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<?php |
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/** |
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* This file is part of Railt package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Railt\SDL\Frontend\Ast; |
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use Phplrt\Position\Position; |
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use Phplrt\Position\PositionInterface; |
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use Phplrt\Contracts\Source\FileInterface; |
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use Phplrt\Contracts\Source\ReadableInterface; |
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use Phplrt\Source\Exception\NotAccessibleException; |
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/** |
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* Contains a range of byte offsets that identify the region of the source |
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* from which the AST derived. |
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*/ |
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final class Location implements \JsonSerializable |
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{ |
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/** |
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* @var ReadableInterface|FileInterface |
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*/ |
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public ReadableInterface $source; |
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/** |
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* @var int |
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*/ |
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public int $start; |
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/** |
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* @var int |
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*/ |
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public int $end; |
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/** |
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* @var PositionInterface|null |
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*/ |
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private ?PositionInterface $startPosition = null; |
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/** |
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* @var PositionInterface|null |
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*/ |
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private ?PositionInterface $endPosition = null; |
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/** |
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* Location constructor. |
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* |
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* @param ReadableInterface $source |
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* @param int $start |
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* @param int $end |
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*/ |
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public function __construct(ReadableInterface $source, int $start, int $end) |
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{ |
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$this->source = $source; |
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$this->start = $start; |
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$this->end = $end; |
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} |
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/** |
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* @return array |
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* @throws NotAccessibleException |
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* @throws \RuntimeException |
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*/ |
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public function jsonSerialize(): array |
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{ |
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$source = $this->source instanceof FileInterface |
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? $this->source->getPathname() |
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: '{ ... }'; |
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return [ |
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'source' => $source, |
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'start' => ['line' => $this->getStartLine(), 'column' => $this->getStartColumn()], |
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'end' => ['line' => $this->getEndLine(), 'column' => $this->getEndColumn()], |
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]; |
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} |
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/** |
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* @return int |
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* @throws NotAccessibleException |
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* @throws \RuntimeException |
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*/ |
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public function getStartLine(): int |
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{ |
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return $this->getStartPosition()->getLine(); |
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} |
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/** |
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* @return PositionInterface |
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* @throws NotAccessibleException |
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* @throws \RuntimeException |
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*/ |
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public function getStartPosition(): PositionInterface |
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{ |
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return $this->startPosition ?? $this->startPosition = Position::fromOffset($this->source, $this->start); |
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} |
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/** |
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* @return int |
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* @throws NotAccessibleException |
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* @throws \RuntimeException |
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*/ |
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public function getStartColumn(): int |
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{ |
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return $this->getStartPosition()->getColumn(); |
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} |
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/** |
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* @return int |
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* @throws NotAccessibleException |
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* @throws \RuntimeException |
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*/ |
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public function getEndLine(): int |
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{ |
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return $this->getEndPosition()->getLine(); |
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} |
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/** |
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* @return PositionInterface |
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* @throws NotAccessibleException |
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* @throws \RuntimeException |
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*/ |
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public function getEndPosition(): PositionInterface |
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{ |
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return $this->endPosition ?? $this->endPosition = Position::fromOffset($this->source, $this->end); |
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} |
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/** |
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* @return int |
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* @throws NotAccessibleException |
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* @throws \RuntimeException |
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*/ |
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public function getEndColumn(): int |
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{ |
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return $this->getEndPosition()->getColumn(); |
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} |
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} |
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railt /
sdl
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