Enum icu::pattern::SinglePlaceholderKey

pub enum SinglePlaceholderKey {
    Singleton,
}

A singleton enum for the SinglePlaceholder pattern backend.

Examples

use core::cmp::Ordering;
use core::str::FromStr;
use icu_pattern::PatternItem;
use icu_pattern::SinglePlaceholder;
use icu_pattern::SinglePlaceholderKey;
use icu_pattern::SinglePlaceholderPattern;

// Parse the string syntax and check the resulting data store:
let pattern = SinglePlaceholderPattern::try_from_str(
    "Hello, {0}!",
    Default::default(),
)
.unwrap();

assert_eq!(
    pattern.iter().cmp(
        [
            PatternItem::Literal("Hello, "),
            PatternItem::Placeholder(SinglePlaceholderKey::Singleton),
            PatternItem::Literal("!")
        ]
        .into_iter()
    ),
    Ordering::Equal
);

Variants

Singleton

Trait Implementations

impl Clone for SinglePlaceholderKey

fn clone(&self) -> SinglePlaceholderKey

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SinglePlaceholderKey

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SinglePlaceholderKey

fn deserialize<__D>( __deserializer: __D, ) -> Result<SinglePlaceholderKey, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl FromStr for SinglePlaceholderKey

type Err = Infallible

The associated error which can be returned from parsing.

fn from_str( _: &str, ) -> Result<SinglePlaceholderKey, <SinglePlaceholderKey as FromStr>::Err>

Parses a string s to return a value of this type.

impl Ord for SinglePlaceholderKey

fn cmp(&self, other: &SinglePlaceholderKey) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for SinglePlaceholderKey

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl PartialOrd for SinglePlaceholderKey

fn partial_cmp(&self, other: &SinglePlaceholderKey) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<W> PlaceholderValueProvider<SinglePlaceholderKey> for [W; 1]

where W: Writeable,

type Error = Infallible

type W<'a> = WriteableAsTryWriteableInfallible<&'a W> where [W; 1]: 'a

The type of TryWriteable returned by Self::value_for.

type L<'a, 'l> = &'l str where [W; 1]: 'a

The type of Writeable returned by Self::map_literal.

fn value_for( &self, _key: SinglePlaceholderKey, ) -> <[W; 1] as PlaceholderValueProvider<SinglePlaceholderKey>>::W<'_>

Returns the TryWriteable to substitute for the given placeholder.

fn map_literal<'a, 'l>( &'a self, literal: &'l str, ) -> <[W; 1] as PlaceholderValueProvider<SinglePlaceholderKey>>::L<'a, 'l>

Maps a literal string to a Writeable that could contain parts.

impl<W> PlaceholderValueProvider<SinglePlaceholderKey> for (W,)

where W: Writeable,

type Error = Infallible

type W<'a> = WriteableAsTryWriteableInfallible<&'a W> where (W,): 'a

The type of TryWriteable returned by Self::value_for.

type L<'a, 'l> = &'l str where (W,): 'a

The type of Writeable returned by Self::map_literal.

fn value_for( &self, _key: SinglePlaceholderKey, ) -> <(W,) as PlaceholderValueProvider<SinglePlaceholderKey>>::W<'_>

Returns the TryWriteable to substitute for the given placeholder.

fn map_literal<'a, 'l>( &'a self, literal: &'l str, ) -> <(W,) as PlaceholderValueProvider<SinglePlaceholderKey>>::L<'a, 'l>

Maps a literal string to a Writeable that could contain parts.

impl Serialize for SinglePlaceholderKey

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for SinglePlaceholderKey

impl Eq for SinglePlaceholderKey

impl StructuralPartialEq for SinglePlaceholderKey