File "FirstClassCallableTransformer.php"

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<?php

declare(strict_types=1);

/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace PhpCsFixer\Tokenizer\Transformer;

use PhpCsFixer\Tokenizer\AbstractTransformer;
use PhpCsFixer\Tokenizer\CT;
use PhpCsFixer\Tokenizer\Token;
use PhpCsFixer\Tokenizer\Tokens;

/**
 * @internal
 *
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise.
 */
final class FirstClassCallableTransformer extends AbstractTransformer
{
    public function getRequiredPhpVersionId(): int
    {
        return 8_01_00;
    }

    public function process(Tokens $tokens, Token $token, int $index): void
    {
        if (
            $token->isGivenKind(\T_ELLIPSIS)
            && $tokens[$tokens->getPrevMeaningfulToken($index)]->equals('(')
            && $tokens[$tokens->getNextMeaningfulToken($index)]->equals(')')
        ) {
            $tokens[$index] = new Token([CT::T_FIRST_CLASS_CALLABLE, '...']);
        }
    }

    public function getCustomTokens(): array
    {
        return [
            CT::T_FIRST_CLASS_CALLABLE,
        ];
    }
}