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implementation module Z3
import System.Process
import Text
import StdString
import StdDebug
:: Z3 =
{ handle :: ProcessHandle
, stdIn :: WritePipe
, stdOut :: ReadPipe
, stdErr :: ReadPipe
}
startZ3 :: *World -> (Z3, *World)
startZ3 w
# (err, w) = runProcessIO "z3" ["-smt2", "-in"] Nothing w
# (handle, {ProcessIO | stdIn, stdOut, stdErr}) = fromOk err
# z3 = { Z3 |
handle = handle,
stdIn = stdIn,
stdOut = stdOut,
stdErr = stdErr
}
= (z3, w)
addAssert :: Z3 String *World -> *World
addAssert z3 s w
# (_, w) = writePipe ("(assert (" <+ s <+ "))\n") z3.Z3.stdIn w
= w
addVariable :: Z3 String *World -> *World
addVariable z3 s w
# (_, w) = writePipe ("(declare-const " <+ s <+ " Real)\n") z3.Z3.stdIn w
= w
checkSat :: Z3 *World -> (Bool, *World)
checkSat z3 w
# (_, w) = writePipe "(check-sat)\n" z3.Z3.stdIn w
# (out, w) = readPipeBlocking z3.Z3.stdOut w
# out = fromOk out
= (startsWith "sat" out, w)
getModel :: Z3 *World -> (String, *World)
getModel z3 w
# (_, w) = writePipe "(get-model)\n" z3.Z3.stdIn w
# (_, w) = writePipe "(exit)\n" z3.Z3.stdIn w
# (_, w) = waitForProcess z3.Z3.handle w
# (out, w) = readPipeNonBlocking z3.Z3.stdOut w
# out = fromOk out
= (out, w)
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