gnu/usr.bin/groff/libgroff/errarg.h

   1 // -*- C++ -*-
   2 /* Copyright (C) 1989, 1990 Free Software Foundation, Inc.
   3      Written by James Clark (jjc@jclark.uucp)
   4
   5 This file is part of groff.
   6
   7 groff is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 1, or (at your option) any later
  10 version.
  11
  12 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with groff; see the file LICENSE.  If not, write to the Free Software
  19 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
  20
  21 class errarg {
  22   enum { EMPTY, STRING, CHAR, INTEGER, DOUBLE } type;
  23   union {
  24     const char *s;
  25     int n;
  26     char c;
  27     double d;
  28   };
  29  public:
  30   errarg();
  31   errarg(const char *);
  32   errarg(char);
  33   errarg(unsigned char);
  34   errarg(int);
  35   errarg(double);
  36   int empty() const;
  37   void print() const;
  38 };
  39
  40 extern errarg empty_errarg;
  41
  42 extern void errprint(const char *,
  43                      const errarg &arg1 = empty_errarg,
  44                      const errarg &arg2 = empty_errarg,
  45                      const errarg &arg3 = empty_errarg);
  46