|  | // -*- C++ -*- | 
|  | //===----------------------------------------------------------------------===// | 
|  | // | 
|  | // 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 | 
|  | // | 
|  | //===----------------------------------------------------------------------===// | 
|  |  | 
|  | #ifndef _LIBCPP_SSTREAM | 
|  | #define _LIBCPP_SSTREAM | 
|  |  | 
|  | // clang-format off | 
|  |  | 
|  | /* | 
|  | sstream synopsis [sstream.syn] | 
|  |  | 
|  | // Class template basic_stringbuf [stringbuf] | 
|  | template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > | 
|  | class basic_stringbuf | 
|  | : public basic_streambuf<charT, traits> | 
|  | { | 
|  | public: | 
|  | typedef charT                          char_type; | 
|  | typedef traits                         traits_type; | 
|  | typedef typename traits_type::int_type int_type; | 
|  | typedef typename traits_type::pos_type pos_type; | 
|  | typedef typename traits_type::off_type off_type; | 
|  | typedef Allocator                      allocator_type; | 
|  |  | 
|  | // [stringbuf.cons] constructors: | 
|  | explicit basic_stringbuf(ios_base::openmode which = ios_base::in | ios_base::out); // before C++20 | 
|  | basic_stringbuf() : basic_stringbuf(ios_base::in | ios_base::out) {}               // C++20 | 
|  | explicit basic_stringbuf(ios_base::openmode which);                                // C++20 | 
|  | explicit basic_stringbuf(const basic_string<char_type, traits_type, allocator_type>& s, | 
|  | ios_base::openmode which = ios_base::in | ios_base::out); | 
|  | explicit basic_stringbuf(const allocator_type& a) | 
|  | : basic_stringbuf(ios_base::in | ios_base::out, a) {}                          // C++20 | 
|  | basic_stringbuf(ios_base::openmode which, const allocator_type& a);                // C++20 | 
|  | explicit basic_stringbuf(basic_string<char_type, traits_type, allocator_type>&& s, | 
|  | ios_base::openmode which = ios_base::in | ios_base::out); // C++20 | 
|  | template <class SAlloc> | 
|  | basic_stringbuf(const basic_string<char_type, traits_type, SAlloc>& s, const allocator_type& a) | 
|  | : basic_stringbuf(s, ios_base::in | ios_base::out, a) {}                       // C++20 | 
|  | template <class SAlloc> | 
|  | basic_stringbuf(const basic_string<char_type, traits_type, SAlloc>& s, | 
|  | ios_base::openmode which, const allocator_type& a);                // C++20 | 
|  | template <class SAlloc> | 
|  | explicit basic_stringbuf(const basic_string<char_type, traits_type, SAlloc>& s, | 
|  | ios_base::openmode which = ios_base::in | ios_base::out); // C++20 | 
|  | template<class T> | 
|  | explicit basic_stringbuf(const T& t, | 
|  | ios_base::openmode which = ios_base::in | ios_base::out); // Since C++26 | 
|  | template<class T> | 
|  | basic_stringbuf(const T& t, const Allocator& a);                                   // Since C++26 | 
|  | template<class T> | 
|  | basic_stringbuf(const T& t, ios_base::openmode which, const Allocator& a);         // Since C++26 | 
|  | basic_stringbuf(const basic_stringbuf&) = delete; | 
|  | basic_stringbuf(basic_stringbuf&& rhs); | 
|  | basic_stringbuf(basic_stringbuf&& rhs, const allocator_type& a);                   // C++20 | 
|  |  | 
|  | // [stringbuf.assign] Assign and swap: | 
|  | basic_stringbuf& operator=(const basic_stringbuf&) = delete; | 
|  | basic_stringbuf& operator=(basic_stringbuf&& rhs); | 
|  | void swap(basic_stringbuf& rhs) noexcept(see below);                               // conditionally noexcept since C++20 | 
|  |  | 
|  | // [stringbuf.members] Member functions: | 
|  | allocator_type get_allocator() const noexcept;                                     // C++20 | 
|  | basic_string<char_type, traits_type, allocator_type> str() const;                  // before C++20 | 
|  | basic_string<char_type, traits_type, allocator_type> str() const &;                // C++20 | 
|  | template <class SAlloc> | 
|  | basic_string<char_type, traits_type, SAlloc> str(const SAlloc& sa) const;          // C++20 | 
|  | basic_string<char_type, traits_type, allocator_type> str() &&;                     // C++20 | 
|  | basic_string_view<char_type, traits_type> view() const noexcept;                   // C++20 | 
|  | void str(const basic_string<char_type, traits_type, allocator_type>& s); | 
|  | template <class SAlloc> | 
|  | void str(const basic_string<char_type, traits_type, SAlloc>& s);                   // C++20 | 
|  | void str(basic_string<char_type, traits_type, allocator_type>&& s);                // C++20 | 
|  | template<class T> | 
|  | void str(const T& t);                                                            // Since C++26 | 
|  |  | 
|  | protected: | 
|  | // [stringbuf.virtuals] Overridden virtual functions: | 
|  | virtual int_type underflow(); | 
|  | virtual int_type pbackfail(int_type c = traits_type::eof()); | 
|  | virtual int_type overflow (int_type c = traits_type::eof()); | 
|  | virtual basic_streambuf<char_type, traits_type>* setbuf(char_type*, streamsize); | 
|  | virtual pos_type seekoff(off_type off, ios_base::seekdir way, | 
|  | ios_base::openmode which = ios_base::in | ios_base::out); | 
|  | virtual pos_type seekpos(pos_type sp, | 
|  | ios_base::openmode which = ios_base::in | ios_base::out); | 
|  | }; | 
|  |  | 
|  | // [stringbuf.assign] non member swap | 
|  | template <class charT, class traits, class Allocator> | 
|  | void swap(basic_stringbuf<charT, traits, Allocator>& x, | 
|  | basic_stringbuf<charT, traits, Allocator>& y); // conditionally noexcept since C++20 | 
|  |  | 
|  | typedef basic_stringbuf<char>    stringbuf; | 
|  | typedef basic_stringbuf<wchar_t> wstringbuf; | 
|  |  | 
|  | // Class template basic_istringstream [istringstream] | 
|  | template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > | 
|  | class basic_istringstream | 
|  | : public basic_istream<charT, traits> | 
|  | { | 
|  | public: | 
|  | typedef charT                          char_type; | 
|  | typedef traits                         traits_type; | 
|  | typedef typename traits_type::int_type int_type; | 
|  | typedef typename traits_type::pos_type pos_type; | 
|  | typedef typename traits_type::off_type off_type; | 
|  | typedef Allocator                      allocator_type; | 
|  |  | 
|  | // [istringstream.cons] Constructors: | 
|  | explicit basic_istringstream(ios_base::openmode which = ios_base::in);             // before C++20 | 
|  | basic_istringstream() : basic_istringstream(ios_base::in) {}                       // C++20 | 
|  | explicit basic_istringstream(ios_base::openmode which);                            // C++20 | 
|  | explicit basic_istringstream(const basic_string<char_type, traits_type, allocator_type>& s, | 
|  | ios_base::openmode which = ios_base::in); | 
|  | basic_istringstream(ios_base::openmode which, const allocator_type& a);            // C++20 | 
|  | explicit basic_istringstream(basic_string<char_type, traits_type, allocator_type>&& s, | 
|  | ios_base::openmode which = ios_base::in);             // C++20 | 
|  | template <class SAlloc> | 
|  | basic_istringstream(const basic_string<char_type, traits_type, SAlloc>& s, const allocator_type& a) | 
|  | : basic_istringstream(s, ios_base::in, a) {}                                   // C++20 | 
|  | template <class SAlloc> | 
|  | basic_istringstream(const basic_string<char_type, traits_type, SAlloc>& s, | 
|  | ios_base::openmode which, const allocator_type& a);            // C++20 | 
|  | template <class SAlloc> | 
|  | explicit basic_istringstream(const basic_string<char_type, traits_type, SAlloc>& s, | 
|  | ios_base::openmode which = ios_base::in);             // C++20 | 
|  | template<class T> | 
|  | explicit basic_istringstream(const T& t, ios_base::openmode which = ios_base::in); // Since C++26 | 
|  | template<class T> | 
|  | basic_istringstream(const T& t, const Allocator& a);                               // Since C++26 | 
|  | template<class T> | 
|  | basic_istringstream(const T& t, ios_base::openmode which, const Allocator& a);     // Since C++26 | 
|  | basic_istringstream(const basic_istringstream&) = delete; | 
|  | basic_istringstream(basic_istringstream&& rhs); | 
|  |  | 
|  | // [istringstream.assign] Assign and swap: | 
|  | basic_istringstream& operator=(const basic_istringstream&) = delete; | 
|  | basic_istringstream& operator=(basic_istringstream&& rhs); | 
|  | void swap(basic_istringstream& rhs); | 
|  |  | 
|  | // [istringstream.members] Member functions: | 
|  | basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const; | 
|  | basic_string<char_type, traits_type, allocator_type> str() const;                  // before C++20 | 
|  | basic_string<char_type, traits_type, allocator_type> str() const &;                // C++20 | 
|  | template <class SAlloc> | 
|  | basic_string<char_type, traits_type, SAlloc> str(const SAlloc& sa) const;          // C++20 | 
|  | basic_string<char_type, traits_type, allocator_type> str() &&;                     // C++20 | 
|  | basic_string_view<char_type, traits_type> view() const noexcept;                   // C++20 | 
|  | void str(const basic_string<char_type, traits_type, allocator_type>& s); | 
|  | template <class SAlloc> | 
|  | void str(const basic_string<char_type, traits_type, SAlloc>& s);                   // C++20 | 
|  | void str(basic_string<char_type, traits_type, allocator_type>&& s);                // C++20 | 
|  | template<class T> | 
|  | void str(const T& t);                                                            // Since C++26 | 
|  | }; | 
|  |  | 
|  | template <class charT, class traits, class Allocator> | 
|  | void swap(basic_istringstream<charT, traits, Allocator>& x, | 
|  | basic_istringstream<charT, traits, Allocator>& y); | 
|  |  | 
|  | typedef basic_istringstream<char>    istringstream; | 
|  | typedef basic_istringstream<wchar_t> wistringstream; | 
|  |  | 
|  | // Class template basic_ostringstream [ostringstream] | 
|  | template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > | 
|  | class basic_ostringstream | 
|  | : public basic_ostream<charT, traits> | 
|  | { | 
|  | public: | 
|  | // types: | 
|  | typedef charT                          char_type; | 
|  | typedef traits                         traits_type; | 
|  | typedef typename traits_type::int_type int_type; | 
|  | typedef typename traits_type::pos_type pos_type; | 
|  | typedef typename traits_type::off_type off_type; | 
|  | typedef Allocator                      allocator_type; | 
|  |  | 
|  | // [ostringstream.cons] Constructors: | 
|  | explicit basic_ostringstream(ios_base::openmode which = ios_base::out);            // before C++20 | 
|  | basic_ostringstream() : basic_ostringstream(ios_base::out) {}                      // C++20 | 
|  | explicit basic_ostringstream(ios_base::openmode which);                            // C++20 | 
|  | explicit basic_ostringstream(const basic_string<char_type, traits_type, allocator_type>& s, | 
|  | ios_base::openmode which = ios_base::out); | 
|  | basic_ostringstream(ios_base::openmode which, const allocator_type& a);            // C++20 | 
|  | explicit basic_ostringstream(basic_string<char_type, traits_type, allocator_type>&& s, | 
|  | ios_base::openmode which = ios_base::out);            // C++20 | 
|  | template <class SAlloc> | 
|  | basic_ostringstream(const basic_string<char_type, traits_type, SAlloc>& s, const allocator_type& a) | 
|  | : basic_ostringstream(s, ios_base::out, a) {}                                  // C++20 | 
|  | template <class SAlloc> | 
|  | basic_ostringstream(const basic_string<char_type, traits_type, SAlloc>& s, | 
|  | ios_base::openmode which, const allocator_type& a);            // C++20 | 
|  | template <class SAlloc> | 
|  | explicit basic_ostringstream(const basic_string<char_type, traits_type, SAlloc>& s, | 
|  | ios_base::openmode which = ios_base::out);            // C++20 | 
|  | template<class T> | 
|  | explicit basic_ostringstream(const T& t, ios_base::openmode which = ios_base::out); // Since C++26 | 
|  | template<class T> | 
|  | basic_ostringstream(const T& t, const Allocator& a);                                // Since C++26 | 
|  | template<class T> | 
|  | basic_ostringstream(const T& t, ios_base::openmode which, const Allocator& a);      // Since C++26 | 
|  | basic_ostringstream(const basic_ostringstream&) = delete; | 
|  | basic_ostringstream(basic_ostringstream&& rhs); | 
|  |  | 
|  | // [ostringstream.assign] Assign and swap: | 
|  | basic_ostringstream& operator=(const basic_ostringstream&) = delete; | 
|  | basic_ostringstream& operator=(basic_ostringstream&& rhs); | 
|  | void swap(basic_ostringstream& rhs); | 
|  |  | 
|  | // [ostringstream.members] Member functions: | 
|  | basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const; | 
|  | basic_string<char_type, traits_type, allocator_type> str() const;                  // before C++20 | 
|  | basic_string<char_type, traits_type, allocator_type> str() const &;                // C++20 | 
|  | template <class SAlloc> | 
|  | basic_string<char_type, traits_type, SAlloc> str(const SAlloc& sa) const;          // C++20 | 
|  | basic_string<char_type, traits_type, allocator_type> str() &&;                     // C++20 | 
|  | basic_string_view<char_type, traits_type> view() const noexcept;                   // C++20 | 
|  | void str(const basic_string<char_type, traits_type, allocator_type>& s); | 
|  | template <class SAlloc> | 
|  | void str(const basic_string<char_type, traits_type, SAlloc>& s);                   // C++20 | 
|  | void str(basic_string<char_type, traits_type, allocator_type>&& s);                // C++20 | 
|  | template<class T> | 
|  | void str(const T& t);                                                            // Since C++26 | 
|  | }; | 
|  |  | 
|  | template <class charT, class traits, class Allocator> | 
|  | void swap(basic_ostringstream<charT, traits, Allocator>& x, | 
|  | basic_ostringstream<charT, traits, Allocator>& y); | 
|  |  | 
|  | typedef basic_ostringstream<char>    ostringstream; | 
|  | typedef basic_ostringstream<wchar_t> wostringstream; | 
|  |  | 
|  | // Class template basic_stringstream [stringstream] | 
|  | template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > | 
|  | class basic_stringstream | 
|  | : public basic_iostream<charT, traits> | 
|  | { | 
|  | public: | 
|  | // types: | 
|  | typedef charT                          char_type; | 
|  | typedef traits                         traits_type; | 
|  | typedef typename traits_type::int_type int_type; | 
|  | typedef typename traits_type::pos_type pos_type; | 
|  | typedef typename traits_type::off_type off_type; | 
|  | typedef Allocator                      allocator_type; | 
|  |  | 
|  | // [stringstream.cons] constructors | 
|  | explicit basic_stringstream(ios_base::openmode which = ios_base::out | ios_base::in); // before C++20 | 
|  | basic_stringstream() : basic_stringstream(ios_base::out | ios_base::in) {}            // C++20 | 
|  | explicit basic_stringstream(ios_base::openmode which);                                // C++20 | 
|  | explicit basic_stringstream(const basic_string<char_type, traits_type, allocator_type>& s, | 
|  | ios_base::openmode which = ios_base::out | ios_base::in); | 
|  | basic_stringstream(ios_base::openmode which, const allocator_type& a);                // C++20 | 
|  | explicit basic_stringstream(basic_string<char_type, traits_type, allocator_type>&& s, | 
|  | ios_base::openmode which = ios_base::out | ios_base::in); // C++20 | 
|  | template <class SAlloc> | 
|  | basic_stringstream(const basic_string<char_type, traits_type, SAlloc>& s, const allocator_type& a) | 
|  | : basic_stringstream(s, ios_base::out | ios_base::in, a) {}                       // C++20 | 
|  | template <class SAlloc> | 
|  | basic_stringstream(const basic_string<char_type, traits_type, SAlloc>& s, | 
|  | ios_base::openmode which, const allocator_type& a);                // C++20 | 
|  | template <class SAlloc> | 
|  | explicit basic_stringstream(const basic_string<char_type, traits_type, SAlloc>& s, | 
|  | ios_base::openmode which = ios_base::out | ios_base::in); // C++20 | 
|  | template<class T> | 
|  | explicit basic_stringstream(const T& t, | 
|  | ios_base::openmode which = ios_base::out | ios_base::in); // Since C++26 | 
|  | template<class T> | 
|  | basic_stringstream(const T& t, const Allocator& a);                                   // Since C++26 | 
|  | template<class T> | 
|  | basic_stringstream(const T& t, ios_base::openmode which, const Allocator& a);         // Since C++26 | 
|  | basic_stringstream(const basic_stringstream&) = delete; | 
|  | basic_stringstream(basic_stringstream&& rhs); | 
|  |  | 
|  | // [stringstream.assign] Assign and swap: | 
|  | basic_stringstream& operator=(const basic_stringstream&) = delete; | 
|  | basic_stringstream& operator=(basic_stringstream&& rhs); | 
|  | void swap(basic_stringstream& rhs); | 
|  |  | 
|  | // [stringstream.members] Member functions: | 
|  | basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const; | 
|  | basic_string<char_type, traits_type, allocator_type> str() const;                     // before C++20 | 
|  | basic_string<char_type, traits_type, allocator_type> str() const &;                   // C++20 | 
|  | template <class SAlloc> | 
|  | basic_string<char_type, traits_type, SAlloc> str(const SAlloc& sa) const;             // C++20 | 
|  | basic_string<char_type, traits_type, allocator_type> str() &&;                        // C++20 | 
|  | basic_string_view<char_type, traits_type> view() const noexcept;                      // C++20 | 
|  | void str(const basic_string<char_type, traits_type, allocator_type>& s); | 
|  | template <class SAlloc> | 
|  | void str(const basic_string<char_type, traits_type, SAlloc>& s);                      // C++20 | 
|  | void str(basic_string<char_type, traits_type, allocator_type>&& s);                   // C++20 | 
|  | template<class T> | 
|  | void str(const T& t);                                                               // Since C++26 | 
|  | }; | 
|  |  | 
|  | template <class charT, class traits, class Allocator> | 
|  | void swap(basic_stringstream<charT, traits, Allocator>& x, | 
|  | basic_stringstream<charT, traits, Allocator>& y); | 
|  |  | 
|  | typedef basic_stringstream<char>    stringstream; | 
|  | typedef basic_stringstream<wchar_t> wstringstream; | 
|  |  | 
|  | }  // std | 
|  |  | 
|  | */ | 
|  |  | 
|  | // clang-format on | 
|  |  | 
|  | #if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) | 
|  | #  include <__cxx03/sstream> | 
|  | #else | 
|  | #  include <__config> | 
|  |  | 
|  | #  if _LIBCPP_HAS_LOCALIZATION | 
|  |  | 
|  | #    include <__fwd/sstream.h> | 
|  | #    include <__ostream/basic_ostream.h> | 
|  | #    include <__type_traits/is_convertible.h> | 
|  | #    include <__utility/swap.h> | 
|  | #    include <ios> | 
|  | #    include <istream> | 
|  | #    include <locale> | 
|  | #    include <string> | 
|  | #    include <string_view> | 
|  | #    include <version> | 
|  |  | 
|  | #    if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | 
|  | #      pragma GCC system_header | 
|  | #    endif | 
|  |  | 
|  | _LIBCPP_PUSH_MACROS | 
|  | #    include <__undef_macros> | 
|  |  | 
|  | _LIBCPP_BEGIN_NAMESPACE_STD | 
|  |  | 
|  | // Class template basic_stringbuf [stringbuf] | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | class _LIBCPP_TEMPLATE_VIS basic_stringbuf : public basic_streambuf<_CharT, _Traits> { | 
|  | public: | 
|  | typedef _CharT char_type; | 
|  | typedef _Traits traits_type; | 
|  | typedef typename traits_type::int_type int_type; | 
|  | typedef typename traits_type::pos_type pos_type; | 
|  | typedef typename traits_type::off_type off_type; | 
|  | typedef _Allocator allocator_type; | 
|  |  | 
|  | typedef basic_string<char_type, traits_type, allocator_type> string_type; | 
|  |  | 
|  | private: | 
|  | string_type __str_; | 
|  | mutable char_type* __hm_; | 
|  | ios_base::openmode __mode_; | 
|  | _LIBCPP_HIDE_FROM_ABI void __init_buf_ptrs(); | 
|  | _LIBCPP_HIDE_FROM_ABI void __move_init(basic_stringbuf&& __rhs); | 
|  |  | 
|  | public: | 
|  | // [stringbuf.cons] constructors: | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringbuf() : __hm_(nullptr), __mode_(ios_base::in | ios_base::out) { | 
|  | // it is implementation-defined whether we initialize eback() & friends to nullptr, and libc++ doesn't | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(ios_base::openmode __wch) : __hm_(nullptr), __mode_(__wch) { | 
|  | // it is implementation-defined whether we initialize eback() & friends to nullptr, and libc++ doesn't | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(const string_type& __s, | 
|  | ios_base::openmode __wch = ios_base::in | ios_base::out) | 
|  | : __str_(__s.get_allocator()), __hm_(nullptr), __mode_(__wch) { | 
|  | str(__s); | 
|  | } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(const allocator_type& __a) | 
|  | : basic_stringbuf(ios_base::in | ios_base::out, __a) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringbuf(ios_base::openmode __wch, const allocator_type& __a) | 
|  | : __str_(__a), __hm_(nullptr), __mode_(__wch) { | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(string_type&& __s, | 
|  | ios_base::openmode __wch = ios_base::in | ios_base::out) | 
|  | : __str_(std::move(__s)), __hm_(nullptr), __mode_(__wch) { | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  |  | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI | 
|  | basic_stringbuf(const basic_string<char_type, traits_type, _SAlloc>& __s, const allocator_type& __a) | 
|  | : basic_stringbuf(__s, ios_base::in | ios_base::out, __a) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringbuf( | 
|  | const basic_string<char_type, traits_type, _SAlloc>& __s, ios_base::openmode __wch, const allocator_type& __a) | 
|  | : __str_(__s, __a), __hm_(nullptr), __mode_(__wch) { | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  |  | 
|  | template <class _SAlloc> | 
|  | requires(!is_same_v<_SAlloc, allocator_type>) | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(const basic_string<char_type, traits_type, _SAlloc>& __s, | 
|  | ios_base::openmode __wch = ios_base::in | ios_base::out) | 
|  | : __str_(__s), __hm_(nullptr), __mode_(__wch) { | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringbuf(const _Tp& __t, | 
|  | ios_base::openmode __which = ios_base::in | ios_base::out) | 
|  | : basic_stringbuf(__t, __which, _Allocator()) {} | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringbuf(const _Tp& __t, const _Allocator& __a) | 
|  | : basic_stringbuf(__t, ios_base::in | ios_base::out, __a) {} | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringbuf(const _Tp& __t, ios_base::openmode __which, const _Allocator& __a) | 
|  | : __hm_(nullptr), __mode_(__which) { | 
|  | basic_string_view<_CharT, _Traits> __sv = __t; | 
|  | __str_                                  = string_type(__sv, __a); | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  |  | 
|  | #    endif //  _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | basic_stringbuf(const basic_stringbuf&) = delete; | 
|  | basic_stringbuf(basic_stringbuf&& __rhs) : __mode_(__rhs.__mode_) { __move_init(std::move(__rhs)); } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringbuf(basic_stringbuf&& __rhs, const allocator_type& __a) | 
|  | : basic_stringbuf(__rhs.__mode_, __a) { | 
|  | __move_init(std::move(__rhs)); | 
|  | } | 
|  | #    endif | 
|  |  | 
|  | // [stringbuf.assign] Assign and swap: | 
|  | basic_stringbuf& operator=(const basic_stringbuf&) = delete; | 
|  | basic_stringbuf& operator=(basic_stringbuf&& __rhs); | 
|  | void swap(basic_stringbuf& __rhs) | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value || | 
|  | allocator_traits<allocator_type>::is_always_equal::value) | 
|  | #    endif | 
|  | ; | 
|  |  | 
|  | // [stringbuf.members] Member functions: | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | _LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const noexcept { return __str_.get_allocator(); } | 
|  | #    endif | 
|  |  | 
|  | #    if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY) | 
|  | string_type str() const; | 
|  | #    else | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() const& { return str(__str_.get_allocator()); } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() && { | 
|  | const basic_string_view<_CharT, _Traits> __view = view(); | 
|  | typename string_type::size_type __pos           = __view.empty() ? 0 : __view.data() - __str_.data(); | 
|  | // In C++23, this is just string_type(std::move(__str_), __pos, __view.size(), __str_.get_allocator()); | 
|  | // But we need something that works in C++20 also. | 
|  | string_type __result(std::move(__str_), __str_.get_allocator()); | 
|  | __result.resize(__pos + __view.size()); | 
|  | __result.erase(0, __pos); | 
|  | __init_buf_ptrs(); | 
|  | return __result; | 
|  | } | 
|  | #    endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY) | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | template <class _SAlloc> | 
|  | requires __is_allocator<_SAlloc>::value | 
|  | _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const { | 
|  | return basic_string<_CharT, _Traits, _SAlloc>(view(), __sa); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI basic_string_view<char_type, traits_type> view() const noexcept; | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | void str(const string_type& __s) { | 
|  | __str_ = __s; | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | template <class _SAlloc> | 
|  | requires(!is_same_v<_SAlloc, allocator_type>) | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const basic_string<char_type, traits_type, _SAlloc>& __s) { | 
|  | __str_ = __s; | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI void str(string_type&& __s) { | 
|  | __str_ = std::move(__s); | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const _Tp& __t) { | 
|  | basic_string_view<_CharT, _Traits> __sv = __t; | 
|  | __str_                                  = __sv; | 
|  | __init_buf_ptrs(); | 
|  | } | 
|  |  | 
|  | #    endif //  _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | protected: | 
|  | // [stringbuf.virtuals] Overridden virtual functions: | 
|  | int_type underflow() override; | 
|  | int_type pbackfail(int_type __c = traits_type::eof()) override; | 
|  | int_type overflow(int_type __c = traits_type::eof()) override; | 
|  | pos_type | 
|  | seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __wch = ios_base::in | ios_base::out) override; | 
|  | _LIBCPP_HIDE_FROM_ABI_VIRTUAL | 
|  | pos_type seekpos(pos_type __sp, ios_base::openmode __wch = ios_base::in | ios_base::out) override { | 
|  | return seekoff(__sp, ios_base::beg, __wch); | 
|  | } | 
|  | }; | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | _LIBCPP_HIDE_FROM_ABI void basic_stringbuf<_CharT, _Traits, _Allocator>::__move_init(basic_stringbuf&& __rhs) { | 
|  | char_type* __p   = const_cast<char_type*>(__rhs.__str_.data()); | 
|  | ptrdiff_t __binp = -1; | 
|  | ptrdiff_t __ninp = -1; | 
|  | ptrdiff_t __einp = -1; | 
|  | if (__rhs.eback() != nullptr) { | 
|  | __binp = __rhs.eback() - __p; | 
|  | __ninp = __rhs.gptr() - __p; | 
|  | __einp = __rhs.egptr() - __p; | 
|  | } | 
|  | ptrdiff_t __bout = -1; | 
|  | ptrdiff_t __nout = -1; | 
|  | ptrdiff_t __eout = -1; | 
|  | if (__rhs.pbase() != nullptr) { | 
|  | __bout = __rhs.pbase() - __p; | 
|  | __nout = __rhs.pptr() - __p; | 
|  | __eout = __rhs.epptr() - __p; | 
|  | } | 
|  | ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; | 
|  | __str_         = std::move(__rhs.__str_); | 
|  | __p            = const_cast<char_type*>(__str_.data()); | 
|  | if (__binp != -1) | 
|  | this->setg(__p + __binp, __p + __ninp, __p + __einp); | 
|  | if (__bout != -1) { | 
|  | this->setp(__p + __bout, __p + __eout); | 
|  | this->__pbump(__nout); | 
|  | } | 
|  | __hm_ = __hm == -1 ? nullptr : __p + __hm; | 
|  | __p   = const_cast<char_type*>(__rhs.__str_.data()); | 
|  | __rhs.setg(__p, __p, __p); | 
|  | __rhs.setp(__p, __p); | 
|  | __rhs.__hm_ = __p; | 
|  | this->pubimbue(__rhs.getloc()); | 
|  | } | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | basic_stringbuf<_CharT, _Traits, _Allocator>& | 
|  | basic_stringbuf<_CharT, _Traits, _Allocator>::operator=(basic_stringbuf&& __rhs) { | 
|  | char_type* __p   = const_cast<char_type*>(__rhs.__str_.data()); | 
|  | ptrdiff_t __binp = -1; | 
|  | ptrdiff_t __ninp = -1; | 
|  | ptrdiff_t __einp = -1; | 
|  | if (__rhs.eback() != nullptr) { | 
|  | __binp = __rhs.eback() - __p; | 
|  | __ninp = __rhs.gptr() - __p; | 
|  | __einp = __rhs.egptr() - __p; | 
|  | } | 
|  | ptrdiff_t __bout = -1; | 
|  | ptrdiff_t __nout = -1; | 
|  | ptrdiff_t __eout = -1; | 
|  | if (__rhs.pbase() != nullptr) { | 
|  | __bout = __rhs.pbase() - __p; | 
|  | __nout = __rhs.pptr() - __p; | 
|  | __eout = __rhs.epptr() - __p; | 
|  | } | 
|  | ptrdiff_t __hm = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; | 
|  | __str_         = std::move(__rhs.__str_); | 
|  | __p            = const_cast<char_type*>(__str_.data()); | 
|  | if (__binp != -1) | 
|  | this->setg(__p + __binp, __p + __ninp, __p + __einp); | 
|  | else | 
|  | this->setg(nullptr, nullptr, nullptr); | 
|  | if (__bout != -1) { | 
|  | this->setp(__p + __bout, __p + __eout); | 
|  | this->__pbump(__nout); | 
|  | } else | 
|  | this->setp(nullptr, nullptr); | 
|  |  | 
|  | __hm_   = __hm == -1 ? nullptr : __p + __hm; | 
|  | __mode_ = __rhs.__mode_; | 
|  | __p     = const_cast<char_type*>(__rhs.__str_.data()); | 
|  | __rhs.setg(__p, __p, __p); | 
|  | __rhs.setp(__p, __p); | 
|  | __rhs.__hm_ = __p; | 
|  | this->pubimbue(__rhs.getloc()); | 
|  | return *this; | 
|  | } | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | void basic_stringbuf<_CharT, _Traits, _Allocator>::swap(basic_stringbuf& __rhs) | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | noexcept(allocator_traits<_Allocator>::propagate_on_container_swap::value || | 
|  | allocator_traits<_Allocator>::is_always_equal::value) | 
|  | #    endif | 
|  | { | 
|  | char_type* __p    = const_cast<char_type*>(__rhs.__str_.data()); | 
|  | ptrdiff_t __rbinp = -1; | 
|  | ptrdiff_t __rninp = -1; | 
|  | ptrdiff_t __reinp = -1; | 
|  | if (__rhs.eback() != nullptr) { | 
|  | __rbinp = __rhs.eback() - __p; | 
|  | __rninp = __rhs.gptr() - __p; | 
|  | __reinp = __rhs.egptr() - __p; | 
|  | } | 
|  | ptrdiff_t __rbout = -1; | 
|  | ptrdiff_t __rnout = -1; | 
|  | ptrdiff_t __reout = -1; | 
|  | if (__rhs.pbase() != nullptr) { | 
|  | __rbout = __rhs.pbase() - __p; | 
|  | __rnout = __rhs.pptr() - __p; | 
|  | __reout = __rhs.epptr() - __p; | 
|  | } | 
|  | ptrdiff_t __rhm   = __rhs.__hm_ == nullptr ? -1 : __rhs.__hm_ - __p; | 
|  | __p               = const_cast<char_type*>(__str_.data()); | 
|  | ptrdiff_t __lbinp = -1; | 
|  | ptrdiff_t __lninp = -1; | 
|  | ptrdiff_t __leinp = -1; | 
|  | if (this->eback() != nullptr) { | 
|  | __lbinp = this->eback() - __p; | 
|  | __lninp = this->gptr() - __p; | 
|  | __leinp = this->egptr() - __p; | 
|  | } | 
|  | ptrdiff_t __lbout = -1; | 
|  | ptrdiff_t __lnout = -1; | 
|  | ptrdiff_t __leout = -1; | 
|  | if (this->pbase() != nullptr) { | 
|  | __lbout = this->pbase() - __p; | 
|  | __lnout = this->pptr() - __p; | 
|  | __leout = this->epptr() - __p; | 
|  | } | 
|  | ptrdiff_t __lhm = __hm_ == nullptr ? -1 : __hm_ - __p; | 
|  | std::swap(__mode_, __rhs.__mode_); | 
|  | __str_.swap(__rhs.__str_); | 
|  | __p = const_cast<char_type*>(__str_.data()); | 
|  | if (__rbinp != -1) | 
|  | this->setg(__p + __rbinp, __p + __rninp, __p + __reinp); | 
|  | else | 
|  | this->setg(nullptr, nullptr, nullptr); | 
|  | if (__rbout != -1) { | 
|  | this->setp(__p + __rbout, __p + __reout); | 
|  | this->__pbump(__rnout); | 
|  | } else | 
|  | this->setp(nullptr, nullptr); | 
|  | __hm_ = __rhm == -1 ? nullptr : __p + __rhm; | 
|  | __p   = const_cast<char_type*>(__rhs.__str_.data()); | 
|  | if (__lbinp != -1) | 
|  | __rhs.setg(__p + __lbinp, __p + __lninp, __p + __leinp); | 
|  | else | 
|  | __rhs.setg(nullptr, nullptr, nullptr); | 
|  | if (__lbout != -1) { | 
|  | __rhs.setp(__p + __lbout, __p + __leout); | 
|  | __rhs.__pbump(__lnout); | 
|  | } else | 
|  | __rhs.setp(nullptr, nullptr); | 
|  | __rhs.__hm_ = __lhm == -1 ? nullptr : __p + __lhm; | 
|  | locale __tl = __rhs.getloc(); | 
|  | __rhs.pubimbue(this->getloc()); | 
|  | this->pubimbue(__tl); | 
|  | } | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | inline _LIBCPP_HIDE_FROM_ABI void | 
|  | swap(basic_stringbuf<_CharT, _Traits, _Allocator>& __x, basic_stringbuf<_CharT, _Traits, _Allocator>& __y) | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | noexcept(noexcept(__x.swap(__y))) | 
|  | #    endif | 
|  | { | 
|  | __x.swap(__y); | 
|  | } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY) | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | basic_string<_CharT, _Traits, _Allocator> basic_stringbuf<_CharT, _Traits, _Allocator>::str() const { | 
|  | if (__mode_ & ios_base::out) { | 
|  | if (__hm_ < this->pptr()) | 
|  | __hm_ = this->pptr(); | 
|  | return string_type(this->pbase(), __hm_, __str_.get_allocator()); | 
|  | } else if (__mode_ & ios_base::in) | 
|  | return string_type(this->eback(), this->egptr(), __str_.get_allocator()); | 
|  | return string_type(__str_.get_allocator()); | 
|  | } | 
|  | #    endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY) | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | _LIBCPP_HIDE_FROM_ABI void basic_stringbuf<_CharT, _Traits, _Allocator>::__init_buf_ptrs() { | 
|  | __hm_                                = nullptr; | 
|  | char_type* __data                    = const_cast<char_type*>(__str_.data()); | 
|  | typename string_type::size_type __sz = __str_.size(); | 
|  | if (__mode_ & ios_base::in) { | 
|  | __hm_ = __data + __sz; | 
|  | this->setg(__data, __data, __hm_); | 
|  | } | 
|  | if (__mode_ & ios_base::out) { | 
|  | __hm_ = __data + __sz; | 
|  | __str_.resize(__str_.capacity()); | 
|  | this->setp(__data, __data + __str_.size()); | 
|  | if (__mode_ & (ios_base::app | ios_base::ate)) { | 
|  | while (__sz > INT_MAX) { | 
|  | this->pbump(INT_MAX); | 
|  | __sz -= INT_MAX; | 
|  | } | 
|  | if (__sz > 0) | 
|  | this->pbump(__sz); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_string_view<_CharT, _Traits> | 
|  | basic_stringbuf<_CharT, _Traits, _Allocator>::view() const noexcept { | 
|  | if (__mode_ & ios_base::out) { | 
|  | if (__hm_ < this->pptr()) | 
|  | __hm_ = this->pptr(); | 
|  | return basic_string_view<_CharT, _Traits>(this->pbase(), __hm_); | 
|  | } else if (__mode_ & ios_base::in) | 
|  | return basic_string_view<_CharT, _Traits>(this->eback(), this->egptr()); | 
|  | return basic_string_view<_CharT, _Traits>(); | 
|  | } | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type | 
|  | basic_stringbuf<_CharT, _Traits, _Allocator>::underflow() { | 
|  | if (__hm_ < this->pptr()) | 
|  | __hm_ = this->pptr(); | 
|  | if (__mode_ & ios_base::in) { | 
|  | if (this->egptr() < __hm_) | 
|  | this->setg(this->eback(), this->gptr(), __hm_); | 
|  | if (this->gptr() < this->egptr()) | 
|  | return traits_type::to_int_type(*this->gptr()); | 
|  | } | 
|  | return traits_type::eof(); | 
|  | } | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type | 
|  | basic_stringbuf<_CharT, _Traits, _Allocator>::pbackfail(int_type __c) { | 
|  | if (__hm_ < this->pptr()) | 
|  | __hm_ = this->pptr(); | 
|  | if (this->eback() < this->gptr()) { | 
|  | if (traits_type::eq_int_type(__c, traits_type::eof())) { | 
|  | this->setg(this->eback(), this->gptr() - 1, __hm_); | 
|  | return traits_type::not_eof(__c); | 
|  | } | 
|  | if ((__mode_ & ios_base::out) || traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) { | 
|  | this->setg(this->eback(), this->gptr() - 1, __hm_); | 
|  | *this->gptr() = traits_type::to_char_type(__c); | 
|  | return __c; | 
|  | } | 
|  | } | 
|  | return traits_type::eof(); | 
|  | } | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | typename basic_stringbuf<_CharT, _Traits, _Allocator>::int_type | 
|  | basic_stringbuf<_CharT, _Traits, _Allocator>::overflow(int_type __c) { | 
|  | if (!traits_type::eq_int_type(__c, traits_type::eof())) { | 
|  | ptrdiff_t __ninp = this->gptr() - this->eback(); | 
|  | if (this->pptr() == this->epptr()) { | 
|  | if (!(__mode_ & ios_base::out)) | 
|  | return traits_type::eof(); | 
|  | #    if _LIBCPP_HAS_EXCEPTIONS | 
|  | try { | 
|  | #    endif // _LIBCPP_HAS_EXCEPTIONS | 
|  | ptrdiff_t __nout = this->pptr() - this->pbase(); | 
|  | ptrdiff_t __hm   = __hm_ - this->pbase(); | 
|  | __str_.push_back(char_type()); | 
|  | __str_.resize(__str_.capacity()); | 
|  | char_type* __p = const_cast<char_type*>(__str_.data()); | 
|  | this->setp(__p, __p + __str_.size()); | 
|  | this->__pbump(__nout); | 
|  | __hm_ = this->pbase() + __hm; | 
|  | #    if _LIBCPP_HAS_EXCEPTIONS | 
|  | } catch (...) { | 
|  | return traits_type::eof(); | 
|  | } | 
|  | #    endif // _LIBCPP_HAS_EXCEPTIONS | 
|  | } | 
|  | __hm_ = std::max(this->pptr() + 1, __hm_); | 
|  | if (__mode_ & ios_base::in) { | 
|  | char_type* __p = const_cast<char_type*>(__str_.data()); | 
|  | this->setg(__p, __p + __ninp, __hm_); | 
|  | } | 
|  | return this->sputc(traits_type::to_char_type(__c)); | 
|  | } | 
|  | return traits_type::not_eof(__c); | 
|  | } | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | typename basic_stringbuf<_CharT, _Traits, _Allocator>::pos_type basic_stringbuf<_CharT, _Traits, _Allocator>::seekoff( | 
|  | off_type __off, ios_base::seekdir __way, ios_base::openmode __wch) { | 
|  | if (__hm_ < this->pptr()) | 
|  | __hm_ = this->pptr(); | 
|  | if ((__wch & (ios_base::in | ios_base::out)) == 0) | 
|  | return pos_type(-1); | 
|  | if ((__wch & (ios_base::in | ios_base::out)) == (ios_base::in | ios_base::out) && __way == ios_base::cur) | 
|  | return pos_type(-1); | 
|  | const ptrdiff_t __hm = __hm_ == nullptr ? 0 : __hm_ - __str_.data(); | 
|  | off_type __noff; | 
|  | switch (__way) { | 
|  | case ios_base::beg: | 
|  | __noff = 0; | 
|  | break; | 
|  | case ios_base::cur: | 
|  | if (__wch & ios_base::in) | 
|  | __noff = this->gptr() - this->eback(); | 
|  | else | 
|  | __noff = this->pptr() - this->pbase(); | 
|  | break; | 
|  | case ios_base::end: | 
|  | __noff = __hm; | 
|  | break; | 
|  | default: | 
|  | return pos_type(-1); | 
|  | } | 
|  | __noff += __off; | 
|  | if (__noff < 0 || __hm < __noff) | 
|  | return pos_type(-1); | 
|  | if (__noff != 0) { | 
|  | if ((__wch & ios_base::in) && this->gptr() == nullptr) | 
|  | return pos_type(-1); | 
|  | if ((__wch & ios_base::out) && this->pptr() == nullptr) | 
|  | return pos_type(-1); | 
|  | } | 
|  | if (__wch & ios_base::in) | 
|  | this->setg(this->eback(), this->eback() + __noff, __hm_); | 
|  | if (__wch & ios_base::out) { | 
|  | this->setp(this->pbase(), this->epptr()); | 
|  | this->__pbump(__noff); | 
|  | } | 
|  | return pos_type(__noff); | 
|  | } | 
|  |  | 
|  | // Class template basic_istringstream [istringstream] | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | class _LIBCPP_TEMPLATE_VIS basic_istringstream : public basic_istream<_CharT, _Traits> { | 
|  | public: | 
|  | typedef _CharT char_type; | 
|  | typedef _Traits traits_type; | 
|  | typedef typename traits_type::int_type int_type; | 
|  | typedef typename traits_type::pos_type pos_type; | 
|  | typedef typename traits_type::off_type off_type; | 
|  | typedef _Allocator allocator_type; | 
|  |  | 
|  | typedef basic_string<char_type, traits_type, allocator_type> string_type; | 
|  |  | 
|  | private: | 
|  | basic_stringbuf<char_type, traits_type, allocator_type> __sb_; | 
|  |  | 
|  | public: | 
|  | // [istringstream.cons] Constructors: | 
|  | _LIBCPP_HIDE_FROM_ABI basic_istringstream() | 
|  | : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(ios_base::in) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(ios_base::openmode __wch) | 
|  | : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch | ios_base::in) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(const string_type& __s, ios_base::openmode __wch = ios_base::in) | 
|  | : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::in) {} | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | _LIBCPP_HIDE_FROM_ABI basic_istringstream(ios_base::openmode __wch, const _Allocator& __a) | 
|  | : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch | ios_base::in, __a) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(string_type&& __s, ios_base::openmode __wch = ios_base::in) | 
|  | : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(std::move(__s), __wch | ios_base::in) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_istringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, const _Allocator& __a) | 
|  | : basic_istringstream(__s, ios_base::in, __a) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_istringstream( | 
|  | const basic_string<_CharT, _Traits, _SAlloc>& __s, ios_base::openmode __wch, const _Allocator& __a) | 
|  | : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::in, __a) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, | 
|  | ios_base::openmode __wch = ios_base::in) | 
|  | : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::in) {} | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_istringstream(const _Tp& __t, ios_base::openmode __which = ios_base::in) | 
|  | : basic_istringstream(__t, __which, _Allocator()) {} | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_istringstream(const _Tp& __t, const _Allocator& __a) | 
|  | : basic_istringstream(__t, ios_base::in, __a) {} | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_istringstream(const _Tp& __t, ios_base::openmode __which, const _Allocator& __a) | 
|  | : basic_istream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__t, __which | ios_base::in, __a) {} | 
|  |  | 
|  | #    endif //  _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | basic_istringstream(const basic_istringstream&) = delete; | 
|  | _LIBCPP_HIDE_FROM_ABI basic_istringstream(basic_istringstream&& __rhs) | 
|  | : basic_istream<_CharT, _Traits>(std::move(__rhs)), __sb_(std::move(__rhs.__sb_)) { | 
|  | basic_istream<_CharT, _Traits>::set_rdbuf(std::addressof(__sb_)); | 
|  | } | 
|  |  | 
|  | // [istringstream.assign] Assign and swap: | 
|  | basic_istringstream& operator=(const basic_istringstream&) = delete; | 
|  | basic_istringstream& operator=(basic_istringstream&& __rhs) { | 
|  | basic_istream<char_type, traits_type>::operator=(std::move(__rhs)); | 
|  | __sb_ = std::move(__rhs.__sb_); | 
|  | return *this; | 
|  | } | 
|  | _LIBCPP_HIDE_FROM_ABI void swap(basic_istringstream& __rhs) { | 
|  | basic_istream<char_type, traits_type>::swap(__rhs); | 
|  | __sb_.swap(__rhs.__sb_); | 
|  | } | 
|  |  | 
|  | // [istringstream.members] Member functions: | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { | 
|  | return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(std::addressof(__sb_)); | 
|  | } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY) | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() const { return __sb_.str(); } | 
|  | #    else | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() const& { return __sb_.str(); } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() && { return std::move(__sb_).str(); } | 
|  | #    endif | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | template <class _SAlloc> | 
|  | requires __is_allocator<_SAlloc>::value | 
|  | _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const { | 
|  | return __sb_.str(__sa); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI basic_string_view<char_type, traits_type> view() const noexcept { return __sb_.view(); } | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const string_type& __s) { __sb_.str(__s); } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const basic_string<char_type, traits_type, _SAlloc>& __s) { | 
|  | __sb_.str(__s); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI void str(string_type&& __s) { __sb_.str(std::move(__s)); } | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 26 | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const _Tp& __t) { | 
|  | rdbuf()->str(__t); | 
|  | } | 
|  | #    endif //  _LIBCPP_STD_VER >= 26 | 
|  | }; | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | inline _LIBCPP_HIDE_FROM_ABI void | 
|  | swap(basic_istringstream<_CharT, _Traits, _Allocator>& __x, basic_istringstream<_CharT, _Traits, _Allocator>& __y) { | 
|  | __x.swap(__y); | 
|  | } | 
|  |  | 
|  | // Class template basic_ostringstream [ostringstream] | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | class _LIBCPP_TEMPLATE_VIS basic_ostringstream : public basic_ostream<_CharT, _Traits> { | 
|  | public: | 
|  | typedef _CharT char_type; | 
|  | typedef _Traits traits_type; | 
|  | typedef typename traits_type::int_type int_type; | 
|  | typedef typename traits_type::pos_type pos_type; | 
|  | typedef typename traits_type::off_type off_type; | 
|  | typedef _Allocator allocator_type; | 
|  |  | 
|  | typedef basic_string<char_type, traits_type, allocator_type> string_type; | 
|  |  | 
|  | private: | 
|  | basic_stringbuf<char_type, traits_type, allocator_type> __sb_; | 
|  |  | 
|  | public: | 
|  | // [ostringstream.cons] Constructors: | 
|  | _LIBCPP_HIDE_FROM_ABI basic_ostringstream() | 
|  | : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(ios_base::out) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(ios_base::openmode __wch) | 
|  | : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch | ios_base::out) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(const string_type& __s, ios_base::openmode __wch = ios_base::out) | 
|  | : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::out) {} | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | _LIBCPP_HIDE_FROM_ABI basic_ostringstream(ios_base::openmode __wch, const _Allocator& __a) | 
|  | : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch | ios_base::out, __a) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(string_type&& __s, ios_base::openmode __wch = ios_base::out) | 
|  | : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(std::move(__s), __wch | ios_base::out) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_ostringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, const _Allocator& __a) | 
|  | : basic_ostringstream(__s, ios_base::out, __a) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_ostringstream( | 
|  | const basic_string<_CharT, _Traits, _SAlloc>& __s, ios_base::openmode __wch, const _Allocator& __a) | 
|  | : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::out, __a) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | requires(!is_same_v<_SAlloc, allocator_type>) | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, | 
|  | ios_base::openmode __wch = ios_base::out) | 
|  | : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch | ios_base::out) {} | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_ostringstream(const _Tp& __t, ios_base::openmode __which = ios_base::out) | 
|  | : basic_ostringstream(__t, __which | ios_base::out, _Allocator()) {} | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_ostringstream(const _Tp& __t, const _Allocator& __a) | 
|  | : basic_ostringstream(__t, ios_base::out, __a) {} | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_ostringstream(const _Tp& __t, ios_base::openmode __which, const _Allocator& __a) | 
|  | : basic_ostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__t, __which | ios_base::out, __a) {} | 
|  |  | 
|  | #    endif //  _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | basic_ostringstream(const basic_ostringstream&) = delete; | 
|  | _LIBCPP_HIDE_FROM_ABI basic_ostringstream(basic_ostringstream&& __rhs) | 
|  | : basic_ostream<_CharT, _Traits>(std::move(__rhs)), __sb_(std::move(__rhs.__sb_)) { | 
|  | basic_ostream<_CharT, _Traits>::set_rdbuf(std::addressof(__sb_)); | 
|  | } | 
|  |  | 
|  | // [ostringstream.assign] Assign and swap: | 
|  | basic_ostringstream& operator=(const basic_ostringstream&) = delete; | 
|  | basic_ostringstream& operator=(basic_ostringstream&& __rhs) { | 
|  | basic_ostream<char_type, traits_type>::operator=(std::move(__rhs)); | 
|  | __sb_ = std::move(__rhs.__sb_); | 
|  | return *this; | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI void swap(basic_ostringstream& __rhs) { | 
|  | basic_ostream<char_type, traits_type>::swap(__rhs); | 
|  | __sb_.swap(__rhs.__sb_); | 
|  | } | 
|  |  | 
|  | // [ostringstream.members] Member functions: | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { | 
|  | return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(std::addressof(__sb_)); | 
|  | } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY) | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() const { return __sb_.str(); } | 
|  | #    else | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() const& { return __sb_.str(); } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() && { return std::move(__sb_).str(); } | 
|  | #    endif | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | template <class _SAlloc> | 
|  | requires __is_allocator<_SAlloc>::value | 
|  | _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const { | 
|  | return __sb_.str(__sa); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI basic_string_view<char_type, traits_type> view() const noexcept { return __sb_.view(); } | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const string_type& __s) { __sb_.str(__s); } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const basic_string<char_type, traits_type, _SAlloc>& __s) { | 
|  | __sb_.str(__s); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI void str(string_type&& __s) { __sb_.str(std::move(__s)); } | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 26 | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const _Tp& __t) { | 
|  | rdbuf()->str(__t); | 
|  | } | 
|  | #    endif //  _LIBCPP_STD_VER >= 26 | 
|  | }; | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | inline _LIBCPP_HIDE_FROM_ABI void | 
|  | swap(basic_ostringstream<_CharT, _Traits, _Allocator>& __x, basic_ostringstream<_CharT, _Traits, _Allocator>& __y) { | 
|  | __x.swap(__y); | 
|  | } | 
|  |  | 
|  | // Class template basic_stringstream [stringstream] | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | class _LIBCPP_TEMPLATE_VIS basic_stringstream : public basic_iostream<_CharT, _Traits> { | 
|  | public: | 
|  | typedef _CharT char_type; | 
|  | typedef _Traits traits_type; | 
|  | typedef typename traits_type::int_type int_type; | 
|  | typedef typename traits_type::pos_type pos_type; | 
|  | typedef typename traits_type::off_type off_type; | 
|  | typedef _Allocator allocator_type; | 
|  |  | 
|  | typedef basic_string<char_type, traits_type, allocator_type> string_type; | 
|  |  | 
|  | private: | 
|  | basic_stringbuf<char_type, traits_type, allocator_type> __sb_; | 
|  |  | 
|  | public: | 
|  | // [stringstream.cons] constructors | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringstream() | 
|  | : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(ios_base::in | ios_base::out) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(ios_base::openmode __wch) | 
|  | : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(const string_type& __s, | 
|  | ios_base::openmode __wch = ios_base::in | ios_base::out) | 
|  | : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch) {} | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringstream(ios_base::openmode __wch, const _Allocator& __a) | 
|  | : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__wch, __a) {} | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(string_type&& __s, | 
|  | ios_base::openmode __wch = ios_base::out | ios_base::in) | 
|  | : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(std::move(__s), __wch) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, const _Allocator& __a) | 
|  | : basic_stringstream(__s, ios_base::out | ios_base::in, __a) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI | 
|  | basic_stringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, ios_base::openmode __wch, const _Allocator& __a) | 
|  | : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch, __a) {} | 
|  |  | 
|  | template <class _SAlloc> | 
|  | requires(!is_same_v<_SAlloc, allocator_type>) | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(const basic_string<_CharT, _Traits, _SAlloc>& __s, | 
|  | ios_base::openmode __wch = ios_base::out | ios_base::in) | 
|  | : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__s, __wch) {} | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI explicit basic_stringstream(const _Tp& __t, | 
|  | ios_base::openmode __which = ios_base::out | ios_base::in) | 
|  | : basic_stringstream(__t, __which, _Allocator()) {} | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringstream(const _Tp& __t, const _Allocator& __a) | 
|  | : basic_stringstream(__t, ios_base::out | ios_base::in, __a) {} | 
|  |  | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringstream(const _Tp& __t, ios_base::openmode __which, const _Allocator& __a) | 
|  | : basic_iostream<_CharT, _Traits>(std::addressof(__sb_)), __sb_(__t, __which, __a) {} | 
|  |  | 
|  | #    endif //  _LIBCPP_STD_VER >= 26 | 
|  |  | 
|  | basic_stringstream(const basic_stringstream&) = delete; | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringstream(basic_stringstream&& __rhs) | 
|  | : basic_iostream<_CharT, _Traits>(std::move(__rhs)), __sb_(std::move(__rhs.__sb_)) { | 
|  | basic_istream<_CharT, _Traits>::set_rdbuf(std::addressof(__sb_)); | 
|  | } | 
|  |  | 
|  | // [stringstream.assign] Assign and swap: | 
|  | basic_stringstream& operator=(const basic_stringstream&) = delete; | 
|  | basic_stringstream& operator=(basic_stringstream&& __rhs) { | 
|  | basic_iostream<char_type, traits_type>::operator=(std::move(__rhs)); | 
|  | __sb_ = std::move(__rhs.__sb_); | 
|  | return *this; | 
|  | } | 
|  | _LIBCPP_HIDE_FROM_ABI void swap(basic_stringstream& __rhs) { | 
|  | basic_iostream<char_type, traits_type>::swap(__rhs); | 
|  | __sb_.swap(__rhs.__sb_); | 
|  | } | 
|  |  | 
|  | // [stringstream.members] Member functions: | 
|  | _LIBCPP_HIDE_FROM_ABI basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const { | 
|  | return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(std::addressof(__sb_)); | 
|  | } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY) | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() const { return __sb_.str(); } | 
|  | #    else | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() const& { return __sb_.str(); } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI string_type str() && { return std::move(__sb_).str(); } | 
|  | #    endif | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | template <class _SAlloc> | 
|  | requires __is_allocator<_SAlloc>::value | 
|  | _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const { | 
|  | return __sb_.str(__sa); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI basic_string_view<char_type, traits_type> view() const noexcept { return __sb_.view(); } | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const string_type& __s) { __sb_.str(__s); } | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 20 | 
|  | template <class _SAlloc> | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const basic_string<char_type, traits_type, _SAlloc>& __s) { | 
|  | __sb_.str(__s); | 
|  | } | 
|  |  | 
|  | _LIBCPP_HIDE_FROM_ABI void str(string_type&& __s) { __sb_.str(std::move(__s)); } | 
|  | #    endif // _LIBCPP_STD_VER >= 20 | 
|  |  | 
|  | #    if _LIBCPP_STD_VER >= 26 | 
|  | template <class _Tp> | 
|  | requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>> | 
|  | _LIBCPP_HIDE_FROM_ABI void str(const _Tp& __t) { | 
|  | rdbuf()->str(__t); | 
|  | } | 
|  | #    endif //  _LIBCPP_STD_VER >= 26 | 
|  | }; | 
|  |  | 
|  | template <class _CharT, class _Traits, class _Allocator> | 
|  | inline _LIBCPP_HIDE_FROM_ABI void | 
|  | swap(basic_stringstream<_CharT, _Traits, _Allocator>& __x, basic_stringstream<_CharT, _Traits, _Allocator>& __y) { | 
|  | __x.swap(__y); | 
|  | } | 
|  |  | 
|  | #    if _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 | 
|  | extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringbuf<char>; | 
|  | extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_stringstream<char>; | 
|  | extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ostringstream<char>; | 
|  | extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istringstream<char>; | 
|  | #    endif | 
|  |  | 
|  | _LIBCPP_END_NAMESPACE_STD | 
|  |  | 
|  | _LIBCPP_POP_MACROS | 
|  |  | 
|  | #  endif // _LIBCPP_HAS_LOCALIZATION | 
|  |  | 
|  | #  if _LIBCPP_STD_VER <= 20 && !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) | 
|  | #    include <ostream> | 
|  | #    include <type_traits> | 
|  | #  endif | 
|  | #endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) | 
|  |  | 
|  | #endif // _LIBCPP_SSTREAM |