diff options
Diffstat (limited to 'contrib/llvm-project/libcxx/include/__iterator/iter_swap.h')
| -rw-r--r-- | contrib/llvm-project/libcxx/include/__iterator/iter_swap.h | 100 |
1 files changed, 45 insertions, 55 deletions
diff --git a/contrib/llvm-project/libcxx/include/__iterator/iter_swap.h b/contrib/llvm-project/libcxx/include/__iterator/iter_swap.h index 23d3e4009f53..52c3f095e7fb 100644 --- a/contrib/llvm-project/libcxx/include/__iterator/iter_swap.h +++ b/contrib/llvm-project/libcxx/include/__iterator/iter_swap.h @@ -37,77 +37,67 @@ _LIBCPP_BEGIN_NAMESPACE_STD namespace ranges { namespace __iter_swap { - template<class _I1, class _I2> - void iter_swap(_I1, _I2) = delete; +template <class _I1, class _I2> +void iter_swap(_I1, _I2) = delete; - template<class _T1, class _T2> - concept __unqualified_iter_swap = - (__class_or_enum<remove_cvref_t<_T1>> || __class_or_enum<remove_cvref_t<_T2>>) && - requires (_T1&& __x, _T2&& __y) { +template <class _T1, class _T2> +concept __unqualified_iter_swap = + (__class_or_enum<remove_cvref_t<_T1>> || __class_or_enum<remove_cvref_t<_T2>>)&&requires(_T1&& __x, _T2&& __y) { // NOLINTNEXTLINE(libcpp-robust-against-adl) iter_swap ADL calls should only be made through ranges::iter_swap iter_swap(std::forward<_T1>(__x), std::forward<_T2>(__y)); }; - template<class _T1, class _T2> - concept __readable_swappable = +template <class _T1, class _T2> +concept __readable_swappable = indirectly_readable<_T1> && indirectly_readable<_T2> && swappable_with<iter_reference_t<_T1>, iter_reference_t<_T2>>; - - struct __fn { - // NOLINTBEGIN(libcpp-robust-against-adl) iter_swap ADL calls should only be made through ranges::iter_swap - template <class _T1, class _T2> - requires __unqualified_iter_swap<_T1, _T2> - _LIBCPP_HIDE_FROM_ABI - constexpr void operator()(_T1&& __x, _T2&& __y) const - noexcept(noexcept(iter_swap(std::forward<_T1>(__x), std::forward<_T2>(__y)))) - { - (void)iter_swap(std::forward<_T1>(__x), std::forward<_T2>(__y)); - } - // NOLINTEND(libcpp-robust-against-adl) - - template <class _T1, class _T2> - requires (!__unqualified_iter_swap<_T1, _T2>) && - __readable_swappable<_T1, _T2> - _LIBCPP_HIDE_FROM_ABI - constexpr void operator()(_T1&& __x, _T2&& __y) const - noexcept(noexcept(ranges::swap(*std::forward<_T1>(__x), *std::forward<_T2>(__y)))) - { - ranges::swap(*std::forward<_T1>(__x), *std::forward<_T2>(__y)); - } - - template <class _T1, class _T2> - requires (!__unqualified_iter_swap<_T1, _T2> && // - !__readable_swappable<_T1, _T2>) && // - indirectly_movable_storable<_T1, _T2> && // - indirectly_movable_storable<_T2, _T1> - _LIBCPP_HIDE_FROM_ABI - constexpr void operator()(_T1&& __x, _T2&& __y) const +struct __fn { + // NOLINTBEGIN(libcpp-robust-against-adl) iter_swap ADL calls should only be made through ranges::iter_swap + template <class _T1, class _T2> + requires __unqualified_iter_swap<_T1, _T2> + _LIBCPP_HIDE_FROM_ABI constexpr void operator()(_T1&& __x, _T2&& __y) const + noexcept(noexcept(iter_swap(std::forward<_T1>(__x), std::forward<_T2>(__y)))) { + (void)iter_swap(std::forward<_T1>(__x), std::forward<_T2>(__y)); + } + // NOLINTEND(libcpp-robust-against-adl) + + template <class _T1, class _T2> + requires(!__unqualified_iter_swap<_T1, _T2>) && __readable_swappable<_T1, _T2> + _LIBCPP_HIDE_FROM_ABI constexpr void operator()(_T1&& __x, _T2&& __y) const + noexcept(noexcept(ranges::swap(*std::forward<_T1>(__x), *std::forward<_T2>(__y)))) { + ranges::swap(*std::forward<_T1>(__x), *std::forward<_T2>(__y)); + } + + template <class _T1, class _T2> + requires(!__unqualified_iter_swap<_T1, _T2> && // + !__readable_swappable<_T1, _T2>) && // + indirectly_movable_storable<_T1, _T2> && // + indirectly_movable_storable<_T2, _T1> + _LIBCPP_HIDE_FROM_ABI constexpr void operator()(_T1&& __x, _T2&& __y) const noexcept(noexcept(iter_value_t<_T2>(ranges::iter_move(__y))) && // - noexcept(*__y = ranges::iter_move(__x)) && // - noexcept(*std::forward<_T1>(__x) = std::declval<iter_value_t<_T2>>())) - { - iter_value_t<_T2> __old(ranges::iter_move(__y)); - *__y = ranges::iter_move(__x); - *std::forward<_T1>(__x) = std::move(__old); - } - }; + noexcept(*__y = ranges::iter_move(__x)) && // + noexcept(*std::forward<_T1>(__x) = std::declval<iter_value_t<_T2>>())) { + iter_value_t<_T2> __old(ranges::iter_move(__y)); + *__y = ranges::iter_move(__x); + *std::forward<_T1>(__x) = std::move(__old); + } +}; } // namespace __iter_swap inline namespace __cpo { - inline constexpr auto iter_swap = __iter_swap::__fn{}; +inline constexpr auto iter_swap = __iter_swap::__fn{}; } // namespace __cpo } // namespace ranges -template<class _I1, class _I2 = _I1> +template <class _I1, class _I2 = _I1> concept indirectly_swappable = - indirectly_readable<_I1> && indirectly_readable<_I2> && - requires(const _I1 __i1, const _I2 __i2) { - ranges::iter_swap(__i1, __i1); - ranges::iter_swap(__i2, __i2); - ranges::iter_swap(__i1, __i2); - ranges::iter_swap(__i2, __i1); - }; + indirectly_readable<_I1> && indirectly_readable<_I2> && requires(const _I1 __i1, const _I2 __i2) { + ranges::iter_swap(__i1, __i1); + ranges::iter_swap(__i2, __i2); + ranges::iter_swap(__i1, __i2); + ranges::iter_swap(__i2, __i1); + }; #endif // _LIBCPP_STD_VER >= 20 |