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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
//
//===----------------------------------------------------------------------===//
// <vector>
// 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' (except 'at')
#include <vector>
#include <cassert>
#include "min_allocator.h"
#include "test_macros.h"
template <class C>
C
make(int size, int start = 0)
{
C c;
for (int i = 0; i < size; ++i)
c.push_back(start + i);
return c;
}
int main(int, char**)
{
{
typedef std::vector<int> C;
C c = make<C>(10);
LIBCPP_ASSERT_NOEXCEPT(c[0]);
LIBCPP_ASSERT_NOEXCEPT(c.front());
LIBCPP_ASSERT_NOEXCEPT(c.back());
// at() is NOT noexcept
ASSERT_SAME_TYPE(C::reference, decltype(c[0]));
ASSERT_SAME_TYPE(C::reference, decltype(c.at(0)));
ASSERT_SAME_TYPE(C::reference, decltype(c.front()));
ASSERT_SAME_TYPE(C::reference, decltype(c.back()));
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::vector<int> C;
const int N = 5;
const C c = make<C>(10, N);
LIBCPP_ASSERT_NOEXCEPT(c[0]);
LIBCPP_ASSERT_NOEXCEPT(c.front());
LIBCPP_ASSERT_NOEXCEPT(c.back());
// at() is NOT noexcept
ASSERT_SAME_TYPE(C::const_reference, decltype(c[0]));
ASSERT_SAME_TYPE(C::const_reference, decltype(c.at(0)));
ASSERT_SAME_TYPE(C::const_reference, decltype(c.front()));
ASSERT_SAME_TYPE(C::const_reference, decltype(c.back()));
for (int i = 0; i < 10; ++i)
assert(c[i] == N + i);
for (int i = 0; i < 10; ++i)
assert(c.at(i) == N + i);
assert(c.front() == N);
assert(c.back() == N + 9);
}
#if TEST_STD_VER >= 11
{
typedef std::vector<int, min_allocator<int>> C;
const int N = 34;
C c = make<C>(10, N);
LIBCPP_ASSERT_NOEXCEPT(c[0]);
LIBCPP_ASSERT_NOEXCEPT(c.front());
LIBCPP_ASSERT_NOEXCEPT(c.back());
// at() is NOT noexcept
ASSERT_SAME_TYPE(C::reference, decltype(c[0]));
ASSERT_SAME_TYPE(C::reference, decltype(c.at(0)));
ASSERT_SAME_TYPE(C::reference, decltype(c.front()));
ASSERT_SAME_TYPE(C::reference, decltype(c.back()));
for (int i = 0; i < 10; ++i)
assert(c[i] == N + i);
for (int i = 0; i < 10; ++i)
assert(c.at(i) == N + i);
assert(c.front() == N);
assert(c.back() == N + 9);
}
{
typedef std::vector<int, min_allocator<int>> C;
const int N = 23;
const C c = make<C>(10, N);
LIBCPP_ASSERT_NOEXCEPT(c[0]);
LIBCPP_ASSERT_NOEXCEPT(c.front());
LIBCPP_ASSERT_NOEXCEPT(c.back());
// at() is NOT noexcept
ASSERT_SAME_TYPE(C::const_reference, decltype(c[0]));
ASSERT_SAME_TYPE(C::const_reference, decltype(c.at(0)));
ASSERT_SAME_TYPE(C::const_reference, decltype(c.front()));
ASSERT_SAME_TYPE(C::const_reference, decltype(c.back()));
for (int i = 0; i < 10; ++i)
assert(c[i] == N + i);
for (int i = 0; i < 10; ++i)
assert(c.at(i) == N + i);
assert(c.front() == N);
assert(c.back() == N + 9);
}
#endif
return 0;
}
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