work.suroh.tk/node_modules/rxjs/_esm5/observable/IfObservable.js

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2019-12-02 12:22:45 +00:00
/** PURE_IMPORTS_START .._Observable,.._util_subscribeToResult,.._OuterSubscriber 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 { Observable } from '../Observable';
import { subscribeToResult } from '../util/subscribeToResult';
import { OuterSubscriber } from '../OuterSubscriber';
/**
* We need this JSDoc comment for affecting ESDoc.
* @extends {Ignored}
* @hide true
*/
export var IfObservable = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
__extends(IfObservable, _super);
function IfObservable(condition, thenSource, elseSource) {
_super.call(this);
this.condition = condition;
this.thenSource = thenSource;
this.elseSource = elseSource;
}
IfObservable.create = function (condition, thenSource, elseSource) {
return new IfObservable(condition, thenSource, elseSource);
};
/** @deprecated internal use only */ IfObservable.prototype._subscribe = function (subscriber) {
var _a = this, condition = _a.condition, thenSource = _a.thenSource, elseSource = _a.elseSource;
return new IfSubscriber(subscriber, condition, thenSource, elseSource);
};
return IfObservable;
}(Observable));
var IfSubscriber = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
__extends(IfSubscriber, _super);
function IfSubscriber(destination, condition, thenSource, elseSource) {
_super.call(this, destination);
this.condition = condition;
this.thenSource = thenSource;
this.elseSource = elseSource;
this.tryIf();
}
IfSubscriber.prototype.tryIf = function () {
var _a = this, condition = _a.condition, thenSource = _a.thenSource, elseSource = _a.elseSource;
var result;
try {
result = condition();
var source = result ? thenSource : elseSource;
if (source) {
this.add(subscribeToResult(this, source));
}
else {
this._complete();
}
}
catch (err) {
this._error(err);
}
};
return IfSubscriber;
}(OuterSubscriber));
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