    {- This module was generated from data in the Kate syntax highlighting file prolog.xml, version 1.04,
       by   -}

    module Text.Highlighting.Kate.Syntax.Prolog ( highlight, parseExpression, syntaxName, syntaxExtensions ) where
    import Text.Highlighting.Kate.Definitions
    import Text.Highlighting.Kate.Common
    import Text.ParserCombinators.Parsec
    import Data.List (nub)
    import qualified Data.Set as Set
    import Data.Map (fromList)
    import Data.Maybe (fromMaybe)

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

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

    -- | Highlight source code using this syntax definition.
    highlight :: String -> Either String [SourceLine]
    highlight input =
      case runParser parseSource startingState "source" input of
        Left err     -> Left $ show err
        Right result -> Right result

    -- | Parse an expression using appropriate local context.
    parseExpression :: GenParser Char SyntaxState LabeledSource
    parseExpression = do
      st <- getState
      let oldLang = synStLanguage st
      setState $ st { synStLanguage = "Prolog" }
      context <- currentContext <|> (pushContext "normal" >> currentContext)
      result <- parseRules context
      updateState $ \st -> st { synStLanguage = oldLang }
      return result

    parseSource = do
      lineContents <- lookAhead wholeLine
      updateState $ \st -> st { synStCurrentLine = lineContents }
      result <- manyTill parseSourceLine eof
      return $ map normalizeHighlighting result

    startingState = SyntaxState {synStContexts = fromList [("Prolog",["normal"])], synStLanguage = "Prolog", synStCurrentLine = "", synStCharsParsedInLine = 0, synStPrevChar = '\n', synStCaseSensitive = True, synStKeywordCaseSensitive = True, synStCaptures = []}

    parseSourceLine = manyTill parseExpressionInternal pEndLine

    pEndLine = do
      newline <|> (eof >> return '\n')
      context <- currentContext
      case context of
        "normal" -> return ()
        "comment" -> (popContext >> return ())
        "string" -> return ()
        "string2" -> return ()
        "comment region" -> return ()
        _ -> return ()
      lineContents <- lookAhead wholeLine
      updateState $ \st -> st { synStCurrentLine = lineContents, synStCharsParsedInLine = 0, synStPrevChar = '\n' }

    withAttribute attr txt = do
      if null txt
         then fail "Parser matched no text"
         else return ()
      let style = fromMaybe "" $ lookup attr styles
      st <- getState
      let oldCharsParsed = synStCharsParsedInLine st
      let prevchar = if null txt then '\n' else last txt
      updateState $ \st -> st { synStCharsParsedInLine = oldCharsParsed + length txt, synStPrevChar = prevchar }
      return (nub [style, attr], txt)

    styles = [("Normal Text","Normal"),("Keyword","Keyword"),("Data Type","DataType"),("Comment","Comment"),("Integer","DecVal"),("Symbol","Normal"),("String","String"),("Identifier","Normal"),("Variable","Others"),("Arithmetic","Keyword")]

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

    list_keywordl = Set.fromList $ words $ "abstract align as and class clauses constants database determ domains elsedef endclass enddef erroneous facts failure global goal if ifdef ifndef implement include language multi nocopy nondeterm object or procedure protected predicates reference single static struct this"
    list_keywordu = Set.fromList $ words $ "ABSTRACT ALIGN AS AND CLASS CLAUSES CONSTANTS DATABASE DETERM DOMAINS ELSEDEF ENDCLASS ENDDEF ERRONEOUS FACTS FAILURE GLOBAL GOAL IF IFDEF IFNDEF IMPLEMENT INCLUDE LANGUAGE MULTI NOCOPY NONDETERM OBJECT OR PROCEDURE PROTECTED PREDICATES REFERENCE SINGLE STATIC STRUCT THIS"
    list_special = Set.fromList $ words $ "assert asserta assertz bound chain_inserta chain_insertafter chain_insertz chain_terms consult db_btrees db_chains fail findall format free msgrecv msgsend nl not readterm ref_term retract retractall save term_bin term_replace term_str trap write writef"
    list_compiler = Set.fromList $ words $ "bgidriver bgifont check_determ code config diagnostics error errorlevel heap gstacksize nobreak nowarnings printermenu project"
    list_arith = Set.fromList $ words $ "mod div abs exp ln log sqrt round trunc val cos sin tan arctan random randominit"
    list_basetype = Set.fromList $ words $ "char real string symbol byte sbyte short ushort word integer unsigned dword long ulong binary ref"
    list_keywords = Set.fromList $ words $ "true false"

    regex_'5bA'2dZ'5f'5d'5bA'2dZa'2dz0'2d9'5f'5d'2a = compileRegex "[A-Z_][A-Za-z0-9_]*"
    regex_'5ba'2dz'5d'5bA'2dZa'2dz0'2d9'5f'5d'2a = compileRegex "[a-z][A-Za-z0-9_]*"

    defaultAttributes = [("normal","Symbol"),("comment","Comment"),("string","String"),("string2","String"),("comment region","Comment")]

    parseRules "normal" =
      do (attr, result) <- (((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_keywordl >>= withAttribute "Keyword"))
                            <|>
                            ((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_keywordu >>= withAttribute "Keyword"))
                            <|>
                            ((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_arith >>= withAttribute "Arithmetic"))
                            <|>
                            ((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_compiler >>= withAttribute "Keyword"))
                            <|>
                            ((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_special >>= withAttribute "Keyword"))
                            <|>
                            ((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_basetype >>= withAttribute "Data Type"))
                            <|>
                            ((pRegExpr regex_'5bA'2dZ'5f'5d'5bA'2dZa'2dz0'2d9'5f'5d'2a >>= withAttribute "Variable"))
                            <|>
                            ((pRegExpr regex_'5ba'2dz'5d'5bA'2dZa'2dz0'2d9'5f'5d'2a >>= withAttribute "Identifier"))
                            <|>
                            ((pDetectChar False '%' >>= withAttribute "Comment") >>~ pushContext "comment")
                            <|>
                            ((pDetect2Chars False '/' '*' >>= withAttribute "Comment") >>~ pushContext "comment region")
                            <|>
                            ((pInt >>= withAttribute "Integer"))
                            <|>
                            ((pDetectChar False '"' >>= withAttribute "String") >>~ pushContext "string")
                            <|>
                            ((pDetectChar False '\'' >>= withAttribute "String") >>~ pushContext "string2")
                            <|>
                            ((pAnyChar "~!^*()-+=[]|\\:;,./?&<>" >>= withAttribute "Symbol")))
         return (attr, result)

    parseRules "comment" =
      pzero

    parseRules "string" =
      do (attr, result) <- ((pDetectChar False '"' >>= withAttribute "String") >>~ (popContext >> return ()))
         return (attr, result)

    parseRules "string2" =
      do (attr, result) <- ((pDetectChar False '\'' >>= withAttribute "String") >>~ (popContext >> return ()))
         return (attr, result)

    parseRules "comment region" =
      do (attr, result) <- ((pDetect2Chars False '*' '/' >>= withAttribute "Comment") >>~ (popContext >> return ()))
         return (attr, result)

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