4 import qualified Control.Monad as Monad
5 import qualified Data.Map as Map
7 import qualified Data.Either as Either
12 import qualified ForSyDe.Backend.VHDL.AST as AST
18 import qualified IdInfo
27 -----------------------------------------------------------------------------
28 -- Functions to generate VHDL for builtin functions
29 -----------------------------------------------------------------------------
31 -- | A function to wrap a builder-like function that expects its arguments to
34 (dst -> func -> [AST.Expr] -> res)
35 -> (dst -> func -> [Either CoreSyn.CoreExpr AST.Expr] -> res)
36 genExprArgs wrap dst func args = wrap dst func args'
37 where args' = map (either (varToVHDLExpr.exprToVar) id) args
39 -- | A function to wrap a builder-like function that expects its arguments to
42 (dst -> func -> [Var.Var] -> res)
43 -> (dst -> func -> [Either CoreSyn.CoreExpr AST.Expr] -> res)
44 genVarArgs wrap dst func args = wrap dst func args'
46 args' = map exprToVar exprargs
47 -- Check (rather crudely) that all arguments are CoreExprs
48 (exprargs, []) = Either.partitionEithers args
50 -- | A function to wrap a builder-like function that produces an expression
51 -- and expects it to be assigned to the destination.
53 ((Either CoreSyn.CoreBndr AST.VHDLName) -> func -> [arg] -> VHDLSession AST.Expr)
54 -> ((Either CoreSyn.CoreBndr AST.VHDLName) -> func -> [arg] -> VHDLSession [AST.ConcSm])
55 genExprRes wrap dst func args = do
56 expr <- wrap dst func args
57 return $ [mkUncondAssign dst expr]
59 -- | Generate a binary operator application. The first argument should be a
60 -- constructor from the AST.Expr type, e.g. AST.And.
61 genOperator2 :: (AST.Expr -> AST.Expr -> AST.Expr) -> BuiltinBuilder
62 genOperator2 op = genExprArgs $ genExprRes (genOperator2' op)
63 genOperator2' :: (AST.Expr -> AST.Expr -> AST.Expr) -> dst -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
64 genOperator2' op _ f [arg1, arg2] = return $ op arg1 arg2
66 -- | Generate a unary operator application
67 genOperator1 :: (AST.Expr -> AST.Expr) -> BuiltinBuilder
68 genOperator1 op = genExprArgs $ genExprRes (genOperator1' op)
69 genOperator1' :: (AST.Expr -> AST.Expr) -> dst -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
70 genOperator1' op _ f [arg] = return $ op arg
72 -- | Generate a function call from the destination binder, function name and a
73 -- list of expressions (its arguments)
74 genFCall :: BuiltinBuilder
75 genFCall = genExprArgs $ genExprRes genFCall'
76 genFCall' :: Either CoreSyn.CoreBndr AST.VHDLName -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
77 genFCall' (Left res) f args = do
78 let fname = varToString f
79 let el_ty = (tfvec_elem . Var.varType) res
80 id <- vectorFunId el_ty fname
81 return $ AST.PrimFCall $ AST.FCall (AST.NSimple id) $
82 map (\exp -> Nothing AST.:=>: AST.ADExpr exp) args
83 genFCall' (Right name) _ _ = error $ "Cannot generate builtin function call assigned to a VHDLName: " ++ show name
85 -- | Generate a generate statement for the builtin function "map"
86 genMap :: BuiltinBuilder
87 genMap = genVarArgs genMap'
88 genMap' :: (Either CoreSyn.CoreBndr AST.VHDLName) -> CoreSyn.CoreBndr -> [Var.Var] -> VHDLSession [AST.ConcSm]
89 genMap' (Left res) f [mapped_f, arg] =
91 -- Setup the generate scheme
92 len = (tfvec_len . Var.varType) res
93 -- TODO: Use something better than varToString
94 label = mkVHDLExtId ("mapVector" ++ (varToString res))
95 n_id = mkVHDLBasicId "n"
96 n_expr = idToVHDLExpr n_id
97 range = AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (len-1))
98 genScheme = AST.ForGn n_id range
100 -- Create the content of the generate statement: Applying the mapped_f to
101 -- each of the elements in arg, storing to each element in res
102 resname = mkIndexedName (varToVHDLName res) n_expr
103 argexpr = vhdlNameToVHDLExpr $ mkIndexedName (varToVHDLName arg) n_expr
105 app_concsms <- genApplication (Right resname) mapped_f [Right argexpr]
106 -- Return the generate statement
107 return [AST.CSGSm $ AST.GenerateSm label genScheme [] app_concsms]
109 genMap' (Right name) _ _ = error $ "Cannot generate map function call assigned to a VHDLName: " ++ show name
111 genZipWith :: BuiltinBuilder
112 genZipWith = genVarArgs genZipWith'
113 genZipWith' :: (Either CoreSyn.CoreBndr AST.VHDLName) -> CoreSyn.CoreBndr -> [Var.Var] -> VHDLSession [AST.ConcSm]
114 genZipWith' (Left res) f args@[zipped_f, arg1, arg2] =
116 -- Setup the generate scheme
117 len = (tfvec_len . Var.varType) res
118 -- TODO: Use something better than varToString
119 label = mkVHDLExtId ("zipWithVector" ++ (varToString res))
120 n_id = mkVHDLBasicId "n"
121 n_expr = idToVHDLExpr n_id
122 range = AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (len-1))
123 genScheme = AST.ForGn n_id range
125 -- Create the content of the generate statement: Applying the zipped_f to
126 -- each of the elements in arg1 and arg2, storing to each element in res
127 resname = mkIndexedName (varToVHDLName res) n_expr
128 argexpr1 = vhdlNameToVHDLExpr $ mkIndexedName (varToVHDLName arg1) n_expr
129 argexpr2 = vhdlNameToVHDLExpr $ mkIndexedName (varToVHDLName arg2) n_expr
131 app_concsms <- genApplication (Right resname) zipped_f [Right argexpr1, Right argexpr2]
132 -- Return the generate functions
133 return [AST.CSGSm $ AST.GenerateSm label genScheme [] app_concsms]
135 genFoldl :: BuiltinBuilder
136 genFoldl = genVarArgs genFoldl'
137 genFoldl' :: (Either CoreSyn.CoreBndr AST.VHDLName) -> CoreSyn.CoreBndr -> [Var.Var] -> VHDLSession [AST.ConcSm]
138 genFoldl' (Left res) f [folded_f, start, vec] = do
139 -- evec is (TFVec n), so it still needs an element type
140 let (nvec, _) = splitAppTy (Var.varType vec)
141 -- Put the type of the start value in nvec, this will be the type of our
143 let tmp_ty = Type.mkAppTy nvec (Var.varType start)
144 tmp_vhdl_ty <- vhdl_ty tmp_ty
145 -- Setup the generate scheme
146 let gen_label = mkVHDLExtId ("foldlVector" ++ (varToString vec))
147 let block_label = mkVHDLExtId ("foldlVector" ++ (varToString start))
148 let gen_range = AST.ToRange (AST.PrimLit "0") len_min_expr
149 let gen_scheme = AST.ForGn n_id gen_range
150 -- Make the intermediate vector
151 let tmp_dec = AST.BDISD $ AST.SigDec tmp_id tmp_vhdl_ty Nothing
152 -- Create the generate statement
153 cells <- sequence [genFirstCell, genOtherCell]
154 let gen_sm = AST.GenerateSm gen_label gen_scheme [] (map AST.CSGSm cells)
155 -- Assign tmp[len-1] to res
156 let out_assign = mkUncondAssign (Left res) $ vhdlNameToVHDLExpr (mkIndexedName tmp_name (AST.PrimLit $ show (len-1)))
157 let block = AST.BlockSm block_label [] (AST.PMapAspect []) [tmp_dec] [AST.CSGSm gen_sm, out_assign]
158 return [AST.CSBSm block]
161 len = (tfvec_len . Var.varType) vec
162 -- An id for the counter
163 n_id = mkVHDLBasicId "n"
164 n_expr = idToVHDLExpr n_id
165 -- An expression for n-1
166 n_min_expr = n_expr AST.:-: (AST.PrimLit "1")
167 -- An expression for len-1
168 len_min_expr = (AST.PrimLit $ show (len-1))
169 -- An id for the tmp result vector
170 tmp_id = mkVHDLBasicId "tmp"
171 tmp_name = AST.NSimple tmp_id
172 -- Generate parts of the fold
173 genFirstCell, genOtherCell :: VHDLSession AST.GenerateSm
175 let cond_label = mkVHDLExtId "firstcell"
177 let cond_scheme = AST.IfGn $ n_expr AST.:=: (AST.PrimLit "0")
179 let resname = mkIndexedName tmp_name n_expr
181 let argexpr1 = varToVHDLExpr start
183 let argexpr2 = vhdlNameToVHDLExpr $ mkIndexedName (varToVHDLName vec) n_expr
184 app_concsms <- genApplication (Right resname) folded_f [Right argexpr1, Right argexpr2]
185 -- Return the conditional generate part
186 return $ AST.GenerateSm cond_label cond_scheme [] app_concsms
189 let cond_label = mkVHDLExtId "othercell"
191 let cond_scheme = AST.IfGn $ n_expr AST.:>: (AST.PrimLit "0")
193 let resname = mkIndexedName tmp_name n_expr
194 -- Input from tmp[n-1]
195 let argexpr1 = vhdlNameToVHDLExpr $ mkIndexedName tmp_name n_min_expr
197 let argexpr2 = vhdlNameToVHDLExpr $ mkIndexedName (varToVHDLName vec) n_expr
198 app_concsms <- genApplication (Right resname) folded_f [Right argexpr1, Right argexpr2]
199 -- Return the conditional generate part
200 return $ AST.GenerateSm cond_label cond_scheme [] app_concsms
202 -----------------------------------------------------------------------------
203 -- Function to generate VHDL for applications
204 -----------------------------------------------------------------------------
206 (Either CoreSyn.CoreBndr AST.VHDLName) -- ^ Where to store the result?
207 -> CoreSyn.CoreBndr -- ^ The function to apply
208 -> [Either CoreSyn.CoreExpr AST.Expr] -- ^ The arguments to apply
209 -> VHDLSession [AST.ConcSm] -- ^ The resulting concurrent statements
210 genApplication dst f args =
211 case Var.globalIdVarDetails f of
212 IdInfo.DataConWorkId dc -> case dst of
213 -- It's a datacon. Create a record from its arguments.
215 -- We have the bndr, so we can get at the type
216 labels <- getFieldLabels (Var.varType bndr)
217 return $ zipWith mkassign labels $ map (either exprToVHDLExpr id) args
219 mkassign :: AST.VHDLId -> AST.Expr -> AST.ConcSm
221 let sel_name = mkSelectedName ((either varToVHDLName id) dst) label in
222 mkUncondAssign (Right sel_name) arg
223 Right _ -> error $ "Generate.genApplication Can't generate dataconstructor application without an original binder"
224 IdInfo.VanillaGlobal -> do
225 -- It's a global value imported from elsewhere. These can be builtin
226 -- functions. Look up the function name in the name table and execute
227 -- the associated builder if there is any and the argument count matches
228 -- (this should always be the case if it typechecks, but just to be
230 case (Map.lookup (varToString f) globalNameTable) of
231 Just (arg_count, builder) ->
232 if length args == arg_count then
235 error $ "Generate.genApplication Incorrect number of arguments to builtin function: " ++ pprString f ++ " Args: " ++ show args
236 Nothing -> error $ "Using function from another module that is not a known builtin: " ++ pprString f
237 IdInfo.NotGlobalId -> do
238 signatures <- getA vsSignatures
239 -- This is a local id, so it should be a function whose definition we
240 -- have and which can be turned into a component instantiation.
242 signature = Maybe.fromMaybe
243 (error $ "Using function '" ++ (varToString f) ++ "' without signature? This should not happen!")
244 (Map.lookup f signatures)
245 entity_id = ent_id signature
246 -- TODO: Using show here isn't really pretty, but we'll need some
247 -- unique-ish value...
248 label = "comp_ins_" ++ (either show show) dst
249 portmaps = mkAssocElems (map (either exprToVHDLExpr id) args) ((either varToVHDLName id) dst) signature
251 return [mkComponentInst label entity_id portmaps]
252 details -> error $ "Calling unsupported function " ++ pprString f ++ " with GlobalIdDetails " ++ pprString details
254 -----------------------------------------------------------------------------
255 -- Functions to generate functions dealing with vectors.
256 -----------------------------------------------------------------------------
258 -- Returns the VHDLId of the vector function with the given name for the given
259 -- element type. Generates -- this function if needed.
260 vectorFunId :: Type.Type -> String -> VHDLSession AST.VHDLId
261 vectorFunId el_ty fname = do
262 elemTM <- vhdl_ty el_ty
263 -- TODO: This should not be duplicated from mk_vector_ty. Probably but it in
264 -- the VHDLState or something.
265 let vectorTM = mkVHDLExtId $ "vector_" ++ (AST.fromVHDLId elemTM)
266 typefuns <- getA vsTypeFuns
267 case Map.lookup (OrdType el_ty, fname) typefuns of
268 -- Function already generated, just return it
269 Just (id, _) -> return id
270 -- Function not generated yet, generate it
272 let functions = genUnconsVectorFuns elemTM vectorTM
273 case lookup fname functions of
275 modA vsTypeFuns $ Map.insert (OrdType el_ty, fname) (function_id, body)
277 Nothing -> error $ "I don't know how to generate vector function " ++ fname
279 function_id = mkVHDLExtId fname
281 genUnconsVectorFuns :: AST.TypeMark -- ^ type of the vector elements
282 -> AST.TypeMark -- ^ type of the vector
283 -> [(String, AST.SubProgBody)]
284 genUnconsVectorFuns elemTM vectorTM =
285 [ (exId, AST.SubProgBody exSpec [] [exExpr])
286 , (replaceId, AST.SubProgBody replaceSpec [AST.SPVD replaceVar] [replaceExpr,replaceRet])
287 , (headId, AST.SubProgBody headSpec [] [headExpr])
288 , (lastId, AST.SubProgBody lastSpec [] [lastExpr])
289 , (initId, AST.SubProgBody initSpec [AST.SPVD initVar] [initExpr, initRet])
290 , (tailId, AST.SubProgBody tailSpec [AST.SPVD tailVar] [tailExpr, tailRet])
291 , (takeId, AST.SubProgBody takeSpec [AST.SPVD takeVar] [takeExpr, takeRet])
292 , (dropId, AST.SubProgBody dropSpec [AST.SPVD dropVar] [dropExpr, dropRet])
293 , (plusgtId, AST.SubProgBody plusgtSpec [AST.SPVD plusgtVar] [plusgtExpr, plusgtRet])
294 , (emptyId, AST.SubProgBody emptySpec [AST.SPCD emptyVar] [emptyExpr])
295 , (singletonId, AST.SubProgBody singletonSpec [AST.SPVD singletonVar] [singletonRet])
296 , (copyId, AST.SubProgBody copySpec [AST.SPVD copyVar] [copyExpr])
299 ixPar = AST.unsafeVHDLBasicId "ix"
300 vecPar = AST.unsafeVHDLBasicId "vec"
301 nPar = AST.unsafeVHDLBasicId "n"
302 iId = AST.unsafeVHDLBasicId "i"
304 aPar = AST.unsafeVHDLBasicId "a"
305 resId = AST.unsafeVHDLBasicId "res"
306 exSpec = AST.Function (mkVHDLExtId exId) [AST.IfaceVarDec vecPar vectorTM,
307 AST.IfaceVarDec ixPar naturalTM] elemTM
308 exExpr = AST.ReturnSm (Just $ AST.PrimName $ AST.NIndexed
309 (AST.IndexedName (AST.NSimple vecPar) [AST.PrimName $
311 replaceSpec = AST.Function (mkVHDLExtId replaceId) [ AST.IfaceVarDec vecPar vectorTM
312 , AST.IfaceVarDec iPar naturalTM
313 , AST.IfaceVarDec aPar elemTM
315 -- variable res : fsvec_x (0 to vec'length-1);
318 (AST.SubtypeIn vectorTM
319 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
320 [AST.ToRange (AST.PrimLit "0")
321 (AST.PrimName (AST.NAttribute $
322 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing) AST.:-:
323 (AST.PrimLit "1")) ]))
325 -- res AST.:= vec(0 to i-1) & a & vec(i+1 to length'vec-1)
326 replaceExpr = AST.NSimple resId AST.:=
327 (vecSlice (AST.PrimLit "0") (AST.PrimName (AST.NSimple iPar) AST.:-: AST.PrimLit "1") AST.:&:
328 AST.PrimName (AST.NSimple aPar) AST.:&:
329 vecSlice (AST.PrimName (AST.NSimple iPar) AST.:+: AST.PrimLit "1")
330 ((AST.PrimName (AST.NAttribute $
331 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing))
332 AST.:-: AST.PrimLit "1"))
333 replaceRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
334 vecSlice init last = AST.PrimName (AST.NSlice
337 (AST.ToRange init last)))
338 headSpec = AST.Function (mkVHDLExtId headId) [AST.IfaceVarDec vecPar vectorTM] elemTM
340 headExpr = AST.ReturnSm (Just $ (AST.PrimName $ AST.NIndexed (AST.IndexedName
341 (AST.NSimple vecPar) [AST.PrimLit "0"])))
342 lastSpec = AST.Function (mkVHDLExtId lastId) [AST.IfaceVarDec vecPar vectorTM] elemTM
343 -- return vec(vec'length-1);
344 lastExpr = AST.ReturnSm (Just $ (AST.PrimName $ AST.NIndexed (AST.IndexedName
346 [AST.PrimName (AST.NAttribute $
347 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing)
348 AST.:-: AST.PrimLit "1"])))
349 initSpec = AST.Function (mkVHDLExtId initId) [AST.IfaceVarDec vecPar vectorTM] vectorTM
350 -- variable res : fsvec_x (0 to vec'length-2);
353 (AST.SubtypeIn vectorTM
354 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
355 [AST.ToRange (AST.PrimLit "0")
356 (AST.PrimName (AST.NAttribute $
357 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing) AST.:-:
358 (AST.PrimLit "2")) ]))
360 -- resAST.:= vec(0 to vec'length-2)
361 initExpr = AST.NSimple resId AST.:= (vecSlice
363 (AST.PrimName (AST.NAttribute $
364 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing)
365 AST.:-: AST.PrimLit "2"))
366 initRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
367 tailSpec = AST.Function (mkVHDLExtId tailId) [AST.IfaceVarDec vecPar vectorTM] vectorTM
368 -- variable res : fsvec_x (0 to vec'length-2);
371 (AST.SubtypeIn vectorTM
372 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
373 [AST.ToRange (AST.PrimLit "0")
374 (AST.PrimName (AST.NAttribute $
375 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing) AST.:-:
376 (AST.PrimLit "2")) ]))
378 -- res AST.:= vec(1 to vec'length-1)
379 tailExpr = AST.NSimple resId AST.:= (vecSlice
381 (AST.PrimName (AST.NAttribute $
382 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing)
383 AST.:-: AST.PrimLit "1"))
384 tailRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
385 takeSpec = AST.Function (mkVHDLExtId takeId) [AST.IfaceVarDec nPar naturalTM,
386 AST.IfaceVarDec vecPar vectorTM ] vectorTM
387 -- variable res : fsvec_x (0 to n-1);
390 (AST.SubtypeIn vectorTM
391 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
392 [AST.ToRange (AST.PrimLit "0")
393 ((AST.PrimName (AST.NSimple nPar)) AST.:-:
394 (AST.PrimLit "1")) ]))
396 -- res AST.:= vec(0 to n-1)
397 takeExpr = AST.NSimple resId AST.:=
398 (vecSlice (AST.PrimLit "1")
399 (AST.PrimName (AST.NSimple $ nPar) AST.:-: AST.PrimLit "1"))
400 takeRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
401 dropSpec = AST.Function (mkVHDLExtId dropId) [AST.IfaceVarDec nPar naturalTM,
402 AST.IfaceVarDec vecPar vectorTM ] vectorTM
403 -- variable res : fsvec_x (0 to vec'length-n-1);
406 (AST.SubtypeIn vectorTM
407 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
408 [AST.ToRange (AST.PrimLit "0")
409 (AST.PrimName (AST.NAttribute $
410 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing) AST.:-:
411 (AST.PrimName $ AST.NSimple nPar)AST.:-: (AST.PrimLit "1")) ]))
413 -- res AST.:= vec(n to vec'length-1)
414 dropExpr = AST.NSimple resId AST.:= (vecSlice
415 (AST.PrimName $ AST.NSimple nPar)
416 (AST.PrimName (AST.NAttribute $
417 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing)
418 AST.:-: AST.PrimLit "1"))
419 dropRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
420 plusgtSpec = AST.Function (mkVHDLExtId plusgtId) [AST.IfaceVarDec aPar elemTM,
421 AST.IfaceVarDec vecPar vectorTM] vectorTM
422 -- variable res : fsvec_x (0 to vec'length);
425 (AST.SubtypeIn vectorTM
426 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
427 [AST.ToRange (AST.PrimLit "0")
428 (AST.PrimName (AST.NAttribute $
429 AST.AttribName (AST.NSimple vecPar) (mkVHDLBasicId lengthId) Nothing))]))
431 plusgtExpr = AST.NSimple resId AST.:=
432 ((AST.PrimName $ AST.NSimple aPar) AST.:&:
433 (AST.PrimName $ AST.NSimple vecPar))
434 plusgtRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
435 emptySpec = AST.Function (mkVHDLExtId emptyId) [] vectorTM
438 (AST.SubtypeIn vectorTM Nothing)
439 (Just $ AST.PrimLit "\"\"")
440 emptyExpr = AST.ReturnSm (Just $ AST.PrimName (AST.NSimple resId))
441 singletonSpec = AST.Function (mkVHDLExtId singletonId) [AST.IfaceVarDec aPar elemTM ]
443 -- variable res : fsvec_x (0 to 0) := (others => a);
446 (AST.SubtypeIn vectorTM
447 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
448 [AST.ToRange (AST.PrimLit "0") (AST.PrimLit "0")]))
449 (Just $ AST.Aggregate [AST.ElemAssoc (Just AST.Others)
450 (AST.PrimName $ AST.NSimple aPar)])
451 singletonRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
452 copySpec = AST.Function (mkVHDLExtId copyId) [AST.IfaceVarDec nPar naturalTM,
453 AST.IfaceVarDec aPar elemTM ] vectorTM
454 -- variable res : fsvec_x (0 to n-1) := (others => a);
457 (AST.SubtypeIn vectorTM
458 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
459 [AST.ToRange (AST.PrimLit "0")
460 ((AST.PrimName (AST.NSimple nPar)) AST.:-:
461 (AST.PrimLit "1")) ]))
462 (Just $ AST.Aggregate [AST.ElemAssoc (Just AST.Others)
463 (AST.PrimName $ AST.NSimple aPar)])
465 copyExpr = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
467 -----------------------------------------------------------------------------
468 -- A table of builtin functions
469 -----------------------------------------------------------------------------
471 -- | The builtin functions we support. Maps a name to an argument count and a
473 globalNameTable :: NameTable
474 globalNameTable = Map.fromList
475 [ (exId , (2, genFCall ) )
476 , (replaceId , (3, genFCall ) )
477 , (headId , (1, genFCall ) )
478 , (lastId , (1, genFCall ) )
479 , (tailId , (1, genFCall ) )
480 , (initId , (1, genFCall ) )
481 , (takeId , (2, genFCall ) )
482 , (dropId , (2, genFCall ) )
483 , (plusgtId , (2, genFCall ) )
484 , (mapId , (2, genMap ) )
485 , (zipWithId , (3, genZipWith ) )
486 , (foldlId , (3, genFoldl ) )
487 , (emptyId , (0, genFCall ) )
488 , (singletonId , (1, genFCall ) )
489 , (copyId , (2, genFCall ) )
490 , (hwxorId , (2, genOperator2 AST.Xor ) )
491 , (hwandId , (2, genOperator2 AST.And ) )
492 , (hworId , (2, genOperator2 AST.Or ) )
493 , (hwnotId , (1, genOperator1 AST.Not ) )