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Diffstat (limited to 'node_modules/rxjs/src/internal/Subject.ts')
| -rw-r--r-- | node_modules/rxjs/src/internal/Subject.ts | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/node_modules/rxjs/src/internal/Subject.ts b/node_modules/rxjs/src/internal/Subject.ts deleted file mode 100644 index 61ed267..0000000 --- a/node_modules/rxjs/src/internal/Subject.ts +++ /dev/null @@ -1,185 +0,0 @@ -import { Operator } from './Operator'; -import { Observable } from './Observable'; -import { Subscriber } from './Subscriber'; -import { Subscription, EMPTY_SUBSCRIPTION } from './Subscription'; -import { Observer, SubscriptionLike, TeardownLogic } from './types'; -import { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError'; -import { arrRemove } from './util/arrRemove'; -import { errorContext } from './util/errorContext'; - -/** - * A Subject is a special type of Observable that allows values to be - * multicasted to many Observers. Subjects are like EventEmitters. - * - * Every Subject is an Observable and an Observer. You can subscribe to a - * Subject, and you can call next to feed values as well as error and complete. - */ -export class Subject<T> extends Observable<T> implements SubscriptionLike { - closed = false; - - private currentObservers: Observer<T>[] | null = null; - - /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */ - observers: Observer<T>[] = []; - /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */ - isStopped = false; - /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */ - hasError = false; - /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */ - thrownError: any = null; - - /** - * Creates a "subject" by basically gluing an observer to an observable. - * - * @deprecated Recommended you do not use. Will be removed at some point in the future. Plans for replacement still under discussion. - */ - static create: (...args: any[]) => any = <T>(destination: Observer<T>, source: Observable<T>): AnonymousSubject<T> => { - return new AnonymousSubject<T>(destination, source); - }; - - constructor() { - // NOTE: This must be here to obscure Observable's constructor. - super(); - } - - /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */ - lift<R>(operator: Operator<T, R>): Observable<R> { - const subject = new AnonymousSubject(this, this); - subject.operator = operator as any; - return subject as any; - } - - /** @internal */ - protected _throwIfClosed() { - if (this.closed) { - throw new ObjectUnsubscribedError(); - } - } - - next(value: T) { - errorContext(() => { - this._throwIfClosed(); - if (!this.isStopped) { - if (!this.currentObservers) { - this.currentObservers = Array.from(this.observers); - } - for (const observer of this.currentObservers) { - observer.next(value); - } - } - }); - } - - error(err: any) { - errorContext(() => { - this._throwIfClosed(); - if (!this.isStopped) { - this.hasError = this.isStopped = true; - this.thrownError = err; - const { observers } = this; - while (observers.length) { - observers.shift()!.error(err); - } - } - }); - } - - complete() { - errorContext(() => { - this._throwIfClosed(); - if (!this.isStopped) { - this.isStopped = true; - const { observers } = this; - while (observers.length) { - observers.shift()!.complete(); - } - } - }); - } - - unsubscribe() { - this.isStopped = this.closed = true; - this.observers = this.currentObservers = null!; - } - - get observed() { - return this.observers?.length > 0; - } - - /** @internal */ - protected _trySubscribe(subscriber: Subscriber<T>): TeardownLogic { - this._throwIfClosed(); - return super._trySubscribe(subscriber); - } - - /** @internal */ - protected _subscribe(subscriber: Subscriber<T>): Subscription { - this._throwIfClosed(); - this._checkFinalizedStatuses(subscriber); - return this._innerSubscribe(subscriber); - } - - /** @internal */ - protected _innerSubscribe(subscriber: Subscriber<any>) { - const { hasError, isStopped, observers } = this; - if (hasError || isStopped) { - return EMPTY_SUBSCRIPTION; - } - this.currentObservers = null; - observers.push(subscriber); - return new Subscription(() => { - this.currentObservers = null; - arrRemove(observers, subscriber); - }); - } - - /** @internal */ - protected _checkFinalizedStatuses(subscriber: Subscriber<any>) { - const { hasError, thrownError, isStopped } = this; - if (hasError) { - subscriber.error(thrownError); - } else if (isStopped) { - subscriber.complete(); - } - } - - /** - * Creates a new Observable with this Subject as the source. You can do this - * to create custom Observer-side logic of the Subject and conceal it from - * code that uses the Observable. - * @return Observable that this Subject casts to. - */ - asObservable(): Observable<T> { - const observable: any = new Observable<T>(); - observable.source = this; - return observable; - } -} - -export class AnonymousSubject<T> extends Subject<T> { - constructor( - /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */ - public destination?: Observer<T>, - source?: Observable<T> - ) { - super(); - this.source = source; - } - - next(value: T) { - this.destination?.next?.(value); - } - - error(err: any) { - this.destination?.error?.(err); - } - - complete() { - this.destination?.complete?.(); - } - - /** @internal */ - protected _subscribe(subscriber: Subscriber<T>): Subscription { - return this.source?.subscribe(subscriber) ?? EMPTY_SUBSCRIPTION; - } -} |
