Fs.read_at.start.validated: def of mylsm-lsm-store@0.6.0.1
Import: import mylsm-lsm-store@0.6.0.1/src/Fs.bend as Fs
Lines 323-337 of mylsm-lsm-store@0.6.0.1/src/Fs.bend: https://jend.leeeet.dev/read.txt?path=mylsm-lsm-store@0.6.0.1/src/Fs.bend&start_line=323&end_line=337

import Base
import bend-kit-bytes@0.3.2.0/bytes.bend as StorageBytes

def read_at.start.validated(
  file: File,
  offset: Nat,
  maxima: Nat & Nat,
  valid: Bool
) -> IO(File & Result<&1, &1, U32 & String, StorageBytes.Bytes>):
  match maxima:
    case (for_fuel, for_remaining):
      match valid:
        case False{}:
          IO.pure(File & Result<&1, &1, U32 & String, StorageBytes.Bytes>,
            (file, Fail{(22, "positional read range exceeds offset limits")}))
        case True{}:
          read_at.loop(Nat.add(Nat.mul(3n, for_fuel), 3n),
            ReadAtNeed{file, offset, for_remaining, Nil{}})

Uses (16):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=File
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=IO.pure
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=Bytes
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/Fs.bend&name=ReadAtState
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/Fs.bend&name=read_at.loop