1 module CLasH.VHDL.VHDLTools where
5 import qualified Data.Either as Either
6 import qualified Data.List as List
7 import qualified Data.Map as Map
8 import qualified Control.Monad as Monad
9 import qualified Control.Arrow as Arrow
10 import qualified Control.Monad.Trans.State as State
11 import qualified Data.Monoid as Monoid
13 import Data.Accessor.MonadState as MonadState
17 import qualified Language.VHDL.AST as AST
22 import qualified OccName
25 import qualified IdInfo
26 import qualified TyCon
28 import qualified DataCon
29 import qualified CoreSubst
32 import CLasH.VHDL.VHDLTypes
33 import CLasH.Translator.TranslatorTypes
34 import CLasH.Utils.Core.CoreTools
35 import CLasH.Utils.Pretty
36 import CLasH.VHDL.Constants
38 -----------------------------------------------------------------------------
39 -- Functions to generate concurrent statements
40 -----------------------------------------------------------------------------
42 -- Create an unconditional assignment statement
44 Either CoreBndr AST.VHDLName -- ^ The signal to assign to
45 -> AST.Expr -- ^ The expression to assign
46 -> AST.ConcSm -- ^ The resulting concurrent statement
47 mkUncondAssign dst expr = mkAssign dst Nothing expr
49 -- Create a conditional assignment statement
51 Either CoreBndr AST.VHDLName -- ^ The signal to assign to
52 -> AST.Expr -- ^ The condition
53 -> AST.Expr -- ^ The value when true
54 -> AST.Expr -- ^ The value when false
55 -> AST.ConcSm -- ^ The resulting concurrent statement
56 mkCondAssign dst cond true false = mkAssign dst (Just (cond, true)) false
58 -- Create a conditional or unconditional assignment statement
60 Either CoreBndr AST.VHDLName -- ^ The signal to assign to
61 -> Maybe (AST.Expr , AST.Expr) -- ^ Optionally, the condition to test for
62 -- and the value to assign when true.
63 -> AST.Expr -- ^ The value to assign when false or no condition
64 -> AST.ConcSm -- ^ The resulting concurrent statement
65 mkAssign dst cond false_expr =
67 -- I'm not 100% how this assignment AST works, but this gets us what we
69 whenelse = case cond of
70 Just (cond_expr, true_expr) ->
72 true_wform = AST.Wform [AST.WformElem true_expr Nothing]
74 [AST.WhenElse true_wform cond_expr]
76 false_wform = AST.Wform [AST.WformElem false_expr Nothing]
77 dst_name = case dst of
78 Left bndr -> AST.NSimple (varToVHDLId bndr)
80 assign = dst_name AST.:<==: (AST.ConWforms whenelse false_wform Nothing)
85 [AST.Expr] -- ^ The argument that are applied to function
86 -> AST.VHDLName -- ^ The binder in which to store the result
87 -> Entity -- ^ The entity to map against.
88 -> [AST.AssocElem] -- ^ The resulting port maps
89 mkAssocElems args res entity =
90 -- Create the actual AssocElems
91 zipWith mkAssocElem ports sigs
93 -- Turn the ports and signals from a map into a flat list. This works,
94 -- since the maps must have an identical form by definition. TODO: Check
96 arg_ports = ent_args entity
97 res_port = ent_res entity
98 -- Extract the id part from the (id, type) tuple
99 ports = map fst (res_port : arg_ports)
100 -- Translate signal numbers into names
101 sigs = (vhdlNameToVHDLExpr res : args)
103 -- | Create an VHDL port -> signal association
104 mkAssocElem :: AST.VHDLId -> AST.Expr -> AST.AssocElem
105 mkAssocElem port signal = Just port AST.:=>: (AST.ADExpr signal)
107 -- | Create an VHDL port -> signal association
108 mkAssocElemIndexed :: AST.VHDLId -> AST.VHDLId -> AST.VHDLId -> AST.AssocElem
109 mkAssocElemIndexed port signal index = Just port AST.:=>: (AST.ADName (AST.NIndexed (AST.IndexedName
110 (AST.NSimple signal) [AST.PrimName $ AST.NSimple index])))
112 -- | Create an aggregate signal
113 mkAggregateSignal :: [AST.Expr] -> AST.Expr
114 mkAggregateSignal x = AST.Aggregate (map (\z -> AST.ElemAssoc Nothing z) x)
117 String -- ^ The portmap label
118 -> AST.VHDLId -- ^ The entity name
119 -> [AST.AssocElem] -- ^ The port assignments
121 mkComponentInst label entity_id portassigns = AST.CSISm compins
123 -- We always have a clock port, so no need to map it anywhere but here
124 clk_port = mkAssocElem clockId (idToVHDLExpr clockId)
125 compins = AST.CompInsSm (mkVHDLExtId label) (AST.IUEntity (AST.NSimple entity_id)) (AST.PMapAspect (portassigns ++ [clk_port]))
127 -----------------------------------------------------------------------------
128 -- Functions to generate VHDL Exprs
129 -----------------------------------------------------------------------------
131 varToVHDLExpr :: Var.Var -> TypeSession AST.Expr
132 varToVHDLExpr var = do
133 case Id.isDataConWorkId_maybe var of
134 Just dc -> return $ dataconToVHDLExpr dc
135 -- This is a dataconstructor.
136 -- Not a datacon, just another signal. Perhaps we should check for
137 -- local/global here as well?
138 -- Sadly so.. tfp decimals are types, not data constructors, but instances
139 -- should still be translated to integer literals. It is probebly not the
140 -- best solution to translate them here.
141 -- FIXME: Find a better solution for translating instances of tfp integers
143 let ty = Var.varType var
144 case Type.splitTyConApp_maybe ty of
145 Just (tycon, args) ->
146 case Name.getOccString (TyCon.tyConName tycon) of
149 return $ AST.PrimLit $ (show len)
150 otherwise -> return $ AST.PrimName $ AST.NSimple $ varToVHDLId var
152 -- Turn a VHDLName into an AST expression
153 vhdlNameToVHDLExpr = AST.PrimName
155 -- Turn a VHDL Id into an AST expression
156 idToVHDLExpr = vhdlNameToVHDLExpr . AST.NSimple
158 -- Turn a Core expression into an AST expression
159 exprToVHDLExpr core = varToVHDLExpr (exprToVar core)
161 -- Turn a alternative constructor into an AST expression. For
162 -- dataconstructors, this is only the constructor itself, not any arguments it
163 -- has. Should not be called with a DEFAULT constructor.
164 altconToVHDLExpr :: CoreSyn.AltCon -> AST.Expr
165 altconToVHDLExpr (DataAlt dc) = dataconToVHDLExpr dc
167 altconToVHDLExpr (LitAlt _) = error "\nVHDL.conToVHDLExpr: Literals not support in case alternatives yet"
168 altconToVHDLExpr DEFAULT = error "\nVHDL.conToVHDLExpr: DEFAULT alternative should not occur here!"
170 -- Turn a datacon (without arguments!) into a VHDL expression.
171 dataconToVHDLExpr :: DataCon.DataCon -> AST.Expr
172 dataconToVHDLExpr dc = AST.PrimLit lit
174 tycon = DataCon.dataConTyCon dc
175 tyname = TyCon.tyConName tycon
176 dcname = DataCon.dataConName dc
177 lit = case Name.getOccString tyname of
178 -- TODO: Do something more robust than string matching
179 "Bit" -> case Name.getOccString dcname of "High" -> "'1'"; "Low" -> "'0'"
180 "Bool" -> case Name.getOccString dcname of "True" -> "true"; "False" -> "false"
182 -----------------------------------------------------------------------------
183 -- Functions dealing with names, variables and ids
184 -----------------------------------------------------------------------------
186 -- Creates a VHDL Id from a binder
190 varToVHDLId = mkVHDLExtId . varToString
192 -- Creates a VHDL Name from a binder
196 varToVHDLName = AST.NSimple . varToVHDLId
198 -- Extracts the binder name as a String
202 varToString = OccName.occNameString . Name.nameOccName . Var.varName
204 -- Get the string version a Var's unique
205 varToStringUniq :: Var.Var -> String
206 varToStringUniq = show . Var.varUnique
208 -- Extracts the string version of the name
209 nameToString :: Name.Name -> String
210 nameToString = OccName.occNameString . Name.nameOccName
212 -- Shortcut for Basic VHDL Ids.
213 -- Can only contain alphanumerics and underscores. The supplied string must be
214 -- a valid basic id, otherwise an error value is returned. This function is
215 -- not meant to be passed identifiers from a source file, use mkVHDLExtId for
217 mkVHDLBasicId :: String -> AST.VHDLId
219 AST.unsafeVHDLBasicId $ (strip_multiscore . strip_leading . strip_invalid) s
221 -- Strip invalid characters.
222 strip_invalid = filter (`elem` ['A'..'Z'] ++ ['a'..'z'] ++ ['0'..'9'] ++ "_.")
223 -- Strip leading numbers and underscores
224 strip_leading = dropWhile (`elem` ['0'..'9'] ++ "_")
225 -- Strip multiple adjacent underscores
226 strip_multiscore = concat . map (\cs ->
232 -- Shortcut for Extended VHDL Id's. These Id's can contain a lot more
233 -- different characters than basic ids, but can never be used to refer to
235 -- Use extended Ids for any values that are taken from the source file.
236 mkVHDLExtId :: String -> AST.VHDLId
238 AST.unsafeVHDLExtId $ strip_invalid s
240 -- Allowed characters, taken from ForSyde's mkVHDLExtId
241 allowed = ['A'..'Z'] ++ ['a'..'z'] ++ ['0'..'9'] ++ " \"#&\\'()*+,./:;<=>_|!$%@?[]^`{}~-"
242 strip_invalid = filter (`elem` allowed)
244 -- Create a record field selector that selects the given label from the record
245 -- stored in the given binder.
246 mkSelectedName :: AST.VHDLName -> AST.VHDLId -> AST.VHDLName
247 mkSelectedName name label =
248 AST.NSelected $ name AST.:.: (AST.SSimple label)
250 -- Create an indexed name that selects a given element from a vector.
251 mkIndexedName :: AST.VHDLName -> AST.Expr -> AST.VHDLName
252 -- Special case for already indexed names. Just add an index
253 mkIndexedName (AST.NIndexed (AST.IndexedName name indexes)) index =
254 AST.NIndexed (AST.IndexedName name (indexes++[index]))
255 -- General case for other names
256 mkIndexedName name index = AST.NIndexed (AST.IndexedName name [index])
258 -----------------------------------------------------------------------------
259 -- Functions dealing with VHDL types
260 -----------------------------------------------------------------------------
262 -- | Maps the string name (OccName) of a type to the corresponding VHDL type,
263 -- for a few builtin types.
266 ("Bit", std_logicTM),
267 ("Bool", booleanTM), -- TysWiredIn.boolTy
271 -- Translate a Haskell type to a VHDL type, generating a new type if needed.
272 -- Returns an error value, using the given message, when no type could be
274 vhdl_ty :: String -> Type.Type -> TypeSession AST.TypeMark
276 tm_either <- vhdl_ty_either ty
278 Right tm -> return tm
279 Left err -> error $ msg ++ "\n" ++ err
281 -- Translate a Haskell type to a VHDL type, generating a new type if needed.
282 -- Returns either an error message or the resulting type.
283 vhdl_ty_either :: Type.Type -> TypeSession (Either String AST.TypeMark)
284 vhdl_ty_either ty = do
285 typemap <- getA tsTypes
286 htype_either <- mkHType ty
290 let builtin_ty = do -- See if this is a tycon and lookup its name
291 (tycon, args) <- Type.splitTyConApp_maybe ty
292 let name = Name.getOccString (TyCon.tyConName tycon)
293 Map.lookup name builtin_types
294 -- If not a builtin type, try the custom types
295 let existing_ty = (fmap fst) $ Map.lookup htype typemap
296 case Monoid.getFirst $ Monoid.mconcat (map Monoid.First [builtin_ty, existing_ty]) of
297 -- Found a type, return it
298 Just t -> return (Right t)
299 -- No type yet, try to construct it
301 newty_maybe <- (construct_vhdl_ty ty)
303 Right (ty_id, ty_def) -> do
304 -- TODO: Check name uniqueness
305 modA tsTypes (Map.insert htype (ty_id, ty_def))
306 modA tsTypeDecls (\typedefs -> typedefs ++ [mktydecl (ty_id, ty_def)])
308 Left err -> return $ Left $
309 "VHDLTools.vhdl_ty: Unsupported Haskell type: " ++ pprString ty ++ "\n"
311 -- Error when constructing htype
312 Left err -> return $ Left err
314 -- Construct a new VHDL type for the given Haskell type. Returns an error
315 -- message or the resulting typemark and typedef.
316 construct_vhdl_ty :: Type.Type -> TypeSession (Either String (AST.TypeMark, Either AST.TypeDef AST.SubtypeIn))
317 construct_vhdl_ty ty = do
318 case Type.splitTyConApp_maybe ty of
319 Just (tycon, args) -> do
320 let name = Name.getOccString (TyCon.tyConName tycon)
322 "TFVec" -> mk_vector_ty ty
323 "SizedWord" -> mk_unsigned_ty ty
324 "SizedInt" -> mk_signed_ty ty
326 bound <- tfp_to_int (ranged_word_bound_ty ty)
327 mk_natural_ty 0 bound
328 -- Create a custom type from this tycon
329 otherwise -> mk_tycon_ty ty tycon args
330 Nothing -> return (Left $ "VHDLTools.construct_vhdl_ty: Cannot create type for non-tycon type: " ++ pprString ty ++ "\n")
332 -- | Create VHDL type for a custom tycon
333 mk_tycon_ty :: Type.Type -> TyCon.TyCon -> [Type.Type] -> TypeSession (Either String (AST.TypeMark, Either AST.TypeDef AST.SubtypeIn))
334 mk_tycon_ty ty tycon args =
335 case TyCon.tyConDataCons tycon of
336 -- Not an algebraic type
337 [] -> return (Left $ "VHDLTools.mk_tycon_ty: Only custom algebraic types are supported: " ++ pprString tycon ++ "\n")
339 let arg_tys = DataCon.dataConRepArgTys dc
340 -- TODO: CoreSubst docs say each Subs can be applied only once. Is this a
341 -- violation? Or does it only mean not to apply it again to the same
343 let real_arg_tys = map (CoreSubst.substTy subst) arg_tys
344 elem_tys_either <- mapM vhdl_ty_either real_arg_tys
345 case Either.partitionEithers elem_tys_either of
346 -- No errors in element types
348 let elems = zipWith AST.ElementDec recordlabels elem_tys
349 -- For a single construct datatype, build a record with one field for
351 -- TODO: Add argument type ids to this, to ensure uniqueness
352 -- TODO: Special handling for tuples?
353 let elem_names = concat $ map prettyShow elem_tys
354 let ty_id = mkVHDLExtId $ nameToString (TyCon.tyConName tycon) ++ elem_names
355 let ty_def = AST.TDR $ AST.RecordTypeDef elems
356 let tupshow = mkTupleShow elem_tys ty_id
357 modA tsTypeFuns $ Map.insert (OrdType ty, showIdString) (showId, tupshow)
358 return $ Right (ty_id, Left ty_def)
359 -- There were errors in element types
360 (errors, _) -> return $ Left $
361 "VHDLTools.mk_tycon_ty: Can not construct type for: " ++ pprString tycon ++ "\n because no type can be construced for some of the arguments.\n"
363 dcs -> return $ Left $ "VHDLTools.mk_tycon_ty: Only single constructor datatypes supported: " ++ pprString tycon ++ "\n"
365 -- Create a subst that instantiates all types passed to the tycon
366 -- TODO: I'm not 100% sure that this is the right way to do this. It seems
367 -- to work so far, though..
368 tyvars = TyCon.tyConTyVars tycon
369 subst = CoreSubst.extendTvSubstList CoreSubst.emptySubst (zip tyvars args)
370 -- Generate a bunch of labels for fields of a record
371 recordlabels = map (\c -> mkVHDLBasicId [c]) ['A'..'Z']
373 -- | Create a VHDL vector type
375 Type.Type -- ^ The Haskell type of the Vector
376 -> TypeSession (Either String (AST.TypeMark, Either AST.TypeDef AST.SubtypeIn))
377 -- ^ An error message or The typemark created.
380 types_map <- getA tsTypes
382 let (nvec_l, nvec_el) = Type.splitAppTy ty
383 let (nvec, leng) = Type.splitAppTy nvec_l
384 let vec_ty = Type.mkAppTy nvec nvec_el
385 len <- tfp_to_int (tfvec_len_ty ty)
386 let el_ty = tfvec_elem ty
387 el_ty_tm_either <- vhdl_ty_either el_ty
388 case el_ty_tm_either of
389 -- Could create element type
391 let ty_id = mkVHDLExtId $ "vector-"++ (AST.fromVHDLId el_ty_tm) ++ "-0_to_" ++ (show len)
392 let range = AST.ConstraintIndex $ AST.IndexConstraint [AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (len - 1))]
393 let existing_elem_ty = (fmap fst) $ Map.lookup (StdType $ OrdType vec_ty) types_map
394 case existing_elem_ty of
396 let ty_def = AST.SubtypeIn t (Just range)
397 return (Right (ty_id, Right ty_def))
399 let vec_id = mkVHDLExtId $ "vector_" ++ (AST.fromVHDLId el_ty_tm)
400 let vec_def = AST.TDA $ AST.UnconsArrayDef [tfvec_indexTM] el_ty_tm
401 modA tsTypes (Map.insert (StdType $ OrdType vec_ty) (vec_id, (Left vec_def)))
402 modA tsTypeDecls (\typedefs -> typedefs ++ [mktydecl (vec_id, (Left vec_def))])
403 let vecShowFuns = mkVectorShow el_ty_tm vec_id
404 mapM_ (\(id, subprog) -> modA tsTypeFuns $ Map.insert (OrdType vec_ty, id) ((mkVHDLExtId id), subprog)) vecShowFuns
405 let ty_def = AST.SubtypeIn vec_id (Just range)
406 return (Right (ty_id, Right ty_def))
407 -- Could not create element type
408 Left err -> return $ Left $
409 "VHDLTools.mk_vector_ty: Can not construct vectortype for elementtype: " ++ pprString el_ty ++ "\n"
413 Int -- ^ The minimum bound (> 0)
414 -> Int -- ^ The maximum bound (> minimum bound)
415 -> TypeSession (Either String (AST.TypeMark, Either AST.TypeDef AST.SubtypeIn))
416 -- ^ An error message or The typemark created.
417 mk_natural_ty min_bound max_bound = do
418 let ty_id = mkVHDLExtId $ "nat_" ++ (show min_bound) ++ "_to_" ++ (show max_bound)
419 let range = AST.ConstraintRange $ AST.SubTypeRange (AST.PrimLit $ (show min_bound)) (AST.PrimLit $ (show max_bound))
420 let ty_def = AST.SubtypeIn naturalTM (Just range)
421 return (Right (ty_id, Right ty_def))
424 Type.Type -- ^ Haskell type of the unsigned integer
425 -> TypeSession (Either String (AST.TypeMark, Either AST.TypeDef AST.SubtypeIn))
426 mk_unsigned_ty ty = do
427 size <- tfp_to_int (sized_word_len_ty ty)
428 let ty_id = mkVHDLExtId $ "unsigned_" ++ show (size - 1)
429 let range = AST.ConstraintIndex $ AST.IndexConstraint [AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (size - 1))]
430 let ty_def = AST.SubtypeIn unsignedTM (Just range)
431 let unsignedshow = mkIntegerShow ty_id
432 modA tsTypeFuns $ Map.insert (OrdType ty, showIdString) (showId, unsignedshow)
433 return (Right (ty_id, Right ty_def))
436 Type.Type -- ^ Haskell type of the signed integer
437 -> TypeSession (Either String (AST.TypeMark, Either AST.TypeDef AST.SubtypeIn))
439 size <- tfp_to_int (sized_int_len_ty ty)
440 let ty_id = mkVHDLExtId $ "signed_" ++ show (size - 1)
441 let range = AST.ConstraintIndex $ AST.IndexConstraint [AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (size - 1))]
442 let ty_def = AST.SubtypeIn signedTM (Just range)
443 let signedshow = mkIntegerShow ty_id
444 modA tsTypeFuns $ Map.insert (OrdType ty, showIdString) (showId, signedshow)
445 return (Right (ty_id, Right ty_def))
447 -- Finds the field labels for VHDL type generated for the given Core type,
448 -- which must result in a record type.
449 getFieldLabels :: Type.Type -> TypeSession [AST.VHDLId]
450 getFieldLabels ty = do
451 -- Ensure that the type is generated (but throw away it's VHDLId)
452 let error_msg = "\nVHDLTools.getFieldLabels: Can not get field labels, because: " ++ pprString ty ++ "can not be generated."
454 -- Get the types map, lookup and unpack the VHDL TypeDef
455 types <- getA tsTypes
456 -- Assume the type for which we want labels is really translatable
457 Right htype <- mkHType ty
458 case Map.lookup htype types of
459 Just (_, Left (AST.TDR (AST.RecordTypeDef elems))) -> return $ map (\(AST.ElementDec id _) -> id) elems
460 _ -> error $ "\nVHDL.getFieldLabels: Type not found or not a record type? This should not happen! Type: " ++ (show ty)
462 mktydecl :: (AST.VHDLId, Either AST.TypeDef AST.SubtypeIn) -> AST.PackageDecItem
463 mktydecl (ty_id, Left ty_def) = AST.PDITD $ AST.TypeDec ty_id ty_def
464 mktydecl (ty_id, Right ty_def) = AST.PDISD $ AST.SubtypeDec ty_id ty_def
466 mkHType :: Type.Type -> TypeSession (Either String HType)
468 -- FIXME: Do we really need to do this here again?
469 let builtin_ty = do -- See if this is a tycon and lookup its name
470 (tycon, args) <- Type.splitTyConApp_maybe ty
471 let name = Name.getOccString (TyCon.tyConName tycon)
472 Map.lookup name builtin_types
475 return $ Right $ BuiltinType $ prettyShow typ
477 case Type.splitTyConApp_maybe ty of
478 Just (tycon, args) -> do
479 let name = Name.getOccString (TyCon.tyConName tycon)
482 let el_ty = tfvec_elem ty
483 elem_htype_either <- mkHType el_ty
484 case elem_htype_either of
485 -- Could create element type
486 Right elem_htype -> do
487 len <- tfp_to_int (tfvec_len_ty ty)
488 return $ Right $ VecType len elem_htype
489 -- Could not create element type
490 Left err -> return $ Left $
491 "VHDLTools.mkHType: Can not construct vectortype for elementtype: " ++ pprString el_ty ++ "\n"
494 len <- tfp_to_int (sized_word_len_ty ty)
495 return $ Right $ SizedWType len
497 len <- tfp_to_int (sized_word_len_ty ty)
498 return $ Right $ SizedIType len
500 bound <- tfp_to_int (ranged_word_bound_ty ty)
501 return $ Right $ RangedWType bound
503 mkTyConHType tycon args
504 Nothing -> return $ Right $ StdType $ OrdType ty
506 -- FIXME: Do we really need to do this here again?
507 mkTyConHType :: TyCon.TyCon -> [Type.Type] -> TypeSession (Either String HType)
508 mkTyConHType tycon args =
509 case TyCon.tyConDataCons tycon of
510 -- Not an algebraic type
511 [] -> return $ Left $ "VHDLTools.mkHType: Only custom algebraic types are supported: " ++ pprString tycon ++ "\n"
513 let arg_tys = DataCon.dataConRepArgTys dc
514 let real_arg_tys = map (CoreSubst.substTy subst) arg_tys
515 elem_htys_either <- mapM mkHType real_arg_tys
516 case Either.partitionEithers elem_htys_either of
517 -- No errors in element types
518 ([], elem_htys) -> do
519 return $ Right $ ADTType (nameToString (TyCon.tyConName tycon)) elem_htys
520 -- There were errors in element types
521 (errors, _) -> return $ Left $
522 "VHDLTools.mkHType: Can not construct type for: " ++ pprString tycon ++ "\n because no type can be construced for some of the arguments.\n"
524 dcs -> return $ Left $ "VHDLTools.mkHType: Only single constructor datatypes supported: " ++ pprString tycon ++ "\n"
526 tyvars = TyCon.tyConTyVars tycon
527 subst = CoreSubst.extendTvSubstList CoreSubst.emptySubst (zip tyvars args)
529 -- Is the given type representable at runtime?
530 isReprType :: Type.Type -> TypeSession Bool
532 ty_either <- vhdl_ty_either ty
533 return $ case ty_either of
538 tfp_to_int :: Type.Type -> TypeSession Int
540 hscenv <- getA tsHscEnv
541 let norm_ty = normalise_tfp_int hscenv ty
542 case Type.splitTyConApp_maybe norm_ty of
543 Just (tycon, args) -> do
544 let name = Name.getOccString (TyCon.tyConName tycon)
547 len <- tfp_to_int' ty
550 modA tsTfpInts (Map.insert (OrdType norm_ty) (-1))
551 return $ error ("Callin tfp_to_int on non-dec:" ++ (show ty))
552 Nothing -> return $ error ("Callin tfp_to_int on non-dec:" ++ (show ty))
554 tfp_to_int' :: Type.Type -> TypeSession Int
556 lens <- getA tsTfpInts
557 hscenv <- getA tsHscEnv
558 let norm_ty = normalise_tfp_int hscenv ty
559 let existing_len = Map.lookup (OrdType norm_ty) lens
561 Just len -> return len
563 let new_len = eval_tfp_int hscenv ty
564 modA tsTfpInts (Map.insert (OrdType norm_ty) (new_len))
568 [AST.TypeMark] -- ^ type of each tuple element
569 -> AST.TypeMark -- ^ type of the tuple
571 mkTupleShow elemTMs tupleTM = AST.SubProgBody showSpec [] [showExpr]
573 tupPar = AST.unsafeVHDLBasicId "tup"
574 showSpec = AST.Function showId [AST.IfaceVarDec tupPar tupleTM] stringTM
575 showExpr = AST.ReturnSm (Just $
576 AST.PrimLit "'('" AST.:&: showMiddle AST.:&: AST.PrimLit "')'")
578 showMiddle = foldr1 (\e1 e2 -> e1 AST.:&: AST.PrimLit "','" AST.:&: e2) $
579 map ((genExprFCall showId).
582 (AST.NSimple tupPar AST.:.:).
584 (take tupSize recordlabels)
585 recordlabels = map (\c -> mkVHDLBasicId [c]) ['A'..'Z']
586 tupSize = length elemTMs
589 AST.TypeMark -- ^ elemtype
590 -> AST.TypeMark -- ^ vectype
591 -> [(String,AST.SubProgBody)]
592 mkVectorShow elemTM vectorTM =
593 [ (headId, AST.SubProgBody headSpec [] [headExpr])
594 , (tailId, AST.SubProgBody tailSpec [AST.SPVD tailVar] [tailExpr, tailRet])
595 , (showIdString, AST.SubProgBody showSpec [AST.SPSB doShowDef] [showRet])
598 vecPar = AST.unsafeVHDLBasicId "vec"
599 resId = AST.unsafeVHDLBasicId "res"
600 headSpec = AST.Function (mkVHDLExtId headId) [AST.IfaceVarDec vecPar vectorTM] elemTM
602 headExpr = AST.ReturnSm (Just $ (AST.PrimName $ AST.NIndexed (AST.IndexedName
603 (AST.NSimple vecPar) [AST.PrimLit "0"])))
604 vecSlice init last = AST.PrimName (AST.NSlice
607 (AST.ToRange init last)))
608 tailSpec = AST.Function (mkVHDLExtId tailId) [AST.IfaceVarDec vecPar vectorTM] vectorTM
609 -- variable res : fsvec_x (0 to vec'length-2);
612 (AST.SubtypeIn vectorTM
613 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
614 [AST.ToRange (AST.PrimLit "0")
615 (AST.PrimName (AST.NAttribute $
616 AST.AttribName (AST.NSimple vecPar) (AST.NSimple $ mkVHDLBasicId lengthId) Nothing) AST.:-:
617 (AST.PrimLit "2")) ]))
619 -- res AST.:= vec(1 to vec'length-1)
620 tailExpr = AST.NSimple resId AST.:= (vecSlice
622 (AST.PrimName (AST.NAttribute $
623 AST.AttribName (AST.NSimple vecPar) (AST.NSimple $ mkVHDLBasicId lengthId) Nothing)
624 AST.:-: AST.PrimLit "1"))
625 tailRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
626 showSpec = AST.Function showId [AST.IfaceVarDec vecPar vectorTM] stringTM
627 doShowId = AST.unsafeVHDLExtId "doshow"
628 doShowDef = AST.SubProgBody doShowSpec [] [doShowRet]
629 where doShowSpec = AST.Function doShowId [AST.IfaceVarDec vecPar vectorTM]
632 -- when 0 => return "";
633 -- when 1 => return head(vec);
634 -- when others => return show(head(vec)) & ',' &
635 -- doshow (tail(vec));
638 AST.CaseSm (AST.PrimName (AST.NAttribute $
639 AST.AttribName (AST.NSimple vecPar) (AST.NSimple $ mkVHDLBasicId lengthId) Nothing))
640 [AST.CaseSmAlt [AST.ChoiceE $ AST.PrimLit "0"]
641 [AST.ReturnSm (Just $ AST.PrimLit "\"\"")],
642 AST.CaseSmAlt [AST.ChoiceE $ AST.PrimLit "1"]
643 [AST.ReturnSm (Just $
645 (genExprFCall (mkVHDLExtId headId) (AST.PrimName $ AST.NSimple vecPar)) )],
646 AST.CaseSmAlt [AST.Others]
647 [AST.ReturnSm (Just $
649 (genExprFCall (mkVHDLExtId headId) (AST.PrimName $ AST.NSimple vecPar)) AST.:&:
650 AST.PrimLit "','" AST.:&:
651 genExprFCall doShowId
652 (genExprFCall (mkVHDLExtId tailId) (AST.PrimName $ AST.NSimple vecPar)) ) ]]
653 -- return '<' & doshow(vec) & '>';
654 showRet = AST.ReturnSm (Just $ AST.PrimLit "'<'" AST.:&:
655 genExprFCall doShowId (AST.PrimName $ AST.NSimple vecPar) AST.:&:
659 AST.TypeMark -- ^ The specific signed
661 mkIntegerShow signedTM = AST.SubProgBody showSpec [] [showExpr]
663 signedPar = AST.unsafeVHDLBasicId "sint"
664 showSpec = AST.Function showId [AST.IfaceVarDec signedPar signedTM] stringTM
665 showExpr = AST.ReturnSm (Just $
666 AST.PrimName $ AST.NAttribute $ AST.AttribName (AST.NSimple integerId)
667 (AST.NIndexed $ AST.IndexedName (AST.NSimple imageId) [signToInt]) Nothing )
669 signToInt = genExprFCall (mkVHDLBasicId toIntegerId) (AST.PrimName $ AST.NSimple $ signedPar)
671 mkBuiltInShow :: [AST.SubProgBody]
672 mkBuiltInShow = [ AST.SubProgBody showBitSpec [] [showBitExpr]
673 , AST.SubProgBody showBoolSpec [] [showBoolExpr]
676 bitPar = AST.unsafeVHDLBasicId "s"
677 boolPar = AST.unsafeVHDLBasicId "b"
678 showBitSpec = AST.Function showId [AST.IfaceVarDec bitPar std_logicTM] stringTM
679 -- if s = '1' then return "'1'" else return "'0'"
680 showBitExpr = AST.IfSm (AST.PrimName (AST.NSimple bitPar) AST.:=: AST.PrimLit "'1'")
681 [AST.ReturnSm (Just $ AST.PrimLit "\"High\"")]
683 (Just $ AST.Else [AST.ReturnSm (Just $ AST.PrimLit "\"Low\"")])
684 showBoolSpec = AST.Function showId [AST.IfaceVarDec boolPar booleanTM] stringTM
685 -- if b then return "True" else return "False"
686 showBoolExpr = AST.IfSm (AST.PrimName (AST.NSimple boolPar))
687 [AST.ReturnSm (Just $ AST.PrimLit "\"True\"")]
689 (Just $ AST.Else [AST.ReturnSm (Just $ AST.PrimLit "\"False\"")])
691 genExprFCall :: AST.VHDLId -> AST.Expr -> AST.Expr
692 genExprFCall fName args =
693 AST.PrimFCall $ AST.FCall (AST.NSimple fName) $
694 map (\exp -> Nothing AST.:=>: AST.ADExpr exp) [args]
696 genExprPCall2 :: AST.VHDLId -> AST.Expr -> AST.Expr -> AST.SeqSm
697 genExprPCall2 entid arg1 arg2 =
698 AST.ProcCall (AST.NSimple entid) $
699 map (\exp -> Nothing AST.:=>: AST.ADExpr exp) [arg1,arg2]
701 mkSigDec :: CoreSyn.CoreBndr -> TranslatorSession (Maybe AST.SigDec)
703 if True then do --isInternalSigUse use || isStateSigUse use then do
704 let error_msg = "\nVHDL.mkSigDec: Can not make signal declaration for type: \n" ++ pprString bndr
705 type_mark <- MonadState.lift tsType $ vhdl_ty error_msg (Var.varType bndr)
706 return $ Just (AST.SigDec (varToVHDLId bndr) type_mark Nothing)