#ifndef _LIST_H_
#define _LIST_H_

#include <iostream>
#include <string>

// TDDE18 - Lab 6 - Templates
// Header file


template <typename T>
class List
{
public:
  List();
  ~List() { delete first; }

  void insert(T const& d);
  
  List(List const&);
  List(List&&);
  List& operator=(List const&);
  List& operator=(List&&);
    
private:

  class Link
  {
  public:
    Link(T const& d, Link* n)
      : data(d), next(n) {}
    ~Link() { delete next; }
    
    friend class List;

    static Link* clone(Link const*);
    
  private:
    
    T data;
    Link* next;
  };
  
  Link* first;
  
public:

  using value_type = T;

  class Iterator
  {
    friend List;
    public:
      Iterator& operator++();
      T& operator*() const;

      bool operator!=(Iterator const& other) const;
      bool operator==(Iterator const& other) const;
      
    private:
      // Private constructor
      Iterator(Link* ln);

      Link* l;
  };

  Iterator begin() const;
  Iterator end() const;
};

template <typename T>
std::ostream& operator<<(std::ostream& os, const List<T>& lst);

#include "list.tcc"
#endif