function typeish_from_ast()

in src/consumers/typeish_from_ast.hack [14:42]

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

function typeish_from_ast<T as ScannedTypeish>(
  ConsumerContext $context,
  classname<T> $def_class,
  HHAST\AliasDeclaration $node,
): ?T {
  switch ($def_class) {
    case ScannedType::class:
      if (!$node->getKeyword() is HHAST\TypeToken) {
        return null;
      }
      break;
    case ScannedNewtype::class:
      if (!$node->getKeyword() is HHAST\NewtypeToken) {
        return null;
      }
      break;
  }

  $context = context_with_node_position($context, $node);

  return new $def_class(
    $node,
    decl_name_in_context($context, name_from_ast($node->getName())),
    $context['definitionContext'],
    attributes_from_ast($node->getAttributeSpec()),
    null,
    nullthrows(typehint_from_ast($context, $node->getType())),
  );
}