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 /**

    15  * This class builds validation conditions.

    16  *

    17  * @author Christophe Coevoet <stof@notk.org>

    18  */

    19 class ValidationBuilder

    20 {

    21     protected $node;

    22     public $rules;

    23 

    24     /**

    25      * Constructor

    26      *

    27      * @param NodeDefinition $node The related node

    28      */

    29     public function __construct(NodeDefinition $node)

    30     {

    31         $this->node = $node;

    32 

    33         $this->rules = array();

    34     }

    35 

    36     /**

    37      * Registers a closure to run as normalization or an expression builder to build it if null is provided.

    38      *

    39      * @param \Closure $closure

    40      *

    41      * @return ExprBuilder|ValidationBuilder

    42      */

    43     public function rule(\Closure $closure = null)

    44     {

    45         if (null !== $closure) {

    46             $this->rules[] = $closure;

    47 

    48             return $this;

    49         }

    50 

    51         return $this->rules[] = new ExprBuilder($this->node);

    52     }

    53 }