Method offset_from_jump_arg

Lib/dis.py:563–573

(self, op, arg, offset)

        self.labels_map = labels_map or {}

    def offset_from_jump_arg(self, op, arg, offset):
        deop = _deoptop(op)
        if deop in hasjabs:
            return arg * 2
        elif deop in hasjrel:
            signed_arg = -arg if _is_backward_jump(deop) else arg
            argval = offset + 2 + signed_arg*2
            caches = _get_cache_size(_all_opname[deop])
            argval += 2 * caches
            return argval
        return None

    def get_label_for_offset(self, offset):
        return self.labels_map.get(offset, None)