//===----------------------------------------------------------------------===//
//
// 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
// <set>
// template<class InputIterator,
// class Compare = less<iter-value-type<InputIterator>>,
// class Allocator = allocator<iter-value-type<InputIterator>>>
// set(InputIterator, InputIterator,
// Compare = Compare(), Allocator = Allocator())
// -> set<iter-value-type<InputIterator>, Compare, Allocator>;
// template<class Key, class Compare = less<Key>,
// class Allocator = allocator<Key>>
// set(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
// -> set<Key, Compare, Allocator>;
// template<class InputIterator, class Allocator>
// set(InputIterator, InputIterator, Allocator)
// -> set<iter-value-type<InputIterator>,
// less<iter-value-type<InputIterator>>, Allocator>;
// template<class Key, class Allocator>
// set(initializer_list<Key>, Allocator)
// -> set<Key, less<Key>, Allocator>;
//
// template<ranges::input_range R, class Compare = less<ranges::range_value_t<R>>,
// class Allocator = allocator<ranges::range_value_t<R>>>
// set(from_range_t, R&&, Compare = Compare(), Allocator = Allocator())
// -> set<ranges::range_value_t<R>, Compare, Allocator>; // C++23
//
// template<ranges::input_range R, class Allocator>
// set(from_range_t, R&&, Allocator)
// -> set<ranges::range_value_t<R>, less<ranges::range_value_t<R>>, Allocator>; // C++23
#include <algorithm> // std::equal
#include <array>
#include <cassert>
#include <climits> // INT_MAX
#include <functional>
#include <set>
#include <type_traits>
#include "deduction_guides_sfinae_checks.h"
#include "test_allocator.h"
struct NotAnAllocator {
friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
};
int main(int, char **) {
{
const int arr[] = { 1, 2, 1, INT_MAX, 3 };
std::set s(std::begin(arr), std::end(arr));
ASSERT_SAME_TYPE(decltype(s), std::set<int>);
const int expected_s[] = { 1, 2, 3, INT_MAX };
assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
std::end(expected_s)));
}
{
const int arr[] = { 1, 2, 1, INT_MAX, 3 };
std::set s(std::begin(arr), std::end(arr), std::greater<int>());
ASSERT_SAME_TYPE(decltype(s), std::set<int, std::greater<int> >);
const int expected_s[] = { INT_MAX, 3, 2, 1 };
assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
std::end(expected_s)));
}
{
const int arr[] = { 1, 2, 1, INT_MAX, 3 };
std::set s(std::begin(arr), std::end(arr), std::greater<int>(),
test_allocator<int>(0, 42));
ASSERT_SAME_TYPE(decltype(s),
std::set<int, std::greater<int>, test_allocator<int> >);
const int expected_s[] = { INT_MAX, 3, 2, 1 };
assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
std::end(expected_s)));
assert(s.get_allocator().get_id() == 42);
}
{
std::set<long> source;
std::set s(source);
ASSERT_SAME_TYPE(decltype(s), std::set<long>);
assert(s.size() == 0);
}
{
std::set<long> source;
std::set s{ source }; // braces instead of parens
ASSERT_SAME_TYPE(decltype(s), std::set<long>);
assert(s.size() == 0);
}
{
std::set<long> source;
std::set s(source, std::set<long>::allocator_type());
ASSERT_SAME_TYPE(decltype(s), std::set<long>);
assert(s.size() == 0);
}
{
std::set s{ 1, 2, 1, INT_MAX, 3 };
ASSERT_SAME_TYPE(decltype(s), std::set<int>);
const int expected_s[] = { 1, 2, 3, INT_MAX };
assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
std::end(expected_s)));
}
{
std::set s({ 1, 2, 1, INT_MAX, 3 }, std::greater<int>());
ASSERT_SAME_TYPE(decltype(s), std::set<int, std::greater<int> >);
const int expected_s[] = { INT_MAX, 3, 2, 1 };
assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
std::end(expected_s)));
}
{
std::set s({ 1, 2, 1, INT_MAX, 3 }, std::greater<int>(),
test_allocator<int>(0, 43));
ASSERT_SAME_TYPE(decltype(s),
std::set<int, std::greater<int>, test_allocator<int> >);
const int expected_s[] = { INT_MAX, 3, 2, 1 };
assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
std::end(expected_s)));
assert(s.get_allocator().get_id() == 43);
}
{
const int arr[] = { 1, 2, 1, INT_MAX, 3 };
std::set s(std::begin(arr), std::end(arr), test_allocator<int>(0, 44));
ASSERT_SAME_TYPE(decltype(s),
std::set<int, std::less<int>, test_allocator<int> >);
const int expected_s[] = { 1, 2, 3, INT_MAX };
assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
std::end(expected_s)));
assert(s.get_allocator().get_id() == 44);
}
{
std::set s({ 1, 2, 1, INT_MAX, 3 }, test_allocator<int>(0, 45));
ASSERT_SAME_TYPE(decltype(s),
std::set<int, std::less<int>, test_allocator<int> >);
const int expected_s[] = { 1, 2, 3, INT_MAX };
assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
std::end(expected_s)));
assert(s.get_allocator().get_id() == 45);
}
{
NotAnAllocator a;
std::set s{ a }; // set(initializer_list<NotAnAllocator>)
ASSERT_SAME_TYPE(decltype(s), std::set<NotAnAllocator>);
assert(s.size() == 1);
}
{
std::set<long> source;
std::set s{ source, source }; // set(initializer_list<set<long>>)
ASSERT_SAME_TYPE(decltype(s), std::set<std::set<long> >);
assert(s.size() == 1);
}
{
NotAnAllocator a;
std::set s{ a, a }; // set(initializer_list<NotAnAllocator>)
ASSERT_SAME_TYPE(decltype(s), std::set<NotAnAllocator>);
assert(s.size() == 1);
}
{
int source[3] = { 3, 4, 5 };
std::set s(source, source + 3); // set(InputIterator, InputIterator)
ASSERT_SAME_TYPE(decltype(s), std::set<int>);
assert(s.size() == 3);
}
{
int source[3] = { 3, 4, 5 };
std::set s{ source, source + 3 }; // set(initializer_list<int*>)
ASSERT_SAME_TYPE(decltype(s), std::set<int *>);
assert(s.size() == 2);
}
#if TEST_STD_VER >= 23
{
using Range = std::array<int, 0>;
using Comp = std::greater<int>;
using DefaultComp = std::less<int>;
using Alloc = test_allocator<int>;
{ // (from_range, range)
std::set c(std::from_range, Range());
static_assert(std::is_same_v<decltype(c), std::set<int>>);
}
{ // (from_range, range, comp)
std::set c(std::from_range, Range(), Comp());
static_assert(std::is_same_v<decltype(c), std::set<int, Comp>>);
}
{ // (from_range, range, comp, alloc)
std::set c(std::from_range, Range(), Comp(), Alloc());
static_assert(std::is_same_v<decltype(c), std::set<int, Comp, Alloc>>);
}
{ // (from_range, range, alloc)
std::set c(std::from_range, Range(), Alloc());
static_assert(std::is_same_v<decltype(c), std::set<int, DefaultComp, Alloc>>);
}
}
#endif
AssociativeContainerDeductionGuidesSfinaeAway<std::set, std::set<int>>();
return 0;
}
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