74 lines
2.4 KiB
JavaScript
74 lines
2.4 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Effect = void 0;
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exports.effect = effect;
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const system_js_1 = require("./system.js");
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function effect(fn) {
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const e = new Effect(fn);
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e.run();
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return e;
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}
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class Effect {
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constructor(fn) {
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this.fn = fn;
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this.nextNotify = undefined;
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// Dependency
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this.subs = undefined;
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this.subsTail = undefined;
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this.linkedTrackId = -1;
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// Subscriber
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this.deps = undefined;
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this.depsTail = undefined;
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this.trackId = 0;
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this.dirtyLevel = 3 /* DirtyLevels.Dirty */;
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this.canPropagate = false;
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const subVersion = system_js_1.System.activeTrackId;
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if (subVersion !== 0 && this.linkedTrackId !== subVersion) {
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this.linkedTrackId = subVersion;
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system_js_1.Dependency.linkSubscriber(this, system_js_1.System.activeSub);
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return;
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}
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const activeTrackId = system_js_1.System.activeEffectScopeTrackId;
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if (activeTrackId !== 0 && this.linkedTrackId !== activeTrackId) {
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this.linkedTrackId = activeTrackId;
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system_js_1.Dependency.linkSubscriber(this, system_js_1.System.activeEffectScope);
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}
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}
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notify() {
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const dirtyLevel = this.dirtyLevel;
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if (dirtyLevel === 1 /* DirtyLevels.SideEffectsOnly */) {
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this.dirtyLevel = 0 /* DirtyLevels.None */;
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system_js_1.Subscriber.runInnerEffects(this.deps);
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}
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else {
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if (dirtyLevel === 2 /* DirtyLevels.MaybeDirty */) {
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system_js_1.Subscriber.resolveMaybeDirty(this);
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}
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if (this.dirtyLevel === 3 /* DirtyLevels.Dirty */) {
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this.run();
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}
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else {
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system_js_1.Subscriber.runInnerEffects(this.deps);
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}
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}
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}
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run() {
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const prevSub = system_js_1.Subscriber.startTrackDependencies(this);
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try {
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this.fn();
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}
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finally {
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system_js_1.Subscriber.endTrackDependencies(this, prevSub);
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}
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}
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stop() {
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if (this.deps !== undefined) {
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system_js_1.Subscriber.clearTrack(this.deps);
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this.deps = undefined;
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this.depsTail = undefined;
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}
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this.dirtyLevel = 3 /* DirtyLevels.Dirty */;
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}
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}
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exports.Effect = Effect;
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