X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_tactics%2FnTactics.ml;h=93d8c965c41e1b6181cf29d7f2808e20265992bc;hb=a0b7db9844126ebcdf4b5dbb586514854cef5d93;hp=f5ae3a721e4880a955d4be5463252cf4423e2a36;hpb=12f96bd48b460d06f9858a334ee7c52d6831712f;p=helm.git

diff --git a/helm/software/components/ng_tactics/nTactics.ml b/helm/software/components/ng_tactics/nTactics.ml
index f5ae3a721..93d8c965c 100644
--- a/helm/software/components/ng_tactics/nTactics.ml
+++ b/helm/software/components/ng_tactics/nTactics.ml
@@ -22,7 +22,7 @@ module Ast = CicNotationPt
 
 let id_tac status = status ;;
 let print_tac print_status message status = 
-  if print_status then pp_status status;
+  if print_status then pp_tac_status status;
   prerr_endline message; 
   status
 ;;
@@ -261,10 +261,13 @@ let repeat_tac t s =
 
 
 let try_tac tac status =
+ let try_tac status =
   try
     tac status
   with NTacStatus.Error _ ->
     status
+ in
+  atomic_tac try_tac status
 ;;
 
 let first_tac tacl status =
@@ -371,7 +374,7 @@ let select0_tac ~where:(wanted,hyps,where) ~job  =
    let status, instance = 
      mk_meta status newgoalctx (`Decl newgoalty) `IsTerm
    in
-   instantiate status goal instance)
+   instantiate ~refine:false status goal instance)
 ;;
 
 let select_tac ~where ~job move_down_hyps = 
@@ -420,12 +423,12 @@ let generalize_tac ~where =
 ;;
 
 let cut_tac t = 
- block_tac [ 
+ atomic_tac (block_tac [ 
   exact_tac ("",0, Ast.Appl [Ast.Implicit `JustOne; Ast.Implicit `JustOne]);
   branch_tac;
    pos_tac [3]; exact_tac t;
    shift_tac; pos_tac [2]; skip_tac;
-  merge_tac ]
+  merge_tac ])
 ;;
 
 let lapply_tac (s,n,t) = 
@@ -473,8 +476,6 @@ type indtyinfo = {
         rightno: int;
         leftno: int;
         consno: int;
-        lefts: NCic.term list;
-        rights: NCic.term list;
         reference: NReference.reference;
  }
 ;;
@@ -482,7 +483,7 @@ type indtyinfo = {
 let ref_of_indtyinfo iti = iti.reference;;
 
 let analyze_indty_tac ~what indtyref =
- distribute_tac (fun status goal ->
+ distribute_tac (fun (status as orig_status) goal ->
   let goalty = get_goalty status goal in
   let status, what = disambiguate status (ctx_of goalty) what None in
   let status, ty_what = typeof status (ctx_of what) what in 
@@ -490,10 +491,9 @@ let analyze_indty_tac ~what indtyref =
   let leftno = List.length lefts in
   let rightno = List.length rights in
   indtyref := Some { 
-    rightno = rightno; leftno = leftno; consno = consno;
-    lefts = lefts; rights = rights; reference = r;
+    rightno = rightno; leftno = leftno; consno = consno; reference = r;
   };
-  exec id_tac status goal)
+  exec id_tac orig_status goal)
 ;;
 
 let sort_of_goal_tac sortref = distribute_tac (fun status goal ->
@@ -540,8 +540,9 @@ let rewrite_tac ~dir ~what:(_,_,what) ~where status =
      `LeftToRight -> "eq" ^ suffix ^ "_r"
    | `RightToLeft -> "eq" ^ suffix
  in
+ let what = Ast.Appl [what; Ast.Implicit `Vector] in
   block_tac
-   [ select_tac ~where ~job:(`Substexpand 1) true;
+   [ select_tac ~where ~job:(`Substexpand 2) true;
      exact_tac
       ("",0,
        Ast.Appl(Ast.Ident(name,None)::HExtlib.mk_list (Ast.Implicit `JustOne) 5@
@@ -556,6 +557,25 @@ let intro_tac name =
     if name = "_" then clear_tac [name] else id_tac ]
 ;;
 
+let name_counter = ref 0;;
+let intros_tac ?names_ref names s =
+  let names_ref, prefix = 
+    match names_ref with | None -> ref [], "__" | Some r -> r, "H" 
+  in
+  if names = [] then
+   repeat_tac 
+     (fun s ->
+        incr name_counter;
+        (* TODO: generate better names *)
+        let name = prefix ^ string_of_int !name_counter in
+        let s = intro_tac name s in 
+        names_ref := !names_ref @ [name];
+        s)
+     s
+   else
+     block_tac (List.map intro_tac names) s
+;;
+
 let cases ~what status goal =
  let gty = get_goalty status goal in
  let status, what = disambiguate status (ctx_of gty) what None in
@@ -652,3 +672,26 @@ let assert_tac seqs status =
      ) status
 ;;
 
+let inversion_tac ~what:(txt,len,what) ~where = 
+  let what = txt, len, Ast.Appl [what; Ast.Implicit `Vector] in
+  let indtyinfo = ref None in
+  let sort = ref (NCic.Rel 1) in
+  atomic_tac (block_tac [
+    analyze_indty_tac ~what indtyinfo;    
+    (fun s -> select_tac 
+      ~where ~job:(`Substexpand ((HExtlib.unopt !indtyinfo).rightno+1)) true s);
+    sort_of_goal_tac sort;
+    (fun status ->
+     let ity = HExtlib.unopt !indtyinfo in
+     let NReference.Ref (uri, _) = ity.reference in
+     let name = 
+       NUri.name_of_uri uri ^ "_inv_" ^
+        snd (NCicElim.ast_of_sort 
+          (match !sort with NCic.Sort x -> x | _ -> assert false))
+     in
+     let eliminator = 
+       let _,_,w = what in
+       Ast.Appl [ Ast.Ident (name,None) ; Ast.Implicit `Vector ; w ]
+     in
+     exact_tac ("",0,eliminator) status) ]) 
+;;