open Names
open Term

type tag = int 

type structured_constant =
  | Const_sorts of sorts
  | Const_ind of inductive
  | Const_b0 of tag                
  | Const_bn of tag * structured_constant array

type reloc_table = (tag * int) array 

type annot_switch = 
   {ci : case_info; rtbl : reloc_table; tailcall : bool}

module Label : 
  sig
    type t = int
    val no : t
    val create : unit -> t
    val reset_label_counter : unit -> unit
  end 

type instruction =
  | Klabel of Label.t
  | Kacc of int
  | Kenvacc of int
  | Koffsetclosure of int
  | Kpush
  | Kpop of int
  | Kpush_retaddr of Label.t
  | Kapply of int                       (*  number of arguments *)
  | Kappterm of int * int               (* number of arguments, slot size *)
  | Kreturn of int                      (* slot size *)
  | Kjump
  | Krestart
  | Kgrab of int                        (* number of arguments *)
  | Kgrabrec of int                     (* rec arg *)
  | Kcograb of int                      (* number of arguments *)
  | Kclosure of Label.t * int           (* label, number of free variables *)
  | Kclosurerec of int * int * Label.t array * Label.t array 
                   (* nb fv, init, lbl types, lbl bodies *)
  | Kgetglobal of constant
  | Kconst of structured_constant
  | Kmakeblock of int * tag             (* size, tag *)
  | Kmakeprod 
  | Kmakeswitchblock of Label.t * Label.t * annot_switch * int
  | Kforce
  | Kswitch of Label.t array * Label.t array (* consts,blocks *)
  | Kpushfield of int 
  | Kstop
  | Ksequence of bytecodes * bytecodes

and bytecodes = instruction list

type fv_elem = FVnamed of identifier | FVrel of int

type fv = fv_elem array

val draw_instr : bytecodes -> unit