PromiseResolver.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\promise;
 
final class PromiseResolver{
    private PromiseSharedData $shared;
    private Promise $promise;
 
    public function __construct(){
        $this->shared = new PromiseSharedData();
        $this->promise = new Promise($this->shared);
    }
 
    public function resolve(mixed $value) : void{
        if($this->shared->state !== null){
            throw new \LogicException("Promise has already been resolved/rejected");
        }
        $this->shared->state = true;
        $this->shared->result = $value;
        foreach($this->shared->onSuccess as $c){
            $c($value);
        }
        $this->shared->onSuccess = [];
        $this->shared->onFailure = [];
    }
 
    public function reject() : void{
        if($this->shared->state !== null){
            throw new \LogicException("Promise has already been resolved/rejected");
        }
        $this->shared->state = false;
        foreach($this->shared->onFailure as $c){
            $c();
        }
        $this->shared->onSuccess = [];
        $this->shared->onFailure = [];
    }
 
    public function getPromise() : Promise{
        return $this->promise;
    }
}