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/*=============================================================================
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_FUSION_GPU_ENABLED
static type
call(Iterator const& i)
{
return type(filter::iter_call(i.first));
}
};
};
}
}}
#endif
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