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: use Symfony\Component\DependencyInjection\Definition;
Chris@0: use Symfony\Component\DependencyInjection\Alias;
Chris@0: 
Chris@0: /**
Chris@0:  * Represents a node in your service graph.
Chris@0:  *
Chris@0:  * Value is typically a definition, or an alias.
Chris@0:  *
Chris@0:  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
Chris@0:  */
Chris@0: class ServiceReferenceGraphNode
Chris@0: {
Chris@0:     private $id;
Chris@0:     private $inEdges = array();
Chris@0:     private $outEdges = array();
Chris@0:     private $value;
Chris@0: 
Chris@0:     /**
Chris@0:      * @param string $id    The node identifier
Chris@0:      * @param mixed  $value The node value
Chris@0:      */
Chris@0:     public function __construct($id, $value)
Chris@0:     {
Chris@0:         $this->id = $id;
Chris@0:         $this->value = $value;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Adds an in edge to this node.
Chris@0:      *
Chris@0:      * @param ServiceReferenceGraphEdge $edge
Chris@0:      */
Chris@0:     public function addInEdge(ServiceReferenceGraphEdge $edge)
Chris@0:     {
Chris@0:         $this->inEdges[] = $edge;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Adds an out edge to this node.
Chris@0:      *
Chris@0:      * @param ServiceReferenceGraphEdge $edge
Chris@0:      */
Chris@0:     public function addOutEdge(ServiceReferenceGraphEdge $edge)
Chris@0:     {
Chris@0:         $this->outEdges[] = $edge;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Checks if the value of this node is an Alias.
Chris@0:      *
Chris@0:      * @return bool True if the value is an Alias instance
Chris@0:      */
Chris@0:     public function isAlias()
Chris@0:     {
Chris@0:         return $this->value instanceof Alias;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Checks if the value of this node is a Definition.
Chris@0:      *
Chris@0:      * @return bool True if the value is a Definition instance
Chris@0:      */
Chris@0:     public function isDefinition()
Chris@0:     {
Chris@0:         return $this->value instanceof Definition;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns the identifier.
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getId()
Chris@0:     {
Chris@0:         return $this->id;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns the in edges.
Chris@0:      *
Chris@0:      * @return array The in ServiceReferenceGraphEdge array
Chris@0:      */
Chris@0:     public function getInEdges()
Chris@0:     {
Chris@0:         return $this->inEdges;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns the out edges.
Chris@0:      *
Chris@0:      * @return array The out ServiceReferenceGraphEdge array
Chris@0:      */
Chris@0:     public function getOutEdges()
Chris@0:     {
Chris@0:         return $this->outEdges;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns the value of this Node.
Chris@0:      *
Chris@0:      * @return mixed The value
Chris@0:      */
Chris@0:     public function getValue()
Chris@0:     {
Chris@0:         return $this->value;
Chris@0:     }
Chris@0: }