diff options
Diffstat (limited to 'haddock-library/src/Documentation')
| -rw-r--r-- | haddock-library/src/Documentation/Haddock/Parser.hs | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/haddock-library/src/Documentation/Haddock/Parser.hs b/haddock-library/src/Documentation/Haddock/Parser.hs index f0597462..b7178842 100644 --- a/haddock-library/src/Documentation/Haddock/Parser.hs +++ b/haddock-library/src/Documentation/Haddock/Parser.hs @@ -13,7 +13,12 @@ -- Maintainer : haddock@projects.haskell.org -- Stability : experimental -- Portability : portable - +-- +-- Parser used for Haddock comments. For external users of this +-- library, the most commonly used combination of functions is going +-- to be +-- +-- @'toRegular' . 'parseParas'@ module Documentation.Haddock.Parser ( parseString, parseParas , overIdentifier, toRegular, Identifier ) where @@ -97,15 +102,16 @@ parseStringBS :: BS.ByteString -> DocH mod Identifier parseStringBS = parse p where p :: Parser (DocH mod Identifier) - p = mconcat <$> many (monospace <|> anchor <|> identifier - <|> moduleName <|> picture <|> hyperlink <|> autoUrl <|> bold - <|> emphasis <|> encodedChar <|> string' <|> skipSpecialChar) + p = mconcat <$> many (monospace <|> anchor <|> identifier <|> moduleName + <|> picture <|> hyperlink <|> autoUrl <|> bold + <|> emphasis <|> encodedChar <|> string' + <|> skipSpecialChar) -- | Parses and processes -- <https://en.wikipedia.org/wiki/Numeric_character_reference Numeric character references> -- --- >>> parseOnly encodedChar "ABC" --- Right (DocString "ABC") +-- >>> parseOnly encodedChar "A" +-- Right (DocString "A") encodedChar :: Parser (DocH mod a) encodedChar = "&#" *> c <* ";" where @@ -183,7 +189,7 @@ moduleName = DocModule <$> (char '"' *> modid <* char '"') modid = intercalate "." <$> conid `sepBy1` "." conid = (:) <$> satisfy isAsciiUpper - -- NOTE: According to Haskell 2010 we shouldd actually only + -- NOTE: According to Haskell 2010 we should actually only -- accept {small | large | digit | ' } here. But as we can't -- match on unicode characters, this is currently not possible. <*> (decodeUtf8 <$> takeWhile (`notElem` " .&[{}(=*)+]!#|@/;,^?\"\n")) @@ -192,9 +198,9 @@ moduleName = DocModule <$> (char '"' *> modid <* char '"') -- a title for the picture. -- -- >>> parseOnly picture "<<hello.png>>" --- Right (DocPic (Picture "hello.png" Nothing)) +-- Right (DocPic (Picture {pictureUri = "hello.png", pictureTitle = Nothing})) -- >>> parseOnly picture "<<hello.png world>>" --- Right (DocPic (Picture "hello.png" (Just "world"))) +-- Right (DocPic (Picture {pictureUri = "hello.png", pictureTitle = Just "world"})) picture :: Parser (DocH mod a) picture = DocPic . makeLabeled Picture . decodeUtf8 <$> disallowNewline ("<<" *> takeUntil ">>") @@ -205,6 +211,8 @@ paragraph = examples <|> skipSpace *> (list <|> birdtracks <|> codeblock <|> property <|> header <|> textParagraph) +-- | Headers inside the comment denoted with @=@ signs, up to 6 levels +-- deep. header :: Parser (DocH mod Identifier) header = do let psers = map (string . encodeUtf8 . concat . flip replicate "=") [6, 5 .. 1] @@ -330,6 +338,14 @@ takeNonEmptyLine :: Parser String takeNonEmptyLine = do (++ "\n") . decodeUtf8 <$> (takeWhile1 (/= '\n') >>= nonSpace) <* "\n" +-- | Blocks of text of the form: +-- +-- @ +-- > foo +-- > bar +-- > baz +-- @ +-- birdtracks :: Parser (DocH mod a) birdtracks = DocCodeBlock . DocString . intercalate "\n" . stripSpace <$> many1 line where @@ -427,11 +443,14 @@ codeblock = | isNewline && isSpace c = Just isNewline | otherwise = Just $ c == '\n' +-- | Parses links that were specifically marked as such. hyperlink :: Parser (DocH mod a) hyperlink = DocHyperlink . makeLabeled Hyperlink . decodeUtf8 <$> disallowNewline ("<" *> takeUntil ">") <|> autoUrl +-- | Looks for URL-like things to automatically hyperlink even if they +-- weren't marked as links. autoUrl :: Parser (DocH mod a) autoUrl = mkLink <$> url where |