package electrod

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Source file Symbol.ml

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(*******************************************************************************
 * electrod - a model finder for relational first-order linear temporal logic
 * 
 * Copyright (C) 2016-2020 ONERA
 * Authors: Julien Brunel (ONERA), David Chemouil (ONERA)
 * 
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 * 
 * SPDX-License-Identifier: MPL-2.0
 * License-Filename: LICENSE.md
 ******************************************************************************)

open Containers
module H = Hashcons

type t = string H.hash_consed

module S = H.Make (struct
  type t = string

  let hash = String.hash

  let equal = String.equal
end)

(* ********************* *)
(* table for hashconsing *)
(* ********************* *)
let table = S.create 271

(* ********************* *)

let make s = S.hashcons table s

let hash sym = sym.H.hkey

let compare s1 s2 = s1.H.tag - s2.H.tag

let compare_string s1 s2 = String.compare s1.H.node s2.H.node

let equal x1 x2 = Stdlib.(x1 == x2)

let pp out at =
  (* Format.fprintf out "%s/%d" at.H.node at.H.tag *)
  Format.fprintf out "%s" at.H.node


include Intf.Print.Mixin (struct
  type nonrec t = t

  let pp = pp
end)
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