| // -*- 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 [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>& str, |
| ios_base::openmode which = ios_base::in | ios_base::out); |
| basic_stringbuf(basic_stringbuf&& rhs); |
| |
| // [stringbuf.assign] Assign and swap: |
| basic_stringbuf& operator=(basic_stringbuf&& rhs); |
| void swap(basic_stringbuf& rhs); |
| |
| // [stringbuf.members] Member functions: |
| basic_string<char_type, traits_type, allocator_type> str() const; |
| void str(const basic_string<char_type, traits_type, allocator_type>& s); |
| |
| 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); |
| |
| 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>& str, |
| ios_base::openmode which = ios_base::in); |
| basic_istringstream(basic_istringstream&& rhs); |
| |
| // [istringstream.assign] Assign and swap: |
| 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; |
| 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; |
| |
| // 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>& str, |
| ios_base::openmode which = ios_base::out); |
| basic_ostringstream(basic_ostringstream&& rhs); |
| |
| // [ostringstream.assign] Assign and swap: |
| 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; |
| 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; |
| |
| // 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>& str, |
| ios_base::openmode which = ios_base::out|ios_base::in); |
| basic_stringstream(basic_stringstream&& rhs); |
| |
| // [stringstream.assign] Assign and swap: |
| 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; |
| 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 |
| |
| // 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_; |
| |
| public: |
| // [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); |
| |
| // [stringbuf.assign] Assign and swap: |
| basic_stringbuf& operator=(basic_stringbuf&& __rhs); |
| void swap(basic_stringbuf& __rhs); |
| |
| // [stringbuf.members] Member functions: |
| string_type str() const; |
| void str(const string_type& __s); |
| |
| 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> |
| 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); |
| } |
| |
| // 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_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_); |
| } |
| |
| // [istringstream.assign] 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_); |
| } |
| |
| // [istringstream.members] Member functions: |
| _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); |
| } |
| |
| // 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_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_); |
| } |
| |
| // [ostringstream.assign] 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_); |
| } |
| |
| // [ostringstream.members] Member functions: |
| _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); |
| } |
| |
| // 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_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_); |
| } |
| |
| // [stringstream.assign] 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_); |
| } |
| |
| // [stringstream.members] Member functions: |
| _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 |
| |
| #if _LIBCPP_STD_VER <= 20 && !defined(_LIPCPP_REMOVE_TRANSITIVE_INCLUDES) |
| # include <type_traits> |
| #endif |
| |
| #endif // _LIBCPP_SSTREAM |
