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view interps/rhotor/Main.hs @ 11243:5c41fb3f6567
<oerjan> # Stolen from Roger9//`learn Bureaucracy (from French bureau, "burrow") is a political system in which squirrels rule the nation, and burrow their nuts.
author | HackBot |
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date | Wed, 22 Nov 2017 00:43:46 +0000 |
parents | 859f9b4339e6 |
children |
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module Main () where import System.IO import System.Environment import System.Exit import Misc import Parser import Evaluator main :: IO () main = (hSetBuffering stdout NoBuffering) >> getArgs >>= \args -> if length args /= 1 then usage else readFile (head args) `catch` (\ _ -> putStr "Error: Couldn't open source file.\n" >> exitWith (ExitFailure 1)) >>= \source -> interact (run source) run :: String -> String -> String run source input = nodeTreeToString (evaluate (apply (parse source) (stringToNodeTree input))) usage :: IO () usage = putStr "Usage: rhotorhi sourcecode.rho\n"