fontconfig_actor/src/protocol.nim

import
  std/typetraits, preserves, std/tables

type
  Serve* {.preservesRecord: "serve".} = object
    `cap`* {.preservesEmbedded.}: Preserve[void]

  FontAssertion* {.preservesRecord: "fontconfig".} = object
    `pattern`*: Properties
    `attributes`*: Properties

  Properties* = Table[Symbol, Preserve[void]]
proc `$`*(x: Serve | FontAssertion | Properties): string =
  `$`(toPreserve(x))

proc encode*(x: Serve | FontAssertion | Properties): seq[byte] =
  encode(toPreserve(x))