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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  /**
  15   * Represents an edge in your service graph.
  16   *
  17   * Value is typically a reference.
  18   *
  19   * @author Johannes M. Schmitt <schmittjoh@gmail.com>
  20   */
  21  class ServiceReferenceGraphEdge
  22  {
  23      private $sourceNode;
  24      private $destNode;
  25      private $value;
  26  
  27      /**
  28       * @param ServiceReferenceGraphNode $sourceNode
  29       * @param ServiceReferenceGraphNode $destNode
  30       * @param mixed                     $value
  31       */
  32      public function __construct(ServiceReferenceGraphNode $sourceNode, ServiceReferenceGraphNode $destNode, $value = null)
  33      {
  34          $this->sourceNode = $sourceNode;
  35          $this->destNode = $destNode;
  36          $this->value = $value;
  37      }
  38  
  39      /**
  40       * Returns the value of the edge.
  41       *
  42       * @return string
  43       */
  44      public function getValue()
  45      {
  46          return $this->value;
  47      }
  48  
  49      /**
  50       * Returns the source node.
  51       *
  52       * @return ServiceReferenceGraphNode
  53       */
  54      public function getSourceNode()
  55      {
  56          return $this->sourceNode;
  57      }
  58  
  59      /**
  60       * Returns the destination node.
  61       *
  62       * @return ServiceReferenceGraphNode
  63       */
  64      public function getDestNode()
  65      {
  66          return $this->destNode;
  67      }
  68  }