74 lines
2.1 KiB
PHP
74 lines
2.1 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Form;
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use Symfony\Component\Form\Exception\UnexpectedTypeException;
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use Symfony\Component\Form\Exception\TransformationFailedException;
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class CallbackTransformer implements DataTransformerInterface
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{
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/**
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* The callback used for forward transform
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* @var \Closure
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*/
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private $transform;
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/**
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* The callback used for reverse transform
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* @var \Closure
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*/
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private $reverseTransform;
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/**
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* Constructor.
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*
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* @param \Closure $transform The forward transform callback
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* @param \Closure $reverseTransform The reverse transform callback
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*/
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public function __construct(\Closure $transform, \Closure $reverseTransform)
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{
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$this->transform = $transform;
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$this->reverseTransform = $reverseTransform;
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}
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/**
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* Transforms a value from the original representation to a transformed representation.
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*
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* @param mixed $data The value in the original representation
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*
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* @return mixed The value in the transformed representation
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*
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* @throws UnexpectedTypeException when the argument is not a string
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* @throws TransformationFailedException when the transformation fails
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*/
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public function transform($data)
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{
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return call_user_func($this->transform, $data);
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}
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/**
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* Transforms a value from the transformed representation to its original
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* representation.
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*
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* @param mixed $data The value in the transformed representation
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*
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* @return mixed The value in the original representation
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*
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* @throws UnexpectedTypeException when the argument is not of the expected type
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* @throws TransformationFailedException when the transformation fails
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*/
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public function reverseTransform($data)
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{
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return call_user_func($this->reverseTransform, $data);
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}
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}
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