diff options
Diffstat (limited to 'libcxx/include/__algorithm/ranges_replace_copy_if.h')
| -rw-r--r-- | libcxx/include/__algorithm/ranges_replace_copy_if.h | 72 |
1 files changed, 42 insertions, 30 deletions
diff --git a/libcxx/include/__algorithm/ranges_replace_copy_if.h b/libcxx/include/__algorithm/ranges_replace_copy_if.h index 2a908e2057af..7602e8a14487 100644 --- a/libcxx/include/__algorithm/ranges_replace_copy_if.h +++ b/libcxx/include/__algorithm/ranges_replace_copy_if.h @@ -10,19 +10,14 @@ #define _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_IF_H #include <__algorithm/in_out_result.h> -#include <__algorithm/make_projected.h> -#include <__algorithm/replace_copy_if.h> #include <__config> #include <__functional/identity.h> #include <__functional/invoke.h> -#include <__functional/ranges_operations.h> #include <__iterator/concepts.h> -#include <__iterator/iterator_traits.h> #include <__iterator/projected.h> #include <__ranges/access.h> #include <__ranges/concepts.h> #include <__ranges/dangling.h> -#include <__utility/forward.h> #include <__utility/move.h> #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) @@ -38,34 +33,51 @@ namespace ranges { template <class _InIter, class _OutIter> using replace_copy_if_result = in_out_result<_InIter, _OutIter>; -namespace __replace_copy_if { - -struct __fn { - - template <input_iterator _InIter, sentinel_for<_InIter> _Sent, class _Type, output_iterator<const _Type&> _OutIter, - class _Proj = identity, indirect_unary_predicate<projected<_InIter, _Proj>> _Pred> - requires indirectly_copyable<_InIter, _OutIter> - _LIBCPP_HIDE_FROM_ABI constexpr - replace_copy_if_result<_InIter, _OutIter> - operator()(_InIter __first, _Sent __last, _OutIter __result, _Pred __pred, const _Type& __new_value, - _Proj __proj = {}) const { - // TODO: implement - (void)__first; (void)__last; (void)__result; (void)__pred; (void)__new_value; (void)__proj; - return {}; +template <class _InIter, class _Sent, class _OutIter, class _Pred, class _Type, class _Proj> +_LIBCPP_HIDE_FROM_ABI constexpr replace_copy_if_result<_InIter, _OutIter> __replace_copy_if_impl( + _InIter __first, _Sent __last, _OutIter __result, _Pred& __pred, const _Type& __new_value, _Proj& __proj) { + while (__first != __last) { + if (std::invoke(__pred, std::invoke(__proj, *__first))) + *__result = __new_value; + else + *__result = *__first; + + ++__first; + ++__result; } - template <input_range _Range, class _Type, output_iterator<const _Type&> _OutIter, class _Proj = identity, - indirect_unary_predicate<projected<iterator_t<_Range>, _Proj>> _Pred> - requires indirectly_copyable<iterator_t<_Range>, _OutIter> - _LIBCPP_HIDE_FROM_ABI constexpr - replace_copy_if_result<borrowed_iterator_t<_Range>, _OutIter> - operator()(_Range&& __range, _OutIter __result, _Pred __pred, const _Type& __new_value, _Proj __proj = {}) const { - // TODO: implement - (void)__range; (void)__result; (void)__pred; (void)__new_value; (void)__proj; - return {}; - } + return {std::move(__first), std::move(__result)}; +} + +namespace __replace_copy_if { -}; + struct __fn { + template <input_iterator _InIter, + sentinel_for<_InIter> _Sent, + class _Type, + output_iterator<const _Type&> _OutIter, + class _Proj = identity, + indirect_unary_predicate<projected<_InIter, _Proj>> _Pred> + requires indirectly_copyable<_InIter, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_if_result<_InIter, _OutIter> operator()( + _InIter __first, _Sent __last, _OutIter __result, _Pred __pred, const _Type& __new_value, _Proj __proj = {}) + const { + return ranges::__replace_copy_if_impl( + std::move(__first), std::move(__last), std::move(__result), __pred, __new_value, __proj); + } + + template <input_range _Range, + class _Type, + output_iterator<const _Type&> _OutIter, + class _Proj = identity, + indirect_unary_predicate<projected<iterator_t<_Range>, _Proj>> _Pred> + requires indirectly_copyable<iterator_t<_Range>, _OutIter> + _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_if_result<borrowed_iterator_t<_Range>, _OutIter> + operator()(_Range&& __range, _OutIter __result, _Pred __pred, const _Type& __new_value, _Proj __proj = {}) const { + return ranges::__replace_copy_if_impl( + ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __new_value, __proj); + } + }; } // namespace __replace_copy_if |