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/*
* Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Badge.h>
#include <AK/DistinctNumeric.h>
namespace AK {
template<typename T>
struct ArbitrarySizedEnum : public T {
using T::T;
consteval ArbitrarySizedEnum(T v)
: T(v)
{
}
constexpr ArbitrarySizedEnum(T v, Badge<ArbitrarySizedEnum<T>>)
: T(v)
{
}
template<Integral X>
[[nodiscard]] consteval ArbitrarySizedEnum<T> operator<<(X other) const
{
return T(this->value() << other);
}
template<Integral X>
constexpr ArbitrarySizedEnum<T>& operator<<=(X other)
{
this->value() <<= other;
return *this;
}
template<Integral X>
[[nodiscard]] consteval ArbitrarySizedEnum<T> operator>>(X other) const
{
return T(this->value() >> other);
}
template<Integral X>
constexpr ArbitrarySizedEnum<T>& operator>>=(X other)
{
this->value() >>= other;
return *this;
}
template<Integral X>
[[nodiscard]] constexpr bool operator==(X other) const
{
return this->value() == T(other);
}
[[nodiscard]] constexpr bool operator==(ArbitrarySizedEnum<T> const& other) const
{
return this->value() == other.value();
}
// NOTE: The following operators mirror AK_ENUM_BITWISE_OPERATORS.
[[nodiscard]] constexpr ArbitrarySizedEnum<T> operator|(ArbitrarySizedEnum<T> const& other) const
{
return { T(this->value() | other.value()), Badge<ArbitrarySizedEnum<T>> {} };
}
[[nodiscard]] constexpr ArbitrarySizedEnum<T> operator&(ArbitrarySizedEnum<T> const& other) const
{
return { T(this->value() & other.value()), Badge<ArbitrarySizedEnum<T>> {} };
}
[[nodiscard]] constexpr ArbitrarySizedEnum<T> operator^(ArbitrarySizedEnum<T> const& other) const
{
return { T(this->value() ^ other.value()), Badge<ArbitrarySizedEnum<T>> {} };
}
[[nodiscard]] constexpr ArbitrarySizedEnum<T> operator~() const
{
return { T(~this->value()), Badge<ArbitrarySizedEnum<T>> {} };
}
constexpr ArbitrarySizedEnum<T>& operator|=(ArbitrarySizedEnum<T> const& other)
{
this->value() |= other.value();
return *this;
}
constexpr ArbitrarySizedEnum<T>& operator&=(ArbitrarySizedEnum<T> const& other)
{
this->value() &= other.value();
return *this;
}
constexpr ArbitrarySizedEnum<T>& operator^=(ArbitrarySizedEnum<T> const& other)
{
this->value() ^= other.value();
return *this;
}
[[nodiscard]] constexpr bool has_flag(ArbitrarySizedEnum<T> const& mask) const
{
return (*this & mask) == mask;
}
[[nodiscard]] constexpr bool has_any_flag(ArbitrarySizedEnum<T> const& mask) const
{
return (*this & mask) != 0u;
}
};
#define AK_MAKE_ARBITRARY_SIZED_ENUM(EnumName, T, ...) \
namespace EnumName { \
using EnumName = ArbitrarySizedEnum<DistinctNumeric<T, struct __##EnumName##Tag, AK::DistinctNumericFeature::Comparison>>; \
using Type = EnumName; \
using UnderlyingType = T; \
inline constexpr static EnumName __VA_ARGS__; \
}
}
#if USING_AK_GLOBALLY
using AK::ArbitrarySizedEnum;
#endif
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