module Text.Highlighting.Kate.Syntax.Mandoc
(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
syntaxName :: String
syntaxName = "Troff Mandoc"
syntaxExtensions :: String
syntaxExtensions = "*.1;*.2;*.3;*.4;*.5;*.6;*.7;*.8;*.1m;*.3x;*.tmac"
highlight :: String -> [SourceLine]
highlight input = evalState (mapM parseSourceLine $ lines input) startingState
parseSourceLine :: String -> State SyntaxState SourceLine
parseSourceLine = mkParseSourceLine parseExpressionInternal pEndLine
parseExpression :: KateParser Token
parseExpression = do
st <- getState
let oldLang = synStLanguage st
setState $ st { synStLanguage = "Troff Mandoc" }
context <- currentContext <|> (pushContext "Normal" >> currentContext)
result <- parseRules context
optional $ eof >> pEndLine
updateState $ \st -> st { synStLanguage = oldLang }
return result
startingState = SyntaxState {synStContexts = fromList [("Troff Mandoc",["Normal"])], synStLanguage = "Troff Mandoc", synStLineNumber = 0, synStPrevChar = '\n', synStPrevNonspace = False, synStCaseSensitive = True, synStKeywordCaseSensitive = True, synStCaptures = []}
pEndLine = do
updateState $ \st -> st{ synStPrevNonspace = False }
context <- currentContext
case context of
"Normal" -> return ()
"DetectDirective" -> (popContext) >> pEndLine
"Directive" -> (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_headings = Set.fromList $ words $ "SH SS TH"
list_paragraph = Set.fromList $ words $ "HP IP LP P PD PP RE RS TP"
list_formatting = Set.fromList $ words $ "B BI BR I IB IR RB RI SM SB"
list_others = Set.fromList $ words $ "DT"
defaultAttributes = [("Normal",NormalTok),("DetectDirective",FunctionTok),("Directive",StringTok)]
parseRules "Normal" =
(((parseRules "DetectComments##Roff"))
<|>
((pColumn 0 >> pDetectChar False '.' >>= withAttribute FunctionTok) >>~ pushContext "DetectDirective")
<|>
((parseRules "DetectOthers##Roff")))
parseRules "DetectDirective" =
(((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_headings >>= withAttribute KeywordTok) >>~ pushContext "Directive")
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_paragraph >>= withAttribute DataTypeTok) >>~ pushContext "Directive")
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_formatting >>= withAttribute KeywordTok) >>~ pushContext "Directive")
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_others >>= withAttribute FunctionTok) >>~ pushContext "Directive")
<|>
((parseRules "DetectDirective##Roff")))
parseRules "Directive" =
((parseRules "Directive##Roff"))
parseRules "" = parseRules "Normal"
parseRules x = fail $ "Unknown context" ++ x