Enum icu::pattern::DoublePlaceholderKey

pub enum DoublePlaceholderKey {
    Place0,
    Place1,
}

A two-value enum for the DoublePlaceholder pattern backend.

Examples

use core::cmp::Ordering;
use core::str::FromStr;
use icu_pattern::DoublePlaceholderKey;
use icu_pattern::DoublePlaceholderPattern;
use icu_pattern::PatternItem;

// Parse the string syntax
let pattern = DoublePlaceholderPattern::try_from_str(
    "Hello, {0} and {1}!",
    Default::default(),
)
.unwrap();

assert_eq!(
    pattern.iter().cmp(
        [
            PatternItem::Literal("Hello, "),
            PatternItem::Placeholder(DoublePlaceholderKey::Place0),
            PatternItem::Literal(" and "),
            PatternItem::Placeholder(DoublePlaceholderKey::Place1),
            PatternItem::Literal("!")
        ]
        .into_iter()
    ),
    Ordering::Equal
);

Variants

Place0

The placeholder {0}.

Place1

The placeholder {1}.

Trait Implementations

impl Clone for DoublePlaceholderKey

fn clone(&self) -> DoublePlaceholderKey

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DoublePlaceholderKey

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DoublePlaceholderKey

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl FromStr for DoublePlaceholderKey

type Err = PatternError

The associated error which can be returned from parsing.

fn from_str( s: &str, ) -> Result<DoublePlaceholderKey, <DoublePlaceholderKey as FromStr>::Err>

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

impl Ord for DoublePlaceholderKey

fn cmp(&self, other: &DoublePlaceholderKey) -> 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 DoublePlaceholderKey

fn eq(&self, other: &DoublePlaceholderKey) -> 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 DoublePlaceholderKey

fn partial_cmp(&self, other: &DoublePlaceholderKey) -> 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<DoublePlaceholderKey> for [W; 2]

where W: Writeable,

type Error = Infallible

type W<'a> = WriteableAsTryWriteableInfallible<&'a W> where W: 'a

const LITERAL_PART: Part = crate::PATTERN_LITERAL_PART

fn value_for( &self, key: DoublePlaceholderKey, ) -> (<[W; 2] as PlaceholderValueProvider<DoublePlaceholderKey>>::W<'_>, Part)

Returns the TryWriteable to substitute for the given placeholder and the Part representing it.

impl<W0, W1> PlaceholderValueProvider<DoublePlaceholderKey> for (W0, W1)

where W0: Writeable, W1: Writeable,

type Error = Infallible

type W<'a> = WriteableAsTryWriteableInfallible<Either<&'a W0, &'a W1>> where W0: 'a, W1: 'a

const LITERAL_PART: Part = crate::PATTERN_LITERAL_PART

fn value_for( &self, key: DoublePlaceholderKey, ) -> (<(W0, W1) as PlaceholderValueProvider<DoublePlaceholderKey>>::W<'_>, Part)

Returns the TryWriteable to substitute for the given placeholder and the Part representing it.

impl Serialize for DoublePlaceholderKey

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 DoublePlaceholderKey

impl Eq for DoublePlaceholderKey

impl StructuralPartialEq for DoublePlaceholderKey