<?php

namespace Symfony\Component\Form;

use Symfony\Component\Form\Exception\TransformationFailedException;

/**
 * @template T
 * @template R
 */
interface DataTransformerInterface
{
    /**
     * @psalm-param ?T $value The value in the original representation
     *
     * @psalm-return ?R The value in the transformed representation
     */
    public function transform($value);

    /**
     * @psalm-param ?R $value The value in the transformed representation
     *
     * @psalm-return ?T The value in the original representation
     */
    public function reverseTransform($value);
}