(*****************************************************************************)
(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
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(* copy of this software and associated documentation files (the "Software"),*)
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include Compare.Int32

type roll = t

let encoding = Data_encoding.int32

let first = 0l

let succ i = Int32.succ i

let random sequence ~bound = Seed_repr.take_int32 sequence bound

let rpc_arg = RPC_arg.like RPC_arg.int32 "roll"

let to_int32 v = v

module Index = struct
  type t = roll

  let path_length = 3

  let to_path roll l =
    (Int32.to_string @@ Int32.logand roll (Int32.of_int 0xff))
    :: ( Int32.to_string
       @@ Int32.logand (Int32.shift_right_logical roll 8) (Int32.of_int 0xff)
       )
    :: Int32.to_string roll :: l

  let of_path = function
    | _ :: _ :: s :: _ -> (
      try Some (Int32.of_string s) with _ -> None )
    | _ ->
        None

  let rpc_arg = rpc_arg

  let encoding = encoding

  let compare = compare
end