SstCursor.next: def of mylsm-lsm-store@0.6.0.1
Import: import mylsm-lsm-store@0.6.0.1/src/scan/SstCursor.bend as SstCursor
Lines 406-425 of mylsm-lsm-store@0.6.0.1/src/scan/SstCursor.bend: https://jend.leeeet.dev/read.txt?path=mylsm-lsm-store@0.6.0.1/src/scan/SstCursor.bend&start_line=406&end_line=425

import Base
import mylsm-lsm-store@0.6.0.1/src/scan/ByteBlockReader.bend as ByteBlockReader

# Returns the next bounded record, range skip, end, or terminal read error.
def next(cursor: Cursor) -> IO(Step):
  match cursor:
    case Active{inner, bounds}:
      match inner:
        case ByteBlockReader.EntryReady{reader, entries}:
          match entries:
            case Con{entry, tail}:
              scan.entry(entry, ByteBlockReader.EntryReady{reader, tail}, bounds)
            case Nil{}:
              scan.start(ByteBlockReader.transition_budget(reader), bounds)
        case ByteBlockReader.EntryEnded{}:
          IO.pure(Step, End{})
        case ByteBlockReader.EntryClosed{}:
          IO.pure(Step, End{})
        case ByteBlockReader.EntryFailed{error}:
          IO.pure(Step, Error{error})
    case Ended{}: IO.pure(Step, End{})
    case Closed{}: IO.pure(Step, End{})
    case Failed{error}: IO.pure(Step, Error{error})

Uses (9):
  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=mylsm-lsm-store@0.6.0.1/src/scan/ByteBlockReader.bend&name=EntryCursor
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/scan/ByteBlockReader.bend&name=transition_budget
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/scan/SstCursor.bend&name=Cursor
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/scan/SstCursor.bend&name=Step
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/scan/SstCursor.bend&name=scan.entry
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/scan/SstCursor.bend&name=scan.start