gfx/graphite2/src/Sparse.cpp@6474c204b198 (annotated)
gfx/graphite2/src/Sparse.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* GRAPHITE2 LICENSING |
| michael@0 | 2 | |
| michael@0 | 3 | Copyright 2011, SIL International |
| michael@0 | 4 | All rights reserved. |
| michael@0 | 5 | |
| michael@0 | 6 | This library is free software; you can redistribute it and/or modify |
| michael@0 | 7 | it under the terms of the GNU Lesser General Public License as published |
| michael@0 | 8 | by the Free Software Foundation; either version 2.1 of License, or |
| michael@0 | 9 | (at your option) any later version. |
| michael@0 | 10 | |
| michael@0 | 11 | This program is distributed in the hope that it will be useful, |
| michael@0 | 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| michael@0 | 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| michael@0 | 14 | Lesser General Public License for more details. |
| michael@0 | 15 | |
| michael@0 | 16 | You should also have received a copy of the GNU Lesser General Public |
| michael@0 | 17 | License along with this library in the file named "LICENSE". |
| michael@0 | 18 | If not, write to the Free Software Foundation, 51 Franklin Street, |
| michael@0 | 19 | Suite 500, Boston, MA 02110-1335, USA or visit their web page on the |
| michael@0 | 20 | internet at http://www.fsf.org/licenses/lgpl.html. |
| michael@0 | 21 | |
| michael@0 | 22 | Alternatively, the contents of this file may be used under the terms of the |
| michael@0 | 23 | Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public |
| michael@0 | 24 | License, as published by the Free Software Foundation, either version 2 |
| michael@0 | 25 | of the License or (at your option) any later version. |
| michael@0 | 26 | */ |
| michael@0 | 27 | #include <cassert> |
| michael@0 | 28 | #include "inc/Sparse.h" |
| michael@0 | 29 | #include "inc/bits.h" |
| michael@0 | 30 | |
| michael@0 | 31 | using namespace graphite2; |
| michael@0 | 32 | |
| michael@0 | 33 | sparse::chunk sparse::empty_chunk = {0,0}; |
| michael@0 | 34 | |
| michael@0 | 35 | sparse::~sparse() throw() |
| michael@0 | 36 | { |
| michael@0 | 37 | if (m_array.map == &empty_chunk) return; |
| michael@0 | 38 | free(m_array.values); |
| michael@0 | 39 | } |
| michael@0 | 40 | |
| michael@0 | 41 | |
| michael@0 | 42 | sparse::mapped_type sparse::operator [] (const key_type k) const throw() |
| michael@0 | 43 | { |
| michael@0 | 44 | mapped_type g = key_type(k/SIZEOF_CHUNK - m_nchunks) >> (sizeof k*8 - 1); |
| michael@0 | 45 | const chunk & c = m_array.map[g*k/SIZEOF_CHUNK]; |
| michael@0 | 46 | const mask_t m = c.mask >> (SIZEOF_CHUNK - 1 - (k%SIZEOF_CHUNK)); |
| michael@0 | 47 | g *= m & 1; |
| michael@0 | 48 | |
| michael@0 | 49 | return g*m_array.values[g*(c.offset + bit_set_count(m >> 1))]; |
| michael@0 | 50 | } |
| michael@0 | 51 | |
| michael@0 | 52 | |
| michael@0 | 53 | size_t sparse::capacity() const throw() |
| michael@0 | 54 | { |
| michael@0 | 55 | size_t n = m_nchunks, |
| michael@0 | 56 | s = 0; |
| michael@0 | 57 | |
| michael@0 | 58 | for (const chunk *ci=m_array.map; n; --n, ++ci) |
| michael@0 | 59 | s += bit_set_count(ci->mask); |
| michael@0 | 60 | |
| michael@0 | 61 | return s; |
| michael@0 | 62 | } |
