Revision ca7ff3f7
Added by Lélio Brun over 1 year ago
| src/checks/access.ml | ||
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(* *) |
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(********************************************************************) |
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(** Access checking module. Done after typing. Generates dimension constraints stored in nodes *) |
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(** Access checking module. Done after typing. Generates dimension constraints |
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stored in nodes *) |
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let debug _fmt _args = () (* Format.eprintf "%a" *) |
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(* Though it shares similarities with the clock calculus module, no code |
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is shared. Simple environments, very limited identifier scoping, no |
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identifier redefinition allowed. *) |
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let debug _fmt _args = () |
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(* Format.eprintf "%a" *) |
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(* Though it shares similarities with the clock calculus module, no code is |
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shared. Simple environments, very limited identifier scoping, no identifier |
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redefinition allowed. *) |
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open Utils |
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(* Yes, opening both modules is dirty as some type names will be |
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overwritten, yet this makes notations far lighter.*) |
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(* Yes, opening both modules is dirty as some type names will be overwritten, |
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yet this makes notations far lighter.*) |
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open Lustre_types |
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open Corelang |
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module ConstraintModule = |
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struct (* bool dimension module *)
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module ConstraintModule = struct
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(* bool dimension module *)
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type t = Dimension.dim_expr |
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let equal d1 d2 = Dimension.is_eq_dimension d1 d2 |
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let compare d1 d2 = if equal d1 d2 then 0 else compare d1.Dimension.dim_id d2.Dimension.dim_id |
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let compare d1 d2 = |
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if equal d1 d2 then 0 else compare d1.Dimension.dim_id d2.Dimension.dim_id |
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let hash n = Hashtbl.hash n |
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end |
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module CSet = Set.Make(ConstraintModule) |
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module CSet = Set.Make (ConstraintModule)
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(** [check_expr env expr] checks expression [expr] and gathers constraints |
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in set [checks]. *)
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(** [check_expr env expr] checks expression [expr] and gathers constraints in
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set [checks]. *) |
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let rec check_expr checks expr = |
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(*Format.eprintf "check_expr %a with type %a@." Printers.pp_expr expr Types.print_ty expr.expr_type;*) |
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let res = |
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match expr.expr_desc with |
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| Expr_const _ |
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| Expr_ident _ -> checks |
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| Expr_array elist -> List.fold_left check_expr checks elist |
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| Expr_access (e1, d) -> check_expr (CSet.add (Dimension.check_access expr.expr_loc (Types.array_type_dimension e1.expr_type) d) checks) e1 |
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(*Format.eprintf "check_expr %a with type %a@." Printers.pp_expr expr |
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Types.print_ty expr.expr_type;*) |
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let res = |
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match expr.expr_desc with |
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| Expr_const _ | Expr_ident _ -> |
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checks |
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| Expr_array elist -> |
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List.fold_left check_expr checks elist |
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| Expr_access (e1, d) -> |
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check_expr |
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(CSet.add |
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(Dimension.check_access expr.expr_loc |
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(Types.array_type_dimension e1.expr_type) |
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d) |
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checks) |
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e1 |
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(* TODO: check dimensions *) |
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| Expr_power (e1, _) -> check_expr checks e1 |
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| Expr_tuple elist -> List.fold_left check_expr checks elist |
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| Expr_ite (c, t, e) -> List.fold_left check_expr checks [c; t; e] |
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| Expr_appl (_, args, _) -> check_expr checks args |
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| Expr_fby (e1,e2) |
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| Expr_arrow (e1,e2) -> check_expr (check_expr checks e1) e2 |
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| Expr_pre e1 |
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| Expr_when (e1,_,_) -> check_expr checks e1 |
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| Expr_merge (_,hl) -> List.fold_left (fun checks (_, h) -> check_expr checks h) checks hl |
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in (*Format.eprintf "typing %B %a at %a = %a@." const Printers.pp_expr expr Location.pp_loc expr.expr_loc Types.print_ty res;*) res |
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| Expr_power (e1, _) -> |
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check_expr checks e1 |
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| Expr_tuple elist -> |
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List.fold_left check_expr checks elist |
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| Expr_ite (c, t, e) -> |
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List.fold_left check_expr checks [ c; t; e ] |
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| Expr_appl (_, args, _) -> |
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check_expr checks args |
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| Expr_fby (e1, e2) | Expr_arrow (e1, e2) -> |
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check_expr (check_expr checks e1) e2 |
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| Expr_pre e1 | Expr_when (e1, _, _) -> |
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check_expr checks e1 |
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| Expr_merge (_, hl) -> |
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List.fold_left (fun checks (_, h) -> check_expr checks h) checks hl |
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in |
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(*Format.eprintf "typing %B %a at %a = %a@." const Printers.pp_expr expr |
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Location.pp_loc expr.expr_loc Types.print_ty res;*) |
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res |
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let rec check_var_decl_type loc checks ty = |
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if Types.is_array_type ty |
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then |
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if Types.is_array_type ty then |
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check_var_decl_type loc |
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(CSet.add (Dimension.check_bound loc (Types.array_type_dimension ty)) checks) |
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(Types.array_element_type ty) |
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(CSet.add |
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(Dimension.check_bound loc (Types.array_type_dimension ty)) |
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checks) |
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(Types.array_element_type ty) |
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else checks |
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let check_var_decl checks vdecl = |
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check_var_decl_type vdecl.var_loc checks vdecl.var_type |
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(** [check_node nd] checks node [nd]. |
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The resulting constraints are stored in nodes. *)
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(** [check_node nd] checks node [nd]. The resulting constraints are stored in
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nodes. *) |
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let check_node nd = |
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let checks = CSet.empty in |
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let checks = |
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List.fold_left check_var_decl checks (get_node_vars nd) in |
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let checks = List.fold_left check_var_decl checks (get_node_vars nd) in |
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let checks = |
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let eqs, auts = get_node_eqs nd in |
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assert (auts = []); (* Not checking automata yet . *) |
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List.fold_left (fun checks eq -> check_expr checks eq.eq_rhs) checks eqs in |
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assert (auts = []); |
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(* Not checking automata yet . *) |
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List.fold_left (fun checks eq -> check_expr checks eq.eq_rhs) checks eqs |
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in |
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nd.node_checks <- CSet.elements checks |
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let check_top_decl decl = |
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match decl.top_decl_desc with |
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| Node nd -> check_node nd |
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| _ -> () |
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let check_prog decls = |
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List.iter check_top_decl decls |
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match decl.top_decl_desc with Node nd -> check_node nd | _ -> () |
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let check_prog decls = List.iter check_top_decl decls |
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(* Local Variables: *) |
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(* compile-command:"make -C .." *) |
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