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Revert mp_or; add mp_void; update documentation

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This commit is contained in:
Peter Dimov
2017-05-24 01:37:49 +03:00
parent 07cac40f3d
commit 6b1a2f6156
3 changed files with 85 additions and 47 deletions
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49
include/boost/mp11/function.hpp
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@@ -19,9 +19,22 @@ namespace boost
namespace mp11
{
// mp_void<T...>
namespace detail
{
template<class... T> struct mp_void_impl
{
using type = void;
};
} // namespace detail
template<class... T> using mp_void = typename detail::mp_void_impl<T...>::type;
// mp_and<T...>, mp_all<T...>
#if BOOST_WORKAROUND( BOOST_MSVC, < 1900 )
#if BOOST_WORKAROUND( BOOST_MSVC, < 1910 )
namespace detail
{
@@ -64,9 +77,7 @@ template<class L, class E = void> struct mp_and_impl
using type = mp_false;
};
void mp_and_impl_f(...);
template<class... T> struct mp_and_impl< mp_list<T...>, decltype( mp_and_impl_f( mp_if<T, int>()... ) ) >
template<class... T> struct mp_and_impl< mp_list<T...>, mp_void<mp_if<T, void>...> >
{
using type = mp_true;
};
@@ -78,10 +89,7 @@ template<class... T> using mp_all = typename detail::mp_and_impl<mp_list<T...>>:
#endif
// mp_or<T...>, mp_any<T...>
#if BOOST_WORKAROUND( BOOST_MSVC, < 1900 )
// mp_or<T...>
namespace detail
{
@@ -111,32 +119,9 @@ template<class T1, class... T> struct mp_or_impl<T1, T...>
} // namespace detail
// mp_any<T...>
template<class... T> using mp_any = mp_bool< mp_count_if< mp_list<T...>, mp_to_bool >::value != 0 >;
#else
namespace detail
{
template<class L, class E = void> struct mp_or_impl
{
using type = mp_true;
};
void mp_and_impl_f(...);
template<class... T> struct mp_or_impl< mp_list<T...>, decltype( mp_and_impl_f( mp_if<mp_not<T>, int>()... ) ) >
{
using type = mp_false;
};
} // namespace detail
template<class... T> using mp_or = typename detail::mp_or_impl<mp_list<T...>>::type;
template<class... T> using mp_any = typename detail::mp_or_impl<mp_list<T...>>::type;
#endif
// mp_same<T...>
namespace detail
{