comparison mercurial/subrepo.py @ 25416:c4a92867c048

subrepo: introduce the nullsubrepo() method

This will be used in an upcoming patch.  It's a one-off use, but seems better to
be contained in the subrepo module, than for the next patch to overwrite the
_ctx and _state fields in another module.  '' is used as the default revision in
subrepo.state() if it can't be found, so it seems like a safe choice.

25415:21b536f01eda

    state = ctx.substate[path]
    if state[2] not in types:
        raise util.Abort(_('unknown subrepo type %s') % state[2])
    return types[state[2]](ctx, path, state[:2])

def newcommitphase(ui, ctx):
    commitphase = phases.newcommitphase(ui)
    substate = getattr(ctx, "substate", None)
    if not substate:
        return commitphase

25416:c4a92867c048

    state = ctx.substate[path]
    if state[2] not in types:
        raise util.Abort(_('unknown subrepo type %s') % state[2])
    return types[state[2]](ctx, path, state[:2])

def nullsubrepo(ctx, path, pctx):
    """return an empty subrepo in pctx for the extant subrepo in ctx"""
    # subrepo inherently violates our import layering rules
    # because it wants to make repo objects from deep inside the stack
    # so we manually delay the circular imports to not break
    # scripts that don't use our demand-loading
    global hg
    import hg as h
    hg = h

    pathutil.pathauditor(ctx.repo().root)(path)
    state = ctx.substate[path]
    if state[2] not in types:
        raise util.Abort(_('unknown subrepo type %s') % state[2])
    subrev = ''
    if state[2] == 'hg':
        subrev = "0" * 40
    return types[state[2]](pctx, path, (state[0], subrev))

def newcommitphase(ui, ctx):
    commitphase = phases.newcommitphase(ui)
    substate = getattr(ctx, "substate", None)
    if not substate:
        return commitphase