programs as invokable images

1 files changed, 9 insertions, 6 deletions

diff --git a/lib/protocols/Evaluator.mli b/lib/protocols/Evaluator.mli
index 04b3612..934c5e3 100644
--- a/lib/protocols/Evaluator.mli
+++ b/lib/protocols/Evaluator.mli
@@ -1,18 +1,21 @@
 type t
+type kind = ..
 
-(** [within] is the directory the program's paths resolve against: the
-    branch state a stored program was read through, or whatever part of
-    the tree a caller hands over. *)
 class type implementation = object
-  method invoke : Handle.t -> within:Handle.t -> (Handle.t, Concepts.Condition.condition) result
+  method parse : string -> (kind, Concepts.Condition.condition) result
+
+  method eval :
+    kind -> Handle.t list -> within:Handle.t -> (Handle.t, Concepts.Condition.condition) result
 end
 
 val make : #implementation -> Handle.protocol
 val from : Handle.t -> t Handle.interface option
 val require : Handle.t -> (t Handle.interface, Concepts.Condition.condition) result
+val parse : t Handle.interface -> string -> (kind, Concepts.Condition.condition) result
 
-val invoke :
+val eval :
   t Handle.interface ->
-  Handle.t ->
+  kind ->
+  Handle.t list ->
   within:Handle.t ->
   (Handle.t, Concepts.Condition.condition) result