#ifndef KRYP_H_
#define KRYP_H_

#include <string>

using Kryp_Data = std::string;

class Kryp
{
public:
  Kryp();
  ~Kryp();
  
  Kryp(Kryp const&) = delete;
  Kryp(Kryp&&) = delete;
  Kryp& operator=(Kryp const&) = delete;
  Kryp& operator=(Kryp&&) = delete;

  bool empty() const;
  void push(Kryp_Data const&);
  Kryp_Data pop();
  
private:

  class Element
  {
  public:
    Element(Kryp_Data const& i, Element* n = nullptr)
      : data(i), next(n) {}
    ~Element() { delete next; }
    
    Element(Element const&) = delete;
    Element(Element&&) = delete;
    
    Element& operator=(Element const&) = delete;
    Element& operator=(Element&&) = delete;
    
    Kryp_Data data;
    Element* next;
  };

  Element* first;

};

#endif