nim-datastore/datastore/nullds.nim

import pkg/chronos
import pkg/questionable
import pkg/questionable/results
import pkg/upraises

import ./datastore

export datastore

push: {.upraises: [].}

type
  NullDatastore* = ref object of Datastore

proc new*(T: type NullDatastore): T =
  T()

method contains*(
  self: NullDatastore,
  key: Key): Future[?!bool] {.async, locks: "unknown".} =

  return success false

method delete*(
  self: NullDatastore,
  key: Key): Future[?!void] {.async, locks: "unknown".} =

  return success()

method get*(
  self: NullDatastore,
  key: Key): Future[?!(?seq[byte])] {.async, locks: "unknown".} =

  return success seq[byte].none

method put*(
  self: NullDatastore,
  key: Key,
  data: seq[byte]): Future[?!void] {.async, locks: "unknown".} =

  return success()

iterator query*(
  self: NullDatastore,
  query: Query): Future[QueryResponse] =

  discard