Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\DependencyInjection\Compiler;
Chris@0: 
Chris@0: /**
Chris@0:  * Represents an edge in your service graph.
Chris@0:  *
Chris@0:  * Value is typically a reference.
Chris@0:  *
Chris@0:  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
Chris@0:  */
Chris@0: class ServiceReferenceGraphEdge
Chris@0: {
Chris@0:     private $sourceNode;
Chris@0:     private $destNode;
Chris@0:     private $value;
Chris@14:     private $lazy;
Chris@14:     private $weak;
Chris@17:     private $byConstructor;
Chris@0: 
Chris@0:     /**
Chris@0:      * @param ServiceReferenceGraphNode $sourceNode
Chris@0:      * @param ServiceReferenceGraphNode $destNode
Chris@14:      * @param mixed                     $value
Chris@14:      * @param bool                      $lazy
Chris@14:      * @param bool                      $weak
Chris@17:      * @param bool                      $byConstructor
Chris@0:      */
Chris@17:     public function __construct(ServiceReferenceGraphNode $sourceNode, ServiceReferenceGraphNode $destNode, $value = null, $lazy = false, $weak = false, $byConstructor = false)
Chris@0:     {
Chris@0:         $this->sourceNode = $sourceNode;
Chris@0:         $this->destNode = $destNode;
Chris@0:         $this->value = $value;
Chris@14:         $this->lazy = $lazy;
Chris@14:         $this->weak = $weak;
Chris@17:         $this->byConstructor = $byConstructor;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns the value of the edge.
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getValue()
Chris@0:     {
Chris@0:         return $this->value;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns the source node.
Chris@0:      *
Chris@0:      * @return ServiceReferenceGraphNode
Chris@0:      */
Chris@0:     public function getSourceNode()
Chris@0:     {
Chris@0:         return $this->sourceNode;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns the destination node.
Chris@0:      *
Chris@0:      * @return ServiceReferenceGraphNode
Chris@0:      */
Chris@0:     public function getDestNode()
Chris@0:     {
Chris@0:         return $this->destNode;
Chris@0:     }
Chris@14: 
Chris@14:     /**
Chris@14:      * Returns true if the edge is lazy, meaning it's a dependency not requiring direct instantiation.
Chris@14:      *
Chris@14:      * @return bool
Chris@14:      */
Chris@14:     public function isLazy()
Chris@14:     {
Chris@14:         return $this->lazy;
Chris@14:     }
Chris@14: 
Chris@14:     /**
Chris@14:      * Returns true if the edge is weak, meaning it shouldn't prevent removing the target service.
Chris@14:      *
Chris@14:      * @return bool
Chris@14:      */
Chris@14:     public function isWeak()
Chris@14:     {
Chris@14:         return $this->weak;
Chris@14:     }
Chris@17: 
Chris@17:     /**
Chris@17:      * Returns true if the edge links with a constructor argument.
Chris@17:      *
Chris@17:      * @return bool
Chris@17:      */
Chris@17:     public function isReferencedByConstructor()
Chris@17:     {
Chris@17:         return $this->byConstructor;
Chris@17:     }
Chris@0: }