79 lines
3.2 KiB
OCaml
79 lines
3.2 KiB
OCaml
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(*****************************************************************************)
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(* *)
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(* Open Source License *)
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(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
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(* *)
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(* Permission is hereby granted, free of charge, to any person obtaining a *)
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(* copy of this software and associated documentation files (the "Software"),*)
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(* to deal in the Software without restriction, including without limitation *)
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(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
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(* and/or sell copies of the Software, and to permit persons to whom the *)
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(* Software is furnished to do so, subject to the following conditions: *)
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(* *)
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(* The above copyright notice and this permission notice shall be included *)
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(* in all copies or substantial portions of the Software. *)
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(* *)
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(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
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(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
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(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
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(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
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(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
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(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
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(* DEALINGS IN THE SOFTWARE. *)
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(* *)
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(*****************************************************************************)
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type t = Int64.t
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type period = t
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include (Compare.Int64 : Compare.S with type t := t)
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let encoding = Data_encoding.int64
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let pp ppf v = Format.fprintf ppf "%Ld" v
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type error += (* `Permanent *)
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| Malformed_period
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| Invalid_arg
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let () =
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let open Data_encoding in
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(* Malformed period *)
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register_error_kind
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`Permanent
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~id:"malformed_period"
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~title:"Malformed period"
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~description:"Period is negative."
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~pp:(fun ppf () -> Format.fprintf ppf "Malformed period")
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empty
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(function Malformed_period -> Some () | _ -> None)
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(fun () -> Malformed_period) ;
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(* Invalid arg *)
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register_error_kind
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`Permanent
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~id:"invalid_arg"
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~title:"Invalid arg"
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~description:"Negative multiple of periods are not allowed."
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~pp:(fun ppf () -> Format.fprintf ppf "Invalid arg")
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empty
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(function Invalid_arg -> Some () | _ -> None)
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(fun () -> Invalid_arg)
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let of_seconds t =
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if Compare.Int64.(t >= 0L)
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then ok t
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else error Malformed_period
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let to_seconds t = t
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let of_seconds_exn t =
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match of_seconds t with
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| Ok t -> t
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| _ -> invalid_arg "Period.of_seconds_exn"
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let mult i p =
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(* TODO check overflow *)
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if Compare.Int32.(i < 0l)
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then error Invalid_arg
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else ok (Int64.mul (Int64.of_int32 i) p)
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let one_second = of_seconds_exn 1L
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let one_minute = of_seconds_exn 60L
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let one_hour = of_seconds_exn 3600L
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