Source file comparator.ml
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open! Import
type ('a, 'witness) t =
{ compare : 'a -> 'a -> int
; sexp_of_t : 'a -> Sexp.t
}
type ('a, 'b) comparator = ('a, 'b) t
module type S = sig
type t
type comparator_witness
val comparator : (t, comparator_witness) comparator
end
module type S1 = sig
type 'a t
type comparator_witness
val comparator : ('a t, comparator_witness) comparator
end
module type S_fc = sig
type comparable_t
include S with type t := comparable_t
end
module Module = struct
type ('a, 'b) t = (module S with type t = 'a and type comparator_witness = 'b)
end
let make (type t) ~compare ~sexp_of_t =
(module struct
type comparable_t = t
type comparator_witness
let comparator = { compare; sexp_of_t }
end : S_fc
with type comparable_t = t)
;;
module S_to_S1 (S : S) = struct
type 'a t = S.t
type comparator_witness = S.comparator_witness
open S
let comparator = comparator
end
module Make (M : sig
type t [@@deriving_inline compare, sexp_of]
include Ppx_compare_lib.Comparable.S with type t := t
val sexp_of_t : t -> Sexplib0.Sexp.t
[@@@end]
end) =
struct
include M
type comparator_witness
let comparator = M.{ compare; sexp_of_t }
end
module Make1 (M : sig
type 'a t
val compare : 'a t -> 'a t -> int
val sexp_of_t : 'a t -> Sexp.t
end) =
struct
type comparator_witness
let comparator = M.{ compare; sexp_of_t }
end
module Poly = struct
type 'a t = 'a
include Make1 (struct
type 'a t = 'a
let compare = Poly.compare
let sexp_of_t _ = Sexp.Atom "_"
end)
end
module type Derived = sig
type 'a t
type !'cmp comparator_witness
val comparator : ('a, 'cmp) comparator -> ('a t, 'cmp comparator_witness) comparator
end
module Derived (M : sig
type 'a t [@@deriving_inline compare, sexp_of]
include Ppx_compare_lib.Comparable.S1 with type 'a t := 'a t
val sexp_of_t : ('a -> Sexplib0.Sexp.t) -> 'a t -> Sexplib0.Sexp.t
[@@@end]
end) =
struct
type !'cmp comparator_witness
let comparator a =
{ compare = M.compare a.compare; sexp_of_t = M.sexp_of_t a.sexp_of_t }
;;
end
module type Derived2 = sig
type ('a, 'b) t
type (!'cmp_a, !'cmp_b) comparator_witness
val comparator
: ('a, 'cmp_a) comparator
-> ('b, 'cmp_b) comparator
-> (('a, 'b) t, ('cmp_a, 'cmp_b) comparator_witness) comparator
end
module Derived2 (M : sig
type ('a, 'b) t [@@deriving_inline compare, sexp_of]
include Ppx_compare_lib.Comparable.S2 with type ('a, 'b) t := ('a, 'b) t
val sexp_of_t
: ('a -> Sexplib0.Sexp.t)
-> ('b -> Sexplib0.Sexp.t)
-> ('a, 'b) t
-> Sexplib0.Sexp.t
[@@@end]
end) =
struct
type (!'cmp_a, !'cmp_b) comparator_witness
let comparator a b =
{ compare = M.compare a.compare b.compare
; sexp_of_t = M.sexp_of_t a.sexp_of_t b.sexp_of_t
}
;;
end
module type Derived_phantom = sig
type ('a, 'b) t
type 'cmp comparator_witness
val comparator
: ('a, 'cmp) comparator
-> (('a, _) t, 'cmp comparator_witness) comparator
end
module Derived_phantom (M : sig
type ('a, 'b) t
val compare : ('a -> 'a -> int) -> ('a, 'b) t -> ('a, 'b) t -> int
val sexp_of_t : ('a -> Sexp.t) -> ('a, _) t -> Sexp.t
end) =
struct
type 'cmp_a comparator_witness
let comparator a =
{ compare = M.compare a.compare; sexp_of_t = M.sexp_of_t a.sexp_of_t }
;;
end
module type Derived2_phantom = sig
type ('a, 'b, 'c) t
type (!'cmp_a, !'cmp_b) comparator_witness
val comparator
: ('a, 'cmp_a) comparator
-> ('b, 'cmp_b) comparator
-> (('a, 'b, _) t, ('cmp_a, 'cmp_b) comparator_witness) comparator
end
module Derived2_phantom (M : sig
type ('a, 'b, 'c) t
val compare
: ('a -> 'a -> int)
-> ('b -> 'b -> int)
-> ('a, 'b, 'c) t
-> ('a, 'b, 'c) t
-> int
val sexp_of_t : ('a -> Sexp.t) -> ('b -> Sexp.t) -> ('a, 'b, _) t -> Sexp.t
end) =
struct
type (!'cmp_a, !'cmp_b) comparator_witness
let comparator a b =
{ compare = M.compare a.compare b.compare
; sexp_of_t = M.sexp_of_t a.sexp_of_t b.sexp_of_t
}
;;
end