File config/Symfony/Component/Config/Definition/Builder/EnumNodeDefinition.php

 1: <?php
 2: 
 3: namespace Symfony\Component\Config\Definition\Builder;
 4: 
 5: use Symfony\Component\Config\Definition\EnumNode;
 6: use Symfony\Component\Config\Definition\Builder\ScalarNodeDefinition;
 7: 
 8: /**
 9:  * Enum Node Definition.
10:  *
11:  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
12:  */
13: class EnumNodeDefinition extends ScalarNodeDefinition
14: {
15:     private $values;
16: 
17:     public function values(array $values)
18:     {
19:         $values = array_unique($values);
20: 
21:         if (count($values) <= 1) {
22:             throw new \InvalidArgumentException('->values() must be called with at least two distinct values.');
23:         }
24: 
25:         $this->values = $values;
26: 
27:         return $this;
28:     }
29: 
30:     /**
31:      * Instantiate a Node
32:      *
33:      * @return EnumNode The node
34:      *
35:      * @throws \RuntimeException
36:      */
37:     protected function instantiateNode()
38:     {
39:         if (null === $this->values) {
40:             throw new \RuntimeException('You must call ->values() on enum nodes.');
41:         }
42: 
43:         return new EnumNode($this->name, $this->parent, $this->values);
44:     }
45: }
46:
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