kovi-macros 0.3.0-rc2

An auxiliary library for the kovi crate
Documentation 
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//! # `kovi-macros`
//!
//! `kovi-macros` is an auxiliary library for the [`kovi`](https://crates.io/crates/kovi) crate.


use proc_macro::TokenStream;
use quote::quote;
use syn::{parse_macro_input, ItemFn};

#[proc_macro_attribute]
pub fn plugin(_attr: TokenStream, item: TokenStream) -> TokenStream {
    let input = parse_macro_input!(item as ItemFn);
    let fn_name = &input.sig.ident;

    let expanded = quote! {
        #input

        pub fn __kovi_get_plugin_info() -> (&'static str, &'static str) {
            let name = env!("CARGO_PKG_NAME");
            let version = env!("CARGO_PKG_VERSION");
            (name, version)
        }

        pub fn __kovi_run_async_plugin(p: PluginBuilder) -> std::pin::Pin<Box<dyn std::future::Future<Output = ()> + Send>> {
            Box::pin(async move {
                #fn_name(p).await;
            })
        }
    };

    TokenStream::from(expanded)
}