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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
//
//===----------------------------------------------------------------------===//
// <deque>
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: libcpp-no-deduction-guides
// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
// deque(InputIterator, InputIterator, Allocator = Allocator())
// -> deque<typename iterator_traits<InputIterator>::value_type, Allocator>;
//
#include <deque>
#include <iterator>
#include <cassert>
#include <cstddef>
#include <climits> // INT_MAX
#include "test_macros.h"
#include "test_iterators.h"
#include "test_allocator.h"
struct A {};
int main(int, char**)
{
// Test the explicit deduction guides
{
const int arr[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
std::deque deq(std::begin(arr), std::end(arr));
static_assert(std::is_same_v<decltype(deq), std::deque<int>>, "");
assert(std::equal(deq.begin(), deq.end(), std::begin(arr), std::end(arr)));
}
{
const long arr[] = {INT_MAX, 1L, 2L, 3L };
std::deque deq(std::begin(arr), std::end(arr), std::allocator<long>());
static_assert(std::is_same_v<decltype(deq)::value_type, long>, "");
assert(deq.size() == 4);
assert(deq[0] == INT_MAX);
assert(deq[1] == 1L);
assert(deq[2] == 2L);
}
// Test the implicit deduction guides
{
// We don't expect this one to work.
// std::deque deq(std::allocator<int>()); // deque (allocator &)
}
{
std::deque deq(1, A{}); // deque (size_type, T)
static_assert(std::is_same_v<decltype(deq)::value_type, A>, "");
static_assert(std::is_same_v<decltype(deq)::allocator_type, std::allocator<A>>, "");
assert(deq.size() == 1);
}
{
std::deque deq(1, A{}, test_allocator<A>()); // deque (size_type, T, allocator)
static_assert(std::is_same_v<decltype(deq)::value_type, A>, "");
static_assert(std::is_same_v<decltype(deq)::allocator_type, test_allocator<A>>, "");
assert(deq.size() == 1);
}
{
std::deque deq{1U, 2U, 3U, 4U, 5U}; // deque(initializer-list)
static_assert(std::is_same_v<decltype(deq)::value_type, unsigned>, "");
assert(deq.size() == 5);
assert(deq[2] == 3U);
}
{
std::deque deq({1.0, 2.0, 3.0, 4.0}, test_allocator<double>()); // deque(initializer-list, allocator)
static_assert(std::is_same_v<decltype(deq)::value_type, double>, "");
static_assert(std::is_same_v<decltype(deq)::allocator_type, test_allocator<double>>, "");
assert(deq.size() == 4);
assert(deq[3] == 4.0);
}
{
std::deque<long double> source;
std::deque deq(source); // deque(deque &)
static_assert(std::is_same_v<decltype(deq)::value_type, long double>, "");
static_assert(std::is_same_v<decltype(deq)::allocator_type, std::allocator<long double>>, "");
assert(deq.size() == 0);
}
{
typedef test_allocator<short> Alloc;
typedef test_allocator<int> ConvertibleToAlloc;
{
std::deque<short, Alloc> source;
std::deque deq(source, Alloc(2));
static_assert(std::is_same_v<decltype(deq), decltype(source)>);
}
{
std::deque<short, Alloc> source;
std::deque deq(source, ConvertibleToAlloc(2));
static_assert(std::is_same_v<decltype(deq), decltype(source)>);
}
{
std::deque<short, Alloc> source;
std::deque deq(std::move(source), Alloc(2));
static_assert(std::is_same_v<decltype(deq), decltype(source)>);
}
{
std::deque<short, Alloc> source;
std::deque deq(std::move(source), ConvertibleToAlloc(2));
static_assert(std::is_same_v<decltype(deq), decltype(source)>);
}
}
return 0;
}
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