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