1: <?php
 2: namespace Pharborist;
 3: 
 4: /**
 5:  * Any expression enclosed by parentheses, e.g. `(($a && $b) || ($a && $c))`
 6:  */
 7: class ParenthesisNode extends ParentNode implements ExpressionNode {
 8:   use ParenTrait;
 9: 
10:   /**
11:    * @var ExpressionNode
12:    */
13:   protected $expression;
14: 
15:   /**
16:    * @return ExpressionNode
17:    */
18:   public function getExpression() {
19:     return $this->expression;
20:   }
21: }
22: