{- |

Module : $Id$

Description : static analysis for CspCASL

Copyright : (c) Markus Roggenbach, Till Mossakowski, Uni Bremen 2004-2005

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

Maintainer : M.Roggenbach@swansea.ac.uk

Stability : provisional

Portability : portable

static analysis for CSP-CASL

-}

{- todo:

most of the process and channel analysis missing

sentences are completely missing:

use equation systems of processes, like:

spec hugo =

data ...

channel ...

process A = a->A

process P = ...A...Q...

Q = ...P....

R = a->P

reveal R

reveal R should keep CASL data part, and reveal process R

-}

module CspCASL.StatAnaCSP where

import CASL.Sign

import Common.AS_Annotation

import Common.Result

import Common.GlobalAnnotations

import Common.Id

import qualified Data.Map as Map

import Common.Lib.State

import Common.ExtSign

import CspCASL.AS_CspCASL

import CspCASL.SignCSP

basicAnalysisCspCASL :: (CspBasicSpec, CSPSign, GlobalAnnos)

-> Result (CspBasicSpec, ExtSign CSPSign (), [Named ()])

basicAnalysisCspCASL (cc, sigma, _ga) = do

let (_, accSig) = runState (ana_BASIC_CSP cc) sigma

let ds = reverse $ envDiags accSig

Result ds (Just ()) -- insert diags

return (cc, mkExtSign accSig, [])

ana_BASIC_CSP :: CspBasicSpec -> State CSPSign CspBasicSpec

ana_BASIC_CSP cc = do

checkLocalTops

chs' <- anaChannels (channels cc)

peqs' <- anaProcesses (proc_items cc)

return (CspBasicSpec chs' peqs')

-- | Check CspCASL signature for local top elements in subsorts.

checkLocalTops :: State CSPSign ()

checkLocalTops = do

sig <- get

put sig

addDiags [mkDiag Warning "Test warning" ()]

return ()

anaChannels :: [CHANNEL_DECL] -> State CSPSign [CHANNEL_DECL]

anaChannels cs = mapM (anaChannel) cs

--fmap Channel_items $ mapM (anaChannel) cs

anaChannel :: CHANNEL_DECL -> State CSPSign CHANNEL_DECL

anaChannel c = do

checkSorts [(channelSort c)]

sig <- get

let ext = extendedInfo sig

oldchn = chans ext

-- test for double declaration with different sorts should be added

let ins m n = Map.insert (mkId [n]) (channelSort c) m

put sig { extendedInfo = ext { chans = foldl ins oldchn [] } }

return c

anaProcesses :: [PROC_ITEM] -> State CSPSign [PROC_ITEM]

anaProcesses ps = return ps