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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace Wikimedia\Parsoid\Tokens; |
| 5 | |
| 6 | use Wikimedia\Assert\Assert; |
| 7 | use Wikimedia\JsonCodec\JsonCodecable; |
| 8 | use Wikimedia\JsonCodec\JsonCodecableTrait; |
| 9 | |
| 10 | /** |
| 11 | * Represents a source offset range for a key-value pair. |
| 12 | */ |
| 13 | class KVSourceRange implements JsonCodecable { |
| 14 | use JsonCodecableTrait; |
| 15 | |
| 16 | /** |
| 17 | * Source range for the key. |
| 18 | */ |
| 19 | public SourceRange $key; |
| 20 | |
| 21 | /** |
| 22 | * Source range for the value. |
| 23 | */ |
| 24 | public SourceRange $value; |
| 25 | |
| 26 | /** |
| 27 | * Create a new key-value source offset range. |
| 28 | * @param int $keyStart The start index of the key |
| 29 | * (unicode code points, inclusive) |
| 30 | * @param int $keyEnd The end index of the key |
| 31 | * (unicode code points, exclusive) |
| 32 | * @param int $valueStart The start index of the value |
| 33 | * (unicode code points, inclusive) |
| 34 | * @param int $valueEnd The end index of the value |
| 35 | * (unicode code points, exclusive) |
| 36 | */ |
| 37 | public function __construct( int $keyStart, int $keyEnd, int $valueStart, int $valueEnd ) { |
| 38 | $this->key = new SourceRange( $keyStart, $keyEnd ); |
| 39 | $this->value = new SourceRange( $valueStart, $valueEnd ); |
| 40 | } |
| 41 | |
| 42 | public function __clone() { |
| 43 | $this->key = clone $this->key; |
| 44 | $this->value = clone $this->value; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Return a new key-value source offset range shifted by $amount. |
| 49 | * @param int $amount The amount to shift by |
| 50 | * @return KVSourceRange |
| 51 | */ |
| 52 | public function offset( int $amount ): KVSourceRange { |
| 53 | return new KVSourceRange( |
| 54 | $this->key->start + $amount, |
| 55 | $this->key->end + $amount, |
| 56 | $this->value->start + $amount, |
| 57 | $this->value->end + $amount |
| 58 | ); |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Create a new key-value source offset range from an array of |
| 63 | * integers (such as created during JSON serialization). |
| 64 | * @param int[] $so |
| 65 | * @return KVSourceRange |
| 66 | */ |
| 67 | public static function newFromJsonArray( array $so ): KVSourceRange { |
| 68 | Assert::invariant( |
| 69 | count( $so ) === 4, |
| 70 | 'Not enough elements in KVSourceRange array' |
| 71 | ); |
| 72 | return new KVSourceRange( $so[0], $so[1], $so[2], $so[3] ); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * @inheritDoc |
| 77 | */ |
| 78 | public function toJsonArray(): array { |
| 79 | return [ |
| 80 | $this->key->start, |
| 81 | $this->key->end, |
| 82 | $this->value->start, |
| 83 | $this->value->end, |
| 84 | ]; |
| 85 | } |
| 86 | } |