logos-storage-nim/dagger/blockstream/chunkedblockstream.nim

## Nim-Dagger
## Copyright (c) 2021 Status Research & Development GmbH
## Licensed under either of
##  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
##  * MIT license ([LICENSE-MIT](LICENSE-MIT))
## at your option.
## This file may not be copied, modified, or distributed except according to
## those terms.

{.push raises: [Defect].}

import pkg/questionable
import pkg/questionable/results

import ./blockstream
import ../chunker

type
  ChunkedBlockStreamRef* = ref object of BlockStreamRef
    chunker*: Chunker

method nextBlock*(c: ChunkedBlockStreamRef): ?!Block =
  let data: seq[byte] = c.chunker.getBytes()
  if data.len > 0:
    return Block.new(data)

func new*(T: type ChunkedBlockStreamRef, chunker: Chunker): T =
  T(chunker: chunker)