class ClassDefinitionNameSpacingSniff

class ClassDefinitionNameSpacingSniff implements Sniff {
    
    /**
     * A list of tokenizers this sniff supports.
     *
     * @var array<string>
     */
    public $supportedTokenizers = [
        'CSS',
    ];
    
    /**
     * Returns the token types that this sniff is interested in.
     *
     * @return array<int, int|string>
     */
    public function register() {
        return [
            T_OPEN_CURLY_BRACKET,
        ];
    }
    
    //end register()
    
    /**
     * Processes the tokens that this sniff is interested in.
     *
     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file where the token was found.
     * @param int                         $stackPtr  The position in the stack where
     *                                               the token was found.
     *
     * @return void
     */
    public function process(File $phpcsFile, $stackPtr) {
        $tokens = $phpcsFile->getTokens();
        // Do not check nested style definitions as, for example, in @media style rules.
        $nested = $phpcsFile->findNext(T_OPEN_CURLY_BRACKET, $stackPtr + 1, $tokens[$stackPtr]['bracket_closer']);
        if ($nested !== false) {
            return;
        }
        // Find the first blank line before this opening brace, unless we get
        // to another style definition, comment or the start of the file.
        $endTokens = [
            T_OPEN_CURLY_BRACKET => T_OPEN_CURLY_BRACKET,
            T_CLOSE_CURLY_BRACKET => T_CLOSE_CURLY_BRACKET,
            T_OPEN_TAG => T_OPEN_TAG,
        ];
        $endTokens += Tokens::$commentTokens;
        $foundContent = false;
        $currentLine = $tokens[$stackPtr]['line'];
        for ($i = $stackPtr - 1; $i >= 0; $i--) {
            if (isset($endTokens[$tokens[$i]['code']]) === true) {
                break;
            }
            // A comma must be followed by a new line character.
            if ($tokens[$i]['code'] === T_COMMA && strpos($tokens[$i + 1]['content'], $phpcsFile->eolChar) === false) {
                $error = 'Multiple selectors should each be on a single line';
                $fix = $phpcsFile->addFixableError($error, $i + 1, 'MultipleSelectors');
                if ($fix === true) {
                    $phpcsFile->fixer
                        ->addNewline($i);
                }
            }
            // Selectors must be on the same line.
            if ($tokens[$i]['code'] === T_WHITESPACE && strpos($tokens[$i]['content'], $phpcsFile->eolChar) !== false && isset($endTokens[$tokens[$i - 1]['code']]) === false && in_array($tokens[$i - 1]['code'], [
                T_WHITESPACE,
                T_COMMA,
            ]) === false) {
                $error = 'Selectors must be on a single line';
                // cspell:ignore SeletorSingleLine
                $fix = $phpcsFile->addFixableError($error, $i, 'SeletorSingleLine');
                if ($fix === true) {
                    $phpcsFile->fixer
                        ->replaceToken($i, str_replace($phpcsFile->eolChar, ' ', $tokens[$i]['content']));
                }
            }
            if ($tokens[$i]['line'] === $currentLine) {
                if ($tokens[$i]['code'] !== T_WHITESPACE) {
                    $foundContent = true;
                }
                continue;
            }
            // We changed lines.
            if ($foundContent === false) {
                // Before we throw an error, make sure we are not looking
                // at a gap before the style definition.
                $prev = $phpcsFile->findPrevious(T_WHITESPACE, $i, null, true);
                if ($prev !== false && isset($endTokens[$tokens[$prev]['code']]) === false) {
                    $error = 'Blank lines are not allowed between class names';
                    $fix = $phpcsFile->addFixableError($error, $i + 1, 'BlankLinesFound');
                    if ($fix === true) {
                        $phpcsFile->fixer
                            ->replaceToken($i + 1, '');
                    }
                }
                break;
            }
            $foundContent = false;
            $currentLine = $tokens[$i]['line'];
        }
        
        //end for
    }
    
    //end process()

}