(* * Copyright (c) 2016-present, Facebook, Inc. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. *) open! IStd (** Object representing the status of the join operation *) type mode = Pre | Post [@@deriving compare] let equal_mode = [%compare.equal: mode] (** set to true when we are doing join of footprints *) let footprint = ref false let get_footprint () = !footprint let set_footprint b = footprint := b