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| 1 | <?php |
| 2 | /** |
| 3 | * Preprocessor using PHP arrays |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | * @ingroup Parser |
| 22 | */ |
| 23 | |
| 24 | namespace MediaWiki\Parser; |
| 25 | |
| 26 | use Wikimedia\ObjectCache\WANObjectCache; |
| 27 | |
| 28 | /** |
| 29 | * Differences from DOM schema: |
| 30 | * * attribute nodes are children |
| 31 | * * "<h>" nodes that aren't at the top are replaced with <possible-h> |
| 32 | * |
| 33 | * Nodes are stored in a recursive array data structure. A node store is an |
| 34 | * array where each element may be either a scalar (representing a text node) |
| 35 | * or a "descriptor", which is a two-element array where the first element is |
| 36 | * the node name and the second element is the node store for the children. |
| 37 | * |
| 38 | * Attributes are represented as children that have a node name starting with |
| 39 | * "@", and a single text node child. |
| 40 | * |
| 41 | * @todo: Consider replacing descriptor arrays with objects of a new class. |
| 42 | * Benchmark and measure resulting memory impact. |
| 43 | * |
| 44 | * @ingroup Parser |
| 45 | */ |
| 46 | // phpcs:ignore Squiz.Classes.ValidClassName.NotCamelCaps |
| 47 | class Preprocessor_Hash extends Preprocessor { |
| 48 | /** Cache format version */ |
| 49 | protected const CACHE_VERSION = 4; |
| 50 | |
| 51 | /** @var int|false Min wikitext size for which to cache DOM tree */ |
| 52 | protected $cacheThreshold; |
| 53 | |
| 54 | /** |
| 55 | * @see Preprocessor::__construct() |
| 56 | * @param Parser $parser |
| 57 | * @param WANObjectCache|null $wanCache |
| 58 | * @param array $options Additional options include: |
| 59 | * - cacheThreshold: min text size for which to cache DOMs. [Default: false] |
| 60 | */ |
| 61 | public function __construct( |
| 62 | Parser $parser, |
| 63 | ?WANObjectCache $wanCache = null, |
| 64 | array $options = [] |
| 65 | ) { |
| 66 | parent::__construct( $parser, $wanCache, $options ); |
| 67 | |
| 68 | $this->cacheThreshold = $options['cacheThreshold'] ?? false; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * @return PPFrame_Hash |
| 73 | */ |
| 74 | public function newFrame() { |