diff options
Diffstat (limited to 'contrib/llvm-project/libcxx/include/__algorithm/make_projected.h')
-rw-r--r-- | contrib/llvm-project/libcxx/include/__algorithm/make_projected.h | 47 |
1 files changed, 20 insertions, 27 deletions
diff --git a/contrib/llvm-project/libcxx/include/__algorithm/make_projected.h b/contrib/llvm-project/libcxx/include/__algorithm/make_projected.h index 3a8670111814..bb7bc7e8c0b5 100644 --- a/contrib/llvm-project/libcxx/include/__algorithm/make_projected.h +++ b/contrib/llvm-project/libcxx/include/__algorithm/make_projected.h @@ -36,44 +36,38 @@ struct _ProjectedPred { : __pred(__pred_arg), __proj(__proj_arg) {} template <class _Tp> - typename __invoke_of<_Pred&, - decltype(std::__invoke(std::declval<_Proj&>(), std::declval<_Tp>())) - >::type - _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI operator()(_Tp&& __v) const { + typename __invoke_of<_Pred&, decltype(std::__invoke(std::declval<_Proj&>(), std::declval<_Tp>())) >:: + type _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI + operator()(_Tp&& __v) const { return std::__invoke(__pred, std::__invoke(__proj, std::forward<_Tp>(__v))); } template <class _T1, class _T2> typename __invoke_of<_Pred&, decltype(std::__invoke(std::declval<_Proj&>(), std::declval<_T1>())), - decltype(std::__invoke(std::declval<_Proj&>(), std::declval<_T2>())) - >::type - _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI operator()(_T1&& __lhs, _T2&& __rhs) const { - return std::__invoke(__pred, - std::__invoke(__proj, std::forward<_T1>(__lhs)), - std::__invoke(__proj, std::forward<_T2>(__rhs))); + decltype(std::__invoke(std::declval<_Proj&>(), + std::declval<_T2>())) >::type _LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI + operator()(_T1&& __lhs, _T2&& __rhs) const { + return std::__invoke( + __pred, std::__invoke(__proj, std::forward<_T1>(__lhs)), std::__invoke(__proj, std::forward<_T2>(__rhs))); } - }; -template <class _Pred, - class _Proj, - __enable_if_t<!(!is_member_pointer<__decay_t<_Pred> >::value && - __is_identity<__decay_t<_Proj> >::value), - int> = 0> -_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ProjectedPred<_Pred, _Proj> -__make_projected(_Pred& __pred, _Proj& __proj) { +template < + class _Pred, + class _Proj, + __enable_if_t<!(!is_member_pointer<__decay_t<_Pred> >::value && __is_identity<__decay_t<_Proj> >::value), int> = 0> +_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ProjectedPred<_Pred, _Proj> __make_projected(_Pred& __pred, _Proj& __proj) { return _ProjectedPred<_Pred, _Proj>(__pred, __proj); } // Avoid creating the functor and just use the pristine comparator -- for certain algorithms, this would enable // optimizations that rely on the type of the comparator. Additionally, this results in less layers of indirection in // the call stack when the comparator is invoked, even in an unoptimized build. -template <class _Pred, - class _Proj, - __enable_if_t<!is_member_pointer<__decay_t<_Pred> >::value && - __is_identity<__decay_t<_Proj> >::value, - int> = 0> +template < + class _Pred, + class _Proj, + __enable_if_t<!is_member_pointer<__decay_t<_Pred> >::value && __is_identity<__decay_t<_Proj> >::value, int> = 0> _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _Pred& __make_projected(_Pred& __pred, _Proj&) { return __pred; } @@ -87,8 +81,7 @@ _LIBCPP_BEGIN_NAMESPACE_STD namespace ranges { template <class _Comp, class _Proj1, class _Proj2> -_LIBCPP_HIDE_FROM_ABI constexpr -decltype(auto) __make_projected_comp(_Comp& __comp, _Proj1& __proj1, _Proj2& __proj2) { +_LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) __make_projected_comp(_Comp& __comp, _Proj1& __proj1, _Proj2& __proj2) { if constexpr (__is_identity<decay_t<_Proj1>>::value && __is_identity<decay_t<_Proj2>>::value && !is_member_pointer_v<decay_t<_Comp>>) { // Avoid creating the lambda and just use the pristine comparator -- for certain algorithms, this would enable @@ -98,8 +91,8 @@ decltype(auto) __make_projected_comp(_Comp& __comp, _Proj1& __proj1, _Proj2& __p } else { return [&](auto&& __lhs, auto&& __rhs) -> bool { return std::invoke(__comp, - std::invoke(__proj1, std::forward<decltype(__lhs)>(__lhs)), - std::invoke(__proj2, std::forward<decltype(__rhs)>(__rhs))); + std::invoke(__proj1, std::forward<decltype(__lhs)>(__lhs)), + std::invoke(__proj2, std::forward<decltype(__rhs)>(__rhs))); }; } } |