Struct regex_automata::util::prefilter::byteset::ByteSet

pub(crate) struct ByteSet([bool; 256]);

Tuple Fields

0: [bool; 256]

Implementations

impl ByteSet

pub(crate) fn new<B: AsRef<[u8]>>( _kind: MatchKind, needles: &[B], ) -> Option<ByteSet>

Trait Implementations

impl Clone for ByteSet

fn clone(&self) -> ByteSet

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ByteSet

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

Formats the value using the given formatter.

impl PrefilterI for ByteSet

fn find(&self, haystack: &[u8], span: Span) -> Option<Span>

Run this prefilter on haystack[span.start..end] and return a matching span if one exists.

fn prefix(&self, haystack: &[u8], span: Span) -> Option<Span>

Returns the span of a prefix of haystack[span.start..span.end] if the prefilter matches.

fn memory_usage(&self) -> usize

Returns the heap memory, in bytes, used by the underlying prefilter.

fn is_fast(&self) -> bool

Implementations might return true here if they believe themselves to be “fast.” See Prefilter::is_fast for more details.