vendor/symfony/var-dumper/Cloner/Data.php

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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\VarDumper\Cloner;

use Symfony\Component\VarDumper\Caster\Caster;
use Symfony\Component\VarDumper\Dumper\ContextProvider\SourceContextProvider;

/**
 * @author Nicolas Grekas <p@tchwork.com>
 */
class Data implements \ArrayAccess, \Countable, \IteratorAggregate
{
    private $data;
    private $position = 0;
    private $key = 0;
    private $maxDepth = 20;
    private $maxItemsPerDepth = -1;
    private $useRefHandles = -1;
    private $context = [];

    /**
     * @param array $data An array as returned by ClonerInterface::cloneVar()
     */
    public function __construct(array $data)
    {
        $this->data = $data;
    }

    /**
     * @return string|null The type of the value
     */
    public function getType()
    {
        $item = $this->data[$this->position][$this->key];

        if ($item instanceof Stub && Stub::TYPE_REF === $item->type && !$item->position) {
            $item = $item->value;
        }
        if (!$item instanceof Stub) {
            return \gettype($item);
        }
        if (Stub::TYPE_STRING === $item->type) {
            return 'string';
        }
        if (Stub::TYPE_ARRAY === $item->type) {
            return 'array';
        }
        if (Stub::TYPE_OBJECT === $item->type) {
            return $item->class;
        }
        if (Stub::TYPE_RESOURCE === $item->type) {