From 442ae050886eaf731034c15fc5a37d99c74ebcc5 Mon Sep 17 00:00:00 2001
From: Runxi Yu <me@runxiyu.org>
Date: Thu, 13 Mar 2025 22:12:42 +0800
Subject: [PATCH] Add basic types

---
 lmdb/types.ha | 32 ++++++++++++++++++++++++++++++++

diff --git a/lmdb/types.ha b/lmdb/types.ha
new file mode 100644
index 0000000000000000000000000000000000000000..a74543ac2a6a86444838079861d9d29ff1deeb20
--- /dev/null
+++ b/lmdb/types.ha
@@ -0,0 +1,32 @@
+// Opaque structure for navigating through a database
+export type cursor = opaque;
+
+// A handle for an individual database in the DB environment.
+export type dbi = uint;
+
+// Opaque structure for a database environment.
+//
+// A DB environment supports multiple databases, all residing in the same
+// shared-memory map.
+export type env = opaque;
+
+// Opaque structure for a transaction handle.
+//
+// All database operations require a transaction handle. Transactions may be
+// read-only or read-write.
+export type txn = opaque;
+
+// Generic structure used for passing keys and data in and out
+// of the database.
+//
+// Values returned from the database are valid only until a subsequent
+// update operation, or the end of the transaction. Do not modify or
+// free them, they commonly point into the database itself.
+//
+// Key sizes must be between 1 and #mdb_env_get_maxkeysize() inclusive.
+// The same applies to data sizes in databases with the [[DUPSORT]] flag.
+// Other data items can in theory be from 0 to 0xffffffff bytes long.
+export type val = struct {
+	mv_size: size,
+	mv_data: *opaque,
+};

-- 
2.48.1