def block.checksum.valid.copies

mylsm-lsm-store@0.6.0.1 · src/scan/ByteBlockReader.bend:139

import Base
import mylsm-lsm-store@0.6.0.1/src/hub_sha/sha256.bend as SHA
import bend-kit-bytes@0.3.2.0/bytes.bend as Bytes

139def block.checksum.valid.copies(
140  copies: Bytes.Bytes & Bytes.Bytes,
141  +payload_length: U32
142) -> Bool:
143  match copies:
144    case (for_hash, for_checksum):
145      block.checksum.compare(Bytes.eq(
146        SHA.sha256_packed_bytes(bytes.slice.result(Bytes.slice(for_hash, 0,
147          U32.add(8, payload_length)))), bytes.slice.result(Bytes.slice(
148          for_checksum, U32.add(8, payload_length), 32))))