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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>
// reference operator[](size_type __i);
// const_reference operator[](size_type __i) const;
//
// reference at(size_type __i);
// const_reference at(size_type __i) const;
//
// reference front();
// const_reference front() const;
//
// reference back();
// const_reference back() const;
// libc++ marks these as 'noexcept'
#include <deque>
#include <cassert>
#include "min_allocator.h"
#include "test_macros.h"
template <class C>
C
make(int size, int start = 0 )
{
const int b = 4096 / sizeof(int);
int init = 0;
if (start > 0)
{
init = (start+1) / b + ((start+1) % b != 0);
init *= b;
--init;
}
C c(init, 0);
for (int i = 0; i < init-start; ++i)
c.pop_back();
for (int i = 0; i < size; ++i)
c.push_back(i);
for (int i = 0; i < start; ++i)
c.pop_front();
return c;
}
int main(int, char**)
{
{
typedef std::deque<int> C;
C c = make<std::deque<int> >(10);
ASSERT_SAME_TYPE(decltype(c[0]), C::reference);
LIBCPP_ASSERT_NOEXCEPT( c[0]);
LIBCPP_ASSERT_NOEXCEPT( c.front());
ASSERT_SAME_TYPE(decltype(c.front()), C::reference);
LIBCPP_ASSERT_NOEXCEPT( c.back());
ASSERT_SAME_TYPE(decltype(c.back()), C::reference);
for (int i = 0; i < 10; ++i)
assert(c[i] == i);
for (int i = 0; i < 10; ++i)
assert(c.at(i) == i);
assert(c.front() == 0);
assert(c.back() == 9);
}
{
typedef std::deque<int> C;
const C c = make<std::deque<int> >(10);
ASSERT_SAME_TYPE(decltype(c[0]), C::const_reference);
LIBCPP_ASSERT_NOEXCEPT( c[0]);
LIBCPP_ASSERT_NOEXCEPT( c.front());
ASSERT_SAME_TYPE(decltype(c.front()), C::const_reference);
LIBCPP_ASSERT_NOEXCEPT( c.back());
ASSERT_SAME_TYPE(decltype(c.back()), C::const_reference);
for (int i = 0; i < 10; ++i)
assert(c[i] == i);
for (int i = 0; i < 10; ++i)
assert(c.at(i) == i);
assert(c.front() == 0);
assert(c.back() == 9);
}
#if TEST_STD_VER >= 11
{
typedef std::deque<int, min_allocator<int>> C;
C c = make<std::deque<int, min_allocator<int>> >(10);
ASSERT_SAME_TYPE(decltype(c[0]), C::reference);
LIBCPP_ASSERT_NOEXCEPT( c[0]);
LIBCPP_ASSERT_NOEXCEPT( c.front());
ASSERT_SAME_TYPE(decltype(c.front()), C::reference);
LIBCPP_ASSERT_NOEXCEPT( c.back());
ASSERT_SAME_TYPE(decltype(c.back()), C::reference);
for (int i = 0; i < 10; ++i)
assert(c[i] == i);
for (int i = 0; i < 10; ++i)
assert(c.at(i) == i);
assert(c.front() == 0);
assert(c.back() == 9);
}
{
typedef std::deque<int, min_allocator<int>> C;
const C c = make<std::deque<int, min_allocator<int>> >(10);
ASSERT_SAME_TYPE(decltype(c[0]), C::const_reference);
LIBCPP_ASSERT_NOEXCEPT( c[0]);
LIBCPP_ASSERT_NOEXCEPT( c.front());
ASSERT_SAME_TYPE(decltype(c.front()), C::const_reference);
LIBCPP_ASSERT_NOEXCEPT( c.back());
ASSERT_SAME_TYPE(decltype(c.back()), C::const_reference);
for (int i = 0; i < 10; ++i)
assert(c[i] == i);
for (int i = 0; i < 10; ++i)
assert(c.at(i) == i);
assert(c.front() == 0);
assert(c.back() == 9);
}
#endif
return 0;
}
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