fn decode_variable()

in avro/src/util.rs [121:143]

• 20 lines of code
• 4 McCabe index (conditional complexity)

fn decode_variable<R: Read>(reader: &mut R) -> AvroResult<u64> {
    let mut i = 0u64;
    let mut buf = [0u8; 1];

    let mut j = 0;
    loop {
        if j > 9 {
            // if j * 7 > 64
            return Err(Error::IntegerOverflow);
        }
        reader
            .read_exact(&mut buf[..])
            .map_err(Error::ReadVariableIntegerBytes)?;
        i |= (u64::from(buf[0] & 0x7F)) << (j * 7);
        if (buf[0] >> 7) == 0 {
            break;
        } else {
            j += 1;
        }
    }

    Ok(i)
}