Struct LayoutCache 

pub struct LayoutCache { /* private fields */ }

Viewport input cache keyed by buffer version + highlighter revision.

Implementations

impl LayoutCache

pub fn new() -> Self

Creates an empty cache.

pub fn clear(&mut self)

Drops all cached rows and hit/miss counters.

pub fn stats(&self) -> (u64, u64)

Returns (hits, misses) since creation or the last Self::clear.

pub fn len(&self) -> usize

Number of rows currently cached.

pub fn is_empty(&self) -> bool

Whether the cache holds no rows.

pub fn cached_input( &mut self, buffer: &EditorBuffer, highlighter: Option<&dyn SyntaxHighlighter>, highlighter_rev: u64, cursor_row: usize, row: usize, line_text: &str, ) -> &CachedInput

Returns the cached input for row, computing and storing it on miss.

cursor_row is hoisted by the caller so buffer.cursor_point() (two O(log n) walks) runs once per frame, not once per row. line_text must be the raw line without trailing \r\n, matching prepaint.

Trait Implementations

impl Debug for LayoutCache

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

Formats the value using the given formatter.

impl Default for LayoutCache

fn default() -> LayoutCache

Returns the “default value” for a type.