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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;
  13  
  14  /**
  15   * Reference represents a service reference.
  16   *
  17   * @author Fabien Potencier <fabien@symfony.com>
  18   */
  19  class Reference
  20  {
  21      private $id;
  22      private $invalidBehavior;
  23      private $strict;
  24  
  25      /**
  26       * @param string $id              The service identifier
  27       * @param int    $invalidBehavior The behavior when the service does not exist
  28       * @param bool   $strict          Sets how this reference is validated
  29       *
  30       * @see Container
  31       */
  32      public function __construct($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, $strict = true)
  33      {
  34          $this->id = strtolower($id);
  35          $this->invalidBehavior = $invalidBehavior;
  36          $this->strict = $strict;
  37      }
  38  
  39      /**
  40       * @return string The service identifier
  41       */
  42      public function __toString()
  43      {
  44          return (string) $this->id;
  45      }
  46  
  47      /**
  48       * Returns the behavior to be used when the service does not exist.
  49       *
  50       * @return int
  51       */
  52      public function getInvalidBehavior()
  53      {
  54          return $this->invalidBehavior;
  55      }
  56  
  57      /**
  58       * Returns true when this Reference is strict.
  59       *
  60       * @return bool
  61       */
  62      public function isStrict()
  63      {
  64          return $this->strict;
  65      }
  66  }