Current File : /home/vacivi36/code/vendor/friendsofphp/php-cs-fixer/src/Tokenizer/Analyzer/ReferenceAnalyzer.php
<?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\Analyzer;
use PhpCsFixer\Tokenizer\CT;
use PhpCsFixer\Tokenizer\Tokens;
/**
* @author Kuba Werłos <werlos@gmail.com>
*
* @internal
*/
final class ReferenceAnalyzer
{
public function isReference(Tokens $tokens, int $index): bool
{
if ($tokens[$index]->isGivenKind(CT::T_RETURN_REF)) {
return true;
}
if (!$tokens[$index]->equals('&')) {
return false;
}
/** @var int $index */
$index = $tokens->getPrevMeaningfulToken($index);
if ($tokens[$index]->equalsAny(['=', [T_AS], [T_CALLABLE], [T_DOUBLE_ARROW], [CT::T_ARRAY_TYPEHINT]])) {
return true;
}
if ($tokens[$index]->isGivenKind(T_STRING)) {
$index = $tokens->getPrevMeaningfulToken($index);
}
return $tokens[$index]->equalsAny(['(', ',', [T_NS_SEPARATOR], [CT::T_NULLABLE_TYPE]]);
}
}
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