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(* Open Source License                                                       *)
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(* Copyright (c) 2022 Trili Tech, <contact@trili.tech>                       *)
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(** The values are versioned, to let the possibility to modify
    the values in future iterations of the protocol.

    We allow the possibility to modify the values by introducing
    a {!versioned} value that is the only values written in the storage.
    
    In future versions, the versioning is supposed to let us reinterpret old
    stored values within the new protocol implementation. That is, each
    access to the storage will transform old stored values to the
    current version.
*)

module type S = sig
  type t

  type versioned

  val versioned_encoding : versioned Data_encoding.t

  val of_versioned : versioned -> t

  val to_versioned : t -> versioned
end