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fix mp_replace_at with msvc-12

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Jonathan Poelen
2023-06-23 01:18:48 +02:00
parent 49747e7e48
commit 2c96255255
1 changed files with 14 additions and 0 deletions
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include/boost/mp11/algorithm.hpp
+14
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@@ -1042,6 +1042,8 @@ template<class L, class Q> using mp_any_of_q = mp_any_of<L, Q::template fn>;
namespace detail
{
#if ! BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1900 )
template<class I> struct mp_replace_at_impl_p
{
template<class T1, class T2> using _p = std::is_same<T2, I>;
@@ -1052,12 +1054,24 @@ template<class W> struct mp_replace_at_impl_f
template<class T1, class T2> using _f = W;
};
#endif
template<class L, class I, class W> struct mp_replace_at_impl
{
static_assert( I::value >= 0, "mp_replace_at<L, I, W>: I must not be negative" );
#if ! BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1900 )
template<class T1, class T2> using _p = std::is_same<T2, mp_size_t<I::value>>;
template<class T1, class T2> using _f = W;
using type = mp_transform_if<_p, _f, L, mp_iota<mp_size<L> > >;
#else
using type = mp_transform_if<mp_replace_at_impl_p<mp_size_t<I::value>>::template _p, mp_replace_at_impl_f<W>::template _f, L, mp_iota<mp_size<L> > >;
#endif
};
} // namespace detail