public double Calculate()
{
if (Root_Node)
{
return(Value);
}
if (Left == null)
{
return(Perform_Action(Right.Calculate()));
}
if (Right == null)
{
return(Perform_Action(Left.Calculate()));
}
return(Perform_Action(Left.Calculate(), Right.Calculate()));
}
/*
*---------------------------One of the most important functions of the program----------------------------------------
* Called when the equal sign is written
*/
private double Calculate_Value()
{
List <Mouse_Data> L = new List <Mouse_Data>();
for (int i = 0; i < Screen.Count; i++)
{
Mouse_Data D = Screen[i];
if (D.Label != "equals" && !D.Calculated)
{
L.Add(D);
}
Screen[i].Calculated = true;
}
Math_Node Tree = new Math_Node(L);
return(Tree.Calculate());
}