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HxRegData.h

/*
 *  Copyright (c) 1998, University of Amsterdam, The Netherlands.
 *  All rights reserved.
 *
 *
 *  Author(s):
 *  Dennis Koelma (koelma@wins.uva.nl)
 *  Edo Poll (poll@wins.uva.nl)
 */

#ifndef HxRegData_h
#define HxRegData_h


#include "HxIoFwd.h"
#include "HxString.h"
#include "HxPnString.h"

class L_HXBASIS HxRegData
{
public:
                    HxRegData();
                    HxRegData(HxString);
                    HxRegData(int);
                    HxRegData(const HxRegData&);

                    ~HxRegData();

    HxRegData&      operator=(const HxRegData&);

    typedef enum { Int, String } RvType;

    RvType          type() const;

    void            setString(HxString);
    HxString        getString() const;

    void            setInt(int);
    int             getInt() const;

    HxString        toString() const;

    STD_OSTREAM&    put(STD_OSTREAM&, int cCode = 0) const;

private:
    RvType          _type;
    union {
        char        _str[sizeof(HxPnString)];
        int         _int;
    } _val;
};

inline HxString
makeString(const HxRegData& data)
{
    return data.toString();
}

inline STD_OSTREAM&
operator<<(STD_OSTREAM& os, const HxRegData& val)
{
    return val.put(os);
}

inline
HxRegData::HxRegData()
{
    _type = String;
    new((void*)&(_val._str[0])) HxPnString(HxString());
}

inline
HxRegData::HxRegData(HxString s)
{
    _type = String;
    new((void*)&(_val._str[0])) HxPnString(s);
}

inline
HxRegData::HxRegData(int i)
{
    _type = Int;
    _val._int = i;
}

inline
HxRegData::~HxRegData()
{
    if (_type == String)
        ((HxPnString*)&(_val._str[0]))->~HxPnString();
}

inline HxRegData::RvType
HxRegData::type() const
{
    return _type;
}

inline void
HxRegData::setString(HxString s)
{
    if (_type == String)
        ((HxPnString*)&(_val._str[0]))->~HxPnString();
    new((void*)&(_val._str[0])) HxPnString(s);
    _type = String;
}

inline HxString
HxRegData::getString() const
{
    return (_type == String) ?
                ((HxPnString*)&(_val._str[0]))->toString() :
                HxString();
}

inline void
HxRegData::setInt(int i)
{
    if (_type == String)
        ((HxPnString*)&(_val._str[0]))->~HxPnString();
    _val._int = i;
    _type = Int;
}

inline int
HxRegData::getInt() const
{
    return (_type == Int) ? _val._int : 0 ;
}

#endif

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