Struct regex::bytes::NoExpand

pub struct NoExpand<'s>(pub &'s [u8]);

A helper type for forcing literal string replacement.

It can be used with routines like Regex::replace and Regex::replace_all to do a literal string replacement without expanding $name to their corresponding capture groups. This can be both convenient (to avoid escaping $, for example) and faster (since capture groups don’t need to be found).

's is the lifetime of the literal string to use.

Example

use regex::bytes::{NoExpand, Regex};

let re = Regex::new(r"(?<last>[^,\s]+),\s+(\S+)").unwrap();
let result = re.replace(b"Springsteen, Bruce", NoExpand(b"$2 $last"));
assert_eq!(result, &b"$2 $last"[..]);

Tuple Fields

0: &'s [u8]

Trait Implementations

impl<'s> Clone for NoExpand<'s>

fn clone(&self) -> NoExpand<'s>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'s> Debug for NoExpand<'s>

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

Formats the value using the given formatter.

impl<'s> Replacer for NoExpand<'s>

fn replace_append(&mut self, _: &Captures<'_>, dst: &mut Vec<u8>)

Appends possibly empty data to dst to replace the current match.

fn no_expansion(&mut self) -> Option<Cow<'_, [u8]>>

Return a fixed unchanging replacement byte string.

fn by_ref<'r>(&'r mut self) -> ReplacerRef<'r, Self>

Returns a type that implements Replacer, but that borrows and wraps this Replacer.