53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
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#ifndef flags_hh_INCLUDED
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#define flags_hh_INCLUDED
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#include <type_traits>
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namespace Kakoune
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{
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template<typename Flags>
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struct WithBitOps : std::false_type {};
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template<typename Flags>
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using EnumStorageType = typename std::underlying_type<Flags>::type;
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template<typename Flags>
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using EnableIfWithBitOps = typename std::enable_if<WithBitOps<Flags>::value>::type;
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template<typename Flags, typename = EnableIfWithBitOps<Flags>>
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constexpr Flags operator|(Flags lhs, Flags rhs)
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{
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return (Flags)((EnumStorageType<Flags>) lhs | (EnumStorageType<Flags>) rhs);
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}
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template<typename Flags, typename = EnableIfWithBitOps<Flags>>
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Flags& operator|=(Flags& lhs, Flags rhs)
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{
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(EnumStorageType<Flags>&) lhs |= (EnumStorageType<Flags>) rhs;
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return lhs;
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}
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template<typename Flags, typename = EnableIfWithBitOps<Flags>>
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constexpr bool operator&(Flags lhs, Flags rhs)
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{
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return ((EnumStorageType<Flags>) lhs & (EnumStorageType<Flags>) rhs) != 0;
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}
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template<typename Flags, typename = EnableIfWithBitOps<Flags>>
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Flags& operator&=(Flags& lhs, Flags rhs)
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{
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(EnumStorageType<Flags>&) lhs &= (EnumStorageType<Flags>) rhs;
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return lhs;
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}
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template<typename Flags, typename = EnableIfWithBitOps<Flags>>
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constexpr Flags operator~(Flags lhs)
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{
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return (Flags)(~(EnumStorageType<Flags>)lhs);
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}
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}
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#endif // flags_hh_INCLUDED
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