Function luaTableHandle

app/src/DataModel/FrameBuilder.cpp:2492–2503

* @brief Lua C closure for tableHandle(table, reg) -> handle; resolve once, off the hot path. */

 * @brief Lua C closure for tableHandle(table, reg) -> handle; resolve once, off the hot path.
 */
static int luaTableHandle(lua_State* L)
{
  auto* store = static_cast<DataModel::DataTableStore*>(lua_touserdata(L, lua_upvalueindex(1)));
  Q_ASSERT(store);

  const char* table   = luaL_checkstring(L, 1);
  const char* reg     = luaL_checkstring(L, 2);
  const qint64 handle = store->handleOf(QString::fromUtf8(table), QString::fromUtf8(reg));

  lua_pushnumber(L, static_cast<lua_Number>(handle));
  return 1;
}

/**
 * @brief Lua C closure for tableHandleMany(table, regs) -> handles; one handle per name, -1 if