91 lines
3.4 KiB
OCaml
91 lines
3.4 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 = int32
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type raw_level = t
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include (Compare.Int32 : Compare.S with type t := t)
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let encoding = Data_encoding.int32
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let pp ppf level = Format.fprintf ppf "%ld" level
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let rpc_arg =
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let construct raw_level = Int32.to_string raw_level in
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let destruct str =
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match Int32.of_string str with
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| exception _ -> Error "Cannot parse level"
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| raw_level -> Ok raw_level in
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RPC_arg.make
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~descr:"A level integer"
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~name: "block_level"
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~construct
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~destruct
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()
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let root = 0l
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let succ = Int32.succ
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let pred l =
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if l = 0l
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then None
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else Some (Int32.pred l)
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let diff = Int32.sub
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let to_int32 l = l
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let of_int32_exn l =
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if Compare.Int32.(l >= 0l)
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then l
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else invalid_arg "Level_repr.of_int32"
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type error += Unexpected_level of Int32.t (* `Permanent *)
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let () =
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register_error_kind
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`Permanent
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~id:"unexpected_level"
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~title:"Unexpected level"
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~description:"Level must be non-negative."
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~pp:(fun ppf l ->
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Format.fprintf ppf "The level is %s but should be non-negative." (Int32.to_string l))
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Data_encoding.(obj1 (req "level" int32))
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(function Unexpected_level l -> Some l | _ -> None)
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(fun l -> Unexpected_level l)
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let of_int32 l =
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try Ok (of_int32_exn l)
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with _ -> Error [Unexpected_level l]
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module Index = struct
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type t = raw_level
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let path_length = 1
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let to_path level l = Int32.to_string level :: l
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let of_path = function
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| [s] -> begin
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try Some (Int32.of_string s)
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with _ -> None
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end
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| _ -> None
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let rpc_arg = rpc_arg
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let encoding = encoding
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let compare = compare
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end
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