Struct Cidr 

pub struct Cidr {
    pub base: u32,
    pub len: u8,
}

An IPv4 block, parsed from a.b.c.d/len and written back the same way (Display, FromStr).

Fields

base: u32

The network address, as a number.

len: u8

The prefix length.

Implementations

impl Cidr

pub fn parse(s: &str) -> Option<Cidr>

The block written a.b.c.d/len, when it is one: the address must be the network address itself.

pub fn contains(self, other: Cidr) -> bool

Whether other lies inside this block.

pub fn overlaps(self, other: Cidr) -> bool

Whether the two blocks share an address.

pub fn host(self, last_octet: u8) -> Option<Ipv4Addr>

The address with this last octet, if it is a usable host address in the block. Reserved on every target: .1 (gateway) and the two last usable addresses (controller, router).

pub fn gateway(self) -> Ipv4Addr

The gateway’s address: the first usable address of the block (e.g. .1 in a /24).

pub fn gateway_octet(self) -> u8

The gateway’s last octet (1 in a /24, 9 in 10.0.0.8/29).

pub fn controller(self) -> Ipv4Addr

The controller’s address: the second-to-last usable one (e.g. .253 in a /24), where environment-level provisioning runs from.

pub fn tool(self, i: usize) -> Ipv4Addr

The address of the ith tool (0-based): just below the controller (.252, .251, .250 in a /24), reserved for tools when the spec has any.

pub fn router(self) -> Ipv4Addr

The router’s address: the last usable address of the block (e.g. .254 in a /24).

Trait Implementations

impl Clone for Cidr

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Cidr

impl Debug for Cidr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Cidr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Cidr

impl FromStr for Cidr

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Cidr, Error>

Parses a string s to return a value of this type.

impl PartialEq for Cidr

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Cidr