Pilha.cs


1:	/* Created by SharpDevelop.
2:	* User: Eduardo Rocha Monteiro ([email protected])
3:	* Date: 25/2/2005
4:	* Time: 14:25
5:	*/
6:
7:	using System;
8:
9:	namespace Compilador.Util
10:	{
11:	/// <summary>
12:	/// Description of Pilha.
13:	/// </summary>
14:	public class Pilha
15:	{
16:	private int _item;
17:	private Pilha _next;
18:	private Pilha _previous;
19:
20:	public Pilha()
21:	{
22:	_item = -1;
23:	_previous = null;
24:	_next = null;
25:
26:	}
27:	public Pilha(int a)
28:	{
29:	_item = a;
30:	_previous = null;
31:	_next = null;
32:	}
33:
34:	public Pilha Push(int a)
35:	{
36:	_next = new Pilha(a);
37:	_next._previous=this;
38:	return _next;
39:	}
40:
41:	public Pilha Pop()
42:	{
43:	Pilha p = _previous;
44:	p._next=null;
45:	return p;
46:	}
47:
48:	public int Item
49:	{
50:	get
51:	{
52:	return _item;
53:	}
54:	}
55:
56:	public void DecItem()
57:	{
58:	_item--;
59:	}
60:	}
61:	}