QGlobalReader.hh

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#ifndef _Q_GLOBAL_READER_HH_
#define _Q_GLOBAL_READER_HH_

#include "QCuore.hh"
#include "QNamed.hh"
#include "QError.hh"
#include "QMessage.hh"
#include <string>
#include "QGeneralFactory.hh"

class TObject;
namespace Cuore {class QObject;}
using namespace Cuore;


class QGlobalReader : public QNamed
{
    public:
        QGlobalReader(const std::string& name) : QNamed(name) {}

        virtual ~QGlobalReader() {}
        
        virtual const QObject* GetQObject(const std::string& name) const;

        virtual const TObject* GetTObject(const std::string& name) const;

        virtual double GetDouble(const std::string& name) const;

        virtual int GetInt(const std::string& name) const;

        virtual float GetFloat(const std::string& name) const;

        virtual bool GetBool(const std::string& name) const;

        virtual std::string GetString(const std::string& name) const;

    protected:

        virtual QError Open(const std::string& filename, const std::string& opt = "") = 0;

        virtual QError Close() = 0;

        friend class QGlobalReaderDispatcher;

};

class QGlobalReaderFactory {
    public:
        QGlobalReaderFactory(const std::string& name, const std::string& ext) {fName = name; fExt = ext;}
        const std::string& GetName() const { return fName;} 
        const std::string& GetExt() const { return fExt;} 
        virtual ~QGlobalReaderFactory() {};
    private: 
        virtual QGlobalReader* Create() = 0;
        std::string fName;
        std::string fExt;
        friend class QGeneralFactory;
};


#define CREATE_GOLBAL_READER_IMPL(clazz,ext) \
    class clazz ## Factory: public QGlobalReaderFactory{\
        public:\
        clazz ## Factory() : QGlobalReaderFactory(#clazz,ext) {}\
        QGlobalReader *Create(){ return new clazz; }\
    };

#define REGISTER_GLOBAL_READER(clazz, ext) \
    CREATE_GOLBAL_READER_IMPL(clazz, ext);\
    extern "C" void registerInFactory ## clazz() {\
        QGlobalReaderFactory* pt = new clazz ## Factory;\
        QGeneralFactory::GetInstance().RegisterGlobalReader(pt);\
    }

#endif

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