forked from OSchip/llvm-project
68 lines
1.5 KiB
C++
68 lines
1.5 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
|
|
|
|
// 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;
|
|
}
|