MergeExtensionConfigurationPass.php

1. 9.x drupal/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/DependencyInjection/MergeExtensionConfigurationPass.php
2. 9.x drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.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\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);
  }

}