public static function fromJSON()

in codegen/syntax/ParameterDeclaration.hack [50:134]
85 lines of code
1 McCabe index (conditional complexity)

  public static function fromJSON(
    dict<arraykey, mixed> $json,
    string $file,
    int $initial_offset,
    string $source,
    string $_type_hint,
  ): this {
    $offset = $initial_offset;
    $attribute = Node::fromJSON(
      ($json['parameter_attribute'] ?? dict['kind' => 'missing']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'OldAttributeSpecification',
    );
    $offset += $attribute?->getWidth() ?? 0;
    $visibility = Node::fromJSON(
      ($json['parameter_visibility'] ?? dict['kind' => 'missing'])
        as dict<_, _>,
      $file,
      $offset,
      $source,
      'Token',
    );
    $offset += $visibility?->getWidth() ?? 0;
    $call_convention = Node::fromJSON(
      ($json['parameter_call_convention'] ?? dict['kind' => 'missing'])
        as dict<_, _>,
      $file,
      $offset,
      $source,
      'InoutToken',
    );
    $offset += $call_convention?->getWidth() ?? 0;
    $readonly = Node::fromJSON(
      ($json['parameter_readonly'] ?? dict['kind' => 'missing']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'ReadonlyToken',
    );
    $offset += $readonly?->getWidth() ?? 0;
    $type = Node::fromJSON(
      ($json['parameter_type'] ?? dict['kind' => 'missing']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'ITypeSpecifier',
    );
    $offset += $type?->getWidth() ?? 0;
    $name = Node::fromJSON(
      ($json['parameter_name']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'IExpression',
    );
    $name = $name as nonnull;
    $offset += $name->getWidth();
    $default_value = Node::fromJSON(
      ($json['parameter_default_value'] ?? dict['kind' => 'missing'])
        as dict<_, _>,
      $file,
      $offset,
      $source,
      'SimpleInitializer',
    );
    $offset += $default_value?->getWidth() ?? 0;
    $source_ref = shape(
      'file' => $file,
      'source' => $source,
      'offset' => $initial_offset,
      'width' => $offset - $initial_offset,
    );
    return new static(
      /* HH_IGNORE_ERROR[4110] */ $attribute,
      /* HH_IGNORE_ERROR[4110] */ $visibility,
      /* HH_IGNORE_ERROR[4110] */ $call_convention,
      /* HH_IGNORE_ERROR[4110] */ $readonly,
      /* HH_IGNORE_ERROR[4110] */ $type,
      /* HH_IGNORE_ERROR[4110] */ $name,
      /* HH_IGNORE_ERROR[4110] */ $default_value,
      $source_ref,
    );
  }