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Add Registry to stdlib

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Co-authored-by: Pietro Abate <pietro.abate@tezcore.com>
Co-authored-by: Raphaël Proust <code@bnwr.net>
This commit is contained in:
Pietro Abate 2018-09-19 14:26:06 +02:00 committed by Grégoire Henry
parent e966884381
commit 8b8b355bd3
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2 changed files with 98 additions and 0 deletions
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57
src/lib_stdlib/registry.ml Normal file
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(*****************************************************************************)
(* *)
(* Open Source License *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
(* *)
(* Permission is hereby granted, free of charge, to any person obtaining a *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
(* and/or sell copies of the Software, and to permit persons to whom the *)
(* Software is furnished to do so, subject to the following conditions: *)
(* *)
(* The above copyright notice and this permission notice shall be included *)
(* in all copies or substantial portions of the Software. *)
(* *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
(* DEALINGS IN THE SOFTWARE. *)
(* *)
(*****************************************************************************)
module type S = sig
type k
type v
val register: k -> v -> unit
val alter: k -> (v -> v) -> unit
val remove: k -> unit
val query: k -> v option
val iter_p: (k -> v -> unit Lwt.t) -> unit Lwt.t
val fold: (k -> v -> 'a -> 'a) -> 'a -> 'a
end
module Make (M: sig type v include Map.OrderedType end) : S
with type k = M.t
and type v = M.v =
struct
module Reg = Map.Make(M)
type v = M.v
type k = Reg.key
let registry: v Reg.t ref = ref Reg.empty
let register k v = registry := Reg.add k v !registry
let alter k f =
match Reg.find_opt k !registry with
| None -> ()
| Some v -> registry := Reg.add k (f v) !registry
let remove k = registry := Reg.remove k !registry
let query k = Reg.find_opt k !registry
let iter_p f = Lwt.join (Reg.fold (fun k v acc -> (f k v) :: acc) !registry [])
let fold f a = Reg.fold f !registry a
end

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src/lib_stdlib/registry.mli Normal file
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(*****************************************************************************)
(* *)
(* Open Source License *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
(* *)
(* Permission is hereby granted, free of charge, to any person obtaining a *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
(* and/or sell copies of the Software, and to permit persons to whom the *)
(* Software is furnished to do so, subject to the following conditions: *)
(* *)
(* The above copyright notice and this permission notice shall be included *)
(* in all copies or substantial portions of the Software. *)
(* *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
(* DEALINGS IN THE SOFTWARE. *)
(* *)
(*****************************************************************************)
(** A simple imperative map *)
module type S = sig
type k
type v
val register: k -> v -> unit
val alter: k -> (v -> v) -> unit
val remove: k -> unit
val query: k -> v option
val iter_p: (k -> v -> unit Lwt.t) -> unit Lwt.t
val fold: (k -> v -> 'a -> 'a) -> 'a -> 'a
end
module Make (M: sig type v include Map.OrderedType end) : S
with type k = M.t
and type v = M.v