opcua::IsBitmaskEnum< T > Struct Template Reference

#include <bitmask.hpp>

Inheritance diagram for opcua::IsBitmaskEnum< T >:

Detailed Description

template<typename T>
struct opcua::IsBitmaskEnum< T >

Trait to define an enum (class) as a bitmask and allow bitwise operations.

// define enum (class)
enum class Access {
    Read  = 1 << 0,
    Write = 1 << 1,
};
 
// allow bitwise operations
// 1. with template specialization of IsBitmaskEnum trait
template <>
struct IsBitmaskEnum<Access> : std::true_type {};
// 2. with overload of function isBitmaskEnum
constexpr std::true_type isBitmaskEnum(Access);
 
// use bitwise operations
Access mask = Access::Read | Access::Write;

Definition at line 44 of file bitmask.hpp.

Related Symbols
(Note that these are not member symbols.)
template<typename T >
constexpr std::enable_if_t< IsBitmaskEnum< T >::value, T >	operator& (T lhs, T rhs) noexcept
template<typename T >
constexpr std::enable_if_t< IsBitmaskEnum< T >::value, T >	operator| (T lhs, T rhs) noexcept
template<typename T >
constexpr std::enable_if_t< IsBitmaskEnum< T >::value, T >	operator^ (T lhs, T rhs) noexcept
template<typename T >
constexpr std::enable_if_t< IsBitmaskEnum< T >::value, T >	operator~ (T rhs) noexcept
template<typename T >
constexpr std::enable_if_t< IsBitmaskEnum< T >::value, T >	operator|= (T &lhs, T rhs) noexcept
template<typename T >
constexpr std::enable_if_t< IsBitmaskEnum< T >::value, T >	operator&= (T &lhs, T rhs) noexcept
template<typename T >
constexpr std::enable_if_t< IsBitmaskEnum< T >::value, T >	operator^= (T &lhs, T rhs) noexcept