forked from OSchip/llvm-project
40 lines
1.4 KiB
C++
40 lines
1.4 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
|
|
// UNSUPPORTED: libcpp-no-concepts
|
|
// UNSUPPORTED: libcpp-has-no-incomplete-ranges
|
|
|
|
// template<class T>
|
|
// inline constexpr bool enable_borrowed_range<take_view<T>> = enable_borrowed_range<T>;
|
|
|
|
#include <ranges>
|
|
#include <cassert>
|
|
|
|
#include "test_iterators.h"
|
|
|
|
struct View : std::ranges::view_base {
|
|
friend int* begin(View&);
|
|
friend int* begin(View const&);
|
|
friend sentinel_wrapper<int*> end(View&);
|
|
friend sentinel_wrapper<int*> end(View const&);
|
|
};
|
|
|
|
struct BorrowableView : std::ranges::view_base {
|
|
friend int* begin(BorrowableView&);
|
|
friend int* begin(BorrowableView const&);
|
|
friend sentinel_wrapper<int*> end(BorrowableView&);
|
|
friend sentinel_wrapper<int*> end(BorrowableView const&);
|
|
};
|
|
|
|
template<>
|
|
inline constexpr bool std::ranges::enable_borrowed_range<BorrowableView> = true;
|
|
|
|
static_assert(!std::ranges::enable_borrowed_range<std::ranges::take_view<View>>);
|
|
static_assert( std::ranges::enable_borrowed_range<std::ranges::take_view<BorrowableView>>);
|