mod codec;
mod meta;
use proc_macro::TokenStream;
use syn::{parse_macro_input, DeriveInput};
#[proc_macro_derive(Payload, attributes(codec))]
pub fn derive_payload(input: TokenStream) -> TokenStream {
    let input = parse_macro_input!(input as DeriveInput);
    codec::expand_payload(&input)
        .unwrap_or_else(syn::Error::into_compile_error)
        .into()
}
#[proc_macro_derive(Message, attributes(codec, message))]
pub fn derive_message(input: TokenStream) -> TokenStream {
    let input = parse_macro_input!(input as DeriveInput);
    let payload = match codec::expand_payload(&input) {
        Ok(tokens) => tokens,
        Err(error) => return error.into_compile_error().into(),
    };
    let meta = match meta::expand_meta(&input) {
        Ok(tokens) => tokens,
        Err(error) => return error.into_compile_error().into(),
    };
    let registration = meta::expand_registration(&input);
    quote::quote! {
        #payload
        #meta
        #registration
    }
    .into()
}