| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| |
| // std::ranges::lazy_split_view::outer-iterator::value_type::begin() |
| |
| #include <ranges> |
| |
| #include <cassert> |
| #include "../types.h" |
| |
| constexpr bool test() { |
| // `View` is a forward range. |
| { |
| CopyableView input("a"); |
| |
| // Non-const. |
| { |
| SplitViewCopyable v(input, "b"); |
| auto val = *v.begin(); |
| assert(val.begin().base() == input.begin()); |
| } |
| |
| // Const. |
| { |
| SplitViewCopyable v(input, "b"); |
| const auto val = *v.begin(); |
| assert(val.begin().base() == input.begin()); |
| } |
| } |
| |
| // `View` is an input range. |
| { |
| InputView input("a"); |
| |
| // Non-const. |
| { |
| SplitViewInput v(input, 'b'); |
| auto val = *v.begin(); |
| // Copies of `InputView` are independent and the iterators won't compare the same. |
| assert(*val.begin().base() == *input.begin()); |
| } |
| |
| // Const. |
| { |
| SplitViewInput v(input, 'b'); |
| const auto val = *v.begin(); |
| // Copies of `InputView` are independent and the iterators won't compare the same. |
| assert(*val.begin().base() == *input.begin()); |
| } |
| } |
| |
| return true; |
| } |
| |
| int main(int, char**) { |
| assert(test()); |
| static_assert(test()); |
| |
| return 0; |
| } |