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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
// UNSUPPORTED: libcpp-has-no-incomplete-ranges
// class std::ranges::lazy_split_view;
#include <ranges>
#include <cassert>
#include <concepts>
#include <string_view>
#include <type_traits>
#include "types.h"
using V = SplitViewForward;
static_assert(std::is_base_of_v<std::ranges::view_interface<SplitViewForward>, SplitViewForward>);
constexpr bool test() {
using namespace std::string_view_literals;
// empty()
{
{
std::ranges::lazy_split_view v("abc def", " ");
assert(!v.empty());
}
{
// Note: an empty string literal would still produce a non-empty output because the terminating zero is treated as
// a separate character; hence the use of `string_view`.
std::ranges::lazy_split_view v(""sv, "");
assert(v.empty());
}
}
// operator bool()
{
{
std::ranges::lazy_split_view v("abc", "");
assert(v);
}
{
// Note: an empty string literal would still produce a non-empty output because the terminating zero is treated as
// a separate character; hence the use of `string_view`.
std::ranges::lazy_split_view v(""sv, "");
assert(!v);
}
}
// front()
{
SplitViewForward v("abc", "");
assert(*(v.front()).begin() == 'a');
}
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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