Struct Highlighter 

pub struct Highlighter { /* private fields */ }

One language’s parser + highlight query. Reparses on demand; the incremental edit-diff feed (0001 pillar 4) lands when the core reports edits — prototype correctness first, per-frame cost is invisible at demo file sizes.

Implementations

impl Highlighter

pub fn invalidate(&mut self)

Apply the transaction’s edits to the kept tree (0022 §1): cheap pointer walk at commit time; the reparse stays lazy. Drop the kept tree (0023: a mutation path that can’t produce exact edit coordinates invalidates rather than lying).

pub fn apply_edits(&mut self, edits: &[InputEdit], revision: u64)

pub fn for_path(path: &Path) -> Option<Self>

pub fn highlight( &mut self, rope: &Rope, revision: u64, first_byte: usize, last_byte: usize, ) -> Vec<Span>

Highlight spans intersecting [first_byte, last_byte) of the rope. Reparses only when the text changed. revision is the document’s edit counter (0020 §5: the len+first+last key under-invalidated same-length middle edits deterministically).