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llvm-project/libcxx/include/sstream
Louis Dionne 2ae52326da [libc++] Towards a simpler extern template story in libc++ 
The flexibility around extern template instantiation declarations in
libc++ result in a very complicated model, especially when support for
slightly different configurations (like the debug mode or assertions
in the dylib) are taken into account. That results in unexpected bugs
like http://llvm.org/PR50534 (and there have been multiple similar
bugs in the past, notably around the debug mode).

This patch gets rid of the _LIBCPP_DISABLE_EXTERN_TEMPLATE knob, which
I don't think is fundamental. Indeed, the motivation for that knob was to
avoid taking a dependency on the library, however that can be done better
by linking against the static library instead. And in fact, some parts of
the headers will always depend on things defined in the library, which
defeats the original goal of _LIBCPP_DISABLE_EXTERN_TEMPLATE.

Differential Revision: https://reviews.llvm.org/D103960
2022-06-08 22:05:07 -04:00

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// -*- 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
/*
sstream synopsis
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;
// 27.8.1.1 [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>& str,
ios_base::openmode which = ios_base::in | ios_base::out);
basic_stringbuf(basic_stringbuf&& rhs);
// 27.8.1.2 Assign and swap:
basic_stringbuf& operator=(basic_stringbuf&& rhs);
void swap(basic_stringbuf& rhs);
// 27.8.1.3 Get and set:
basic_string<char_type, traits_type, allocator_type> str() const;
void str(const basic_string<char_type, traits_type, allocator_type>& s);
protected:
// 27.8.1.4 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);
};
template <class charT, class traits, class Allocator>
void swap(basic_stringbuf<charT, traits, Allocator>& x,
basic_stringbuf<charT, traits, Allocator>& y);
typedef basic_stringbuf<char> stringbuf;
typedef basic_stringbuf<wchar_t> wstringbuf;
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;
// 27.8.2.1 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>& str,
ios_base::openmode which = ios_base::in);
basic_istringstream(basic_istringstream&& rhs);
// 27.8.2.2 Assign and swap:
basic_istringstream& operator=(basic_istringstream&& rhs);
void swap(basic_istringstream& rhs);
// 27.8.2.3 Members:
basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const;
basic_string<char_type, traits_type, allocator_type> str() const;
void str(const basic_string<char_type, traits_type, allocator_type>& s);
};
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;
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;
// 27.8.3.1 Constructors/destructor:
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>& str,
ios_base::openmode which = ios_base::out);
basic_ostringstream(basic_ostringstream&& rhs);
// 27.8.3.2 Assign/swap:
basic_ostringstream& operator=(basic_ostringstream&& rhs);
void swap(basic_ostringstream& rhs);
// 27.8.3.3 Members:
basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const;
basic_string<char_type, traits_type, allocator_type> str() const;
void str(const basic_string<char_type, traits_type, allocator_type>& s);
};
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;
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;
// constructors/destructor
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>& str,
ios_base::openmode which = ios_base::out|ios_base::in);
basic_stringstream(basic_stringstream&& rhs);
// 27.8.5.1 Assign/swap:
basic_stringstream& operator=(basic_stringstream&& rhs);
void swap(basic_stringstream& rhs);
// Members:
basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const;
basic_string<char_type, traits_type, allocator_type> str() const;
void str(const basic_string<char_type, traits_type, allocator_type>& str);
};
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
*/
#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>
#include <__utility/swap.h>
#include <istream>
#include <ostream>
#include <string>
#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
// basic_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_;
public:
// 30.8.2.1 [stringbuf.cons], constructors
_LIBCPP_INLINE_VISIBILITY
basic_stringbuf()
: __hm_(nullptr), __mode_(ios_base::in | ios_base::out) {}
_LIBCPP_INLINE_VISIBILITY
explicit basic_stringbuf(ios_base::openmode __wch)
: __hm_(nullptr), __mode_(__wch) {}
_LIBCPP_INLINE_VISIBILITY
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);
}
basic_stringbuf(basic_stringbuf&& __rhs);
// 27.8.1.2 Assign and swap:
basic_stringbuf& operator=(basic_stringbuf&& __rhs);
void swap(basic_stringbuf& __rhs);
// 27.8.1.3 Get and set:
string_type str() const;
void str(const string_type& __s);
protected:
// 27.8.1.4 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 pos_type seekoff(off_type __off, ios_base::seekdir __way,
ios_base::openmode __wch = ios_base::in | ios_base::out);
_LIBCPP_INLINE_VISIBILITY
virtual pos_type seekpos(pos_type __sp,
ios_base::openmode __wch = ios_base::in | ios_base::out) {
return seekoff(__sp, ios_base::beg, __wch);
}
};
template <class _CharT, class _Traits, class _Allocator>
basic_stringbuf<_CharT, _Traits, _Allocator>::basic_stringbuf(basic_stringbuf&& __rhs)
: __mode_(__rhs.__mode_)
{
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_ = _VSTD::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_ = _VSTD::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)
{
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;
_VSTD::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_INLINE_VISIBILITY
void
swap(basic_stringbuf<_CharT, _Traits, _Allocator>& __x,
basic_stringbuf<_CharT, _Traits, _Allocator>& __y)
{
__x.swap(__y);
}
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());
}
template <class _CharT, class _Traits, class _Allocator>
void
basic_stringbuf<_CharT, _Traits, _Allocator>::str(const string_type& __s)
{
__str_ = __s;
__hm_ = nullptr;
if (__mode_ & ios_base::in)
{
__hm_ = const_cast<char_type*>(__str_.data()) + __str_.size();
this->setg(const_cast<char_type*>(__str_.data()),
const_cast<char_type*>(__str_.data()),
__hm_);
}
if (__mode_ & ios_base::out)
{
typename string_type::size_type __sz = __str_.size();
__hm_ = const_cast<char_type*>(__str_.data()) + __sz;
__str_.resize(__str_.capacity());
this->setp(const_cast<char_type*>(__str_.data()),
const_cast<char_type*>(__str_.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);
}
}
}
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();
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_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;
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
return traits_type::eof();
}
#endif // _LIBCPP_NO_EXCEPTIONS
}
__hm_ = _VSTD::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);
}
// basic_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:
// 30.8.3.1 [istringstream.cons], constructors
_LIBCPP_INLINE_VISIBILITY
basic_istringstream()
: basic_istream<_CharT, _Traits>(&__sb_), __sb_(ios_base::in) {}
_LIBCPP_INLINE_VISIBILITY
explicit basic_istringstream(ios_base::openmode __wch)
: basic_istream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::in) {}
_LIBCPP_INLINE_VISIBILITY
explicit basic_istringstream(const string_type& __s,
ios_base::openmode __wch = ios_base::in)
: basic_istream<_CharT, _Traits>(&__sb_)
, __sb_(__s, __wch | ios_base::in)
{ }
_LIBCPP_INLINE_VISIBILITY
basic_istringstream(basic_istringstream&& __rhs)
: basic_istream<_CharT, _Traits>(_VSTD::move(__rhs))
, __sb_(_VSTD::move(__rhs.__sb_))
{
basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_);
}
// 27.8.2.2 Assign and swap:
basic_istringstream& operator=(basic_istringstream&& __rhs) {
basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs));
__sb_ = _VSTD::move(__rhs.__sb_);
return *this;
}
_LIBCPP_INLINE_VISIBILITY
void swap(basic_istringstream& __rhs) {
basic_istream<char_type, traits_type>::swap(__rhs);
__sb_.swap(__rhs.__sb_);
}
// 27.8.2.3 Members:
_LIBCPP_INLINE_VISIBILITY
basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const {
return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_);
}
_LIBCPP_INLINE_VISIBILITY
string_type str() const {
return __sb_.str();
}
_LIBCPP_INLINE_VISIBILITY
void str(const string_type& __s) {
__sb_.str(__s);
}
};
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(basic_istringstream<_CharT, _Traits, _Allocator>& __x,
basic_istringstream<_CharT, _Traits, _Allocator>& __y)
{
__x.swap(__y);
}
// basic_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:
// 30.8.4.1 [ostringstream.cons], constructors
_LIBCPP_INLINE_VISIBILITY
basic_ostringstream()
: basic_ostream<_CharT, _Traits>(&__sb_), __sb_(ios_base::out) {}
_LIBCPP_INLINE_VISIBILITY
explicit basic_ostringstream(ios_base::openmode __wch)
: basic_ostream<_CharT, _Traits>(&__sb_), __sb_(__wch | ios_base::out) {}
_LIBCPP_INLINE_VISIBILITY
explicit basic_ostringstream(const string_type& __s,
ios_base::openmode __wch = ios_base::out)
: basic_ostream<_CharT, _Traits>(&__sb_)
, __sb_(__s, __wch | ios_base::out)
{ }
_LIBCPP_INLINE_VISIBILITY
basic_ostringstream(basic_ostringstream&& __rhs)
: basic_ostream<_CharT, _Traits>(_VSTD::move(__rhs))
, __sb_(_VSTD::move(__rhs.__sb_))
{
basic_ostream<_CharT, _Traits>::set_rdbuf(&__sb_);
}
// 27.8.2.2 Assign and swap:
basic_ostringstream& operator=(basic_ostringstream&& __rhs) {
basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs));
__sb_ = _VSTD::move(__rhs.__sb_);
return *this;
}
_LIBCPP_INLINE_VISIBILITY
void swap(basic_ostringstream& __rhs) {
basic_ostream<char_type, traits_type>::swap(__rhs);
__sb_.swap(__rhs.__sb_);
}
// 27.8.2.3 Members:
_LIBCPP_INLINE_VISIBILITY
basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const {
return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_);
}
_LIBCPP_INLINE_VISIBILITY
string_type str() const {
return __sb_.str();
}
_LIBCPP_INLINE_VISIBILITY
void str(const string_type& __s) {
__sb_.str(__s);
}
};
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(basic_ostringstream<_CharT, _Traits, _Allocator>& __x,
basic_ostringstream<_CharT, _Traits, _Allocator>& __y)
{
__x.swap(__y);
}
// basic_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:
// 30.8.5.1 [stringstream.cons], constructors
_LIBCPP_INLINE_VISIBILITY
basic_stringstream()
: basic_iostream<_CharT, _Traits>(&__sb_), __sb_(ios_base::in | ios_base::out) {}
_LIBCPP_INLINE_VISIBILITY
explicit basic_stringstream(ios_base::openmode __wch)
: basic_iostream<_CharT, _Traits>(&__sb_), __sb_(__wch) {}
_LIBCPP_INLINE_VISIBILITY
explicit basic_stringstream(const string_type& __s,
ios_base::openmode __wch = ios_base::in | ios_base::out)
: basic_iostream<_CharT, _Traits>(&__sb_)
, __sb_(__s, __wch)
{ }
_LIBCPP_INLINE_VISIBILITY
basic_stringstream(basic_stringstream&& __rhs)
: basic_iostream<_CharT, _Traits>(_VSTD::move(__rhs))
, __sb_(_VSTD::move(__rhs.__sb_))
{
basic_istream<_CharT, _Traits>::set_rdbuf(&__sb_);
}
// 27.8.2.2 Assign and swap:
basic_stringstream& operator=(basic_stringstream&& __rhs) {
basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs));
__sb_ = _VSTD::move(__rhs.__sb_);
return *this;
}
_LIBCPP_INLINE_VISIBILITY
void swap(basic_stringstream& __rhs) {
basic_iostream<char_type, traits_type>::swap(__rhs);
__sb_.swap(__rhs.__sb_);
}
// 27.8.2.3 Members:
_LIBCPP_INLINE_VISIBILITY
basic_stringbuf<char_type, traits_type, allocator_type>* rdbuf() const {
return const_cast<basic_stringbuf<char_type, traits_type, allocator_type>*>(&__sb_);
}
_LIBCPP_INLINE_VISIBILITY
string_type str() const {
return __sb_.str();
}
_LIBCPP_INLINE_VISIBILITY
void str(const string_type& __s) {
__sb_.str(__s);
}
};
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(basic_stringstream<_CharT, _Traits, _Allocator>& __x,
basic_stringstream<_CharT, _Traits, _Allocator>& __y)
{
__x.swap(__y);
}
#if defined(_LIBCPP_ABI_ENABLE_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_SSTREAM
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