1 | /** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */
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2 | import * as tslib_1 from "tslib";
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3 | import { Subscriber } from '../Subscriber';
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4 | export function refCount() {
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5 | return function refCountOperatorFunction(source) {
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6 | return source.lift(new RefCountOperator(source));
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7 | };
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8 | }
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9 | var RefCountOperator = /*@__PURE__*/ (function () {
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10 | function RefCountOperator(connectable) {
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11 | this.connectable = connectable;
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12 | }
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13 | RefCountOperator.prototype.call = function (subscriber, source) {
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14 | var connectable = this.connectable;
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15 | connectable._refCount++;
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16 | var refCounter = new RefCountSubscriber(subscriber, connectable);
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17 | var subscription = source.subscribe(refCounter);
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18 | if (!refCounter.closed) {
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19 | refCounter.connection = connectable.connect();
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20 | }
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21 | return subscription;
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22 | };
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23 | return RefCountOperator;
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24 | }());
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25 | var RefCountSubscriber = /*@__PURE__*/ (function (_super) {
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26 | tslib_1.__extends(RefCountSubscriber, _super);
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27 | function RefCountSubscriber(destination, connectable) {
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28 | var _this = _super.call(this, destination) || this;
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29 | _this.connectable = connectable;
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30 | return _this;
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31 | }
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32 | RefCountSubscriber.prototype._unsubscribe = function () {
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33 | var connectable = this.connectable;
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34 | if (!connectable) {
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35 | this.connection = null;
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36 | return;
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37 | }
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38 | this.connectable = null;
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39 | var refCount = connectable._refCount;
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40 | if (refCount <= 0) {
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41 | this.connection = null;
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42 | return;
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43 | }
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44 | connectable._refCount = refCount - 1;
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45 | if (refCount > 1) {
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46 | this.connection = null;
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47 | return;
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48 | }
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49 | var connection = this.connection;
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50 | var sharedConnection = connectable._connection;
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51 | this.connection = null;
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52 | if (sharedConnection && (!connection || sharedConnection === connection)) {
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53 | sharedConnection.unsubscribe();
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54 | }
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55 | };
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56 | return RefCountSubscriber;
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57 | }(Subscriber));
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58 | //# sourceMappingURL=refCount.js.map
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