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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
//===----------------------------------------------------------------------===//
//
// 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
// <flat_map>
// mapped_type& operator[](const key_type& k);
#include <cassert>
#include <deque>
#include <flat_map>
#include <functional>
#include <type_traits>
#include <vector>
#include "MinSequenceContainer.h"
#include "../helpers.h"
#include "min_allocator.h"
#include "test_macros.h"
// Constraints: is_constructible_v<mapped_type> is true.
template <class M, class Input>
concept CanIndex = requires(M m, Input k) { m[k]; };
static_assert(CanIndex<std::flat_map<int, double>, const int&>);
static_assert(!CanIndex<std::flat_map<int, NoDefaultCtr>, const int&>);
template <class KeyContainer, class ValueContainer>
constexpr void test() {
using P = std::pair<int, double>;
P ar[] = {
P(1, 1.5),
P(2, 2.5),
P(3, 3.5),
P(4, 4.5),
P(5, 5.5),
P(7, 7.5),
P(8, 8.5),
};
const int one = 1;
std::flat_map<int, double, std::less<int>, KeyContainer, ValueContainer> m(ar, ar + sizeof(ar) / sizeof(ar[0]));
ASSERT_SAME_TYPE(decltype(m[one]), double&);
assert(m.size() == 7);
assert(m[one] == 1.5);
assert(m.size() == 7);
m[1] = -1.5;
assert(m[1] == -1.5);
assert(m.size() == 7);
assert(m[6] == 0);
assert(m.size() == 8);
m[6] = 6.5;
assert(m[6] == 6.5);
assert(m.size() == 8);
}
constexpr bool test() {
test<std::vector<int>, std::vector<double>>();
#ifndef __cpp_lib_constexpr_deque
if (!TEST_IS_CONSTANT_EVALUATED)
#endif
{
test<std::deque<int>, std::vector<double>>();
}
test<MinSequenceContainer<int>, MinSequenceContainer<double>>();
test<std::vector<int, min_allocator<int>>, std::vector<double, min_allocator<double>>>();
if (!TEST_IS_CONSTANT_EVALUATED) {
auto index_func = [](auto& m, auto key_arg, auto value_arg) {
using FlatMap = std::decay_t<decltype(m)>;
const typename FlatMap::key_type key = key_arg;
const typename FlatMap::mapped_type value = value_arg;
m[key] = value;
};
test_emplace_exception_guarantee(index_func);
}
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER >= 26
static_assert(test());
#endif
return 0;
}
|
