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Improve support for constexpr in fusion::nil and its iterators.

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This commit is contained in:
Louis Dionne
2014-10-27 08:55:25 -04:00
parent acf25e3986
commit cdfb1a46b3
4 changed files with 38 additions and 12 deletions
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20
include/boost/fusion/container/list/cons_iterator.hpp
View File

@ -55,45 +55,45 @@ namespace boost { namespace fusion
typedef cons_iterator_identity<
add_const<nil_>::type>
identity;
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
nil_iterator() {}
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
explicit nil_iterator(nil_ const&) {}
};
template <>
struct cons_iterator<nil_> : nil_iterator
{
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
cons_iterator() {}
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
explicit cons_iterator(nil_ const&) {}
};
template <>
struct cons_iterator<nil_ const> : nil_iterator
{
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
cons_iterator() {}
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
explicit cons_iterator(nil_ const&) {}
};
template <>
struct cons_iterator<list<> > : nil_iterator
{
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
cons_iterator() {}
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
explicit cons_iterator(nil_ const&) {}
};
template <>
struct cons_iterator<list<> const> : nil_iterator
{
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
cons_iterator() {}
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
explicit cons_iterator(nil_ const&) {}
};
}}

4
include/boost/fusion/container/list/nil.hpp
View File

@ -31,11 +31,11 @@ namespace boost { namespace fusion
typedef void_ car_type;
typedef void_ cdr_type;
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
nil_() {}
template <typename Iterator>
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
nil_(Iterator const& /*iter*/, mpl::true_ /*this_is_an_iterator*/)
{}