1 (* Copyright (C) 2000, 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.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
26 (******************************************************************************)
30 (* Claudio Sacerdoti Coen <sacerdot@cs.unibo.it> *)
33 (* Missing description *)
35 (******************************************************************************)
49 let soften_classification =
51 Backbone _ -> InConclusion
52 | Branch _ -> InHypothesis
58 Backbone n -> `MainConclusion (Some n)
59 | Branch n -> `MainHypothesis (Some n)
65 Backbone n -> `MainConclusion (Some n)
66 | Branch n -> `MainHypothesis (Some n)
67 | InConclusion -> `InConclusion
68 | InHypothesis -> `InHypothesis
72 let (@@) (l1,l2,l3) (l1',l2',l3') =
74 List.fold_left (fun i t -> if List.mem t l2 then i else t::i) l2 l1
76 merge l1 l1', merge l2 l2', merge l3 l3'
79 let get_constraints term =
80 let module U = UriManager in
82 let rec process_type_aux kind =
84 C.Var (uri,expl_named_subst) ->
85 (* andrea: this is a bug: variable are not indexedin the db
86 ([!!!kind, UriManager.string_of_uri uri],[],[]) @@ *)
87 (process_type_aux_expl_named_subst kind expl_named_subst)
91 | InHypothesis -> [],[],[]
92 | _ -> [],[!!kind],[])
101 | Cic.Type _ -> T.Type (* TASSI: ?? *)
102 | Cic.CProp -> T.CProp
106 | C.Meta _ -> [],[],[] (* ???? To be understood *)
107 | C.Implicit _ -> assert false
110 process_type_aux kind te
111 | C.Prod (_,sou,ta) ->
112 let (source_kind,target_kind) =
114 Backbone n -> (Branch 0, Backbone (n+1))
115 | Branch n -> (InHypothesis, Branch (n+1))
118 process_type_aux source_kind sou @@
119 process_type_aux target_kind ta
120 | C.Lambda (_,sou,ta) ->
121 let kind' = soften_classification kind in
122 process_type_aux kind' sou @@
123 process_type_aux kind' ta
124 | C.LetIn (_,te,ta)->
125 let kind' = soften_classification kind in
126 process_type_aux kind' te @@
127 process_type_aux kind ta
129 let kind' = soften_classification kind in
130 process_type_aux kind he @@
131 List.fold_left (fun i t -> i @@ process_type_aux kind' t) ([],[],[]) tl
132 | C.Appl _ -> assert false
134 [!!!kind, UriManager.string_of_uri uri],[],[]
135 | C.MutInd (uri,typeno,expl_named_subst) ->
136 ([!!!kind, U.string_of_uri uri ^ "#xpointer(1/" ^
137 string_of_int (typeno + 1) ^ ")"],[],[]) @@
138 (process_type_aux_expl_named_subst kind expl_named_subst)
139 | C.MutConstruct (uri,typeno,consno,expl_named_subst) ->
140 ([!!!kind, U.string_of_uri uri ^ "#xpointer(1/" ^
141 string_of_int (typeno + 1) ^ "/" ^ string_of_int consno ^ ")"],[],[])
142 @@ (process_type_aux_expl_named_subst kind expl_named_subst)
143 | C.MutCase (_,_,_,term,patterns) ->
144 (* outtype ignored *)
145 let kind' = soften_classification kind in
146 process_type_aux kind' term @@
147 List.fold_left (fun i t -> i @@ process_type_aux kind' t)
150 let kind' = soften_classification kind in
152 (fun i (_,_,bo,ty) ->
154 process_type_aux kind' bo @@
155 process_type_aux kind' ty
157 | C.CoFix (_,funs) ->
158 let kind' = soften_classification kind in
162 process_type_aux kind' bo @@
163 process_type_aux kind' ty
165 and process_type_aux_expl_named_subst kind =
167 (fun i (_,t) -> i @@ (process_type_aux (soften_classification kind) t))
170 let obj_constraints,rel_constraints,sort_constraints =
171 process_type_aux (Backbone 0) (CicMiniReduction.letin_nf term)
173 (obj_constraints,rel_constraints,sort_constraints)
176 (*CSC: Debugging only *)
178 let get_constraints term =
179 let res = get_constraints term in
180 let (objs,rels,sorts) = res in
182 U.text_of_position p ^ " " ^ U.text_of_depth p "NULL"
184 prerr_endline "Constraints on objs:" ;
186 (function (p, u) -> prerr_endline (text_of_pos p ^ " " ^ u)) objs ;
187 prerr_endline "Constraints on Rels:" ;
188 List.iter (function p -> prerr_endline (text_of_pos (p:>T.full_position))) rels ;
189 prerr_endline "Constraints on Sorts:" ;
191 (function (p, s) -> prerr_endline (text_of_pos (p:>T.full_position) ^ " " ^ U.text_of_sort s)
197 [T.MainHypothesis; T.InHypothesis; T.MainConclusion; T.InConclusion]