import qualified TyCon
import qualified DataCon
import qualified CoreSubst
+import qualified CoreUtils
import Outputable ( showSDoc, ppr )
-- Local imports
-> [(AST.VHDLId, AST.DesignFile)]
createDesignFiles binds =
- (mkVHDLBasicId "types", AST.DesignFile ieee_context [type_package]) :
+ (mkVHDLBasicId "types", AST.DesignFile ieee_context [type_package_dec, type_package_body]) :
map (Arrow.second $ AST.DesignFile full_context) units
where
init_session = VHDLSession Map.empty Map.empty builtin_funcs globalNameTable
(units, final_session) =
State.runState (createLibraryUnits binds) init_session
- ty_decls = map (uncurry AST.TypeDec) $ Map.elems (final_session ^. vsTypes)
+ tyfun_decls = Map.elems (final_session ^.vsTypeFuns)
+ ty_decls = map mktydecl $ Map.elems (final_session ^. vsTypes)
ieee_context = [
AST.Library $ mkVHDLBasicId "IEEE",
mkUseAll ["IEEE", "std_logic_1164"],
full_context =
mkUseAll ["work", "types"]
: ieee_context
- type_package = AST.LUPackageDec $ AST.PackageDec (mkVHDLBasicId "types") (map AST.PDITD ty_decls)
+ type_package_dec = AST.LUPackageDec $ AST.PackageDec (mkVHDLBasicId "types") (ty_decls ++ subProgSpecs)
+ type_package_body = AST.LUPackageBody $ AST.PackageBody typesId (concat tyfun_decls)
+ subProgSpecs = concat (map subProgSpec tyfun_decls)
+ subProgSpec = map (\(AST.SubProgBody spec _ _) -> AST.PDISS spec)
+ mktydecl :: (AST.VHDLId, Either AST.TypeDef AST.SubtypeIn) -> AST.PackageDecItem
+ mktydecl (ty_id, Left ty_def) = AST.PDITD $ AST.TypeDec ty_id ty_def
+ mktydecl (ty_id, Right ty_def) = AST.PDISD $ AST.SubtypeDec ty_id ty_def
-- Create a use foo.bar.all statement. Takes a list of components in the used
-- name. Must contain at least two components
mkConcSm (bndr, app@(CoreSyn.App _ _))= do
let (CoreSyn.Var f, args) = CoreSyn.collectArgs app
case Var.globalIdVarDetails f of
+ IdInfo.DataConWorkId dc ->
+ -- It's a datacon. Create a record from its arguments.
+ -- First, filter out type args. TODO: Is this the best way to do this?
+ -- The types should already have been taken into acocunt when creating
+ -- the signal, so this should probably work...
+ let valargs = filter isValArg args in
+ if all is_var valargs then do
+ labels <- getFieldLabels (CoreUtils.exprType app)
+ let assigns = zipWith mkassign labels valargs
+ let block_id = bndrToVHDLId bndr
+ let block = AST.BlockSm block_id [] (AST.PMapAspect []) [] assigns
+ return $ AST.CSBSm block
+ else
+ error $ "VHDL.mkConcSm Not in normal form: One ore more complex arguments: " ++ pprString args
+ where
+ mkassign :: AST.VHDLId -> CoreExpr -> AST.ConcSm
+ mkassign label (Var arg) =
+ let sel_name = mkSelectedName bndr label in
+ mkUncondAssign (Right sel_name) (varToVHDLExpr arg)
IdInfo.VanillaGlobal -> do
-- It's a global value imported from elsewhere. These can be builting
-- functions.
Just i -> do
labels <- getFieldLabels (Id.idType scrut)
let label = labels!!i
- let scrut_name = AST.NSimple $ bndrToVHDLId scrut
- let sel_suffix = AST.SSimple $ label
- let sel_name = AST.NSelected $ scrut_name AST.:.: sel_suffix
+ let sel_name = mkSelectedName scrut label
let sel_expr = AST.PrimName sel_name
- return $ mkUncondAssign bndr sel_expr
+ return $ mkUncondAssign (Left bndr) sel_expr
Nothing -> error $ "VHDL.mkConcSM Not in normal form: Not a selector case:\n" ++ (pprString expr)
_ -> error $ "VHDL.mkConcSM Not in normal form: Not a selector case:\n" ++ (pprString expr)
-
-- Multiple case alt are be conditional assignments and have only wild
-- binders in the alts and only variables in the case values and a variable
-- for a scrutinee. We check the constructor of the second alt, since the
true_expr = (varToVHDLExpr true)
false_expr = (varToVHDLExpr false)
in
- return $ mkCondAssign bndr cond_expr true_expr false_expr
+ return $ mkCondAssign (Left bndr) cond_expr true_expr false_expr
mkConcSm (_, (Case (Var _) _ _ alts)) = error "VHDL.mkConcSm Not in normal form: Case statement with more than two alternatives"
mkConcSm (_, Case _ _ _ _) = error "VHDL.mkConcSm Not in normal form: Case statement has does not have a simple variable as scrutinee"
-- Create an unconditional assignment statement
mkUncondAssign ::
- CoreBndr -- ^ The signal to assign to
+ Either CoreBndr AST.VHDLName -- ^ The signal to assign to
-> AST.Expr -- ^ The expression to assign
-> AST.ConcSm -- ^ The resulting concurrent statement
-mkUncondAssign bndr expr = mkAssign bndr Nothing expr
+mkUncondAssign dst expr = mkAssign dst Nothing expr
-- Create a conditional assignment statement
mkCondAssign ::
- CoreBndr -- ^ The signal to assign to
+ Either CoreBndr AST.VHDLName -- ^ The signal to assign to
-> AST.Expr -- ^ The condition
-> AST.Expr -- ^ The value when true
-> AST.Expr -- ^ The value when false
-> AST.ConcSm -- ^ The resulting concurrent statement
-mkCondAssign bndr cond true false = mkAssign bndr (Just (cond, true)) false
+mkCondAssign dst cond true false = mkAssign dst (Just (cond, true)) false
-- Create a conditional or unconditional assignment statement
mkAssign ::
- CoreBndr -> -- ^ The signal to assign to
+ Either CoreBndr AST.VHDLName -> -- ^ The signal to assign to
Maybe (AST.Expr , AST.Expr) -> -- ^ Optionally, the condition to test for
-- and the value to assign when true.
AST.Expr -> -- ^ The value to assign when false or no condition
AST.ConcSm -- ^ The resulting concurrent statement
-mkAssign bndr cond false_expr =
+mkAssign dst cond false_expr =
let
-- I'm not 100% how this assignment AST works, but this gets us what we
-- want...
[AST.WhenElse true_wform cond_expr]
Nothing -> []
false_wform = AST.Wform [AST.WformElem false_expr Nothing]
- dst_name = AST.NSimple (bndrToVHDLId bndr)
+ dst_name = case dst of
+ Left bndr -> AST.NSimple (bndrToVHDLId bndr)
+ Right name -> name
assign = dst_name AST.:<==: (AST.ConWforms whenelse false_wform Nothing)
in
AST.CSSASm assign
-
+
+-- Create a record field selector that selects the given label from the record
+-- stored in the given binder.
+mkSelectedName :: CoreBndr -> AST.VHDLId -> AST.VHDLName
+mkSelectedName bndr label =
+ let
+ sel_prefix = AST.NSimple $ bndrToVHDLId bndr
+ sel_suffix = AST.SSimple $ label
+ in
+ AST.NSelected $ sel_prefix AST.:.: sel_suffix
+
-- Finds the field labels for VHDL type generated for the given Core type,
-- which must result in a record type.
getFieldLabels :: Type.Type -> VHDLState [AST.VHDLId]
-- Get the types map, lookup and unpack the VHDL TypeDef
types <- getA vsTypes
case Map.lookup (OrdType ty) types of
- Just (_, AST.TDR (AST.RecordTypeDef elems)) -> return $ map (\(AST.ElementDec id _) -> id) elems
+ Just (_, Left (AST.TDR (AST.RecordTypeDef elems))) -> return $ map (\(AST.ElementDec id _) -> id) elems
_ -> error $ "VHDL.getFieldLabels Type not found or not a record type? This should not happen! Type: " ++ (show ty)
-- Turn a variable reference into a AST expression
Nothing -> error $ "Unsupported Haskell type: " ++ (showSDoc $ ppr ty)
-- Construct a new VHDL type for the given Haskell type.
-construct_vhdl_ty :: Type.Type -> VHDLState (Maybe (AST.TypeMark, AST.TypeDef))
+construct_vhdl_ty :: Type.Type -> VHDLState (Maybe (AST.TypeMark, Either AST.TypeDef AST.SubtypeIn))
construct_vhdl_ty ty = do
case Type.splitTyConApp_maybe ty of
Just (tycon, args) -> do
case name of
"TFVec" -> do
res <- mk_vector_ty (tfvec_len ty) ty
- return $ Just res
+ return $ Just $ (Arrow.second Left) res
"SizedWord" -> do
res <- mk_vector_ty (sized_word_len ty) ty
- return $ Just res
+ return $ Just $ (Arrow.second Left) res
+ "RangedWord" -> do
+ res <- mk_natural_ty 0 (ranged_word_bound ty) ty
+ return $ Just $ (Arrow.second Right) res
-- Create a custom type from this tycon
otherwise -> mk_tycon_ty tycon args
Nothing -> return $ Nothing
-- | Create VHDL type for a custom tycon
-mk_tycon_ty :: TyCon.TyCon -> [Type.Type] -> VHDLState (Maybe (AST.TypeMark, AST.TypeDef))
+mk_tycon_ty :: TyCon.TyCon -> [Type.Type] -> VHDLState (Maybe (AST.TypeMark, Either AST.TypeDef AST.SubtypeIn))
mk_tycon_ty tycon args =
case TyCon.tyConDataCons tycon of
-- Not an algebraic type
-- TODO: Special handling for tuples?
let ty_id = mkVHDLExtId $ nameToString (TyCon.tyConName tycon)
let ty_def = AST.TDR $ AST.RecordTypeDef elems
- return $ Just (ty_id, ty_def)
+ return $ Just (ty_id, Left ty_def)
dcs -> error $ "Only single constructor datatypes supported: " ++ (showSDoc $ ppr tycon)
where
-- Create a subst that instantiates all types passed to the tycon
modA vsTypeFuns (Map.insert (OrdType ty) (genUnconsVectorFuns std_logic_ty ty_id))
return (ty_id, ty_def)
+mk_natural_ty ::
+ Int -- ^ The minimum bound (> 0)
+ -> Int -- ^ The maximum bound (> minimum bound)
+ -> Type.Type -- ^ The Haskell type to create a VHDL type for
+ -> VHDLState (AST.TypeMark, AST.SubtypeIn) -- The typemark created.
+mk_natural_ty min_bound max_bound ty = do
+ let ty_id = mkVHDLExtId $ "nat_" ++ (show min_bound) ++ "_to_" ++ (show max_bound)
+ let ty_def = AST.SubtypeIn naturalTM (Nothing)
+ return (ty_id, ty_def)
+
builtin_types =
Map.fromList [
projects / matthijs / master-project / cλash.git / blobdiff