Refactor std namespace deduction for forward declarations

include/boost/move/detail/iterator_traits.hpp

@@ -24,20 +24,7 @@
 
 #include <cstddef>
 
-#if defined(__clang__)
+#include <boost/move/detail/std_ns_begin.hpp>
-   #define BOOST_MOVE_CLANG_INLINE_STD_NS
-   #pragma GCC diagnostic push
-   #pragma GCC diagnostic ignored "-Wc++11-extensions"
-#endif
-
-#ifdef _LIBCPP_VERSION
-   #define BOOST_MOVE_STD_NS_BEG _LIBCPP_BEGIN_NAMESPACE_STD
-   #define BOOST_MOVE_STD_NS_END _LIBCPP_END_NAMESPACE_STD
-#else
-   #define BOOST_MOVE_STD_NS_BEG namespace std{
-   #define BOOST_MOVE_STD_NS_END }
-#endif
-
 BOOST_MOVE_STD_NS_BEG
 
 struct input_iterator_tag;
@@ -47,11 +34,7 @@ struct random_access_iterator_tag;
 struct output_iterator_tag;
 
 BOOST_MOVE_STD_NS_END
-
+#include <boost/move/detail/std_ns_end.hpp>
-#ifdef BOOST_MOVE_CLANG_INLINE_STD_NS
-   #pragma GCC diagnostic pop
-   #undef BOOST_MOVE_CLANG_INLINE_STD_NS
-#endif   //BOOST_MOVE_CLANG_INLINE_STD_NS
 
 namespace boost{  namespace movelib{
 

include/boost/move/detail/std_ns_begin.hpp

@@ -0,0 +1,30 @@
+#//////////////////////////////////////////////////////////////////////////////
+#//
+#// (C) Copyright Ion Gaztanaga 2015-2015.
+#// Distributed under the Boost Software License, Version 1.0.
+#// (See accompanying file LICENSE_1_0.txt or copy at
+#// http://www.boost.org/LICENSE_1_0.txt)
+#//
+#// See http://www.boost.org/libs/move for documentation.
+#//
+#//////////////////////////////////////////////////////////////////////////////
+#
+#if defined(_LIBCPP_VERSION)
+   #if defined(__clang__)
+      #define BOOST_MOVE_STD_NS_GCC_DIAGNOSTIC_PUSH
+      #pragma GCC diagnostic push
+      #pragma GCC diagnostic ignored "-Wc++11-extensions"
+   #endif
+   #define BOOST_MOVE_STD_NS_BEG _LIBCPP_BEGIN_NAMESPACE_STD
+   #define BOOST_MOVE_STD_NS_END _LIBCPP_END_NAMESPACE_STD
+#elif defined(BOOST_GNU_STDLIB) && defined(_GLIBCXX_BEGIN_NAMESPACE_VERSION)  //GCC >= 4.6
+   #define BOOST_MOVE_STD_NS_BEG namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION
+   #define BOOST_MOVE_STD_NS_END _GLIBCXX_END_NAMESPACE_VERSION  } // namespace
+#elif defined(BOOST_GNU_STDLIB) && defined(_GLIBCXX_BEGIN_NAMESPACE)  //GCC >= 4.2
+   #define BOOST_MOVE_STD_NS_BEG _GLIBCXX_BEGIN_NAMESPACE(std)
+   #define BOOST_MOVE_STD_NS_END _GLIBCXX_END_NAMESPACE
+#else
+   #define BOOST_MOVE_STD_NS_BEG namespace std{
+   #define BOOST_MOVE_STD_NS_END }
+#endif
+

include/boost/move/detail/std_ns_end.hpp

@@ -0,0 +1,14 @@
+#//////////////////////////////////////////////////////////////////////////////
+#//
+#// (C) Copyright Ion Gaztanaga 2015-2015.
+#// Distributed under the Boost Software License, Version 1.0.
+#// (See accompanying file LICENSE_1_0.txt or copy at
+#// http://www.boost.org/LICENSE_1_0.txt)
+#//
+#// See http://www.boost.org/libs/move for documentation.
+#//
+#//////////////////////////////////////////////////////////////////////////////
+#ifdef BOOST_MOVE_STD_NS_GCC_DIAGNOSTIC_PUSH
+   #pragma GCC diagnostic pop
+   #undef BOOST_MOVE_STD_NS_GCC_DIAGNOSTIC_PUSH
+#endif   //BOOST_MOVE_STD_NS_GCC_DIAGNOSTIC_PUSH

proj/vc7ide/Move.sln

@@ -249,6 +249,7 @@ Global
 		..\..\..\..\boost\move\move.hpp = ..\..\..\..\boost\move\move.hpp
 		..\..\doc\move.qbk = ..\..\doc\move.qbk
 		..\..\..\..\boost\move\detail\move_helpers.hpp = ..\..\..\..\boost\move\detail\move_helpers.hpp
+		..\..\..\..\boost\move\detail\std_ns_begin.hpp = ..\..\..\..\boost\move\detail\std_ns_begin.hpp
 		..\..\..\..\boost\move\traits.hpp = ..\..\..\..\boost\move\traits.hpp
 		..\..\..\..\boost\move\detail\type_traits.hpp = ..\..\..\..\boost\move\detail\type_traits.hpp
 		..\..\..\..\boost\move\unique_ptr.hpp = ..\..\..\..\boost\move\unique_ptr.hpp