@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
144 lines • 6.57 kB
JavaScript
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 __());
};
define(["require", "exports", '../Observable', '../util/tryCatch', '../util/errorObject', '../AsyncSubject'], function (require, exports, Observable_1, tryCatch_1, errorObject_1, AsyncSubject_1) {
"use strict";
/**
* We need this JSDoc comment for affecting ESDoc.
* @extends {Ignored}
* @hide true
*/
var BoundNodeCallbackObservable = (function (_super) {
__extends(BoundNodeCallbackObservable, _super);
function BoundNodeCallbackObservable(callbackFunc, selector, args, scheduler) {
_super.call(this);
this.callbackFunc = callbackFunc;
this.selector = selector;
this.args = args;
this.scheduler = scheduler;
}
/* tslint:enable:max-line-length */
/**
* Converts a node callback to an Observable.
* @param callbackFunc
* @param selector
* @param scheduler
* @return {function(...params: *): Observable<T>}
* @static true
* @name bindNodeCallback
* @owner Observable
*/
BoundNodeCallbackObservable.create = function (callbackFunc, selector, scheduler) {
if (selector === void 0) { selector = undefined; }
return function () {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i - 0] = arguments[_i];
}
return new BoundNodeCallbackObservable(callbackFunc, selector, args, scheduler);
};
};
BoundNodeCallbackObservable.prototype._subscribe = function (subscriber) {
var callbackFunc = this.callbackFunc;
var args = this.args;
var scheduler = this.scheduler;
var subject = this.subject;
if (!scheduler) {
if (!subject) {
subject = this.subject = new AsyncSubject_1.AsyncSubject();
var handler = function handlerFn() {
var innerArgs = [];
for (var _i = 0; _i < arguments.length; _i++) {
innerArgs[_i - 0] = arguments[_i];
}
var source = handlerFn.source;
var selector = source.selector, subject = source.subject;
var err = innerArgs.shift();
if (err) {
subject.error(err);
}
else if (selector) {
var result_1 = tryCatch_1.tryCatch(selector).apply(this, innerArgs);
if (result_1 === errorObject_1.errorObject) {
subject.error(errorObject_1.errorObject.e);
}
else {
subject.next(result_1);
subject.complete();
}
}
else {
subject.next(innerArgs.length === 1 ? innerArgs[0] : innerArgs);
subject.complete();
}
};
// use named function instance to avoid closure.
handler.source = this;
var result = tryCatch_1.tryCatch(callbackFunc).apply(this, args.concat(handler));
if (result === errorObject_1.errorObject) {
subject.error(errorObject_1.errorObject.e);
}
}
return subject.subscribe(subscriber);
}
else {
return scheduler.schedule(dispatch, 0, { source: this, subscriber: subscriber });
}
};
return BoundNodeCallbackObservable;
}(Observable_1.Observable));
exports.BoundNodeCallbackObservable = BoundNodeCallbackObservable;
function dispatch(state) {
var self = this;
var source = state.source, subscriber = state.subscriber;
var callbackFunc = source.callbackFunc, args = source.args, scheduler = source.scheduler;
var subject = source.subject;
if (!subject) {
subject = source.subject = new AsyncSubject_1.AsyncSubject();
var handler = function handlerFn() {
var innerArgs = [];
for (var _i = 0; _i < arguments.length; _i++) {
innerArgs[_i - 0] = arguments[_i];
}
var source = handlerFn.source;
var selector = source.selector, subject = source.subject;
var err = innerArgs.shift();
if (err) {
subject.error(err);
}
else if (selector) {
var result_2 = tryCatch_1.tryCatch(selector).apply(this, innerArgs);
if (result_2 === errorObject_1.errorObject) {
self.add(scheduler.schedule(dispatchError, 0, { err: errorObject_1.errorObject.e, subject: subject }));
}
else {
self.add(scheduler.schedule(dispatchNext, 0, { value: result_2, subject: subject }));
}
}
else {
var value = innerArgs.length === 1 ? innerArgs[0] : innerArgs;
self.add(scheduler.schedule(dispatchNext, 0, { value: value, subject: subject }));
}
};
// use named function to pass values in without closure
handler.source = source;
var result = tryCatch_1.tryCatch(callbackFunc).apply(this, args.concat(handler));
if (result === errorObject_1.errorObject) {
subject.error(errorObject_1.errorObject.e);
}
}
self.add(subject.subscribe(subscriber));
}
function dispatchNext(arg) {
var value = arg.value, subject = arg.subject;
subject.next(value);
subject.complete();
}
function dispatchError(arg) {
var err = arg.err, subject = arg.subject;
subject.error(err);
}
});
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