module Text.Highlighting.Kate.Syntax.Gdb ( 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)
syntaxName :: String
syntaxName = "GDB Backtrace"
syntaxExtensions :: String
syntaxExtensions = "*.kcrash;*.crash;*.bt"
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 = "GDB Backtrace" }
context <- currentContext <|> (pushContext "apache" >> 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 [("GDB Backtrace",["apache"])], synStLanguage = "GDB Backtrace", 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
"apache" -> return () >> pHandleEndLine
"oneliners" -> (popContext) >> pEndLine
"stackframe" -> return () >> pHandleEndLine
"identifier" -> return () >> pHandleEndLine
"file" -> (popContext >> popContext) >> pEndLine
"thread" -> (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 = [("Crash","er"),("QualifiedIdentifier","ot"),("Function","fu"),("File","dt"),("Thread","bn")]
parseExpressionInternal = do
context <- currentContext
parseRules context <|> (pDefault >>= withAttribute (fromMaybe "" $ lookup context defaultAttributes))
regex_'28'28'3f'3a'5b'5e_'5d'7c'3c'2e'2b'3e'29'2b'3a'3a'29'3f'28'5b'5e_'3a'5d'2b'29'5cs'2a'5c'28 = compileRegex "((?:[^ ]|<.+>)+::)?([^ :]+)\\s*\\("
regex_'5cb0x0'5cb = compileRegex "\\b0x0\\b"
defaultAttributes = [("apache","Normal"),("oneliners","Normal"),("stackframe","Normal"),("identifier","Normal"),("file","File"),("thread","Thread")]
parseRules "apache" =
do (attr, result) <- (((pFirstNonSpace >> pDetectChar False '#' >>= withAttribute "Normal") >>~ pushContext "stackframe")
<|>
((parseRules "oneliners")))
return (attr, result)
parseRules "oneliners" =
do (attr, result) <- (((pString False "[KCrash Handler]" >>= withAttribute "Crash"))
<|>
((pFirstNonSpace >> pString False "Thread" >>= withAttribute "Normal") >>~ pushContext "thread")
<|>
((pFirstNonSpace >> pString False "[Current thread" >>= withAttribute "Normal") >>~ pushContext "thread"))
return (attr, result)
parseRules "stackframe" =
do (attr, result) <- (((lookAhead (pRegExpr regex_'28'28'3f'3a'5b'5e_'5d'7c'3c'2e'2b'3e'29'2b'3a'3a'29'3f'28'5b'5e_'3a'5d'2b'29'5cs'2a'5c'28) >> return ([],"") ) >>~ pushContext "identifier")
<|>
((pString False "at" >>= withAttribute "Normal") >>~ pushContext "file")
<|>
((pString False "from" >>= withAttribute "Normal") >>~ pushContext "file")
<|>
((parseRules "oneliners")))
return (attr, result)
parseRules "identifier" =
do (attr, result) <- (((pString True "%1" >>= withAttribute "QualifiedIdentifier"))
<|>
((pString True "%2" >>= withAttribute "Function"))
<|>
((pRegExpr regex_'5cb0x0'5cb >>= withAttribute "Crash"))
<|>
((pDetectChar False ')' >>= withAttribute "Normal") >>~ (popContext)))
return (attr, result)
parseRules "file" =
do (attr, result) <- ((pDetectChar False ':' >>= withAttribute "Normal") >>~ (popContext >> popContext))
return (attr, result)
parseRules "thread" =
pzero
parseRules "" = parseRules "apache"
parseRules x = fail $ "Unknown context" ++ x