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use std::io;
pub use super::errors::*;
#[derive(Debug, Clone, PartialEq)]
pub struct Message {
pub cmd: u8,
pub data: Vec<u8>
}
impl Message {
pub fn new(cmd: u8) -> Message {
return Message::with_data(cmd, &[]);
}
pub fn with_data(cmd: u8, data: &[u8]) -> Message {
let mut msg = Message {
cmd: cmd,
data: Vec::with_capacity(data.len())
};
msg.data.extend_from_slice(&data);
return msg;
}
}
pub trait ProtocolDecoder {
fn decode(&mut self, buf: &[u8]) -> Result<(usize, Option<Message>)>;
fn reset_decoder(&mut self);
}
pub trait ProtocolEncoder {
fn encode(&mut self, msg: &Message, bytes: &mut [u8]) -> Result<usize>;
fn estimate_encoded_size(&mut self, msg: &Message) -> Result<usize>;
fn write_to(&mut self, msg: &Message, dest: &mut impl io::Write) -> Result<usize>;
fn reset_encoder(&mut self);
}