private void Eval()
{
Stack<double> values = new Stack<double>();
PostfixValue value;
while (_postfix.Count > 0)
{
value = _postfix.Dequeue();
if (value.IsNumeric())
{
values.Push(value.Value());
}
else
{
switch (value.Operator())
{
case '+':
values.AddInPlace();
break;
case '-':
values.SubtractInPlace();
break;
case '/':
values.DivideInPlace();
break;
case '*':
values.MultiplyInPlace();
break;
case '^':
values.PowInPlace();
break;
}
}
}
if (values.Count > 1)
throw new ArgumentException("Too many values");
_postfix.Enqueue(new PostfixValue(values.Pop()));
}