--
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, AST.TypeMark)
mkMap sigmap id =
createArchitecture ::
HsFunction -- | The function signature
-> FuncData -- | The function data collected so far
- -> FuncData -- | The modified function data
+ -> VHDLState ()
createArchitecture hsfunc fdata =
let func = flatFunc fdata in
case func of
-- Skip (builtin) functions without a FlatFunction
- Nothing -> fdata
+ Nothing -> do return ()
-- Create an architecture for all other functions
- Just flatfunc ->
- let
- s = sigs flatfunc
- a = args flatfunc
- r = res flatfunc
- entity_id = Maybe.fromMaybe
+ 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)
- sig_decs = [mkSigDec info | (id, info) <- s, (all (id `Foldable.notElem`) (r:a)) ]
- arch = AST.ArchBody (mkVHDLId "structural") (AST.NSimple entity_id) (map AST.BDISD sig_decs) []
- in
- fdata { funcArch = Just arch }
+ -- 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 =
(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 entity fdata of
+ case funcEntity fdata of
Nothing -> Nothing
Just e -> case ent_decl e of
Nothing -> Nothing
-> [AST.LibraryUnit] -- | The library units it generates
getLibraryUnits (hsfunc, fdata) =
- case entity fdata of
+ case funcEntity fdata of
Nothing -> []
Just ent -> case ent_decl ent of
Nothing -> []