From 62f0bb97b019081e286f7eb5eafe62f09519349e Mon Sep 17 00:00:00 2001
From: Alex Orlenko <zxteam@protonmail.com>
Date: Fri, 5 Apr 2024 12:03:40 +0100
Subject: [PATCH] Add `Lua::create_ser_any_userdata()` function

---
 src/lua.rs     | 15 +++++++++++++++
 tests/serde.rs | 15 +++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/src/lua.rs b/src/lua.rs
index 6691bf0..35bdf4b 100644
--- a/src/lua.rs
+++ b/src/lua.rs
@@ -1746,6 +1746,21 @@ impl Lua {
         unsafe { self.make_any_userdata(UserDataCell::new(data)) }
     }
 
+    /// Creates a Lua userdata object from a custom serializable Rust type.
+    ///
+    /// See [`Lua::create_any_userdata()`] for more details.
+    ///
+    /// Requires `feature = "serialize"`
+    #[cfg(feature = "serialize")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "serialize")))]
+    #[inline]
+    pub fn create_ser_any_userdata<T>(&self, data: T) -> Result<AnyUserData>
+    where
+        T: Serialize + MaybeSend + 'static,
+    {
+        unsafe { self.make_any_userdata(UserDataCell::new_ser(data)) }
+    }
+
     /// Registers a custom Rust type in Lua to use in userdata objects.
     ///
     /// This methods provides a way to add fields or methods to userdata objects of a type `T`.
diff --git a/tests/serde.rs b/tests/serde.rs
index 9c287a4..1eabf42 100644
--- a/tests/serde.rs
+++ b/tests/serde.rs
@@ -115,6 +115,21 @@ fn test_serialize_in_scope() -> LuaResult<()> {
     Ok(())
 }
 
+#[test]
+fn test_serialize_any_userdata() -> Result<(), Box<dyn StdError>> {
+    let lua = Lua::new();
+
+    let json_val = serde_json::json!({
+        "a": 1,
+        "b": "test",
+    });
+    let json_ud = lua.create_ser_any_userdata(json_val)?;
+    let json_str = serde_json::to_string_pretty(&json_ud)?;
+    assert_eq!(json_str, "{\n  \"a\": 1,\n  \"b\": \"test\"\n}");
+
+    Ok(())
+}
+
 #[test]
 fn test_serialize_failure() -> Result<(), Box<dyn StdError>> {
     #[derive(Serialize)]