--- /dev/null
+{-# LANGUAGE ScopedTypeVariables #-}
+
+module CLasH.Utils.GhcTools where
+
+-- Standard modules
+import qualified Monad
+import qualified System.IO.Unsafe
+import qualified Language.Haskell.TH as TH
+import qualified Maybe
+
+-- GHC API
+import qualified Annotations
+import qualified CoreSyn
+import qualified CoreUtils
+import qualified DynFlags
+import qualified HscTypes
+import qualified GHC
+import qualified Name
+import qualified Serialized
+import qualified Var
+import qualified Outputable
+import qualified Class
+
+-- Local Imports
+import CLasH.Utils.Pretty
+import CLasH.Translator.TranslatorTypes
+import CLasH.Translator.Annotations
+import CLasH.Utils
+
+listBindings :: FilePath -> [FilePath] -> IO ()
+listBindings libdir filenames = do
+ (cores,_,_) <- loadModules libdir filenames Nothing
+ let binds = concatMap (CoreSyn.flattenBinds . HscTypes.cm_binds) cores
+ mapM listBinding binds
+ putStr "\n=========================\n"
+ let classes = concatMap (HscTypes.typeEnvClasses . HscTypes.cm_types) cores
+ mapM listClass classes
+ return ()
+
+listBinding :: (CoreSyn.CoreBndr, CoreSyn.CoreExpr) -> IO ()
+listBinding (b, e) = do
+ putStr "\nBinder: "
+ putStr $ show b ++ "[" ++ show (Var.varUnique b) ++ "]"
+ putStr "\nType of Binder: \n"
+ putStr $ Outputable.showSDoc $ Outputable.ppr $ Var.varType b
+ putStr "\n\nExpression: \n"
+ putStr $ prettyShow e
+ putStr "\n\n"
+ putStr $ Outputable.showSDoc $ Outputable.ppr e
+ putStr "\n\nType of Expression: \n"
+ putStr $ Outputable.showSDoc $ Outputable.ppr $ CoreUtils.exprType e
+ putStr "\n\n"
+
+listClass :: Class.Class -> IO ()
+listClass c = do
+ putStr "\nClass: "
+ putStr $ show (Class.className c)
+ putStr "\nSelectors: "
+ putStr $ show (Class.classSelIds c)
+ putStr "\n"
+
+-- | Show the core structure of the given binds in the given file.
+listBind :: FilePath -> [FilePath] -> String -> IO ()
+listBind libdir filenames name = do
+ (cores,_,_) <- loadModules libdir filenames Nothing
+ bindings <- concatM $ mapM (findBinder (hasVarName name)) cores
+ mapM_ listBinding bindings
+ return ()
+
+-- Change a DynFlag from within the Ghc monad. Strangely enough there seems to
+-- be no standard function to do exactly this.
+setDynFlag :: DynFlags.DynFlag -> GHC.Ghc ()
+setDynFlag dflag = do
+ dflags <- GHC.getSessionDynFlags
+ let dflags' = DynFlags.dopt_set dflags dflag
+ GHC.setSessionDynFlags dflags'
+ return ()
+
+-- We don't want the IO monad sprinkled around everywhere, so we hide it.
+-- This should be safe as long as we only do simple things in the GhcMonad
+-- such as interface lookups and evaluating simple expressions that
+-- don't have side effects themselves (Or rather, that don't use
+-- unsafePerformIO themselves, since normal side effectful function would
+-- just return an IO monad when they are evaluated).
+unsafeRunGhc :: FilePath -> GHC.Ghc a -> a
+unsafeRunGhc libDir m =
+ System.IO.Unsafe.unsafePerformIO $
+ GHC.runGhc (Just libDir) $ do
+ dflags <- GHC.getSessionDynFlags
+ GHC.setSessionDynFlags dflags
+ m
+
+-- | Loads the given files and turns it into a core module
+loadModules ::
+ FilePath -- ^ The GHC Library directory
+ -> [String] -- ^ The files that need to be loaded
+ -> Maybe Finder -- ^ What entities to build?
+ -> IO ( [HscTypes.CoreModule]
+ , HscTypes.HscEnv
+ , [EntitySpec]
+ ) -- ^ ( The loaded modules, the resulting ghc environment, the entities to build)
+loadModules libdir filenames finder =
+ GHC.defaultErrorHandler DynFlags.defaultDynFlags $
+ GHC.runGhc (Just libdir) $ do
+ dflags <- GHC.getSessionDynFlags
+ GHC.setSessionDynFlags dflags
+ cores <- mapM GHC.compileToCoreModule filenames
+ env <- GHC.getSession
+ specs <- case finder of
+ Nothing -> return []
+ Just f -> concatM $ mapM f cores
+ return (cores, env, specs)
+
+findBinds ::
+ Monad m =>
+ (Var.Var -> m Bool)
+ -> HscTypes.CoreModule
+ -> m (Maybe [CoreSyn.CoreBndr])
+findBinds criteria core = do
+ binders <- findBinder criteria core
+ case binders of
+ [] -> return Nothing
+ bndrs -> return $ Just $ map fst bndrs
+
+findBind ::
+ Monad m =>
+ (Var.Var -> m Bool)
+ -> HscTypes.CoreModule
+ -> m (Maybe CoreSyn.CoreBndr)
+findBind criteria core = do
+ binders <- findBinds criteria core
+ case binders of
+ Nothing -> return Nothing
+ (Just bndrs) -> return $ Just $ head bndrs
+
+findExprs ::
+ Monad m =>
+ (Var.Var -> m Bool)
+ -> HscTypes.CoreModule
+ -> m (Maybe [CoreSyn.CoreExpr])
+findExprs criteria core = do
+ binders <- findBinder criteria core
+ case binders of
+ [] -> return Nothing
+ bndrs -> return $ Just (map snd bndrs)
+
+findExpr ::
+ Monad m =>
+ (Var.Var -> m Bool)
+ -> HscTypes.CoreModule
+ -> m (Maybe CoreSyn.CoreExpr)
+findExpr criteria core = do
+ exprs <- findExprs criteria core
+ case exprs of
+ Nothing -> return Nothing
+ (Just exprs) -> return $ Just $ head exprs
+
+findAnns ::
+ Monad m =>
+ (Var.Var -> m [CLasHAnn])
+ -> HscTypes.CoreModule
+ -> m [CLasHAnn]
+findAnns criteria core = do
+ let binds = CoreSyn.flattenBinds $ HscTypes.cm_binds core
+ anns <- Monad.mapM (criteria . fst) binds
+ case anns of
+ [] -> return []
+ xs -> return $ concat xs
+
+-- | Find a binder in module according to a certain criteria
+findBinder ::
+ Monad m =>
+ (Var.Var -> m Bool) -- ^ The criteria to filter the binders on
+ -> HscTypes.CoreModule -- ^ The module to be inspected
+ -> m [(CoreSyn.CoreBndr, CoreSyn.CoreExpr)] -- ^ The binders to meet the criteria
+findBinder criteria core = do
+ let binds = CoreSyn.flattenBinds $ HscTypes.cm_binds core
+ Monad.filterM (criteria . fst) binds
+
+-- | Determine if a binder has an Annotation meeting a certain criteria
+isCLasHAnnotation ::
+ GHC.GhcMonad m =>
+ (CLasHAnn -> Bool) -- ^ The criteria the Annotation has to meet
+ -> Var.Var -- ^ The Binder
+ -> m [CLasHAnn] -- ^ Indicates if binder has the Annotation
+isCLasHAnnotation clashAnn var = do
+ let deserializer = Serialized.deserializeWithData
+ let target = Annotations.NamedTarget (Var.varName var)
+ (anns :: [CLasHAnn]) <- GHC.findGlobalAnns deserializer target
+ let annEnts = filter clashAnn anns
+ return annEnts
+
+-- | Determine if a binder has an Annotation meeting a certain criteria
+hasCLasHAnnotation ::
+ GHC.GhcMonad m =>
+ (CLasHAnn -> Bool) -- ^ The criteria the Annotation has to meet
+ -> Var.Var -- ^ The Binder
+ -> m Bool -- ^ Indicates if binder has the Annotation
+hasCLasHAnnotation clashAnn var = do
+ anns <- isCLasHAnnotation clashAnn var
+ case anns of
+ [] -> return False
+ xs -> return True
+
+-- | Determine if a binder has a certain name
+hasVarName ::
+ Monad m =>
+ String -- ^ The name the binder has to have
+ -> Var.Var -- ^ The Binder
+ -> m Bool -- ^ Indicate if the binder has the name
+hasVarName lookfor bind = return $ lookfor == Name.occNameString (Name.nameOccName $ Name.getName bind)
+
+
+findInitStates ::
+ (Var.Var -> GHC.Ghc Bool) ->
+ (Var.Var -> GHC.Ghc [CLasHAnn]) ->
+ HscTypes.CoreModule ->
+ GHC.Ghc (Maybe [(CoreSyn.CoreBndr, CoreSyn.CoreBndr)])
+findInitStates statec annsc mod = do
+ states <- findBinds statec mod
+ anns <- findAnns annsc mod
+ let funs = Maybe.catMaybes (map extractInits anns)
+ exprs' <- mapM (\x -> findBind (hasVarName (TH.nameBase x)) mod) funs
+ let exprs = Maybe.catMaybes exprs'
+ let inits = zipMWith (\a b -> (a,b)) states exprs
+ return inits
+ where
+ extractInits :: CLasHAnn -> Maybe TH.Name
+ extractInits (InitState x) = Just x
+ extractInits _ = Nothing
+ zipMWith :: (a -> b -> c) -> (Maybe [a]) -> [b] -> (Maybe [c])
+ zipMWith _ Nothing _ = Nothing
+ zipMWith f (Just as) bs = Just $ zipWith f as bs
+
+-- | Make a complete spec out of a three conditions
+findSpec ::
+ (Var.Var -> GHC.Ghc Bool) -> (Var.Var -> GHC.Ghc Bool) -> (Var.Var -> GHC.Ghc [CLasHAnn]) -> (Var.Var -> GHC.Ghc Bool)
+ -> Finder
+
+findSpec topc statec annsc testc mod = do
+ top <- findBind topc mod
+ state <- findExprs statec mod
+ anns <- findAnns annsc mod
+ test <- findExpr testc mod
+ inits <- findInitStates statec annsc mod
+ return [(top, inits, test)]
+ -- case top of
+ -- Just t -> return [(t, state, test)]
+ -- Nothing -> return error $ "Could not find top entity requested"
projects / matthijs / master-project / cλash.git / blobdiff