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use std::convert::TryInto;
use std::result::Result;
use std::vec::Vec;
use failure::Error;
use crate::error::ProtocolError;
use crate::primitive::Variant;
use crate::Deserialize;
use crate::Serialize;
use crate::util;
use crate::primitive::VariantMap;
use crate::{HandshakeDeserialize, HandshakeSerialize};
impl HandshakeSerialize for VariantMap {
fn serialize<'a>(&'a self) -> Result<Vec<u8>, Error> {
let mut res: Vec<u8> = Vec::new();
for (k, v) in self {
let key = Variant::String(k.clone());
res.extend(key.serialize()?);
res.extend(v.serialize()?);
}
let len: i32 = (self.len() * 2).try_into().unwrap();
util::insert_bytes(0, &mut res, &mut (len).to_be_bytes());
return Ok(res);
}
}
impl HandshakeDeserialize for VariantMap {
fn parse(b: &[u8]) -> Result<(usize, Self), Error> {
let (_, len) = i32::parse(&b[0..4])?;
let mut pos: usize = 4;
let mut map = VariantMap::new();
for _ in 0..(len / 2) {
let (nlen, name) = Variant::parse(&b[pos..])?;
pos += nlen;
let (vlen, value) = Variant::parse(&b[pos..])?;
pos += vlen;
match name {
Variant::String(x) => map.insert(x, value),
Variant::StringUTF8(x) => map.insert(x, value),
_ => bail!(ProtocolError::WrongVariant),
};
}
return Ok((pos, map));
}
}
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