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(****************************************************************************)
(*                           the diy toolsuite                              *)
(*                                                                          *)
(* Jade Alglave, University College London, UK.                             *)
(* Luc Maranget, INRIA Paris-Rocquencourt, France.                          *)
(*                                                                          *)
(* Copyright 2022-present Institut National de Recherche en Informatique et *)
(* en Automatique, ARM Ltd and the authors. All rights reserved.            *)
(*                                                                          *)
(* This software is governed by the CeCILL-B license under French law and   *)
(* abiding by the rules of distribution of free software. You can use,      *)
(* modify and/ or redistribute the software under the terms of the CeCILL-B *)
(* license as circulated by CEA, CNRS and INRIA at the following URL        *)
(* "http://www.cecill.info". We also give a copy in LICENSE.txt.            *)
(****************************************************************************)

type t =
  | Synchronous
  | Asynchronous
  | Asymmetric

let default = Synchronous

let tags =  [ "synchronous"; "sync"; "asynchronous"; "async"; "asymmetric"; "asym" ]

let parse = function
  | "synchronous"|"sync" -> Some Synchronous
  | "asynchronous"|"async" -> Some Asynchronous
  | "asymmetric"|"asym" -> Some Asymmetric
  | _ -> None

let pp = function
  | Synchronous -> "synchronous"
  | Asynchronous -> "asynchronous"
  | Asymmetric -> "asymmetric"