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 // UNSUPPORTED: c++03, c++11, c++14
10
11 // UNSUPPORTED: libcpp-has-no-incomplete-pstl
12
13 // <algorithm>
14
15 // template<class ExecutionPolicy, class ForwardIterator1, class ForwardIterator2>
16 // ForwardIterator2 move(ExecutionPolicy&& policy,
17 // ForwardIterator1 first, ForwardIterator1 last,
18 // ForwardIterator2 result);
19
20 #include <algorithm>
21 #include <vector>
22
23 #include "test_macros.h"
24 #include "test_execution_policies.h"
25 #include "test_iterators.h"
26
27 EXECUTION_POLICY_SFINAE_TEST(move);
28
29 static_assert(sfinae_test_move<int, int*, int*, int*>);
30 static_assert(!sfinae_test_move<std::execution::parallel_policy, int*, int*, int*>);
31
32 template <class Iter1, class Iter2>
33 struct TestInt {
34 template <class Policy>
operator ()TestInt35 void operator()(Policy&& policy) {
36 // simple test
37 for (const int size : {0, 1, 2, 100, 350}) {
38 std::vector<int> a(size);
39 for (int i = 0; i != size; ++i)
40 a[i] = i + 1;
41
42 std::vector<int> out(std::size(a));
43 decltype(auto) ret =
44 std::move(policy, Iter1(std::data(a)), Iter1(std::data(a) + std::size(a)), Iter2(std::data(out)));
45 static_assert(std::is_same_v<decltype(ret), Iter2>);
46 assert(base(ret) == std::data(out) + std::size(out));
47 for (int i = 0; i != size; ++i)
48 assert(out[i] == i + 1);
49 }
50 }
51 };
52
53 struct MovedToTester {
54 bool moved_to = false;
55 MovedToTester() = default;
MovedToTesterMovedToTester56 MovedToTester(MovedToTester&&) {}
operator =MovedToTester57 MovedToTester& operator=(MovedToTester&&) {
58 assert(!moved_to);
59 moved_to = true;
60 return *this;
61 }
62 ~MovedToTester() = default;
63 };
64
65 template <class Iter1, class Iter2>
66 struct TestNonTrivial {
67 template <class Policy>
operator ()TestNonTrivial68 void operator()(Policy&& policy) {
69 // simple test
70 for (const int size : {0, 1, 2, 100, 350}) {
71 std::vector<MovedToTester> a(size);
72
73 std::vector<MovedToTester> out(std::size(a));
74 auto ret = std::move(policy, Iter1(std::data(a)), Iter1(std::data(a) + std::size(a)), Iter2(std::data(out)));
75 assert(base(ret) == std::data(out) + std::size(out));
76 assert(std::all_of(std::begin(out), std::end(out), [](MovedToTester& t) { return t.moved_to; }));
77 assert(std::none_of(std::begin(a), std::end(a), [](MovedToTester& t) { return t.moved_to; }));
78 }
79 }
80 };
81
main(int,char **)82 int main(int, char**) {
83 types::for_each(types::forward_iterator_list<int*>{}, types::apply_type_identity{[](auto v) {
84 using Iter = typename decltype(v)::type;
85 types::for_each(
86 types::forward_iterator_list<int*>{},
87 TestIteratorWithPolicies< types::partial_instantiation<TestInt, Iter>::template apply>{});
88 }});
89
90 types::for_each(
91 types::forward_iterator_list<MovedToTester*>{}, types::apply_type_identity{[](auto v) {
92 using Iter = typename decltype(v)::type;
93 types::for_each(
94 types::forward_iterator_list<MovedToTester*>{},
95 TestIteratorWithPolicies< types::partial_instantiation<TestNonTrivial, Iter>::template apply>{});
96 }});
97
98 return 0;
99 }
100