(** A signature for identifier types. *)

open! Import

module type S_common = sig
  type t [@@deriving compare, hash, sexp_of]

  include Stringable.S with type t := t
  include Pretty_printer.S with type t := t
end

module type S_plain = sig
  include S_common
  include Comparable.S_plain with type t := t
  include Hashable.S_plain with type t := t
end

module type S_not_binable = sig
  type t [@@deriving hash, sexp]

  include S_common with type t := t
  include Comparable.S with type t := t
  include Hashable.S with type t := t
end

module type S = sig
  type t [@@deriving bin_io, hash, sexp]

  include S_common with type t := t
  include Comparable.S_binable with type t := t
  include Hashable.S_binable with type t := t
end

module Make_plain (M : sig
    type t [@@deriving compare, hash, sexp_of]

    include Stringable.S with type t := t

    (** for registering the pretty printer *)
    val module_name : string
  end) : S_plain with type t := M.t

(** Used for making an Identifiable module. Here's an example:

    {[
      module Id = struct
        module T = struct
          type t = A | B [@@deriving bin_io, compare, hash, sexp]
          include Sexpable.To_stringable (struct type nonrec t = t [@@deriving sexp] end)
          let module_name = "My_library.Id"
        end
        include T
        include Identifiable.Make (T)
      end
    ]}
*)
module Make (M : sig
    type t [@@deriving bin_io, compare, hash, sexp]

    include Stringable.S with type t := t

    (** for registering the pretty printer *)
    val module_name : string
  end) : S with type t := M.t

module Make_and_derive_hash_fold_t (M : sig
    type t [@@deriving bin_io, compare, sexp]

    include Stringable.S with type t := t

    val hash : t -> int

    (** for registering the pretty printer *)
    val module_name : string
  end) : S with type t := M.t

module Make_using_comparator (M : sig
    type t [@@deriving bin_io, compare, hash, sexp]

    include Comparator.S with type t := t
    include Stringable.S with type t := t

    val module_name : string
  end) : S with type t := M.t with type comparator_witness := M.comparator_witness

module Make_using_comparator_and_derive_hash_fold_t (M : sig
    type t [@@deriving bin_io, compare, sexp]

    include Comparator.S with type t := t
    include Stringable.S with type t := t

    val hash : t -> int
    val module_name : string
  end) : S with type t := M.t with type comparator_witness := M.comparator_witness

module Extend (M : Base.Identifiable.S) (B : Binable0.S with type t = M.t) :
  S with type t := M.t with type comparator_witness := M.comparator_witness
