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.
76 lines
2.4 KiB
76 lines
2.4 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_NEXT_IMPL_07162005_0136)
|
|
#define FUSION_NEXT_IMPL_07162005_0136
|
|
|
|
#include <boost/fusion/support/config.hpp>
|
|
#include <boost/fusion/iterator/next.hpp>
|
|
#include <boost/fusion/iterator/equal_to.hpp>
|
|
#include <boost/mpl/if.hpp>
|
|
|
|
namespace boost { namespace fusion
|
|
{
|
|
struct joint_view_iterator_tag;
|
|
|
|
template <typename Category, typename First, typename Last, typename Concat>
|
|
struct joint_view_iterator;
|
|
|
|
namespace extension
|
|
{
|
|
template <typename Tag>
|
|
struct next_impl;
|
|
|
|
template <>
|
|
struct next_impl<joint_view_iterator_tag>
|
|
{
|
|
template <typename Iterator>
|
|
struct apply
|
|
{
|
|
typedef typename Iterator::first_type first_type;
|
|
typedef typename Iterator::last_type last_type;
|
|
typedef typename Iterator::concat_type concat_type;
|
|
typedef typename Iterator::category category;
|
|
typedef typename result_of::next<first_type>::type next_type;
|
|
typedef result_of::equal_to<next_type, last_type> equal_to;
|
|
|
|
typedef typename
|
|
mpl::if_<
|
|
equal_to
|
|
, concat_type
|
|
, joint_view_iterator<category, next_type, last_type, concat_type>
|
|
>::type
|
|
type;
|
|
|
|
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
static type
|
|
call(Iterator const& i, mpl::true_)
|
|
{
|
|
return i.concat;
|
|
}
|
|
|
|
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
static type
|
|
call(Iterator const& i, mpl::false_)
|
|
{
|
|
return type(fusion::next(i.first), i.concat);
|
|
}
|
|
|
|
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
static type
|
|
call(Iterator const& i)
|
|
{
|
|
return call(i, equal_to());
|
|
}
|
|
};
|
|
};
|
|
}
|
|
}}
|
|
|
|
#endif
|
|
|
|
|