1 <?php

     2 

     3 /*

     4  * This file is part of Twig.

     5  *

     6  * (c) 2010 Fabien Potencier

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 

    12 /**

    13  * Twig_Node_SandboxedPrint adds a check for the __toString() method

    14  * when the variable is an object and the sandbox is activated.

    15  *

    16  * When there is a simple Print statement, like {{ article }},

    17  * and if the sandbox is enabled, we need to check that the __toString()

    18  * method is allowed if 'article' is an object.

    19  *

    20  * @package    twig

    21  * @author     Fabien Potencier <fabien@symfony.com>

    22  */

    23 class Twig_Node_SandboxedPrint extends Twig_Node_Print

    24 {

    25     public function __construct(Twig_Node_Expression $expr, $lineno, $tag = null)

    26     {

    27         parent::__construct($expr, $lineno, $tag);

    28     }

    29 

    30     /**

    31      * Compiles the node to PHP.

    32      *

    33      * @param Twig_Compiler A Twig_Compiler instance

    34      */

    35     public function compile(Twig_Compiler $compiler)

    36     {

    37         $compiler

    38             ->addDebugInfo($this)

    39             ->write('echo $this->env->getExtension(\'sandbox\')->ensureToStringAllowed(')

    40             ->subcompile($this->getNode('expr'))

    41             ->raw(");\n")

    42         ;

    43     }

    44 

    45     /**

    46      * Removes node filters.

    47      *

    48      * This is mostly needed when another visitor adds filters (like the escaper one).

    49      *

    50      * @param Twig_Node $node A Node

    51      */

    52     protected function removeNodeFilter($node)

    53     {

    54         if ($node instanceof Twig_Node_Expression_Filter) {

    55             return $this->removeNodeFilter($node->getNode('node'));

    56         }

    57 

    58         return $node;

    59     }

    60 }