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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\DependencyInjection\Compiler;
  13  
  14  use Symfony\Component\DependencyInjection\ContainerBuilder;
  15  
  16  /**
  17   * Remove private aliases from the container. They were only used to establish
  18   * dependencies between services, and these dependencies have been resolved in
  19   * one of the previous passes.
  20   *
  21   * @author Johannes M. Schmitt <schmittjoh@gmail.com>
  22   */
  23  class RemovePrivateAliasesPass implements CompilerPassInterface
  24  {
  25      /**
  26       * Removes private aliases from the ContainerBuilder.
  27       *
  28       * @param ContainerBuilder $container
  29       */
  30      public function process(ContainerBuilder $container)
  31      {
  32          $compiler = $container->getCompiler();
  33          $formatter = $compiler->getLoggingFormatter();
  34  
  35          foreach ($container->getAliases() as $id => $alias) {
  36              if ($alias->isPublic()) {
  37                  continue;
  38              }
  39  
  40              $container->removeAlias($id);
  41              $compiler->addLogMessage($formatter->formatRemoveService($this, $id, 'private alias'));
  42          }
  43      }
  44  }