X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_tactics%2FnTacStatus.ml;h=e7d5bb3b532ee1eac2b6fdcee560ad8b58cb61c2;hb=23fa9e70972efb0a805a4fecf6c91103f42408f2;hp=70ddfeaa9499eaccd55636cd0b366e2f719b4656;hpb=fbe9ce0580aa8248b839b8512f822d617514091b;p=helm.git

diff --git a/helm/software/components/ng_tactics/nTacStatus.ml b/helm/software/components/ng_tactics/nTacStatus.ml
index 70ddfeaa9..e7d5bb3b5 100644
--- a/helm/software/components/ng_tactics/nTacStatus.ml
+++ b/helm/software/components/ng_tactics/nTacStatus.ml
@@ -31,24 +31,34 @@ let wrap fname f x =
   | NCicMetaSubst.MetaSubstFailure _ as exn -> fail ~exn (lazy fname)
 ;;
 
+class type g_pstatus =
+ object
+  inherit NEstatus.g_status
+  method obj: NCic.obj
+ end
+
 class pstatus =
  fun (o: NCic.obj) ->
-  object
+ object (self)
    inherit NEstatus.status
    val obj = o
    method obj = obj
    method set_obj o = {< obj = o >}
+   method set_pstatus : 'status. #g_pstatus as 'status -> 'self
+   = fun o -> (self#set_estatus o)#set_obj o#obj
   end
 
 type tactic_term = CicNotationPt.term Disambiguate.disambiguator_input
 type tactic_pattern = GrafiteAst.npattern Disambiguate.disambiguator_input
 
-let pp_status status = 
-  pp (lazy (NCicPp.ppobj status#obj))
+let pp_tac_status status = 
+  prerr_endline (NCicPp.ppobj status#obj);
+  prerr_endline ("STACK:\n" ^ Continuationals.Stack.pp status#stack)
 ;;
 
 type cic_term = NCic.context * NCic.term
 let ctx_of (c,_) = c ;;
+let mk_cic_term c t = c,t ;;
 
 let ppterm status t =
  let uri,height,metasenv,subst,obj = status#obj in
@@ -73,51 +83,60 @@ let relocate status destination (source,t as orig) =
  pp(lazy("relocate in:\n" ^ ppcontext status destination));
  let rc = 
    if source == destination then status, orig else
-    let u, d, metasenv, subst, o = status#obj in
-    let cons x (a,b) = a, x::b in
-    let rec lcp ctx j i = function
-      | (n1, NCic.Decl t1 as e)::cl1, (n2, NCic.Decl t2)::cl2 ->
+    let _, _, metasenv, subst, _ = status#obj in
+    let rec compute_ops ctx = function (* destination, source *)
+      | (n1, NCic.Decl t1 as e)::cl1 as ex, (n2, NCic.Decl t2)::cl2 ->
           if n1 = n2 && 
              NCicReduction.are_convertible ctx ~subst ~metasenv t1 t2 then
-            cons (NCic.Rel i) (lcp (e::ctx)(j-1) (i-1) (cl1,cl2))
+            compute_ops (e::ctx) (cl1,cl2)
           else
-            j, []
-      | (n1, NCic.Def (b1,t1) as e)::cl1, (n2, NCic.Def (b2,t2))::cl2 ->
+            [ `Delift ctx; `Lift (List.rev ex) ]
+      | (n1, NCic.Def (b1,t1) as e)::cl1 as ex, (n2, NCic.Def (b2,t2))::cl2 ->
           if n1 = n2 && 
              NCicReduction.are_convertible ctx ~subst ~metasenv t1 t2 &&
              NCicReduction.are_convertible ctx ~subst ~metasenv b1 b2 then
-            cons (NCic.Rel i) (lcp (e::ctx)(j-1) (i-1) (cl1,cl2))
+            compute_ops (e::ctx) (cl1,cl2)
           else
-            j, []
-      | (n1, NCic.Def (b1,t1) as e)::cl1, (n2, NCic.Decl t2)::cl2 ->
+            [ `Delift ctx; `Lift (List.rev ex) ]
+      | (n1, NCic.Def (b1,t1) as e)::cl1 as ex, (n2, NCic.Decl t2)::cl2 ->
           if n1 = n2 && 
              NCicReduction.are_convertible ctx ~subst ~metasenv t1 t2 then
-            cons (NCic.Rel i) (lcp (e::ctx)(j-1) (i-1) (cl1,cl2))
+            compute_ops (e::ctx) (cl1,cl2)
           else
-            j, []
-      | (n1, NCic.Decl _)::cl1, (n2, NCic.Def _)::cl2 -> assert false
-      | _::_, [] -> j, []
-      | _ -> 0, []
-    in
-    let shift, lc = 
-      lcp [] (List.length destination) (List.length source) 
-        (List.rev destination, List.rev source)
+            [ `Delift ctx; `Lift (List.rev ex) ]
+      | (n1, NCic.Decl _)::cl1 as ex, (n2, NCic.Def _)::cl2 -> 
+            [ `Delift ctx; `Lift (List.rev ex) ]
+      | _::_ as ex, [] -> [ `Lift (List.rev ex) ]
+      | [], _::_ -> [ `Delift ctx ]
+      | [],[] -> []
     in
-    let lc = (shift,NCic.Ctx (List.rev lc)) in
-    pp(lazy("delifting as " ^ 
-      NCicPp.ppterm ~metasenv ~subst ~context:source 
-       (NCic.Meta (0,lc))));
-    let (metasenv, subst), t =
-      NCicMetaSubst.delift 
-         ~unify:(fun m s c t1 t2 -> 
-           try Some (NCicUnification.unify status m s c t1 t2)
-           with 
-            | NCicUnification.UnificationFailure _ 
-            | NCicUnification.Uncertain _ -> None) 
-       metasenv subst source 0 lc t
-    in
-    let status = status#set_obj (u, d, metasenv, subst, o) in
-    status, (destination, t)
+    let ops = compute_ops [] (List.rev destination, List.rev source) in
+    let rec mk_irl i j = if i > j then [] else NCic.Rel i :: mk_irl (i+1) j in
+    List.fold_left 
+     (fun (status, (source,t)) -> function 
+      | `Lift extra_ctx -> 
+           let len = List.length extra_ctx in
+           status, (extra_ctx@source, NCicSubstitution.lift len t)
+      | `Delift ctx -> 
+            let len_ctx = List.length ctx in
+            let irl = mk_irl 1 (List.length ctx) in
+            let lc = List.length source - len_ctx, NCic.Ctx irl in
+            let u, d, metasenv, subst, o = status#obj in
+            pp(lazy("delifting as " ^ 
+              NCicPp.ppterm ~metasenv ~subst ~context:source 
+               (NCic.Meta (0,lc))));
+            let (metasenv, subst), t =
+              NCicMetaSubst.delift 
+                 ~unify:(fun m s c t1 t2 -> 
+                   try Some (NCicUnification.unify status m s c t1 t2)
+                   with 
+                    | NCicUnification.UnificationFailure _ 
+                    | NCicUnification.Uncertain _ -> None) 
+               metasenv subst source 0 lc t
+            in
+            let status = status#set_obj (u, d, metasenv, subst, o) in
+            status, (ctx,t))
+       (status,orig) ops
  in
  pp(lazy("relocated: " ^ ppterm (fst rc) (snd rc)));
  rc
@@ -129,7 +148,7 @@ let term_of_cic_term s t c =
   s, t
 ;;
 
-let disambiguate status t ty context =
+let disambiguate status context t ty =
  let status, expty = 
    match ty with 
    | None -> status, None 
@@ -153,13 +172,13 @@ let typeof status ctx t =
 ;;
 let typeof a b c = wrap "typeof" (typeof a b) c;;
 
-let saturate status (ctx,t) =
+let saturate status ?delta (ctx,t) =
   let n,h,metasenv,subst,k = status#obj in
-  let t, metasenv, args = NCicMetaSubst.saturate metasenv subst ctx t 0 in
+  let t,metasenv,args = NCicMetaSubst.saturate ?delta metasenv subst ctx t 0 in
   let status = status#set_obj (n,h,metasenv,subst,k) in
   status, (ctx,t), List.map (fun x -> ctx,x) args
 ;;
-let saturate a b = wrap "saturate" (saturate a) b;;
+let saturate a ?delta b = wrap "saturate" (saturate a ?delta) b;;
   
 let whd status ?delta ctx t =
   let status, (_,t) = relocate status ctx t in
@@ -184,10 +203,13 @@ let unify status ctx a b =
 ;;
 let unify a b c d = wrap "unify" (unify a b c) d;;
 
-let fix_sorts (ctx,t) =
+let fix_sorts status (ctx,t) =
  let f () =
-  let t = NCicUnification.fix_sorts t in
-   ctx,t
+  let name,height,metasenv,subst,obj = status#obj in
+  let metasenv, t = 
+    NCicUnification.fix_sorts metasenv subst t in
+  let status = status#set_obj (name,height,metasenv,subst,obj) in
+   status, (ctx,t)
  in
   wrap "fix_sorts" f ()
 ;;
@@ -216,26 +238,43 @@ let get_goalty status g =
  with NCicUtils.Meta_not_found _ as exn -> fail ~exn (lazy "get_goalty")
 ;;
 
-let instantiate status i t =
- let _,_,metasenv,_,_ = status#obj in
- let gname, context, gty = List.assoc i metasenv in
- let status, (_,t), (_,ty) = 
-   refine status context t (Some (context,gty)) 
- in
+let get_subst status =
+  let _,_,_,subst,_ = status#obj in subst
+;;
 
+let to_subst status i entry =
  let name,height,metasenv,subst,obj = status#obj in
  let metasenv = List.filter (fun j,_ -> j <> i) metasenv in
- let subst = (i, (gname, context, t, ty)) :: subst in
+ let subst = (i, entry) :: subst in
   status#set_obj (name,height,metasenv,subst,obj)
 ;;
 
-let mk_meta status ?(attrs=[]) ctx bo_or_ty =
+let instantiate status ?refine:(dorefine=true) i t =
+ let _,_,metasenv,_,_ = status#obj in
+ let gname, context, gty = List.assoc i metasenv in
+  if dorefine then
+   let status, (_,t), (_,ty) = refine status context t (Some (context,gty)) in
+    to_subst status i (gname,context,t,ty)
+  else
+   let status,(_,ty) = typeof status context t in
+    to_subst status i (gname,context,snd t,ty)
+;;
+
+let instantiate_with_ast status i t =
+ let _,_,metasenv,_,_ = status#obj in
+ let gname, context, gty = List.assoc i metasenv in
+ let ggty = mk_cic_term context gty in
+ let status, (_,t) = disambiguate status context t (Some ggty) in
+  to_subst status i (gname,context,t,gty)
+;;
+
+let mk_meta status ?(attrs=[]) ctx bo_or_ty kind =
   match bo_or_ty with
   | `Decl ty ->
       let status, (_,ty) = relocate status ctx ty in
       let n,h,metasenv,subst,o = status#obj in
       let metasenv, _, instance, _ = 
-        NCicMetaSubst.mk_meta ~attrs metasenv ctx (`WithType ty)
+        NCicMetaSubst.mk_meta ~attrs metasenv ctx ~with_type:ty kind
       in
       let status = status#set_obj (n,h,metasenv,subst,o) in
       status, (ctx,instance)
@@ -244,7 +283,8 @@ let mk_meta status ?(attrs=[]) ctx bo_or_ty =
       let status, (_,ty) = typeof status ctx bo in
       let n,h,metasenv,subst,o = status#obj in
       let metasenv, metano, instance, _ = 
-        NCicMetaSubst.mk_meta ~attrs metasenv ctx (`WithType ty) in
+        NCicMetaSubst.mk_meta ~attrs metasenv ctx ~with_type:ty kind in
+      let attrs,_,_ = NCicUtils.lookup_meta metano metasenv in
       let metasenv = List.filter (fun j,_ -> j <> metano) metasenv in
       let subst = (metano, (attrs, ctx, bo_, ty)) :: subst in
       let status = status#set_obj (n,h,metasenv,subst,o) in
@@ -252,11 +292,11 @@ let mk_meta status ?(attrs=[]) ctx bo_or_ty =
 ;;
 
 let mk_in_scope status t =
-  mk_meta status ~attrs:[`InScope] (ctx_of t) (`Def t)
+  mk_meta status ~attrs:[`InScope] (ctx_of t) (`Def t) `IsTerm
 ;;
 
 let mk_out_scope n status t = 
-  mk_meta status ~attrs:[`OutScope n] (ctx_of t) (`Def t)
+  mk_meta status ~attrs:[`OutScope n] (ctx_of t) (`Def t) `IsTerm
 ;;
 
 (* the following unification problem will be driven by 
@@ -347,7 +387,7 @@ let select_term
     | NCic.Implicit `Hole, t -> 
         (match wanted with
         | Some wanted -> 
-             let status', wanted = disambiguate status wanted None ctx in
+             let status', wanted = disambiguate status ctx wanted None in
              pp(lazy("wanted: "^ppterm status' wanted));
              let (status',found), t' = match_term status' ctx wanted t in
               if found then status',t' else status,t
@@ -374,7 +414,7 @@ let analyse_indty status ty =
    | _,NCic.Const ref -> ref, []
    | _,NCic.Appl (NCic.Const (NRef.Ref (_,(NRef.Ind _)) as ref) :: args) -> 
          ref, args
-   | _,_ -> fail (lazy ("not an inductive type")) in
+   | _,_ -> fail (lazy ("not an inductive type: " ^ ppterm status ty)) in
  let _,lno,tl,_,i = NCicEnvironment.get_checked_indtys ref in
  let _,_,_,cl = List.nth tl i in
  let consno = List.length cl in
@@ -382,23 +422,39 @@ let analyse_indty status ty =
  status, (ref, consno, left, right)
 ;;
 
-let mk_cic_term c t = c,t ;;
-
 let apply_subst status ctx t =
  let status, (_,t) = relocate status ctx t in
  let _,_,_,subst,_ = status#obj in
   status, (ctx, NCicUntrusted.apply_subst subst ctx t)
 ;;
 
+let apply_subst_context status ~fix_projections ctx =
+ let _,_,_,subst,_ = status#obj in
+  NCicUntrusted.apply_subst_context ~fix_projections subst ctx
+;;
+
+let metas_of_term status (context,t) =
+ let _,_,_,subst,_ = status#obj in
+ NCicUntrusted.metas_of_term subst context t
+;;
+
 (* ============= move this elsewhere ====================*)
 
+class type ['stack] g_status =
+ object
+  inherit g_pstatus
+  method stack: 'stack
+ end
+
 class ['stack] status =
  fun (o: NCic.obj) (s: 'stack) ->
-  object
+ object (self)
    inherit (pstatus o)
    val stack = s
    method stack = stack
    method set_stack s = {< stack = s >}
+   method set_status : 'status. 'stack #g_status as 'status -> 'self
+   = fun o -> (self#set_pstatus o)#set_stack o#stack
   end
 
 class type lowtac_status = [unit] status
@@ -428,6 +484,8 @@ let ppelem = function
   | Dead -> "Dead"
 ;;
 
+let string_of_path l = String.concat "." (List.map ppelem l) ;;
+
 let path_string_of (ctx,t) =
   let len_ctx = List.length ctx in
   let rec aux arity = function
@@ -446,7 +504,9 @@ let path_string_of (ctx,t) =
     | NCic.Const (NReference.Ref (u,_)) -> [Constant (u, arity)]
     | NCic.Match _ -> [Dead]
   in 
-    aux 0 t
+  let path = aux 0 t in
+(*   prerr_endline (string_of_path path); *)
+  path
 ;;
 
 let compare e1 e2 =
@@ -457,7 +517,6 @@ let compare e1 e2 =
   | e1,e2 -> Pervasives.compare e1 e2
 ;;
 
-let string_of_path l = String.concat "." (List.map ppelem l) ;;
 
 end