diff options
Diffstat (limited to 'vendor/icu_locid/src/extensions/unicode/key.rs')
-rw-r--r-- | vendor/icu_locid/src/extensions/unicode/key.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/vendor/icu_locid/src/extensions/unicode/key.rs b/vendor/icu_locid/src/extensions/unicode/key.rs new file mode 100644 index 000000000..bdfdd4e5c --- /dev/null +++ b/vendor/icu_locid/src/extensions/unicode/key.rs @@ -0,0 +1,31 @@ +// This file is part of ICU4X. For terms of use, please see the file +// called LICENSE at the top level of the ICU4X source tree +// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ). + +impl_tinystr_subtag!( + /// A key used in a list of [`Keywords`](super::Keywords). + /// + /// The key has to be a two ASCII alphanumerical characters long, with the first + /// character being alphanumeric, and the second being alphabetic. + /// + /// + /// # Examples + /// + /// ``` + /// use icu::locid::extensions::unicode::Key; + /// + /// assert!("ca".parse::<Key>().is_ok()); + /// ``` + Key, + extensions::unicode::Key, + extensions_unicode_key, + 2..=2, + s, + s.all_bytes()[0].is_ascii_alphanumeric() && s.all_bytes()[1].is_ascii_alphabetic(), + s.to_ascii_lowercase(), + (s.all_bytes()[0].is_ascii_lowercase() || s.all_bytes()[0].is_ascii_digit()) + && s.all_bytes()[1].is_ascii_lowercase(), + InvalidExtension, + ["ca", "8a"], + ["a", "a8", "abc"], +); |