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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Form\ChoiceList\Loader;

/**
 * Callback choice loader optimized for Intl choice types.
 *
 * @author Jules Pietri <[email protected]>
 * @author Yonel Ceruto <[email protected]>
 */
class IntlCallbackChoiceLoader extends CallbackChoiceLoader
{
    /**
     * {@inheritdoc}
     */
    public function loadChoicesForValues(array $values, ?callable $value = null)
    {
        return parent::loadChoicesForValues(array_filter($values), $value);
    }

    /**
     * {@inheritdoc}
     */
    public function loadValuesForChoices(array $choices, ?callable $value = null)
    {
        $choices = array_filter($choices);

        // If no callable is set, choices are the same as values
        if (null === $value) {
            return $choices;
        }

        return parent::loadValuesForChoices($choices, $value);
    }
}