49 lines
1.6 KiB
JavaScript
49 lines
1.6 KiB
JavaScript
"use strict";
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var __extends = (this && this.__extends) || function (d, b) {
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for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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var Subscriber_1 = require('../Subscriber');
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var ArgumentOutOfRangeError_1 = require('../util/ArgumentOutOfRangeError');
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var EmptyObservable_1 = require('../observable/EmptyObservable');
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function take(total) {
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if (total === 0) {
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return new EmptyObservable_1.EmptyObservable();
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}
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else {
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return this.lift(new TakeOperator(total));
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}
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}
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exports.take = take;
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var TakeOperator = (function () {
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function TakeOperator(total) {
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this.total = total;
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if (this.total < 0) {
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throw new ArgumentOutOfRangeError_1.ArgumentOutOfRangeError;
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}
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}
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TakeOperator.prototype.call = function (subscriber) {
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return new TakeSubscriber(subscriber, this.total);
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};
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return TakeOperator;
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}());
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var TakeSubscriber = (function (_super) {
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__extends(TakeSubscriber, _super);
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function TakeSubscriber(destination, total) {
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_super.call(this, destination);
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this.total = total;
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this.count = 0;
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}
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TakeSubscriber.prototype._next = function (value) {
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var total = this.total;
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if (++this.count <= total) {
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this.destination.next(value);
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if (this.count === total) {
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this.destination.complete();
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}
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}
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};
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return TakeSubscriber;
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}(Subscriber_1.Subscriber));
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//# sourceMappingURL=take.js.map
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