source: trunk/include/qpair.h@ 8

/****************************************************************************
**
** Definition of QPair class
**
**
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** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
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** This file may be distributed and/or modified under the terms of the
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** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
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** licenses may use this file in accordance with the Qt Commercial License
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#ifndef QPAIR_H
#define QPAIR_H

#ifndef QT_H
#include "qglobal.h"
#include "qdatastream.h"
#endif // QT_H

template <class T1, class T2>
struct QPair
{
    typedef T1 first_type;
    typedef T2 second_type;

    QPair()
        : first( T1() ), second( T2() )
    {}
    QPair( const T1& t1, const T2& t2 )
        : first( t1 ), second( t2 )
    {}

    QPair<T1, T2>& operator=(const QPair<T1, T2>& other)
    {
        if (this != &other) {
            first = other.first;
            second = other.second;
        }
        return *this;
    }

    T1 first;
    T2 second;
};

template <class T1, class T2>
Q_INLINE_TEMPLATES bool operator==( const QPair<T1, T2>& x, const QPair<T1, T2>& y )
{
    return x.first == y.first && x.second == y.second;
}

template <class T1, class T2>
Q_INLINE_TEMPLATES bool operator<( const QPair<T1, T2>& x, const QPair<T1, T2>& y )
{
    return x.first < y.first ||
           ( !( y.first < x.first ) && x.second < y.second );
}

template <class T1, class T2>
Q_INLINE_TEMPLATES QPair<T1, T2> qMakePair( const T1& x, const T2& y )
{
    return QPair<T1, T2>( x, y );
}

#ifndef QT_NO_DATASTREAM
template <class T1, class T2>
inline QDataStream& operator>>( QDataStream& s, QPair<T1, T2>& p )
{
    s >> p.first >> p.second;
    return s;
}

template <class T1, class T2>
inline QDataStream& operator<<( QDataStream& s, const QPair<T1, T2>& p )
{
    s << p.first << p.second;
    return s;
}
#endif

#endif