private void Operate()
{
double num1;
double num2;
double result;
while (queue.Count >= 1)
{
calcobject = queue.Dequeue();
switch (calcobject.Type)
{
case "Number":
stack.Push(calcobject);
break;
case "Operator":
num2 = StringToDouble(stack.Pop().Value);
num1 = StringToDouble(stack.Pop().Value);
result = Operations.operations[calcobject.Value](num1, num2);
stack.Push(Parser.CreateCalcObject("Number", result.ToString()));
break;
default:
break;
}
}
calcobject = stack.Pop();
}
private static void OperatorsOrdering(CalcObject calcObject)
{
if (calcObject.Value == ")")
{
while (notForNumbers.Peek().Value != "(")
{
result.Enqueue(notForNumbers.Pop());
}
notForNumbers.Pop();
}
else
{
while (true)
{
int orderForCalcObject = Operations.priority[calcObject.Value];
int orderForPeekValue = Operations.priority[notForNumbers.Peek().Value];
if (orderForCalcObject >= orderForPeekValue || notForNumbers.Peek().Value == "(")
{
notForNumbers.Push(calcObject);
break;
}
else
{
result.Enqueue(notForNumbers.Pop());
notForNumbers.Push(calcObject);
break;
}
}
}
}
public string Calculate(string expression)
{
string result;
queue = Parser.Parse(expression);
if (queue.Count == 1)
{
calcobject = queue.Dequeue();
}
else
{
Operate();
}
result = calcobject.Value;
return(result);
}