1: <?php
 2: namespace Pharborist\Variables;
 3: 
 4: use Pharborist\ExpressionNode;
 5: use Pharborist\Functions\LexicalVariableNode;
 6: use Pharborist\ParentNode;
 7: 
 8: /**
 9:  * A reference variable.
10:  *
11:  * For example, &$a
12:  */
13: class ReferenceVariableNode extends ParentNode implements ExpressionNode, LexicalVariableNode {
14:   /**
15:    * @var VariableNode
16:    */
17:   protected $variable;
18: 
19:   /**
20:    * @return VariableNode
21:    */
22:   public function getVariable() {
23:     return $this->variable;
24:   }
25: }
26: