wed
Version:
Wed is a schema-aware editor for XML documents.
304 lines (300 loc) • 11.6 kB
JavaScript
define(function(require,exports,module){
/** PURE_IMPORTS_START tslib,_util_isFunction,_Observer,_Subscription,_internal_symbol_rxSubscriber,_config,_util_hostReportError PURE_IMPORTS_END */
import * as tslib_1 from "tslib";
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';
/**
* 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>
*/
var Subscriber = /*@__PURE__*/ (function (_super) {
tslib_1.__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) {
var _this = _super.call(this) || this;
/** @internal */ _this.syncErrorValue = null;
/** @internal */ _this.syncErrorThrown = false;
/** @internal */ _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): For situations where Node has multiple copies of rxjs in
// node_modules, we cannot rely on `instanceof` checks
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;
}
return _this;
}
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.
* @nocollapse
*/
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 This is an internal implementation detail, do not use. */
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));
export { Subscriber };
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
var SafeSubscriber = /*@__PURE__*/ (function (_super) {
tslib_1.__extends(SafeSubscriber, _super);
function SafeSubscriber(_parentSubscriber, observerOrNext, error, complete) {
var _this = _super.call(this) || 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;
return _this;
}
SafeSubscriber.prototype.next = function (value) {
if (!this.isStopped && this._next) {
var _parentSubscriber = this._parentSubscriber;
if (!config.useDeprecatedSynchronousErrorHandling || !_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;
var useDeprecatedSynchronousErrorHandling = config.useDeprecatedSynchronousErrorHandling;
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();
}
}
};
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 (!config.useDeprecatedSynchronousErrorHandling || !_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();
if (config.useDeprecatedSynchronousErrorHandling) {
throw err;
}
else {
hostReportError(err);
}
}
};
SafeSubscriber.prototype.__tryOrSetError = function (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;
};
/** @deprecated This is an internal implementation detail, do not use. */
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
return module.exports;
});