<?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\Component\DependencyInjection\Compiler;

use Symfony\Component\DependencyInjection\ContainerBuilder;

/**

 * Merges extension configs into the container builder

 *

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

 */

class MergeExtensionConfigurationPass implements CompilerPassInterface

{

    /**

     * {@inheritDoc}

     */

    public function process(ContainerBuilder $container)

    {

        $parameters = $container->getParameterBag()->all();

        $definitions = $container->getDefinitions();

        $aliases = $container->getAliases();

        foreach ($container->getExtensions() as $name => $extension) {

            if (!$config = $container->getExtensionConfig($name)) {

                // this extension was not called

                continue;

            }

            $config = $container->getParameterBag()->resolveValue($config);

            $tmpContainer = new ContainerBuilder($container->getParameterBag());

            $tmpContainer->addObjectResource($extension);

            $extension->load($config, $tmpContainer);

            $container->merge($tmpContainer);

        }

        $container->addDefinitions($definitions);

        $container->addAliases($aliases);

        $container->getParameterBag()->add($parameters);

    }

}