+++ /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://cs.unibo.it/helm/.
- *)
-
-type equality =
- int * (* weight *)
- proof * (* proof *)
- (Cic.term * (* type *)
- Cic.term * (* left side *)
- Cic.term * (* right side *)
- Utils.comparison) * (* ordering *)
- Cic.metasenv * (* environment for metas *)
- Cic.term list (* arguments *)
-
-and proof =
- | NoProof
- | BasicProof of Cic.term (* already a proof of a goal *)
- | ProofBlock of (* proof of a rewrite step *)
- Cic.substitution * UriManager.uri * (* eq_ind or eq_ind_r *)
- (Cic.name * Cic.term) * Cic.term * (Utils.pos * equality) * proof
- | ProofGoalBlock of proof * proof
- (* proof of the new meta, proof of the goal from which this comes *)
- | ProofSymBlock of Cic.term list * proof (* expl.named subst, proof *)
- | SubProof of Cic.term * int * proof
- (* parent proof, subgoal, proof of the subgoal *)
-
-type environment = Cic.metasenv * Cic.context * CicUniv.universe_graph
-
-(** builds the Cic.term encoded by proof *)
-val build_proof_term: proof -> Cic.term
-
-val string_of_proof: proof -> string
-
-exception MatchingFailure
-
-(** matching between two terms. Can raise MatchingFailure *)
-val matching:
- Cic.metasenv -> Cic.context -> Cic.term -> Cic.term ->
- CicUniv.universe_graph ->
- Cic.substitution * Cic.metasenv * CicUniv.universe_graph
-
-(**
- special unification that checks if the two terms are "simple", and in
- such case should be significantly faster than CicUnification.fo_unif
-*)
-val unification:
- Cic.metasenv -> Cic.context -> Cic.term -> Cic.term ->
- CicUniv.universe_graph ->
- Cic.substitution * Cic.metasenv * CicUniv.universe_graph
-
-
-(**
- scans the context to find all Declarations "left = right"; returns a
- list of tuples (proof, (type, left, right), newmetas). Uses
- PrimitiveTactics.new_metasenv_for_apply to replace bound variables with
- fresh metas...
-*)
-val find_equalities:
- Cic.context -> ProofEngineTypes.proof -> int list * equality list * int
-
-(**
- searches the library for equalities that can be applied to the current goal
-*)
-val find_library_equalities:
- HMysql.dbd -> Cic.context -> ProofEngineTypes.status -> int ->
- UriManager.UriSet.t * (UriManager.uri * equality) list * int
-
-(**
- searches the library for theorems that are not equalities (returned by the
- function above)
-*)
-val find_library_theorems:
- HMysql.dbd -> environment -> ProofEngineTypes.status -> UriManager.UriSet.t ->
- (Cic.term * Cic.term * Cic.metasenv) list
-
-(**
- searches the context for hypotheses that are not equalities
-*)
-val find_context_hypotheses:
- environment -> int list -> (Cic.term * Cic.term * Cic.metasenv) list
-
-
-exception TermIsNotAnEquality;;
-
-(**
- raises TermIsNotAnEquality if term is not an equation.
- The first Cic.term is a proof of the equation
-*)
-val equality_of_term: Cic.term -> Cic.term -> equality
-
-(**
- Re-builds the term corresponding to this equality
-*)
-val term_of_equality: equality -> Cic.term
-
-val term_is_equality: Cic.term -> bool
-
-(** tests a sort of alpha-convertibility between the two terms, but on the
- metavariables *)
-val meta_convertibility: Cic.term -> Cic.term -> bool
-
-(** meta convertibility between two equations *)
-val meta_convertibility_eq: equality -> equality -> bool
-
-val is_identity: environment -> equality -> bool
-
-val string_of_equality: ?env:environment -> equality -> string
-
-val metas_of_term: Cic.term -> int list
-
-(** ensures that metavariables in equality are unique *)
-val fix_metas: int -> equality -> int * equality