module Text.Highlighting.Kate.Syntax.Go
(highlight, parseExpression, syntaxName, syntaxExtensions)
where
import Text.Highlighting.Kate.Types
import Text.Highlighting.Kate.Common
import qualified Text.Highlighting.Kate.Syntax.Alert
import Text.ParserCombinators.Parsec hiding (State)
import Control.Monad.State
import Data.Char (isSpace)
import qualified Data.Set as Set
syntaxName :: String
syntaxName = "Go"
syntaxExtensions :: String
syntaxExtensions = "*.go"
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 = [("Go","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
("Go","normal") -> return ()
("Go","Commentar 1") -> (popContext) >> pEndLine
("Go","Commentar 2") -> return ()
("Go","String") -> (popContext) >> pEndLine
("Go","Multiline String") -> 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 chan const continue default defer else fallthrough for func go goto if import interface map package range return select struct switch type var"
list_types = Set.fromList $ words $ "bool byte complex64 complex128 error float32 float64 int int8 int16 int32 int64 rune string uint uintptr uint8 uint16 uint32 uint64"
list_builtin = Set.fromList $ words $ "append cap close complex copy delete imag len make new panic print println real recover"
list_predeclared = Set.fromList $ words $ "false nil true iota"
parseRules ("Go","normal") =
(((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\'\"" list_keywords >>= withAttribute KeywordTok))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\'\"" list_predeclared >>= withAttribute OtherTok))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\'\"" list_types >>= withAttribute DataTypeTok))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\'\"" list_builtin >>= withAttribute FunctionTok))
<|>
((pDetectChar False '{' >>= withAttribute NormalTok))
<|>
((pDetectChar False '}' >>= withAttribute NormalTok))
<|>
((pDetect2Chars False '/' '/' >>= withAttribute CommentTok) >>~ pushContext ("Go","Commentar 1"))
<|>
((pDetect2Chars False '/' '*' >>= withAttribute CommentTok) >>~ pushContext ("Go","Commentar 2"))
<|>
((pHlCOct >>= withAttribute BaseNTok))
<|>
((pHlCHex >>= withAttribute BaseNTok))
<|>
((pHlCChar >>= withAttribute CharTok))
<|>
((pDetectChar False '"' >>= withAttribute StringTok) >>~ pushContext ("Go","String"))
<|>
((pDetectChar False '`' >>= withAttribute StringTok) >>~ pushContext ("Go","Multiline String"))
<|>
((pAnyChar ":!%&()+,-/.*<=>?[]|~^;" >>= withAttribute NormalTok))
<|>
(currentContext >>= \x -> guard (x == ("Go","normal")) >> pDefault >>= withAttribute NormalTok))
parseRules ("Go","Commentar 1") =
(((pLineContinue >>= withAttribute CommentTok))
<|>
((pDetectSpaces >>= withAttribute CommentTok))
<|>
((Text.Highlighting.Kate.Syntax.Alert.parseExpression (Just ("Alerts","")) >>= ((withAttribute CommentTok) . snd)))
<|>
((pDetectIdentifier >>= withAttribute CommentTok))
<|>
(currentContext >>= \x -> guard (x == ("Go","Commentar 1")) >> pDefault >>= withAttribute CommentTok))
parseRules ("Go","Commentar 2") =
(((pDetectSpaces >>= withAttribute CommentTok))
<|>
((pDetect2Chars False '*' '/' >>= withAttribute CommentTok) >>~ (popContext))
<|>
((Text.Highlighting.Kate.Syntax.Alert.parseExpression (Just ("Alerts","")) >>= ((withAttribute CommentTok) . snd)))
<|>
((pDetectIdentifier >>= withAttribute CommentTok))
<|>
(currentContext >>= \x -> guard (x == ("Go","Commentar 2")) >> pDefault >>= withAttribute CommentTok))
parseRules ("Go","String") =
(((pLineContinue >>= withAttribute StringTok))
<|>
((pHlCStringChar >>= withAttribute CharTok))
<|>
((pDetectChar False '"' >>= withAttribute StringTok) >>~ (popContext))
<|>
(currentContext >>= \x -> guard (x == ("Go","String")) >> pDefault >>= withAttribute StringTok))
parseRules ("Go","Multiline String") =
(((pLineContinue >>= withAttribute StringTok))
<|>
((pHlCStringChar >>= withAttribute CharTok))
<|>
((pDetectChar False '`' >>= withAttribute StringTok) >>~ (popContext))
<|>
(currentContext >>= \x -> guard (x == ("Go","Multiline String")) >> pDefault >>= withAttribute StringTok))
parseRules ("Alerts", _) = Text.Highlighting.Kate.Syntax.Alert.parseExpression Nothing
parseRules x = parseRules ("Go","normal") <|> fail ("Unknown context" ++ show x)