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HxTagList.h

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

#ifndef HxTagList_h
#define HxTagList_h

#include "HxStd.h"
#include "HxIoFwd.h"
#include "HxString.h"
#include <list>

#include "HxTagTem.h"


class L_HXBASIS HxTagList {
public:
                                HxTagList() {}

                                HxTagList(const HxTagList&);

                                ~HxTagList();

    HxTagList&                  operator=(const HxTagList&);

    void                        erase();

    void                        addTag(HxTag*);

    HxTag*                      getTag(HxString name) const;

    HxString                    toString() const;

    STD_OSTREAM&                put(STD_OSTREAM&) const;


    typedef HxTag*              TagPtr;

    typedef std::list<TagPtr>   List;

private:

    List::const_iterator        findTag(HxString name) const;
    List::iterator              findTag(HxString name);

#pragma warning (disable : 4251)
    List                        _list;
#pragma warning (default : 4251)
};

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

template<class ValT>
inline void
HxAddTag(HxTagList& tags, HxString name, ValT v)
{
    typedef HxTagTem<ValT>  Tag;
    tags.addTag(new Tag(name, v));
}

template<class ValT>
inline ValT
HxGetTag(const HxTagList& tags, HxString name)
{
    typedef HxTagTem<ValT>* TagPtr;
    TagPtr t = TagPtr(tags.getTag(name));
    ValT v;
    if (t)
        v = t->getValue();
    return v;
}

template<class ValT>
inline ValT
HxGetTag(const HxTagList& tags, HxString name, ValT defV)
{
    typedef HxTagTem<ValT>* TagPtr;
    TagPtr t = TagPtr(tags.getTag(name));
    return t ? t->getValue() : defV;
}

inline bool
HxTagIsSet(const HxTagList& tags, HxString name)
{
    return tags.getTag(name) ? true : false;
}


extern L_HXBASIS HxTagList&
HxMakeTagList();

#endif

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