comparison mercurial/revlog.py @ 39152:3b1042cab4b4

revlog: add a method to retrieve snapshot depth

Some snapshot property (eg: maximum size) will depend on their depth.

39151:07b82f55f351

        p1, p2 = self.parentrevs(rev)
        if deltap in (p1, p2):
            return False
        return self.issnapshot(deltap)

    def revdiff(self, rev1, rev2):
        """return or calculate a delta between two revisions

        The delta calculated is in binary form and is intended to be written to
        revlog data directly. So this function needs raw revision data.

39152:3b1042cab4b4

        p1, p2 = self.parentrevs(rev)
        if deltap in (p1, p2):
            return False
        return self.issnapshot(deltap)

    def snapshotdepth(self, rev):
        """number of snapshot in the chain before this one"""
        if not self.issnapshot(rev):
            raise ProgrammingError('revision %d not a snapshot')
        return len(self._deltachain(rev)[0]) - 1

    def revdiff(self, rev1, rev2):
        """return or calculate a delta between two revisions

        The delta calculated is in binary form and is intended to be written to
        revlog data directly. So this function needs raw revision data.