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 Control.Monad.State
import Data.Char (isSpace)
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 (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 = [("ChangeLog","Normal")], synStLineNumber = 0, synStPrevChar = '\n', synStPrevNonspace = False, synStCaseSensitive = True, synStKeywordCaseSensitive = True, synStCaptures = []}
pEndLine = do
updateState $ \st -> st{ synStPrevNonspace = False }
context <- currentContext
contexts <- synStContexts `fmap` getState
if length contexts >= 2
then case context of
("ChangeLog","Normal") -> return ()
("ChangeLog","line") -> (popContext) >> pEndLine
("ChangeLog","entry") -> (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)
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 ".*:"
parseRules ("ChangeLog","Normal") =
(((pFirstNonSpace >> pDetectChar False '*' >>= withAttribute DecValTok) >>~ pushContext ("ChangeLog","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 ("ChangeLog","line"))
<|>
(currentContext >>= \x -> guard (x == ("ChangeLog","Normal")) >> pDefault >>= withAttribute NormalTok))
parseRules ("ChangeLog","line") =
(((pRegExpr regex_'28'5cw'5cs'2a'29'2b >>= withAttribute KeywordTok))
<|>
((pRegExpr regex_'3c'2e'2a'3e'5cs'2a'24 >>= withAttribute OtherTok) >>~ (popContext))
<|>
(currentContext >>= \x -> guard (x == ("ChangeLog","line")) >> pDefault >>= withAttribute NormalTok))
parseRules ("ChangeLog","entry") =
(((pRegExpr regex_'2e'2a'3a >>= withAttribute DecValTok) >>~ (popContext))
<|>
(currentContext >>= \x -> guard (x == ("ChangeLog","entry")) >> pDefault >>= withAttribute NormalTok))
parseRules x = parseRules ("ChangeLog","Normal") <|> fail ("Unknown context" ++ show x)