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
64