Boo.Lang.Runtime.RuntimeServices.InvokeUnaryOperator C# (CSharp) Метод

        public static object InvokeUnaryOperator(string operatorName, object operand)
        {
            Type operandType = operand.GetType();
            TypeCode operandTypeCode = Type.GetTypeCode(operandType);

            if (IsNumeric(operandTypeCode))
            {
                // HACK: optimization to get to the correct operators faster
                // is it worthy?
                switch (((int)operatorName[3] << 8) + (int)operatorName[operatorName.Length - 1])
                {
                    case ((int)'U' << 8) + (int)'n':			// op_UnaryNegation
                        return op_UnaryNegation(operand, operandTypeCode);
                    default:
                        throw new ArgumentException(operatorName + " " + operand);
                }
            }
            else
            {
                var args = new[] { operand };
                var duck = operand as IQuackFu;
                if (duck != null)
                    return duck.QuackInvoke(operatorName, args);

                try
                {
                    return Invoke(operandType, operatorName, args);
                }
                catch (MissingMethodException)
                {
                    try
                    {
                        return InvokeRuntimeServicesOperator(operatorName, args);
                    }
                    catch (MissingMethodException)
                    {
                    }

                    throw; // always throw the original exception
                }
            }
        }