public static void Rechnen(double operand1, Operator @operator, double operand2, Action <double> onSuccess, Action onFailure)
{
switch (@operator)
{
case Operator.Plus:
operand1 += operand2;
break;
case Operator.Minus:
operand1 -= operand2;
break;
case Operator.Mal:
operand1 *= operand2;
break;
case Operator.Durch:
if (operand2 == 0)
{
onFailure();
return;
}
operand1 /= operand2;
break;
default:
throw new ArgumentOutOfRangeException(@operator.ToString());
}
onSuccess(operand1);
}
// Check correctness
override public string ToString()
{
string expression;
if (Object.ReferenceEquals(op, null))
{
return(solution.ToString());
}
expression = OperatorNames.OpenParenthesis + Left.ToString() + op.ToString();
if (!op.IsUnary())
{
expression += Right.ToString();
}
return(expression + OperatorNames.ClosedParenthesis);
}
public override string ToString()
{
return Operator.ToString() + " " + PreviousTotal.ToString();
}
void PerformOperation(int leftIndex, int rightIndex, Operator operation)
{
// Perform operation against given operands.
// Result is stored back to left operand value.
// Right operand value is flagged as eliminated (used).
Operand left = GetLeftOperand(leftIndex);
Operand right = GetRightOperand(rightIndex);
try
{
switch (operation)
{
case Operator.Exponention:
throw new CalculatorEvaluateException("Exponentiation not implemented as integer operation");
case Operator.Multiplication:
left.Value = checked (left.Value * right.Value);
break;
case Operator.Division:
if (right.Value == 0)
{
throw new CalculatorEvaluateException("Division by zero.");
}
left.Value = left.Value / right.Value;
break;
case Operator.Addition:
left.Value = checked (left.Value + right.Value);
break;
case Operator.Subtraction:
left.Value = checked (left.Value - right.Value);
break;
default:
throw new CalculatorEvaluateException(string.Format("Unsupported operation {0}", operation.ToString()));
}
}
catch (OverflowException ex)
{
throw new CalculatorEvaluateException("Overflow error");
}
right.Eliminated = true;
}
public override string ToString()
{
return(Operator.ToString() + " " + Operand.ToString());
}
public override string ToString() => $"{number1?.ToString() ?? ""} {@operator?.ToString() ?? ""} {number2?.ToString() ?? ""}";
