Derive Macro Encode 

#[derive(Encode)]
{
    // Attributes available to this derive:
    #[codec]
    #[index]
}

Derive the Encode trait for a message.

A #[codec(..)] attribute must be present to select the serialization backend. The same attribute is shared with Decode — encoding and decoding of the same type must use the same backend, so there is no need to distinguish them:

• #[codec(prost)] — delegates to prost::Message::encode_to_vec. The target type must also implement prost::Message.
• #[codec(zerocopy)] — delegates to zerocopy::IntoBytes::as_bytes. The target type must also implement zerocopy::IntoBytes.
• #[codec(rkyv)] — delegates to rkyv::to_bytes. The target type must also implement rkyv::Serialize.

A #[index(N)] attribute must also be present and sets the Encode::ID constant to the given u64 literal. The value in Encode and Decode must match for the same message type.

Example

use acktor_derive::Encode;

#[derive(zerocopy::IntoBytes, Encode)]
#[codec(zerocopy)]
#[index(1)]
struct Ping(u64);