+-- | Create an architecture for a given function
+createArchitecture ::
+ HsFunction -- | The function signature
+ -> FuncData -- | The function data collected so far
+ -> FuncData -- | The modified function data
+
+createArchitecture hsfunc fdata =
+ let func = flatFunc fdata in
+ case func of
+ -- Skip (builtin) functions without a FlatFunction
+ Nothing -> fdata
+ -- Create an architecture for all other functions
+ Just flatfunc ->
+ let
+ sigs = flat_sigs flatfunc
+ args = flat_args flatfunc
+ res = flat_res flatfunc
+ apps = flat_apps flatfunc
+ entity_id = Maybe.fromMaybe
+ (error $ "Building architecture without an entity? This should not happen!")
+ (getEntityId fdata)
+ -- Create signal declarations for all signals that are not in args and
+ -- res
+ sig_decs = [mkSigDec info | (id, info) <- sigs, (all (id `Foldable.notElem`) (res:args)) ]
+ -- Create component instantiations for all function applications
+ insts = map (AST.CSISm . mkCompInsSm) apps
+ arch = AST.ArchBody (mkVHDLId "structural") (AST.NSimple entity_id) (map AST.BDISD sig_decs) insts
+ in
+ fdata { funcArch = Just arch }
+
+mkSigDec :: SignalInfo -> AST.SigDec
+mkSigDec info =
+ AST.SigDec (mkVHDLId name) (vhdl_ty ty) Nothing
+ where
+ name = Maybe.fromMaybe
+ (error $ "Unnamed signal? This should not happen!")
+ (sigName info)
+ ty = sigTy info
+
+-- | Transforms a flat function application to a VHDL component instantiation.
+mkCompInsSm ::
+ FApp UnnamedSignal -- | The application to look at.
+ -> AST.CompInsSm -- | The corresponding VHDL component instantiation.
+
+mkCompInsSm app =
+ AST.CompInsSm label (AST.IUEntity (AST.NSimple entity_id)) (AST.PMapAspect portmaps)
+ where
+ entity_id = mkVHDLId "foo"
+ label = mkVHDLId "app"
+ portmaps = []
+
+-- | 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
+
+getLibraryUnits ::
+ (HsFunction, FuncData) -- | A function from the session
+ -> [AST.LibraryUnit] -- | The library units it generates
+
+getLibraryUnits (hsfunc, fdata) =
+ case funcEntity fdata of
+ Nothing -> []
+ Just ent -> case ent_decl ent of
+ Nothing -> []
+ Just decl -> [AST.LUEntity decl]
+ ++
+ case funcArch fdata of
+ Nothing -> []
+ Just arch -> [AST.LUArch arch]