63 lines
No EOL
2.1 KiB
JavaScript
63 lines
No EOL
2.1 KiB
JavaScript
"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
|