Struct icu::properties::BidiClass

pub struct BidiClass(pub u8);

Enumerated property Bidi_Class

These are the categories required by the Unicode Bidirectional Algorithm. For the property values, see Bidirectional Class Values. For more information, see Unicode Standard Annex #9.

Tuple Fields

0: u8

Implementations

impl BidiClass

pub const LeftToRight: BidiClass = BidiClass(0)

(L) any strong left-to-right character

pub const RightToLeft: BidiClass = BidiClass(1)

(R) any strong right-to-left (non-Arabic-type) character

pub const EuropeanNumber: BidiClass = BidiClass(2)

(EN) any ASCII digit or Eastern Arabic-Indic digit

pub const EuropeanSeparator: BidiClass = BidiClass(3)

(ES) plus and minus signs

pub const EuropeanTerminator: BidiClass = BidiClass(4)

(ET) a terminator in a numeric format context, includes currency signs

pub const ArabicNumber: BidiClass = BidiClass(5)

(AN) any Arabic-Indic digit

pub const CommonSeparator: BidiClass = BidiClass(6)

(CS) commas, colons, and slashes

pub const ParagraphSeparator: BidiClass = BidiClass(7)

(B) various newline characters

pub const SegmentSeparator: BidiClass = BidiClass(8)

(S) various segment-related control codes

pub const WhiteSpace: BidiClass = BidiClass(9)

(WS) spaces

pub const OtherNeutral: BidiClass = BidiClass(10)

(ON) most other symbols and punctuation marks

pub const LeftToRightEmbedding: BidiClass = BidiClass(11)

(LRE) U+202A: the LR embedding control

pub const LeftToRightOverride: BidiClass = BidiClass(12)

(LRO) U+202D: the LR override control

pub const ArabicLetter: BidiClass = BidiClass(13)

(AL) any strong right-to-left (Arabic-type) character

pub const RightToLeftEmbedding: BidiClass = BidiClass(14)

(RLE) U+202B: the RL embedding control

pub const RightToLeftOverride: BidiClass = BidiClass(15)

(RLO) U+202E: the RL override control

pub const PopDirectionalFormat: BidiClass = BidiClass(16)

(PDF) U+202C: terminates an embedding or override control

pub const NonspacingMark: BidiClass = BidiClass(17)

(NSM) any nonspacing mark

pub const BoundaryNeutral: BidiClass = BidiClass(18)

(BN) most format characters, control codes, or noncharacters

pub const FirstStrongIsolate: BidiClass = BidiClass(19)

(FSI) U+2068: the first strong isolate control

pub const LeftToRightIsolate: BidiClass = BidiClass(20)

(LRI) U+2066: the LR isolate control

pub const RightToLeftIsolate: BidiClass = BidiClass(21)

(RLI) U+2067: the RL isolate control

pub const PopDirectionalIsolate: BidiClass = BidiClass(22)

(PDI) U+2069: terminates an isolate control

impl BidiClass

pub fn get_name_to_enum_mapper( provider: &impl DataProvider<BidiClassNameToValueV1Marker> ) -> Result<PropertyValueNameToEnumMapper<BidiClass>, PropertiesError>

Return a PropertyValueNameToEnumMapper, capable of looking up values from strings for the Bidi_Class enumerated property

Example

use icu::properties::BidiClass;

let lookup = BidiClass::get_name_to_enum_mapper(&icu_testdata::unstable())
                 .expect("The data should be valid");
let lookup = lookup.as_borrowed();
// short name for value
assert_eq!(lookup.get_strict("AN"), Some(BidiClass::ArabicNumber));
assert_eq!(lookup.get_strict("NSM"), Some(BidiClass::NonspacingMark));
// long name for value
assert_eq!(lookup.get_strict("Arabic_Number"), Some(BidiClass::ArabicNumber));
assert_eq!(lookup.get_strict("Nonspacing_Mark"), Some(BidiClass::NonspacingMark));
// name has incorrect casing
assert_eq!(lookup.get_strict("arabicnumber"), None);
// loose matching of name
assert_eq!(lookup.get_loose("arabicnumber"), Some(BidiClass::ArabicNumber));
// fake property
assert_eq!(lookup.get_strict("Upside_Down_Vertical_Backwards_Mirrored"), None);

pub fn get_enum_to_short_name_mapper( provider: &impl DataProvider<BidiClassValueToShortNameV1Marker> ) -> Result<PropertyEnumToValueNameLinearMapper<BidiClass>, PropertiesError>

Return a PropertyEnumToValueNameLinearMapper, capable of looking up short names for values of the Bidi_Class enumerated property

Example

use icu::properties::BidiClass;

let lookup = BidiClass::get_enum_to_short_name_mapper(&icu_testdata::unstable())
                 .expect("The data should be valid");
let lookup = lookup.as_borrowed();
assert_eq!(lookup.get(BidiClass::ArabicNumber), Some("AN"));
assert_eq!(lookup.get(BidiClass::NonspacingMark), Some("NSM"));

pub fn get_enum_to_long_name_mapper( provider: &impl DataProvider<BidiClassValueToLongNameV1Marker> ) -> Result<PropertyEnumToValueNameLinearMapper<BidiClass>, PropertiesError>

Return a PropertyEnumToValueNameLinearMapper, capable of looking up long names for values of the Bidi_Class enumerated property

Example

use icu::properties::BidiClass;

let lookup = BidiClass::get_enum_to_long_name_mapper(&icu_testdata::unstable())
                 .expect("The data should be valid");
let lookup = lookup.as_borrowed();
assert_eq!(lookup.get(BidiClass::ArabicNumber), Some("Arabic_Number"));
assert_eq!(lookup.get(BidiClass::NonspacingMark), Some("Nonspacing_Mark"));

Trait Implementations

impl AsULE for BidiClass

type ULE = BidiClassULE

The ULE type corresponding to Self.

fn to_unaligned(self) -> <BidiClass as AsULE>::ULE

Converts from Self to Self::ULE.

fn from_unaligned(unaligned: <BidiClass as AsULE>::ULE) -> BidiClass

Converts from Self::ULE to Self.

impl Clone for BidiClass

fn clone(&self) -> BidiClass

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BidiClass

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BidiClass

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

Deserialize this value from the given Serde deserializer.

impl Ord for BidiClass

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<BidiClass> for BidiClass

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd<BidiClass> for BidiClass

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Serialize for BidiClass

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 TrieValue for BidiClass

type TryFromU32Error = TryFromIntError

Last-resort fallback value to return if we cannot read data from the trie.

fn try_from_u32( i: u32 ) -> Result<BidiClass, <BidiClass as TrieValue>::TryFromU32Error>

A parsing function that is primarily motivated by deserialization contexts. When the serialization type width is smaller than 32 bits, then it is expected that the call site will widen the value to a u32 first.

fn to_u32(self) -> u32

A method for converting back to a u32 that can roundtrip through Self::try_from_u32(). The default implementation of this trait method panics in debug mode and returns 0 in release mode.

impl<'a> ZeroMapKV<'a> for BidiClass

type Container = ZeroVec<'a, BidiClass>

The container that can be used with this type: [ZeroVec] or [VarZeroVec].

type Slice = ZeroSlice<BidiClass>

type GetType = BidiClassULE

The type produced by Container::get()

type OwnedType = BidiClass

The type produced by Container::replace() and Container::remove(), also used during deserialization. If Self is human readable serialized, deserializing to Self::OwnedType should produce the same value once passed through Self::owned_as_self()

impl Copy for BidiClass

impl Eq for BidiClass

impl StructuralEq for BidiClass

impl StructuralPartialEq for BidiClass