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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\Validator\Constraints;

use Symfony\Component\Validator\Constraint;

/**
 * @Annotation
 * @Target({"CLASS", "PROPERTY", "METHOD", "ANNOTATION"})
 *
 * @author Bernhard Schussek <[email protected]>
 */
#[\Attribute(\Attribute::TARGET_CLASS | \Attribute::TARGET_PROPERTY | \Attribute::TARGET_METHOD | \Attribute::IS_REPEATABLE)]
class Callback extends Constraint
{
    /**
     * @var string|callable
     */
    public $callback;

    /**
     * {@inheritdoc}
     *
     * @param array|string|callable $callback The callback or a set of options
     */
    public function __construct($callback = null, ?array $groups = null, $payload = null, array $options = [])
    {
        // Invocation through annotations with an array parameter only
        if (\is_array($callback) && 1 === \count($callback) && isset($callback['value'])) {
            $callback = $callback['value'];
        }

        if (!\is_array($callback) || (!isset($callback['callback']) && !isset($callback['groups']) && !isset($callback['payload']))) {
            $options['callback'] = $callback;
        } else {
            $options = array_merge($callback, $options);
        }

        parent::__construct($options, $groups, $payload);
    }

    /**
     * {@inheritdoc}
     */
    public function getDefaultOption()
    {
        return 'callback';
    }

    /**
     * {@inheritdoc}
     */
    public function getTargets()
    {
        return [self::CLASS_CONSTRAINT, self::PROPERTY_CONSTRAINT];
    }
}