Cloner.h

 
#ifndef ACTIVE_UTILITY_CLONABLE
#define ACTIVE_UTILITY_CLONABLE
 
#include <concepts>
#include <memory>
 
namespace active::utility {
        
    class Cloner {
    public:
        virtual ~Cloner() = default;
        virtual Cloner* clonePtr() const = 0;
    };
    
    
    template<class T>
    concept Clonable = std::is_base_of<Cloner, T>::value;
    
    
    template<class T> requires Clonable<T>
    inline auto clone(const T& item) {
        return std::unique_ptr<T>{item.clonePtr()};
    }
    
}
 
#endif  //ACTIVE_UTILITY_CLONABLE