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#pragma once
#include <type_traits>
namespace util {
template<typename T>
bool FlagSet(T flags, T value) {
return (flags & value) == value;
}
} // namespace util
template<typename T>
struct Bitwise {
static const bool enable = false;
};
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator|(T a, T b) {
using x = typename std::underlying_type<T>::type;
return static_cast<T>(static_cast<x>(a) | static_cast<x>(b));
}
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator|=(T &a, T b) {
using x = typename std::underlying_type<T>::type;
a = static_cast<T>(static_cast<x>(a) | static_cast<x>(b));
return a;
}
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator&(T a, T b) {
using x = typename std::underlying_type<T>::type;
return static_cast<T>(static_cast<x>(a) & static_cast<x>(b));
}
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator&=(T &a, T b) {
using x = typename std::underlying_type<T>::type;
a = static_cast<T>(static_cast<x>(a) & static_cast<x>(b));
return a;
}
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator~(T a) {
return static_cast<T>(~static_cast<typename std::underlying_type<T>::type>(a));
}
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