1 | // This file is part of ICU4X. For terms of use, please see the file |
2 | // called LICENSE at the top level of the ICU4X source tree |
3 | // (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ). |
4 | |
5 | impl_tinystr_subtag!( |
6 | /// A single item used in a list of [`Other`](super::Other) extensions. |
7 | /// |
8 | /// The subtag has to be an ASCII alphanumerical string no shorter than |
9 | /// two characters and no longer than eight. |
10 | /// |
11 | /// # Examples |
12 | /// |
13 | /// ``` |
14 | /// use icu::locid::extensions::other::subtag; |
15 | /// |
16 | /// assert_eq!(subtag!("Foo").as_str(), "foo"); |
17 | /// ``` |
18 | Subtag, |
19 | extensions::other, |
20 | subtag, |
21 | extensions_other_subtag, |
22 | 2..=8, |
23 | s, |
24 | s.is_ascii_alphanumeric(), |
25 | s.to_ascii_lowercase(), |
26 | s.is_ascii_alphanumeric() && s.is_ascii_lowercase(), |
27 | InvalidExtension, |
28 | ["foo12" ], |
29 | ["y" , "toolooong" ], |
30 | ); |
31 | |
32 | impl Subtag { |
33 | pub(crate) const fn valid_key(v: &[u8]) -> bool { |
34 | 2 <= v.len() && v.len() <= 8 |
35 | } |
36 | } |
37 | |