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: terms.mli 9822 2009-06-03 15:37:06Z tassi $ *)
14 let reference_of_oxuri = ref (fun _ -> assert false);;
15 let set_reference_of_oxuri f = reference_of_oxuri := f;;
17 module type NCicContext =
19 val metasenv : NCic.metasenv
20 val subst : NCic.substitution
21 val context : NCic.context
24 module NCicBlob(C : NCicContext) : Terms.Blob
25 with type t = NCic.term and type input = NCic.term = struct
29 let eq x y = NCicReduction.alpha_eq C.metasenv C.subst C.context x y;;
33 | NCic.Rel i, NCic.Rel j -> j-i
34 | NCic.Meta (i,_), NCic.Meta (j,_) -> i-j
35 | NCic.Const r1, NCic.Const r2 -> NReference.compare r1 r2
36 | NCic.Appl l1, NCic.Appl l2 -> FoUtils.lexicograph compare l1 l2
37 | NCic.Rel _, ( NCic.Meta _ | NCic.Const _ | NCic.Appl _ ) -> ~-1
38 | ( NCic.Meta _ | NCic.Const _ | NCic.Appl _ ), NCic.Rel _ -> 1
39 | NCic.Const _, ( NCic.Meta _ | NCic.Appl _ ) -> ~-1
40 | ( NCic.Meta _ | NCic.Appl _ ), NCic.Const _ -> 1
41 | NCic.Appl _, NCic.Meta _ -> ~-1
42 | NCic.Meta _, NCic.Appl _ -> 1
47 if NCicReduction.alpha_eq C.metasenv C.subst C.context x y then 0
52 NCicPp.ppterm ~context:C.context ~metasenv:C.metasenv ~subst:C.subst t;;
54 type input = NCic.term
56 let rec embed = function
57 | NCic.Meta (i,_) -> Terms.Var i, [i]
59 let rec aux acc l = function
61 |hd::tl -> if List.mem hd l then aux acc l tl else aux (hd::acc) l tl
63 let res,vars = List.fold_left
64 (fun (r,v) t -> let r1,v1 = embed t in (r1::r),aux [] v v1) ([],[]) l
65 in (Terms.Node (List.rev res)), vars
66 | t -> Terms.Leaf t, []
69 let embed t = fst (embed t) ;;
73 NCicMetaSubst.saturate ~delta:max_int C.metasenv C.subst C.context
77 if args = [] then Terms.Leaf t
78 else Terms.Node (Terms.Leaf t :: List.map embed args)
80 let sty = embed sty in
87 (UriManager.uri_of_string
88 "cic:/matita/logic/equality/eq.ind#xpointer(1/1)")