Experiment with something like:
 
class param_choice {

enum

{

PARAM_CHOICE_UINT8,

PARAM_CHOICE_UINT16,

PARAM_CHOICE_UINT32,

PARAM_CHOICE_INT8,

PARAM_CHOICE_BOOL

}  m_current_value;

template<class Archive>

save(Archive &ar, unsigned int version);

    std::string svalue;

     switch(m_current_value){

     case PARAM_CHOICE_UINT8:

         svalue = "PARAM_CHOICE_UINT8";

    ...

    }

    ar << BOOST_SERIALIZATION_NVP(svalue);

}

template<class Archive>

load(Archive &ar, unsigned int version){

    std::string svalue;

    ar >> BOOST_SERIALIZATION_NVP(svalue);

    if(svalue == std::string("PARAM_CHOICE_UINT8")

        m_current_value = PARAM_CHOICE_UINT8;

    else

    if(...

    ...

}

};
 
Robert Ramey
"Graham Hudspith" <graham.hudspith@ubiquisys.com> wrote in message news:000301c6d7fb$8e8a76c0$7701a8c0@ubiquisys.local...

Another “basic” question for the list again, apologies in advance.

 

I have a class with a data member which is an enumeration, e.g.:

 

typedef enum param_choice

{

PARAM_CHOICE_UINT8,

PARAM_CHOICE_UINT16,

PARAM_CHOICE_UINT32,

PARAM_CHOICE_INT8,

PARAM_CHOICE_BOOL

} param_choice_e;

 

I can quite happily user the Boost Serialization library to save and restore a class with a data member of this type:

 

class Stuff

{

friend std::ostream& operator<<(std::ostream& os, const Stuff& stuff

   

friend class boost::serialization::access;

 

template<class Archive>

void serialize(Archive& ar, const unsigned int file_version)

{

ar & BOOST_SERIALIZATION_NVP(choice);

}

   

param_choice choice;

 

public:

Stuff () {}

   

Stuff (param_choice theChoice);

};

 

This is using XML as the file-format. The data member appears in the file as an integer.

 

However, what I would LIKE to do is output the value of “choice” as a string (e.g. instead of outputing <choice>2</choice>, the file contains <choice>UINT32</choice>). And do a conversion when I read it all back in again, of course.

 

Can someone please provide some pointers to where I can find out how to do this? Or an example?

 

Is the solution going to end up along the lines of:

 

 

Best regards in anticipation,

 

Graham.

 


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