libcxx/include/__algorithm/ranges_replace_copy.h

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_H
  10 #define _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_H
  11
  12 #include <__algorithm/in_out_result.h>
  13 #include <__algorithm/ranges_replace_copy_if.h>
  14 #include <__config>
  15 #include <__functional/identity.h>
  16 #include <__functional/invoke.h>
  17 #include <__functional/ranges_operations.h>
  18 #include <__iterator/concepts.h>
  19 #include <__iterator/projected.h>
  20 #include <__ranges/access.h>
  21 #include <__ranges/concepts.h>
  22 #include <__ranges/dangling.h>
  23 #include <__utility/move.h>
  24
  25 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  26 #  pragma GCC system_header
  27 #endif
  28
  29 #if _LIBCPP_STD_VER >= 20
  30
  31 _LIBCPP_BEGIN_NAMESPACE_STD
  32
  33 namespace ranges {
  34
  35 template <class _InIter, class _OutIter>
  36 using replace_copy_result = in_out_result<_InIter, _OutIter>;
  37
  38 namespace __replace_copy {
  39
  40 struct __fn {
  41   template <input_iterator _InIter,
  42             sentinel_for<_InIter> _Sent,
  43             class _OldType,
  44             class _NewType,
  45             output_iterator<const _NewType&> _OutIter,
  46             class _Proj = identity>
  47     requires indirectly_copyable<_InIter, _OutIter> &&
  48              indirect_binary_predicate<ranges::equal_to, projected<_InIter, _Proj>, const _OldType*>
  49   _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_result<_InIter, _OutIter>
  50   operator()(_InIter __first,
  51              _Sent __last,
  52              _OutIter __result,
  53              const _OldType& __old_value,
  54              const _NewType& __new_value,
  55              _Proj __proj = {}) const {
  56     auto __pred = [&](const auto& __value) { return __value == __old_value; };
  57     return ranges::__replace_copy_if_impl(
  58         std::move(__first), std::move(__last), std::move(__result), __pred, __new_value, __proj);
  59   }
  60
  61   template <input_range _Range,
  62             class _OldType,
  63             class _NewType,
  64             output_iterator<const _NewType&> _OutIter,
  65             class _Proj = identity>
  66     requires indirectly_copyable<iterator_t<_Range>, _OutIter> &&
  67              indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _OldType*>
  68   _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_result<borrowed_iterator_t<_Range>, _OutIter> operator()(
  69       _Range&& __range, _OutIter __result, const _OldType& __old_value, const _NewType& __new_value, _Proj __proj = {})
  70       const {
  71     auto __pred = [&](const auto& __value) { return __value == __old_value; };
  72     return ranges::__replace_copy_if_impl(
  73         ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __new_value, __proj);
  74   }
  75 };
  76
  77 } // namespace __replace_copy
  78
  79 inline namespace __cpo {
  80 inline constexpr auto replace_copy = __replace_copy::__fn{};
  81 } // namespace __cpo
  82 } // namespace ranges
  83
  84 _LIBCPP_END_NAMESPACE_STD
  85
  86 #endif // _LIBCPP_STD_VER >= 20
  87
  88 #endif // _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_H