Function main

examples/source/tutorials/quick_n_dirty/running_lua_code.cpp:7–48

#include <iostream>

int main(int, char*[]) {
	std::cout << "=== running lua code ===" << std::endl;

	{
		std::ofstream out("a_lua_script.lua");
		out << "print('hi from a lua script file')";
	}

	sol::state lua;
	lua.open_libraries(sol::lib::base);

	// load and execute from string
	lua.script("a = 'test'");
	// load and execute from file
	lua.script_file("a_lua_script.lua");

	// run a script, get the result
	int value = lua.script("return 54");
	SOL_ASSERT(value == 54);

	auto bad_code_result = lua.script("123 herp.derp",
	     [](lua_State*, sol::protected_function_result pfr) {
		     // pfr will contain things that went wrong, for
		     // either loading or executing the script Can
		     // throw your own custom error You can also just
		     // return it, and let the call-site handle the
		     // error if necessary.
		     return pfr;
	     });
	// it did not work
	SOL_ASSERT(!bad_code_result.valid());

	// the default handler panics or throws, depending on your
	// settings uncomment for explosions: auto bad_code_result_2
	// = lua.script("bad.code", &sol::script_default_on_error);

	std::cout << std::endl;

	{ std::remove("a_lua_script.lua"); }

	return 0;
}