920253a3bc
Sun Sep 28 12:09:04 1997 Mark Mitchell <mmitchell@usa.net>
* iomanip.h: Use new friend <> syntax.
From-SVN: r15775
171 lines
5.3 KiB
C++
171 lines
5.3 KiB
C++
/* This is part of libio/iostream, providing -*- C++ -*- input/output.
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Copyright (C) 1993 Free Software Foundation
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This file is part of the GNU IO Library. This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this library; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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#ifndef _IOMANIP_H
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#ifdef __GNUG__
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#pragma interface
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#endif
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#define _IOMANIP_H
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#include <iostream.h>
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extern "C++" {
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//-----------------------------------------------------------------------------
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// Parametrized Manipulators as specified by ANSI draft
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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// Stream Manipulators
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//-----------------------------------------------------------------------------
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//
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template<class TP> class smanip; // TP = Type Param
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template<class TP> class sapp {
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ios& (*_f)(ios&, TP);
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public:
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sapp(ios& (*f)(ios&, TP)) : _f(f) {}
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//
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smanip<TP> operator()(TP a)
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{ return smanip<TP>(_f, a); }
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};
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template<class TP>
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inline istream& operator>>(istream& i, const smanip<TP>& m);
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template<class TP>
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inline ostream& operator<<(ostream& o, const smanip<TP>& m);
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template <class TP> class smanip {
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ios& (*_f)(ios&, TP);
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TP _a;
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public:
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smanip(ios& (*f)(ios&, TP), TP a) : _f(f), _a(a) {}
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//
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friend
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istream& operator>> <>(istream& i, const smanip<TP>& m);
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friend
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ostream& operator<< <>(ostream& o, const smanip<TP>& m);
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};
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#ifdef __GNUG__
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extern template class smanip<int>;
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extern template class smanip<ios::fmtflags>;
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#endif
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template<class TP>
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inline istream& operator>>(istream& i, const smanip<TP>& m)
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{ (*m._f)(i, m._a); return i; }
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template<class TP>
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inline ostream& operator<<(ostream& o, const smanip<TP>& m)
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{ (*m._f)(o, m._a); return o;}
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#ifdef __GNUG__
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extern template istream& operator>>(istream&, const smanip<int>&);
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extern template istream& operator>>(istream&, const smanip<ios::fmtflags>&);
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extern template ostream& operator<<(ostream&, const smanip<int>&);
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extern template ostream& operator<<(ostream&, const smanip<ios::fmtflags>&);
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#endif
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//-----------------------------------------------------------------------------
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// Input-Stream Manipulators
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//-----------------------------------------------------------------------------
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//
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template<class TP> class imanip;
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template<class TP> class iapp {
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istream& (*_f)(istream&, TP);
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public:
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iapp(istream& (*f)(istream&,TP)) : _f(f) {}
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//
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imanip<TP> operator()(TP a)
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{ return imanip<TP>(_f, a); }
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};
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template <class TP> class imanip {
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istream& (*_f)(istream&, TP);
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TP _a;
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public:
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imanip(istream& (*f)(istream&, TP), TP a) : _f(f), _a(a) {}
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//
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friend
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istream& operator>>(istream& i, const imanip<TP>& m);
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};
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template <class TP>
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inline istream& operator>>(istream& i, const imanip<TP>& m)
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{ return (*m._f)( i, m._a); }
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//-----------------------------------------------------------------------------
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// Output-Stream Manipulators
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//-----------------------------------------------------------------------------
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//
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template<class TP> class omanip;
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template<class TP> class oapp {
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ostream& (*_f)(ostream&, TP);
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public:
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oapp(ostream& (*f)(ostream&,TP)) : _f(f) {}
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//
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omanip<TP> operator()(TP a)
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{ return omanip<TP>(_f, a); }
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};
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template <class TP> class omanip {
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ostream& (*_f)(ostream&, TP);
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TP _a;
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public:
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omanip(ostream& (*f)(ostream&, TP), TP a) : _f(f), _a(a) {}
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//
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friend
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ostream& operator<<(ostream& o, const omanip<TP>& m);
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};
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template <class TP>
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inline ostream& operator<<(ostream& o, const omanip<TP>& m)
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{ return (*m._f)(o, m._a); }
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//-----------------------------------------------------------------------------
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// Available Manipulators
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//-----------------------------------------------------------------------------
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//
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// Macro to define an iomanip function, with one argument
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// The underlying function is `__iomanip_<name>'
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//
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#define __DEFINE_IOMANIP_FN1(type,param,function) \
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extern ios& __iomanip_##function (ios&, param); \
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inline type<param> function (param n) \
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{ return type<param> (__iomanip_##function, n); }
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__DEFINE_IOMANIP_FN1( smanip, int, setbase)
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__DEFINE_IOMANIP_FN1( smanip, int, setfill)
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__DEFINE_IOMANIP_FN1( smanip, int, setprecision)
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__DEFINE_IOMANIP_FN1( smanip, int, setw)
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__DEFINE_IOMANIP_FN1( smanip, ios::fmtflags, resetiosflags)
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__DEFINE_IOMANIP_FN1( smanip, ios::fmtflags, setiosflags)
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} // extern "C++"
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#endif /*!_IOMANIP_H*/
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