ParameterHelper.php

<?php

declare (strict_types=1);
namespace SlevomatCodingStandard\Helpers;

use PHP_CodeSniffer\Files\File;
use function array_key_exists;
use function array_keys;
use function array_reverse;
use function in_array;

/**
 * @internal
 */
class ParameterHelper {
    public static function isParameter(File $phpcsFile, int $variablePointer) : bool {
        $tokens = $phpcsFile->getTokens();
        if (!array_key_exists('nested_parenthesis', $tokens[$variablePointer])) {
            return false;
        }
        $parenthesisOpenerPointer = array_reverse(array_keys($tokens[$variablePointer]['nested_parenthesis']))[0];
        if (!array_key_exists('parenthesis_owner', $tokens[$parenthesisOpenerPointer])) {
            return false;
        }
        $parenthesisOwnerPointer = $tokens[$parenthesisOpenerPointer]['parenthesis_owner'];
        return in_array($tokens[$parenthesisOwnerPointer]['code'], TokenHelper::$functionTokenCodes, true);
    }

}