You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.5 KiB
87 lines
2.5 KiB
/*=============================================================================
|
|
Copyright (c) 2001-2011 Joel de Guzman
|
|
|
|
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(FUSION_SIZE_05052005_0214)
|
|
#define FUSION_SIZE_05052005_0214
|
|
|
|
#include <boost/fusion/support/config.hpp>
|
|
#include <boost/utility/enable_if.hpp>
|
|
#include <boost/mpl/if.hpp>
|
|
#include <boost/mpl/int.hpp>
|
|
#include <boost/fusion/sequence/intrinsic_fwd.hpp>
|
|
#include <boost/fusion/support/tag_of.hpp>
|
|
#include <boost/fusion/support/is_segmented.hpp>
|
|
#include <boost/fusion/sequence/intrinsic/detail/segmented_size.hpp>
|
|
|
|
namespace boost { namespace fusion
|
|
{
|
|
// Special tags:
|
|
struct sequence_facade_tag;
|
|
struct boost_tuple_tag; // boost::tuples::tuple tag
|
|
struct boost_array_tag; // boost::array tag
|
|
struct mpl_sequence_tag; // mpl sequence tag
|
|
struct std_pair_tag; // std::pair tag
|
|
|
|
namespace extension
|
|
{
|
|
template <typename Tag>
|
|
struct size_impl
|
|
{
|
|
template<typename Sequence>
|
|
struct unsegmented_size : Sequence::size {};
|
|
|
|
template <typename Sequence>
|
|
struct apply
|
|
: mpl::if_<
|
|
traits::is_segmented<Sequence>
|
|
, detail::segmented_size<Sequence>
|
|
, unsegmented_size<Sequence>
|
|
>::type
|
|
{};
|
|
};
|
|
|
|
template <>
|
|
struct size_impl<sequence_facade_tag>
|
|
{
|
|
template <typename Sequence>
|
|
struct apply : Sequence::template size<Sequence> {};
|
|
};
|
|
|
|
template <>
|
|
struct size_impl<boost_tuple_tag>;
|
|
|
|
template <>
|
|
struct size_impl<boost_array_tag>;
|
|
|
|
template <>
|
|
struct size_impl<mpl_sequence_tag>;
|
|
|
|
template <>
|
|
struct size_impl<std_pair_tag>;
|
|
}
|
|
|
|
namespace result_of
|
|
{
|
|
template <typename Sequence>
|
|
struct size
|
|
: mpl::int_<
|
|
extension::size_impl<typename detail::tag_of<Sequence>::type>
|
|
::template apply<Sequence>::type::value
|
|
> {};
|
|
}
|
|
|
|
template <typename Sequence>
|
|
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
inline typename result_of::size<Sequence>::type
|
|
size(Sequence const&)
|
|
{
|
|
typedef typename result_of::size<Sequence>::type result;
|
|
return result();
|
|
}
|
|
}}
|
|
|
|
#endif
|