X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Fsoftware%2Fcomponents%2Fng_kernel%2FnCicEnvironment.ml;h=496ae54468471382ede458fc51fdd4c1bc0f96c4;hb=b637879a2b3f2ceda65afb3c950061189c4730b7;hp=2b98e8d4f0ea6c81a05dcc3fea02a4c34f87c672;hpb=345f329e767d0b4a1a87d10e08f92657a95c10ac;p=helm.git

diff --git a/helm/software/components/ng_kernel/nCicEnvironment.ml b/helm/software/components/ng_kernel/nCicEnvironment.ml
index 2b98e8d4f..496ae5446 100644
--- a/helm/software/components/ng_kernel/nCicEnvironment.ml
+++ b/helm/software/components/ng_kernel/nCicEnvironment.ml
@@ -11,9 +11,57 @@
 
 (* $Id$ *)
 
+module C = NCic
+module Ref = NReference
+
 exception CircularDependency of string Lazy.t;;
 exception ObjectNotFound of string Lazy.t;;
 exception BadDependency of string Lazy.t;;
+exception BadConstraint of string Lazy.t;;
+
+let type0 = []
+
+let le_constraints = ref [] (* strict,a,b *)
+
+let rec le_path_uri avoid strict a b =
+ (not strict && NUri.eq a b) ||
+ List.exists
+  (fun (strict',x,y) ->
+     NUri.eq y b && not (List.exists (NUri.eq x) avoid) &&
+       le_path_uri (x::avoid) (strict && not strict') a x
+  ) !le_constraints
+;;
+
+let leq_path a b = le_path_uri [b] (fst a) (snd a) b;;
+
+let universe_leq a b = 
+  match a, b with
+  | a,[(false,b)] -> List.for_all (fun a -> leq_path a b) a
+  | _,_ ->
+     raise (BadConstraint
+      (lazy "trying to check if a universe is less or equal than an inferred universe"))
+
+let universe_eq a b = universe_leq b a && universe_leq a b
+
+let pp_constraint b x y =  
+  NUri.name_of_uri x ^ (if b then " < " else " <= ") ^ NUri.name_of_uri y
+;;
+
+let pp_constraints () =
+  String.concat "\n" (List.map (fun (b,x,y) -> pp_constraint b x y) !le_constraints)
+;;
+
+let add_constraint strict a b = 
+  match a,b with
+  | [false,a2],[false,b2] -> 
+      if not (le_path_uri [] strict a2 b2) then (
+        if le_path_uri [] (not strict) b2 a2 then
+         (raise(BadConstraint(lazy("universe inconsistency adding "^pp_constraint strict a2 b2
+           ^ " to:\n" ^ pp_constraints ()))));
+        le_constraints := (strict,a2,b2) :: !le_constraints)
+  | _ -> raise (BadConstraint
+          (lazy "trying to add a constraint on an inferred universe"))
+;;
 
 let typecheck_obj,already_set = ref (fun _ -> assert false), ref false;;
 let set_typecheck_obj f =
@@ -81,44 +129,67 @@ let get_checked_obj u =
     | `Exn e -> raise e
 ;;
 
+let get_checked_decl = function
+  | Ref.Ref (uri, Ref.Decl) ->
+      (match get_checked_obj uri with
+      | _,height,_,_, C.Constant (rlv,name,None,ty,att) ->
+          rlv,name,ty,att,height
+      | _,_,_,_, C.Constant (_,_,Some _,_,_) ->
+          prerr_endline "get_checked_decl on a definition"; assert false
+      | _ -> prerr_endline "get_checked_decl on a non decl 2"; assert false)
+  | _ -> prerr_endline "get_checked_decl on a non decl"; assert false
+;;
+
 let get_checked_def = function
-  | NReference.Ref (uri, NReference.Def _) ->
+  | Ref.Ref (uri, Ref.Def _) ->
       (match get_checked_obj uri with
-      | _,height,_,_, NCic.Constant (rlv,name,Some bo,ty,att) ->
+      | _,height,_,_, C.Constant (rlv,name,Some bo,ty,att) ->
           rlv,name,bo,ty,att,height
-      | _,_,_,_, NCic.Constant (_,_,None,_,_) ->
+      | _,_,_,_, C.Constant (_,_,None,_,_) ->
           prerr_endline "get_checked_def on an axiom"; assert false
       | _ -> prerr_endline "get_checked_def on a non def 2"; assert false)
   | _ -> prerr_endline "get_checked_def on a non def"; assert false
 ;;
 
 let get_checked_indtys = function
-  | NReference.Ref (uri, (NReference.Ind (_,n)|NReference.Con (n,_))) ->
+  | Ref.Ref (uri, (Ref.Ind (_,n,_)|Ref.Con (n,_,_))) ->
       (match get_checked_obj uri with
-      | _,_,_,_, NCic.Inductive (inductive,leftno,tys,att) ->
+      | _,_,_,_, C.Inductive (inductive,leftno,tys,att) ->
         inductive,leftno,tys,att,n
       | _ -> prerr_endline "get_checked_indtys on a non ind 2"; assert false)
   | _ -> prerr_endline "get_checked_indtys on a non ind"; assert false
 ;;
 
 let get_checked_fixes_or_cofixes = function
-  | NReference.Ref (uri, (NReference.Fix (fixno,_,_)|NReference.CoFix fixno))->
+  | Ref.Ref (uri, (Ref.Fix _|Ref.CoFix _))->
       (match get_checked_obj uri with
-      | _,height,_,_, NCic.Fixpoint (_,funcs,att) ->
+      | _,height,_,_, C.Fixpoint (_,funcs,att) ->
          funcs, att, height
       | _ ->prerr_endline "get_checked_(co)fix on a non (co)fix 2";assert false)
-  | r -> prerr_endline ("get_checked_(co)fix on " ^ NReference.string_of_reference r); assert false
+  | _ -> prerr_endline "get_checked_(co)fix on a non (co)fix"; assert false
 ;;
 
-let get_indty_leftno = function 
-  | NReference.Ref (uri, NReference.Ind _) 
-  | NReference.Ref (uri, NReference.Con _) ->
-      (match get_checked_obj uri with
-      | _,_,_,_, NCic.Inductive (_,left,_,_) -> left
-      | _ ->prerr_endline "get_indty_leftno called on a non ind 2";assert false)
-  | _ -> prerr_endline "get_indty_leftno called on a non indty";assert false
+let get_relevance (Ref.Ref (_, infos) as r) =
+  match infos with
+     Ref.Def _ -> let res,_,_,_,_,_ = get_checked_def r in res
+   | Ref.Decl -> let res,_,_,_,_ = get_checked_decl r in res
+   | Ref.Ind _ ->
+       let _,_,tl,_,n = get_checked_indtys r in
+       let res,_,_,_ = List.nth tl n in
+         res
+    | Ref.Con (_,i,_) ->
+       let _,_,tl,_,n = get_checked_indtys r in
+       let _,_,_,cl = List.nth tl n in
+       let res,_,_ = List.nth cl (i - 1) in
+         res
+    | Ref.Fix (fixno,_,_)
+    | Ref.CoFix fixno ->
+        let fl,_,_ = get_checked_fixes_or_cofixes r in
+        let res,_,_,_,_ = List.nth fl fixno in
+          res
 ;;
 
+
 let invalidate _ = 
   assert (!frozen_list = []);
   NUri.UriHash.clear cache