Category : C++ Source Code
Archive : VCCRT2.ZIP
Filename : ISTREAM.H
Output of file : ISTREAM.H contained in archive : VCCRT2.ZIP
*istream.h - definitions/declarations for the istream class
*
* Copyright (c) 1990-1992, Microsoft Corporation. All rights reserved.
*
*Purpose:
* This file defines the classes, values, macros, and functions
* used by the istream class.
* [AT&T C++]
*
****/
#ifndef _INC_ISTREAM
#define _INC_ISTREAM
#include
// Force word packing to avoid possible -Zp override
#pragma pack(2)
#pragma warning(disable:4505) // disable unwanted /W4 warning
// #pragma warning(default:4505) // use this to reenable, if necessary
#ifdef M_I86HM // fold huge member pointers into far
#define _HFAR_ __far
#else
#define _HFAR_
#endif
typedef long streamoff, streampos;
class istream : virtual public ios {
public:
istream(streambuf*);
virtual ~istream();
int ipfx(int =0);
void isfx() { }
inline istream& operator>>(istream& (*_f)(istream&));
inline istream& operator>>(ios& (*_f)(ios&));
istream& operator>>(char _HFAR_ *);
inline istream& operator>>(unsigned char _HFAR_ *);
inline istream& operator>>(signed char _HFAR_ *);
istream& operator>>(char _HFAR_ &);
inline istream& operator>>(unsigned char _HFAR_ &);
inline istream& operator>>(signed char _HFAR_ &);
istream& operator>>(short _HFAR_ &);
istream& operator>>(unsigned short _HFAR_ &);
istream& operator>>(int _HFAR_ &);
istream& operator>>(unsigned int _HFAR_ &);
istream& operator>>(long _HFAR_ &);
istream& operator>>(unsigned long _HFAR_ &);
istream& operator>>(float _HFAR_ &);
istream& operator>>(double _HFAR_ &);
istream& operator>>(long double _HFAR_ &);
istream& operator>>(streambuf*);
int get();
istream& get(char _HFAR_ *,int,char ='\n');
inline istream& get(unsigned char _HFAR_ *,int,char ='\n');
inline istream& get(signed char _HFAR_ *,int,char ='\n');
istream& get(char _HFAR_ &);
inline istream& get(unsigned char _HFAR_ &);
inline istream& get(signed char _HFAR_ &);
istream& get(streambuf&,char ='\n');
inline istream& getline(char _HFAR_ *,int,char ='\n');
inline istream& getline(unsigned char _HFAR_ *,int,char ='\n');
inline istream& getline(signed char _HFAR_ *,int,char ='\n');
inline istream& ignore(int =1,int =EOF);
istream& read(char _HFAR_ *,int);
inline istream& read(unsigned char _HFAR_ *,int);
inline istream& read(signed char _HFAR_ *,int);
int gcount() const { return x_gcount; }
int peek();
istream& putback(char);
int sync();
istream& seekg(streampos);
istream& seekg(streamoff,ios::seek_dir);
streampos tellg();
void eatwhite(); // consider: protect and friend with manipulator ws
protected:
istream();
istream(const istream&); // treat as private
istream& operator=(streambuf* _isb); // treat as private
istream& operator=(const istream& _is) { return operator=(_is.rdbuf()); }
int do_ipfx(int);
private:
istream(ios&);
int getint(char _HFAR_ *);
int getdouble(char _HFAR_ *, int);
int _fGline;
int x_gcount;
};
inline istream& istream::operator>>(istream& (*_f)(istream&)) { (*_f)(*this); return *this; }
inline istream& istream::operator>>(ios& (*_f)(ios&)) { (*_f)(*this); return *this; }
inline istream& istream::operator>>(unsigned char _HFAR_ * _s) { return operator>>((char _HFAR_ *)_s); }
inline istream& istream::operator>>(signed char _HFAR_ * _s) { return operator>>((char _HFAR_ *)_s); }
inline istream& istream::operator>>(unsigned char _HFAR_ & _c) { return operator>>((char _HFAR_ &) _c); }
inline istream& istream::operator>>(signed char _HFAR_ & _c) { return operator>>((char _HFAR_ &) _c); }
inline istream& istream::get(unsigned char _HFAR_ * b, int lim ,char delim) { return get((char _HFAR_ *)b, lim, delim); }
inline istream& istream::get(signed char _HFAR_ * b, int lim, char delim) { return get((char _HFAR_ *)b, lim, delim); }
inline istream& istream::get(unsigned char _HFAR_ & _c) { return get((char _HFAR_ &)_c); }
inline istream& istream::get(signed char _HFAR_ & _c) { return get((char _HFAR_ &)_c); }
inline istream& istream::getline(char _HFAR_ * _b,int _lim,char _delim) { _fGline++; return get(_b, _lim, _delim); }
inline istream& istream::getline(unsigned char _HFAR_ * _b,int _lim,char _delim) { _fGline++; return get((char _HFAR_ *)_b, _lim, _delim); }
inline istream& istream::getline(signed char _HFAR_ * _b,int _lim,char _delim) { _fGline++; return get((char _HFAR_ *)_b, _lim, _delim); }
inline istream& istream::ignore(int _n,int delim) { _fGline++; return get((char _HFAR_ *)0, _n+1, (char)delim); }
inline istream& istream::read(unsigned char _HFAR_ * _ptr, int _n) { return read((char _HFAR_ *) _ptr, _n); }
inline istream& istream::read(signed char _HFAR_ * _ptr, int _n) { return read((char _HFAR_ *) _ptr, _n); }
class istream_withassign : public istream {
public:
istream_withassign();
istream_withassign(streambuf*);
~istream_withassign();
istream& operator=(const istream& _is) { return istream::operator=(_is); }
istream& operator=(streambuf* _isb) { return istream::operator=(_isb); }
};
#ifndef _WINDLL // Warning! Not available under Windows without QuickWin:
extern istream_withassign cin;
#endif
inline istream& ws(istream& _ins) { _ins.eatwhite(); return _ins; }
ios& dec(ios&);
ios& hex(ios&);
ios& oct(ios&);
// Restore default packing
#pragma pack()
#endif // !_INC_ISTREAM
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