Updated boost to v1.55.0

[rsem.git] / boost / type_traits / add_rvalue_reference.hpp

diff --git a/boost/type_traits/add_rvalue_reference.hpp b/boost/type_traits/add_rvalue_reference.hpp
new file mode 100644 (file)
index 0000000..92c2c38
--- /dev/null
+++ b/boost/type_traits/add_rvalue_reference.hpp
@@ -0,0 +1,66 @@
+//  add_rvalue_reference.hpp  ---------------------------------------------------------//
+
+//  Copyright 2010 Vicente J. Botet Escriba
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+#ifndef BOOST_TYPE_TRAITS_EXT_ADD_RVALUE_REFERENCE__HPP
+#define BOOST_TYPE_TRAITS_EXT_ADD_RVALUE_REFERENCE__HPP
+
+#include <boost/config.hpp>
+
+//----------------------------------------------------------------------------//
+
+#include <boost/type_traits/is_void.hpp>
+#include <boost/type_traits/is_reference.hpp>
+
+// should be the last #include
+#include <boost/type_traits/detail/type_trait_def.hpp>
+
+//----------------------------------------------------------------------------//
+//                                                                            //
+//                           C++03 implementation of                          //
+//             20.9.7.2 Reference modifications [meta.trans.ref]              //
+//                          Written by Vicente J. Botet Escriba               //
+//                                                                            //
+// If T names an object or function type then the member typedef type
+// shall name T&&; otherwise, type shall name T. [ Note: This rule reflects
+// the semantics of reference collapsing. For example, when a type T names
+// a type T1&, the type add_rvalue_reference<T>::type is not an rvalue
+// reference. -end note ]
+//----------------------------------------------------------------------------//
+
+namespace boost {
+
+namespace type_traits_detail {
+
+    template <typename T, bool b>
+    struct add_rvalue_reference_helper
+    { typedef T   type; };
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+    template <typename T>
+    struct add_rvalue_reference_helper<T, true>
+    {
+        typedef T&&   type;
+    };
+#endif
+
+    template <typename T>
+    struct add_rvalue_reference_imp
+    {
+       typedef typename boost::type_traits_detail::add_rvalue_reference_helper
+                  <T, (is_void<T>::value == false && is_reference<T>::value == false) >::type type;
+    };
+
+}
+
+BOOST_TT_AUX_TYPE_TRAIT_DEF1(add_rvalue_reference,T,typename boost::type_traits_detail::add_rvalue_reference_imp<T>::type)
+
+}  // namespace boost
+
+#include <boost/type_traits/detail/type_trait_undef.hpp>
+
+#endif  // BOOST_TYPE_TRAITS_EXT_ADD_RVALUE_REFERENCE__HPP
+