Файл: symfony-2.7/src/Symfony/Component/Form/CallbackTransformer.php
Строк: 133
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SymfonyComponentForm;
use SymfonyComponentFormExceptionUnexpectedTypeException;
use SymfonyComponentFormExceptionTransformationFailedException;
class CallbackTransformer implements DataTransformerInterface
{
/**
* The callback used for forward transform.
*
* @var callable
*/
private $transform;
/**
* The callback used for reverse transform.
*
* @var callable
*/
private $reverseTransform;
/**
* Constructor.
*
* @param callable $transform The forward transform callback
* @param callable $reverseTransform The reverse transform callback
*
* @throws InvalidArgumentException when the given callbacks is invalid
*/
public function __construct($transform, $reverseTransform)
{
if (!is_callable($transform)) {
throw new InvalidArgumentException('Argument 1 should be a callable');
}
if (!is_callable($reverseTransform)) {
throw new InvalidArgumentException('Argument 2 should be a callable');
}
$this->transform = $transform;
$this->reverseTransform = $reverseTransform;
}
/**
* Transforms a value from the original representation to a transformed representation.
*
* @param mixed $data The value in the original representation
*
* @return mixed The value in the transformed representation
*
* @throws UnexpectedTypeException when the argument is not of the expected type
* @throws TransformationFailedException when the transformation fails
*/
public function transform($data)
{
return call_user_func($this->transform, $data);
}
/**
* Transforms a value from the transformed representation to its original
* representation.
*
* @param mixed $data The value in the transformed representation
*
* @return mixed The value in the original representation
*
* @throws UnexpectedTypeException when the argument is not of the expected type
* @throws TransformationFailedException when the transformation fails
*/
public function reverseTransform($data)
{
return call_user_func($this->reverseTransform, $data);
}
}