ObjectManager.php

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<?php
namespace TYPO3\CMS\Extbase\Object;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

use TYPO3\CMS\Extbase\Object\Container\Container;

class ObjectManager implements ObjectManagerInterface
{
    protected $objectContainer;

    public function __construct()
    {
        $this->objectContainer = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Extbase\Object\Container\Container::class);
    }

    public function __sleep()
    {
        // Use get_objects_vars() instead of
        // a much more expensive Reflection:
        $properties = get_object_vars($this);
        unset($properties['objectContainer']);
        return array_keys($properties);
    }

    public function __wakeup()
    {
        $this->__construct();
    }

    public function isRegistered($objectName)
    {
        return class_exists($objectName, true);
    }

    public function get($objectName)
    {
        $arguments = func_get_args();
        array_shift($arguments);
        if ($objectName === 'DateTime') {
            array_unshift($arguments, $objectName);
            $instance = call_user_func_array([\TYPO3\CMS\Core\Utility\GeneralUtility::class, 'makeInstance'], $arguments);
        } else {
            $instance = $this->objectContainer->getInstance($objectName, $arguments);
        }
        return $instance;
    }

    public function getScope($objectName)
    {
        if (!$this->isRegistered($objectName)) {
            throw new \TYPO3\CMS\Extbase\Object\Container\Exception\UnknownObjectException('Object "' . $objectName . '" is not registered.', 1265367590);
        }
        return $this->objectContainer->isSingleton($objectName) ? Container::SCOPE_SINGLETON : Container::SCOPE_PROTOTYPE;
    }

    public function getEmptyObject($className)
    {
        return $this->objectContainer->getEmptyObject($className);
    }
}