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#ifndef QHOSTADDRESSPRIVATE_H
#define QHOSTADDRESSPRIVATE_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of the QHostAddress and QNetworkInterface classes.  This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//

#include <QtNetwork/private/qtnetworkglobal_p.h>
#include "qhostaddress.h"
#include "qabstractsocket.h"

QT_BEGIN_NAMESPACE

class QNetmask
{
    // stores 0-32 for IPv4, 0-128 for IPv6, or 255 for invalid
    quint8 length;
public:
    Q_DECL_CONSTEXPR QNetmask() : length(255) {}

    bool setAddress(const QHostAddress &address);
    QHostAddress address(QAbstractSocket::NetworkLayerProtocol protocol) const;

    int prefixLength() const { return length == 255 ? -1 : length; }
    void setPrefixLength(QAbstractSocket::NetworkLayerProtocol proto, int len)
    {
        int maxlen = -1;
        if (proto == QAbstractSocket::IPv4Protocol)
            maxlen = 32;
        else if (proto == QAbstractSocket::IPv6Protocol)
            maxlen = 128;
        if (len > maxlen || len < 0)
            length = 255U;
        else
            length = unsigned(len);
    }

    friend bool operator==(QNetmask n1, QNetmask n2)
    { return n1.length == n2.length; }
};

QT_END_NAMESPACE

#endif