def __hashcode_fallback()

in pyignite/utils.py [0:0]

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

def __hashcode_fallback(data: Union[str, bytes, bytearray, memoryview]) -> int:
    if data is None:
        return 0

    if isinstance(data, str):
        """
        For strings we iterate over code point which are of the int type
        and can take up to 4 bytes and can only be positive.
        """
        result = 0
        for char in data:
            try:
                char_val = ord(char)
                result = int_overflow(31 * result + char_val)
            except TypeError:
                pass
    else:
        """
        For byte array we iterate over bytes which only take 1 byte. But
        according to protocol, bytes during hashing should be treated as signed
        integer numbers 8 bits long. On other hand elements in Python's `bytes`
        are unsigned. For this reason we use ctypes.c_byte() to make them
        signed.
        """
        result = 1
        for byte in data:
            byte = ctypes.c_byte(byte).value
            result = int_overflow(31 * result + byte)
    return result