From ca7ccbfa7785b8789d5222e4ab0bc74b5c71528b Mon Sep 17 00:00:00 2001
From: Beman Dawes <bdawes@acm.org>
Date: Tue, 12 May 2009 11:27:19 +0000
Subject: [PATCH] Merge from trunk

[SVN r52935]
---
 include/boost/detail/is_incrementable.hpp     | 12 +++-
 .../boost/detail/scoped_enum_emulation.hpp    | 56 +++++++++++++++++++
 include/boost/detail/utf8_codecvt_facet.hpp   | 21 +++----
 3 files changed, 74 insertions(+), 15 deletions(-)
 mode change 100755 => 100644 include/boost/detail/is_incrementable.hpp
 create mode 100644 include/boost/detail/scoped_enum_emulation.hpp

diff --git a/include/boost/detail/is_incrementable.hpp b/include/boost/detail/is_incrementable.hpp
old mode 100755
new mode 100644
index cb7d7a7..1c8fd57
--- a/include/boost/detail/is_incrementable.hpp
+++ b/include/boost/detail/is_incrementable.hpp
@@ -63,7 +63,12 @@ namespace is_incrementable_
   tag operator,(tag,int);  
 #  define BOOST_comma(a,b) (a,b)
 # endif 
-  
+
+# if defined(BOOST_MSVC)
+#  pragma warning(push)
+#  pragma warning(disable:4913) // Warning about operator,
+# endif 
+
   // two check overloads help us identify which operator++ was picked
   char (& check(tag) )[2];
   
@@ -92,6 +97,11 @@ namespace is_incrementable_
         , value = sizeof(is_incrementable_::check(BOOST_comma(x++,0))) == 1
       );
   };
+
+# if defined(BOOST_MSVC)
+#  pragma warning(pop)
+# endif 
+
 }
 
 # undef BOOST_comma
diff --git a/include/boost/detail/scoped_enum_emulation.hpp b/include/boost/detail/scoped_enum_emulation.hpp
new file mode 100644
index 0000000..644c138
--- /dev/null
+++ b/include/boost/detail/scoped_enum_emulation.hpp
@@ -0,0 +1,56 @@
+//  scoped_enum_emulation.hpp  ---------------------------------------------------------//
+
+//  Copyright Beman Dawes, 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Generates C++0x scoped enums if the feature is present, otherwise emulates C++0x
+//  scoped enums with C++03 namespaces and enums. The Boost.Config BOOST_NO_SCOPED_ENUMS
+//  macro is used to detect feature support.
+//
+//  See http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2347.pdf for a
+//  description of the scoped enum feature. Note that the committee changed the name
+//  from strongly typed enum to scoped enum.  
+//
+//  Caution: only the syntax is emulated; the semantics are not emulated and
+//  the syntax emulation doesn't include being able to specify the underlying
+//  representation type.
+//
+//  The emulation is via struct rather than namespace to allow use within classes.
+//  Thanks to Andrey Semashev for pointing that out.
+//
+//  Helpful comments and suggestions were also made by Kjell Elster, Phil Endecott,
+//  Joel Falcou, Mathias Gaunard, Felipe Magno de Almeida, Matt Calabrese, Vincente
+//  Botet, and Daniel James. 
+//
+//  Sample usage:
+//
+//     BOOST_SCOPED_ENUM_START(algae) { green, red, cyan }; BOOST_SCOPED_ENUM_END
+//     ...
+//     BOOST_SCOPED_ENUM(algae) sample( algae::red );
+//     void foo( BOOST_SCOPED_ENUM(algae) color );
+//     ...
+//     sample = algae::green;
+//     foo( algae::cyan );
+
+#ifndef BOOST_SCOPED_ENUM_EMULATION_HPP
+#define BOOST_SCOPED_ENUM_EMULATION_HPP
+
+#include <boost/config.hpp>
+
+#ifdef BOOST_NO_SCOPED_ENUMS
+
+# define BOOST_SCOPED_ENUM_START(name) struct name { enum enum_t
+# define BOOST_SCOPED_ENUM_END };
+# define BOOST_SCOPED_ENUM(name) name::enum_t
+
+#else
+
+# define BOOST_SCOPED_ENUM_START(name) enum class name
+# define BOOST_SCOPED_ENUM_END
+# define BOOST_SCOPED_ENUM(name) name
+
+#endif
+
+#endif  // BOOST_SCOPED_ENUM_EMULATION_HPP
diff --git a/include/boost/detail/utf8_codecvt_facet.hpp b/include/boost/detail/utf8_codecvt_facet.hpp
index ac7e7bf..b777ff9 100644
--- a/include/boost/detail/utf8_codecvt_facet.hpp
+++ b/include/boost/detail/utf8_codecvt_facet.hpp
@@ -79,25 +79,18 @@
 // specialized on those types for this to work.
 
 #include <locale>
-// for mbstate_t
-#include <wchar.h>
-// for std::size_t
-#include <cstddef>
+#include <cwchar>   // for mbstate_t
+#include <cstddef>  // for std::size_t
 
 #include <boost/config.hpp>
 #include <boost/detail/workaround.hpp>
 
+#if defined(BOOST_NO_STDC_NAMESPACE)
 namespace std {
-    #if defined(__LIBCOMO__)
-        using ::mbstate_t;
-    #elif defined(BOOST_DINKUMWARE_STDLIB) && !defined(__BORLANDC__)
-        using ::mbstate_t;
-    #elif defined(__SGI_STL_PORT)
-    #elif defined(BOOST_NO_STDC_NAMESPACE)
-        using ::mbstate_t;
-        using ::codecvt;
-    #endif
-} // namespace std
+    using ::mbstate_t;
+    using ::size_t;
+}
+#endif
 
 #if !defined(__MSL_CPP__) && !defined(__LIBCOMO__)
     #define BOOST_CODECVT_DO_LENGTH_CONST const