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- 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 __());
- };
- })();
- var __assign = (this && this.__assign) || function () {
- __assign = Object.assign || function(t) {
- for (var s, i = 1, n = arguments.length; i < n; i++) {
- s = arguments[i];
- for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
- t[p] = s[p];
- }
- return t;
- };
- return __assign.apply(this, arguments);
- };
- /** 表示可清理的资源,比如 Observable 的执行 */
- var Subscription = /** @class */ (function () {
- function Subscription() {
- /** 用来标示该 Subscription 是否被取消订阅的标示位 */
- this.closed = false;
- }
- /** 取消 observer 的订阅 */
- Subscription.prototype.unsubscribe = function () {
- if (this.closed) {
- return;
- }
- this.closed = true;
- if (this._unsubscribe) {
- this._unsubscribe();
- }
- };
- /** 添加一个 tear down 在该 Subscription 的 unsubscribe() 期间调用 */
- Subscription.prototype.add = function (teardown) {
- this._unsubscribe = teardown;
- };
- return Subscription;
- }());
- /**
- * 实现 Observer 接口并且继承 Subscription 类,Observer 是消费 Observable 值的公有 API
- * 所有 Observers 都转化成了 Subscriber,以便提供类似 Subscription 的能力,比如 unsubscribe
- */
- var Subscriber = /** @class */ (function (_super) {
- __extends(Subscriber, _super);
- function Subscriber(observerOrNext, error, complete) {
- var _this = _super.call(this) || this;
- _this.isStopped = false;
- if (observerOrNext && typeof observerOrNext === 'object') {
- _this.destination = observerOrNext;
- }
- else {
- _this.destination = __assign(__assign(__assign({}, observerOrNext && { next: observerOrNext }), error && { error: error }), complete && { complete: complete });
- }
- return _this;
- }
- Subscriber.prototype.unsubscribe = function () {
- if (this.closed) {
- return;
- }
- this.isStopped = true;
- _super.prototype.unsubscribe.call(this);
- };
- Subscriber.prototype.next = function (value) {
- if (!this.isStopped && this.destination.next) {
- this.destination.next(value);
- }
- };
- Subscriber.prototype.error = function (err) {
- if (!this.isStopped && this.destination.error) {
- this.isStopped = true;
- this.destination.error(err);
- }
- };
- Subscriber.prototype.complete = function (result) {
- if (!this.isStopped && this.destination.complete) {
- this.isStopped = true;
- this.destination.complete(result);
- }
- };
- return Subscriber;
- }(Subscription));
- export { Subscriber };
- /** 可观察对象,当前的上传事件的集合 */
- var Observable = /** @class */ (function () {
- function Observable(_subscribe) {
- this._subscribe = _subscribe;
- }
- Observable.prototype.subscribe = function (observerOrNext, error, complete) {
- var sink = new Subscriber(observerOrNext, error, complete);
- sink.add(this._subscribe(sink));
- return sink;
- };
- return Observable;
- }());
- export { Observable };
- //# sourceMappingURL=observable.js.map
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