Source file pack_dict.ml

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(*
 * Copyright (c) 2018-2021 Tarides <contact@tarides.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *)

module type S = sig
  include Dict.S

  val v : ?fresh:bool -> ?readonly:bool -> ?capacity:int -> string -> t
end

module Make (V : Version.S) = struct
  include Dict.Make (V) (IO.Unix)

  (* Add IO caching around Dict.v *)
  let IO.Cache.{ v } =
    let v_no_cache ~fresh ~readonly = v ~fresh ~readonly in
    IO.Cache.memoize ~clear ~valid
      ~v:(fun capacity -> v_no_cache ~capacity)
      Layout.dict

  let v ?fresh ?readonly ?(capacity = 100_000) root =
    v capacity ?fresh ?readonly root
end