module Text.Highlighting.Kate.Syntax.Pure
(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)
import qualified Data.Set as Set
syntaxName :: String
syntaxName = "Pure"
syntaxExtensions :: String
syntaxExtensions = "*.pure"
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 = [("Pure","Normal")], 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 }
("Pure","Normal") -> return ()
("Pure","String") -> (popContext) >> pEndLine
("Pure","Region Marker") -> (popContext) >> pEndLine
("Pure","Comment1") -> return ()
("Pure","Comment2") -> (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)
list_blockstarters = Set.fromList $ words $ "case when with"
list_blockenders = Set.fromList $ words $ "end"
list_keywords = Set.fromList $ words $ "const def else extern if infix infixl infixr interface let namespace nonfix of otherwise outfix postfix prefix private public then type using"
list_special = Set.fromList $ words $ "catch throw __break__ __trace__"
list_types = Set.fromList $ words $ "bigint bool char float double expr short int long string pointer void int8 int16 int32 int64 matrix dmatrix cmatrix imatrix smatrix nmatrix"
regex_'5bA'2dZa'2dz'5f'5d'5bA'2dZa'2dz0'2d9'5f'5d'2a = compileRegex True "[A-Za-z_][A-Za-z0-9_]*"
regex_0x'5bA'2dZa'2dz0'2d9'5d'2b = compileRegex True "0x[A-Za-z0-9]+"
parseRules ("Pure","Normal") =
(((pDetectSpaces >>= withAttribute NormalTok))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_blockstarters >>= withAttribute KeywordTok))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_blockenders >>= withAttribute KeywordTok))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_keywords >>= withAttribute KeywordTok))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_special >>= withAttribute FunctionTok))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_types >>= withAttribute DataTypeTok))
<|>
((pRegExpr regex_'5bA'2dZa'2dz'5f'5d'5bA'2dZa'2dz0'2d9'5f'5d'2a >>= withAttribute NormalTok))
<|>
((pRegExpr regex_0x'5bA'2dZa'2dz0'2d9'5d'2b >>= withAttribute DecValTok))
<|>
((pFloat >>= withAttribute DecValTok))
<|>
((pInt >>= withAttribute DecValTok))
<|>
((pHlCChar >>= withAttribute NormalTok))
<|>
((pDetectChar False '"' >>= withAttribute StringTok) >>~ pushContext ("Pure","String"))
<|>
((pDetect2Chars False '/' '*' >>= withAttribute CommentTok) >>~ pushContext ("Pure","Comment1"))
<|>
((pDetect2Chars False '/' '/' >>= withAttribute CommentTok) >>~ pushContext ("Pure","Comment2"))
<|>
(currentContext >>= \x -> guard (x == ("Pure","Normal")) >> pDefault >>= withAttribute NormalTok))
parseRules ("Pure","String") =
(((pLineContinue >>= withAttribute StringTok))
<|>
((pHlCStringChar >>= withAttribute CharTok))
<|>
((pDetectChar False '"' >>= withAttribute StringTok) >>~ (popContext))
<|>
(currentContext >>= \x -> guard (x == ("Pure","String")) >> pDefault >>= withAttribute StringTok))
parseRules ("Pure","Region Marker") =
(currentContext >>= \x -> guard (x == ("Pure","Region Marker")) >> pDefault >>= withAttribute NormalTok)
parseRules ("Pure","Comment1") =
(((pDetect2Chars False '*' '/' >>= withAttribute CommentTok) >>~ (popContext))
<|>
(currentContext >>= \x -> guard (x == ("Pure","Comment1")) >> pDefault >>= withAttribute CommentTok))
parseRules ("Pure","Comment2") =
(currentContext >>= \x -> guard (x == ("Pure","Comment2")) >> pDefault >>= withAttribute CommentTok)
parseRules x = parseRules ("Pure","Normal") <|> fail ("Unknown context" ++ show x)