Struct BytesReader 

pub struct BytesReader(pub Arc<[u8]>);

A RangeReader over owned, shared bytes (a whole file image held in memory — the resident opens of a 0x06 file go through the lazy machinery over one of these).

Tuple Fields

0: Arc<[u8]>

Trait Implementations

impl RangeReader for BytesReader

fn len(&self) -> u64

Total resource length in bytes.

fn read_at(&self, offset: u64, len: u64) -> Result<Vec<u8>, Error>

Read len bytes starting at offset. Implementations should error on an out-of-bounds range rather than truncating.

fn is_empty(&self) -> bool

True when the resource is empty.

fn read_many(&self, ranges: &[(u64, u64)]) -> Result<Vec<Vec<u8>>, Error>

Read several (offset, len) ranges, returning each range’s bytes in request order. These ranges are independent, so a reader whose backing store is high-latency but parallelizable (an HTTP client) overrides this to issue the reads concurrently — turning N round trips into ~N/P. The default fetches them sequentially. Any range failing fails the batch.

fn concurrency(&self) -> usize

How many ranges this reader can usefully have in flight at once — the planner’s hint for probe-vs-scan and batch-size decisions (a phone’s serial sync-XHR reader reports 1; the CLI’s threaded HTTP client and the browser’s concurrent-fetch variants report their fan-out). Purely advisory: correctness never depends on it. Defaults to 1 (sequential).