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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\HttpKernel\DataCollector;
use Symfony\Component\VarDumper\Caster\CutStub;
use Symfony\Component\VarDumper\Cloner\ClonerInterface;
use Symfony\Component\VarDumper\Cloner\Data;
use Symfony\Component\VarDumper\Cloner\Stub;
use Symfony\Component\VarDumper\Cloner\VarCloner;
/**
* DataCollector.
*
* Children of this class must store the collected data in the data property.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Bernhard Schussek <bschussek@symfony.com>
*/
abstract class DataCollector implements DataCollectorInterface, \Serializable
{
protected $data = [];
/**
* @var ClonerInterface
*/
private $cloner;
/**
* @internal
*/
public function serialize()
{
$trace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2);
$isCalledFromOverridingMethod = isset($trace[1]['function'], $trace[1]['object']) && 'serialize' === $trace[1]['function'] && $this === $trace[1]['object'];
return $isCalledFromOverridingMethod ? $this->data : serialize($this->data);
}
/**
* @internal
*/
public function unserialize($data)
{
$this->data = \is_array($data) ? $data : unserialize($data);
}
/**
* Converts the variable into a serializable Data instance.
*
* This array can be displayed in the template using
* the VarDumper component.
*
* @param mixed $var
*
* @return Data
*/
protected function cloneVar($var)
{
if ($var instanceof Data) {
return $var;
}
if (null === $this->cloner) {
if (!class_exists(CutStub::class)) {
throw new \LogicException(sprintf('The VarDumper component is needed for the %s() method. Install symfony/var-dumper version 3.4 or above.', __METHOD__));
}
$this->cloner = new VarCloner();
$this->cloner->setMaxItems(-1);
$this->cloner->addCasters($this->getCasters());
}
return $this->cloner->cloneVar($var);
}
/**
* @return callable[] The casters to add to the cloner
*/
protected function getCasters()
{
return [
'*' => function ($v, array $a, Stub $s, $isNested) {
if (!$v instanceof Stub) {
foreach ($a as $k => $v) {
if (\is_object($v) && !$v instanceof \DateTimeInterface && !$v instanceof Stub) {
$a[$k] = new CutStub($v);
}
}
}
return $a;
},
];
}
}
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