* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Config\Definition; use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException; /** * Node which only allows a finite set of values. * * @author Johannes M. Schmitt */ class EnumNode extends ScalarNode { private $values; public function __construct($name, NodeInterface $parent = null, array $values = array()) { $values = array_unique($values); if (count($values) <= 1) { throw new \InvalidArgumentException('$values must contain at least two distinct elements.'); } parent::__construct($name, $parent); $this->values = $values; } public function getValues() { return $this->values; } protected function finalizeValue($value) { $value = parent::finalizeValue($value); if (!in_array($value, $this->values, true)) { $ex = new InvalidConfigurationException(sprintf( 'The value %s is not allowed for path "%s". Permissible values: %s', json_encode($value), $this->getPath(), implode(', ', array_map('json_encode', $this->values)))); $ex->setPath($this->getPath()); throw $ex; } return $value; } }