cubic_protocol/
packet_node.rs

1#[macro_export]
2macro_rules! packet_node {
3    ($(#[$meta:meta])* $node_ident: ident => [
4        $($packet_ident:ident$(<$($packet_generic:ty$(,)*)*>)*$(,)*)*
5    ]) => {
6        $(#[$meta])*
7        pub enum $node_ident {
8            $($packet_ident($packet_ident<$($($packet_generic,)*)*>),)*
9        }
10
11        $(impl From<$packet_ident<$($($packet_generic,)*)*>> for $node_ident {
12            fn from(packet: $packet_ident<$($($packet_generic,)*)*>) -> Self {
13                Self::$packet_ident(packet)
14            }
15        })*
16
17        #[async_trait::async_trait]
18        impl $crate::packet::PacketWritable for $node_ident {
19            async fn write(self, output: &mut impl $crate::packet::OutputPacketBytes) ->
20                $crate::packet::PacketWritableResult {
21                Ok(match self {
22                    $(Self::$packet_ident(packet) => packet.write(output).await?,)*
23                }.into())
24            }
25        }
26
27        #[async_trait::async_trait]
28        impl $crate::packet::PacketReadable for $node_ident {
29            async fn read(input: &mut impl $crate::packet::InputPacketBytes) ->
30                $crate::packet::PacketReadableResult<Self> {
31                let packet_id = VarInt::read(input).await?.0;
32                Ok(match packet_id {
33                    $($packet_ident::<$($($packet_generic,)*)*>::ID => Self::$packet_ident(
34                        $packet_ident::<$($($packet_generic,)*)*>::read(input).await?),
35                    )*
36                    _ => return Err(
37                        $crate::packet::PacketReadableError::Custom($crate::packet::CustomError::StaticStr("Bad packet id"))
38                    )
39                })
40            }
41        }
42    };
43}