boost::shared_ptr<Security>
initFirstLegalSecurity(std::string const& class_code, std::string const& sec_code)
{
  boost::shared_ptr<Security> result;

  lua_getglobal(lua_state_, "getSecurityInfo");
  lua_pushstring(lua_state_, class_code.c_str());
  lua_pushstring(lua_state_, sec_code.c_str());

  int result = lua_pcall(lua_state_, 2, 1, 0);
  if(result == 0)
  {
    result = boost::shared_ptr<Security>(new Security(class_code, sec_code));
    int item_idx = lua_gettop(lua_state_);
    lua_pushnil(lua_state_);
    while(lua_next(lua_state_, item_idx) != 0)
    {
      std::string key = lua_tostring(lua_state_, -2);
      if(key == "scale")
        security->setScale(lua_tonumber(lua_state_, -1));
      else if(key == "lot_size")
        security->setLotSize(lua_tonumber(lua_state_, -1));
      else if(key == "min_price_step")
        security->setMinPriceStep(lua_tonumber(lua_state_, -1));
      lua_pop(lua_state_, 1);
    }
  }
  lua_pop(lua_state_, 1);
  return result;
}