class PropertyLabelSpacingSniff

class PropertyLabelSpacingSniff implements Sniff {
    
    /**
     * A list of tokenizers this sniff supports.
     *
     * @var array
     */
    public $supportedTokenizers = [
        'JS',
    ];
    
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register() {
        return [
            T_PROPERTY,
            T_LABEL,
        ];
    }
    
    //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();
        $colon = $phpcsFile->findNext(T_COLON, $stackPtr + 1);
        if ($colon !== $stackPtr + 1) {
            $error = 'There must be no space before the colon in a property/label declaration';
            $fix = $phpcsFile->addFixableError($error, $stackPtr, 'Before');
            if ($fix === true) {
                $phpcsFile->fixer
                    ->replaceToken($stackPtr + 1, '');
            }
        }
        if ($tokens[$colon + 1]['code'] !== T_WHITESPACE || $tokens[$colon + 1]['content'] !== ' ') {
            $error = 'There must be a single space after the colon in a property/label declaration';
            $fix = $phpcsFile->addFixableError($error, $stackPtr, 'After');
            if ($fix === true) {
                if ($tokens[$colon + 1]['code'] === T_WHITESPACE) {
                    $phpcsFile->fixer
                        ->replaceToken($colon + 1, ' ');
                }
                else {
                    $phpcsFile->fixer
                        ->addContent($colon, ' ');
                }
            }
        }
    }
    
    //end process()

}