Struct WasmDecorationState 

pub struct WasmDecorationState {
    pub cache: PerBufferCache<WasmGutterDecorationCache>,
    pub registry: Option<GutterDecorationSourceRegistryHandle>,
    pub generation: Arc<AtomicU64>,
    /* private fields */
}

The Editor’s cohesive WASM-decoration wiring (PL8.E). Bundled into one field so the boot struct literal grows by a single line and the state stays together. Every field defaults (empty cache / no registry / generation 0), so Editor::default() test fixtures get an inert decoration seam.

Fields

cache: PerBufferCache<WasmGutterDecorationCache>

Per-buffer cache the producer tasks write and the renderer reads. Cloned into the published RenderState so off-render-path writes are observed without republishing the snapshot.

registry: Option<GutterDecorationSourceRegistryHandle>

The registered async decoration producers — a clone of the boot GutterDecorationSourceRegistryHandle service the loader RCU-registers into. None in Editor::default(); the refresh then no-ops.

generation: Arc<AtomicU64>

Off-keystroke paint gate. A producer task bumps this on every cache write; Editor::compute_paint_revision folds it in so a decoration arrival with no keystroke in flight repaints the gutter.

Implementations

impl WasmDecorationState

pub fn with_registry(registry: GutterDecorationSourceRegistryHandle) -> Self

Construct the decoration state wired to the boot producer registry — the boot path. Keeps the single-flight / epoch bookkeeping private (they start zeroed); Editor::default() uses the Default impl (no registry).

pub fn request_refresh(&self)

SG.1 / DR.2: force the next tick to re-ask every producer.

:redraw / <C-l> is the user’s escape hatch for a display that has gone wrong, and it already re-derives every visible pane from a clean slate. A cached decoration set is part of that display: without this a stale sign — the one thing <C-l> exists to fix — survives the redraw, because the pump’s two ordinary triggers (registry, document version) are both unchanged by a redraw.

A no-op when no counter is wired, like every other degradation here.

pub fn with_decoration_epoch(self, epoch: DecorationEpochHandle) -> Self

OA.30: attach the guest-driven refresh counter. Separate from with_registry because a harness may wire one without the other, and neither is a precondition for the other working.

Trait Implementations

impl Debug for WasmDecorationState

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

Formats the value using the given formatter.

impl Default for WasmDecorationState

fn default() -> WasmDecorationState

Returns the “default value” for a type.