{- |

Module :$Header$

Description : CMDL interface commands

Copyright : uni-bremen and DFKI

License : similar to LGPL, see HetCATS/LICENSE.txt or LIZENZ.txt

Maintainer : r.pascanu@jacobs-university.de

Stability : provisional

Portability : portable

PGIP.ProveConsistency contains prove and consistency check command

-}

module PGIP.ProveConsistency

( cProver

, cConsChecker

, checkNode

, proveNode

, proveLoop

, consCheckLoop

, sigIntHandler

) where

import PGIP.DataTypes

import PGIP.DataTypesUtils

import PGIP.Utils

import Comorphisms.LogicGraph

import Proofs.EdgeUtils

import Proofs.StatusUtils

import Proofs.AbstractState

import Static.GTheory

import Static.DevGraph

import Logic.Grothendieck

import Logic.Comorphism

import Logic.Logic

import qualified Logic.Prover as P

import Common.LibName

import Common.Result

import Data.List

import qualified Data.Map as Map

import Control.Concurrent

import Control.Concurrent.MVar

import System.IO

getProversAutomatic :: [AnyComorphism] -> [(G_prover, AnyComorphism)]

getProversAutomatic = foldl addProvers []

where addProvers acc cm =

case cm of

Comorphism cid -> acc ++

foldl (\ l p ->

if P.hasProverKind

P.ProveCMDLautomatic p

then (G_prover (targetLogic cid)

p,cm):l

else l) [] (provers $ targetLogic cid)

-- | Select a prover

cProver::String -> CMDL_State ->

IO CMDL_State

cProver input state =

do

-- trimed input

inpls <- checkPresenceProvers [(trim input)]

let inp = case inpls of

[] -> "Unknown"

pnme:_ ->pnme

case proveState state of

Nothing -> return $ genErrorMsg "Nothing selected" state

Just pS ->

-- check that some theories are selected

case elements pS of

[] -> return $ genErrorMsg "Nothing selected" state

(Element z _):_ ->

-- see if any comorphism was used

case cComorphism pS of

-- if none use the theory of the first selected node

-- to find possible comorphisms

Nothing-> case find (\(y,_)->

(getPName y)==inp) $

getProversAutomatic $ findComorphismPaths

logicGraph $ sublogicOfTh $ theory z of

Nothing -> return $genErrorMsg ("No applicable prover with"

++" this name found") state

Just (p,_)-> return $ addToHistory(ProverChange $

prover pS) state {

proveState=Just pS

{prover = Just p }

}

-- if yes, use the comorphism to find a list

-- of provers

Just x ->

case find (\(y,_)-> (getPName y)==inp)

$ getProversAutomatic [x] of

Nothing ->

case find (\(y,_) ->

(getPName y)==inp) $

getProversAutomatic $

findComorphismPaths logicGraph $

sublogicOfTh $ theory z of

Nothing -> return $ genErrorMsg ("No applicable prover with"

++" this name found") state

Just (p,nCm@(Comorphism cid))->

return $ addToHistory (ProverChange $ prover pS)

$ genMessage ("Prover can't be used with the "

++"comorphism selected using translate"

++" command. Using comorphism : "

++ language_name cid) []

state {

proveState = Just pS {

cComorphism=Just nCm

,prover = Just p

}

}

Just (p,_) -> return

$ addToHistory (ProverChange $ prover pS)

state {

proveState = Just pS {

prover = Just p

}

}

-- | Selects a consistency checker

cConsChecker::String -> CMDL_State -> IO CMDL_State

cConsChecker input state =

do

--trimed input

let inp = trim input

case proveState state of

Nothing -> return $ genErrorMsg "Nothing selected" state

Just pS ->

--check that some theories are selected

case elements pS of

[] -> return $ genErrorMsg "Nothing selected" state

(Element z _):_ ->

-- see if any comorphism was used

case cComorphism pS of

--if none use the theory of the first selected node

--to find possible comorphisms

Nothing -> case find (\(y,_)->

(getPName y)==inp) $

getConsCheckersAutomatic $findComorphismPaths

logicGraph $ sublogicOfTh $ theory z of

Nothing -> return $ genErrorMsg ("No applicable "++

"consistency checker with this name found")

state

Just (p,_) -> return $ addToHistory(ConsCheckerChange $

consChecker pS) state {

proveState = Just pS {

consChecker = Just p}}

Just x ->

case find(\(y,_) -> (getPName y) == inp)

$ getConsCheckersAutomatic [x] of

Nothing ->

case find (\(y,_) ->

(getPName y) == inp)$ getConsCheckersAutomatic $

findComorphismPaths logicGraph $ sublogicOfTh $

theory z of

Nothing -> return $ genErrorMsg ("No applicable consistency "++

"checker with this name found") state

Just (p,nCm@(Comorphism cid)) ->

return $ addToHistory (ConsCheckerChange $ consChecker pS)

$ genMessage ("Consistency checker can't be used with the "

++"comorphism selected using translate "

++"command. Using comorphism :"

++ language_name cid) []

state {

proveState = Just pS {

cComorphism = Just nCm

,consChecker = Just p

} }

Just (p,_) -> return

$addToHistory (ConsCheckerChange $ consChecker pS)

state {

proveState = Just pS{

consChecker = Just p } }

-- | Given a proofstatus the function does the actual call of the

-- prover for consistency checking

checkNode ::

--use theorems is subsequent proofs

Bool ->

-- save problem file for each goal

Bool ->

-- Tactic script

String ->

-- proofState of the node that needs proving

-- all theorems, goals and axioms should have

-- been selected before,but the theory should have

-- not beed recomputed

CMDL_ProofAbstractState->

-- node name

String ->

-- selected prover, if non one will be automatically

-- selected

Maybe G_cons_checker ->

-- selected comorphism, if non one will be automatically

-- selected

Maybe AnyComorphism ->

MVar (Maybe ThreadId) ->

MVar (Maybe CMDL_ProofAbstractState) ->

MVar LibEnv ->

LIB_NAME ->

-- returns an error message if anything happens

IO String

checkNode useTh save2File sTxt ndpf ndnm mp mcm mThr mSt mlbE libname

=do

case ndpf of

Element pf_st nd ->

do

-- recompute the theory (to make effective the selected axioms,

-- goals) !? needed?

st <- recalculateSublogicAndSelectedTheory pf_st

-- compute a prover,comorphism pair to be used in preparing

-- the theory

p_cm@(_,acm)

<-case mcm of

Nothing -> lookupKnownConsChecker st P.ProveCMDLautomatic

Just cm' ->

case mp of

Nothing-> lookupKnownConsChecker st P.ProveCMDLautomatic

Just p' -> return (p',cm')

-- try to prepare the theory

prep <- case prepareForConsChecking st p_cm of

Result _ Nothing ->

do

p_cm'@(prv',acm'@(Comorphism cid)) <-

lookupKnownConsChecker st P.ProveCMDLautomatic

putStrLn ("Analyzing node " ++ ndnm)

putStrLn ("Using the comorphism " ++ language_name cid)

putStrLn ("Using consistency checker " ++ getPName prv')

return $ case prepareForConsChecking st p_cm' of

Result _ Nothing -> Nothing

Result _ (Just sm)-> Just (sm,acm')

Result _ (Just sm) -> return $ Just (sm,acm)

case prep of

-- theory could not be computed

Nothing -> do

return "No suitable prover and comorphism found"

Just (G_theory_with_cons_checker lid1 th p, cmp)->

do

case P.proveCMDLautomaticBatch p of

Nothing -> do

return "Error obtaining the prover"

Just fn ->

do

-- mVar to poll the prover for results

answ <- newMVar (return [])

let st' = st { proverRunning= True}

-- store initial input of the prover

swapMVar mSt $ Just $ Element st' nd

{- putStrLn ((theoryName st)++"\n"++

(showDoc sign "") ++

show (vsep (map (print_named lid1)

$ P.toNamedList sens))) -}

case selectedGoals st' of

[] -> return "No goals selected. Nothing to prove"

_ ->

do

tmp <-fn useTh

save2File

answ

(theoryName st)

(P.Tactic_script sTxt)

th

swapMVar mThr $ Just $ fst tmp

pollForResults lid1 cmp (snd tmp) answ mSt []

swapMVar mThr $ Nothing

lbEnv <- readMVar mlbE

state <- readMVar mSt

case state of

Nothing -> return []

Just state' ->

do

lbEnv' <- addResults lbEnv libname state'

swapMVar mSt Nothing

swapMVar mlbE lbEnv'

return []

-- | Given a proofstatus the function does the actual call of the

-- prover for proving the node or check consistency

proveNode ::

--use theorems is subsequent proofs

Bool ->

-- save problem file for each goal

Bool ->

-- Tactic script

String ->

-- proofState of the node that needs proving

-- all theorems, goals and axioms should have

-- been selected before,but the theory should have

-- not beed recomputed

CMDL_ProofAbstractState->

-- node name

String ->

-- selected prover, if non one will be automatically

-- selected

Maybe G_prover ->

-- selected comorphism, if non one will be automatically

-- selected

Maybe AnyComorphism ->

MVar (Maybe ThreadId) ->

MVar (Maybe CMDL_ProofAbstractState) ->

MVar LibEnv ->

LIB_NAME ->

-- returns an error message if anything happens

IO String

proveNode useTh save2File sTxt ndpf ndnm mp mcm mThr mSt mlbE libname

=do

case ndpf of

Element pf_st nd ->

do

-- recompute the theory (to make effective the selected axioms,

-- goals)

st <- recalculateSublogicAndSelectedTheory pf_st

-- compute a prover,comorphism pair to be used in preparing

-- the theory

p_cm@(_,acm)

<-case mcm of

Nothing -> lookupKnownProver st P.ProveCMDLautomatic

Just cm' ->

case mp of

Nothing-> lookupKnownProver st P.ProveCMDLautomatic

Just p' -> return (p',cm')

-- try to prepare the theory

prep <- case prepareForProving st p_cm of

Result _ Nothing ->

do

p_cm'@(prv',acm'@(Comorphism cid)) <-

lookupKnownProver st P.ProveCMDLautomatic

putStrLn ("Analyzing node " ++ ndnm)

putStrLn ("Using the comorphism " ++ language_name cid)

putStrLn ("Using prover " ++ getPName prv')

return $ case prepareForProving st p_cm' of

Result _ Nothing -> Nothing

Result _ (Just sm)-> Just (sm,acm')

Result _ (Just sm) -> return $ Just (sm,acm)

case prep of

-- theory could not be computed

Nothing -> do

return "No suitable prover and comorphism found"

Just (G_theory_with_prover lid1 th p, cmp)->

do

case P.proveCMDLautomaticBatch p of

Nothing -> do

return "Error obtaining the prover"

Just fn ->

do

-- mVar to poll the prover for results

answ <- newMVar (return [])

let st' = st { proverRunning= True}

-- store initial input of the prover

swapMVar mSt $ Just $ Element st' nd

{- putStrLn ((theoryName st)++"\n"++

(showDoc sign "") ++

show (vsep (map (print_named lid1)

$ P.toNamedList sens))) -}

case selectedGoals st' of

[] -> return "No goals selected. Nothing to prove"

_ ->

do

tmp <-fn useTh

save2File

answ

(theoryName st)

(P.Tactic_script sTxt)

th

swapMVar mThr $ Just $ fst tmp

pollForResults lid1 cmp (snd tmp) answ mSt []

swapMVar mThr $ Nothing

lbEnv <- readMVar mlbE

state <- readMVar mSt

case state of

Nothing -> return []

Just state' ->

do

lbEnv' <- addResults lbEnv libname state'

swapMVar mSt Nothing

swapMVar mlbE lbEnv'

return []

pollForResults :: (Logic lid sublogics basic_spec sentence

symb_items symb_map_items

sign morphism symbol raw_symbol proof_tree) =>

lid ->

AnyComorphism ->

MVar () ->

MVar (Result [P.Proof_status proof_tree]) ->

MVar (Maybe CMDL_ProofAbstractState) ->

[P.Proof_status proof_tree] ->

IO ()

pollForResults lid acm mStop mData mState done

=do

let toPrint ls=map(\x->let txt = "Goal "++(P.goalName x)++" is "

in case P.goalStatus x of

P.Open ->txt++"still open."

P.Disproved->txt++"disproved."

P.Proved _ ->txt++"proved.") ls

d <- takeMVar mData

case d of

Result _ Nothing ->

do

tmp <- tryTakeMVar mStop

case tmp of

Just () ->

do

t <- readMVar mData

case t of

Result _ (Just _) ->

do

putMVar mStop ()

pollForResults lid acm mStop mData mState done

Result _ Nothing ->

return ()

Nothing -> pollForResults lid acm mStop mData mState done

Result _ (Just d') ->

do

let d'' = nub d'

l = d'' \\ done

ls = toPrint l

smth <- readMVar mState

case smth of

Nothing ->

do

tmp <- tryTakeMVar mStop

case tmp of

Just () -> return ()

Nothing -> pollForResults lid acm mStop mData mState done

Just (Element st node) ->

do

putStrLn $ prettyPrintList ls

swapMVar mState $ Just $ Element (markProved acm lid l st) node

tmp <- tryTakeMVar mStop

case tmp of

Just () -> return ()

Nothing -> pollForResults lid acm mStop mData mState

(done++l)

-- | inserts the results of the proof in the development graph

addResults :: LibEnv

-> LIB_NAME

-> CMDL_ProofAbstractState

-> IO LibEnv

addResults lbEnv libname ndps

=case ndps of

Element ps' node ->

do

-- inspired from Proofs/InferBasic.hs

-- and GUI/ProofManagement.hs

let ps'' = ps' {

proverRunning = False }

case theory ps'' of

G_theory lidT sigT indT sensT _ ->

do

gMap <-coerceThSens (logicId ps'') lidT

"ProveCommands last coerce"

(goalMap ps'')

let nwTh = G_theory lidT sigT indT (Map.union sensT gMap) startThId

dGraph = lookupDGraph libname lbEnv

oldContents = labDG dGraph node

newContents = oldContents {dgn_theory = nwTh}

(nextDGraph,changes) =

updateWithOneChange (SetNodeLab

(error "addResults")

(node,newContents)) dGraph

rules = []

nextHistoryElem = (rules, changes)

return $ mkResultProofStatus libname lbEnv nextDGraph

nextHistoryElem

-- | Signal handler that stops the prover from running

-- when SIGINT is send

sigIntHandler :: MVar (Maybe ThreadId) ->

MVar LibEnv ->

MVar (Maybe CMDL_ProofAbstractState) ->

ThreadId ->

MVar LibEnv ->

LIB_NAME ->

IO ()

sigIntHandler mthr mlbE mSt thr mOut libname

= do

-- print a message

-- ? shellputStr ! should be used !

putStrLn "Prover stopped."

-- check if the prover is runnig

tmp <- readMVar mthr

case tmp of

Nothing -> return ()

Just sm -> killThread sm

-- kill the prove/prove-all thread

killThread thr

-- update LibEnv with intermidiar results !?

lbEnv <- readMVar mlbE

st <- readMVar mSt

case st of

Nothing ->

do

putMVar mOut lbEnv

return ()

Just st' ->

do

lbEnv' <- addResults lbEnv libname st'

-- add to the output mvar results until now

putMVar mOut lbEnv'

return ()

proveLoop :: MVar LibEnv ->

MVar (Maybe ThreadId) ->

MVar (Maybe CMDL_ProofAbstractState) ->

MVar LibEnv ->

CMDL_ProveState ->

CMDL_DevGraphState ->

[CMDL_ProofAbstractState] ->

IO ()

proveLoop mlbE mThr mSt mOut pS pDgS ls

= case ls of

-- we are done

[] -> do

nwLbEnv <- readMVar mlbE

putMVar mOut nwLbEnv

return ()

x: l ->

do

let nodeName x' = case x' of

Element _ t -> case find(\(n,_)-> n==t)

$ getAllNodes pDgS of

Nothing -> "Unkown node"

Just (_,ll) ->

getDGNodeName ll

putStrLn ("Analyzing node " ++ nodeName x)

err <- proveNode (useTheorems pS)

(save2file pS)

(script pS)

x

(nodeName x)

(prover pS)

(cComorphism pS)

mThr

mSt

mlbE

(ln pDgS)

case err of

[] -> proveLoop mlbE mThr mSt mOut pS pDgS l

_ -> do

putStrLn err

proveLoop mlbE mThr mSt mOut pS pDgS l

consCheckLoop :: MVar LibEnv ->

MVar (Maybe ThreadId) ->

MVar (Maybe CMDL_ProofAbstractState) ->

MVar LibEnv ->

CMDL_ProveState ->

CMDL_DevGraphState ->

[CMDL_ProofAbstractState] ->

IO ()

consCheckLoop mlbE mThr mSt mOut pS pDgS ls

= case ls of

-- we are done

[] -> do

nwLbEnv <- readMVar mlbE

putMVar mOut nwLbEnv

return ()

x:l ->

do

let nodeName x' = case x' of

Element _ t -> case find(\(n,_) -> n==t) $

getAllNodes pDgS of

Nothing -> "Unknown node"

Just (_,ll) ->

getDGNodeName ll

putStrLn ("Analyzing node " ++ nodeName x)

err <- checkNode (useTheorems pS)

(save2file pS)

(script pS)

x

(nodeName x)

(consChecker pS)

(cComorphism pS)

mThr

mSt

mlbE

(ln pDgS)

case err of

[] -> consCheckLoop mlbE mThr mSt mOut pS pDgS l

_ -> do

putStrLn err

consCheckLoop mlbE mThr mSt mOut pS pDgS l