| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| |
| // UNSUPPORTED: availability-filesystem-missing |
| |
| // <fstream> |
| |
| // plate <class charT, class traits = char_traits<charT> > |
| // class basic_ofstream |
| |
| // template<class T> |
| // explicit basic_ifstream(const T& s, ios_base::openmode mode = ios_base::in); // Since C++17 |
| // Constraints: is_same_v<T, filesystem::path> is true |
| |
| #include <cassert> |
| #include <filesystem> |
| #include <fstream> |
| #include <type_traits> |
| |
| #include "platform_support.h" |
| #include "test_macros.h" |
| #include "test_iterators.h" |
| |
| namespace fs = std::filesystem; |
| |
| template <class CharT> |
| constexpr bool test_non_convert_to_path() { |
| // String types |
| static_assert(!std::is_constructible_v<std::ofstream, std::basic_string_view<CharT>>); |
| static_assert(!std::is_constructible_v<std::ofstream, const std::basic_string_view<CharT>>); |
| |
| // Char* pointers |
| if constexpr (!std::is_same_v<CharT, char>) |
| static_assert(!std::is_constructible_v<std::ofstream, const CharT*>); |
| |
| // Iterators |
| static_assert(!std::is_convertible_v<std::ofstream, cpp17_input_iterator<const CharT*>>); |
| |
| return true; |
| } |
| |
| static_assert(test_non_convert_to_path<char>()); |
| |
| #if !defined(TEST_HAS_NO_WIDE_CHARACTERS) && !defined(TEST_HAS_OPEN_WITH_WCHAR) |
| static_assert(test_non_convert_to_path<wchar_t>()); |
| #endif // !TEST_HAS_NO_WIDE_CHARACTERS && !TEST_HAS_OPEN_WITH_WCHAR |
| |
| #ifndef TEST_HAS_NO_CHAR8_T |
| static_assert(test_non_convert_to_path<char8_t>()); |
| #endif // TEST_HAS_NO_CHAR8_T |
| |
| static_assert(test_non_convert_to_path<char16_t>()); |
| static_assert(test_non_convert_to_path<char32_t>()); |
| |
| int main(int, char**) { |
| fs::path p = get_temp_file_name(); |
| { |
| static_assert(!std::is_convertible<fs::path, std::ofstream>::value, |
| "ctor should be explicit"); |
| static_assert(std::is_constructible<std::ofstream, fs::path const&, |
| std::ios_base::openmode>::value, |
| ""); |
| } |
| { |
| std::ofstream stream(p); |
| stream << 3.25; |
| } |
| { |
| std::ifstream stream(p); |
| double x = 0; |
| stream >> x; |
| assert(x == 3.25); |
| } |
| { |
| std::ifstream stream(p, std::ios_base::out); |
| double x = 0; |
| stream >> x; |
| assert(x == 3.25); |
| } |
| std::remove(p.string().c_str()); |
| |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| { |
| std::wofstream stream(p); |
| stream << 3.25; |
| } |
| { |
| std::wifstream stream(p); |
| double x = 0; |
| stream >> x; |
| assert(x == 3.25); |
| } |
| { |
| std::wifstream stream(p, std::ios_base::out); |
| double x = 0; |
| stream >> x; |
| assert(x == 3.25); |
| } |
| std::remove(p.string().c_str()); |
| #endif |
| |
| return 0; |
| } |