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[lyx.git] / boost / boost / mpl / void.hpp

diff --git a/boost/boost/mpl/void.hpp b/boost/boost/mpl/void.hpp
index 2f6c06b874906cd687e4d6766df4c9ca66fb8327..f464acb551e02de1d9a62d3e91e2175e25ca65cd 100644 (file)
--- a/boost/boost/mpl/void.hpp
+++ b/boost/boost/mpl/void.hpp
@@ -1,49 +1,76 @@
-//-----------------------------------------------------------------------------
-// boost mpl/void.hpp header file
-// See http://www.boost.org for updates, documentation, and revision history.
-//-----------------------------------------------------------------------------
-//
-// Copyright (c) 2001-02
-// Peter Dimov, Aleksey Gurtovoy
-//
-// Permission to use, copy, modify, distribute and sell this software
-// and its documentation for any purpose is hereby granted without fee, 
-// provided that the above copyright notice appears in all copies and 
-// that both the copyright notice and this permission notice appear in 
-// supporting documentation. No representations are made about the 
-// suitability of this software for any purpose. It is provided "as is" 
-// without express or implied warranty.
 
 #ifndef BOOST_MPL_VOID_HPP_INCLUDED
 #define BOOST_MPL_VOID_HPP_INCLUDED
 
-#include "boost/mpl/bool_c.hpp"
-#include "boost/config.hpp"
+// Copyright Aleksey Gurtovoy 2001-2004
+//
+// 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/mpl for documentation.
+
+// $Id: void.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
+// $Revision: 49267 $
 
-namespace boost {
-namespace mpl {
+#include <boost/mpl/void_fwd.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/aux_/na_spec.hpp>
+#include <boost/mpl/aux_/config/msvc.hpp>
+#include <boost/mpl/aux_/config/workaround.hpp>
 
-struct void_;
+BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
+
+//  [JDG Feb-4-2003] made void_ a complete type to allow it to be
+//  instantiated so that it can be passed in as an object that can be
+//  used to select an overloaded function. Possible use includes signaling
+//  a zero arity functor evaluation call.
+struct void_ { typedef void_ type; };
+
+BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
+
+namespace boost { namespace mpl {
 
 template< typename T >
 struct is_void_
-    : false_c
+    : false_
 {
-#if defined(BOOST_MSVC) && BOOST_MSVC < 1300
-    using false_c::value;
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+    using false_::value;
 #endif
 };
 
 template<>
 struct is_void_<void_>
-    : true_c
+    : true_
 {
-#if defined(BOOST_MSVC) && BOOST_MSVC < 1300
-    using true_c::value;
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+    using true_::value;
 #endif
 };
 
-} // namespace mpl
-} // namespace boost
+template< typename T >
+struct is_not_void_
+    : true_
+{
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+    using true_::value;
+#endif
+};
+
+template<>
+struct is_not_void_<void_>
+    : false_
+{
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+    using false_::value;
+#endif
+};
+
+BOOST_MPL_AUX_NA_SPEC(1, is_void_)
+BOOST_MPL_AUX_NA_SPEC(1, is_not_void_)
+
+}}
 
 #endif // BOOST_MPL_VOID_HPP_INCLUDED