harper_core/
char_string.rs

1use smallvec::SmallVec;
2
3/// A char sequence that improves cache locality.
4/// Most English words are fewer than 12 characters.
5pub type CharString = SmallVec<[char; 12]>;
6
7/// Extensions to character sequences that make them easier to wrangle.
8pub trait CharStringExt {
9    fn to_lower(&self) -> CharString;
10    fn to_string(&self) -> String;
11}
12
13impl CharStringExt for [char] {
14    fn to_lower(&self) -> CharString {
15        let mut out = CharString::with_capacity(self.len());
16
17        out.extend(self.iter().flat_map(|v| v.to_lowercase()));
18
19        out
20    }
21    fn to_string(&self) -> String {
22        self.iter().collect()
23    }
24}
25
26macro_rules! char_string {
27    ($string:literal) => {{
28        use crate::char_string::CharString;
29
30        $string.chars().collect::<CharString>()
31    }};
32}
33
34pub(crate) use char_string;
harper_core/char_string.rs

harper_core/
char_string.rs
