def _set_cache_(self, attr):
        """Cache all our attributes at once"""
        if attr in TagObject.__slots__:
            ostream = self.repo.odb.stream(self.binsha)
            lines = ostream.read().decode(defenc).splitlines()

            obj, hexsha = lines[0].split(" ")       # object <hexsha> @UnusedVariable
            type_token, type_name = lines[1].split(" ")  # type <type_name> @UnusedVariable
            self.object = \
                get_object_type_by_name(type_name.encode('ascii'))(self.repo, hex_to_bin(hexsha))

            self.tag = lines[2][4:]  # tag <tag name>

            tagger_info = lines[3]  # tagger <actor> <date>
            self.tagger, self.tagged_date, self.tagger_tz_offset = parse_actor_and_date(tagger_info)

            # line 4 empty - it could mark the beginning of the next header
            # in case there really is no message, it would not exist. Otherwise
            # a newline separates header from message
            if len(lines) > 5:
                self.message = "\n".join(lines[5:])
            else:
                self.message = ''
        # END check our attributes
        else:
            super(TagObject, self)._set_cache_(attr)
Cache all our attributes at once