<?php

class documentation_Sniffs_VariableCommentSniff extends Squiz_Sniffs_Commenting_VariableCommentSniff
{
    public function processMemberVar(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
    {
        $this->currentFile = $phpcsFile;
        $tokens            = $phpcsFile->getTokens();
        $commentToken      = array(
                              T_COMMENT,
                              T_DOC_COMMENT,
                             );

        // Extract the var comment docblock.
        $commentEnd = $phpcsFile->findPrevious($commentToken, ($stackPtr - 3));
        if ($commentEnd !== false && $tokens[$commentEnd]['code'] === T_COMMENT) {
            $phpcsFile->addError('You must use "/**" style comments for a variable comment', $stackPtr);
            return;
        } else if ($commentEnd === false || $tokens[$commentEnd]['code'] !== T_DOC_COMMENT) {
            $phpcsFile->addError('Missing variable doc comment', $stackPtr);
            return;
        } else {
            // Make sure the comment we have found belongs to us.
            $commentFor = $phpcsFile->findNext(array(T_VARIABLE, T_CLASS, T_INTERFACE), ($commentEnd + 1));
            if ($commentFor !== $stackPtr) {
                $phpcsFile->addError('Missing variable doc comment', $stackPtr);
                return;
            }
        }

        $commentStart = ($phpcsFile->findPrevious(T_DOC_COMMENT, ($commentEnd - 1), null, true) + 1);
        $comment      = $phpcsFile->getTokensAsString($commentStart, ($commentEnd - $commentStart + 1));

        // Parse the header comment docblock.
        try {
            $this->commentParser = new PHP_CodeSniffer_CommentParser_MemberCommentParser($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 = 'Variable doc comment is empty';
            $phpcsFile->addError($error, $commentStart);
            return;
        }

        // Check for a comment description.
        $short = $comment->getShortComment();
        $long  = '';
        if (trim($short) === '') {
            $newlineCount = 1;
        } else {
            // No extra newline before short description.
            $newlineCount = 0;
            $newlineSpan  = strspn($short, $phpcsFile->eolChar);

            $newlineCount = (substr_count($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);

                $newlineCount += $newlineBetween;

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

            // Short description must be single line and end with a full stop.
            $testShort = trim($short);
            $lastChar  = $testShort[(strlen($testShort) - 1)];
            if (substr_count($testShort, $phpcsFile->eolChar) !== 0) {
            }

            if (preg_match('|[A-Z]|', $testShort[0]) === 0) {
            }

            if ($lastChar !== '.') {
            }
        }//end if

        // Exactly one blank line before tags.
        $tags = $this->commentParser->getTagOrders();
        if (count($tags) > 1) {
            $newlineSpan = $comment->getNewlineAfter();
            if ($newlineSpan !== 2) {
                $short = rtrim($short, $phpcsFile->eolChar.' ');
            }
        }

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

    }//end processMemberVar()


    protected function processVar($commentStart, $commentEnd)
    {
        $var = $this->commentParser->getVar();

        if ($var !== null) {
            $errorPos = ($commentStart + $var->getLine());
            $index    = array_keys($this->commentParser->getTagOrders(), 'var');

            if (count($index) > 1) {
                $error = 'Only 1 @var tag is allowed in variable comment';
                $this->currentFile->addError($error, $errorPos);
                return;
            }

            if ($index[0] !== 1) {
                $error = 'The @var tag must be the first tag in a variable comment';
                $this->currentFile->addError($error, $errorPos);
            }

            $content = $var->getContent();
            if (empty($content) === true) {
                $error = 'Var type missing for @var tag in variable comment';
                $this->currentFile->addError($error, $errorPos);
                return;
            } else {
                $suggestedType = PHP_CodeSniffer::suggestType($content);
                if ($content !== $suggestedType) {
                    $error = "Expected \"$suggestedType\"; found \"$content\" for @var tag in variable comment";
                    $this->currentFile->addError($error, $errorPos);
                }
            }

            $spacing = substr_count($var->getWhitespaceBeforeContent(), ' ');
            if ($spacing !== 3) {
                $error  = '@var tag indented incorrectly. ';
                $error .= "Expected 3 spaces but found $spacing.";
                $this->currentFile->addError($error, $errorPos);
            }
        } else {
            $error = 'Missing @var tag in variable comment';
            $this->currentFile->addError($error, $commentEnd);
        }//end if

    }//end processVar()

}//end class
?>