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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// constexpr auto end();
#include <cassert>
#include <ranges>
#include <type_traits>
#include <utility>
#include "test_iterators.h"
struct View : std::ranges::view_base {
int* begin() const;
int* end() const;
};
// Test that end is not const
template <class T>
concept HasEnd = requires(T t) { t.end(); };
static_assert(HasEnd<std::ranges::split_view<View, View>>);
static_assert(!HasEnd<const std::ranges::split_view<View, View>>);
constexpr bool test() {
// return iterator
{
int buffer[] = {1, 2, -1, 4, 5, 6, 5, 4, -1, 2, 1};
auto inputView = std::views::all(buffer);
static_assert(std::ranges::common_range<decltype(inputView)>);
std::ranges::split_view sv(buffer, -1);
using SplitIter = std::ranges::iterator_t<decltype(sv)>;
std::same_as<SplitIter> decltype(auto) sentinel = sv.end();
assert(sentinel.base() == buffer + 11);
}
// return sentinel
{
using Iter = int*;
using Sent = sentinel_wrapper<Iter>;
using Range = std::ranges::subrange<Iter, Sent>;
int buffer[] = {1, 2, -1, 4, 5, 6, 5, 4, -1, 2, 1};
Range range = {buffer, Sent{buffer + 11}};
static_assert(!std::ranges::common_range<Range>);
std::ranges::split_view sv(range, -1);
auto sentinel = sv.end();
using SplitIter = std::ranges::iterator_t<decltype(sv)>;
static_assert(!std::same_as<decltype(sentinel), SplitIter>);
assert(std::next(sv.begin(), 3) == sentinel);
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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