archived-phpruntests/cs/documentation/Sniffs/ClassCommentSniff.php

<?php

class documentation_Sniffs_ClassCommentSniff extends Squiz_Sniffs_Commenting_ClassCommentSniff
{
    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
    {
        $this->currentFile = $phpcsFile;

        $tokens = $phpcsFile->getTokens();
        $find   = array (
                   T_ABSTRACT,
                   T_WHITESPACE,
                   T_FINAL,
                  );

        // Extract the class comment docblock.
        $commentEnd = $phpcsFile->findPrevious($find, ($stackPtr - 1), null, true);

        if ($commentEnd !== false && $tokens[$commentEnd]['code'] === T_COMMENT) {
            $phpcsFile->addError('You must use "/**" style comments for a class comment', $stackPtr);
            return;
        } else if ($commentEnd === false || $tokens[$commentEnd]['code'] !== T_DOC_COMMENT) {
            $phpcsFile->addError('Missing class doc comment', $stackPtr);
            return;
        }

        $commentStart = ($phpcsFile->findPrevious(T_DOC_COMMENT, ($commentEnd - 1), null, true) + 1);
        $commentNext  = $phpcsFile->findPrevious(T_WHITESPACE, ($commentEnd + 1), $stackPtr, false, $phpcsFile->eolChar);

        // Distinguish file and class comment.
        $prevClassToken = $phpcsFile->findPrevious(T_CLASS, ($stackPtr - 1));
        if ($prevClassToken === false) {
            // This is the first class token in this file, need extra checks.
            $prevNonComment = $phpcsFile->findPrevious(T_DOC_COMMENT, ($commentStart - 1), null, true);
            if ($prevNonComment !== false) {
                $prevComment = $phpcsFile->findPrevious(T_DOC_COMMENT, ($prevNonComment - 1));
                if ($prevComment === false) {
                    // There is only 1 doc comment between open tag and class token.
                    $newlineToken = $phpcsFile->findNext(T_WHITESPACE, ($commentEnd + 1), $stackPtr, false, $phpcsFile->eolChar);
                    if ($newlineToken !== false) {
                        $newlineToken = $phpcsFile->findNext(T_WHITESPACE, ($newlineToken + 1), $stackPtr, false, $phpcsFile->eolChar);
                        if ($newlineToken !== false) {
                            // Blank line between the class and the doc block.
                            // The doc block is most likely a file comment.
                            $phpcsFile->addError('Missing class doc comment', ($stackPtr + 1));
                            return;
                        }
                    }//end if
                }//end if

                // Exactly one blank line before the class comment.
                $prevTokenEnd = $phpcsFile->findPrevious(T_WHITESPACE, ($commentStart - 1), null, true);
                if ($prevTokenEnd !== false) {
                    $blankLineBefore = 0;
                    for ($i = ($prevTokenEnd + 1); $i < $commentStart; $i++) {
                        if ($tokens[$i]['code'] === T_WHITESPACE && $tokens[$i]['content'] === $phpcsFile->eolChar) {
                            $blankLineBefore++;
                        }
                    }

                    if ($blankLineBefore !== 1) {
                        $error = 'There must be exactly one blank line before the class comment';
                        $phpcsFile->addError($error, ($commentStart - 1));
                    }
                }

            }//end if
        }//end if

        $comment = $phpcsFile->getTokensAsString($commentStart, ($commentEnd - $commentStart + 1));

        // Parse the class comment docblock.
        try {
            $this->commentParser = new PHP_CodeSniffer_CommentParser_ClassCommentParser($comment, $phpcsFile);
            $this->commentParser->parse();
        } catch (PHP_CodeSniffer_CommentParser_ParserException $e) {
            $line = ($e->getLineWithinComment() + $commentStart);
            $phpcsFile->addError($e->getMessage(), $line);
            return;
        }

        $comment = $this->commentParser->getComment();
        if (is_null($comment) === true) {
            $error = 'Class doc comment is empty';
            $phpcsFile->addError($error, $commentStart);
            return;
        }

        // Check for a comment description.
        $short = rtrim($comment->getShortComment(), $phpcsFile->eolChar);
        if (trim($short) === '') {
            $error = 'Missing short description in class doc comment';
            $phpcsFile->addError($error, $commentStart);
            return;
        }

        // No extra newline before short description.
        $newlineCount = 0;
        $newlineSpan  = strspn($short, $phpcsFile->eolChar);
        if ($short !== '' && $newlineSpan > 0) {
            $line  = ($newlineSpan > 1) ? 'newlines' : 'newline';
            $error = "Extra $line found before class comment short description";
            $phpcsFile->addError($error, ($commentStart + 1));
        }

        $newlineCount = (substr_count($short, $phpcsFile->eolChar) + 1);

        // Exactly one blank line between short and long description.
        $long = $comment->getLongComment();
        if (empty($long) === false) {
            $between        = $comment->getWhiteSpaceBetween();
            $newlineBetween = substr_count($between, $phpcsFile->eolChar);
            if ($newlineBetween !== 2) {
                $error = 'There must be exactly one blank line between descriptions in class comment';
                $phpcsFile->addError($error, ($commentStart + $newlineCount + 1));
            }

            $newlineCount += $newlineBetween;

            $testLong = trim($long);
            if (preg_match('|[A-Z]|', $testLong[0]) === 0) {
                $error = 'Class comment long description must start with a capital letter';
                $phpcsFile->addError($error, ($commentStart + $newlineCount));
            }
        }

        // Exactly one blank line before tags.
        $tags = $this->commentParser->getTagOrders();
        if (count($tags) > 1) {
            $newlineSpan = $comment->getNewlineAfter();
            if ($newlineSpan !== 2) {
                $error = 'There must be exactly one blank line before the tags in class comment';
                if ($long !== '') {
                    $newlineCount += (substr_count($long, $phpcsFile->eolChar) - $newlineSpan + 1);
                }

                $phpcsFile->addError($error, ($commentStart + $newlineCount));
                $short = rtrim($short, $phpcsFile->eolChar.' ');
            }
        }

        // Check for unknown/deprecated tags.
        $unknownTags = $this->commentParser->getUnknown();
        foreach ($unknownTags as $errorTag) {
            $error = "@$errorTag[tag] tag is not allowed in class comment";
            $phpcsFile->addWarning($error, ($commentStart + $errorTag['line']));
            return;
        }

    }//end process()

}//end class
?>