100 lines
3.7 KiB
JavaScript
100 lines
3.7 KiB
JavaScript
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/** PURE_IMPORTS_START tslib,_innerSubscribe PURE_IMPORTS_END */
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import * as tslib_1 from "tslib";
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import { SimpleOuterSubscriber, innerSubscribe, SimpleInnerSubscriber } from '../innerSubscribe';
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export function expand(project, concurrent, scheduler) {
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if (concurrent === void 0) {
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concurrent = Number.POSITIVE_INFINITY;
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}
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concurrent = (concurrent || 0) < 1 ? Number.POSITIVE_INFINITY : concurrent;
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return function (source) { return source.lift(new ExpandOperator(project, concurrent, scheduler)); };
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}
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var ExpandOperator = /*@__PURE__*/ (function () {
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function ExpandOperator(project, concurrent, scheduler) {
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this.project = project;
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this.concurrent = concurrent;
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this.scheduler = scheduler;
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}
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ExpandOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new ExpandSubscriber(subscriber, this.project, this.concurrent, this.scheduler));
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};
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return ExpandOperator;
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}());
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export { ExpandOperator };
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var ExpandSubscriber = /*@__PURE__*/ (function (_super) {
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tslib_1.__extends(ExpandSubscriber, _super);
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function ExpandSubscriber(destination, project, concurrent, scheduler) {
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var _this = _super.call(this, destination) || this;
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_this.project = project;
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_this.concurrent = concurrent;
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_this.scheduler = scheduler;
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_this.index = 0;
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_this.active = 0;
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_this.hasCompleted = false;
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if (concurrent < Number.POSITIVE_INFINITY) {
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_this.buffer = [];
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}
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return _this;
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}
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ExpandSubscriber.dispatch = function (arg) {
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var subscriber = arg.subscriber, result = arg.result, value = arg.value, index = arg.index;
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subscriber.subscribeToProjection(result, value, index);
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};
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ExpandSubscriber.prototype._next = function (value) {
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var destination = this.destination;
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if (destination.closed) {
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this._complete();
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return;
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}
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var index = this.index++;
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if (this.active < this.concurrent) {
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destination.next(value);
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try {
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var project = this.project;
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var result = project(value, index);
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if (!this.scheduler) {
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this.subscribeToProjection(result, value, index);
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}
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else {
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var state = { subscriber: this, result: result, value: value, index: index };
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var destination_1 = this.destination;
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destination_1.add(this.scheduler.schedule(ExpandSubscriber.dispatch, 0, state));
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}
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}
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catch (e) {
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destination.error(e);
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}
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}
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else {
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this.buffer.push(value);
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}
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};
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ExpandSubscriber.prototype.subscribeToProjection = function (result, value, index) {
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this.active++;
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var destination = this.destination;
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destination.add(innerSubscribe(result, new SimpleInnerSubscriber(this)));
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};
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ExpandSubscriber.prototype._complete = function () {
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this.hasCompleted = true;
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if (this.hasCompleted && this.active === 0) {
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this.destination.complete();
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}
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this.unsubscribe();
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};
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ExpandSubscriber.prototype.notifyNext = function (innerValue) {
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this._next(innerValue);
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};
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ExpandSubscriber.prototype.notifyComplete = function () {
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var buffer = this.buffer;
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this.active--;
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if (buffer && buffer.length > 0) {
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this._next(buffer.shift());
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}
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if (this.hasCompleted && this.active === 0) {
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this.destination.complete();
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}
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};
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return ExpandSubscriber;
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}(SimpleOuterSubscriber));
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export { ExpandSubscriber };
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//# sourceMappingURL=expand.js.map
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