Method readFastImplementation

test/coord_xml_t.cpp:998–1054

}

void CoordXmlTest::readFastImplementation()
{
	QFETCH(int, num_coords);
	MapCoordVector coords(num_coords, proto_coord);
	
	buffer.buffer().truncate(0);
	QBuffer header;
	{
		QXmlStreamWriter xml(&header);
		
		header.open(QBuffer::ReadWrite);
		xml.setAutoFormatting(false);
		xml.setAutoFormatting(false);
		xml.writeStartDocument();
		
		XMLFileFormat::active_version = 6; // Activate fast text format.
		
		xml.writeStartElement(QString::fromLatin1("root"));
		xml.writeCharacters(QString{}); // flush root start element
		
		buffer.open(QBuffer::ReadWrite);
		xml.setDevice(&buffer);
		{
			XmlElementWriter element(xml, QLatin1String("coords"));
			element.write(coords);
		}
		
		xml.setDevice(nullptr);
		
		buffer.close();
		header.close();
	}
	
	header.open(QBuffer::ReadOnly);
	buffer.open(QBuffer::ReadOnly);
	QXmlStreamReader xml;
	xml.addData(header.buffer());
	xml.readNextStartElement();
	QCOMPARE(xml.name().toString(), QString::fromLatin1("root"));
	
	bool failed = false;
	QBENCHMARK
	{
		// benchmark iteration overhead
		coords.clear();
		xml.addData(buffer.data());
		
		xml.readNextStartElement();
		if (xml.name() != QLatin1String("coords"))
		{
			failed = true;
			break;
		}
		
		XmlElementReader element(xml);
		element.read(coords);
	}