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Diffstat (limited to 'libodb-qt/odb/qt/smart-ptr/pointer-traits.hxx')
-rw-r--r-- | libodb-qt/odb/qt/smart-ptr/pointer-traits.hxx | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/libodb-qt/odb/qt/smart-ptr/pointer-traits.hxx b/libodb-qt/odb/qt/smart-ptr/pointer-traits.hxx new file mode 100644 index 0000000..f5cbc39 --- /dev/null +++ b/libodb-qt/odb/qt/smart-ptr/pointer-traits.hxx @@ -0,0 +1,110 @@ +// file : odb/qt/smart-ptr/pointer-traits.hxx +// license : GNU GPL v2; see accompanying LICENSE file + +#ifndef ODB_QT_SMART_PTR_POINTER_TRAITS_HXX +#define ODB_QT_SMART_PTR_POINTER_TRAITS_HXX + +#include <odb/pre.hxx> + +#include <QtCore/QSharedPointer> +#include <QtCore/QWeakPointer> + +#include <odb/pointer-traits.hxx> +#include <odb/details/meta/remove-const.hxx> + +namespace odb +{ + // Specialization for QSharedPointer. + // + template <typename T> + class pointer_traits<QSharedPointer<T> > + { + public: + static const pointer_kind kind = pk_shared; + static const bool lazy = false; + + typedef T element_type; + typedef QSharedPointer<element_type> pointer_type; + typedef QSharedPointer<const element_type> const_pointer_type; + typedef typename odb::details::meta::remove_const<element_type>::result + unrestricted_element_type; + typedef QSharedPointer<unrestricted_element_type> + unrestricted_pointer_type; + typedef smart_ptr_guard<pointer_type> guard; + + static element_type* + get_ptr (const pointer_type& p) + { + return p.data (); + } + + static element_type& + get_ref (const pointer_type& p) + { + return *p; + } + + static bool + null_ptr (const pointer_type& p) + { + return !p; + } + + static unrestricted_pointer_type + const_pointer_cast (const pointer_type& p) + { + return qSharedPointerConstCast<unrestricted_element_type> (p); + } + + template <typename T1> + static QSharedPointer<T1> + static_pointer_cast (const pointer_type& p) + { + return qSharedPointerCast<T1> (p); + } + + template <typename T1> + static QSharedPointer<T1> + dynamic_pointer_cast (const pointer_type& p) + { + return qSharedPointerDynamicCast<T1> (p); + } + + public: + static void* + allocate (std::size_t n) + { + return operator new (n); + } + + static void + free (void* p) + { + operator delete (p); + } + }; + + // Specialization for QWeakPointer. + // + template <typename T> + class pointer_traits<QWeakPointer<T> > + { + public: + static const pointer_kind kind = pk_weak; + static const bool lazy = false; + + typedef T element_type; + typedef QWeakPointer<element_type> pointer_type; + typedef QSharedPointer<element_type> strong_pointer_type; + + static strong_pointer_type + lock (const pointer_type& p) + { + return p.toStrongRef (); + } + }; +} + +#include <odb/post.hxx> + +#endif // ODB_QT_SMART_PTR_POINTER_TRAITS_HXX |