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