mirror of
https://github.com/biobulkbende/biobulkbende.org.git
synced 2024-12-27 05:15:25 +00:00
64 lines
2.1 KiB
JavaScript
64 lines
2.1 KiB
JavaScript
import { Subscriber } from '../Subscriber';
|
|
/**
|
|
* Returns an Observable that emits whether or not every item of the source satisfies the condition specified.
|
|
*
|
|
* @example <caption>A simple example emitting true if all elements are less than 5, false otherwise</caption>
|
|
* Observable.of(1, 2, 3, 4, 5, 6)
|
|
* .every(x => x < 5)
|
|
* .subscribe(x => console.log(x)); // -> false
|
|
*
|
|
* @param {function} predicate A function for determining if an item meets a specified condition.
|
|
* @param {any} [thisArg] Optional object to use for `this` in the callback.
|
|
* @return {Observable} An Observable of booleans that determines if all items of the source Observable meet the condition specified.
|
|
* @method every
|
|
* @owner Observable
|
|
*/
|
|
export function every(predicate, thisArg) {
|
|
return (source) => source.lift(new EveryOperator(predicate, thisArg, source));
|
|
}
|
|
class EveryOperator {
|
|
constructor(predicate, thisArg, source) {
|
|
this.predicate = predicate;
|
|
this.thisArg = thisArg;
|
|
this.source = source;
|
|
}
|
|
call(observer, source) {
|
|
return source.subscribe(new EverySubscriber(observer, this.predicate, this.thisArg, this.source));
|
|
}
|
|
}
|
|
/**
|
|
* We need this JSDoc comment for affecting ESDoc.
|
|
* @ignore
|
|
* @extends {Ignored}
|
|
*/
|
|
class EverySubscriber extends Subscriber {
|
|
constructor(destination, predicate, thisArg, source) {
|
|
super(destination);
|
|
this.predicate = predicate;
|
|
this.thisArg = thisArg;
|
|
this.source = source;
|
|
this.index = 0;
|
|
this.thisArg = thisArg || this;
|
|
}
|
|
notifyComplete(everyValueMatch) {
|
|
this.destination.next(everyValueMatch);
|
|
this.destination.complete();
|
|
}
|
|
_next(value) {
|
|
let result = false;
|
|
try {
|
|
result = this.predicate.call(this.thisArg, value, this.index++, this.source);
|
|
}
|
|
catch (err) {
|
|
this.destination.error(err);
|
|
return;
|
|
}
|
|
if (!result) {
|
|
this.notifyComplete(false);
|
|
}
|
|
}
|
|
_complete() {
|
|
this.notifyComplete(true);
|
|
}
|
|
}
|
|
//# sourceMappingURL=every.js.map
|