ext_spec.ml

(* Copyright (C) 2020- Hongbo Zhang, Authors of ReScript
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * In addition to the permissions granted to you by the LGPL, you may combine
 * or link a "work that uses the Library" with a publicly distributed version
 * of this file to produce a combined library or application, then distribute
 * that combined work under the terms of your choosing, with no requirement
 * to comply with the obligations normally placed on you by section 4 of the
 * LGPL version 3 (or the corresponding section of a later version of the LGPL
 * should you choose to use a later version).
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *)

(* A small module which is also used by {!Bsb_helper} *)
type 'a t = (string * 'a * string) array

let rec unsafe_loop i (l : 'a t) n x =
  if i = n then None
  else
    let y1, y2, _ = Array.unsafe_get l i in
    if y1 = x then Some y2 else unsafe_loop (i + 1) l n x

let assoc3 (l : 'a t) (x : string) : 'a option =
  let n = Array.length l in
  unsafe_loop 0 l n x