static void Main(string[] args)
{
string input;
Console.WriteLine("Calculadora");
Console.Write("Operacion Infix: ");
input = Console.ReadLine();
Tokenizer(input);
string postfix = expr();
Console.WriteLine("\n conversion Postfix = {0}", postfix);
LaLista.Clear();
#region AST
Tokenizer(postfix.Replace(" ", string.Empty));
Expression AST = null;
Stack <Expression> LaPila = new Stack <Expression>();
foreach (Token ElToken in LaLista)
{
//El token es numero
if (ElToken.Tipo == TipoToken.NUM)
{
LaPila.Push(new UnaryExpression(ElToken));
}
//El token es operador
else if (ElToken.Tipo == TipoToken.OP)
{
Expression Pop1 = LaPila.Pop();
Expression Pop2 = LaPila.Pop();
Expression NuevoArbol = new BinaryExpression(ElToken, Pop2, Pop1);
LaPila.Push(NuevoArbol);
}
else if (ElToken.Tipo == TipoToken.OPEN_PARENS || ElToken.Tipo == TipoToken.CLOSING_PARENS)
{
continue;
}
}
AST = LaPila.Pop();
Console.WriteLine("\nEl resultado es: " + AST.eval());
#endregion
Console.ReadKey(true);
}
public int SumOperation(Expression l, Expression r)
{
return l.eval() + r.eval();
}
public int MultOperation(Expression l, Expression r)
{
return l.eval() * r.eval();
}
public int DivOperation(Expression l, Expression r)
{
return l.eval() / r.eval();
}
public int DiffOperation(Expression l, Expression r)
{
return l.eval() - r.eval();
}
public int DivOperation(Expression l, Expression r)
{
return(l.eval() / r.eval());
}
public int MultOperation(Expression l, Expression r)
{
return(l.eval() * r.eval());
}
public int SumOperation(Expression l, Expression r)
{
return(l.eval() + r.eval());
}