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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015 *)
(* \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 Errors
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
type split_tree=
Skip_patt of Id.Set.t * split_tree
| Split_patt of Id.Set.t * inductive *
(bool array * (Id.Set.t * split_tree) option) array
| Close_patt of split_tree
| End_patt of (Id.t * (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 * Id.t 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
match Store.get (Goal.V82.extra sigma goal) info with
| None -> Mode_tactic
| Some _ -> Mode_proof
let get_current_mode () =
try
mode_of_pftreestate (Pfedit.get_pftreestate ())
with Proof_global.NoCurrentProof -> Mode_none
let check_not_proof_mode str =
match get_current_mode () with
| Mode_proof -> error str
| _ -> ()
let get_info sigma gl=
match Store.get (Goal.V82.extra sigma gl) info with
| None -> invalid_arg "get_info"
| Some pm -> pm
let try_get_info sigma gl =
Store.get (Goal.V82.extra sigma gl) info
let get_goal_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.done_cond proof_focus
let focus p =
let inf = get_goal_stack p in
Proof_global.simple_with_current_proof (fun _ -> Proof.focus proof_cond inf 1)
let unfocus () =
Proof_global.simple_with_current_proof (fun _ p -> Proof.unfocus proof_focus p ())
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_stack pts = Proof.get_at_focus proof_focus pts
let get_last env = match Environ.named_context env with
| (id,_,_)::_ -> id
| [] -> error "no previous statement to use"
let get_end_command pts =
match get_top_stack pts with
| [] -> "\"end proof\""
| Claim::_ -> "\"end claim\""
| Focus_claim::_-> "\"end focus\""
| Suppose_case :: Per (et,_,_,_) :: _ | Per (et,_,_,_) :: _ ->
begin
match et with
Decl_expr.ET_Case_analysis ->
"\"end cases\" or start a new case"
| Decl_expr.ET_Induction ->
"\"end induction\" or start a new case"
end
| _ -> anomaly (Pp.str"lonely suppose")
|
