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//===----------------------------------------------------------------------===//
//
// 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[](key_type&& k);
#include <flat_map>
#include <deque>
#include <functional>
#include <cassert>
#include <type_traits>
#include "MinSequenceContainer.h"
#include "../helpers.h"
#include "test_macros.h"
#include "MoveOnly.h"
#include "min_allocator.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>, int&&>);
static_assert(!CanIndex<std::flat_map<int, NoDefaultCtr>, int&&>);
template <class KeyContainer, class ValueContainer>
constexpr void test() {
{
std::flat_map<MoveOnly, double, std::less<MoveOnly>, KeyContainer, ValueContainer> m;
ASSERT_SAME_TYPE(decltype(m[MoveOnly{}]), double&);
assert(m.size() == 0);
assert(m[1] == 0.0);
assert(m.size() == 1);
m[1] = -1.5;
assert(m[1] == -1.5);
assert(m.size() == 1);
assert(m[6] == 0);
assert(m.size() == 2);
m[6] = 6.5;
assert(m[6] == 6.5);
assert(m.size() == 2);
}
}
constexpr bool test() {
test<std::vector<MoveOnly>, std::vector<double>>();
#ifndef __cpp_lib_constexpr_deque
if (!TEST_IS_CONSTANT_EVALUATED)
#endif
{
test<std::deque<MoveOnly>, std::vector<double>>();
}
test<MinSequenceContainer<MoveOnly>, MinSequenceContainer<double>>();
test<std::vector<MoveOnly, min_allocator<MoveOnly>>, 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)>;
typename FlatMap::key_type key = key_arg;
const typename FlatMap::mapped_type value = value_arg;
m[std::move(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;
}
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