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Edit File: DataCollector.php
<?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\HttpKernel\DataCollector\Util\ValueExporter; 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 { /** * @var array|Data */ protected $data = []; /** * @var ValueExporter */ private $valueExporter; /** * @var ClonerInterface */ private $cloner; 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); } 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)) { $this->cloner = new VarCloner(); $this->cloner->setMaxItems(-1); $this->cloner->addCasters($this->getCasters()); } else { @trigger_error(sprintf('Using the %s() method without the VarDumper component is deprecated since Symfony 3.2 and won\'t be supported in 4.0. Install symfony/var-dumper version 3.2 or above.', __METHOD__), \E_USER_DEPRECATED); $this->cloner = false; } } if (false === $this->cloner) { if (null === $this->valueExporter) { $this->valueExporter = new ValueExporter(); } return $this->valueExporter->exportValue($var); } return $this->cloner->cloneVar($var); } /** * Converts a PHP variable to a string. * * @param mixed $var A PHP variable * * @return string The string representation of the variable * * @deprecated since version 3.2, to be removed in 4.0. Use cloneVar() instead. */ protected function varToString($var) { @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.2 and will be removed in 4.0. Use cloneVar() instead.', __METHOD__), \E_USER_DEPRECATED); if (null === $this->valueExporter) { $this->valueExporter = new ValueExporter(); } return $this->valueExporter->exportValue($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; }, ]; } }