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// -*- C++ -*-
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//===--------------------------- istream ----------------------------------===//
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//
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//                     The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_ISTREAM
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#define _LIBCPP_ISTREAM
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/*
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    istream synopsis
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template <class charT, class traits = char_traits<charT> >
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class basic_istream
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    : virtual public basic_ios<charT,traits>
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{
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public:
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    // types (inherited from basic_ios (27.5.4)):
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    typedef charT                          char_type;
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    typedef traits                         traits_type;
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    typedef typename traits_type::int_type int_type;
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    typedef typename traits_type::pos_type pos_type;
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    typedef typename traits_type::off_type off_type;
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    // 27.7.1.1.1 Constructor/destructor:
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    explicit basic_istream(basic_streambuf<char_type, traits_type>* sb);
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    basic_istream(basic_istream&& rhs);
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    virtual ~basic_istream();
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    // 27.7.1.1.2 Assign/swap:
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    basic_istream& operator=(basic_istream&& rhs);
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    void swap(basic_istream& rhs);
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    // 27.7.1.1.3 Prefix/suffix:
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    class sentry;
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    // 27.7.1.2 Formatted input:
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    basic_istream& operator>>(basic_istream& (*pf)(basic_istream&));
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    basic_istream& operator>>(basic_ios<char_type, traits_type>&
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                              (*pf)(basic_ios<char_type, traits_type>&));
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    basic_istream& operator>>(ios_base& (*pf)(ios_base&));
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    basic_istream& operator>>(basic_streambuf<char_type, traits_type>* sb);
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    basic_istream& operator>>(bool& n);
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    basic_istream& operator>>(short& n);
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    basic_istream& operator>>(unsigned short& n);
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    basic_istream& operator>>(int& n);
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    basic_istream& operator>>(unsigned int& n);
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    basic_istream& operator>>(long& n);
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    basic_istream& operator>>(unsigned long& n);
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    basic_istream& operator>>(long long& n);
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    basic_istream& operator>>(unsigned long long& n);
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    basic_istream& operator>>(float& f);
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    basic_istream& operator>>(double& f);
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    basic_istream& operator>>(long double& f);
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    basic_istream& operator>>(void*& p);
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    // 27.7.1.3 Unformatted input:
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    streamsize gcount() const;
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    int_type get();
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    basic_istream& get(char_type& c);
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    basic_istream& get(char_type* s, streamsize n);
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    basic_istream& get(char_type* s, streamsize n, char_type delim);
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    basic_istream& get(basic_streambuf<char_type,traits_type>& sb);
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    basic_istream& get(basic_streambuf<char_type,traits_type>& sb, char_type delim);
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    basic_istream& getline(char_type* s, streamsize n);
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    basic_istream& getline(char_type* s, streamsize n, char_type delim);
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    basic_istream& ignore(streamsize n = 1, int_type delim = traits_type::eof());
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    int_type peek();
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    basic_istream& read (char_type* s, streamsize n);
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    streamsize readsome(char_type* s, streamsize n);
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    basic_istream& putback(char_type c);
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    basic_istream& unget();
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    int sync();
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    pos_type tellg();
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    basic_istream& seekg(pos_type);
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    basic_istream& seekg(off_type, ios_base::seekdir);
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protected:
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    basic_istream(const basic_istream& rhs) = delete;
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    basic_istream(basic_istream&& rhs);
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    // 27.7.2.1.2 Assign/swap:
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    basic_istream& operator=(const basic_istream& rhs) = delete;
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    basic_istream& operator=(basic_istream&& rhs);
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    void swap(basic_istream& rhs);
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};
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// 27.7.1.2.3 character extraction templates:
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template<class charT, class traits>
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  basic_istream<charT,traits>& operator>>(basic_istream<charT,traits>&, charT&);
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template<class traits>
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  basic_istream<char,traits>& operator>>(basic_istream<char,traits>&, unsigned char&);
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template<class traits>
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  basic_istream<char,traits>& operator>>(basic_istream<char,traits>&, signed char&);
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template<class charT, class traits>
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  basic_istream<charT,traits>& operator>>(basic_istream<charT,traits>&, charT*);
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template<class traits>
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  basic_istream<char,traits>& operator>>(basic_istream<char,traits>&, unsigned char*);
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template<class traits>
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  basic_istream<char,traits>& operator>>(basic_istream<char,traits>&, signed char*);
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template <class charT, class traits>
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  void
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  swap(basic_istream<charT, traits>& x, basic_istream<charT, traits>& y);
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typedef basic_istream<char> istream;
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typedef basic_istream<wchar_t> wistream;
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template <class charT, class traits = char_traits<charT> >
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class basic_iostream :
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    public basic_istream<charT,traits>,
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    public basic_ostream<charT,traits>
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{
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public:
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    // types:
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    typedef charT                          char_type;
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    typedef traits                         traits_type;
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    typedef typename traits_type::int_type int_type;
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    typedef typename traits_type::pos_type pos_type;
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    typedef typename traits_type::off_type off_type;
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    // constructor/destructor
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    explicit basic_iostream(basic_streambuf<char_type, traits_type>* sb);
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    basic_iostream(basic_iostream&& rhs);
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    virtual ~basic_iostream();
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    // assign/swap
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    basic_iostream& operator=(basic_iostream&& rhs);
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    void swap(basic_iostream& rhs);
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};
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template <class charT, class traits>
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  void
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  swap(basic_iostream<charT, traits>& x, basic_iostream<charT, traits>& y);
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typedef basic_iostream<char> iostream;
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typedef basic_iostream<wchar_t> wiostream;
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template <class charT, class traits>
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  basic_istream<charT,traits>&
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  ws(basic_istream<charT,traits>& is);
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template <class charT, class traits, class T>
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  basic_istream<charT, traits>&
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  operator>>(basic_istream<charT, traits>&& is, T& x);
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}  // std
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*/
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#include <__config>
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#include <ostream>
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#include <__undef_min_max>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _CharT, class _Traits>
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class _LIBCPP_TYPE_VIS_ONLY basic_istream
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    : virtual public basic_ios<_CharT, _Traits>
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{
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    streamsize __gc_;
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public:
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    // types (inherited from basic_ios (27.5.4)):
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    typedef _CharT                         char_type;
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    typedef _Traits                        traits_type;
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    typedef typename traits_type::int_type int_type;
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    typedef typename traits_type::pos_type pos_type;
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    typedef typename traits_type::off_type off_type;
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    // 27.7.1.1.1 Constructor/destructor:
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    explicit basic_istream(basic_streambuf<char_type, traits_type>* __sb);
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    virtual ~basic_istream();
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protected:
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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    _LIBCPP_INLINE_VISIBILITY
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    basic_istream(basic_istream&& __rhs);
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#endif
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    // 27.7.1.1.2 Assign/swap:
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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    _LIBCPP_INLINE_VISIBILITY
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    basic_istream& operator=(basic_istream&& __rhs);
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#endif
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    void swap(basic_istream& __rhs);
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#if _LIBCPP_STD_VER > 11
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#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS
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    basic_istream           (const basic_istream& __rhs) = delete;
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    basic_istream& operator=(const basic_istream& __rhs) = delete;
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#else
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    basic_istream           (const basic_istream& __rhs); // not defined
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    basic_istream& operator=(const basic_istream& __rhs); // not defined
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#endif
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#endif
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public:
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    // 27.7.1.1.3 Prefix/suffix:
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    class _LIBCPP_TYPE_VIS_ONLY sentry;
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    // 27.7.1.2 Formatted input:
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    basic_istream& operator>>(basic_istream& (*__pf)(basic_istream&));
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    basic_istream& operator>>(basic_ios<char_type, traits_type>&
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                              (*__pf)(basic_ios<char_type, traits_type>&));
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    basic_istream& operator>>(ios_base& (*__pf)(ios_base&));
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    basic_istream& operator>>(basic_streambuf<char_type, traits_type>* __sb);
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    basic_istream& operator>>(bool& __n);
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    basic_istream& operator>>(short& __n);
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    basic_istream& operator>>(unsigned short& __n);
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    basic_istream& operator>>(int& __n);
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    basic_istream& operator>>(unsigned int& __n);
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    basic_istream& operator>>(long& __n);
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    basic_istream& operator>>(unsigned long& __n);
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    basic_istream& operator>>(long long& __n);
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    basic_istream& operator>>(unsigned long long& __n);
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    basic_istream& operator>>(float& __f);
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    basic_istream& operator>>(double& __f);
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    basic_istream& operator>>(long double& __f);
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    basic_istream& operator>>(void*& __p);
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    // 27.7.1.3 Unformatted input:
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    _LIBCPP_INLINE_VISIBILITY
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    streamsize gcount() const {return __gc_;}
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    int_type get();
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    basic_istream& get(char_type& __c);
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    basic_istream& get(char_type* __s, streamsize __n);
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    basic_istream& get(char_type* __s, streamsize __n, char_type __dlm);
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    basic_istream& get(basic_streambuf<char_type, traits_type>& __sb);
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    basic_istream& get(basic_streambuf<char_type, traits_type>& __sb, char_type __dlm);
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    basic_istream& getline(char_type* __s, streamsize __n);
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    basic_istream& getline(char_type* __s, streamsize __n, char_type __dlm);
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248
    basic_istream& ignore(streamsize __n = 1, int_type __dlm = traits_type::eof());
249
    int_type peek();
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    basic_istream& read (char_type* __s, streamsize __n);
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    streamsize readsome(char_type* __s, streamsize __n);
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253
    basic_istream& putback(char_type __c);
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    basic_istream& unget();
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    int sync();
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257
    pos_type tellg();
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    basic_istream& seekg(pos_type __pos);
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    basic_istream& seekg(off_type __off, ios_base::seekdir __dir);
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};
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template <class _CharT, class _Traits>
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class _LIBCPP_TYPE_VIS_ONLY basic_istream<_CharT, _Traits>::sentry
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{
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    bool __ok_;
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    sentry(const sentry&); // = delete;
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    sentry& operator=(const sentry&); // = delete;
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270
public:
271
    explicit sentry(basic_istream<_CharT, _Traits>& __is, bool __noskipws = false);
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//    ~sentry() = default;
273
274
    _LIBCPP_INLINE_VISIBILITY
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        _LIBCPP_EXPLICIT
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        operator bool() const {return __ok_;}
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};
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template <class _CharT, class _Traits>
280
basic_istream<_CharT, _Traits>::sentry::sentry(basic_istream<_CharT, _Traits>& __is,
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                                               bool __noskipws)
282
    : __ok_(false)
283
{
284
    if (__is.good())
285
    {
286
        if (__is.tie())
287
            __is.tie()->flush();
288
        if (!__noskipws && (__is.flags() & ios_base::skipws))
289
        {
290
            typedef istreambuf_iterator<_CharT, _Traits> _Ip;
291
            const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc());
292
            _Ip __i(__is);
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            _Ip __eof;
294
            for (; __i != __eof; ++__i)
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                if (!__ct.is(__ct.space, *__i))
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                    break;
297
            if (__i == __eof)
298
                __is.setstate(ios_base::failbit | ios_base::eofbit);
299
        }
300
        __ok_ = __is.good();
301
    }
302
    else
303
        __is.setstate(ios_base::failbit);
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}
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template <class _CharT, class _Traits>
307
inline _LIBCPP_INLINE_VISIBILITY
308
basic_istream<_CharT, _Traits>::basic_istream(basic_streambuf<char_type, traits_type>* __sb)
309
    : __gc_(0)
310
{
311
    this->init(__sb);
312
}
313
314
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
315
316
template <class _CharT, class _Traits>
317
inline _LIBCPP_INLINE_VISIBILITY
318
basic_istream<_CharT, _Traits>::basic_istream(basic_istream&& __rhs)
319
    : __gc_(__rhs.__gc_)
320
{
321
    __rhs.__gc_ = 0;
322
    this->move(__rhs);
323
}
324
325
template <class _CharT, class _Traits>
326
inline _LIBCPP_INLINE_VISIBILITY
327
basic_istream<_CharT, _Traits>&
328
basic_istream<_CharT, _Traits>::operator=(basic_istream&& __rhs)
329
{
330
    swap(__rhs);
331
    return *this;
332
}
333
334
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
335
336
template <class _CharT, class _Traits>
337
basic_istream<_CharT, _Traits>::~basic_istream()
338
{
339
}
340
341
template <class _CharT, class _Traits>
342
inline _LIBCPP_INLINE_VISIBILITY
343
void
344
basic_istream<_CharT, _Traits>::swap(basic_istream& __rhs)
345
{
346
    _VSTD::swap(__gc_, __rhs.__gc_);
347
    basic_ios<char_type, traits_type>::swap(__rhs);
348
}
349
350
template <class _CharT, class _Traits>
351
basic_istream<_CharT, _Traits>&
352
basic_istream<_CharT, _Traits>::operator>>(unsigned short& __n)
353
{
354
#ifndef _LIBCPP_NO_EXCEPTIONS
355
    try
356
    {
357
#endif  // _LIBCPP_NO_EXCEPTIONS
358
        sentry __s(*this);
359
        if (__s)
360
        {
361
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
362
            typedef num_get<char_type, _Ip> _Fp;
363
            ios_base::iostate __err = ios_base::goodbit;
364
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
365
            this->setstate(__err);
366
        }
367
#ifndef _LIBCPP_NO_EXCEPTIONS
368
    }
369
    catch (...)
370
    {
371
        this->__set_badbit_and_consider_rethrow();
372
    }
373
#endif  // _LIBCPP_NO_EXCEPTIONS
374
    return *this;
375
}
376
377
template <class _CharT, class _Traits>
378
basic_istream<_CharT, _Traits>&
379
basic_istream<_CharT, _Traits>::operator>>(unsigned int& __n)
380
{
381
#ifndef _LIBCPP_NO_EXCEPTIONS
382
    try
383
    {
384
#endif  // _LIBCPP_NO_EXCEPTIONS
385
        sentry __s(*this);
386
        if (__s)
387
        {
388
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
389
            typedef num_get<char_type, _Ip> _Fp;
390
            ios_base::iostate __err = ios_base::goodbit;
391
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
392
            this->setstate(__err);
393
        }
394
#ifndef _LIBCPP_NO_EXCEPTIONS
395
    }
396
    catch (...)
397
    {
398
        this->__set_badbit_and_consider_rethrow();
399
    }
400
#endif  // _LIBCPP_NO_EXCEPTIONS
401
    return *this;
402
}
403
404
template <class _CharT, class _Traits>
405
basic_istream<_CharT, _Traits>&
406
basic_istream<_CharT, _Traits>::operator>>(long& __n)
407
{
408
#ifndef _LIBCPP_NO_EXCEPTIONS
409
    try
410
    {
411
#endif  // _LIBCPP_NO_EXCEPTIONS
412
        sentry __s(*this);
413
        if (__s)
414
        {
415
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
416
            typedef num_get<char_type, _Ip> _Fp;
417
            ios_base::iostate __err = ios_base::goodbit;
418
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
419
            this->setstate(__err);
420
        }
421
#ifndef _LIBCPP_NO_EXCEPTIONS
422
    }
423
    catch (...)
424
    {
425
        this->__set_badbit_and_consider_rethrow();
426
    }
427
#endif  // _LIBCPP_NO_EXCEPTIONS
428
    return *this;
429
}
430
431
template <class _CharT, class _Traits>
432
basic_istream<_CharT, _Traits>&
433
basic_istream<_CharT, _Traits>::operator>>(unsigned long& __n)
434
{
435
#ifndef _LIBCPP_NO_EXCEPTIONS
436
    try
437
    {
438
#endif  // _LIBCPP_NO_EXCEPTIONS
439
        sentry __s(*this);
440
        if (__s)
441
        {
442
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
443
            typedef num_get<char_type, _Ip> _Fp;
444
            ios_base::iostate __err = ios_base::goodbit;
445
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
446
            this->setstate(__err);
447
        }
448
#ifndef _LIBCPP_NO_EXCEPTIONS
449
    }
450
    catch (...)
451
    {
452
        this->__set_badbit_and_consider_rethrow();
453
    }
454
#endif  // _LIBCPP_NO_EXCEPTIONS
455
    return *this;
456
}
457
458
template <class _CharT, class _Traits>
459
basic_istream<_CharT, _Traits>&
460
basic_istream<_CharT, _Traits>::operator>>(long long& __n)
461
{
462
#ifndef _LIBCPP_NO_EXCEPTIONS
463
    try
464
    {
465
#endif  // _LIBCPP_NO_EXCEPTIONS
466
        sentry __s(*this);
467
        if (__s)
468
        {
469
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
470
            typedef num_get<char_type, _Ip> _Fp;
471
            ios_base::iostate __err = ios_base::goodbit;
472
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
473
            this->setstate(__err);
474
        }
475
#ifndef _LIBCPP_NO_EXCEPTIONS
476
    }
477
    catch (...)
478
    {
479
        this->__set_badbit_and_consider_rethrow();
480
    }
481
#endif  // _LIBCPP_NO_EXCEPTIONS
482
    return *this;
483
}
484
485
template <class _CharT, class _Traits>
486
basic_istream<_CharT, _Traits>&
487
basic_istream<_CharT, _Traits>::operator>>(unsigned long long& __n)
488
{
489
#ifndef _LIBCPP_NO_EXCEPTIONS
490
    try
491
    {
492
#endif  // _LIBCPP_NO_EXCEPTIONS
493
        sentry __s(*this);
494
        if (__s)
495
        {
496
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
497
            typedef num_get<char_type, _Ip> _Fp;
498
            ios_base::iostate __err = ios_base::goodbit;
499
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
500
            this->setstate(__err);
501
        }
502
#ifndef _LIBCPP_NO_EXCEPTIONS
503
    }
504
    catch (...)
505
    {
506
        this->__set_badbit_and_consider_rethrow();
507
    }
508
#endif  // _LIBCPP_NO_EXCEPTIONS
509
    return *this;
510
}
511
512
template <class _CharT, class _Traits>
513
basic_istream<_CharT, _Traits>&
514
basic_istream<_CharT, _Traits>::operator>>(float& __n)
515
{
516
#ifndef _LIBCPP_NO_EXCEPTIONS
517
    try
518
    {
519
#endif  // _LIBCPP_NO_EXCEPTIONS
520
        sentry __s(*this);
521
        if (__s)
522
        {
523
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
524
            typedef num_get<char_type, _Ip> _Fp;
525
            ios_base::iostate __err = ios_base::goodbit;
526
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
527
            this->setstate(__err);
528
        }
529
#ifndef _LIBCPP_NO_EXCEPTIONS
530
    }
531
    catch (...)
532
    {
533
        this->__set_badbit_and_consider_rethrow();
534
    }
535
#endif  // _LIBCPP_NO_EXCEPTIONS
536
    return *this;
537
}
538
539
template <class _CharT, class _Traits>
540
basic_istream<_CharT, _Traits>&
541
basic_istream<_CharT, _Traits>::operator>>(double& __n)
542
{
543
#ifndef _LIBCPP_NO_EXCEPTIONS
544
    try
545
    {
546
#endif  // _LIBCPP_NO_EXCEPTIONS
547
        sentry __s(*this);
548
        if (__s)
549
        {
550
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
551
            typedef num_get<char_type, _Ip> _Fp;
552
            ios_base::iostate __err = ios_base::goodbit;
553
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
554
            this->setstate(__err);
555
        }
556
#ifndef _LIBCPP_NO_EXCEPTIONS
557
    }
558
    catch (...)
559
    {
560
        this->__set_badbit_and_consider_rethrow();
561
    }
562
#endif  // _LIBCPP_NO_EXCEPTIONS
563
    return *this;
564
}
565
566
template <class _CharT, class _Traits>
567
basic_istream<_CharT, _Traits>&
568
basic_istream<_CharT, _Traits>::operator>>(long double& __n)
569
{
570
#ifndef _LIBCPP_NO_EXCEPTIONS
571
    try
572
    {
573
#endif  // _LIBCPP_NO_EXCEPTIONS
574
        sentry __s(*this);
575
        if (__s)
576
        {
577
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
578
            typedef num_get<char_type, _Ip> _Fp;
579
            ios_base::iostate __err = ios_base::goodbit;
580
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
581
            this->setstate(__err);
582
        }
583
#ifndef _LIBCPP_NO_EXCEPTIONS
584
    }
585
    catch (...)
586
    {
587
        this->__set_badbit_and_consider_rethrow();
588
    }
589
#endif  // _LIBCPP_NO_EXCEPTIONS
590
    return *this;
591
}
592
593
template <class _CharT, class _Traits>
594
basic_istream<_CharT, _Traits>&
595
basic_istream<_CharT, _Traits>::operator>>(bool& __n)
596
{
597
#ifndef _LIBCPP_NO_EXCEPTIONS
598
    try
599
    {
600
#endif  // _LIBCPP_NO_EXCEPTIONS
601
        sentry __s(*this);
602
        if (__s)
603
        {
604
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
605
            typedef num_get<char_type, _Ip> _Fp;
606
            ios_base::iostate __err = ios_base::goodbit;
607
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
608
            this->setstate(__err);
609
        }
610
#ifndef _LIBCPP_NO_EXCEPTIONS
611
    }
612
    catch (...)
613
    {
614
        this->__set_badbit_and_consider_rethrow();
615
    }
616
#endif  // _LIBCPP_NO_EXCEPTIONS
617
    return *this;
618
}
619
620
template <class _CharT, class _Traits>
621
basic_istream<_CharT, _Traits>&
622
basic_istream<_CharT, _Traits>::operator>>(void*& __n)
623
{
624
#ifndef _LIBCPP_NO_EXCEPTIONS
625
    try
626
    {
627
#endif  // _LIBCPP_NO_EXCEPTIONS
628
        sentry __s(*this);
629
        if (__s)
630
        {
631
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
632
            typedef num_get<char_type, _Ip> _Fp;
633
            ios_base::iostate __err = ios_base::goodbit;
634
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __n);
635
            this->setstate(__err);
636
        }
637
#ifndef _LIBCPP_NO_EXCEPTIONS
638
    }
639
    catch (...)
640
    {
641
        this->__set_badbit_and_consider_rethrow();
642
    }
643
#endif  // _LIBCPP_NO_EXCEPTIONS
644
    return *this;
645
}
646
647
template <class _CharT, class _Traits>
648
basic_istream<_CharT, _Traits>&
649
basic_istream<_CharT, _Traits>::operator>>(short& __n)
650
{
651
#ifndef _LIBCPP_NO_EXCEPTIONS
652
    try
653
    {
654
#endif  // _LIBCPP_NO_EXCEPTIONS
655
        sentry __s(*this);
656
        if (__s)
657
        {
658
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
659
            typedef num_get<char_type, _Ip> _Fp;
660
            ios_base::iostate __err = ios_base::goodbit;
661
            long __temp;
662
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __temp);
663
            if (__temp < numeric_limits<short>::min())
664
            {
665
                __err |= ios_base::failbit;
666
                __n = numeric_limits<short>::min();
667
            }
668
            else if (__temp > numeric_limits<short>::max())
669
            {
670
                __err |= ios_base::failbit;
671
                __n = numeric_limits<short>::max();
672
            }
673
            else
674
                __n = static_cast<short>(__temp);
675
            this->setstate(__err);
676
        }
677
#ifndef _LIBCPP_NO_EXCEPTIONS
678
    }
679
    catch (...)
680
    {
681
        this->__set_badbit_and_consider_rethrow();
682
    }
683
#endif  // _LIBCPP_NO_EXCEPTIONS
684
    return *this;
685
}
686
687
template <class _CharT, class _Traits>
688
basic_istream<_CharT, _Traits>&
689
basic_istream<_CharT, _Traits>::operator>>(int& __n)
690
{
691
#ifndef _LIBCPP_NO_EXCEPTIONS
692
    try
693
    {
694
#endif  // _LIBCPP_NO_EXCEPTIONS
695
        sentry __s(*this);
696
        if (__s)
697
        {
698
            typedef istreambuf_iterator<char_type, traits_type> _Ip;
699
            typedef num_get<char_type, _Ip> _Fp;
700
            ios_base::iostate __err = ios_base::goodbit;
701
            long __temp;
702
            use_facet<_Fp>(this->getloc()).get(_Ip(*this), _Ip(), *this, __err, __temp);
703
            if (__temp < numeric_limits<int>::min())
704
            {
705
                __err |= ios_base::failbit;
706
                __n = numeric_limits<int>::min();
707
            }
708
            else if (__temp > numeric_limits<int>::max())
709
            {
710
                __err |= ios_base::failbit;
711
                __n = numeric_limits<int>::max();
712
            }
713
            else
714
                __n = static_cast<int>(__temp);
715
            this->setstate(__err);
716
        }
717
#ifndef _LIBCPP_NO_EXCEPTIONS
718
    }
719
    catch (...)
720
    {
721
        this->__set_badbit_and_consider_rethrow();
722
    }
723
#endif  // _LIBCPP_NO_EXCEPTIONS
724
    return *this;
725
}
726
727
template <class _CharT, class _Traits>
728
inline _LIBCPP_INLINE_VISIBILITY
729
basic_istream<_CharT, _Traits>&
730
basic_istream<_CharT, _Traits>::operator>>(basic_istream& (*__pf)(basic_istream&))
731
{
732
    return __pf(*this);
733
}
734
735
template <class _CharT, class _Traits>
736
inline _LIBCPP_INLINE_VISIBILITY
737
basic_istream<_CharT, _Traits>&
738
basic_istream<_CharT, _Traits>::operator>>(basic_ios<char_type, traits_type>&
739
                                           (*__pf)(basic_ios<char_type, traits_type>&))
740
{
741
    __pf(*this);
742
    return *this;
743
}
744
745
template <class _CharT, class _Traits>
746
inline _LIBCPP_INLINE_VISIBILITY
747
basic_istream<_CharT, _Traits>&
748
basic_istream<_CharT, _Traits>::operator>>(ios_base& (*__pf)(ios_base&))
749
{
750
    __pf(*this);
751
    return *this;
752
}
753
754
template<class _CharT, class _Traits>
755
basic_istream<_CharT, _Traits>&
756
operator>>(basic_istream<_CharT, _Traits>& __is, _CharT* __s)
757
{
758
#ifndef _LIBCPP_NO_EXCEPTIONS
759
    try
760
    {
761
#endif  // _LIBCPP_NO_EXCEPTIONS
762
        typename basic_istream<_CharT, _Traits>::sentry __sen(__is);
763
        if (__sen)
764
        {
765
            streamsize __n = __is.width();
766
            if (__n <= 0)
767
                __n = numeric_limits<streamsize>::max() / sizeof(_CharT) - 1;
768
            streamsize __c = 0;
769
            const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc());
770
            ios_base::iostate __err = ios_base::goodbit;
771
            while (__c < __n-1)
772
            {
773
                typename _Traits::int_type __i = __is.rdbuf()->sgetc();
774
                if (_Traits::eq_int_type(__i, _Traits::eof()))
775
                {
776
                   __err |= ios_base::eofbit;
777
                   break;
778
                }
779
                _CharT __ch = _Traits::to_char_type(__i);
780
                if (__ct.is(__ct.space, __ch))
781
                    break;
782
                *__s++ = __ch;
783
                ++__c;
784
                 __is.rdbuf()->sbumpc();
785
            }
786
            *__s = _CharT();
787
            __is.width(0);
788
            if (__c == 0)
789
               __err |= ios_base::failbit;
790
            __is.setstate(__err);
791
        }
792
#ifndef _LIBCPP_NO_EXCEPTIONS
793
    }
794
    catch (...)
795
    {
796
        __is.__set_badbit_and_consider_rethrow();
797
    }
798
#endif  // _LIBCPP_NO_EXCEPTIONS
799
    return __is;
800
}
801
802
template<class _Traits>
803
inline _LIBCPP_INLINE_VISIBILITY
804
basic_istream<char, _Traits>&
805
operator>>(basic_istream<char, _Traits>& __is, unsigned char* __s)
806
{
807
    return __is >> (char*)__s;
808
}
809
810
template<class _Traits>
811
inline _LIBCPP_INLINE_VISIBILITY
812
basic_istream<char, _Traits>&
813
operator>>(basic_istream<char, _Traits>& __is, signed char* __s)
814
{
815
    return __is >> (char*)__s;
816
}
817
818
template<class _CharT, class _Traits>
819
basic_istream<_CharT, _Traits>&
820
operator>>(basic_istream<_CharT, _Traits>& __is, _CharT& __c)
821
{
822
#ifndef _LIBCPP_NO_EXCEPTIONS
823
    try
824
    {
825
#endif  // _LIBCPP_NO_EXCEPTIONS
826
        typename basic_istream<_CharT, _Traits>::sentry __sen(__is);
827
        if (__sen)
828
        {
829
            typename _Traits::int_type __i = __is.rdbuf()->sbumpc();
830
            if (_Traits::eq_int_type(__i, _Traits::eof()))
831
                __is.setstate(ios_base::eofbit | ios_base::failbit);
832
            else
833
                __c = _Traits::to_char_type(__i);
834
        }
835
#ifndef _LIBCPP_NO_EXCEPTIONS
836
    }
837
    catch (...)
838
    {
839
        __is.__set_badbit_and_consider_rethrow();
840
    }
841
#endif  // _LIBCPP_NO_EXCEPTIONS
842
    return __is;
843
}
844
845
template<class _Traits>
846
inline _LIBCPP_INLINE_VISIBILITY
847
basic_istream<char, _Traits>&
848
operator>>(basic_istream<char, _Traits>& __is, unsigned char& __c)
849
{
850
    return __is >> (char&)__c;
851
}
852
853
template<class _Traits>
854
inline _LIBCPP_INLINE_VISIBILITY
855
basic_istream<char, _Traits>&
856
operator>>(basic_istream<char, _Traits>& __is, signed char& __c)
857
{
858
    return __is >> (char&)__c;
859
}
860
861
template<class _CharT, class _Traits>
862
basic_istream<_CharT, _Traits>&
863
basic_istream<_CharT, _Traits>::operator>>(basic_streambuf<char_type, traits_type>* __sb)
864
{
865
    __gc_ = 0;
866
#ifndef _LIBCPP_NO_EXCEPTIONS
867
    try
868
    {
869
#endif  // _LIBCPP_NO_EXCEPTIONS
870
        sentry __s(*this, true);
871
        if (__s)
872
        {
873
            if (__sb)
874
            {
875
#ifndef _LIBCPP_NO_EXCEPTIONS
876
                try
877
                {
878
#endif  // _LIBCPP_NO_EXCEPTIONS
879
                    ios_base::iostate __err = ios_base::goodbit;
880
                    while (true)
881
                    {
882
                        typename traits_type::int_type __i = this->rdbuf()->sgetc();
883
                        if (traits_type::eq_int_type(__i, _Traits::eof()))
884
                        {
885
                           __err |= ios_base::eofbit;
886
                           break;
887
                        }
888
                        if (traits_type::eq_int_type(
889
                                __sb->sputc(traits_type::to_char_type(__i)),
890
                                traits_type::eof()))
891
                            break;
892
                        ++__gc_;
893
                        this->rdbuf()->sbumpc();
894
                    }
895
                    if (__gc_ == 0)
896
                       __err |= ios_base::failbit;
897
                    this->setstate(__err);
898
#ifndef _LIBCPP_NO_EXCEPTIONS
899
                }
900
                catch (...)
901
                {
902
                    if (__gc_ == 0)
903
                        this->__set_failbit_and_consider_rethrow();
904
                }
905
#endif  // _LIBCPP_NO_EXCEPTIONS
906
            }
907
            else
908
                this->setstate(ios_base::failbit);
909
        }
910
#ifndef _LIBCPP_NO_EXCEPTIONS
911
    }
912
    catch (...)
913
    {
914
        this->__set_badbit_and_consider_rethrow();
915
    }
916
#endif  // _LIBCPP_NO_EXCEPTIONS
917
    return *this;
918
}
919
920
template<class _CharT, class _Traits>
921
typename basic_istream<_CharT, _Traits>::int_type
922
basic_istream<_CharT, _Traits>::get()
923
{
924
    __gc_ = 0;
925
    int_type __r = traits_type::eof();
926
#ifndef _LIBCPP_NO_EXCEPTIONS
927
    try
928
    {
929
#endif  // _LIBCPP_NO_EXCEPTIONS
930
        sentry __s(*this, true);
931
        if (__s)
932
        {
933
            __r = this->rdbuf()->sbumpc();
934
            if (traits_type::eq_int_type(__r, traits_type::eof()))
935
               this->setstate(ios_base::failbit | ios_base::eofbit);
936
            else
937
                __gc_ = 1;
938
        }
939
#ifndef _LIBCPP_NO_EXCEPTIONS
940
    }
941
    catch (...)
942
    {
943
        this->__set_badbit_and_consider_rethrow();
944
    }
945
#endif  // _LIBCPP_NO_EXCEPTIONS
946
    return __r;
947
}
948
949
template<class _CharT, class _Traits>
950
inline _LIBCPP_INLINE_VISIBILITY
951
basic_istream<_CharT, _Traits>&
952
basic_istream<_CharT, _Traits>::get(char_type& __c)
953
{
954
    int_type __ch = get();
955
    if (__ch != traits_type::eof())
956
        __c = traits_type::to_char_type(__ch);
957
    return *this;
958
}
959
960
template<class _CharT, class _Traits>
961
basic_istream<_CharT, _Traits>&
962
basic_istream<_CharT, _Traits>::get(char_type* __s, streamsize __n, char_type __dlm)
963
{
964
    __gc_ = 0;
965
#ifndef _LIBCPP_NO_EXCEPTIONS
966
    try
967
    {
968
#endif  // _LIBCPP_NO_EXCEPTIONS
969
        sentry __sen(*this, true);
970
        if (__sen)
971
        {
972
            if (__n > 0)
973
            {
974
                ios_base::iostate __err = ios_base::goodbit;
975
                while (__gc_ < __n-1)
976
                {
977
                    int_type __i = this->rdbuf()->sgetc();
978
                    if (traits_type::eq_int_type(__i, traits_type::eof()))
979
                    {
980
                       __err |= ios_base::eofbit;
981
                       break;
982
                    }
983
                    char_type __ch = traits_type::to_char_type(__i);
984
                    if (traits_type::eq(__ch, __dlm))
985
                        break;
986
                    *__s++ = __ch;
987
                    ++__gc_;
988
                     this->rdbuf()->sbumpc();
989
                }
990
                *__s = char_type();
991
                if (__gc_ == 0)
992
                   __err |= ios_base::failbit;
993
                this->setstate(__err);
994
            }
995
            else
996
                this->setstate(ios_base::failbit);
997
        }
998
#ifndef _LIBCPP_NO_EXCEPTIONS
999
    }
1000
    catch (...)
1001
    {
1002
        this->__set_badbit_and_consider_rethrow();
1003
    }
1004
#endif  // _LIBCPP_NO_EXCEPTIONS
1005
    return *this;
1006
}
1007
1008
template<class _CharT, class _Traits>
1009
inline _LIBCPP_INLINE_VISIBILITY
1010
basic_istream<_CharT, _Traits>&
1011
basic_istream<_CharT, _Traits>::get(char_type* __s, streamsize __n)
1012
{
1013
    return get(__s, __n, this->widen('\n'));
1014
}
1015
1016
template<class _CharT, class _Traits>
1017
basic_istream<_CharT, _Traits>&
1018
basic_istream<_CharT, _Traits>::get(basic_streambuf<char_type, traits_type>& __sb,
1019
                                    char_type __dlm)
1020
{
1021
    __gc_ = 0;
1022
#ifndef _LIBCPP_NO_EXCEPTIONS
1023
    try
1024
    {
1025
#endif  // _LIBCPP_NO_EXCEPTIONS
1026
        sentry __sen(*this, true);
1027
        if (__sen)
1028
        {
1029
            ios_base::iostate __err = ios_base::goodbit;
1030
#ifndef _LIBCPP_NO_EXCEPTIONS
1031
            try
1032
            {
1033
#endif  // _LIBCPP_NO_EXCEPTIONS
1034
                while (true)
1035
                {
1036
                    typename traits_type::int_type __i = this->rdbuf()->sgetc();
1037
                    if (traits_type::eq_int_type(__i, traits_type::eof()))
1038
                    {
1039
                       __err |= ios_base::eofbit;
1040
                       break;
1041
                    }
1042
                    char_type __ch = traits_type::to_char_type(__i);
1043
                    if (traits_type::eq(__ch, __dlm))
1044
                        break;
1045
                    if (traits_type::eq_int_type(__sb.sputc(__ch), traits_type::eof()))
1046
                        break;
1047
                    ++__gc_;
1048
                    this->rdbuf()->sbumpc();
1049
                }
1050
#ifndef _LIBCPP_NO_EXCEPTIONS
1051
            }
1052
            catch (...)
1053
            {
1054
            }
1055
#endif  // _LIBCPP_NO_EXCEPTIONS
1056
            if (__gc_ == 0)
1057
               __err |= ios_base::failbit;
1058
            this->setstate(__err);
1059
        }
1060
#ifndef _LIBCPP_NO_EXCEPTIONS
1061
    }
1062
    catch (...)
1063
    {
1064
        this->__set_badbit_and_consider_rethrow();
1065
    }
1066
#endif  // _LIBCPP_NO_EXCEPTIONS
1067
    return *this;
1068
}
1069
1070
template<class _CharT, class _Traits>
1071
inline _LIBCPP_INLINE_VISIBILITY
1072
basic_istream<_CharT, _Traits>&
1073
basic_istream<_CharT, _Traits>::get(basic_streambuf<char_type, traits_type>& __sb)
1074
{
1075
    return get(__sb, this->widen('\n'));
1076
}
1077
1078
template<class _CharT, class _Traits>
1079
basic_istream<_CharT, _Traits>&
1080
basic_istream<_CharT, _Traits>::getline(char_type* __s, streamsize __n, char_type __dlm)
1081
{
1082
    __gc_ = 0;
1083
#ifndef _LIBCPP_NO_EXCEPTIONS
1084
    try
1085
    {
1086
#endif  // _LIBCPP_NO_EXCEPTIONS
1087
        sentry __sen(*this, true);
1088
        if (__sen)
1089
        {
1090
            ios_base::iostate __err = ios_base::goodbit;
1091
            while (true)
1092
            {
1093
                typename traits_type::int_type __i = this->rdbuf()->sgetc();
1094
                if (traits_type::eq_int_type(__i, traits_type::eof()))
1095
                {
1096
                   __err |= ios_base::eofbit;
1097
                   break;
1098
                }
1099
                char_type __ch = traits_type::to_char_type(__i);
1100
                if (traits_type::eq(__ch, __dlm))
1101
                {
1102
                    this->rdbuf()->sbumpc();
1103
                    ++__gc_;
1104
                    break;
1105
                }
1106
                if (__gc_ >= __n-1)
1107
                {
1108
                    __err |= ios_base::failbit;
1109
                    break;
1110
                }
1111
                *__s++ = __ch;
1112
                this->rdbuf()->sbumpc();
1113
                ++__gc_;
1114
            }
1115
            if (__n > 0)
1116
                *__s = char_type();
1117
            if (__gc_ == 0)
1118
               __err |= ios_base::failbit;
1119
            this->setstate(__err);
1120
        }
1121
#ifndef _LIBCPP_NO_EXCEPTIONS
1122
    }
1123
    catch (...)
1124
    {
1125
        this->__set_badbit_and_consider_rethrow();
1126
    }
1127
#endif  // _LIBCPP_NO_EXCEPTIONS
1128
    return *this;
1129
}
1130
1131
template<class _CharT, class _Traits>
1132
inline _LIBCPP_INLINE_VISIBILITY
1133
basic_istream<_CharT, _Traits>&
1134
basic_istream<_CharT, _Traits>::getline(char_type* __s, streamsize __n)
1135
{
1136
    return getline(__s, __n, this->widen('\n'));
1137
}
1138
1139
template<class _CharT, class _Traits>
1140
basic_istream<_CharT, _Traits>&
1141
basic_istream<_CharT, _Traits>::ignore(streamsize __n, int_type __dlm)
1142
{
1143
    __gc_ = 0;
1144
#ifndef _LIBCPP_NO_EXCEPTIONS
1145
    try
1146
    {
1147
#endif  // _LIBCPP_NO_EXCEPTIONS
1148
        sentry __sen(*this, true);
1149
        if (__sen)
1150
        {
1151
            ios_base::iostate __err = ios_base::goodbit;
1152
            if (__n == numeric_limits<streamsize>::max())
1153
            {
1154
                while (true)
1155
                {
1156
                    typename traits_type::int_type __i = this->rdbuf()->sbumpc();
1157
                    if (traits_type::eq_int_type(__i, traits_type::eof()))
1158
                    {
1159
                       __err |= ios_base::eofbit;
1160
                       break;
1161
                    }
1162
                    ++__gc_;
1163
                    if (traits_type::eq_int_type(__i, __dlm))
1164
                        break;
1165
                }
1166
            }
1167
            else
1168
            {
1169
                while (__gc_ < __n)
1170
                {
1171
                    typename traits_type::int_type __i = this->rdbuf()->sbumpc();
1172
                    if (traits_type::eq_int_type(__i, traits_type::eof()))
1173
                    {
1174
                       __err |= ios_base::eofbit;
1175
                       break;
1176
                    }
1177
                    ++__gc_;
1178
                    if (traits_type::eq_int_type(__i, __dlm))
1179
                        break;
1180
                }
1181
            }
1182
            this->setstate(__err);
1183
        }
1184
#ifndef _LIBCPP_NO_EXCEPTIONS
1185
    }
1186
    catch (...)
1187
    {
1188
        this->__set_badbit_and_consider_rethrow();
1189
    }
1190
#endif  // _LIBCPP_NO_EXCEPTIONS
1191
    return *this;
1192
}
1193
1194
template<class _CharT, class _Traits>
1195
typename basic_istream<_CharT, _Traits>::int_type
1196
basic_istream<_CharT, _Traits>::peek()
1197
{
1198
    __gc_ = 0;
1199
    int_type __r = traits_type::eof();
1200
#ifndef _LIBCPP_NO_EXCEPTIONS
1201
    try
1202
    {
1203
#endif  // _LIBCPP_NO_EXCEPTIONS
1204
        sentry __sen(*this, true);
1205
        if (__sen)
1206
        {
1207
            __r = this->rdbuf()->sgetc();
1208
            if (traits_type::eq_int_type(__r, traits_type::eof()))
1209
                this->setstate(ios_base::eofbit);
1210
        }
1211
#ifndef _LIBCPP_NO_EXCEPTIONS
1212
    }
1213
    catch (...)
1214
    {
1215
        this->__set_badbit_and_consider_rethrow();
1216
    }
1217
#endif  // _LIBCPP_NO_EXCEPTIONS
1218
    return __r;
1219
}
1220
1221
template<class _CharT, class _Traits>
1222
basic_istream<_CharT, _Traits>&
1223
basic_istream<_CharT, _Traits>::read(char_type* __s, streamsize __n)
1224
{
1225
    __gc_ = 0;
1226
#ifndef _LIBCPP_NO_EXCEPTIONS
1227
    try
1228
    {
1229
#endif  // _LIBCPP_NO_EXCEPTIONS
1230
        sentry __sen(*this, true);
1231
        if (__sen)
1232
        {
1233
            __gc_ = this->rdbuf()->sgetn(__s, __n);
1234
            if (__gc_ != __n)
1235
                this->setstate(ios_base::failbit | ios_base::eofbit);
1236
        }
1237
        else
1238
            this->setstate(ios_base::failbit);
1239
#ifndef _LIBCPP_NO_EXCEPTIONS
1240
    }
1241
    catch (...)
1242
    {
1243
        this->__set_badbit_and_consider_rethrow();
1244
    }
1245
#endif  // _LIBCPP_NO_EXCEPTIONS
1246
    return *this;
1247
}
1248
1249
template<class _CharT, class _Traits>
1250
streamsize
1251
basic_istream<_CharT, _Traits>::readsome(char_type* __s, streamsize __n)
1252
{
1253
    __gc_ = 0;
1254
    streamsize __c = this->rdbuf()->in_avail();
1255
    switch (__c)
1256
    {
1257
    case -1:
1258
        this->setstate(ios_base::eofbit);
1259
        break;
1260
    case 0:
1261
        break;
1262
    default:
1263
        read(__s, _VSTD::min(__c, __n));
1264
        break;
1265
    }
1266
    return __gc_;
1267
}
1268
1269
template<class _CharT, class _Traits>
1270
basic_istream<_CharT, _Traits>&
1271
basic_istream<_CharT, _Traits>::putback(char_type __c)
1272
{
1273
    __gc_ = 0;
1274
#ifndef _LIBCPP_NO_EXCEPTIONS
1275
    try
1276
    {
1277
#endif  // _LIBCPP_NO_EXCEPTIONS
1278
        this->clear(this->rdstate() & ~ios_base::eofbit);
1279
        sentry __sen(*this, true);
1280
        if (__sen)
1281
        {
1282
            if (this->rdbuf() == 0 || this->rdbuf()->sputbackc(__c) == traits_type::eof())
1283
                this->setstate(ios_base::badbit);
1284
        }
1285
        else
1286
            this->setstate(ios_base::failbit);
1287
#ifndef _LIBCPP_NO_EXCEPTIONS
1288
    }
1289
    catch (...)
1290
    {
1291
        this->__set_badbit_and_consider_rethrow();
1292
    }
1293
#endif  // _LIBCPP_NO_EXCEPTIONS
1294
    return *this;
1295
}
1296
1297
template<class _CharT, class _Traits>
1298
basic_istream<_CharT, _Traits>&
1299
basic_istream<_CharT, _Traits>::unget()
1300
{
1301
    __gc_ = 0;
1302
#ifndef _LIBCPP_NO_EXCEPTIONS
1303
    try
1304
    {
1305
#endif  // _LIBCPP_NO_EXCEPTIONS
1306
        this->clear(this->rdstate() & ~ios_base::eofbit);
1307
        sentry __sen(*this, true);
1308
        if (__sen)
1309
        {
1310
            if (this->rdbuf() == 0 || this->rdbuf()->sungetc() == traits_type::eof())
1311
                this->setstate(ios_base::badbit);
1312
        }
1313
        else
1314
            this->setstate(ios_base::failbit);
1315
#ifndef _LIBCPP_NO_EXCEPTIONS
1316
    }
1317
    catch (...)
1318
    {
1319
        this->__set_badbit_and_consider_rethrow();
1320
    }
1321
#endif  // _LIBCPP_NO_EXCEPTIONS
1322
    return *this;
1323
}
1324
1325
template<class _CharT, class _Traits>
1326
int
1327
basic_istream<_CharT, _Traits>::sync()
1328
{
1329
    int __r = 0;
1330
#ifndef _LIBCPP_NO_EXCEPTIONS
1331
    try
1332
    {
1333
#endif  // _LIBCPP_NO_EXCEPTIONS
1334
        sentry __sen(*this, true);
1335
        if (__sen)
1336
        {
1337
            if (this->rdbuf() == 0)
1338
                return -1;
1339
            if (this->rdbuf()->pubsync() == -1)
1340
            {
1341
                this->setstate(ios_base::badbit);
1342
                return -1;
1343
            }
1344
        }
1345
#ifndef _LIBCPP_NO_EXCEPTIONS
1346
    }
1347
    catch (...)
1348
    {
1349
        this->__set_badbit_and_consider_rethrow();
1350
    }
1351
#endif  // _LIBCPP_NO_EXCEPTIONS
1352
    return __r;
1353
}
1354
1355
template<class _CharT, class _Traits>
1356
typename basic_istream<_CharT, _Traits>::pos_type
1357
basic_istream<_CharT, _Traits>::tellg()
1358
{
1359
    pos_type __r(-1);
1360
#ifndef _LIBCPP_NO_EXCEPTIONS
1361
    try
1362
    {
1363
#endif  // _LIBCPP_NO_EXCEPTIONS
1364
        sentry __sen(*this, true);
1365
        if (__sen)
1366
            __r = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::in);
1367
#ifndef _LIBCPP_NO_EXCEPTIONS
1368
    }
1369
    catch (...)
1370
    {
1371
        this->__set_badbit_and_consider_rethrow();
1372
    }
1373
#endif  // _LIBCPP_NO_EXCEPTIONS
1374
    return __r;
1375
}
1376
1377
template<class _CharT, class _Traits>
1378
basic_istream<_CharT, _Traits>&
1379
basic_istream<_CharT, _Traits>::seekg(pos_type __pos)
1380
{
1381
#ifndef _LIBCPP_NO_EXCEPTIONS
1382
    try
1383
    {
1384
#endif  // _LIBCPP_NO_EXCEPTIONS
1385
        this->clear(this->rdstate() & ~ios_base::eofbit);
1386
        sentry __sen(*this, true);
1387
        if (__sen)
1388
        {
1389
            if (this->rdbuf()->pubseekpos(__pos, ios_base::in) == pos_type(-1))
1390
                this->setstate(ios_base::failbit);
1391
        }
1392
#ifndef _LIBCPP_NO_EXCEPTIONS
1393
    }
1394
    catch (...)
1395
    {
1396
        this->__set_badbit_and_consider_rethrow();
1397
    }
1398
#endif  // _LIBCPP_NO_EXCEPTIONS
1399
    return *this;
1400
}
1401
1402
template<class _CharT, class _Traits>
1403
basic_istream<_CharT, _Traits>&
1404
basic_istream<_CharT, _Traits>::seekg(off_type __off, ios_base::seekdir __dir)
1405
{
1406
#ifndef _LIBCPP_NO_EXCEPTIONS
1407
    try
1408
    {
1409
#endif  // _LIBCPP_NO_EXCEPTIONS
1410
        sentry __sen(*this, true);
1411
        if (__sen)
1412
        {
1413
            if (this->rdbuf()->pubseekoff(__off, __dir, ios_base::in) == pos_type(-1))
1414
                this->setstate(ios_base::failbit);
1415
        }
1416
#ifndef _LIBCPP_NO_EXCEPTIONS
1417
    }
1418
    catch (...)
1419
    {
1420
        this->__set_badbit_and_consider_rethrow();
1421
    }
1422
#endif  // _LIBCPP_NO_EXCEPTIONS
1423
    return *this;
1424
}
1425
1426
template <class _CharT, class _Traits>
1427
basic_istream<_CharT, _Traits>&
1428
ws(basic_istream<_CharT, _Traits>& __is)
1429
{
1430
#ifndef _LIBCPP_NO_EXCEPTIONS
1431
    try
1432
    {
1433
#endif  // _LIBCPP_NO_EXCEPTIONS
1434
        typename basic_istream<_CharT, _Traits>::sentry __sen(__is, true);
1435
        if (__sen)
1436
        {
1437
            const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc());
1438
            while (true)
1439
            {
1440
                typename _Traits::int_type __i = __is.rdbuf()->sgetc();
1441
                if (_Traits::eq_int_type(__i, _Traits::eof()))
1442
                {
1443
                   __is.setstate(ios_base::eofbit);
1444
                   break;
1445
                }
1446
                if (!__ct.is(__ct.space, _Traits::to_char_type(__i)))
1447
                    break;
1448
                __is.rdbuf()->sbumpc();
1449
            }
1450
        }
1451
#ifndef _LIBCPP_NO_EXCEPTIONS
1452
    }
1453
    catch (...)
1454
    {
1455
        __is.__set_badbit_and_consider_rethrow();
1456
    }
1457
#endif  // _LIBCPP_NO_EXCEPTIONS
1458
    return __is;
1459
}
1460
1461
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
1462
1463
template <class _CharT, class _Traits, class _Tp>
1464
inline _LIBCPP_INLINE_VISIBILITY
1465
basic_istream<_CharT, _Traits>&
1466
operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
1467
{
1468
    __is >> __x;
1469
    return __is;
1470
}
1471
1472
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
1473
1474
template <class _CharT, class _Traits>
1475
class _LIBCPP_TYPE_VIS_ONLY basic_iostream
1476
    : public basic_istream<_CharT, _Traits>,
1477
      public basic_ostream<_CharT, _Traits>
1478
{
1479
public:
1480
    // types:
1481
    typedef _CharT                         char_type;
1482
    typedef _Traits                        traits_type;
1483
    typedef typename traits_type::int_type int_type;
1484
    typedef typename traits_type::pos_type pos_type;
1485
    typedef typename traits_type::off_type off_type;
1486
1487
    // constructor/destructor
1488
    explicit basic_iostream(basic_streambuf<char_type, traits_type>* __sb);
1489
    virtual ~basic_iostream();
1490
protected:
1491
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
1492
    _LIBCPP_INLINE_VISIBILITY
1493
    basic_iostream(basic_iostream&& __rhs);
1494
#endif
1495
1496
    // assign/swap
1497
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
1498
    _LIBCPP_INLINE_VISIBILITY
1499
    basic_iostream& operator=(basic_iostream&& __rhs);
1500
#endif
1501
    void swap(basic_iostream& __rhs);
1502
public:
1503
};
1504
1505
template <class _CharT, class _Traits>
1506
inline _LIBCPP_INLINE_VISIBILITY
1507
basic_iostream<_CharT, _Traits>::basic_iostream(basic_streambuf<char_type, traits_type>* __sb)
1508
    : basic_istream<_CharT, _Traits>(__sb)
1509
{
1510
}
1511
1512
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
1513
1514
template <class _CharT, class _Traits>
1515
inline _LIBCPP_INLINE_VISIBILITY
1516
basic_iostream<_CharT, _Traits>::basic_iostream(basic_iostream&& __rhs)
1517
    : basic_istream<_CharT, _Traits>(_VSTD::move(__rhs))
1518
{
1519
}
1520
1521
template <class _CharT, class _Traits>
1522
inline _LIBCPP_INLINE_VISIBILITY
1523
basic_iostream<_CharT, _Traits>&
1524
basic_iostream<_CharT, _Traits>::operator=(basic_iostream&& __rhs)
1525
{
1526
    swap(__rhs);
1527
    return *this;
1528
}
1529
1530
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
1531
1532
template <class _CharT, class _Traits>
1533
basic_iostream<_CharT, _Traits>::~basic_iostream()
1534
{
1535
}
1536
1537
template <class _CharT, class _Traits>
1538
inline _LIBCPP_INLINE_VISIBILITY
1539
void
1540
basic_iostream<_CharT, _Traits>::swap(basic_iostream& __rhs)
1541
{
1542
    basic_istream<char_type, traits_type>::swap(__rhs);
1543
}
1544
1545
template<class _CharT, class _Traits, class _Allocator>
1546
basic_istream<_CharT, _Traits>&
1547
operator>>(basic_istream<_CharT, _Traits>& __is,
1548
           basic_string<_CharT, _Traits, _Allocator>& __str)
1549
{
1550
#ifndef _LIBCPP_NO_EXCEPTIONS
1551
    try
1552
    {
1553
#endif  // _LIBCPP_NO_EXCEPTIONS
1554
        typename basic_istream<_CharT, _Traits>::sentry __sen(__is);
1555
        if (__sen)
1556
        {
1557
            __str.clear();
1558
            streamsize __n = __is.width();
1559
            if (__n <= 0)
1560
                __n = __str.max_size();
1561
            if (__n <= 0)
1562
                __n = numeric_limits<streamsize>::max();
1563
            streamsize __c = 0;
1564
            const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc());
1565
            ios_base::iostate __err = ios_base::goodbit;
1566
            while (__c < __n)
1567
            {
1568
                typename _Traits::int_type __i = __is.rdbuf()->sgetc();
1569
                if (_Traits::eq_int_type(__i, _Traits::eof()))
1570
                {
1571
                   __err |= ios_base::eofbit;
1572
                   break;
1573
                }
1574
                _CharT __ch = _Traits::to_char_type(__i);
1575
                if (__ct.is(__ct.space, __ch))
1576
                    break;
1577
                __str.push_back(__ch);
1578
                ++__c;
1579
                 __is.rdbuf()->sbumpc();
1580
            }
1581
            __is.width(0);
1582
            if (__c == 0)
1583
               __err |= ios_base::failbit;
1584
            __is.setstate(__err);
1585
        }
1586
        else
1587
            __is.setstate(ios_base::failbit);
1588
#ifndef _LIBCPP_NO_EXCEPTIONS
1589
    }
1590
    catch (...)
1591
    {
1592
        __is.__set_badbit_and_consider_rethrow();
1593
    }
1594
#endif  // _LIBCPP_NO_EXCEPTIONS
1595
    return __is;
1596
}
1597
1598
template<class _CharT, class _Traits, class _Allocator>
1599
basic_istream<_CharT, _Traits>&
1600
getline(basic_istream<_CharT, _Traits>& __is,
1601
        basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm)
1602
{
1603
#ifndef _LIBCPP_NO_EXCEPTIONS
1604
    try
1605
    {
1606
#endif  // _LIBCPP_NO_EXCEPTIONS
1607
        typename basic_istream<_CharT, _Traits>::sentry __sen(__is, true);
1608
        if (__sen)
1609
        {
1610
            __str.clear();
1611
            ios_base::iostate __err = ios_base::goodbit;
1612
            streamsize __extr = 0;
1613
            while (true)
1614
            {
1615
                typename _Traits::int_type __i = __is.rdbuf()->sbumpc();
1616
                if (_Traits::eq_int_type(__i, _Traits::eof()))
1617
                {
1618
                   __err |= ios_base::eofbit;
1619
                   break;
1620
                }
1621
                ++__extr;
1622
                _CharT __ch = _Traits::to_char_type(__i);
1623
                if (_Traits::eq(__ch, __dlm))
1624
                    break;
1625
                __str.push_back(__ch);
1626
                if (__str.size() == __str.max_size())
1627
                {
1628
                    __err |= ios_base::failbit;
1629
                    break;
1630
                }
1631
            }
1632
            if (__extr == 0)
1633
               __err |= ios_base::failbit;
1634
            __is.setstate(__err);
1635
        }
1636
#ifndef _LIBCPP_NO_EXCEPTIONS
1637
    }
1638
    catch (...)
1639
    {
1640
        __is.__set_badbit_and_consider_rethrow();
1641
    }
1642
#endif  // _LIBCPP_NO_EXCEPTIONS
1643
    return __is;
1644
}
1645
1646
template<class _CharT, class _Traits, class _Allocator>
1647
inline _LIBCPP_INLINE_VISIBILITY
1648
basic_istream<_CharT, _Traits>&
1649
getline(basic_istream<_CharT, _Traits>& __is,
1650
        basic_string<_CharT, _Traits, _Allocator>& __str)
1651
{
1652
    return getline(__is, __str, __is.widen('\n'));
1653
}
1654
1655
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
1656
1657
template<class _CharT, class _Traits, class _Allocator>
1658
inline _LIBCPP_INLINE_VISIBILITY
1659
basic_istream<_CharT, _Traits>&
1660
getline(basic_istream<_CharT, _Traits>&& __is,
1661
        basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm)
1662
{
1663
    return getline(__is, __str, __dlm);
1664
}
1665
1666
template<class _CharT, class _Traits, class _Allocator>
1667
inline _LIBCPP_INLINE_VISIBILITY
1668
basic_istream<_CharT, _Traits>&
1669
getline(basic_istream<_CharT, _Traits>&& __is,
1670
        basic_string<_CharT, _Traits, _Allocator>& __str)
1671
{
1672
    return getline(__is, __str, __is.widen('\n'));
1673
}
1674
1675
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
1676
1677
template <class _CharT, class _Traits, size_t _Size>
1678
basic_istream<_CharT, _Traits>&
1679
operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x)
1680
{
1681
#ifndef _LIBCPP_NO_EXCEPTIONS
1682
    try
1683
    {
1684
#endif  // _LIBCPP_NO_EXCEPTIONS
1685
        typename basic_istream<_CharT, _Traits>::sentry __sen(__is);
1686
        if (__sen)
1687
        {
1688
            basic_string<_CharT, _Traits> __str;
1689
            const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__is.getloc());
1690
            streamsize __c = 0;
1691
            ios_base::iostate __err = ios_base::goodbit;
1692
            _CharT __zero = __ct.widen('0');
1693
            _CharT __one = __ct.widen('1');
1694
            while (__c < _Size)
1695
            {
1696
                typename _Traits::int_type __i = __is.rdbuf()->sgetc();
1697
                if (_Traits::eq_int_type(__i, _Traits::eof()))
1698
                {
1699
                   __err |= ios_base::eofbit;
1700
                   break;
1701
                }
1702
                _CharT __ch = _Traits::to_char_type(__i);
1703
                if (!_Traits::eq(__ch, __zero) && !_Traits::eq(__ch, __one))
1704
                    break;
1705
                __str.push_back(__ch);
1706
                ++__c;
1707
                 __is.rdbuf()->sbumpc();
1708
            }
1709
            __x = bitset<_Size>(__str);
1710
            if (__c == 0)
1711
               __err |= ios_base::failbit;
1712
            __is.setstate(__err);
1713
        }
1714
        else
1715
            __is.setstate(ios_base::failbit);
1716
#ifndef _LIBCPP_NO_EXCEPTIONS
1717
    }
1718
    catch (...)
1719
    {
1720
        __is.__set_badbit_and_consider_rethrow();
1721
    }
1722
#endif  // _LIBCPP_NO_EXCEPTIONS
1723
    return __is;
1724
}
1725
1726
_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_istream<char>)
1727
_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_istream<wchar_t>)
1728
_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_iostream<char>)
1729
1730
_LIBCPP_END_NAMESPACE_STD
1731
1732
#endif  // _LIBCPP_ISTREAM