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Core/Misc: Enum flag v3 - allow enabling flag operations directly after enum definition when inside namespaces

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(cherry picked from commit ec87d048b4)

# Conflicts:
#	src/server/game/AuctionHouse/AuctionHouseMgr.cpp
#	src/server/game/AuctionHouse/AuctionHouseMgr.h
#	src/server/game/Entities/Object/ObjectGuid.h
#	src/server/game/Entities/Object/Updates/UpdateField.h
#	src/server/game/Entities/Object/Updates/UpdateFields.cpp
#	src/server/game/Entities/Object/Updates/UpdateFields.h
#	src/server/game/Entities/Player/CollectionMgr.cpp
#	src/server/game/Entities/Player/CollectionMgr.h
#	src/server/game/Phasing/PhaseShift.cpp
#	src/server/game/Phasing/PhaseShift.h
#	src/server/game/Phasing/PhasingHandler.cpp
This commit is contained in:
Shauren
2020-04-27 09:06:49 +02:00
committed by jackpoz
parent ab97969202
commit 013f8370a0
1 changed files with 21 additions and 16 deletions
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37
src/common/Utilities/EnumFlag.h
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@@ -20,80 +20,85 @@
#include <type_traits>
namespace EnumFlag
template<typename T>
constexpr bool IsEnumFlag(T) { return false; }
#define DEFINE_ENUM_FLAG(enumType) constexpr bool IsEnumFlag(enumType) { return true; }
namespace EnumTraits
{
template<typename T>
struct IsFlag : std::false_type { };
using IsFlag = std::integral_constant<bool, IsEnumFlag(T{})>;
}
template<typename T, std::enable_if_t<EnumFlag::IsFlag<T>::value, std::nullptr_t> = nullptr>
template<typename T, std::enable_if_t<EnumTraits::IsFlag<T>::value, std::nullptr_t> = nullptr>
inline constexpr T operator&(T left, T right)
{
return static_cast<T>(static_cast<std::underlying_type_t<T>>(left) & static_cast<std::underlying_type_t<T>>(right));
}
template<typename T, std::enable_if_t<EnumFlag::IsFlag<T>::value, std::nullptr_t> = nullptr>
template<typename T, std::enable_if_t<EnumTraits::IsFlag<T>::value, std::nullptr_t> = nullptr>
inline constexpr T& operator&=(T& left, T right)
{
return left = left & right;
}
template<typename T, std::enable_if_t<EnumFlag::IsFlag<T>::value, std::nullptr_t> = nullptr>
template<typename T, std::enable_if_t<EnumTraits::IsFlag<T>::value, std::nullptr_t> = nullptr>
inline constexpr T operator|(T left, T right)
{
return static_cast<T>(static_cast<std::underlying_type_t<T>>(left) | static_cast<std::underlying_type_t<T>>(right));
}
template<typename T, std::enable_if_t<EnumFlag::IsFlag<T>::value, std::nullptr_t> = nullptr>
template<typename T, std::enable_if_t<EnumTraits::IsFlag<T>::value, std::nullptr_t> = nullptr>
inline constexpr T& operator|=(T& left, T right)
{
return left = left | right;
}
template<typename T, std::enable_if_t<EnumFlag::IsFlag<T>::value, std::nullptr_t> = nullptr>
template<typename T, std::enable_if_t<EnumTraits::IsFlag<T>::value, std::nullptr_t> = nullptr>
inline constexpr T operator~(T value)
{
return static_cast<T>(~static_cast<std::underlying_type_t<T>>(value));
}
template<typename T>
class EnumFlag_t
class EnumFlag
{
static_assert(EnumFlag::IsFlag<T>::value, "EnumFlag_t must be used only with enums that are specify EnumFlag::IsFlag");
static_assert(EnumTraits::IsFlag<T>::value, "EnumFlag must be used only with enums that are specify EnumFlag::IsFlag");
public:
/*implicit*/ constexpr EnumFlag_t(T value) : _value(value)
/*implicit*/ constexpr EnumFlag(T value) : _value(value)
{
}
constexpr EnumFlag_t& operator&=(EnumFlag_t right)
constexpr EnumFlag& operator&=(EnumFlag right)
{
_value &= right._value;
return *this;
}
constexpr friend EnumFlag_t operator&(EnumFlag_t left, EnumFlag_t right)
constexpr friend EnumFlag operator&(EnumFlag left, EnumFlag right)
{
return left &= right;
}
constexpr EnumFlag_t& operator|=(EnumFlag_t right)
constexpr EnumFlag& operator|=(EnumFlag right)
{
_value |= right._value;
return *this;
}
constexpr friend EnumFlag_t operator|(EnumFlag_t left, EnumFlag_t right)
constexpr friend EnumFlag operator|(EnumFlag left, EnumFlag right)
{
return left |= right;
}
constexpr EnumFlag_t operator~() const
constexpr EnumFlag operator~() const
{
return static_cast<T>(~static_cast<std::underlying_type_t<T>>(_value));
}
constexpr void RemoveFlag(EnumFlag_t flag)
constexpr void RemoveFlag(EnumFlag flag)
{
_value &= ~flag._value;
}