syndicate-nim/src/syndicate/protocols/protocol.nim

import
  preserves

type
  Error* {.preservesRecord: "error".} = object
    `message`*: string
    `detail`*: Value

  Turn* = seq[TurnEvent]
  Message* {.preservesRecord: "message".} = object
    `body`*: Assertion

  Retract* {.preservesRecord: "retract".} = object
    `handle`*: Handle

  Assert* {.preservesRecord: "assert".} = object
    `assertion`*: Assertion
    `handle`*: Handle

  Extension* = Value
  Sync* {.preservesRecord: "sync".} = object
    `peer`* {.preservesEmbedded.}: Value

  TurnEvent* {.preservesTuple.} = object
    `oid`*: Oid
    `event`*: Event

  Oid* = BiggestInt
  Assertion* = Value
  Handle* = BiggestInt
  PacketKind* {.pure.} = enum
    `Turn`, `Error`, `Extension`
  `Packet`* {.preservesOr.} = object
    case orKind*: PacketKind
    of PacketKind.`Turn`:
        `turn`* {.preservesEmbedded.}: Turn

    of PacketKind.`Error`:
        `error`*: Error

    of PacketKind.`Extension`:
        `extension`*: Extension

  
  EventKind* {.pure.} = enum
    `Assert`, `Retract`, `Message`, `Sync`
  `Event`* {.preservesOr.} = object
    case orKind*: EventKind
    of EventKind.`Assert`:
        `assert`*: Assert

    of EventKind.`Retract`:
        `retract`*: Retract

    of EventKind.`Message`:
        `message`*: Message

    of EventKind.`Sync`:
        `sync`* {.preservesEmbedded.}: Sync

  
proc `$`*(x: Error | Turn | Message | Retract | Assert | Sync | TurnEvent | Oid |
    Handle |
    Packet |
    Event): string =
  `$`(toPreserves(x))

proc encode*(x: Error | Turn | Message | Retract | Assert | Sync | TurnEvent |
    Oid |
    Handle |
    Packet |
    Event): seq[byte] =
  encode(toPreserves(x))