- mkVHDLId $ Maybe.fromMaybe
- (error $ "Unnamed signal? This should not happen!")
- (sigName info)
-
--- | Transforms a flat function application to a VHDL component instantiation.
-mkCompInsSm ::
- [(UnnamedSignal, SignalInfo)] -- | The signals in the current architecture
- -> FApp UnnamedSignal -- | The application to look at.
- -> VHDLState AST.CompInsSm -- | The corresponding VHDL component instantiation.
-
-mkCompInsSm sigs app = do
- let hsfunc = appFunc app
- fdata_maybe <- getFunc hsfunc
- let fdata = Maybe.fromMaybe
- (error $ "Using function '" ++ (prettyShow hsfunc) ++ "' that is not in the session? This should not happen!")
- fdata_maybe
- let entity = Maybe.fromMaybe
- (error $ "Using function '" ++ (prettyShow hsfunc) ++ "' without entity declaration? This should not happen!")
- (funcEntity fdata)
- let entity_id = ent_id entity
- label <- uniqueName (AST.fromVHDLId entity_id)
- let portmaps = mkAssocElems sigs app entity
- return $ AST.CompInsSm (mkVHDLId label) (AST.IUEntity (AST.NSimple entity_id)) (AST.PMapAspect portmaps)
-
-mkAssocElems ::
- [(UnnamedSignal, SignalInfo)] -- | The signals in the current architecture
- -> FApp UnnamedSignal -- | The application to look at.
- -> Entity -- | The entity to map against.
- -> [AST.AssocElem] -- | The resulting port maps
-
-mkAssocElems sigmap app entity =
- -- Create the actual AssocElems
- Maybe.catMaybes $ zipWith mkAssocElem ports sigs
- where
- -- Turn the ports and signals from a map into a flat list. This works,
- -- since the maps must have an identical form by definition. TODO: Check
- -- the similar form?
- arg_ports = concat (map Foldable.toList (ent_args entity))
- res_ports = Foldable.toList (ent_res entity)
- arg_sigs = (concat (map Foldable.toList (appArgs app)))
- res_sigs = Foldable.toList (appRes app)
- -- Extract the id part from the (id, type) tuple
- ports = (map (fmap fst) (arg_ports ++ res_ports))
- -- Translate signal numbers into names
- sigs = (map (lookupSigName sigmap) (arg_sigs ++ res_sigs))
-
--- | Look up a signal in the signal name map
-lookupSigName :: [(UnnamedSignal, SignalInfo)] -> UnnamedSignal -> String
-lookupSigName sigs sig = name
- where
- info = Maybe.fromMaybe
- (error $ "Unknown signal " ++ (show sig) ++ " used? This should not happen!")
- (lookup sig sigs)
- name = Maybe.fromMaybe
- (error $ "Unnamed signal " ++ (show sig) ++ " used? This should not happen!")
- (sigName info)
-
--- | Create an VHDL port -> signal association
-mkAssocElem :: Maybe AST.VHDLId -> String -> Maybe AST.AssocElem
-mkAssocElem (Just port) signal = Just $ Just port AST.:=>: (AST.ADName (AST.NSimple (mkVHDLId signal)))
-mkAssocElem Nothing _ = Nothing
-
--- | Extracts the generated entity id from the given funcdata
-getEntityId :: FuncData -> Maybe AST.VHDLId
-getEntityId fdata =
- case funcEntity fdata of
- Nothing -> Nothing
- Just e -> case ent_decl e of
- Nothing -> Nothing
- Just (AST.EntityDec id _) -> Just id