Serializing objects in XML format

The JSON serialization was a direct representation of the C++ objects and Qt already provides all we need. However, the serialization of a C++ object can be done with various representations in an XML format. So we have to write the XML ↔ QVariant conversion ourselves. We have decided to use the following XML representation:

<[name]> type="[type]">[data]</[name]> 

For example, the soundId type gives this XML representation:

<soundId type="int">2</soundId> 

Create a C++ class XmlSerializer that also inherits from Serializer. Let's begin with the save() function, here is XmlSerializer.h:

#include <QXmlStreamWriter> 
#include <QXmlStreamReader> 
 
#include "Serializer.h" 
 
class XmlSerializer : public Serializer 
{ 
public: 
    XmlSerializer(); 
 
    void save(const Serializable& serializable,  
        const QString& filepath,  
        const...