--
module VHDL where
-import Data.Traversable
+import qualified Data.Foldable as Foldable
import qualified Maybe
+import qualified Control.Monad as Monad
import qualified Type
import qualified Name
import VHDLTypes
import FlattenTypes
import TranslatorTypes
+import Pretty
-- | Create an entity for a given function
createEntity ::
HsFunction -- | The function signature
-> FuncData -- | The function data collected so far
- -> FuncData -- | The modified function data
+ -> VHDLState ()
createEntity hsfunc fdata =
let func = flatFunc fdata in
case func of
-- Skip (builtin) functions without a FlatFunction
- Nothing -> fdata
+ Nothing -> do return ()
-- Create an entity for all other functions
Just flatfunc ->
let
- s = sigs flatfunc
- a = args flatfunc
- r = res flatfunc
- args' = map (fmap (mkMap s)) a
- res' = fmap (mkMap s) r
+ sigs = flat_sigs flatfunc
+ args = flat_args flatfunc
+ res = flat_res flatfunc
+ args' = map (fmap (mkMap sigs)) args
+ res' = fmap (mkMap sigs) res
ent_decl' = createEntityAST hsfunc args' res'
- entity' = Entity args' res' (Just ent_decl')
+ AST.EntityDec entity_id _ = ent_decl'
+ entity' = Entity entity_id args' res' (Just ent_decl')
in
- fdata { entity = Just entity' }
+ setEntity hsfunc entity'
where
- mkMap :: Eq id => [(id, SignalInfo)] -> id -> AST.VHDLId
+ mkMap :: Eq id => [(id, SignalInfo)] -> id -> (AST.VHDLId, AST.TypeMark)
mkMap sigmap id =
- mkVHDLId nm
+ (mkVHDLId nm, vhdl_ty ty)
where
info = Maybe.fromMaybe
(error $ "Signal not found in the name map? This should not happen!")
(lookup id sigmap)
nm = Maybe.fromMaybe
(error $ "Signal not named? This should not happen!")
- (name info)
+ (sigName info)
+ ty = sigTy info
-- | Create the VHDL AST for an entity
createEntityAST ::
AST.EntityDec vhdl_id ports
where
vhdl_id = mkEntityId hsfunc
- ports = []
+ ports = concatMap (mapToPorts AST.In) args
+ ++ mapToPorts AST.Out res
+ mapToPorts :: AST.Mode -> VHDLSignalMap -> [AST.IfaceSigDec]
+ mapToPorts mode m =
+ map (mkIfaceSigDec mode) (Foldable.toList m)
+
+-- | Create a port declaration
+mkIfaceSigDec ::
+ AST.Mode -- | The mode for the port (In / Out)
+ -> (AST.VHDLId, AST.TypeMark) -- | The id and type for the port
+ -> AST.IfaceSigDec -- | The resulting port declaration
+
+mkIfaceSigDec mode (id, ty) = AST.IfaceSigDec id mode ty
-- | Generate a VHDL entity name for the given hsfunc
mkEntityId hsfunc =
-- TODO: This doesn't work for functions with multiple signatures!
mkVHDLId $ hsFuncName hsfunc
+-- | Create an architecture for a given function
+createArchitecture ::
+ HsFunction -- | The function signature
+ -> FuncData -- | The function data collected so far
+ -> VHDLState ()
+
+createArchitecture hsfunc fdata =
+ let func = flatFunc fdata in
+ case func of
+ -- Skip (builtin) functions without a FlatFunction
+ Nothing -> do return ()
+ -- Create an architecture for all other functions
+ Just flatfunc -> do
+ let sigs = flat_sigs flatfunc
+ let args = flat_args flatfunc
+ let res = flat_res flatfunc
+ let apps = flat_apps flatfunc
+ let 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
+ let sig_decs = [mkSigDec info | (id, info) <- sigs, (all (id `Foldable.notElem`) (res:args)) ]
+ -- Create component instantiations for all function applications
+ insts <- mapM mkCompInsSm apps
+ let insts' = map AST.CSISm insts
+ let arch = AST.ArchBody (mkVHDLId "structural") (AST.NSimple entity_id) (map AST.BDISD sig_decs) insts'
+ setArchitecture hsfunc 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.
+ -> VHDLState AST.CompInsSm -- | The corresponding VHDL component instantiation.
+
+mkCompInsSm 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)
+ return $ AST.CompInsSm (mkVHDLId label) (AST.IUEntity (AST.NSimple entity_id)) (AST.PMapAspect portmaps)
+ where
+ 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]
-- | The VHDL Bit type
bit_ty :: AST.TypeMark
projects / matthijs / master-project / cλash.git / blobdiff