use std::io::{self, Read, Write};
use crate::control::variable_header::VariableHeaderError;
use crate::topic_name::TopicName;
use crate::{Decodable, Encodable};
#[derive(Debug, Eq, PartialEq, Clone)]
pub struct TopicNameHeader(TopicName);
impl TopicNameHeader {
pub fn new(topic_name: String) -> Result<TopicNameHeader, VariableHeaderError> {
match TopicName::new(topic_name) {
Ok(h) => Ok(TopicNameHeader(h)),
Err(err) => Err(VariableHeaderError::TopicNameError(err)),
}
}
}
impl From<TopicNameHeader> for TopicName {
fn from(hdr: TopicNameHeader) -> Self {
hdr.0
}
}
impl Encodable for TopicNameHeader {
fn encode<W: Write>(&self, writer: &mut W) -> Result<(), io::Error> {
(&self.0[..]).encode(writer)
}
fn encoded_length(&self) -> u32 {
(&self.0[..]).encoded_length()
}
}
impl Decodable for TopicNameHeader {
type Error = VariableHeaderError;
type Cond = ();
fn decode_with<R: Read>(reader: &mut R, _rest: ()) -> Result<TopicNameHeader, VariableHeaderError> {
TopicNameHeader::new(Decodable::decode(reader)?)
}
}