/****************************************************************************
**
** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (developer.feedback@nokia.com)
**
** This file is part of the HbCore module of the UI Extensions for Mobile.
**
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at developer.feedback@nokia.com.
**
****************************************************************************/
#include "hbvariant_p.h"
#include <QVariant>
#include <QDebug>
#include "hbmemoryutils_p.h"
#include "hbstring_p.h"
#include "hbsmartoffset_p.h"
/**
* detach
* used to support implicit sharing
*/
void HbVariant::detach()
{
HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared);
if( data->mRef > 1 || mShared == true ) {
if( data->mRef > 1 ) {
data->mRef.deref();
}
GET_MEMORY_MANAGER(mMemoryType);
HbSmartOffset offset(manager->alloc(sizeof(HbVariantData)), mMemoryType);
HbVariantData *newData = new((char*)manager->base() + offset.get()) HbVariantData();
newData->mData = data->mData;
newData->mDataType = data->mDataType;
if ( data->mDataType == String ) {
HbSmartOffset dataOffset(manager->alloc( data->stringSize*sizeof(QChar)));
::memcpy(HbMemoryUtils::getAddress<char>(mMemoryType, dataOffset.get()),
getAddress<char>(mMemoryType, data->mData.offset, mShared),
data->stringSize * sizeof(QChar));
newData->stringSize = data->stringSize;
newData->mData.offset = dataOffset.release();
} else if(data->mDataType == Color) {
HbSmartOffset dataOffset(manager->alloc(sizeof(QColor)));
new (HbMemoryUtils::getAddress<QColor>(mMemoryType, dataOffset.get()))
QColor(*getAddress<QColor>(mMemoryType, data->mData.offset, mShared));
newData->mData.offset = dataOffset.release();
}
mDataOffset = offset.release();
mShared = false;
}
}
/*
* C'tor
*/
HbVariant::HbVariant( HbMemoryManager::MemoryType type )
: mMemoryType( type ), mShared( false )
{
initializeData();
}
/*
* C'tor taking int
*/
HbVariant::HbVariant( int val, HbMemoryManager::MemoryType type )
: mMemoryType( type ), mShared( false )
{
HbVariantData * data = initializeData();
if(data){
data->mData.i = val;
data->mDataType = Int;
}
}
/*
* C'tor taking double
*/
HbVariant::HbVariant( double val, HbMemoryManager::MemoryType type )
: mMemoryType( type ),mShared( false )
{
HbVariantData * data = initializeData();
if(data){
data->mData.d = val;
data->mDataType = Double;
}
}
/*
* C'tor taking Qstring
*/
HbVariant::HbVariant( const QString &str, HbMemoryManager::MemoryType type )
: mMemoryType( type ), mShared( false )
{
initializeData();
fillStringData(str.constData(), str.length());
}
/*
* C'tor taking string
*/
HbVariant::HbVariant( const char *val, HbMemoryManager::MemoryType type )
: mMemoryType( type ), mShared( false )
{
initializeData();
QString str = QString::fromAscii(val);
fillStringData(str.constData(), str.length());
}
/*
* C'tor taking QColor
*/
HbVariant::HbVariant( const QColor &col, HbMemoryManager::MemoryType type )
: mMemoryType(type), mShared(false)
{
initializeData();
fillColorData(col);
}
/*
* copy C'tor
*/
HbVariant::HbVariant( const HbVariant &other )
{
mMemoryType = other.mMemoryType;
GET_MEMORY_MANAGER(other.mMemoryType)
HbVariantData* data = HbMemoryUtils::getAddress<HbVariantData>( mMemoryType, other.mDataOffset );
mDataOffset = other.mDataOffset;
if ( !manager->isWritable() || other.mShared == true ) {
mShared = true;
mMemoryType = HbMemoryManager::HeapMemory;
} else {
mShared = false;
data->mRef.ref();
}
Q_ASSERT( mMemoryType == HbMemoryManager::SharedMemory
|| mMemoryType == HbMemoryManager::HeapMemory );
}
/*
* D'tor
*/
HbVariant::~HbVariant()
{
GET_MEMORY_MANAGER(mMemoryType);
// if the memory where the variant is not writable it means it's client process, so do nothing
if( !manager->isWritable() )
return;
HbVariantData *data= getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );
if( mShared != true && !data->mRef.deref() ) {
clear();
HbMemoryUtils::freeMemory( mMemoryType, mDataOffset );
}
}
/*
* to convert to int
*/
int HbVariant::toInt() const
{
HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );
switch(data->mDataType) {
case HbVariant::Int:
return data->mData.i;
case HbVariant::Double:
return int(data->mData.d);
case HbVariant::String:
return int(getString().toLongLong());
case HbVariant::Color:
case HbVariant::StringList:
return 0;
default:
return 0;
}
}
/*
* to convert to string
*/
QString HbVariant::toString() const
{
HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );
switch(data->mDataType) {
case HbVariant::Int:
return QString::number(data->mData.i);
case HbVariant::Double:
return QString::number(data->mData.d);
case HbVariant::String:
return getString();
case HbVariant::Color:
return getColor().name();
case HbVariant::StringList:
return QString();
default:
return QString();
}
}
/*
* to get QString
*/
QString HbVariant::getString() const
{
HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );
if (data->mData.offset != -1) {
QChar* dataPtr = getAddress<QChar>( mMemoryType, data->mData.offset, mShared );
return QString::fromRawData( dataPtr, data->stringSize );
} else { // data->mData.offset == -1 is empty String Variant.
return QString("");
}
}
/*
* to get QColor
*/
QColor HbVariant::toColor() const
{
HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );
switch(data->mDataType) {
case HbVariant::String: {
QColor col = QColor();
col.setNamedColor(getString());
return col;
}
case HbVariant::Color:
return getColor();
case HbVariant::StringList:
case HbVariant::Int:
case HbVariant::Double:
return QColor();
default:
return QColor();
}
}
/*
* to get QColor
*/
QColor HbVariant::getColor() const
{
HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );
return *( getAddress<QColor>(mMemoryType, data->mData.offset, mShared) );
}
/*
* to get stringlist
*/
QStringList HbVariant::toStringList () const
{
// ToDo: Implement it
return QStringList();
}
/*
* to get double
*/
double HbVariant::toDouble() const
{
HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );
switch(data->mDataType) {
case HbVariant::Int:
return double(data->mData.i);
case HbVariant::Double:
return data->mData.d;
case HbVariant::String:
return double(getString().toDouble());
case HbVariant::Color:
case HbVariant::StringList:
return double();
default:
return double();
}
}
/*
* initializeData
*/
HbVariant::HbVariantData * HbVariant::initializeData()
{
GET_MEMORY_MANAGER(mMemoryType);
mDataOffset = -1;
mDataOffset = manager->alloc(sizeof(HbVariantData));
HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);
return new(data) HbVariantData();
}
/*
* fillStringData
*/
void HbVariant::fillStringData(const QChar *str, int size)
{
GET_MEMORY_MANAGER(mMemoryType);
HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);
int oldOffset = reservesMemory(data) ? data->mData.offset : -1;
if (size == 0) {
data->mData.offset = -1;
} else {
// allocate memory and copy data.
int allocBytes = size * sizeof(QChar);
data->mData.offset = manager->alloc(allocBytes);
memcpy(getAddress<char>(mMemoryType, data->mData.offset, mShared),
str, allocBytes);
}
data->stringSize = size;
data->mDataType = String;
if (oldOffset != -1) {
//clean old string data when assigned with a new string value
HbMemoryUtils::freeMemory(mMemoryType, oldOffset);
}
}
/*
* fillColorData
*/
void HbVariant::fillColorData( const QColor &col )
{
GET_MEMORY_MANAGER(mMemoryType);
HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);
int oldOffset = reservesMemory(data) ? data->mData.offset : -1;
if(data->mDataType == HbVariant::Color && data->mData.offset != -1) {
oldOffset = -1; //use the preallocated memory.
} else {
data->mData.offset = manager->alloc(sizeof(QColor));
}
new (getAddress<char>(mMemoryType, data->mData.offset, mShared)) QColor(col);
data->mDataType = Color;
if (oldOffset != -1) {
HbMemoryUtils::freeMemory(mMemoryType, oldOffset);
}
}
/*
* = operator taking int
*/
HbVariant& HbVariant::operator=(int val)
{
detach(); // This will update the mDataOffset to new location if ref > 1.
HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);
freeMemory(data);
data->mData.i = val;
data->mDataType = Int;
return *this;
}
/*
* = operator taking double
*/
HbVariant& HbVariant::operator=(double val)
{
detach(); // This will update the mDataOffset to new location if ref > 1.
HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);
freeMemory(data);
data->mData.d = val;
data->mDataType = Double;
return *this;
}
/*
* = operator taking QString
*/
HbVariant& HbVariant::operator=(const QString& val)
{
detach(); // This will update the mDataOffset to new location if ref > 1.
fillStringData(val.constData(), val.length());
return *this;
}
/*
* = operator taking HbString
*/
HbVariant& HbVariant::operator=(const HbString& val)
{
detach(); // This will update the mDataOffset to new location if ref > 1.
fillStringData(val.constData(), val.length());
return *this;
}
/*
* = operator taking QColor
*/
HbVariant& HbVariant::operator=(const QColor& col)
{
detach(); // This will update the mDataOffset to new location if ref > 1.
fillColorData(col);
return *this;
}
/*
* = operator taking QStringList
*/
HbVariant& HbVariant::operator=(const QStringList& /*strList*/)
{
// ToDo: Implement it
return *this;
}
/*
* = operator taking HbVariant
*/
HbVariant& HbVariant::operator=(const HbVariant &other)
{
GET_MEMORY_MANAGER(mMemoryType)
if(!manager->isWritable()) {
Q_ASSERT(false);
}
HbVariantData *otherData = getAddress<HbVariantData>(other.mMemoryType, other.mDataOffset, other.mShared);
HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);
if(other.mMemoryType != mMemoryType || other.mShared == true) {
if(mShared != true) {
if(data->mRef == 1) {
clear();
HbMemoryUtils::freeMemory(mMemoryType, mDataOffset);
}else {
data->mRef.deref();
}
}
mShared = true;
mMemoryType = HbMemoryManager::HeapMemory;
} else {
otherData->mRef.ref();
if(mShared != true && !data->mRef.deref() ) {
clear();
HbMemoryUtils::freeMemory(mMemoryType, mDataOffset);
}
mShared = other.mShared;
mMemoryType = other.mMemoryType;
}
mDataOffset = other.mDataOffset;
Q_ASSERT(mMemoryType == HbMemoryManager::SharedMemory || mMemoryType == HbMemoryManager::HeapMemory);
return *this;
}
/*
* returns true if the value of variant can be converted to the type passed
*/
bool HbVariant::canConvert (HbVariant::Type t) const
{
HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);
if(data->mDataType == t) {
return true;
}
switch(uint(t)) {
case HbVariant::Int:
return data->mDataType == HbVariant::Double
|| data->mDataType == HbVariant::String;
case HbVariant::Double:
return data->mDataType == HbVariant::Int
|| data->mDataType == HbVariant::String;
case HbVariant::String:
return data->mDataType == HbVariant::Int
|| data->mDataType == HbVariant::StringList
|| data->mDataType == HbVariant::Double
|| data->mDataType == HbVariant::Color;
case HbVariant::StringList:
case HbVariant::Color:
return data->mDataType == HbVariant::String;
default :
return false;
}
}
/*
* converts the variant to given type
*/
bool HbVariant::convert (HbVariant::Type t)
{
detach();
HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);
bool ok = true;
int tempOffset = -1;
QColor col;
QString str;
if(data->mDataType == t) {
return true;
}
if (!this->canConvert(t)) {
return false;
}
switch (t) {
case HbVariant::Int:
switch(data->mDataType) {
case HbVariant::Double:
data->mData.i = qRound64(data->mData.d);
data->mDataType = HbVariant::Int;
return true;
case HbVariant::String:
str = getString();
data->stringSize = 0;
tempOffset = data->mData.offset;
data->mData.i = str.toLongLong(&ok);
HbMemoryUtils::freeMemory(mMemoryType, tempOffset);
data->mDataType = HbVariant::Int;
return ok;
default:
return false;
}
case HbVariant::Double:
switch(data->mDataType) {
case HbVariant::Int:
data->mData.d = double(data->mData.i);
data->mDataType = HbVariant::Double;
return true;
case HbVariant::String:
str = getString();
data->stringSize = 0;
tempOffset = data->mData.offset;
data->mData.d = str.toDouble(&ok);
HbMemoryUtils::freeMemory(mMemoryType, tempOffset);
data->mDataType = HbVariant::Double;
return ok;
default:
return false;
}
case HbVariant::String:
switch(data->mDataType) {
case HbVariant::Int : {
QString num = QString::number(data->mData.i);
fillStringData(num.constData(), num.length());
data->mDataType = HbVariant::String;
return true;
}
case HbVariant::Double: {
QString num = QString::number(data->mData.d);
fillStringData(num.constData(), num.length());
data->mDataType = HbVariant::String;
return true;
}
case HbVariant::StringList:
// ToDo: Handle it
return false;
case HbVariant::Color: {
QString colName = getColor().name();
fillStringData(colName.constData(), colName.length());
data->mDataType = HbVariant::String;
return true;
}
default:
return false;
}
case HbVariant::Color:
switch(data->mDataType) {
case HbVariant::String:
col.setNamedColor(getString());
if (!col.isValid()) {
return false;
}
fillColorData(col);
return true;
default:
return false;
}
case HbVariant::StringList:
return false;
default:
return false;
}
}
/*
* converts to QVariant
*/
HbVariant::operator QVariant() const
{
HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);
switch(data->mDataType) {
case HbVariant::Int :
return QVariant(data->mData.i);
case HbVariant::Double :
return QVariant(data->mData.d);
case HbVariant::String :
return QVariant(getString());
case HbVariant::StringList :
return QVariant(QVariant::StringList);
case HbVariant::Color : {
QVariant var = getColor();
return var;
}
default:
return QVariant();
}
}
/*
* clears the variant, frees any alocated memory
*/
void HbVariant::clear()
{
detach(); // This can be optimise.
HbVariantData *data = getAddress<HbVariantData>(mMemoryType,mDataOffset, mShared);
switch(data->mDataType) {
case HbVariant::Int :
data->mData.i=0;
break;
case HbVariant::Double :
data->mData.d=double(0);
break;
case HbVariant::String :
case HbVariant::Color :
HbMemoryUtils::freeMemory(mMemoryType, data->mData.offset);
break;
case HbVariant::StringList :
// ToDo: Handle it
break;
default:
break;
}
data->stringSize = 0;
data->mDataType=HbVariant::Invalid;
}
#ifdef CSS_PARSER_TRACES
/*
* These routines are there to support debugging
*/
bool HbVariant::supportsPrinting() const
{
return true;
}
void HbVariant::print() const
{
HbVariantData * data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared);
switch(data->mDataType)
{
case HbVariant::Int:
qDebug() << data->mData.i;
break;
case HbVariant::Double:
qDebug() << (data->mData.d);
break;
case HbVariant::String:
qDebug() << int(getString().toLongLong());
break;
case HbVariant::Color:
qDebug() << getColor();
break;
case HbVariant::StringList:
default:
qDebug() << "Invalid Type";
}
}
#endif