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rotate_copy.hpp
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1
2// Range v3 library
3//
4// Copyright Eric Niebler 2013-present
5//
6// Use, modification and distribution is subject to the
7// Boost Software License, Version 1.0. (See accompanying
8// file LICENSE_1_0.txt or copy at
9// http://www.boost.org/LICENSE_1_0.txt)
10//
11// Project home: https://github.com/ericniebler/range-v3
12//
13#ifndef RANGES_V3_ALGORITHM_ROTATE_COPY_HPP
14#define RANGES_V3_ALGORITHM_ROTATE_COPY_HPP
15
16#include <functional>
17
19
21#include <range/v3/algorithm/result_types.hpp>
29#include <range/v3/utility/static_const.hpp>
30
31#include <range/v3/detail/prologue.hpp>
32
33namespace ranges
34{
37 template<typename I, typename O>
38 using rotate_copy_result = detail::in_out_result<I, O>;
39
40 RANGES_FUNC_BEGIN(rotate_copy)
41
42
43 template(typename I, typename S, typename O, typename P = identity)(
44 requires forward_iterator<I> AND sentinel_for<S, I> AND
46 constexpr rotate_copy_result<I, O> //
47 RANGES_FUNC(rotate_copy)(I first, I middle, S last, O out) //
48 {
49 auto res = ranges::copy(middle, std::move(last), std::move(out));
50 return {std::move(res.in),
51 ranges::copy(std::move(first), middle, std::move(res.out)).out};
52 }
53
55 template(typename Rng, typename O, typename P = identity)(
56 requires range<Rng> AND weakly_incrementable<O> AND
58 constexpr rotate_copy_result<borrowed_iterator_t<Rng>, O> //
59 RANGES_FUNC(rotate_copy)(Rng && rng, iterator_t<Rng> middle, O out) //
60 {
61 return (*this)(begin(rng), std::move(middle), end(rng), std::move(out));
62 }
63
64 RANGES_FUNC_END(rotate_copy)
65
66 namespace cpp20
67 {
68 using ranges::rotate_copy;
69 using ranges::rotate_copy_result;
70 } // namespace cpp20
72} // namespace ranges
73
74#include <range/v3/detail/epilogue.hpp>
75
76#endif
The forward_iterator concept.
The indirectly_copyable concept.
The range concept.
The sentinel_for concept.
The weakly_incrementable concept.
decltype(begin(declval(Rng &))) iterator_t
Definition access.hpp:698
Definition identity.hpp:25