QBitField Class Reference

#include <qbitfield_p.h>

Public Functions
QBitField &	operator= (const QBitField &)
	QBitField ()
	QBitField (const quint32 *, int bits)
	QBitField (const QBitField &)
quint32	size () const
bool	testBit (int) const
QBitField	united (const QBitField &)
	~QBitField ()

Properties
quint32	bits:31
const quint32 *	data
quint32 *	ownData

Detailed Description

Definition at line 60 of file qbitfield_p.h.

Constructors and Destructors

QBitField() [1/3]

QBitField::QBitField ( )

inline

Definition at line 80 of file qbitfield_p.h.

: bits(0), ownData(0), data(0)
{
}

QBitField() [2/3]

QBitField::QBitField ( const quint32 *  bitData, int  bits  )

inline

Definition at line 85 of file qbitfield_p.h.

: bits((quint32)bitCount), ownData(0), data(bitData)
{
}

QBitField() [3/3]

QBitField::QBitField ( const QBitField &  other )

inline

Definition at line 90 of file qbitfield_p.h.

: bits(other.bits), ownData(other.ownData), data(other.data)
{
    if (ownData) 
        ++(*ownData);
}

~QBitField()

QBitField::~QBitField ( )

inline

Definition at line 97 of file qbitfield_p.h.

{
    if (ownData) 
        if(0 == --(*ownData)) delete [] ownData;
}

Functions

operator=()

QBitField & QBitField::operator= ( const QBitField &  other )

inline

Definition at line 103 of file qbitfield_p.h.

{
    if (other.data == data)
        return *this;

    if (ownData) 
        if(0 == --(*ownData)) delete [] ownData;

    bits = other.bits;
    ownData = other.ownData;
    data = other.data;

    if (ownData) 
        ++(*ownData);

    return *this;
}

size()

quint32 QBitField::size ( ) const

inline

Definition at line 121 of file qbitfield_p.h.

{
    return bits;
}

testBit()

bool QBitField::testBit ( int  b ) const

inline

Definition at line 153 of file qbitfield_p.h.

{
    Q_ASSERT(b >= 0);
    if ((quint32)b < bits) {
        return data[b / 32] & (1 << (b % 32));
    } else {
        return false;
    }
}

united()

QBitField QBitField::united ( const QBitField &  o )

inline

Definition at line 126 of file qbitfield_p.h.

Referenced by QDeclarativeVME::run().

{
    if (o.bits == 0) {
        return *this;
    } else if (bits == 0) {
        return o;
    } else {
        int max = (bits > o.bits)?bits:o.bits;
        int length = (max + 31) / 32;
        QBitField rv;
        rv.bits = max;
        rv.ownData = new quint32[length + 1];
        *(rv.ownData) = 1;
        rv.data = rv.ownData + 1;
        if (bits > o.bits) {
            ::memcpy((quint32 *)rv.data, data, length * sizeof(quint32));
            for (quint32 ii = 0; ii < (o.bits + quint32(31)) / 32; ++ii)
                ((quint32 *)rv.data)[ii] |= o.data[ii];
        } else {
            ::memcpy((quint32 *)rv.data, o.data, length * sizeof(quint32));
            for (quint32 ii = 0; ii < (bits + quint32(31)) / 32; ++ii)
                ((quint32 *)rv.data)[ii] |= data[ii];
        }
        return rv;
    }
}

Properties

bits

quint32 QBitField::bits

private

Definition at line 75 of file qbitfield_p.h.

Referenced by operator=(), size(), testBit(), and united().

data

const quint32* QBitField::data

private

Definition at line 77 of file qbitfield_p.h.

Referenced by operator=(), testBit(), and united().

ownData

quint32* QBitField::ownData

private

Definition at line 76 of file qbitfield_p.h.

Referenced by operator=(), QBitField(), united(), and ~QBitField().

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The documentation for this class was generated from the following file:

• /src/declarative/qml/qbitfield_p.h