CursorOpenCodec.field.sized.checked: def of mylsm-lsm-store@0.6.0.1
Import: import mylsm-lsm-store@0.6.0.1/src/coordinator/CursorOpenCodec.bend as CursorOpenCodec
Lines 73-91 of mylsm-lsm-store@0.6.0.1/src/coordinator/CursorOpenCodec.bend: https://jend.leeeet.dev/read.txt?path=mylsm-lsm-store@0.6.0.1/src/coordinator/CursorOpenCodec.bend&start_line=73&end_line=91

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

# Slices a validated span using separate copies for its start and end offsets.
def field.sized.checked(
  payload: Bytes.Bytes,
  offsets: U32 & U32 & U32,
  lengths: U32 & U32,
  fits: Bool
) -> BoundResult:
  match offsets:
    case (slice_offset, (next_offset, _)):
      match lengths:
        case (slice_length, next_length):
          match fits:
            case True{}:
              field.sized.sliced(Bytes.slice(payload,
                U32.from_nat(Nat.add(U32.to_nat(slice_offset), 4n)),
                slice_length),
                U32.from_nat(Nat.add(Nat.add(U32.to_nat(next_offset), 4n),
                  U32.to_nat(next_length))))
            case False{}: BoundMalformed{}

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  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
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.from_nat
  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=bend-kit-bytes@0.3.3.0/bytes.bend&name=slice
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/coordinator/CursorOpenCodec.bend&name=BoundResult
  https://jend.leeeet.dev/definition.txt?path=mylsm-lsm-store@0.6.0.1/src/coordinator/CursorOpenCodec.bend&name=field.sized.sliced