1: <?php
 2: namespace Pharborist\Operators;
 3: 
 4: use Pharborist\ExpressionNode;
 5: use Pharborist\ParentNode;
 6: use Pharborist\TokenNode;
 7: 
 8: 
 9: /**
10:  * An unary operation.
11:  */
12: abstract class UnaryOperationNode extends ParentNode implements ExpressionNode {
13:   /**
14:    * @var TokenNode
15:    */
16:   protected $operator;
17: 
18:   /**
19:    * @var ExpressionNode
20:    */
21:   protected $operand;
22: 
23:   /**
24:    * @return TokenNode
25:    */
26:   public function getOperator() {
27:     return $this->operator;
28:   }
29: 
30:   /**
31:    * @return ExpressionNode
32:    */
33:   public function getOperand() {
34:     return $this->operand;
35:   }
36: 
37:   /**
38:    * @param ExpressionNode $operand
39:    * @return $this
40:    */
41:   public function setOperand(ExpressionNode $operand) {
42:     /** @var \Pharborist\Node $operand */
43:     $this->operand->replaceWith($operand);
44:     return $this;
45:   }
46: }
47: