59 lines
2 KiB
JavaScript
59 lines
2 KiB
JavaScript
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/** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */
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import * as tslib_1 from "tslib";
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import { Subscriber } from '../Subscriber';
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export function refCount() {
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return function refCountOperatorFunction(source) {
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return source.lift(new RefCountOperator(source));
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};
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}
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var RefCountOperator = /*@__PURE__*/ (function () {
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function RefCountOperator(connectable) {
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this.connectable = connectable;
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}
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RefCountOperator.prototype.call = function (subscriber, source) {
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var connectable = this.connectable;
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connectable._refCount++;
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var refCounter = new RefCountSubscriber(subscriber, connectable);
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var subscription = source.subscribe(refCounter);
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if (!refCounter.closed) {
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refCounter.connection = connectable.connect();
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}
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return subscription;
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};
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return RefCountOperator;
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}());
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var RefCountSubscriber = /*@__PURE__*/ (function (_super) {
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tslib_1.__extends(RefCountSubscriber, _super);
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function RefCountSubscriber(destination, connectable) {
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var _this = _super.call(this, destination) || this;
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_this.connectable = connectable;
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return _this;
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}
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RefCountSubscriber.prototype._unsubscribe = function () {
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var connectable = this.connectable;
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if (!connectable) {
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this.connection = null;
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return;
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}
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this.connectable = null;
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var refCount = connectable._refCount;
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if (refCount <= 0) {
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this.connection = null;
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return;
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}
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connectable._refCount = refCount - 1;
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if (refCount > 1) {
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this.connection = null;
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return;
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}
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var connection = this.connection;
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var sharedConnection = connectable._connection;
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this.connection = null;
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if (sharedConnection && (!connection || sharedConnection === connection)) {
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sharedConnection.unsubscribe();
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}
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};
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return RefCountSubscriber;
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}(Subscriber));
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//# sourceMappingURL=refCount.js.map
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