21 lines
627 B
Haskell
21 lines
627 B
Haskell
module Main where
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import Control.Monad (forever)
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import Data.Type.Nat (Nat (Z))
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import System.IO (hFlush, stdout)
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import LambdaCalculus.Evaluation.Optimal (eval)
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import LambdaCalculus.Parser (parse)
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import LambdaCalculus.Representation (convert)
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import LambdaCalculus.Representation.Dependent.ReverseDeBruijn (Expression)
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prompt :: String -> IO String
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prompt text = do
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putStr text
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hFlush stdout
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getLine
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main :: IO ()
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main = forever $ parse "stdin" <$> prompt ">> " >>= \case
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Left parseError -> putStrLn $ "Parse error: " ++ show parseError
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Right expr -> do print expr; print $ eval (convert expr :: Expression 'Z)
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