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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: no-localization
// UNSUPPORTED: c++03, c++11, c++14, c++17
// iterator(const iterator&) = delete;
// iterator(iterator&&) = default;
// iterator& operator=(const iterator&) = delete;
// iterator& operator=(iterator&&) = default;
#include <cassert>
#include <ranges>
#include <sstream>
#include <type_traits>
#include "test_macros.h"
#include "../utils.h"
template <class CharT>
using Iter = std::ranges::iterator_t<std::ranges::basic_istream_view<int, CharT>>;
static_assert(!std::copy_constructible<Iter<char>>);
static_assert(!std::is_copy_assignable_v<Iter<char>>);
static_assert(std::move_constructible<Iter<char>>);
static_assert(std::is_move_assignable_v<Iter<char>>);
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
static_assert(!std::copy_constructible<Iter<wchar_t>>);
static_assert(!std::is_copy_assignable_v<Iter<wchar_t>>);
static_assert(std::move_constructible<Iter<wchar_t>>);
static_assert(std::is_move_assignable_v<Iter<wchar_t>>);
#endif
template <class CharT>
void test() {
// test move constructor
{
auto iss = make_string_stream<CharT>("12 3");
std::ranges::basic_istream_view<int, CharT> isv{iss};
auto it = isv.begin();
auto it2 = std::move(it);
assert(*it2 == 12);
}
// test move assignment
{
auto iss1 = make_string_stream<CharT>("12 3");
std::ranges::basic_istream_view<int, CharT> isv1{iss1};
auto iss2 = make_string_stream<CharT>("45 6");
std::ranges::basic_istream_view<int, CharT> isv2{iss2};
auto it1 = isv1.begin();
assert(*it1 == 12);
it1 = isv2.begin();
assert(*it1 == 45);
}
}
int main(int, char**) {
test<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<wchar_t>();
#endif
return 0;
}
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