Struct icu::normalizer::properties::CanonicalDecomposition

pub struct CanonicalDecomposition { /* private fields */ }

The raw (non-recursive) canonical decomposition operation.

Callers should generally use DecomposingNormalizer instead of this API. However, this API is provided for callers such as HarfBuzz that specifically want access to non-recursive canonical decomposition e.g. for use in a glyph-availability-guided custom normalizer.

Implementations

impl CanonicalDecomposition

pub fn decompose(&self, c: char) -> Decomposed

Performs non-recursive canonical decomposition (including for Hangul).

    use icu_normalizer::properties::Decomposed;
    let decomp = icu_normalizer::properties::CanonicalDecomposition::try_new_unstable(&icu_testdata::unstable()).unwrap();

    assert_eq!(decomp.decompose('e'), Decomposed::Default);
    assert_eq!(
        decomp.decompose('ệ'),
        Decomposed::Expansion('ẹ', '\u{0302}')
    );
    assert_eq!(decomp.decompose('각'), Decomposed::Expansion('가', 'ᆨ'));
    assert_eq!(decomp.decompose('\u{212B}'), Decomposed::Singleton('Å')); // ANGSTROM SIGN
    assert_eq!(decomp.decompose('\u{2126}'), Decomposed::Singleton('Ω')); // OHM SIGN
    assert_eq!(decomp.decompose('\u{1F71}'), Decomposed::Singleton('ά')); // oxia

pub fn try_new_unstable<D>( data_provider: &D ) -> Result<CanonicalDecomposition, NormalizerError>where D: DataProvider<CanonicalDecompositionDataV1Marker> + DataProvider<CanonicalDecompositionTablesV1Marker> + DataProvider<NonRecursiveDecompositionSupplementV1Marker> + ?Sized,

Construct from data provider.

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⚠️ The bounds on this function may change over time, including in SemVer minor releases.

pub fn try_new_with_any_provider( provider: &impl AnyProvider ) -> Result<CanonicalDecomposition, NormalizerError>

Creates a new instance using an AnyProvider.

For details on the behavior of this function, see: Self::try_new_unstable

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pub fn try_new_with_buffer_provider( provider: &impl BufferProvider ) -> Result<CanonicalDecomposition, NormalizerError>

✨ Enabled with the "serde" feature.

Creates a new instance using a BufferProvider.

For details on the behavior of this function, see: Self::try_new_unstable

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Trait Implementations

impl Debug for CanonicalDecomposition

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

Formats the value using the given formatter.