#pragma once

using ItemT = int;

struct NodeT;

class ListT {
   public:
      ListT() = default;
      ListT(const ListT &) = delete;
      ListT(ListT &&) = delete;

      ListT & operator =(const ListT &) = delete;
      ListT & operator =(ListT &&) = delete;

      ~ListT();

      void PushFront(ItemT);
      void PopFront();

      size_t Size() const;

      void Home();
      bool Next();
      bool AtEnd();
      ItemT & Data();

   private:
      size_t size{0};
      NodeT * head{nullptr},
            * tail{nullptr};
      NodeT * ptr{nullptr};
};