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(********************************************************************)
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(*                                                                  *)
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(*  The LustreC compiler toolset   /  The LustreC Development Team  *)
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(*  Copyright 2012 -    --   ONERA - CNRS - INPT                    *)
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(*                                                                  *)
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(*  LustreC is free software, distributed WITHOUT ANY WARRANTY      *)
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(*  under the terms of the GNU Lesser General Public License        *)
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(*  version 2.1.                                                    *)
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(*                                                                  *)
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(********************************************************************)
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open LustreSpec
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open Corelang
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open Clocks
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open Causality
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exception NormalizationError
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module OrdVarDecl:Map.OrderedType with type t=var_decl =
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  struct type t = var_decl;; let compare = compare end
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module ISet = Set.Make(OrdVarDecl)
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let rec pp_val fmt v =
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  match v.value_desc with
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    | Cst c         -> Printers.pp_const fmt c 
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    | LocalVar v    -> Format.pp_print_string fmt v.var_id
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    | StateVar v    -> Format.pp_print_string fmt v.var_id
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    | Array vl      -> Format.fprintf fmt "[%a]" (Utils.fprintf_list ~sep:", " pp_val)  vl
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    | Access (t, i) -> Format.fprintf fmt "%a[%a]" pp_val t pp_val i
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    | Power (v, n)  -> Format.fprintf fmt "(%a^%a)" pp_val v pp_val n
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    | Fun (n, vl)   -> Format.fprintf fmt "%s (%a)" n (Utils.fprintf_list ~sep:", " pp_val)  vl
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let rec pp_instr fmt i =
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  match i with
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    | MLocalAssign (i,v) -> Format.fprintf fmt "%s<-l- %a" i.var_id pp_val v
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    | MStateAssign (i,v) -> Format.fprintf fmt "%s<-s- %a" i.var_id pp_val v
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    | MReset i           -> Format.fprintf fmt "reset %s" i
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    | MNoReset i         -> Format.fprintf fmt "noreset %s" i
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    | MStep (il, i, vl)  ->
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      Format.fprintf fmt "%a = %s (%a)"
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	(Utils.fprintf_list ~sep:", " (fun fmt v -> Format.pp_print_string fmt v.var_id)) il
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	i
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	(Utils.fprintf_list ~sep:", " pp_val) vl
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    | MBranch (g,hl)     ->
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      Format.fprintf fmt "@[<v 2>case(%a) {@,%a@,}@]"
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	pp_val g
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	(Utils.fprintf_list ~sep:"@," pp_branch) hl
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    | MComment s -> Format.pp_print_string fmt s
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and pp_branch fmt (t, h) =
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  Format.fprintf fmt "@[<v 2>%s:@,%a@]" t (Utils.fprintf_list ~sep:"@," pp_instr) h
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and pp_instrs fmt il =
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  Format.fprintf fmt "@[<v 2>%a@]" (Utils.fprintf_list ~sep:"@," pp_instr) il
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type step_t = {
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  step_checks: (Location.t * value_t) list;
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  step_inputs: var_decl list;
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  step_outputs: var_decl list;
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  step_locals: var_decl list;
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  step_instrs: instr_t list;
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  step_asserts: value_t list;
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}
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type static_call = top_decl * (Dimension.dim_expr list)
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type machine_t = {
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  mname: node_desc;
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  mmemory: var_decl list;
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  mcalls: (ident * static_call) list; (* map from stateful/stateless instance to node, no internals *)
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  minstances: (ident * static_call) list; (* sub-map of mcalls, from stateful instance to node *)
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  minit: instr_t list;
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  mstatic: var_decl list; (* static inputs only *)
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  mconst: instr_t list; (* assignments of node constant locals *)
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  mstep: step_t;
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  mspec: node_annot option;
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  mannot: expr_annot list;
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}
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let pp_step fmt s =
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  Format.fprintf fmt "@[<v>inputs : %a@ outputs: %a@ locals : %a@ checks : %a@ instrs : @[%a@]@ asserts : @[%a@]@]@ "
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    (Utils.fprintf_list ~sep:", " Printers.pp_var) s.step_inputs
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    (Utils.fprintf_list ~sep:", " Printers.pp_var) s.step_outputs
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    (Utils.fprintf_list ~sep:", " Printers.pp_var) s.step_locals
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    (Utils.fprintf_list ~sep:", " (fun fmt (_, c) -> pp_val fmt c)) s.step_checks
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    (Utils.fprintf_list ~sep:"@ " pp_instr) s.step_instrs
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    (Utils.fprintf_list ~sep:", " pp_val) s.step_asserts
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let pp_static_call fmt (node, args) =
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 Format.fprintf fmt "%s<%a>"
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   (node_name node)
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   (Utils.fprintf_list ~sep:", " Dimension.pp_dimension) args
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let pp_machine fmt m =
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  Format.fprintf fmt
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    "@[<v 2>machine %s@ mem      : %a@ instances: %a@ init     : %a@ const    : %a@ step     :@   @[<v 2>%a@]@ @  spec : @[%t@]@  annot : @[%a@]@]@ "
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    m.mname.node_id
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    (Utils.fprintf_list ~sep:", " Printers.pp_var) m.mmemory
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    (Utils.fprintf_list ~sep:", " (fun fmt (o1, o2) -> Format.fprintf fmt "(%s, %a)" o1 pp_static_call o2)) m.minstances
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    (Utils.fprintf_list ~sep:"@ " pp_instr) m.minit
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    (Utils.fprintf_list ~sep:"@ " pp_instr) m.mconst
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    pp_step m.mstep
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    (fun fmt -> match m.mspec with | None -> () | Some spec -> Printers.pp_spec fmt spec)
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    (Utils.fprintf_list ~sep:"@ " Printers.pp_expr_annot) m.mannot
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let rec is_const_value v =
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  match v.value_desc with
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  | Cst _          -> true
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  | Fun (id, args) -> Basic_library.is_value_internal_fun v && List.for_all is_const_value args
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  | _              -> false
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(* Returns the declared stateless status and the computed one. *)
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let get_stateless_status m =
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 (m.mname.node_dec_stateless, Utils.desome m.mname.node_stateless)
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let is_input m id =
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  List.exists (fun o -> o.var_id = id.var_id) m.mstep.step_inputs
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let is_output m id =
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  List.exists (fun o -> o.var_id = id.var_id) m.mstep.step_outputs
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let is_memory m id =
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  List.exists (fun o -> o.var_id = id.var_id) m.mmemory
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let conditional c t e =
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  MBranch(c, [ (tag_true, t); (tag_false, e) ])
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let dummy_var_decl name typ =
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  {
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    var_id = name;
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    var_orig = false;
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    var_dec_type = dummy_type_dec;
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    var_dec_clock = dummy_clock_dec;
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    var_dec_const = false;
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    var_dec_value = None;
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    var_type =  typ;
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    var_clock = Clocks.new_ck Clocks.Cvar true;
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    var_loc = Location.dummy_loc
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  }
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let arrow_id = "_arrow"
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let arrow_typ = Types.new_ty Types.Tunivar
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let arrow_desc =
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  {
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    node_id = arrow_id;
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    node_type = Type_predef.type_bin_poly_op;
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    node_clock = Clock_predef.ck_bin_univ;
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    node_inputs= [dummy_var_decl "_in1" arrow_typ; dummy_var_decl "_in2" arrow_typ];
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    node_outputs= [dummy_var_decl "_out" arrow_typ];
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    node_locals= [];
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    node_gencalls = [];
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    node_checks = [];
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    node_asserts = [];
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    node_stmts= [];
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    node_dec_stateless = false;
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    node_stateless = Some false;
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    node_spec = None;
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    node_annot = [];  }
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(*let arrow_top_decl =
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  {
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    top_decl_desc = Node arrow_desc;
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    top_decl_owner = Version.include_path;
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    top_decl_itf = false;
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    top_decl_loc = Location.dummy_loc
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  }*)
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let arrow_top_decl =
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  {
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    top_decl_desc = Node arrow_desc;
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    top_decl_owner = !Options.include_dir;
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    top_decl_itf = false;
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    top_decl_loc = Location.dummy_loc
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  }
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let mk_val v t = { value_desc = v; 
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		   value_type = t; 
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		   value_annot = None }
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let arrow_machine =
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  let state = "_first" in
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  let var_state = dummy_var_decl state (Types.new_ty Types.Tbool) in
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  let var_input1 = List.nth arrow_desc.node_inputs 0 in
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  let var_input2 = List.nth arrow_desc.node_inputs 1 in
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  let var_output = List.nth arrow_desc.node_outputs 0 in
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  let cst b = mk_val (Cst (const_of_bool b)) Type_predef.type_bool in
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  let t_arg = Types.new_univar () in (* TODO Xavier: c'est bien la bonne def ? *)
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  {
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    mname = arrow_desc;
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    mmemory = [var_state];
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    mcalls = [];
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    minstances = [];
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    minit = [MStateAssign(var_state, cst true)];
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    mstatic = [];
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    mconst = [];
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    mstep = {
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      step_inputs = arrow_desc.node_inputs;
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      step_outputs = arrow_desc.node_outputs;
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      step_locals = [];
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      step_checks = [];
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      step_instrs = [conditional (mk_val (StateVar var_state) Type_predef.type_bool)
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			         [MStateAssign(var_state, cst false);
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                                  MLocalAssign(var_output, mk_val (LocalVar var_input1) t_arg)]
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                                 [MLocalAssign(var_output, mk_val (LocalVar var_input2) t_arg)] ];
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      step_asserts = [];
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    };
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    mspec = None;
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    mannot = [];
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  }
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let empty_desc =
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  {
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    node_id = arrow_id;
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    node_type = Types.bottom;
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    node_clock = Clocks.bottom;
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    node_inputs= [];
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    node_outputs= [];
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    node_locals= [];
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    node_gencalls = [];
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    node_checks = [];
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    node_asserts = [];
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    node_stmts= [];
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    node_dec_stateless = true;
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    node_stateless = Some true;
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    node_spec = None;
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    node_annot = [];  }
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let empty_machine =
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  {
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    mname = empty_desc;
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    mmemory = [];
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    mcalls = [];
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    minstances = [];
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    minit = [];
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    mstatic = [];
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    mconst = [];
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    mstep = {
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      step_inputs = [];
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      step_outputs = [];
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      step_locals = [];
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      step_checks = [];
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      step_instrs = [];
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      step_asserts = [];
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    };
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    mspec = None;
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    mannot = [];
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  }
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let new_instance =
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  let cpt = ref (-1) in
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  fun caller callee tag ->
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    begin
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      let o =
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	if Stateless.check_node callee then
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	  node_name callee
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	else
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	  Printf.sprintf "ni_%d" (incr cpt; !cpt) in
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      let o =
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	if !Options.ansi && is_generic_node callee
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	then Printf.sprintf "%s_inst_%d" o (Utils.position (fun e -> e.expr_tag = tag) caller.node_gencalls)
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	else o in
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      o
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    end
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(* translate_<foo> : node -> context -> <foo> -> machine code/expression *)
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(* the context contains  m : state aka memory variables  *)
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(*                      si : initialization instructions *)
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(*                       j : node aka machine instances  *)
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(*                       d : local variables             *)
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(*                       s : step instructions           *)
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let translate_ident node (m, si, j, d, s) id =
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  try (* id is a node var *)
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    let var_id = get_node_var id node in
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    if ISet.exists (fun v -> v.var_id = id) m
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    then mk_val (StateVar var_id) var_id.var_type
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    else mk_val (LocalVar var_id) var_id.var_type
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  with Not_found ->
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    try (* id is a constant *)
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      let vdecl = (Corelang.var_decl_of_const (const_of_top (Hashtbl.find Corelang.consts_table id))) in
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      mk_val (LocalVar vdecl) vdecl.var_type
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    with Not_found ->
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      (* id is a tag *)
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      (* DONE construire une liste des enum declar├ęs et alors chercher dedans la liste
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	 qui contient id *)
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      try
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        let typ = (typedef_of_top (Hashtbl.find Corelang.tag_table id)).tydef_id in
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        mk_val (Cst (Const_tag id)) (Type_predef.type_const typ)
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      with Not_found -> (Format.eprintf "internal error: Machine_code.translate_ident %s" id;
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                         assert false)
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let rec control_on_clock node ((m, si, j, d, s) as args) ck inst =
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 match (Clocks.repr ck).cdesc with
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 | Con    (ck1, cr, l) ->
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   let id  = Clocks.const_of_carrier cr in
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   control_on_clock node args ck1 (MBranch (translate_ident node args id,
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					    [l, [inst]] ))
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 | _                   -> inst
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305
let rec join_branches hl1 hl2 =
306
 match hl1, hl2 with
307
 | []          , _            -> hl2
308
 | _           , []           -> hl1
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 | (t1, h1)::q1, (t2, h2)::q2 ->
310
   if t1 < t2 then (t1, h1) :: join_branches q1 hl2 else
311
   if t1 > t2 then (t2, h2) :: join_branches hl1 q2
312
   else (t1, List.fold_right join_guards h1 h2) :: join_branches q1 q2
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314
and join_guards inst1 insts2 =
315
 match inst1, insts2 with
316
 | _                   , []                               ->
317
   [inst1]
318
 | MBranch (x1, hl1), MBranch (x2, hl2) :: q when x1 = x2 ->
319
   MBranch (x1, join_branches (sort_handlers hl1) (sort_handlers hl2))
320
   :: q
321
 | _ -> inst1 :: insts2
322

    
323
let join_guards_list insts =
324
 List.fold_right join_guards insts []
325

    
326
(* specialize predefined (polymorphic) operators
327
   wrt their instances, so that the C semantics
328
   is preserved *)
329
let specialize_to_c expr =
330
 match expr.expr_desc with
331
 | Expr_appl (id, e, r) ->
332
   if List.exists (fun e -> Types.is_bool_type e.expr_type) (expr_list_of_expr e)
333
   then let id =
334
	  match id with
335
	  | "="  -> "equi"
336
	  | "!=" -> "xor"
337
	  | _    -> id in
338
	{ expr with expr_desc = Expr_appl (id, e, r) }
339
   else expr
340
 | _ -> expr
341

    
342
let specialize_op expr =
343
  match !Options.output with
344
  | "C" -> specialize_to_c expr
345
  | _   -> expr
346

    
347
let rec translate_expr node ((m, si, j, d, s) as args) expr =
348
  let expr = specialize_op expr in
349
  let value_desc = 
350
    match expr.expr_desc with
351
    | Expr_const v                     -> Cst v
352
    | Expr_ident x                     -> (translate_ident node args x).value_desc
353
    | Expr_array el                    -> Array (List.map (translate_expr node args) el)
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    | Expr_access (t, i)               -> Access (translate_expr node args t, translate_expr node args (expr_of_dimension i))
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    | Expr_power  (e, n)               -> Power  (translate_expr node args e, translate_expr node args (expr_of_dimension n))
356
    | Expr_tuple _
357
    | Expr_arrow _ 
358
    | Expr_fby _
359
    | Expr_pre _                       -> (Printers.pp_expr Format.err_formatter expr; Format.pp_print_flush Format.err_formatter (); raise NormalizationError)
360
    | Expr_when    (e1, _, _)          -> (translate_expr node args e1).value_desc
361
    | Expr_merge   (x, _)              -> raise NormalizationError
362
    | Expr_appl (id, e, _) when Basic_library.is_expr_internal_fun expr ->
363
      let nd = node_from_name id in
364
      Fun (node_name nd, List.map (translate_expr node args) (expr_list_of_expr e))
365
    (*| Expr_ite (g,t,e) -> (
366
      (* special treatment depending on the active backend. For horn backend, ite
367
	 are preserved in expression. While they are removed for C or Java
368
	 backends. *)
369
      match !Options.output with | "horn" -> 
370
	Fun ("ite", [translate_expr node args g; translate_expr node args t; translate_expr node args e])
371
      | "C" | "java" | _ -> 
372
	(Printers.pp_expr Format.err_formatter expr; Format.pp_print_flush Format.err_formatter (); raise NormalizationError)
373
    )*)
374
    | _                   -> raise NormalizationError
375
  in
376
  mk_val value_desc expr.expr_type
377

    
378
let translate_guard node args expr =
379
  match expr.expr_desc with
380
  | Expr_ident x  -> translate_ident node args x
381
  | _ -> (Format.eprintf "internal error: translate_guard %s %a@." node.node_id Printers.pp_expr expr;assert false)
382

    
383
let rec translate_act node ((m, si, j, d, s) as args) (y, expr) =
384
  match expr.expr_desc with
385
  | Expr_ite   (c, t, e) -> let g = translate_guard node args c in
386
			    conditional g
387
                              [translate_act node args (y, t)]
388
                              [translate_act node args (y, e)]
389
  | Expr_merge (x, hl)   -> MBranch (translate_ident node args x,
390
                                     List.map (fun (t,  h) -> t, [translate_act node args (y, h)]) hl)
391
  | _                    -> MLocalAssign (y, translate_expr node args expr)
392

    
393
let reset_instance node args i r c =
394
  match r with
395
  | None        -> []
396
  | Some r      -> let g = translate_guard node args r in
397
                   [control_on_clock node args c (conditional g [MReset i] [MNoReset i])]
398

    
399
let translate_eq node ((m, si, j, d, s) as args) eq =
400
  (* Format.eprintf "translate_eq %a with clock %a@." Printers.pp_node_eq eq Clocks.print_ck eq.eq_rhs.expr_clock; *)
401
  match eq.eq_lhs, eq.eq_rhs.expr_desc with
402
  | [x], Expr_arrow (e1, e2)                     ->
403
    let var_x = get_node_var x node in
404
    let o = new_instance node arrow_top_decl eq.eq_rhs.expr_tag in
405
    let c1 = translate_expr node args e1 in
406
    let c2 = translate_expr node args e2 in
407
    (m,
408
     MReset o :: si,
409
     Utils.IMap.add o (arrow_top_decl, []) j,
410
     d,
411
     (control_on_clock node args eq.eq_rhs.expr_clock (MStep ([var_x], o, [c1;c2]))) :: s)
412
  | [x], Expr_pre e1 when ISet.mem (get_node_var x node) d     ->
413
    let var_x = get_node_var x node in
414
    (ISet.add var_x m,
415
     si,
416
     j,
417
     d,
418
     control_on_clock node args eq.eq_rhs.expr_clock (MStateAssign (var_x, translate_expr node args e1)) :: s)
419
  | [x], Expr_fby (e1, e2) when ISet.mem (get_node_var x node) d ->
420
    let var_x = get_node_var x node in
421
    (ISet.add var_x m,
422
     MStateAssign (var_x, translate_expr node args e1) :: si,
423
     j,
424
     d,
425
     control_on_clock node args eq.eq_rhs.expr_clock (MStateAssign (var_x, translate_expr node args e2)) :: s)
426

    
427
  | p  , Expr_appl (f, arg, r) when not (Basic_library.is_expr_internal_fun eq.eq_rhs) ->
428
    let var_p = List.map (fun v -> get_node_var v node) p in
429
    let el = expr_list_of_expr arg in
430
    let vl = List.map (translate_expr node args) el in
431
    let node_f = node_from_name f in
432
    let call_f =
433
      node_f,
434
      NodeDep.filter_static_inputs (node_inputs node_f) el in
435
    let o = new_instance node node_f eq.eq_rhs.expr_tag in
436
    let env_cks = List.fold_right (fun arg cks -> arg.expr_clock :: cks) el [eq.eq_rhs.expr_clock] in
437
    let call_ck = Clock_calculus.compute_root_clock (Clock_predef.ck_tuple env_cks) in
438
    (*Clocks.new_var true in
439
    Clock_calculus.unify_imported_clock (Some call_ck) eq.eq_rhs.expr_clock eq.eq_rhs.expr_loc;
440
    Format.eprintf "call %a: %a: %a@," Printers.pp_expr eq.eq_rhs Clocks.print_ck (Clock_predef.ck_tuple env_cks) Clocks.print_ck call_ck;*)
441
    (m,
442
     (if Stateless.check_node node_f then si else MReset o :: si),
443
     Utils.IMap.add o call_f j,
444
     d,
445
     (if Stateless.check_node node_f
446
      then []
447
      else reset_instance node args o r call_ck) @
448
       (control_on_clock node args call_ck (MStep (var_p, o, vl))) :: s)
449
(*
450
   (* special treatment depending on the active backend. For horn backend, x = ite (g,t,e)
451
      are preserved. While they are replaced as if g then x = t else x = e in  C or Java
452
      backends. *)
453
  | [x], Expr_ite   (c, t, e)
454
    when (match !Options.output with | "horn" -> true | "C" | "java" | _ -> false)
455
      ->
456
    let var_x = get_node_var x node in
457
    (m,
458
     si,
459
     j,
460
     d,
461
     (control_on_clock node args eq.eq_rhs.expr_clock
462
	(MLocalAssign (var_x, translate_expr node args eq.eq_rhs))::s)
463
    )
464

    
465
*)
466
  | [x], _                                       -> (
467
    let var_x = get_node_var x node in
468
    (m, si, j, d,
469
     control_on_clock
470
       node
471
       args
472
       eq.eq_rhs.expr_clock
473
       (translate_act node args (var_x, eq.eq_rhs)) :: s
474
    )
475
  )
476
  | _                                            ->
477
    begin
478
      Format.eprintf "internal error: Machine_code.translate_eq %a@?" Printers.pp_node_eq eq;
479
      assert false
480
    end
481

    
482
let find_eq xl eqs =
483
  let rec aux accu eqs =
484
      match eqs with
485
	| [] ->
486
	  begin
487
	    Format.eprintf "Looking for variables %a in the following equations@.%a@."
488
	      (Utils.fprintf_list ~sep:" , " (fun fmt v -> Format.fprintf fmt "%s" v)) xl
489
	      Printers.pp_node_eqs eqs;
490
	    assert false
491
	  end
492
	| hd::tl ->
493
	  if List.exists (fun x -> List.mem x hd.eq_lhs) xl then hd, accu@tl else aux (hd::accu) tl
494
    in
495
    aux [] eqs
496

    
497
(* Sort the set of equations of node [nd] according
498
   to the computed schedule [sch]
499
*)
500
let sort_equations_from_schedule nd sch =
501
  (* Format.eprintf "%s schedule: %a@." *)
502
  (* 		 nd.node_id *)
503
  (* 		 (Utils.fprintf_list ~sep:" ; " Scheduling.pp_eq_schedule) sch; *)
504
  let split_eqs = Splitting.tuple_split_eq_list (get_node_eqs nd) in
505
  let eqs_rev, remainder =
506
    List.fold_left
507
      (fun (accu, node_eqs_remainder) vl ->
508
       if List.exists (fun eq -> List.exists (fun v -> List.mem v eq.eq_lhs) vl) accu
509
       then
510
	 (accu, node_eqs_remainder)
511
       else
512
	 let eq_v, remainder = find_eq vl node_eqs_remainder in
513
	 eq_v::accu, remainder
514
      )
515
      ([], split_eqs)
516
      sch
517
  in
518
  begin
519
    if List.length remainder > 0 then (
520
      Format.eprintf "Equations not used are@.%a@.Full equation set is:@.%a@.@?"
521
		     Printers.pp_node_eqs remainder
522
      		     Printers.pp_node_eqs (get_node_eqs nd);
523
      assert false);
524
    List.rev eqs_rev
525
  end
526

    
527
let constant_equations nd =
528
 List.fold_right (fun vdecl eqs ->
529
   if vdecl.var_dec_const
530
   then
531
     { eq_lhs = [vdecl.var_id];
532
       eq_rhs = Utils.desome vdecl.var_dec_value;
533
       eq_loc = vdecl.var_loc
534
     } :: eqs
535
   else eqs)
536
   nd.node_locals []
537

    
538
let translate_eqs node args eqs =
539
  List.fold_right (fun eq args -> translate_eq node args eq) eqs args;;
540

    
541
let translate_decl nd sch =
542
  (*Log.report ~level:1 (fun fmt -> Printers.pp_node fmt nd);*)
543

    
544
  let sorted_eqs = sort_equations_from_schedule nd sch in
545
  let constant_eqs = constant_equations nd in
546
  
547
  let init_args = ISet.empty, [], Utils.IMap.empty, List.fold_right (fun l -> ISet.add l) nd.node_locals ISet.empty, [] in
548
  (* memories, init instructions, node calls, local variables (including memories), step instrs *)
549
  let m0, init0, j0, locals0, s0 = translate_eqs nd init_args constant_eqs in
550
  assert (ISet.is_empty m0);
551
  assert (init0 = []);
552
  assert (Utils.IMap.is_empty j0);
553
  let m, init, j, locals, s = translate_eqs nd (m0, init0, j0, locals0, []) sorted_eqs in
554
  let mmap = Utils.IMap.fold (fun i n res -> (i, n)::res) j [] in
555
  {
556
    mname = nd;
557
    mmemory = ISet.elements m;
558
    mcalls = mmap;
559
    minstances = List.filter (fun (_, (n,_)) -> not (Stateless.check_node n)) mmap;
560
    minit = init;
561
    mconst = s0;
562
    mstatic = List.filter (fun v -> v.var_dec_const) nd.node_inputs;
563
    mstep = {
564
      step_inputs = nd.node_inputs;
565
      step_outputs = nd.node_outputs;
566
      step_locals = ISet.elements (ISet.diff locals m);
567
      step_checks = List.map (fun d -> d.Dimension.dim_loc, translate_expr nd init_args (expr_of_dimension d)) nd.node_checks;
568
      step_instrs = (
569
	(* special treatment depending on the active backend. For horn backend,
570
	   common branches are not merged while they are in C or Java
571
	   backends. *)
572
	(*match !Options.output with
573
	| "horn" -> s
574
	| "C" | "java" | _ ->*) join_guards_list s
575
      );
576
      step_asserts =
577
	let exprl = List.map (fun assert_ -> assert_.assert_expr ) nd.node_asserts in
578
	List.map (translate_expr nd init_args) exprl
579
	;
580
    };
581
    mspec = nd.node_spec;
582
    mannot = nd.node_annot;
583
  }
584

    
585
(** takes the global declarations and the scheduling associated to each node *)
586
let translate_prog decls node_schs =
587
  let nodes = get_nodes decls in
588
  List.map
589
    (fun decl ->
590
     let node = node_of_top decl in
591
      let sch = (Utils.IMap.find node.node_id node_schs).Scheduling.schedule in
592
      translate_decl node sch
593
    ) nodes
594

    
595
let get_machine_opt name machines =
596
  List.fold_left
597
    (fun res m ->
598
      match res with
599
      | Some _ -> res
600
      | None -> if m.mname.node_id = name then Some m else None)
601
    None machines
602

    
603
let get_const_assign m id =
604
  try
605
    match (List.find (fun instr -> match instr with MLocalAssign (v, _) -> v == id | _ -> false) m.mconst) with
606
    | MLocalAssign (_, e) -> e
607
    | _                   -> assert false
608
  with Not_found -> assert false
609

    
610

    
611
let value_of_ident loc m id =
612
  (* is is a state var *)
613
  try
614
    let v = List.find (fun v -> v.var_id = id) m.mmemory
615
    in mk_val (StateVar v) v.var_type 
616
  with Not_found ->
617
    try (* id is a node var *)
618
      let v = get_node_var id m.mname
619
      in mk_val (LocalVar v) v.var_type
620
  with Not_found ->
621
    try (* id is a constant *)
622
      let c = Corelang.var_decl_of_const (const_of_top (Hashtbl.find Corelang.consts_table id))
623
      in mk_val (LocalVar c) c.var_type
624
    with Not_found ->
625
      (* id is a tag *)
626
      let t = Const_tag id
627
      in mk_val (Cst t) (Typing.type_const loc t)
628

    
629
(* type of internal fun used in dimension expression *)
630
let type_of_value_appl f args =
631
  if List.mem f Basic_library.arith_funs
632
  then (List.hd args).value_type
633
  else Type_predef.type_bool
634

    
635
let rec value_of_dimension m dim =
636
  match dim.Dimension.dim_desc with
637
  | Dimension.Dbool b         ->
638
     mk_val (Cst (Const_tag (if b then Corelang.tag_true else Corelang.tag_false))) Type_predef.type_bool
639
  | Dimension.Dint i          ->
640
     mk_val (Cst (Const_int i)) Type_predef.type_int
641
  | Dimension.Dident v        -> value_of_ident dim.Dimension.dim_loc m v
642
  | Dimension.Dappl (f, args) ->
643
     let vargs = List.map (value_of_dimension m) args
644
     in mk_val (Fun (f, vargs)) (type_of_value_appl f vargs) 
645
  | Dimension.Dite (i, t, e)  ->
646
     (match List.map (value_of_dimension m) [i; t; e] with
647
     | [vi; vt; ve] -> mk_val (Fun ("ite", [vi; vt; ve])) vt.value_type
648
     | _            -> assert false)
649
  | Dimension.Dlink dim'      -> value_of_dimension m dim'
650
  | _                         -> assert false
651

    
652
let rec dimension_of_value value =
653
  match value.value_desc with
654
  | Cst (Const_tag t) when t = Corelang.tag_true  -> Dimension.mkdim_bool  Location.dummy_loc true
655
  | Cst (Const_tag t) when t = Corelang.tag_false -> Dimension.mkdim_bool  Location.dummy_loc false
656
  | Cst (Const_int i)                             -> Dimension.mkdim_int   Location.dummy_loc i
657
  | LocalVar v                                    -> Dimension.mkdim_ident Location.dummy_loc v.var_id
658
  | Fun (f, args)                                 -> Dimension.mkdim_appl  Location.dummy_loc f (List.map dimension_of_value args)
659
  | _                                             -> assert false
660

    
661
(* Local Variables: *)
662
(* compile-command:"make -C .." *)
663
(* End: *)