added patch to allow i,j,k: skip and *: skip

[helm.git] / components / tactics / continuationals.ml

diff --git a/components/tactics/continuationals.ml b/components/tactics/continuationals.ml
index eeff9f9bf537783b0e859cfc686cbd0e09aa41b9..044fa45c841cb61e39ecfbe335a14e20937160ec 100644 (file)
--- a/components/tactics/continuationals.ml
+++ b/components/tactics/continuationals.ml
@@ -72,7 +72,8 @@ struct
   let is_open = function _, Open _ -> true | _ -> false
   let close = function n, Open g -> n, Closed g | l -> l
   let filter_open = List.filter is_open
-  let is_fresh = function n, Open _ when n > 0 -> true | _ -> false
+  let is_fresh = 
+    function n, Open _ when n > 0 -> true | _,Closed _ -> true | _ -> false
   let goal_of_loc = function _, Open g | _, Closed g -> g
   let goal_of_switch = function Open g | Closed g -> g
   let switch_of_loc = snd
@@ -175,13 +176,10 @@ sig
   type output_status
 
   type tactic
-
-  val id_tactic : tactic
   val mk_tactic : (input_status -> output_status) -> tactic
   val apply_tactic : tactic -> input_status -> output_status
 
   val goals : output_status -> goal list * goal list (** opened, closed goals *)
-  val set_goals: goal list * goal list -> output_status -> output_status
   val get_stack : input_status -> Stack.t
   val set_stack : Stack.t -> output_status -> output_status
 
@@ -327,26 +325,21 @@ struct
           | [] -> fail (lazy "no more goals to shift")
           | loc :: loc_tl ->
               new_stack
-                (([ loc ], t @+ filter_open g, [],`BranchTag)
+                (([ loc ], t @+ filter_open g @+ k, [],`BranchTag)
                 :: (loc_tl, t', k', tag) :: s))
       | Shift, _ -> fail (lazy "can't shift goals here")
-      | Pos i_s, ([ loc ], [], [],`BranchTag) :: (g', t', k', tag) :: s
+      | Pos i_s, ([ loc ], t, [],`BranchTag) :: (g', t', k', tag) :: s
         when is_fresh loc ->
-          let l_js = List.filter (fun (i, _) -> List.mem i i_s) g' in
-          new_stack
-            ((l_js, [], [],`BranchTag)
-             :: ([ loc ] @+ g' @- l_js, t', k', tag) :: s)
-      | Pos i_s, (g, t, k,`BranchTag) :: (g', t', k', tag) :: s ->
-          let l_js = List.filter (fun (i, _) -> List.mem i i_s) g' in
+          let l_js = List.filter (fun (i, _) -> List.mem i i_s) ([loc] @+ g') in
           new_stack
-            ((l_js, [], [],`BranchTag)
-             :: (g' @- l_js, t' @+ filter_open g, k', tag) :: s)
+            ((l_js, t , [],`BranchTag)
+             :: (([ loc ] @+ g') @- l_js, t', k', tag) :: s)
       | Pos _, _ -> fail (lazy "can't use relative positioning here")
-      | Wildcard, (g, t, k, `BranchTag) :: (g', t', k', tag) :: s
-        when g = [] || is_fresh (List.hd g) ->
-          new_stack
-            ((g', [], [], `BranchTag)
-             :: ([], t' @+ filter_open g @+ k, k', tag) :: s)
+      | Wildcard, ([ loc ] , t, [], `BranchTag) :: (g', t', k', tag) :: s
+          when is_fresh loc ->
+            new_stack
+              (([loc] @+ g', t, [], `BranchTag)
+                :: ([], t', k', tag) :: s)
       | Wildcard, _ -> fail (lazy "can't use wildcard here")
       | Merge, (g, t, k,`BranchTag) :: (g', t', k', tag) :: s ->
           new_stack ((t @+ filter_open g @+ g' @+ k, t', k', tag) :: s)