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509 lines
18 KiB
Haskell
509 lines
18 KiB
Haskell
----------------------------------------------------------------------
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-- |
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-- Module : ShellState
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-- Maintainer : AR
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-- Stability : (stable)
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-- Portability : (portable)
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--
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-- > CVS $Date: 2005/11/14 16:03:41 $
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-- > CVS $Author: aarne $
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-- > CVS $Revision: 1.53 $
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--
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-- (Description of the module)
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-----------------------------------------------------------------------------
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module GF.Compile.ShellState where
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import GF.Data.Operations
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import GF.Canon.GFC
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import GF.Canon.AbsGFC
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import GF.Grammar.Macros
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import GF.Grammar.MMacros
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import GF.Canon.Look
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import GF.Canon.Subexpressions
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import GF.Grammar.LookAbs
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import GF.Compile.ModDeps
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import qualified GF.Infra.Modules as M
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import qualified GF.Grammar.Grammar as G
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import qualified GF.Grammar.PrGrammar as P
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import GF.CF.CF
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import GF.CF.CFIdent
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import GF.CF.CanonToCF
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import GF.UseGrammar.Morphology
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import GF.Probabilistic.Probabilistic
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import GF.Compile.NoParse
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import GF.Infra.Option
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import GF.Infra.Ident
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import GF.System.Arch (ModTime)
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import qualified Transfer.InterpreterAPI as T
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import qualified GF.OldParsing.ConvertGrammar as CnvOld -- OBSOLETE
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import qualified GF.Conversion.GFC as Cnv
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import qualified GF.Parsing.GFC as Prs
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import Data.List (nub,nubBy)
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-- AR 11/11/2001 -- 17/6/2003 (for modules) ---- unfinished
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-- | multilingual state with grammars and options
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data ShellState = ShSt {
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abstract :: Maybe Ident , -- ^ pointer to actual abstract, if not empty st
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concrete :: Maybe Ident , -- ^ pointer to primary concrete
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concretes :: [((Ident,Ident),Bool)], -- ^ list of all concretes, and whether active
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canModules :: CanonGrammar , -- ^ compiled abstracts and concretes
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srcModules :: G.SourceGrammar , -- ^ saved resource modules
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cfs :: [(Ident,CF)] , -- ^ context-free grammars (small, no parameters, very over-generating)
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abstracts :: [(Ident,[Ident])], -- ^ abstracts and their associated concretes
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mcfgs :: [(Ident, Cnv.MGrammar)], -- ^ MCFG, converted according to Ljunglöf (2004, ch 3)
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cfgs :: [(Ident, Cnv.CGrammar)], -- ^ CFG, converted from mcfg
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-- (large, with parameters, no-so overgenerating)
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pInfos :: [(Ident, Prs.PInfo)], -- ^ parsing information (compiled mcfg&cfg grammars)
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morphos :: [(Ident,Morpho)], -- ^ morphologies
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probss :: [(Ident,Probs)], -- ^ probability distributions
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gloptions :: Options, -- ^ global options
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readFiles :: [(FilePath,ModTime)],-- ^ files read
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absCats :: [(G.Cat,(G.Context,
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[(G.Fun,G.Type)],
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[((G.Fun,Int),G.Type)]))], -- ^ cats, (their contexts,
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-- functions to them,
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-- functions on them)
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statistics :: [Statistics], -- ^ statistics on grammars
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transfers :: [(Ident,T.Env)] -- ^ transfer modules
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}
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actualConcretes :: ShellState -> [((Ident,Ident),Bool)]
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actualConcretes sh = nub [((c,c),b) |
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Just a <- [abstract sh],
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c <- concretesOfAbstract sh a,
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let b = True -----
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]
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concretesOfAbstract :: ShellState -> Ident -> [Ident]
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concretesOfAbstract sh a = [c | (b,cs) <- abstracts sh, b == a, c <- cs]
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data Statistics =
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StDepTypes Bool -- ^ whether there are dependent types
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| StBoundVars [G.Cat] -- ^ which categories have bound variables
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--- -- etc
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deriving (Eq,Ord)
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emptyShellState :: ShellState
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emptyShellState = ShSt {
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abstract = Nothing,
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concrete = Nothing,
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concretes = [],
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canModules = M.emptyMGrammar,
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srcModules = M.emptyMGrammar,
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cfs = [],
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abstracts = [],
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mcfgs = [],
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cfgs = [],
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pInfos = [],
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morphos = [],
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probss = [],
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gloptions = noOptions,
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readFiles = [],
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absCats = [],
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statistics = [],
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transfers = []
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}
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optInitShellState :: Options -> ShellState
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optInitShellState os = addGlobalOptions os emptyShellState
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type Language = Ident
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language :: String -> Language
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language = identC
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prLanguage :: Language -> String
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prLanguage = prIdent
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-- | grammar for one language in a state, comprising its abs and cnc
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data StateGrammar = StGr {
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absId :: Ident,
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cncId :: Ident,
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grammar :: CanonGrammar,
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cf :: CF,
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mcfg :: Cnv.MGrammar,
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cfg :: Cnv.CGrammar,
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pInfo :: Prs.PInfo,
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morpho :: Morpho,
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probs :: Probs,
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loptions :: Options
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}
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emptyStateGrammar :: StateGrammar
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emptyStateGrammar = StGr {
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absId = identC "#EMPTY", ---
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cncId = identC "#EMPTY", ---
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grammar = M.emptyMGrammar,
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cf = emptyCF,
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mcfg = [],
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cfg = [],
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pInfo = Prs.buildPInfo [] [],
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morpho = emptyMorpho,
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probs = emptyProbs,
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loptions = noOptions
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}
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-- analysing shell grammar into parts
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stateGrammarST :: StateGrammar -> CanonGrammar
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stateCF :: StateGrammar -> CF
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stateMCFG :: StateGrammar -> Cnv.MGrammar
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stateCFG :: StateGrammar -> Cnv.CGrammar
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statePInfo :: StateGrammar -> Prs.PInfo
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stateMorpho :: StateGrammar -> Morpho
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stateProbs :: StateGrammar -> Probs
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stateOptions :: StateGrammar -> Options
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stateGrammarWords :: StateGrammar -> [String]
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stateGrammarLang :: StateGrammar -> (CanonGrammar, Ident)
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stateGrammarST = grammar
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stateCF = cf
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stateMCFG = mcfg
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stateCFG = cfg
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statePInfo = pInfo
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stateMorpho = morpho
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stateProbs = probs
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stateOptions = loptions
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stateGrammarWords = allMorphoWords . stateMorpho
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stateGrammarLang st = (grammar st, cncId st)
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cncModuleIdST :: StateGrammar -> CanonGrammar
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cncModuleIdST = stateGrammarST
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-- | form a shell state from a canonical grammar
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grammar2shellState :: Options -> (CanonGrammar, G.SourceGrammar) -> Err ShellState
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grammar2shellState opts (gr,sgr) =
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updateShellState opts doParseAll Nothing emptyShellState ((0,sgr,gr),[]) --- is 0 safe?
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-- | update a shell state from a canonical grammar
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updateShellState :: Options -> NoParse -> Maybe Ident -> ShellState ->
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((Int,G.SourceGrammar,CanonGrammar),[(FilePath,ModTime)]) ->
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---- (CanonGrammar,(G.SourceGrammar,[(FilePath,ModTime)])) ->
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Err ShellState
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updateShellState opts ign mcnc sh ((_,sgr,gr),rts) = do
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let cgr0 = M.updateMGrammar (canModules sh) gr
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-- a0 = abstract of old state
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-- a1 = abstract of compiled grammar
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let a0 = abstract sh
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a1 <- return $ case mcnc of
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Just cnc -> err (const Nothing) Just $ M.abstractOfConcrete cgr0 cnc
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_ -> M.greatestAbstract cgr0
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-- abstr0 = a1 if it exists
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let (abstr0,isNew) = case (a0,a1) of
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(Just a, Just b) | a /= b -> (a1, True)
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(Nothing, Just _) -> (a1, True)
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_ -> (a0, False)
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let concrs0 = maybe [] (M.allConcretes cgr0) abstr0
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let abstrs = nubBy (\ (x,_) (y,_) -> x == y) $
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maybe id (\a -> ((a,concrs0):)) abstr0 $ abstracts sh
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let cgr = cgr0 ---- filterAbstracts (map fst abstrs) cgr0
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let concrs = nub $ concrs0 ++ map (snd . fst) (concretes sh)
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concr0 = ifNull Nothing (return . head) concrs
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notInrts f = notElem f $ map fst rts
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subcgr = unSubelimCanon cgr
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cfs <- mapM (canon2cf opts ign subcgr) concrs --- why need to update all...
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let morphos = map (mkMorpho subcgr) concrs
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let probss = [] -----
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let fromGFC = snd . snd . Cnv.convertGFC opts
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(mcfgs, cfgs) = unzip $ map (curry fromGFC cgr) concrs
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pInfos = zipWith Prs.buildPInfo mcfgs cfgs
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let funs = funRulesOf cgr
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let cats = allCatsOf cgr
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let csi = [(c,(co,
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[(fun,typ) | (fun,typ) <- funs, compatType tc typ],
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funsOnTypeFs compatType funs tc))
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| (c,co) <- cats, let tc = cat2val co c]
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let deps = True ---- not $ null $ allDepCats cgr
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let binds = [] ---- allCatsWithBind cgr
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let src = M.updateMGrammar (srcModules sh) sgr
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return $ ShSt {
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abstract = abstr0,
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concrete = concr0,
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concretes = zip (zip concrs concrs) (repeat True),
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canModules = cgr,
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srcModules = src,
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cfs = zip concrs cfs,
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abstracts = abstrs,
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mcfgs = zip concrs mcfgs,
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cfgs = zip concrs cfgs,
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pInfos = zip concrs pInfos,
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morphos = zip concrs morphos,
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probss = zip concrs probss,
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gloptions = gloptions sh, --- opts, -- this would be command-line options
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readFiles = [ft | ft@(f,_) <- readFiles sh, notInrts f] ++ rts,
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absCats = csi,
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statistics = [StDepTypes deps,StBoundVars binds],
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transfers = transfers sh
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}
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prShellStateInfo :: ShellState -> String
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prShellStateInfo sh = unlines [
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"main abstract : " +++ abstractName sh,
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"main concrete : " +++ maybe "(none)" P.prt (concrete sh),
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"actual concretes : " +++ unwords (map (P.prt . fst . fst) (actualConcretes sh)),
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"all abstracts : " +++ unwords (map (P.prt . fst) (abstracts sh)),
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"all concretes : " +++ unwords (map (P.prt . fst . fst) (concretes sh)),
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"canonical modules :" +++ unwords (map (P.prt .fst) (M.modules (canModules sh))),
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"source modules : " +++ unwords (map (P.prt .fst) (M.modules (srcModules sh))),
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"global options : " +++ prOpts (gloptions sh),
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"transfer modules : " +++ unwords (map (P.prt . fst) (transfers sh))
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]
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abstractName :: ShellState -> String
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abstractName sh = maybe "(none)" P.prt (abstract sh)
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-- | throw away those abstracts that are not needed --- could be more aggressive
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filterAbstracts :: [Ident] -> CanonGrammar -> CanonGrammar
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filterAbstracts absts cgr = M.MGrammar (nubBy (\x y -> fst x == fst y) [m | m <- ms, needed m]) where
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ms = M.modules cgr
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needed (i,_) = elem i needs
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needs = [i | (i,M.ModMod m) <- ms, not (M.isModAbs m) || any (dep i) absts]
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dep i a = elem i (ext mse a)
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mse = [(i,me) | (i,M.ModMod m) <- ms, M.isModAbs m, me <- [M.extends m]]
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ext es a = case lookup a es of
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Just e -> a : concatMap (ext es) e ---- FIX multiple exts
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_ -> []
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purgeShellState :: ShellState -> ShellState
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purgeShellState sh = ShSt {
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abstract = abstr,
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concrete = concrete sh,
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concretes = concrs,
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canModules = M.MGrammar $ purge $ M.modules $ canModules sh,
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srcModules = M.emptyMGrammar,
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cfs = cfs sh,
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abstracts = maybe [] (\a -> [(a,map (snd . fst) concrs)]) abstr,
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mcfgs = mcfgs sh,
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cfgs = cfgs sh,
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pInfos = pInfos sh,
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morphos = morphos sh,
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probss = probss sh,
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gloptions = gloptions sh,
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readFiles = [],
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absCats = absCats sh,
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statistics = statistics sh,
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transfers = transfers sh
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}
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where
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abstr = abstract sh
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concrs = [((a,i),b) | ((a,i),b) <- concretes sh, elem i needed]
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isSingle = length (abstracts sh) == 1
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needed = nub $ concatMap (requiredCanModules isSingle (canModules sh)) acncs
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purge = nubBy (\x y -> fst x == fst y) . filter (flip elem needed . fst)
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acncs = maybe [] singleton abstr ++ map (snd . fst) (actualConcretes sh)
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changeMain :: Maybe Ident -> ShellState -> Err ShellState
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changeMain Nothing (ShSt _ _ cs ms ss cfs old_pis mcfgs cfgs pinfos mos pbs os rs acs s trs) =
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return (ShSt Nothing Nothing [] ms ss cfs old_pis mcfgs cfgs pinfos mos pbs os rs acs s trs)
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changeMain
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(Just c) st@(ShSt _ _ cs ms ss cfs old_pis mcfgs cfgs pinfos mos pbs os rs acs s trs) =
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case lookup c (M.modules ms) of
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Just _ -> do
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a <- M.abstractOfConcrete ms c
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let cas = M.allConcretes ms a
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let cs' = [((c,c),True) | c <- cas]
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return (ShSt (Just a) (Just c) cs' ms ss cfs old_pis mcfgs cfgs
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pinfos mos pbs os rs acs s trs)
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_ -> P.prtBad "The state has no concrete syntax named" c
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-- | form just one state grammar, if unique, from a canonical grammar
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grammar2stateGrammar :: Options -> CanonGrammar -> Err StateGrammar
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grammar2stateGrammar opts gr = do
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st <- grammar2shellState opts (gr,M.emptyMGrammar)
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concr <- maybeErr "no concrete syntax" $ concrete st
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return $ stateGrammarOfLang st concr
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resourceOfShellState :: ShellState -> Maybe Ident
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resourceOfShellState = M.greatestResource . srcModules
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qualifTop :: StateGrammar -> G.QIdent -> G.QIdent
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qualifTop gr (_,c) = (absId gr,c)
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stateGrammarOfLang :: ShellState -> Language -> StateGrammar
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stateGrammarOfLang st0 l = StGr {
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absId = err (const (identC "Abs")) id $ M.abstractOfConcrete allCan l, ---
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cncId = l,
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grammar = allCan,
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cf = maybe emptyCF id (lookup l (cfs st)),
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mcfg = maybe [] id $ lookup l $ mcfgs st,
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cfg = maybe [] id $ lookup l $ cfgs st,
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pInfo = maybe (Prs.buildPInfo [] []) id $ lookup l $ pInfos st,
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morpho = maybe emptyMorpho id (lookup l (morphos st)),
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probs = maybe emptyProbs id (lookup l (probss st)),
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loptions = errVal noOptions $ lookupOptionsCan allCan
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}
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where
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st = purgeShellState $ errVal st0 $ changeMain (Just l) st0
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allCan = canModules st
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grammarOfLang :: ShellState -> Language -> CanonGrammar
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cfOfLang :: ShellState -> Language -> CF
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morphoOfLang :: ShellState -> Language -> Morpho
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probsOfLang :: ShellState -> Language -> Probs
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optionsOfLang :: ShellState -> Language -> Options
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grammarOfLang st = stateGrammarST . stateGrammarOfLang st
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cfOfLang st = stateCF . stateGrammarOfLang st
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morphoOfLang st = stateMorpho . stateGrammarOfLang st
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probsOfLang st = stateProbs . stateGrammarOfLang st
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optionsOfLang st = stateOptions . stateGrammarOfLang st
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-- | the last introduced grammar, stored in options, is the default for operations
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firstStateGrammar :: ShellState -> StateGrammar
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firstStateGrammar st = errVal (stateAbstractGrammar st) $ do
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concr <- maybeErr "no concrete syntax" $ concrete st
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return $ stateGrammarOfLang st concr
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mkStateGrammar :: ShellState -> Language -> StateGrammar
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mkStateGrammar = stateGrammarOfLang
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stateAbstractGrammar :: ShellState -> StateGrammar
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stateAbstractGrammar st = StGr {
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absId = maybe (identC "Abs") id (abstract st), ---
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cncId = identC "#Cnc", ---
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grammar = canModules st, ---- only abstarct ones
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cf = emptyCF,
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mcfg = [],
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cfg = [],
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pInfo = Prs.buildPInfo [] [],
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morpho = emptyMorpho,
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probs = emptyProbs,
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loptions = gloptions st ----
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}
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-- analysing shell state into parts
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globalOptions :: ShellState -> Options
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allLanguages :: ShellState -> [Language]
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allTransfers :: ShellState -> [Ident]
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allCategories :: ShellState -> [G.Cat]
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allStateGrammars :: ShellState -> [StateGrammar]
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allStateGrammarsWithNames :: ShellState -> [(Language, StateGrammar)]
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allGrammarFileNames :: ShellState -> [String]
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allActiveStateGrammarsWithNames :: ShellState -> [(Language, StateGrammar)]
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allActiveGrammars :: ShellState -> [StateGrammar]
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globalOptions = gloptions
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--allLanguages = map (fst . fst) . concretes
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allLanguages = M.allConcreteModules . canModules
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allTransfers = map fst . transfers
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allCategories = map fst . allCatsOf . canModules
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allStateGrammars = map snd . allStateGrammarsWithNames
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allStateGrammarsWithNames st =
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[(c, mkStateGrammar st c) | ((c,_),_) <- actualConcretes st]
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allGrammarFileNames st = [prLanguage c ++ ".gf" | ((c,_),_) <- actualConcretes st]
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allActiveStateGrammarsWithNames st =
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[(c, mkStateGrammar st c) | ((c,_),True) <- concretes st] --- actual
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allActiveGrammars = map snd . allActiveStateGrammarsWithNames
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{-
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allGrammarSTs = map stateGrammarST . allStateGrammars
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allCFs = map stateCF . allStateGrammars
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firstGrammarST = stateGrammarST . firstStateGrammar
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firstAbstractST = abstractOf . firstGrammarST
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firstConcreteST = concreteOf . firstGrammarST
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-}
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-- command-line option -lang=foo overrides the actual grammar in state
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grammarOfOptState :: Options -> ShellState -> StateGrammar
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grammarOfOptState opts st =
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maybe (firstStateGrammar st) (stateGrammarOfLang st . language) $
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getOptVal opts useLanguage
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languageOfOptState :: Options -> ShellState -> Maybe Language
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languageOfOptState opts st =
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maybe (concrete st) (return . language) $ getOptVal opts useLanguage
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-- | command-line option -cat=foo overrides the possible start cat of a grammar
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firstCatOpts :: Options -> StateGrammar -> CFCat
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firstCatOpts opts sgr =
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maybe (stateFirstCat sgr) (string2CFCat (P.prt (absId sgr))) $
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getOptVal opts firstCat
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-- | the first cat for random generation
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firstAbsCat :: Options -> StateGrammar -> G.QIdent
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firstAbsCat opts = cfCat2Cat . firstCatOpts opts
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-- | a grammar can have start category as option startcat=foo ; default is S
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stateFirstCat :: StateGrammar -> CFCat
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stateFirstCat sgr =
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maybe (string2CFCat a "S") (string2CFCat a) $
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getOptVal (stateOptions sgr) gStartCat
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where
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a = P.prt (absId sgr)
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stateIsWord :: StateGrammar -> String -> Bool
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stateIsWord sg = isKnownWord (stateMorpho sg)
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addProbs :: (Ident,Probs) -> ShellState -> Err ShellState
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addProbs ip@(lang,probs) sh = do
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let gr = grammarOfLang sh lang
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probs' <- checkGrammarProbs gr probs
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let pbs' = (lang,probs') : filter ((/= lang) . fst) (probss sh)
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return $ sh{probss = pbs'}
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addTransfer :: (Ident,T.Env) -> ShellState -> ShellState
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addTransfer it@(i,_) sh =
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sh {transfers = it : filter ((/= i) . fst) (transfers sh)}
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-- modify state
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type ShellStateOper = ShellState -> ShellState
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type ShellStateOperErr = ShellState -> Err ShellState
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reinitShellState :: ShellStateOper
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reinitShellState = const emptyShellState
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languageOn, languageOff :: Language -> ShellStateOper
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languageOn = languageOnOff True
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languageOff = languageOnOff False
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|
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languageOnOff :: Bool -> Language -> ShellStateOper
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--- __________ this is OBSOLETE
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languageOnOff b lang sh = sh {concretes = cs'} where
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cs' = [if lang==l then (lc,b) else i | i@(lc@(l,c),_) <- concretes sh]
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changeOptions :: (Options -> Options) -> ShellStateOper
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--- __________ this is OBSOLETE
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changeOptions f sh = sh {gloptions = f (gloptions sh)}
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|
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changeModTimes :: [(FilePath,ModTime)] -> ShellStateOper
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|
--- __________ this is OBSOLETE
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|
changeModTimes mfs
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(ShSt a c cs can src cfs old_pinfos mcfgs cfgs pinfos ms pbs os ff ts ss trs) =
|
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ShSt a c cs can src cfs old_pinfos mcfgs cfgs pinfos ms pbs os ff' ts ss trs
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where
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ff' = mfs ++ [mf | mf@(f,_) <- ff, notElem f (map fst mfs)]
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|
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addGlobalOptions :: Options -> ShellStateOper
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addGlobalOptions = changeOptions . addOptions
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|
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removeGlobalOptions :: Options -> ShellStateOper
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removeGlobalOptions = changeOptions . removeOptions
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|