From 0a9446795bd19a3017482f702df01ebaadadfd48 Mon Sep 17 00:00:00 2001
From: Marcos Magueta <maguetamarcos@gmail.com>
Date: Wed, 9 Sep 2026 22:12:44 -0300
Subject: cursor and context

---
 lib/protocols/Cursor.mli | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 lib/protocols/Cursor.mli

(limited to 'lib/protocols/Cursor.mli')

diff --git a/lib/protocols/Cursor.mli b/lib/protocols/Cursor.mli
new file mode 100644
index 0000000..08c7628
--- /dev/null
+++ b/lib/protocols/Cursor.mli
@@ -0,0 +1,21 @@
+type batch =
+  {tuples: Concepts.Tuple.t BatFingerTree.t; exhausted: bool}
+
+type t
+
+class type implementation = object
+  method fetch : int -> (batch, 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 fetch : t Handle.interface -> int -> (batch, Concepts.Condition.condition) result
+
+val next : t Handle.interface -> (Concepts.Tuple.t option, Concepts.Condition.condition) result
+
+val drain :
+  t Handle.interface ->
+  ?limit:int ->
+  unit ->
+  (Concepts.Tuple.t BatFingerTree.t, Concepts.Condition.condition) result
-- 
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