62 lines
2.8 KiB
OCaml
62 lines
2.8 KiB
OCaml
(*****************************************************************************)
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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 error += Invalid_fitness (* `Permanent *)
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let () =
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register_error_kind
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`Permanent
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~id:"invalid_fitness"
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~title:"Invalid fitness"
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~description:"Fitness representation should be exactly 8 bytes long."
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~pp:(fun ppf () -> Format.fprintf ppf "Invalid fitness")
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Data_encoding.empty
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(function Invalid_fitness -> Some () | _ -> None)
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(fun () -> Invalid_fitness)
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let int64_to_bytes i =
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let b = MBytes.create 8 in
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MBytes.set_int64 b 0 i;
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b
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let int64_of_bytes b =
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if Compare.Int.(MBytes.length b <> 8) then
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error Invalid_fitness
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else
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ok (MBytes.get_int64 b 0)
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let from_int64 fitness =
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[ MBytes.of_string Constants_repr.version_number ;
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int64_to_bytes fitness ]
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let to_int64 = function
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| [ version ;
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fitness ]
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when Compare.String.
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(MBytes.to_string version = Constants_repr.version_number) ->
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int64_of_bytes fitness
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| [] -> ok 0L
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| _ -> error Invalid_fitness
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