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added util Flags

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This commit is contained in:
Michele Caini 2016-07-19 12:38:32 +02:00
parent 53e6ac942a
commit 286072a3c0
1 changed files with 31 additions and 0 deletions
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31
src/uvw/util.hpp
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@ -49,6 +49,37 @@ const IpTraits<IPv6>::NameFuncType IpTraits<IPv6>::NameFunc = uv_ip6_name;
}
template<typename E>
class Flags final {
using InnerType = typename std::underlying_type<E>::type;
constexpr InnerType toInnerType(E flag) const noexcept { return static_cast<InnerType>(flag); }
public:
using Type = InnerType;
constexpr Flags(E flag) noexcept: flags{toInnerType(flag)} { }
constexpr Flags(Type f): flags(f) { }
constexpr Flags(const Flags &f) noexcept: flags{f.flags} { }
constexpr Flags(Flags &&f) noexcept: flags{std::move(f.flags)} { }
~Flags() noexcept { static_assert(std::is_enum<E>::value, "!"); }
constexpr Flags operator|(const Flags& f) const noexcept { return Flags(flags | f.flags); }
constexpr Flags operator|(E flag) const noexcept { return Flags(flags | toInnerType(flag)); }
constexpr Flags operator&(const Flags& f) const noexcept { return Flags(flags & f.flags); }
constexpr Flags operator&(E flag) const noexcept { return Flags(flags & toInnerType(flag)); }
constexpr operator bool() const noexcept { return !(flags == InnerType{}); }
constexpr operator Type() const noexcept { return flags; }
private:
InnerType flags;
};
struct FileDescriptor {
using Type = uv_file;