static void _signal_trampoline(PropertyMap &map, const std::string &k, LuaRef ref, lua_State *l) {
ref.PushCopyToStack();
lua_pushlstring(l, k.c_str(), k.size());
map.PushLuaTable();
lua_pushvalue(l, -2);
lua_rawget(l, -2);
lua_remove(l, -2);
pi_lua_protected_call(l, 2, 0);
}
bool LuaRef::operator==(const LuaRef & ref) const {
if (ref.m_lua != m_lua)
return false;
if (ref.m_id == m_id)
return true;
ref.PushCopyToStack();
PushCopyToStack();
bool return_value = lua_compare(m_lua, -1, -2, LUA_OPEQ);
lua_pop(m_lua, 2);
return return_value;
}