add PushLuaFunction to functions

functions.go

@@ -302,3 +302,8 @@ func (s *State) GetAllLuaFunctions(names ...string) (map[string]*LuaFunction, er
 	}
 	return funcs, nil
 }
+
+// PushLuaFunction pushes a stored LuaFunction reference onto the stack
+func (s *State) PushLuaFunction(lf *LuaFunction) {
+	C.lua_rawgeti(s.L, C.LUA_REGISTRYINDEX, C.int(lf.ref))
+}

wrapper.go

@@ -191,7 +191,6 @@ func (s *State) GetTableLength(index int) int {
 	return int(C.get_table_length(s.L, C.int(index)))
 }
 
-// Enhanced PushValue with comprehensive type support
 func (s *State) PushValue(v any) error {
 	switch val := v.(type) {
 	case nil:
@@ -206,6 +205,14 @@ func (s *State) PushValue(v any) error {
 		s.PushNumber(val)
 	case string:
 		s.PushString(val)
+	case GoFunction:
+		return s.PushGoFunction(val)
+	case *LuaFunction:
+		C.lua_rawgeti(s.L, C.LUA_REGISTRYINDEX, C.int(val.ref))
+		if val.ref == C.LUA_NOREF || val.ref == C.LUA_REFNIL {
+			s.Pop(1)
+			s.PushNil()
+		}
 	case []int:
 		return s.pushIntSlice(val)
 	case []string: