class DebugCodeSniff

class DebugCodeSniff implements Sniff {
    
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register() {
        return [
            T_DOUBLE_COLON,
        ];
    }
    
    //end register()
    
    /**
     * Processes this sniff, 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) {
        $tokens = $phpcsFile->getTokens();
        $className = $phpcsFile->findPrevious(T_WHITESPACE, $stackPtr - 1, null, true);
        if (strtolower($tokens[$className]['content']) === 'debug') {
            $method = $phpcsFile->findNext(T_WHITESPACE, $stackPtr + 1, null, true);
            $error = 'Call to debug function Debug::%s() must be removed';
            $data = [
                $tokens[$method]['content'],
            ];
            $phpcsFile->addError($error, $stackPtr, 'Found', $data);
        }
    }
    
    //end process()

}