class ElseIfDeclarationSniff

class ElseIfDeclarationSniff implements Sniff {
    
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register() {
        return [
            T_ELSE,
            T_ELSEIF,
        ];
    }
    
    //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) {
        $tokens = $phpcsFile->getTokens();
        if ($tokens[$stackPtr]['code'] === T_ELSEIF) {
            $phpcsFile->recordMetric($stackPtr, 'Use of ELSE IF or ELSEIF', 'elseif');
            return;
        }
        $next = $phpcsFile->findNext(T_WHITESPACE, $stackPtr + 1, null, true);
        if ($tokens[$next]['code'] === T_IF) {
            $phpcsFile->recordMetric($stackPtr, 'Use of ELSE IF or ELSEIF', 'else if');
            $error = 'Usage of ELSE IF is discouraged; use ELSEIF instead';
            $fix = $phpcsFile->addFixableWarning($error, $stackPtr, 'NotAllowed');
            if ($fix === true) {
                $phpcsFile->fixer
                    ->beginChangeset();
                $phpcsFile->fixer
                    ->replaceToken($stackPtr, 'elseif');
                for ($i = $stackPtr + 1; $i <= $next; $i++) {
                    $phpcsFile->fixer
                        ->replaceToken($i, '');
                }
                $phpcsFile->fixer
                    ->endChangeset();
            }
        }
    }
    
    //end process()

}