def from_python_not_null()

in pyignite/datatypes/standard.py [0:0]

• 24 lines of code
• 6 McCabe index (conditional complexity)

    def from_python_not_null(cls, stream, value: decimal.Decimal, **kwargs):
        sign, digits, scale = value.normalize().as_tuple()
        integer = int(''.join([str(d) for d in digits]))
        # calculate number of bytes (at least one, and not forget the sign bit)
        length = ceil((integer.bit_length() + 1) / 8)
        # write byte string
        data = []
        for i in range(length):
            digit = integer % 0x100
            integer //= 0x100
            data.insert(0, digit)
        # apply sign
        if sign:
            data[0] |= 0x80
        else:
            data[0] &= 0x7f
        data_class = cls.build_c_type(length)
        data_object = data_class()
        data_object.type_code = int.from_bytes(
            cls.type_code,
            byteorder=PROTOCOL_BYTE_ORDER
        )
        data_object.length = length
        data_object.scale = -scale
        for i in range(length):
            data_object.data[i] = data[i]

        stream.write(data_object)