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| <?php | |
| declare( strict_types = 1 ); | |
| namespace Wikimedia\Parsoid\Tokens; | |
| use Wikimedia\Assert\Assert; | |
| /** | |
| * Represents a source offset range for a key-value pair. | |
| */ | |
| class KVSourceRange implements \JsonSerializable { | |
| /** | |
| * Source range for the key. | |
| * @var SourceRange | |
| */ | |
| public $key; | |
| /** | |
| * Source range for the value. | |
| * @var SourceRange | |
| */ | |
| public $value; | |
| /** | |
| * Create a new key-value source offset range. | |
| * @param int $keyStart The start index of the key | |
| * (unicode code points, inclusive) | |
| * @param int $keyEnd The end index of the key | |
| * (unicode code points, exclusive) | |
| * @param int $valueStart The start index of the value | |
| * (unicode code points, inclusive) | |
| * @param int $valueEnd The end index of the value | |
| * (unicode code points, exclusive) | |
| */ | |
| public function __construct( int $keyStart, int $keyEnd, int $valueStart, int $valueEnd ) { | |
| $this->key = new SourceRange( $keyStart, $keyEnd ); | |
| $this->value = new SourceRange( $valueStart, $valueEnd ); | |
| } | |
| /** | |
| * Return a new key-value source offset range shifted by $amount. | |
| * @param int $amount The amount to shift by | |
| * @return KVSourceRange | |
| */ | |
| public function offset( int $amount ): KVSourceRange { | |
| return new KVSourceRange( | |
| $this->key->start + $amount, | |
| $this->key->end + $amount, | |
| $this->value->start + $amount, | |
| $this->value->end + $amount | |
| ); | |
| } | |
| /** | |
| * Create a new key-value source offset range from an array of | |
| * integers (such as created during JSON serialization). | |
| * @param int[] $so | |
| * @return KVSourceRange | |
| */ | |
| public static function fromArray( array $so ): KVSourceRange { | |
| Assert::invariant( | |
| count( $so ) === 4, | |
| 'Not enough elements in KVSourceRange array' | |
| ); | |
| return new KVSourceRange( $so[0], $so[1], $so[2], $so[3] ); | |
| } | |
| /** | |
| * @inheritDoc | |
| */ | |
| public function jsonSerialize(): array { | |
| return [ | |
| $this->key->start, | |
| $this->key->end, | |
| $this->value->start, | |
| $this->value->end, | |
| ]; | |
| } | |
| } |