implemented lazy disambiguation of tactics arguments, when those

[helm.git] / helm / ocaml / tactics / proofEngineTypes.ml

diff --git a/helm/ocaml/tactics/proofEngineTypes.ml b/helm/ocaml/tactics/proofEngineTypes.ml
index 9e92a076c47e46aa6a920d177127a09469df413a..2e25e4a057389f7149bfa64334bcbefdca615d84 100644 (file)
--- a/helm/ocaml/tactics/proofEngineTypes.ml
+++ b/helm/ocaml/tactics/proofEngineTypes.ml
@@ -56,9 +56,31 @@ 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