class ClassFileNameSniff

class ClassFileNameSniff implements Sniff {
    
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register() {
        return [
            T_CLASS,
            T_INTERFACE,
            T_TRAIT,
            T_ENUM,
        ];
    }
    
    //end register()
    
    /**
     * Processes this test, when one of its tokens is encountered.
     *
     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
     * @param int                         $stackPtr  The position of the current token in
     *                                               the stack passed in $tokens.
     *
     * @return void
     */
    public function process(File $phpcsFile, $stackPtr) {
        $fullPath = basename($phpcsFile->getFilename());
        $fileName = substr($fullPath, 0, strrpos($fullPath, '.'));
        if ($fileName === '') {
            // No filename probably means STDIN, so we can't do this check.
            return;
        }
        $tokens = $phpcsFile->getTokens();
        $decName = $phpcsFile->findNext(T_STRING, $stackPtr);
        if ($tokens[$decName]['content'] !== $fileName) {
            $error = '%s name doesn\'t match filename; expected "%s %s"';
            $data = [
                ucfirst($tokens[$stackPtr]['content']),
                $tokens[$stackPtr]['content'],
                $fileName,
            ];
            $phpcsFile->addError($error, $stackPtr, 'NoMatch', $data);
        }
    }
    
    //end process()

}