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AlternativeSyntaxAnalyzer.php
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AlternativeSyntaxAnalyzer.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\Analyzer;
use PhpCsFixer\Tokenizer\Tokens;
/**
* @internal
* @TODO 4.0 remove this analyzer and move this logic into a transformer
*/
final class AlternativeSyntaxAnalyzer
{
public function belongsToAlternativeSyntax(Tokens $tokens, int $index): bool
{
if (!$tokens[$index]->equals(':')) {
return false;
}
$prevIndex = $tokens->getPrevMeaningfulToken($index);
if ($tokens[$prevIndex]->isGivenKind(T_ELSE)) {
return true;
}
if (!$tokens[$prevIndex]->equals(')')) {
return false;
}
$openParenthesisIndex = $tokens->findBlockStart(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $prevIndex);
$beforeOpenParenthesisIndex = $tokens->getPrevMeaningfulToken($openParenthesisIndex);
return $tokens[$beforeOpenParenthesisIndex]->isGivenKind([
T_DECLARE,
T_ELSEIF,
T_FOR,
T_FOREACH,
T_IF,
T_SWITCH,
T_WHILE,
]);
}
}