comparison mercurial/merge.py @ 21081:ffd7b6ce46ff

merge: pass merge ancestor to calculateupdates as a list

The list will so far always have one element.

21080:04540a8499a3

    ms.commit()
    progress(_updating, None, total=numupdates, unit=_files)

    return updated, merged, removed, unresolved

def calculateupdates(repo, wctx, mctx, ancestor, branchmerge, force, partial,
                     acceptremote, followcopies):
    "Calculate the actions needed to merge mctx into wctx using ancestor"

    actions = manifestmerge(repo, wctx, mctx,
                             ancestor,
                             branchmerge, force,
                             partial, acceptremote, followcopies)

    wlock = repo.wlock()
    try:
        wc = repo[None]
        pl = wc.parents()
        p1 = pl[0]
        pa = None
        if ancestor:
            pa = repo[ancestor]

        if node is None:
            # Here is where we should consider bookmarks, divergent bookmarks,
            # foreground changesets (successors), and tip of current branch;
            # but currently we are only checking the branch tips.

                    successors = [n for sub in successors for n in sub]

                    # get the max revision for the given successors set,
                    # i.e. the 'tip' of a set
                    node = repo.revs("max(%ln)", successors)[0]
                    pa = p1

        overwrite = force and not branchmerge

        p2 = repo[node]
        if pa is None:
            pa = p1.ancestor(p2)

        fp1, fp2, xp1, xp2 = p1.node(), p2.node(), str(p1), str(p2)

        ### check phase
        if not overwrite and len(pl) > 1:
            raise util.Abort(_("outstanding uncommitted merges"))
        if branchmerge:
            if pa == p2:
                raise util.Abort(_("merging with a working directory ancestor"
                                   " has no effect"))
            elif pa == p1:
                if not mergeancestor and p1.branch() == p2.branch():
                    raise util.Abort(_("nothing to merge"),
                                     hint=_("use 'hg update' "
                                            "or check 'hg heads'"))
            if not force and (wc.files() or wc.deleted()):

                # call the hooks and exit early
                repo.hook('preupdate', throw=True, parent1=xp2, parent2='')
                repo.hook('update', parent1=xp2, parent2='', error=0)
                return 0, 0, 0, 0

            if pa not in (p1, p2):  # nonlinear
                dirty = wc.dirty(missing=True)
                if dirty or onode is None:
                    # Branching is a bit strange to ensure we do the minimal
                    # amount of call to obsolete.background.
                    foreground = obsolete.foreground(repo, [p1.node()])
                    # note: the <node> variable contains a random identifier
                    if repo[node].node() in foreground:
                        pa = p1  # allow updating to successors
                    elif dirty:
                        msg = _("uncommitted changes")
                        if onode is None:
                            hint = _("commit and merge, or update --clean to"
                                     " discard changes")

                        msg = _("not a linear update")
                        hint = _("merge or update --check to force update")
                        raise util.Abort(msg, hint=hint)
                else:
                    # Allow jumping branches if clean and specific rev given
                    pa = p1

        followcopies = False
        if overwrite:
            pa = wc
        elif pa == p2: # backwards
            pa = wc.p1()
        elif not branchmerge and not wc.dirty(missing=True):
            pass
        elif pa and repo.ui.configbool("merge", "followcopies", True):
            followcopies = True

        ### calculate phase
        actions = calculateupdates(repo, wc, p2, pa, branchmerge, force,
                                   partial, mergeancestor, followcopies)

        ### apply phase
        if not branchmerge: # just jump to the new rev
            fp1, fp2, xp1, xp2 = fp2, nullid, xp2, ''

21081:ffd7b6ce46ff

    ms.commit()
    progress(_updating, None, total=numupdates, unit=_files)

    return updated, merged, removed, unresolved

def calculateupdates(repo, wctx, mctx, ancestors, branchmerge, force, partial,
                     acceptremote, followcopies):
    "Calculate the actions needed to merge mctx into wctx using ancestors"

    ancestor = ancestors[0]

    actions = manifestmerge(repo, wctx, mctx,
                             ancestor,
                             branchmerge, force,
                             partial, acceptremote, followcopies)

    wlock = repo.wlock()
    try:
        wc = repo[None]
        pl = wc.parents()
        p1 = pl[0]
        pas = [None]
        if ancestor:
            pas = [repo[ancestor]]

        if node is None:
            # Here is where we should consider bookmarks, divergent bookmarks,
            # foreground changesets (successors), and tip of current branch;
            # but currently we are only checking the branch tips.

                    successors = [n for sub in successors for n in sub]

                    # get the max revision for the given successors set,
                    # i.e. the 'tip' of a set
                    node = repo.revs("max(%ln)", successors)[0]
                    pas = [p1]

        overwrite = force and not branchmerge

        p2 = repo[node]
        if pas[0] is None:
            pas = [p1.ancestor(p2)]

        fp1, fp2, xp1, xp2 = p1.node(), p2.node(), str(p1), str(p2)

        ### check phase
        if not overwrite and len(pl) > 1:
            raise util.Abort(_("outstanding uncommitted merges"))
        if branchmerge:
            if pas == [p2]:
                raise util.Abort(_("merging with a working directory ancestor"
                                   " has no effect"))
            elif pas == [p1]:
                if not mergeancestor and p1.branch() == p2.branch():
                    raise util.Abort(_("nothing to merge"),
                                     hint=_("use 'hg update' "
                                            "or check 'hg heads'"))
            if not force and (wc.files() or wc.deleted()):

                # call the hooks and exit early
                repo.hook('preupdate', throw=True, parent1=xp2, parent2='')
                repo.hook('update', parent1=xp2, parent2='', error=0)
                return 0, 0, 0, 0

            if pas not in ([p1], [p2]):  # nonlinear
                dirty = wc.dirty(missing=True)
                if dirty or onode is None:
                    # Branching is a bit strange to ensure we do the minimal
                    # amount of call to obsolete.background.
                    foreground = obsolete.foreground(repo, [p1.node()])
                    # note: the <node> variable contains a random identifier
                    if repo[node].node() in foreground:
                        pas = [p1]  # allow updating to successors
                    elif dirty:
                        msg = _("uncommitted changes")
                        if onode is None:
                            hint = _("commit and merge, or update --clean to"
                                     " discard changes")

                        msg = _("not a linear update")
                        hint = _("merge or update --check to force update")
                        raise util.Abort(msg, hint=hint)
                else:
                    # Allow jumping branches if clean and specific rev given
                    pas = [p1]

        followcopies = False
        if overwrite:
            pas = [wc]
        elif pas == [p2]: # backwards
            pas = [wc.p1()]
        elif not branchmerge and not wc.dirty(missing=True):
            pass
        elif pas[0] and repo.ui.configbool("merge", "followcopies", True):
            followcopies = True

        ### calculate phase
        actions = calculateupdates(repo, wc, p2, pas, branchmerge, force,
                                   partial, mergeancestor, followcopies)

        ### apply phase
        if not branchmerge: # just jump to the new rev
            fp1, fp2, xp1, xp2 = fp2, nullid, xp2, ''