module Text.Highlighting.Kate.Syntax.Alert_indent
(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)
syntaxName :: String
syntaxName = "Alerts_indent"
syntaxExtensions :: String
syntaxExtensions = ""
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 = [("Alerts_indent","Normal Text")], synStLineNumber = 0, synStPrevChar = '\n', synStPrevNonspace = False, synStContinuation = False, synStCaseSensitive = True, synStKeywordCaseSensitive = True, 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 }
("Alerts_indent","Normal Text") -> (popContext) >> pEndLine
_ -> 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)
parseRules ("Alerts_indent","Normal Text") =
(((Text.Highlighting.Kate.Syntax.Alert.parseExpression (Just ("Alerts",""))))
<|>
(currentContext >>= \x -> guard (x == ("Alerts_indent","Normal Text")) >> pDefault >>= withAttribute NormalTok))
parseRules ("Alerts", _) = Text.Highlighting.Kate.Syntax.Alert.parseExpression Nothing
parseRules x = parseRules ("Alerts_indent","Normal Text") <|> fail ("Unknown context" ++ show x)