Method to_bytes

exir/_serialize/_program.py:239–265

Returns the binary representation of the extended header. Note that this will ignore self.magic and self.length and will always write the proper magic/length.

(self)

        )

    def to_bytes(self) -> bytes:
        """Returns the binary representation of the extended header.

        Note that this will ignore self.magic and self.length and will always
        write the proper magic/length.
        """
        data: bytes = (
            # Extended header magic. This lets consumers detect whether the
            # header was inserted or not. Always use the proper magic value
            # (i.e., ignore self.magic) since there's no reason to create an
            # invalid header.
            self.EXPECTED_MAGIC
            # uint32_t: Size of this header. This makes it easier to add new
            # fields to this header in the future. Always use the proper size
            # (i.e., ignore self.length) since there's no reason to create an
            # invalid header.
            + self.EXPECTED_LENGTH.to_bytes(4, byteorder=_HEADER_BYTEORDER)
            # uint64_t: Size of the flatbuffer data, including this header.
            + self.program_size.to_bytes(8, byteorder=_HEADER_BYTEORDER)
            # uint64_t: Offset to the start of the first segment, or zero if
            # there are no segments.
            + self.segment_base_offset.to_bytes(8, byteorder=_HEADER_BYTEORDER)
            # uint64_t: size of the segment data, or zero if there are no
            # segments.
            + self.segment_data_size.to_bytes(8, byteorder=_HEADER_BYTEORDER)
        )
        return data


def _get_extended_header(program_data: bytes) -> Optional[_ExtendedHeader]: