+++ /dev/null
-(* Copyright (C) 2005, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://helm.cs.unibo.it/
- *)
-
-exception Error of string Lazy.t
-
-type goal = ProofEngineTypes.goal
-
-(** {2 Goal stack} *)
-
-module Stack:
-sig
- type switch = Open of goal | Closed of goal
- type locator = int * switch
- type tag = [ `BranchTag | `FocusTag | `NoTag ]
- type entry = locator list * locator list * locator list * tag
- type t = entry list
-
- val empty: t
-
- val find_goal: t -> goal (** find "next" goal *)
- val is_empty: t -> bool (** a singleton empty level *)
- val of_metasenv: Cic.metasenv -> t
- val head_switches: t -> switch list (** top level switches *)
- val head_goals: t -> goal list (** top level goals *)
- val head_tag: t -> tag (** top level tag *)
- val shift_goals: t -> goal list (** second level goals *)
- val open_goals: t -> goal list (** all (Open) goals *)
- val goal_of_switch: switch -> goal
-
- (** @param int depth, depth 0 is the top of the stack *)
- val fold:
- env: ('a -> int -> tag -> locator -> 'a) ->
- cont:('a -> int -> tag -> locator -> 'a) ->
- todo:('a -> int -> tag -> locator -> 'a) ->
- 'a -> t -> 'a
-
- val iter: (** @param depth as above *)
- env: (int -> tag -> locator -> unit) ->
- cont:(int -> tag -> locator -> unit) ->
- todo:(int -> tag -> locator -> unit) ->
- t -> unit
-
- val map: (** @param depth as above *)
- env: (int -> tag -> locator list -> locator list) ->
- cont:(int -> tag -> locator list -> locator list) ->
- todo:(int -> tag -> locator list -> locator list) ->
- t -> t
-
- val pp: t -> string
-end
-
-(** {2 Functorial interface} *)
-
-module type Status =
-sig
- type input_status
- type output_status
-
- type tactic
-
- val id_tactic : tactic
- val mk_tactic : (input_status -> output_status) -> tactic
- val apply_tactic : tactic -> input_status -> output_status
-
- val goals : output_status -> goal list * goal list (** opened, closed goals *)
- val set_goals: goal list * goal list -> output_status -> output_status
- val get_stack : input_status -> Stack.t
- val set_stack : Stack.t -> output_status -> output_status
-
- val inject : input_status -> output_status
- val focus : goal -> output_status -> input_status
-end
-
-module type C =
-sig
- type input_status
- type output_status
- type tactic
-
- type tactical =
- | Tactic of tactic
- | Skip
-
- type t =
- | Dot
- | Semicolon
-
- | Branch
- | Shift
- | Pos of int
- | Merge
- | Focus of goal list
- | Unfocus
-
- | Tactical of tactical
-
- val eval: t -> input_status -> output_status
-end
-
-module Make (S: Status) : C
- with type tactic = S.tactic
- and type input_status = S.input_status
- and type output_status = S.output_status
-