using System;
using System.Collections.Generic;
using System.Text;

namespace StgSharp.Logic
{
    public class LinkedList<T> where T: INode
    {
        private LinkedListNode<T> _head;
        private LinkedListNode<T> _tail;

        private LinkedListNode<T> _cache;

        public T Head
        {
            get { return _head._this; }
            set { _head = new LinkedListNode<T>(value); }
        }

        public T Tail
        {
            get { return _tail._this; }
            set { _tail = new LinkedListNode<T>(value); }
        }


        public void Add(T t)
        {
            if (_head != default(LinkedListNode<T>))
            {
                Head = t;
            }
            else
            {
                _cache = new LinkedListNode<T>(t);
                _tail._next = _cache;
                _cache._previous = _tail;
                _tail = _cache;
            }
        }

        public void RemoveTail()
        {
            if (_tail==default(LinkedListNode<T>))
            {

            }
            else
            {
                _cache = _tail;
                _tail = _cache._previous;
                _cache._previous = default(LinkedListNode<T>);
            }
        }



        
    }
}