comparison hgext/evolve.py @ 1408:b3afdc0815d0

evolve: skip unstable changesets with multiple successorssets

We were previously crashing when encountering them, but we want to be able to
solve the other solvable troubles instead of stopping right there.

1407:552687eb4856

    if showprogress:
        ui.progress('evolve', None)
    if repo['.'] != startnode:
        ui.status(_('working directory is now at %s\n') % repo['.'])

def _singlesuccessor(repo, p):
    """returns p (as rev) if not obsolete or its unique latest successors

    fail if there are no such successor"""

                 " trying to stabilize on its parent\n" %
                 obs)
        obs = obs.parents()[0]
        newer = obsolete.successorssets(repo, obs.node())
    if len(newer) > 1:
        raise util.Abort(_("conflict rewriting. can't choose destination\n"))
    return repo[newer[0][0]].rev()

def builddependencies(repo, revs):
    """ returns dependency graphs giving an order to solve instability of revs
    (see orderrevs for more information on usage) """

    rdependencies = collections.defaultdict(set)

    for r in revs:
        dependencies[r] = set()
        for p in repo[r].parents():
            succ = _singlesuccessor(repo, p)
            if succ in revs:
                dependencies[r].add(succ)
                rdependencies[succ].add(r)
    return dependencies, rdependencies

1408:b3afdc0815d0

    if showprogress:
        ui.progress('evolve', None)
    if repo['.'] != startnode:
        ui.status(_('working directory is now at %s\n') % repo['.'])

class MultipleSuccessorsError(RuntimeError):
    """Exception raised by _singlesuccessor when multiple sucessors sets exists

    The object contains the list of successorssets in its 'successorssets'
    attribute to call to easily recover.
    """

    def __init__(self, successorssets):
        self.successorssets = successorssets

def _singlesuccessor(repo, p):
    """returns p (as rev) if not obsolete or its unique latest successors

    fail if there are no such successor"""

                 " trying to stabilize on its parent\n" %
                 obs)
        obs = obs.parents()[0]
        newer = obsolete.successorssets(repo, obs.node())
    if len(newer) > 1:
        raise MultipleSuccessorsError(newer)

    return repo[newer[0][0]].rev()

def builddependencies(repo, revs):
    """ returns dependency graphs giving an order to solve instability of revs
    (see orderrevs for more information on usage) """

    rdependencies = collections.defaultdict(set)

    for r in revs:
        dependencies[r] = set()
        for p in repo[r].parents():
            try:
                succ = _singlesuccessor(repo, p)
            except MultipleSuccessorsError, exc:
                dependencies[r] = exc.successorssets
            if succ in revs:
                dependencies[r].add(succ)
                rdependencies[succ].add(r)
    return dependencies, rdependencies