// -*- C++ -*- //===--------------------------- istream ----------------------------------===// // // 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_ISTREAM #define _LIBCPP_ISTREAM /* istream synopsis template > class basic_istream : virtual public basic_ios { public: // types (inherited from basic_ios (27.5.4)): 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; // 27.7.1.1.1 Constructor/destructor: explicit basic_istream(basic_streambuf* sb); basic_istream(basic_istream&& rhs); virtual ~basic_istream(); // 27.7.1.1.2 Assign/swap: basic_istream& operator=(basic_istream&& rhs); void swap(basic_istream& rhs); // 27.7.1.1.3 Prefix/suffix: class sentry; // 27.7.1.2 Formatted input: basic_istream& operator>>(basic_istream& (*pf)(basic_istream&)); basic_istream& operator>>(basic_ios& (*pf)(basic_ios&)); basic_istream& operator>>(ios_base& (*pf)(ios_base&)); basic_istream& operator>>(basic_streambuf* sb); basic_istream& operator>>(bool& n); basic_istream& operator>>(short& n); basic_istream& operator>>(unsigned short& n); basic_istream& operator>>(int& n); basic_istream& operator>>(unsigned int& n); basic_istream& operator>>(long& n); basic_istream& operator>>(unsigned long& n); basic_istream& operator>>(long long& n); basic_istream& operator>>(unsigned long long& n); basic_istream& operator>>(float& f); basic_istream& operator>>(double& f); basic_istream& operator>>(long double& f); basic_istream& operator>>(void*& p); // 27.7.1.3 Unformatted input: streamsize gcount() const; int_type get(); basic_istream& get(char_type& c); basic_istream& get(char_type* s, streamsize n); basic_istream& get(char_type* s, streamsize n, char_type delim); basic_istream& get(basic_streambuf& sb); basic_istream& get(basic_streambuf& sb, char_type delim); basic_istream& getline(char_type* s, streamsize n); basic_istream& getline(char_type* s, streamsize n, char_type delim); basic_istream& ignore(streamsize n = 1, int_type delim = traits_type::eof()); int_type peek(); basic_istream& read (char_type* s, streamsize n); streamsize readsome(char_type* s, streamsize n); basic_istream& putback(char_type c); basic_istream& unget(); int sync(); pos_type tellg(); basic_istream& seekg(pos_type); basic_istream& seekg(off_type, ios_base::seekdir); protected: basic_istream(const basic_istream& rhs) = delete; basic_istream(basic_istream&& rhs); // 27.7.2.1.2 Assign/swap: basic_istream& operator=(const basic_istream& rhs) = delete; basic_istream& operator=(basic_istream&& rhs); void swap(basic_istream& rhs); }; // 27.7.1.2.3 character extraction templates: template basic_istream& operator>>(basic_istream&, charT&); template basic_istream& operator>>(basic_istream&, unsigned char&); template basic_istream& operator>>(basic_istream&, signed char&); template basic_istream& operator>>(basic_istream&, charT*); template basic_istream& operator>>(basic_istream&, unsigned char*); template basic_istream& operator>>(basic_istream&, signed char*); template void swap(basic_istream& x, basic_istream& y); typedef basic_istream istream; typedef basic_istream wistream; template > class basic_iostream : public basic_istream, public basic_ostream { 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; // constructor/destructor explicit basic_iostream(basic_streambuf* sb); basic_iostream(basic_iostream&& rhs); virtual ~basic_iostream(); // assign/swap basic_iostream& operator=(basic_iostream&& rhs); void swap(basic_iostream& rhs); }; template void swap(basic_iostream& x, basic_iostream& y); typedef basic_iostream iostream; typedef basic_iostream wiostream; template basic_istream& ws(basic_istream& is); // rvalue stream extraction template Stream&& operator>>(Stream&& is, T&& x); } // std */ #include <__config> #include #include #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) #pragma GCC system_header #endif _LIBCPP_PUSH_MACROS #include <__undef_macros> _LIBCPP_BEGIN_NAMESPACE_STD template class _LIBCPP_TEMPLATE_VIS basic_istream : virtual public basic_ios<_CharT, _Traits> { streamsize __gc_; public: // types (inherited from basic_ios (27.5.4)): 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; // 27.7.1.1.1 Constructor/destructor: inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 explicit basic_istream(basic_streambuf* __sb) : __gc_(0) { this->init(__sb); } virtual ~basic_istream(); protected: #ifndef _LIBCPP_CXX03_LANG inline _LIBCPP_INLINE_VISIBILITY basic_istream(basic_istream&& __rhs); // 27.7.1.1.2 Assign/swap: inline _LIBCPP_INLINE_VISIBILITY basic_istream& operator=(basic_istream&& __rhs); #endif inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 void swap(basic_istream& __rhs) { _VSTD::swap(__gc_, __rhs.__gc_); basic_ios::swap(__rhs); } #ifndef _LIBCPP_CXX03_LANG basic_istream (const basic_istream& __rhs) = delete; basic_istream& operator=(const basic_istream& __rhs) = delete; #endif public: // 27.7.1.1.3 Prefix/suffix: class _LIBCPP_TEMPLATE_VIS sentry; // 27.7.1.2 Formatted input: inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 basic_istream& operator>>(basic_istream& (*__pf)(basic_istream&)) { return __pf(*this); } inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 basic_istream& operator>>(basic_ios& (*__pf)(basic_ios&)) { __pf(*this); return *this; } inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 basic_istream& operator>>(ios_base& (*__pf)(ios_base&)) { __pf(*this); return *this; } basic_istream& operator>>(basic_streambuf* __sb); basic_istream& operator>>(bool& __n); basic_istream& operator>>(short& __n); basic_istream& operator>>(unsigned short& __n); basic_istream& operator>>(int& __n); basic_istream& operator>>(unsigned int& __n); basic_istream& operator>>(long& __n); basic_istream& operator>>(unsigned long& __n); basic_istream& operator>>(long long& __n); basic_istream& operator>>(unsigned long long& __n); basic_istream& operator>>(float& __f); basic_istream& operator>>(double& __f); basic_istream& operator>>(long double& __f); basic_istream& operator>>(void*& __p); // 27.7.1.3 Unformatted input: _LIBCPP_INLINE_VISIBILITY streamsize gcount() const {return __gc_;} int_type get(); inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 basic_istream& get(char_type& __c) { int_type __ch = get(); if (__ch != traits_type::eof()) __c = traits_type::to_char_type(__ch); return *this; } inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 basic_istream& get(char_type* __s, streamsize __n) { return get(__s, __n, this->widen('\n')); } basic_istream& get(char_type* __s, streamsize __n, char_type __dlm); inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 basic_istream& get(basic_streambuf& __sb) { return get(__sb, this->widen('\n')); } basic_istream& get(basic_streambuf& __sb, char_type __dlm); inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 basic_istream& getline(char_type* __s, streamsize __n) { return getline(__s, __n, this->widen('\n')); } basic_istream& getline(char_type* __s, streamsize __n, char_type __dlm); basic_istream& ignore(streamsize __n = 1, int_type __dlm = traits_type::eof()); int_type peek(); basic_istream& read (char_type* __s, streamsize __n); streamsize readsome(char_type* __s, streamsize __n); basic_istream& putback(char_type __c); basic_istream& unget(); int sync(); pos_type tellg(); basic_istream& seekg(pos_type __pos); basic_istream& seekg(off_type __off, ios_base::seekdir __dir); }; template class _LIBCPP_TEMPLATE_VIS basic_istream<_CharT, _Traits>::sentry { bool __ok_; sentry(const sentry&); // = delete; sentry& operator=(const sentry&); // = delete; public: explicit sentry(basic_istream<_CharT, _Traits>& __is, bool __noskipws = false); // ~sentry() = default; _LIBCPP_INLINE_VISIBILITY _LIBCPP_EXPLICIT operator bool() const {return __ok_;} }; template basic_istream<_CharT, _Traits>::sentry::sentry(basic_istream<_CharT, _Traits>& __is, bool __noskipws) : __ok_(false) { if (__is.good()) { if (__is.tie()) __is.tie()->flush(); if (!__noskipws && (__is.flags() & ios_base::skipws)) { typedef istreambuf_iterator<_CharT, _Traits> _Ip; const ctype<_CharT>& __ct = use_facet >(__is.getloc()); _Ip __i(__is); _Ip __eof; for (; __i != __eof; ++__i) if (!__ct.is(__ct.space, *__i)) break; if (__i == __eof) __is.setstate(ios_base::failbit | ios_base::eofbit); } __ok_ = __is.good(); } else __is.setstate(ios_base::failbit); } #ifndef _LIBCPP_CXX03_LANG template basic_istream<_CharT, _Traits>::basic_istream(basic_istream&& __rhs) : __gc_(__rhs.__gc_) { __rhs.__gc_ = 0; this->move(__rhs); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator=(basic_istream&& __rhs) { swap(__rhs); return *this; } #endif // _LIBCPP_CXX03_LANG template basic_istream<_CharT, _Traits>::~basic_istream() { } template _LIBCPP_INLINE_VISIBILITY basic_istream<_CharT, _Traits>& __input_arithmetic(basic_istream<_CharT, _Traits>& __is, _Tp& __n) { ios_base::iostate __state = ios_base::goodbit; typename basic_istream<_CharT, _Traits>::sentry __s(__is); if (__s) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS typedef istreambuf_iterator<_CharT, _Traits> _Ip; typedef num_get<_CharT, _Ip> _Fp; use_facet<_Fp>(__is.getloc()).get(_Ip(__is), _Ip(), __is, __state, __n); #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; __is.__setstate_nothrow(__state); if (__is.exceptions() & ios_base::badbit) { throw; } } #endif __is.setstate(__state); } return __is; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(unsigned short& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(unsigned int& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(long& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(unsigned long& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(long long& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(unsigned long long& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(float& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(double& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(long double& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(bool& __n) { return _VSTD::__input_arithmetic(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(void*& __n) { return _VSTD::__input_arithmetic(*this, __n); } template _LIBCPP_INLINE_VISIBILITY basic_istream<_CharT, _Traits>& __input_arithmetic_with_numeric_limits(basic_istream<_CharT, _Traits>& __is, _Tp& __n) { ios_base::iostate __state = ios_base::goodbit; typename basic_istream<_CharT, _Traits>::sentry __s(__is); if (__s) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS typedef istreambuf_iterator<_CharT, _Traits> _Ip; typedef num_get<_CharT, _Ip> _Fp; long __temp; use_facet<_Fp>(__is.getloc()).get(_Ip(__is), _Ip(), __is, __state, __temp); if (__temp < numeric_limits<_Tp>::min()) { __state |= ios_base::failbit; __n = numeric_limits<_Tp>::min(); } else if (__temp > numeric_limits<_Tp>::max()) { __state |= ios_base::failbit; __n = numeric_limits<_Tp>::max(); } else { __n = static_cast<_Tp>(__temp); } #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; __is.__setstate_nothrow(__state); if (__is.exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS __is.setstate(__state); } return __is; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(short& __n) { return _VSTD::__input_arithmetic_with_numeric_limits(*this, __n); } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(int& __n) { return _VSTD::__input_arithmetic_with_numeric_limits(*this, __n); } template _LIBCPP_INLINE_VISIBILITY basic_istream<_CharT, _Traits>& __input_c_string(basic_istream<_CharT, _Traits>& __is, _CharT* __p, size_t __n) { ios_base::iostate __state = ios_base::goodbit; typename basic_istream<_CharT, _Traits>::sentry __sen(__is); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif _CharT* __s = __p; const ctype<_CharT>& __ct = use_facet >(__is.getloc()); while (__s != __p + (__n-1)) { typename _Traits::int_type __i = __is.rdbuf()->sgetc(); if (_Traits::eq_int_type(__i, _Traits::eof())) { __state |= ios_base::eofbit; break; } _CharT __ch = _Traits::to_char_type(__i); if (__ct.is(__ct.space, __ch)) break; *__s++ = __ch; __is.rdbuf()->sbumpc(); } *__s = _CharT(); __is.width(0); if (__s == __p) __state |= ios_base::failbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; __is.__setstate_nothrow(__state); if (__is.exceptions() & ios_base::badbit) { throw; } } #endif __is.setstate(__state); } return __is; } #if _LIBCPP_STD_VER > 17 template inline _LIBCPP_INLINE_VISIBILITY basic_istream<_CharT, _Traits>& operator>>(basic_istream<_CharT, _Traits>& __is, _CharT (&__buf)[_Np]) { size_t __n = _Np; if (__is.width() > 0) __n = _VSTD::min(size_t(__is.width()), _Np); return _VSTD::__input_c_string(__is, __buf, __n); } template inline _LIBCPP_INLINE_VISIBILITY basic_istream& operator>>(basic_istream& __is, unsigned char (&__buf)[_Np]) { return __is >> (char(&)[_Np])__buf; } template inline _LIBCPP_INLINE_VISIBILITY basic_istream& operator>>(basic_istream& __is, signed char (&__buf)[_Np]) { return __is >> (char(&)[_Np])__buf; } #else template inline _LIBCPP_INLINE_VISIBILITY basic_istream<_CharT, _Traits>& operator>>(basic_istream<_CharT, _Traits>& __is, _CharT* __s) { streamsize __n = __is.width(); if (__n <= 0) __n = numeric_limits::max() / sizeof(_CharT) - 1; return _VSTD::__input_c_string(__is, __s, size_t(__n)); } template inline _LIBCPP_INLINE_VISIBILITY basic_istream& operator>>(basic_istream& __is, unsigned char* __s) { return __is >> (char*)__s; } template inline _LIBCPP_INLINE_VISIBILITY basic_istream& operator>>(basic_istream& __is, signed char* __s) { return __is >> (char*)__s; } #endif // _LIBCPP_STD_VER > 17 template basic_istream<_CharT, _Traits>& operator>>(basic_istream<_CharT, _Traits>& __is, _CharT& __c) { ios_base::iostate __state = ios_base::goodbit; typename basic_istream<_CharT, _Traits>::sentry __sen(__is); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif typename _Traits::int_type __i = __is.rdbuf()->sbumpc(); if (_Traits::eq_int_type(__i, _Traits::eof())) __state |= ios_base::eofbit | ios_base::failbit; else __c = _Traits::to_char_type(__i); #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; __is.__setstate_nothrow(__state); if (__is.exceptions() & ios_base::badbit) { throw; } } #endif __is.setstate(__state); } return __is; } template inline _LIBCPP_INLINE_VISIBILITY basic_istream& operator>>(basic_istream& __is, unsigned char& __c) { return __is >> (char&)__c; } template inline _LIBCPP_INLINE_VISIBILITY basic_istream& operator>>(basic_istream& __is, signed char& __c) { return __is >> (char&)__c; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::operator>>(basic_streambuf* __sb) { ios_base::iostate __state = ios_base::goodbit; __gc_ = 0; sentry __s(*this, true); if (__s) { if (__sb) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS while (true) { typename traits_type::int_type __i = this->rdbuf()->sgetc(); if (traits_type::eq_int_type(__i, _Traits::eof())) { __state |= ios_base::eofbit; break; } if (traits_type::eq_int_type( __sb->sputc(traits_type::to_char_type(__i)), traits_type::eof())) break; ++__gc_; this->rdbuf()->sbumpc(); } if (__gc_ == 0) __state |= ios_base::failbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; if (__gc_ == 0) __state |= ios_base::failbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::failbit || this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS } else { __state |= ios_base::failbit; } this->setstate(__state); } return *this; } template typename basic_istream<_CharT, _Traits>::int_type basic_istream<_CharT, _Traits>::get() { ios_base::iostate __state = ios_base::goodbit; __gc_ = 0; int_type __r = traits_type::eof(); sentry __s(*this, true); if (__s) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif __r = this->rdbuf()->sbumpc(); if (traits_type::eq_int_type(__r, traits_type::eof())) __state |= ios_base::failbit | ios_base::eofbit; else __gc_ = 1; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { this->__setstate_nothrow(this->rdstate() | ios_base::badbit); if (this->exceptions() & ios_base::badbit) { throw; } } #endif this->setstate(__state); } return __r; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::get(char_type* __s, streamsize __n, char_type __dlm) { ios_base::iostate __state = ios_base::goodbit; __gc_ = 0; sentry __sen(*this, true); if (__sen) { if (__n > 0) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif while (__gc_ < __n-1) { int_type __i = this->rdbuf()->sgetc(); if (traits_type::eq_int_type(__i, traits_type::eof())) { __state |= ios_base::eofbit; break; } char_type __ch = traits_type::to_char_type(__i); if (traits_type::eq(__ch, __dlm)) break; *__s++ = __ch; ++__gc_; this->rdbuf()->sbumpc(); } if (__gc_ == 0) __state |= ios_base::failbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { if (__n > 0) *__s = char_type(); throw; } } #endif } else { __state |= ios_base::failbit; } if (__n > 0) *__s = char_type(); this->setstate(__state); } if (__n > 0) *__s = char_type(); return *this; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::get(basic_streambuf& __sb, char_type __dlm) { ios_base::iostate __state = ios_base::goodbit; __gc_ = 0; sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS while (true) { typename traits_type::int_type __i = this->rdbuf()->sgetc(); if (traits_type::eq_int_type(__i, traits_type::eof())) { __state |= ios_base::eofbit; break; } char_type __ch = traits_type::to_char_type(__i); if (traits_type::eq(__ch, __dlm)) break; if (traits_type::eq_int_type(__sb.sputc(__ch), traits_type::eof())) break; ++__gc_; this->rdbuf()->sbumpc(); } #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; // according to the spec, exceptions here are caught but not rethrown } #endif // _LIBCPP_NO_EXCEPTIONS if (__gc_ == 0) __state |= ios_base::failbit; this->setstate(__state); } return *this; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::getline(char_type* __s, streamsize __n, char_type __dlm) { ios_base::iostate __state = ios_base::goodbit; __gc_ = 0; sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS while (true) { typename traits_type::int_type __i = this->rdbuf()->sgetc(); if (traits_type::eq_int_type(__i, traits_type::eof())) { __state |= ios_base::eofbit; break; } char_type __ch = traits_type::to_char_type(__i); if (traits_type::eq(__ch, __dlm)) { this->rdbuf()->sbumpc(); ++__gc_; break; } if (__gc_ >= __n-1) { __state |= ios_base::failbit; break; } *__s++ = __ch; this->rdbuf()->sbumpc(); ++__gc_; } #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { if (__n > 0) *__s = char_type(); if (__gc_ == 0) __state |= ios_base::failbit; throw; } } #endif // _LIBCPP_NO_EXCEPTIONS } if (__n > 0) *__s = char_type(); if (__gc_ == 0) __state |= ios_base::failbit; this->setstate(__state); return *this; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::ignore(streamsize __n, int_type __dlm) { ios_base::iostate __state = ios_base::goodbit; __gc_ = 0; sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS if (__n == numeric_limits::max()) { while (true) { typename traits_type::int_type __i = this->rdbuf()->sbumpc(); if (traits_type::eq_int_type(__i, traits_type::eof())) { __state |= ios_base::eofbit; break; } ++__gc_; if (traits_type::eq_int_type(__i, __dlm)) break; } } else { while (__gc_ < __n) { typename traits_type::int_type __i = this->rdbuf()->sbumpc(); if (traits_type::eq_int_type(__i, traits_type::eof())) { __state |= ios_base::eofbit; break; } ++__gc_; if (traits_type::eq_int_type(__i, __dlm)) break; } } #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS this->setstate(__state); } return *this; } template typename basic_istream<_CharT, _Traits>::int_type basic_istream<_CharT, _Traits>::peek() { ios_base::iostate __state = ios_base::goodbit; __gc_ = 0; int_type __r = traits_type::eof(); sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS __r = this->rdbuf()->sgetc(); if (traits_type::eq_int_type(__r, traits_type::eof())) __state |= ios_base::eofbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS this->setstate(__state); } return __r; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::read(char_type* __s, streamsize __n) { ios_base::iostate __state = ios_base::goodbit; __gc_ = 0; sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS __gc_ = this->rdbuf()->sgetn(__s, __n); if (__gc_ != __n) __state |= ios_base::failbit | ios_base::eofbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS } else { __state |= ios_base::failbit; } this->setstate(__state); return *this; } template streamsize basic_istream<_CharT, _Traits>::readsome(char_type* __s, streamsize __n) { ios_base::iostate __state = ios_base::goodbit; __gc_ = 0; sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS streamsize __c = this->rdbuf()->in_avail(); switch (__c) { case -1: __state |= ios_base::eofbit; break; case 0: break; default: __n = _VSTD::min(__c, __n); __gc_ = this->rdbuf()->sgetn(__s, __n); if (__gc_ != __n) __state |= ios_base::failbit | ios_base::eofbit; break; } #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS } else { __state |= ios_base::failbit; } this->setstate(__state); return __gc_; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::putback(char_type __c) { ios_base::iostate __state = this->rdstate() & ~ios_base::eofbit; __gc_ = 0; this->clear(__state); sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS if (this->rdbuf() == nullptr || this->rdbuf()->sputbackc(__c) == traits_type::eof()) __state |= ios_base::badbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS } else { __state |= ios_base::failbit; } this->setstate(__state); return *this; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::unget() { ios_base::iostate __state = this->rdstate() & ~ios_base::eofbit; __gc_ = 0; this->clear(__state); sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS if (this->rdbuf() == nullptr || this->rdbuf()->sungetc() == traits_type::eof()) __state |= ios_base::badbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS } else { __state |= ios_base::failbit; } this->setstate(__state); return *this; } template int basic_istream<_CharT, _Traits>::sync() { ios_base::iostate __state = ios_base::goodbit; int __r = 0; sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS if (this->rdbuf() == nullptr) return -1; if (this->rdbuf()->pubsync() == -1) { __state |= ios_base::badbit; return -1; } #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS this->setstate(__state); } return __r; } template typename basic_istream<_CharT, _Traits>::pos_type basic_istream<_CharT, _Traits>::tellg() { ios_base::iostate __state = ios_base::goodbit; pos_type __r(-1); sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS __r = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::in); #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS this->setstate(__state); } return __r; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::seekg(pos_type __pos) { ios_base::iostate __state = this->rdstate() & ~ios_base::eofbit; this->clear(__state); sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS if (this->rdbuf()->pubseekpos(__pos, ios_base::in) == pos_type(-1)) __state |= ios_base::failbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS this->setstate(__state); } return *this; } template basic_istream<_CharT, _Traits>& basic_istream<_CharT, _Traits>::seekg(off_type __off, ios_base::seekdir __dir) { ios_base::iostate __state = this->rdstate() & ~ios_base::eofbit; this->clear(__state); sentry __sen(*this, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS if (this->rdbuf()->pubseekoff(__off, __dir, ios_base::in) == pos_type(-1)) __state |= ios_base::failbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; this->__setstate_nothrow(__state); if (this->exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS this->setstate(__state); } return *this; } template basic_istream<_CharT, _Traits>& ws(basic_istream<_CharT, _Traits>& __is) { ios_base::iostate __state = ios_base::goodbit; typename basic_istream<_CharT, _Traits>::sentry __sen(__is, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif // _LIBCPP_NO_EXCEPTIONS const ctype<_CharT>& __ct = use_facet >(__is.getloc()); while (true) { typename _Traits::int_type __i = __is.rdbuf()->sgetc(); if (_Traits::eq_int_type(__i, _Traits::eof())) { __state |= ios_base::eofbit; break; } if (!__ct.is(__ct.space, _Traits::to_char_type(__i))) break; __is.rdbuf()->sbumpc(); } #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; __is.__setstate_nothrow(__state); if (__is.exceptions() & ios_base::badbit) { throw; } } #endif // _LIBCPP_NO_EXCEPTIONS __is.setstate(__state); } return __is; } #ifndef _LIBCPP_CXX03_LANG template struct __is_istreamable : false_type { }; template struct __is_istreamable<_Stream, _Tp, decltype( _VSTD::declval<_Stream>() >> _VSTD::declval<_Tp>(), void() )> : true_type { }; template , __is_istreamable<_Stream&, _Tp&&>>::value >::type> _LIBCPP_INLINE_VISIBILITY _Stream&& operator>>(_Stream&& __is, _Tp&& __x) { __is >> _VSTD::forward<_Tp>(__x); return _VSTD::move(__is); } #endif // _LIBCPP_CXX03_LANG template class _LIBCPP_TEMPLATE_VIS basic_iostream : public basic_istream<_CharT, _Traits>, 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; // constructor/destructor inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 explicit basic_iostream(basic_streambuf* __sb) : basic_istream<_CharT, _Traits>(__sb) {} virtual ~basic_iostream(); protected: #ifndef _LIBCPP_CXX03_LANG inline _LIBCPP_INLINE_VISIBILITY basic_iostream(basic_iostream&& __rhs); // assign/swap inline _LIBCPP_INLINE_VISIBILITY basic_iostream& operator=(basic_iostream&& __rhs); #endif inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1 void swap(basic_iostream& __rhs) { basic_istream::swap(__rhs); } }; #ifndef _LIBCPP_CXX03_LANG template basic_iostream<_CharT, _Traits>::basic_iostream(basic_iostream&& __rhs) : basic_istream<_CharT, _Traits>(_VSTD::move(__rhs)) { } template basic_iostream<_CharT, _Traits>& basic_iostream<_CharT, _Traits>::operator=(basic_iostream&& __rhs) { swap(__rhs); return *this; } #endif // _LIBCPP_CXX03_LANG template basic_iostream<_CharT, _Traits>::~basic_iostream() { } template basic_istream<_CharT, _Traits>& operator>>(basic_istream<_CharT, _Traits>& __is, basic_string<_CharT, _Traits, _Allocator>& __str) { ios_base::iostate __state = ios_base::goodbit; typename basic_istream<_CharT, _Traits>::sentry __sen(__is); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif __str.clear(); streamsize __n = __is.width(); if (__n <= 0) __n = __str.max_size(); if (__n <= 0) __n = numeric_limits::max(); streamsize __c = 0; const ctype<_CharT>& __ct = use_facet >(__is.getloc()); while (__c < __n) { typename _Traits::int_type __i = __is.rdbuf()->sgetc(); if (_Traits::eq_int_type(__i, _Traits::eof())) { __state |= ios_base::eofbit; break; } _CharT __ch = _Traits::to_char_type(__i); if (__ct.is(__ct.space, __ch)) break; __str.push_back(__ch); ++__c; __is.rdbuf()->sbumpc(); } __is.width(0); if (__c == 0) __state |= ios_base::failbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; __is.__setstate_nothrow(__state); if (__is.exceptions() & ios_base::badbit) { throw; } } #endif __is.setstate(__state); } return __is; } template basic_istream<_CharT, _Traits>& getline(basic_istream<_CharT, _Traits>& __is, basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm) { ios_base::iostate __state = ios_base::goodbit; typename basic_istream<_CharT, _Traits>::sentry __sen(__is, true); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif __str.clear(); streamsize __extr = 0; while (true) { typename _Traits::int_type __i = __is.rdbuf()->sbumpc(); if (_Traits::eq_int_type(__i, _Traits::eof())) { __state |= ios_base::eofbit; break; } ++__extr; _CharT __ch = _Traits::to_char_type(__i); if (_Traits::eq(__ch, __dlm)) break; __str.push_back(__ch); if (__str.size() == __str.max_size()) { __state |= ios_base::failbit; break; } } if (__extr == 0) __state |= ios_base::failbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; __is.__setstate_nothrow(__state); if (__is.exceptions() & ios_base::badbit) { throw; } } #endif __is.setstate(__state); } return __is; } template inline _LIBCPP_INLINE_VISIBILITY basic_istream<_CharT, _Traits>& getline(basic_istream<_CharT, _Traits>& __is, basic_string<_CharT, _Traits, _Allocator>& __str) { return getline(__is, __str, __is.widen('\n')); } #ifndef _LIBCPP_CXX03_LANG template inline _LIBCPP_INLINE_VISIBILITY basic_istream<_CharT, _Traits>& getline(basic_istream<_CharT, _Traits>&& __is, basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm) { return getline(__is, __str, __dlm); } template inline _LIBCPP_INLINE_VISIBILITY basic_istream<_CharT, _Traits>& getline(basic_istream<_CharT, _Traits>&& __is, basic_string<_CharT, _Traits, _Allocator>& __str) { return getline(__is, __str, __is.widen('\n')); } #endif // _LIBCPP_CXX03_LANG template basic_istream<_CharT, _Traits>& operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x) { ios_base::iostate __state = ios_base::goodbit; typename basic_istream<_CharT, _Traits>::sentry __sen(__is); if (__sen) { #ifndef _LIBCPP_NO_EXCEPTIONS try { #endif basic_string<_CharT, _Traits> __str; const ctype<_CharT>& __ct = use_facet >(__is.getloc()); size_t __c = 0; _CharT __zero = __ct.widen('0'); _CharT __one = __ct.widen('1'); while (__c < _Size) { typename _Traits::int_type __i = __is.rdbuf()->sgetc(); if (_Traits::eq_int_type(__i, _Traits::eof())) { __state |= ios_base::eofbit; break; } _CharT __ch = _Traits::to_char_type(__i); if (!_Traits::eq(__ch, __zero) && !_Traits::eq(__ch, __one)) break; __str.push_back(__ch); ++__c; __is.rdbuf()->sbumpc(); } __x = bitset<_Size>(__str); if (_Size > 0 && __c == 0) __state |= ios_base::failbit; #ifndef _LIBCPP_NO_EXCEPTIONS } catch (...) { __state |= ios_base::badbit; __is.__setstate_nothrow(__state); if (__is.exceptions() & ios_base::badbit) { throw; } } #endif __is.setstate(__state); } return __is; } _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istream) _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_istream) _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_iostream) _LIBCPP_END_NAMESPACE_STD _LIBCPP_POP_MACROS #endif // _LIBCPP_ISTREAM