AddClassesToCachePass.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\Component\HttpKernel\DependencyInjection;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;
use Symfony\Component\HttpKernel\Kernel;

/**
 * Sets the classes to compile in the cache for the container.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class AddClassesToCachePass implements CompilerPassInterface {
  private $kernel;
  public function __construct(Kernel $kernel) {
    $this->kernel = $kernel;
  }

  /**
   * {@inheritDoc}
   */
  public function process(ContainerBuilder $container) {
    $classes = array();
    foreach ($container
      ->getExtensions() as $extension) {
      if ($extension instanceof Extension) {
        $classes = array_merge($classes, $extension
          ->getClassesToCompile());
      }
    }
    $this->kernel
      ->setClassCache(array_unique($container
      ->getParameterBag()
      ->resolveValue($classes)));
  }

}