mpl/aux_/is_msvc_eti_arg.hpp

0001
0002 #ifndef BOOST_MPL_AUX_IS_MSVC_ETI_ARG_HPP_INCLUDED
0003 #define BOOST_MPL_AUX_IS_MSVC_ETI_ARG_HPP_INCLUDED
0004
0005 // Copyright Aleksey Gurtovoy 2001-2004
0006 //
0007 // Distributed under the Boost Software License, Version 1.0.
0008 // (See accompanying file LICENSE_1_0.txt or copy at
0009 // http://www.boost.org/LICENSE_1_0.txt)
0010 //
0011 // See http://www.boost.org/libs/mpl for documentation.
0012
0013 // $Id$
0014 // $Date$
0015 // $Revision$
0016
0017 #include <boost/mpl/aux_/yes_no.hpp>
0018 #include <boost/mpl/aux_/config/eti.hpp>
0019 #include <boost/mpl/aux_/config/static_constant.hpp>
0020
0021 namespace boost { namespace mpl { namespace aux {
0022
0023 #if defined(BOOST_MPL_CFG_MSVC_ETI_BUG)
0024
0025 #if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG)
0026
0027 template< typename T >
0028 struct is_msvc_eti_arg
0029 {
0030     BOOST_STATIC_CONSTANT(bool, value = false);
0031 };
0032
0033 #else // BOOST_MPL_CFG_MSVC_60_ETI_BUG
0034
0035 struct eti_int_convertible
0036 {
0037     eti_int_convertible(int);
0038 };
0039
0040 template< typename T >
0041 struct is_msvc_eti_arg
0042 {
0043     static no_tag test(...);
0044     static yes_tag test(eti_int_convertible);
0045     static T& get();
0046
0047     BOOST_STATIC_CONSTANT(bool, value =
0048           sizeof(test(get())) == sizeof(yes_tag)
0049         );
0050 };
0051
0052 #endif
0053
0054 template<>
0055 struct is_msvc_eti_arg<int>
0056 {
0057     BOOST_STATIC_CONSTANT(bool, value = true);
0058 };
0059
0060 #endif // BOOST_MPL_CFG_MSVC_ETI_BUG
0061
0062 }}}
0063
0064 #endif // BOOST_MPL_AUX_IS_MSVC_ETI_ARG_HPP_INCLUDED