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
57 let empty_db = DB.empty ;;
60 let _,_,_,x,_,_ = NCicEnvironment.get_checked_def
61 (NReference.reference_of_string "cic:/matita/tests/pullback/xxx.def(0)")
63 let rec decontextualize ctx = function
64 | NCic.Prod (n,s,t) -> decontextualize ((n,NCic.Decl s)::ctx) t
67 match (decontextualize [] x) with
68 | ctx, NCic.Appl [_;_;a;b] -> index_hint empty_db ctx a b
73 let look_for_hint hdb metasenv subst context t1 t2 =
75 prerr_endline ("KEY1: "^NCicPp.ppterm ~metasenv ~subst ~context (pair t1 t2));
76 prerr_endline ("KEY2: "^NCicPp.ppterm ~metasenv ~subst ~context (pair t2 t1));
79 prerr_endline ("ENTRY: " ^
80 NDiscriminationTree.NCicIndexable.string_of_path p ^ " |--> " ^
81 String.concat "|" (List.map (NCicPp.ppterm ~metasenv:[] ~subst:[]
82 ~context:[]) (HintSet.elements ds))));
84 let candidates1 = DB.retrieve_unifiables hdb (pair t1 t2) in
85 let candidates2 = DB.retrieve_unifiables hdb (pair t2 t1) in
88 true,NCicMetaSubst.saturate ~delta:max_int metasenv subst context ty 0)
89 (HintSet.elements candidates1)
93 false,NCicMetaSubst.saturate ~delta:max_int metasenv subst context ty 0)
94 (HintSet.elements candidates2)
98 | (true,(NCic.Appl [_; t1; t2],metasenv,_)) -> metasenv, t1, t2
99 | (false,(NCic.Appl [_; t1; t2],metasenv,_)) -> metasenv, t2, t1
101 (candidates1 @ candidates2)