64 lines
2.4 KiB
JavaScript
64 lines
2.4 KiB
JavaScript
"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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return extendStatics(d, b);
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}
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return function (d, b) {
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extendStatics(d, b);
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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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})();
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Object.defineProperty(exports, "__esModule", { value: true });
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var Subscriber_1 = require("../Subscriber");
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var ArgumentOutOfRangeError_1 = require("../util/ArgumentOutOfRangeError");
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function skipLast(count) {
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return function (source) { return source.lift(new SkipLastOperator(count)); };
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}
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exports.skipLast = skipLast;
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var SkipLastOperator = (function () {
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function SkipLastOperator(_skipCount) {
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this._skipCount = _skipCount;
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if (this._skipCount < 0) {
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throw new ArgumentOutOfRangeError_1.ArgumentOutOfRangeError;
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}
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}
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SkipLastOperator.prototype.call = function (subscriber, source) {
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if (this._skipCount === 0) {
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return source.subscribe(new Subscriber_1.Subscriber(subscriber));
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}
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else {
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return source.subscribe(new SkipLastSubscriber(subscriber, this._skipCount));
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}
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};
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return SkipLastOperator;
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}());
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var SkipLastSubscriber = (function (_super) {
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__extends(SkipLastSubscriber, _super);
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function SkipLastSubscriber(destination, _skipCount) {
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var _this = _super.call(this, destination) || this;
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_this._skipCount = _skipCount;
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_this._count = 0;
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_this._ring = new Array(_skipCount);
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return _this;
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}
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SkipLastSubscriber.prototype._next = function (value) {
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var skipCount = this._skipCount;
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var count = this._count++;
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if (count < skipCount) {
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this._ring[count] = value;
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}
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else {
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var currentIndex = count % skipCount;
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var ring = this._ring;
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var oldValue = ring[currentIndex];
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ring[currentIndex] = value;
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this.destination.next(oldValue);
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}
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};
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return SkipLastSubscriber;
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}(Subscriber_1.Subscriber));
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//# sourceMappingURL=skipLast.js.map
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