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/contrib/groff/src/include/refid.h

https://bitbucket.org/freebsd/freebsd-head/
C++ Header | 35 lines | 14 code | 2 blank | 19 comment | 3 complexity | b6f4c6f87a84d290914324d4ed43b688 MD5 | raw file
 1// -*- C++ -*-
 2/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
 3     Written by James Clark (jjc@jclark.com)
 4
 5This file is part of groff.
 6
 7groff is free software; you can redistribute it and/or modify it under
 8the terms of the GNU General Public License as published by the Free
 9Software Foundation; either version 2, or (at your option) any later
10version.
11
12groff is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License along
18with groff; see the file COPYING.  If not, write to the Free Software
19Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
20
21class reference_id {
22  int filename_id;
23  int pos;
24public:
25  reference_id() : filename_id(-1) { }
26  reference_id(int fid, int off) : filename_id(fid), pos(off) { }
27  unsigned hash() const { return (filename_id << 4) + pos; }
28  int is_null() const { return filename_id < 0; }
29  friend inline int operator==(const reference_id &, const reference_id &);
30};
31
32inline int operator==(const reference_id &r1, const reference_id &r2)
33{
34  return r1.filename_id == r2.filename_id && r1.pos == r2.pos;
35}