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Merge pull request #237 from denzor200/denzor200-patch-3

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Fixed reverse_view
This commit is contained in:
Joel de Guzman
2022-01-16 18:10:43 +08:00
committed by GitHub
parent 13593be807 d22982e3a9
commit 23e78a5974
4 changed files with 49 additions and 6 deletions
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10
include/boost/fusion/view/reverse_view/detail/deref_data_impl.hpp
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@ -1,5 +1,6 @@
/*=============================================================================
Copyright (c) 2009 Christopher Schmidt
Copyright (c) 2021-2022 Denis Mikhailov
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)
@ -10,6 +11,7 @@
#include <boost/fusion/support/config.hpp>
#include <boost/fusion/iterator/deref_data.hpp>
#include <boost/fusion/iterator/prior.hpp>
namespace boost { namespace fusion { namespace extension
{
@ -23,14 +25,18 @@ namespace boost { namespace fusion { namespace extension
struct apply
{
typedef typename
result_of::deref_data<typename It::first_type>::type
result_of::deref_data<
typename result_of::prior<
typename It::first_type
>::type
>::type
type;
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
static type
call(It const& it)
{
return fusion::deref_data(it.first);
return fusion::deref_data(fusion::prior(it.first));
}
};
};

13
include/boost/fusion/view/reverse_view/detail/key_of_impl.hpp
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@ -1,5 +1,6 @@
/*=============================================================================
Copyright (c) 2009 Christopher Schmidt
Copyright (c) 2021-2022 Denis Mikhailov
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)
@ -10,6 +11,7 @@
#include <boost/fusion/support/config.hpp>
#include <boost/fusion/iterator/key_of.hpp>
#include <boost/fusion/iterator/prior.hpp>
namespace boost { namespace fusion { namespace extension
{
@ -21,8 +23,15 @@ namespace boost { namespace fusion { namespace extension
{
template <typename It>
struct apply
: result_of::key_of<typename It::it_type>
{};
{
typedef typename
result_of::key_of<
typename result_of::prior<
typename It::first_type
>::type
>::type
type;
};
};
}}}

13
include/boost/fusion/view/reverse_view/detail/value_of_data_impl.hpp
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@ -1,5 +1,6 @@
/*=============================================================================
Copyright (c) 2009 Christopher Schmidt
Copyright (c) 2021-2022 Denis Mikhailov
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)
@ -10,6 +11,7 @@
#include <boost/fusion/support/config.hpp>
#include <boost/fusion/iterator/value_of_data.hpp>
#include <boost/fusion/iterator/prior.hpp>
namespace boost { namespace fusion { namespace extension
{
@ -21,8 +23,15 @@ namespace boost { namespace fusion { namespace extension
{
template <typename It>
struct apply
: result_of::value_of_data<typename It::first_type>
{};
{
typedef typename
result_of::value_of_data<
typename result_of::prior<
typename It::first_type
>::type
>::type
type;
};
};
}}}

19
test/sequence/reverse_view.cpp
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@ -1,5 +1,6 @@
/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Copyright (c) 2021-2022 Denis Mikhailov
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)
@ -15,6 +16,9 @@
#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/sequence/intrinsic/at.hpp>
#include <boost/fusion/sequence/intrinsic/value_at.hpp>
#include <boost/fusion/sequence/intrinsic/has_key.hpp>
#include <boost/fusion/sequence/intrinsic/at_key.hpp>
#include <boost/fusion/sequence/intrinsic/value_at_key.hpp>
#include <boost/fusion/iterator/next.hpp>
#include <boost/fusion/iterator/prior.hpp>
#include <boost/fusion/iterator/deref.hpp>
@ -102,6 +106,21 @@ main()
BOOST_TEST((at_c<2>(rev) == pair2("two")));
BOOST_TEST((at_c<3>(rev) == pair1("one")));
BOOST_TEST((at_c<4>(rev) == pair0("zero")));
BOOST_TEST(( has_key< boost::mpl::int_<0> >(rev)
&& has_key< boost::mpl::int_<4> >(rev)
&& !has_key< boost::mpl::int_<-1> >(rev)
&& !has_key< boost::mpl::int_<5> >(rev) ));
BOOST_TEST((at_key< boost::mpl::int_<0> >(rev) == "zero"));
BOOST_TEST((at_key< boost::mpl::int_<1> >(rev) == "one"));
BOOST_TEST((at_key< boost::mpl::int_<2> >(rev) == "two"));
BOOST_TEST((at_key< boost::mpl::int_<3> >(rev) == "three"));
BOOST_TEST((at_key< boost::mpl::int_<4> >(rev) == "four"));
BOOST_TEST(( (at_key< boost::mpl::int_<0> >(rev) = "new_zero") == "new_zero"
&& at_key< boost::mpl::int_<0> >(rev) == "new_zero" ));
BOOST_MPL_ASSERT((boost::mpl::and_<result_of::has_key<view_type, boost::mpl::int_<0> >
, boost::mpl::not_<result_of::has_key<view_type, boost::mpl::int_<-1> > > >));
BOOST_MPL_ASSERT((boost::is_same<result_of::at_key<view_type, boost::mpl::int_<0>>::type, std::string&>));
BOOST_MPL_ASSERT((boost::is_same<result_of::value_at_key<view_type, boost::mpl::int_<0> >::type, std::string>));
}
return boost::report_errors();