ByteMemTable.retained_bytes.keep.go: def of mylsm-lsm-store@0.6.0.1
Import: import mylsm-lsm-store@0.6.0.1/src/ByteMemTable.bend as ByteMemTable
Lines 477-498 of mylsm-lsm-store@0.6.0.1/src/ByteMemTable.bend: https://jend.leeeet.dev/read.txt?path=mylsm-lsm-store@0.6.0.1/src/ByteMemTable.bend&start_line=477&end_line=498

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

def retained_bytes.keep.go(
  entries: List<&1, Entry>,
  reversed: List<&1, Entry>,
  total: Nat
) -> List<&1, Entry> & Nat:
  match entries:
    case Nil{}:
      (List.reverse(&1, Entry, reversed), total)
    case Con{Entry{key, value}, tail}:
      match key:
        case Bytes.Bytes{+key_len, key_buffer}:
          match value:
            case None{}:
              retained_bytes.keep.go(tail,
                Con{Entry{Bytes.Bytes{key_len, key_buffer}, None{}}, reversed},
                Nat.add(total, Nat.add(32n, U32.to_nat(key_len))))
            case Some{Bytes.Bytes{+value_len, value_buffer}}:
              retained_bytes.keep.go(tail,
                Con{Entry{Bytes.Bytes{key_len, key_buffer},
                  Some{Bytes.Bytes{value_len, value_buffer}}}, reversed},
                Nat.add(total, Nat.add(Nat.add(32n, U32.to_nat(key_len)),
                  U32.to_nat(value_len))))

Uses (10):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.reverse
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  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=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_nat
  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/ByteMemTable.bend&name=Entry