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