ObjectStorage.php

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<?php
namespace ‪TYPO3\CMS\Extbase\Persistence;
 
/*
 * 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\Core\Utility\MathUtility;
 
class ‪ObjectStorage implements \Countable, \Iterator, \ArrayAccess, ‪ObjectMonitoringInterface
{
    private ‪$warning = 'You should never see this warning. If you do, you probably used PHP array functions like current() on the TYPO3\\CMS\\Extbase\\Persistence\\ObjectStorage. To retrieve the first result, you can use the rewind() and current() methods.';
 
    protected ‪$storage = [];
 
    protected ‪$isModified = false;
 
    protected ‪$addedObjectsPositions = [];
 
    protected ‪$removedObjectsPositions = [];
 
    protected ‪$positionCounter = 0;
 
    public function ‪rewind()
    {
        reset($this->storage);
    }
 
    public function ‪valid()
    {
        return ‪current($this->storage) !== false;
    }
 
    public function ‪key()
    {
        return ‪key($this->storage);
    }
 
    public function ‪current()
    {
        $item = ‪current($this->storage);
        return $item['obj'];
    }
 
    public function ‪next()
    {
        ‪next($this->storage);
    }
 
    public function ‪count()
    {
        return ‪count($this->storage);
    }
 
    public function ‪offsetSet($object, $information)
    {
        $this->isModified = true;
        $this->storage[spl_object_hash($object)] = ['obj' => $object, 'inf' => $information];
 
        $this->positionCounter++;
        $this->addedObjectsPositions[spl_object_hash($object)] = ‪$this->positionCounter;
    }
 
    public function ‪offsetExists($value)
    {
        return is_object($value) && isset($this->storage[spl_object_hash($value)])
            || ‪MathUtility::canBeInterpretedAsInteger($value) && isset(array_values($this->storage)[$value]);
    }
 
    public function ‪offsetUnset($value)
    {
        $this->isModified = true;
 
        $object = $value;
 
        if (‪MathUtility::canBeInterpretedAsInteger($value)) {
            $object = $this->‪offsetGet($value);
        }
 
        unset($this->storage[spl_object_hash($object)]);
 
        if (empty($this->storage)) {
            $this->positionCounter = 0;
        }
 
        $this->removedObjectsPositions[spl_object_hash($object)] = $this->addedObjectsPositions[spl_object_hash($object)] ?? null;
        unset($this->addedObjectsPositions[spl_object_hash($object)]);
    }
 
    public function ‪offsetGet($value)
    {
        if (‪MathUtility::canBeInterpretedAsInteger($value)) {
            return array_values($this->storage)[$value]['obj'];
        }
 
        return $this->storage[spl_object_hash($value)]['inf'];
    }
 
    public function ‪contains($object)
    {
        return $this->‪offsetExists($object);
    }
 
    public function ‪attach($object, $information = null)
    {
        $this->‪offsetSet($object, $information);
    }
 
    public function ‪detach($object)
    {
        $this->‪offsetUnset($object);
    }
 
    public function ‪getInfo()
    {
        $item = ‪current($this->storage);
        return $item['inf'];
    }
 
    public function ‪setInfo($data)
    {
        $this->isModified = true;
        $key = ‪key($this->storage);
        $this->storage[$key]['inf'] = $data;
    }
 
    public function ‪addAll(‪ObjectStorage $objectStorage)
    {
        foreach ($objectStorage as $object) {
            $this->‪attach($object, $objectStorage->‪getInfo());
        }
    }
 
    public function ‪removeAll(‪ObjectStorage $objectStorage)
    {
        foreach ($objectStorage as $object) {
            $this->‪detach($object);
        }
    }
 
    public function ‪toArray()
    {
        $array = [];
        ‪$storage = array_values($this->storage);
        foreach (‪$storage as $item) {
            $array[] = $item['obj'];
        }
        return $array;
    }
 
    public function ‪getArray()
    {
        return $this->‪toArray();
    }
 
    public function ‪serialize()
    {
        throw new \RuntimeException('An ObjectStorage instance cannot be serialized.', 1267700868);
    }
 
    public function ‪unserialize()
    {
        throw new \RuntimeException('A ObjectStorage instance cannot be unserialized.', 1267700870);
    }
 
    public function ‪_memorizeCleanState()
    {
        $this->isModified = false;
    }
 
    public function ‪_isDirty()
    {
        return ‪$this->isModified;
    }
 
    public function ‪isRelationDirty($object)
    {
        return isset($this->addedObjectsPositions[spl_object_hash($object)])
                && isset($this->removedObjectsPositions[spl_object_hash($object)])
                && ($this->addedObjectsPositions[spl_object_hash($object)] !== $this->removedObjectsPositions[spl_object_hash($object)]);
    }
 
    public function ‪getPosition($object)
    {
        if (!isset($this->addedObjectsPositions[spl_object_hash($object)])) {
            return null;
        }
 
        return $this->addedObjectsPositions[spl_object_hash($object)];
    }
}