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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>
// flat_set(const flat_set&, const allocator_type&);
#include <algorithm>
#include <cassert>
#include <deque>
#include <flat_set>
#include <functional>
#include <vector>
#include "test_macros.h"
#include "../../../test_compare.h"
#include "test_allocator.h"
template <template <class...> class KeyContainer>
constexpr void test() {
using C = test_less<int>;
KeyContainer<int, test_allocator<int>> ks({1, 3, 5}, test_allocator<int>(6));
using M = std::flat_set<int, C, decltype(ks)>;
auto mo = M(ks, C(5));
auto m = M(mo, test_allocator<int>(3));
assert(m.key_comp() == C(5));
assert(std::ranges::equal(m, ks));
auto keys = std::move(m).extract();
assert(keys.get_allocator() == test_allocator<int>(3));
// mo is unchanged
assert(mo.key_comp() == C(5));
assert(std::ranges::equal(mo, ks));
auto keys2 = std::move(mo).extract();
assert(keys2.get_allocator() == test_allocator<int>(6));
}
constexpr bool test() {
{
// The constructors in this subclause shall not participate in overload
// resolution unless uses_allocator_v<container_type, Alloc> is true.
using C = test_less<int>;
using A1 = test_allocator<int>;
using A2 = other_allocator<int>;
using V1 = std::vector<int, A1>;
using V2 = std::vector<int, A2>;
using M1 = std::flat_set<int, C, V1>;
using M2 = std::flat_set<int, C, V2>;
static_assert(std::is_constructible_v<M1, const M1&, const A1&>);
static_assert(std::is_constructible_v<M2, const M2&, const A2&>);
static_assert(!std::is_constructible_v<M1, const M1&, const A2&>);
static_assert(!std::is_constructible_v<M2, const M2&, const A1&>);
}
test<std::vector>();
#ifndef __cpp_lib_constexpr_deque
if (!TEST_IS_CONSTANT_EVALUATED)
#endif
test<std::deque>();
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER >= 26
static_assert(test());
#endif
return 0;
}
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