/// <summary>
/// Builds the <c>CalcOperation</c>.
/// </summary>
public CalcOperation Build()
{
if (Operator == null)
{
throw new InvalidOperationException("CalcOperations cannot be built without an operator.");
}
string operType = Operator.GetType().Name;
// Postfix and Binary operators require a left operand.
if (!(Operator is CLPrefixOperator))
{
if (LeftExp != null)
{
Left = LeftExp.Build();
}
if (LeftObj == null)
{
throw new InvalidOperationException(operType + " requires a left-side operand.");
}
}
else
{
LeftObj = null;
}
// Prefix and Binary operators require a left operand.
if (!(Operator is CLPostfixOperator))
{
if (RightExp != null)
{
Right = RightExp.Build();
}
if (RightObj == null)
{
throw new InvalidOperationException(operType + " requires a right-side operand.");
}
}
else
{
RightObj = null;
}
return(new CalcOperation(LeftObj, Operator, RightObj));
}
