mirror of https://github.com/AxioDL/metaforce.git
71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
#pragma once
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#include <type_traits>
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namespace metaforce {
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template <typename BitType>
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class Flags {
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public:
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using MaskType = std::underlying_type_t<BitType>;
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// constructors
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constexpr Flags() noexcept : m_mask(0) {}
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constexpr Flags(BitType bit) noexcept : m_mask(static_cast<MaskType>(bit)) {}
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constexpr Flags(Flags<BitType> const& rhs) noexcept : m_mask(rhs.m_mask) {}
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constexpr explicit Flags(MaskType flags) noexcept : m_mask(flags) {}
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[[nodiscard]] constexpr bool IsSet(Flags<BitType> const bit) const noexcept { return bool(*this & bit); }
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// relational operators
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bool operator==(Flags<BitType> const& rhs) const noexcept { return m_mask == rhs.m_mask; }
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// logical operator
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constexpr bool operator!() const noexcept { return !m_mask; }
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// bitwise operators
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constexpr Flags<BitType> operator&(Flags<BitType> const& rhs) const noexcept {
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return Flags<BitType>(m_mask & rhs.m_mask);
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}
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constexpr Flags<BitType> operator|(Flags<BitType> const& rhs) const noexcept {
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return Flags<BitType>(m_mask | rhs.m_mask);
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}
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constexpr Flags<BitType> operator^(Flags<BitType> const& rhs) const noexcept {
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return Flags<BitType>(m_mask ^ rhs.m_mask);
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}
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// assignment operators
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constexpr Flags<BitType>& operator=(Flags<BitType> const& rhs) noexcept {
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m_mask = rhs.m_mask;
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return *this;
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}
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constexpr Flags<BitType>& operator|=(Flags<BitType> const& rhs) noexcept {
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m_mask |= rhs.m_mask;
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return *this;
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}
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constexpr Flags<BitType>& operator&=(Flags<BitType> const& rhs) noexcept {
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m_mask &= rhs.m_mask;
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return *this;
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}
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constexpr Flags<BitType>& operator^=(Flags<BitType> const& rhs) noexcept {
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m_mask ^= rhs.m_mask;
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return *this;
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}
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// cast operators
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explicit constexpr operator bool() const noexcept { return m_mask != 0; }
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explicit constexpr operator MaskType() const noexcept { return m_mask; }
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private:
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MaskType m_mask;
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};
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} // namespace metaforce
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