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#[derive(Copy, Clone, Debug, std::cmp::PartialEq)]
pub struct MsgId(
#[cfg(not(feature = "long-message-id"))] pub i32,
#[cfg(feature = "long-message-id")] pub i64,
);
use crate::error::ProtocolError;
use crate::{deserialize::*, serialize::*};
impl Serialize for MsgId {
fn serialize(&self) -> Result<Vec<u8>, ProtocolError> {
self.0.serialize()
}
}
impl Deserialize for MsgId {
fn parse(b: &[u8]) -> Result<(usize, Self), ProtocolError> {
#[cfg(not(feature = "long-message-id"))]
let (size, value) = i32::parse(b)?;
#[cfg(feature = "long-message-id")]
let (size, value) = i64::parse(b)?;
return Ok((size, MsgId(value)));
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
pub fn msgid_parse_test() {
let test_bytes: &[u8] = if cfg!(feature = "long-message-id") {
&[0, 0, 0, 0, 0, 0, 0, 1]
} else {
&[0, 0, 0, 1]
};
let (len, res) = MsgId::parse(test_bytes).unwrap();
assert_eq!(len, test_bytes.len());
assert_eq!(res, MsgId(1));
}
#[test]
pub fn msgid_serialize_test() {
let res = MsgId(1).serialize().unwrap();
let expected_bytes: &[u8] = if cfg!(feature = "long-message-id") {
&[0, 0, 0, 0, 0, 0, 0, 1]
} else {
&[0, 0, 0, 1]
};
assert_eq!(res, expected_bytes);
}
}
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