comparison mercurial/revset.py @ 35270:0d27685b4a2f

dagop: copy basefilectx.ancestors() to free function

The primary goal of this series is to make follow() support multiple start
revisions.

dagop.filectxancestors() will be extended to take multiple filectxs.
basefilectx.ancestors() is not forwarded to this function because doing that
would resurrect the performance issue fixed by 24b57c3899f8.

35269:2af38229f147

        files = c.manifest().walk(matcher)

        s = set()
        for fname in files:
            fctx = c[fname]
            s = s.union(set(c.rev() for c in fctx.ancestors(followfirst)))
            # include the revision responsible for the most recent version
            s.add(fctx.introrev())
    else:
        s = dagop.revancestors(repo, baseset([c.rev()]), followfirst)

35270:0d27685b4a2f

        files = c.manifest().walk(matcher)

        s = set()
        for fname in files:
            fctx = c[fname]
            a = dagop.filectxancestors(fctx, followfirst)
            s = s.union(set(c.rev() for c in a))
            # include the revision responsible for the most recent version
            s.add(fctx.introrev())
    else:
        s = dagop.revancestors(repo, baseset([c.rev()]), followfirst)