Remove old code

Signed-off-by: Richard Qin <richard.qin.x@gmail.com>

1 files changed, 0 insertions, 1303 deletions

diff --git a/third_party/libcxx/include/c++/v1/sstream b/third_party/libcxx/include/c++/v1/sstream
deleted file mode 100644
index a42e8fb..0000000
--- a/third_party/libcxx/include/c++/v1/sstream
+++ /dev/null
@@ -1,1303 +0,0 @@
-// -*- 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 <streambuf>
-#    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 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
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const noexcept { return __str_.get_allocator(); }
-#    endif
-
-#    if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_BUILDING_LIBRARY)
-  [[__nodiscard__]] string_type str() const;
-#    else
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI string_type str() const& { return str(__str_.get_allocator()); }
-
-  [[nodiscard]] _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_v<_SAlloc>
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const {
-    return basic_string<_CharT, _Traits, _SAlloc>(view(), __sa);
-  }
-
-  [[nodiscard]] _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 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:
-  [[__nodiscard__]] _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)
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI string_type str() const { return __sb_.str(); }
-#    else
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI string_type str() const& { return __sb_.str(); }
-
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI string_type str() && { return std::move(__sb_).str(); }
-#    endif
-
-#    if _LIBCPP_STD_VER >= 20
-  template <class _SAlloc>
-    requires __is_allocator_v<_SAlloc>
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const {
-    return __sb_.str(__sa);
-  }
-
-  [[nodiscard]] _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 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:
-  [[__nodiscard__]] _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)
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI string_type str() const { return __sb_.str(); }
-#    else
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI string_type str() const& { return __sb_.str(); }
-
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI string_type str() && { return std::move(__sb_).str(); }
-#    endif
-
-#    if _LIBCPP_STD_VER >= 20
-  template <class _SAlloc>
-    requires __is_allocator_v<_SAlloc>
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const {
-    return __sb_.str(__sa);
-  }
-
-  [[nodiscard]] _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 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:
-  [[__nodiscard__]] _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)
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI string_type str() const { return __sb_.str(); }
-#    else
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI string_type str() const& { return __sb_.str(); }
-
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI string_type str() && { return std::move(__sb_).str(); }
-#    endif
-
-#    if _LIBCPP_STD_VER >= 20
-  template <class _SAlloc>
-    requires __is_allocator_v<_SAlloc>
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI basic_string<char_type, traits_type, _SAlloc> str(const _SAlloc& __sa) const {
-    return __sb_.str(__sa);
-  }
-
-  [[nodiscard]] _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