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-rw-r--r--src/corelib/kernel/qvariant.cpp99
-rw-r--r--src/corelib/kernel/qvariant.h17
-rw-r--r--src/corelib/kernel/qvariant_p.h43
3 files changed, 83 insertions, 76 deletions
diff --git a/src/corelib/kernel/qvariant.cpp b/src/corelib/kernel/qvariant.cpp
index b4427c0..ea66658 100644
--- a/src/corelib/kernel/qvariant.cpp
+++ b/src/corelib/kernel/qvariant.cpp
@@ -71,27 +71,6 @@ QT_BEGIN_NAMESPACE
# define FLT_DIG 6
#endif
-
-static const void *constDataHelper(const QVariant::Private &d)
-{
- switch (d.type) {
- case QVariant::Int:
- return &d.data.i;
- case QVariant::UInt:
- return &d.data.u;
- case QVariant::Bool:
- return &d.data.b;
- case QVariant::LongLong:
- return &d.data.ll;
- case QVariant::ULongLong:
- return &d.data.ull;
- case QVariant::Double:
- return &d.data.d;
- default:
- return d.is_shared ? d.data.shared->ptr : reinterpret_cast<const void *>(&d.data.ptr);
- }
-}
-
static void construct(QVariant::Private *x, const void *copy)
{
x->is_shared = false;
@@ -179,6 +158,9 @@ static void construct(QVariant::Private *x, const void *copy)
case QVariant::Double:
x->data.d = copy ? *static_cast<const double*>(copy) : 0.0;
break;
+ case QMetaType::Float:
+ x->data.f = copy ? *static_cast<const float*>(copy) : 0.0f;
+ break;
case QVariant::LongLong:
x->data.ll = copy ? *static_cast<const qlonglong *>(copy) : Q_INT64_C(0);
break;
@@ -274,6 +256,7 @@ static void clear(QVariant::Private *d)
case QVariant::LongLong:
case QVariant::ULongLong:
case QVariant::Double:
+ case QMetaType::Float:
break;
case QVariant::Invalid:
case QVariant::UserType:
@@ -491,7 +474,7 @@ static qlonglong qMetaTypeNumber(const QVariant::Private *d)
case QMetaType::Long:
return qlonglong(*static_cast<long *>(d->data.shared->ptr));
case QMetaType::Float:
- return qRound64(*static_cast<float *>(d->data.shared->ptr));
+ return qRound64(d->data.f);
case QVariant::Double:
return qRound64(d->data.d);
}
@@ -628,7 +611,7 @@ static bool convert(const QVariant::Private *d, QVariant::Type t, void *result,
*str = QString::number(qMetaTypeUNumber(d));
break;
case QMetaType::Float:
- *str = QString::number(*static_cast<float *>(d->data.shared->ptr), 'g', FLT_DIG);
+ *str = QString::number(d->data.f, 'g', FLT_DIG);
break;
case QVariant::Double:
*str = QString::number(d->data.d, 'g', DBL_DIG);
@@ -799,7 +782,7 @@ static bool convert(const QVariant::Private *d, QVariant::Type t, void *result,
*ba = QByteArray::number(d->data.d, 'g', DBL_DIG);
break;
case QMetaType::Float:
- *ba = QByteArray::number(*static_cast<float *>(d->data.shared->ptr), 'g', FLT_DIG);
+ *ba = QByteArray::number(d->data.f, 'g', FLT_DIG);
break;
case QMetaType::Char:
case QMetaType::UChar:
@@ -901,7 +884,7 @@ static bool convert(const QVariant::Private *d, QVariant::Type t, void *result,
*f = double(d->data.b);
break;
case QMetaType::Float:
- *f = *static_cast<float *>(d->data.shared->ptr);
+ *f = double(d->data.f);
break;
case QVariant::LongLong:
case QVariant::Int:
@@ -1355,7 +1338,7 @@ void QVariant::create(int type, const void *copy)
QVariant::~QVariant()
{
- if (d.type > Char && (!d.is_shared || !d.data.shared->ref.deref()))
+ if (d.type > Char && d.type != QMetaType::Float && (!d.is_shared || !d.data.shared->ref.deref()))
handler->clear(&d);
}
@@ -1371,7 +1354,7 @@ QVariant::QVariant(const QVariant &p)
{
if (d.is_shared) {
d.data.shared->ref.ref();
- } else if (p.d.type > Char) {
+ } else if (p.d.type > Char && p.d.type != QMetaType::Float) {
handler->construct(&d, p.constData());
d.is_null = p.d.is_null;
}
@@ -1565,6 +1548,12 @@ QVariant::QVariant(const char *val)
*/
/*!
+ \fn QVariant::QVariant(float val)
+
+ Constructs a new variant with a floating point value, \a val.
+*/
+
+/*!
\fn QVariant::QVariant(const QList<QVariant> &val)
Constructs a new variant with a list value, \a val.
@@ -1619,44 +1608,44 @@ QVariant::QVariant(double val)
{ d.is_null = false; d.type = Double; d.data.d = val; }
QVariant::QVariant(const QByteArray &val)
-{ create(ByteArray, &val); }
+{ d.is_null = false; d.type = ByteArray; v_construct<QByteArray>(&d, val); }
QVariant::QVariant(const QBitArray &val)
-{ create(BitArray, &val); }
+{ d.is_null = false; d.type = BitArray; v_construct<QBitArray>(&d, val); }
QVariant::QVariant(const QString &val)
-{ create(String, &val); }
+{ d.is_null = false; d.type = String; v_construct<QString>(&d, val); }
QVariant::QVariant(const QChar &val)
-{ create (Char, &val); }
+{ d.is_null = false; d.type = Char; v_construct<QChar>(&d, val); }
QVariant::QVariant(const QLatin1String &val)
-{ QString str(val); create(String, &str); }
+{ QString str(val); d.is_null = false; d.type = String; v_construct<QString>(&d, str); }
QVariant::QVariant(const QStringList &val)
-{ create(StringList, &val); }
+{ d.is_null = false; d.type = StringList; v_construct<QStringList>(&d, val); }
QVariant::QVariant(const QDate &val)
-{ create(Date, &val); }
+{ d.is_null = false; d.type = Date; v_construct<QDate>(&d, val); }
QVariant::QVariant(const QTime &val)
-{ create(Time, &val); }
+{ d.is_null = false; d.type = Time; v_construct<QTime>(&d, val); }
QVariant::QVariant(const QDateTime &val)
-{ create(DateTime, &val); }
+{ d.is_null = false; d.type = DateTime; v_construct<QDateTime>(&d, val); }
QVariant::QVariant(const QList<QVariant> &list)
-{ create(List, &list); }
+{ d.is_null = false; d.type = List; v_construct<QVariantList>(&d, list); }
QVariant::QVariant(const QMap<QString, QVariant> &map)
-{ create(Map, &map); }
+{ d.is_null = false; d.type = Map; v_construct<QVariantMap>(&d, map); }
QVariant::QVariant(const QHash<QString, QVariant> &hash)
-{ create(Hash, &hash); }
+{ d.is_null = false; d.type = Hash; v_construct<QVariantHash>(&d, hash); }
#ifndef QT_NO_GEOM_VARIANT
-QVariant::QVariant(const QPoint &pt) { create(Point, &pt); }
-QVariant::QVariant(const QPointF &pt) { create (PointF, &pt); }
-QVariant::QVariant(const QRectF &r) { create (RectF, &r); }
-QVariant::QVariant(const QLineF &l) { create (LineF, &l); }
-QVariant::QVariant(const QLine &l) { create (Line, &l); }
-QVariant::QVariant(const QRect &r) { create(Rect, &r); }
-QVariant::QVariant(const QSize &s) { create(Size, &s); }
-QVariant::QVariant(const QSizeF &s) { create(SizeF, &s); }
+QVariant::QVariant(const QPoint &pt) { d.is_null = false; d.type = Point; v_construct<QPoint>(&d, pt); }
+QVariant::QVariant(const QPointF &pt) { d.is_null = false; d.type = PointF; v_construct<QPointF>(&d, pt); }
+QVariant::QVariant(const QRectF &r) { d.is_null = false; d.type = RectF; v_construct<QRectF>(&d, r); }
+QVariant::QVariant(const QLineF &l) { d.is_null = false; d.type = LineF; v_construct<QLineF>(&d, l); }
+QVariant::QVariant(const QLine &l) { d.is_null = false; d.type = Line; v_construct<QLine>(&d, l); }
+QVariant::QVariant(const QRect &r) { d.is_null = false; d.type = Rect; v_construct<QRect>(&d, r); }
+QVariant::QVariant(const QSize &s) { d.is_null = false; d.type = Size; v_construct<QSize>(&d, s); }
+QVariant::QVariant(const QSizeF &s) { d.is_null = false; d.type = SizeF; v_construct<QSizeF>(&d, s); }
#endif
-QVariant::QVariant(const QUrl &u) { create(Url, &u); }
-QVariant::QVariant(const QLocale &l) { create(Locale, &l); }
+QVariant::QVariant(const QUrl &u) { d.is_null = false; d.type = Url; v_construct<QUrl>(&d, u); }
+QVariant::QVariant(const QLocale &l) { d.is_null = false; d.type = Locale; v_construct<QLocale>(&d, l); }
#ifndef QT_NO_REGEXP
-QVariant::QVariant(const QRegExp &regExp) { create(RegExp, &regExp); }
+QVariant::QVariant(const QRegExp &regExp) { d.is_null = false; d.type = RegExp; v_construct<QRegExp>(&d, regExp); }
#endif
QVariant::QVariant(Qt::GlobalColor color) { create(62, &color); }
@@ -1721,7 +1710,7 @@ QVariant& QVariant::operator=(const QVariant &variant)
if (variant.d.is_shared) {
variant.d.data.shared->ref.ref();
d = variant.d;
- } else if (variant.d.type > Char) {
+ } else if (variant.d.type > Char && variant.d.type != QMetaType::Float) {
d.type = variant.d.type;
handler->construct(&d, variant.constData());
d.is_null = variant.d.is_null;
@@ -1907,7 +1896,7 @@ void QVariant::load(QDataStream &s)
}
// const cast is safe since we operate on a newly constructed variant
- if (!QMetaType::load(s, d.type, const_cast<void *>(constDataHelper(d)))) {
+ if (!QMetaType::load(s, d.type, const_cast<void *>(constData()))) {
s.setStatus(QDataStream::ReadCorruptData);
qWarning("QVariant::load: unable to load type %d.", d.type);
}
@@ -1947,7 +1936,7 @@ void QVariant::save(QDataStream &s) const
return;
}
- if (!QMetaType::save(s, d.type, constDataHelper(d))) {
+ if (!QMetaType::save(s, d.type, constData())) {
Q_ASSERT_X(false, "QVariant::save", "Invalid type to save");
qWarning("QVariant::save: unable to save type %d.", d.type);
}
@@ -2726,7 +2715,7 @@ bool QVariant::cmp(const QVariant &v) const
const void *QVariant::constData() const
{
- return constDataHelper(d);
+ return d.is_shared ? d.data.shared->ptr : reinterpret_cast<const void *>(&d.data.ptr);
}
/*!
@@ -2739,7 +2728,7 @@ const void *QVariant::constData() const
void* QVariant::data()
{
detach();
- return const_cast<void *>(constDataHelper(d));
+ return const_cast<void *>(constData());
}
diff --git a/src/corelib/kernel/qvariant.h b/src/corelib/kernel/qvariant.h
index 580b101..d73fcbc 100644
--- a/src/corelib/kernel/qvariant.h
+++ b/src/corelib/kernel/qvariant.h
@@ -128,7 +128,7 @@ class Q_CORE_EXPORT QVariant
LineF = 24,
Point = 25,
PointF = 26,
- RegExp = 27,
+ RegExp = 27,
Hash = 28,
LastCoreType = Hash,
@@ -181,6 +181,7 @@ class Q_CORE_EXPORT QVariant
QVariant(qulonglong ull);
QVariant(bool b);
QVariant(double d);
+ QVariant(float f) { d.is_null = false; d.type = QMetaType::Float; d.data.f = f; }
#ifndef QT_NO_CAST_FROM_ASCII
QT_ASCII_CAST_WARN_CONSTRUCTOR QVariant(const char *str);
#endif
@@ -349,6 +350,7 @@ class Q_CORE_EXPORT QVariant
uint u;
bool b;
double d;
+ float f;
qlonglong ll;
qulonglong ull;
void *ptr;
@@ -443,7 +445,18 @@ inline QVariant qVariantFromValue(const QVariant &t) { return t; }
template <typename T>
inline void qVariantSetValue(QVariant &v, const T &t)
{
- v = QVariant(qMetaTypeId<T>(reinterpret_cast<T *>(0)), &t);
+ //if possible we reuse the current QVariant private
+ const int type = qMetaTypeId<T>(reinterpret_cast<T *>(0));
+ QVariant::Private &d = v.data_ptr();
+ if (type <= int(QVariant::Char) || (type == d.type && v.isDetached())) {
+ d.type = type;
+ T *old = reinterpret_cast<T*>(d.is_shared ? d.data.shared->ptr : &d.data.ptr);
+ if (QTypeInfo<T>::isComplex)
+ old->~T();
+ new (old) T(t); //call the copy constructor
+ } else {
+ v = QVariant(type, &t);
+ }
}
inline QVariant::QVariant() {}
diff --git a/src/corelib/kernel/qvariant_p.h b/src/corelib/kernel/qvariant_p.h
index 0764fe3..074575b 100644
--- a/src/corelib/kernel/qvariant_p.h
+++ b/src/corelib/kernel/qvariant_p.h
@@ -60,8 +60,6 @@
QT_BEGIN_NAMESPACE
-extern Q_CORE_EXPORT const QVariant::Handler *qExtendedVariantHandler;
-
#ifdef Q_CC_SUN // Sun CC picks the wrong overload, so introduce awful hack
template <typename T>
@@ -70,7 +68,7 @@ inline T *v_cast(const QVariant::Private *nd, T * = 0)
QVariant::Private *d = const_cast<QVariant::Private *>(nd);
return ((sizeof(T) > sizeof(QVariant::Private::Data))
? static_cast<T *>(d->data.shared->ptr)
- : reinterpret_cast<T*>(&d->data.c));
+ : static_cast<T *>(static_cast<void *>(&d->data.c)));
}
#else // every other compiler in this world
@@ -80,7 +78,7 @@ inline const T *v_cast(const QVariant::Private *d, T * = 0)
{
return ((sizeof(T) > sizeof(QVariant::Private::Data))
? static_cast<const T *>(d->data.shared->ptr)
- : reinterpret_cast<const T *>(&d->data.c));
+ : static_cast<const T *>(static_cast<const void *>(&d->data.c)));
}
template <typename T>
@@ -88,15 +86,17 @@ inline T *v_cast(QVariant::Private *d, T * = 0)
{
return ((sizeof(T) > sizeof(QVariant::Private::Data))
? static_cast<T *>(d->data.shared->ptr)
- : reinterpret_cast<T *>(&d->data.c));
+ : static_cast<T *>(static_cast<void *>(&d->data.c)));
}
#endif
-//a simple template that avoids to allocate 2 buffers when creating a QVariant
+
+//a simple template that avoids to allocate 2 memory chunks when creating a QVariant
template <class T> class QVariantPrivateSharedEx : public QVariant::PrivateShared
{
public:
+ QVariantPrivateSharedEx() : QVariant::PrivateShared(&m_t) { }
QVariantPrivateSharedEx(const T&t) : QVariant::PrivateShared(&m_t), m_t(t) { }
private:
@@ -105,14 +105,12 @@ private:
// constructs a new variant if copy is 0, otherwise copy-constructs
template <class T>
-inline void v_construct(QVariant::Private *x, const T& t)
+inline void v_construct(QVariant::Private *x, const T &t)
{
- x->type = qMetaTypeId<T>(reinterpret_cast<T *>(0));
if (sizeof(T) > sizeof(QVariant::Private::Data)) {
x->data.shared = new QVariantPrivateSharedEx<T>(t);
x->is_shared = true;
} else {
- x->is_shared = false;
new (&x->data.ptr) T(t);
}
}
@@ -120,24 +118,31 @@ inline void v_construct(QVariant::Private *x, const T& t)
template <class T>
inline void v_construct(QVariant::Private *x, const void *copy, T * = 0)
{
- if (copy) {
- v_construct<T>(x, *reinterpret_cast<const T*>(copy));
+ if (sizeof(T) > sizeof(QVariant::Private::Data)) {
+ x->data.shared = copy ? new QVariantPrivateSharedEx<T>(*static_cast<const T *>(copy))
+ : new QVariantPrivateSharedEx<T>;
+ x->is_shared = true;
} else {
- T t;
- v_construct<T>(x, t);
+ if (copy)
+ new (&x->data.ptr) T(*static_cast<const T *>(copy));
+ else
+ new (&x->data.ptr) T;
}
}
-
// deletes the internal structures
template <class T>
inline void v_clear(QVariant::Private *d, T* = 0)
{
- //now we need to call the destructor in any case
- //because QVariant::PrivateShared doesn't have a virtual destructor
- v_cast<T>(d)->~T();
- if (sizeof(T) > sizeof(QVariant::Private::Data))
- delete d->data.shared;
+
+ if (sizeof(T) > sizeof(QVariant::Private::Data)) {
+ //now we need to cast
+ //because QVariant::PrivateShared doesn't have a virtual destructor
+ delete static_cast<QVariantPrivateSharedEx<T>*>(d->data.shared);
+ } else {
+ v_cast<T>(d)->~T();
+ }
+
}
QT_END_NAMESPACE
generated by cgit v0.12 at 2024-12-26 18:51:49 (GMT)