| "use strict"; |
| var __extends = (this && this.__extends) || (function () { |
| var extendStatics = function (d, b) { |
| extendStatics = Object.setPrototypeOf || |
| ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || |
| function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; |
| return extendStatics(d, b); |
| } |
| return function (d, b) { |
| extendStatics(d, b); |
| function __() { this.constructor = d; } |
| d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); |
| }; |
| })(); |
| Object.defineProperty(exports, "__esModule", { value: true }); |
| var Subscriber_1 = require("../Subscriber"); |
| var ArgumentOutOfRangeError_1 = require("../util/ArgumentOutOfRangeError"); |
| var empty_1 = require("../observable/empty"); |
| function takeLast(count) { |
| return function takeLastOperatorFunction(source) { |
| if (count === 0) { |
| return empty_1.empty(); |
| } |
| else { |
| return source.lift(new TakeLastOperator(count)); |
| } |
| }; |
| } |
| exports.takeLast = takeLast; |
| var TakeLastOperator = (function () { |
| function TakeLastOperator(total) { |
| this.total = total; |
| if (this.total < 0) { |
| throw new ArgumentOutOfRangeError_1.ArgumentOutOfRangeError; |
| } |
| } |
| TakeLastOperator.prototype.call = function (subscriber, source) { |
| return source.subscribe(new TakeLastSubscriber(subscriber, this.total)); |
| }; |
| return TakeLastOperator; |
| }()); |
| var TakeLastSubscriber = (function (_super) { |
| __extends(TakeLastSubscriber, _super); |
| function TakeLastSubscriber(destination, total) { |
| var _this = _super.call(this, destination) || this; |
| _this.total = total; |
| _this.ring = new Array(); |
| _this.count = 0; |
| return _this; |
| } |
| TakeLastSubscriber.prototype._next = function (value) { |
| var ring = this.ring; |
| var total = this.total; |
| var count = this.count++; |
| if (ring.length < total) { |
| ring.push(value); |
| } |
| else { |
| var index = count % total; |
| ring[index] = value; |
| } |
| }; |
| TakeLastSubscriber.prototype._complete = function () { |
| var destination = this.destination; |
| var count = this.count; |
| if (count > 0) { |
| var total = this.count >= this.total ? this.total : this.count; |
| var ring = this.ring; |
| for (var i = 0; i < total; i++) { |
| var idx = (count++) % total; |
| destination.next(ring[idx]); |
| } |
| } |
| destination.complete(); |
| }; |
| return TakeLastSubscriber; |
| }(Subscriber_1.Subscriber)); |
| //# sourceMappingURL=takeLast.js.map |