diff options
Diffstat (limited to 'libstdc++-v3/include/std/istream')
| -rw-r--r-- | libstdc++-v3/include/std/istream | 274 |
1 files changed, 268 insertions, 6 deletions
diff --git a/libstdc++-v3/include/std/istream b/libstdc++-v3/include/std/istream index c3835065a34..7b5185289b2 100644 --- a/libstdc++-v3/include/std/istream +++ b/libstdc++-v3/include/std/istream @@ -1,6 +1,6 @@ -// -*- C++ -*- std header. +// Input streams -*- C++ -*- -// Copyright (C) 2001 Free Software Foundation, Inc. +// Copyright (C) 1997-1999, 2001 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the @@ -27,11 +27,273 @@ // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. -/** @file istream - * This is a Standard C++ Library file. You should @c #include this file - * in your programs, rather than any of the "st[dl]_*.h" implementation files. +// +// ISO C++ 14882: 27.6.1 Input streams +// + +/** @file std_istream.h + * This is an internal header file, included by other library headers. + * You should not attempt to use it directly. */ #ifndef _CPP_ISTREAM -#include <bits/std_istream.h> +#define _CPP_ISTREAM 1 + +#pragma GCC system_header + +#include <ios> +#include <limits> // For numeric_limits + +namespace std +{ + // 27.6.1.1 Template class basic_istream + template<typename _CharT, typename _Traits> + class basic_istream : virtual public basic_ios<_CharT, _Traits> + { + public: + // Types (inherited from basic_ios (27.4.4)): + typedef _CharT char_type; + typedef typename _Traits::int_type int_type; + typedef typename _Traits::pos_type pos_type; + typedef typename _Traits::off_type off_type; + typedef _Traits traits_type; + + // Non-standard Types: + typedef basic_streambuf<_CharT, _Traits> __streambuf_type; + typedef basic_ios<_CharT, _Traits> __ios_type; + typedef basic_istream<_CharT, _Traits> __istream_type; + typedef istreambuf_iterator<_CharT, _Traits> __istreambuf_iter; + typedef num_get<_CharT, __istreambuf_iter> __numget_type; + typedef ctype<_CharT> __ctype_type; + + protected: + // Data Members: + streamsize _M_gcount; + + public: + // 27.6.1.1.1 Constructor/destructor: + explicit + basic_istream(__streambuf_type* __sb) + { + this->init(__sb); + _M_gcount = streamsize(0); + } + + virtual + ~basic_istream() + { _M_gcount = streamsize(0); } + + // 27.6.1.1.2 Prefix/suffix: + class sentry; + friend class sentry; + + // 27.6.1.2 Formatted input: + // 27.6.1.2.3 basic_istream::operator>> + __istream_type& + operator>>(__istream_type& (*__pf)(__istream_type&)); + + __istream_type& + operator>>(__ios_type& (*__pf)(__ios_type&)); + + __istream_type& + operator>>(ios_base& (*__pf)(ios_base&)); + + // 27.6.1.2.2 Arithmetic Extractors + __istream_type& + operator>>(bool& __n); + + __istream_type& + operator>>(short& __n); + + __istream_type& + operator>>(unsigned short& __n); + + __istream_type& + operator>>(int& __n); + + __istream_type& + operator>>(unsigned int& __n); + + __istream_type& + operator>>(long& __n); + + __istream_type& + operator>>(unsigned long& __n); + +#ifdef _GLIBCPP_USE_LONG_LONG + __istream_type& + operator>>(long long& __n); + + __istream_type& + operator>>(unsigned long long& __n); #endif + + __istream_type& + operator>>(float& __f); + + __istream_type& + operator>>(double& __f); + + __istream_type& + operator>>(long double& __f); + + __istream_type& + operator>>(void*& __p); + + __istream_type& + operator>>(__streambuf_type* __sb); + + // 27.6.1.3 Unformatted input: + inline streamsize + gcount(void) const + { return _M_gcount; } + + int_type + get(void); + + __istream_type& + get(char_type& __c); + + __istream_type& + get(char_type* __s, streamsize __n, char_type __delim); + + inline __istream_type& + get(char_type* __s, streamsize __n) + { return this->get(__s, __n, this->widen('\n')); } + + __istream_type& + get(__streambuf_type& __sb, char_type __delim); + + inline __istream_type& + get(__streambuf_type& __sb) + { return this->get(__sb, this->widen('\n')); } + + __istream_type& + getline(char_type* __s, streamsize __n, char_type __delim); + + inline __istream_type& + getline(char_type* __s, streamsize __n) + { return this->getline(__s, __n, this->widen('\n')); } + + __istream_type& + ignore(streamsize __n = 1, int_type __delim = traits_type::eof()); + + int_type + peek(void); + + __istream_type& + read(char_type* __s, streamsize __n); + + streamsize + readsome(char_type* __s, streamsize __n); + + __istream_type& + putback(char_type __c); + + __istream_type& + unget(void); + + int + sync(void); + + pos_type + tellg(void); + + __istream_type& + seekg(pos_type); + + __istream_type& + seekg(off_type, ios_base::seekdir); + + private: +#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS + // Not defined. (Side effect of DR 50.) + __istream_type& + operator=(const __istream_type&); + + basic_istream(const __istream_type&); +#endif + }; + + template<typename _CharT, typename _Traits> + class basic_istream<_CharT, _Traits>::sentry + { + public: + typedef _Traits traits_type; + typedef basic_streambuf<_CharT, _Traits> __streambuf_type; + typedef basic_istream<_CharT, _Traits> __istream_type; + typedef typename __istream_type::__ctype_type __ctype_type; + typedef typename _Traits::int_type __int_type; + + explicit + sentry(basic_istream<_CharT, _Traits>& __is, bool __noskipws = false); + + operator bool() { return _M_ok; } + + private: + bool _M_ok; + }; + + // 27.6.1.2.3 Character extraction templates + template<typename _CharT, typename _Traits> + basic_istream<_CharT, _Traits>& + operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c); + + template<class _Traits> + basic_istream<char, _Traits>& + operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c) + { return (__in >> reinterpret_cast<char&>(__c)); } + + template<class _Traits> + basic_istream<char, _Traits>& + operator>>(basic_istream<char, _Traits>& __in, signed char& __c) + { return (__in >> reinterpret_cast<char&>(__c)); } + + template<typename _CharT, typename _Traits> + basic_istream<_CharT, _Traits>& + operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s); + + template<class _Traits> + basic_istream<char,_Traits>& + operator>>(basic_istream<char,_Traits>& __in, unsigned char* __s) + { return (__in >> reinterpret_cast<char*>(__s)); } + + template<class _Traits> + basic_istream<char,_Traits>& + operator>>(basic_istream<char,_Traits>& __in, signed char* __s) + { return (__in >> reinterpret_cast<char*>(__s)); } + + // 27.6.1.5 Template class basic_iostream + template<typename _CharT, typename _Traits> + class basic_iostream + : public basic_istream<_CharT, _Traits>, + public basic_ostream<_CharT, _Traits> + { + public: + // Non-standard Types: + typedef basic_istream<_CharT, _Traits> __istream_type; + typedef basic_ostream<_CharT, _Traits> __ostream_type; + + explicit + basic_iostream(basic_streambuf<_CharT, _Traits>* __sb) + : __istream_type(__sb), __ostream_type(__sb) + { } + + virtual + ~basic_iostream() { } + }; + + // 27.6.1.4 Standard basic_istream manipulators + template<typename _CharT, typename _Traits> + basic_istream<_CharT, _Traits>& + ws(basic_istream<_CharT, _Traits>& __is); +} // namespace std + +#ifdef _GLIBCPP_NO_TEMPLATE_EXPORT +# define export +#ifdef _GLIBCPP_FULLY_COMPLIANT_HEADERS +# include <bits/istream.tcc> +#endif +#endif + +#endif /* _CPP_ISTREAM */ |