Struct LineBuffer 

pub struct LineBuffer {
    pub scopes: Vec<ScopeSpan>,
    pub styles: Vec<StyleSpan>,
    /* private fields */
}

Scratch space for highlighting one line without reallocating per call.

A buffer holds the latest tokenization and styling results so callers can reuse allocations while scanning many lines or repeatedly re-highlighting a changing line.

Fields

scopes: Vec<ScopeSpan>

Current scope spans.

styles: Vec<StyleSpan>

Current style spans.

Implementations

impl LineBuffer

pub fn clear(&mut self)

Clears all buffered spans while retaining allocations.

Cached scope styles are intentionally retained: they are keyed by (theme, grammar, scope_count) and stays valid across line resets.

pub fn tokenize<'a>( &'a mut self, grammar: &Grammar, state: &mut LineState, line: &str, ) -> &'a [ScopeSpan]

Tokenizes one line into this reusable buffer.

pub fn style<'a>( &'a mut self, grammar: &Grammar, theme: &Theme, line: &str, ) -> &'a [StyleSpan]

Applies a theme to this buffer’s current scope spans.

pub fn highlight<'a>( &'a mut self, grammar: &Grammar, theme: &Theme, state: &mut LineState, line: &str, ) -> (&'a [ScopeSpan], &'a [StyleSpan])

Tokenizes and styles one line into this reusable buffer.

Trait Implementations

impl Debug for LineBuffer

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

Formats the value using the given formatter.

impl Default for LineBuffer

fn default() -> LineBuffer

Returns the “default value” for a type.