module Text.Highlighting.Kate.Syntax.Haxe ( 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 = "Haxe"
syntaxExtensions :: String
syntaxExtensions = "*.hx;*.Hx;*.hX;*.HX;"
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 = "Haxe" }
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 [("Haxe",["normal"])], synStLanguage = "Haxe", 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" -> return () >> pHandleEndLine
"ModuleName" -> return () >> pHandleEndLine
"RawString" -> return () >> pHandleEndLine
"String" -> return () >> pHandleEndLine
"CommentLine" -> (popContext) >> pEndLine
"CommentBlock" -> return () >> pHandleEndLine
_ -> 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 = [("Keyword","kw"),("Type","dt"),("Integer","dv"),("Hex","bn"),("Float","fl"),("Module","kw"),("EscapeSequence","st"),("String","st"),("RawString","st"),("Comment","co"),("Preprocessor","ot")]
parseExpressionInternal = do
context <- currentContext
parseRules context <|> (pDefault >>= withAttribute (fromMaybe "" $ lookup context defaultAttributes))
list_keywords = Set.fromList $ words $ "break case cast catch class continue default else enum extends false for function if implements in inline interface new null override private public return static super switch this throw trace true try typedef untyped var while"
list_modules = Set.fromList $ words $ "package import"
list_types = Set.fromList $ words $ "Array Void Bool Int UInt Float Dynamic String List Error Unknown Type"
regex_'23if'28'5cs'2b'5cw'2b'29'3f = compileRegex "#if(\\s+\\w+)?"
regex_'23'28else'7celseif'7cend'7cerror'29 = compileRegex "#(else|elseif|end|error)"
regex_'5b'5cd'5d'5b'5cd'5d'2a'28'5c'2e'28'3f'21'5c'2e'29'5b'5cd'5d'2a'28'5beE'5d'5b'2d'2b'5d'3f'5b'5cd'5d'2b'29'3f'29 = compileRegex "[\\d][\\d]*(\\.(?!\\.)[\\d]*([eE][-+]?[\\d]+)?)"
regex_'5c'2e'5b'5cd'5d'5b'5cd'5d'2a'28'5beE'5d'5b'2d'2b'5d'3f'5b'5cd'5d'2b'29'3f = compileRegex "\\.[\\d][\\d]*([eE][-+]?[\\d]+)?"
regex_0'5bxX'5d'5b'5cda'2dfA'2dF'5d'2b = compileRegex "0[xX][\\da-fA-F]+"
regex_'5cd'2b = compileRegex "\\d+"
regex_'5b'5e'5cs'5cw'2e'3a'2c'5d = compileRegex "[^\\s\\w.:,]"
regex_'5c'5c'28u'5b'5cda'2dfA'2dF'5d'7b4'7d'7cU'5b'5cda'2dfA'2dF'5d'7b8'7d'7c'26'5ba'2dzA'2dZ'5d'5cw'2b'3b'29 = compileRegex "\\\\(u[\\da-fA-F]{4}|U[\\da-fA-F]{8}|&[a-zA-Z]\\w+;)"
defaultAttributes = [("normal","Normal Text"),("ModuleName","Module Name"),("RawString","RawString"),("String","String"),("CommentLine","Comment"),("CommentBlock","Comment")]
parseRules "normal" =
do (attr, result) <- (((pRegExpr regex_'23if'28'5cs'2b'5cw'2b'29'3f >>= withAttribute "Preprocessor") >>~ (popContext))
<|>
((pRegExpr regex_'23'28else'7celseif'7cend'7cerror'29 >>= withAttribute "Preprocessor") >>~ (popContext))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_keywords >>= withAttribute "Keyword"))
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_modules >>= withAttribute "Module") >>~ pushContext "ModuleName")
<|>
((pKeyword " \n\t.():!+,-<=>%&*/;?[]^{|}~\\" list_types >>= withAttribute "Type"))
<|>
((pDetectIdentifier >>= withAttribute "Normal Text"))
<|>
((pHlCStringChar >>= withAttribute "EscapeString") >>~ (popContext))
<|>
((pDetectChar False '\'' >>= withAttribute "RawString") >>~ pushContext "RawString")
<|>
((pDetectChar False '"' >>= withAttribute "String") >>~ pushContext "String")
<|>
((pDetect2Chars False '/' '/' >>= withAttribute "Comment") >>~ pushContext "CommentLine")
<|>
((pDetect2Chars False '/' '*' >>= withAttribute "Comment") >>~ pushContext "CommentBlock")
<|>
((pDetectChar False '{' >>= withAttribute "Normal Text"))
<|>
((pDetectChar False '}' >>= withAttribute "Normal Text"))
<|>
((pString False "..." >>= withAttribute "Normal Text") >>~ (popContext))
<|>
((pDetect2Chars False '.' '.' >>= withAttribute "Normal Text"))
<|>
((pRegExpr regex_'5b'5cd'5d'5b'5cd'5d'2a'28'5c'2e'28'3f'21'5c'2e'29'5b'5cd'5d'2a'28'5beE'5d'5b'2d'2b'5d'3f'5b'5cd'5d'2b'29'3f'29 >>= withAttribute "Float") >>~ (popContext))
<|>
((pRegExpr regex_'5c'2e'5b'5cd'5d'5b'5cd'5d'2a'28'5beE'5d'5b'2d'2b'5d'3f'5b'5cd'5d'2b'29'3f >>= withAttribute "Float") >>~ (popContext))
<|>
((pRegExpr regex_0'5bxX'5d'5b'5cda'2dfA'2dF'5d'2b >>= withAttribute "Hex") >>~ (popContext))
<|>
((pRegExpr regex_'5cd'2b >>= withAttribute "Integer") >>~ (popContext)))
return (attr, result)
parseRules "ModuleName" =
do (attr, result) <- (((pDetect2Chars False '/' '/' >>= withAttribute "Comment") >>~ pushContext "CommentLine")
<|>
((pDetect2Chars False '/' '*' >>= withAttribute "Comment") >>~ pushContext "CommentBlock")
<|>
((pRegExpr regex_'5b'5e'5cs'5cw'2e'3a'2c'5d >>= withAttribute "Module Name") >>~ (popContext)))
return (attr, result)
parseRules "RawString" =
do (attr, result) <- ((pDetectChar False '\'' >>= withAttribute "RawString") >>~ (popContext))
return (attr, result)
parseRules "String" =
do (attr, result) <- (((pDetect2Chars False '\\' '"' >>= withAttribute "String"))
<|>
((pDetectChar False '"' >>= withAttribute "String") >>~ (popContext))
<|>
((pHlCStringChar >>= withAttribute "EscapeSequence"))
<|>
((pRegExpr regex_'5c'5c'28u'5b'5cda'2dfA'2dF'5d'7b4'7d'7cU'5b'5cda'2dfA'2dF'5d'7b8'7d'7c'26'5ba'2dzA'2dZ'5d'5cw'2b'3b'29 >>= withAttribute "EscapeSequence")))
return (attr, result)
parseRules "CommentLine" =
pzero
parseRules "CommentBlock" =
do (attr, result) <- ((pDetect2Chars False '*' '/' >>= withAttribute "Comment") >>~ (popContext))
return (attr, result)
parseRules "" = parseRules "normal"
parseRules x = fail $ "Unknown context" ++ x