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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
// transform_view::<iterator>::operator[]
#include <ranges>
#include "test_macros.h"
#include "../types.h"
constexpr bool test() {
int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
std::ranges::transform_view transformView1(MoveOnlyView{buff}, PlusOneMutable{});
auto iter1 = std::move(transformView1).begin() + 1;
assert(iter1[0] == 2);
assert(iter1[4] == 6);
ASSERT_NOT_NOEXCEPT(
std::declval<std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOneMutable>>>()[0]);
LIBCPP_ASSERT_NOEXCEPT(
std::declval<std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOneNoexcept>>>()[0]);
ASSERT_SAME_TYPE(
int,
decltype(std::declval<std::ranges::transform_view<RandomAccessView, PlusOneMutable>>().begin()[0]));
ASSERT_SAME_TYPE(
int&,
decltype(std::declval<std::ranges::transform_view<RandomAccessView, Increment>>().begin()[0]));
ASSERT_SAME_TYPE(
int&&,
decltype(std::declval<std::ranges::transform_view<RandomAccessView, IncrementRvalueRef>>().begin()[0]));
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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