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124 lines
3.1 KiB
124 lines
3.1 KiB
(*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*)
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open! NS0
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include NSSet_intf
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type ('elt, 'compare_elt) t = ('elt, 'compare_elt) Set.t
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[@@deriving compare, equal, sexp]
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type 'compare_elt compare = 'compare_elt Set.compare
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[@@deriving compare, equal, sexp]
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module Make_from_Comparer (Elt : sig
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type t [@@deriving equal, sexp_of]
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include Comparer.S with type t := t
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end) =
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struct
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module S = Set.Make [@inlined] (Elt)
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type elt = Elt.t
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type compare_elt = Elt.compare
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type t = S.t [@@deriving compare]
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type compare = S.compare [@@deriving compare, equal, sexp]
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let comparer = S.comparer
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include S.Provide_equal (Elt)
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module Provide_hash (Elt : sig
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type t = elt [@@deriving hash]
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end) =
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struct
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let hash_fold_t h s =
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let length = ref 0 in
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let s =
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S.fold
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(fun x h ->
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incr length ;
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Elt.hash_fold_t h x )
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s h
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in
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Hash.fold_int s !length
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let hash = Hash.of_fold hash_fold_t
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end
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include S.Provide_sexp_of (Elt)
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module Provide_of_sexp = S.Provide_of_sexp
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let empty = S.empty
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let of_ = S.singleton
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let of_option xo = Option.map_or ~f:S.singleton xo ~default:empty
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let add x s = S.add x s
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let add_option = Option.fold ~f:add
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let add_list xs s = S.union (S.of_list xs) s
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let remove x s = S.remove x s
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let diff = S.diff
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let inter = S.inter
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let union = S.union
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let diff_inter s t = (diff s t, inter s t)
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let diff_inter_diff s t = (diff s t, inter s t, diff t s)
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let union_list ss = List.fold ~f:union ss empty
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let is_empty = S.is_empty
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let cardinal = S.cardinal
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let mem = S.mem
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let subset s ~of_:t = S.subset s t
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let disjoint = S.disjoint
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let max_elt = S.max_elt_opt
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let choose = S.choose_opt
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let choose_exn = S.choose
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let pop = S.pop_opt
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let pop_exn = S.pop
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let only_elt = S.only_elt
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let classify = S.classify
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let map s ~f = S.map f s
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let flat_map s ~f = S.fold (fun x s -> S.union (f x) s) s S.empty
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let filter s ~f = S.filter f s
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let partition s ~f = S.partition f s
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let iter s ~f = S.iter f s
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let exists s ~f = S.exists f s
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let for_all s ~f = S.for_all f s
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let fold s z ~f = S.fold f s z
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let reduce xs ~f =
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match pop xs with Some (x, xs) -> Some (fold ~f xs x) | None -> None
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let to_list = S.elements
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let of_list = S.of_list
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let to_iter s = Iter.from_iter (fun f -> S.iter f s)
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let of_iter s = Iter.fold ~f:add s S.empty
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let pp_full ?pre ?suf ?(sep = (",@ " : (unit, unit) fmt)) pp_elt fs x =
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List.pp ?pre ?suf sep pp_elt fs (S.elements x)
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module Provide_pp (Elt : sig
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type t = elt
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val pp : t pp
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end) =
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struct
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let pp = pp_full Elt.pp
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let pp_diff fs (xs, ys) =
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let lose = diff xs ys and gain = diff ys xs in
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if not (is_empty lose) then Format.fprintf fs "-- %a" pp lose ;
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if not (is_empty gain) then Format.fprintf fs "++ %a" pp gain
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end
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end
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[@@inline]
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module Make (Elt : sig
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type t [@@deriving compare, equal, sexp_of]
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end) =
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Make_from_Comparer (struct
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include Elt
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include Comparer.Make (Elt)
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end)
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[@@inline]
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