80 lines
2.6 KiB
Plaintext
80 lines
2.6 KiB
Plaintext
|
/*=============================================================================
|
||
|
|
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_06052005_0900)
|
||
|
|
#define FUSION_NEXT_IMPL_06052005_0900
|
||
|
|
|
||
|
|
#include <boost/fusion/support/config.hpp>
|
||
|
|
#include <boost/fusion/algorithm/query/detail/find_if.hpp>
|
||
|
|
#include <boost/fusion/iterator/value_of.hpp>
|
||
|
|
#include <boost/mpl/eval_if.hpp>
|
||
|
|
#include <boost/mpl/identity.hpp>
|
||
|
|
#include <boost/mpl/lambda.hpp>
|
||
|
|
#include <boost/mpl/quote.hpp>
|
||
|
|
#include <boost/mpl/bind.hpp>
|
||
|
|
#include <boost/mpl/placeholders.hpp>
|
||
|
|
|
||
|
|
namespace boost { namespace fusion
|
||
|
|
{
|
||
|
|
struct filter_view_iterator_tag;
|
||
|
|
|
||
|
|
template <typename Category, typename First, typename Last, typename Pred>
|
||
|
|
struct filter_iterator;
|
||
|
|
|
||
|
|
namespace extension
|
||
|
|
{
|
||
|
|
template <typename Tag>
|
||
|
|
struct next_impl;
|
||
|
|
|
||
|
|
template <>
|
||
|
|
struct next_impl<filter_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::pred_type pred_type;
|
||
|
|
typedef typename Iterator::category category;
|
||
|
|
|
||
|
|
typedef typename
|
||
|
|
mpl::eval_if<
|
||
|
|
result_of::equal_to<first_type, last_type>
|
||
|
|
, mpl::identity<last_type>
|
||
|
|
, result_of::next<first_type>
|
||
|
|
>::type
|
||
|
|
next_type;
|
||
|
|
|
||
|
|
typedef typename
|
||
|
|
detail::static_find_if<
|
||
|
|
next_type
|
||
|
|
, last_type
|
||
|
|
, mpl::bind1<
|
||
|
|
typename mpl::lambda<pred_type>::type
|
||
|
|
, mpl::bind1<mpl::quote1<result_of::value_of>,mpl::_1>
|
||
|
|
>
|
||
|
|
>
|
||
|
|
filter;
|
||
|
|
|
||
|
|
typedef filter_iterator<
|
||
|
|
category, typename filter::type, last_type, pred_type>
|
||
|
|
type;
|
||
|
|
|
||
|
|
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
||
|
|
static type
|
||
|
|
call(Iterator const& i)
|
||
|
|
{
|
||
|
|
return type(filter::iter_call(i.first));
|
||
|
|
}
|
||
|
|
};
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|