Struct aho_corasick::util::prefilter::Builder

pub(crate) struct Builder {
    count: usize,
    ascii_case_insensitive: bool,
    start_bytes: StartBytesBuilder,
    rare_bytes: RareBytesBuilder,
    memmem: MemmemBuilder,
    packed: Option<Builder>,
    enabled: bool,
}

A builder for constructing the best possible prefilter. When constructed, this builder will heuristically select the best prefilter it can build, if any, and discard the rest.

Fields

count: usize

ascii_case_insensitive: bool

start_bytes: StartBytesBuilder

rare_bytes: RareBytesBuilder

memmem: MemmemBuilder

packed: Option<Builder>

enabled: bool

Implementations

impl Builder

pub(crate) fn new(kind: MatchKind) -> Builder

Create a new builder for constructing the best possible prefilter.

pub(crate) fn ascii_case_insensitive(self, yes: bool) -> Builder

Enable ASCII case insensitivity. When set, byte strings added to this builder will be interpreted without respect to ASCII case.

pub(crate) fn build(&self) -> Option<Prefilter>

Return a prefilter suitable for quickly finding potential matches.

All patterns added to an Aho-Corasick automaton should be added to this builder before attempting to construct the prefilter.

pub(crate) fn add(&mut self, bytes: &[u8])

Add a literal string to this prefilter builder.

Trait Implementations

impl Debug for Builder

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

Formats the value using the given formatter.