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1 module Main ()
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2 where
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3
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4 import System.IO
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5 import System.Environment
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6 import System.Exit
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7
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8 import Misc
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9 import Parser
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10 import Evaluator
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11
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12
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13
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14 main :: IO ()
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15 main = (hSetBuffering stdout NoBuffering) >> getArgs >>= \args ->
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16 if length args /= 1 then usage
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17 else readFile (head args) `catch` (\ _ -> putStr "Error: Couldn't open source file.\n" >> exitWith (ExitFailure 1))
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18 >>= \source ->
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19 interact (run source)
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20
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21 run :: String -> String -> String
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22 run source input = nodeTreeToString (evaluate (apply (parse source) (stringToNodeTree input)))
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23
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24
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25
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26 usage :: IO ()
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27 usage = putStr "Usage: rhotorhi sourcecode.rho\n" |
