diff options
Diffstat (limited to 'src/corelib/kernel/qvariant.h')
| -rw-r--r-- | src/corelib/kernel/qvariant.h | 17 |
1 files changed, 15 insertions, 2 deletions
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() {} |