- keep_tc tc = let dcs = tyConDataCons tc
- in
- defTyCon tc tc >> zipWithM_ defDataCon dcs dcs
-
-
-vectTyConDecls :: [TyCon] -> VM [TyCon]
-vectTyConDecls tcs = fixV $ \tcs' ->
- do
- mapM_ (uncurry defTyCon) (lazy_zip tcs tcs')
- mapM vectTyConDecl tcs
- where
- lazy_zip [] _ = []
- lazy_zip (x:xs) ~(y:ys) = (x,y) : lazy_zip xs ys
-
-vectTyConDecl :: TyCon -> VM TyCon
-vectTyConDecl tc
- = do
- name' <- cloneName mkVectTyConOcc name
- rhs' <- vectAlgTyConRhs (algTyConRhs tc)
-
- liftDs $ buildAlgTyCon name'
- tyvars
- [] -- no stupid theta
- rhs'
- rec_flag -- FIXME: is this ok?
- False -- FIXME: no generics
- False -- not GADT syntax
- Nothing -- not a family instance
- where
- name = tyConName tc
- tyvars = tyConTyVars tc
- rec_flag = boolToRecFlag (isRecursiveTyCon tc)
-
-vectAlgTyConRhs :: AlgTyConRhs -> VM AlgTyConRhs
-vectAlgTyConRhs (DataTyCon { data_cons = data_cons
- , is_enum = is_enum
- })
- = do
- data_cons' <- mapM vectDataCon data_cons
- zipWithM_ defDataCon data_cons data_cons'
- return $ DataTyCon { data_cons = data_cons'
- , is_enum = is_enum
- }
-
-vectDataCon :: DataCon -> VM DataCon
-vectDataCon dc
- | not . null $ dataConExTyVars dc = pprPanic "vectDataCon: existentials" (ppr dc)
- | not . null $ dataConEqSpec dc = pprPanic "vectDataCon: eq spec" (ppr dc)
- | otherwise
- = do
- name' <- cloneName mkVectDataConOcc name
- tycon' <- vectTyCon tycon
- arg_tys <- mapM vectType rep_arg_tys
-
- liftDs $ buildDataCon name'
- False -- not infix
- (map (const NotMarkedStrict) arg_tys)
- [] -- no labelled fields
- univ_tvs
- [] -- no existential tvs for now
- [] -- no eq spec for now
- [] -- no context
- arg_tys
- tycon'
- where
- name = dataConName dc
- univ_tvs = dataConUnivTyVars dc
- rep_arg_tys = dataConRepArgTys dc
- tycon = dataConTyCon dc
-
-mk_fam_inst :: TyCon -> TyCon -> (TyCon, [Type])
-mk_fam_inst fam_tc arg_tc
- = (fam_tc, [mkTyConApp arg_tc . mkTyVarTys $ tyConTyVars arg_tc])
-
-buildPReprTyCon :: TyCon -> TyCon -> VM TyCon
-buildPReprTyCon orig_tc vect_tc
- = do
- name <- cloneName mkPReprTyConOcc (tyConName orig_tc)
- rhs_ty <- buildPReprType vect_tc
- prepr_tc <- builtin preprTyCon
- liftDs $ buildSynTyCon name
- tyvars
- (SynonymTyCon rhs_ty)
- (Just $ mk_fam_inst prepr_tc vect_tc)
- where
- tyvars = tyConTyVars vect_tc
-
-
-data Repr = ProdRepr {
- prod_components :: [Type]
- , prod_tycon :: TyCon
- , prod_data_con :: DataCon
- , prod_arr_tycon :: TyCon
- , prod_arr_data_con :: DataCon
- }
-
- | SumRepr {
- sum_components :: [Repr]
- , sum_tycon :: TyCon
- , sum_arr_tycon :: TyCon
- , sum_arr_data_con :: DataCon
- }
-
-mkProduct :: [Type] -> VM Repr
-mkProduct tys
- = do
- tycon <- builtin (prodTyCon arity)
- let [data_con] = tyConDataCons tycon
-
- (arr_tycon, _) <- parrayReprTyCon $ mkTyConApp tycon tys
- let [arr_data_con] = tyConDataCons arr_tycon
-
- return $ ProdRepr {
- prod_components = tys
- , prod_tycon = tycon
- , prod_data_con = data_con
- , prod_arr_tycon = arr_tycon
- , prod_arr_data_con = arr_data_con
- }
- where
- arity = length tys
-
-mkSum :: [Repr] -> VM Repr
-mkSum [repr] = return repr
-mkSum reprs
- = do
- tycon <- builtin (sumTyCon arity)
- (arr_tycon, _) <- parrayReprTyCon
- . mkTyConApp tycon
- $ map reprType reprs
-
- let [arr_data_con] = tyConDataCons arr_tycon
-
- return $ SumRepr {
- sum_components = reprs
- , sum_tycon = tycon
- , sum_arr_tycon = arr_tycon
- , sum_arr_data_con = arr_data_con
- }
- where
- arity = length reprs
-
-reprProducts :: Repr -> [Repr]
-reprProducts (SumRepr { sum_components = rs }) = rs
-reprProducts repr = [repr]
-
-reprType :: Repr -> Type
-reprType (ProdRepr { prod_tycon = tycon, prod_components = tys })
- = mkTyConApp tycon tys
-reprType (SumRepr { sum_tycon = tycon, sum_components = reprs })
- = mkTyConApp tycon (map reprType reprs)
-
-arrReprType :: Repr -> VM Type
-arrReprType = mkPArrayType . reprType
-
-reprTys :: Repr -> [[Type]]
-reprTys (SumRepr { sum_components = prods }) = map prodTys prods
-reprTys prod = [prodTys prod]
-
-prodTys (ProdRepr { prod_components = tys }) = tys
-
-reprVars :: Repr -> VM [[Var]]
-reprVars = mapM (mapM (newLocalVar FSLIT("r"))) . reprTys
-
-arrShapeTys :: Repr -> VM [Type]
-arrShapeTys (SumRepr {})
- = do
- int_arr <- builtin parrayIntPrimTyCon
- return [intPrimTy, mkTyConApp int_arr [], mkTyConApp int_arr []]
-arrShapeTys repr = return [intPrimTy]
-
-arrShapeVars :: Repr -> VM [Var]
-arrShapeVars repr = mapM (newLocalVar FSLIT("sh")) =<< arrShapeTys repr
-
-replicateShape :: Repr -> CoreExpr -> CoreExpr -> VM [CoreExpr]
-replicateShape (ProdRepr {}) len _ = return [len]
-replicateShape (SumRepr {}) len tag
- = do
- rep <- builtin replicatePAIntPrimVar
- up <- builtin upToPAIntPrimVar
- return [len, Var rep `mkApps` [len, tag], Var up `App` len]
-
-arrReprElemTys :: Repr -> [[Type]]
-arrReprElemTys (SumRepr { sum_components = prods })
- = map arrProdElemTys prods
-arrReprElemTys prod@(ProdRepr {})
- = [arrProdElemTys prod]
-
-arrProdElemTys (ProdRepr { prod_components = [] })
- = [unitTy]
-arrProdElemTys (ProdRepr { prod_components = tys })
- = tys
-
-arrReprTys :: Repr -> VM [[Type]]
-arrReprTys = mapM (mapM mkPArrayType) . arrReprElemTys
-
-arrReprVars :: Repr -> VM [[Var]]
-arrReprVars repr
- = mapM (mapM (newLocalVar FSLIT("rs"))) =<< arrReprTys repr
-
-mkRepr :: TyCon -> VM Repr
-mkRepr vect_tc
- = mkSum
- =<< mapM mkProduct (map dataConRepArgTys $ tyConDataCons vect_tc)
-
-buildPReprType :: TyCon -> VM Type
-buildPReprType = liftM reprType . mkRepr
-
-buildToPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildToPRepr repr vect_tc prepr_tc _
- = do
- arg <- newLocalVar FSLIT("x") arg_ty
- result <- to_repr repr (Var arg)
-
- return . Lam arg
- . wrapFamInstBody prepr_tc var_tys
- $ result
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- arg_ty = mkTyConApp vect_tc var_tys
- res_ty = reprType repr
-
- cons = tyConDataCons vect_tc
- [con] = cons
-
- to_repr (SumRepr { sum_components = prods
- , sum_tycon = tycon })
- expr
- = do
- (vars, bodies) <- mapAndUnzipM prod_alt prods
- return . Case expr (mkWildId (exprType expr)) res_ty
- $ zipWith4 mk_alt cons vars (tyConDataCons tycon) bodies
- where
- mk_alt con vars sum_con body
- = (DataAlt con, vars, mkConApp sum_con (ty_args ++ [body]))
-
- ty_args = map (Type . reprType) prods
-
- to_repr prod expr
- = do
- (vars, body) <- prod_alt prod
- return $ Case expr (mkWildId (exprType expr)) res_ty
- [(DataAlt con, vars, body)]
-
- prod_alt (ProdRepr { prod_components = tys
- , prod_data_con = data_con })
- = do
- vars <- mapM (newLocalVar FSLIT("r")) tys
- return (vars, mkConApp data_con (map Type tys ++ map Var vars))
-
-buildFromPRepr :: Repr -> TyCon -> TyCon -> TyCon -> VM CoreExpr
-buildFromPRepr repr vect_tc prepr_tc _
- = do
- arg_ty <- mkPReprType res_ty
- arg <- newLocalVar FSLIT("x") arg_ty
-
- liftM (Lam arg)
- . from_repr repr
- $ unwrapFamInstScrut prepr_tc var_tys (Var arg)
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- res_ty = mkTyConApp vect_tc var_tys
-
- cons = map (`mkConApp` map Type var_tys) (tyConDataCons vect_tc)
- [con] = cons
-
- from_repr repr@(SumRepr { sum_components = prods
- , sum_tycon = tycon })
- expr
- = do
- vars <- mapM (newLocalVar FSLIT("x")) (map reprType prods)
- bodies <- sequence . zipWith3 from_prod prods cons
- $ map Var vars
- return . Case expr (mkWildId (reprType repr)) res_ty
- $ zipWith3 sum_alt (tyConDataCons tycon) vars bodies
- where
- sum_alt data_con var body = (DataAlt data_con, [var], body)
-
- from_repr repr expr = from_prod repr con expr