1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
// ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-steps): -fconstexpr-steps=2000000
// template<container-compatible-range<bool> R>
// constexpr void append_range(R&& rg); // C++23
#include <vector>
#include "../insert_range_sequence_containers.h"
#include "test_macros.h"
// Tested cases:
// - different kinds of insertions (appending an {empty/one-element/mid-sized/long range} into an
// {empty/one-element/full} container);
// - an exception is thrown when allocating new elements.
constexpr bool test() {
static_assert(test_constraints_append_range<std::vector, bool, char>());
for_all_iterators_and_allocators<bool, const int*>([]<class Iter, class Sent, class Alloc>() {
test_sequence_append_range<std::vector<bool, Alloc>, Iter, Sent>([]([[maybe_unused]] auto&& c) {
LIBCPP_ASSERT(c.__invariants());
// `is_contiguous_container_asan_correct` doesn't work on `vector<bool>`.
});
});
{ // Vector may or may not need to reallocate because of the insertion -- make sure to test both cases.
{ // Ensure reallocation happens.
constexpr int N = 255;
bool in[N] = {};
std::vector<bool> v = {0, 0, 0, 1, 1, 0, 0, 0};
auto initial = v;
assert(v.capacity() < v.size() + std::ranges::size(in));
v.append_range(in);
// Because `in` is very large (it has to be to exceed the large capacity that `vector<bool>` allocates), it is
// impractical to have the expected value as a literal.
assert(v.size() == initial.size() + N);
assert(std::ranges::equal(v.begin(), v.begin() + initial.size(), initial.begin(), initial.end()));
assert(std::ranges::equal(v.begin() + initial.size(), v.end(), std::ranges::begin(in), std::ranges::end(in)));
}
{ // Ensure no reallocation happens.
bool in[] = {1, 1, 1, 1, 0, 0, 1, 1, 1, 1};
std::vector<bool> v = {0, 0, 0, 1, 1, 0, 0, 0};
v.reserve(v.size() + std::ranges::size(in));
assert(v.capacity() >= v.size() + std::ranges::size(in));
v.append_range(in);
assert(std::ranges::equal(v, std::vector<bool>{0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1}));
}
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
// Note: `test_append_range_exception_safety_throwing_copy` doesn't apply because copying booleans cannot throw.
test_append_range_exception_safety_throwing_allocator<std::vector, bool>();
return 0;
}
|
