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module Main where
import Syntax
import Typecheck
import Eval
import Control.Monad.Except
main :: IO ()
main = do
input <-getContents
let program = (read input)::Program
case runExcept $ wfProgram program of
Left s -> print s
Right () ->
let (ret,state) = runProgram program in
case ret of
Left err-> print$ "Program finished with error" ++show err ++ "in state " ++ show state
Right _ -> print$ "Program finished by going to the end to state" ++ show state
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