Struct icu::locale::extensions::unicode::Unicode

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pub struct Unicode {
    pub keywords: Keywords,
    pub attributes: Attributes,
}
Expand description

Unicode Extensions provide information about user preferences in a given locale.

A list of Unicode BCP47 U Extensions as defined in Unicode Locale Identifier specification.

Unicode extensions provide subtags that specify language and/or locale-based behavior or refinements to language tags, according to work done by the Unicode Consortium. (See RFC 6067 for details).

§Examples

use icu::locale::extensions::unicode::{key, value};
use icu::locale::Locale;

let loc: Locale =
    "de-u-hc-h12-ca-buddhist".parse().expect("Parsing failed.");

assert_eq!(
    loc.extensions.unicode.keywords.get(&key!("ca")),
    Some(&value!("buddhist"))
);

Fields§

§keywords: Keywords

The key-value pairs present in this locale extension, with each extension key subtag associated to its provided value subtag.

§attributes: Attributes

A canonically ordered sequence of single standalone subtags for this locale extension.

Implementations§

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impl Unicode

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pub const fn new() -> Unicode

Returns a new empty map of Unicode extensions. Same as default(), but is const.

§Examples
use icu::locale::extensions::unicode::Unicode;

assert_eq!(Unicode::new(), Unicode::default());
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pub fn try_from_str(s: &str) -> Result<Unicode, ParseError>

A constructor which takes a str slice, parses it and produces a well-formed Unicode.

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pub fn try_from_utf8(code_units: &[u8]) -> Result<Unicode, ParseError>

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pub fn is_empty(&self) -> bool

Returns true if there list of keywords and attributes is empty.

§Examples
use icu::locale::Locale;

let loc: Locale = "en-US-u-foo".parse().expect("Parsing failed.");

assert!(!loc.extensions.unicode.is_empty());
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pub fn clear(&mut self)

Clears all Unicode extension keywords and attributes, effectively removing the Unicode extension.

§Example
use icu::locale::Locale;

let mut loc: Locale =
    "und-t-mul-u-hello-ca-buddhist-hc-h12".parse().unwrap();
loc.extensions.unicode.clear();
assert_eq!(loc, "und-t-mul".parse().unwrap());
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pub fn total_cmp(&self, other: &Unicode) -> Ordering

Returns an ordering suitable for use in BTreeSet.

The ordering may or may not be equivalent to string ordering, and it may or may not be stable across ICU4X releases.

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impl Unicode

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pub fn to_string(&self) -> String

Converts the given value to a String.

Under the hood, this uses an efficient [Writeable] implementation. However, in order to avoid allocating a string, it is more efficient to use [Writeable] directly.

Trait Implementations§

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impl Clone for Unicode

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fn clone(&self) -> Unicode

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Unicode

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for Unicode

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fn default() -> Unicode

Returns the “default value” for a type. Read more
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impl Display for Unicode

This trait is implemented for compatibility with fmt!. To create a string, [Writeable::write_to_string] is usually more efficient.

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl FromStr for Unicode

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type Err = ParseError

The associated error which can be returned from parsing.
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fn from_str(s: &str) -> Result<Unicode, <Unicode as FromStr>::Err>

Parses a string s to return a value of this type. Read more
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impl Hash for Unicode

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fn hash<__H>(&self, state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for Unicode

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fn eq(&self, other: &Unicode) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Writeable for Unicode

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fn write_to<W>(&self, sink: &mut W) -> Result<(), Error>
where W: Write + ?Sized,

Writes a string to the given sink. Errors from the sink are bubbled up. The default implementation delegates to write_to_parts, and discards any Part annotations.
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fn writeable_length_hint(&self) -> LengthHint

Returns a hint for the number of UTF-8 bytes that will be written to the sink. Read more
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fn write_to_parts<S>(&self, sink: &mut S) -> Result<(), Error>
where S: PartsWrite + ?Sized,

Write bytes and Part annotations to the given sink. Errors from the sink are bubbled up. The default implementation delegates to write_to, and doesn’t produce any Part annotations.
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fn write_to_string(&self) -> Cow<'_, str>

Creates a new String with the data from this Writeable. Like ToString, but smaller and faster. Read more
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impl Eq for Unicode

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impl StructuralPartialEq for Unicode

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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