module Text.Highlighting.Kate.Syntax.Objectivec
(highlight, parseExpression, syntaxName, syntaxExtensions)
where
import Text.Highlighting.Kate.Types
import Text.Highlighting.Kate.Common
import qualified Text.Highlighting.Kate.Syntax.Doxygen
import Text.ParserCombinators.Parsec hiding (State)
import Control.Monad.State
import Data.Char (isSpace)
import qualified Data.Set as Set
syntaxName :: String
syntaxName = "Objective-C"
syntaxExtensions :: String
syntaxExtensions = "*.m;*.h"
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 = [("Objective-C","Default")], synStLineNumber = 0, synStPrevChar = '\n', synStPrevNonspace = False, synStContinuation = False, synStCaseSensitive = True, synStKeywordCaseSensitive = True, synStCaptures = []}
pEndLine = do
updateState $ \st -> st{ synStPrevNonspace = False }
context <- currentContext
contexts <- synStContexts `fmap` getState
st <- getState
if length contexts >= 2
then case context of
_ | synStContinuation st -> updateState $ \st -> st{ synStContinuation = False }
("Objective-C","Default") -> return ()
("Objective-C","String") -> (popContext) >> pEndLine
("Objective-C","SingleLineComment") -> (popContext) >> pEndLine
("Objective-C","MultiLineComment") -> return ()
("Objective-C","Preprocessor") -> pushContext ("Objective-C","Default") >> return ()
("Objective-C","MultiLineCommentPrep") -> return ()
_ -> 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)
list_keywords = Set.fromList $ words $ "break case continue default do else enum extern for goto if return sizeof struct switch typedef union while @class @defs @encode @end @implementation @interface @private @protected @protocol @public @selector self super"
list_types = Set.fromList $ words $ "auto char const double float int long register short signed static unsigned void volatile"
regex_'23 = compileRegex True "#"
parseRules ("Objective-C","Default") =
(((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_keywords >>= withAttribute KeywordTok))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_types >>= withAttribute DataTypeTok))
<|>
((pDetectChar False '{' >>= withAttribute NormalTok))
<|>
((pDetectChar False '}' >>= withAttribute NormalTok))
<|>
(withChildren (pFloat >>= withAttribute FloatTok) ((pAnyChar "fF" >>= withAttribute FloatTok)))
<|>
((pHlCOct >>= withAttribute BaseNTok))
<|>
((pHlCHex >>= withAttribute BaseNTok))
<|>
(withChildren (pInt >>= withAttribute DecValTok) (((pString False "ULL" >>= withAttribute DecValTok))
<|>
((pString False "LUL" >>= withAttribute DecValTok))
<|>
((pString False "LLU" >>= withAttribute DecValTok))
<|>
((pString False "UL" >>= withAttribute DecValTok))
<|>
((pString False "LU" >>= withAttribute DecValTok))
<|>
((pString False "LL" >>= withAttribute DecValTok))
<|>
((pString False "U" >>= withAttribute DecValTok))
<|>
((pString False "L" >>= withAttribute DecValTok))))
<|>
((pHlCChar >>= withAttribute CharTok))
<|>
((pDetectChar False '"' >>= withAttribute StringTok) >>~ pushContext ("Objective-C","String"))
<|>
((pDetect2Chars False '/' '/' >>= withAttribute CommentTok) >>~ pushContext ("Objective-C","SingleLineComment"))
<|>
((pDetect2Chars False '/' '*' >>= withAttribute CommentTok) >>~ pushContext ("Objective-C","MultiLineComment"))
<|>
((pAnyChar ":!%&()+,-/.*<=>?[]|~^;" >>= withAttribute NormalTok))
<|>
((pColumn 0 >> pRegExpr regex_'23 >>= withAttribute PreprocessorTok) >>~ pushContext ("Objective-C","Preprocessor"))
<|>
((pDetect2Chars False '@' '"' >>= withAttribute StringTok) >>~ pushContext ("Objective-C","String"))
<|>
(currentContext >>= \x -> guard (x == ("Objective-C","Default")) >> pDefault >>= withAttribute NormalTok))
parseRules ("Objective-C","String") =
(((pLineContinue >>= withAttribute StringTok))
<|>
((pHlCStringChar >>= withAttribute SpecialCharTok))
<|>
((pDetectChar False '"' >>= withAttribute StringTok) >>~ (popContext))
<|>
(currentContext >>= \x -> guard (x == ("Objective-C","String")) >> pDefault >>= withAttribute StringTok))
parseRules ("Objective-C","SingleLineComment") =
(currentContext >>= \x -> guard (x == ("Objective-C","SingleLineComment")) >> pDefault >>= withAttribute CommentTok)
parseRules ("Objective-C","MultiLineComment") =
(((pDetect2Chars False '*' '/' >>= withAttribute CommentTok) >>~ (popContext))
<|>
(currentContext >>= \x -> guard (x == ("Objective-C","MultiLineComment")) >> pDefault >>= withAttribute CommentTok))
parseRules ("Objective-C","Preprocessor") =
(((pLineContinue >>= withAttribute PreprocessorTok))
<|>
((pRangeDetect '"' '"' >>= withAttribute ImportTok))
<|>
((pRangeDetect '<' '>' >>= withAttribute ImportTok))
<|>
((Text.Highlighting.Kate.Syntax.Doxygen.parseExpression (Just ("Doxygen","")) >>= ((withAttribute PreprocessorTok) . snd)))
<|>
((pDetect2Chars False '/' '/' >>= withAttribute CommentTok) >>~ pushContext ("Objective-C","SingleLineComment"))
<|>
((pDetect2Chars False '/' '*' >>= withAttribute CommentTok) >>~ pushContext ("Objective-C","MultiLineCommentPrep"))
<|>
(currentContext >>= \x -> guard (x == ("Objective-C","Preprocessor")) >> pDefault >>= withAttribute PreprocessorTok))
parseRules ("Objective-C","MultiLineCommentPrep") =
(((pDetect2Chars False '*' '/' >>= withAttribute CommentTok) >>~ (popContext >> popContext))
<|>
(currentContext >>= \x -> guard (x == ("Objective-C","MultiLineCommentPrep")) >> pDefault >>= withAttribute CommentTok))
parseRules ("Doxygen", _) = Text.Highlighting.Kate.Syntax.Doxygen.parseExpression Nothing
parseRules x = parseRules ("Objective-C","Default") <|> fail ("Unknown context" ++ show x)