import Id ( mkWildId )
import Name ( Name, getOccName )
import NameEnv
-import TysWiredIn ( unitTy, intTy, intDataCon, unitDataConId )
+import TysWiredIn ( unitTy, unitTyCon, intTy, intDataCon, unitDataConId )
import TysPrim ( intPrimTy )
import Unique
where
tyvars = tyConTyVars vect_tc
+data TyConRepr = ProdRepr {
+ repr_prod_arg_tys :: [Type]
+ , repr_prod_tycon :: TyCon
+ , repr_prod_data_con :: DataCon
+ , repr_prod_arr_tycon :: TyCon
+ , repr_prod_arr_data_con :: DataCon
+ , repr_type :: Type
+ }
+ | SumRepr {
+ repr_tys :: [[Type]]
+ , repr_prod_tycons :: [Maybe TyCon]
+ , repr_prod_data_cons :: [Maybe DataCon]
+ , repr_prod_tys :: [Type]
+ , repr_sum_tycon :: TyCon
+ , repr_type :: Type
+ }
+
+arrShapeTys :: TyConRepr -> VM [Type]
+arrShapeTys (ProdRepr {}) = return [intPrimTy]
+arrShapeTys (SumRepr {})
+ = do
+ uarr <- builtin uarrTyCon
+ return [intPrimTy, mkTyConApp uarr [intTy]]
+
+arrReprTys :: TyConRepr -> VM [Type]
+arrReprTys (ProdRepr { repr_prod_arg_tys = tys })
+ = mapM mkPArrayType tys
+arrReprTys (SumRepr { repr_tys = tys })
+ = concat `liftM` mapM (mapM mkPArrayType) (map mk_prod tys)
+ where
+ mk_prod [] = [unitTy]
+ mk_prod tys = tys
+
+
+mkTyConRepr :: TyCon -> VM TyConRepr
+mkTyConRepr vect_tc
+ | is_product
+ = let
+ [prod_arg_tys] = repr_tys
+ arity = length prod_arg_tys
+ in
+ do
+ prod_tycon <- builtin (prodTyCon arity)
+ let [prod_data_con] = tyConDataCons prod_tycon
+
+ (arr_tycon, _) <- parrayReprTyCon
+ . mkTyConApp prod_tycon
+ $ replicate arity unitTy
+
+ let [arr_data_con] = tyConDataCons arr_tycon
+
+ return $ ProdRepr {
+ repr_prod_arg_tys = prod_arg_tys
+ , repr_prod_tycon = prod_tycon
+ , repr_prod_data_con = prod_data_con
+ , repr_prod_arr_tycon = arr_tycon
+ , repr_prod_arr_data_con = arr_data_con
+ , repr_type = mkTyConApp prod_tycon prod_arg_tys
+ }
+
+ | otherwise
+ = do
+ uarr <- builtin uarrTyCon
+ prod_tycons <- mapM (mk_tycon prodTyCon) repr_tys
+ let prod_tys = zipWith mk_tc_app_maybe prod_tycons repr_tys
+ sum_tycon <- builtin (sumTyCon $ length repr_tys)
+ arr_repr_tys <- mapM (mapM mkPArrayType . arr_repr_elem_tys) repr_tys
+
+ return $ SumRepr {
+ repr_tys = repr_tys
+ , repr_prod_tycons = prod_tycons
+ , repr_prod_data_cons = map (fmap mk_single_datacon) prod_tycons
+ , repr_prod_tys = prod_tys
+ , repr_sum_tycon = sum_tycon
+ , repr_type = mkTyConApp sum_tycon prod_tys
+ }
+ where
+ tyvars = tyConTyVars vect_tc
+ data_cons = tyConDataCons vect_tc
+ repr_tys = map dataConRepArgTys data_cons
+
+ is_product | [_] <- data_cons = True
+ | otherwise = False
+
+ mk_shape uarr = intPrimTy : mk_sel uarr
+
+ mk_sel uarr | is_product = []
+ | otherwise = [uarr_int, uarr_int]
+ where
+ uarr_int = mkTyConApp uarr [intTy]
+
+ mk_tycon get_tc tys
+ | n > 1 = builtin (Just . get_tc n)
+ | otherwise = return Nothing
+ where n = length tys
+
+ mk_single_datacon tc | [dc] <- tyConDataCons tc = dc
+
+ mk_tc_app_maybe Nothing [] = unitTy
+ mk_tc_app_maybe Nothing [ty] = ty
+ mk_tc_app_maybe (Just tc) tys = mkTyConApp tc tys
+
+ arr_repr_elem_tys [] = [unitTy]
+ arr_repr_elem_tys tys = tys
+
buildPReprType :: TyCon -> VM Type
buildPReprType = liftM repr_type . mkTyConRepr
buildToPRepr :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildToPRepr (TyConRepr {
- repr_tys = repr_tys
- , repr_prod_tycons = prod_tycons
- , repr_prod_tys = prod_tys
- , repr_sum_tycon = repr_sum_tycon
- , repr_type = repr_type
+buildToPRepr (ProdRepr {
+ repr_prod_arg_tys = prod_arg_tys
+ , repr_prod_data_con = prod_data_con
+ , repr_type = repr_type
+ })
+ vect_tc prepr_tc _
+ = do
+ arg <- newLocalVar FSLIT("x") arg_ty
+ vars <- mapM (newLocalVar FSLIT("x")) prod_arg_tys
+
+ return . Lam arg
+ . wrapFamInstBody prepr_tc var_tys
+ $ Case (Var arg) (mkWildId arg_ty) repr_type
+ [(DataAlt data_con, vars,
+ mkConApp prod_data_con (map Type prod_arg_tys ++ map Var vars))]
+ where
+ var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ arg_ty = mkTyConApp vect_tc var_tys
+ [data_con] = tyConDataCons vect_tc
+
+buildToPRepr (SumRepr {
+ repr_tys = repr_tys
+ , repr_prod_data_cons = prod_data_cons
+ , repr_prod_tys = prod_tys
+ , repr_sum_tycon = sum_tycon
+ , repr_type = repr_type
})
vect_tc prepr_tc _
= do
return . Lam arg
. wrapFamInstBody prepr_tc var_tys
. Case (Var arg) (mkWildId arg_ty) repr_type
- . mk_alts data_cons vars
- . zipWith3 mk_prod prod_tycons repr_tys $ map (map Var) vars
+ . zipWith4 mk_alt data_cons vars sum_data_cons
+ . zipWith3 mk_prod prod_data_cons repr_tys $ map (map Var) vars
where
var_tys = mkTyVarTys $ tyConTyVars vect_tc
arg_ty = mkTyConApp vect_tc var_tys
data_cons = tyConDataCons vect_tc
- Just sum_tycon = repr_sum_tycon
- sum_data_cons = tyConDataCons sum_tycon
-
- mk_alts _ _ [] = [(DEFAULT, [], Var unitDataConId)]
- mk_alts [dc] [vars] [expr] = [(DataAlt dc, vars, expr)]
- mk_alts dcs vars exprs = zipWith4 mk_alt dcs vars sum_data_cons exprs
+ sum_data_cons = tyConDataCons sum_tycon
mk_alt dc vars sum_dc expr = (DataAlt dc, vars,
mkConApp sum_dc (map Type prod_tys ++ [expr]))
mk_prod _ _ [] = Var unitDataConId
mk_prod _ _ [expr] = expr
- mk_prod (Just tc) tys exprs = mkConApp dc (map Type tys ++ exprs)
- where
- [dc] = tyConDataCons tc
+ mk_prod (Just dc) tys exprs = mkConApp dc (map Type tys ++ exprs)
buildFromPRepr :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildFromPRepr (TyConRepr {
- repr_tys = repr_tys
- , repr_prod_tycons = prod_tycons
- , repr_prod_tys = prod_tys
- , repr_sum_tycon = repr_sum_tycon
- , repr_type = repr_type
+buildFromPRepr (ProdRepr {
+ repr_prod_arg_tys = prod_arg_tys
+ , repr_prod_data_con = prod_data_con
+ , repr_type = repr_type
+ })
+ vect_tc prepr_tc _
+ = do
+ arg_ty <- mkPReprType res_ty
+ arg <- newLocalVar FSLIT("x") arg_ty
+ vars <- mapM (newLocalVar FSLIT("x")) prod_arg_tys
+
+ return . Lam arg
+ $ Case (unwrapFamInstScrut prepr_tc var_tys (Var arg))
+ (mkWildId repr_type)
+ res_ty
+ [(DataAlt prod_data_con, vars,
+ mkConApp data_con (map Type var_tys ++ map Var vars))]
+ where
+ var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ ty_args = map Type var_tys
+ res_ty = mkTyConApp vect_tc var_tys
+ [data_con] = tyConDataCons vect_tc
+
+buildFromPRepr (SumRepr {
+ repr_tys = repr_tys
+ , repr_prod_data_cons = prod_data_cons
+ , repr_prod_tys = prod_tys
+ , repr_sum_tycon = sum_tycon
+ , repr_type = repr_type
})
vect_tc prepr_tc _
= do
arg <- newLocalVar FSLIT("x") arg_ty
liftM (Lam arg
- . un_sum (unwrapFamInstScrut prepr_tc var_tys (Var arg)))
- (sequence $ zipWith4 un_prod data_cons prod_tycons prod_tys repr_tys)
+ . Case (unwrapFamInstScrut prepr_tc var_tys (Var arg))
+ (mkWildId repr_type)
+ res_ty
+ . zipWith mk_alt sum_data_cons)
+ (sequence
+ $ zipWith4 un_prod data_cons prod_data_cons prod_tys repr_tys)
where
var_tys = mkTyVarTys $ tyConTyVars vect_tc
ty_args = map Type var_tys
res_ty = mkTyConApp vect_tc var_tys
data_cons = tyConDataCons vect_tc
- Just sum_tc = repr_sum_tycon
- sum_data_cons = tyConDataCons sum_tc
+ sum_data_cons = tyConDataCons sum_tycon
un_prod dc _ _ []
= do
var <- newLocalVar FSLIT("x") ty
return (var, mkConApp dc (ty_args ++ [Var var]))
- un_prod dc (Just prod_tc) prod_ty tys
+ un_prod dc (Just prod_dc) prod_ty tys
= do
vars <- mapM (newLocalVar FSLIT("x")) tys
pv <- newLocalVar FSLIT("p") prod_ty
[(DataAlt prod_dc, vars, res)]
return (pv, expr)
- where
- [prod_dc] = tyConDataCons prod_tc
-
-
- un_sum scrut [(var, expr)] = Let (NonRec var scrut) expr
- un_sum scrut alts
- = Case scrut (mkWildId repr_type) res_ty
- $ zipWith mk_alt sum_data_cons alts
mk_alt sum_dc (var, expr) = (DataAlt sum_dc, [var], expr)
buildToArrPRepr :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
+buildToArrPRepr repr@(ProdRepr {
+ repr_prod_arg_tys = prod_arg_tys
+ , repr_prod_arr_tycon = prod_arr_tycon
+ , repr_prod_arr_data_con = prod_arr_data_con
+ , repr_type = repr_type
+ })
+ vect_tc prepr_tc arr_tc
+ = do
+ arg_ty <- mkPArrayType el_ty
+ shape_tys <- arrShapeTys repr
+ arr_tys <- arrReprTys repr
+ res_ty <- mkPArrayType repr_type
+ rep_el_ty <- mkPReprType el_ty
+
+ arg <- newLocalVar FSLIT("xs") arg_ty
+ shape_vars <- mapM (newLocalVar FSLIT("sh")) shape_tys
+ rep_vars <- mapM (newLocalVar FSLIT("ys")) arr_tys
+
+ let vars = shape_vars ++ rep_vars
+
+ parray_co <- mkBuiltinCo parrayTyCon
+
+ let res = wrapFamInstBody prod_arr_tycon prod_arg_tys
+ . mkConApp prod_arr_data_con
+ $ map Type prod_arg_tys ++ map Var vars
+
+ Just repr_co = tyConFamilyCoercion_maybe prepr_tc
+ co = mkAppCoercion parray_co
+ . mkSymCoercion
+ $ mkTyConApp repr_co var_tys
+
+ return . Lam arg
+ . mkCoerce co
+ $ Case (unwrapFamInstScrut arr_tc var_tys (Var arg))
+ (mkWildId (mkTyConApp arr_tc var_tys))
+ res_ty
+ [(DataAlt arr_dc, vars, res)]
+ where
+ var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ el_ty = mkTyConApp vect_tc var_tys
+
+ [arr_dc] = tyConDataCons arr_tc
+
+
+buildToArrPRepr _ _ _ _ = return (Var unitDataConId)
+{-
buildToArrPRepr _ vect_tc prepr_tc arr_tc
= do
arg_ty <- mkPArrayType el_ty
has_selector | [_] <- data_cons = False
| otherwise = True
+-}
buildFromArrPRepr :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildFromArrPRepr _ vect_tc prepr_tc arr_tc
- = mkFromArrPRepr undefined undefined undefined undefined undefined undefined
+buildFromArrPRepr repr@(ProdRepr {
+ repr_prod_arg_tys = prod_arg_tys
+ , repr_prod_arr_tycon = prod_arr_tycon
+ , repr_prod_arr_data_con = prod_arr_data_con
+ , repr_type = repr_type
+ })
+ vect_tc prepr_tc arr_tc
+ = do
+ rep_el_ty <- mkPReprType el_ty
+ arg_ty <- mkPArrayType rep_el_ty
+ shape_tys <- arrShapeTys repr
+ arr_tys <- arrReprTys repr
+ res_ty <- mkPArrayType el_ty
+
+ arg <- newLocalVar FSLIT("xs") arg_ty
+ shape_vars <- mapM (newLocalVar FSLIT("sh")) shape_tys
+ rep_vars <- mapM (newLocalVar FSLIT("ys")) arr_tys
+
+ let vars = shape_vars ++ rep_vars
+
+ parray_co <- mkBuiltinCo parrayTyCon
+
+ let res = wrapFamInstBody arr_tc var_tys
+ . mkConApp arr_dc
+ $ map Type var_tys ++ map Var vars
+
+ Just repr_co = tyConFamilyCoercion_maybe prepr_tc
+ co = mkAppCoercion parray_co
+ $ mkTyConApp repr_co var_tys
+
+ scrut = unwrapFamInstScrut prod_arr_tycon prod_arg_tys
+ $ mkCoerce co (Var arg)
+
+ return . Lam arg
+ $ Case (scrut)
+ (mkWildId (mkTyConApp prod_arr_tycon prod_arg_tys))
+ res_ty
+ [(DataAlt prod_arr_data_con, vars, res)]
+ where
+ var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ el_ty = mkTyConApp vect_tc var_tys
+
+ [arr_dc] = tyConDataCons arr_tc
+buildFromArrPRepr _ _ _ _ = return (Var unitDataConId)
+
+buildPRDictRepr :: TyConRepr -> VM CoreExpr
+buildPRDictRepr (ProdRepr {
+ repr_prod_arg_tys = prod_arg_tys
+ , repr_prod_tycon = prod_tycon
+ })
+ = do
+ prs <- mapM mkPR prod_arg_tys
+ dfun <- prDFunOfTyCon prod_tycon
+ return $ dfun `mkTyApps` prod_arg_tys `mkApps` prs
+
+buildPRDictRepr (SumRepr {
+ repr_tys = repr_tys
+ , repr_prod_tycons = prod_tycons
+ , repr_prod_tys = prod_tys
+ , repr_sum_tycon = sum_tycon
+ })
+ = do
+ prs <- mapM (mapM mkPR) repr_tys
+ prod_prs <- sequence $ zipWith3 mk_prod_pr prod_tycons repr_tys prs
+ sum_dfun <- prDFunOfTyCon sum_tycon
+ return $ sum_dfun `mkTyApps` prod_tys `mkApps` prod_prs
+ where
+ mk_prod_pr _ _ [] = prDFunOfTyCon unitTyCon
+ mk_prod_pr _ _ [pr] = return pr
+ mk_prod_pr (Just tc) tys prs
+ = do
+ dfun <- prDFunOfTyCon tc
+ return $ dfun `mkTyApps` tys `mkApps` prs
buildPRDict :: TyConRepr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildPRDict _ vect_tc prepr_tc _
- = prCoerce prepr_tc var_tys
- =<< prDictOfType (mkTyConApp prepr_tc var_tys)
+buildPRDict repr vect_tc prepr_tc _
+ = do
+ dict <- buildPRDictRepr repr
+
+ pr_co <- mkBuiltinCo prTyCon
+ let co = mkAppCoercion pr_co
+ . mkSymCoercion
+ $ mkTyConApp arg_co var_tys
+
+ return $ mkCoerce co dict
where
var_tys = mkTyVarTys $ tyConTyVars vect_tc
+ Just arg_co = tyConFamilyCoercion_maybe prepr_tc
+
buildPArrayTyCon :: TyCon -> TyCon -> VM TyCon
buildPArrayTyCon orig_tc vect_tc = fixV $ \repr_tc ->
do
buildPArrayDataCon orig_name vect_tc repr_tc
= do
dc_name <- cloneName mkPArrayDataConOcc orig_name
- shape <- tyConShape vect_tc
- repr_tys <- mapM mkPArrayType types
+ repr <- mkTyConRepr vect_tc
+
+ shape_tys <- arrShapeTys repr
+ repr_tys <- arrReprTys repr
+
+ let tys = shape_tys ++ repr_tys
liftDs $ buildDataCon dc_name
False -- not infix
- (shapeStrictness shape ++ map (const NotMarkedStrict) repr_tys)
+ (map (const NotMarkedStrict) tys)
[] -- no field labels
(tyConTyVars vect_tc)
[] -- no existentials
[] -- no eq spec
[] -- no context
- (shapeReprTys shape ++ repr_tys)
+ tys
repr_tc
- where
- types = [ty | dc <- tyConDataCons vect_tc
- , ty <- dataConRepArgTys dc]
mkPADFun :: TyCon -> VM Var
mkPADFun vect_tc
projects / ghc-hetmet.git / blobdiff