<?php /** * This file is part of the MathExecutor package * * (c) Alexander Kiryukhin * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code */ namespace NXP\Classes\Token; /** * @author Alexander Kiryukhin <alexander@symdev.org> */ interface InterfaceOperator { /** * @return int */ public function getPriority(); /** * @return string */ public function getAssociation(); /** * @param array $stack * @return TokenNumber */ public function execute(&$stack); }