is_decl_complete.hpp

#pragma once
 
#include <type_traits>
 
USERVER_NAMESPACE_BEGIN
 
namespace storages::postgres::utils {
 
namespace detail {
template <typename T, std::size_t = sizeof(T)>
std::true_type IsCompleteImpl(T*);
 
std::false_type IsCompleteImpl(...);
}  // namespace detail
 
template <typename T>
using IsDeclComplete = decltype(detail::IsCompleteImpl(std::declval<T*>()));
 
}  // namespace storages::postgres::utils
 
USERVER_NAMESPACE_END