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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
// class transform_view::<sentinel>;
#include <ranges>
#include "test_macros.h"
#include "../types.h"
template<class T>
concept EndIsIter = requires(T t) { ++t.end(); };
constexpr bool test() {
std::ranges::transform_view<SizedSentinelView, PlusOne> transformView1;
// Going to const and back.
auto sent1 = transformView1.end();
std::ranges::sentinel_t<const std::ranges::transform_view<SizedSentinelView, PlusOne>> sent2{sent1};
std::ranges::sentinel_t<const std::ranges::transform_view<SizedSentinelView, PlusOne>> sent3{sent2};
(void)sent3;
static_assert(!EndIsIter<decltype(sent1)>);
static_assert(!EndIsIter<decltype(sent2)>);
assert(sent1.base() == globalBuff + 8);
std::ranges::transform_view transformView2(SizedSentinelView{4}, PlusOne());
auto sent4 = transformView2.end();
auto iter = transformView1.begin();
{
assert(iter != sent1);
assert(iter != sent2);
assert(iter != sent4);
}
{
assert(iter + 8 == sent1);
assert(iter + 8 == sent2);
assert(iter + 4 == sent4);
}
{
assert(sent1 - iter == 8);
assert(sent4 - iter == 4);
assert(iter - sent1 == -8);
assert(iter - sent4 == -4);
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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