Struct EmptyDocSet 

pub struct EmptyDocSet;

DocSet that is always empty.

Trait Implementations

impl DocSet for EmptyDocSet

fn doc(&self) -> DocId

Current document ID, or TERMINATED if exhausted.

fn advance(&mut self) -> DocId

Advance to the next document. Returns the new doc ID or TERMINATED.

fn seek(&mut self, _target: DocId) -> DocId

Seek to the first document >= target. Returns doc ID or TERMINATED.

fn size_hint(&self) -> u32

Estimated number of remaining documents.

fn supports_doc_batches(&self) -> bool

Whether compact membership batches amortize this cursor’s work.

fn fill_doc_batch(&mut self, docs: &mut DocBatch) -> usize

Consume up to 128 exact sorted matches starting at doc(), leaving the cursor on the first unconsumed match. Zero means exhausted.

fn retain_doc_batch(&mut self, docs: &mut DocBatch, len: usize) -> usize

Retain matches from the sorted unique prefix docs[..len]. The cursor remains at or beyond the last probe; earlier IDs stay consumed.

fn supports_doc_windows(&self) -> bool

Whether this cursor benefits from bounded score-free membership batches.

fn fill_doc_window(&mut self, base: DocId, bits: &mut DocWindow)

Consume exact matches in [base, base + DOC_WINDOW_SIZE), replacing bits, and leave the cursor on its first match at or after the end. Calls are forward-only; previously consumed documents stay consumed.