Struct Span 

pub struct Span {
    pub start_byte: usize,
    pub end_byte: usize,
    pub style: u32,
}

One styled byte range on a buffer row.

Style spans are opaque-id tuples. The buffer does not own colors. The host (engine layer or terminal frontend) keeps the table mapping style: u32 to a renderable type.

Byte ranges are half-open: [start_byte, end_byte). They line up with the row’s String so callers can slice without re-deriving indices.

The host installs spans via the engine’s Editor::install_syntax_spans (or equivalent) after each edit. Spans are cleared for affected rows on every crate::Buffer::apply_edit call and must be re-installed by the host’s syntax pipeline.

Fields

start_byte: usize

end_byte: usize

style: u32

Opaque style id resolved by the host’s render layer.

Implementations

impl Span

pub const fn new(start_byte: usize, end_byte: usize, style: u32) -> Self

pub const fn len(self) -> usize

Width of the span in bytes; useful for render-cache fingerprints.

pub const fn is_empty(self) -> bool

Trait Implementations

impl Clone for Span

fn clone(&self) -> Span

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Span

impl Debug for Span

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

Formats the value using the given formatter.

impl Eq for Span

impl PartialEq for Span

fn eq(&self, other: &Span) -> 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 Span