1 files changed, 60 insertions, 0 deletions
diff --git a/boost/exception/detail/is_output_streamable.hpp b/boost/exception/detail/is_output_streamable.hpp
new file mode 100644
index 0000000000..743313c1ec
--- /dev/null
+++ b/boost/exception/detail/is_output_streamable.hpp
@@ -0,0 +1,60 @@
+//Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc.
+
+//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)
+
+#ifndef UUID_898984B4076411DD973EDFA055D89593
+#define UUID_898984B4076411DD973EDFA055D89593
+#if defined(__GNUC__) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
+#pragma GCC system_header
+#endif
+#if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
+#pragma warning(push,1)
+#endif
+
+#include <ostream>
+
+namespace
+boost
+    {
+    namespace
+    to_string_detail
+        {
+        struct
+        partial_ordering_helper1
+            {
+            template <class CharT,class Traits>
+            partial_ordering_helper1( std::basic_ostream<CharT,Traits> & );
+            };
+
+        struct
+        partial_ordering_helper2
+            {
+            template <class T>
+            partial_ordering_helper2( T const & );
+            };
+
+        char operator<<( partial_ordering_helper1, partial_ordering_helper2 );
+
+        template <class T,class CharT,class Traits>
+        struct
+        is_output_streamable_impl
+            {
+            static std::basic_ostream<CharT,Traits> & f();
+            static T const & g();
+            enum e { value=1!=(sizeof(f()<<g())) };
+            };
+        }
+
+    template <class T, class CharT=char, class Traits=std::char_traits<CharT> >
+    struct
+    is_output_streamable
+        {
+        enum e { value=to_string_detail::is_output_streamable_impl<T,CharT,Traits>::value };
+        };
+    }
+
+#if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
+#pragma warning(pop)
+#endif
+#endif