X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FproofEngineTypes.ml;h=2e25e4a057389f7149bfa64334bcbefdca615d84;hb=28ac70d3f475442cda4ef30e0e9c0e6d012b2527;hp=7d1a53d73230862158a1a44570f84b4a20437fbc;hpb=abd9e5cfa8e7b6923e0664a4813a0a842f5c4e76;p=helm.git

diff --git a/helm/ocaml/tactics/proofEngineTypes.ml b/helm/ocaml/tactics/proofEngineTypes.ml
index 7d1a53d73..2e25e4a05 100644
--- a/helm/ocaml/tactics/proofEngineTypes.ml
+++ b/helm/ocaml/tactics/proofEngineTypes.ml
@@ -56,8 +56,31 @@ type tactic = status -> proof * goal list
   (** creates an opaque tactic from a status->proof*goal list function *)
 let mk_tactic t = t
 
-type pattern = (string * Cic.term) list * Cic.term option
-let goal_pattern = [],None
+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