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1 | // Copyright Daniel Wallin, David Abrahams 2005. |
2 | // Distributed under the Boost Software License, Version 1.0. | |
3 | // (See accompanying file LICENSE_1_0.txt or copy at | |
7c673cae FG |
4 | // http://www.boost.org/LICENSE_1_0.txt) |
5 | ||
6 | #ifndef BOOST_PARAMETER_VOID_050329_HPP | |
7 | #define BOOST_PARAMETER_VOID_050329_HPP | |
8 | ||
9 | namespace boost { namespace parameter { | |
10 | ||
92f5a8d4 TL |
11 | // A placemarker for "no argument passed." |
12 | // MAINTAINER NOTE: Do not make this into a metafunction | |
13 | struct void_ | |
14 | { | |
15 | }; | |
16 | }} // namespace boost::parameter | |
7c673cae | 17 | |
92f5a8d4 | 18 | namespace boost { namespace parameter { namespace aux { |
7c673cae | 19 | |
92f5a8d4 TL |
20 | inline ::boost::parameter::void_& void_reference() |
21 | { | |
22 | static ::boost::parameter::void_ instance; | |
23 | return instance; | |
24 | } | |
25 | }}} // namespace boost::parameter::aux | |
7c673cae | 26 | |
92f5a8d4 | 27 | #include <boost/config/workaround.hpp> |
7c673cae | 28 | |
92f5a8d4 TL |
29 | #if BOOST_WORKAROUND(__SUNPRO_CC, BOOST_TESTED_AT(0x580)) |
30 | ||
31 | namespace boost { namespace parameter { namespace aux { | |
32 | ||
33 | typedef void* voidstar; | |
34 | }}} // namespace boost::parameter::aux | |
7c673cae | 35 | |
92f5a8d4 TL |
36 | #endif |
37 | #endif // include guard | |
7c673cae | 38 |