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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace Wikimedia\Parsoid\Wt2Html\DOM\Processors; |
| 5 | |
| 6 | use Wikimedia\Parsoid\Config\Env; |
| 7 | use Wikimedia\Parsoid\DOM\Element; |
| 8 | use Wikimedia\Parsoid\DOM\Node; |
| 9 | use Wikimedia\Parsoid\Utils\DOMCompat; |
| 10 | use Wikimedia\Parsoid\Utils\DOMUtils; |
| 11 | |
| 12 | class PWrapState { |
| 13 | |
| 14 | private const RANGE_TYPE_RE = '!^mw:(Transclusion(/|$)|Param(/|$)|Annotation/)!'; |
| 15 | |
| 16 | /** @var ?Element */ |
| 17 | public $p = null; |
| 18 | |
| 19 | /** @var bool */ |
| 20 | private $hasOptionalNode = false; |
| 21 | |
| 22 | /** |
| 23 | * About ids of starts we've seen in this paragraph |
| 24 | * |
| 25 | * @var array |
| 26 | */ |
| 27 | private $seenStarts = []; |
| 28 | |
| 29 | private Env $env; |
| 30 | |
| 31 | public function __construct( Env $env ) { |
| 32 | $this->env = $env; |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * Unwrap + reset |
| 37 | */ |
| 38 | public function reset() { |
| 39 | $this->unwrapTrailingPWrapOptionalNodes(); |
| 40 | |
| 41 | $this->p = null; |
| 42 | $this->hasOptionalNode = false; |
| 43 | $this->seenStarts = []; |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * Record that we've encountered an optional node to potentially unwrap |
| 48 | * |
| 49 | * @param Node $n |
| 50 | */ |
| 51 | public function processOptionalNode( Node $n ) { |
| 52 | $t = DOMUtils::matchNameAndTypeOf( $n, 'meta', self::RANGE_TYPE_RE ); |
| 53 | $this->hasOptionalNode = (bool)$t || $this->hasOptionalNode; |
| 54 | if ( $t && !str_ends_with( $t, '/End' ) ) { |
| 55 | '@phan-var Element $n'; // @var Element $n |
| 56 | $about = DOMCompat::getAttribute( $n, 'about' ); |
| 57 | if ( $about !== null ) { |
| 58 | $this->seenStarts[$about] = true; |
| 59 | } |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Unwrap a run of trailing nodes that don't need p-wrapping. |
| 65 | * This only matters for meta tags representing transclusions |
| 66 | * and annotations. Unwrapping can prevent unnecessary expansion |
| 67 | * of template/annotation ranges. |
| 68 | */ |
| 69 | private function unwrapTrailingPWrapOptionalNodes() { |
| 70 | if ( $this->hasOptionalNode ) { |
| 71 | $lastChild = $this->p->lastChild; |
| 72 | while ( PWrap::pWrapOptional( $this->env, $lastChild ) ) { |
| 73 | $t = DOMUtils::matchNameAndTypeOf( $lastChild, 'meta', self::RANGE_TYPE_RE ); |
| 74 | if ( $t && str_ends_with( $t, '/End' ) ) { |
| 75 | '@phan-var Element $lastChild'; // @var Element $lastChild |
| 76 | // Check if one of its prior siblings has a matching opening tag. |
| 77 | // If so, we are done with unwrapping here since we don't want to |
| 78 | // hoist this closing tag by itself. |
| 79 | $aboutId = DOMCompat::getAttribute( $lastChild, 'about' ); |
| 80 | if ( $this->seenStarts[$aboutId] ?? null ) { |
| 81 | break; |
| 82 | } |
| 83 | } |
| 84 | $this->p->parentNode->insertBefore( $lastChild, $this->p->nextSibling ); |
| 85 | $lastChild = $this->p->lastChild; |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | } |