sizable.hpp

#pragma once
 
#include <cstddef>
#include <cstdint>
#include <type_traits>
 
namespace z {
namespace core {
class sizable {
public:
    virtual ~sizable() noexcept {}
 
    virtual size_t size() const noexcept = 0;
};
 
template <typename T>
inline typename std::enable_if<std::is_base_of<z::core::sizable, T>::value>::type size(const T &object, size_t &bytes) noexcept {
    bytes = object.size();
}
 
template <typename T>
inline typename std::enable_if<!std::is_base_of<z::core::sizable, T>::value>::type size(const T &object, size_t &bytes) noexcept {
    bytes = sizeof(object);
}
} // namespace core
} // namespace z