vendor/twig/twig/src/NodeVisitor/SafeAnalysisNodeVisitor.php

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<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\NodeVisitor;

use Twig\Environment;
use Twig\Node\Expression\BlockReferenceExpression;
use Twig\Node\Expression\ConditionalExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\FilterExpression;
use Twig\Node\Expression\FunctionExpression;
use Twig\Node\Expression\GetAttrExpression;
use Twig\Node\Expression\MethodCallExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\Expression\ParentExpression;
use Twig\Node\Node;

final class SafeAnalysisNodeVisitor extends AbstractNodeVisitor
{
    private $data = [];
    private $safeVars = [];

    public function setSafeVars($safeVars)
    {
        $this->safeVars = $safeVars;
    }

    public function getSafe(Node $node)
    {
        $hash = spl_object_hash($node);
        if (!isset($this->data[$hash])) {
            return;
        }

        foreach ($this->data[$hash] as $bucket) {
            if ($bucket['key'] !== $node) {
                continue;
            }

            if (\in_array('html_attr', $bucket['value'])) {
                $bucket['value'][] = 'html';
            }

            return $bucket['value'];
        }
    }

    private function setSafe(Node $node, array $safe)
    {
        $hash = spl_object_hash($node);
        if (isset($this->data[$hash])) {
            foreach ($this->data[$hash] as &$bucket) {