Struct UnicodeDataDecomposition 

pub struct UnicodeDataDecomposition {
    pub tag: Option<UnicodeDataDecompositionTag>,
    pub len: usize,
    pub mapping: [Codepoint; 18],
}

Represents a decomposition mapping of a single row in the UnicodeData.txt file.

Fields

tag: Option<UnicodeDataDecompositionTag>

The formatting tag associated with this mapping, if present.

len: usize

The number of codepoints in this mapping.

mapping: [Codepoint; 18]

The codepoints in the mapping. Entries beyond len in the mapping are always U+0000. If no mapping was present, then this always contains a single codepoint corresponding to this row’s character.

Implementations

impl UnicodeDataDecomposition

pub fn new( tag: Option<UnicodeDataDecompositionTag>, mapping: &[Codepoint], ) -> Result<UnicodeDataDecomposition, Error>

Create a new decomposition mapping with the given tag and codepoints.

If there are too many codepoints, then an error is returned.

pub fn push(&mut self, cp: Codepoint) -> Result<(), Error>

Add a new codepoint to this decomposition’s mapping.

If the mapping is already full, then this returns an error.

pub fn mapping(&self) -> &[Codepoint]

Return the mapping as a slice of codepoints. The slice returned has length equivalent to the number of codepoints in this mapping.

pub fn is_canonical(&self) -> bool

Returns true if and only if this decomposition mapping is canonical.

Trait Implementations

impl Clone for UnicodeDataDecomposition

fn clone(&self) -> UnicodeDataDecomposition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UnicodeDataDecomposition

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

Formats the value using the given formatter.

impl Default for UnicodeDataDecomposition

fn default() -> UnicodeDataDecomposition

Returns the “default value” for a type.

impl Display for UnicodeDataDecomposition

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

Formats the value using the given formatter.

impl Eq for UnicodeDataDecomposition

impl FromStr for UnicodeDataDecomposition

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<UnicodeDataDecomposition, Error>

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

impl PartialEq for UnicodeDataDecomposition

fn eq(&self, other: &UnicodeDataDecomposition) -> 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 StructuralPartialEq for UnicodeDataDecomposition