150 lines
4.8 KiB
Plaintext
150 lines
4.8 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_FOR_EACH_05052005_1028)
|
|
#define FUSION_FOR_EACH_05052005_1028
|
|
|
|
#include <boost/fusion/support/config.hpp>
|
|
#include <boost/fusion/sequence/intrinsic/begin.hpp>
|
|
#include <boost/fusion/sequence/intrinsic/end.hpp>
|
|
#include <boost/fusion/iterator/equal_to.hpp>
|
|
#include <boost/fusion/iterator/next.hpp>
|
|
#include <boost/fusion/iterator/deref.hpp>
|
|
#include <boost/fusion/iterator/distance.hpp>
|
|
#include <boost/fusion/support/category_of.hpp>
|
|
#include <boost/mpl/bool.hpp>
|
|
|
|
namespace boost { namespace fusion {
|
|
namespace detail
|
|
{
|
|
template <typename First, typename Last, typename F>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
inline void
|
|
for_each_linear(First const&, Last const&, F const&, mpl::true_)
|
|
{
|
|
}
|
|
|
|
template <typename First, typename Last, typename F>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
inline void
|
|
for_each_linear(First const& first, Last const& last, F const& f, mpl::false_)
|
|
{
|
|
f(*first);
|
|
detail::for_each_linear(fusion::next(first), last, f,
|
|
result_of::equal_to<typename result_of::next<First>::type, Last>());
|
|
}
|
|
|
|
|
|
template <typename Sequence, typename F, typename Tag>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
inline void
|
|
for_each_dispatch(Sequence& seq, F const& f, Tag)
|
|
{
|
|
detail::for_each_linear(
|
|
fusion::begin(seq)
|
|
, fusion::end(seq)
|
|
, f
|
|
, result_of::equal_to<
|
|
typename result_of::begin<Sequence>::type
|
|
, typename result_of::end<Sequence>::type>());
|
|
}
|
|
|
|
template<int N>
|
|
struct for_each_unrolled
|
|
{
|
|
template<typename I0, typename F>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
static void call(I0 const& i0, F const& f)
|
|
{
|
|
f(*i0);
|
|
typedef typename result_of::next<I0>::type I1;
|
|
I1 i1(fusion::next(i0));
|
|
f(*i1);
|
|
typedef typename result_of::next<I1>::type I2;
|
|
I2 i2(fusion::next(i1));
|
|
f(*i2);
|
|
typedef typename result_of::next<I2>::type I3;
|
|
I3 i3(fusion::next(i2));
|
|
f(*i3);
|
|
for_each_unrolled<N-4>::call(fusion::next(i3), f);
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct for_each_unrolled<3>
|
|
{
|
|
template<typename I0, typename F>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
static void call(I0 const& i0, F const& f)
|
|
{
|
|
f(*i0);
|
|
typedef typename result_of::next<I0>::type I1;
|
|
I1 i1(fusion::next(i0));
|
|
f(*i1);
|
|
typedef typename result_of::next<I1>::type I2;
|
|
I2 i2(fusion::next(i1));
|
|
f(*i2);
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct for_each_unrolled<2>
|
|
{
|
|
template<typename I0, typename F>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
static void call(I0 const& i0, F const& f)
|
|
{
|
|
f(*i0);
|
|
typedef typename result_of::next<I0>::type I1;
|
|
I1 i1(fusion::next(i0));
|
|
f(*i1);
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct for_each_unrolled<1>
|
|
{
|
|
template<typename I0, typename F>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
static void call(I0 const& i0, F const& f)
|
|
{
|
|
f(*i0);
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct for_each_unrolled<0>
|
|
{
|
|
template<typename It, typename F>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
static void call(It const&, F const&)
|
|
{
|
|
}
|
|
};
|
|
|
|
template <typename Sequence, typename F>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
inline void
|
|
for_each_dispatch(Sequence& seq, F const& f, random_access_traversal_tag)
|
|
{
|
|
typedef typename result_of::begin<Sequence>::type begin;
|
|
typedef typename result_of::end<Sequence>::type end;
|
|
for_each_unrolled<result_of::distance<begin, end>::type::value>::call(fusion::begin(seq), f);
|
|
}
|
|
|
|
template <typename Sequence, typename F>
|
|
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
|
|
inline void
|
|
for_each(Sequence& seq, F const& f, mpl::false_) // unsegmented implementation
|
|
{
|
|
detail::for_each_dispatch(seq, f, typename traits::category_of<Sequence>::type());
|
|
}
|
|
}}}
|
|
|
|
|
|
#endif
|
|
|