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use super::{buffer::RuleMessageBuffer, header::RuleHeader, nlas::Nla};
use crate::{
utils::{Emitable, Parseable},
DecodeError,
};
use anyhow::Context;
#[derive(Debug, PartialEq, Eq, Clone, Default)]
pub struct RuleMessage {
pub header: RuleHeader,
pub nlas: Vec<Nla>,
}
impl Emitable for RuleMessage {
fn buffer_len(&self) -> usize {
self.header.buffer_len() + self.nlas.as_slice().buffer_len()
}
fn emit(&self, buffer: &mut [u8]) {
self.header.emit(buffer);
self.nlas
.as_slice()
.emit(&mut buffer[self.header.buffer_len()..]);
}
}
impl<'a, T: AsRef<[u8]> + 'a> Parseable<RuleMessageBuffer<&'a T>> for RuleMessage {
fn parse(buf: &RuleMessageBuffer<&'a T>) -> Result<Self, DecodeError> {
let header = RuleHeader::parse(buf).context("failed to parse link message header")?;
let nlas = Vec::<Nla>::parse(buf).context("failed to parse link message NLAs")?;
Ok(RuleMessage { header, nlas })
}
}
impl<'a, T: AsRef<[u8]> + 'a> Parseable<RuleMessageBuffer<&'a T>> for Vec<Nla> {
fn parse(buf: &RuleMessageBuffer<&'a T>) -> Result<Self, DecodeError> {
let mut nlas = vec![];
for nla_buf in buf.nlas() {
nlas.push(Nla::parse(&nla_buf?)?);
}
Ok(nlas)
}
}
