File "NamespaceOperatorTransformer.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;

/**
 * Transform `namespace` operator from T_NAMESPACE into CT::T_NAMESPACE_OPERATOR.
 *
 * @author Gregor Harlan <gharlan@web.de>
 *
 * @internal
 *
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise.
 */
final class NamespaceOperatorTransformer extends AbstractTransformer
{
    public function getRequiredPhpVersionId(): int
    {
        return 5_03_00;
    }

    public function process(Tokens $tokens, Token $token, int $index): void
    {
        if (!$token->isGivenKind(\T_NAMESPACE)) {
            return;
        }

        $nextIndex = $tokens->getNextMeaningfulToken($index);

        if ($tokens[$nextIndex]->isGivenKind(\T_NS_SEPARATOR)) {
            $tokens[$index] = new Token([CT::T_NAMESPACE_OPERATOR, $token->getContent()]);
        }
    }

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