#ifndef _TOKEN_H
 #define _TOKEN_H

 #include <string>
 #include <memory>
 
 #include "user.h"
 

 class user_token_supplier
 {
 public:

     virtual std::string token (const user_p user) = 0;

 };
 typedef std::shared_ptr<user_token_supplier> user_token_supplier_p;

 
 #endif