pub struct Attribute(/* private fields */);
Expand description
An attribute used in a set of Attributes
.
An attribute has to be a sequence of alphanumerical characters no shorter than three and no longer than eight characters.
§Examples
use icu::locale::extensions::unicode::{attribute, Attribute};
let attr: Attribute =
"buddhist".parse().expect("Failed to parse an Attribute.");
assert_eq!(attr, attribute!("buddhist"));
Implementations§
source§impl Attribute
impl Attribute
sourcepub const fn try_from_str(s: &str) -> Result<Attribute, ParseError>
pub const fn try_from_str(s: &str) -> Result<Attribute, ParseError>
sourcepub const fn try_from_utf8(code_units: &[u8]) -> Result<Attribute, ParseError>
pub const fn try_from_utf8(code_units: &[u8]) -> Result<Attribute, ParseError>
sourcepub const fn try_from_raw(raw: [u8; 8]) -> Result<Attribute, ParseError>
pub const fn try_from_raw(raw: [u8; 8]) -> Result<Attribute, ParseError>
Safely creates a Attribute
from its raw format
as returned by Self::into_raw
. Unlike Self::try_from_utf8
,
this constructor only takes normalized values.
sourcepub const unsafe fn from_raw_unchecked(v: [u8; 8]) -> Attribute
pub const unsafe fn from_raw_unchecked(v: [u8; 8]) -> Attribute
Unsafely creates a Attribute
from its raw format
as returned by Self::into_raw
. Unlike Self::try_from_utf8
,
this constructor only takes normalized values.
§Safety
This function is safe iff Self::try_from_raw
returns an Ok
. This is the case
for inputs that are correctly normalized.
sourcepub const fn into_raw(self) -> [u8; 8]
pub const fn into_raw(self) -> [u8; 8]
Deconstructs into a raw format to be consumed by
from_raw_unchecked
or
try_from_raw
.
sourcepub fn strict_cmp(self, other: &[u8]) -> Ordering
pub fn strict_cmp(self, other: &[u8]) -> Ordering
Compare with BCP-47 bytes.
The return value is equivalent to what would happen if you first converted
self
to a BCP-47 string and then performed a byte comparison.
This function is case-sensitive and results in a total order, so it is appropriate for
binary search. The only argument producing Ordering::Equal
is self.as_str().as_bytes()
.
sourcepub fn normalizing_eq(self, other: &str) -> bool
pub fn normalizing_eq(self, other: &str) -> bool
Compare with a potentially unnormalized BCP-47 string.
The return value is equivalent to what would happen if you first parsed the BCP-47 string and then performed a structural comparison.
Trait Implementations§
source§impl<'de> Deserialize<'de> for Attribute
impl<'de> Deserialize<'de> for Attribute
source§fn deserialize<D>(
deserializer: D,
) -> Result<Attribute, <D as Deserializer<'de>>::Error>where
D: Deserializer<'de>,
fn deserialize<D>(
deserializer: D,
) -> Result<Attribute, <D as Deserializer<'de>>::Error>where
D: Deserializer<'de>,
source§impl Display for Attribute
impl Display for Attribute
This trait is implemented for compatibility with fmt!
.
To create a string, [Writeable::write_to_string
] is usually more efficient.
source§impl From<Attribute> for TinyAsciiStr<8>
impl From<Attribute> for TinyAsciiStr<8>
source§fn from(input: Attribute) -> TinyAsciiStr<8>
fn from(input: Attribute) -> TinyAsciiStr<8>
source§impl NicheBytes<8> for Attribute
impl NicheBytes<8> for Attribute
const NICHE_BIT_PATTERN: [u8; 8] = tinystr::TinyAsciiStr<8>::NICHE_BIT_PATTERN
source§impl Ord for Attribute
impl Ord for Attribute
source§impl PartialOrd for Attribute
impl PartialOrd for Attribute
source§impl Serialize for Attribute
impl Serialize for Attribute
source§fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
source§impl ULE for Attribute
impl ULE for Attribute
source§fn validate_bytes(bytes: &[u8]) -> Result<(), UleError>
fn validate_bytes(bytes: &[u8]) -> Result<(), UleError>
&[u8]
. Read moresource§unsafe fn slice_from_bytes_unchecked(bytes: &[u8]) -> &[Self]
unsafe fn slice_from_bytes_unchecked(bytes: &[u8]) -> &[Self]
&[u8]
, and return it as &[Self]
with the same lifetime, assuming
that this byte slice has previously been run through Self::parse_bytes_to_slice()
with
success. Read moresource§impl Writeable for Attribute
impl Writeable for Attribute
source§fn write_to<W>(&self, sink: &mut W) -> Result<(), Error>
fn write_to<W>(&self, sink: &mut W) -> Result<(), Error>
write_to_parts
, and discards any
Part
annotations.source§fn writeable_length_hint(&self) -> LengthHint
fn writeable_length_hint(&self) -> LengthHint
source§fn write_to_string(&self) -> Cow<'_, str>
fn write_to_string(&self) -> Cow<'_, str>
String
with the data from this Writeable
. Like ToString
,
but smaller and faster. Read moresource§fn write_to_parts<S>(&self, sink: &mut S) -> Result<(), Error>where
S: PartsWrite + ?Sized,
fn write_to_parts<S>(&self, sink: &mut S) -> Result<(), Error>where
S: PartsWrite + ?Sized,
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.source§impl<'a> ZeroMapKV<'a> for Attribute
impl<'a> ZeroMapKV<'a> for Attribute
impl Copy for Attribute
impl Eq for Attribute
impl StructuralPartialEq for Attribute
Auto Trait Implementations§
impl Freeze for Attribute
impl RefUnwindSafe for Attribute
impl Send for Attribute
impl Sync for Attribute
impl Unpin for Attribute
impl UnwindSafe for Attribute
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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