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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace Wikimedia\Parsoid\NodeData; |
| 5 | |
| 6 | use Wikimedia\JsonCodec\JsonCodecable; |
| 7 | use Wikimedia\JsonCodec\JsonCodecableTrait; |
| 8 | use Wikimedia\Parsoid\Utils\RichCodecable; |
| 9 | |
| 10 | /** |
| 11 | * Diff markers for a DOM node. Managed by |
| 12 | * DOMDataUtils::get/setDataParsoidDiff and DiffUtils::get/setDiffMark. |
| 13 | */ |
| 14 | class DataParsoidDiff implements JsonCodecable, RichCodecable { |
| 15 | use JsonCodecableTrait; |
| 16 | |
| 17 | /** |
| 18 | * @var array<string, bool> Set of diff markers. |
| 19 | * @see DiffMarkers class |
| 20 | */ |
| 21 | private array $diff = []; |
| 22 | |
| 23 | public function isEmpty(): bool { |
| 24 | return count( $this->diff ) === 0; |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * Add the given mark to this set. |
| 29 | */ |
| 30 | public function addDiffMarker( string $mark ): void { |
| 31 | $this->diff[$mark] = true; |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * Returns true if the given mark is present. |
| 36 | */ |
| 37 | public function hasDiffMarker( string $mark ): bool { |
| 38 | return $this->diff[$mark] ?? false; |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * Returns true if no marks other than the given ones are present. |
| 43 | */ |
| 44 | public function hasOnlyDiffMarkers( string ...$marks ): bool { |
| 45 | // Count the given marks, then compare that to the count of all marks. |
| 46 | $count = 0; |
| 47 | foreach ( $marks as $m ) { |
| 48 | $count += ( $this->diff[$m] ?? false ) ? 1 : 0; |
| 49 | } |
| 50 | return $count === count( $this->diff ); |
| 51 | } |
| 52 | |
| 53 | // RichCodecable |
| 54 | |
| 55 | /** @inheritDoc */ |
| 56 | public static function defaultValue(): DataParsoidDiff { |
| 57 | return new DataParsoidDiff; |
| 58 | } |
| 59 | |
| 60 | /** @return class-string<DataParsoidDiff> */ |
| 61 | public static function hint(): string { |
| 62 | return self::class; |
| 63 | } |
| 64 | |
| 65 | /** No flattened value. */ |
| 66 | public function flatten(): ?string { |
| 67 | return null; |
| 68 | } |
| 69 | |
| 70 | // JsonCodecable |
| 71 | |
| 72 | /** @inheritDoc */ |
| 73 | public function toJsonArray(): array { |
| 74 | $markers = array_keys( $this->diff ); |
| 75 | sort( $markers ); // keep order consistent |
| 76 | return [ 'diff' => $markers ]; |
| 77 | } |
| 78 | |
| 79 | /** @inheritDoc */ |
| 80 | public static function newFromJsonArray( array $json ): DataParsoidDiff { |
| 81 | $dpd = new DataParsoidDiff; |
| 82 | foreach ( $json['diff'] as $mark ) { |
| 83 | $dpd->addDiffMarker( $mark ); |
| 84 | } |
| 85 | return $dpd; |
| 86 | } |
| 87 | } |