libcxx/include/__algorithm/ranges_replace.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_H
  10 #define _LIBCPP___ALGORITHM_RANGES_REPLACE_H
  11
  12 #include <__algorithm/ranges_replace_if.h>
  13 #include <__config>
  14 #include <__functional/identity.h>
  15 #include <__functional/ranges_operations.h>
  16 #include <__iterator/concepts.h>
  17 #include <__iterator/projected.h>
  18 #include <__ranges/access.h>
  19 #include <__ranges/concepts.h>
  20 #include <__ranges/dangling.h>
  21 #include <__utility/move.h>
  22
  23 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  24 #  pragma GCC system_header
  25 #endif
  26
  27 #if _LIBCPP_STD_VER >= 20
  28
  29 _LIBCPP_BEGIN_NAMESPACE_STD
  30
  31 namespace ranges {
  32 namespace __replace {
  33 struct __fn {
  34   template <input_iterator _Iter, sentinel_for<_Iter> _Sent, class _Type1, class _Type2, class _Proj = identity>
  35     requires indirectly_writable<_Iter, const _Type2&> &&
  36              indirect_binary_predicate<ranges::equal_to, projected<_Iter, _Proj>, const _Type1*>
  37   _LIBCPP_HIDE_FROM_ABI constexpr _Iter operator()(
  38       _Iter __first, _Sent __last, const _Type1& __old_value, const _Type2& __new_value, _Proj __proj = {}) const {
  39     auto __pred = [&](const auto& __val) { return __val == __old_value; };
  40     return ranges::__replace_if_impl(std::move(__first), std::move(__last), __pred, __new_value, __proj);
  41   }
  42
  43   template <input_range _Range, class _Type1, class _Type2, class _Proj = identity>
  44     requires indirectly_writable<iterator_t<_Range>, const _Type2&> &&
  45              indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type1*>
  46   _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range>
  47   operator()(_Range&& __range, const _Type1& __old_value, const _Type2& __new_value, _Proj __proj = {}) const {
  48     auto __pred = [&](auto&& __val) { return __val == __old_value; };
  49     return ranges::__replace_if_impl(ranges::begin(__range), ranges::end(__range), __pred, __new_value, __proj);
  50   }
  51 };
  52 } // namespace __replace
  53
  54 inline namespace __cpo {
  55 inline constexpr auto replace = __replace::__fn{};
  56 } // namespace __cpo
  57 } // namespace ranges
  58
  59 _LIBCPP_END_NAMESPACE_STD
  60
  61 #endif // _LIBCPP_STD_VER >= 20
  62
  63 #endif // _LIBCPP___ALGORITHM_RANGES_REPLACE_H