func()

in string.go [169:202]

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

func (d *Decoder) getStringLength(tag byte) (int, error) {
	var length int

	switch {
	case tag >= BC_STRING_DIRECT && tag <= STRING_DIRECT_MAX:
		return int(tag - 0x00), nil

	case tag >= 0x30 && tag <= 0x33:
		b, err := d.ReadByte()
		if err != nil {
			return -1, perrors.WithStack(err)
		}

		length = int(tag-0x30)<<8 + int(b)
		return length, nil

	case tag == BC_STRING_CHUNK || tag == BC_STRING:
		b0, err := d.ReadByte()
		if err != nil {
			return -1, perrors.WithStack(err)
		}

		b1, err := d.ReadByte()
		if err != nil {
			return -1, perrors.WithStack(err)
		}

		length = int(b0)<<8 + int(b1)
		return length, nil

	default:
		return -1, perrors.Errorf("string decode: unknown tag %b", tag)
	}
}