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(************************************************************************)
(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(*   \VV/  **************************************************************)
(*    //   *      This file is distributed under the terms of the       *)
(*         *       GNU Lesser General Public License Version 2.1        *)
(************************************************************************)

(* $Id$ *)

open Names
open Term
open Evd
open Tacmach

val set_daimon_flag : unit -> unit
val clear_daimon_flag : unit -> unit
val get_daimon_flag : unit -> bool

type command_mode =
    Mode_tactic
  | Mode_proof
  | Mode_none

val mode_of_pftreestate : pftreestate -> command_mode
    
val get_current_mode : unit -> command_mode

val check_not_proof_mode : string -> unit

type split_tree=
    Push of  (Idset.t * split_tree)
  | Split of (Idset.t * inductive * (Idset.t*split_tree) option array)
  | Pop of split_tree
  | End_of_branch of (identifier * int)

type elim_kind =
    EK_dep of split_tree
  | EK_nodep
  | EK_unknown


type per_info = 
    {per_casee:constr;
     per_ctype:types;
     per_ind:inductive;
     per_pred:constr;
     per_args:constr list;
     per_params:constr list;
     per_nparams:int}

type stack_info = 
    Per of Decl_expr.elim_type * per_info * elim_kind * Names.identifier list
  | Suppose_case
  | Claim
  | Focus_claim

type pm_info =
    { pm_last: (Names.identifier * bool) option (* anonymous if none *);
      pm_partial_goal : constr ; (* partial goal construction *)
      pm_subgoals : (metavariable*constr) list;
      pm_stack : stack_info list }

val pm_in : pm_info -> Dyn.t

val get_info : Proof_type.goal -> pm_info

val get_end_command : pftreestate -> string option

val get_stack : pftreestate -> stack_info list

val get_top_stack : pftreestate -> stack_info list