1 (* Copyright (C) 2005, HELM Team.
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4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
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28 open Discrimination_tree
30 module TermOT : Set.OrderedType with type t = NCic.term = struct
32 let compare = Pervasives.compare
35 module TermSet = Set.Make(TermOT)
37 module NCicIndexable : Indexable
38 with type input = NCic.term and type constant_name = NUri.uri = struct
40 type input = NCic.term
41 type constant_name = NUri.uri
44 | Constant (uri,arity) ->
45 "("^NUri.name_of_uri uri ^ "," ^ string_of_int arity^")"
47 "("^string_of_int i ^ "," ^ string_of_int arity^")"
49 | Proposition -> "Prop"
55 let rec aux arity = function
56 | NCic.Appl ((NCic.Meta _|NCic.Implicit _)::_) -> [Variable]
57 | NCic.Appl (NCic.Lambda _ :: _) -> [Variable] (* maybe we should b-reduce *)
58 | NCic.Appl [] -> assert false
59 | NCic.Appl (hd::tl) ->
60 aux (List.length tl) hd @ List.flatten (List.map (aux 0) tl)
61 | NCic.Lambda _ | NCic.Prod _ -> [Variable]
62 (* I think we should CicSubstitution.subst Implicit t *)
63 | NCic.LetIn _ -> [Variable] (* z-reduce? *)
64 | NCic.Meta _ | NCic.Implicit _ -> assert (arity = 0); [Variable]
65 | NCic.Rel i -> [Bound (i, arity)]
66 | NCic.Sort (NCic.Prop) -> assert (arity=0); [Proposition]
67 | NCic.Sort _ -> assert (arity=0); [Datatype]
68 | NCic.Const (NReference.Ref (u,_)) -> [Constant (u, arity)]
69 | NCic.Match _ -> [Dead]
76 | Constant (u1,a1),Constant (u2,a2) ->
77 let x = NUri.compare u1 u2 in
78 if x = 0 then Pervasives.compare a1 a2 else x
79 | e1,e2 -> Pervasives.compare e1 e2
82 let string_of_path l = String.concat "." (List.map ppelem l) ;;
86 module DiscriminationTree = Make(NCicIndexable)(TermSet)