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Patch kindly provided by Ali on #aarch64 on Discord. Co-authored-by: Ali Mohammad Pur <mpfard@serenityos.org>
130 lines
3.7 KiB
C++
130 lines
3.7 KiB
C++
/*
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* Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
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* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Badge.h>
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#include <AK/DistinctNumeric.h>
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namespace AK {
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template<typename T>
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struct ArbitrarySizedEnum : public T {
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using T::T;
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consteval ArbitrarySizedEnum(T v)
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: T(v)
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{
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}
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constexpr ArbitrarySizedEnum(T v, Badge<ArbitrarySizedEnum<T>>)
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: T(v)
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{
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}
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template<Integral X>
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[[nodiscard]] consteval ArbitrarySizedEnum<T> operator<<(X other) const
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{
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return T(this->value() << other);
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}
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template<Integral X>
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constexpr ArbitrarySizedEnum<T>& operator<<=(X other)
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{
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this->value() <<= other;
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return *this;
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}
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template<Integral X>
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[[nodiscard]] consteval ArbitrarySizedEnum<T> operator>>(X other) const
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{
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return T(this->value() >> other);
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}
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template<Integral X>
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constexpr ArbitrarySizedEnum<T>& operator>>=(X other)
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{
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this->value() >>= other;
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return *this;
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}
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template<Integral X>
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[[nodiscard]] constexpr bool operator==(X other) const
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{
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return this->value() == T(other);
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}
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[[nodiscard]] constexpr bool operator==(ArbitrarySizedEnum<T> const& other) const
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{
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return this->value() == other.value();
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}
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// NOTE: The following operators mirror AK_ENUM_BITWISE_OPERATORS.
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[[nodiscard]] constexpr ArbitrarySizedEnum<T> operator|(ArbitrarySizedEnum<T> const& other) const
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{
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return { T(this->value() | other.value()), Badge<ArbitrarySizedEnum<T>> {} };
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}
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[[nodiscard]] constexpr ArbitrarySizedEnum<T> operator&(ArbitrarySizedEnum<T> const& other) const
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{
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return { T(this->value() & other.value()), Badge<ArbitrarySizedEnum<T>> {} };
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}
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[[nodiscard]] constexpr ArbitrarySizedEnum<T> operator^(ArbitrarySizedEnum<T> const& other) const
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{
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return { T(this->value() ^ other.value()), Badge<ArbitrarySizedEnum<T>> {} };
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}
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[[nodiscard]] constexpr ArbitrarySizedEnum<T> operator~() const
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{
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return { T(~this->value()), Badge<ArbitrarySizedEnum<T>> {} };
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}
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constexpr ArbitrarySizedEnum<T>& operator|=(ArbitrarySizedEnum<T> const& other)
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{
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this->value() |= other.value();
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return *this;
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}
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constexpr ArbitrarySizedEnum<T>& operator&=(ArbitrarySizedEnum<T> const& other)
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{
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this->value() &= other.value();
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return *this;
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}
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constexpr ArbitrarySizedEnum<T>& operator^=(ArbitrarySizedEnum<T> const& other)
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{
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this->value() ^= other.value();
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return *this;
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}
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[[nodiscard]] constexpr bool has_flag(ArbitrarySizedEnum<T> const& mask) const
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{
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return (*this & mask) == mask;
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}
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[[nodiscard]] constexpr bool has_any_flag(ArbitrarySizedEnum<T> const& mask) const
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{
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return (*this & mask) != 0u;
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}
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};
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#define AK_MAKE_ARBITRARY_SIZED_ENUM(EnumName, T, ...) \
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namespace EnumName { \
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using EnumName = ArbitrarySizedEnum<DistinctNumeric<T, struct __##EnumName##Tag, AK::DistinctNumericFeature::Comparison>>; \
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using Type = EnumName; \
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using UnderlyingType = T; \
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inline constexpr static EnumName __VA_ARGS__; \
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}
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}
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#if USING_AK_GLOBALLY
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using AK::ArbitrarySizedEnum;
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#endif
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