{-|

Module : $Header$

Copyright : (c) Till Mossakowski, Uni Bremen 2002-2004

Licence : similar to LGPL, see HetCATS/LICENCE.txt or LIZENZ.txt

Maintainer : hets@tzi.de

Stability : provisional

Portability : non-portable(Logic)

Analysis of libraries

Follows the verification semantics sketched in Chap. IV:6

of the CASL Reference Manual.

-}

{-

Todo:

Generalization to heterogeneous views

check that libname coincides with filename (otherwise internal error occurs)

-}

module Static.AnalysisLibrary (anaFile, ana_LIB_DEFN, anaString) where

import Logic.Logic

import Logic.Grothendieck

import Common.Lib.Graph

import Static.DevGraph

import Syntax.AS_Structured hiding (View_defn, Spec_defn)

import Syntax.AS_Library

import Static.AnalysisStructured

import Static.AnalysisArchitecture

import Common.AS_Annotation

import Common.GlobalAnnotations

import Common.ConvertGlobalAnnos

import Common.AnalyseAnnos

import Common.Result

import Common.Id

import qualified Common.Lib.Map as Map

import Common.PrettyPrint

import Driver.Options

import Driver.ReadFn

import Driver.WriteFn (writeFileInfo)

import Data.List(nub)

import System.Environment(getEnv)

-- | parsing and static analysis for files

-- Parameters: logic graph, default logic, file name

anaFile :: LogicGraph -> AnyLogic -> HetcatsOpts -> LibEnv -> String

-> IO (Maybe (LIB_NAME,LIB_DEFN,DGraph,LibEnv))

anaFile logicGraph defaultLogic opts libenv fname = do

putIfVerbose opts 1 ("Reading " ++ fname)

fname' <- existsAnSource fname

case fname' of

Nothing -> do

if outputToStdout opts then

putStrLn (fname++" not found.")

else return ()

return Nothing

Just fname'' -> do

input <- readFile fname''

anaString logicGraph defaultLogic opts libenv input (Just fname'')

-- | parsing and static analysis for string (=contents of file)

-- Parameters: logic graph, default logic, contents of file, filename (if any)

anaString :: LogicGraph -> AnyLogic -> HetcatsOpts -> LibEnv -> String

-> Maybe String -> IO (Maybe (LIB_NAME,LIB_DEFN,DGraph,LibEnv))

anaString logicGraph defaultLogic opts libenv input fname = do

let fname' = case fname of

Nothing -> "<stdin>"

Just n -> n

ast <- read_LIB_DEFN_M defaultLogic fname' input

Result ds res <-

ioresToIO (ana_LIB_DEFN logicGraph defaultLogic opts

libenv ast)

-- no diags expected here, since these are handled in ana_LIB_DEFN

-- sequence (map (putStrLn . show) diags)

case (res,fname) of

(Just (ln,_,_,lenv), Just n) ->

writeFileInfo opts ds n ln lenv

_ -> return ()

return res

-- lookup/read a library

anaLibFile :: LogicGraph -> AnyLogic -> HetcatsOpts -> LibEnv -> LIB_NAME

-> IO ([Diagnosis], LibEnv)

anaLibFile logicGraph defaultLogic opts libenv libname = do

-- is the library already in memory?

case Map.lookup libname libenv of

Just _ -> return ([],libenv)

Nothing -> do

-- if not compute the filename,

fname <- case getLIB_ID libname of

Indirect_link file _ -> do

path <- case libdir opts of

"" -> catch (getEnv "HETS_LIB")

(\ _ -> return "")

p -> return p

-- add trailing "/" if necessary

let path1 = case path of

"" -> ""

p -> case last p of

'/' -> p

_ -> p++"/"

return (path1++file)

Direct_link _ _ ->

if outputToStdout opts then

error "No direct links implemented yet"

else return (error "No direct links implemented yet")

-- check if and env file is there and read it if it is recent

let env_fname = fname++".env"

-- fname is sufficient here, because anaFile

-- trys all possible suffices with this basename

recent_env_file <- checkRecentEnv env_fname fname

if recent_env_file

then do

putIfVerbose opts 1 ("Reading "++env_fname)

(Result dias mgc) <- globalContextfromShATerm env_fname

-- the conversion/reading might yield an error that

-- should be caught here

(dias2, mLibEnv) <-

maybe (do ioresToIO $ showDiags1 opts

(resToIORes (Result dias mgc))

anaLibFile' fname dias)

(\ gc@(_,_,dgraph) -> do

putIfVerbose opts 1 ""

-- get all DGRefs from DGraph

let libEnv' = (Map.insert libname gc libenv)

nodesDGRef =

filter (\ labDG -> case labDG of

DGRef _ _ _ -> True

_ -> False)

(map snd (labNodes dgraph))

-- and call anaLibFile with each of the dgn_libname

-- of the DGRefs

refLibs = nub $ map dgn_libname nodesDGRef

newRefLibs =

filter (\ ln ->

not (ln `elem` Map.keys libEnv'))

refLibs

foldl (\ioLibEnv tlibname ->

do (dias3 ,p_libEnv) <- ioLibEnv

putIfVerbose opts 1

("Analyzing from " ++

showPretty tlibname "\n")

(dias4, libEnvF) <-

anaLibFile logicGraph defaultLogic

opts p_libEnv tlibname

return ((dias3 ++ dias4),libEnvF)

) (return ([], libEnv')) newRefLibs

)

mgc

if outputToStdout opts then

return ([], mLibEnv)

else return( dias ++ dias2 , mLibEnv)

else anaLibFile' fname []

where anaLibFile' :: FilePath -> [Diagnosis] -> IO ([Diagnosis], LibEnv)

anaLibFile' fname diags'=

do

-- read and analyze the library,

if outputToStdout opts then

do

res <- anaFile logicGraph defaultLogic opts libenv fname

putIfVerbose opts 1 ""

-- and just return the libenv

return (case res of

Just (_,_,_,libenv') -> (diags', libenv')

Nothing -> (diags', libenv)

)

else do

(dias, res) <- anaFileW logicGraph defaultLogic opts

libenv fname

return (case res of

Just (_,_,_,libenv') -> (diags'++dias, libenv')

Nothing -> ((diags $ message ()

(fname ++" not found."))

++ diags',libenv))

anaFileW :: LogicGraph -> AnyLogic -> HetcatsOpts -> LibEnv -> String

-> IO ([Diagnosis], Maybe (LIB_NAME,LIB_DEFN,DGraph,LibEnv))

anaFileW logicGraph' defLogic' opts' libenv' fname = do

fname' <- existsAnSource fname

case fname' of

Nothing -> return ([], Nothing)

Just fname'' -> do

input <- readFile fname''

anaStringW logicGraph' defLogic' opts' libenv' input

(Just fname'')

anaStringW :: LogicGraph -> AnyLogic -> HetcatsOpts -> LibEnv -> String

-> Maybe String

-> IO ([Diagnosis], Maybe (LIB_NAME,LIB_DEFN,DGraph,LibEnv))

anaStringW logicGraph' defLogic' opts' libenv' input fname = do

let fname' = case fname of

Nothing -> "<stdin>"

Just n -> n

(_, ast) <- read_LIB_DEFN_M_WI defLogic' fname' input

Result ds res <-

ioresToIO (ana_LIB_DEFN logicGraph' defLogic' opts'

libenv' ast)

case (res,fname) of

(Just (ln,_,_,lenv), Just n) ->

writeFileInfo opts' ds n ln lenv

_ -> return ()

return (ds, res)

-- | analyze a LIB_DEFN

-- Parameters: logic graph, default logic, opts, library env, LIB_DEFN

-- call this function as follows:

-- do Result diags res <- ioresToIO (ana_LIB_DEFN ...)

-- sequence (map (putStrLn . show) diags)

ana_LIB_DEFN :: LogicGraph -> AnyLogic -> HetcatsOpts

-> LibEnv -> LIB_DEFN

-> IOResult (LIB_NAME,LIB_DEFN,DGraph,LibEnv)

ana_LIB_DEFN lgraph defl opts libenv (Lib_defn ln alibItems pos ans) = do

gannos <- resToIORes $ addGlobalAnnos emptyGlobalAnnos ans

(libItems',gctx@(_,_,dg),_,libenv') <-

foldl ana (return ([],(gannos,Map.empty,empty),defl,libenv))

(map item alibItems)

return (ln,

Lib_defn ln

(map (uncurry replaceAnnoted)

(zip (reverse libItems') alibItems))

pos

ans,

dg,

Map.insert ln gctx libenv')

where

ana res1 libItem = do

(libItems',gctx1,l1,libenv1) <- res1

IOResult (do

Result diags2 res <-

ioresToIO $ ana_LIB_ITEM lgraph defl opts libenv1 gctx1 l1 libItem

ioresToIO $ showDiags1 opts (resToIORes (Result diags2 res))

if outputToStdout opts then

if hasErrors diags2 then

fail "Stopped due to errors"

else case res of

Just (libItem',gctx1',l1',libenv1') ->

return (return (libItem':libItems',gctx1',l1',libenv1'))

Nothing -> fail "Stopped. No result available"

else do

--result1 <- ioresToIO res1

--let diags1 = diags result1

if hasErrors diags2 then

ioresToIO $ resToIORes (Result (diags2) Nothing)

else case res of

Just (libItem',gctx1',l1',libenv1') ->

return ((return (libItem':libItems',gctx1',l1',libenv1'))

{diags = diags2})

Nothing -> return $ fail "Stopped. No result available"

)

-- analyse a LIB_ITEM

-- Parameters: logic graph, default logic, opts, library env

-- global context, current logic, LIB_ITEM

ana_LIB_ITEM :: LogicGraph -> AnyLogic -> HetcatsOpts

-> LibEnv -> GlobalContext -> AnyLogic

-> LIB_ITEM

-> IOResult (LIB_ITEM,GlobalContext,AnyLogic,LibEnv)

ana_LIB_ITEM lgraph _defl opts libenv gctx@(gannos, genv, _) l

(Spec_defn spn gen asp pos) = do

let analyseMessage = "Analyzing spec " ++ showPretty spn ""

ioToIORes (putIfVerbose opts 1 analyseMessage)

if outputToStdout opts then

return()

else

resToIORes $ message () analyseMessage

(gen',(imp,params,parsig,allparams),dg') <-

resToIORes (ana_GENERICITY lgraph gctx l opts (extName "P" (makeName spn)) gen)

(sp',body,dg'') <-

resToIORes (ana_SPEC lgraph (gannos,genv,dg')

allparams (makeName spn) opts (item asp))

let libItem' = Spec_defn spn gen' (replaceAnnoted sp' asp) pos

if Map.member spn genv

then resToIORes (plain_error (libItem',gctx,l,libenv)

("Name "++ showPretty spn " already defined")

(headPos pos))

else return (libItem',

(gannos,

Map.insert spn (SpecEntry (imp,params,parsig,body)) genv,

dg''),

l,

libenv)

ana_LIB_ITEM lgraph defl opts libenv gctx l

(View_defn vn gen vt gsis pos) = do

let analyseMessage = "Analyzing view " ++ showPretty vn ""

ioToIORes (putIfVerbose opts 1 analyseMessage)

if outputToStdout opts then

return()

else

resToIORes $ message () analyseMessage

resToIORes (ana_VIEW_DEFN lgraph defl libenv gctx l opts

vn gen vt gsis pos)

-- architectural specification

ana_LIB_ITEM lgraph defl opts libenv gctx@(gannos, genv, _) l

(Arch_spec_defn asn asp pos) = do

let analyseMessage = "Analyzing arch spec " ++ showPretty asn ""

ioToIORes (putIfVerbose opts 1 analyseMessage )

if outputToStdout opts then

return()

else

resToIORes $ message () analyseMessage

(archSig, dg', asp') <- resToIORes (ana_ARCH_SPEC lgraph defl gctx l opts

(item asp))

let asd' = Arch_spec_defn asn (replaceAnnoted asp' asp) pos

gctx' = (gannos, genv, dg')

if Map.member asn genv

then

resToIORes (plain_error (asd', gctx', l, libenv)

("Name " ++ showPretty asn " already defined")

(headPos pos))

else

return (asd',

(gannos,

Map.insert asn (ArchEntry archSig) genv,

dg'),

l,

libenv)

-- unit specification

ana_LIB_ITEM lgraph defl opts libenv gctx@(gannos, genv, _) l

usd@(Unit_spec_defn usn usp pos) = do

let analyseMessage = "Analyzing unit spec " ++ showPretty usn ""

ioToIORes (putIfVerbose opts 1 analyseMessage)

if outputToStdout opts then

return()

else

resToIORes $ message () analyseMessage

(unitSig, dg', usp') <- resToIORes (ana_UNIT_SPEC lgraph defl gctx l opts

(EmptyNode defl) usp)

let usd' = Unit_spec_defn usn usp' pos

if Map.member usn genv

then

resToIORes (plain_error (usd, (gannos, genv, dg'), l, libenv)

("Name " ++ showPretty usn " already defined")

(headPos pos))

else

return (usd',

(gannos,

Map.insert usn (UnitEntry unitSig) genv,

dg'),

l,

libenv)

-- refinement specification

ana_LIB_ITEM lgraph defl opts libenv gctx@(gannos, genv, dg) l

rd@(Ref_spec_defn rn ref pos) = do

let analyseMessage = "Analyzing refinement " ++ showPretty rn "\n (refinement analysis not implemented yet)"

ioToIORes (putIfVerbose opts 1 analyseMessage )

if outputToStdout opts then

return()

else

resToIORes $ message () analyseMessage

let rd' = rd

dg' = dg

if Map.member rn genv

then

resToIORes (plain_error (rd, (gannos, genv, dg), l, libenv)

("Name " ++ showPretty rn " already defined")

(headPos pos))

else

return (rd',

(gannos,

Map.insert rn (RefEntry) genv,

dg'),

l,

libenv)

-- logic declaration

ana_LIB_ITEM lgraph _defl opts libenv gctx _l

(Logic_decl ln@(Logic_name logTok _) pos) = do

logNm <- lookupLogic "LOGIC DECLARATION:" (tokStr logTok) lgraph

let analyseMessage = "logic " ++ show logNm

ioToIORes (putIfVerbose opts 1 analyseMessage)

if outputToStdout opts then

return()

else

resToIORes $ message () analyseMessage

return (Logic_decl ln pos,gctx,logNm,libenv)

ana_LIB_ITEM lgraph defl opts libenv gctx@(gannos,genv,dg) l

libItem@(Download_items ln items pos) = do

-- we take as the default logic for imported libs

-- the global default logic

let items' = zip items (drop 2 (pos ++ repeat nullPos))

analyseMessage = "Analyzing from " ++ showPretty ln "\n"

ioToIORes (putIfVerbose opts 1 analyseMessage)

if outputToStdout opts then

return()

else

resToIORes $ message () analyseMessage

(diags', libenv') <- ioToIORes (anaLibFile lgraph defl opts libenv ln)

resToIORes $ Result diags' $ Just ()

-- let libMsg = unlines $ map show diags'

-- resToIORes $ message () libMsg

case Map.lookup ln libenv' of

Nothing -> do

if outputToStdout opts then

do

ioToIORes (putStrLn ("Internal error: did not find library "++

show ln++" available: "++show (Map.keys libenv')))

return (libItem,gctx,l,libenv')

else

resToIORes $ (fatal_error ("Internal error: did not find library "

++show ln++" available: "++show (Map.keys libenv')) nullPos)

Just (gannos', genv', _dg') -> do

(genv1,dg1) <- resToIORes (foldl (ana_ITEM_NAME_OR_MAP ln genv')

(return (genv,dg)) items'

)

gannos'' <- resToIORes $ gannos `mergeGlobalAnnos` gannos'

return (libItem,(gannos'',genv1,dg1),l,libenv')

-- ??? Needs to be generalized to views between different logics

ana_VIEW_DEFN :: LogicGraph -> AnyLogic -> LibEnv -> GlobalContext

-> AnyLogic -> HetcatsOpts -> SIMPLE_ID

-> GENERICITY -> VIEW_TYPE -> [G_mapping] -> [Pos]

-> Result (LIB_ITEM, GlobalContext, AnyLogic, LibEnv)

ana_VIEW_DEFN lgraph _defl libenv gctx@(gannos, genv, _) l opts

vn gen vt gsis pos = do

let adj = adjustPos (headPos pos)

(gen',(imp,params,parsig,allparams),dg') <-

ana_GENERICITY lgraph gctx l opts (extName "VG" (makeName vn)) gen

(vt',(src,tar),dg'') <-

ana_VIEW_TYPE lgraph (gannos,genv,dg') l allparams opts (makeName vn) vt

let gsigmaS = getSig src

gsigmaT = getSig tar

G_sign lidS sigmaS <- return gsigmaS

G_sign lidT sigmaT <- return gsigmaT

gsis1 <- adj $ Syntax.AS_Structured.homogenizeGM (Logic lidS) gsis

G_symb_map_items_list lid sis <- return gsis1

sigmaS' <- rcoerce lid lidS (headPos pos) sigmaS

sigmaT' <- rcoerce lid lidT (headPos pos) sigmaT

mor <- if isStructured opts then return (ide lid sigmaS')

else do

rmap <- adj $ stat_symb_map_items lid sis

adj $ induced_from_to_morphism lid rmap sigmaS' sigmaT'

nodeS <- maybeToResult (headPos pos)

"Internal error: empty source spec of view" (getNode src)

nodeT <- maybeToResult (headPos pos)

"Internal error: empty source spec of view" (getNode tar)

let gmor = gEmbed (G_morphism lid mor)

link = (nodeS,nodeT,DGLink {

dgl_morphism = gmor,

dgl_type = GlobalThm Open None Open,

-- 'Open' for conserv correct?

dgl_origin = DGView vn})

vsig = (src,gmor,(imp,params,parsig,tar))

if Map.member vn genv

then plain_error (View_defn vn gen' vt' gsis pos,gctx,l,libenv)

("Name "++showPretty vn " already defined")

(headPos pos)

else return (View_defn vn gen' vt' gsis pos,

(gannos,

Map.insert vn (ViewEntry vsig) genv,

insEdge link dg''),

l,

libenv)

ana_ITEM_NAME_OR_MAP :: LIB_NAME -> GlobalEnv -> Result (GlobalEnv, DGraph)

-> (ITEM_NAME_OR_MAP, Pos) -> Result (GlobalEnv, DGraph)

ana_ITEM_NAME_OR_MAP ln genv' res (Item_name name,pos) =

ana_ITEM_NAME_OR_MAP1 ln genv' res name name pos

ana_ITEM_NAME_OR_MAP ln genv' res (Item_name_map old new _, pos) =

ana_ITEM_NAME_OR_MAP1 ln genv' res old new pos

ana_ITEM_NAME_OR_MAP1 :: LIB_NAME -> GlobalEnv -> Result (GlobalEnv, DGraph)

-> SIMPLE_ID -> SIMPLE_ID -> Pos

-> Result (GlobalEnv, DGraph)

ana_ITEM_NAME_OR_MAP1 ln genv' res old new pos = do

(genv,dg) <- res

entry <- maybeToResult pos

(showPretty old " not found") (Map.lookup old genv')

case Map.lookup new genv of

Nothing -> return ()

Just _ -> fatal_error (showPretty new " already used") pos

case entry of

SpecEntry extsig ->

let (dg1,extsig1) = refExtsig ln dg (Just new) extsig

genv1 = Map.insert new (SpecEntry extsig1) genv

in return (genv1,dg1)

ViewEntry vsig ->

let (dg1,vsig1) = refViewsig ln dg vsig

genv1 = Map.insert new (ViewEntry vsig1) genv

in return (genv1,dg1)

ArchEntry _asig -> ana_err "arch spec download"

UnitEntry _usig -> ana_err "unit spec download"

refNodesig :: LIB_NAME -> (DGraph, [NodeSig]) -> (Maybe SIMPLE_ID, NodeSig)

-> (DGraph, [NodeSig])

refNodesig ln (dg,refdNodes) (name,NodeSig(n,sigma)) =

let node_contents = DGRef {

dgn_renamed = makeMaybeName name,

dgn_libname = ln,

dgn_node = n }

[node] = newNodes 0 dg

in (insNode (node,node_contents) dg, NodeSig(node,sigma) : refdNodes)

refNodesig _ln (dg,refdNodes) (_,EmptyNode l) =

(dg,EmptyNode l : refdNodes)

refNodesigs :: LIB_NAME -> DGraph -> [(Maybe SIMPLE_ID, NodeSig)]

-> (DGraph, [NodeSig])

refNodesigs ln dg nds =

(dg',reverse nodes')

where (dg', nodes') = foldl (refNodesig ln) (dg,[]) nds

refExtsig :: LIB_NAME -> DGraph -> Maybe SIMPLE_ID -> ExtGenSig

-> (DGraph, ExtGenSig)

refExtsig ln dg name (imps,params,gsigmaP,body) =

(dg1,(imps1,params1,gsigmaP,body1))

where

params' = map (\x -> (Nothing,x)) params

(dg1,imps1:body1:params1) =

refNodesigs ln dg

((Nothing,imps):(name,body):params')

refViewsig :: LIB_NAME -> DGraph -> (NodeSig, t1, ExtGenSig)

-> (DGraph, (NodeSig, t1, ExtGenSig))

refViewsig ln dg (src,mor,extsig) =

(dg2,(src1,mor,extsig1))

where

(_,[src1]) = refNodesigs ln dg [(Nothing,src)]

(dg2,extsig1) = refExtsig ln dg Nothing extsig