vendor/symfony/config/Definition/Builder/BooleanNodeDefinition.php

   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\Builder;
  13
  14 use Symfony\Component\Config\Definition\BooleanNode;
  15
  16 /**
  17  * This class provides a fluent interface for defining a node.
  18  *
  19  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
  20  */
  21 class BooleanNodeDefinition extends ScalarNodeDefinition
  22 {
  23     /**
  24      * {@inheritdoc}
  25      */
  26     public function __construct($name, NodeParentInterface $parent = null)
  27     {
  28         parent::__construct($name, $parent);
  29
  30         $this->nullEquivalent = true;
  31     }
  32
  33     /**
  34      * {@inheritdoc}
  35      *
  36      * @deprecated Deprecated since version 2.8, to be removed in 3.0.
  37      */
  38     public function cannotBeEmpty()
  39     {
  40         @trigger_error('The '.__METHOD__.' method is deprecated since Symfony 2.8 and will be removed in 3.0.', E_USER_DEPRECATED);
  41
  42         return parent::cannotBeEmpty();
  43     }
  44
  45     /**
  46      * Instantiate a Node.
  47      *
  48      * @return BooleanNode The node
  49      */
  50     protected function instantiateNode()
  51     {
  52         return new BooleanNode($this->name, $this->parent);
  53     }
  54 }