module Text.Highlighting.Kate.Syntax.Matlab ( highlight, parseExpression, syntaxName, syntaxExtensions ) where
import Text.Highlighting.Kate.Definitions
import Text.Highlighting.Kate.Common
import Text.ParserCombinators.Parsec
import Control.Monad (when)
import Data.Map (fromList)
import Data.Maybe (fromMaybe, maybeToList)
import qualified Data.Set as Set
syntaxName :: String
syntaxName = "Matlab"
syntaxExtensions :: String
syntaxExtensions = "*.m;*.M"
highlight :: String -> Either String [SourceLine]
highlight input =
case runParser parseSource startingState "source" input of
Left err -> Left $ show err
Right result -> Right result
parseExpression :: GenParser Char SyntaxState LabeledSource
parseExpression = do
st <- getState
let oldLang = synStLanguage st
setState $ st { synStLanguage = "Matlab" }
context <- currentContext <|> (pushContext "_normal" >> currentContext)
result <- parseRules context
updateState $ \st -> st { synStLanguage = oldLang }
return result
parseSource = do
lineContents <- lookAhead wholeLine
updateState $ \st -> st { synStCurrentLine = lineContents }
result <- manyTill parseSourceLine eof
return $ map normalizeHighlighting result
startingState = SyntaxState {synStContexts = fromList [("Matlab",["_normal"])], synStLanguage = "Matlab", synStCurrentLine = "", synStCharsParsedInLine = 0, synStPrevChar = '\n', synStCaseSensitive = True, synStKeywordCaseSensitive = True, synStCaptures = []}
parseSourceLine = manyTill parseExpressionInternal pEndLine
pEndLine = do
lookAhead $ newline <|> (eof >> return '\n')
context <- currentContext
case context of
"_normal" -> (popContext) >> pEndLine
"_adjoint" -> (popContext) >> pEndLine
_ -> pHandleEndLine
withAttribute attr txt = do
when (null txt) $ fail "Parser matched no text"
let labs = attr : maybeToList (lookup attr styles)
st <- getState
let oldCharsParsed = synStCharsParsedInLine st
let prevchar = if null txt then '\n' else last txt
updateState $ \st -> st { synStCharsParsedInLine = oldCharsParsed + length txt, synStPrevChar = prevchar }
return (labs, txt)
styles = [("Number","fl"),("String","st"),("System","bn"),("Incomplete String","ch"),("Comment","co")]
parseExpressionInternal = do
context <- currentContext
parseRules context <|> (pDefault >>= withAttribute (fromMaybe "" $ lookup context defaultAttributes))
list_KeywordsList = Set.fromList $ words $ "break case catch classdef continue else elseif end for function global if otherwise parfor persistent return spmd switch try while methods properties events"
regex_'5ba'2dzA'2dZ'5d'5cw'2a'28'3f'3d'27'29 = compileRegex "[a-zA-Z]\\w*(?=')"
regex_'28'5cd'2b'28'5c'2e'5cd'2b'29'3f'7c'5c'2e'5cd'2b'29'28'5beE'5d'5b'2b'2d'5d'3f'5cd'2b'29'3f'5bij'5d'3f'28'3f'3d'27'29 = compileRegex "(\\d+(\\.\\d+)?|\\.\\d+)([eE][+-]?\\d+)?[ij]?(?=')"
regex_'5b'5c'29'5c'5d'7d'5d'28'3f'3d'27'29 = compileRegex "[\\)\\]}](?=')"
regex_'5c'2e'27'28'3f'3d'27'29 = compileRegex "\\.'(?=')"
regex_'27'5b'5e'27'5d'2a'28'27'27'5b'5e'27'5d'2a'29'2a'27'28'3f'3d'5b'5e'27'5d'7c'24'29 = compileRegex "'[^']*(''[^']*)*'(?=[^']|$)"
regex_'27'5b'5e'27'5d'2a'28'27'27'5b'5e'27'5d'2a'29'2a = compileRegex "'[^']*(''[^']*)*"
regex_'25'2e'2a'24 = compileRegex "%.*$"
regex_'21'2e'2a'24 = compileRegex "!.*$"
regex_'5ba'2dzA'2dZ'5d'5cw'2a = compileRegex "[a-zA-Z]\\w*"
regex_'28'5cd'2b'28'5c'2e'5cd'2b'29'3f'7c'5c'2e'5cd'2b'29'28'5beE'5d'5b'2b'2d'5d'3f'5cd'2b'29'3f'5bij'5d'3f = compileRegex "(\\d+(\\.\\d+)?|\\.\\d+)([eE][+-]?\\d+)?[ij]?"
regex_'27'2b = compileRegex "'+"
defaultAttributes = [("_normal","Normal Text"),("_adjoint","Operator")]
parseRules "_normal" =
do (attr, result) <- (((pRegExpr regex_'5ba'2dzA'2dZ'5d'5cw'2a'28'3f'3d'27'29 >>= withAttribute "Variable") >>~ pushContext "_adjoint")
<|>
((pRegExpr regex_'28'5cd'2b'28'5c'2e'5cd'2b'29'3f'7c'5c'2e'5cd'2b'29'28'5beE'5d'5b'2b'2d'5d'3f'5cd'2b'29'3f'5bij'5d'3f'28'3f'3d'27'29 >>= withAttribute "Number") >>~ pushContext "_adjoint")
<|>
((pRegExpr regex_'5b'5c'29'5c'5d'7d'5d'28'3f'3d'27'29 >>= withAttribute "Delimiter") >>~ pushContext "_adjoint")
<|>
((pRegExpr regex_'5c'2e'27'28'3f'3d'27'29 >>= withAttribute "Operator") >>~ pushContext "_adjoint")
<|>
((pRegExpr regex_'27'5b'5e'27'5d'2a'28'27'27'5b'5e'27'5d'2a'29'2a'27'28'3f'3d'5b'5e'27'5d'7c'24'29 >>= withAttribute "String"))
<|>
((pRegExpr regex_'27'5b'5e'27'5d'2a'28'27'27'5b'5e'27'5d'2a'29'2a >>= withAttribute "Incomplete String"))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_KeywordsList >>= withAttribute "Keyword"))
<|>
((pRegExpr regex_'25'2e'2a'24 >>= withAttribute "Comment"))
<|>
((pRegExpr regex_'21'2e'2a'24 >>= withAttribute "System"))
<|>
((pRegExpr regex_'5ba'2dzA'2dZ'5d'5cw'2a >>= withAttribute "Variable"))
<|>
((pRegExpr regex_'28'5cd'2b'28'5c'2e'5cd'2b'29'3f'7c'5c'2e'5cd'2b'29'28'5beE'5d'5b'2b'2d'5d'3f'5cd'2b'29'3f'5bij'5d'3f >>= withAttribute "Number"))
<|>
((pAnyChar "()[]{}" >>= withAttribute "Delimiter"))
<|>
((pString False "..." >>= withAttribute "Operator"))
<|>
((pString False "==" >>= withAttribute "Operator"))
<|>
((pString False "~=" >>= withAttribute "Operator"))
<|>
((pString False "<=" >>= withAttribute "Operator"))
<|>
((pString False ">=" >>= withAttribute "Operator"))
<|>
((pString False "&&" >>= withAttribute "Operator"))
<|>
((pString False "||" >>= withAttribute "Operator"))
<|>
((pString False ".*" >>= withAttribute "Operator"))
<|>
((pString False ".^" >>= withAttribute "Operator"))
<|>
((pString False "./" >>= withAttribute "Operator"))
<|>
((pString False ".'" >>= withAttribute "Operator"))
<|>
((pAnyChar "*+-/\\&|<>~^=,;:@" >>= withAttribute "Operator")))
return (attr, result)
parseRules "_adjoint" =
do (attr, result) <- ((pRegExpr regex_'27'2b >>= withAttribute "Operator") >>~ (popContext))
return (attr, result)
parseRules "" = parseRules "_normal"
parseRules x = fail $ "Unknown context" ++ x