[Boost-commit] svn:boost r55785 - sandbox/fmhess/boost/generic_ptr

Subject: [Boost-commit] svn:boost r55785 - sandbox/fmhess/boost/generic_ptr
From: fmhess_at_[hidden]
Date: 2009-08-26 11:40:23

Author: fmhess
Date: 2009-08-26 11:40:22 EDT (Wed, 26 Aug 2009)
New Revision: 55785
URL: http://svn.boost.org/trac/boost/changeset/55785

Log:
Added shared_pointer_traits with weak_type typedef.

Text files modified: 
   sandbox/fmhess/boost/generic_ptr/pointer_traits.hpp |    25 +++++++++++++++++++++++++               
   1 files changed, 25 insertions(+), 0 deletions(-)

Modified: sandbox/fmhess/boost/generic_ptr/pointer_traits.hpp
==============================================================================
--- sandbox/fmhess/boost/generic_ptr/pointer_traits.hpp	(original)
+++ sandbox/fmhess/boost/generic_ptr/pointer_traits.hpp	2009-08-26 11:40:22 EDT (Wed, 26 Aug 2009)
@@ -24,17 +24,22 @@
 namespace std
 {
   template<typename T> class shared_ptr;
+  template<typename T> class weak_ptr;
   template<typename T, typename D> class unique_ptr;
 }
 
 namespace boost
 {
   template<typename T> class shared_ptr;
+  template<typename T> class weak_ptr;
   template<typename T> class scoped_ptr;
   template<typename T> class intrusive_ptr;
 
   namespace generic_ptr
   {
+    template<typename GenericPointer> class shared;
+    template<typename GenericPointer> class weak;
+
     namespace detail
     {
       BOOST_MPL_HAS_XXX_TRAIT_DEF(value_type) // defines has_value_type metafunction
@@ -194,6 +199,26 @@
     {
       typedef std::unique_ptr<ValueType, D> other;
     };
+
+    template<typename GenericPointer>
+    struct shared_pointer_traits
+    {};
+    template<typename GenericPointer>
+    struct shared_pointer_traits<shared<GenericPointer> >: public pointer_traits<shared<GenericPointer> >
+    {
+      typedef weak<typename pointer_traits<shared<GenericPointer> >::pointer> weak_type;
+    };
+    template<typename T>
+    struct shared_pointer_traits<boost::shared_ptr<T> >: public pointer_traits<boost::shared_ptr<T> >
+    {
+      typedef boost::weak_ptr<T> weak_type;
+    };
+    template<typename T>
+    struct shared_pointer_traits<std::shared_ptr<T> >: public pointer_traits<std::shared_ptr<T> >
+    {
+      typedef std::weak_ptr<T> weak_type;
+    };
+    //FIXME: add weak_ptr_traits with shared_type typedef?
   } // namespace generic_ptr
 } // namespace boost