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 _LIBCPP_PUSH_MACROS
  28 #include <__undef_macros>
  29
  30 #if _LIBCPP_STD_VER >= 20
  31
  32 _LIBCPP_BEGIN_NAMESPACE_STD
  33
  34 namespace ranges {
  35 struct __replace {
  36   template <input_iterator _Iter, sentinel_for<_Iter> _Sent, class _Type1, class _Type2, class _Proj = identity>
  37     requires indirectly_writable<_Iter, const _Type2&> &&
  38              indirect_binary_predicate<ranges::equal_to, projected<_Iter, _Proj>, const _Type1*>
  39   _LIBCPP_HIDE_FROM_ABI constexpr _Iter operator()(
  40       _Iter __first, _Sent __last, const _Type1& __old_value, const _Type2& __new_value, _Proj __proj = {}) const {
  41     auto __pred = [&](const auto& __val) -> bool { return __val == __old_value; };
  42     return ranges::__replace_if_impl(std::move(__first), std::move(__last), __pred, __new_value, __proj);
  43   }
  44
  45   template <input_range _Range, class _Type1, class _Type2, class _Proj = identity>
  46     requires indirectly_writable<iterator_t<_Range>, const _Type2&> &&
  47              indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type1*>
  48   _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range>
  49   operator()(_Range&& __range, const _Type1& __old_value, const _Type2& __new_value, _Proj __proj = {}) const {
  50     auto __pred = [&](auto&& __val) -> bool { return __val == __old_value; };
  51     return ranges::__replace_if_impl(ranges::begin(__range), ranges::end(__range), __pred, __new_value, __proj);
  52   }
  53 };
  54
  55 inline namespace __cpo {
  56 inline constexpr auto replace = __replace{};
  57 } // namespace __cpo
  58 } // namespace ranges
  59
  60 _LIBCPP_END_NAMESPACE_STD
  61
  62 #endif // _LIBCPP_STD_VER >= 20
  63
  64 _LIBCPP_POP_MACROS
  65
  66 #endif // _LIBCPP___ALGORITHM_RANGES_REPLACE_H