diff options
Diffstat (limited to 'src/corelib/global/qtypeinfo.h')
| -rw-r--r-- | src/corelib/global/qtypeinfo.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/corelib/global/qtypeinfo.h b/src/corelib/global/qtypeinfo.h index 2f7bb414b5..e45347ee10 100644 --- a/src/corelib/global/qtypeinfo.h +++ b/src/corelib/global/qtypeinfo.h @@ -464,6 +464,17 @@ struct has_ostream_operator<Stream, T, std::void_t<decltype(detail::reference<St template <typename Stream, typename T> constexpr bool has_ostream_operator_v = has_ostream_operator<Stream, T>::value; +template <typename Stream, typename, typename = void> +struct has_istream_operator : std::false_type {}; +template <typename Stream, typename T> +struct has_istream_operator<Stream, T, std::void_t<decltype(detail::reference<Stream>() >> detail::reference<T>())>> + : std::true_type {}; +template <typename Stream, typename T> +constexpr bool has_istream_operator_v = has_istream_operator<Stream, T>::value; + +template <typename Stream, typename T> +constexpr bool has_stream_operator_v = has_ostream_operator_v<Stream, T> && has_istream_operator_v<Stream, T>; + } |