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

        private static object op_Addition(object lhs, TypeCode lhsTypeCode,
            object rhs, TypeCode rhsTypeCode)
        {
            IConvertible lhsConvertible = (IConvertible)lhs;
            IConvertible rhsConvertible = (IConvertible)rhs;

            switch (GetConvertTypeCode(lhsTypeCode, rhsTypeCode))
            {
                case TypeCode.Decimal:
                    return lhsConvertible.ToDecimal(null) + rhsConvertible.ToDecimal(null);
                case TypeCode.Double:
                    return lhsConvertible.ToDouble(null) + rhsConvertible.ToDouble(null);
                case TypeCode.Single:
                    return lhsConvertible.ToSingle(null) + rhsConvertible.ToSingle(null);
                case TypeCode.UInt64:
                    return lhsConvertible.ToUInt64(null) + rhsConvertible.ToUInt64(null);
                case TypeCode.Int64:
                    return lhsConvertible.ToInt64(null) + rhsConvertible.ToInt64(null);
                case TypeCode.UInt32:
                    return lhsConvertible.ToUInt32(null) + rhsConvertible.ToUInt32(null);
                default:
                    return lhsConvertible.ToInt32(null) + rhsConvertible.ToInt32(null);
            }
        }