116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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
|
|
|
|
// <span>
|
|
|
|
// template<class It, class EndOrSize>
|
|
// span(It, EndOrSize) -> span<remove_reference_t<iter_reference_t<_It>>>;
|
|
//
|
|
// template<class T, size_t N>
|
|
// span(T (&)[N]) -> span<T, N>;
|
|
//
|
|
// template<class T, size_t N>
|
|
// span(array<T, N>&) -> span<T, N>;
|
|
//
|
|
// template<class T, size_t N>
|
|
// span(const array<T, N>&) -> span<const T, N>;
|
|
//
|
|
// template<class R>
|
|
// span(R&&) -> span<remove_reference_t<ranges::range_reference_t<R>>>;
|
|
|
|
|
|
#include <span>
|
|
#include <array>
|
|
#include <cassert>
|
|
#include <iterator>
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
#include "test_macros.h"
|
|
|
|
void test_iterator_sentinel() {
|
|
int arr[] = {1, 2, 3};
|
|
{
|
|
std::span s{std::begin(arr), std::end(arr)};
|
|
ASSERT_SAME_TYPE(decltype(s), std::span<int>);
|
|
assert(s.size() == std::size(arr));
|
|
assert(s.data() == std::data(arr));
|
|
}
|
|
{
|
|
std::span s{std::begin(arr), 3};
|
|
ASSERT_SAME_TYPE(decltype(s), std::span<int>);
|
|
assert(s.size() == std::size(arr));
|
|
assert(s.data() == std::data(arr));
|
|
}
|
|
}
|
|
|
|
void test_c_array() {
|
|
{
|
|
int arr[] = {1, 2, 3};
|
|
std::span s{arr};
|
|
ASSERT_SAME_TYPE(decltype(s), std::span<int, 3>);
|
|
assert(s.size() == std::size(arr));
|
|
assert(s.data() == std::data(arr));
|
|
}
|
|
|
|
{
|
|
const int arr[] = {1,2,3};
|
|
std::span s{arr};
|
|
ASSERT_SAME_TYPE(decltype(s), std::span<const int, 3>);
|
|
assert(s.size() == std::size(arr));
|
|
assert(s.data() == std::data(arr));
|
|
}
|
|
}
|
|
|
|
void test_std_array() {
|
|
{
|
|
std::array<double, 4> arr = {1.0, 2.0, 3.0, 4.0};
|
|
std::span s{arr};
|
|
ASSERT_SAME_TYPE(decltype(s), std::span<double, 4>);
|
|
assert(s.size() == arr.size());
|
|
assert(s.data() == arr.data());
|
|
}
|
|
|
|
{
|
|
const std::array<long, 5> arr = {4, 5, 6, 7, 8};
|
|
std::span s{arr};
|
|
ASSERT_SAME_TYPE(decltype(s), std::span<const long, 5>);
|
|
assert(s.size() == arr.size());
|
|
assert(s.data() == arr.data());
|
|
}
|
|
}
|
|
|
|
void test_range_std_container() {
|
|
{
|
|
std::string str{"ABCDE"};
|
|
std::span s{str};
|
|
ASSERT_SAME_TYPE(decltype(s), std::span<char>);
|
|
assert(s.size() == str.size());
|
|
assert(s.data() == str.data());
|
|
}
|
|
|
|
{
|
|
const std::string str{"QWERTYUIOP"};
|
|
std::span s{str};
|
|
ASSERT_SAME_TYPE(decltype(s), std::span<const char>);
|
|
assert(s.size() == str.size());
|
|
assert(s.data() == str.data());
|
|
}
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
test_iterator_sentinel();
|
|
test_c_array();
|
|
test_std_array();
|
|
test_range_std_container();
|
|
|
|
return 0;
|
|
}
|