X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_tactics%2FnTactics.ml;h=8887175b4d95a77cf969680b8ce6e9073be9d687;hb=ddd6560f4e70ec3306d223738a441d5f1dd3eac9;hp=fc0a8013cca3b09deb1b8ab9703499dc0f66d4f5;hpb=f4c17198d8afe7c8cd62dbab527d08902d891491;p=helm.git

diff --git a/helm/software/components/ng_tactics/nTactics.ml b/helm/software/components/ng_tactics/nTactics.ml
index fc0a8013c..8887175b4 100644
--- a/helm/software/components/ng_tactics/nTactics.ml
+++ b/helm/software/components/ng_tactics/nTactics.ml
@@ -87,6 +87,25 @@ let pos_tac i_s status =
    status#set_stack gstatus
 ;;
 
+let case_tac lab status =
+  let gstatus = 
+    match status#stack with
+    | [] -> assert false
+    | ([ loc ], t, [],`BranchTag) :: (g', t', k', tag) :: s
+      when is_fresh loc ->
+        let l_js = List.filter 
+                     (fun curloc -> 
+                        let _,_,metasenv,_,_ = status#obj in
+                        match NCicUtils.lookup_meta (goal_of_loc curloc) metasenv with
+                            Some s,_,_ when s = lab -> true
+                          | _ -> false) ([loc] @+ g') in
+          ((l_js, t , [],`BranchTag)
+           :: (([ loc ] @+ g') @- l_js, t', k', tag) :: s)
+    | _ -> fail (lazy "can't use relative positioning here")
+  in
+   status#set_stack gstatus
+;;
+
 let wildcard_tac status =
   let gstatus = 
     match status#stack with
@@ -157,6 +176,7 @@ let block_tac l status =
   List.fold_left (fun status tac -> tac status) status l
 ;;
 
+
 let compare_statuses ~past ~present =
  let _,_,past,_,_ = past#obj in 
  let _,_,present,_,_ = present#obj in 
@@ -228,7 +248,16 @@ let distribute_tac tac (status : #tac_status) =
        ((status#set_stack stack)#set_obj(sn:>lowtac_status)#obj)#set_estatus sn
 ;;
 
-let atomic_tac htac = distribute_tac (exec htac) ;;
+let atomic_tac htac : #tac_status as 'a -> 'a = distribute_tac (exec htac) ;;
+
+let repeat_tac t s = 
+  let rec repeat t (status : #tac_status as 'a) : 'a = 
+    try repeat t (t status)
+    with NTacStatus.Error _ -> status
+  in
+    atomic_tac (repeat t) s
+;;
+
 
 let try_tac tac status =
   try
@@ -293,7 +322,7 @@ let clear_tac names =
 
 let generalize0_tac args =
  if args = [] then id_tac
- else exact_tac ("",0,Ast.Appl (Ast.Implicit :: args))
+ else exact_tac ("",0,Ast.Appl (Ast.Implicit `JustOne :: args))
 ;;
 
 let select0_tac ~where:(wanted,hyps,where) ~job  =
@@ -392,6 +421,19 @@ let generalize_tac ~where =
    ) s) ]
 ;;
 
+let cut_tac t = 
+ block_tac [ 
+  exact_tac ("",0, Ast.Appl [Ast.Implicit `JustOne; Ast.Implicit `JustOne]);
+  branch_tac;
+   pos_tac [2]; exact_tac t;
+   shift_tac; pos_tac [1]; skip_tac;
+  merge_tac ]
+;;
+
+let lapply_tac (s,n,t) = 
+ exact_tac (s,n, Ast.Appl [Ast.Implicit `JustOne; t])
+;;
+
 let reduce_tac ~reduction ~where =
   let change status t = 
     match reduction with
@@ -419,11 +461,15 @@ let change_tac ~where ~with_what =
 let letin_tac ~where ~what:(_,_,w) name =
  block_tac [
   select_tac ~where ~job:(`Substexpand 1) true;
-  exact_tac ("",0,Ast.LetIn((Ast.Ident (name,None),None),w,Ast.Implicit));
+  exact_tac
+   ("",0,Ast.LetIn((Ast.Ident (name,None),None),w,Ast.Implicit `JustOne));
  ]
 ;;
 
-let apply_tac = exact_tac;;
+let apply_tac (s,n,t) = 
+  let t = Ast.Appl [t; Ast.Implicit `Vector] in
+  exact_tac (s,n,t)
+;;
 
 type indtyinfo = {
         rightno: int;
@@ -435,12 +481,13 @@ type indtyinfo = {
  }
 ;;
 
-let analyze_indty_tac ~what indtyref = distribute_tac (fun status goal ->
+let analyze_indty_tac ~what indtyref =
+ distribute_tac (fun status goal ->
   let goalty = get_goalty status goal in
   let status, what = disambiguate status what None (ctx_of goalty) in
   let status, ty_what = typeof status (ctx_of what) what in 
   let status, (r,consno,lefts,rights) = analyse_indty status ty_what in
-  let leftno = List.length rights in
+  let leftno = List.length lefts in
   let rightno = List.length rights in
   indtyref := Some { 
     rightno = rightno; leftno = leftno; consno = consno;
@@ -449,57 +496,63 @@ let analyze_indty_tac ~what indtyref = distribute_tac (fun status goal ->
   exec id_tac status goal)
 ;;
 
-let elim_tac ~what ~where = 
+let sort_of_goal_tac sortref = distribute_tac (fun status goal ->
+  let goalty = get_goalty status goal in
+  let status,sort = typeof status (ctx_of goalty) goalty in
+  let sort = fix_sorts sort in
+  let status, sort = term_of_cic_term status sort (ctx_of goalty) in
+   sortref := sort;
+   status)
+;;
+
+let elim_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 None in
-  let compute_goal_sort_tac = distribute_tac (fun status goal ->
-    let goalty = get_goalty status goal in
-    let status, goalsort = typeof status (ctx_of goalty) goalty in
-    sort := Some goalsort;
-    exec id_tac status goal)
-  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);
-    compute_goal_sort_tac;
+    sort_of_goal_tac sort;
     (fun status ->
-     let sort = HExtlib.unopt !sort in
      let ity = HExtlib.unopt !indtyinfo in
      let NReference.Ref (uri, _) = ity.reference in
-     let status, sort = term_of_cic_term status sort (ctx_of sort) in
-     let name = NUri.name_of_uri uri ^
-      match sort with
-       | NCic.Sort NCic.Prop -> "_ind"
-       | NCic.Sort _ -> "_rect"
-       | _ -> assert false 
+     let name = 
+       NUri.name_of_uri uri ^ "_" ^
+        snd (NCicElim.ast_of_sort 
+          (match !sort with NCic.Sort x -> x | _ -> assert false))
      in
-     let holes = 
-       HExtlib.mk_list Ast.Implicit (ity.leftno+1+ ity.consno + ity.rightno) in
      let eliminator = 
        let _,_,w = what in
-       Ast.Appl(Ast.Ident(name,None)::holes @ [ w ])
+       Ast.Appl [ Ast.Ident (name,None) ; Ast.Implicit `Vector ; w ]
      in
      exact_tac ("",0,eliminator) status) ]) 
 ;;
 
-let rewrite_tac ~dir ~what:(_,_,what) ~where =
+let rewrite_tac ~dir ~what:(_,_,what) ~where status =
+ let sortref = ref (NCic.Rel 1) in
+ let status = sort_of_goal_tac sortref status in
+ let suffix = "_" ^ snd (NCicElim.ast_of_sort 
+   (match !sortref with NCic.Sort x -> x | _ -> assert false))
+ in
  let name =
-  match dir with `LeftToRight -> "eq_elim_r" | `RightToLeft -> "eq_ind"
+  match dir with
+     `LeftToRight -> "eq" ^ suffix ^ "_r"
+   | `RightToLeft -> "eq" ^ suffix
  in
   block_tac
    [ select_tac ~where ~job:(`Substexpand 1) true;
      exact_tac
       ("",0,
-       Ast.Appl(Ast.Ident(name,None)::HExtlib.mk_list Ast.Implicit 5 @
-        [what]))]
+       Ast.Appl(Ast.Ident(name,None)::HExtlib.mk_list (Ast.Implicit `JustOne) 5@
+        [what]))] status
 ;;
 
 let intro_tac name =
  block_tac
   [ exact_tac
      ("",0,(Ast.Binder (`Lambda,
-      (Ast.Ident (name,None),None),Ast.Implicit)));
+      (Ast.Ident (name,None),None),Ast.Implicit `JustOne)));
     if name = "_" then clear_tac [name] else id_tac ]
 ;;
 
@@ -518,7 +571,8 @@ let cases ~what status goal =
  instantiate status goal t
 ;;
 
-let cases_tac ~what ~where = 
+let cases_tac ~what:(txt,len,what) ~where = 
+  let what = txt, len, Ast.Appl [what; Ast.Implicit `Vector] in
   let indtyinfo = ref None in
   atomic_tac 
    (block_tac [
@@ -537,6 +591,21 @@ let case1_tac name =
              if name = "_clearme" then clear_tac ["_clearme"] else id_tac ]
 ;;
 
+let constructor ?(num=1) ~args status goal = 
+  if num < 1 then fail (lazy "constructor numbers begin with 1");
+  let gty = get_goalty status goal in
+  let status, (r,_,_,_) = analyse_indty status gty in
+  let ref = NReference.mk_constructor num r in
+  let t = 
+    if args = [] then Ast.NRef ref else
+    Ast.Appl (HExtlib.list_concat ~sep:[Ast.Implicit `Vector]
+      ([Ast.NRef ref] :: List.map (fun _,_,x -> [x]) args))
+  in
+  exec (apply_tac ("",0,t)) status goal
+;;
+
+let constructor_tac ?num ~args = distribute_tac (constructor ?num ~args);;
+
 let assert0_tac (hyps,concl) = distribute_tac (fun status goal ->
  let gty = get_goalty status goal in
  let eq status ctx t1 t2 =
@@ -601,13 +670,16 @@ let auto ~params:(l,_) status goal =
         (status, (t,ty) :: l))
       (status,[]) l
   in
-  let pt, metasenv, subst = 
-    Paramod.nparamod status metasenv subst (ctx_of gty) (NCic.Rel ~-1,t) l 
-  in      
-  let status = status#set_obj (n,h,metasenv,subst,o) in
-  instantiate status goal (NTacStatus.mk_cic_term (ctx_of gty) pt)
+  match
+    NCicParamod.nparamod status metasenv subst (ctx_of gty) (NCic.Rel ~-1,t) l 
+  with
+  | [] -> raise (NTacStatus.Error (lazy "no proof found",None))
+  | (pt, metasenv, subst)::_ -> 
+      let status = status#set_obj (n,h,metasenv,subst,o) in
+      instantiate status goal (NTacStatus.mk_cic_term (ctx_of gty) pt)
 ;;
 
 let auto_tac ~params status =
   distribute_tac (auto ~params) status
 ;;
+