vercel-labs--zerolang/benchmarks/rosetta/parse-an-ip-address.0

fn firstOctet(text: Span<u8>) -> u32 {
    var value: u32 = 0
    var i: usize = 0
    while i < std.mem.len(text) {
        if text[i] == 46 {
            return value
        }
        value = value * 10 + (text[i] - 48) as u32
        i = i + 1
    }
    return value
}

pub fn main(world: World) -> Void raises {
    if firstOctet(std.mem.span("127.0.0.1")) == 127 {
        check world.out.write("parse ip ok\n")
    }
}