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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\Loader\Configurator\Traits;
  13  
  14  use Symfony\Component\DependencyInjection\ChildDefinition;
  15  use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
  16  
  17  /**
  18   * @method $this parent(string $parent)
  19   */
  20  trait ParentTrait
  21  {
  22      /**
  23       * Sets the Definition to inherit from.
  24       *
  25       * @param string $parent
  26       *
  27       * @return $this
  28       *
  29       * @throws InvalidArgumentException when parent cannot be set
  30       */
  31      final protected function setParent($parent)
  32      {
  33          if (!$this->allowParent) {
  34              throw new InvalidArgumentException(sprintf('A parent cannot be defined when either "_instanceof" or "_defaults" are also defined for service prototype "%s".', $this->id));
  35          }
  36  
  37          if ($this->definition instanceof ChildDefinition) {
  38              $this->definition->setParent($parent);
  39          } elseif ($this->definition->isAutoconfigured()) {
  40              throw new InvalidArgumentException(sprintf('The service "%s" cannot have a "parent" and also have "autoconfigure". Try disabling autoconfiguration for the service.', $this->id));
  41          } elseif ($this->definition->getBindings()) {
  42              throw new InvalidArgumentException(sprintf('The service "%s" cannot have a "parent" and also "bind" arguments.', $this->id));
  43          } else {
  44              // cast Definition to ChildDefinition
  45              $definition = serialize($this->definition);
  46              $definition = substr_replace($definition, '53', 2, 2);
  47              $definition = substr_replace($definition, 'Child', 44, 0);
  48              $definition = unserialize($definition);
  49  
  50              $this->definition = $definition->setParent($parent);
  51          }
  52  
  53          return $this;
  54      }
  55  }