module Text.Highlighting.Kate.Syntax.Changelog
(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)
syntaxName :: String
syntaxName = "ChangeLog"
syntaxExtensions :: String
syntaxExtensions = "ChangeLog"
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 = "ChangeLog" }
context <- currentContext <|> (pushContext "Normal" >> currentContext)
result <- parseRules context
optional $ eof >> pEndLine
updateState $ \st -> st { synStLanguage = oldLang }
return result
startingState = SyntaxState {synStContexts = fromList [("ChangeLog",["Normal"])], synStLanguage = "ChangeLog", 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 ()
"line" -> (popContext) >> pEndLine
"entry" -> (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))
regex_'5cd'5cd'5cd'5cd'5cs'2a'2d'5cs'2a'5cd'5cd'5cs'2a'2d'5cs'2a'5cd'5cd'5cs'2a = compileRegex "\\d\\d\\d\\d\\s*-\\s*\\d\\d\\s*-\\s*\\d\\d\\s*"
regex_'28'5cw'5cs'2a'29'2b = compileRegex "(\\w\\s*)+"
regex_'3c'2e'2a'3e'5cs'2a'24 = compileRegex "<.*>\\s*$"
regex_'2e'2a'3a = compileRegex ".*:"
defaultAttributes = [("Normal",NormalTok),("line",NormalTok),("entry",NormalTok)]
parseRules "Normal" =
(((pFirstNonSpace >> pDetectChar False '*' >>= withAttribute DecValTok) >>~ pushContext "entry")
<|>
((pColumn 0 >> pRegExpr regex_'5cd'5cd'5cd'5cd'5cs'2a'2d'5cs'2a'5cd'5cd'5cs'2a'2d'5cs'2a'5cd'5cd'5cs'2a >>= withAttribute DataTypeTok) >>~ pushContext "line"))
parseRules "line" =
(((pRegExpr regex_'28'5cw'5cs'2a'29'2b >>= withAttribute KeywordTok))
<|>
((pRegExpr regex_'3c'2e'2a'3e'5cs'2a'24 >>= withAttribute OtherTok) >>~ (popContext)))
parseRules "entry" =
((pRegExpr regex_'2e'2a'3a >>= withAttribute DecValTok) >>~ (popContext))
parseRules "" = parseRules "Normal"
parseRules x = fail $ "Unknown context" ++ x