licDump.ml

(* Time-stamp: <modified the 13/12/2012 (at 11:32) by Erwan Jahier> *)

open Errors
open Printf
open Lxm
open Lic
open List

(* XXX changer le nom de cette fonction *)
let (dump_long : Ident.long -> string) = fun x -> 
  if !Global.no_prefix then
    Ident.no_pack_string_of_long x
  else 
    Ident.string_of_long x
(*   fun id ->  *)
(*     let str = Ident.string_of_long id in *)
(*       Str.global_replace (Str.regexp "::") "__" str *)

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


(******************************************************************************)    
let  (get_rank : 'a -> 'a list -> int) =
  fun x l -> 
    let rec aux i l =
      match l with
        | [] -> assert false
        | y::l -> if x = y then i else aux (i+1) l
    in
      aux 1 l
let _ = assert (get_rank 5 [1;3;5] = 3)


(* check it is a non-singleton tuple *)
let rec is_a_tuple (e:Lic.val_exp) : bool =
   match e.ve_core with
    | CallByPosLic ({ it = TUPLE }, OperLic [ve]) -> is_a_tuple ve
    | CallByPosLic ({ it = TUPLE }, OperLic vel) -> List.length vel > 1
    | _ -> false

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

let rec string_of_const_eff =
  function
    | Bool_const_eff true -> "true"
    | Bool_const_eff false -> "false"
    | Int_const_eff i -> (sprintf "%d" i)
    | Real_const_eff r -> r
    | Extern_const_eff (s,t) -> (dump_long s)
    | Abstract_const_eff (s,t,v,_) -> 
        (dump_long s) ^ (* XXX ? *)
        (string_of_const_eff v)
        (*     | Abstract_const_eff (s,t,v,false) -> (dump_long s)  *)
    | Enum_const_eff   (s,t) -> 
        if !Global.expand_enums then
          match t with
            | Enum_type_eff(n,l) ->  "" (* translated into an extern type *)
            | _ -> assert false
        else 
          (dump_long s)
    | Struct_const_eff (fl, t) -> (
        let string_of_field = 
          function (id, veff) -> 
            (Ident.to_string id)^" = "^ (string_of_const_eff veff) 
        in
        let flst = List.map string_of_field fl in
          (string_of_type_eff t)^"{"^(String.concat "; " flst)^"}"
      )
    | Array_const_eff (ctab, t) -> (
        let vl = List.map string_of_const_eff ctab in
          "["^(String.concat ", " vl)^"]"
      )
    | Tuple_const_eff   cl ->  (
        string_of_const_eff_list cl
    )

and string_of_const_eff_list =
        function
        | [c] -> string_of_const_eff c
        | cl -> "(" ^ (String.concat ", " (List.map string_of_const_eff cl)) ^ ")"

(* modify numbers notations in such a way that they
   become "valid" identifiers. Policy:
        - minus (-) becomes "m"
        - plus (+) becomes "p"
        - dot (d) becomes "d"
*)
and correct_num_string s = 
        let res = String.copy s in
        let cpt = ref 0 in
        let f c = (
                let _ = match c with
                | '-' -> (res.[!cpt] <- 'm')
                | '+' -> (res.[!cpt] <- 'p')
                | '.' -> (res.[!cpt] <- 'd')
                | _ -> ()
                in incr cpt
        ) in
        String.iter f s;
        res

and string_ident_of_const_eff c = 
  (* that version generates a string that is a valid lic ident, in order to use it
     to generate a node name using static parameters *)
  match c with
    | Int_const_eff _
    | Real_const_eff _ ->
         correct_num_string(string_of_const_eff c)
    | Bool_const_eff _
    | Extern_const_eff _
    | Abstract_const_eff _
    | Enum_const_eff _  -> string_of_const_eff c
    | Struct_const_eff (_, t) -> (
        match t with 
          | Struct_type_eff (sn,_) -> Ident.no_pack_string_of_long sn
          | _ -> assert false
      )
    | Array_const_eff (ctab, t) -> string_of_type_eff t
    | Tuple_const_eff cl ->  string_of_const_eff_list cl

and string_ident_of_const_eff_list cl =
        match cl with
        | [c] -> string_ident_of_const_eff c
        | _ -> "(" ^ (String.concat ", " (List.map string_ident_of_const_eff cl)) ^ ")"

and string_of_const_eff_opt = function
  | None -> ""
  | Some val_exp_eff -> string_of_const_eff val_exp_eff

and string_def_of_type_eff = function
  | Bool_type_eff -> "bool"
  | Int_type_eff  -> "int"
  | Real_type_eff -> "real"
  | External_type_eff (i) -> dump_long i
  | Abstract_type_eff (i, t) -> string_def_of_type_eff t ^ " (*abstract in the source*)"
  | Enum_type_eff (i, sl) ->
      assert (sl <>[]);
      if !Global.expand_enums then 
        ""  (* translated into an extern type *)
      else
        let f sep acc s  = acc ^ sep ^ (dump_long s) in
          (List.fold_left (f ", ")  (f "" "enum {" (List.hd sl)) (List.tl sl)) ^ "}"
  | Array_type_eff (ty, sz) -> sprintf "%s^%d" (string_of_type_eff ty) sz
  | Struct_type_eff (name, fl) -> 
      assert (fl <>[]);
      let f sep acc (id, (type_eff, const_eff_opt))  = 
        acc ^ sep ^ (Ident.to_string id) ^ " : " ^
          (string_of_type_eff type_eff) ^
          match const_eff_opt with
              None -> ""
            | Some ce -> " = " ^ (string_of_const_eff ce)
      in
        "struct " ^
          (List.fold_left (f "; ")  (f "" " {" (List.hd fl)) (List.tl fl)) ^ "}"
          
  | TypeVar Any -> "a"
  | TypeVar AnyNum -> "o"


(* exported *)

(* On prend le meme que Lic *)
and string_of_type_eff = Lic.string_of_type

(* for printing recursive node *)
and string_of_node_key_rec (nkey: node_key) = 
  match nkey with
    | (ik, []) -> dump_long ik
    | (ik, salst) ->
        let astrings = List.map static_arg2string_bis salst in
        let name = sprintf "%s_%s" (Ident.no_pack_string_of_long ik) (String.concat "_" astrings) in
          (LicName.node_key nkey name)

(* for printing iterators *)
and string_of_node_key_iter (nkey: node_key) = 
  match nkey with
    | (ik, []) -> dump_long ik
    | (ik, salst) ->
        let astrings = List.map (static_arg2string) salst in
          sprintf "%s<<%s>>" (Ident.string_of_long ik) (String.concat ", " astrings)

(* pour ecrire UN NIVEAU d'arg statique (cf. LicMetaOp *)
and string_of_node_key_def (nkey: node_key) = 
  match nkey with
    | (ik, []) -> dump_long ik
    | (ik, salst) ->
        let astrings = List.map (string_of_static_arg) salst in
          sprintf "%s<<%s>>" (Ident.string_of_long ik) (String.concat ", " astrings)
and string_of_static_arg (sa : Lic.static_arg) =
  match sa with
    | ConstStaticArgLic (id, ceff) -> sprintf "%s" (string_ident_of_const_eff ceff)
    | TypeStaticArgLic  (id, teff) -> sprintf "%s" (string_of_type_eff teff)
    | NodeStaticArgLic  (id, nk) -> string_of_node_key_rec nk



(* for inventing a name to parametrized nodes *)
and static_arg2string_bis (sa : Lic.static_arg) =
  match sa with
    | ConstStaticArgLic (id, ceff) -> sprintf "%s" (string_ident_of_const_eff ceff)
    | TypeStaticArgLic  (id, teff) -> sprintf "%s" (string_of_type_eff teff)
    (* | NodeStaticArgLic  (id, ((long, _sargs), _, _), _) -> *)
    | NodeStaticArgLic  (id, (long,_)) ->
        sprintf "%s" (Ident.no_pack_string_of_long long)

(* for printing recursive node and iterators *)
and static_arg2string (sa : Lic.static_arg) =
  match sa with
    | ConstStaticArgLic (id, ceff) -> sprintf "%s" (string_ident_of_const_eff ceff)
    | TypeStaticArgLic  (id, teff) -> sprintf "%s" (string_of_type_eff teff)
    (* | NodeStaticArgLic  (id, ((long,sargs), _, _), _) -> *)
    | NodeStaticArgLic  (id, (long,sargs)) ->
        string_of_node_key_iter (long,sargs)
(*      sprintf "%s" (dump_long long) *)

and static_arg2string_rec (sa : Lic.static_arg) =
  match sa with
    | ConstStaticArgLic (id, ceff) -> sprintf "%s" (string_ident_of_const_eff ceff)
    | TypeStaticArgLic  (id, teff) -> sprintf "%s" (string_of_type_eff teff)
    (* | NodeStaticArgLic  (id, ((long,sargs), _, _), _) -> *)
    | NodeStaticArgLic  (id, (long,sargs)) ->
        string_of_node_key_rec (long,sargs)
(*      sprintf "%s" (dump_long long) *)


and (string_of_var_info_eff: Lic.var_info -> string) =
  fun x -> 
    (Ident.to_string x.var_name_eff) ^ ":"^(string_of_type_eff x.var_type_eff)

and (type_string_of_var_info_eff: Lic.var_info -> string) =
  fun x -> (string_of_type_eff x.var_type_eff) ^ 
    (string_of_clock2 (snd x.var_clock_eff))

and string_of_decl var_info_eff = 
  let vt_str = 
    (Ident.to_string var_info_eff.var_name_eff) ^ ":" ^ 
      (string_of_type_eff var_info_eff.var_type_eff) 
  in  
  let clk_str = (string_of_clock (snd var_info_eff.var_clock_eff)) in
  let vt_str = 
    if !Global.ec && 
      (match (snd var_info_eff.var_clock_eff) with 
           BaseLic | ClockVar _ ->  false 
         | _ -> true)
    then "(" ^ vt_str ^ ")" 
    else vt_str 
  in
    vt_str ^ clk_str

and (string_of_type_decl_list : Lic.var_info list -> string -> string) =
  fun tel sep -> 
    let str = String.concat sep (List.map string_of_decl tel) in
      str

and string_of_slice_info_eff si_eff =
  "[" ^ (string_of_int si_eff.se_first) ^ " .. " ^ (string_of_int si_eff.se_last) ^
    (if si_eff.se_step = 1 then "" else " step " ^ (string_of_int si_eff.se_step)) ^
    "]"

and (string_of_leff : Lic.left -> string) =
  function
    | LeftVarLic  (vi_eff,_) -> Ident.to_string vi_eff.var_name_eff  
    | LeftFieldLic(leff,id,_) -> (string_of_leff leff) ^ "." ^ (Ident.to_string id)
    | LeftArrayLic(leff,i,_)  -> (string_of_leff leff) ^ "[" ^ (string_of_int i) ^ "]"
    | LeftSliceLic(leff,si,_) -> (string_of_leff leff) ^ (string_of_slice_info_eff si)

and (string_of_leff_list : Lic.left list -> string) =
  fun l -> 
    (if List.length l = 1 then "" else "(") ^ 
      (String.concat ", " (List.map string_of_leff l)) ^ 
      (if List.length l = 1 then "" else ")") 

and sov ve = string_of_val_exp_eff ve
and (string_of_by_pos_op_eff: Lic.by_pos_op srcflagged -> Lic.val_exp list -> string) =
  fun posop vel -> 
    let tuple vel = (String.concat ", " (List.map string_of_val_exp_eff vel)) in
    let tuple_par vel = "(" ^ (tuple vel) ^ ")" in
    let tuple_square vel = 
      "[" ^ (String.concat ", " (List.map string_of_val_exp_eff vel)) ^ "]"
    in
    let str = 
      match posop.it,vel with
        | PREDEF_CALL (AstPredef.NOT_n,_), [ve1] ->
            ((op2string AstPredef.NOT_n) ^ " " ^ 
               (if is_a_tuple ve1 then (tuple_par [ve1]) else sov ve1))
              
        | PREDEF_CALL (AstPredef.DIESE_n,_), [ve1] ->
            if !Global.lv4 
            then sov ve1 (* lv4 does no accept to apply # on One var only! *)
            else ((op2string AstPredef.DIESE_n) ^ (tuple_par [ve1]))
              
        | PREDEF_CALL (AstPredef.IF_n,_), [ve1; ve2; ve3] ->
            let ve2str = string_of_val_exp_eff ve2 in 
            let ve2str = if is_a_tuple ve2 then "("^ve2str^")" else ve2str in
            let ve3str = string_of_val_exp_eff ve3 in 
            let ve3str = if is_a_tuple ve3 then "("^ve3str^")" else ve3str in
              " if " ^ (string_of_val_exp_eff ve1) ^ 
                " then " ^ ve2str ^ " else " ^ ve3str

        | PREDEF_CALL(op,sargs), vel -> 
            if AstPredef.is_infix op then (
              match vel with 
                | [ve1; ve2] -> 
                    (string_of_val_exp_eff ve1) ^ " " ^ (op2string op) ^ 
                      " " ^ (string_of_val_exp_eff ve2)
                | _ -> assert false
            ) 
            else 
              ((op2string op) ^
                 (if sargs = [] then 
                    match op with
                      | AstPredef.ICONST_n _ | AstPredef.RCONST_n _   | AstPredef.NOT_n
                      | AstPredef.UMINUS_n | AstPredef.IUMINUS_n | AstPredef.RUMINUS_n
                      | AstPredef.FALSE_n | AstPredef.TRUE_n -> 
                          tuple vel
                      | _ -> tuple_par vel 
                  else 
                    "<<" ^ 
                      (String.concat ", " (List.map (static_arg2string) sargs))
                    ^ ">>" ^ (tuple_par vel)))

        | (CALL nkl,_)  -> (
           let nk = nkl.it in
           if !Global.lv4 then
             (match nk with 
                  (* predef op that are iterated are translated into node_exp ;
                     hence, we need to do (again) a particular threatment to have
                     a node ouput (i.e., "2>a" vs "Lustre::lt(2,a)" *)
                | ("Lustre","uminus"),  [] -> " -" ^ sov (hd vel)
                | ("Lustre","iuminus"), [] -> " -" ^ sov (hd vel)
                | ("Lustre","ruminus"), [] -> " -" ^ sov (hd vel)
                | ("Lustre","not"), [] -> " not " ^ sov (hd vel)

                | ("Lustre","lt"),  [] -> sov (hd vel) ^ " < " ^ sov (hd (tl vel))
                | ("Lustre","lte"),  [] -> sov (hd vel) ^ " <= " ^ sov (hd (tl vel))
                | ("Lustre","gt"),  [] -> sov (hd vel) ^ " > " ^ sov (hd (tl vel))
                | ("Lustre","gte"),  [] -> sov (hd vel) ^ " >= " ^ sov (hd (tl vel))
                | ("Lustre","eq"),  [] -> sov (hd vel) ^ " = " ^ sov (hd (tl vel))
                | ("Lustre","neq"),  [] -> sov (hd vel) ^ " <> " ^ sov (hd (tl vel))
                | ("Lustre","diff"),  [] -> sov (hd vel) ^ " <> " ^ sov (hd (tl vel))
                | ("Lustre","plus"),  [] -> sov (hd vel) ^ " +  " ^ sov (hd (tl vel)) 
                | ("Lustre","iplus"),  [] -> sov (hd vel) ^ " +  " ^ sov (hd (tl vel)) 
                | ("Lustre","rplus"),  [] -> sov (hd vel) ^ " +  " ^ sov (hd (tl vel)) 
                | ("Lustre","minus"),  [] -> sov (hd vel) ^ " - " ^ sov (hd (tl vel)) 
                | ("Lustre","iminus"),  [] -> sov (hd vel) ^ " - " ^ sov (hd (tl vel)) 
                | ("Lustre","rminus"),  [] -> sov (hd vel) ^ " - " ^ sov (hd (tl vel)) 
                | ("Lustre","div"),  [] -> sov (hd vel) ^ " / " ^ sov (hd (tl vel)) 
                | ("Lustre","idiv"),  [] -> sov (hd vel) ^ " / " ^ sov (hd (tl vel)) 
                | ("Lustre","rdiv"),  [] -> sov (hd vel) ^ " / " ^ sov (hd (tl vel))
                | ("Lustre","times"),  [] -> sov (hd vel) ^ " * " ^ sov (hd (tl vel)) 
                | ("Lustre","rtimes"),  [] -> sov (hd vel) ^ " * " ^ sov (hd (tl vel)) 
                | ("Lustre","itimes"),  [] -> sov (hd vel) ^ " * " ^ sov (hd (tl vel)) 
                | ("Lustre","slash"),  [] -> sov (hd vel) ^ " / " ^ sov (hd (tl vel)) 
                | ("Lustre","rslash"),  [] -> sov (hd vel) ^ " / " ^ sov (hd (tl vel)) 
                | ("Lustre","islash"),  [] -> sov (hd vel) ^ " / " ^ sov (hd (tl vel)) 

                | ("Lustre","impl"),  [] -> sov (hd vel) ^ " => " ^ sov (hd (tl vel)) 
                | ("Lustre","mod"),  [] -> sov (hd vel) ^ " mod " ^ sov (hd (tl vel)) 

                | ("Lustre","and"),  [] -> sov (hd vel) ^ " and " ^ sov (hd (tl vel)) 
                | ("Lustre","or"),  [] -> sov (hd vel) ^ " or " ^ sov (hd (tl vel)) 
                | ("Lustre","xor"),  [] -> sov (hd vel) ^ " xor " ^ sov (hd (tl vel)) 

                | ("Lustre","if"),  [] ->  
                    " if " ^ sov (hd vel) ^ " then " ^ sov (hd (tl vel)) 
                    ^ " else " ^ sov (hd (tl (tl vel)))

                | _ -> 
                    ((string_of_node_key nk) ^ (tuple_par vel))
             ) else
              ((string_of_node_key_rec nk) ^ (tuple_par vel))
          )
        | CONST_REF idl, _ -> dump_long idl
        | VAR_REF id, _ -> id
        | PRE, _ -> "pre "  ^ (tuple_par vel)
        | ARROW, [ve1; ve2] -> 
            (if is_a_tuple ve1 then tuple_par [ve1] else string_of_val_exp_eff ve1) ^
              " -> " ^ 
              (if is_a_tuple ve1 then tuple_par [ve2] else string_of_val_exp_eff ve2)
        | FBY, [ve1; ve2] -> 
            if !Global.lv4 then
              (if is_a_tuple ve1 then tuple_par [ve1] else string_of_val_exp_eff ve1)
              ^ " -> pre " ^ 
                (if is_a_tuple ve1 then tuple_par [ve2] else string_of_val_exp_eff ve2)
            else
              (if is_a_tuple ve1 then tuple_par [ve1] else string_of_val_exp_eff ve1)
              ^ " fby " ^ 
                (if is_a_tuple ve1 then tuple_par [ve2] else string_of_val_exp_eff ve2)
        | WHEN clk, vel -> (tuple vel) ^ (string_of_clock_exp clk)

        | CURRENT,_ -> "current " ^ tuple_par vel 
        | TUPLE,_ -> (tuple vel)
        | WITH(ve),_ -> (string_of_val_exp_eff ve)
        | CONCAT, [ve1; ve2] ->  
            (string_of_val_exp_eff ve1) ^ " | " ^ (string_of_val_exp_eff ve2)
        | HAT (i, ve), _ -> (string_of_val_exp_eff ve) ^ "^" ^ (string_of_int i)
        | ARRAY vel, _ -> tuple_square vel
        | STRUCT_ACCESS(id), [ve1] ->
            (string_of_val_exp_eff ve1) ^ "." ^ (Ident.to_string id)

        | ARRAY_ACCES(i), [ve1] ->
            (string_of_val_exp_eff ve1) ^ "[" ^ (string_of_int i) ^ "]"

        | ARRAY_SLICE(si_eff), [ve1] -> 
            (string_of_val_exp_eff ve1) ^ (string_of_slice_info_eff si_eff)

        | ARRAY_SLICE(_), _ -> assert false (* todo *)
        | MERGE _, _ -> assert false (* todo *)
            (*  | ITERATOR _, _ -> assert false (* todo *) *)

        (* Cannot happen *)
        | ARROW, _ -> assert false
        | FBY, _ -> assert false
        | CONCAT, _ -> assert false
        | STRUCT_ACCESS(_), _ -> assert false
        | ARRAY_ACCES(i), _ -> assert false
    in
    let do_not_parenthesize = function 
      | VAR_REF _,_
      | CONST_REF _,_
      | PREDEF_CALL((AstPredef.ICONST_n _), _),_
      | PREDEF_CALL((AstPredef.RCONST_n _), _),_
      | PREDEF_CALL((AstPredef.FALSE_n), _),_
      | PREDEF_CALL((AstPredef.TRUE_n), _),_
      | ARRAY_ACCES _,_
      | STRUCT_ACCESS _,_ -> true   
      | _,_ ->  false 
    in 
      if 
        (* already parenthesized *)
        ( Str.string_match (Str.regexp "^(") str 0 && 
            Str.string_match (Str.regexp ")$") str 0 ) 
        || 
          (* ident or predef constants *)
          (do_not_parenthesize (posop.it,vel)) 
        ||
          !Global.one_op_per_equation
      then 
        str 
      else 
        ("(" ^ str ^ ")")


and string_of_val_exp_eff ve = string_of_val_exp_eff_core ve.ve_core
and string_of_val_exp_eff_core ve_core = 
  match ve_core with
    | CallByPosLic (by_pos_op_eff, OperLic vel) ->
      (* ICI : on pourrait afficher en commentaire l'éventuel type_matches ? *)
        (string_of_by_pos_op_eff by_pos_op_eff vel) 

    | CallByNameLic(by_name_op_eff, fl) -> 
        (match by_name_op_eff.it with
           | STRUCT (pn,idref) -> (
               match Ident.pack_of_idref idref with
                 | Some pn -> 
                     Ident.string_of_idref idref
                 | None -> 
                     let idref = Ident.make_idref pn (Ident.of_idref idref) in
                       Ident.string_of_idref idref
             )
           | STRUCT_anonymous -> "") ^
          "{" ^ (String.concat ";" 
                   (List.map 
                      (fun (id,veff) -> 
                         let str = string_of_val_exp_eff veff in 
                           (Ident.to_string id.it) ^ "=" ^ 
                             (if is_a_tuple veff then ("("^ str^")") else str)
                      )
                      fl)) ^
          "}"


and wrap_long_line str = 
  if String.length str < 75 then str else
    let str_list = Str.split (Str.regexp " ") str in
    let new_str, reste =
      List.fold_left
        (fun (accl, acc_str) str ->
           let new_acc_str = acc_str ^ " " ^ str in
             if 
               String.length new_acc_str > 75
             then
               (accl ^ acc_str ^ "\n\t" , str)
             else
               (accl, new_acc_str)
        )
        ("","")
        str_list
    in
      new_str ^ " " ^ reste


and string_of_eq_info_eff (leff_list, vee) =
  let str = string_of_val_exp_eff vee in
    wrap_long_line (
      (string_of_leff_list leff_list) ^ " = " ^ 
        (if is_a_tuple vee then ("("^ str^")") else str) ^ ";")

and (string_of_assert : Lic.val_exp srcflagged -> string ) =
  fun eq_eff -> 
    wrap_long_line (
      "assert(" ^ string_of_val_exp_eff eq_eff.it ^ ");")

and (string_of_eq : Lic.eq_info srcflagged -> string) =
  fun eq_eff ->
    string_of_eq_info_eff eq_eff.it



and wrap_long_profile str = 
  if String.length str < 75 then str else
    "\n"^(
      Str.global_replace (Str.regexp "returns") "\nreturns"
        (Str.global_replace (Str.regexp "(") "(\n\t"
           (Str.global_replace (Str.regexp "; ") ";\n\t" str)))  

and (profile_of_node_exp_eff: Lic.node_exp -> string) =
  fun neff ->
    ("(" ^ (string_of_type_decl_list  neff.inlist_eff "; ") ^ ") returns (" ^
       (string_of_type_decl_list neff.outlist_eff "; ") ^ ")")

and (string_of_node_def : Lic.node_def -> string list) =
  function
    | ExternLic
    | MetaOpLic _
    | AbstractLic _ -> []
    | BodyLic node_body_eff -> 
        List.append
          (List.map string_of_assert node_body_eff.asserts_eff)
          (List.map string_of_eq node_body_eff.eqs_eff)

          

(* exported *)
and (type_decl: Ident.long -> Lic.type_ -> string) =
  fun tname teff -> 
    "type " ^ (dump_long tname) ^ 
      (match teff with
         | Enum_type_eff (_) -> 
             if !Global.expand_enums then  ";\n" else
                " = " ^ (string_def_of_type_eff teff) ^ ";\n"
         | External_type_eff (_) 
         | Abstract_type_eff(_,External_type_eff (_)) -> ";\n"
         | _ ->  " = " ^ (string_def_of_type_eff teff) ^ ";\n"
      )
      
(* exported *)
and (const_decl: Ident.long -> Lic.const -> string) =
  fun tname ceff -> 
    let begin_str = ("const " ^ (dump_long tname)) in
    let end_str = (string_of_const_eff ceff) ^ ";\n" in
      (match ceff with 
         | Enum_const_eff(id, t)  -> 
             if !Global.expand_enums then
               (begin_str ^ " : "^(string_of_type_eff t) ^ ";\n")
             else 
               (* generate abstract constant *)
               "" 
         | Extern_const_eff _
         | Abstract_const_eff _ ->
             begin_str ^ " : " ^ (string_of_type_eff (Lic.type_of_const ceff)) ^ 
(*                (if !Global.ec then ".\n" else  *)
               (";\n")
         | Struct_const_eff _
         | Array_const_eff _
         | Bool_const_eff _
         | Int_const_eff _
         | Real_const_eff _ -> begin_str ^ " = " ^ end_str
			| Tuple_const_eff _ ->
				print_internal_error "LicDump.const_decl" "should not have been called for a tuple";
				assert false
      ) 

        
(* exported *)
and node_of_node_exp_eff
   (neff: Lic.node_exp)
: string =
   wrap_long_profile (
      
      (
         if neff.def_eff = ExternLic && not (!Global.lv4)
         (* no extern kwd in v4... *)
         then "extern " else ""
      )^(
         if !Global.lv4 then (
         (* node and function does not have the same meaning in v4... *)
            if neff.def_eff = ExternLic then "function " else "node "
         ) else (
            if neff.has_mem_eff  then "node " else "function "
         )
      )^(
         string_of_node_key_rec neff.node_key_eff
      )^(
         profile_of_node_exp_eff neff
      )
   )^(
      match neff.def_eff with
         | ExternLic ->  ";\n"
         | MetaOpLic nk -> (
            (* on écrit juste un alias *)
            " = "^
            (string_of_node_key_def nk)^
            (";\n")
         )
         | AbstractLic _ -> ";\n"
         | BodyLic _ -> (
            ";\n"^
            (
               match neff.loclist_eff with
               | None -> ""
               | Some [] -> ""
               | Some l ->
                     "var\n   " ^ (string_of_type_decl_list l ";\n   ") ^ ";\n"
            ) ^
            "let\n   " ^
            (String.concat "\n   " (string_of_node_def neff.def_eff)) ^
            "\ntel\n-- end of node " ^
            (string_of_node_key_rec neff.node_key_eff) ^ "\n"
         )
      )


and (string_of_clock_exp : AstCore.clock_exp -> string) = 
  function
    | AstCore.Base -> ""
    | AstCore.NamedClock clk -> 
        " when " ^ (string_of_ident_clk clk.it)

and (string_of_ident_clk : Ident.clk -> string) =
  fun clk -> 
    let (cc,v) = clk in
    let clk_exp_str =
      match Ident.string_of_idref cc with
        | "True" -> (Ident.to_string v)
        | "False" ->  "not " ^ (Ident.to_string v)
        | _ -> 
            if !Global.lv4 then 
              raise (Errors.Global_error 
                       ("*** Cannot generate V4 style Lustre for programs with enumerated "^
                          "clocks (yet), sorry."))
            else 
              Ident.string_of_clk clk
    in
      clk_exp_str


(* exported *)
and string_of_clock2 (ck : Lic.clock) =
  match ck with
    | BaseLic -> " on base"
    | On(clk_exp,ceff) ->
        let clk_exp_str = string_of_ident_clk clk_exp in
          " on " ^ clk_exp_str ^ (string_of_clock2 ceff)
    | ClockVar i ->  "'a" ^ string_of_int i
        
        
and string_of_clock (ck : Lic.clock) =
  match ck with
    | BaseLic -> ""
    | On(clk_exp,_) -> 
        let clk_exp_str = string_of_ident_clk clk_exp in
          " when " ^ clk_exp_str
    | ClockVar _ ->  
        "" (* it migth occur that (unused) constant remain with a clock var.
              But in that case, it is ok to consider then as on the base clock.
           *)
          (*     | ClockVar i -> "_clock_var_" ^ (string_of_int i) *)

and op2string op = 
  (* Une verrue pour compatible avec les outils qui mangent du ec...  *)
  if !Global.ec && op =  AstPredef.INT2REAL_n then "real"  else 
    AstPredef.op2string op

(*---------------------------------------------------------------------
Formatage standard des erreurs de compil
----------------------------------------------------------------------*)
let node_error_string lxm nkey = (
   Printf.sprintf "While checking %s" (string_of_node_key_iter nkey)
)

(*---------------------------------------------------------------------
Message d'erreur (associé à un lexeme) sur stderr
----------------------------------------------------------------------*)
let print_compile_node_error nkey lxm msg = (
   Printf.eprintf "%s\n" (node_error_string lxm nkey);
  Errors.print_compile_error lxm msg ;
   flush stderr
)

let print_global_node_error lxm nkey msg = (
   Printf.eprintf "%s\n" (node_error_string lxm nkey);
  Errors.print_global_error msg ;
   flush stderr
)