Update of /cvsroot/boost/boost/boost/fusion/sequence/intrinsic/ext_
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv986
Added Files:
size_s.hpp
Log Message:
segmented_size, for calculating the size of any segmented data structure
--- NEW FILE: size_s.hpp ---
/*=============================================================================
Copyright (c) 2006 Eric Niebler
Use, modification and distribution is subject to 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(FUSION_SIZE_S_08112006_1141)
#define FUSION_SIZE_S_08112006_1141
#include <boost/mpl/plus.hpp>
#include <boost/mpl/size_t.hpp>
#include <boost/type_traits/remove_reference.hpp>
#include <boost/fusion/algorithm/iteration/fold.hpp>
#include <boost/fusion/support/ext_/is_segmented.hpp>
#include <boost/fusion/sequence/intrinsic/ext_/segments.hpp>
namespace boost { namespace fusion
{
///////////////////////////////////////////////////////////////////////////
// calculates the size of any segmented data structure.
template<typename Sequence, bool IsSegmented =
traits::is_segmented<Sequence>::value>
struct segmented_size;
namespace detail
{
struct size_plus
{
template<typename Seq, typename State>
struct result
: mpl::plus<
segmented_size<typename remove_reference<Seq>::type>
, State
>
{};
};
}
///////////////////////////////////////////////////////////////////////////
template<typename Sequence, bool IsSegmented>
struct segmented_size
: result_of::fold<
typename result_of::segments<Sequence>::type
, mpl::size_t<0>
, detail::size_plus
>::type
{};
template<typename Sequence>
struct segmented_size<Sequence, false>
: result_of::size<Sequence>
{};
}}
#endif
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