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Profiler.php (2406B)

      1 <?php
      2 
      3 /*
      4  * This file is part of Twig.
      5  *
      6  * (c) 2015 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  * @author Fabien Potencier <fabien@symfony.com>
     14  */
     15 class Twig_Profiler_NodeVisitor_Profiler extends Twig_BaseNodeVisitor
     16 {
     17     private $extensionName;
     18 
     19     public function __construct($extensionName)
     20     {
     21         $this->extensionName = $extensionName;
     22     }
     23 
     24     /**
     25      * {@inheritdoc}
     26      */
     27     protected function doEnterNode(Twig_Node $node, Twig_Environment $env)
     28     {
     29         return $node;
     30     }
     31 
     32     /**
     33      * {@inheritdoc}
     34      */
     35     protected function doLeaveNode(Twig_Node $node, Twig_Environment $env)
     36     {
     37         if ($node instanceof Twig_Node_Module) {
     38             $varName = $this->getVarName();
     39             $node->setNode('display_start', new Twig_Node(array(new Twig_Profiler_Node_EnterProfile($this->extensionName, Twig_Profiler_Profile::TEMPLATE, $node->getAttribute('filename'), $varName), $node->getNode('display_start'))));
     40             $node->setNode('display_end', new Twig_Node(array(new Twig_Profiler_Node_LeaveProfile($varName), $node->getNode('display_end'))));
     41         } elseif ($node instanceof Twig_Node_Block) {
     42             $varName = $this->getVarName();
     43             $node->setNode('body', new Twig_Node_Body(array(
     44                 new Twig_Profiler_Node_EnterProfile($this->extensionName, Twig_Profiler_Profile::BLOCK, $node->getAttribute('name'), $varName),
     45                 $node->getNode('body'),
     46                 new Twig_Profiler_Node_LeaveProfile($varName),
     47             )));
     48         } elseif ($node instanceof Twig_Node_Macro) {
     49             $varName = $this->getVarName();
     50             $node->setNode('body', new Twig_Node_Body(array(
     51                 new Twig_Profiler_Node_EnterProfile($this->extensionName, Twig_Profiler_Profile::MACRO, $node->getAttribute('name'), $varName),
     52                 $node->getNode('body'),
     53                 new Twig_Profiler_Node_LeaveProfile($varName),
     54             )));
     55         }
     56 
     57         return $node;
     58     }
     59 
     60     private function getVarName()
     61     {
     62         return sprintf('__internal_%s', hash('sha256', uniqid(mt_rand(), true), false));
     63     }
     64 
     65     /**
     66      * {@inheritdoc}
     67      */
     68     public function getPriority()
     69     {
     70         return 0;
     71     }
     72 }