Struct Decoder 

pub struct Decoder {
    buf: [u8; 5],
    len: u8,
    state: DecoderState,
}

Incremental fixed-header decoder.

Feed bytes via Decoder::feed. Once it returns DecodeState::Complete, read that many bytes from your transport and pass them to Packet::decode. Then call Decoder::reset (or create a new one) for the next packet.

Fields

buf: [u8; 5]

Accumulator for the fixed header bytes (max 5: 1 type+flags + up to 4 VBI).

len: u8

state: DecoderState

Implementations

impl Decoder

pub const fn new() -> Self

Creates a new decoder ready to parse the next packet.

pub const fn reset(&mut self)

Reset for decoding the next packet.

pub fn feed(&mut self, byte: u8) -> Result<DecodeState, DecodeError>

Feed one byte at a time and return the decode state.

Returns:

• Ok(DecodeState::Incomplete) — need more bytes
• Ok(DecodeState::Complete(header)) — fixed header fully parsed
• Err(_) — malformed data

Errors

Returns DecodeError on malformed input (invalid packet type, VBI overflow, or feeding bytes after completion without reset).

Trait Implementations

impl Clone for Decoder

fn clone(&self) -> Decoder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Decoder

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

Formats the value using the given formatter.

impl Default for Decoder

fn default() -> Self

Returns the “default value” for a type.