function JoinStringsSniff::process

Processes this test, when one of its tokens is encountered.

Parameters

\PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.:

integer $stackPtr The position of the current token: in the stack passed in $tokens.

Return value

void

Overrides Sniff::process

File

vendor/squizlabs/php_codesniffer/src/Standards/MySource/Sniffs/Strings/JoinStringsSniff.php, line 50

Class

JoinStringsSniff

Namespace

PHP_CodeSniffer\Standards\MySource\Sniffs\Strings

Code

public function process(File $phpcsFile, $stackPtr) {
    $tokens = $phpcsFile->getTokens();
    if ($tokens[$stackPtr]['content'] !== 'join') {
        return;
    }
    $prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, $stackPtr - 1, null, true);
    if ($tokens[$prev]['code'] !== T_OBJECT_OPERATOR) {
        return;
    }
    $prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, $prev - 1, null, true);
    if ($tokens[$prev]['code'] === T_CLOSE_SQUARE_BRACKET) {
        $opener = $tokens[$prev]['bracket_opener'];
        if ($tokens[$opener - 1]['code'] !== T_STRING) {
            // This means the array is declared inline, like x = [a,b,c].join()
            // and not elsewhere, like x = y[a].join()
            // The first is not allowed while the second is.
            $error = 'Joining strings using inline arrays is not allowed; use the + operator instead';
            $phpcsFile->addError($error, $stackPtr, 'ArrayNotAllowed');
        }
    }
}