Alert_indent.hs

{- This module was generated from data in the Kate syntax
   highlighting file alert_indent.xml, version 1.08, by Dominik Haumann (dhdev@gmx.de) -}

module Text.Highlighting.Kate.Syntax.Alert_indent
          (highlight, parseExpression, syntaxName, syntaxExtensions)
where
import Text.Highlighting.Kate.Types
import Text.Highlighting.Kate.Common
import Text.ParserCombinators.Parsec hiding (State)
import Data.Map (fromList)
import Control.Monad.State
import Data.Char (isSpace)
import Data.Maybe (fromMaybe)
import qualified Data.Set as Set

-- | Full name of language.
syntaxName :: String
syntaxName = "Alerts_indent"

-- | Filename extensions for this language.
syntaxExtensions :: String
syntaxExtensions = ""

-- | Highlight source code using this syntax definition.
highlight :: String -> [SourceLine]
highlight input = evalState (mapM parseSourceLine $ lines input) startingState

parseSourceLine :: String -> State SyntaxState SourceLine
parseSourceLine = mkParseSourceLine parseExpressionInternal pEndLine

-- | Parse an expression using appropriate local context.
parseExpression :: KateParser Token
parseExpression = do
  st <- getState
  let oldLang = synStLanguage st
  setState $ st { synStLanguage = "Alerts_indent" }
  context <- currentContext <|> (pushContext "Normal Text" >> currentContext)
  result <- parseRules context
  optional $ eof >> pEndLine
  updateState $ \st -> st { synStLanguage = oldLang }
  return result

startingState = SyntaxState {synStContexts = fromList [("Alerts_indent",["Normal Text"])], synStLanguage = "Alerts_indent", synStLineNumber = 0, synStPrevChar = '\n', synStPrevNonspace = False, synStCaseSensitive = True, synStKeywordCaseSensitive = True, synStCaptures = []}

pEndLine = do
  updateState $ \st -> st{ synStPrevNonspace = False }
  context <- currentContext
  case context of
    "Normal Text" -> (popContext) >> pEndLine
    _ -> 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)

parseExpressionInternal = do
  context <- currentContext
  parseRules context <|> (pDefault >>= withAttribute (fromMaybe NormalTok $ lookup context defaultAttributes))

list_alerts = Set.fromList $ words $ "### ALERT BUG DANGER DEPRECATED FIXME HACK NOTE NOTICE SECURITY TASK TEST TESTING TODO WARNING"


defaultAttributes = [("Normal Text",NormalTok)]

parseRules "Normal Text" =
  ((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_alerts >>= withAttribute AlertTok))

parseRules "" = parseRules "Normal Text"

parseRules x = fail $ "Unknown context" ++ x