Files
tricu/src/REPL.hs

605 lines
25 KiB
Haskell

module REPL where
import Eval
import FileEval
import Lexer
import Parser
import Research
import ContentStore
import Control.Concurrent (forkIO, threadDelay, killThread, ThreadId)
import Control.Monad (forever, void, when, forM, forM_, foldM, unless)
import Data.ByteString (ByteString)
import Data.Maybe (isNothing, isJust, fromJust, catMaybes)
import Database.SQLite.Simple (Connection, Only(..), query, query_, execute, execute_, open)
import System.Directory (doesFileExist, createDirectoryIfMissing)
import System.FSNotify
import System.FilePath (takeDirectory, (</>))
import Text.Read (readMaybe)
import Control.Exception (IOException, SomeException, catch
, displayException)
import Control.Monad (forM_)
import Control.Monad.Catch (handle, MonadCatch)
import Control.Monad.IO.Class (liftIO)
import Control.Monad.Trans.Class (lift)
import Control.Monad.Trans.Maybe (MaybeT(..), runMaybeT)
import Data.Char (isSpace, isUpper)
import Data.List ((\\), dropWhile, dropWhileEnd, isPrefixOf, nub, sortBy, groupBy, intercalate, find)
import Data.Version (showVersion)
import Paths_tricu (version)
import System.Console.Haskeline
import System.Console.ANSI (setSGR, SGR(..), ConsoleLayer(..), ColorIntensity(..),
Color(..), ConsoleIntensity(..), clearFromCursorToLineEnd)
import qualified Data.Map as Map
import qualified Data.Text as T
import qualified Data.Text.IO as T
import Control.Concurrent (forkIO, threadDelay)
import Data.IORef (IORef, newIORef, readIORef, writeIORef)
import Data.Time (UTCTime, getCurrentTime, diffUTCTime)
import Control.Concurrent.MVar (MVar, newMVar, putMVar, takeMVar)
import Data.Time.Format (formatTime, defaultTimeLocale)
import Data.Time.Clock.POSIX (posixSecondsToUTCTime)
data REPLState = REPLState
{ replForm :: EvaluatedForm
, replContentStore :: Maybe Connection
, replWatchedFile :: Maybe FilePath
, replSelectedVersions :: Map.Map String T.Text
, replWatcherThread :: Maybe ThreadId
}
repl :: IO ()
repl = do
conn <- ContentStore.initContentStore
runInputT settings (withInterrupt (loop (REPLState Decode (Just conn) Nothing Map.empty Nothing)))
where
settings :: Settings IO
settings = Settings
{ complete = completeWord Nothing " \t" completeCommands
, historyFile = Just "~/.local/state/tricu/history"
, autoAddHistory = True
}
completeCommands :: String -> IO [Completion]
completeCommands str = return $ map simpleCompletion $
filter (str `isPrefixOf`) commands
where
commands = [ "!exit"
, "!output"
, "!import"
, "!clear"
, "!reset"
, "!help"
, "!definitions"
, "!watch"
, "!refresh"
, "!versions"
, "!select"
, "!tag"
]
loop :: REPLState -> InputT IO ()
loop state = handle (\Interrupt -> interruptHandler state Interrupt) $ do
minput <- getInputLine "tricu < "
case minput of
Nothing -> return ()
Just s
| strip s == "" -> loop state
| strip s == "!exit" -> outputStrLn "Exiting tricu"
| strip s == "!clear" -> do
liftIO $ putStr "\ESC[2J\ESC[H"
loop state
| strip s == "!reset" -> do
outputStrLn "Selected versions reset"
loop state { replSelectedVersions = Map.empty }
| strip s == "!help" -> do
outputStrLn $ "tricu version " ++ showVersion version
outputStrLn "Available commands:"
outputStrLn " !exit - Exit the REPL"
outputStrLn " !clear - Clear the screen"
outputStrLn " !reset - Reset preferences for selected versions"
outputStrLn " !help - Show tricu version and available commands"
outputStrLn " !output - Change output format (tree|fsl|ast|ternary|ascii|decode)"
outputStrLn " !definitions - List all defined terms in the content store"
outputStrLn " !import - Import definitions from file to the content store"
outputStrLn " !watch - Watch a file for changes, evaluate terms, and store them"
outputStrLn " !versions - Show all versions of a term by name"
outputStrLn " !select - Select a specific version of a term for subsequent lookups"
outputStrLn " !tag - Add or update a tag for a term by hash or name"
loop state
| strip s == "!output" -> handleOutput state
| strip s == "!definitions" -> handleDefinitions state
| "!import" `isPrefixOf` strip s -> handleImport state
| "!watch" `isPrefixOf` strip s -> handleWatch state
| strip s == "!refresh" -> handleRefresh state
| "!versions" `isPrefixOf` strip s -> handleVersions state
| "!select" `isPrefixOf` strip s -> handleSelect state
| "!tag" `isPrefixOf` strip s -> handleTag state
| take 2 s == "--" -> loop state
| otherwise -> do
result <- liftIO $ catch
(processInput state s)
(errorHandler state)
loop result
handleOutput :: REPLState -> InputT IO ()
handleOutput state = do
let formats = [Decode, TreeCalculus, FSL, AST, Ternary, Ascii]
outputStrLn "Available output formats:"
mapM_ (\(i, f) -> outputStrLn $ show i ++ ". " ++ show f)
(zip [1..] formats)
result <- runMaybeT $ do
input <- MaybeT $ getInputLine "Select output format (1-6) < "
case reads input of
[(n, "")] | n >= 1 && n <= 6 ->
return $ formats !! (n-1)
_ -> MaybeT $ return Nothing
case result of
Nothing -> do
outputStrLn "Invalid selection. Keeping current output format."
loop state
Just newForm -> do
outputStrLn $ "Output format changed to: " ++ show newForm
loop state { replForm = newForm }
handleDefinitions :: REPLState -> InputT IO ()
handleDefinitions state = case replContentStore state of
Nothing -> do
liftIO $ printError "Content store not initialized"
loop state
Just conn -> do
terms <- liftIO $ ContentStore.listStoredTerms conn
if null terms
then do
liftIO $ printWarning "No terms in content store."
loop state
else do
liftIO $ do
printSuccess $ "Content store contains " ++ show (length terms) ++ " terms:"
let maxNameWidth = maximum $ map (length . T.unpack . termNames) terms
forM_ terms $ \term -> do
let namesStr = T.unpack (termNames term)
hash = termHash term
padding = replicate (maxNameWidth - length namesStr) ' '
liftIO $ do
putStr " "
printVariable namesStr
putStr padding
putStr " [hash: "
displayColoredHash hash
putStrLn "]"
tags <- ContentStore.termToTags conn hash
unless (null tags) $ displayTags tags
loop state
handleImport :: REPLState -> InputT IO ()
handleImport state = do
let fset = setComplete completeFilename defaultSettings
filename <- runInputT fset $ getInputLineWithInitial "File to import: " ("", "")
case filename of
Nothing -> loop state
Just f -> do
let cleanFilename = strip f
exists <- liftIO $ doesFileExist cleanFilename
if not exists
then do
liftIO $ printError $ "File not found: " ++ cleanFilename
loop state
else importFile state cleanFilename
importFile :: REPLState -> String -> InputT IO ()
importFile state cleanFilename = do
code <- liftIO $ readFile cleanFilename
case replContentStore state of
Nothing -> do
liftIO $ printError "Content store not initialized"
loop state
Just conn -> do
env <- liftIO $ evaluateFile cleanFilename
liftIO $ do
printSuccess $ "Importing file: " ++ cleanFilename
let defs = Map.toList $ Map.delete "!result" env
importedCount <- foldM (\count (name, term) -> do
hash <- ContentStore.storeTerm conn [name] term
printSuccess $ "Stored definition: " ++ name ++ " with hash " ++ T.unpack hash
return (count + 1)
) 0 defs
printSuccess $ "Imported " ++ show importedCount ++ " definitions successfully"
loop state
handleWatch :: REPLState -> InputT IO ()
handleWatch state = do
dbPath <- liftIO ContentStore.getContentStorePath
let filepath = takeDirectory dbPath </> "scratch.tri"
let dirPath = takeDirectory filepath
liftIO $ createDirectoryIfMissing True dirPath
fileExists <- liftIO $ doesFileExist filepath
unless fileExists $ liftIO $ writeFile filepath "-- tricu scratch file\n\n"
outputStrLn $ "Using scratch file: " ++ filepath
when (isJust (replWatcherThread state)) $ do
outputStrLn "Stopping previous file watch"
liftIO $ killThread (fromJust $ replWatcherThread state)
outputStrLn $ "Starting to watch file: " ++ filepath
outputStrLn "Press Ctrl+C to stop watching and return to REPL"
liftIO $ processWatchedFile filepath (replContentStore state) (replSelectedVersions state) (replForm state)
lastProcessedRef <- liftIO $ newIORef =<< getCurrentTime
watcherId <- liftIO $ forkIO $ withManager $ \mgr -> do
stopAction <- watchDir mgr dirPath (\event -> eventPath event == filepath) $ \event -> do
now <- getCurrentTime
lastProcessed <- readIORef lastProcessedRef
when (diffUTCTime now lastProcessed > 0.5) $ do
putStrLn $ "\nFile changed: " ++ filepath
processWatchedFile filepath (replContentStore state) (replSelectedVersions state) (replForm state)
writeIORef lastProcessedRef now
forever $ threadDelay 1000000
watchLoop state { replWatchedFile = Just filepath, replWatcherThread = Just watcherId }
handleUnwatch :: REPLState -> InputT IO ()
handleUnwatch state = case replWatchedFile state of
Nothing -> do
outputStrLn "No file is currently being watched"
loop state
Just path -> do
outputStrLn $ "Stopped watching " ++ path
when (isJust (replWatcherThread state)) $ do
liftIO $ killThread (fromJust $ replWatcherThread state)
loop state { replWatchedFile = Nothing, replWatcherThread = Nothing }
handleRefresh :: REPLState -> InputT IO ()
handleRefresh state = case replContentStore state of
Nothing -> do
outputStrLn "Content store not initialized"
loop state
Just conn -> do
outputStrLn "Environment refreshed from content store (definitions are live)"
loop state
handleVersions :: REPLState -> InputT IO ()
handleVersions state = case replContentStore state of
Nothing -> do
liftIO $ printError "Content store not initialized"
loop state
Just conn -> do
liftIO $ printPrompt "Term name: "
nameInput <- getInputLine ""
case nameInput of
Nothing -> loop state
Just n -> do
let termName = strip n
versions <- liftIO $ ContentStore.termVersions conn termName
if null versions
then liftIO $ printError $ "No versions found for term: " ++ termName
else do
liftIO $ do
printKeyword "Versions of "
printVariable termName
putStrLn ":"
forM_ (zip [1..] versions) $ \(i, (hash, _, ts)) -> do
tags <- ContentStore.termToTags conn hash
putStr $ show (i :: Int) ++ ". "
displayColoredHash hash
putStr $ " (" ++ formatTimestamp ts ++ ")"
unless (null tags) $ do
putStr " ["
printKeyword "Tags: "
forM_ (zip [0..] tags) $ \(j, tag) -> do
printTag (T.unpack tag)
when (j < length tags - 1) $ putStr ", "
putStr "]"
putStrLn ""
loop state
handleSelect :: REPLState -> InputT IO ()
handleSelect state = case replContentStore state of
Nothing -> do
liftIO $ printError "Content store not initialized"
loop state
Just conn -> do
liftIO $ printPrompt "Term name: "
nameInput <- getInputLine ""
case nameInput of
Nothing -> loop state
Just n -> do
let cleanName = strip n
versions <- liftIO $ ContentStore.termVersions conn cleanName
if null versions
then do
liftIO $ printError $ "No versions found for term: " ++ cleanName
loop state
else do
liftIO $ do
printKeyword "Versions of "
printVariable cleanName
putStrLn ":"
forM_ (zip [1..] versions) $ \(i, (hash, _, ts)) -> do
tags <- ContentStore.termToTags conn hash
putStr $ show (i :: Int) ++ ". "
displayColoredHash hash
putStr $ " (" ++ formatTimestamp ts ++ ")"
unless (null tags) $ do
putStr " ["
printKeyword "Tags: "
forM_ (zip [0..] tags) $ \(j, tag) -> do
printTag (T.unpack tag)
when (j < length tags - 1) $ putStr ", "
putStr "]"
putStrLn ""
liftIO $ printPrompt "Select version (number or full hash, Enter to cancel): "
choiceInput <- getInputLine ""
let choice = strip <$> choiceInput
selectedHash <- case choice of
Just selectedStr | not (null selectedStr) -> do
case readMaybe selectedStr :: Maybe Int of
Just idx | idx > 0 && idx <= length versions -> do
let (h, _, _) = versions !! (idx - 1)
return $ Just h
_ -> do
let potentialHash = T.pack selectedStr
let foundByHash = find (\(h, _, _) -> T.isPrefixOf potentialHash h) versions
case foundByHash of
Just (h, _, _) -> return $ Just h
Nothing -> do
liftIO $ printError "Invalid selection or hash not found in list."
return Nothing
_ -> return Nothing
case selectedHash of
Just hashToSelect -> do
let newState = state { replSelectedVersions =
Map.insert cleanName hashToSelect (replSelectedVersions state) }
liftIO $ do
printSuccess "Selected version "
displayColoredHash hashToSelect
putStr " for term "
printVariable cleanName
putStrLn ""
loop newState
Nothing -> loop state
handleTag :: REPLState -> InputT IO ()
handleTag state = case replContentStore state of
Nothing -> do
liftIO $ printError "Content store not initialized"
loop state
Just conn -> do
liftIO $ printPrompt "Term hash (full or prefix) or name (most recent version will be used): "
identInput <- getInputLine ""
case identInput of
Nothing -> loop state
Just ident -> do
let cleanIdent = strip ident
mFullHash <- liftIO $ resolveIdentifierToHash conn cleanIdent
case mFullHash of
Nothing -> do
liftIO $ printError $ "Could not resolve identifier: " ++ cleanIdent
loop state
Just fullHash -> do
liftIO $ do
putStr "Tagging term with hash: "
displayColoredHash fullHash
putStrLn ""
tags <- liftIO $ ContentStore.termToTags conn fullHash
unless (null tags) $ do
liftIO $ do
printKeyword "Existing tags:"
displayTags tags
liftIO $ printPrompt "Tag to add/set: "
tagValueInput <- getInputLine ""
case tagValueInput of
Nothing -> loop state
Just tv -> do
let tagVal = T.pack (strip tv)
liftIO $ do
ContentStore.setTag conn fullHash tagVal
printSuccess $ "Tag '"
printTag (T.unpack tagVal)
putStr "' set for term with hash "
displayColoredHash fullHash
putStrLn ""
loop state
resolveIdentifierToHash :: Connection -> String -> IO (Maybe T.Text)
resolveIdentifierToHash conn ident
| T.pack "#" `T.isInfixOf` T.pack ident = do
let hashPrefix = T.pack ident
matchingHashes <- liftIO $ query conn "SELECT hash FROM terms WHERE hash LIKE ?" (Only (hashPrefix <> "%")) :: IO [Only T.Text]
case matchingHashes of
[Only fullHash] -> return $ Just fullHash
[] -> do printError $ "No hash found starting with: " ++ T.unpack hashPrefix; return Nothing
_ -> do printError $ "Ambiguous hash prefix: " ++ T.unpack hashPrefix; return Nothing
| otherwise = do
versions <- ContentStore.termVersions conn ident
if null versions
then do printError $ "No versions found for term name: " ++ ident; return Nothing
else return $ Just $ (\(h,_,_) -> h) $ head versions
interruptHandler :: REPLState -> Interrupt -> InputT IO ()
interruptHandler state _ = do
liftIO $ do
printWarning "Interrupted with CTRL+C"
printWarning "You can use the !exit command or CTRL+D to exit"
loop state
errorHandler :: REPLState -> SomeException -> IO REPLState
errorHandler state e = do
printError $ "Error: " ++ displayException e
return state
processInput :: REPLState -> String -> IO REPLState
processInput state input = do
let asts = parseTricu input
case asts of
[] -> return state
_ -> case replContentStore state of
Nothing -> do
printError "Content store not initialized"
return state
Just conn -> do
newState <- foldM (\s astNode -> do
let varsInAst = Eval.findVarNames astNode
foldM (\currentSelectionState varName ->
if Map.member varName (replSelectedVersions currentSelectionState)
then return currentSelectionState
else do
versions <- ContentStore.termVersions conn varName
if length versions > 1
then do
let (latestHash, _, _) = head versions
liftIO $ printWarning $ "Multiple versions of '" ++ varName ++ "' found. Using most recent."
return currentSelectionState { replSelectedVersions = Map.insert varName latestHash (replSelectedVersions currentSelectionState) }
else return currentSelectionState
) s varsInAst
) state asts
forM_ asts $ \ast -> do
case ast of
SDef name [] body -> do
result <- evalAST (Just conn) (replSelectedVersions newState) body
hash <- ContentStore.storeTerm conn [name] result
liftIO $ do
putStr "tricu > "
printSuccess "Stored definition: "
printVariable name
putStr " with hash "
displayColoredHash hash
putStrLn ""
putStr "tricu > "
printResult $ formatT (replForm newState) result
putStrLn ""
_ -> do
result <- evalAST (Just conn) (replSelectedVersions newState) ast
liftIO $ do
putStr "tricu > "
printResult $ formatT (replForm newState) result
putStrLn ""
return newState
strip :: String -> String
strip = dropWhileEnd isSpace . dropWhile isSpace
watchLoop :: REPLState -> InputT IO ()
watchLoop state = handle (\Interrupt -> do
outputStrLn "\nStopped watching file"
when (isJust (replWatcherThread state)) $ do
liftIO $ killThread (fromJust $ replWatcherThread state)
loop state { replWatchedFile = Nothing, replWatcherThread = Nothing }) $ do
liftIO $ threadDelay 1000000
watchLoop state
processWatchedFile :: FilePath -> Maybe Connection -> Map.Map String T.Text -> EvaluatedForm -> IO ()
processWatchedFile filepath mconn selectedVersions outputForm = do
content <- readFile filepath
let asts = parseTricu content
case mconn of
Nothing -> putStrLn "Content store not initialized for watched file processing."
Just conn -> do
forM_ asts $ \ast -> case ast of
SDef name [] body -> do
result <- evalAST (Just conn) selectedVersions body
hash <- ContentStore.storeTerm conn [name] result
putStrLn $ "tricu > Stored definition: " ++ name ++ " with hash " ++ T.unpack hash
putStrLn $ "tricu > " ++ name ++ " = " ++ formatT outputForm result
_ -> do
result <- evalAST (Just conn) selectedVersions ast
putStrLn $ "tricu > Result: " ++ formatT outputForm result
putStrLn $ "tricu > Processed file: " ++ filepath
formatTimestamp :: Integer -> String
formatTimestamp ts = formatTime defaultTimeLocale "%Y-%m-%d %H:%M:%S" (posixSecondsToUTCTime (fromIntegral ts))
displayColoredHash :: T.Text -> IO ()
displayColoredHash hash = do
let (prefix, rest) = T.splitAt 16 hash
setSGR [SetColor Foreground Vivid Cyan]
putStr $ T.unpack prefix
setSGR [SetColor Foreground Dull White]
putStr $ T.unpack rest
setSGR [Reset]
coloredHashString :: T.Text -> String
coloredHashString hash =
"\ESC[1;36m" ++ T.unpack (T.take 16 hash) ++
"\ESC[0;37m" ++ T.unpack (T.drop 16 hash) ++
"\ESC[0m"
withColor :: ColorIntensity -> Color -> IO () -> IO ()
withColor intensity color action = do
setSGR [SetColor Foreground intensity color]
action
setSGR [Reset]
printColored :: ColorIntensity -> Color -> String -> IO ()
printColored intensity color text = withColor intensity color $ putStr text
printlnColored :: ColorIntensity -> Color -> String -> IO ()
printlnColored intensity color text = withColor intensity color $ putStrLn text
printSuccess :: String -> IO ()
printSuccess = printlnColored Vivid Green
printError :: String -> IO ()
printError = printlnColored Vivid Red
printWarning :: String -> IO ()
printWarning = printlnColored Vivid Yellow
printPrompt :: String -> IO ()
printPrompt = printColored Vivid Blue
printVariable :: String -> IO ()
printVariable = printColored Vivid Magenta
printTag :: String -> IO ()
printTag = printColored Vivid Yellow
printKeyword :: String -> IO ()
printKeyword = printColored Vivid Blue
printResult :: String -> IO ()
printResult = printColored Dull White
displayTags :: [T.Text] -> IO ()
displayTags [] = return ()
displayTags tags = do
putStr " Tags: "
forM_ (zip [0..] tags) $ \(i, tag) -> do
printTag (T.unpack tag)
when (i < length tags - 1) $ putStr ", "
putStrLn ""