List.h

/*
 * List.h
 *
 */

#pragma once
#include <iostream>
#include <string>
class List {
private:
    class Node {
    public:
        Node() : data(0), next(nullptr), previous(nullptr){}
        Node(int data) : data(data), next(nullptr), previous(nullptr){}
        Node(const Node& node) {}
        ~Node();
        int data;
        Node* next;
        Node* previous;
    };
    Node* head;
    Node* tail;
    int n; // Rozmiar listy
public:
    List() :
        head(nullptr), tail(nullptr), n(0) {
    }
    List(const List& list) {}
    virtual ~List();

    void push_front(int object);
    void pop_front();
    void push_back(int obiekt);
    void pop_back();
    void insert(int index, int object);
    void erase(int index);
    void swap(int index1, int index2);
    int size();
    int get_index_of(const int object);
    Node& get_node_ref(int index);
    Node* get_node_ptr(int index);
    void save_to_file(std::string file_name);
    void load_from_file(std::string file_name);

    // Operatory
    //bool operator==(const List &L);
    //List& operator=(const List &L);
    int& operator[](int index);
};