X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FproofEngineTypes.ml;h=58dafd1a674441e25a8a933dc82a031fef1a5fea;hb=4167cea65ca58897d1a3dbb81ff95de5074700cc;hp=9e92a076c47e46aa6a920d177127a09469df413a;hpb=80fc89019bcb7fb7e0e1fb8bb111b708be49d19f;p=helm.git

diff --git a/helm/ocaml/tactics/proofEngineTypes.ml b/helm/ocaml/tactics/proofEngineTypes.ml
index 9e92a076c..58dafd1a6 100644
--- a/helm/ocaml/tactics/proofEngineTypes.ml
+++ b/helm/ocaml/tactics/proofEngineTypes.ml
@@ -56,12 +56,34 @@ type tactic = status -> proof * goal list
   (** creates an opaque tactic from a status->proof*goal list function *)
 let mk_tactic t = t
 
- (** what, hypothesis patterns, conclusion pattern *)
-type pattern = Cic.term option * (string * Cic.term) list * Cic.term
-let conclusion_pattern t = t,[],Cic.Implicit (Some `Hole)
+type reduction = Cic.context -> Cic.term -> Cic.term
+
+type lazy_term =
+  Cic.context -> Cic.metasenv -> CicUniv.universe_graph ->
+    Cic.term * Cic.metasenv * CicUniv.universe_graph
+
+let const_lazy_term t =
+  (fun _ metasenv ugraph -> t, metasenv, ugraph)
+
+type lazy_reduction =
+  Cic.context -> Cic.metasenv -> CicUniv.universe_graph ->
+    reduction * Cic.metasenv * CicUniv.universe_graph
+
+let const_lazy_reduction red =
+  (fun _ metasenv ugraph -> red, metasenv, ugraph)
+
+type pattern = lazy_term option * (string * Cic.term) list * Cic.term
+
+let conclusion_pattern t =
+  let t' = 
+    match t with
+    | None -> None
+    | Some t -> Some (fun _ m u -> t, m, u)
+  in
+  t',[],Cic.Implicit (Some `Hole)
 
   (** tactic failure *)
-exception Fail of string
+exception Fail of string Lazy.t
 
   (** 
     calls the opaque tactic on the status, restoring the original 
@@ -73,3 +95,6 @@ let apply_tactic t status =
   (** constraint: the returned value will always be constructed by Cic.Name **)
 type mk_fresh_name_type =
  Cic.metasenv -> Cic.context -> Cic.name -> typ:Cic.term -> Cic.name
+
+let goals_of_proof (_,metasenv,_,_) = List.map (fun (g,_,_) -> g) metasenv
+