c90801457f
This has multiple benefits: - The optimizations are also performed for the `ranges::` versions of the algorithms - Code duplication is reduced - it is simpler to add this optimization for other segmented iterators, like `ranges::join_view::iterator` - Algorithm code is removed from `<deque>` Reviewed By: ldionne, huixie90, #libc Spies: mstorsjo, sstefan1, EricWF, libcxx-commits, mgorny Differential Revision: https://reviews.llvm.org/D132505
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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#include <algorithm>
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#include <cassert>
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#include <concepts>
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#include <deque>
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#include <vector>
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template <class InContainer, class OutContainer>
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constexpr void test_containers() {
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using InIter = typename InContainer::iterator;
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using OutIter = typename OutContainer::iterator;
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{
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InContainer in{1, 2, 3, 4};
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OutContainer out(4);
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std::same_as<std::ranges::in_out_result<InIter, OutIter>> auto ret =
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std::ranges::copy(in.begin(), in.end(), out.begin());
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assert(std::ranges::equal(in, out));
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assert(ret.in == in.end());
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assert(ret.out == out.end());
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}
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{
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InContainer in{1, 2, 3, 4};
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OutContainer out(4);
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std::same_as<std::ranges::in_out_result<InIter, OutIter>> auto ret = std::ranges::copy(in, out.begin());
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assert(std::ranges::equal(in, out));
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assert(ret.in == in.end());
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assert(ret.out == out.end());
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}
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}
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int main(int, char**) {
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if (!std::is_constant_evaluated()) {
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test_containers<std::deque<int>, std::deque<int>>();
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test_containers<std::deque<int>, std::vector<int>>();
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test_containers<std::vector<int>, std::deque<int>>();
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test_containers<std::vector<int>, std::vector<int>>();
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}
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return 0;
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}
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