1 (* Copyright (C) 2005, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
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8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
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15 * GNU General Public License for more details.
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19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://helm.cs.unibo.it/
26 exception Error of string
32 type metasenv = conjecture list
35 val goal_of_conjecture: conjecture -> goal
36 val is_goal_in_metasenv: metasenv -> goal -> bool
39 tactic -> metasenv -> goal ->
40 metasenv * goal list * goal list
43 module Make (E:Engine) :
45 type goal_switch = Open of E.goal | Closed of E.goal
46 type 'a stack = 'a list
48 E.metasenv * ((int * goal_switch) list * E.goal list * E.goal list) stack
60 | Select of E.goal list
62 | Tactical of tactical
64 val eval: t -> status -> status