| //===----------------------------------------------------------------------===// |
| // |
| // 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: no-localization |
| // UNSUPPORTED: libcpp-has-no-experimental-syncstream |
| |
| // <syncstream> |
| |
| // template <class charT, class traits, class Allocator> |
| // class basic_osyncstream; |
| |
| // explicit basic_osyncstream(basic_ostream& os); |
| |
| #include <cassert> |
| #include <concepts> |
| #include <syncstream> |
| #include <sstream> |
| |
| #include "test_macros.h" |
| #include "constexpr_char_traits.h" |
| #include "test_allocator.h" |
| |
| template <class CharT> |
| void test() { |
| { |
| using OS = std::basic_osyncstream<CharT>; |
| using W = std::basic_ostringstream<CharT>; |
| |
| static_assert(!std::convertible_to<std::basic_ostream<CharT>&, OS>); |
| static_assert(std::constructible_from<OS, std::basic_ostream<CharT>&>); |
| |
| { |
| W w; |
| #if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS) |
| assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0); |
| #endif |
| { |
| OS os{w}; |
| #if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS) |
| assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 1); |
| #endif |
| assert(os.get_wrapped() == w.rdbuf()); |
| assert(os.rdbuf()->get_wrapped() == w.rdbuf()); |
| assert(os.rdbuf()->get_allocator() == std::allocator<CharT>()); |
| } |
| #if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS) |
| assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0); |
| #endif |
| } |
| } |
| |
| { |
| using OS = std::basic_osyncstream<CharT, constexpr_char_traits<CharT>>; |
| using W = std::basic_ostringstream<CharT, constexpr_char_traits<CharT>>; |
| |
| static_assert(!std::convertible_to<std::basic_ostream<CharT, constexpr_char_traits<CharT>>&, OS>); |
| static_assert(std::constructible_from<OS, std::basic_ostream<CharT, constexpr_char_traits<CharT>>&>); |
| |
| { |
| W w; |
| #if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS) |
| assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0); |
| #endif |
| { |
| OS os{w}; |
| #if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS) |
| assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 1); |
| #endif |
| assert(os.get_wrapped() == w.rdbuf()); |
| assert(os.rdbuf()->get_wrapped() == w.rdbuf()); |
| assert(os.rdbuf()->get_allocator() == std::allocator<CharT>()); |
| } |
| #if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS) |
| assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0); |
| #endif |
| } |
| } |
| |
| { |
| using OS = std::basic_osyncstream<CharT, constexpr_char_traits<CharT>, test_allocator<CharT>>; |
| using W = std::basic_ostringstream<CharT, constexpr_char_traits<CharT>, test_allocator<CharT>>; |
| |
| static_assert(!std::convertible_to<std::basic_ostream<CharT, constexpr_char_traits<CharT>>&, OS>); |
| static_assert(std::constructible_from<OS, std::basic_ostream<CharT, constexpr_char_traits<CharT>>&>); |
| |
| { |
| W w; |
| #if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS) |
| assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0); |
| #endif |
| { |
| OS os{w}; |
| #if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS) |
| assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 1); |
| #endif |
| assert(os.get_wrapped() == w.rdbuf()); |
| assert(os.rdbuf()->get_wrapped() == w.rdbuf()); |
| assert(os.rdbuf()->get_allocator() == test_allocator<CharT>()); |
| } |
| #if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS) |
| assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0); |
| #endif |
| } |
| } |
| } |
| |
| int main(int, char**) { |
| test<char>(); |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| test<wchar_t>(); |
| #endif |
| |
| return 0; |
| } |