unicode_general_category/
category.rs

1include!(concat!(env!("OUT_DIR"), "/category.rs")); // generated by build.rs
2
3const MASK: usize = BLOCK_SIZE - 1;
4const SHIFT: usize = MASK.count_ones() as usize;
5
6/// Look up the general category for a character.
7///
8/// ### Example
9///
10/// ```
11/// use unicode_general_category::{get_general_category, GeneralCategory};
12///
13/// assert_eq!(get_general_category('A'), GeneralCategory::UppercaseLetter);
14/// ```
15pub fn get_general_category(chr: char) -> GeneralCategory {
16    let u = chr as u32;
17
18    if u <= LAST_CODEPOINT {
19        return CATEGORY_BLOCKS
20            [CATEGORY_BLOCK_OFFSETS[u as usize >> SHIFT] as usize + (u as usize & MASK)];
21    } else {
22        return PrivateUse;
23    }
24}

unicode_general_category/category.rs

unicode_general_category/
category.rs