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|
module Eval
( evalMain
) where
import Control.Exception
import Control.Monad.State
import System.Console.Haskeline
import System.Environment
import System.Exit
import System.IO
type Environment = [String]
eval :: String -> IO ()
eval code = putStrLn "ok"
evalFile :: String -> IO ()
evalFile path = do
file <- try $ readFile path :: IO (Either IOError String)
case file of
Left exception -> print (exception :: IOError)
Right file -> eval file
evalRepl :: String -> Environment -> InputT IO Environment
evalRepl line env = outputStrLn (show env) >> pure env
repl :: Environment -> InputT IO ()
repl env =
getInputLine ":: "
>>= (\case
Nothing -> pure ()
Just line -> evalRepl line env >>= repl
)
usage :: IO ()
usage = putStrLn "Invalid arguments. Use 'bruijn [file]' instead"
evalMain :: IO ()
evalMain = do
args <- getArgs
case args of
[] -> runInputT defaultSettings { historyFile = Just ".brown-history" }
$ repl []
[path] -> evalFile path
_ -> usage
|
