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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_set>
// void replace(container_type&& key_cont);
#include <algorithm>
#include <deque>
#include <concepts>
#include <flat_set>
#include <functional>
#include "MinSequenceContainer.h"
#include "../helpers.h"
#include "test_macros.h"
#include "min_allocator.h"
template <class T, class... Args>
concept CanReplace = requires(T t, Args&&... args) { t.replace(std::forward<Args>(args)...); };
using Set = std::flat_set<int, int>;
static_assert(CanReplace<Set, std::vector<int>>);
static_assert(!CanReplace<Set, const std::vector<int>&>);
template <class KeyContainer>
constexpr void test_one() {
using Key = typename KeyContainer::value_type;
using M = std::flat_set<Key, std::less<Key>, KeyContainer>;
{
// was empty
M m;
KeyContainer new_keys = {7, 8};
auto expected_keys = new_keys;
m.replace(std::move(new_keys));
assert(m.size() == 2);
assert(std::ranges::equal(m, expected_keys));
}
M m = M({1, 2, 3});
KeyContainer new_keys = {7, 8};
auto expected_keys = new_keys;
m.replace(std::move(new_keys));
assert(m.size() == 2);
assert(std::ranges::equal(m, expected_keys));
}
constexpr bool test() {
test_one<std::vector<int>>();
#ifndef __cpp_lib_constexpr_deque
if (!TEST_IS_CONSTANT_EVALUATED)
#endif
test_one<std::deque<int>>();
test_one<MinSequenceContainer<int>>();
test_one<std::vector<int, min_allocator<int>>>();
return true;
}
void test_exception() {
#ifndef TEST_HAS_NO_EXCEPTIONS
using KeyContainer = ThrowOnMoveContainer<int>;
using M = std::flat_set<int, std::ranges::less, KeyContainer>;
M m;
m.emplace(1);
m.emplace(2);
try {
KeyContainer new_keys{3, 4};
m.replace(std::move(new_keys));
assert(false);
} catch (int) {
check_invariant(m);
// In libc++, we clear the map
LIBCPP_ASSERT(m.size() == 0);
}
#endif
}
int main(int, char**) {
test();
test_exception();
#if TEST_STD_VER >= 26
static_assert(test());
#endif
return 0;
}
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