diff options
author | Marc Mutz <marc.mutz@kdab.com> | 2012-07-20 15:46:40 +0200 |
---|---|---|
committer | Qt by Nokia <qt-info@nokia.com> | 2012-07-26 15:01:04 +0200 |
commit | e083d253950d3e7ce1e6363cd29fba416e69e371 (patch) | |
tree | 7990f2da2be356bb4d6dd30190d3646524d816db /tests/auto/corelib | |
parent | f694b9c83fc4512228d5c9b3384bf7f2e03bb5d5 (diff) |
QMetaTypeId2::IsBuiltIn: (new) template meta-function to check for built-in types
This allows to check whether QMetaTypeId2::MetaType exists, and can help
turn run-time into compile-time expressions, even without constexpr support,
or in situations where constexpr can't be used (because you can't overload
on it). This was designed for the QMetaType::registerConversion feature,
but it's much more widely applicable.
Change-Id: Iafa04add04bcb531b3f7fe3e751c7e91ee6a3bc0
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
Diffstat (limited to 'tests/auto/corelib')
-rw-r--r-- | tests/auto/corelib/kernel/qmetatype/tst_qmetatype.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/auto/corelib/kernel/qmetatype/tst_qmetatype.cpp b/tests/auto/corelib/kernel/qmetatype/tst_qmetatype.cpp index 8247385b0d..b251761415 100644 --- a/tests/auto/corelib/kernel/qmetatype/tst_qmetatype.cpp +++ b/tests/auto/corelib/kernel/qmetatype/tst_qmetatype.cpp @@ -383,6 +383,25 @@ void tst_QMetaType::typeName() FOR_EACH_PRIMITIVE_METATYPE(F) \ FOR_EACH_COMPLEX_CORE_METATYPE(F) \ +namespace { + template <typename T> + struct static_assert_trigger { + Q_STATIC_ASSERT(( QMetaTypeId2<T>::IsBuiltIn )); + enum { value = true }; + }; +} + +#define CHECK_BUILTIN(MetaTypeName, MetaTypeId, RealType) static_assert_trigger< RealType >::value && +Q_STATIC_ASSERT(( FOR_EACH_CORE_METATYPE(CHECK_BUILTIN) true )); +#undef CHECK_BUILTIN +Q_STATIC_ASSERT(( QMetaTypeId2<QList<QVariant> >::IsBuiltIn)); +Q_STATIC_ASSERT(( QMetaTypeId2<QMap<QString,QVariant> >::IsBuiltIn)); +Q_STATIC_ASSERT(( QMetaTypeId2<QObject*>::IsBuiltIn)); +Q_STATIC_ASSERT((!QMetaTypeId2<tst_QMetaType*>::IsBuiltIn)); // QObject subclass +Q_STATIC_ASSERT((!QMetaTypeId2<QList<int> >::IsBuiltIn)); +Q_STATIC_ASSERT((!QMetaTypeId2<QMap<int,int> >::IsBuiltIn)); +Q_STATIC_ASSERT((!QMetaTypeId2<QMetaType::Type>::IsBuiltIn)); + template <int ID> struct MetaEnumToType {}; |