CristalCaveGem » LustreC

(********************************************************************)

(*                                                                  *)

(*  The LustreC compiler toolset   /  The LustreC Development Team  *)

(*  Copyright 2012 -    --   ONERA - CNRS - INPT                    *)

(*                                                                  *)

(*  LustreC is free software, distributed WITHOUT ANY WARRANTY      *)

(*  under the terms of the GNU Lesser General Public License        *)

(*  version 2.1.                                                    *)

(*                                                                  *)

(********************************************************************)

open Lustre_types

open Format

open Utils

(* Prints [v] as [pp_fun] would do, but adds a backslash at each end of line,

   following the C convention for multiple lines macro *)

let pp_as_c_macro pp_fun fmt v =

  let formatter_out_funs = pp_get_formatter_out_functions fmt () in

  let macro_newline () =

    begin

      formatter_out_funs.out_string "\\" 0 1;

      formatter_out_funs.out_newline ()

    end in

  begin

    pp_set_formatter_out_functions fmt { formatter_out_funs with out_newline = macro_newline };

    pp_fun fmt v;

    pp_set_formatter_out_functions fmt formatter_out_funs;

  end

let rec pp_var_struct_type_field fmt (label, tdesc) =

  fprintf fmt "%a : %a;" pp_print_string label pp_var_type_dec_desc tdesc

and pp_var_type_dec_desc fmt tdesc =

  match tdesc with 

  | Tydec_any -> fprintf fmt "<any>"

  | Tydec_int -> fprintf fmt "int"

  | Tydec_real -> fprintf fmt "real"

  (* | Tydec_float -> fprintf fmt "float" *)

  | Tydec_bool -> fprintf fmt "bool"

  | Tydec_clock t -> fprintf fmt "%a clock" pp_var_type_dec_desc t

  | Tydec_const t -> fprintf fmt "%s" t

  | Tydec_enum id_list -> fprintf fmt "enum {%a }" (fprintf_list ~sep:", " pp_print_string) id_list

  | Tydec_struct f_list -> fprintf fmt "struct {%a }" (fprintf_list ~sep:" " pp_var_struct_type_field) f_list

  | Tydec_array (s, t) -> fprintf fmt "%a^%a" pp_var_type_dec_desc t Dimension.pp_dimension s

let pp_var_type_dec fmt ty =

  pp_var_type_dec_desc fmt ty.ty_dec_desc

let pp_var_name fmt id = fprintf fmt "%s" id.var_id

let pp_var_type fmt id =

  if !Options.print_dec_types then

    pp_var_type_dec fmt id.var_dec_type

  else

    Types.print_node_ty fmt id.var_type

let pp_var_clock fmt id = Clocks.print_ck_suffix fmt id.var_clock

let pp_eq_lhs = fprintf_list ~sep:", " pp_print_string

let pp_var fmt id =

  fprintf fmt "%s%s: %a"

    (if id.var_dec_const then "const " else "")

    id.var_id

    pp_var_type id

let pp_vars fmt vars =

  fprintf_list ~sep:"; " pp_var fmt vars

let pp_quantifiers fmt (q, vars) =

  match q with

    | Forall -> fprintf fmt "forall %a" pp_vars vars 

    | Exists -> fprintf fmt "exists %a" pp_vars vars 

let rec pp_struct_const_field fmt (label, c) =

  fprintf fmt "%a = %a;" pp_print_string label pp_const c

and pp_const fmt c = 

  match c with

    | Const_int i -> pp_print_int fmt i

    | Const_real (c, e, s) -> fprintf fmt "%s%s"

                                s

                                (if String.get s (-1 + String.length s) = '.' then "0" else "")

    (*if e = 0 then pp_print_int fmt c else if e < 0 then Format.fprintf fmt "%ie%i" c (-e) else Format.fprintf fmt "%ie-%i" c e *)

    (* | Const_float r -> pp_print_float fmt r *)

    | Const_tag  t -> pp_print_string fmt t

    | Const_array ca -> fprintf fmt "[%a]" (Utils.fprintf_list ~sep:"," pp_const) ca

    | Const_struct fl -> fprintf fmt "{%a }" (Utils.fprintf_list ~sep:" " pp_struct_const_field) fl

    (* used only for annotations *)

    | Const_string s -> pp_print_string fmt ("\"" ^ s ^ "\"")

    | Const_modeid s -> pp_print_string fmt ("\"" ^ s ^ "\"")

let pp_annot_key fmt kwds =

  match kwds with

  | [] -> assert false

  | [x] -> pp_print_string fmt x

  | _ -> fprintf fmt "/%a/" (fprintf_list ~sep:"/" pp_print_string) kwds

let rec pp_expr fmt expr =

  (match expr.expr_annot with 

  | None -> fprintf fmt "%t" 

  | Some ann -> fprintf fmt "@[(%a %t)@]" pp_expr_annot ann)

    (fun fmt -> 

      match expr.expr_desc with

    | Expr_const c -> pp_const fmt c

    | Expr_ident id -> fprintf fmt "%s" id

    | Expr_array a -> fprintf fmt "[%a]" pp_tuple a

    | Expr_access (a, d) -> fprintf fmt "%a[%a]" pp_expr a Dimension.pp_dimension d

    | Expr_power (a, d) -> fprintf fmt "(%a^%a)" pp_expr a Dimension.pp_dimension d

    | Expr_tuple el -> fprintf fmt "(%a)" pp_tuple el

    | Expr_ite (c, t, e) -> fprintf fmt "@[<hov 1>(if %a then@ @[<hov 2>%a@]@ else@ @[<hov 2>%a@]@])" pp_expr c pp_expr t pp_expr e

    | Expr_arrow (e1, e2) -> fprintf fmt "(%a -> %a)" pp_expr e1 pp_expr e2

    | Expr_fby (e1, e2) -> fprintf fmt "%a fby %a" pp_expr e1 pp_expr e2

    | Expr_pre e -> fprintf fmt "pre %a" pp_expr e

    | Expr_when (e, id, l) -> fprintf fmt "%a when %s(%s)" pp_expr e l id

    | Expr_merge (id, hl) -> 

      fprintf fmt "merge %s %a" id pp_handlers hl

    | Expr_appl (id, e, r) -> pp_app fmt id e r

    )

and pp_tuple fmt el =

 fprintf_list ~sep:"," pp_expr fmt el

and pp_handler fmt (t, h) =

 fprintf fmt "(%s -> %a)" t pp_expr h

and pp_handlers fmt hl =

 fprintf_list ~sep:" " pp_handler fmt hl

and pp_app fmt id e r =

  match r with

  | None -> pp_call fmt id e

  | Some c ->

     if !Options.kind2_print &&

          not (List.mem id Basic_library.internal_funs) then

       (* We only translate calls to nodes in kind2. The other may be

          rejected by Kind2 *)

       fprintf fmt "(restart %s every (%a)) (%a)"

         id

         pp_expr c

         pp_expr e

     else

       fprintf fmt "%t every (%a)" (fun fmt -> pp_call fmt id e) pp_expr c 

and pp_call fmt id e =

  match id, e.expr_desc with

  | "+", Expr_tuple([e1;e2]) -> fprintf fmt "(%a + %a)" pp_expr e1 pp_expr e2

  | "uminus", _ -> fprintf fmt "(- %a)" pp_expr e

  | "-", Expr_tuple([e1;e2]) -> fprintf fmt "(%a - %a)" pp_expr e1 pp_expr e2

  | "*", Expr_tuple([e1;e2]) -> fprintf fmt "(%a * %a)" pp_expr e1 pp_expr e2

  | "/", Expr_tuple([e1;e2]) -> fprintf fmt "(%a / %a)" pp_expr e1 pp_expr e2

  | "mod", Expr_tuple([e1;e2]) -> fprintf fmt "(%a mod %a)" pp_expr e1 pp_expr e2

  | "&&", Expr_tuple([e1;e2]) -> fprintf fmt "(%a and %a)" pp_expr e1 pp_expr e2

  | "||", Expr_tuple([e1;e2]) -> fprintf fmt "(%a or %a)" pp_expr e1 pp_expr e2

  | "xor", Expr_tuple([e1;e2]) -> fprintf fmt "(%a xor %a)" pp_expr e1 pp_expr e2

  | "impl", Expr_tuple([e1;e2]) -> fprintf fmt "(%a => %a)" pp_expr e1 pp_expr e2

  | "<", Expr_tuple([e1;e2]) -> fprintf fmt "(%a < %a)" pp_expr e1 pp_expr e2

  | "<=", Expr_tuple([e1;e2]) -> fprintf fmt "(%a <= %a)" pp_expr e1 pp_expr e2

  | ">", Expr_tuple([e1;e2]) -> fprintf fmt "(%a > %a)" pp_expr e1 pp_expr e2

  | ">=", Expr_tuple([e1;e2]) -> fprintf fmt "(%a >= %a)" pp_expr e1 pp_expr e2

  | "!=", Expr_tuple([e1;e2]) -> fprintf fmt "(%a <> %a)" pp_expr e1 pp_expr e2

  | "=", Expr_tuple([e1;e2]) -> fprintf fmt "(%a = %a)" pp_expr e1 pp_expr e2

  | "not", _ -> fprintf fmt "(not %a)" pp_expr e

  | _, Expr_tuple _ -> fprintf fmt "%s %a" id pp_expr e

  | _ -> fprintf fmt "%s (%a)" id pp_expr e

and pp_eexpr fmt e =

  fprintf fmt "%a%t %a"

    (Utils.fprintf_list ~sep:"; " pp_quantifiers) e.eexpr_quantifiers

    (fun fmt -> match e.eexpr_quantifiers with [] -> () | _ -> fprintf fmt ";")

    pp_expr e.eexpr_qfexpr

and  pp_sf_value fmt e =

   fprintf fmt "%a"

     (* (Utils.fprintf_list ~sep:"; " pp_quantifiers) e.eexpr_quantifiers *)

     (* (fun fmt -> match e.eexpr_quantifiers *)

     (*             with [] -> () *)

     (*                | _ -> fprintf fmt ";") *)

     pp_expr e.eexpr_qfexpr

and pp_s_function fmt expr_ann =

  let pp_annot fmt (kwds, ee) =

    fprintf fmt " %t : %a"

                   (fun fmt -> match kwds with

                               | [] -> assert false

                               | [x] -> pp_print_string fmt x

                               | _ -> fprintf fmt "%a" (fprintf_list ~sep:"/" pp_print_string) kwds)

                   pp_sf_value ee

  in

  fprintf_list ~sep:"@ " pp_annot fmt expr_ann.annots

and pp_expr_annot fmt expr_ann =

  let pp_annot fmt (kwds, ee) =

    fprintf fmt "(*!%a: %a; *)"

      pp_annot_key kwds

      pp_eexpr ee

  in

  fprintf_list ~sep:"@ " pp_annot fmt expr_ann.annots

let pp_asserts fmt asserts =

  match asserts with 

  | _::_ -> (

    fprintf fmt "(* Asserts definitions *)@ ";

    fprintf_list ~sep:"@ " (fun fmt assert_ -> 

      let expr = assert_.assert_expr in

      fprintf fmt "assert %a;" pp_expr expr 

    ) fmt asserts 

  )

  | _ -> ()

(*

let pp_node_var fmt id = fprintf fmt "%s%s: %a(%a)%a" (if id.var_dec_const then "const " else "") id.var_id print_dec_ty id.var_dec_type.ty_dec_desc Types.print_ty id.var_type Clocks.print_ck_suffix id.var_clock

*)

let pp_node_var fmt id =

  begin

    fprintf fmt "%s%s: %a%a"

      (if id.var_dec_const then "const " else "")

      id.var_id

      pp_var_type id

      pp_var_clock id;

    match id.var_dec_value with

    | None -> () 

    | Some v -> fprintf fmt " = %a" pp_expr v

  end 

let pp_node_args = fprintf_list ~sep:";@ " pp_node_var 

let pp_node_eq fmt eq = 

  fprintf fmt "%a = %a;" 

    pp_eq_lhs eq.eq_lhs

    pp_expr eq.eq_rhs

let pp_restart fmt restart =

  fprintf fmt "%s" (if restart then "restart" else "resume")

let pp_unless fmt (_, expr, restart, st) =

  fprintf fmt "unless %a %a %s"

    pp_expr expr

    pp_restart restart

    st

let pp_until fmt (_, expr, restart, st) =

  fprintf fmt "until %a %a %s"

    pp_expr expr

    pp_restart restart

    st

let rec pp_handler fmt handler =

  fprintf fmt "state %s:@ @[<v 2>  %a%t%alet@,@[<v 2>  %a@ %a@ %a@]@,tel@ %a@]"

    handler.hand_state

    (Utils.fprintf_list ~sep:"@ " pp_unless) handler.hand_unless

    (fun fmt -> if not ([] = handler.hand_unless) then fprintf fmt "@ ")

    (fun fmt locals ->

      match locals with [] -> () | _ ->

	fprintf fmt "@[<v 4>var %a@]@ " 

	  (Utils.fprintf_list ~sep:"@ " 

	     (fun fmt v -> fprintf fmt "%a;" pp_node_var v))

	  locals)

    handler.hand_locals

    (fprintf_list ~sep:"@ " pp_expr_annot) handler.hand_annots

    pp_node_stmts handler.hand_stmts

    pp_asserts handler.hand_asserts

    (Utils.fprintf_list ~sep:"@," pp_until) handler.hand_until

and pp_node_stmt fmt stmt =

  match stmt with

  | Eq eq -> pp_node_eq fmt eq

  | Aut aut -> pp_node_aut fmt aut

and pp_node_stmts fmt stmts = fprintf_list ~sep:"@ " pp_node_stmt fmt stmts

and pp_node_aut fmt aut =

  fprintf fmt "@[<v 0>automaton %s@,%a@]"

    aut.aut_id

    (Utils.fprintf_list ~sep:"@ " pp_handler) aut.aut_handlers

and pp_node_eqs fmt eqs = fprintf_list ~sep:"@ " pp_node_eq fmt eqs

let pp_typedef fmt ty =

  fprintf fmt "type %s = %a;" ty.tydef_id pp_var_type_dec_desc ty.tydef_desc

let pp_typedec fmt ty =

  fprintf fmt "type %s;" ty.tydec_id

(* let rec pp_var_type fmt ty =  *)

(*   fprintf fmt "%a" (match ty.tdesc with  *)

(*     | Tvar | Tarrow | Tlink | Tunivar -> assert false *)

(*     | Tint -> pp_print_string fmt "int" *)

(*     | Treal -> pp_print_string fmt "real" *)

(*     | Tbool -> pp_print_string fmt "bool" *)

(*     | Trat -> pp_print_string fmt "rat" *)

(*     | Tclock -> pp_print_string fmt "clock"  *)

(*     | Ttuple tel -> fprintf_list ~sep:" * " pp_var_type fmt tel *)

(*   ) *)

(* let pp_quantifiers fmt (q, vars) =

 *   match q with

 *     | Forall -> fprintf fmt "forall %a" pp_vars vars 

 *     | Exists -> fprintf fmt "exists %a" (fprintf_list ~sep:"; " pp_var) vars  *)

(*let pp_eexpr fmt e =

  fprintf fmt "%a%t %a"

    (Utils.fprintf_list ~sep:"; " pp_quantifiers) e.eexpr_quantifiers

    (fun fmt -> match e.eexpr_quantifiers with [] -> () | _ -> fprintf fmt ";")

    pp_expr e.eexpr_qfexpr

 *)

let pp_spec_eq fmt eq = 

  fprintf fmt "var %a : %a = %a;" 

    pp_eq_lhs eq.eq_lhs

    Types.print_node_ty eq.eq_rhs.expr_type

    pp_expr eq.eq_rhs

let pp_spec_stmt fmt stmt =

  match stmt with

  | Eq eq -> pp_spec_eq fmt eq

  | Aut aut -> assert false (* Not supported yet *)

let pp_spec fmt spec =

  (* const are prefixed with const in pp_var and with nothing for regular

     variables. We adapt the call to produce the appropriate output. *)

    fprintf_list ~eol:"@, " ~sep:"@, " (fun fmt v ->

    fprintf fmt "%a = %t;"

      pp_var v

      (fun fmt -> match v.var_dec_value with None -> assert false | Some e -> pp_expr fmt e)

    ) fmt spec.consts;

  fprintf_list ~eol:"@, " ~sep:"@, " (fun fmt s -> pp_spec_stmt fmt s) fmt spec.stmts;

  fprintf_list ~eol:"@, " ~sep:"@, " (fun fmt r -> fprintf fmt "assume %a;" pp_eexpr r) fmt spec.assume;

  fprintf_list ~eol:"@, " ~sep:"@, " (fun fmt r -> fprintf fmt "guarantee %a;" pp_eexpr r) fmt spec.guarantees;

  fprintf_list ~eol:"@, " ~sep:"@, " (fun fmt mode ->

    fprintf fmt "mode %s (@[<v 0>%a@ %a@]);" 

      mode.mode_id

      (fprintf_list ~eol:"" ~sep:"@ " (fun fmt r -> fprintf fmt "require %a;" pp_eexpr r)) mode.require

      (fprintf_list ~eol:"" ~sep:"@ " (fun fmt r -> fprintf fmt "ensure %a;" pp_eexpr r)) mode.ensure

  ) fmt spec.modes;

  fprintf_list ~eol:"@, " ~sep:"@, " (fun fmt import ->

    fprintf fmt "import %s (%a) returns (%a);" 

      import.import_nodeid

      pp_expr import.inputs

      pp_expr import.outputs

  ) fmt spec.imports

(* Project the contract node as a pure contract: local memories are pushed back in the contract definition. Should mainly be used to print it *) 

let node_as_contract nd =

  match nd.node_spec with

  | None | Some (NodeSpec _) -> raise (Invalid_argument "Not a contract")

  | Some (Contract c) -> (

    (* While a processed contract shall have no locals, sttms nor

       consts, an unprocessed one could. So we conservatively merge

       elements, to enable printing unprocessed contracts *)

    let consts, locals = List.partition(fun v -> v.var_dec_const) nd.node_locals in

    { c with

      consts = consts @ c.consts;

      locals = locals @ c.locals;

      stmts = nd.node_stmts @ c.stmts;

    }

  )

(* Printing top contract as comments in regular output and as contract

   in kind2 *)

let pp_contract fmt nd =    

   let c = node_as_contract nd in

  fprintf fmt "@[<v 2>%scontract %s(%a) returns (%a);@ "

    (if !Options.kind2_print then "" else "(*@")

    nd.node_id

    pp_node_args nd.node_inputs

    pp_node_args nd.node_outputs;

  fprintf fmt "@[<v 2>let@ ";

  pp_spec fmt c;

  fprintf fmt "@]@ tel@ @]%s@ "

  (if !Options.kind2_print then "" else "*)")

let pp_spec_as_comment fmt (inl, outl, spec) =

  match spec with

  | Contract c -> (* should have been processed by now *)

     fprintf fmt "@[<hov 2>(*@contract@ ";

     pp_spec fmt c;

     fprintf fmt "@]*)@ "

  | NodeSpec name -> (* Pushing stmts in contract. We update the

                      original information with the computed one in

                      nd. *)

     let pp_l = fprintf_list ~sep:"," pp_var_name in

     fprintf fmt "@[<hov 2>(*@contract import %s(%a) returns (%a); @]*)@ "

       name

       pp_l inl

       pp_l outl

let pp_node fmt nd =

  fprintf fmt "@[<v 0>";

  (* Prototype *)

  fprintf fmt  "%s @[<hov 0>%s (@[%a)@]@ returns (@[%a)@]@]@ "

    (if nd.node_dec_stateless then "function" else "node")

    nd.node_id

    pp_node_args nd.node_inputs

    pp_node_args nd.node_outputs;

  (* Contracts *)

  fprintf fmt "%a"

    (fun fmt s -> match s with Some s -> pp_spec_as_comment fmt (nd.node_inputs, nd.node_outputs, s) | _ -> ()) nd.node_spec

    (* (fun fmt -> match nd.node_spec with None -> () | Some _ -> fprintf fmt "@ ") *);

  (* Locals *)

  fprintf fmt "%a" (fun fmt locals ->

      match locals with [] -> () | _ ->

                                    fprintf fmt "@[<v 4>var %a@]@ " 

                                      (fprintf_list ~sep:"@ " 

	                                 (fun fmt v -> fprintf fmt "%a;" pp_node_var v))

                                      locals

    ) nd.node_locals;

  (* Checks *)

  fprintf fmt "%a"

    (fun fmt checks ->

      match checks with [] -> () | _ ->

                                    fprintf fmt "@[<v 4>check@ %a@]@ " 

                                      (fprintf_list ~sep:"@ " 

	                                 (fun fmt d -> fprintf fmt "%a" Dimension.pp_dimension d))

                                      checks

    ) nd.node_checks;

  (* Body *)

  fprintf fmt "let@[<h 2>   @ @[<v>";

  (* Annotations *)

  fprintf fmt "%a@ " (fprintf_list ~sep:"@ " pp_expr_annot) nd.node_annot;

  (* Statements *)

  fprintf fmt "%a@ " pp_node_stmts nd.node_stmts;

  (* Asserts *)    

  fprintf fmt "%a" pp_asserts nd.node_asserts;

  (* closing boxes body (2)  and node (1) *) 

  fprintf fmt "@]@]@ tel@]@ "

(*fprintf fmt "@ /* Scheduling: %a */ @ " (fprintf_list ~sep:", " pp_print_string) (Scheduling.schedule_node nd)*)

let pp_node fmt nd =

  match nd.node_spec, nd.node_iscontract with

  | None, false

    | Some (NodeSpec _), false 

    -> pp_node fmt nd

  | Some (Contract _), false -> pp_node fmt nd (* may happen early in the compil process *)

  | Some (Contract _), true -> pp_contract fmt nd 

  | _ -> assert false

let pp_imported_node fmt ind = 

  fprintf fmt "@[<v 0>";

  (* Prototype *)

  fprintf fmt  "%s @[<hov 0>%s (@[%a)@]@ returns (@[%a)@]@]@ "

    (if ind.nodei_stateless then "function" else "node")

    ind.nodei_id

    pp_node_args ind.nodei_inputs

    pp_node_args ind.nodei_outputs;

  (* Contracts *)

  fprintf fmt "%a%t"

    (fun fmt s -> match s with Some s -> pp_spec_as_comment fmt (ind.nodei_inputs, ind.nodei_outputs, s) | _ -> ()) ind.nodei_spec

    (fun fmt -> match ind.nodei_spec with None -> () | Some _ -> fprintf fmt "@ ");

  fprintf fmt "@]@ "

let pp_const_decl fmt cdecl =

  fprintf fmt "%s = %a;" cdecl.const_id pp_const cdecl.const_value

let pp_const_decl_list fmt clist = 

  fprintf_list ~sep:"@ " pp_const_decl fmt clist

let pp_decl fmt decl =

  match decl.top_decl_desc with

  | Node nd -> fprintf fmt "%a" pp_node nd

  | ImportedNode ind -> (* We do not print imported nodes *)

     fprintf fmt "(* imported %a; *)" pp_imported_node ind

  | Const c -> fprintf fmt "const %a" pp_const_decl c

  | Open (local, s) -> if local then fprintf fmt "#open \"%s\"" s else fprintf fmt "#open <%s>" s

  | Include s -> fprintf fmt "include \"%s\"" s

  | TypeDef tdef -> fprintf fmt "%a" pp_typedef tdef

let pp_prog fmt prog =

  (* we first print types: the function SortProg.sort could do the job but ut

     introduces a cyclic dependance *)

  let open_decl, prog =

    List.partition (fun decl -> match decl.top_decl_desc with Open _ -> true | _ -> false) prog

  in

  let type_decl, prog =

    List.partition (fun decl -> match decl.top_decl_desc with TypeDef _ -> true | _ -> false) prog

  in

  fprintf fmt "@[<v 0>%a@]" (fprintf_list ~sep:"@ " pp_decl) (open_decl@type_decl@prog)

(* Gives a short overview of model content. Do not print all node content *)

let pp_short_decl fmt decl =

  match decl.top_decl_desc with

  | Node nd -> fprintf fmt "node %s@ " nd.node_id

  | ImportedNode ind -> fprintf fmt "imported node %s" ind.nodei_id

  | Const c -> fprintf fmt "const %a@ " pp_const_decl c

  | Include s -> fprintf fmt "include \"%s\"" s

  | Open (local, s) -> if local then fprintf fmt "#open \"%s\"@ " s else fprintf fmt "#open <%s>@ " s

  | TypeDef tdef -> fprintf fmt "type %s;@ " tdef.tydef_id

let pp_lusi fmt decl = 

  match decl.top_decl_desc with

  | ImportedNode ind -> fprintf fmt "%a;@ " pp_imported_node ind

  | Const c -> fprintf fmt "const %a@ " pp_const_decl c

  | Include s -> fprintf fmt "include \"%s\"" s

  | Open (local, s) -> if local then fprintf fmt "#open \"%s\"@ " s else fprintf fmt "#open <%s>@ " s

  | TypeDef tdef -> fprintf fmt "%a@ " pp_typedef tdef

  | Node _ -> assert false

let pp_lusi_header fmt basename prog =

  fprintf fmt "@[<v 0>";

  fprintf fmt "(* Generated Lustre Interface file from %s.lus *)@ " basename;

  fprintf fmt "(* by Lustre-C compiler version %s, %a *)@ " Version.number pp_date (Unix.gmtime (Unix.time ()));

  fprintf fmt "(* Feel free to mask some of the definitions by removing them from this file. *)@ @ ";

  List.iter (fprintf fmt "%a@ " pp_lusi) prog;

  fprintf fmt "@]@."

let pp_offset fmt offset =

  match offset with

  | Index i -> fprintf fmt "[%a]" Dimension.pp_dimension i

  | Field f -> fprintf fmt ".%s" f

(* Local Variables: *)

(* compile-command:"make -C .." *)

(* End: *)