iomanip

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00001 // Standard stream manipulators -*- C++ -*-
00002 
00003 // Copyright (C) 1997, 1998, 1999, 2001, 2002 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the
00007 // terms of the GNU General Public License as published by the
00008 // Free Software Foundation; either version 2, or (at your option)
00009 // any later version.
00010 
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 
00016 // You should have received a copy of the GNU General Public License along
00017 // with this library; see the file COPYING.  If not, write to the Free
00018 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00019 // USA.
00020 
00021 // As a special exception, you may use this file as part of a free software
00022 // library without restriction.  Specifically, if other files instantiate
00023 // templates or use macros or inline functions from this file, or you compile
00024 // this file and link it with other files to produce an executable, this
00025 // file does not by itself cause the resulting executable to be covered by
00026 // the GNU General Public License.  This exception does not however
00027 // invalidate any other reasons why the executable file might be covered by
00028 // the GNU General Public License.
00029 
00030 //
00031 // ISO C++ 14882: 27.6.3  Standard manipulators
00032 //
00033 
00039 #ifndef _CPP_IOMANIP
00040 #define _CPP_IOMANIP 1
00041 
00042 #pragma GCC system_header
00043 
00044 #include <bits/c++config.h>
00045 #include <istream>
00046 #include <functional>
00047 
00048 namespace std
00049 {
00050   struct _Resetiosflags { ios_base::fmtflags _M_mask; };
00051 
00052   inline _Resetiosflags 
00053   resetiosflags(ios_base::fmtflags __mask)
00054   { 
00055     _Resetiosflags __x; 
00056     __x._M_mask = __mask; 
00057     return __x; 
00058   }
00059 
00060   template<typename _CharT, typename _Traits>
00061     inline basic_istream<_CharT,_Traits>& 
00062     operator>>(basic_istream<_CharT,_Traits>& __is, _Resetiosflags __f)
00063     { 
00064       __is.setf(ios_base::fmtflags(0), __f._M_mask); 
00065       return __is; 
00066     }
00067 
00068   template<typename _CharT, typename _Traits>
00069     inline basic_ostream<_CharT,_Traits>& 
00070     operator<<(basic_ostream<_CharT,_Traits>& __os, _Resetiosflags __f)
00071     { 
00072       __os.setf(ios_base::fmtflags(0), __f._M_mask); 
00073       return __os; 
00074     }
00075 
00076 
00077   struct _Setiosflags { ios_base::fmtflags _M_mask; };
00078 
00079   inline _Setiosflags 
00080   setiosflags(ios_base::fmtflags __mask)
00081   { 
00082     _Setiosflags __x; 
00083     __x._M_mask = __mask; 
00084     return __x; 
00085   }
00086 
00087   template<typename _CharT, typename _Traits>
00088     inline basic_istream<_CharT,_Traits>& 
00089     operator>>(basic_istream<_CharT,_Traits>& __is, _Setiosflags __f)
00090     { 
00091       __is.setf(__f._M_mask); 
00092       return __is; 
00093     }
00094 
00095   template<typename _CharT, typename _Traits>
00096     inline basic_ostream<_CharT,_Traits>& 
00097     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setiosflags __f)
00098     { 
00099       __os.setf(__f._M_mask); 
00100       return __os; 
00101     }
00102 
00103 
00104   struct _Setbase { int _M_base; };
00105 
00106   inline _Setbase 
00107   setbase(int __base)
00108   { 
00109     _Setbase __x; 
00110     __x._M_base = __base; 
00111     return __x; 
00112   }
00113 
00114   template<typename _CharT, typename _Traits>
00115     inline basic_istream<_CharT,_Traits>& 
00116     operator>>(basic_istream<_CharT,_Traits>& __is, _Setbase __f)
00117     {
00118       __is.setf(__f._M_base ==  8 ? ios_base::oct : 
00119           __f._M_base == 10 ? ios_base::dec : 
00120           __f._M_base == 16 ? ios_base::hex : 
00121           ios_base::fmtflags(0), ios_base::basefield);
00122       return __is; 
00123     }
00124   
00125   template<typename _CharT, typename _Traits>
00126     inline basic_ostream<_CharT,_Traits>& 
00127     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setbase __f)
00128     {
00129       __os.setf(__f._M_base ==  8 ? ios_base::oct : 
00130         __f._M_base == 10 ? ios_base::dec : 
00131         __f._M_base == 16 ? ios_base::hex : 
00132         ios_base::fmtflags(0), ios_base::basefield);
00133       return __os; 
00134     }
00135   
00136 
00137   template<typename _CharT> 
00138     struct _Setfill { _CharT _M_c; };
00139 
00140   template<typename _CharT> 
00141     inline _Setfill<_CharT> 
00142     setfill(_CharT __c)
00143     { 
00144       _Setfill<_CharT> __x; 
00145       __x._M_c = __c; 
00146       return __x; 
00147     }
00148 
00149   template<typename _CharT, typename _Traits>
00150     inline basic_istream<_CharT,_Traits>& 
00151     operator>>(basic_istream<_CharT,_Traits>& __is, _Setfill<_CharT> __f)
00152     { 
00153       __is.fill(__f._M_c); 
00154       return __is; 
00155     }
00156 
00157   template<typename _CharT, typename _Traits>
00158     inline basic_ostream<_CharT,_Traits>& 
00159     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setfill<_CharT> __f)
00160     { 
00161       __os.fill(__f._M_c); 
00162       return __os; 
00163     }
00164 
00165 
00166   struct _Setprecision { int _M_n; };
00167 
00168   inline _Setprecision 
00169   setprecision(int __n)
00170   { 
00171     _Setprecision __x; 
00172     __x._M_n = __n; 
00173     return __x; 
00174   }
00175 
00176   template<typename _CharT, typename _Traits>
00177     inline basic_istream<_CharT,_Traits>& 
00178     operator>>(basic_istream<_CharT,_Traits>& __is, _Setprecision __f)
00179     { 
00180       __is.precision(__f._M_n); 
00181       return __is; 
00182     }
00183 
00184   template<typename _CharT, typename _Traits>
00185     inline basic_ostream<_CharT,_Traits>& 
00186     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setprecision __f)
00187     { 
00188       __os.precision(__f._M_n); 
00189       return __os; 
00190     }
00191 
00192 
00193   struct _Setw { int _M_n; };
00194 
00195   inline _Setw 
00196   setw(int __n)
00197   { 
00198     _Setw __x; 
00199     __x._M_n = __n; 
00200     return __x; 
00201   }
00202 
00203   template<typename _CharT, typename _Traits>
00204     inline basic_istream<_CharT,_Traits>& 
00205     operator>>(basic_istream<_CharT,_Traits>& __is, _Setw __f)
00206     { 
00207       __is.width(__f._M_n); 
00208       return __is; 
00209     }
00210 
00211   template<typename _CharT, typename _Traits>
00212     inline basic_ostream<_CharT,_Traits>& 
00213     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setw __f)
00214     { 
00215       __os.width(__f._M_n); 
00216       return __os; 
00217     }
00218 
00219   // Inhibit implicit instantiations for required instantiations,
00220   // which are defined via explicit instantiations elsewhere.  
00221   // NB:  This syntax is a GNU extension.
00222   extern template ostream& operator<<(ostream&, _Setfill<char>);
00223   extern template ostream& operator<<(ostream&, _Setiosflags);
00224   extern template ostream& operator<<(ostream&, _Resetiosflags);
00225   extern template ostream& operator<<(ostream&, _Setbase);
00226   extern template ostream& operator<<(ostream&, _Setprecision);
00227   extern template ostream& operator<<(ostream&, _Setw);
00228   extern template wostream& operator<<(wostream&, _Setfill<wchar_t>);
00229   extern template wostream& operator<<(wostream&, _Setiosflags);
00230   extern template wostream& operator<<(wostream&, _Resetiosflags);
00231   extern template wostream& operator<<(wostream&, _Setbase);
00232   extern template wostream& operator<<(wostream&, _Setprecision);
00233   extern template wostream& operator<<(wostream&, _Setw);
00234 
00235   extern template istream& operator>>(istream&, _Setfill<char>);
00236   extern template istream& operator>>(istream&, _Setiosflags);
00237   extern template istream& operator>>(istream&, _Resetiosflags);
00238   extern template istream& operator>>(istream&, _Setbase);
00239   extern template istream& operator>>(istream&, _Setprecision);
00240   extern template istream& operator>>(istream&, _Setw);
00241   extern template wistream& operator>>(wistream&, _Setfill<wchar_t>);
00242   extern template wistream& operator>>(wistream&, _Setiosflags);
00243   extern template wistream& operator>>(wistream&, _Resetiosflags);
00244   extern template wistream& operator>>(wistream&, _Setbase);
00245   extern template wistream& operator>>(wistream&, _Setprecision);
00246   extern template wistream& operator>>(wistream&, _Setw);
00247 } // namespace std
00248 
00249 #endif  

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