- to_prod (UnaryProd comp)
- = do
- var <- newLocalVar (fsLit "x") (compOrigType comp)
- body <- to_comp (Var var) comp
- return ([var], body)
-
- to_prod(Prod { repr_tup_tc = tup_tc
- , repr_comp_tys = tys
- , repr_comps = comps })
- = do
- vars <- newLocalVars (fsLit "x") (map compOrigType comps)
- exprs <- zipWithM to_comp (map Var vars) comps
- return (vars, mkConApp tup_con (map Type tys ++ exprs))
- where
- [tup_con] = tyConDataCons tup_tc
-
- to_comp expr (Keep _ _) = return expr
- to_comp expr (Wrap ty) = do
- wrap_tc <- builtin wrapTyCon
- return $ wrapNewTypeBody wrap_tc [ty] expr
-
-
-buildFromPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
-buildFromPRepr vect_tc repr_tc _ repr
- = do
- arg_ty <- mkPReprType res_ty
- arg <- newLocalVar (fsLit "x") arg_ty
-
- result <- from_sum (unwrapFamInstScrut repr_tc ty_args (Var arg))
- repr
- return $ Lam arg result
- where
- ty_args = mkTyVarTys (tyConTyVars vect_tc)
- res_ty = mkTyConApp vect_tc ty_args
-
- from_sum _ EmptySum
- = do
- dummy <- builtin fromVoidVar
- return $ Var dummy `App` Type res_ty
-
- from_sum expr (UnarySum r) = from_con expr r
- from_sum expr (Sum { repr_sum_tc = sum_tc
- , repr_con_tys = tys
- , repr_cons = cons })
- = do
- vars <- newLocalVars (fsLit "x") tys
- es <- zipWithM from_con (map Var vars) cons
- return $ mkWildCase expr (exprType expr) res_ty
- [(DataAlt con, [var], e)
- | (con, var, e) <- zip3 (tyConDataCons sum_tc) vars es]
-
- from_con expr (ConRepr con r)
- = from_prod expr (mkConApp con $ map Type ty_args) r
-
- from_prod _ con EmptyProd = return con
- from_prod expr con (UnaryProd r)
- = do
- e <- from_comp expr r
- return $ con `App` e
-
- from_prod expr con (Prod { repr_tup_tc = tup_tc
- , repr_comp_tys = tys
- , repr_comps = comps
- })
- = do
- vars <- newLocalVars (fsLit "y") tys
- es <- zipWithM from_comp (map Var vars) comps
- return $ mkWildCase expr (exprType expr) res_ty
- [(DataAlt tup_con, vars, con `mkApps` es)]
- where
- [tup_con] = tyConDataCons tup_tc
-
- from_comp expr (Keep _ _) = return expr
- from_comp expr (Wrap ty)
- = do
- wrap <- builtin wrapTyCon
- return $ unwrapNewTypeBody wrap [ty] expr
-
-
-buildToArrPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
-buildToArrPRepr vect_tc prepr_tc pdata_tc r
- = do
- arg_ty <- mkPDataType el_ty
- res_ty <- mkPDataType =<< mkPReprType el_ty
- arg <- newLocalVar (fsLit "xs") arg_ty
-
- pdata_co <- mkBuiltinCo pdataTyCon
- let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
- co = mkAppCoercion pdata_co
- . mkSymCoercion
- $ mkTyConApp repr_co ty_args
-
- scrut = unwrapFamInstScrut pdata_tc ty_args (Var arg)
-
- (vars, result) <- to_sum r
-
- return . Lam arg
- $ mkWildCase scrut (mkTyConApp pdata_tc ty_args) res_ty
- [(DataAlt pdata_dc, vars, mkCoerce co result)]
- where
- ty_args = mkTyVarTys $ tyConTyVars vect_tc
- el_ty = mkTyConApp vect_tc ty_args
-
- [pdata_dc] = tyConDataCons pdata_tc
-
-
- to_sum EmptySum = do
- pvoid <- builtin pvoidVar
- return ([], Var pvoid)
- to_sum (UnarySum r) = to_con r
- to_sum (Sum { repr_psum_tc = psum_tc
- , repr_sel_ty = sel_ty
- , repr_con_tys = tys
- , repr_cons = cons
- })
- = do
- (vars, exprs) <- mapAndUnzipM to_con cons
- sel <- newLocalVar (fsLit "sel") sel_ty
- return (sel : concat vars, mk_result (Var sel) exprs)
- where
- [psum_con] = tyConDataCons psum_tc
- mk_result sel exprs = wrapFamInstBody psum_tc tys
- $ mkConApp psum_con
- $ map Type tys ++ (sel : exprs)
-
- to_con (ConRepr _ r) = to_prod r
-
- to_prod EmptyProd = do
- pvoid <- builtin pvoidVar
- return ([], Var pvoid)
- to_prod (UnaryProd r)
- = do
- pty <- mkPDataType (compOrigType r)
- var <- newLocalVar (fsLit "x") pty
- expr <- to_comp (Var var) r
- return ([var], expr)
-
- to_prod (Prod { repr_ptup_tc = ptup_tc
- , repr_comp_tys = tys
- , repr_comps = comps })
- = do
- ptys <- mapM (mkPDataType . compOrigType) comps
- vars <- newLocalVars (fsLit "x") ptys
- es <- zipWithM to_comp (map Var vars) comps
- return (vars, mk_result es)
- where
- [ptup_con] = tyConDataCons ptup_tc
- mk_result exprs = wrapFamInstBody ptup_tc tys
- $ mkConApp ptup_con
- $ map Type tys ++ exprs
-
- to_comp expr (Keep _ _) = return expr
-
- -- FIXME: this is bound to be wrong!
- to_comp expr (Wrap ty)
- = do
- wrap_tc <- builtin wrapTyCon
- (pwrap_tc, _) <- pdataReprTyCon (mkTyConApp wrap_tc [ty])
- return $ wrapNewTypeBody pwrap_tc [ty] expr
-
-
-buildFromArrPRepr :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
-buildFromArrPRepr vect_tc prepr_tc pdata_tc r
- = do
- arg_ty <- mkPDataType =<< mkPReprType el_ty
- res_ty <- mkPDataType el_ty
- arg <- newLocalVar (fsLit "xs") arg_ty
-
- pdata_co <- mkBuiltinCo pdataTyCon
- let Just repr_co = tyConFamilyCoercion_maybe prepr_tc
- co = mkAppCoercion pdata_co
- $ mkTyConApp repr_co var_tys
-
- scrut = mkCoerce co (Var arg)
-
- mk_result args = wrapFamInstBody pdata_tc var_tys
- $ mkConApp pdata_con
- $ map Type var_tys ++ args
-
- (expr, _) <- fixV $ \ ~(_, args) ->
- from_sum res_ty (mk_result args) scrut r
-
- return $ Lam arg expr
-
- -- (args, mk) <- from_sum res_ty scrut r
-
- -- let result = wrapFamInstBody pdata_tc var_tys
- -- . mkConApp pdata_dc
- -- $ map Type var_tys ++ args
-
- -- return $ Lam arg (mk result)
- where
- var_tys = mkTyVarTys $ tyConTyVars vect_tc
- el_ty = mkTyConApp vect_tc var_tys
-
- [pdata_con] = tyConDataCons pdata_tc
-
- from_sum _ res _ EmptySum = return (res, [])
- from_sum res_ty res expr (UnarySum r) = from_con res_ty res expr r
- from_sum res_ty res expr (Sum { repr_psum_tc = psum_tc
- , repr_sel_ty = sel_ty
- , repr_con_tys = tys
- , repr_cons = cons })
- = do
- sel <- newLocalVar (fsLit "sel") sel_ty
- ptys <- mapM mkPDataType tys
- vars <- newLocalVars (fsLit "xs") ptys
- (res', args) <- fold from_con res_ty res (map Var vars) cons
- let scrut = unwrapFamInstScrut psum_tc tys expr
- body = mkWildCase scrut (exprType scrut) res_ty
- [(DataAlt psum_con, sel : vars, res')]
- return (body, Var sel : args)
- where
- [psum_con] = tyConDataCons psum_tc
-
-
- from_con res_ty res expr (ConRepr _ r) = from_prod res_ty res expr r
-
- from_prod _ res _ EmptyProd = return (res, [])
- from_prod res_ty res expr (UnaryProd r)
- = from_comp res_ty res expr r
- from_prod res_ty res expr (Prod { repr_ptup_tc = ptup_tc
- , repr_comp_tys = tys
- , repr_comps = comps })
- = do
- ptys <- mapM mkPDataType tys
- vars <- newLocalVars (fsLit "ys") ptys
- (res', args) <- fold from_comp res_ty res (map Var vars) comps
- let scrut = unwrapFamInstScrut ptup_tc tys expr
- body = mkWildCase scrut (exprType scrut) res_ty
- [(DataAlt ptup_con, vars, res')]
- return (body, args)
- where
- [ptup_con] = tyConDataCons ptup_tc
-
- from_comp _ res expr (Keep _ _) = return (res, [expr])
- from_comp _ res expr (Wrap ty)
- = do
- wrap_tc <- builtin wrapTyCon
- (pwrap_tc, _) <- pdataReprTyCon (mkTyConApp wrap_tc [ty])
- return (res, [unwrapNewTypeBody pwrap_tc [ty]
- $ unwrapFamInstScrut pwrap_tc [ty] expr])
-
- fold f res_ty res exprs rs = foldrM f' (res, []) (zip exprs rs)
- where
- f' (expr, r) (res, args) = do
- (res', args') <- f res_ty res expr r
- return (res', args' ++ args)
-
-buildPRDict :: TyCon -> TyCon -> TyCon -> SumRepr -> VM CoreExpr
-buildPRDict vect_tc prepr_tc _ r
- = do
- dict <- sum_dict r
- pr_co <- mkBuiltinCo prTyCon
- let co = mkAppCoercion pr_co
- . mkSymCoercion
- $ mkTyConApp arg_co ty_args
- return (mkCoerce co dict)
- where
- ty_args = mkTyVarTys (tyConTyVars vect_tc)
- Just arg_co = tyConFamilyCoercion_maybe prepr_tc
-
- sum_dict EmptySum = prDFunOfTyCon =<< builtin voidTyCon
- sum_dict (UnarySum r) = con_dict r
- sum_dict (Sum { repr_sum_tc = sum_tc
- , repr_con_tys = tys
- , repr_cons = cons
- })
- = do
- dicts <- mapM con_dict cons
- dfun <- prDFunOfTyCon sum_tc
- return $ dfun `mkTyApps` tys `mkApps` dicts
-
- con_dict (ConRepr _ r) = prod_dict r
-
- prod_dict EmptyProd = prDFunOfTyCon =<< builtin voidTyCon
- prod_dict (UnaryProd r) = comp_dict r
- prod_dict (Prod { repr_tup_tc = tup_tc
- , repr_comp_tys = tys
- , repr_comps = comps })
- = do
- dicts <- mapM comp_dict comps
- dfun <- prDFunOfTyCon tup_tc
- return $ dfun `mkTyApps` tys `mkApps` dicts
-
- comp_dict (Keep _ pr) = return pr
- comp_dict (Wrap ty) = wrapPR ty
-
-
-buildPDataTyCon :: TyCon -> TyCon -> SumRepr -> VM TyCon
-buildPDataTyCon orig_tc vect_tc repr = fixV $ \repr_tc ->
- do
- name' <- cloneName mkPDataTyConOcc orig_name
- rhs <- buildPDataTyConRhs orig_name vect_tc repr_tc repr
- pdata <- builtin pdataTyCon
-
- liftDs $ buildAlgTyCon name'
- tyvars
- [] -- no stupid theta
- rhs
- rec_flag -- FIXME: is this ok?
- False -- FIXME: no generics
- False -- not GADT syntax
- (Just $ mk_fam_inst pdata vect_tc)
- where
- orig_name = tyConName orig_tc
- tyvars = tyConTyVars vect_tc
- rec_flag = boolToRecFlag (isRecursiveTyCon vect_tc)
-
-
-buildPDataTyConRhs :: Name -> TyCon -> TyCon -> SumRepr -> VM AlgTyConRhs
-buildPDataTyConRhs orig_name vect_tc repr_tc repr
- = do
- data_con <- buildPDataDataCon orig_name vect_tc repr_tc repr
- return $ DataTyCon { data_cons = [data_con], is_enum = False }
-
-buildPDataDataCon :: Name -> TyCon -> TyCon -> SumRepr -> VM DataCon
-buildPDataDataCon orig_name vect_tc repr_tc repr
- = do
- dc_name <- cloneName mkPDataDataConOcc orig_name
- comp_tys <- sum_tys repr
-
- liftDs $ buildDataCon dc_name
- False -- not infix
- (map (const HsNoBang) comp_tys)
- [] -- no field labels
- tvs
- [] -- no existentials
- [] -- no eq spec
- [] -- no context
- comp_tys
- (mkFamilyTyConApp repr_tc (mkTyVarTys tvs))
- repr_tc
- where
- tvs = tyConTyVars vect_tc
-
- sum_tys EmptySum = return []
- sum_tys (UnarySum r) = con_tys r
- sum_tys (Sum { repr_sel_ty = sel_ty
- , repr_cons = cons })
- = liftM (sel_ty :) (concatMapM con_tys cons)
-
- con_tys (ConRepr _ r) = prod_tys r
-
- prod_tys EmptyProd = return []
- prod_tys (UnaryProd r) = liftM singleton (comp_ty r)
- prod_tys (Prod { repr_comps = comps }) = mapM comp_ty comps
-
- comp_ty r = mkPDataType (compOrigType r)
-
-
-buildTyConBindings :: TyCon -> TyCon -> TyCon -> TyCon -> SumRepr
- -> VM Var