Enum GraphemeState 

enum GraphemeState {
    Unknown,
    NotBreak,
    Break,
    InCbConsonant,
    Regional,
    Emoji {
        seen_zwj: bool,
    },
}

maybe unify with PairResult? An enum describing information about a potential boundary.

Variants

Unknown

No information is known.

NotBreak

It is known to not be a boundary.

Break

It is known to be a boundary.

InCbConsonant

The codepoint after it has Indic_Conjunct_Break=Consonant, so there is a break before so a boundary if it is preceded by another InCB=Consonant follwoed by a sequence consisting of one or more InCB=Linker and zero or more InCB = Extend (in any order).

Regional

The codepoint after is a Regional Indicator Symbol, so a boundary iff it is preceded by an even number of RIS codepoints. (GB12, GB13)

Emoji

The codepoint after is Extended_Pictographic, so whether it’s a boundary depends on pre-context according to GB11.

Fields

seen_zwj: bool

Whether the ZWJ char has been seen already an only a “\p{Extended_Pictographic} Extend*” part of GB11 has to be checked

Trait Implementations

impl Clone for GraphemeState

fn clone(&self) -> GraphemeState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphemeState

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

Formats the value using the given formatter.

impl Eq for GraphemeState

impl PartialEq for GraphemeState

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for GraphemeState