DebugViewHelper.php

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<?php
namespace TYPO3\CMS\Fluid\ViewHelpers;

/*                                                                        *
 * This script is part of the TYPO3 project - inspiring people to share!  *
 *                                                                        *
 * TYPO3 is free software; you can redistribute it and/or modify it under *
 * the terms of the GNU General Public License version 2 as published by  *
 * the Free Software Foundation.                                          *
 *                                                                        *
 * This script is distributed in the hope that it will be useful, but     *
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN-    *
 * TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General      *
 * Public License for more details.                                       *
 *                                                                        */

use TYPO3\CMS\Extbase\Utility\DebuggerUtility;
use TYPO3\CMS\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3\CMS\Fluid\Core\ViewHelper\Facets\CompilableInterface;

class DebugViewHelper extends AbstractViewHelper implements CompilableInterface
{
    public function render($title = null, $maxDepth = 8, $plainText = false, $ansiColors = false, $inline = false, $blacklistedClassNames = null, $blacklistedPropertyNames = null)
    {
        return static::renderStatic(
            [
                'title' => $title,
                'maxDepth' => $maxDepth,
                'plainText' => $plainText,
                'ansiColors' => $ansiColors,
                'inline' => $inline,
                'blacklistedClassNames' => $blacklistedClassNames,
                'blacklistedPropertyNames' => $blacklistedPropertyNames
            ],
            $this->buildRenderChildrenClosure(),
            $this->renderingContext
        );
    }

    public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
    {
        return DebuggerUtility::var_dump($renderChildrenClosure(), $arguments['title'], $arguments['maxDepth'], (bool)$arguments['plainText'], (bool)$arguments['ansiColors'], (bool)$arguments['inline'], $arguments['blacklistedClassNames'], $arguments['blacklistedPropertyNames']);
    }
}