variant_size.hpp

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//
// Created by YongGyu Lee on 02/01/24.
//
 
#ifndef VCCC_VARIANT_VARIANT_SIZE_HPP
#define VCCC_VARIANT_VARIANT_SIZE_HPP
 
#include <type_traits>
 
#include "vccc/__core/inline_or_static.hpp"
 
namespace vccc {
 
 
template<typename... T>
class variant;
 
template<typename T>
struct variant_size;
 
template<typename... Ts>
struct variant_size<variant<Ts...>> : std::integral_constant<std::size_t, sizeof...(Ts)> {};
 
template<typename T>
struct variant_size<const T> : std::integral_constant<std::size_t, variant_size<T>::value> {};
 
template<typename T>
VCCC_INLINE_OR_STATIC constexpr std::size_t variant_size_v = variant_size<T>::value;
 
 
} // namespace vccc
 
#endif // VCCC_VARIANT_VARIANT_SIZE_HPP