<?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\Bundle\TwigBundle\DependencyInjection\Compiler;

use Symfony\Component\DependencyInjection\Reference;

use Symfony\Component\DependencyInjection\ContainerBuilder;

use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;

/**

 * Adds tagged twig.extension services to twig service

 *

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

 */

class TwigEnvironmentPass implements CompilerPassInterface

{

    public function process(ContainerBuilder $container)

    {

        if (false === $container->hasDefinition('twig')) {

            return;

        }

        $definition = $container->getDefinition('twig');

        // Extensions must always be registered before everything else.

        // For instance, global variable definitions must be registered

        // afterward. If not, the globals from the extensions will never

        // be registered.

        $calls = $definition->getMethodCalls();

        $definition->setMethodCalls(array());

        foreach ($container->findTaggedServiceIds('twig.extension') as $id => $attributes) {

            $definition->addMethodCall('addExtension', array(new Reference($id)));

        }

        $definition->setMethodCalls(array_merge($definition->getMethodCalls(), $calls));

    }

}