cycle_repr.ml
(*****************************************************************************)
(* *)
(* Open Source License *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
(* Copyright (c) 2020 Metastate AG <hello@metastate.dev> *)
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(*****************************************************************************)
type t = int32
type cycle = t
let encoding = Data_encoding.int32
let rpc_arg = RPC_arg.like RPC_arg.uint31 ~descr:"A cycle integer" "block_cycle"
let pp ppf cycle = Format.fprintf ppf "%ld" cycle
include (Compare.Int32 : Compare.S with type t := t)
module Map = Map.Make (Compare.Int32)
let root = 0l
let succ = Int32.succ
let pred = function 0l -> None | i -> Some (Int32.pred i)
let add c i =
assert (Compare.Int.(i >= 0)) ;
Int32.add c (Int32.of_int i)
let sub c i =
assert (Compare.Int.(i >= 0)) ;
let r = Int32.sub c (Int32.of_int i) in
if Compare.Int32.(r < 0l) then None else Some r
let diff = Int32.sub
let to_int32 i = i
let of_int32_exn l =
if Compare.Int32.(l >= 0l) then l else invalid_arg "Cycle_repr.of_int32_exn"
let of_string_exn s =
let int32_opt = Int32.of_string_opt s in
match int32_opt with
| None -> invalid_arg "Cycle_repr.of_string_exn"
| Some int32 -> of_int32_exn int32
let ( ---> ) = Misc.( ---> )
module Index = struct
type t = cycle
let path_length = 1
let to_path c l = Int32.to_string (to_int32 c) :: l
let of_path = function [s] -> Int32.of_string_opt s | _ -> None
let rpc_arg = rpc_arg
let encoding = encoding
let compare = compare
end