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git.proxmox.com Git - rustc.git/blob - vendor/regex-1.4.6/src/find_byte.rs
1 /// Searches for the given needle in the given haystack.
3 /// If the perf-literal feature is enabled, then this uses the super optimized
4 /// memchr crate. Otherwise, it uses the naive byte-at-a-time implementation.
5 pub fn find_byte(needle
: u8, haystack
: &[u8]) -> Option
<usize> {
6 #[cfg(not(feature = "perf-literal"))]
7 fn imp(needle
: u8, haystack
: &[u8]) -> Option
<usize> {
8 haystack
.iter().position(|&b
| b
== needle
)
11 #[cfg(feature = "perf-literal")]
12 fn imp(needle
: u8, haystack
: &[u8]) -> Option
<usize> {
14 memchr(needle
, haystack
)