| /*============================================================================= |
| Copyright (c) 2011 Eric Niebler |
| |
| 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) |
| ==============================================================================*/ |
| #if !defined(BOOST_FUSION_SEGMENTED_SIZE_08112006_1141) |
| #define BOOST_FUSION_SEGMENTED_SIZE_08112006_1141 |
| |
| #include <boost/fusion/support/config.hpp> |
| #include <boost/type_traits/add_const.hpp> |
| #include <boost/type_traits/remove_reference.hpp> |
| #include <boost/mpl/fold.hpp> |
| #include <boost/mpl/plus.hpp> |
| #include <boost/mpl/size_t.hpp> |
| #include <boost/mpl/placeholders.hpp> |
| #include <boost/fusion/sequence/intrinsic_fwd.hpp> |
| #include <boost/fusion/mpl/begin.hpp> |
| #include <boost/fusion/mpl/end.hpp> |
| #include <boost/fusion/support/is_segmented.hpp> |
| |
| namespace boost { namespace fusion { namespace detail |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| // calculates the size of any segmented data structure. |
| template<typename Sequence> |
| struct segmented_size; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template<typename Sequence, bool IsSegmented = traits::is_segmented<Sequence>::value> |
| struct segmented_size_impl |
| : mpl::fold< |
| typename remove_reference< |
| typename add_const< |
| typename result_of::segments<Sequence>::type |
| >::type |
| >::type |
| , mpl::size_t<0> |
| , mpl::plus<mpl::_1, segmented_size<remove_reference<mpl::_2> > > |
| >::type |
| {}; |
| |
| template<typename Sequence> |
| struct segmented_size_impl<Sequence, false> |
| : result_of::size<Sequence>::type |
| {}; |
| |
| template<typename Sequence> |
| struct segmented_size |
| : segmented_size_impl<Sequence> |
| {}; |
| |
| }}} |
| |
| #endif |
