| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <iterator> |
| |
| // template<class charT, class traits = char_traits<charT> > |
| // class istreambuf_iterator |
| // : public iterator<input_iterator_tag, charT, traits::off_type, unspecified, charT> // until C++17 |
| // { |
| // public: |
| // typedef input_iterator_tag iterator_category; |
| // typedef charT value_type; |
| // typedef traits::off_type difference_type; |
| // typedef unspecified pointer; |
| // typedef charT reference; |
| // |
| // typedef charT char_type; |
| // typedef traits traits_type; |
| // typedef traits::int_type int_type; |
| // typedef basic_streambuf<charT, traits> streambuf_type; |
| // typedef basic_istream<charT, traits> istream_type; |
| // ... |
| // |
| // All specializations of istreambuf_iterator shall have a trivial copy constructor, |
| // a constexpr default constructor and a trivial destructor. |
| |
| #include <iterator> |
| #include <string> |
| #include <type_traits> |
| |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| { |
| typedef std::istreambuf_iterator<char> I1; |
| #if TEST_STD_VER <= 14 |
| typedef std::iterator<std::input_iterator_tag, char, std::char_traits<char>::off_type, char*, char> iterator_base; |
| static_assert((std::is_base_of<iterator_base, I1>::value), ""); |
| #endif |
| static_assert((std::is_same<I1::iterator_category, std::input_iterator_tag>::value), ""); |
| static_assert((std::is_same<I1::value_type, char>::value), ""); |
| static_assert((std::is_same<I1::difference_type, std::char_traits<char>::off_type>::value), ""); |
| LIBCPP_STATIC_ASSERT((std::is_same<I1::pointer, char*>::value), ""); |
| static_assert((std::is_same<I1::reference, char>::value), ""); |
| static_assert((std::is_same<I1::char_type, char>::value), ""); |
| static_assert((std::is_same<I1::traits_type, std::char_traits<char> >::value), ""); |
| static_assert((std::is_same<I1::int_type, I1::traits_type::int_type>::value), ""); |
| static_assert((std::is_same<I1::streambuf_type, std::streambuf>::value), ""); |
| static_assert((std::is_same<I1::istream_type, std::istream>::value), ""); |
| static_assert((std::is_nothrow_default_constructible<I1>::value), "" ); |
| static_assert((std::is_trivially_copy_constructible<I1>::value), "" ); |
| static_assert((std::is_trivially_destructible<I1>::value), "" ); |
| } |
| |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| { |
| typedef std::istreambuf_iterator<wchar_t> I2; |
| #if TEST_STD_VER <= 14 |
| typedef std::iterator<std::input_iterator_tag, wchar_t, std::char_traits<wchar_t>::off_type, wchar_t*, wchar_t> iterator_base; |
| static_assert((std::is_base_of<iterator_base, I2>::value), ""); |
| #endif |
| static_assert((std::is_same<I2::iterator_category, std::input_iterator_tag>::value), ""); |
| static_assert((std::is_same<I2::value_type, wchar_t>::value), ""); |
| static_assert((std::is_same<I2::difference_type, std::char_traits<wchar_t>::off_type>::value), ""); |
| LIBCPP_STATIC_ASSERT((std::is_same<I2::pointer, wchar_t*>::value), ""); |
| static_assert((std::is_same<I2::reference, wchar_t>::value), ""); |
| static_assert((std::is_same<I2::char_type, wchar_t>::value), ""); |
| static_assert((std::is_same<I2::traits_type, std::char_traits<wchar_t> >::value), ""); |
| static_assert((std::is_same<I2::int_type, I2::traits_type::int_type>::value), ""); |
| static_assert((std::is_same<I2::streambuf_type, std::wstreambuf>::value), ""); |
| static_assert((std::is_same<I2::istream_type, std::wistream>::value), ""); |
| static_assert((std::is_nothrow_default_constructible<I2>::value), "" ); |
| static_assert((std::is_trivially_copy_constructible<I2>::value), "" ); |
| static_assert((std::is_trivially_destructible<I2>::value), "" ); |
| } |
| #endif // TEST_HAS_NO_WIDE_CHARACTERS |
| |
| return 0; |
| } |