diff options
Diffstat (limited to 'src/corelib/kernel/qmetatype.h')
| -rw-r--r-- | src/corelib/kernel/qmetatype.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h index 1e2a860d8c..1b214e9f74 100644 --- a/src/corelib/kernel/qmetatype.h +++ b/src/corelib/kernel/qmetatype.h @@ -1357,12 +1357,16 @@ namespace QtPrivate enum { Value = sizeof(checkType(static_cast<T*>(0))) == sizeof(yes_type) }; }; + template<typename T, typename Enable = void> + struct IsGadgetHelper { enum { Value = false }; }; + template<typename T> - struct IsGadgetHelper + struct IsGadgetHelper<T, typename T::QtGadgetHelper> { - template<typename X> static typename X::QtGadgetHelper *checkType(X*); - static char checkType(void*); - enum { Value = sizeof(checkType(static_cast<T*>(0))) == sizeof(void*) }; + template <typename X> + static char checkType(void (X::*)()); + static void *checkType(void (T::*)()); + enum { Value = sizeof(checkType(&T::qt_check_for_QGADGET_macro)) == sizeof(void *) }; }; @@ -1381,6 +1385,7 @@ QT_WARNING_DISABLE_CLANG("-Wlocal-type-template-args") // qt_getEnumMetaObject(T) which returns 'char' enum { Value = sizeof(qt_getEnumMetaObject(declval())) == sizeof(QMetaObject*) }; }; + template<> struct IsQEnumHelper<void> { enum { Value = false }; }; QT_WARNING_POP template<typename T, typename Enable = void> @@ -1768,7 +1773,7 @@ template <typename T> struct QMetaTypeIdQObject<T, QMetaType::IsGadget> { enum { - Defined = 1 + Defined = QtPrivate::is_default_constructible<T>::value }; static int qt_metatype_id() |