projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 92d0a6a6 | 1 | // -*- C++ -*- |
| 4d3e9548 JL |
2 | /* Copyright (C) 1989, 1990, 1991, 1992, 2009 |
| 3 | Free Software Foundation, Inc. | |
| 92d0a6a6 JR |
4 | Written by James Clark (jjc@jclark.com) |
| 5 | ||
| 6 | This file is part of groff. | |
| 7 | ||
| 8 | groff is free software; you can redistribute it and/or modify it under | |
| 9 | the terms of the GNU General Public License as published by the Free | |
| 4d3e9548 JL |
10 | Software Foundation, either version 3 of the License, or |
| 11 | (at your option) any later version. | |
| 92d0a6a6 JR |
12 | |
| 13 | groff is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 | for more details. | |
| 17 | ||
| 4d3e9548 JL |
18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 92d0a6a6 JR |
20 | |
| 21 | class reference_id { | |
| 22 | int filename_id; | |
| 23 | int pos; | |
| 24 | public: | |
| 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 | ||
| 32 | inline int operator==(const reference_id &r1, const reference_id &r2) | |
| 33 | { | |
| 34 | return r1.filename_id == r2.filename_id && r1.pos == r2.pos; | |
| 35 | } |