take.js
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"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 take(count) {
return function (source) {
if (count === 0) {
return empty_1.empty();
}
else {
return source.lift(new TakeOperator(count));
}
};
}
exports.take = take;
var TakeOperator = (function () {
function TakeOperator(total) {
this.total = total;
if (this.total < 0) {
throw new ArgumentOutOfRangeError_1.ArgumentOutOfRangeError;
}
}
TakeOperator.prototype.call = function (subscriber, source) {
return source.subscribe(new TakeSubscriber(subscriber, this.total));
};
return TakeOperator;
}());
var TakeSubscriber = (function (_super) {
__extends(TakeSubscriber, _super);
function TakeSubscriber(destination, total) {
var _this = _super.call(this, destination) || this;
_this.total = total;
_this.count = 0;
return _this;
}
TakeSubscriber.prototype._next = function (value) {
var total = this.total;
var count = ++this.count;
if (count <= total) {
this.destination.next(value);
if (count === total) {
this.destination.complete();
this.unsubscribe();
}
}
};
return TakeSubscriber;
}(Subscriber_1.Subscriber));
//# sourceMappingURL=take.js.map