public static function fromJSON()

in codegen/syntax/TypeParameter.hack [43:115]
73 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;
    $attribute_spec = Node::fromJSON(
      ($json['type_attribute_spec'] ?? dict['kind' => 'missing']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'OldAttributeSpecification',
    );
    $offset += $attribute_spec?->getWidth() ?? 0;
    $reified = Node::fromJSON(
      ($json['type_reified'] ?? dict['kind' => 'missing']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'ReifyToken',
    );
    $offset += $reified?->getWidth() ?? 0;
    $variance = Node::fromJSON(
      ($json['type_variance'] ?? dict['kind' => 'missing']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'Token',
    );
    $offset += $variance?->getWidth() ?? 0;
    $name = Node::fromJSON(
      ($json['type_name']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'NameToken',
    );
    $name = $name as nonnull;
    $offset += $name->getWidth();
    $param_params = Node::fromJSON(
      ($json['type_param_params'] ?? dict['kind' => 'missing']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'TypeParameters',
    );
    $offset += $param_params?->getWidth() ?? 0;
    $constraints = Node::fromJSON(
      ($json['type_constraints'] ?? dict['kind' => 'missing']) as dict<_, _>,
      $file,
      $offset,
      $source,
      'NodeList<TypeConstraint>',
    );
    $offset += $constraints?->getWidth() ?? 0;
    $source_ref = shape(
      'file' => $file,
      'source' => $source,
      'offset' => $initial_offset,
      'width' => $offset - $initial_offset,
    );
    return new static(
      /* HH_IGNORE_ERROR[4110] */ $attribute_spec,
      /* HH_IGNORE_ERROR[4110] */ $reified,
      /* HH_IGNORE_ERROR[4110] */ $variance,
      /* HH_IGNORE_ERROR[4110] */ $name,
      /* HH_IGNORE_ERROR[4110] */ $param_params,
      /* HH_IGNORE_ERROR[4110] */ $constraints,
      $source_ref,
    );
  }