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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2014 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Names
open Term
open Evd
open Util
let daimon_flag = ref false
let set_daimon_flag () = daimon_flag:=true
let clear_daimon_flag () = daimon_flag:=false
let get_daimon_flag () = !daimon_flag
(* Information associated to goals. *)
open Store.Field
type split_tree=
Skip_patt of Idset.t * split_tree
| Split_patt of Idset.t * inductive *
(bool array * (Idset.t * split_tree) option) array
| Close_patt of split_tree
| End_patt of (identifier * (int * int))
type elim_kind =
EK_dep of split_tree
| EK_nodep
| EK_unknown
type recpath = int option*Declarations.wf_paths
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;
per_wf:recpath}
type stack_info =
Per of Decl_expr.elim_type * per_info * elim_kind * identifier list
| Suppose_case
| Claim
| Focus_claim
type pm_info =
{ pm_stack : stack_info list}
let info = Store.field ()
(* Current proof mode *)
type command_mode =
Mode_tactic
| Mode_proof
| Mode_none
let mode_of_pftreestate pts =
(* spiwack: it used to be "top_goal_..." but this should be fine *)
let { it = goals ; sigma = sigma } = Proof.V82.subgoals pts in
let goal = List.hd goals in
if info.get (Goal.V82.extra sigma goal) = None then
Mode_tactic
else
Mode_proof
let get_current_mode () =
try
mode_of_pftreestate (Pfedit.get_pftreestate ())
with e when Errors.noncritical e -> Mode_none
let check_not_proof_mode str =
if get_current_mode () = Mode_proof then
error str
let get_info sigma gl=
match info.get (Goal.V82.extra sigma gl) with
| None -> invalid_arg "get_info"
| Some pm -> pm
let try_get_info sigma gl =
info.get (Goal.V82.extra sigma gl)
let get_stack pts =
let { it = goals ; sigma = sigma } = Proof.V82.subgoals pts in
let info = get_info sigma (List.hd goals) in
info.pm_stack
let proof_focus = Proof.new_focus_kind ()
let proof_cond = Proof.no_cond proof_focus
let focus p =
let inf = get_stack p in
Proof.focus proof_cond inf 1 p
let unfocus = Proof.unfocus proof_focus
let maximal_unfocus = Proof_global.maximal_unfocus proof_focus
let get_top_stack pts =
try
Proof.get_at_focus proof_focus pts
with Proof.NoSuchFocus ->
let { it = gl ; sigma = sigma } = Proof.V82.top_goal pts in
let info = get_info sigma gl in
info.pm_stack
let get_last env =
try
let (id,_,_) = List.hd (Environ.named_context env) in id
with Invalid_argument _ -> error "no previous statement to use"
|
