Struct Regexp 

pub struct Regexp { /* private fields */ }

A parsed pattern, plus the group count needed to size the capture vector.

Implementations

impl Regexp

pub fn parse(pattern: &str) -> Regexp

Parse a Str-dialect pattern. Never fails: malformed input degrades to the most literal reading, because a raised error here would take down a whole document over a single bad highlighting rule.

pub fn match_at( &self, input: &[char], start: usize, ) -> Result<Option<usize>, GaveUp>

Anchored match at start, returning the end offset (in chars) of the match — Str.string_match plus Str.match_end.

A pattern that exhausts its step budget reports Err(GaveUp) rather than “no match”: see [Budget]. Silently answering None would turn a hang into wrong output, which is worse.

pub fn search_from( &self, input: &[char], start: usize, ) -> Result<Option<(usize, usize)>, GaveUp>

Leftmost match at or after start — Str.search_forward.

Trait Implementations

impl Clone for Regexp

fn clone(&self) -> Regexp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Regexp

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

Formats the value using the given formatter.

impl Eq for Regexp

impl PartialEq for Regexp

fn eq(&self, other: &Regexp) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Regexp