Method parseSpansUtf8

app/src/DataModel/Scripting/FrameParser.cpp:541–565

* @brief Span fast-path dispatch mirroring parseMultiFrameUtf8's source-0 fallback semantics. * Returns -1 when the source's engine has no span-capable parser. */

 *        Returns -1 when the source's engine has no span-capable parser.
 */
qsizetype DataModel::FrameParser::parseSpansUtf8(const QByteArray& frame,
                                                 int sourceId,
                                                 QByteArrayView* out,
                                                 qsizetype maxSpans)
{
  Q_ASSERT(sourceId >= 0);
  Q_ASSERT(out != nullptr);

  if (sourceId == 0) [[likely]] {
    if (!m_engine0Cache || !m_engine0Cache->isLoaded()) [[unlikely]]
      return -1;

    return m_engine0Cache->parseUtf8Spans(QByteArrayView(frame), out, maxSpans);
  }

  auto it = m_engines.find(sourceId);
  if (it == m_engines.end() || !it->second->isLoaded()) {
    if (languageForSource(sourceId) != languageForSource(0))
      return -1;

    return parseSpansUtf8(frame, 0, out, maxSpans);
  }

  return it->second->parseUtf8Spans(QByteArrayView(frame), out, maxSpans);
}

//--------------------------------------------------------------------------------------------------
// Script loading