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<?php declare(strict_types=1); /* * This file is part of sebastian/lines-of-code. * * (c) Sebastian Bergmann <sebastian@phpunit.de> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace SebastianBergmann\LinesOfCode; use function array_merge; use function array_unique; use function assert; use function count; use PhpParser\Comment; use PhpParser\Node; use PhpParser\Node\Expr; use PhpParser\NodeVisitorAbstract; final class LineCountingVisitor extends NodeVisitorAbstract { /** * @psalm-var non-negative-int */ private readonly int $linesOfCode; /** * @var Comment[] */ private array $comments = []; /** * @var int[] */ private array $linesWithStatements = []; /** * @psalm-param non-negative-int $linesOfCode */ public function __construct(int $linesOfCode) { $this->linesOfCode = $linesOfCode; } public function enterNode(Node $node): void { $this->comments = array_merge($this->comments, $node->getComments()); if (!$node instanceof Expr) { return; } $this->linesWithStatements[] = $node->getStartLine(); } public function result(): LinesOfCode { $commentLinesOfCode = 0; foreach ($this->comments() as $comment) { $commentLinesOfCode += ($comment->getEndLine() - $comment->getStartLine() + 1); } $nonCommentLinesOfCode = $this->linesOfCode - $commentLinesOfCode; $logicalLinesOfCode = count(array_unique($this->linesWithStatements)); assert($commentLinesOfCode >= 0); assert($nonCommentLinesOfCode >= 0); assert($logicalLinesOfCode >= 0); return new LinesOfCode( $this->linesOfCode, $commentLinesOfCode, $nonCommentLinesOfCode, $logicalLinesOfCode, ); } /** * @return Comment[] */ private function comments(): array { $comments = []; foreach ($this->comments as $comment) { $comments[$comment->getStartLine() . '_' . $comment->getStartTokenPos() . '_' . $comment->getEndLine() . '_' . $comment->getEndTokenPos()] = $comment; } return $comments; } }
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