/// Gives the prefix in IPv4 dotted decimal format,
/// i.e. the canonical netmask we're all used to
///
/// prefix = IPAddress::prefix::Prefix32.new 24
///
/// prefix.to_ip
/// /// "255.255.255.0"
///
public static Result <Prefix> create(uint num)
{
if (0 <= num && num <= 32)
{
var ip_bits = IpBits.V4;
var bits = ip_bits.bits;
return(Result <Prefix> .Ok(new Prefix(num, ip_bits, Prefix.new_netmask(num, bits),
(p, _num) => create(_num))));
}
return(Result <Prefix> .Err(string.Format("Prefix must be in range 0..32, got: {0}", num)));
}
///
/// Creates a new prefix object for 128 bits IPv6 addresses
///
/// prefix = IPAddressPrefix128.new 64
/// /// 64
///
public static Result <Prefix> create(uint num)
{
if (num <= 128)
{
//static _FROM: &'static (Fn(&Prefix, usize) -> Result<Prefix, String>) = &from;
//static _TO_IP_STR: &'static (Fn(&Vec<u16>) -> String) = &Prefix128::to_ip_str;
var ip_bits = IpBits.V6;
var bits = ip_bits.bits;
return(Result <Prefix> .Ok(new Prefix(
num,
ip_bits,
Prefix.new_netmask(num, bits),
(p, _num) => { return create(_num); }
)));
}
return(Result <Prefix> .Err(string.Format("Prefix must be in range 0..128, got: «{0}»", num)));
}
public bool equal(Prefix other)
{
return(this.ip_bits.version == other.ip_bits.version &&
this.num == other.num);
}
public Result <Prefix> sub_prefix(Prefix other)
{
return(this.sub(other.get_prefix()));
}
public Result <Prefix> add_prefix(Prefix other)
{
return(this.from(this.get_prefix() + other.get_prefix()));
}
public Result <Prefix> from(Prefix my, uint num)
{
return(create(num));
}