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More constexpr and noexcept support.

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Note 1: Forwarding functions are specified as a C++14 constexpr since
std::forward is not a constexpr within C++11.

Note 2: Though I'm not sure why it doesn't compile, some declarations
are specified as a C++14 constexpr or non-constexpr.

Note 3: Boost.Tuple adaptation and TR1-based tuple implementations are
not constexpr.
This commit is contained in:
Kohei Takahashi
2015-03-03 02:21:02 +09:00
parent d7c918e36f
commit 2114bfca6c
280 changed files with 1107 additions and 935 deletions
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36
include/boost/fusion/support/unused.hpp
View File

@ -22,65 +22,67 @@ namespace boost { namespace fusion
{
struct unused_type
{
BOOST_FUSION_GPU_ENABLED
unused_type()
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
unused_type() BOOST_NOEXCEPT
{
}
template <typename T>
BOOST_FUSION_GPU_ENABLED
unused_type(T const&)
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
unused_type(T const&) BOOST_NOEXCEPT
{
}
template <typename T>
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
unused_type const&
operator=(T const&) const
operator=(T const&) const BOOST_NOEXCEPT
{
return *this;
}
template <typename T>
BOOST_FUSION_GPU_ENABLED
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
unused_type&
operator=(T const&)
operator=(T const&) BOOST_NOEXCEPT
{
return *this;
}
BOOST_FUSION_GPU_ENABLED
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
unused_type const&
operator=(unused_type const&) const
operator=(unused_type const&) const BOOST_NOEXCEPT
{
return *this;
}
BOOST_FUSION_GPU_ENABLED
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
unused_type&
operator=(unused_type const&)
operator=(unused_type const&) BOOST_NOEXCEPT
{
return *this;
}
};
unused_type const unused = unused_type();
BOOST_CONSTEXPR unused_type const unused = unused_type();
namespace detail
{
struct unused_only
{
BOOST_FUSION_GPU_ENABLED
unused_only(unused_type const&) {}
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
unused_only(unused_type const&) BOOST_NOEXCEPT {}
};
}
inline std::ostream& operator<<(std::ostream& out, detail::unused_only const&)
BOOST_CONSTEXPR
inline std::ostream& operator<<(std::ostream& out, detail::unused_only const&) BOOST_NOEXCEPT
{
return out;
}
inline std::istream& operator>>(std::istream& in, unused_type&)
BOOST_CONSTEXPR
inline std::istream& operator>>(std::istream& in, unused_type&) BOOST_NOEXCEPT
{
return in;
}