273 lines
10 KiB
JavaScript
Executable File
273 lines
10 KiB
JavaScript
Executable File
/** PURE_IMPORTS_START ._util_isFunction,._Subscription,._Observer,._symbol_rxSubscriber PURE_IMPORTS_END */
|
|
var __extends = (this && this.__extends) || function (d, b) {
|
|
for (var p in b)
|
|
if (b.hasOwnProperty(p))
|
|
d[p] = b[p];
|
|
function __() { this.constructor = d; }
|
|
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
|
|
};
|
|
import { isFunction } from './util/isFunction';
|
|
import { Subscription } from './Subscription';
|
|
import { empty as emptyObserver } from './Observer';
|
|
import { rxSubscriber as rxSubscriberSymbol } from './symbol/rxSubscriber';
|
|
/**
|
|
* Implements the {@link Observer} interface and extends the
|
|
* {@link Subscription} class. While the {@link Observer} is the public API for
|
|
* consuming the values of an {@link Observable}, all Observers get converted to
|
|
* a Subscriber, in order to provide Subscription-like capabilities such as
|
|
* `unsubscribe`. Subscriber is a common type in RxJS, and crucial for
|
|
* implementing operators, but it is rarely used as a public API.
|
|
*
|
|
* @class Subscriber<T>
|
|
*/
|
|
export var Subscriber = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
|
|
__extends(Subscriber, _super);
|
|
/**
|
|
* @param {Observer|function(value: T): void} [destinationOrNext] A partially
|
|
* defined Observer or a `next` callback function.
|
|
* @param {function(e: ?any): void} [error] The `error` callback of an
|
|
* Observer.
|
|
* @param {function(): void} [complete] The `complete` callback of an
|
|
* Observer.
|
|
*/
|
|
function Subscriber(destinationOrNext, error, complete) {
|
|
_super.call(this);
|
|
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') {
|
|
// HACK(benlesh): To resolve an issue where Node users may have multiple
|
|
// copies of rxjs in their node_modules directory.
|
|
if (isTrustedSubscriber(destinationOrNext)) {
|
|
var trustedSubscriber = destinationOrNext[rxSubscriberSymbol]();
|
|
this.syncErrorThrowable = trustedSubscriber.syncErrorThrowable;
|
|
this.destination = trustedSubscriber;
|
|
trustedSubscriber.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;
|
|
}
|
|
}
|
|
Subscriber.prototype[rxSubscriberSymbol] = function () { return this; };
|
|
/**
|
|
* A static factory for a Subscriber, given a (potentially partial) definition
|
|
* of an Observer.
|
|
* @param {function(x: ?T): void} [next] The `next` callback of an Observer.
|
|
* @param {function(e: ?any): void} [error] The `error` callback of an
|
|
* Observer.
|
|
* @param {function(): void} [complete] The `complete` callback of an
|
|
* Observer.
|
|
* @return {Subscriber<T>} A Subscriber wrapping the (partially defined)
|
|
* Observer represented by the given arguments.
|
|
*/
|
|
Subscriber.create = function (next, error, complete) {
|
|
var subscriber = new Subscriber(next, error, complete);
|
|
subscriber.syncErrorThrowable = false;
|
|
return subscriber;
|
|
};
|
|
/**
|
|
* The {@link Observer} callback to receive notifications of type `next` from
|
|
* the Observable, with a value. The Observable may call this method 0 or more
|
|
* times.
|
|
* @param {T} [value] The `next` value.
|
|
* @return {void}
|
|
*/
|
|
Subscriber.prototype.next = function (value) {
|
|
if (!this.isStopped) {
|
|
this._next(value);
|
|
}
|
|
};
|
|
/**
|
|
* The {@link Observer} callback to receive notifications of type `error` from
|
|
* the Observable, with an attached {@link Error}. Notifies the Observer that
|
|
* the Observable has experienced an error condition.
|
|
* @param {any} [err] The `error` exception.
|
|
* @return {void}
|
|
*/
|
|
Subscriber.prototype.error = function (err) {
|
|
if (!this.isStopped) {
|
|
this.isStopped = true;
|
|
this._error(err);
|
|
}
|
|
};
|
|
/**
|
|
* The {@link Observer} callback to receive a valueless notification of type
|
|
* `complete` from the Observable. Notifies the Observer that the Observable
|
|
* has finished sending push-based notifications.
|
|
* @return {void}
|
|
*/
|
|
Subscriber.prototype.complete = function () {
|
|
if (!this.isStopped) {
|
|
this.isStopped = true;
|
|
this._complete();
|
|
}
|
|
};
|
|
Subscriber.prototype.unsubscribe = function () {
|
|
if (this.closed) {
|
|
return;
|
|
}
|
|
this.isStopped = true;
|
|
_super.prototype.unsubscribe.call(this);
|
|
};
|
|
Subscriber.prototype._next = function (value) {
|
|
this.destination.next(value);
|
|
};
|
|
Subscriber.prototype._error = function (err) {
|
|
this.destination.error(err);
|
|
this.unsubscribe();
|
|
};
|
|
Subscriber.prototype._complete = function () {
|
|
this.destination.complete();
|
|
this.unsubscribe();
|
|
};
|
|
/** @deprecated internal use only */ Subscriber.prototype._unsubscribeAndRecycle = function () {
|
|
var _a = this, _parent = _a._parent, _parents = _a._parents;
|
|
this._parent = null;
|
|
this._parents = null;
|
|
this.unsubscribe();
|
|
this.closed = false;
|
|
this.isStopped = false;
|
|
this._parent = _parent;
|
|
this._parents = _parents;
|
|
return this;
|
|
};
|
|
return Subscriber;
|
|
}(Subscription));
|
|
/**
|
|
* We need this JSDoc comment for affecting ESDoc.
|
|
* @ignore
|
|
* @extends {Ignored}
|
|
*/
|
|
var SafeSubscriber = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
|
|
__extends(SafeSubscriber, _super);
|
|
function SafeSubscriber(_parentSubscriber, observerOrNext, error, complete) {
|
|
_super.call(this);
|
|
this._parentSubscriber = _parentSubscriber;
|
|
var next;
|
|
var 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;
|
|
}
|
|
SafeSubscriber.prototype.next = function (value) {
|
|
if (!this.isStopped && this._next) {
|
|
var _parentSubscriber = this._parentSubscriber;
|
|
if (!_parentSubscriber.syncErrorThrowable) {
|
|
this.__tryOrUnsub(this._next, value);
|
|
}
|
|
else if (this.__tryOrSetError(_parentSubscriber, this._next, value)) {
|
|
this.unsubscribe();
|
|
}
|
|
}
|
|
};
|
|
SafeSubscriber.prototype.error = function (err) {
|
|
if (!this.isStopped) {
|
|
var _parentSubscriber = this._parentSubscriber;
|
|
if (this._error) {
|
|
if (!_parentSubscriber.syncErrorThrowable) {
|
|
this.__tryOrUnsub(this._error, err);
|
|
this.unsubscribe();
|
|
}
|
|
else {
|
|
this.__tryOrSetError(_parentSubscriber, this._error, err);
|
|
this.unsubscribe();
|
|
}
|
|
}
|
|
else if (!_parentSubscriber.syncErrorThrowable) {
|
|
this.unsubscribe();
|
|
throw err;
|
|
}
|
|
else {
|
|
_parentSubscriber.syncErrorValue = err;
|
|
_parentSubscriber.syncErrorThrown = true;
|
|
this.unsubscribe();
|
|
}
|
|
}
|
|
};
|
|
SafeSubscriber.prototype.complete = function () {
|
|
var _this = this;
|
|
if (!this.isStopped) {
|
|
var _parentSubscriber = this._parentSubscriber;
|
|
if (this._complete) {
|
|
var wrappedComplete = function () { return _this._complete.call(_this._context); };
|
|
if (!_parentSubscriber.syncErrorThrowable) {
|
|
this.__tryOrUnsub(wrappedComplete);
|
|
this.unsubscribe();
|
|
}
|
|
else {
|
|
this.__tryOrSetError(_parentSubscriber, wrappedComplete);
|
|
this.unsubscribe();
|
|
}
|
|
}
|
|
else {
|
|
this.unsubscribe();
|
|
}
|
|
}
|
|
};
|
|
SafeSubscriber.prototype.__tryOrUnsub = function (fn, value) {
|
|
try {
|
|
fn.call(this._context, value);
|
|
}
|
|
catch (err) {
|
|
this.unsubscribe();
|
|
throw err;
|
|
}
|
|
};
|
|
SafeSubscriber.prototype.__tryOrSetError = function (parent, fn, value) {
|
|
try {
|
|
fn.call(this._context, value);
|
|
}
|
|
catch (err) {
|
|
parent.syncErrorValue = err;
|
|
parent.syncErrorThrown = true;
|
|
return true;
|
|
}
|
|
return false;
|
|
};
|
|
/** @deprecated internal use only */ SafeSubscriber.prototype._unsubscribe = function () {
|
|
var _parentSubscriber = this._parentSubscriber;
|
|
this._context = null;
|
|
this._parentSubscriber = null;
|
|
_parentSubscriber.unsubscribe();
|
|
};
|
|
return SafeSubscriber;
|
|
}(Subscriber));
|
|
function isTrustedSubscriber(obj) {
|
|
return obj instanceof Subscriber || ('syncErrorThrowable' in obj && obj[rxSubscriberSymbol]);
|
|
}
|
|
//# sourceMappingURL=Subscriber.js.map
|