func()

in ref.go [165:195]

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

func (d *Decoder) decRef(flag int32) (interface{}, error) {
	var (
		err error
		tag byte
		i   int32
	)

	if flag != TAG_READ {
		tag = byte(flag)
	} else {
		tag, _ = d.ReadByte()
	}

	switch {
	case tag == BC_REF:
		i, err = d.decInt32(TAG_READ)
		if err != nil {
			return nil, err
		}

		if len(d.refs) <= int(i) {
			return nil, nil
			// return nil, ErrIllegalRefIndex
		}
		// return the exact ref object, which maybe a _refHolder
		return d.refs[i], nil

	default:
		return nil, perrors.Errorf("decRef illegal ref type tag:%+v", tag)
	}
}