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-rw-r--r--odb/pointer-traits.hxx84
1 files changed, 83 insertions, 1 deletions
diff --git a/odb/pointer-traits.hxx b/odb/pointer-traits.hxx
index 94be0d2..07b396a 100644
--- a/odb/pointer-traits.hxx
+++ b/odb/pointer-traits.hxx
@@ -8,9 +8,10 @@
#include <odb/pre.hxx>
#include <new> // operators new/delete
-#include <memory> // std::auto_ptr
+#include <memory> // std::auto_ptr, std::shared_ptr (C++11)
#include <cstddef> // std::size_t
+#include <odb/details/config.hxx> // ODB_CXX11
#include <odb/details/meta/remove-const.hxx>
namespace odb
@@ -189,6 +190,87 @@ namespace odb
operator delete (p);
}
};
+
+#ifdef ODB_CXX11
+
+ // Specialization for C++11 std::shared_ptr.
+ //
+ template <typename T>
+ class pointer_traits<std::shared_ptr<T> >
+ {
+ public:
+ static const pointer_kind kind = pk_shared;
+ static const bool lazy = false;
+
+ typedef T element_type;
+ typedef std::shared_ptr<element_type> pointer_type;
+ typedef std::shared_ptr<const element_type> const_pointer_type;
+ typedef typename odb::details::meta::remove_const<element_type>::result
+ unrestricted_element_type;
+ typedef std::shared_ptr<unrestricted_element_type>
+ unrestricted_pointer_type;
+ typedef smart_ptr_guard<pointer_type> guard;
+
+ static element_type*
+ get_ptr (const pointer_type& p)
+ {
+ return p.get ();
+ }
+
+ 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
+ cast (const pointer_type& p)
+ {
+ return std::const_pointer_cast<unrestricted_element_type> (p);
+ }
+
+ public:
+ static void*
+ allocate (std::size_t n)
+ {
+ return operator new (n);
+ }
+
+ static void
+ free (void* p)
+ {
+ operator delete (p);
+ }
+ };
+
+ // Specialization for C++11 std::weak_ptr.
+ //
+ template <typename T>
+ class pointer_traits<std::weak_ptr<T> >
+ {
+ public:
+ static const pointer_kind kind = pk_weak;
+ static const bool lazy = false;
+
+ typedef T element_type;
+ typedef std::weak_ptr<element_type> pointer_type;
+ typedef std::shared_ptr<element_type> strong_pointer_type;
+
+ static strong_pointer_type
+ lock (const pointer_type& p)
+ {
+ return p.lock ();
+ }
+ };
+
+#endif // ODB_CXX11
+
}
#include <odb/post.hxx>