var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) Eif (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var Subscriber_1 = require('../Subscriber');
var tryCatch_1 = require('../util/tryCatch');
var errorObject_1 = require('../util/errorObject');
/**
* Catches errors on the observable to be handled by returning a new observable or throwing an error.
* @param {function} selector a function that takes as arguments `err`, which is the error, and `caught`, which
* is the source observable, in case you'd like to "retry" that observable by returning it again. Whatever observable
* is returned by the `selector` will be used to continue the observable chain.
* @return {Observable} an observable that originates from either the source or the observable returned by the
* catch `selector` function.
*/
function _catch(selector) {
var catchOperator = new CatchOperator(selector);
var caught = this.lift(catchOperator);
catchOperator.caught = caught;
return caught;
}
exports._catch = _catch;
var CatchOperator = (function () {
function CatchOperator(selector) {
this.selector = selector;
}
CatchOperator.prototype.call = function (subscriber) {
return new CatchSubscriber(subscriber, this.selector, this.caught);
};
return CatchOperator;
})();
var CatchSubscriber = (function (_super) {
__extends(CatchSubscriber, _super);
function CatchSubscriber(destination, selector, caught) {
_super.call(this, null);
this.destination = destination;
this.selector = selector;
this.caught = caught;
this.lastSubscription = this;
this.destination.add(this);
}
CatchSubscriber.prototype._next = function (value) {
this.destination.next(value);
};
CatchSubscriber.prototype._error = function (err) {
var result = tryCatch_1.tryCatch(this.selector)(err, this.caught);
if (result === errorObject_1.errorObject) {
this.destination.error(errorObject_1.errorObject.e);
}
else {
this.lastSubscription.unsubscribe();
this.lastSubscription = result.subscribe(this.destination);
}
};
CatchSubscriber.prototype._complete = function () {
this.lastSubscription.unsubscribe();
this.destination.complete();
};
CatchSubscriber.prototype._unsubscribe = function () {
this.lastSubscription.unsubscribe();
};
return CatchSubscriber;
})(Subscriber_1.Subscriber);
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