vendor/symfony/form/Symfony/Component/Form/CallbackTransformer.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\Form;
  13
  14 class CallbackTransformer implements DataTransformerInterface
  15 {
  16     /**
  17      * The callback used for forward transform
  18      * @var \Closure
  19      */
  20     private $transform;
  21
  22     /**
  23      * The callback used for reverse transform
  24      * @var \Closure
  25      */
  26     private $reverseTransform;
  27
  28     /**
  29      * Constructor.
  30      *
  31      * @param \Closure $transform        The forward transform callback
  32      * @param \Closure $reverseTransform The reverse transform callback
  33      */
  34     public function __construct(\Closure $transform, \Closure $reverseTransform)
  35     {
  36         $this->transform = $transform;
  37         $this->reverseTransform = $reverseTransform;
  38     }
  39
  40     /**
  41      * Transforms a value from the original representation to a transformed representation.
  42      *
  43      * @param mixed $data The value in the original representation
  44      *
  45      * @return mixed The value in the transformed representation
  46      *
  47      * @throws UnexpectedTypeException   when the argument is not a string
  48      * @throws TransformationFailedException  when the transformation fails
  49      */
  50     public function transform($data)
  51     {
  52         return call_user_func($this->transform, $data);
  53     }
  54
  55     /**
  56      * Transforms a value from the transformed representation to its original
  57      * representation.
  58      *
  59      * @param mixed $data The value in the transformed representation
  60      *
  61      * @return mixed The value in the original representation
  62      *
  63      * @throws UnexpectedTypeException   when the argument is not of the expected type
  64      * @throws TransformationFailedException  when the transformation fails
  65      */
  66     public function reverseTransform($data)
  67     {
  68         return call_user_func($this->reverseTransform, $data);
  69     }
  70 }