comparison mercurial/obsolete.py @ 20206:cdcbe103b69a

obsolete: add an allprecursors method mirroring allsuccessors one.

Detection of bumped changeset should use `allprecursors(<mutable>)` instead or
`allsuccessors(<immutable>)` so we need the all precursors function to exists.

20205:d67a7758da6d

                continue
            for suc in mark[1]:
                if suc not in seen:
                    seen.add(suc)
                    remaining.add(suc)

def foreground(repo, nodes):
    """return all nodes in the "foreground" of other node

    The foreground of a revision is anything reachable using parent -> children

20206:cdcbe103b69a

                continue
            for suc in mark[1]:
                if suc not in seen:
                    seen.add(suc)
                    remaining.add(suc)

def allprecursors(obsstore, nodes, ignoreflags=0):
    """Yield node for every precursors of <nodes>.

    Some precursors may be unknown locally.

    This is a linear yield unsuited to detecting folded changesets. It includes
    initial nodes too."""

    remaining = set(nodes)
    seen = set(remaining)
    while remaining:
        current = remaining.pop()
        yield current
        for mark in obsstore.precursors.get(current, ()):
            # ignore marker flagged with specified flag
            if mark[2] & ignoreflags:
                continue
            suc = mark[0]
            if suc not in seen:
                seen.add(suc)
                remaining.add(suc)

def foreground(repo, nodes):
    """return all nodes in the "foreground" of other node

    The foreground of a revision is anything reachable using parent -> children