Lots of changes, not sure if actually safe yet.

* Make Lua Send
* Add Send bounds to (nearly) all instances where userdata and functions are
  passed to Lua
* Add a "scope" method which takes a callback that accepts a `Scope`, and give
  `Scope` the ability to create functions and userdata that are !Send, *and also
  functions that are not even 'static!*.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/ffi.rs b/src/ffi.rs
index 9130afd..dfb2878 100644
--- a/src/ffi.rs
+++ b/src/ffi.rs
@@ -124,6 +124,9 @@ extern "C" {
     pub fn lua_setuservalue(state: *mut lua_State, index: c_int);
     pub fn lua_getuservalue(state: *mut lua_State, index: c_int) -> c_int;
 
+    pub fn lua_getupvalue(state: *mut lua_State, funcindex: c_int, n: c_int) -> *const c_char;
+    pub fn lua_setupvalue(state: *mut lua_State, funcindex: c_int, n: c_int) -> *const c_char;
+
     pub fn lua_settable(state: *mut lua_State, index: c_int);
     pub fn lua_rawset(state: *mut lua_State, index: c_int);
     pub fn lua_setmetatable(state: *mut lua_State, index: c_int);