1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/ossrv_pub/boost_apis/boost/mpl/is_placeholder.hpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,67 @@
     1.4 +
     1.5 +#ifndef BOOST_MPL_IS_PLACEHOLDER_HPP_INCLUDED
     1.6 +#define BOOST_MPL_IS_PLACEHOLDER_HPP_INCLUDED
     1.7 +
     1.8 +// Copyright Aleksey Gurtovoy 2001-2004
     1.9 +//
    1.10 +// Distributed under the Boost Software License, Version 1.0. 
    1.11 +// (See accompanying file LICENSE_1_0.txt or copy at 
    1.12 +// http://www.boost.org/LICENSE_1_0.txt)
    1.13 +//
    1.14 +// See http://www.boost.org/libs/mpl for documentation.
    1.15 +
    1.16 +// $Source: /cvsroot/boost/boost/boost/mpl/is_placeholder.hpp,v $
    1.17 +// $Date: 2004/09/07 08:51:31 $
    1.18 +// $Revision: 1.6 $
    1.19 +
    1.20 +#include <boost/mpl/arg_fwd.hpp>
    1.21 +#include <boost/mpl/bool.hpp>
    1.22 +#include <boost/mpl/aux_/yes_no.hpp>
    1.23 +#include <boost/mpl/aux_/type_wrapper.hpp>
    1.24 +#include <boost/mpl/aux_/nttp_decl.hpp>
    1.25 +#include <boost/mpl/aux_/config/ctps.hpp>
    1.26 +#include <boost/mpl/aux_/config/static_constant.hpp>
    1.27 +
    1.28 +namespace boost { namespace mpl {
    1.29 +
    1.30 +#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
    1.31 +
    1.32 +template< typename T >
    1.33 +struct is_placeholder
    1.34 +    : bool_<false>
    1.35 +{
    1.36 +};
    1.37 +
    1.38 +template< BOOST_MPL_AUX_NTTP_DECL(int, N) >
    1.39 +struct is_placeholder< arg<N> >
    1.40 +    : bool_<true>
    1.41 +{
    1.42 +};
    1.43 +
    1.44 +#else
    1.45 +
    1.46 +namespace aux {
    1.47 +
    1.48 +aux::no_tag is_placeholder_helper(...);
    1.49 +
    1.50 +template< BOOST_MPL_AUX_NTTP_DECL(int, N) >
    1.51 +aux::yes_tag is_placeholder_helper(aux::type_wrapper< arg<N> >*);
    1.52 +
    1.53 +} // namespace aux
    1.54 +
    1.55 +template< typename T >
    1.56 +struct is_placeholder
    1.57 +{
    1.58 +    static aux::type_wrapper<T>* get();
    1.59 +    BOOST_STATIC_CONSTANT(bool, value = 
    1.60 +          sizeof(aux::is_placeholder_helper(get())) == sizeof(aux::yes_tag)
    1.61 +        );
    1.62 +    
    1.63 +    typedef bool_<value> type;
    1.64 +};
    1.65 +
    1.66 +#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
    1.67 +
    1.68 +}}
    1.69 +
    1.70 +#endif // BOOST_MPL_IS_PLACEHOLDER_HPP_INCLUDED