Struct PartialDescriptor 

pub struct PartialDescriptor { /* private fields */ }

A descriptor opened for seek-based partial reads.

Holds the small records read up front plus the on-disk locators of every object/channel/model record. Every read goes through an internal CountingReader, so bytes_read is a real, deterministic I/O figure.

Implementations

impl PartialDescriptor

pub fn open(path: &Path, limits: Limits) -> Result<PartialLoad>

Walk the framing of the descriptor at path, reading only the small records. Returns PartialLoad::Ineligible when the descriptor cannot be served lazily (no op table or external objects): the caller must then use the full path.

pub fn bytes_read(&self) -> u64

Real bytes fetched from the descriptor file by this loader.

pub fn source_len(&self) -> u64

Declared source length (from the INTEGRITY record).

pub fn source_sha256(&self) -> [u8; 32]

Declared whole-source SHA-256 (from the INTEGRITY record).

pub fn object_count(&self) -> usize

Number of raw object records in the descriptor.

pub fn graph_ops(&self) -> usize

Number of instructions in the reconstruction program.

Trait Implementations

impl Debug for PartialDescriptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl SourceServer for PartialDescriptor

fn serve_range(&self, offset: u64, len: u64, limits: Limits) -> Result<Vec<u8>>

Bytes of the source range [offset, offset + len).

fn serve_document(&self, _limits: Limits) -> Result<Vec<u8>>

The whole reconstructed source (only a DocumentExact node needs this).