class ClassDeclarationSniff

class ClassDeclarationSniff extends PSR2ClassDeclarationSniff {
    
    /**
     * 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, $stackPtr) {
        // We want all the errors from the PSR2 standard, plus some of our own.
        parent::process($phpcsFile, $stackPtr);
        // Check that this is the only class or interface in the file.
        $nextClass = $phpcsFile->findNext([
            T_CLASS,
            T_INTERFACE,
        ], $stackPtr + 1);
        if ($nextClass !== false) {
            // We have another, so an error is thrown.
            $error = 'Only one interface or class is allowed in a file';
            $phpcsFile->addError($error, $nextClass, 'MultipleClasses');
        }
    }
    
    //end process()
    
    /**
     * Processes the opening section of a class declaration.
     *
     * @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 processOpen(File $phpcsFile, $stackPtr) {
        parent::processOpen($phpcsFile, $stackPtr);
        $tokens = $phpcsFile->getTokens();
        if ($tokens[$stackPtr - 1]['code'] === T_WHITESPACE) {
            $prevContent = $tokens[$stackPtr - 1]['content'];
            if ($prevContent !== $phpcsFile->eolChar) {
                $blankSpace = substr($prevContent, strpos($prevContent, $phpcsFile->eolChar));
                $spaces = strlen($blankSpace);
                if ($tokens[$stackPtr - 2]['code'] !== T_ABSTRACT && $tokens[$stackPtr - 2]['code'] !== T_FINAL && $tokens[$stackPtr - 2]['code'] !== T_READONLY) {
                    if ($spaces !== 0) {
                        $type = strtolower($tokens[$stackPtr]['content']);
                        $error = 'Expected 0 spaces before %s keyword; %s found';
                        $data = [
                            $type,
                            $spaces,
                        ];
                        $fix = $phpcsFile->addFixableError($error, $stackPtr, 'SpaceBeforeKeyword', $data);
                        if ($fix === true) {
                            $phpcsFile->fixer
                                ->replaceToken($stackPtr - 1, '');
                        }
                    }
                }
            }
            
            //end if
        }
        
        //end if
    }
    
    //end processOpen()
    
    /**
     * Processes the closing section of a class declaration.
     *
     * @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 processClose(File $phpcsFile, $stackPtr) {
        $tokens = $phpcsFile->getTokens();
        if (isset($tokens[$stackPtr]['scope_closer']) === false) {
            return;
        }
        $closeBrace = $tokens[$stackPtr]['scope_closer'];
        // Check that the closing brace has one blank line after it.
        for ($nextContent = $closeBrace + 1; $nextContent < $phpcsFile->numTokens; $nextContent++) {
            // Ignore comments on the same line as the brace.
            if ($tokens[$nextContent]['line'] === $tokens[$closeBrace]['line'] && ($tokens[$nextContent]['code'] === T_WHITESPACE || $tokens[$nextContent]['code'] === T_COMMENT || isset(Tokens::$phpcsCommentTokens[$tokens[$nextContent]['code']]) === true)) {
                continue;
            }
            if ($tokens[$nextContent]['code'] !== T_WHITESPACE) {
                break;
            }
        }
        if ($nextContent === $phpcsFile->numTokens) {
            // Ignore the line check as this is the very end of the file.
            $difference = 1;
        }
        else {
            $difference = $tokens[$nextContent]['line'] - $tokens[$closeBrace]['line'] - 1;
        }
        $lastContent = $phpcsFile->findPrevious(T_WHITESPACE, $closeBrace - 1, $stackPtr, true);
        if ($difference === -1 || $tokens[$lastContent]['line'] === $tokens[$closeBrace]['line']) {
            $error = 'Closing %s brace must be on a line by itself';
            $data = [
                $tokens[$stackPtr]['content'],
            ];
            $fix = $phpcsFile->addFixableError($error, $closeBrace, 'CloseBraceSameLine', $data);
            if ($fix === true) {
                if ($difference === -1) {
                    $phpcsFile->fixer
                        ->addNewlineBefore($nextContent);
                }
                if ($tokens[$lastContent]['line'] === $tokens[$closeBrace]['line']) {
                    $phpcsFile->fixer
                        ->addNewlineBefore($closeBrace);
                }
            }
        }
        else {
            if ($tokens[$closeBrace - 1]['code'] === T_WHITESPACE) {
                $prevContent = $tokens[$closeBrace - 1]['content'];
                if ($prevContent !== $phpcsFile->eolChar) {
                    $blankSpace = substr($prevContent, strpos($prevContent, $phpcsFile->eolChar));
                    $spaces = strlen($blankSpace);
                    if ($spaces !== 0) {
                        if ($tokens[$closeBrace - 1]['line'] !== $tokens[$closeBrace]['line']) {
                            $error = 'Expected 0 spaces before closing brace; newline found';
                            $phpcsFile->addError($error, $closeBrace, 'NewLineBeforeCloseBrace');
                        }
                        else {
                            $error = 'Expected 0 spaces before closing brace; %s found';
                            $data = [
                                $spaces,
                            ];
                            $fix = $phpcsFile->addFixableError($error, $closeBrace, 'SpaceBeforeCloseBrace', $data);
                            if ($fix === true) {
                                $phpcsFile->fixer
                                    ->replaceToken($closeBrace - 1, '');
                            }
                        }
                    }
                }
            }
        }
        
        //end if
        if ($difference !== -1 && $difference !== 1) {
            if ($tokens[$nextContent]['code'] === T_DOC_COMMENT_OPEN_TAG) {
                $next = $phpcsFile->findNext(T_WHITESPACE, $tokens[$nextContent]['comment_closer'] + 1, null, true);
                if ($next !== false && $tokens[$next]['code'] === T_FUNCTION) {
                    return;
                }
            }
            $error = 'Closing brace of a %s must be followed by a single blank line; found %s';
            $data = [
                $tokens[$stackPtr]['content'],
                $difference,
            ];
            $fix = $phpcsFile->addFixableError($error, $closeBrace, 'NewlinesAfterCloseBrace', $data);
            if ($fix === true) {
                if ($difference === 0) {
                    $first = $phpcsFile->findFirstOnLine([], $nextContent, true);
                    $phpcsFile->fixer
                        ->addNewlineBefore($first);
                }
                else {
                    $phpcsFile->fixer
                        ->beginChangeset();
                    for ($i = $closeBrace + 1; $i < $nextContent; $i++) {
                        if ($tokens[$i]['line'] <= $tokens[$closeBrace]['line'] + 1) {
                            continue;
                        }
                        else {
                            if ($tokens[$i]['line'] === $tokens[$nextContent]['line']) {
                                break;
                            }
                        }
                        $phpcsFile->fixer
                            ->replaceToken($i, '');
                    }
                    $phpcsFile->fixer
                        ->endChangeset();
                }
            }
        }
        
        //end if
    }
    
    //end processClose()

}