#include <luajit-2.1/lua.h>
#include <luajit-2.1/lauxlib.h>
#include <luajit-2.1/lualib.h>
#include <luajit-2.1/luajit.h>
#include <assert.h>

#define lua_check(x) if(x != LUA_OK) printf("ERR: %s\n", lua_tostring(L, -1))

#define LUA_ARGS lua_State* L
#define arg(type) lua_to##type(L, 1)

int logfn(LUA_ARGS) {
    const char* value = arg(string);

    printf("[LOG] %s\n", value);

    return 0;
}

int main() {
    lua_State* L = luaL_newstate();
    assert(L != NULL);
    luaL_openlibs(L);

    lua_pushcfunction(L, logfn);
    lua_setglobal(L, "log");

    lua_check(luaL_dofile(L, "test.lua"));

    void* data = lua_newuserdata(L);

}