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<?php

/*
 * This file is part of Twig.
 *
 * (c) 2015 Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

class Twig_Extension_Profiler extends Twig_Extension
{
    private $actives;

public function __construct(Twig_Profiler_Profile $profile)
    {
        $this->actives = array($profile);
    }

public function enter(Twig_Profiler_Profile $profile)
    {
        $this->actives[0]->addProfile($profile);
        array_unshift($this->actives, $profile);
    }

public function leave(Twig_Profiler_Profile $profile)
    {
        $profile->leave();
        array_shift($this->actives);

if (1 === count($this->actives)) {
            $this->actives[0]->leave();
        }
    }

/**
     * {@inheritdoc}
     */
    public function getNodeVisitors()
    {
        return array(new Twig_Profiler_NodeVisitor_Profiler($this->getName()));
    }

/**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'profiler';
    }
}