attribute.rs - mozsearch

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// 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!(

    /// An attribute used in a set of [`Attributes`](super::Attributes).

///

    /// An attribute has to be a sequence of alphanumerical characters no

    /// shorter than three and no longer than eight characters.

///

///

    /// # Examples

///

    /// ```

    /// use icu::locid::extensions::unicode::{attribute, Attribute};

///

    /// let attr: Attribute =

    ///     "buddhist".parse().expect("Failed to parse an Attribute.");

///

    /// assert_eq!(attr, attribute!("buddhist"));

    /// ```

    Attribute,

    extensions::unicode,

    attribute,

    extensions_unicode_attribute,

    3..=8,

s,

    s.is_ascii_alphanumeric(),

    s.to_ascii_lowercase(),

    s.is_ascii_alphanumeric() && s.is_ascii_lowercase(),

    InvalidExtension,

    ["foo12"],

    ["no", "toolooong"],

);