def mid_point()

in mozregression/build_range.py [0:0]

• 14 lines of code
• 8 McCabe index (conditional complexity)

    def mid_point(self, interrupt=None):
        """
        Return the mid point of the range.

        To find the mid point, the higher and lower limits of the range are
        accessed. Note that this method may resize the build range if some
        builds are invalids (we were not able to load build_info for some
        index)

        if `interrupt` is given, it should be a callable that takes no
        arguments and returns True when you want to stop looking for the
        mid_point. In this case, StopIteration will be raised. This is provided
        because this methods may take a long time to finish, and callers may
        want to end it at some point.
        """
        while True:
            if interrupt and interrupt():
                raise StopIteration
            size = len(self)
            if size < 3:
                # let's say that the middle point is 0 if there is not at least
                # 2 points - still, fetch data if needed.
                self._fetch(list(range(size)))
                self.filter_invalid_builds()
                return 0
            mid = int(size / 2)
            self._fetch((0, mid, size - 1))
            # remove invalids
            self.filter_invalid_builds()
            if len(self) == size:
                # nothing removed, so we found valid builds only
                return int(mid)