101 lines
3.3 KiB
JavaScript
101 lines
3.3 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.trigger = exports.cleanupDepEffect = exports.track = exports.depsMap = exports.resetEffect = exports.pauseEffect = exports.resetTracking = exports.pauseTracking = exports.activeTrackers = void 0;
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exports.activeTrackers = [];
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let pauseEffectStack = 0;
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const pausedTrackers = [];
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const pausedEffects = [];
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function pauseTracking() {
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pausedTrackers.push(exports.activeTrackers);
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exports.activeTrackers = [];
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}
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exports.pauseTracking = pauseTracking;
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function resetTracking() {
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exports.activeTrackers = pausedTrackers.pop();
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}
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exports.resetTracking = resetTracking;
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function pauseEffect() {
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pauseEffectStack++;
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}
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exports.pauseEffect = pauseEffect;
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function resetEffect() {
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pauseEffectStack--;
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while (!pauseEffectStack && pausedEffects.length) {
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pausedEffects.shift().effect();
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}
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}
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exports.resetEffect = resetEffect;
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exports.depsMap = new WeakMap();
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const trackerRegistry = new FinalizationRegistry(trackToken => {
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const deps = exports.depsMap.get(trackToken);
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if (deps) {
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for (const dep of deps) {
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dep.delete(trackToken);
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}
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deps.length = 0;
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}
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});
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function track(dep) {
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if (exports.activeTrackers.length) {
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const tracker = exports.activeTrackers[exports.activeTrackers.length - 1];
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if (!tracker.trackToken) {
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if (tracker.effect) {
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tracker.trackToken = tracker;
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}
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else {
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tracker.trackToken = new WeakRef(tracker);
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trackerRegistry.register(tracker, tracker.trackToken, tracker);
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}
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exports.depsMap.set(tracker.trackToken, []);
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}
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const trackToken = tracker.trackToken;
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const deps = exports.depsMap.get(trackToken);
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if (deps) {
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if (dep.get(tracker) !== tracker.trackId) {
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dep.set(tracker, tracker.trackId);
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const oldDep = deps[tracker.depsLength];
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if (oldDep !== dep) {
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if (oldDep) {
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cleanupDepEffect(oldDep, tracker);
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}
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deps[tracker.depsLength++] = dep;
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}
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else {
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tracker.depsLength++;
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}
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}
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}
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}
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}
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exports.track = track;
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function cleanupDepEffect(dep, tracker) {
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const trackId = dep.get(tracker);
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if (trackId !== undefined && tracker.trackId !== trackId) {
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dep.delete(tracker);
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}
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}
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exports.cleanupDepEffect = cleanupDepEffect;
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function trigger(dep, dirtyLevel) {
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pauseEffect();
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for (const trackToken of dep.keys()) {
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const tracker = trackToken.deref();
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if (!tracker) {
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continue;
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}
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if (tracker.dirtyLevel < dirtyLevel &&
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(!tracker.runnings || dirtyLevel !== 2 /* DirtyLevels.ComputedValueDirty */)) {
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const lastDirtyLevel = tracker.dirtyLevel;
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tracker.dirtyLevel = dirtyLevel;
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if (lastDirtyLevel === 0 /* DirtyLevels.NotDirty */ &&
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(!tracker.queryings || dirtyLevel !== 2 /* DirtyLevels.ComputedValueDirty */)) {
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tracker.spread();
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if (tracker.effect) {
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pausedEffects.push(tracker);
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}
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}
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}
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}
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resetEffect();
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}
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exports.trigger = trigger;
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