pub struct CachedIndex {
cached: Option<(BuiltFrom, SpatialIndex)>,
}Expand description
The SpatialIndex cached across frames. Self::get rebuilds it whenever
a fold produced a new document value (a fresh DocStamp) or the current
level changed, so no mutation site has to remember to invalidate anything.
Fields§
§cached: Option<(BuiltFrom, SpatialIndex)>Implementations§
Source§impl CachedIndex
impl CachedIndex
Sourcepub fn get<'s>(
&'s mut self,
doc_index: &mut DocIndex,
doc: &Document,
path: &BlockPath,
presentation: &mut Presentation,
) -> &'s SpatialIndex
pub fn get<'s>( &'s mut self, doc_index: &mut DocIndex, doc: &Document, path: &BlockPath, presentation: &mut Presentation, ) -> &'s SpatialIndex
The index for path, rebuilt from doc unless the cached one was
built from the same level and the same document value. Building the whole
50×50 grid’s index is ~2ms, so an occasional extra rebuild is cheap.
Takes the owned DocIndex rather than a view because it needs the
view only while building — the returned borrow is of the cache alone,
so the caller can take its own view for the drawing that follows.
The sink is local: indexing authors nothing.
Trait Implementations§
Source§impl Default for CachedIndex
impl Default for CachedIndex
Source§fn default() -> CachedIndex
fn default() -> CachedIndex
Returns the “default value” for a type. Read more
Auto Trait Implementations§
impl Freeze for CachedIndex
impl RefUnwindSafe for CachedIndex
impl Send for CachedIndex
impl Sync for CachedIndex
impl Unpin for CachedIndex
impl UnsafeUnpin for CachedIndex
impl UnwindSafe for CachedIndex
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