Method compileTransformsLua

app/src/DataModel/FrameBuilder.cpp:2016–2061

* @brief Compiles per-dataset Lua transforms into a shared lua_State, caching refs for O(1) hotpath * lookup. */

 * lookup.
 */
void DataModel::FrameBuilder::compileTransformsLua(TransformEngine& engine,
                                                   int sourceId,
                                                   const std::vector<TransformEntry>& entries)
{
  lua_State* L = luaL_newstate();
  Q_ASSERT(L != nullptr);
  if (!L) [[unlikely]]
    return;

  lua_atpanic(L, [](lua_State* state) -> int {
    const char* msg = lua_tostring(state, -1);
    qWarning() << "[FrameBuilder] Lua transform panic:" << (msg ? msg : "<unknown>");
    throw std::runtime_error(msg ? msg : "lua transform panic");
  });

  openSafeLibsForTransform(L);

  DataModel::installLuaConsole(L);

  DataModel::installLuaCompat(L);

  injectTableApiLua(L);

  DataModel::DeviceWriteApi::installLua(L, sourceId);

  DataModel::ActionFireApi::installLua(L);

  DataModel::DashboardApi::installLua(L);

  DataModel::ScriptApiCall::installLua(L, sourceId);

  DataModel::NotificationCenter::installScriptApi(L);

  lua_pushlightuserdata(L, &engine);
  lua_setfield(L, LUA_REGISTRYINDEX, "__ss_transform__");

  lua_sethook(L, &FrameBuilder::transformLuaWatchdogHook, LUA_MASKCOUNT, kTransformHookInstrCount);

  engine.luaDeadline.setRemainingTime(kTransformWatchdogMs);

  for (const auto& entry : entries)
    compileTransformsLuaEntry(L, engine, entry);

  engine.luaDeadline = QDeadlineTimer(QDeadlineTimer::Forever);
  engine.luaState    = L;
}

/**
 * @brief Compiles a single Lua dataset transform; logs and skips on any error.