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/** PURE_IMPORTS_START _util_isArray,_util_isObject,_util_isFunction,_util_UnsubscriptionError PURE_IMPORTS_END */
import { isArray } from './util/isArray';
import { isObject } from './util/isObject';
import { isFunction } from './util/isFunction';
import { UnsubscriptionError } from './util/UnsubscriptionError';
var Subscription = /*@__PURE__*/ (function () {
function Subscription(unsubscribe) {
this.closed = false;
this._parentOrParents = null;
this._subscriptions = null;
if (unsubscribe) {
this._ctorUnsubscribe = true;
this._unsubscribe = unsubscribe;
}
}
Subscription.prototype.unsubscribe = function () {
var errors;
if (this.closed) {
return;
}
var _a = this, _parentOrParents = _a._parentOrParents, _ctorUnsubscribe = _a._ctorUnsubscribe, _unsubscribe = _a._unsubscribe, _subscriptions = _a._subscriptions;
this.closed = true;
this._parentOrParents = null;
this._subscriptions = null;
if (_parentOrParents instanceof Subscription) {
_parentOrParents.remove(this);
}
else if (_parentOrParents !== null) {
for (var index = 0; index < _parentOrParents.length; ++index) {
var parent_1 = _parentOrParents[index];
parent_1.remove(this);
}
}
if (isFunction(_unsubscribe)) {
if (_ctorUnsubscribe) {
this._unsubscribe = undefined;
}
try {
_unsubscribe.call(this);
}
catch (e) {
errors = e instanceof UnsubscriptionError ? flattenUnsubscriptionErrors(e.errors) : [e];
}
}
if (isArray(_subscriptions)) {
var index = -1;
var len = _subscriptions.length;
while (++index < len) {
var sub = _subscriptions[index];
if (isObject(sub)) {
try {
sub.unsubscribe();
}
catch (e) {
errors = errors || [];
if (e instanceof UnsubscriptionError) {
errors = errors.concat(flattenUnsubscriptionErrors(e.errors));
}
else {
errors.push(e);
}
}
}
}
}
if (errors) {
throw new UnsubscriptionError(errors);
}
};
Subscription.prototype.add = function (teardown) {
var subscription = teardown;
if (!teardown) {
return Subscription.EMPTY;
}
switch (typeof teardown) {
case 'function':
subscription = new Subscription(teardown);
case 'object':
if (subscription === this || subscription.closed || typeof subscription.unsubscribe !== 'function') {
return subscription;
}
else if (this.closed) {
subscription.unsubscribe();
return subscription;
}
else if (!(subscription instanceof Subscription)) {
var tmp = subscription;
subscription = new Subscription();
subscription._subscriptions = [tmp];
}
break;
default: {
throw new Error('unrecognized teardown ' + teardown + ' added to Subscription.');
}
}
var _parentOrParents = subscription._parentOrParents;
if (_parentOrParents === null) {
subscription._parentOrParents = this;
}
else if (_parentOrParents instanceof Subscription) {
if (_parentOrParents === this) {
return subscription;
}
subscription._parentOrParents = [_parentOrParents, this];
}
else if (_parentOrParents.indexOf(this) === -1) {
_parentOrParents.push(this);
}
else {
return subscription;
}
var subscriptions = this._subscriptions;
if (subscriptions === null) {
this._subscriptions = [subscription];
}
else {
subscriptions.push(subscription);
}
return subscription;
};
Subscription.prototype.remove = function (subscription) {
var subscriptions = this._subscriptions;
if (subscriptions) {
var subscriptionIndex = subscriptions.indexOf(subscription);
if (subscriptionIndex !== -1) {
subscriptions.splice(subscriptionIndex, 1);
}
}
};
Subscription.EMPTY = (function (empty) {
empty.closed = true;
return empty;
}(new Subscription()));
return Subscription;
}());
export { Subscription };
function flattenUnsubscriptionErrors(errors) {
return errors.reduce(function (errs, err) { return errs.concat((err instanceof UnsubscriptionError) ? err.errors : err); }, []);
}
//# sourceMappingURL=Subscription.js.map
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