[Summary view] [Print] [Text view]

   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\Config\Definition;
  13  
  14  use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
  15  
  16  /**
  17   * Node which only allows a finite set of values.
  18   *
  19   * @author Johannes M. Schmitt <schmittjoh@gmail.com>
  20   */
  21  class EnumNode extends ScalarNode
  22  {
  23      private $values;
  24  
  25      public function __construct($name, NodeInterface $parent = null, array $values = array())
  26      {
  27          $values = array_unique($values);
  28          if (empty($values)) {
  29              throw new \InvalidArgumentException('$values must contain at least one element.');
  30          }
  31  
  32          parent::__construct($name, $parent);
  33          $this->values = $values;
  34      }
  35  
  36      public function getValues()
  37      {
  38          return $this->values;
  39      }
  40  
  41      protected function finalizeValue($value)
  42      {
  43          $value = parent::finalizeValue($value);
  44  
  45          if (!\in_array($value, $this->values, true)) {
  46              $ex = new InvalidConfigurationException(sprintf('The value %s is not allowed for path "%s". Permissible values: %s', json_encode($value), $this->getPath(), implode(', ', array_map('json_encode', $this->values))));
  47              $ex->setPath($this->getPath());
  48  
  49              throw $ex;
  50          }
  51  
  52          return $value;
  53      }
  54  }