--- /dev/null
+(* Copyright (C) 2000, 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/.
+ *)
+
+(******************************************************************************)
+(* *)
+(* PROJECT HELM *)
+(* *)
+(* Claudio Sacerdoti Coen <sacerdot@cs.unibo.it> *)
+(* 02/12/2002 *)
+(* *)
+(* Missing description *)
+(* *)
+(******************************************************************************)
+
+(* $Id$ *)
+
+module T = MQGTypes
+module U = MQGUtil
+
+type classification =
+ Backbone of int
+ | Branch of int
+ | InConclusion
+ | InHypothesis
+;;
+
+let soften_classification =
+ function
+ Backbone _ -> InConclusion
+ | Branch _ -> InHypothesis
+ | k -> k
+;;
+
+let (!!) =
+ function
+ Backbone n -> `MainConclusion (Some n)
+ | Branch n -> `MainHypothesis (Some n)
+ | _ -> assert false
+;;
+
+let (!!!) =
+ function
+ Backbone n -> `MainConclusion (Some n)
+ | Branch n -> `MainHypothesis (Some n)
+ | InConclusion -> `InConclusion
+ | InHypothesis -> `InHypothesis
+;;
+
+
+let (@@) (l1,l2,l3) (l1',l2',l3') =
+ let merge l1 l2 =
+ List.fold_left (fun i t -> if List.mem t l2 then i else t::i) l2 l1
+ in
+ merge l1 l1', merge l2 l2', merge l3 l3'
+;;
+
+let get_constraints term =
+ let module U = UriManager in
+ let module C = Cic in
+ let rec process_type_aux kind =
+ function
+ C.Var (uri,expl_named_subst) ->
+ (* andrea: this is a bug: variable are not indexedin the db
+ ([!!!kind, UriManager.string_of_uri uri],[],[]) @@ *)
+ (process_type_aux_expl_named_subst kind expl_named_subst)
+ | C.Rel _ ->
+ (match kind with
+ | InConclusion
+ | InHypothesis -> [],[],[]
+ | _ -> [],[!!kind],[])
+ | C.Sort s ->
+ (match kind with
+ Backbone _
+ | Branch _ ->
+ let s' =
+ match s with
+ Cic.Prop -> T.Prop
+ | Cic.Set -> T.Set
+ | Cic.Type _ -> T.Type (* TASSI: ?? *)
+ | Cic.CProp -> T.CProp
+ in
+ [],[],[!!kind,s']
+ | _ -> [],[],[])
+ | C.Meta _ -> [],[],[] (* ???? To be understood *)
+ | C.Implicit _ -> assert false
+ | C.Cast (te,_) ->
+ (* type ignored *)
+ process_type_aux kind te
+ | C.Prod (_,sou,ta) ->
+ let (source_kind,target_kind) =
+ match kind with
+ Backbone n -> (Branch 0, Backbone (n+1))
+ | Branch n -> (InHypothesis, Branch (n+1))
+ | k -> (k,k)
+ in
+ process_type_aux source_kind sou @@
+ process_type_aux target_kind ta
+ | C.Lambda (_,sou,ta) ->
+ let kind' = soften_classification kind in
+ process_type_aux kind' sou @@
+ process_type_aux kind' ta
+ | C.LetIn (_,te,ta)->
+ let kind' = soften_classification kind in
+ process_type_aux kind' te @@
+ process_type_aux kind ta
+ | C.Appl (he::tl) ->
+ let kind' = soften_classification kind in
+ process_type_aux kind he @@
+ List.fold_left (fun i t -> i @@ process_type_aux kind' t) ([],[],[]) tl
+ | C.Appl _ -> assert false
+ | C.Const (uri,_) ->
+ [!!!kind, UriManager.string_of_uri uri],[],[]
+ | C.MutInd (uri,typeno,expl_named_subst) ->
+ ([!!!kind, U.string_of_uri uri ^ "#xpointer(1/" ^
+ string_of_int (typeno + 1) ^ ")"],[],[]) @@
+ (process_type_aux_expl_named_subst kind expl_named_subst)
+ | C.MutConstruct (uri,typeno,consno,expl_named_subst) ->
+ ([!!!kind, U.string_of_uri uri ^ "#xpointer(1/" ^
+ string_of_int (typeno + 1) ^ "/" ^ string_of_int consno ^ ")"],[],[])
+ @@ (process_type_aux_expl_named_subst kind expl_named_subst)
+ | C.MutCase (_,_,_,term,patterns) ->
+ (* outtype ignored *)
+ let kind' = soften_classification kind in
+ process_type_aux kind' term @@
+ List.fold_left (fun i t -> i @@ process_type_aux kind' t)
+ ([],[],[]) patterns
+ | C.Fix (_,funs) ->
+ let kind' = soften_classification kind in
+ List.fold_left
+ (fun i (_,_,bo,ty) ->
+ i @@
+ process_type_aux kind' bo @@
+ process_type_aux kind' ty
+ ) ([],[],[]) funs
+ | C.CoFix (_,funs) ->
+ let kind' = soften_classification kind in
+ List.fold_left
+ (fun i (_,bo,ty) ->
+ i @@
+ process_type_aux kind' bo @@
+ process_type_aux kind' ty
+ ) ([],[],[]) funs
+ and process_type_aux_expl_named_subst kind =
+ List.fold_left
+ (fun i (_,t) -> i @@ (process_type_aux (soften_classification kind) t))
+ ([],[],[])
+in
+ let obj_constraints,rel_constraints,sort_constraints =
+ process_type_aux (Backbone 0) (CicMiniReduction.letin_nf term)
+ in
+ (obj_constraints,rel_constraints,sort_constraints)
+;;
+
+(*CSC: Debugging only *)
+(*
+let get_constraints term =
+ let res = get_constraints term in
+ let (objs,rels,sorts) = res in
+ let text_of_pos p =
+ U.text_of_position p ^ " " ^ U.text_of_depth p "NULL"
+ in
+ prerr_endline "Constraints on objs:" ;
+ List.iter
+ (function (p, u) -> prerr_endline (text_of_pos p ^ " " ^ u)) objs ;
+ prerr_endline "Constraints on Rels:" ;
+ List.iter (function p -> prerr_endline (text_of_pos (p:>T.full_position))) rels ;
+ prerr_endline "Constraints on Sorts:" ;
+ List.iter
+ (function (p, s) -> prerr_endline (text_of_pos (p:>T.full_position) ^ " " ^ U.text_of_sort s)
+ ) sorts ;
+ res
+;; *)
+
+let universe =
+ [T.MainHypothesis; T.InHypothesis; T.MainConclusion; T.InConclusion]
projects / helm.git / blobdiff