comparison mercurial/copies.py @ 30135:3eae81c0a09d

checkcopies: rename 'ca' to 'base'

This variable was named after the common ancestor. It is actually the merge
base that might differ from the common ancestor in the graft case. We rename the
variable before a larger refactoring to clarify the situation.

30134:165c9526e594

                                       "dst: '%s'\n") % (f, df))
                    break

    return copy, movewithdir, diverge, renamedelete

def _checkcopies(ctx, f, m1, m2, ca, limit, diverge, copy, fullcopy):
    """
    check possible copies of f from m1 to m2

    ctx = starting context for f in m1
    f = the filename to check
    m1 = the source manifest
    m2 = the destination manifest
    ca = the changectx of the common ancestor
    limit = the rev number to not search beyond
    diverge = record all diverges in this dict
    copy = record all non-divergent copies in this dict
    fullcopy = record all copies in this dict

    irrelevant revisions will not be limited
    there is no easy way to make this algorithm stop in a guaranteed way
    once it "goes behind a certain revision".
    """

    ma = ca.manifest()
    getfctx = _makegetfctx(ctx)

    def _related(f1, f2, limit):
        # Walk back to common ancestor to see if the two files originate
        # from the same file. Since workingfilectx's rev() is None it messes

        seen.add(of)

        fullcopy[f] = of # remember for dir rename detection
        if of not in m2:
            continue # no match, keep looking
        if m2[of] == ma.get(of):
            return # no merge needed, quit early
        c2 = getfctx(of, m2[of])
        cr = _related(oc, c2, ca.rev())
        if cr and (of == f or of == c2.path()): # non-divergent
            copy[f] = of
            return

    if of in ma:
        diverge.setdefault(of, []).append(f)

def duplicatecopies(repo, rev, fromrev, skiprev=None):
    '''reproduce copies from fromrev to rev in the dirstate

30135:3eae81c0a09d

                                       "dst: '%s'\n") % (f, df))
                    break

    return copy, movewithdir, diverge, renamedelete

def _checkcopies(ctx, f, m1, m2, base, limit, diverge, copy, fullcopy):
    """
    check possible copies of f from m1 to m2

    ctx = starting context for f in m1
    f = the filename to check
    m1 = the source manifest
    m2 = the destination manifest
    base = the changectx used as a merge base
    limit = the rev number to not search beyond
    diverge = record all diverges in this dict
    copy = record all non-divergent copies in this dict
    fullcopy = record all copies in this dict

    irrelevant revisions will not be limited
    there is no easy way to make this algorithm stop in a guaranteed way
    once it "goes behind a certain revision".
    """

    mb = base.manifest()
    getfctx = _makegetfctx(ctx)

    def _related(f1, f2, limit):
        # Walk back to common ancestor to see if the two files originate
        # from the same file. Since workingfilectx's rev() is None it messes

        seen.add(of)

        fullcopy[f] = of # remember for dir rename detection
        if of not in m2:
            continue # no match, keep looking
        if m2[of] == mb.get(of):
            return # no merge needed, quit early
        c2 = getfctx(of, m2[of])
        cr = _related(oc, c2, base.rev())
        if cr and (of == f or of == c2.path()): # non-divergent
            copy[f] = of
            return

    if of in mb:
        diverge.setdefault(of, []).append(f)

def duplicatecopies(repo, rev, fromrev, skiprev=None):
    '''reproduce copies from fromrev to rev in the dirstate