SandboxNode.php

<?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\Node;

use Twig\Attribute\YieldReady;
use Twig\Compiler;

/**
 * Represents a sandbox node.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SandboxNode extends Node {
    public function __construct(Node $body, int $lineno) {
        parent::__construct([
            'body' => $body,
        ], [], $lineno);
    }
    public function compile(Compiler $compiler) : void {
        $compiler->addDebugInfo($this)
            ->write("if (!\$alreadySandboxed = \$this->sandbox->isSandboxed()) {\n")
            ->indent()
            ->write("\$this->sandbox->enableSandbox();\n")
            ->outdent()
            ->write("}\n")
            ->write("try {\n")
            ->indent()
            ->subcompile($this->getNode('body'))
            ->outdent()
            ->write("} finally {\n")
            ->indent()
            ->write("if (!\$alreadySandboxed) {\n")
            ->indent()
            ->write("\$this->sandbox->disableSandbox();\n")
            ->outdent()
            ->write("}\n")
            ->outdent()
            ->write("}\n");
    }

}