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import { isFunction } from './util/isFunction';
import { empty as emptyObserver } from './Observer';
import { Subscription } from './Subscription';
import { rxSubscriber as rxSubscriberSymbol } from '../internal/symbol/rxSubscriber';
import { config } from './config';
import { hostReportError } from './util/hostReportError';
export class Subscriber extends Subscription {
constructor(destinationOrNext, error, complete) {
super();
this.syncErrorValue = null;
this.syncErrorThrown = false;
this.syncErrorThrowable = false;
this.isStopped = false;
switch (arguments.length) {
case 0:
this.destination = emptyObserver;
break;
case 1:
if (!destinationOrNext) {
this.destination = emptyObserver;
break;
}
if (typeof destinationOrNext === 'object') {
if (destinationOrNext instanceof Subscriber) {
this.syncErrorThrowable = destinationOrNext.syncErrorThrowable;
this.destination = destinationOrNext;
destinationOrNext.add(this);
}
else {
this.syncErrorThrowable = true;
this.destination = new SafeSubscriber(this, destinationOrNext);
}
break;
}
default:
this.syncErrorThrowable = true;
this.destination = new SafeSubscriber(this, destinationOrNext, error, complete);
break;
}
}
[rxSubscriberSymbol]() { return this; }
static create(next, error, complete) {
const subscriber = new Subscriber(next, error, complete);
subscriber.syncErrorThrowable = false;
return subscriber;
}
next(value) {
if (!this.isStopped) {
this._next(value);
}
}
error(err) {
if (!this.isStopped) {
this.isStopped = true;
this._error(err);
}
}
complete() {
if (!this.isStopped) {
this.isStopped = true;
this._complete();
}
}
unsubscribe() {
if (this.closed) {
return;
}
this.isStopped = true;
super.unsubscribe();
}
_next(value) {
this.destination.next(value);
}
_error(err) {
this.destination.error(err);
this.unsubscribe();
}
_complete() {
this.destination.complete();
this.unsubscribe();
}
_unsubscribeAndRecycle() {
const { _parentOrParents } = this;
this._parentOrParents = null;
this.unsubscribe();
this.closed = false;
this.isStopped = false;
this._parentOrParents = _parentOrParents;
return this;
}
}
export class SafeSubscriber extends Subscriber {
constructor(_parentSubscriber, observerOrNext, error, complete) {
super();
this._parentSubscriber = _parentSubscriber;
let next;
let context = this;
if (isFunction(observerOrNext)) {
next = observerOrNext;
}
else if (observerOrNext) {
next = observerOrNext.next;
error = observerOrNext.error;
complete = observerOrNext.complete;
if (observerOrNext !== emptyObserver) {
context = Object.create(observerOrNext);
if (isFunction(context.unsubscribe)) {
this.add(context.unsubscribe.bind(context));
}
context.unsubscribe = this.unsubscribe.bind(this);
}
}
this._context = context;
this._next = next;
this._error = error;
this._complete = complete;
}
next(value) {
if (!this.isStopped && this._next) {
const { _parentSubscriber } = this;
if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {
this.__tryOrUnsub(this._next, value);
}
else if (this.__tryOrSetError(_parentSubscriber, this._next, value)) {
this.unsubscribe();
}
}
}
error(err) {
if (!this.isStopped) {
const { _parentSubscriber } = this;
const { useDeprecatedSynchronousErrorHandling } = config;
if (this._error) {
if (!useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {
this.__tryOrUnsub(this._error, err);
this.unsubscribe();
}
else {
this.__tryOrSetError(_parentSubscriber, this._error, err);
this.unsubscribe();
}
}
else if (!_parentSubscriber.syncErrorThrowable) {
this.unsubscribe();
if (useDeprecatedSynchronousErrorHandling) {
throw err;
}
hostReportError(err);
}
else {
if (useDeprecatedSynchronousErrorHandling) {
_parentSubscriber.syncErrorValue = err;
_parentSubscriber.syncErrorThrown = true;
}
else {
hostReportError(err);
}
this.unsubscribe();
}
}
}
complete() {
if (!this.isStopped) {
const { _parentSubscriber } = this;
if (this._complete) {
const wrappedComplete = () => this._complete.call(this._context);
if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {
this.__tryOrUnsub(wrappedComplete);
this.unsubscribe();
}
else {
this.__tryOrSetError(_parentSubscriber, wrappedComplete);
this.unsubscribe();
}
}
else {
this.unsubscribe();
}
}
}
__tryOrUnsub(fn, value) {
try {
fn.call(this._context, value);
}
catch (err) {
this.unsubscribe();
if (config.useDeprecatedSynchronousErrorHandling) {
throw err;
}
else {
hostReportError(err);
}
}
}
__tryOrSetError(parent, fn, value) {
if (!config.useDeprecatedSynchronousErrorHandling) {
throw new Error('bad call');
}
try {
fn.call(this._context, value);
}
catch (err) {
if (config.useDeprecatedSynchronousErrorHandling) {
parent.syncErrorValue = err;
parent.syncErrorThrown = true;
return true;
}
else {
hostReportError(err);
return true;
}
}
return false;
}
_unsubscribe() {
const { _parentSubscriber } = this;
this._context = null;
this._parentSubscriber = null;
_parentSubscriber.unsubscribe();
}
}
//# sourceMappingURL=Subscriber.js.map