private void SwitchValues()
{
switch (operationStage)
{
case OperationStage.EnterFirstOperand:
{
SecondOperand.Reset();
operationStage = OperationStage.EnterSecondOperand;
break;
}
case OperationStage.EnterSecondOperand:
{
CalculateResult();
MoveResultToFirstOperand();
SecondOperand.Reset();
operationStage = OperationStage.EnterSecondOperand;
break;
}
case OperationStage.DisplayResult:
{
MoveResultToFirstOperand();
SecondOperand.Reset();
operationStage = OperationStage.EnterSecondOperand;
break;
}
}
}
public void ModifyOperand(string commandString)
{
if (operationStage == OperationStage.DisplayResult)
{
MoveResultToFirstOperand();
}
switch (commandString)
{
case ".":
{
GetCurrentOperandObject().SetHasAPoint(true);
break;
}
case "%":
{
GetCurrentOperandObject().DivideBy100();
break;
}
case "+/-":
{
GetCurrentOperandObject().Invert();
break;
}
case "C":
{
FirstOperand.Reset();
SecondOperand.Reset();
ResultOperand.Reset();
operationStage = OperationStage.EnterFirstOperand;
break;
}
}
}