Struct HostToArk 

pub struct HostToArk {
    pub id: u64,
    pub err: Option<Error>,
    pub content: Option<Content>,
}

HostToArk represents a message sent from the host to the Ark via the USB connection. It embeds all possible message types to keep the protocol simple.

Every message carries an id and is either a request, its id chosen by the host, or the host’s response to a request of the Ark, echoing the Ark’s id. To avoid id collisions, hosts allocate odd ids and Arks even ones, so a receiver can tell a response from a request by the parity of the id alone.

Fields

id: u64

Enveloping fields, reserved range 0x001-0x0ff

Request identifier, the host’s own or responded to

err: Option<Error>

Error encountered while serving the Ark’s request (if any)

content: Option<Content>

Trait Implementations

impl Clone for HostToArk

fn clone(&self) -> HostToArk

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HostToArk

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

Formats the value using the given formatter.

impl Default for HostToArk

fn default() -> Self

Returns the “default value” for a type.

impl Eq for HostToArk

impl Hash for HostToArk

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for HostToArk

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for HostToArk

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HostToArk