h2-mod/deps/sol2/examples/source/require.cpp
2024-03-07 03:33:59 -05:00

54 lines
1.1 KiB
C++

#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>
#include <iostream>
struct some_class {
int bark = 2012;
};
sol::table open_mylib(sol::this_state s) {
sol::state_view lua(s);
sol::table module = lua.create_table();
module["func"] = []() {
/* super cool function here */
return 2;
};
// register a class too
module.new_usertype<some_class>(
"some_class", "bark", &some_class::bark);
return module;
}
int main() {
std::cout << "=== require ===" << std::endl;
sol::state lua;
lua.open_libraries(sol::lib::package, sol::lib::base);
// sol::c_call takes functions at the template level
// and turns it into a lua_CFunction
// alternatively, one can use
// sol::c_call<sol::wrap<callable_struct,
// callable_struct{}>> to make the call if it's a constexpr
// struct
lua.require("my_lib",
sol::c_call<decltype(&open_mylib), &open_mylib>);
// run some code against your require'd library
lua.safe_script(R"(
s = my_lib.some_class.new()
assert(my_lib.func() == 2)
s.bark = 20
)");
some_class& s = lua["s"];
SOL_ASSERT(s.bark == 20);
std::cout << "s.bark = " << s.bark << std::endl;
std::cout << std::endl;
return 0;
}