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      * Instantiate a Node

    35      *

    36      * @return BooleanNode The node

    37      */

    38     protected function instantiateNode()

    39     {

    40         return new BooleanNode($this->name, $this->parent);

    41     }

    42 

    43 }