module Text.Highlighting.Kate.Syntax.Relaxng
(highlight, parseExpression, syntaxName, syntaxExtensions)
where
import Text.Highlighting.Kate.Types
import Text.Highlighting.Kate.Common
import qualified Text.Highlighting.Kate.Syntax.Alert
import Text.ParserCombinators.Parsec hiding (State)
import Control.Monad.State
import Data.Char (isSpace)
import qualified Data.Set as Set
syntaxName :: String
syntaxName = "RELAX NG"
syntaxExtensions :: String
syntaxExtensions = "*.rng;*.RNG"
highlight :: String -> [SourceLine]
highlight input = evalState (mapM parseSourceLine $ lines input) startingState
parseSourceLine :: String -> State SyntaxState SourceLine
parseSourceLine = mkParseSourceLine (parseExpression Nothing)
parseExpression :: Maybe (String,String)
-> KateParser Token
parseExpression mbcontext = do
(lang,cont) <- maybe currentContext return mbcontext
result <- parseRules (lang,cont)
optional $ do eof
updateState $ \st -> st{ synStPrevChar = '\n' }
pEndLine
return result
startingState = SyntaxState {synStContexts = [("RELAX NG","normalText")], synStLineNumber = 0, synStPrevChar = '\n', synStPrevNonspace = False, synStContinuation = False, synStCaseSensitive = True, synStKeywordCaseSensitive = False, synStCaptures = []}
pEndLine = do
updateState $ \st -> st{ synStPrevNonspace = False }
context <- currentContext
contexts <- synStContexts `fmap` getState
st <- getState
if length contexts >= 2
then case context of
_ | synStContinuation st -> updateState $ \st -> st{ synStContinuation = False }
("RELAX NG","normalText") -> return ()
("RELAX NG","detectEntRef") -> return ()
("RELAX NG","tagname") -> return ()
("RELAX NG","attributes") -> return ()
("RELAX NG","attrValue") -> return ()
("RELAX NG","string") -> return ()
("RELAX NG","comment") -> return ()
_ -> return ()
else return ()
withAttribute attr txt = do
when (null txt) $ fail "Parser matched no text"
updateState $ \st -> st { synStPrevChar = last txt
, synStPrevNonspace = synStPrevNonspace st || not (all isSpace txt) }
return (attr, txt)
list_relaxngnames = Set.fromList $ words $ "anyname attribute choice data define div element empty except externalref grammar group include interleave list mixed name notallowed nsname oneormore optional param parentref ref start text value zeroormore"
regex_'26'28'23'5b0'2d9'5d'2b'7c'23'5bxX'5d'5b0'2d9A'2dFa'2df'5d'2b'7c'5bA'2dZa'2dz'5f'3a'5d'5b'5cw'2e'3a'5f'2d'5d'2a'29'3b = compileRegex True "&(#[0-9]+|#[xX][0-9A-Fa-f]+|[A-Za-z_:][\\w.:_-]*);"
regex_'5cs'2a = compileRegex True "\\s*"
regex_'5cs'2a'3d'5cs'2a = compileRegex True "\\s*=\\s*"
regex_'2d'28'2d'28'3f'21'2d'3e'29'29'2b = compileRegex True "-(-(?!->))+"
parseRules ("RELAX NG","normalText") =
(((pString False "<!--" >>= withAttribute CommentTok) >>~ pushContext ("RELAX NG","comment"))
<|>
((pDetectChar False '<' >>= withAttribute KeywordTok) >>~ pushContext ("RELAX NG","tagname"))
<|>
((pRegExpr regex_'26'28'23'5b0'2d9'5d'2b'7c'23'5bxX'5d'5b0'2d9A'2dFa'2df'5d'2b'7c'5bA'2dZa'2dz'5f'3a'5d'5b'5cw'2e'3a'5f'2d'5d'2a'29'3b >>= withAttribute NormalTok))
<|>
(currentContext >>= \x -> guard (x == ("RELAX NG","normalText")) >> pDefault >>= withAttribute NormalTok))
parseRules ("RELAX NG","detectEntRef") =
(((pRegExpr regex_'26'28'23'5b0'2d9'5d'2b'7c'23'5bxX'5d'5b0'2d9A'2dFa'2df'5d'2b'7c'5bA'2dZa'2dz'5f'3a'5d'5b'5cw'2e'3a'5f'2d'5d'2a'29'3b >>= withAttribute NormalTok))
<|>
(currentContext >>= \x -> guard (x == ("RELAX NG","detectEntRef")) >> pDefault >>= withAttribute NormalTok))
parseRules ("RELAX NG","tagname") =
(((pKeyword " \n\t.()!+,<=>%&*/;?[]^{|}~\\\"{}" list_relaxngnames >>= withAttribute NormalTok) >>~ pushContext ("RELAX NG","attributes"))
<|>
((pRegExpr regex_'5cs'2a >>= withAttribute OtherTok) >>~ pushContext ("RELAX NG","attributes"))
<|>
((pDetectChar False '>' >>= withAttribute KeywordTok) >>~ (popContext))
<|>
(currentContext >>= \x -> guard (x == ("RELAX NG","tagname")) >> pDefault >>= withAttribute KeywordTok))
parseRules ("RELAX NG","attributes") =
(((pDetect2Chars False '/' '>' >>= withAttribute KeywordTok) >>~ (popContext >> popContext))
<|>
((pDetectChar False '>' >>= withAttribute KeywordTok) >>~ (popContext >> popContext))
<|>
((pRegExpr regex_'5cs'2a'3d'5cs'2a >>= withAttribute NormalTok) >>~ pushContext ("RELAX NG","attrValue"))
<|>
(currentContext >>= \x -> guard (x == ("RELAX NG","attributes")) >> pDefault >>= withAttribute OtherTok))
parseRules ("RELAX NG","attrValue") =
(((pDetect2Chars False '/' '>' >>= withAttribute ErrorTok) >>~ (popContext >> popContext >> popContext))
<|>
((pDetectChar False '>' >>= withAttribute ErrorTok) >>~ (popContext >> popContext >> popContext))
<|>
((pDetectChar False '"' >>= withAttribute StringTok) >>~ pushContext ("RELAX NG","string"))
<|>
(currentContext >>= \x -> guard (x == ("RELAX NG","attrValue")) >> pDefault >>= withAttribute ErrorTok))
parseRules ("RELAX NG","string") =
(((pDetectChar False '"' >>= withAttribute StringTok) >>~ (popContext >> popContext))
<|>
((parseRules ("RELAX NG","detectEntRef")))
<|>
(currentContext >>= \x -> guard (x == ("RELAX NG","string")) >> pDefault >>= withAttribute StringTok))
parseRules ("RELAX NG","comment") =
(((pDetectSpaces >>= withAttribute CommentTok))
<|>
((pString False "-->" >>= withAttribute CommentTok) >>~ (popContext))
<|>
((pRegExpr regex_'2d'28'2d'28'3f'21'2d'3e'29'29'2b >>= withAttribute NormalTok))
<|>
((Text.Highlighting.Kate.Syntax.Alert.parseExpression (Just ("Alerts","")) >>= ((withAttribute CommentTok) . snd)))
<|>
((pDetectIdentifier >>= withAttribute CommentTok))
<|>
(currentContext >>= \x -> guard (x == ("RELAX NG","comment")) >> pDefault >>= withAttribute CommentTok))
parseRules ("Alerts", _) = Text.Highlighting.Kate.Syntax.Alert.parseExpression Nothing
parseRules x = parseRules ("RELAX NG","normalText") <|> fail ("Unknown context" ++ show x)