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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\Definition;
  15  use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
  16  use Symfony\Component\DependencyInjection\ContainerInterface;
  17  use Symfony\Component\DependencyInjection\Reference;
  18  use Symfony\Component\DependencyInjection\ContainerBuilder;
  19  
  20  /**
  21   * Checks that all references are pointing to a valid service.
  22   *
  23   * @author Johannes M. Schmitt <schmittjoh@gmail.com>
  24   */
  25  class CheckExceptionOnInvalidReferenceBehaviorPass implements CompilerPassInterface
  26  {
  27      private $container;
  28      private $sourceId;
  29  
  30      public function process(ContainerBuilder $container)
  31      {
  32          $this->container = $container;
  33  
  34          foreach ($container->getDefinitions() as $id => $definition) {
  35              $this->sourceId = $id;
  36              $this->processDefinition($definition);
  37          }
  38      }
  39  
  40      private function processDefinition(Definition $definition)
  41      {
  42          $this->processReferences($definition->getArguments());
  43          $this->processReferences($definition->getMethodCalls());
  44          $this->processReferences($definition->getProperties());
  45      }
  46  
  47      private function processReferences(array $arguments)
  48      {
  49          foreach ($arguments as $argument) {
  50              if (is_array($argument)) {
  51                  $this->processReferences($argument);
  52              } elseif ($argument instanceof Definition) {
  53                  $this->processDefinition($argument);
  54              } elseif ($argument instanceof Reference && ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE === $argument->getInvalidBehavior()) {
  55                  $destId = (string) $argument;
  56  
  57                  if (!$this->container->has($destId)) {
  58                      throw new ServiceNotFoundException($destId, $this->sourceId);
  59                  }
  60              }
  61          }
  62      }
  63  }