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//opt/alt/php54/usr/share/pear/Symfony/Bridge/Twig/Form/TwigRenderer.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Bridge\Twig\Form;

use Symfony\Component\Form\Exception\UnexpectedTypeException;
use Symfony\Component\Form\Extension\Csrf\CsrfProvider\CsrfProviderAdapter;
use Symfony\Component\Form\Extension\Csrf\CsrfProvider\CsrfProviderInterface;
use Symfony\Component\Form\FormRenderer;
use Symfony\Component\Security\Csrf\CsrfTokenManagerInterface;

/**
 * @author Bernhard Schussek <bschussek@gmail.com>
 */
class TwigRenderer extends FormRenderer implements TwigRendererInterface
{
    /**
     * @var TwigRendererEngineInterface
     */
    private $engine;

public function __construct(TwigRendererEngineInterface $engine, $csrfTokenManager = null)
    {
        if ($csrfTokenManager instanceof CsrfProviderInterface) {
            $csrfTokenManager = new CsrfProviderAdapter($csrfTokenManager);
        } elseif (null !== $csrfTokenManager && !$csrfTokenManager instanceof CsrfTokenManagerInterface) {
            throw new UnexpectedTypeException($csrfTokenManager, 'CsrfProviderInterface or CsrfTokenManagerInterface');
        }

parent::__construct($engine, $csrfTokenManager);

$this->engine = $engine;
    }

/**
     * {@inheritdoc}
     */
    public function setEnvironment(\Twig_Environment $environment)
    {
        $this->engine->setEnvironment($environment);
    }
}