function doccomment_from_ast()

in src/consumers/doccomment_from_ast.hack [15:36]

• 22 lines of code
• 5 McCabe index (conditional complexity)

function doccomment_from_ast(
  ScannedDefinition::TContext $_context,
  ?HHAST\Node $node,
): ?string {
  if ($node === null) {
    return null;
  }
  $leading = $node->getFirstToken()?->getLeading();
  if ($leading === null && $node is HHAST\NodeList<_>) {
    $maybe_doc_comments =
      $node->getChildrenOfType(HHAST\DelimitedComment::class);
  } else if ($leading is HHAST\NodeList<_>) {
    $maybe_doc_comments =
      $leading->getChildrenOfType(HHAST\DelimitedComment::class);
  } else {
    return null;
  }
  $doc_comments = $maybe_doc_comments
    |> Vec\map($$, $c ==> $c->getText())
    |> Vec\filter($$, $c ==> Str\starts_with($c, '/**'));
  return C\last($doc_comments);
}