mirror of
https://github.com/ThePhD/sol2.git
synced 2024-03-22 13:10:44 +08:00
38 lines
727 B
C++
38 lines
727 B
C++
#define SOL_ALL_SAFETIES_ON 1
|
|
#include <sol/sol.hpp>
|
|
|
|
#include <string>
|
|
#include <iostream>
|
|
|
|
int main () {
|
|
sol::state lua;
|
|
lua.open_libraries(sol::lib::base);
|
|
|
|
lua.script(R"(
|
|
obj = "please don't let me die";
|
|
)");
|
|
|
|
sol::object keep_alive = lua["obj"];
|
|
lua.script(R"(
|
|
obj = nil;
|
|
function say(msg)
|
|
print(msg)
|
|
end
|
|
)");
|
|
|
|
lua.collect_garbage();
|
|
|
|
lua["say"](lua["obj"]);
|
|
// still accessible here and still alive in Lua
|
|
// even though the name was cleared
|
|
std::string message = keep_alive.as<std::string>();
|
|
std::cout << message << std::endl;
|
|
|
|
// Can be pushed back into Lua as an argument
|
|
// or set to a new name,
|
|
// whatever you like!
|
|
lua["say"](keep_alive);
|
|
|
|
return 0;
|
|
}
|