2 ||M|| This file is part of HELM, an Hypertextual, Electronic
3 ||A|| Library of Mathematics, developed at the Computer Science
4 ||T|| Department, University of Bologna, Italy.
6 ||T|| HELM is free software; you can redistribute it and/or
7 ||A|| modify it under the terms of the GNU General Public License
8 \ / version 2 or (at your option) any later version.
9 \ / This software is distributed as is, NO WARRANTY.
10 V_______________________________________________________________ *)
12 (* $Id: nCicRefiner.mli 9227 2008-11-21 16:00:06Z tassi $ *)
14 module COT : Set.OrderedType with type t = NCic.term =
17 let compare = Pervasives.compare
20 module HintSet = Set.Make(COT)
23 Discrimination_tree.Make(NDiscriminationTree.NCicIndexable)(HintSet)
27 let dummy = NCic.Const (NReference.reference_of_string "cic:/dummy_conv.dec");;
28 let pair t1 t2 = (NCic.Appl [dummy;t1;t2]) ;;
30 let index_hint hdb context t1 t2 =
33 | NCic.Meta _ | NCic.Appl (NCic.Meta _ :: _) -> false | _ -> true)
36 | NCic.Meta _ | NCic.Appl (NCic.Meta _ :: _) -> false | _ -> true)
38 let pair' = pair t1 t2 in
43 | NCic.Decl ty -> NCic.Prod (n,ty,t)
51 NCicSubstitution.subst (NCic.Meta (-1,(0,NCic.Irl 0))) t
55 prerr_endline ("INDEXING: " ^
56 NCicPp.ppterm ~metasenv:[] ~subst:[] ~context:[] src ^ " |==> " ^
57 NCicPp.ppterm ~metasenv:[] ~subst:[] ~context:[] data);
62 let empty_db = DB.empty ;;
64 let user_db = ref empty_db ;;
66 let add_user_provided_hint t =
67 let u = UriManager.uri_of_string "cic:/foo/bar.con" in
69 let rec aux ctx = function
71 (match List.rev l with
72 | b::a::_ -> ctx, a, b
74 | NCic.Prod (n,s,t) ->
75 aux ((n, NCic.Decl s) :: ctx) t
78 aux [] (fst (OCic2NCic.convert_term u t))
80 user_db := index_hint !user_db c a b
86 (let rec aux = function
87 | u1 :: tl -> List.map (f u1) tl :: aux tl
91 let mk_hint (u1,_,_) (u2,_,_) =
92 let l = OCic2NCic.convert_obj u1
93 (fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph u1)) in
94 let r = OCic2NCic.convert_obj u2
95 (fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph u2)) in
96 match List.hd l,List.hd r with
97 | (_,h1,_,_,NCic.Constant (_,_,Some l,_,_)),
98 (_,h2,_,_,NCic.Constant (_,_,Some r,_,_)) ->
99 let rec aux ctx t1 t2 =
101 | NCic.Lambda (n1,s1,b1), NCic.Lambda(_,s2,b2) ->
102 if NCicReduction.are_convertible ~subst:[] ~metasenv:[] ctx s1 s2
103 then aux ((n1, NCic.Decl s1) :: ctx) b1 b2
106 if NCicReduction.are_convertible ~subst:[] ~metasenv:[] ctx b1 b2
109 prerr_endline ("hint: " ^ NCicPp.ppterm ~metasenv:[] ~subst:[]
110 ~context:ctx b1 ^ " === " ^ NCicPp.ppterm ~metasenv:[]
111 ~subst:[] ~context:ctx b2);
114 function 0 -> [] | n -> NCic.Rel n :: mk_rels (n-1)
117 NCic.Appl (NCic.Const(OCic2NCic.reference_of_ouri
118 u1 (NReference.Def h1)) :: mk_rels (List.length ctx))
121 NCic.Appl (NCic.Const(OCic2NCic.reference_of_ouri
122 u2 (NReference.Def h2)) :: mk_rels (List.length ctx))
124 [ctx,b1,b2; ctx,b1,n2; ctx,n1,b2; ctx,n1,n2]
134 if List.length l > 1 then
137 [] (CoercDb.to_list ())
141 | (ctx,b1,b2) -> index_hint db ctx b1 b2)
142 !user_db (List.flatten hints)
146 let look_for_hint hdb metasenv subst context t1 t2 =
148 prerr_endline ("KEY1: "^NCicPp.ppterm ~metasenv ~subst ~context (pair t1 t2));
149 prerr_endline ("KEY2: "^NCicPp.ppterm ~metasenv ~subst ~context (pair t2 t1));
152 prerr_endline ("ENTRY: " ^
153 NDiscriminationTree.NCicIndexable.string_of_path p ^ " |--> " ^
154 String.concat "|" (List.map (NCicPp.ppterm ~metasenv:[] ~subst:[]
155 ~context:[]) (HintSet.elements ds))));
157 let candidates1 = DB.retrieve_unifiables hdb (pair t1 t2) in
158 let candidates2 = DB.retrieve_unifiables hdb (pair t2 t1) in
161 true,NCicMetaSubst.saturate ~delta:max_int metasenv subst context ty 0)
162 (HintSet.elements candidates1)
166 false,NCicMetaSubst.saturate ~delta:max_int metasenv subst context ty 0)
167 (HintSet.elements candidates2)
172 | (true,(NCic.Appl [_; t1; t2],metasenv,_)) -> metasenv, t1, t2
173 | (false,(NCic.Appl [_; t1; t2],metasenv,_)) -> metasenv, t2, t1
175 (candidates1 @ candidates2)
179 (fun (metasenv, t1, t2) ->
181 ("CAND: "^NCicPp.ppterm ~metasenv ~subst ~context t1 ^
182 " == "^NCicPp.ppterm ~metasenv ~subst ~context t2))