Function call_it

examples/source/indirect_function_calls.cpp:6–36

#include <iostream>

sol::variadic_results call_it(sol::object function_name,
     sol::variadic_args args, sol::this_environment env,
     sol::this_state L) {
	sol::state_view lua = L;
	// default to global table as environment
	sol::environment function_environment = lua.globals();
	if (env) {
		// if we have an environment, use that instead
		function_environment = env;
	}

	// get and call the function
	sol::protected_function pf
	     = function_environment[function_name];
	sol::protected_function_result res = pf(args);

	//
	sol::variadic_results results;
	if (!res.valid()) {
		// something went wrong: log/crash/whatever
		return results;
	}
	int returncount = res.return_count();
	for (int i = 0; i < returncount; i++) {
		// pass offset to get the object that was returned
		sol::object obj = res.get<sol::object>(i);
		results.push_back(obj);
	}
	// return the results
	return results;
}

int main(int, char*[]) {
	std::cout << "=== indirect function calls ===" << std::endl;