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{-# OPTIONS -cpp #-}
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--
-- Copyright (c) 2004-5 Don Stewart - http://www.cse.unsw.edu.au/~dons
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-- GPL version 2 or later (see http://www.gnu.org/copyleft/gpl.html)
--
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--
-- | Runplugs: use hs-plugins to run a Haskell expression under
-- controlled conditions.
--
import System.Eval.Haskell (unsafeEval)
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import Data.Maybe (isJust, fromJust)
import Control.Monad (when)
import System.Exit (exitWith, ExitCode(ExitSuccess))
import System.IO (getContents, putStrLn)
import System.Posix.Resource (setResourceLimit,
Resource(ResourceCPUTime),
ResourceLimits(ResourceLimits),
ResourceLimit(ResourceLimit))
rlimit = ResourceLimit 3
context = prehier ++ datas ++ controls
prehier = ["Char", "List", "Maybe", "Numeric", "Random" ]
datas = map ("Data." ++) [
"Bits", "Bool", "Char", "Dynamic", "Either",
"Graph", "Int", "Ix", "List", "Maybe",
#if __GLASGOW_HASKELL__ >= 604
"Map",
#else
"FiniteMap",
#endif
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"Ratio", "Set", "Tree", "Tuple", "Typeable", "Word"
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]
controls = map ("Control." ++) ["Monad", "Arrow"]
main = do
setResourceLimit ResourceCPUTime (ResourceLimits rlimit rlimit)
s <- getContents
when (not . null $ s) $ do
s <- unsafeEval ("(take 2048 (show ("++s++")))") context
when (isJust s) (putStrLn (fromJust s))
exitWith ExitSuccess