2 * Copyright (c) 2014 - 2017 Steffen (Daode) Nurpmeso <steffen@sdaoden.eu>.
4 * Copyright (C) 1989 - 1992 Free Software Foundation, Inc.
5 * Written by James Clark (jjc@jclark.com)
7 * This 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 2, or (at your option) any later
12 * This 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
17 * You should have received a copy of the GNU General Public License along
18 * with groff; see the file COPYING. If not, write to the Free Software
19 * Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA.
32 reference_id() : filename_id(-1) { }
33 reference_id(int fid
, int off
) : filename_id(fid
), pos(off
) { }
34 unsigned hash() const { return (filename_id
<< 4) + pos
; }
35 int is_null() const { return filename_id
< 0; }
36 friend inline int operator==(const reference_id
&, const reference_id
&);
39 inline int operator==(const reference_id
&r1
, const reference_id
&r2
)
41 return r1
.filename_id
== r2
.filename_id
&& r1
.pos
== r2
.pos
;