+-- | Transforms a signal definition into a VHDL concurrent statement
+mkConcSm ::
+ [(SignalId, SignalInfo)] -- | The signals in the current architecture
+ -> SigDef -- | The signal definition
+ -> VHDLState AST.ConcSm -- | The corresponding VHDL component instantiation.
+
+mkConcSm sigs (FApp hsfunc args res) = do
+ 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 args res entity
+ return $ AST.CSISm $ AST.CompInsSm (mkVHDLId label) (AST.IUEntity (AST.NSimple entity_id)) (AST.PMapAspect portmaps)
+
+mkConcSm sigs (UncondDef src dst) = do
+ let src_expr = vhdl_expr src
+ let src_wform = AST.Wform [AST.WformElem src_expr Nothing]
+ let dst_name = AST.NSimple (getSignalId $ signalInfo sigs dst)
+ let assign = dst_name AST.:<==: (AST.ConWforms [] src_wform Nothing)
+ return $ AST.CSSASm assign
+ where
+ vhdl_expr (Left id) = mkIdExpr sigs id
+ vhdl_expr (Right expr) =
+ case expr of
+ (EqLit id lit) ->
+ (mkIdExpr sigs id) AST.:=: (AST.PrimLit lit)
+ (Literal lit) ->
+ AST.PrimLit lit
+ (Eq a b) ->
+ (mkIdExpr sigs a) AST.:=: (mkIdExpr sigs b)
+
+mkConcSm sigs (CondDef cond true false dst) = do
+ let cond_expr = mkIdExpr sigs cond
+ let true_expr = mkIdExpr sigs true
+ let false_expr = mkIdExpr sigs false
+ let false_wform = AST.Wform [AST.WformElem false_expr Nothing]
+ let true_wform = AST.Wform [AST.WformElem true_expr Nothing]
+ let whenelse = AST.WhenElse true_wform cond_expr
+ let dst_name = AST.NSimple (getSignalId $ signalInfo sigs dst)
+ let assign = dst_name AST.:<==: (AST.ConWforms [whenelse] false_wform Nothing)
+ return $ AST.CSSASm assign
+
+-- | Turn a SignalId into a VHDL Expr
+mkIdExpr :: [(SignalId, SignalInfo)] -> SignalId -> AST.Expr
+mkIdExpr sigs id =
+ let src_name = AST.NSimple (getSignalId $ signalInfo sigs id) in
+ AST.PrimName src_name