Enum RunOrder 

pub enum RunOrder {
    AlreadyVisual,
    Logical(TextDirection),
}

How break_into_lines should treat the order of the runs it is given.

The two layout paths differ here and getting it wrong reverses text twice. The single-line path runs the bidi algorithm itself and shapes in display order, so its runs must be left alone; the block path hands over logical-order runs tagged with embedding levels and needs each line reordered once the breaks are known.

Variants

AlreadyVisual

Runs already arrive in visual order — do not reorder them.

Logical(TextDirection)

Runs are in logical order; reorder each line per UAX #9 rule L2, and resolve Start/End alignment against this base direction.

Trait Implementations

impl Clone for RunOrder

fn clone(&self) -> RunOrder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RunOrder

impl Debug for RunOrder

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

Formats the value using the given formatter.

impl Eq for RunOrder

impl PartialEq for RunOrder

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RunOrder