-- the type works out.
mkConcSm (bndr, Cast expr ty) = mkConcSm (bndr, expr)
+-- For simple a = b assignments, just generate an unconditional signal
+-- assignment. This should only happen for dataconstructors without arguments.
+-- TODO: Integrate this with the below code for application (essentially this
+-- is an application without arguments)
+mkConcSm (bndr, Var v) = return $ [mkUncondAssign (Left bndr) (varToVHDLExpr v)]
+
mkConcSm (bndr, app@(CoreSyn.App _ _))= do
let (CoreSyn.Var f, args) = CoreSyn.collectArgs app
let valargs' = filter isValArg args
-- It's a global value imported from elsewhere. These can be builtin
-- functions.
funSignatures <- getA vsNameTable
+ signatures <- getA vsSignatures
case (Map.lookup (bndrToString f) funSignatures) of
Just (arg_count, builder) ->
if length valargs == arg_count then
- let
- sigs = map (varToVHDLExpr.varBndr) valargs
- func = builder sigs
- src_wform = AST.Wform [AST.WformElem func Nothing]
- dst_name = AST.NSimple (mkVHDLExtId (bndrToString bndr))
- assign = dst_name AST.:<==: (AST.ConWforms [] src_wform Nothing)
- in
- return [AST.CSSASm assign]
+ case builder of
+ Left funBuilder ->
+ let
+ sigs = map (varToVHDLExpr.varBndr) valargs
+ func = funBuilder sigs
+ src_wform = AST.Wform [AST.WformElem func Nothing]
+ dst_name = AST.NSimple (mkVHDLExtId (bndrToString bndr))
+ assign = dst_name AST.:<==: (AST.ConWforms [] src_wform Nothing)
+ in
+ return [AST.CSSASm assign]
+ Right genBuilder ->
+ let
+ ty = Var.varType bndr
+ len = tfvec_len ty
+ sigs = map varBndr valargs
+ signature = Maybe.fromMaybe
+ (error $ "Using function '" ++ (bndrToString (head sigs)) ++ "' without signature? This should not happen!")
+ (Map.lookup (head sigs) signatures)
+ arg_names = map (mkVHDLExtId . bndrToString) (tail sigs)
+ dst_name = mkVHDLExtId (bndrToString bndr)
+ genSm = genBuilder len signature (arg_names ++ [dst_name])
+ in return [AST.CSGSm genSm]
else
error $ "VHDL.mkConcSm Incorrect number of arguments to builtin function: " ++ pprString f ++ " Args: " ++ pprString valargs
Nothing -> error $ "Using function from another module that is not a known builtin: " ++ pprString f