Method classifyTable

app/src/DataModel/Scripting/LuaScriptEngine.cpp:714–756

* @brief Dispatches the table at stack top to scalar/2D/mixed conversion paths. */

 * @brief Dispatches the table at stack top to scalar/2D/mixed conversion paths.
 */
QList<QStringList> DataModel::LuaScriptEngine::classifyTable(int len)
{
  QList<QStringList> results;

  bool hasTable  = false;
  bool hasScalar = false;
  for (int i = 1; i <= qMin(len, kMaxElements); ++i) {
    lua_rawgeti(m_state, -1, i);
    if (lua_istable(m_state, -1))
      hasTable = true;
    else
      hasScalar = true;

    lua_pop(m_state, 1);

    if (hasTable && hasScalar)
      break;
  }

  if (!hasTable) {
    results.append(tableToStringList(-1));
    lua_pop(m_state, 1);
    return results;
  }

  if (hasTable && !hasScalar) {
    results.reserve(len);
    for (int i = 1; i <= qMin(len, kMaxElements); ++i) {
      lua_rawgeti(m_state, -1, i);
      if (lua_istable(m_state, -1))
        results.append(tableToStringList(-1));
      else [[unlikely]]
        qWarning() << "[LuaScriptEngine] Row" << i << "is not a table, skipping";

      lua_pop(m_state, 1);
    }

    lua_pop(m_state, 1);
    return results;
  }

  return unzipMixedTable(len);
}

/**
 * @brief Unzips a mixed scalar/vector table into a list of per-step frames.