(* $Id: terms.mli 9822 2009-06-03 15:37:06Z tassi $ *)
+let eqPref = ref (fun _ -> assert false);;
+let set_eqP t = eqPref := fun _ -> t;;
+
+let default_eqP() =
+ let uri = NUri.uri_of_string "cic:/matita/ng/Plogic/equality/eq.ind" in
+ let ref = NReference.reference_of_spec uri (NReference.Ind(true,0,2)) in
+ NCic.Const ref
+
+let set_default_eqP() = eqPref := default_eqP
+
+let set_reference_of_oxuri f =
+ let eqnew = function
+ _ ->
+ let r = f(UriManager.uri_of_string
+ "cic:/matita/logic/equality/eq.ind#xpointer(1/1)")
+ in
+ NCic.Const r
+ in
+ eqPref := eqnew
+;;
+
+
module type NCicContext =
sig
val metasenv : NCic.metasenv
val context : NCic.context
end
-module NCicBlob(C : NCicContext) : Terms.Blob with type t = NCic.term = struct
+module NCicBlob(C : NCicContext) : Terms.Blob
+with type t = NCic.term and type input = NCic.term = struct
type t = NCic.term
- let eq x y = NCicReduction.alpha_eq C.metasenv C.subst C.context x y;;
+ let eq x y = x = y;;
+ (* NCicReduction.alpha_eq C.metasenv C.subst C.context x y;; *)
let rec compare x y =
match x,y with
- | NCic.Rel i, NCic.Rel j -> i-j
+ | NCic.Rel i, NCic.Rel j -> j-i
+ | NCic.Meta (i,_), NCic.Meta (j,_) -> i-j
| NCic.Const r1, NCic.Const r2 -> NReference.compare r1 r2
- | NCic.Appl l1, NCic.Appl l2 -> assert false (* TODO *)
- | _ -> assert false
+ | NCic.Appl l1, NCic.Appl l2 -> FoUtils.lexicograph compare l1 l2
+ | NCic.Rel _, ( NCic.Meta _ | NCic.Const _ | NCic.Appl _ ) -> ~-1
+ | ( NCic.Meta _ | NCic.Const _ | NCic.Appl _ ), NCic.Rel _ -> 1
+ | NCic.Const _, ( NCic.Meta _ | NCic.Appl _ ) -> ~-1
+ | ( NCic.Meta _ | NCic.Appl _ ), NCic.Const _ -> 1
+ | NCic.Appl _, NCic.Meta _ -> ~-1
+ | NCic.Meta _, NCic.Appl _ -> 1
+ | _ -> Pervasives.compare x y
+ (* was assert false, but why? *)
+
+ ;;
+
+ let compare x y =
+ (* if NCicReduction.alpha_eq C.metasenv C.subst C.context x y then 0 *)
+ if x = y then 0
+ else compare x y
;;
let pp t =
NCicPp.ppterm ~context:C.context ~metasenv:C.metasenv ~subst:C.subst t;;
+ type input = NCic.term
+
let rec embed = function
| NCic.Meta (i,_) -> Terms.Var i, [i]
| NCic.Appl l ->
let sty = embed sty in
proof, sty
;;
-
- let eqP =
- let r =
- OCic2NCic.reference_of_oxuri
- (UriManager.uri_of_string
- "cic:/matita/logic/equality/eq.ind#xpointer(1/1)")
- in
- NCic.Const r
+
+ let eqP = (!eqPref)()
;;
-
end