static constexpr T operator <<(T Value, size_t Shift) noexcept { return static_cast<T>(static_cast<::std::underlying_type<T>::type>(Value) << Shift); } \ FORCEINLINE static constexpr T operator >>(T Value, size_t Shift) noexcept { return static_cast<T>(static_cast<::std::underlying_type<T>::type>(Value) >> Shift); } \ FORCEINLINE static CPP14_CONSTEXPR void operator |=(T& First, T Second) noexcept { First = static_cast<T>(static_cast<::std::underlying_type<T>::type>(First) | static_cast<::std::underlying_type<T>::type>(Second)); } \ FORCEINLINE static CPP14_CONSTEXPR void operator ^=(T& First, T Second) noexcept { First = static_cast<T>(static_cast<::std::underlying_type<T>::type>(First) ^ static_cast<::std::underlying_type<T>::type>(Second)); } \ FORCEINLINE static CPP14_CONSTEXPR void operator &=(T& First, T Second) noexcept { First = static_cast<T>(static_cast<::std::underlying_type<T>::type>(First) & static_cast<::std::underlying_type<T>::type>(Second)); } \ FORCEINLINE static CPP14_CONSTEXPR void operator <<=(T& Value, size_t Shift) noexcept { Value = static_cast<T>(static_cast<::std::underlying_type<T>::type>(Value) << Shift); } \ FORCEINLINE static CPP14_CONSTEXPR void operator >>=(T& Value, size_t Shift) noexcept { Value = static_cast<T>(static_cast<::std::underlying_type<T>::type>(Value) >> Shift); } \ FORCEINLINE static size_t BitScanReverse(T Value) noexcept { return ::Diverse::BitScanReverse(static_cast<::std::underlying_type<T>::type>(Value)); } \ FORCEINLINE static size_t BitScanForward(T Value) noexcept { return ::Diverse::BitScanForward(static_cast<::std::underlying_type<T>::type>(Value)); } \ FORCEINLINE static size_t CountSetBits(T Value) noexcept { return ::Diverse::CountSetBits(static_cast<::std::underlying_type<T>::type>(Value)); } |
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