[6a3a178] | 1 | /** PURE_IMPORTS_START tslib,_innerSubscribe PURE_IMPORTS_END */
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| 2 | import * as tslib_1 from "tslib";
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| 3 | import { SimpleOuterSubscriber, SimpleInnerSubscriber, innerSubscribe } from '../innerSubscribe';
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| 4 | export function mergeScan(accumulator, seed, concurrent) {
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| 5 | if (concurrent === void 0) {
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| 6 | concurrent = Number.POSITIVE_INFINITY;
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| 7 | }
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| 8 | return function (source) { return source.lift(new MergeScanOperator(accumulator, seed, concurrent)); };
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| 9 | }
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| 10 | var MergeScanOperator = /*@__PURE__*/ (function () {
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| 11 | function MergeScanOperator(accumulator, seed, concurrent) {
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| 12 | this.accumulator = accumulator;
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| 13 | this.seed = seed;
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| 14 | this.concurrent = concurrent;
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| 15 | }
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| 16 | MergeScanOperator.prototype.call = function (subscriber, source) {
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| 17 | return source.subscribe(new MergeScanSubscriber(subscriber, this.accumulator, this.seed, this.concurrent));
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| 18 | };
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| 19 | return MergeScanOperator;
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| 20 | }());
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| 21 | export { MergeScanOperator };
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| 22 | var MergeScanSubscriber = /*@__PURE__*/ (function (_super) {
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| 23 | tslib_1.__extends(MergeScanSubscriber, _super);
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| 24 | function MergeScanSubscriber(destination, accumulator, acc, concurrent) {
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| 25 | var _this = _super.call(this, destination) || this;
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| 26 | _this.accumulator = accumulator;
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| 27 | _this.acc = acc;
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| 28 | _this.concurrent = concurrent;
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| 29 | _this.hasValue = false;
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| 30 | _this.hasCompleted = false;
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| 31 | _this.buffer = [];
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| 32 | _this.active = 0;
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| 33 | _this.index = 0;
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| 34 | return _this;
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| 35 | }
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| 36 | MergeScanSubscriber.prototype._next = function (value) {
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| 37 | if (this.active < this.concurrent) {
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| 38 | var index = this.index++;
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| 39 | var destination = this.destination;
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| 40 | var ish = void 0;
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| 41 | try {
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| 42 | var accumulator = this.accumulator;
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| 43 | ish = accumulator(this.acc, value, index);
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| 44 | }
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| 45 | catch (e) {
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| 46 | return destination.error(e);
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| 47 | }
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| 48 | this.active++;
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| 49 | this._innerSub(ish);
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| 50 | }
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| 51 | else {
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| 52 | this.buffer.push(value);
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| 53 | }
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| 54 | };
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| 55 | MergeScanSubscriber.prototype._innerSub = function (ish) {
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| 56 | var innerSubscriber = new SimpleInnerSubscriber(this);
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| 57 | var destination = this.destination;
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| 58 | destination.add(innerSubscriber);
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| 59 | var innerSubscription = innerSubscribe(ish, innerSubscriber);
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| 60 | if (innerSubscription !== innerSubscriber) {
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| 61 | destination.add(innerSubscription);
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| 62 | }
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| 63 | };
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| 64 | MergeScanSubscriber.prototype._complete = function () {
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| 65 | this.hasCompleted = true;
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| 66 | if (this.active === 0 && this.buffer.length === 0) {
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| 67 | if (this.hasValue === false) {
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| 68 | this.destination.next(this.acc);
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| 69 | }
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| 70 | this.destination.complete();
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| 71 | }
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| 72 | this.unsubscribe();
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| 73 | };
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| 74 | MergeScanSubscriber.prototype.notifyNext = function (innerValue) {
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| 75 | var destination = this.destination;
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| 76 | this.acc = innerValue;
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| 77 | this.hasValue = true;
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| 78 | destination.next(innerValue);
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| 79 | };
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| 80 | MergeScanSubscriber.prototype.notifyComplete = function () {
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| 81 | var buffer = this.buffer;
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| 82 | this.active--;
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| 83 | if (buffer.length > 0) {
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| 84 | this._next(buffer.shift());
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| 85 | }
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| 86 | else if (this.active === 0 && this.hasCompleted) {
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| 87 | if (this.hasValue === false) {
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| 88 | this.destination.next(this.acc);
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| 89 | }
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| 90 | this.destination.complete();
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| 91 | }
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| 92 | };
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| 93 | return MergeScanSubscriber;
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| 94 | }(SimpleOuterSubscriber));
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| 95 | export { MergeScanSubscriber };
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| 96 | //# sourceMappingURL=mergeScan.js.map
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