1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/epoc32/include/stdapis/boost/variant/static_visitor.hpp	Tue Mar 16 16:12:26 2010 +0000
     1.3 @@ -0,0 +1,97 @@
     1.4 +//-----------------------------------------------------------------------------
     1.5 +// boost variant/static_visitor.hpp header file
     1.6 +// See http://www.boost.org for updates, documentation, and revision history.
     1.7 +//-----------------------------------------------------------------------------
     1.8 +//
     1.9 +// Copyright (c) 2002-2003
    1.10 +// Eric Friedman
    1.11 +//
    1.12 +// Distributed under the Boost Software License, Version 1.0. (See
    1.13 +// accompanying file LICENSE_1_0.txt or copy at
    1.14 +// http://www.boost.org/LICENSE_1_0.txt)
    1.15 +
    1.16 +#ifndef BOOST_VARIANT_STATIC_VISITOR_HPP
    1.17 +#define BOOST_VARIANT_STATIC_VISITOR_HPP
    1.18 +
    1.19 +#include "boost/config.hpp"
    1.20 +#include "boost/detail/workaround.hpp"
    1.21 +
    1.22 +#include "boost/mpl/if.hpp"
    1.23 +#include "boost/type_traits/is_base_and_derived.hpp"
    1.24 +
    1.25 +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
    1.26 +#   include "boost/type_traits/is_same.hpp"
    1.27 +#endif
    1.28 +
    1.29 +// should be the last #include
    1.30 +#include "boost/type_traits/detail/bool_trait_def.hpp"
    1.31 +
    1.32 +namespace boost {
    1.33 +
    1.34 +//////////////////////////////////////////////////////////////////////////
    1.35 +// class template static_visitor
    1.36 +//
    1.37 +// An empty base class that typedefs the return type of a deriving static
    1.38 +// visitor. The class is analogous to std::unary_function in this role.
    1.39 +//
    1.40 +
    1.41 +namespace detail {
    1.42 +
    1.43 +    struct is_static_visitor_tag { };
    1.44 +
    1.45 +    typedef void static_visitor_default_return;
    1.46 +
    1.47 +} // namespace detail
    1.48 +
    1.49 +template <typename R = ::boost::detail::static_visitor_default_return>
    1.50 +class static_visitor
    1.51 +    : public detail::is_static_visitor_tag
    1.52 +{
    1.53 +public: // typedefs
    1.54 +
    1.55 +    typedef R result_type;
    1.56 +
    1.57 +protected: // for use as base class only
    1.58 +
    1.59 +    static_visitor() { }
    1.60 +    ~static_visitor() { }
    1.61 +
    1.62 +};
    1.63 +
    1.64 +//////////////////////////////////////////////////////////////////////////
    1.65 +// metafunction is_static_visitor
    1.66 +//
    1.67 +// Value metafunction indicates whether the specified type derives from
    1.68 +// static_visitor<...>.
    1.69 +//
    1.70 +// NOTE #1: This metafunction does NOT check whether the specified type
    1.71 +//  fulfills the requirements of the StaticVisitor concept.
    1.72 +//
    1.73 +// NOTE #2: This template never needs to be specialized!
    1.74 +//
    1.75 +
    1.76 +namespace detail {
    1.77 +
    1.78 +template <typename T>
    1.79 +struct is_static_visitor_impl
    1.80 +{
    1.81 +    BOOST_STATIC_CONSTANT(bool, value = 
    1.82 +        (::boost::is_base_and_derived< 
    1.83 +            detail::is_static_visitor_tag,
    1.84 +            T
    1.85 +        >::value));
    1.86 +};
    1.87 +
    1.88 +} // namespace detail
    1.89 +
    1.90 +BOOST_TT_AUX_BOOL_TRAIT_DEF1(
    1.91 +      is_static_visitor
    1.92 +    , T
    1.93 +    , (::boost::detail::is_static_visitor_impl<T>::value)
    1.94 +    )
    1.95 +
    1.96 +} // namespace boost
    1.97 +
    1.98 +#include "boost/type_traits/detail/bool_trait_undef.hpp"
    1.99 +
   1.100 +#endif // BOOST_VARIANT_STATIC_VISITOR_HPP