| "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 EmptyError_1 = require("../util/EmptyError"); |
| function single(predicate) { |
| return function (source) { return source.lift(new SingleOperator(predicate, source)); }; |
| } |
| exports.single = single; |
| var SingleOperator = (function () { |
| function SingleOperator(predicate, source) { |
| this.predicate = predicate; |
| this.source = source; |
| } |
| SingleOperator.prototype.call = function (subscriber, source) { |
| return source.subscribe(new SingleSubscriber(subscriber, this.predicate, this.source)); |
| }; |
| return SingleOperator; |
| }()); |
| var SingleSubscriber = (function (_super) { |
| __extends(SingleSubscriber, _super); |
| function SingleSubscriber(destination, predicate, source) { |
| var _this = _super.call(this, destination) || this; |
| _this.predicate = predicate; |
| _this.source = source; |
| _this.seenValue = false; |
| _this.index = 0; |
| return _this; |
| } |
| SingleSubscriber.prototype.applySingleValue = function (value) { |
| if (this.seenValue) { |
| this.destination.error('Sequence contains more than one element'); |
| } |
| else { |
| this.seenValue = true; |
| this.singleValue = value; |
| } |
| }; |
| SingleSubscriber.prototype._next = function (value) { |
| var index = this.index++; |
| if (this.predicate) { |
| this.tryNext(value, index); |
| } |
| else { |
| this.applySingleValue(value); |
| } |
| }; |
| SingleSubscriber.prototype.tryNext = function (value, index) { |
| try { |
| if (this.predicate(value, index, this.source)) { |
| this.applySingleValue(value); |
| } |
| } |
| catch (err) { |
| this.destination.error(err); |
| } |
| }; |
| SingleSubscriber.prototype._complete = function () { |
| var destination = this.destination; |
| if (this.index > 0) { |
| destination.next(this.seenValue ? this.singleValue : undefined); |
| destination.complete(); |
| } |
| else { |
| destination.error(new EmptyError_1.EmptyError); |
| } |
| }; |
| return SingleSubscriber; |
| }(Subscriber_1.Subscriber)); |
| //# sourceMappingURL=single.js.map |