[Boost-commit] svn:boost r55311 - sandbox/fmhess/boost/generic_ptr

Subject: [Boost-commit] svn:boost r55311 - sandbox/fmhess/boost/generic_ptr
From: fmhess_at_[hidden]
Date: 2009-07-31 10:24:23

Author: fmhess
Date: 2009-07-31 10:24:23 EDT (Fri, 31 Jul 2009)
New Revision: 55311
URL: http://svn.boost.org/trac/boost/changeset/55311

Log:
Added generic_ptr::pointer_traits and rebind specializations for
some common smart pointers.

Text files modified: 
   sandbox/fmhess/boost/generic_ptr/pointer_traits.hpp |    60 ++++++++++++++++++++++++++++++++++++++++
   1 files changed, 60 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	2009-07-31 10:24:23 EDT (Fri, 31 Jul 2009)
@@ -21,8 +21,18 @@
 #include <boost/mpl/or.hpp>
 #include <boost/type_traits/is_pointer.hpp>
 
+namespace std
+{
+  template<typename T> class shared_ptr;
+  template<typename T> class unique_ptr;
+}
+
 namespace boost
 {
+  template<typename T> class shared_ptr;
+  template<typename T> class scoped_ptr;
+  template<typename T> class intrusive_ptr;
+
   namespace generic_ptr
   {
     namespace detail
@@ -118,6 +128,56 @@
       typedef ValueType * other;
     };
 
+    // pointer traits for some external smart pointers
+    namespace detail
+    {
+      template<typename T> struct value_templated_ptr_pointer_traits
+      {
+        typedef T value_type;
+        typedef T * pointer;
+        typedef typename pointer_traits<T*>::reference reference;
+      };
+    } // namespace detail
+    template<typename T> struct pointer_traits<boost::shared_ptr<T> > :
+      public detail::value_templated_ptr_pointer_traits<T>
+    {};
+    template<typename T, typename ValueType>
+    struct rebind<boost::shared_ptr<T>, ValueType>
+    {
+      typedef boost::shared_ptr<ValueType> other;
+    };
+    template<typename T> struct pointer_traits<boost::scoped_ptr<T> > :
+      public detail::value_templated_ptr_pointer_traits<T>
+    {};
+    template<typename T, typename ValueType>
+    struct rebind<boost::scoped_ptr<T>, ValueType>
+    {
+      typedef boost::scoped_ptr<ValueType> other;
+    };
+    template<typename T> struct pointer_traits<boost::intrusive_ptr<T> > :
+      public detail::value_templated_ptr_pointer_traits<T>
+    {};
+    template<typename T, typename ValueType>
+    struct rebind<boost::intrusive_ptr<T>, ValueType>
+    {
+      typedef boost::intrusive_ptr<ValueType> other;
+    };
+    template<typename T> struct pointer_traits<std::shared_ptr<T> > :
+      public detail::value_templated_ptr_pointer_traits<T>
+    {};
+    template<typename T, typename ValueType>
+    struct rebind<std::shared_ptr<T>, ValueType>
+    {
+      typedef std::shared_ptr<ValueType> other;
+    };
+    template<typename T> struct pointer_traits<std::unique_ptr<T> > :
+      public detail::value_templated_ptr_pointer_traits<T>
+    {};
+    template<typename T, typename ValueType>
+    struct rebind<std::unique_ptr<T>, ValueType>
+    {
+      typedef std::unique_ptr<ValueType> other;
+    };
   } // namespace generic_ptr
 } // namespace boost