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filter_view: Removed redundant filter operation

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Iterator constructor always filters and determines right position.
This commit is contained in:
Kohei Takahashi
2018-07-07 08:17:26 +09:00
parent cc3fbc4f5d
commit 48f8af3e73
1 changed files with 5 additions and 21 deletions
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26
include/boost/fusion/view/filter_view/detail/next_impl.hpp
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@ -1,5 +1,6 @@
/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Copyright (c) 2018 Kohei Takahashi
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)
@ -8,14 +9,10 @@
#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/fusion/iterator/next.hpp>
#include <boost/fusion/iterator/equal_to.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
{
@ -48,26 +45,13 @@ namespace boost { namespace fusion
>::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;
typedef filter_iterator<category, next_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));
return type(fusion::next(i.first));
}
};
};