-module Sim (simulate, Circuit, simulateIO) where
+module Sim (simulate, SCircuit, Circuit, simulateIO, stateless) where
import Data.Typeable
simulate f input s = do
output = run f input s
-- A circuit with input of type a, state of type s and output of type b
-type Circuit a s b = a -> s -> (s, b)
+type SCircuit i s o = i -> s -> (s, o)
+type Circuit i o = i -> o
-run :: Circuit a s b -> [a] -> s -> [(a, b, s)]
+run :: SCircuit i s o -> [i] -> s -> [(i, o, s)]
run f (i:input) s =
(i, o, s'): (run f input s')
where
(s', o) = f i s
run _ [] _ = []
-simulateIO :: (Read a, Show a, Show b, Show s) => Sim.Circuit a s b -> s -> IO()
+simulateIO :: (Read i, Show i, Show o, Show s) => SCircuit i s o -> s -> IO()
simulateIO c s = do
putStr "Initial State: "
putStr $ show s
putStr "\n\n"
runIO c s
-runIO :: (Read a, Show a, Show b, Show s) => Sim.Circuit a s b -> s -> IO()
+runIO :: (Read i, Show i, Show o, Show s) => SCircuit i s o -> s -> IO()
runIO f s = do
putStr "\nInput? "
line <- getLine
putStr "\nNew State: "
putStr $ show s
putStr "\n\n"
+
+-- Takes a stateless circuit and turns it into a stateful circuit (with an
+-- empty state) so it can be used in simulation
+stateless :: Circuit i o -> SCircuit i () o
+stateless f = \i s -> (s, f i)
+
-- vim: set ts=8 sw=2 sts=2 expandtab: