You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
2.3 KiB
66 lines
2.3 KiB
2 years ago
|
"use strict";
|
||
|
|
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 __());
|
||
|
|
};
|
||
|
|
var Subscriber_1 = require('../Subscriber');
|
||
|
|
/**
|
||
|
|
* Returns an Observable that skips all items emitted by the source Observable as long as a specified condition holds
|
||
|
|
* true, but emits all further source items as soon as the condition becomes false.
|
||
|
|
*
|
||
|
|
* <img src="./img/skipWhile.png" width="100%">
|
||
|
|
*
|
||
|
|
* @param {Function} predicate - A function to test each item emitted from the source Observable.
|
||
|
|
* @return {Observable<T>} An Observable that begins emitting items emitted by the source Observable when the
|
||
|
|
* specified predicate becomes false.
|
||
|
|
* @method skipWhile
|
||
|
|
* @owner Observable
|
||
|
|
*/
|
||
|
|
function skipWhile(predicate) {
|
||
|
|
return function (source) { return source.lift(new SkipWhileOperator(predicate)); };
|
||
|
|
}
|
||
|
|
exports.skipWhile = skipWhile;
|
||
|
|
var SkipWhileOperator = (function () {
|
||
|
|
function SkipWhileOperator(predicate) {
|
||
|
|
this.predicate = predicate;
|
||
|
|
}
|
||
|
|
SkipWhileOperator.prototype.call = function (subscriber, source) {
|
||
|
|
return source.subscribe(new SkipWhileSubscriber(subscriber, this.predicate));
|
||
|
|
};
|
||
|
|
return SkipWhileOperator;
|
||
|
|
}());
|
||
|
|
/**
|
||
|
|
* We need this JSDoc comment for affecting ESDoc.
|
||
|
|
* @ignore
|
||
|
|
* @extends {Ignored}
|
||
|
|
*/
|
||
|
|
var SkipWhileSubscriber = (function (_super) {
|
||
|
|
__extends(SkipWhileSubscriber, _super);
|
||
|
|
function SkipWhileSubscriber(destination, predicate) {
|
||
|
|
_super.call(this, destination);
|
||
|
|
this.predicate = predicate;
|
||
|
|
this.skipping = true;
|
||
|
|
this.index = 0;
|
||
|
|
}
|
||
|
|
SkipWhileSubscriber.prototype._next = function (value) {
|
||
|
|
var destination = this.destination;
|
||
|
|
if (this.skipping) {
|
||
|
|
this.tryCallPredicate(value);
|
||
|
|
}
|
||
|
|
if (!this.skipping) {
|
||
|
|
destination.next(value);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
SkipWhileSubscriber.prototype.tryCallPredicate = function (value) {
|
||
|
|
try {
|
||
|
|
var result = this.predicate(value, this.index++);
|
||
|
|
this.skipping = Boolean(result);
|
||
|
|
}
|
||
|
|
catch (err) {
|
||
|
|
this.destination.error(err);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
return SkipWhileSubscriber;
|
||
|
|
}(Subscriber_1.Subscriber));
|
||
|
|
//# sourceMappingURL=skipWhile.js.map
|