(*****************************************************************************) (* *) (* Open Source License *) (* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. *) (* *) (* Permission is hereby granted, free of charge, to any person obtaining a *) (* copy of this software and associated documentation files (the "Software"),*) (* to deal in the Software without restriction, including without limitation *) (* the rights to use, copy, modify, merge, publish, distribute, sublicense, *) (* and/or sell copies of the Software, and to permit persons to whom the *) (* Software is furnished to do so, subject to the following conditions: *) (* *) (* The above copyright notice and this permission notice shall be included *) (* in all copies or substantial portions of the Software. *) (* *) (* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*) (* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *) (* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *) (* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*) (* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *) (* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *) (* DEALINGS IN THE SOFTWARE. *) (* *) (*****************************************************************************) type t = int32 type raw_level = t include (Compare.Int32 : Compare.S with type t := t) let encoding = Data_encoding.int32 let pp ppf level = Format.fprintf ppf "%ld" level let rpc_arg = let construct raw_level = Int32.to_string raw_level in let destruct str = match Int32.of_string str with | exception _ -> Error "Cannot parse level" | raw_level -> Ok raw_level in RPC_arg.make ~descr:"A level integer" ~name: "block_level" ~construct ~destruct () let root = 0l let succ = Int32.succ let pred l = if l = 0l then None else Some (Int32.pred l) let diff = Int32.sub let to_int32 l = l let of_int32_exn l = if Compare.Int32.(l >= 0l) then l else invalid_arg "Level_repr.of_int32" type error += Unexpected_level of Int32.t (* `Permanent *) let () = register_error_kind `Permanent ~id:"unexpected_level" ~title:"Unexpected level" ~description:"Level must be non-negative." ~pp:(fun ppf l -> Format.fprintf ppf "The level is %s but should be non-negative." (Int32.to_string l)) Data_encoding.(obj1 (req "level" int32)) (function Unexpected_level l -> Some l | _ -> None) (fun l -> Unexpected_level l) let of_int32 l = try Ok (of_int32_exn l) with _ -> error (Unexpected_level l) module Index = struct type t = raw_level let path_length = 1 let to_path level l = Int32.to_string level :: l let of_path = function | [s] -> begin try Some (Int32.of_string s) with _ -> None end | _ -> None let rpc_arg = rpc_arg let encoding = encoding let compare = compare end